TY - JOUR T1 - Operando Grazing Incidence Small-Angle X-ray Scattering/X-ray Diffraction of Model Ordered Mesoporous Lithium-Ion Battery Anodes. AN - 1863702845; 28145689 AB - Emergent lithium-ion (Li+) batteries commonly rely on nanostructuring of the active electrode materials to decrease the Li+ ion diffusion path length and to accommodate the strains associated with the insertion and de-insertion of Li+, but in many cases these nanostructures evolve during electrochemical charging-discharging. This change in the nanostructure can adversely impact performance, and challenges remain regarding how to control these changes from the perspective of morphological design. In order to address these questions, operando grazing-incidence small-angle X-ray scattering and X-ray diffraction (GISAXS/GIXD) were used to assess the structural evolution of a family of model ordered mesoporous NiCo2O4 anode films during battery operation. The pore dimensions were systematically varied and appear to impact the stability of the ordered nanostructure during the cycling. For the anodes with small mesopores (≈9 nm), the ordered nanostructure collapses during the first two charge-discharge cycles, as determined from GISAXS. This collapse is accompanied by irreversible Li-ion insertion within the oxide framework, determined from GIXD and irreversible capacity loss. Conversely, anodes with larger ordered mesopores (17-28 nm) mostly maintained their nanostructure through the first two cycles with reversible Li-ion insertion. During the second cycle, there was a small additional deformation of the mesostructure. This preservation of the ordered structure lead to significant improvement in capacity retention during these first two cycles; however, a gradual loss in the ordered nanostructure from continuing deformation of the ordered structure during additional charge-discharge cycles leads to capacity decay in battery performance. These multiscale operando measurements provide insight into how changes at the atomic scale (lithium insertion and de-insertion) are translated to the nanostructure during battery operation. Moreover, small changes in the nanostructure can build up to significant morphological transformations that adversely impact battery performance through multiple charge-discharge cycles. JF - ACS nano AU - Bhaway, Sarang M AU - Qiang, Zhe AU - Xia, Yanfeng AU - Xia, Xuhui AU - Lee, Byeongdu AU - Yager, Kevin G AU - Zhang, Lihua AU - Kisslinger, Kim AU - Chen, Yu-Ming AU - Liu, Kewei AU - Zhu, Yu AU - Vogt, Bryan D AD - X-ray Science Division, Advanced Photon Source, Center for Nanoscale Materials, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States. Y1 - 2017/02/28/ PY - 2017 DA - 2017 Feb 28 SP - 1443 EP - 1454 VL - 11 IS - 2 KW - metal oxide anode KW - cooperative assembly KW - nanoporous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863702845?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+nano&rft.atitle=Operando+Grazing+Incidence+Small-Angle+X-ray+Scattering%2FX-ray+Diffraction+of+Model+Ordered+Mesoporous+Lithium-Ion+Battery+Anodes.&rft.au=Bhaway%2C+Sarang+M%3BQiang%2C+Zhe%3BXia%2C+Yanfeng%3BXia%2C+Xuhui%3BLee%2C+Byeongdu%3BYager%2C+Kevin+G%3BZhang%2C+Lihua%3BKisslinger%2C+Kim%3BChen%2C+Yu-Ming%3BLiu%2C+Kewei%3BZhu%2C+Yu%3BVogt%2C+Bryan+D&rft.aulast=Bhaway&rft.aufirst=Sarang&rft.date=2017-02-28&rft.volume=11&rft.issue=2&rft.spage=1443&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Facsnano.6b06708 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2017-02-01 N1 - Date revised - 2017-03-02 N1 - Last updated - 2017-03-02 DO - http://dx.doi.org/10.1021/acsnano.6b06708 ER - TY - JOUR T1 - Effects of Metal Composition and Ratio on Peptide-Templated Multimetallic PdPt Nanomaterials. AN - 1865542056; 28156088 AB - It can be difficult to simultaneously control the size, composition, and morphology of metal nanomaterials under benign aqueous conditions. For this, bioinspired approaches have become increasingly popular due to their ability to stabilize a wide array of metal catalysts under ambient conditions. In this regard, we used the R5 peptide as a three-dimensional template for formation of PdPt bimetallic nanomaterials. Monometallic Pd and Pt nanomaterials have been shown to be highly reactive toward a variety of catalytic processes, but by forming bimetallic species, increased catalytic activity may be realized. The optimal metal-to-metal ratio was determined by varying the Pd:Pt ratio to obtain the largest increase in catalytic activity. To better understand the morphology and the local atomic structure of the materials, the bimetallic PdPt nanomaterials were extensively studied by transmission electron microscopy, extended X-ray absorption fine structure spectroscopy, X-ray photoelectron spectroscopy, and pair distribution function analysis. The resulting PdPt materials were determined to form multicomponent nanostructures where the Pt component demonstrated varying degrees of oxidation based upon the Pd:Pt ratio. To test the catalytic reactivity of the materials, olefin hydrogenation was conducted, which indicated a slight catalytic enhancement for the multicomponent materials. These results suggest a strong correlation between the metal ratio and the stabilizing biotemplate in controlling the final materials morphology, composition, and the interactions between the two metal species. JF - ACS applied materials & interfaces AU - Merrill, Nicholas A AU - Nitka, Tadeusz T AU - McKee, Erik M AU - Merino, Kyle C AU - Drummy, Lawrence F AU - Lee, Sungsik AU - Reinhart, Benjamin AU - Ren, Yang AU - Munro, Catherine J AU - Pylypenko, Svitlana AU - Frenkel, Anatoly I AU - Bedford, Nicholas M AU - Knecht, Marc R AD - Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146, United States. ; Department of Chemistry, Colorado School of Mines , Golden, Colorado 80401, United States. ; Materials and Manufacturing Directorate, Air Force Research Laboratory , Wright-Patterson Air Force Base, Ohio 45433, United States. ; X-ray Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; Department of Materials Science and Chemical Engineering, Stony Brook University , Stony Brook, New York 11794, United States. Y1 - 2017/02/27/ PY - 2017 DA - 2017 Feb 27 KW - X-ray characterization KW - catalysis KW - bimetallic KW - nanoparticle KW - atomic characterization KW - peptides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1865542056?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+applied+materials+%26+interfaces&rft.atitle=Effects+of+Metal+Composition+and+Ratio+on+Peptide-Templated+Multimetallic+PdPt+Nanomaterials.&rft.au=Merrill%2C+Nicholas+A%3BNitka%2C+Tadeusz+T%3BMcKee%2C+Erik+M%3BMerino%2C+Kyle+C%3BDrummy%2C+Lawrence+F%3BLee%2C+Sungsik%3BReinhart%2C+Benjamin%3BRen%2C+Yang%3BMunro%2C+Catherine+J%3BPylypenko%2C+Svitlana%3BFrenkel%2C+Anatoly+I%3BBedford%2C+Nicholas+M%3BKnecht%2C+Marc+R&rft.aulast=Merrill&rft.aufirst=Nicholas&rft.date=2017-02-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=ACS+applied+materials+%26+interfaces&rft.issn=1944-8252&rft_id=info:doi/10.1021%2Facsami.6b11651 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2017-02-03 N1 - Date revised - 2017-03-01 N1 - Last updated - 2017-03-01 DO - http://dx.doi.org/10.1021/acsami.6b11651 ER - TY - JOUR T1 - Transition metal-substituted lead halide perovskite absorbers AN - 1872840609; PQ0004123577 AB - Lead halide perovskites have proven to be a versatile class of visible light absorbers that allow rapid access to the long minority carrier lifetimes and diffusion lengths desirable for traditional single-junction photovoltaics. We explore the extent to which the attractive features of these semiconductors may be extended to include an intermediate density of states for future application in multi-level solar energy conversion systems capable of exceeding the Shockley-Queisser limit. We computationally and experimentally explore the substitution of transition metals on the Pb site of MAPbX3 (MA = methylammonium, X = Br or Cl) to achieve a tunable density of states within the parent gap. Computational screening identified both Fe- and Co-substituted MAPbBr3 as promising absorbers with a mid-gap density of states, and the later films were synthesized via conventional solution-based processing techniques. First-principles density functional theory (DFT) calculations support the existence of mid-gap states upon Co incorporation and enhanced sub-gap absorption, which are consistent with UV-visible-NIR absorption spectroscopy. Strikingly, steady state and time-resolved PL studies reveal no sign of self-quenching for Co-substitution up to 25%, which suggest this class of materials to be a worthy candidate for future application in intermediate band photovoltaics. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Sampson, MD AU - Park, J S AU - Schaller, R D AU - Chan, MKY AU - Martinson, ABF AD - Materials Science Division; Argonne National Laboratory; Argonne; Illinois 60439; USA Y1 - 2017/02// PY - 2017 DA - February 2017 SP - 3578 EP - 3588 PB - Royal Society of Chemistry VL - 5 IS - 7 SN - 2050-7488, 2050-7488 KW - Environment Abstracts KW - Photovoltaics KW - Metals KW - Absorption spectroscopy KW - Energy KW - Absorption KW - Diffusion KW - Halides KW - Solar energy KW - Lead KW - Sustainability KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1872840609?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Transition+metal-substituted+lead+halide+perovskite+absorbers&rft.au=Sampson%2C+MD%3BPark%2C+J+S%3BSchaller%2C+R+D%3BChan%2C+MKY%3BMartinson%2C+ABF&rft.aulast=Sampson&rft.aufirst=MD&rft.date=2017-02-01&rft.volume=5&rft.issue=7&rft.spage=3578&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc6ta09745f LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-03-01 N1 - Number of references - 66 N1 - Last updated - 2017-03-01 N1 - SubjectsTermNotLitGenreText - Photovoltaics; Metals; Absorption spectroscopy; Energy; Absorption; Diffusion; Solar energy; Halides; Sustainability; Lead DO - http://dx.doi.org/10.1039/c6ta09745f ER - TY - JOUR T1 - Advanced oil sorbents using sequential infiltration synthesis AN - 1872838012; PQ0004121740 AB - Disasters on the scale of the Exxon Valdez and Deepwater Horizon serve as harrowing reminders of the devastating effects uncontrolled oil spills have on the environment. Skimming, burning, and dispersing oil are only partially effective and carry their own ecological impacts. An enticing alternative strategy involves oil sorbents capable of efficient extraction of oil from water bodies, which in turn necessitates the design and implementation of novel materials Here, we extend methods of sequential infiltration synthesis (SIS) traditionally only applied to nanometer scale thin films to create oil sorbents based on macroscopic, commercially available polymeric foams. Targeting superoleophilic and superhydrophobic chemistries, we demonstrate the propensity of SIS-based modifications in oil spill remediation and demonstrate its efficacy in crude oil sorption in model seawater. We find crude oil sorption on the order of 30 and 90 times the initial foam weight for polyurethane and polyimide, respectively, both with highly favorable reusability. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Barry, Edward AU - Mane, Anil U AU - Libera, Joseph A AU - Elam, Jeffrey W AU - Darling, Seth B AD - Center for Nanoscale Materials; Argonne National Laboratory; 9700 South Cass Avenue, Lemont; Illinois 60439; USA Y1 - 2017/02// PY - 2017 DA - February 2017 SP - 2929 EP - 2935 PB - Royal Society of Chemistry VL - 5 IS - 6 SN - 2050-7488, 2050-7488 KW - Environment Abstracts KW - Sorption KW - Sorbents KW - Crude oil KW - Bioremediation KW - Seawater KW - Energy KW - Infiltration KW - Disasters KW - Water bodies KW - Oil spills KW - Sustainability KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1872838012?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Advanced+oil+sorbents+using+sequential+infiltration+synthesis&rft.au=Barry%2C+Edward%3BMane%2C+Anil+U%3BLibera%2C+Joseph+A%3BElam%2C+Jeffrey+W%3BDarling%2C+Seth+B&rft.aulast=Barry&rft.aufirst=Edward&rft.date=2017-02-01&rft.volume=5&rft.issue=6&rft.spage=2929&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc6ta09014a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-03-01 N1 - Number of references - 38 N1 - Last updated - 2017-03-01 N1 - SubjectsTermNotLitGenreText - Sorption; Sorbents; Bioremediation; Crude oil; Energy; Seawater; Disasters; Infiltration; Water bodies; Sustainability; Oil spills DO - http://dx.doi.org/10.1039/c6ta09014a ER - TY - JOUR T1 - Structural Basis for the Lesion-scanning Mechanism of the Bacterial MutY DNA Glycosylase. AN - 1862760244; 28130451 AB - The highly mutagenic A:oxoG (8-oxoguanine) base-pair is generated mainly by misreplication of the C:oxoG base-pair, the oxidation product of the C:G base-pair. A:oxoG base-pair is particularly insidious because neither base in it carries faithful information to direct the repair of the other. The bacterial MutY (MUTYH in humans) adenine DNA glycosylase is able to initiate the repair of A:oxoG by selectively cleaving the A base from the A:oxoG base-pair. The difference between faithful repair and wreaking mutagenic havoc on the genome lies in the accurate discrimination between two structurally similar base-pairs: A:oxoG and A:T. Here we present two crystal structures of the MutY N-terminal domain in complex with either undamaged DNA or DNA containing an intrahelical lesion. These structures have captured for the first time, a DNA glycosylase scanning the genome for a damaged base in the very first stage of lesion-recognition and the base-extrusion pathway. The mode of interaction observed here has suggested a common lesion-scanning mechanism across the entire helix-hairpin-helix superfamily to which MutY belongs. In addition, small-angle X-ray scattering (SAXS) studies together with accompanying biochemical assays have suggested a possible role played by the C-terminal oxoG-recognition domain of MutY in lesion-scanning. JF - The Journal of biological chemistry AU - Wang, Lan AU - Chakravarthy, Srinivas AU - Verdine, Gregory L AD - Harvard University, United States. ; Argonne National Laboratory, United States. ; Harvard University, United States; gregory_verdine@harvard.edu. Y1 - 2017/01/27/ PY - 2017 DA - 2017 Jan 27 KW - 8-Oxoguanine (8-oxoG) KW - base excision repair (BER) KW - lesion-scanning KW - structural biology KW - disulfide trapping KW - DNA KW - small-angle X-ray scattering (SAXS) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1862760244?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+biological+chemistry&rft.atitle=Structural+Basis+for+the+Lesion-scanning+Mechanism+of+the+Bacterial+MutY+DNA+Glycosylase.&rft.au=Wang%2C+Lan%3BChakravarthy%2C+Srinivas%3BVerdine%2C+Gregory+L&rft.aulast=Wang&rft.aufirst=Lan&rft.date=2017-01-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+biological+chemistry&rft.issn=1083-351X&rft_id=info:doi/10.1074%2Fjbc.M116.757039 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2017-01-28 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1074/jbc.M116.757039 ER - TY - JOUR T1 - Crystal structure of Staphylococcus aureus Zn-glyoxalase I: new subfamily of glyoxalase I family. AN - 1854614085; 28034013 AB - The crystal structures of protein SA0856 from Staphylococcus aureus in its apo-form and in complex with a Zn2+-ion have been presented. The 152 amino acid protein consists of two similar domains with α + β topology. In both crystalline state and in solution, the protein forms a dimer with monomers related by a twofold pseudo-symmetry rotation axis. A sequence homology search identified the protein as a member of the structural family Glyoxalase I. We have shown that the enzyme possesses glyoxalase I activity in the presence of Zn2+, Mg2+, Ni2+, and Co2+, in this order of preference. Sequence and structure comparisons revealed that human glyoxalase I should be assigned to a subfamily A, while S. aureus glyoxalase I represents a new subfamily B, which includes also proteins from other bacteria. Both subfamilies have a similar protein chain fold but rather diverse sequences. The active sites of human and staphylococcus glyoxalases I are also different: the former contains one Zn-ion per chain; the latter incorporates two of these ions. In the active site of SA0856, the first Zn-ion is well coordinated by His58, Glu60 from basic molecule and Glu40*, His44* from adjacent symmetry-related molecule. The second Zn3-ion is coordinated only by residue His143 from protein molecule and one acetate ion. We suggest that only single Zn1-ion plays the role of catalytic center. The newly found differences between the two subfamilies could guide the design of new drugs against S. aureus, an important pathogenic micro-organism. JF - Journal of biomolecular structure & dynamics AU - Chirgadze, Yuri N AU - Boshkova, Eugenia A AU - Battaile, Kevin P AU - Mendes, Vitor G AU - Lam, Robert AU - Chan, Tiffany S Y AU - Romanov, Vladimir AU - Pai, Emil F AU - Chirgadze, Nickolay Y AD - a Institute of Protein Research , Russian Academy of Sciences , Pushchino 142290 , Moscow Region , Russia. ; b Advanced Photon Source, Argonne National Laboratory , Hauptman-Woodward Medical Research Institute, IMCA-CAT , Argonne , IL 60439 , USA. ; c Department of Biochemistry , University of Cambridge , Cambridge CB2 1GA , UK. ; d Campbell Family Cancer Research Institute, Ontario Cancer Institute , Princess Margaret Hospital, University Health Network , Toronto , Ontario M5G 2C4 , Canada. Y1 - 2017/01/16/ PY - 2017 DA - 2017 Jan 16 SP - 1 EP - 11 KW - pathogen KW - metalloprotein KW - glyoxalase I KW - subfamily UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1854614085?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+biomolecular+structure+%26+dynamics&rft.atitle=Crystal+structure+of+Staphylococcus+aureus+Zn-glyoxalase+I%3A+new+subfamily+of+glyoxalase+I+family.&rft.au=Chirgadze%2C+Yuri+N%3BBoshkova%2C+Eugenia+A%3BBattaile%2C+Kevin+P%3BMendes%2C+Vitor+G%3BLam%2C+Robert%3BChan%2C+Tiffany+S+Y%3BRomanov%2C+Vladimir%3BPai%2C+Emil+F%3BChirgadze%2C+Nickolay+Y&rft.aulast=Chirgadze&rft.aufirst=Yuri&rft.date=2017-01-16&rft.volume=&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+biomolecular+structure+%26+dynamics&rft.issn=1538-0254&rft_id=info:doi/10.1080%2F07391102.2016.1278038 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-12-30 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1080/07391102.2016.1278038 ER - TY - JOUR T1 - Insulating Nanomagnets Driven by Spin Torque. AN - 1857753939; 28073261 AB - Magnetic insulators, such as yttrium iron garnet (Y3Fe5O12), are ideal materials for ultralow power spintronics applications due to their low energy dissipation and efficient spin current generation and transmission. Recently, it has been realized that spin dynamics can be driven very effectively in micrometer-sized Y3Fe5O12/Pt heterostructures by spin-Hall effects. We demonstrate here the excitation and detection of spin dynamics in Y3Fe5O12/Pt nanowires by spin-torque ferromagnetic resonance. The nanowires defined via electron-beam lithography are fabricated by conventional room temperature sputtering deposition on Gd3Ga5O12 substrates and lift-off. We observe field-like and antidamping-like torques acting on the magnetization precession, which are due to simultaneous excitation by Oersted fields and spin-Hall torques. The Y3Fe5O12/Pt nanowires are thoroughly examined over a wide frequency and power range. We observe a large change in the resonance field at high microwave powers, which is attributed to a decreasing effective magnetization due to microwave absorption. These heating effects are much more pronounced in the investigated nanostructures than in comparable micron-sized samples. By comparing different nanowire widths, the importance of geometrical confinements for magnetization dynamics becomes evident: quantized spin-wave modes across the width of the wires are observed in the spectra. Our results are the first stepping stones toward the realization of integrated magnonic logic devices based on insulators, where nanomagnets play an essential role. JF - Nano letters AU - Jungfleisch, Matthias B AU - Ding, Junjia AU - Zhang, Wei AU - Jiang, Wanjun AU - Pearson, John E AU - Novosad, Valentine AU - Hoffmann, Axel AD - Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2017/01/11/ PY - 2017 DA - 2017 Jan 11 SP - 8 EP - 14 VL - 17 IS - 1 KW - yttrium iron garnet KW - magnetization dynamics KW - Spin-torque ferromagnetic resonance KW - spin-Hall effect KW - platinum KW - spin-transfer torque UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1857753939?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Insulating+Nanomagnets+Driven+by+Spin+Torque.&rft.au=Jungfleisch%2C+Matthias+B%3BDing%2C+Junjia%3BZhang%2C+Wei%3BJiang%2C+Wanjun%3BPearson%2C+John+E%3BNovosad%2C+Valentine%3BHoffmann%2C+Axel&rft.aulast=Jungfleisch&rft.aufirst=Matthias&rft.date=2017-01-11&rft.volume=17&rft.issue=1&rft.spage=8&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.6b02794 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2017-01-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.6b02794 ER - TY - JOUR T1 - Aquatic Nuisance Species in the Great Lakes and Mississippi River Basin-A Risk Assessment in Support of GLMRIS AN - 1859486520; PQ0004019250 AB - The U.S. Army Corps of Engineers is conducting the Great Lakes and Mississippi River Interbasin Study to identify the highest risk aquatic nuisance species currently established in either the Mississippi River Basin or the Great Lakes Basin and prevent their movement into a new basin. The Great Lakes and Mississippi River Interbasin Study focuses specifically on aquatic nuisance species movement through the Chicago Area Waterway System, a multi-use waterway connecting the two basins. In support of Great Lakes and Mississippi River Interbasin Study, we conducted a qualitative risk assessment for 33 aquatic nuisance species over a 50-year period of analysis based on the probability of aquatic nuisance species establishing in a new basin and the environmental, economic, and sociopolitical consequences of their establishment. Probability of establishment and consequences of establishment were assigned qualitative ratings of high, medium, or low after considering the species' current location, mobility, habitat suitability, and impacts in previously invaded systems. The establishment and consequence ratings were then combined into an overall risk rating. Seven species were characterized as posing a medium risk and two species as posing a high risk to the Mississippi River Basin. Three species were characterized as posing a medium risk to the Great Lakes Basin, but no high-risk species were identified for this basin. Risk increased over time for some aquatic nuisance species based on the time frame in which these species were considered likely to establish in the new basin. Both species traits and the need to balance multiple uses of the Chicago Area Waterway System must be considered when identifying control measures to prevent aquatic nuisance species movement between the two basins. JF - Environmental Management AU - Grippo, Mark A AU - Hlohowskyj, Ihor AU - Fox, Laura AU - Herman, Brook AU - Pothoff, Johanna AU - Yoe, Charles AU - Hayse, John AD - Argonne National Laboratory, Environmental Science Division, Building 240, 9700 S. Cass Avenue, Argonne, IL, 60439, USA, mgrippo@anl.gov Y1 - 2017/01// PY - 2017 DA - January 2017 SP - 154 EP - 173 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 59 IS - 1 SN - 0364-152X, 0364-152X KW - Environment Abstracts; Ecology Abstracts KW - USA, Illinois, Chicago KW - Rivers KW - Risk assessment KW - Environmental economics KW - Mobility KW - Lake basins KW - Basins KW - River basins KW - USA, Mississippi R. basin KW - Habitat KW - North America, Mississippi R. KW - Lakes KW - North America, Great Lakes Basin KW - Risk factors KW - North America, Great Lakes KW - Economics KW - Risk groups KW - D 04060:Management and Conservation KW - ENA 02:Toxicology & Environmental Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859486520?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Management&rft.atitle=Aquatic+Nuisance+Species+in+the+Great+Lakes+and+Mississippi+River+Basin-A+Risk+Assessment+in+Support+of+GLMRIS&rft.au=Grippo%2C+Mark+A%3BHlohowskyj%2C+Ihor%3BFox%2C+Laura%3BHerman%2C+Brook%3BPothoff%2C+Johanna%3BYoe%2C+Charles%3BHayse%2C+John&rft.aulast=Grippo&rft.aufirst=Mark&rft.date=2017-01-01&rft.volume=59&rft.issue=1&rft.spage=154&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/10.1007%2Fs00267-016-0770-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2017-01-01 N1 - Number of references - 100 N1 - Last updated - 2017-02-15 N1 - SubjectsTermNotLitGenreText - Risk assessment; Rivers; Lakes; Mobility; Risk factors; Economics; Risk groups; Basins; River basins; Habitat; Environmental economics; Lake basins; USA, Illinois, Chicago; North America, Mississippi R.; North America, Great Lakes Basin; North America, Great Lakes; USA, Mississippi R. basin DO - http://dx.doi.org/10.1007/s00267-016-0770-7 ER - TY - JOUR T1 - Aquifer recharge, depletion, and connectivity; inferences from GRACE, land surface models, and geochemical and geophysical data AN - 1859788804; 2017-006184 AB - Data from the Gravity Recovery and Climate Experiment (GRACE) and outputs of the CLM4.5 model were used to estimate recharge and depletion rates for large aquifers, investigate the connectivity of an aquifer's subbasins, and identify barriers and preferred pathways for groundwater flow within an aquifer system. The Nubian Sandstone Aquifer System and its subbasins (Dakhla, Northern Sudan Platform, and Kufra) in northeast Africa were used for demonstration purposes, and findings were tested and verified against geological, geophysical, remote sensing, geochronologic, and geochemical data. There are four major findings. (1) The average annual precipitation data over recharge areas in the southern Kufra section and the Northern Sudan Platform subbasin were estimated at 54.8 km (super 3) , and 32.8 km (super 3) , respectively, and knowing the annual extraction rates over these two areas ( approximately 0.40 + or - 0.20 km (super 3) ), recharge rates were estimated at 0.78 + or - 0.49 km (super 3) /yr and 1.44 + or - 0.42 km (super 3) /yr, respectively. (2) GRACE-derived groundwater depletion rates over the Dakhla subbasin and the Northern Kufra section were estimated at 4.44 + or - 0.42 km (super 3) /yr and 0.48 + or - 0.32 km (super 3) /yr, respectively. (3) The observed depletion in the southern parts of the Dakhla subbasin is apparently caused by the presence of the east-west-trending Uweinat-Aswan basement uplift, which impedes the south-to-north groundwater flow and hence reduces replenishment from recharge areas in the south. (4) A major northeast-southwest-trending shear zone (Pelusium shear system) is apparently providing a preferred groundwater flow pathway from the Kufra to the Dakhla subbasin. Our integrated approach provides a replicable and cost-effective model for better understanding of the hydrogeologic setting of large aquifers worldwide and for optimum management of these groundwater resources. JF - Geological Society of America Bulletin AU - Mohamed, Ahmed AU - Sultan, Mohamed AU - Ahmed, Mohamed AU - Yan, Eugene AU - Ahmed, Ezzat Y1 - 2016/12/22/ PY - 2016 DA - 2016 Dec 22 PB - Geological Society of America (GSA), Boulder, CO VL - Pre-Issue Publication SN - 0016-7606, 0016-7606 KW - water storage KW - North Africa KW - East Africa KW - sandstone KW - GRACE KW - atmospheric precipitation KW - ground water KW - sedimentary rocks KW - Tropical Rainfall Measuring Mission KW - Nubian Sandstone KW - geochemistry KW - depletion KW - time series analysis KW - Paleozoic KW - statistical analysis KW - connectivity KW - rates KW - Sudan KW - satellite methods KW - hydrochemistry KW - Mesozoic KW - aquifers KW - models KW - Egypt KW - recharge KW - hydraulic head KW - Africa KW - clastic rocks KW - remote sensing KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859788804?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geological+Society+of+America+Bulletin&rft.atitle=Aquifer+recharge%2C+depletion%2C+and+connectivity%3B+inferences+from+GRACE%2C+land+surface+models%2C+and+geochemical+and+geophysical+data&rft.au=Mohamed%2C+Ahmed%3BSultan%2C+Mohamed%3BAhmed%2C+Mohamed%3BYan%2C+Eugene%3BAhmed%2C+Ezzat&rft.aulast=Mohamed&rft.aufirst=Ahmed&rft.date=2016-12-22&rft.volume=Pre-Issue+Publication&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Geological+Society+of+America+Bulletin&rft.issn=00167606&rft_id=info:doi/10.1130%2FB31460.1 L2 - http://gsabulletin.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States | Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2017-01-01 N1 - Number of references - 72 N1 - PubXState - CO N1 - Document feature - illus. incl. sect., 1 table, geol. sketch maps N1 - Last updated - 2017-01-19 N1 - CODEN - BUGMAF N1 - SubjectsTermNotLitGenreText - Africa; aquifers; atmospheric precipitation; clastic rocks; connectivity; depletion; East Africa; Egypt; geochemistry; GRACE; ground water; hydraulic head; hydrochemistry; Mesozoic; models; North Africa; Nubian Sandstone; Paleozoic; rates; recharge; remote sensing; sandstone; satellite methods; sedimentary rocks; statistical analysis; Sudan; time series analysis; Tropical Rainfall Measuring Mission; water storage DO - http://dx.doi.org/10.1130/B31460.1 ER - TY - JOUR T1 - Two-phase deformation of lower mantle mineral analogs AN - 1863566718; 2017-008710 AB - The lower mantle is estimated to be composed of mostly bridgmanite and a smaller percentage of ferropericlase, yet very little information exists for two-phase deformation of these minerals. To better understand the rheology and active deformation mechanisms of these lower mantle minerals, especially dislocation slip and the development of crystallographic preferred orientation (CPO), we deformed mineral analogs neighborite (NaMgF (sub 3) , iso-structural with bridgmanite) and halite (NaCl, iso-structural with ferropericlase) together in the deformation-DIA at the Advanced Photon Source up to 51% axial shortening. Development of CPO was recorded in situ with X-ray diffraction, and information on microstructural evolution was collected using X-ray microtomography. Results show that when present in as little as 15% volume, the weak phase (NaCl) controls the deformation. Compared to single phase NaMgF (sub 3) samples, samples with just 15% volume NaCl show a reduction of CPO in NaMgF (sub 3) and weakening of the aggregate. Microtomography shows both NaMgF (sub 3) and NaCl form highly interconnected networks of grains. Polycrystal plasticity simulations were carried out to gain insight into slip activity, CPO evolution, and strain and stress partitioning between phases for different synthetic two-phase microstructures. The results suggest that ferropericlase may control deformation in the lower mantle and reduce CPO in bridgmanite, which implies a less viscous lower mantle and helps to explain why the lower mantle is fairly isotropic. JF - Earth and Planetary Science Letters AU - Kaercher, P AU - Miyagi, L AU - Kanitpanyacharoen, W AU - Zepeda-Alarcon, E AU - Wang, Y AU - Parkinson, D AU - Lebensohn, R A AU - De Carlo, F AU - Wenk, H R Y1 - 2016/12/15/ PY - 2016 DA - 2016 Dec 15 SP - 134 EP - 145 PB - Elsevier, Amsterdam VL - 456 SN - 0012-821X, 0012-821X KW - halides KW - fluorides KW - X-ray diffraction data KW - strain KW - microstructure KW - mantle KW - crystal structure KW - neighborite KW - preferred orientation KW - lower mantle KW - rheology KW - chlorides KW - oxides KW - plasticity KW - sodium chloride KW - experimental studies KW - pressure KW - structural analysis KW - stress KW - X-ray microtomography KW - deformation KW - high pressure KW - halite KW - X-ray data KW - viscosity KW - natural analogs KW - anvil cells KW - computed tomography data KW - ferropericlase KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863566718?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Two-phase+deformation+of+lower+mantle+mineral+analogs&rft.au=Kaercher%2C+P%3BMiyagi%2C+L%3BKanitpanyacharoen%2C+W%3BZepeda-Alarcon%2C+E%3BWang%2C+Y%3BParkinson%2C+D%3BLebensohn%2C+R+A%3BDe+Carlo%2C+F%3BWenk%2C+H+R&rft.aulast=Kaercher&rft.aufirst=P&rft.date=2016-12-15&rft.volume=456&rft.issue=&rft.spage=134&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.09.030 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2017-01-01 N1 - Number of references - 56 N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendix N1 - Last updated - 2017-02-02 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - anvil cells; chlorides; computed tomography data; crystal structure; deformation; experimental studies; ferropericlase; fluorides; halides; halite; high pressure; lower mantle; mantle; microstructure; natural analogs; neighborite; oxides; plasticity; preferred orientation; pressure; rheology; sodium chloride; strain; stress; structural analysis; viscosity; X-ray data; X-ray diffraction data; X-ray microtomography DO - http://dx.doi.org/10.1016/j.epsl.2016.09.030 ER - TY - JOUR T1 - Statistical petrology reveals a link between supercontinents cycle and mantle global climate AN - 1859789767; 2017-005906 AB - The breakup of supercontinents is accompanied by the emplacement of continental flood basalts and dike swarms, the origin of which is often attributed to mantle plumes. However, convection modeling has showed that the formation of supercontinents result in the warming of the sub-continental asthenospheric mantle (SCAM), which could also explain syn-breakup volcanism. Temperature variations during the formation then breakup of supercontinents are therefore fundamental to understand volcanism related to supercontinent cycles. Magmatic minerals record the thermal state of their magmatic sources. Here we present a data mining analysis on the first global compilation of chemical information on magmatic rocks and minerals formed over the past 600 million years: a time period spanning the aggregation and breakup of Pangea, the last supercontinent. We show that following a period of increasingly hotter Mg-rich magmatism with dominant tholeiitic affinity during the aggregation of Pangea, lower-temperature minerals crystallized within Mg-poorer magma with a dominant calc-alkaline affinity during Pangea disassembly. These trends reflect temporal changes in global mantle climate and global plate tectonics in response to continental masses assembly and dispersal. We also show that the final amalgamation of Pangea at approximately 300 Myr led to a long period of lithospheric collapse and cooling until the major step of Pangea disassembly started at approximately 125 Myr. The geological control on the geosphere magma budget has implications on the oxidation state and temperature of the Earth's outer envelopes in the Phanerozoic and may have exerted indirect influence on the evolution of climate and life on Earth. JF - American Mineralogist AU - Ganne, Jerome AU - Feng, Xiaojun AU - Rey, Patrice AU - de Andrade, Vincent Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 2768 EP - 2773 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 12 SN - 0003-004X, 0003-004X KW - supercontinents KW - cycles KW - flood basalts KW - volcanic rocks KW - Cretaceous KW - igneous rocks KW - mantle KW - rifting KW - Upper Carboniferous KW - tholeiitic composition KW - dike swarms KW - heat flow KW - basalts KW - climate KW - calc-alkalic composition KW - Lower Cretaceous KW - Pangaea KW - Paleozoic KW - global KW - statistical analysis KW - Carboniferous KW - Mesozoic KW - Phanerozoic KW - asthenosphere KW - plate tectonics KW - magmas KW - 18:Solid-earth geophysics KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789767?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Statistical+petrology+reveals+a+link+between+supercontinents+cycle+and+mantle+global+climate&rft.au=Ganne%2C+Jerome%3BFeng%2C+Xiaojun%3BRey%2C+Patrice%3Bde+Andrade%2C+Vincent&rft.aulast=Ganne&rft.aufirst=Jerome&rft.date=2016-12-01&rft.volume=101&rft.issue=12&rft.spage=2768&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5868 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2017-01-01 N1 - Number of references - 44 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2017-01-19 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - asthenosphere; basalts; calc-alkalic composition; Carboniferous; climate; Cretaceous; cycles; dike swarms; flood basalts; global; heat flow; igneous rocks; Lower Cretaceous; magmas; mantle; Mesozoic; Paleozoic; Pangaea; Phanerozoic; plate tectonics; rifting; statistical analysis; supercontinents; tholeiitic composition; Upper Carboniferous; volcanic rocks DO - http://dx.doi.org/10.2138/am-2016-5868 ER - TY - JOUR T1 - Targeted multimodal nano-reporters for pre-procedural MRI and intra-operative image-guidance AN - 1837318054; PQ0003735555 AB - Multimodal-imaging probes offer a novel approach, which can provide detail diagnostic information for the planning of image-guided therapies in clinical practice. Here we report targeted multimodal Nd3+-doped upconversion nanoparticle (UCNP) imaging reporters, integrating both magnetic resonance imaging (MRI) and real-time upconversion luminescence imaging (UCL) capabilities within a single platform. Nd3+-doped UCNPs were synthesized as a core-shell structure showing a bright visible emission upon excitation at the near infrared (minimizing biological overheating and increasing tissue penetration depth) as well as providing strong MRI T2 contrast (high r2/r1 ratio). Transcatheter intra-arterial infusion of Nd3+-doped UCNPs conjugated with anti-CD44-monoclonal antibody allowed for high performance in vivo multimodal UCL and MR imaging of hepatocellular carcinoma (HCC) in an orthotopic rat model. The resulted in vivo multimodal imaging of Nd3+ doped core-shell UCNPs combined with transcatheter intra-arterial targeting approaches successfully discriminated liver tumors from normal hepatic tissues in rats for surgical resection applications. The demonstrated multimodal UCL and MRI imaging capabilities of our multimodal UCNPs reporters suggest strong potential for in vivo visualization of tumors and precise surgical guidance to fill the gap between pre-procedural imaging and intraoperative reality. JF - Biomaterials AU - Lee, Joonseok AU - Gordon, Andrew C AU - Kim, Hacksung AU - Park, Wooram AU - Cho, Soojeong AU - Lee, Byeongdu AU - Larson, Andrew C AU - Rozhkova, Elena A AU - Kim, Dong-Hyun AD - Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA Y1 - 2016/12// PY - 2016 DA - December 2016 SP - 69 EP - 77 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 109 SN - 0142-9612, 0142-9612 KW - Biotechnology and Bioengineering Abstracts KW - Upconversion nanoparticles KW - Medical imaging KW - Cancer KW - Interventional radiology KW - Multimodal probe KW - Antibodies KW - Magnetic resonance imaging KW - Computed tomography KW - Animal models KW - Probes KW - Tumors KW - nanoparticles KW - Luminescence KW - Hepatocellular carcinoma KW - W 30920:Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837318054?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biomaterials&rft.atitle=Targeted+multimodal+nano-reporters+for+pre-procedural+MRI+and+intra-operative+image-guidance&rft.au=Lee%2C+Joonseok%3BGordon%2C+Andrew+C%3BKim%2C+Hacksung%3BPark%2C+Wooram%3BCho%2C+Soojeong%3BLee%2C+Byeongdu%3BLarson%2C+Andrew+C%3BRozhkova%2C+Elena+A%3BKim%2C+Dong-Hyun&rft.aulast=Lee&rft.aufirst=Joonseok&rft.date=2016-12-01&rft.volume=109&rft.issue=&rft.spage=69&rft.isbn=&rft.btitle=&rft.title=Biomaterials&rft.issn=01429612&rft_id=info:doi/10.1016%2Fj.biomaterials.2016.09.013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Antibodies; Computed tomography; Magnetic resonance imaging; Probes; Animal models; Tumors; Luminescence; nanoparticles; Hepatocellular carcinoma DO - http://dx.doi.org/10.1016/j.biomaterials.2016.09.013 ER - TY - JOUR T1 - Nitrosylation of Nitric-Oxide-Sensing Regulatory Proteins Containing [4Fe-4S] Clusters Gives Rise to Multiple Iron-Nitrosyl Complexes. AN - 1835667443; 27778474 AB - The reaction of protein-bound iron-sulfur (Fe-S) clusters with nitric oxide (NO) plays key roles in NO-mediated toxicity and signaling. Elucidation of the mechanism of the reaction of NO with DNA regulatory proteins that contain Fe-S clusters has been hampered by a lack of information about the nature of the iron-nitrosyl products formed. Herein, we report nuclear resonance vibrational spectroscopy (NRVS) and density functional theory (DFT) calculations that identify NO reaction products in WhiD and NsrR, regulatory proteins that use a [4Fe-4S] cluster to sense NO. This work reveals that nitrosylation yields multiple products structurally related to Roussin's Red Ester (RRE, [Fe2 (NO)4 (Cys)2 ]) and Roussin's Black Salt (RBS, [Fe4 (NO)7 S3 ]. In the latter case, the absence of 32 S/34 S shifts in the Fe-S region of the NRVS spectra suggest that a new species, Roussin's Black Ester (RBE), may be formed, in which one or more of the sulfide ligands is replaced by Cys thiolates. JF - Angewandte Chemie (International ed. in English) AU - Serrano, Pauline N AU - Wang, Hongxin AU - Crack, Jason C AU - Prior, Christopher AU - Hutchings, Matthew I AU - Thomson, Andrew J AU - Kamali, Saeed AU - Yoda, Yoshitaka AU - Zhao, Jiyong AU - Hu, Michael Y AU - Alp, Ercan E AU - Oganesyan, Vasily S AU - Le Brun, Nick E AU - Cramer, Stephen P AD - Department of Chemistry, University of California, Davis, CA, 95616, USA. ; Centre for Molecular and Structural Biochemistry, School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK. ; School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK. ; University of Tennessee Space Institute, Tullahome, TN, 37388-9700, USA. ; Research and Utilization Division, SPring-8/JASRI, 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan. ; Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA. Y1 - 2016/11/14/ PY - 2016 DA - 2016 Nov 14 SP - 14575 EP - 14579 VL - 55 IS - 47 KW - synchrotron radiation KW - iron-sulfur clusters KW - nitric oxide KW - gene regulation KW - nuclear vibrational resonance spectroscopy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1835667443?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Angewandte+Chemie+%28International+ed.+in+English%29&rft.atitle=Nitrosylation+of+Nitric-Oxide-Sensing+Regulatory+Proteins+Containing+%5B4Fe-4S%5D+Clusters+Gives+Rise+to+Multiple+Iron-Nitrosyl+Complexes.&rft.au=Serrano%2C+Pauline+N%3BWang%2C+Hongxin%3BCrack%2C+Jason+C%3BPrior%2C+Christopher%3BHutchings%2C+Matthew+I%3BThomson%2C+Andrew+J%3BKamali%2C+Saeed%3BYoda%2C+Yoshitaka%3BZhao%2C+Jiyong%3BHu%2C+Michael+Y%3BAlp%2C+Ercan+E%3BOganesyan%2C+Vasily+S%3BLe+Brun%2C+Nick+E%3BCramer%2C+Stephen+P&rft.aulast=Serrano&rft.aufirst=Pauline&rft.date=2016-11-14&rft.volume=55&rft.issue=47&rft.spage=14575&rft.isbn=&rft.btitle=&rft.title=Angewandte+Chemie+%28International+ed.+in+English%29&rft.issn=1521-3773&rft_id=info:doi/10.1002%2Fanie.201607033 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-10-25 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1002/anie.201607033 ER - TY - JOUR T1 - Electronic and nuclear contributions to time-resolved optical and X-ray absorption spectra of hematite and insights into photoelectrochemical performance AN - 1850779374; PQ0003916798 AB - Ultrafast time-resolved studies of photocatalytic thin films can provide a wealth of information crucial for understanding and thereby improving the performance of these materials by directly probing electronic structure, reaction intermediates, and charge carrier dynamics. The interpretation of transient spectra, however, can be complicated by thermally induced structural distortions, which appear within the first few picoseconds following excitation due to carrier-phonon scattering. Here we present a comparison of ex situ steady-state thermal difference spectra and transient absorption spectra spanning from NIR to hard X-ray energies of hematite thin films grown by atomic layer deposition. We find that beyond the first 100 picoseconds, the transient spectra measured for all excitation wavelengths and probe energies are almost entirely due to thermal effects as the lattice expands in response to the ultrafast temperature jump and then cools to room temperature on the microsecond timescale. At earlier times, a broad excited state absorption band that is assigned to free carriers appears at 675 nm, and the lifetime and shape of this feature also appear to be mostly independent of excitation wavelength. The combined spectroscopic data, which are modeled with density functional theory and full multiple scattering calculations, support an assignment of the optical absorption spectrum of hematite that involves two LMCT bands that nearly span the visible spectrum. Our results also suggest a framework for shifting the ligand-to-metal charge transfer absorption bands of ferric oxide films from the near-UV further into the visible part of the solar spectrum to improve solar conversion efficiency. JF - Energy & Environmental Science AU - Hayes, Dugan AU - Hadt, Ryan G AU - Emery, Jonathan D AU - Cordones, Amy A AU - Martinson, Alex BF AU - Shelby, Megan L AU - Fransted, Kelly A AU - Dahlberg, Peter D AU - Hong, Jiyun AU - Zhang, Xiaoyi AU - Kong, Qingyu AU - Schoenlein, Robert W AU - Chen, Lin X AD - Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne; IL 60439; USA Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 3754 EP - 3769 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 9 IS - 12 SN - 1754-5692, 1754-5692 KW - Environment Abstracts KW - Energy KW - Absorption KW - Temperature KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1850779374?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+%26+Environmental+Science&rft.atitle=Electronic+and+nuclear+contributions+to+time-resolved+optical+and+X-ray+absorption+spectra+of+hematite+and+insights+into+photoelectrochemical+performance&rft.au=Hayes%2C+Dugan%3BHadt%2C+Ryan+G%3BEmery%2C+Jonathan+D%3BCordones%2C+Amy+A%3BMartinson%2C+Alex+BF%3BShelby%2C+Megan+L%3BFransted%2C+Kelly+A%3BDahlberg%2C+Peter+D%3BHong%2C+Jiyun%3BZhang%2C+Xiaoyi%3BKong%2C+Qingyu%3BSchoenlein%2C+Robert+W%3BChen%2C+Lin+X&rft.aulast=Hayes&rft.aufirst=Dugan&rft.date=2016-11-01&rft.volume=9&rft.issue=12&rft.spage=3754&rft.isbn=&rft.btitle=&rft.title=Energy+%26+Environmental+Science&rft.issn=17545692&rft_id=info:doi/10.1039%2Fc6ee02266a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 94 N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Energy; Temperature; Absorption DO - http://dx.doi.org/10.1039/c6ee02266a ER - TY - JOUR T1 - Exploring the relationship between nanoscale dynamics and macroscopic rheology in natural polymer gums AN - 1850772504; PQ0003902631 AB - We report a study connecting the nanoscale and macroscale structure and dynamics of Acacia mearnsii gum as probed by small-angle X-ray scattering (SAXS), X-ray photon correlation spectroscopy (XPCS) and rheology. Acacia gum, in general, is a complex polysaccharide used extensively in industry. Over the analyzed concentration range (15 to 30 wt%) the A. mearnsii gum is found to have a gel-like linear rheology and to exhibit shear thinning flow behavior under steady shear. The gum solutions exhibited a steadily increasing elastic modulus with increasing time after they were prepared and also the emergence of shear thickening events within the shear thinning behavior, characteristic of associative polymers. XPCS measurements using gold nanoparticles as tracers were used to explore the microscopic dynamics within the biopolymer gels and revealed a two-step relaxation process with a partial decay at inaccessibly short times, suggesting caged motion of the nanoparticles, followed by a slow decay at later delay times. Non-diffusive motion evidenced by a compressed exponential line shape and an inverse relationship between relaxation time and wave vector characterizes the slow dynamics of A. mearnsii gum gels. Surprisingly, we have determined that the nanometer-scale mean square displacement of the nanoparticles showed a close relationship to the values predicted from the macroscopic elastic properties of the material, obtained through the rheology experiments. Our results demonstrate the potential applicability of the XPCS technique in the natural polymers field to connect their macroscale properties with their nanoscale structure and dynamics. JF - Soft Matter AU - Grein-Iankovski, Aline AU - Riegel-Vidotti, Izabel C AU - Simas-Tosin, Fernanda F AU - Narayanan, Suresh AU - Leheny, Robert L AU - Sandy, Alec R AD - X-ray Science Division; Advanced Photon Source; Argonne National Laboratory; Lemont; IL 60439; USA; +1 630-252-0282; +1 630-252-0281 Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 9321 EP - 9329 PB - Royal Society of Chemistry VL - 12 IS - 46 SN - 1744-683X, 1744-683X KW - Biotechnology and Bioengineering Abstracts KW - Acacia mearnsii KW - Gingiva KW - Biopolymers KW - Polysaccharides KW - Spectroscopy KW - Gels KW - Tracers KW - Thinning KW - Rheology KW - Ionizing radiation KW - X-ray scattering KW - Gold KW - nanoparticles KW - Mechanical properties KW - W 30935:Food Biotechnology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1850772504?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soft+Matter&rft.atitle=Exploring+the+relationship+between+nanoscale+dynamics+and+macroscopic+rheology+in+natural+polymer+gums&rft.au=Grein-Iankovski%2C+Aline%3BRiegel-Vidotti%2C+Izabel+C%3BSimas-Tosin%2C+Fernanda+F%3BNarayanan%2C+Suresh%3BLeheny%2C+Robert+L%3BSandy%2C+Alec+R&rft.aulast=Grein-Iankovski&rft.aufirst=Aline&rft.date=2016-11-01&rft.volume=12&rft.issue=46&rft.spage=9321&rft.isbn=&rft.btitle=&rft.title=Soft+Matter&rft.issn=1744683X&rft_id=info:doi/10.1039%2Fc6sm01492e LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 68 N1 - Last updated - 2016-12-21 N1 - SubjectsTermNotLitGenreText - Gingiva; Biopolymers; Spectroscopy; Polysaccharides; Gels; Thinning; Tracers; Rheology; Ionizing radiation; X-ray scattering; Gold; nanoparticles; Mechanical properties; Acacia mearnsii DO - http://dx.doi.org/10.1039/c6sm01492e ER - TY - JOUR T1 - Mesoscale structure of chiral nematic shells AN - 1846409406; PQ0003862680 AB - There is considerable interest in understanding and controlling topological defects in nematic liquid crystals (LCs). Confinement, in the form of droplets, has been particularly effective in that regard. Here, we employ a Landau-de Gennes formalism to explore the geometrical frustration of nematic order in shell geometries, and focus on chiral materials. By varying the chirality and thickness in uniform shells, we construct a phase diagram that includes tetravalent structures, bipolar structures (BS), bent structures and radial spherical structures (RSS). It is found that, in uniform shells, the BS-to-RSS structural transition, in response to both chirality and shell geometry, is accompanied by an abrupt change of defect positions, implying a potential use for chiral nematic shells as sensors. Moreover, we investigate thickness heterogeneity in shells and demonstrate that non-chiral and chiral nematic shells exhibit distinct equilibrium positions of their inner core that are governed by shell chirality c. JF - Soft Matter AU - Zhou, Ye AU - Guo, Ashley AU - Zhang, Rui AU - Armas-Perez, Julio C AU - Martinez-Gonzalez, Jose A AU - Rahimi, Mohammad AU - Sadati, Monirosadat AU - de Pablo, Juan J AD - Institute for Molecular Engineering; The University of Chicago; Chicago; Illinois 60637; USA; +1 773 702 7791 Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 8983 EP - 8989 PB - Royal Society of Chemistry VL - 12 IS - 44 SN - 1744-683X, 1744-683X KW - Biotechnology and Bioengineering Abstracts KW - Frustration KW - Shells KW - Crystals KW - Chirality KW - W 30955:Biosensors UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846409406?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soft+Matter&rft.atitle=Mesoscale+structure+of+chiral+nematic+shells&rft.au=Zhou%2C+Ye%3BGuo%2C+Ashley%3BZhang%2C+Rui%3BArmas-Perez%2C+Julio+C%3BMartinez-Gonzalez%2C+Jose+A%3BRahimi%2C+Mohammad%3BSadati%2C+Monirosadat%3Bde+Pablo%2C+Juan+J&rft.aulast=Zhou&rft.aufirst=Ye&rft.date=2016-11-01&rft.volume=12&rft.issue=44&rft.spage=8983&rft.isbn=&rft.btitle=&rft.title=Soft+Matter&rft.issn=1744683X&rft_id=info:doi/10.1039%2Fc6sm01284a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 34 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Frustration; Crystals; Shells; Chirality DO - http://dx.doi.org/10.1039/c6sm01284a ER - TY - JOUR T1 - Evaluation of dynamically downscaled extreme temperature using a spatially-aggregated generalized extreme value (GEV) model AN - 1837336153; PQ0003750143 AB - The weather research and forecast (WRF) model downscaling skill in extreme maximum daily temperature is evaluated by using the generalized extreme value (GEV) distribution. While the GEV distribution has been used extensively in climatology and meteorology for estimating probabilities of extreme events, accurately estimating GEV parameters based on data from a single pixel can be difficult, even with fairly long data records. This work proposes a simple method assuming that the shape parameter, the most difficult of the three parameters to estimate, does not vary over a relatively large region. This approach is applied to evaluate 31-year WRF-downscaled extreme maximum temperature through comparison with North American regional reanalysis (NARR) data. Uncertainty in GEV parameter estimates and the statistical significance in the differences of estimates between WRF and NARR are accounted for by conducting a novel bootstrap procedure that makes no assumption of temporal or spatial independence within a year, which is especially important for climate data. Despite certain biases over parts of the United States, overall, WRF shows good agreement with NARR in the spatial pattern and magnitudes of GEV parameter estimates. Both WRF and NARR show a significant increase in extreme maximum temperature over the southern Great Plains and southeastern United States in January and over the western United States in July. The GEV model shows clear benefits from the regionally constant shape parameter assumption, for example, leading to estimates of the location and scale parameters of the model that show coherent spatial patterns. JF - Climate Dynamics AU - Wang, Jiali AU - Han, Yuefeng AU - Stein, Michael L AU - Kotamarthi, Veerabhadra R AU - Huang, Whitney K AD - Environmental Science Division, Bldg. 240, Rm. 6A22, Argonne National Laboratory, 9700 South Cass Ave., Argonne, IL, 60439, USA, jialiwang@anl.gov Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 2833 EP - 2849 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 47 IS - 9-10 SN - 0930-7575, 0930-7575 KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Meteorological & Geoastrophysical Abstracts KW - Weather KW - Climate models KW - Climates KW - Climate KW - Temperature KW - Extreme values KW - USA, Southeast KW - Data reanalysis KW - Methodology KW - Evaluation KW - Maximum temperatures KW - Extreme temperatures KW - USA, Great Plains KW - Meteorology KW - Climatology KW - Benefits KW - Weather forecasting KW - Modelling KW - O 5080:Legal/Governmental KW - SW 0810:General KW - M2 551.58:Climatology (551.58) KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837336153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Climate+Dynamics&rft.atitle=Evaluation+of+dynamically+downscaled+extreme+temperature+using+a+spatially-aggregated+generalized+extreme+value+%28GEV%29+model&rft.au=Wang%2C+Jiali%3BHan%2C+Yuefeng%3BStein%2C+Michael+L%3BKotamarthi%2C+Veerabhadra+R%3BHuang%2C+Whitney+K&rft.aulast=Wang&rft.aufirst=Jiali&rft.date=2016-11-01&rft.volume=47&rft.issue=9-10&rft.spage=2833&rft.isbn=&rft.btitle=&rft.title=Climate+Dynamics&rft.issn=09307575&rft_id=info:doi/10.1007%2Fs00382-016-3000-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Number of references - 61 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Climate; Climatology; Meteorology; Extreme values; Weather forecasting; Methodology; Modelling; Extreme temperatures; Maximum temperatures; Climate models; Data reanalysis; Evaluation; Weather; Climates; Temperature; Benefits; USA, Great Plains; USA, Southeast DO - http://dx.doi.org/10.1007/s00382-016-3000-3 ER - TY - JOUR T1 - Cover Image, Volume 10, Issue 6 AN - 1837317055; PQ0003813569 AB - The cover image, by Maria Cristina Negri et al., is based on the Modeling and Analysis The economics of growing shrub willow as a bioenergy buffer on agricultural fields: A case study in the Midwest Corn Belt, DOI: . The cover image, by Maria Cristina Negri et al., is based on the Modeling and Analysis The economics of growing shrub willow as a bioenergy buffer on agricultural fields: A case study in the Midwest Corn Belt, DOI: . JF - Biofuels, Bioproducts and Biorefining AU - Ssegane, Herbert AU - Zumpf, Colleen AU - Cristina Negri, M AU - Campbell, Patty AU - Heavey, Justin P AU - Volk, Timothy A AD - Argonne National Laboratory, IL, USA. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - i PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 10 IS - 6 SN - 1932-104X, 1932-104X KW - Environment Abstracts KW - Shrubs KW - Fuel technology KW - Agricultural land KW - Case studies KW - Buffers KW - Corn KW - Economics KW - Biofuels KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837317055?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biofuels%2C+Bioproducts+and+Biorefining&rft.atitle=Cover+Image%2C+Volume+10%2C+Issue+6&rft.au=Ssegane%2C+Herbert%3BZumpf%2C+Colleen%3BCristina+Negri%2C+M%3BCampbell%2C+Patty%3BHeavey%2C+Justin+P%3BVolk%2C+Timothy+A&rft.aulast=Ssegane&rft.aufirst=Herbert&rft.date=2016-11-01&rft.volume=10&rft.issue=6&rft.spage=i&rft.isbn=&rft.btitle=&rft.title=Biofuels%2C+Bioproducts+and+Biorefining&rft.issn=1932104X&rft_id=info:doi/10.1002%2Fbbb.1733 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Last updated - 2017-01-04 N1 - SubjectsTermNotLitGenreText - Shrubs; Fuel technology; Agricultural land; Case studies; Buffers; Economics; Corn; Biofuels DO - http://dx.doi.org/10.1002/bbb.1733 ER - TY - JOUR T1 - The economics of growing shrub willow as a bioenergy buffer on agricultural fields: A case study in the Midwest Corn Belt AN - 1837307445; PQ0003813562 AB - Landscape design has been embraced as a promising approach to holistically balance multiple goals related to environmental and resource management processes to meet future provisioning and regulating ecosystem services needs. In the agricultural context, growing bioenergy crops in specific landscape positions instead of dedicated fields has the potential to improve their sustainability, provide ecosystem services, and minimize competition with other land uses. However, growing bioenergy crops in sub-productive or environmentally vulnerable parts of a field implies more complex logistics as small amounts of biomass are generated in a distributed way across the landscape. We present a novel assessment of the differences in production and logistic costs between business as usual (BAU, dedicated fields), and distributed landscape production of shrub, or short-rotation willow for bioenergy within a US Midwestern landscape. Our findings show that regardless of the mode of cropping, BAU or landscape design, growing shrub willows is unlikely to provide positive revenues (-$67 to -$303 ha super(-1) yr super(-1) at a biomass price of $46.30 Mg sub(wet) super(-1)) because of high land rental costs in this agricultural region. However, when translated into a practice cost per unit of N removed at the watershed scale (range: $1.8-37.0 kg N super(-1) yr super(-1)), the net costs are comparable to other conservation practices. The projected opportunity cost of growing willows instead of corn on underproductive areas varied between -$14 and $49 Mg sub(wet) super(-1). This highlights the potential for willows to be a cost effective choice depending on the intra-field grain productivity, biomass price and desirable concurrent ecosystem services. . JF - Biofuels, Bioproducts and Biorefining AU - Ssegane, Herbert AU - Zumpf, Colleen AU - Cristina Negri, M AU - Campbell, Patty AU - Heavey, Justin P AU - Volk, Timothy A AD - Argonne National Laboratory, IL, USA. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 776 EP - 789 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 10 IS - 6 SN - 1932-104X, 1932-104X KW - Environment Abstracts; Biotechnology and Bioengineering Abstracts KW - Resource management KW - Refining KW - Watersheds KW - Crops KW - Agricultural land KW - Corn KW - Economics KW - Vulnerability KW - Competition KW - Shrubs KW - Landscape KW - Biomass KW - Sustainability KW - Land use KW - Grain KW - Conservation KW - Biofuels KW - ENA 03:Energy KW - W 30945:Fermentation & Cell Culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837307445?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biofuels%2C+Bioproducts+and+Biorefining&rft.atitle=The+economics+of+growing+shrub+willow+as+a+bioenergy+buffer+on+agricultural+fields%3A+A+case+study+in+the+Midwest+Corn+Belt&rft.au=Ssegane%2C+Herbert%3BZumpf%2C+Colleen%3BCristina+Negri%2C+M%3BCampbell%2C+Patty%3BHeavey%2C+Justin+P%3BVolk%2C+Timothy+A&rft.aulast=Ssegane&rft.aufirst=Herbert&rft.date=2016-11-01&rft.volume=10&rft.issue=6&rft.spage=776&rft.isbn=&rft.btitle=&rft.title=Biofuels%2C+Bioproducts+and+Biorefining&rft.issn=1932104X&rft_id=info:doi/10.1002%2Fbbb.1679 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Shrubs; Resource management; Landscape; Refining; Biomass; Watersheds; Crops; Land use; Economics; Grain; Conservation; Competition; Biofuels; Sustainability; Agricultural land; Corn; Vulnerability DO - http://dx.doi.org/10.1002/bbb.1679 ER - TY - JOUR T1 - Influence of spatially dependent, modeled soil carbon emission factors on life-cycle greenhouse gas emissions of corn and cellulosic ethanol AN - 1837293290; PQ0003746993 AB - Converting land to biofuel feedstock production incurs changes in soil organic carbon (SOC) that can influence biofuel life-cycle greenhouse gas (GHG) emissions. Estimates of these land use change (LUC) and life-cycle GHG emissions affect biofuels' attractiveness and eligibility under a number of renewable fuel policies in the USA and abroad. Modeling was used to refine the spatial resolution and depth extent of domestic estimates of SOC change for land (cropland, cropland pasture, grassland, and forest) conversion scenarios to biofuel crops (corn, corn stover, switchgrass, Miscanthus, poplar, and willow) at the county level in the USA. Results show that in most regions, conversions from cropland and cropland pasture to biofuel crops led to neutral or small levels of SOC sequestration, while conversion of grassland and forest generally caused net SOC loss. SOC change results were incorporated into the Greenhouse Gases, Regulated Emissions, and Energy use in Transportation (GREET) model to assess their influence on life-cycle GHG emissions of corn and cellulosic ethanol. Total LUC GHG emissions (g CO sub(2)eq MJ super(-1)) were 2.1-9.3 for corn-, -0.7 for corn stover-, -3.4 to 12.9 for switchgrass-, and -20.1 to -6.2 for Miscanthus ethanol; these varied with SOC modeling assumptions applied. Extending the soil depth from 30 to 100 cm affected spatially explicit SOC change and overall LUC GHG emissions; however, the influence on LUC GHG emission estimates was less significant in corn and corn stover than cellulosic feedstocks. Total life-cycle GHG emissions (g CO sub(2)eq MJ super(-1), 100 cm) were estimated to be 59-66 for corn ethanol, 14 for stover ethanol, 18-26 for switchgrass ethanol, and -7 to -0.6 for Miscanthus ethanol. The LUC GHG emissions associated with poplar- and willow-derived ethanol may be higher than that for switchgrass ethanol due to lower biomass yield. JF - GCB Bioenergy AU - Qin, Zhangcai AU - Dunn, Jennifer B AU - Kwon, Hoyoung AU - Mueller, Steffen AU - Wander, Michelle M AD - Energy Systems Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 1136 EP - 1149 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 8 IS - 6 SN - 1757-1693, 1757-1693 KW - Sustainability Science Abstracts; Ecology Abstracts KW - Fuel technology KW - Life cycle analysis KW - Fuels KW - Forests KW - spatial discrimination KW - Pasture KW - Crops KW - Soil KW - Agricultural land KW - Carbon KW - Corn KW - Emissions KW - Miscanthus KW - Ethanol KW - Attraction KW - Soils (organic) KW - Biomass KW - Land use KW - Greenhouses KW - Soil depth KW - Grasslands KW - Renewable energy KW - Energy KW - Greenhouse gases KW - Biofuels KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837293290?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=GCB+Bioenergy&rft.atitle=Influence+of+spatially+dependent%2C+modeled+soil+carbon+emission+factors+on+life-cycle+greenhouse+gas+emissions+of+corn+and+cellulosic+ethanol&rft.au=Qin%2C+Zhangcai%3BDunn%2C+Jennifer+B%3BKwon%2C+Hoyoung%3BMueller%2C+Steffen%3BWander%2C+Michelle+M&rft.aulast=Qin&rft.aufirst=Zhangcai&rft.date=2016-11-01&rft.volume=8&rft.issue=6&rft.spage=1136&rft.isbn=&rft.btitle=&rft.title=GCB+Bioenergy&rft.issn=17571693&rft_id=info:doi/10.1111%2Fgcbb.12333 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Last updated - 2016-11-23 N1 - SubjectsTermNotLitGenreText - Fuels; Attraction; Forests; Soils (organic); spatial discrimination; Biomass; Pasture; Land use; Crops; Greenhouses; Grasslands; Soil depth; Carbon; Energy; Greenhouse gases; Biofuels; Ethanol; Fuel technology; Life cycle analysis; Soil; Agricultural land; Renewable energy; Corn; Emissions; Miscanthus DO - http://dx.doi.org/10.1111/gcbb.12333 ER - TY - JOUR T1 - Microbial Community Metabolic Modeling: A Community Data-Driven Network Reconstruction AN - 1811898448; PQ0003484802 AB - Metabolic network modeling of microbial communities provides an in-depth understanding of community-wide metabolic and regulatory processes. Compared to single organism analyses, community metabolic network modeling is more complex because it needs to account for interspecies interactions. To date, most approaches focus on reconstruction of high-quality individual networks so that, when combined, they can predict community behaviors as a result of interspecies interactions. However, this conventional method becomes ineffective for communities whose members are not well characterized and cannot be experimentally interrogated in isolation. Here, we tested a new approach that uses community-level data as a critical input for the network reconstruction process. This method focuses on directly predicting interspecies metabolic interactions in a community, when axenic information is insufficient. We validated our method through the case study of a bacterial photoautotroph-heterotroph consortium that was used to provide data needed for a community-level metabolic network reconstruction. Resulting simulations provided experimentally validated predictions of how a photoautotrophic cyanobacterium supports the growth of an obligate heterotrophic species by providing organic carbon and nitrogen sources. J. Cell. Physiol. 231: 2339-2345, 2016. We tested a new community metabolic network reconstruction that uses community-level data as a critical input. This method focuses on directly predicting interspecies metabolic interactions in a community, when axenic information is insufficient. We validated our method through the case study of a bacterial photoautotroph-heterotroph consortium. JF - Journal of Cellular Physiology AU - Henry, Christopher S AU - Bernstein, Hans C AU - Weisenhorn, Pamela AU - Taylor, Ronald C AU - Lee, Joon-Yong AU - Zucker, Jeremy AU - Song, Hyun-Seob AD - Division of Mathematics and Computer Science, Argonne National Laboratory, Argonne, Illinois. Y1 - 2016/11// PY - 2016 DA - November 2016 SP - 2339 EP - 2345 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 231 IS - 11 SN - 0021-9541, 0021-9541 KW - Toxicology Abstracts KW - Cyanobacteria KW - Data processing KW - Nitrogen sources KW - metabolic networks KW - Carbon sources KW - X 24300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811898448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Cellular+Physiology&rft.atitle=Microbial+Community+Metabolic+Modeling%3A+A+Community+Data-Driven+Network+Reconstruction&rft.au=Henry%2C+Christopher+S%3BBernstein%2C+Hans+C%3BWeisenhorn%2C+Pamela%3BTaylor%2C+Ronald+C%3BLee%2C+Joon-Yong%3BZucker%2C+Jeremy%3BSong%2C+Hyun-Seob&rft.aulast=Henry&rft.aufirst=Christopher&rft.date=2016-11-01&rft.volume=231&rft.issue=11&rft.spage=2339&rft.isbn=&rft.btitle=&rft.title=Journal+of+Cellular+Physiology&rft.issn=00219541&rft_id=info:doi/10.1002%2Fjcp.25428 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Data processing; Nitrogen sources; metabolic networks; Carbon sources; Cyanobacteria DO - http://dx.doi.org/10.1002/jcp.25428 ER - TY - JOUR T1 - Multispecies Biofilms Transform Selenium Oxyanions into Elemental Selenium Particles: Studies Using Combined Synchrotron X-ray Fluorescence Imaging and Scanning Transmission X-ray Microscopy. AN - 1826654145; 26824614 AB - Selenium (Se) is an element of growing environmental concern, because low aqueous concentrations can lead to biomagnification through the aquatic food web. Biofilms, naturally occurring microbial consortia, play numerous important roles in the environment, especially in biogeochemical cycling of toxic elements in aquatic systems. The complexity of naturally forming multispecies biofilms presents challenges for characterization because conventional microscopic techniques require chemical and physical modifications of the sample. Here, multispecies biofilms biotransforming selenium oxyanions were characterized using X-ray fluorescence imaging (XFI) and scanning transmission X-ray microscopy (STXM). These complementary synchrotron techniques required minimal sample preparation and were applied correlatively to the same biofilm areas. Sub-micrometer XFI showed distributions of Se and endogenous metals, while Se K-edge X-ray absorption spectroscopy indicated the presence of elemental Se (Se0). Nanoscale carbon K-edge STXM revealed the distributions of microbial cells, extracellular polymeric substances (EPS), and lipids using the protein, saccharide, and lipid signatures, respectively, together with highly localized Se0 using the Se LIII edge. Transmission electron microscopy showed the electron-dense particle diameter to be 50-700 nm, suggesting Se0 nanoparticles. The intimate association of Se0 particles with protein and polysaccharide biofilm components has implications for the bioavailability of selenium in the environment. JF - Environmental science & technology AU - Yang, Soo In AU - George, Graham N AU - Lawrence, John R AU - Kaminskyj, Susan G W AU - Dynes, James J AU - Lai, Barry AU - Pickering, Ingrid J AD - National Hydrology Research Centre, Environment Canada , Saskatoon, Saskatchewan S7N 3H5, Canada. ; Canadian Light Source , Saskatoon, Saskatchewan S7N 2V3, Canada. ; Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2016/10/04/ PY - 2016 DA - 2016 Oct 04 SP - 10343 EP - 10350 VL - 50 IS - 19 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1826654145?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Multispecies+Biofilms+Transform+Selenium+Oxyanions+into+Elemental+Selenium+Particles%3A+Studies+Using+Combined+Synchrotron+X-ray+Fluorescence+Imaging+and+Scanning+Transmission+X-ray+Microscopy.&rft.au=Yang%2C+Soo+In%3BGeorge%2C+Graham+N%3BLawrence%2C+John+R%3BKaminskyj%2C+Susan+G+W%3BDynes%2C+James+J%3BLai%2C+Barry%3BPickering%2C+Ingrid+J&rft.aulast=Yang&rft.aufirst=Soo&rft.date=2016-10-04&rft.volume=50&rft.issue=19&rft.spage=10343&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=1520-5851&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-02-16 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 ER - TY - JOUR T1 - Ability of the marine bacterium Pseudomonas fluorescens BA3SM1 to counteract the toxicity of CdSe nanoparticles. AN - 1823458868; 27523480 AB - UNLABELLEDIn the marine environment, bacteria from estuarine and coastal sediments are among the first targets of nanoparticle pollution; it is therefore relevant to improve the knowledge of interactions between bacteria and nanoparticles. In this work, the response of the marine bacterium Pseudomonas fluorescens BA3SM1 to CdSe nanocrystals (CdSe NPs) of 3nm (NP3) and 8nm (NP8) in diameter was evaluated through microscopic, physiological, biochemical and proteomic approaches. Transmission electron microscopy images showed that NP3 were able to penetrate the bacteria, while NP8 were highly concentrated around the cells, embedded in large exopolysaccharides. In our experimental conditions, both CdSe NP sizes induced a decrease in respiration during the stationary growth phase, while only NP8 caused growth retardation and a decrease in pyoverdine production. Proteomic analyses highlighted that the strain responded to CdSe NP toxicity by inducing various defence mechanisms such as cell aggregation, extracellular CdSe NP sequestration, effective protection against oxidative stress, modifications of envelope organization and properties, and cadmium export. In addition, BA3SM1 presented a biosorption capacity of 1.6×10(16)NP3/g dry weight and 1.7×10(15)NP8/g dry weight. This strain therefore appears as a promising agent for NP bioremediation processes. Proteomic data are available via ProteomeXchange with identifier PXD004012.BIOLOGICAL SIGNIFICANCETo the best of our knowledge, this is the first report focussing on the effects of CdSe colloidal nanocrystals (CdSe NPs) on a marine strain of Pseudomonas fluorescens. CdSe NPs are extensively used in the industry of renewable energies and it is regrettably expected that these pollutants will sometime soon appear in the marine environment through surface runoff, urban effluents and rivers. Bacteria living in estuarine and coastal sediments will be among the first targets of these new pollutants. The pseudomonads are frequently found in these ecosystems. They are involved in several biogeochemical cycles and are known for their high resistance to pollutants. Consequently, this study focussing on the effects of CdSe NPs on the marine strain P. fluorescens BA3SM1 is highly relevant for several reasons. First, it aims at improving knowledge about the interactions between bacteria and NPs. This is fundamental to effectively use NPs against pathogenic bacteria. Secondly, in spite of CdSe NP interactions with the bacterial cells, the strain BA3SM1 can develop various strategies to counteract CdSe NP toxicity and ensure its growth. It exhibits interesting properties to sequester CdSe NPs and it retains its ability to form biofilm. The strain therefore appears as a promising agent for NP bioremediation thanks to biofiltration processes. Finally, this study shows that CdSe NPs of 8nm in diameter cause a decrease in the secretion of siderophore pyoverdine, a secondary metabolite playing a key role in microbial ecology since it drives bacterial survival and competitiveness in ecosystems. Bacteria producing effective siderophores survive better in a Fe-deficient environment where they antagonize the growth of other microbes thought iron deprivation. Furthermore, siderophores are also employed as virulence factors in human pathogenic strains such as P. aeruginosa. Consequently, this study highlights that NPs can impact the secondary metabolism of bacteria with environmental and medical implications. In addition, in this work, Data-Dependant Acquisition (DDA) provided state of the art Mass Spectrometry data by Spectral Counting and MS1 Label-Free. The combination of these two well-known proteomic techniques including manual validations strengthened the identification and quantification of regulated proteins. Moreover, numerous correlations between proteomic analyses and other observations (physiological, biochemical, microscopic) consolidated our interpretations. JF - Journal of proteomics AU - Poirier, Isabelle AU - Kuhn, Lauriane AU - Demortière, Arnaud AU - Mirvaux, Boris AU - Hammann, Philippe AU - Chicher, Johana AU - Caplat, Christelle AU - Pallud, Marie AU - Bertrand, Martine AD - Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, 50103 Cherbourg-Octeville Cedex, France. Electronic address: isabelle.poirier@cnam.fr. ; Plateforme Protéomique Strasbourg Esplanade, CNRS FRC1589, Institut de Biologie Moléculaire et Cellulaire, 67084 Strasbourg Cedex, France. ; Laboratoire de Réactivité et Chimie des Solides, CNRS UMR 7314, Université de Picardie Jules Verne, 80039 Amiens Cedex, France; Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR 3459, 80039 Amiens Cedex, France; Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, United States. ; Laboratoire de Réactivité et Chimie des Solides, CNRS UMR 7314, Université de Picardie Jules Verne, 80039 Amiens Cedex, France; Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR 3459, 80039 Amiens Cedex, France. ; UMR BOREA, UCBN, MNHN, UPMC, CNRS-7208, IRD-207, Institut de Biologie Fondamentale et Appliquée, Normandie Université, 14032 Caen Cedex 5, France. ; Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, 50103 Cherbourg-Octeville Cedex, France. Y1 - 2016/10/04/ PY - 2016 DA - 2016 Oct 04 SP - 213 EP - 227 VL - 148 KW - Index Medicus KW - Marine bacteria KW - Oxidative stress KW - Proteomics KW - Physiological responses KW - CdSe nanoparticles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1823458868?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+proteomics&rft.atitle=Ability+of+the+marine+bacterium+Pseudomonas+fluorescens+BA3SM1+to+counteract+the+toxicity+of+CdSe+nanoparticles.&rft.au=Poirier%2C+Isabelle%3BKuhn%2C+Lauriane%3BDemorti%C3%A8re%2C+Arnaud%3BMirvaux%2C+Boris%3BHammann%2C+Philippe%3BChicher%2C+Johana%3BCaplat%2C+Christelle%3BPallud%2C+Marie%3BBertrand%2C+Martine&rft.aulast=Poirier&rft.aufirst=Isabelle&rft.date=2016-10-04&rft.volume=148&rft.issue=&rft.spage=213&rft.isbn=&rft.btitle=&rft.title=Journal+of+proteomics&rft.issn=1876-7737&rft_id=info:doi/10.1016%2Fj.jprot.2016.07.021 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-09-25 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.jprot.2016.07.021 ER - TY - JOUR T1 - Giant Polarization and High Temperature Monoclinic Phase in a Lead-Free Perovskite of Bi(Zn0.5Ti0.5)O3-BiFeO3. AN - 1835358466; 27631595 AB - Lead-free piezoelectrics have attracted increasing attention because of the awareness of lead toxicity to the environment. Here, a new bismuth-based lead-free perovskite, (1 - x)Bi(Zn0.5Ti0.5)O3-xBiFeO3, has been synthesized via a high-pressure and high-temperature method. It exhibits interesting properties of giant polarization, morphotropic phase boundary (MPB), and monoclinic phase. In particular, large tetragonality (c/a = 1.228) and giant spontaneous polarization of 110 μC/cm2 has been obtained in 0.6 Bi(Zn0.5Ti0.5)O3-0.4BiFeO3, which is much higher than most available lead-free materials and conventional Pb(Zr,Ti)O3. MPB is clearly identified to be constituted of tetragonal and monoclinic phases at x = 0.5. Notably, a single monoclinic phase has been observed at x = 0.6, which exhibits an intriguing high-temperature property. The present results are helpful to explore new lead-free MPB systems in bismuth-based compounds. JF - Inorganic chemistry AU - Pan, Zhao AU - Chen, Jun AU - Yu, Runze AU - Yamamoto, Hajime AU - Rong, Yangchun AU - Hu, Lei AU - Li, Qiang AU - Lin, Kun AU - You, Li AU - Zhao, Kun AU - Fan, Longlong AU - Ren, Yang AU - Kato, Kenichi AU - Azuma, Masaki AU - Xing, Xianran AD - Materials and Structures Laboratory, Tokyo Institute of Technology , 4259 Nagatsuta, Midori, Yokohama 226-8503, Japan. ; X-ray Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; RIKEN SPring-8 Center , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan. Y1 - 2016/10/03/ PY - 2016 DA - 2016 Oct 03 SP - 9513 EP - 9516 VL - 55 IS - 19 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1835358466?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Inorganic+chemistry&rft.atitle=Giant+Polarization+and+High+Temperature+Monoclinic+Phase+in+a+Lead-Free+Perovskite+of+Bi%28Zn0.5Ti0.5%29O3-BiFeO3.&rft.au=Pan%2C+Zhao%3BChen%2C+Jun%3BYu%2C+Runze%3BYamamoto%2C+Hajime%3BRong%2C+Yangchun%3BHu%2C+Lei%3BLi%2C+Qiang%3BLin%2C+Kun%3BYou%2C+Li%3BZhao%2C+Kun%3BFan%2C+Longlong%3BRen%2C+Yang%3BKato%2C+Kenichi%3BAzuma%2C+Masaki%3BXing%2C+Xianran&rft.aulast=Pan&rft.aufirst=Zhao&rft.date=2016-10-03&rft.volume=55&rft.issue=19&rft.spage=9513&rft.isbn=&rft.btitle=&rft.title=Inorganic+chemistry&rft.issn=1520-510X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-09-15 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 ER - TY - JOUR T1 - Directed self-assembly of nematic liquid crystals on chemically patterned surfaces: morphological states and transitions AN - 1837317893; PQ0003756994 AB - The morphology and through-film optical properties of nematic liquid crystals (LCs) confined between two surfaces may be engineered to create switches that respond to external electric fields, thereby enabling applications in optoelectronics that require fast responses and low power. Interfacial properties between the confining surfaces and the LC play a central role in device design and performance. Here we investigate the morphology of LCs confined in hybrid cells with a top surface that exhibits uniform homeotropic anchoring and a bottom surface that is chemically patterned with sub-micron and micron- wide planar anchoring stripes in a background of homeotropic anchoring. In a departure from past work, we first investigate isolated stripes, as opposed to dense periodic arrays of stripes, thereby allowing for an in-depth interpretation of the effects of patterning on LC morphology. We observe three LC morphologies and sharp transitions between them as a function of stripe width in the submicron and micron regimes. Numerical simulations and theory help explain the roles of anchoring energy, elastic deformation, entropy, pattern geometry, and coherence length of the LC in the experimentally observed behavior. The knowledge and models developed from an analysis of results generated on isolated features are then used to design dense patterned substrates for high-contrast and efficient orientational switching of LCs in response to applied fields. JF - Soft Matter AU - Li, Xiao AU - Armas-Perez, Julio C AU - Martinez-Gonzalez, Jose A AU - Liu, Xiaoying AU - Xie, Helou AU - Bishop, Camille AU - Hernandez-Ortiz, Juan P AU - Zhang, Rui AU - de Pablo, Juan J AU - Nealey, Paul F AD - Institute for Molecular Engineering; University of Chicago; Chicago; Illinois 60637; USA Y1 - 2016/10// PY - 2016 DA - October 2016 SP - 8595 EP - 8605 PB - Royal Society of Chemistry VL - 12 IS - 41 SN - 1744-683X, 1744-683X KW - Biotechnology and Bioengineering Abstracts KW - Mathematical models KW - Self-assembly KW - Energy KW - Hybrids KW - Electric fields KW - Optical properties KW - Crystals KW - Entropy KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837317893?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soft+Matter&rft.atitle=Directed+self-assembly+of+nematic+liquid+crystals+on+chemically+patterned+surfaces%3A+morphological+states+and+transitions&rft.au=Li%2C+Xiao%3BArmas-Perez%2C+Julio+C%3BMartinez-Gonzalez%2C+Jose+A%3BLiu%2C+Xiaoying%3BXie%2C+Helou%3BBishop%2C+Camille%3BHernandez-Ortiz%2C+Juan+P%3BZhang%2C+Rui%3Bde+Pablo%2C+Juan+J%3BNealey%2C+Paul+F&rft.aulast=Li&rft.aufirst=Xiao&rft.date=2016-10-01&rft.volume=12&rft.issue=41&rft.spage=8595&rft.isbn=&rft.btitle=&rft.title=Soft+Matter&rft.issn=1744683X&rft_id=info:doi/10.1039%2Fc6sm01733a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Number of references - 53 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Mathematical models; Optical properties; Electric fields; Hybrids; Energy; Self-assembly; Crystals; Entropy DO - http://dx.doi.org/10.1039/c6sm01733a ER - TY - JOUR T1 - Modeling and evaluating user behavior in exploratory visual analysis AN - 1819294512 AB - Empirical evaluation methods for visualizations have traditionally focused on assessing the outcome of the visual analytic process as opposed to characterizing how that process unfolds. There are only a handful of methods that can be used to systematically study how people use visualizations, making it difficult for researchers to capture and characterize the subtlety of cognitive and interaction behaviors users exhibit during visual analysis. To validate and improve visualization design, it is important for researchers to be able to assess and understand how users interact with visualization systems under realistic scenarios. This article presents a methodology for modeling and evaluating the behavior of users in exploratory visual analysis. We model visual exploration using a Markov chain process comprising transitions between mental, interaction, and computational states. These states and the transitions between them can be deduced from a variety of sources, including verbal transcripts, videos and audio recordings, and log files. This model enables the evaluator to characterize the cognitive and computational processes that are essential to insight acquisition in exploratory visual analysis and reconstruct the dynamics of interaction between the user and the visualization system. We illustrate this model with two exemplar user studies, and demonstrate the qualitative and quantitative analytical tools it affords. JF - Information Visualization AU - Reda, Khairi AU - Johnson, Andrew E AU - Papka, Michael E AU - Leigh, Jason AD - Argonne National Laboratory, Argonne, IL, USA; University of Hawai'i at Manoa, Honolulu, HI, USA ; University of Illinois at Chicago, Chicago, IL, USA ; Argonne National Laboratory, Argonne, IL, USA; Northern Illinois University, DeKalb, IL, USA ; University of Hawai'i at Manoa, Honolulu, HI, USA ; Argonne National Laboratory, Argonne, IL, USA; University of Hawai'i at Manoa, Honolulu, HI, USA Y1 - 2016/10// PY - 2016 DA - Oct 2016 SP - 325 EP - 339 CY - Houndmills PB - SAGE PUBLICATIONS, INC. VL - 15 IS - 4 SN - 1473-8716 KW - Computers--Artificial Intelligence KW - Exploratory visual analysis KW - visual exploration KW - evaluation KW - insight-based evaluation KW - Researchers KW - Elementary school students KW - User behavior UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819294512?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Alisa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Information+Visualization&rft.atitle=Modeling+and+evaluating+user+behavior+in+exploratory+visual+analysis&rft.au=Reda%2C+Khairi%3BJohnson%2C+Andrew+E%3BPapka%2C+Michael+E%3BLeigh%2C+Jason&rft.aulast=Reda&rft.aufirst=Khairi&rft.date=2016-10-01&rft.volume=15&rft.issue=4&rft.spage=325&rft.isbn=&rft.btitle=&rft.title=Information+Visualization&rft.issn=14738716&rft_id=info:doi/10.1177%2F1473871616638546 LA - English DB - Library & Information Science Abstracts (LISA) N1 - Copyright - © The Author(s) 2016 N1 - Last updated - 2016-09-15 DO - http://dx.doi.org/10.1177/1473871616638546 ER - TY - JOUR T1 - Large optical nonlinearity of ITO nanorods for sub-picosecond all-optical modulation of the full-visible spectrum. AN - 1835524923; 27682836 AB - Nonlinear optical responses of materials play a vital role for the development of active nanophotonic and plasmonic devices. Optical nonlinearity induced by intense optical excitation of mobile electrons in metallic nanostructures can provide large-amplitude, dynamic tuning of their electromagnetic response, which is potentially useful for all-optical processing of information and dynamic beam control. Here we report on the sub-picosecond optical nonlinearity of indium tin oxide nanorod arrays (ITO-NRAs) following intraband, on-plasmon-resonance optical pumping, which enables modulation of the full-visible spectrum with large absolute change of transmission, favourable spectral tunability and beam-steering capability. Furthermore, we observe a transient response in the microsecond regime associated with slow lattice cooling, which arises from the large aspect-ratio and low thermal conductivity of ITO-NRAs. Our results demonstrate that all-optical control of light can be achieved by using heavily doped wide-bandgap semiconductors in their transparent regime with speed faster than that of noble metals. JF - Nature communications AU - Guo, Peijun AU - Schaller, Richard D AU - Ocola, Leonidas E AU - Diroll, Benjamin T AU - Ketterson, John B AU - Chang, Robert P H AD - Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, Illinois 60208, USA. ; Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USA. ; Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA. Y1 - 2016/09/29/ PY - 2016 DA - 2016 Sep 29 SP - 12892 VL - 7 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1835524923?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+communications&rft.atitle=Large+optical+nonlinearity+of+ITO+nanorods+for+sub-picosecond+all-optical+modulation+of+the+full-visible+spectrum.&rft.au=Guo%2C+Peijun%3BSchaller%2C+Richard+D%3BOcola%2C+Leonidas+E%3BDiroll%2C+Benjamin+T%3BKetterson%2C+John+B%3BChang%2C+Robert+P+H&rft.aulast=Guo&rft.aufirst=Peijun&rft.date=2016-09-29&rft.volume=7&rft.issue=&rft.spage=12892&rft.isbn=&rft.btitle=&rft.title=Nature+communications&rft.issn=2041-1723&rft_id=info:doi/10.1038%2Fncomms12892 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-09-29 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/ncomms12892 ER - TY - JOUR T1 - Experimental evidence of reaction-induced fracturing during olivine carbonation AN - 1863566692; 2017-008677 AB - Mineral carbonation, a process that binds CO (sub 2) in the form of carbonates by silicate weathering, is widespread on the Earth's surface. Because of the abundance of silicate rocks and the permanence of the carbonated solids, sequestering CO (sub 2) via mineral carbonation has generated lots of interests. However, it is unclear how the fluid-rock reaction proceeds to completion in spite of an increasing solid volume. We conducted a mineral carbonation experiment in which a sintered olivine aggregate reacted with a sodium bicarbonate solution at reservoir conditions. Time-resolved synchrotron X-ray microtomographic images show cracks in polygonal patterns arising in the surface layers and propagating into the interior of the olivine aggregate. The nanotomography data reveal that the incipient cracks intersect at right angles. We infer that stretching due to nonuniform volume expansion generates polygonal cracking of the surfaces. Our data shed new lights on the processes that control hydration and carbonation of peridotite. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Geophysical Research Letters AU - Zhu, Wenlu AU - Fusseis, Florian AU - Lisabeth, Harrison AU - Xing, Tiange AU - Xiao, Xianghui AU - de Andrade, Vincent AU - Karato, Shun-ichiro Y1 - 2016/09/28/ PY - 2016 DA - 2016 Sep 28 SP - 9535 EP - 9543 PB - American Geophysical Union, Washington, DC VL - 43 IS - 18 SN - 0094-8276, 0094-8276 KW - silicates KW - expansion KW - subduction zones KW - igneous rocks KW - mantle KW - olivine group KW - crystal structure KW - fracturing KW - carbon dioxide KW - fractures KW - plutonic rocks KW - carbon KW - olivine KW - orthosilicates KW - spectra KW - chemical composition KW - P-T conditions KW - lithosphere KW - carbonatization KW - X-ray spectra KW - weathering KW - ultramafics KW - geochemical cycle KW - nesosilicates KW - hydration KW - physical properties KW - cracks KW - peridotites KW - carbon cycle KW - carbonates KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863566692?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geophysical+Research+Letters&rft.atitle=Experimental+evidence+of+reaction-induced+fracturing+during+olivine+carbonation&rft.au=Zhu%2C+Wenlu%3BFusseis%2C+Florian%3BLisabeth%2C+Harrison%3BXing%2C+Tiange%3BXiao%2C+Xianghui%3Bde+Andrade%2C+Vincent%3BKarato%2C+Shun-ichiro&rft.aulast=Zhu&rft.aufirst=Wenlu&rft.date=2016-09-28&rft.volume=43&rft.issue=18&rft.spage=9535&rft.isbn=&rft.btitle=&rft.title=Geophysical+Research+Letters&rft.issn=00948276&rft_id=info:doi/10.1002%2F2016GL070834 L2 - http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%291944-8007/issues LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2017-01-01 N1 - Number of references - 43 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2017-02-02 N1 - CODEN - GPRLAJ N1 - SubjectsTermNotLitGenreText - carbon; carbon cycle; carbon dioxide; carbonates; carbonatization; chemical composition; cracks; crystal structure; expansion; fractures; fracturing; geochemical cycle; hydration; igneous rocks; lithosphere; mantle; nesosilicates; olivine; olivine group; orthosilicates; P-T conditions; peridotites; physical properties; plutonic rocks; silicates; spectra; subduction zones; ultramafics; weathering; X-ray spectra DO - http://dx.doi.org/10.1002/2016GL070834 ER - TY - JOUR T1 - Gigahertz Acoustic Vibrations of Elastically Anisotropic Indium-Tin-Oxide Nanorod Arrays. AN - 1819904160; 27526053 AB - Active control of light is important for photonic integrated circuits, optical switches, and telecommunications. Coupling light with acoustic vibrations in nanoscale optical resonators offers optical modulation capabilities with high bandwidth and small footprint. Instead of using noble metals, here we introduce indium-tin-oxide nanorod arrays (ITO-NRAs) as the operating media and demonstrate optical modulation covering the visible spectral range (from 360 to 700 nm) with ∼20 GHz bandwidth through the excitation of coherent acoustic vibrations in ITO-NRAs. This broadband modulation results from the collective optical diffraction by the dielectric ITO-NRAs, and a high differential transmission modulation up to 10% is achieved through efficient near-infrared, on-plasmon-resonance pumping. By combining the frequency signatures of the vibrational modes with finite-element simulations, we further determine the anisotropic elastic constants for single-crystalline ITO, which are not known for the bulk phase. This technique to determine elastic constants using coherent acoustic vibrations of uniform nanostructures can be generalized to the study of other inorganic materials. JF - Nano letters AU - Guo, Peijun AU - Schaller, Richard D AU - Ocola, Leonidas E AU - Ketterson, John B AU - Chang, Robert P H AD - Department of Materials Science and Engineering, Northwestern University , 2220 Campus Drive, Evanston, Illinois 60208, United States. ; Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Building 440, Lemont, Illinois 60439, United States. ; Department of Physics and Astronomy, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States. Y1 - 2016/09/14/ PY - 2016 DA - 2016 Sep 14 SP - 5639 EP - 5646 VL - 16 IS - 9 KW - Index Medicus KW - nanorod KW - Indium−tin-oxide KW - elasticity KW - single crystalline KW - ultrafast spectroscopy KW - acoustic phonon UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819904160?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Gigahertz+Acoustic+Vibrations+of+Elastically+Anisotropic+Indium-Tin-Oxide+Nanorod+Arrays.&rft.au=Guo%2C+Peijun%3BSchaller%2C+Richard+D%3BOcola%2C+Leonidas+E%3BKetterson%2C+John+B%3BChang%2C+Robert+P+H&rft.aulast=Guo&rft.aufirst=Peijun&rft.date=2016-09-14&rft.volume=16&rft.issue=9&rft.spage=5639&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.6b02217 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-09-14 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.6b02217 ER - TY - JOUR T1 - Ga-Promoted Photocatalytic H2 Production over Pt/ZnO Nanostructures. AN - 1819902083; 27541830 AB - Photocatalytic H2 generation is investigated over a series of Ga-modified ZnO photocatalysts that were prepared by hydrothermal methods. It is found that the structural, textural, and optoelectronic properties remarkably depend on the Ga content. The photocatalytic activity is higher in samples with Ga content equal to or lower than 5.4 wt %, which are constituted by Zn1-xGaxO phases. Structural, textural, and optoelectronic characterization, combined with theoretical calculations, reveals the effect of Ga in the doped ZnO structures. Higher Ga incorporation leads to the formation of an additional ZnGa2O4 phase with spinel structure. The presence of such a phase is detrimental for the textural and optoelectronic properties of the photocatalysts, leading to a decrease in H2 production. When Pt is used as the cocatalyst, there is an increase of 1 order of magnitude in the activity with respect to the bare photocatalysts. This is a result of Pt acting as an electron scavenger, decreasing the electron-hole recombination rate and boosting the H2 evolution reaction. JF - ACS applied materials & interfaces AU - Núñez, Julio AU - Fresno, Fernando AU - Platero-Prats, Ana E AU - Jana, Prabhas AU - Fierro, José L G AU - Coronado, Juan M AU - Serrano, David P AU - de la Peña O'Shea, Víctor A AD - X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; Group of Sustainable Energy and Chemistry (EQS), Institute of Catayisis and Petrochemistry (ICP-CSIC) , c/Marie Curie 2, 28049 Cantoblanco, Madrid, Spain. ; Chemical and Environmental Engineering Group, ESCET, Rey Juan Carlos University , c/Tulipán s/n, 28933 Móstoles, Madrid, Spain. Y1 - 2016/09/14/ PY - 2016 DA - 2016 Sep 14 SP - 23729 EP - 23738 VL - 8 IS - 36 KW - Index Medicus KW - cocatalyst KW - Pt KW - Ga KW - ZnO KW - photocatalytic H2 production KW - doping UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819902083?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+applied+materials+%26+interfaces&rft.atitle=Ga-Promoted+Photocatalytic+H2+Production+over+Pt%2FZnO+Nanostructures.&rft.au=N%C3%BA%C3%B1ez%2C+Julio%3BFresno%2C+Fernando%3BPlatero-Prats%2C+Ana+E%3BJana%2C+Prabhas%3BFierro%2C+Jos%C3%A9+L+G%3BCoronado%2C+Juan+M%3BSerrano%2C+David+P%3Bde+la+Pe%C3%B1a+O%27Shea%2C+V%C3%ADctor+A&rft.aulast=N%C3%BA%C3%B1ez&rft.aufirst=Julio&rft.date=2016-09-14&rft.volume=8&rft.issue=36&rft.spage=23729&rft.isbn=&rft.btitle=&rft.title=ACS+applied+materials+%26+interfaces&rft.issn=1944-8252&rft_id=info:doi/10.1021%2Facsami.6b07599 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-09-14 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsami.6b07599 ER - TY - JOUR T1 - Deciphering temperature, pressure and oxygen-activity conditions of chlorite formation AN - 1859792114; 2017-004885 AB - The advantages and limits of empirical, semi-empirical and thermodynamic methods devoted to the estimation of chlorite-formation temperature are discussed briefly. The results of semi-empirical and thermodynamic approaches with different assumptions regarding the redox state of iron in chlorite are compared for a large set of natural data covering a range of pressure conditions from a few hundred bars to 18 kbar and temperature from 100 to 500 degrees C. The T-XFe (super 3+) evolution estimated using the thermodynamic approach of Vidal et al. (2005) shows a systematic increase in XFe (super 3+) with decreasing temperature, which is compatible with the decrease in aO (sub 2) buffered by magnetite- or hematite-chlorite equilibrium. This trend as well as the observed increase in vacancies in chlorite with decreasing temperature is interpreted as the incorporation of Fe (super 3+) -sudoite. The standard-state properties of this end-member have been derived to reproduce the observed T-aO (sub 2) -XFe (super 3+) evolutions. It can be used to estimate T-aO (sub 2) -XFe (super 3) values with a Chl-Qtz-H (sub 2) O multi-equilibrium approach. When combining our results with those of other studies published recently, it appears that thermodynamic approaches and mapping techniques developed for metamorphic rocks can be used to discuss the conditions of formation of very low-grade rocks where kinetics is much more sluggish than in metamorphic rocks. This requires use of appropriate analytical tools and techniques with a spatial resolution of a few hundred nanometres. JF - Clay Minerals AU - Vidal, Olivier AU - Lanari, Pierre AU - Munoz, Manuel AU - Bourdelle, Franck AU - de Andrade, Vincent Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 615 EP - 633 PB - Mineralogical Society, London VL - 51 IS - 4 SN - 0009-8558, 0009-8558 KW - silicates KW - experimental studies KW - pressure KW - oxygen KW - oxidation KW - metamorphism KW - iron KW - temperature KW - hydrothermal conditions KW - chlorite KW - ferric iron KW - hematite KW - metals KW - metamorphic rocks KW - chemical properties KW - sudoite KW - oxides KW - sheet silicates KW - reduction KW - thermodynamic properties KW - chlorite group KW - geochemistry KW - P-T conditions KW - 01B:Mineralogy of silicates KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859792114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Clay+Minerals&rft.atitle=Deciphering+temperature%2C+pressure+and+oxygen-activity+conditions+of+chlorite+formation&rft.au=Vidal%2C+Olivier%3BLanari%2C+Pierre%3BMunoz%2C+Manuel%3BBourdelle%2C+Franck%3Bde+Andrade%2C+Vincent&rft.aulast=Vidal&rft.aufirst=Olivier&rft.date=2016-09-01&rft.volume=51&rft.issue=4&rft.spage=615&rft.isbn=&rft.btitle=&rft.title=Clay+Minerals&rft.issn=00098558&rft_id=info:doi/10.1180%2Fclaymin.2016.051.4.06 L2 - http://www.minersoc.org/pages/e_journals/clay.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2017-01-01 N1 - Number of references - 46 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-19 N1 - CODEN - CLMIAF N1 - SubjectsTermNotLitGenreText - chemical properties; chlorite; chlorite group; experimental studies; ferric iron; geochemistry; hematite; hydrothermal conditions; iron; metals; metamorphic rocks; metamorphism; oxidation; oxides; oxygen; P-T conditions; pressure; reduction; sheet silicates; silicates; sudoite; temperature; thermodynamic properties DO - http://dx.doi.org/10.1180/claymin.2016.051.4.06 ER - TY - JOUR T1 - In situ 3-D mapping of pore structures and hollow grains of interplanetary dust particles with phase contrast X-ray nanotomography AN - 1840615897; 2016-094203 AB - Unlocking the 3-D structure and properties of intact chondritic porous interplanetary dust particles (IDPs) in nanoscale detail is challenging, which is also complicated by atmospheric entry heating, but is important for advancing our understanding of the formation and origins of IDPs and planetary bodies as well as dust and ice agglomeration in the outer protoplanetary disk. Here, we show that indigenous pores, pristine grains, and thermal alteration products throughout intact particles can be noninvasively visualized and distinguished morphologically and microstructurally in 3-D detail down to approximately 10 nm by exploiting phase contrast X-ray nanotomography. We have uncovered the surprisingly intricate, submicron, and nanoscale pore structures of a approximately 10-mu m-long porous IDP, consisting of two types of voids that are interconnected in 3-D space. One is morphologically primitive and mostly submicron-sized intergranular voids that are ubiquitous; the other is morphologically advanced and well-defined intragranular nanoholes that run through the approximate centers of approximately 0.3 mu m or lower submicron hollow grains. The distinct hollow grains exhibit complex 3-D morphologies but in 2-D projections resemble typical organic hollow globules observed by transmission electron microscopy. The particle, with its outer region characterized by rough vesicular structures due to thermal alteration, has turned out to be an inherently fragile and intricately submicron- and nanoporous aggregate of the sub-mu m grains or grain clumps that are delicately bound together frequently with little grain-to-grain contact in 3-D space. Abstract Copyright The Meteoritical Society, 2016. JF - Meteoritics & Planetary Science AU - Hu, Z W AU - Winarski, R P Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 1632 EP - 1642 PB - Meteoritical Society, Fayetteville, AR VL - 51 IS - 9 SN - 1086-9379, 1086-9379 KW - vesicular texture KW - phase contrast X-ray nanotomography KW - aggregate KW - in situ KW - thermal alteration KW - textures KW - parent bodies KW - microstructure KW - porous materials KW - interplanetary dust KW - porosity KW - new methods KW - early solar system KW - nondestructive methods KW - morphology KW - visualization KW - cosmic dust KW - X-ray data KW - comets KW - ice KW - agglomerate KW - computed tomography data KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=In+situ+3-D+mapping+of+pore+structures+and+hollow+grains+of+interplanetary+dust+particles+with+phase+contrast+X-ray+nanotomography&rft.au=Hu%2C+Z+W%3BWinarski%2C+R+P&rft.aulast=Hu&rft.aufirst=Z&rft.date=2016-09-01&rft.volume=51&rft.issue=9&rft.spage=1632&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12674 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 46 N1 - PubXState - AR N1 - Document feature - illus. N1 - Last updated - 2016-11-17 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - agglomerate; aggregate; comets; computed tomography data; cosmic dust; early solar system; ice; in situ; interplanetary dust; microstructure; morphology; new methods; nondestructive methods; parent bodies; phase contrast X-ray nanotomography; porosity; porous materials; textures; thermal alteration; vesicular texture; visualization; X-ray data DO - http://dx.doi.org/10.1111/maps.12674 ER - TY - JOUR T1 - ENVIRONMENTAL REVIEWS AND CASE STUDIES: Addressing the Public Outreach Responsibilities of the National Historic Preservation Act: Argonne National Laboratory's Box Digital Display Platform AN - 1819148032; PQ0003638674 AB - Federal agencies are made responsible for managing the historic properties under their jurisdiction by the National Historic Preservation Act of 1966, as amended. A component of this responsibility is to mitigate the effect of a federal undertaking on historic properties through mitigation often through documentation. Providing public access to this documentation has always been a challenge. To address the issue of public access to mitigation information, personnel from Argonne National Laboratory created the Box Digital Display Platform, a system for communicating information about historic properties to the public. The platform, developed for the US Army Dugway Proving Ground, uses short introductory videos to present a topic but can also incorporate photos, drawings, GIS information, and documents. The system operates from a small, self-contained computer that can be attached to any digital monitor via an HDMI cable. The system relies on web-based software that allows the information to be republished as a touch-screen device application or as a website. The system does not connect to the Internet, and this increases security and eliminates the software maintenance fees associated with websites. The platform is designed to incorporate the products of past documentation to make this information more accessible to the public; specifically those documentations developed using the Historic American Building Survey/ Historic American Engineering Record (HABS/HAER) standards. Argonne National Laboratory's Box Digital Display Platform can assist federal agencies in complying with the requirements of the National Historic Preservation Act. Environmental Practice 18: 209-213 (2016) JF - Environmental Practice AU - O'Rourke, Daniel J AU - Weber, Cory C AU - Richmond, Pamela D AD - Environmental Science Division, Argonne National Laboratory, Argonne, Illinois., djorourke@anl.gov Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 209 EP - 213 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 18 IS - 3 SN - 1466-0466, 1466-0466 KW - Environment Abstracts KW - Historical account KW - Mitigation KW - Responsibility KW - Jurisdiction KW - Public access KW - Buildings KW - Maintenance KW - Security KW - Computer programs KW - Case studies KW - Reviews KW - Geographic information systems KW - Internet KW - ENA 09:Land Use & Planning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819148032?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Practice&rft.atitle=ENVIRONMENTAL+REVIEWS+AND+CASE+STUDIES%3A+Addressing+the+Public+Outreach+Responsibilities+of+the+National+Historic+Preservation+Act%3A+Argonne+National+Laboratory%27s+Box+Digital+Display+Platform&rft.au=O%27Rourke%2C+Daniel+J%3BWeber%2C+Cory+C%3BRichmond%2C+Pamela+D&rft.aulast=O%27Rourke&rft.aufirst=Daniel&rft.date=2016-09-01&rft.volume=18&rft.issue=3&rft.spage=209&rft.isbn=&rft.btitle=&rft.title=Environmental+Practice&rft.issn=14660466&rft_id=info:doi/10.1017%2FS1466046616000314 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-09-01 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Historical account; Mitigation; Responsibility; Jurisdiction; Public access; Buildings; Maintenance; Computer programs; Security; Case studies; Reviews; Geographic information systems; Internet DO - http://dx.doi.org/10.1017/S1466046616000314 ER - TY - JOUR T1 - ENVIRONMENTAL REVIEWS AND CASE STUDIES: The National Park Service Visual Resource Inventory: Capturing the Historic and Cultural Values of Scenic Views AN - 1819142729; PQ0003638671 AB - Several United States (US) federal agencies have developed visual resource inventory (VRI) and management systems that reflect specific agency missions and visual resource management objectives. These programs have varied in the degree to which they incorporate historic and cultural elements and values into the scenic inventory process. The recent nationwide expansion of renewable energy and associated transmission development is causing an increase in visual impacts on both scenic and historic/cultural resources. This increase has highlighted the need for better integration of visual and historic/cultural resource assessment and management activities for land use planning purposes. The US Department of the Interior National Park Service (NPS), in response to concerns arising from potential scenic impacts from renewable energy, electric transmission, and other types of development on lands and waters near NPS units, has developed a VRI process for high-value views both within and outside NPS unit boundaries. The NPS VRI incorporates historic and cultural elements and values into the scenic resource inventory process and provides practical guidance and metrics for successfully integrating historic and cultural concerns into the NPS's scenic resource conservation efforts. This article describes the NPS VRI process and compares it with the VRI processes of the US Department of the Interior Bureau of Land Management and the US Department of Agriculture Forest Service, with respect to the incorporation of historic and cultural values. The article discusses why a scenic inventory approach that more robustly integrates the historic and cultural values of the landscape is essential for NPS landscapes, and for fulfillment of NPS's mission. Inventories are underway at many NPS units, and the results indicate that the VRI process can be used successfully to capture important historic and cultural resource information and incorporate that information into the assessment of the scenic values of views within and outside NPS units. Environmental Practice 18: 166-179 (2016) JF - Environmental Practice AU - Sullivan, Robert G AU - Meyer, Mark E AD - Environmental Scientist, Environmental Science Division EVS/240, Argonne National Laboratory, Argonne, Illinois, Sullivan@anl.gov Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 166 EP - 179 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 18 IS - 3 SN - 1466-0466, 1466-0466 KW - Environment Abstracts KW - Cultural resources KW - Agriculture KW - Historical account KW - Resource management KW - Land management KW - Landscape KW - National parks KW - Forests KW - Cultural values KW - Land use planning KW - USA KW - Case studies KW - Reviews KW - Renewable energy KW - Conservation KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819142729?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Practice&rft.atitle=ENVIRONMENTAL+REVIEWS+AND+CASE+STUDIES%3A+The+National+Park+Service+Visual+Resource+Inventory%3A+Capturing+the+Historic+and+Cultural+Values+of+Scenic+Views&rft.au=Sullivan%2C+Robert+G%3BMeyer%2C+Mark+E&rft.aulast=Sullivan&rft.aufirst=Robert&rft.date=2016-09-01&rft.volume=18&rft.issue=3&rft.spage=166&rft.isbn=&rft.btitle=&rft.title=Environmental+Practice&rft.issn=14660466&rft_id=info:doi/10.1017%2FS1466046616000260 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-09-01 N1 - Number of references - 8 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Agriculture; Cultural resources; Historical account; Resource management; Land management; Landscape; National parks; Forests; Cultural values; Land use planning; Case studies; Renewable energy; Reviews; Conservation; USA DO - http://dx.doi.org/10.1017/S1466046616000260 ER - TY - JOUR T1 - Effect of biofilm coatings at metal-oxide/water interfaces; II, Competitive sorption between Pb(II) and Zn(II) at Shewanella oneidensis/metal-oxide/water interfaces AN - 1815668070; 2016-076502 JF - Geochimica et Cosmochimica Acta AU - Wang, Yingge AU - Gelabert, Alexandre AU - Michel, F Marc AU - Choi, Yongseong AU - Eng, Peter J AU - Spormann, Alfred M AU - Brown, Gordon E, Jr Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 393 EP - 406 PB - Elsevier, New York, NY VL - 188 SN - 0016-7037, 0016-7037 KW - zinc KW - sorption KW - laser methods KW - iron oxides KW - lead KW - MINTEQA2 KW - laser scanning KW - Shewanella KW - remediation KW - partitioning KW - aluminum oxides KW - water-rock interaction KW - hematite KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - X-ray photoelectron spectra KW - water pollution KW - kinetics KW - water KW - diffusion KW - biochemistry KW - pollution KW - bioremediation KW - biogenic processes KW - metals KW - biofilms KW - bacteria KW - EXAFS data KW - synchrotrons KW - mobilization KW - chemical fractionation KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815668070?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Effect+of+biofilm+coatings+at+metal-oxide%2Fwater+interfaces%3B+II%2C+Competitive+sorption+between+Pb%28II%29+and+Zn%28II%29+at+Shewanella+oneidensis%2Fmetal-oxide%2Fwater+interfaces&rft.au=Wang%2C+Yingge%3BGelabert%2C+Alexandre%3BMichel%2C+F+Marc%3BChoi%2C+Yongseong%3BEng%2C+Peter+J%3BSpormann%2C+Alfred+M%3BBrown%2C+Gordon+E%2C+Jr&rft.aulast=Wang&rft.aufirst=Yingge&rft.date=2016-09-01&rft.volume=188&rft.issue=&rft.spage=393&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.04.054 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 67 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-11-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aluminum oxides; bacteria; biochemistry; biofilms; biogenic processes; bioremediation; chemical fractionation; diffusion; EXAFS data; hematite; iron oxides; kinetics; laser scanning; lead; metals; MINTEQA2; mobilization; oxides; partitioning; pollution; remediation; Shewanella; sorption; spectra; synchrotrons; water; water pollution; water-rock interaction; X-ray fluorescence spectra; X-ray photoelectron spectra; zinc; laser methods DO - http://dx.doi.org/10.1016/j.gca.2016.04.054 ER - TY - JOUR T1 - Pb, Cu, and Zn distributions at humic acid-coated metal oxide surfaces AN - 1815667703; 2016-076503 AB - Mineral surfaces are often coated by natural organic matter (NOM), which has a major influence on metal-ion sorption and sequestration because of the abundance of binding sites in such coatings and the changes they cause in local nanoscale environments. The effects of NOM coatings on mineral surfaces are, however, still poorly understood at the molecular level due to the complexity of these systems. In this study, we have applied long-period X-ray standing wave-fluorescence yield (LP-XSW-FY) spectroscopy to measure the partitioning of naturally present Cu(II) (0.0226%), Zn(II) (0.009%), and Pb(II) ( approximately 0.0004%) between Elliott Soil Humic Acid (ESHA) coatings and three model single-crystal metal-oxide substrates: alpha -Al (sub 2) O (sub 3) (0 0 0 1), alpha -Al (sub 2) O (sub 3) (1 -1 0 2), and alpha -Fe (sub 2) O (sub 3) (0 0 0 1). The competitive sorption effects among these metal ions for binding sites in the ESHA coatings and on the metal-oxide surfaces were investigated as a function of reaction time, calcium content, and solution pH. Pb(II) ions present in the ESHA coatings were found to redistribute to reactive alpha -Al (sub 2) O (sub 3) (1 -1 0 2) and alpha -Fe (sub 2) O (sub 3) (0 0 0 1) surfaces after 3 h of reaction (pH = 6.0, [Ca(II)] = 2 mM). Pb(II) partitioning onto these reactive metal-oxide surfaces increased with increasing reaction time (up to 7 d). In addition, the partitioning of Cu(II) and Zn(II) from the ESHA coating to the alpha -Fe (sub 2) O (sub 3) (0 0 0 1) substrate increased slightly with reaction time (2.4% and 3.7% for Cu(II) and Zn(II), respectively, after 3 h and 6.4% and 7.7% for Cu(II) and Zn(II), respectively, after 72 h of reaction time). However, no changes in the partitioning of Cu(II) and Zn(II) onto the alpha -Al (sub 2) O (sub 3) (1 -1 0 2) surface were observed with increasing reaction time, suggesting that these ions strongly complex with functional groups in the ESHA coatings. Similar results were obtained for Cu(II) and Zn(II) on the ESHA-coated alpha -Al (sub 2) O (sub 3) (1 -1 0 2) surfaces in samples without the addition of calcium. However, the amounts of Pb(II) mobilized from the ESHA coatings onto the alpha -Al (sub 2) O (sub 3) (1 -1 0 2) surfaces increased from 40% (no added Ca) to 58% (with 2 mM Ca) after 72 h of reaction time, possibly due to displacement of Pb(II) by Ca(II) from binding sites in the ESHA coatings. In contrast, Pb(II), Cu(II), and Zn(II) present in the ESHA coatings were found to be unreactive with the alpha -Al (sub 2) O (sub 3) (0 0 0 1) surface. The observed reactivities of the three ESHA-coated metal-oxide surfaces with respect to metal-ion sorption are consistent with the trend observed for the uncoated metal-oxide surfaces: alpha -Fe (sub 2) O (sub 3) (0 0 0 1) > alpha -Al (sub 2) O (sub 3) (1 -1 0 2) > alpha -Al (sub 2) O (sub 3) (0 0 0 1). In addition, Pb(II) partitioning onto alpha -Al (sub 2) O (sub 3) (1 -1 0 2) surfaces increased with increasing pH from 4.0 to 9.0 as a result of the increasingly negative surface charge. These results show that intrinsic properties (nature of binding sites, binding affinities, and surface charge) of the ESHA coatings and metal-oxide surfaces, as well as external parameters such as pH and competing ions, are key factors governing the distribution and speciation of metal ions at complex NOM/mineral interfaces. JF - Geochimica et Cosmochimica Acta AU - Wang, Yingge AU - Michel, F Marc AU - Choi, Yongseong AU - Eng, Peter J AU - Levard, Clement AU - Siebner, Hagar AU - Gu, Baohua AU - Bargar, John R AU - Brown, Gordon E, Jr Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 407 EP - 423 PB - Elsevier, New York, NY VL - 188 SN - 0016-7037, 0016-7037 KW - zinc KW - copper KW - mass spectra KW - lead KW - humic acids KW - models KW - ICP mass spectra KW - partitioning KW - organic compounds KW - organic acids KW - humic substances KW - single-crystal method KW - chemical reactions KW - aluminum oxides KW - hematite KW - metals KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - coatings KW - crystal chemistry KW - chemical composition KW - pH KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815667703?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Pb%2C+Cu%2C+and+Zn+distributions+at+humic+acid-coated+metal+oxide+surfaces&rft.au=Wang%2C+Yingge%3BMichel%2C+F+Marc%3BChoi%2C+Yongseong%3BEng%2C+Peter+J%3BLevard%2C+Clement%3BSiebner%2C+Hagar%3BGu%2C+Baohua%3BBargar%2C+John+R%3BBrown%2C+Gordon+E%2C+Jr&rft.aulast=Wang&rft.aufirst=Yingge&rft.date=2016-09-01&rft.volume=188&rft.issue=&rft.spage=407&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.05.009 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 77 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-09-01 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aluminum oxides; chemical composition; chemical reactions; coatings; copper; crystal chemistry; hematite; humic acids; humic substances; ICP mass spectra; lead; mass spectra; metals; models; organic acids; organic compounds; oxides; partitioning; pH; single-crystal method; spectra; X-ray fluorescence spectra; zinc DO - http://dx.doi.org/10.1016/j.gca.2016.05.009 ER - TY - JOUR T1 - Effect of biofilm coatings at metal-oxide/water interfaces; I, Pb(II) and Zn(II) partitioning and speciation at Shewanella oneidensis/metal-oxide/water interfaces AN - 1815667688; 2016-076501 AB - Microbial biofilms are often present as coatings on metal-oxide surfaces in natural and industrial environments and may induce significant changes in the partitioning behavior and speciation of aqueous metal ions, which in turn can impact their transport and fate. In this study, long-period X-ray standing wave-fluorescence yield (LP-XSW-FY) spectroscopy was used to measure under in situ conditions the partitioning of aqueous Pb(II) and Zn(II) between multilayer Shewanella oneidensis MR-1 biofilms and highly polished, oriented single-crystal surfaces of alpha -Al (sub 2) O (sub 3) and alpha -Fe (sub 2) O (sub 3) as a function of metal-ion concentration and time at pH 6.0. We show that after 3-h exposure time, Pb(II) binds preferentially to the alpha -Al (sub 2) O (sub 3) (1-102) and alpha -Fe (sub 2) O (sub 3) (0 0 0 1) surfaces at low Pb concentration ([Pb] = 10 (super -7) M) and then increasingly partitions into the biofilm coatings at higher concentrations (10 (super -6) to 10 (super -4) M). In contrast, Zn(II) partitions preferentially into the biofilm coating for both surfaces at all Zn concentrations studied (10 (super -7) to 10 (super -4) M). In comparison, the alpha -Al (sub 2) O (sub 3) (0 0 0 1) surface has a low affinity for both Pb(II) and Zn(II), and the biofilm coatings are the dominant sink for both ions. These findings suggest that in the presence of S. oneidensis biofilm coatings, alpha -Al (sub 2) O (sub 3) (0 0 0 1) is the least reactive surface for Pb(II) and Zn(II) compared to alpha -Al (sub 2) O (sub 3) (1-102) and alpha -Fe (sub 2) O (sub 3) (0 0 0 1). They also show that Zn(II) has a lower affinity than Pb(II) for reactive sites on alpha -Al (sub 2) O (sub 3) (1-102) and alpha -Fe (sub 2) O (sub 3) (0 0 0 1) at [Me(II)] of 10 (super -7) M; at 10 (super -5) M, the bulk of the metal ions partition into the biofilm coatings. At longer exposure times (20-24 h), both Pb(II) and Zn(II) increasingly partition to the metal-oxide surfaces at [Me(II)] = 10 (super -5) M and pH 6.0, indicating possible reaction/diffusion-controlled sorption processes. Pb L (sub III) -edge and Zn K-edge grazing-incidence extended X-ray absorption fine structure (GI-EXAFS) measurements suggest that both Pb(II) and Zn(II) ions may be complexed by carboxyl groups in S. oneidensis biofilms after 3-h exposure at pH 6.0 and [Me(II)] = 10 (super -5) M. In contrast with Burkholderia cepacia, which was used in our previous studies of monolayer biofilm-coated metal-oxide surfaces (Templeton et al., 2001), S. oneidensis MR-1 forms relatively thick biofilm coatings (6-20 mu m) that are rich in reactive functional groups and are expected to dominate metal-ion adsorption. Our results show that even thick and highly reactive biofilms like S. oneidensis do not cause much change in the intrinsic chemical reactivities of the underlying metal-oxide surfaces with respect to aqueous Pb(II) and Zn(II) and don't block reactive sites on the metal-oxide surfaces; instead they reduce the rate of Pb(II) and Zn(II) sorption onto these surfaces. JF - Geochimica et Cosmochimica Acta AU - Wang, Yingge AU - Gelabert, Alexandre AU - Michel, F Marc AU - Choi, Yongseong AU - Gescher, Johannes AU - Ona-Nguema, Georges AU - Eng, Peter J AU - Bargar, John R AU - Farges, Francois AU - Spormann, Alfred M AU - Brown, Gordon E, Jr Y1 - 2016/09// PY - 2016 DA - September 2016 SP - 368 EP - 392 PB - Elsevier, New York, NY VL - 188 SN - 0016-7037, 0016-7037 KW - zinc KW - sorption KW - laser methods KW - iron oxides KW - lead KW - MINTEQA2 KW - laser scanning KW - Shewanella KW - remediation KW - partitioning KW - aluminum oxides KW - water-rock interaction KW - hematite KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - X-ray photoelectron spectra KW - water pollution KW - kinetics KW - water KW - diffusion KW - biochemistry KW - pollution KW - bioremediation KW - biogenic processes KW - metals KW - biofilms KW - bacteria KW - EXAFS data KW - synchrotrons KW - mobilization KW - chemical fractionation KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815667688?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Effect+of+biofilm+coatings+at+metal-oxide%2Fwater+interfaces%3B+I%2C+Pb%28II%29+and+Zn%28II%29+partitioning+and+speciation+at+Shewanella+oneidensis%2Fmetal-oxide%2Fwater+interfaces&rft.au=Wang%2C+Yingge%3BGelabert%2C+Alexandre%3BMichel%2C+F+Marc%3BChoi%2C+Yongseong%3BGescher%2C+Johannes%3BOna-Nguema%2C+Georges%3BEng%2C+Peter+J%3BBargar%2C+John+R%3BFarges%2C+Francois%3BSpormann%2C+Alfred+M%3BBrown%2C+Gordon+E%2C+Jr&rft.aulast=Wang&rft.aufirst=Yingge&rft.date=2016-09-01&rft.volume=188&rft.issue=&rft.spage=368&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2016.04.052 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 113 N1 - PubXState - NY N1 - Document feature - illus. incl. 6 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-11-17 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aluminum oxides; bacteria; biochemistry; biofilms; biogenic processes; bioremediation; chemical fractionation; diffusion; EXAFS data; hematite; iron oxides; kinetics; laser scanning; lead; metals; MINTEQA2; mobilization; oxides; partitioning; pollution; remediation; Shewanella; sorption; spectra; synchrotrons; water; water pollution; water-rock interaction; X-ray fluorescence spectra; X-ray photoelectron spectra; zinc; laser methods DO - http://dx.doi.org/10.1016/j.gca.2016.04.052 ER - TY - JOUR T1 - Structure of the ent-Copalyl Diphosphate Synthase PtmT2 from Streptomyces platensis CB00739, a Bacterial Type II Diterpene Synthase. AN - 1815971136; 27490479 AB - Terpenoids are the largest and most structurally diverse family of natural products found in nature, yet their presence in bacteria is underappreciated. The carbon skeletons of terpenoids are generated through carbocation-dependent cyclization cascades catalyzed by terpene synthases (TSs). Type I and type II TSs initiate cyclization via diphosphate ionization and protonation, respectively, and protein structures of both types are known. Most plant diterpene synthases (DTSs) possess three α-helical domains (αβγ), which are thought to have arisen from the fusion of discrete, ancestral bacterial type I TSs (α) and type II TSs (βγ). Type II DTSs of bacterial origin, of which there are no structurally characterized members, are a missing piece in the structural evolution of TSs. Here, we report the first crystal structure of a type II DTS from bacteria. PtmT2 from Streptomyces platensis CB00739 was verified as an ent-copalyl diphosphate synthase involved in the biosynthesis of platensimycin and platencin. The crystal structure of PtmT2 was solved at a resolution of 1.80 Å, and docking studies suggest the catalytically active conformation of geranylgeranyl diphosphate (GGPP). Site-directed mutagenesis confirmed residues involved in binding the diphosphate moiety of GGPP and identified DxxxxE as a potential Mg(2+)-binding motif for type II DTSs of bacterial origin. Finally, both the shape and physicochemical properties of the active sites are responsible for determining specific catalytic outcomes of TSs. The structure of PtmT2 fundamentally advances the knowledge of bacterial TSs, their mechanisms, and their role in the evolution of TSs. JF - Journal of the American Chemical Society AU - Rudolf, Jeffrey D AU - Dong, Liao-Bin AU - Cao, Hongnan AU - Hatzos-Skintges, Catherine AU - Osipiuk, Jerzy AU - Endres, Michael AU - Chang, Chin-Yuan AU - Ma, Ming AU - Babnigg, Gyorgy AU - Joachimiak, Andrzej AU - Phillips, George N AU - Shen, Ben AD - Department of Chemistry, The Scripps Research Institute , Jupiter, Florida 33458, United States. ; Department of Biosciences, Rice University , Houston, Texas 77005, United States. ; Midwest Center for Structural Genomics and Structural Biology Center, Biosciences Division, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2016/08/31/ PY - 2016 DA - 2016 Aug 31 SP - 10905 EP - 10915 VL - 138 IS - 34 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815971136?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=Structure+of+the+ent-Copalyl+Diphosphate+Synthase+PtmT2+from+Streptomyces+platensis+CB00739%2C+a+Bacterial+Type+II+Diterpene+Synthase.&rft.au=Rudolf%2C+Jeffrey+D%3BDong%2C+Liao-Bin%3BCao%2C+Hongnan%3BHatzos-Skintges%2C+Catherine%3BOsipiuk%2C+Jerzy%3BEndres%2C+Michael%3BChang%2C+Chin-Yuan%3BMa%2C+Ming%3BBabnigg%2C+Gyorgy%3BJoachimiak%2C+Andrzej%3BPhillips%2C+George+N%3BShen%2C+Ben&rft.aulast=Rudolf&rft.aufirst=Jeffrey&rft.date=2016-08-31&rft.volume=138&rft.issue=34&rft.spage=10905&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Chemical+Society&rft.issn=1520-5126&rft_id=info:doi/10.1021%2Fjacs.6b04317 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-08-31 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/jacs.6b04317 ER - TY - GEN T1 - A New Leaf: Scientists Turn Carbon Dioxide Back Into Fuel AN - 1813811859 JF - Breaking Energy AU - Jared Sagoff | Argonne National Laboratory Y1 - 2016/08/24/ PY - 2016 DA - 2016 Aug 24 CY - New York PB - SyndiGate Media Inc KW - Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1813811859?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aabitrade&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Breaking+Energy&rft.atitle=A+New+Leaf%3A+Scientists+Turn+Carbon+Dioxide+Back+Into+Fuel&rft.au=Jared+Sagoff+%3B+Argonne+National+Laboratory&rft.aulast=Jared+Sagoff+%7C+Argonne+National+Laboratory&rft.aufirst=&rft.date=2016-08-24&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Breaking+Energy&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Central N1 - Copyright - Copyright © 2016 Breaking Media, Inc. All rights reserved. Provided by SyndiGate Media Inc. (Syndigate.info). N1 - Last updated - 2016-08-25 ER - TY - JOUR T1 - Structure and function of human Naa60 (NatF), a Golgi-localized bi-functional acetyltransferase. AN - 1813901113; 27550639 AB - N-terminal acetylation (Nt-acetylation), carried out by N-terminal acetyltransferases (NATs), is a conserved and primary modification of nascent peptide chains. Naa60 (also named NatF) is a recently identified NAT found only in multicellular eukaryotes. This protein was shown to locate on the Golgi apparatus and mainly catalyze the Nt-acetylation of transmembrane proteins, and it also harbors lysine N(ε)-acetyltransferase (KAT) activity to catalyze the acetylation of lysine ε-amine. Here, we report the crystal structures of human Naa60 (hNaa60) in complex with Acetyl-Coenzyme A (Ac-CoA) or Coenzyme A (CoA). The hNaa60 protein contains an amphipathic helix following its GNAT domain that may contribute to Golgi localization of hNaa60, and the β7-β8 hairpin adopted different conformations in the hNaa60(1-242) and hNaa60(1-199) crystal structures. Remarkably, we found that the side-chain of Phe 34 can influence the position of the coenzyme, indicating a new regulatory mechanism involving enzyme, co-factor and substrates interactions. Moreover, structural comparison and biochemical studies indicated that Tyr 97 and His 138 are key residues for catalytic reaction and that a non-conserved β3-β4 long loop participates in the regulation of hNaa60 activity. JF - Scientific reports AU - Chen, Ji-Yun AU - Liu, Liang AU - Cao, Chun-Ling AU - Li, Mei-Jun AU - Tan, Kemin AU - Yang, Xiaohan AU - Yun, Cai-Hong AD - Department of Biophysics, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, P. R. China. ; Structural Biology Center, Biosciences, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA. ; Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Biochemistry and Molecular Biology, Peking University Health Science Center, Beijing 100191, China. Y1 - 2016/08/23/ PY - 2016 DA - 2016 Aug 23 SP - 31425 VL - 6 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1813901113?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+reports&rft.atitle=Structure+and+function+of+human+Naa60+%28NatF%29%2C+a+Golgi-localized+bi-functional+acetyltransferase.&rft.au=Chen%2C+Ji-Yun%3BLiu%2C+Liang%3BCao%2C+Chun-Ling%3BLi%2C+Mei-Jun%3BTan%2C+Kemin%3BYang%2C+Xiaohan%3BYun%2C+Cai-Hong&rft.aulast=Chen&rft.aufirst=Ji-Yun&rft.date=2016-08-23&rft.volume=6&rft.issue=&rft.spage=31425&rft.isbn=&rft.btitle=&rft.title=Scientific+reports&rft.issn=2045-2322&rft_id=info:doi/10.1038%2Fsrep31425 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-08-23 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/srep31425 ER - TY - JOUR T1 - Consideration of land use change-induced surface albedo effects in life-cycle analysis of biofuels AN - 1827898963; PQ0003683755 AB - Land use change (LUC)-induced surface albedo effects for expansive biofuel production need to be quantified for improved understanding of biofuel climate impacts. We addressed this emerging issue for expansive biofuel production in the United States (U.S.) and compared the albedo effects with greenhouse gas emissions highlighted by traditional life-cycle analysis of biofuels. We used improved spatial representation of albedo effects in our analysis by obtaining over 1.4 million albedo observations from the Moderate Resolution Imaging Spectroradiometer flown on NASA satellites over a thousand counties representative of six Agro-Ecological Zones (AEZs) in the U.S. We utilized high-spatial-resolution, crop-specific cropland cover data from the U.S. Department of Agriculture and paired the data with the albedo data to enable consideration of various LUC scenarios. We simulated the radiative effects of LUC-induced albedo changes for seven types of crop covers using the Monte Carlo Aerosol, Cloud and Radiation model, which employs an advanced radiative transfer mechanism coupled with spatially and temporally resolved meteorological and aerosol conditions. These simulations estimated the net radiative fluxes at the top of the atmosphere as a result of the LUC-induced albedo changes, which enabled quantification of the albedo effects on the basis of radiative forcing defined by the Intergovernmental Panel on Climate Change for CO2 and other greenhouse gases effects. Finally, we quantified the LUC-induced albedo effects for production of ethanol from corn, miscanthus, and switchgrass in different AEZs of the U.S. Results show that the weighted national average albedo effect is a small cooling effect of -1.8 g CO2 equivalent (CO2e) for a mega-Joule (MJ) of corn ethanol, a relatively stronger warming effect of 12.1 g CO2e per MJ of switchgrass ethanol, and a small warming effect of 2.7 g CO2e per MJ of miscanthus ethanol. Significant variations in albedo-induced effects are found among different land conversions for the same biofuel, and among different AEZ regions for the same land conversion and biofuel. This spatial heterogeneity, owing to non-linear albedo dynamics and radiation processes, suggests highly variable LUC-induced albedo effects depending on geographical locations and vegetation. These findings provide new insights on potential climate effects by producing biofuels through considering biogeophysical as well as biogeochemical effects of biofuel production and use in the U.S. JF - Energy & Environmental Science AU - Cai, H AU - Wang, J AU - Feng, Y AU - Wang, M AU - Qin, Z AU - Dunn, J B AD - Systems Assessment Group; Energy Systems Division; Argonne National Laboratory; Argonne; IL; 60439; USA Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 2855 EP - 2867 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 9 IS - 9 SN - 1754-5692, 1754-5692 KW - Biotechnology and Bioengineering Abstracts; Environment Abstracts KW - Agriculture KW - Fuel technology KW - Geographical distribution KW - Life cycle analysis KW - Climatic changes KW - spatial discrimination KW - Crops KW - Radiation KW - Corn KW - Miscanthus KW - Ethanol KW - Aerosols KW - Data processing KW - Albedo KW - Vegetation KW - Satellites KW - imaging KW - Land use KW - Greenhouses KW - Clouds KW - USA KW - Energy KW - Spatial heterogeneity KW - Radiative transfer KW - Greenhouse gases KW - Carbon dioxide KW - Biofuels KW - W 30910:Imaging KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1827898963?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+%26+Environmental+Science&rft.atitle=Consideration+of+land+use+change-induced+surface+albedo+effects+in+life-cycle+analysis+of+biofuels&rft.au=Cai%2C+H%3BWang%2C+J%3BFeng%2C+Y%3BWang%2C+M%3BQin%2C+Z%3BDunn%2C+J+B&rft.aulast=Cai&rft.aufirst=H&rft.date=2016-08-01&rft.volume=9&rft.issue=9&rft.spage=2855&rft.isbn=&rft.btitle=&rft.title=Energy+%26+Environmental+Science&rft.issn=17545692&rft_id=info:doi/10.1039%2Fc6ee01728b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-10-01 N1 - Number of references - 50 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Agriculture; Aerosols; Geographical distribution; Data processing; Albedo; Climatic changes; Vegetation; spatial discrimination; imaging; Satellites; Land use; Crops; Greenhouses; Clouds; Energy; Spatial heterogeneity; Carbon dioxide; Biofuels; Ethanol; Fuel technology; Life cycle analysis; Radiation; Corn; Radiative transfer; Greenhouse gases; Miscanthus; USA DO - http://dx.doi.org/10.1039/c6ee01728b ER - TY - JOUR T1 - Advancing Risk Analysis for Nanoscale Materials: Report from an International Workshop on the Role of Alternative Testing Strategies for Advancement. AN - 1815976776; 27510619 AB - The Society for Risk Analysis (SRA) has a history of bringing thought leadership to topics of emerging risk. In September 2014, the SRA Emerging Nanoscale Materials Specialty Group convened an international workshop to examine the use of alternative testing strategies (ATS) for manufactured nanomaterials (NM) from a risk analysis perspective. Experts in NM environmental health and safety, human health, ecotoxicology, regulatory compliance, risk analysis, and ATS evaluated and discussed the state of the science for in vitro and other alternatives to traditional toxicology testing for NM. Based on this review, experts recommended immediate and near-term actions that would advance ATS use in NM risk assessment. Three focal areas-human health, ecological health, and exposure considerations-shaped deliberations about information needs, priorities, and the next steps required to increase confidence in and use of ATS in NM risk assessment. The deliberations revealed that ATS are now being used for screening, and that, in the near term, ATS could be developed for use in read-across or categorization decision making within certain regulatory frameworks. Participants recognized that leadership is required from within the scientific community to address basic challenges, including standardizing materials, protocols, techniques and reporting, and designing experiments relevant to real-world conditions, as well as coordination and sharing of large-scale collaborations and data. Experts agreed that it will be critical to include experimental parameters that can support the development of adverse outcome pathways. Numerous other insightful ideas for investment in ATS emerged throughout the discussions and are further highlighted in this article. JF - Risk analysis : an official publication of the Society for Risk Analysis AU - Shatkin, J A AU - Ong, Kimberly J AU - Beaudrie, Christian AU - Clippinger, Amy J AU - Hendren, Christine Ogilvie AU - Haber, Lynne T AU - Hill, Myriam AU - Holden, Patricia AU - Kennedy, Alan J AU - Kim, Baram AU - MacDonell, Margaret AU - Powers, Christina M AU - Sharma, Monita AU - Sheremeta, Lorraine AU - Stone, Vicki AU - Sultan, Yasir AU - Turley, Audrey AU - White, Ronald H AD - Vireo Advisors, Boston, MA, USA. ; Compass RM, Vancouver, CA, USA. ; PETA International Science Consortium Ltd, London, UK. ; Center for the Environmental Implications of NanoTechnology, Duke University, Durham, NC, USA. ; TERA, Cincinnati, OH, USA. ; Health Canada, Ottawa, Canada. ; UC Santa Barbara, Bren School of Environmental Science & Management, ERI, and UC CEIN, University of California, Santa Barbara, CA, USA. ; U.S. Army Engineer Research and Development Center, Environmental Laboratory, Vicksburg, MS, USA. ; Independent, Somerville, MA, USA. ; Argonne National Laboratory, Environmental Science Division, Argonne, IL, USA. ; U.S. Environmental Protection Agency, Office of Air and Radiation, Office of Transportation and Air Quality, Ann Arbor, MI, USA. ; Alberta Ingenuity Labs, Edmonton, Alberta, Canada. ; John Muir Building Gait 1 Heriot-Watt University, Edinburgh, Scotland, UK. ; Environment Canada, Gatineau, QC, Canada. ; ICF International, Durham, NC, USA. ; RH White Consultants, Silver Spring, MD, USA. Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 1520 EP - 1537 VL - 36 IS - 8 KW - Index Medicus KW - nanotoxicology KW - nanomaterials KW - expert workshop KW - Alternative testing strategies KW - risk analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815976776?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Risk+analysis+%3A+an+official+publication+of+the+Society+for+Risk+Analysis&rft.atitle=Advancing+Risk+Analysis+for+Nanoscale+Materials%3A+Report+from+an+International+Workshop+on+the+Role+of+Alternative+Testing+Strategies+for+Advancement.&rft.au=Shatkin%2C+J+A%3BOng%2C+Kimberly+J%3BBeaudrie%2C+Christian%3BClippinger%2C+Amy+J%3BHendren%2C+Christine+Ogilvie%3BHaber%2C+Lynne+T%3BHill%2C+Myriam%3BHolden%2C+Patricia%3BKennedy%2C+Alan+J%3BKim%2C+Baram%3BMacDonell%2C+Margaret%3BPowers%2C+Christina+M%3BSharma%2C+Monita%3BSheremeta%2C+Lorraine%3BStone%2C+Vicki%3BSultan%2C+Yasir%3BTurley%2C+Audrey%3BWhite%2C+Ronald+H&rft.aulast=Shatkin&rft.aufirst=J&rft.date=2016-08-01&rft.volume=36&rft.issue=8&rft.spage=1520&rft.isbn=&rft.btitle=&rft.title=Risk+analysis+%3A+an+official+publication+of+the+Society+for+Risk+Analysis&rft.issn=1539-6924&rft_id=info:doi/10.1111%2Frisa.12683 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-08-31 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1111/risa.12683 ER - TY - GEN T1 - Species differences in unlocking B-side electron transfer in bacterial reaction centers. AN - 1812891565; 27325608 AB - The structure of the bacterial photosynthetic reaction center (RC) reveals symmetry-related electron transfer (ET) pathways, but only one path is used in native RCs. Analogous mutations have been made in two Rhodobacter (R.) species. A glutamic acid at position 133 in the M subunit increases transmembrane charge separation via the naturally inactive (B-side) path through impacts on primary ET in mutant R. sphaeroidesRCs. Prior work showed that the analogous substitution in the R. capsulatusRC also increases B-side activity, but mainly affects secondary ET. The overall yields of transmembrane ET are similar, but enabled in fundamentally different ways. JF - FEBS letters AU - Dylla, Nicholas P AU - Faries, Kaitlyn M AU - Wyllie, Ryan M AU - Swenson, Angela M AU - Hanson, Deborah K AU - Holten, Dewey AU - Kirmaier, Christine AU - Laible, Philip D Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 2515 EP - 2526 VL - 590 IS - 16 KW - Index Medicus KW - time-resolved spectroscopy KW - rapid screening KW - photosynthetic bacteria KW - high-throughput mutagenesis KW - charge separation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812891565?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=FEBS+letters&rft.atitle=Species+differences+in+unlocking+B-side+electron+transfer+in+bacterial+reaction+centers.&rft.au=Dylla%2C+Nicholas+P%3BFaries%2C+Kaitlyn+M%3BWyllie%2C+Ryan+M%3BSwenson%2C+Angela+M%3BHanson%2C+Deborah+K%3BHolten%2C+Dewey%3BKirmaier%2C+Christine%3BLaible%2C+Philip+D&rft.aulast=Dylla&rft.aufirst=Nicholas&rft.date=2016-08-01&rft.volume=590&rft.issue=16&rft.spage=2515&rft.isbn=&rft.btitle=&rft.title=FEBS+letters&rft.issn=1873-3468&rft_id=info:doi/10.1002%2F1873-3468.12264 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-08-19 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1002/1873-3468.12264 ER - TY - JOUR T1 - Temperature of Earth's core constrained from melting of Fe and Fe (sub 0.9) Ni (sub 0.1) at high pressures AN - 1803777615; 2016-062981 AB - The melting points of fcc- and hcp-structured Fe (sub 0.9) Ni (sub 0.1) and Fe are measured up to 125 GPa using laser heated diamond anvil cells, synchrotron Mossbauer spectroscopy, and a recently developed fast temperature readout spectrometer. The onset of melting is detected by a characteristic drop in the time-integrated synchrotron Mossbauer signal which is sensitive to atomic motion. The thermal pressure experienced by the samples is constrained by X-ray diffraction measurements under high pressures and temperatures. The obtained best-fit melting curves of fcc-structured Fe and Fe (sub 0.9) Ni (sub 0.1) fall within the wide region bounded by previous studies. We are able to derive the gamma -epsilon -l triple point of Fe and the quasi triple point of Fe (sub 0.9) Ni (sub 0.1) to be 110 + or - 5 GPa, 3345 + or - 120 K and 116 + or - 5 GPa, 3260 + or - 120 K, respectively. The measured melting temperatures of Fe at similar pressure are slightly higher than those of Fe (sub 0.9) Ni (sub 0.1) while their one sigma uncertainties overlap. Using previously measured phonon density of states of hcp-Fe, we calculate melting curves of hcp-structured Fe and Fe (sub 0.9) Ni (sub 0.1) using our (quasi) triple points as anchors. The extrapolated Fe (sub 0.9) Ni (sub 0.1) melting curve provides an estimate for the upper bound of Earth's inner core-outer core boundary temperature of 5500 + or - 200 K. The temperature within the liquid outer core is then approximated with an adiabatic model, which constrains the upper bound of the temperature at the core side of the core-mantle boundary to be 4000 + or - 200 K. We discuss a potential melting point depression caused by light elements and the implications of the presented core-mantle boundary temperature bounds on phase relations in the lowermost part of the mantle. JF - Earth and Planetary Science Letters AU - Zhang, Dongzhou AU - Jackson, Jennifer M AU - Zhao, Jiyong AU - Sturhahn, Wolfgang AU - Alp, Ercan AU - Hu, Michael Y AU - Toellner, Thomas S AU - Murphy, Caitlin A AU - Prakapenka, Vitali B Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 72 EP - 83 PB - Elsevier, Amsterdam VL - 447 SN - 0012-821X, 0012-821X KW - X-ray diffraction data KW - crystal systems KW - mantle KW - crystal structure KW - core-mantle boundary KW - iron KW - temperature KW - synchrotron radiation KW - lower mantle KW - melting KW - phase equilibria KW - alloys KW - spectra KW - inner core KW - cubic system KW - Mossbauer spectra KW - hexagonal system KW - experimental studies KW - pressure KW - high pressure KW - outer core KW - metals KW - nickel KW - core KW - anvil cells KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803777615?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Temperature+of+Earth%27s+core+constrained+from+melting+of+Fe+and+Fe+%28sub+0.9%29+Ni+%28sub+0.1%29+at+high+pressures&rft.au=Zhang%2C+Dongzhou%3BJackson%2C+Jennifer+M%3BZhao%2C+Jiyong%3BSturhahn%2C+Wolfgang%3BAlp%2C+Ercan%3BHu%2C+Michael+Y%3BToellner%2C+Thomas+S%3BMurphy%2C+Caitlin+A%3BPrakapenka%2C+Vitali+B&rft.aulast=Zhang&rft.aufirst=Dongzhou&rft.date=2016-08-01&rft.volume=447&rft.issue=&rft.spage=72&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2016.04.026 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 87 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-10-25 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - alloys; anvil cells; core; core-mantle boundary; crystal structure; crystal systems; cubic system; experimental studies; hexagonal system; high pressure; inner core; iron; lower mantle; mantle; melting; metals; Mossbauer spectra; nickel; outer core; phase equilibria; pressure; spectra; synchrotron radiation; temperature; X-ray diffraction data DO - http://dx.doi.org/10.1016/j.epsl.2016.04.026 ER - TY - JOUR T1 - Evidence for a composite organic-inorganic fabric of belemnite rostra; implications for palaeoceanography and palaeoecology AN - 1861076983; 786112-14 AB - Carbonate skeletons of fossil marine organisms are widely used to reconstruct palaeoceanographic parameters. Specifically, the geochemistry of Jurassic and Cretaceous belemnite rostra is traditionally interpreted to represent near sea-surface seawater properties. More recently, an increasing number of workers, have reported significant scatter in geochemical data (e.g., delta (super 18) O, delta (super 13) C, element/Ca ratio) when comparing rostra from the same stratigraphic level or within a single belemnite rostrum. This scatter is not explained by differential diagenetic overprint alone. Here we report petrographic evidence on the primary ultrastructure of rostra of Megateuthis (Middle Jurassic) and Belemnitella and Gonioteuthis (Late Cretaceous). The biogenic ultrastructure consists of a filigree framework of triaxial branches and tetrahedrons of variable size forming a honeycomb-like network. Data presented here suggest that these rostra yielded as much as 50 to 90% primary pore space. On the level of a working hypothesis - and in analogy with modern cephalopods - we propose that the pore space was formerly filled with body fluid and/or organic compounds during the life time of these organisms. Intra-rostral porosity was post mortem occluded by earliest diagenetic isopachous calcite cements of a non-biogenic origin. These may have been precipitated due to increased alkalinity related to the decay of organic matter. If this holds true, then the resulting fabric represents a composite biogenic/abiogenic structure. In order to optically separate the two calcite phases forming a single calcite fibre, we employed a wide range of state-of-the-art analytical tools to thin sections and ultra-thin sections of well-preserved specimens. Pending a verification of these well-supported ultrastructural data by means of high-resolution geochemical analyses from biogenic and abiogenic phases, we suggest that these findings have significance for those using belemnite rostra as archives of their palaeoenvironment. JF - Sedimentary Geology AU - Hoffmann, Rene AU - Richter, D K AU - Neuser, R D AU - Joens, N AU - Linzmeier, B J AU - Lemanis, R E AU - Fusseis, F AU - Xiao, X AU - Immenhauser, A Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 203 EP - 215 PB - Elsevier, Amsterdam VL - 341 SN - 0037-0738, 0037-0738 KW - laser methods KW - Gonioteuthis quadrata KW - optical spectra KW - microstructure KW - paleo-oceanography KW - Europe KW - Upper Cretaceous KW - paleoecology KW - electron probe data KW - anatomy KW - Central Europe KW - Invertebrata KW - cement KW - lower Campanian KW - pH KW - high-resolution methods KW - early diagenesis KW - Cephalopoda KW - electron microscopy data KW - Belemnitella KW - Megateuthis KW - porosity KW - cathodoluminescence KW - Misburg Formation KW - diagenesis KW - southern Germany KW - Campanian KW - biozones KW - northwestern Germany KW - Coleoidea KW - carbonates KW - SEM data KW - Bajocian KW - Cretaceous KW - Belemnoidea KW - thin sections KW - fluorescence KW - Gonioteuthis KW - spectra KW - rostra KW - Mollusca KW - chemical composition KW - Belemnitidae KW - Jurassic KW - late diagenesis KW - indicators KW - Middle Jurassic KW - Megateuthis gigantea KW - Mesozoic KW - calcite KW - paleoenvironment KW - Belemnitella mucronata KW - Germany KW - image analysis KW - backscattering KW - 06A:Sedimentary petrology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861076983?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Sedimentary+Geology&rft.atitle=Evidence+for+a+composite+organic-inorganic+fabric+of+belemnite+rostra%3B+implications+for+palaeoceanography+and+palaeoecology&rft.au=Hoffmann%2C+Rene%3BRichter%2C+D+K%3BNeuser%2C+R+D%3BJoens%2C+N%3BLinzmeier%2C+B+J%3BLemanis%2C+R+E%3BFusseis%2C+F%3BXiao%2C+X%3BImmenhauser%2C+A&rft.aulast=Hoffmann&rft.aufirst=Rene&rft.date=2016-07-15&rft.volume=341&rft.issue=&rft.spage=203&rft.isbn=&rft.btitle=&rft.title=Sedimentary+Geology&rft.issn=00370738&rft_id=info:doi/10.1016%2Fj.sedgeo.2016.06.001 LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Number of references - 91 N1 - Document feature - illus. N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - anatomy; backscattering; Bajocian; Belemnitella; Belemnitella mucronata; Belemnitidae; Belemnoidea; biozones; calcite; Campanian; carbonates; cathodoluminescence; cement; Central Europe; Cephalopoda; chemical composition; Coleoidea; Cretaceous; diagenesis; early diagenesis; electron microscopy data; electron probe data; Europe; fluorescence; Germany; Gonioteuthis; Gonioteuthis quadrata; high-resolution methods; image analysis; indicators; Invertebrata; Jurassic; laser methods; late diagenesis; lower Campanian; Megateuthis; Megateuthis gigantea; Mesozoic; microstructure; Middle Jurassic; Misburg Formation; Mollusca; northwestern Germany; optical spectra; paleo-oceanography; paleoecology; paleoenvironment; pH; porosity; rostra; SEM data; southern Germany; spectra; thin sections; Upper Cretaceous DO - http://dx.doi.org/10.1016/j.sedgeo.2016.06.001 ER - TY - JOUR T1 - Hybrid nanostructures of well-organized arrays of colloidal quantum dots and a self-assembled monolayer of gold nanoparticles for enhanced fluorescence. AN - 1795868981; 27251019 AB - Hybrid nanomaterials comprised of well-organized arrays of colloidal semiconductor quantum dots (QDs) in close proximity to metal nanoparticles (NPs) represent an appealing system for high-performance, spectrum-tunable photon sources with controlled photoluminescence. Experimental realization of such materials requires well-defined QD arrays and precisely controlled QD-metal interspacing. This long-standing challenge is tackled through a strategy that synergistically combines lateral confinement and vertical stacking. Lithographically generated nanoscale patterns with tailored surface chemistry confine the QDs into well-organized arrays with high selectivity through chemical pattern directed assembly, while subsequent coating with a monolayer of close-packed Au NPs introduces the plasmonic component for fluorescence enhancement. The results show uniform fluorescence emission in large-area ordered arrays for the fabricated QD structures and demonstrate five-fold fluorescence amplification for red, yellow, and green QDs in the presence of the Au NP monolayer. Encapsulation of QDs with a silica shell is shown to extend the design space for reliable QD/metal coupling with stronger enhancement of 11 times through the tuning of QD-metal spatial separation. This approach provides new opportunities for designing hybrid nanomaterials with tailored array structures and multiple functionalities for applications such as multiplexed optical coding, color display, and quantum transduction. JF - Nanotechnology AU - Liu, Xiaoying AU - McBride, Sean P AU - Jaeger, Heinrich M AU - Nealey, Paul F AD - Institute for Molecular Engineering, 5747 South Ellis Ave, University of Chicago, Chicago, IL 60637, USA. Y1 - 2016/07/15/ PY - 2016 DA - 2016 Jul 15 SP - 285301 VL - 27 IS - 28 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1795868981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nanotechnology&rft.atitle=Hybrid+nanostructures+of+well-organized+arrays+of+colloidal+quantum+dots+and+a+self-assembled+monolayer+of+gold+nanoparticles+for+enhanced+fluorescence.&rft.au=Liu%2C+Xiaoying%3BMcBride%2C+Sean+P%3BJaeger%2C+Heinrich+M%3BNealey%2C+Paul+F&rft.aulast=Liu&rft.aufirst=Xiaoying&rft.date=2016-07-15&rft.volume=27&rft.issue=28&rft.spage=285301&rft.isbn=&rft.btitle=&rft.title=Nanotechnology&rft.issn=1361-6528&rft_id=info:doi/10.1088%2F0957-4484%2F27%2F28%2F285301 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-06-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1088/0957-4484/27/28/285301 ER - TY - JOUR T1 - Inherent structure energy is a good indicator of molecular mobility in glasses AN - 1808652255; PQ0003400163 AB - Glasses produced viaphysical vapor deposition can display greater kinetic stability and lower enthalpy than glasses prepared by liquid cooling. While the reduced enthalpy has often been used as a measure of the stability, it is not obvious whether dynamic measures of stability provide the same view. Here, we study dynamics in vapor-deposited and liquid-cooled glass films using molecular simulations of a bead-spring polymer model as well as a Lennard-Jones binary mixture in two and three dimensions. We confirm that the dynamics in vapor-deposited glasses is indeed slower than in ordinary glasses. We further show that the inherent structure energy is a good reporter of local dynamics, and that aged systems and glasses prepared by cooling at progressively slower rates exhibit the same behavior as vapor-deposited materials when they both have the same inherent structure energy. These findings suggest that the stability inferred from measurements of the energy is also manifested in dynamic observables, and they strengthen the view that vapor deposition processes provide an effective strategy for creation of stable glasses. JF - Soft Matter AU - Helfferich, Julian AU - Lyubimov, Ivan AU - Reid, Daniel AU - de Pablo, Juan J AD - Institute for Molecular Engineering; University of Chicago; 5640 South Ellis Avenue; Chicago; IL 60637; USA Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 5898 EP - 5904 PB - Royal Society of Chemistry VL - 12 IS - 27 SN - 1744-683X, 1744-683X KW - Biotechnology and Bioengineering Abstracts KW - Molecular modelling KW - Vapors KW - Enthalpy KW - Mobility KW - Energy KW - Kinetics KW - Films KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808652255?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soft+Matter&rft.atitle=Inherent+structure+energy+is+a+good+indicator+of+molecular+mobility+in+glasses&rft.au=Helfferich%2C+Julian%3BLyubimov%2C+Ivan%3BReid%2C+Daniel%3Bde+Pablo%2C+Juan+J&rft.aulast=Helfferich&rft.aufirst=Julian&rft.date=2016-07-01&rft.volume=12&rft.issue=27&rft.spage=5898&rft.isbn=&rft.btitle=&rft.title=Soft+Matter&rft.issn=1744683X&rft_id=info:doi/10.1039%2Fc6sm00810k LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Number of references - 35 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Molecular modelling; Enthalpy; Vapors; Mobility; Kinetics; Energy; Films DO - http://dx.doi.org/10.1039/c6sm00810k ER - TY - JOUR T1 - A joint probability approach for coincidental flood frequency analysis at ungauged basin confluences AN - 1808611131; PQ0003285549 AB - A reliable and accurate flood frequency analysis at the confluence of streams is of importance. Given that long-term peak flow observations are often unavailable at tributary confluences, at a practical level, this paper presents a joint probability approach (JPA) to address the coincidental flood frequency analysis at the ungauged confluence of two streams based on the flow rate data from the upstream tributaries. One case study is performed for comparison against several traditional approaches, including the position-plotting formula, the univariate flood frequency analysis, and the National Flood Frequency Program developed by US Geological Survey. It shows that the results generated by the JPA approach agree well with the floods estimated by the plotting position and univariate flood frequency analysis based on the observation data. JF - Natural Hazards AU - Wang, Cheng AD - Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, 50010, USA, wangcheng@anl.gov Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 1727 EP - 1741 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 82 IS - 3 SN - 0921-030X, 0921-030X KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Environment Abstracts; Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts KW - Flow KW - Basins KW - Geological Surveys KW - Freshwater KW - Streams KW - Flow rates KW - Hazards KW - Frequency analysis KW - Case studies KW - Flood frequency analysis KW - Floods KW - Upstream KW - Hydrologic Data KW - Tributaries KW - Case Studies KW - River discharge KW - Geological surveys KW - Flood Frequency KW - Confluence KW - Flood frequencies KW - SW 0810:General KW - M2 551.5:General (551.5) KW - Q2 09182:Methods and instruments KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808611131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+Hazards&rft.atitle=A+joint+probability+approach+for+coincidental+flood+frequency+analysis+at+ungauged+basin+confluences&rft.au=Wang%2C+Cheng&rft.aulast=Wang&rft.aufirst=Cheng&rft.date=2016-07-01&rft.volume=82&rft.issue=3&rft.spage=1727&rft.isbn=&rft.btitle=&rft.title=Natural+Hazards&rft.issn=0921030X&rft_id=info:doi/10.1007%2Fs11069-016-2265-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Number of references - 40 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Hazards; Frequency analysis; Floods; Geological surveys; River discharge; Streams; Tributaries; Flood frequency analysis; Flood frequencies; Confluence; Case studies; Basins; Upstream; Flow rates; Flow; Case Studies; Geological Surveys; Hydrologic Data; Flood Frequency; Freshwater DO - http://dx.doi.org/10.1007/s11069-016-2265-5 ER - TY - JOUR T1 - N-linked glycosylation of SV2 is required for binding and uptake of botulinum neurotoxin A. AN - 1802736061; 27294781 AB - Botulinum neurotoxin serotype A1 (BoNT/A1), a licensed drug widely used for medical and cosmetic applications, exerts its action by invading motoneurons. Here we report a 2.0-Å-resolution crystal structure of the BoNT/A1 receptor-binding domain in complex with its neuronal receptor, glycosylated human SV2C. We found that the neuronal tropism of BoNT/A1 requires recognition of both the peptide moiety and an N-linked glycan on SV2. This N-glycan-which is conserved in all SV2 isoforms across vertebrates-is essential for BoNT/A1 binding to neurons and for its potent neurotoxicity. The glycan-binding interface on SV2 is targeted by a human BoNT/A1-neutralizing antibody currently licensed as an antibotulism drug. Our studies reveal a new paradigm of host-pathogen interactions, in which pathogens exploit conserved host post-translational modifications, thereby achieving highly specific receptor binding while also tolerating genetic changes across multiple isoforms of receptors. JF - Nature structural & molecular biology AU - Yao, Guorui AU - Zhang, Sicai AU - Mahrhold, Stefan AU - Lam, Kwok-Ho AU - Stern, Daniel AU - Bagramyan, Karine AU - Perry, Kay AU - Kalkum, Markus AU - Rummel, Andreas AU - Dong, Min AU - Jin, Rongsheng AD - Department of Physiology and Biophysics, University of California, Irvine, Irvine, California, USA. ; Department of Urology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA. ; Institut für Toxikologie, Medizinische Hochschule Hannover, Hannover, Germany. ; Centre for Biological Threats and Special Pathogens-Biological Toxins (ZBS3), Robert Koch-Institut, Berlin, Germany. ; Department of Molecular Immunology, Beckman Research Institute of City of Hope, Duarte, California, USA. ; NE-CAT, Argonne National Laboratory, Department of Chemistry and Chemical Biology, Cornell University, Argonne, Illinois, USA. Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 656 EP - 662 VL - 23 IS - 7 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1802736061?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+structural+%26+molecular+biology&rft.atitle=N-linked+glycosylation+of+SV2+is+required+for+binding+and+uptake+of+botulinum+neurotoxin+A.&rft.au=Yao%2C+Guorui%3BZhang%2C+Sicai%3BMahrhold%2C+Stefan%3BLam%2C+Kwok-Ho%3BStern%2C+Daniel%3BBagramyan%2C+Karine%3BPerry%2C+Kay%3BKalkum%2C+Markus%3BRummel%2C+Andreas%3BDong%2C+Min%3BJin%2C+Rongsheng&rft.aulast=Yao&rft.aufirst=Guorui&rft.date=2016-07-01&rft.volume=23&rft.issue=7&rft.spage=656&rft.isbn=&rft.btitle=&rft.title=Nature+structural+%26+molecular+biology&rft.issn=1545-9985&rft_id=info:doi/10.1038%2Fnsmb.3245 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-07-07 N1 - Date revised - 2017-02-28 N1 - SuppNotes - Cited By: Curr Top Microbiol Immunol. 2013;364:61-90 [23239349] Infect Immun. 2013 Oct;81(10):3894-902 [23918782] J Mol Biol. 2007 May 4;368(3):767-79 [17368483] J Infect Dis. 2014 Jan 15;209(2):183-91 [24106296] Cell Microbiol. 2011 Nov;13(11):1731-43 [21790947] Neuroscience. 1999;94(4):1279-90 [10625067] Antimicrob Agents Chemother. 2014 Sep;58(9):5047-53 [24913160] J Appl Crystallogr. 2007 Aug 1;40(Pt 4):658-674 [19461840] Acta Crystallogr D Biol Crystallogr. 2010 Jan;66(Pt 1):12-21 [20057044] Nature. 2006 Dec 21;444(7122):1096-100 [17167418] J Mol Recognit. 1999 Sep-Oct;12(5):279-84 [10556875] Science. 2006 Apr 28;312(5773):592-6 [16543415] Protein Expr Purif. 2012 Jul;84(1):147-53 [22580292] Mol Microbiol. 2004 Feb;51(3):631-43 [14731268] J Biotechnol. 2012 Oct 31;161(3):336-48 [22814405] FEBS Lett. 2014 Apr 2;588(7):1087-93 [24583011] Nature. 2014 Jan 2;505(7481):108-11 [24240280] Cell. 2014 Sep 25;159(1):69-79 [25259921] J Infect Dis. 2016 Feb 1;213(3):379-85 [26068781] Trends Microbiol. 2004 Oct;12(10):442-6 [15381192] Acta Crystallogr D Biol Crystallogr. 2003 Jul;59(Pt 7):1131-7 [12832755] Mol Biol Cell. 2008 Dec;19(12 ):5226-37 [18815274] Science. 2015 Feb 20;347(6224):847-53 [25700513] J Infect Dis. 2016 May 15;213(10):1606-14 [26936913] Nat Biotechnol. 2007 Jan;25(1):107-16 [17173035] Anal Chem. 2015 Apr 7;87(7):3911-7 [25731972] Nat Struct Mol Biol. 2013 Jul;20(7):796-803 [23708606] Genome Announc. 2014 Dec 11;2(6):null [25502671] PLoS Pathog. 2011 Mar;7(3):e1002008 [21483489] Nature. 2015 Apr 2;520(7545):109-13 [25581790] Annu Rev Biochem. 2000;69:531-69 [10966468] Toxins (Basel). 2015 Nov 25;7(12 ):4895-905 [26610569] Nat Rev Microbiol. 2014 Aug;12(8):535-49 [24975322] Nature. 1992 Jan 30;355(6359):472-5 [18481394] FEBS Lett. 2006 Apr 3;580(8):2011-4 [16545378] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] Nature. 2006 Dec 21;444(7122):1092-5 [17167421] PLoS Pathog. 2008 Aug 15;4(8):e1000129 [18704164] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):125-32 [20124692] J Neurochem. 2009 Sep;110(6):1942-54 [19650874] PLoS One. 2015 Feb 06;10(2):e0116381 [25658638] Science. 2001 Mar 23;291(5512):2364-9 [11269317] Biochemistry. 2009 Jun 23;48(24):5631-41 [19476346] J Chem Inf Model. 2011 Oct 24;51(10):2778-86 [21919503] Conflict of Interest: The authors declare no competing financial interests. N1 - Last updated - 2017-02-28 DO - http://dx.doi.org/10.1038/nsmb.3245 ER - TY - JOUR T1 - Biochemical and Structural Characterization of a Five-domain GH115 α-Glucuronidase from the Marine Bacterium Saccharophagus degradans 2-40T. AN - 1801425138; 27129264 AB - Glucuronic acid (GlcAp) and/or methylglucuronic acid (MeGlcAp) decorate the major forms of xylan in hardwood and coniferous softwoods as well as many cereal grains. Accordingly, the complete utilization of glucuronoxylans or conversion to sugar precursors requires the action of main chain xylanases as well as α-glucuronidases that release the α- (1→2)-linked (Me)GlcAp side groups. Herein, a family GH115 enzymefrom the marine bacterium Saccharophagus degradans 2-40(T), SdeAgu115A, demonstrated activity toward glucuronoxylan and oligomers thereof with preference toward MeGlcAp linked to internal xylopyranosyl residues. Unique biochemical characteristics of NaCl activation were also observed. The crystal structure of SdeAgu115A revealed a five-domain architecture, with an additional insertion C(+) domain that had significant impact on the domain arrangement of SdeAgu115A monomer and its dimerization. The participation of domain C(+) in substrate binding was supported by reduced substrate inhibition upon introducing W773A, W689A, and F696A substitutions within this domain. In addition to Asp-335, the catalytic essentiality of Glu-216 was revealed by site-specific mutagenesis. A primary sequence analysis suggested that the SdeAgu115A architecture is shared by more than half of GH115 members, thus defining a distinct archetype for GH115 enzymes. JF - The Journal of biological chemistry AU - Wang, Weijun AU - Yan, Ruoyu AU - Nocek, Boguslaw P AU - Vuong, Thu V AU - Di Leo, Rosa AU - Xu, Xiaohui AU - Cui, Hong AU - Gatenholm, Paul AU - Toriz, Guillermo AU - Tenkanen, Maija AU - Savchenko, Alexei AU - Master, Emma R AD - From the Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario M5S 3E5, Canada. ; the Structural Biology Center, Biosciences Division, Argonne National Laboratory, Argonne, Illinois 60439. ; the Department of Chemistry and Chemical Engineering, Wallenberg Wood Science Center and Biopolymer Technology, Chalmers University of Technology, Kemivägen 4, Gothenburg 412 96, Sweden. ; the Department of Chemistry and Chemical Engineering, Wallenberg Wood Science Center and Biopolymer Technology, Chalmers University of Technology, Kemivägen 4, Gothenburg 412 96, Sweden, the Department of Wood, Cellulose and Paper Research, University of Guadalajara, Guadalajara 44100, Mexico, and. ; the Department of Food and Environmental Sciences, University of Helsinki, P.O. Box 27, Helsinki 00014, Finland. ; From the Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario M5S 3E5, Canada, alexei.savchenko@utoronto.ca. ; From the Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario M5S 3E5, Canada, emma.master@utoronto.ca. Y1 - 2016/07/01/ PY - 2016 DA - 2016 Jul 01 SP - 14120 EP - 14133 VL - 291 IS - 27 KW - Glycoside Hydrolases KW - EC 3.2.1.- KW - alpha-glucuronidase KW - EC 3.2.1.139 KW - Index Medicus KW - enzyme catalysis KW - carbohydrate KW - enzyme domain composition KW - enzyme structure KW - crystal structure KW - protein domain KW - carbohydrate degradation KW - GH115 α-glucuronidase KW - catalytic apparatus KW - Models, Molecular KW - Marine Biology KW - Circular Dichroism KW - Amino Acid Sequence KW - Sequence Homology, Amino Acid KW - Protein Conformation KW - Glycoside Hydrolases -- chemistry KW - Glycoside Hydrolases -- metabolism KW - Gammaproteobacteria -- enzymology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1801425138?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+biological+chemistry&rft.atitle=Biochemical+and+Structural+Characterization+of+a+Five-domain+GH115+%CE%B1-Glucuronidase+from+the+Marine+Bacterium+Saccharophagus+degradans+2-40T.&rft.au=Wang%2C+Weijun%3BYan%2C+Ruoyu%3BNocek%2C+Boguslaw+P%3BVuong%2C+Thu+V%3BDi+Leo%2C+Rosa%3BXu%2C+Xiaohui%3BCui%2C+Hong%3BGatenholm%2C+Paul%3BToriz%2C+Guillermo%3BTenkanen%2C+Maija%3BSavchenko%2C+Alexei%3BMaster%2C+Emma+R&rft.aulast=Wang&rft.aufirst=Weijun&rft.date=2016-07-01&rft.volume=291&rft.issue=27&rft.spage=14120&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+biological+chemistry&rft.issn=1083-351X&rft_id=info:doi/10.1074%2Fjbc.M115.702944 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-12-22 N1 - Date created - 2016-07-02 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 2VUR; PDB; 1L4I; 4H04; 3BWU; 4ZMH; 1K9E N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1074/jbc.M115.702944 ER - TY - JOUR T1 - Mapping ephemeral stream networks in desert environments using very-high-spatial-resolution multispectral remote sensing AN - 1790969092; PQ0003115840 AB - Mapping of ephemeral streams in desert environments is crucial to understanding the impacts to hydrologic and ecosystem functions caused by land-use changes. Available mapping methods at the watershed-scale typically underestimate total channel length and the size of channel networks. Although remote sensing is effective for obtaining information on large areas, conventional techniques are often ineffective or cost-prohibitive for complex stream networks in expansive desert regions. Using very-high-spatial-resolution imagery, we developed a new algorithm to map desert ephemeral streams in the southwestern U.S., where utility-scale solar energy development is altering the landscape. Knowledge about landscape features such as shrubs and desert pavement and their spatial arrangement was integrated into the algorithm using spectral transformation and spatial statistical operations. The algorithm extracted ephemeral stream lengths approximately 900% greater than those identified in the National Hydrography Dataset. The accuracy in mapping channel areas and centerlines was as high as 92% and 91%, respectively. Although the algorithm captured detailed stream channels, it often underestimated channels obscured by bright soils and sparse vegetation. Although further improvement is warranted, the algorithm provides an effective means of obtaining detailed information about ephemeral streams, which could make a significant contribution toward improving the hydrological modeling of desert environments. JF - Journal of Arid Environments AU - Hamada, Yuki AU - O'Connor, Ben L AU - Orr, Andrew B AU - Wuthrich, Kelsey K AD - Environmental Science Division, Argonne National Laboratory, Argonne, IL 60439, USA Y1 - 2016/07// PY - 2016 DA - July 2016 SP - 40 EP - 48 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 130 SN - 0140-1963, 0140-1963 KW - Environment Abstracts; Ecology Abstracts KW - Ephemeral streams KW - Desert regions KW - Very high resolution KW - Transformation KW - Statistics KW - Arid environments KW - Remote sensing KW - Algorithms KW - Development KW - Streams KW - Soil KW - Hydrography KW - Mapping KW - Solar energy KW - Shrubs KW - Landscape KW - Vegetation KW - Land use KW - Deserts KW - Energy KW - ENA 03:Energy KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790969092?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Arid+Environments&rft.atitle=Mapping+ephemeral+stream+networks+in+desert+environments+using+very-high-spatial-resolution+multispectral+remote+sensing&rft.au=Hamada%2C+Yuki%3BO%27Connor%2C+Ben+L%3BOrr%2C+Andrew+B%3BWuthrich%2C+Kelsey+K&rft.aulast=Hamada&rft.aufirst=Yuki&rft.date=2016-07-01&rft.volume=130&rft.issue=&rft.spage=40&rft.isbn=&rft.btitle=&rft.title=Journal+of+Arid+Environments&rft.issn=01401963&rft_id=info:doi/10.1016%2Fj.jaridenv.2016.03.005 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Shrubs; Transformation; Statistics; Landscape; Arid environments; Algorithms; Remote sensing; Vegetation; Development; Streams; Soil; Deserts; Energy; Mapping; Hydrography; Solar energy; Land use DO - http://dx.doi.org/10.1016/j.jaridenv.2016.03.005 ER - TY - JOUR T1 - Assessment of Anisotropic Semiconductor Nanorod and Nanoplatelet Heterostructures with Polarized Emission for Liquid Crystal Display Technology. AN - 1800404121; 27203222 AB - Semiconductor nanorods can emit linear-polarized light at efficiencies over 80%. Polarization of light in these systems, confirmed through single-rod spectroscopy, can be explained on the basis of the anisotropy of the transition dipole moment and dielectric confinement effects. Here we report emission polarization in macroscopic semiconductor-polymer composite films containing CdSe/CdS nanorods and colloidal CdSe nanoplatelets. Anisotropic nanocrystals dispersed in polymer films of poly butyl-co-isobutyl methacrylate (PBiBMA) can be stretched mechanically in order to obtain unidirectionally aligned arrays. A high degree of alignment, corresponding to an orientation factor of 0.87, was achieved and large areas demonstrated polarized emission, with the contrast ratio I∥/I⊥ = 5.6, making these films viable candidates for use in liquid crystal display (LCD) devices. To some surprise, we observed significant optical anisotropy and emission polarization for 2D CdSe nanoplatelets with the electronic structure of quantum wells. The aligned nanorod arrays serve as optical funnels, absorbing unpolarized light and re-emitting light from deep-green to red with quantum efficiencies over 90% and high degree of linear polarization. Our results conclusively demonstrate the benefits of anisotropic nanostructures for LCD backlighting. The polymer films with aligned CdSe/CdS dot-in-rod and rod-in-rod nanostructures show more than 2-fold enhancement of brightness compared to the emitter layers with randomly oriented nanostructures. This effect can be explained as the combination of linearly polarized luminescence and directional emission from individual nanostructures. JF - ACS nano AU - Cunningham, Patrick D AU - Souza, João B AU - Fedin, Igor AU - She, Chunxing AU - Lee, Byeongdu AU - Talapin, Dmitri V AD - Department of Chemistry and James Franck Institute, University of Chicago , Chicago, Illinois 60637, United States. ; Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2016/06/28/ PY - 2016 DA - 2016 Jun 28 SP - 5769 EP - 5781 VL - 10 IS - 6 KW - Index Medicus KW - liquid crystal display KW - quantum dots KW - semiconductor nanocrystals KW - nanorods KW - nanoplatelets KW - polarized luminescence UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800404121?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+nano&rft.atitle=Assessment+of+Anisotropic+Semiconductor+Nanorod+and+Nanoplatelet+Heterostructures+with+Polarized+Emission+for+Liquid+Crystal+Display+Technology.&rft.au=Cunningham%2C+Patrick+D%3BSouza%2C+Jo%C3%A3o+B%3BFedin%2C+Igor%3BShe%2C+Chunxing%3BLee%2C+Byeongdu%3BTalapin%2C+Dmitri+V&rft.aulast=Cunningham&rft.aufirst=Patrick&rft.date=2016-06-28&rft.volume=10&rft.issue=6&rft.spage=5769&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Facsnano.5b07949 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-06-28 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsnano.5b07949 ER - TY - JOUR T1 - How Aromatic Compounds Block DNA Binding of HcaR Catabolite Regulator. AN - 1797870247; 27129205 AB - Bacterial catabolism of aromatic compounds from various sources including phenylpropanoids and flavonoids that are abundant in soil plays an important role in the recycling of carbon in the ecosystem. We have determined the crystal structures of apo-HcaR from Acinetobacter sp. ADP1, a MarR/SlyA transcription factor, in complexes with hydroxycinnamates and a specific DNA operator. The protein regulates the expression of the hca catabolic operon in Acinetobacter and related bacterial strains, allowing utilization of hydroxycinnamates as sole sources of carbon. HcaR binds multiple ligands, and as a result the transcription of genes encoding several catabolic enzymes is increased. The 1.9-2.4 Å resolution structures presented here explain how HcaR recognizes four ligands (ferulate, 3,4-dihydroxybenzoate, p-coumarate, and vanillin) using the same binding site. The ligand promiscuity appears to be an adaptation to match a broad specificity of hydroxycinnamate catabolic enzymes while responding to toxic thioester intermediates. Structures of apo-HcaR and in complex with a specific DNA hca operator when combined with binding studies of hydroxycinnamates show how aromatic ligands render HcaR unproductive in recognizing a specific DNA target. The current study contributes to a better understanding of the hca catabolic operon regulation mechanism by the transcription factor HcaR. JF - The Journal of biological chemistry AU - Kim, Youngchang AU - Joachimiak, Grazyna AU - Bigelow, Lance AU - Babnigg, Gyorgy AU - Joachimiak, Andrzej AD - From the Midwest Center for Structural Genomics and Structural Biology Center, Biosciences, Argonne National Laboratory, Argonne, Illinois 60439. ; From the Midwest Center for Structural Genomics and. ; From the Midwest Center for Structural Genomics and Structural Biology Center, Biosciences, Argonne National Laboratory, Argonne, Illinois 60439 andrzejj@anl.gov. Y1 - 2016/06/17/ PY - 2016 DA - 2016 Jun 17 SP - 13243 EP - 13256 VL - 291 IS - 25 KW - Bacterial Proteins KW - 0 KW - Coumaric Acids KW - DNA, Bacterial KW - Transcription Factors KW - ferulic acid KW - AVM951ZWST KW - Index Medicus KW - protein conformation KW - ligand-induced conformational change KW - DNA binding KW - NUDIX family KW - DNA-binding protein KW - ligand-binding protein KW - metabolic regulation KW - bacterial transcription KW - human gut bacteria KW - arabinose utilization KW - Gene Expression Regulation, Bacterial KW - Protein Structure, Secondary KW - Conserved Sequence KW - Models, Molecular KW - DNA, Bacterial -- chemistry KW - Protein Stability KW - Molecular Sequence Data KW - Crystallography, X-Ray KW - Amino Acid Sequence KW - Protein Structure, Tertiary KW - Protein Binding KW - Binding Sites KW - Acinetobacter KW - Bacterial Proteins -- chemistry KW - Transcription Factors -- chemistry KW - Coumaric Acids -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797870247?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+biological+chemistry&rft.atitle=How+Aromatic+Compounds+Block+DNA+Binding+of+HcaR+Catabolite+Regulator.&rft.au=Kim%2C+Youngchang%3BJoachimiak%2C+Grazyna%3BBigelow%2C+Lance%3BBabnigg%2C+Gyorgy%3BJoachimiak%2C+Andrzej&rft.aulast=Kim&rft.aufirst=Youngchang&rft.date=2016-06-17&rft.volume=291&rft.issue=25&rft.spage=13243&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+biological+chemistry&rft.issn=1083-351X&rft_id=info:doi/10.1074%2Fjbc.M115.712067 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-11-14 N1 - Date created - 2016-06-18 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 4AIK; PDB; 1Z9C; 3GFI; 3E6M; 4RGX; 3DEU; 4LLN; 3Q5F; 4RGR; 2GXA; 3ZPL; 4RGU; 1JGS; 2WTE; 4RGS; 4LLL; 4KDP; 4FX4; 4AIJ; 2YR2; 3GF2; 3K0L; 5BMZ; 3BPX N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1074/jbc.M115.712067 ER - TY - JOUR T1 - Biochemical and Structural Insights into Enzymatic Depolymerization of Polylactic Acid and Other Polyesters by Microbial Carboxylesterases. AN - 1796687496; 27087107 AB - Polylactic acid (PLA) is a biodegradable polyester derived from renewable resources, which is a leading candidate for the replacement of traditional petroleum-based polymers. Since the global production of PLA is quickly growing, there is an urgent need for the development of efficient recycling technologies, which will produce lactic acid instead of CO2 as the final product. After screening 90 purified microbial α/β-hydrolases, we identified hydrolytic activity against emulsified PLA in two uncharacterized proteins, ABO2449 from Alcanivorax borkumensis and RPA1511 from Rhodopseudomonas palustris. Both enzymes were also active against emulsified polycaprolactone and other polyesters as well as against soluble α-naphthyl and p-nitrophenyl monoesters. In addition, both ABO2449 and RPA1511 catalyzed complete or extensive hydrolysis of solid PLA with the production of lactic acid monomers, dimers, and larger oligomers as products. The crystal structure of RPA1511 was determined at 2.2 Å resolution and revealed a classical α/β-hydrolase fold with a wide-open active site containing a molecule of polyethylene glycol bound near the catalytic triad Ser114-His270-Asp242. Site-directed mutagenesis of both proteins demonstrated that the catalytic triad residues are important for the hydrolysis of both monoester and polyester substrates. We also identified several residues in RPA1511 (Gln172, Leu212, Met215, Trp218, and Leu220) and ABO2449 (Phe38 and Leu152), which were not essential for activity against soluble monoesters but were found to be critical for the hydrolysis of PLA. Our results indicate that microbial carboxyl esterases can efficiently hydrolyze various polyesters making them attractive biocatalysts for plastics depolymerization and recycling. JF - Biomacromolecules AU - Hajighasemi, Mahbod AU - Nocek, Boguslaw P AU - Tchigvintsev, Anatoli AU - Brown, Greg AU - Flick, Robert AU - Xu, Xiaohui AU - Cui, Hong AU - Hai, Tran AU - Joachimiak, Andrzej AU - Golyshin, Peter N AU - Savchenko, Alexei AU - Edwards, Elizabeth A AU - Yakunin, Alexander F AD - Department of Chemical Engineering and Applied Chemistry, University of Toronto , Toronto, Ontario M5S 3E5, Canada. ; The Bioscience Division, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; School of Biological Sciences, University of Bangor , Gwynedd LL57 2UW, U.K. Y1 - 2016/06/13/ PY - 2016 DA - 2016 Jun 13 SP - 2027 EP - 2039 VL - 17 IS - 6 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1796687496?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biomacromolecules&rft.atitle=Biochemical+and+Structural+Insights+into+Enzymatic+Depolymerization+of+Polylactic+Acid+and+Other+Polyesters+by+Microbial+Carboxylesterases.&rft.au=Hajighasemi%2C+Mahbod%3BNocek%2C+Boguslaw+P%3BTchigvintsev%2C+Anatoli%3BBrown%2C+Greg%3BFlick%2C+Robert%3BXu%2C+Xiaohui%3BCui%2C+Hong%3BHai%2C+Tran%3BJoachimiak%2C+Andrzej%3BGolyshin%2C+Peter+N%3BSavchenko%2C+Alexei%3BEdwards%2C+Elizabeth+A%3BYakunin%2C+Alexander+F&rft.aulast=Hajighasemi&rft.aufirst=Mahbod&rft.date=2016-06-13&rft.volume=17&rft.issue=6&rft.spage=2027&rft.isbn=&rft.btitle=&rft.title=Biomacromolecules&rft.issn=1526-4602&rft_id=info:doi/10.1021%2Facs.biomac.6b00223 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-06-13 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.biomac.6b00223 ER - TY - JOUR T1 - Freestanding three-dimensional core-shell nanoarrays for lithium-ion battery anodes. AN - 1793903753; 27256920 AB - Structural degradation and low conductivity of transition-metal oxides lead to severe capacity fading in lithium-ion batteries. Recent efforts to solve this issue have mainly focused on using nanocomposites or hybrids by integrating nanosized metal oxides with conducting additives. Here we design specific hierarchical structures and demonstrate their use in flexible, large-area anode assemblies. Fabrication of these anodes is achieved via oxidative growth of copper oxide nanowires onto copper substrates followed by radio-frequency sputtering of carbon-nitride films, forming freestanding three-dimensional arrays with core-shell nano-architecture. Cable-like copper oxide/carbon-nitride core-shell nanostructures accommodate the volume change during lithiation-delithiation processes, the three-dimensional arrays provide abundant electroactive zones and electron/ion transport paths, and the monolithic sandwich-type configuration without additional binders or conductive agents improves energy/power densities of the whole electrode. JF - Nature communications AU - Tan, Guoqiang AU - Wu, Feng AU - Yuan, Yifei AU - Chen, Renjie AU - Zhao, Teng AU - Yao, Ying AU - Qian, Ji AU - Liu, Jianrui AU - Ye, Yusheng AU - Shahbazian-Yassar, Reza AU - Lu, Jun AU - Amine, Khalil AD - School of Materials Science and Engineering, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering, Beijing 100081, China. ; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700S. Cass Avenue, Lemont, Illinois 60439, USA. ; Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA. Y1 - 2016/06/03/ PY - 2016 DA - 2016 Jun 03 SP - 11774 VL - 7 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793903753?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+communications&rft.atitle=Freestanding+three-dimensional+core-shell+nanoarrays+for+lithium-ion+battery+anodes.&rft.au=Tan%2C+Guoqiang%3BWu%2C+Feng%3BYuan%2C+Yifei%3BChen%2C+Renjie%3BZhao%2C+Teng%3BYao%2C+Ying%3BQian%2C+Ji%3BLiu%2C+Jianrui%3BYe%2C+Yusheng%3BShahbazian-Yassar%2C+Reza%3BLu%2C+Jun%3BAmine%2C+Khalil&rft.aulast=Tan&rft.aufirst=Guoqiang&rft.date=2016-06-03&rft.volume=7&rft.issue=&rft.spage=11774&rft.isbn=&rft.btitle=&rft.title=Nature+communications&rft.issn=2041-1723&rft_id=info:doi/10.1038%2Fncomms11774 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-06-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/ncomms11774 ER - TY - JOUR T1 - High-pressure behavior of the polymorphs of FeOOH AN - 1819895259; 2016-079209 AB - The high-pressure structural and electronic behavior of alpha -, beta -, and gamma -FeOOH were studied in situ using a combination of synchrotron X-ray diffraction (XRD) and X-ray emission spectroscopy (XES). We monitored alpha -FeOOH by XES as a function of pressure up to 85 GPa and observed an electronic spin transition that began at approximately 50 GPa, which is consistent with previous results. In the gamma -FeOOH sample, we see the initiation of a spin transition at 35 GPa that remains incomplete up to 65 GPa. beta -FeOOH does not show any indication of a spin transition up to 65 GPa. Analysis of the high-pressure XRD data shows that neither beta -FeOOH nor gamma -FeOOH transform to new crystal structures, and both amorphize above 20 GPa. Comparing our EOS results for the beta and gamma phases with recently published data on the alpha and epsilon phases, we found that beta -FeOOH exhibits distinct behavior from the other three polymorphs, as it is significantly less compressible and does not undergo a spin transition. A systematic examination of these iron hydroxide polymorphs as a function of pressure can provide insight into the relationship between electronic spin transitions and structural transitions in these OH- and Fe (super 3+) -bearing phases that may have implications on our understanding of the water content and oxidation state of the mantle. JF - American Mineralogist AU - Reagan, Mary M AU - Gleason, Arianna E AU - Daemen, Luke AU - Xiao, Yuming AU - Mao, Wendy L Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 1483 EP - 1488 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 6 SN - 0003-004X, 0003-004X KW - water KW - pressure KW - X-ray diffraction data KW - mantle KW - phase transitions KW - crystal structure KW - high pressure KW - X-ray spectra KW - iron hydroxides KW - iron KW - hydroxides KW - hydroxyl ion KW - ferric iron KW - polymorphism KW - metals KW - oxides KW - spectra KW - electronic spin transitions KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819895259?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=High-pressure+behavior+of+the+polymorphs+of+FeOOH&rft.au=Reagan%2C+Mary+M%3BGleason%2C+Arianna+E%3BDaemen%2C+Luke%3BXiao%2C+Yuming%3BMao%2C+Wendy+L&rft.aulast=Reagan&rft.aufirst=Mary&rft.date=2016-06-01&rft.volume=101&rft.issue=6&rft.spage=1483&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5449 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 31 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-09-16 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - crystal structure; electronic spin transitions; ferric iron; high pressure; hydroxides; hydroxyl ion; iron; iron hydroxides; mantle; metals; oxides; phase transitions; polymorphism; pressure; spectra; water; X-ray diffraction data; X-ray spectra DO - http://dx.doi.org/10.2138/am-2016-5449 ER - TY - JOUR T1 - Spatial scale drives patterns in soil bacterial diversity AN - 1808655329; PQ0003391217 AB - Soil microbial communities are essential for ecosystem function, but linking community composition to biogeochemical processes is challenging because of high microbial diversity and large spatial variability of most soil characteristics. We investigated soil bacterial community structure in a switchgrass stand planted on soil with a history of grassland vegetation at high spatial resolution to determine whether biogeographic trends occurred at the centimeter scale. Moreover, we tested whether such heterogeneity, if present, influenced community structure within or among ecosystems. Pronounced heterogeneity was observed at centimeter scales, with abrupt changes in relative abundance of phyla from sample to sample. At the ecosystem scale (> 10 m), however, bacterial community composition and structure were subtly, but significantly, altered by fertilization, with higher alpha diversity in fertilized plots. Moreover, by comparing these data with data from 1772 soils from the Earth Microbiome Project, it was found that 20% of bacterial taxa were shared between their site and diverse globally sourced soil samples, while grassland soils shared approximately 40% of their operational taxonomic units with the current study. By spanning several orders of magnitude, the analysis suggested that extreme patchiness characterized community structure at smaller scales but that coherent patterns emerged at larger length scales. JF - Environmental Microbiology AU - O'Brien, Sarah L AU - Gibbons, Sean M AU - Owens, Sarah M AU - Hampton-Marcell, Jarrad AU - Johnston, Eric R AU - Jastrow, Julie D AU - Gilbert, Jack A AU - Meyer, Folker AU - Antonopoulos, Dionysios A AD - Biosciences Division, Argonne National Laboratory, 9700 S. Cass Ave, Argonne, IL, 60439, USA. Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 2039 EP - 2051 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 18 IS - 6 SN - 1462-2912, 1462-2912 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Environment Abstracts; Microbiology Abstracts B: Bacteriology KW - Historical account KW - Spatial distribution KW - Soil characteristics KW - Abundance KW - Relative abundance KW - spatial discrimination KW - Soil microorganisms KW - Soil KW - Fertilizers KW - Fertilization KW - Taxa KW - Bacteria KW - Data processing KW - Biogeochemistry KW - Vegetation KW - Microbial activity KW - Grasslands KW - Community composition KW - Community structure KW - Plant communities KW - Taxonomy KW - J 02310:Genetics & Taxonomy KW - ENA 15:Renewable Resources-Terrestrial KW - A 01400:Soil Microbes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1808655329?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Microbiology&rft.atitle=Spatial+scale+drives+patterns+in+soil+bacterial+diversity&rft.au=O%27Brien%2C+Sarah+L%3BGibbons%2C+Sean+M%3BOwens%2C+Sarah+M%3BHampton-Marcell%2C+Jarrad%3BJohnston%2C+Eric+R%3BJastrow%2C+Julie+D%3BGilbert%2C+Jack+A%3BMeyer%2C+Folker%3BAntonopoulos%2C+Dionysios+A&rft.aulast=O%27Brien&rft.aufirst=Sarah&rft.date=2016-06-01&rft.volume=18&rft.issue=6&rft.spage=2039&rft.isbn=&rft.btitle=&rft.title=Environmental+Microbiology&rft.issn=14622912&rft_id=info:doi/10.1111%2F1462-2920.13231 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - Grasslands; Fertilization; Community composition; Data processing; Community structure; Abundance; Soil characteristics; Plant communities; Vegetation; spatial discrimination; Soil microorganisms; Historical account; Spatial distribution; Biogeochemistry; Microbial activity; Relative abundance; Soil; Fertilizers; Taxa; Taxonomy; Bacteria DO - http://dx.doi.org/10.1111/1462-2920.13231 ER - TY - JOUR T1 - The emerging threat of superwarfarins: history, detection, mechanisms, and countermeasures. AN - 1803794179; 27244102 AB - Superwarfarins were developed following the emergence of warfarin resistance in rodents. Compared to warfarin, superwarfarins have much longer half-lives and stronger affinity to vitamin K epoxide reductase and therefore can cause death in warfarin-resistant rodents. By the mid-1970s, the superwarfarins brodifacoum and difenacoum were the most widely used rodenticides throughout the world. Unfortunately, increased use was accompanied by a rise in accidental poisonings, reaching >16,000 per year in the United States. Risk of exposure has become a concern since large quantities, up to hundreds of kilograms of rodent bait, are applied by aerial dispersion over regions with rodent infestations. Reports of intentional use of superwarfarins in civilian and military scenarios raise the specter of larger incidents or mass casualties. Unlike warfarin overdose, for which 1-2 days of treatment with vitamin K is effective, treatment of superwarfarin poisoning with vitamin K is limited by extremely high cost and can require daily treatment for a year or longer. Furthermore, superwarfarins have actions that are independent of their anticoagulant effects, including both vitamin K-dependent and -independent effects, which are not mitigated by vitamin K therapy. In this review, we summarize superwarfarin development, biology and pathophysiology, their threat as weapons, and possible therapeutic approaches. JF - Annals of the New York Academy of Sciences AU - Feinstein, Douglas L AU - Akpa, Belinda S AU - Ayee, Manuela A AU - Boullerne, Anne I AU - Braun, David AU - Brodsky, Sergey V AU - Gidalevitz, David AU - Hauck, Zane AU - Kalinin, Sergey AU - Kowal, Kathy AU - Kuzmenko, Ivan AU - Lis, Kinga AU - Marangoni, Natalia AU - Martynowycz, Michael W AU - Rubinstein, Israel AU - van Breemen, Richard AU - Ware, Kyle AU - Weinberg, Guy AD - Department of Anesthesiology, University of Illinois, Chicago, Illinois. ; Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, North Carolina. ; Department of Medicine, University of Illinois, Chicago, Illinois. ; Department of Pathology, the Ohio State University, Columbus, Ohio. ; Department of Physics and the Center for the Molecular Study of Condensed Soft Matter, Illinois Institute of Technology, Chicago, Illinois. ; Department of Medicinal Chemistry and Pharmacognosy, University of Illinois, Chicago, Illinois. ; X-ray Science Division, Argonne National Laboratory, Lemont, Illinois. Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 111 EP - 122 VL - 1374 IS - 1 KW - Index Medicus KW - nephrotoxicity KW - HPLC KW - brodifacoum KW - neuropathology KW - intralipid KW - superwarfarins KW - lipid membrane UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1803794179?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annals+of+the+New+York+Academy+of+Sciences&rft.atitle=The+emerging+threat+of+superwarfarins%3A+history%2C+detection%2C+mechanisms%2C+and+countermeasures.&rft.au=Feinstein%2C+Douglas+L%3BAkpa%2C+Belinda+S%3BAyee%2C+Manuela+A%3BBoullerne%2C+Anne+I%3BBraun%2C+David%3BBrodsky%2C+Sergey+V%3BGidalevitz%2C+David%3BHauck%2C+Zane%3BKalinin%2C+Sergey%3BKowal%2C+Kathy%3BKuzmenko%2C+Ivan%3BLis%2C+Kinga%3BMarangoni%2C+Natalia%3BMartynowycz%2C+Michael+W%3BRubinstein%2C+Israel%3Bvan+Breemen%2C+Richard%3BWare%2C+Kyle%3BWeinberg%2C+Guy&rft.aulast=Feinstein&rft.aufirst=Douglas&rft.date=2016-06-01&rft.volume=1374&rft.issue=1&rft.spage=111&rft.isbn=&rft.btitle=&rft.title=Annals+of+the+New+York+Academy+of+Sciences&rft.issn=1749-6632&rft_id=info:doi/10.1111%2Fnyas.13085 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-07-12 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1111/nyas.13085 ER - TY - GEN T1 - Crystal structures of the transpeptidase domain of the Mycobacterium tuberculosis penicillin-binding protein PonA1 reveal potential mechanisms of antibiotic resistance. AN - 1798723599; 27101811 AB - UNLABELLEDMycobacterium tuberculosis is a human respiratory pathogen that causes the deadly disease tuberculosis. The rapid global spread of antibiotic-resistant M. tuberculosis makes tuberculosis infections difficult to treat. To overcome this problem new effective antimicrobial strategies are urgently needed. One promising target for new therapeutic approaches is PonA1, a class A penicillin-binding protein, which is required for maintaining physiological cell wall synthesis and cell shape during growth in mycobacteria. Here, crystal structures of the transpeptidase domain, the enzymatic domain responsible for penicillin binding, of PonA1 from M. tuberculosis in the inhibitor-free form and in complex with penicillin V are reported. We used site-directed mutagenesis, antibiotic profiling experiments, and fluorescence thermal shift assays to measure PonA1's sensitivity to different classes of β-lactams. Structural comparison of the PonA1 apo-form and the antibiotic-bound form shows that binding of penicillin V induces conformational changes in the position of the loop β4'-α3 surrounding the penicillin-binding site. We have also found that binding of different antibiotics including penicillin V positively impacts protein stability, while other tested β-lactams such as clavulanate or meropenem resulted in destabilization of PonA1. Our antibiotic profiling experiments indicate that the transpeptidase activity of PonA1 in both M. tuberculosis and M. smegmatis mediates tolerance to specific cell wall-targeting antibiotics, particularly to penicillin V and meropenem. Because M. tuberculosis is an important human pathogen, these structural data provide a template to design novel transpeptidase inhibitors to treat tuberculosis infections.DATABASEStructural data are available in the PDB database under the accession numbers 5CRF and 5CXW. JF - The FEBS journal AU - Filippova, Ekaterina V AU - Kieser, Karen J AU - Luan, Chi-Hao AU - Wawrzak, Zdzislaw AU - Kiryukhina, Olga AU - Rubin, Eric J AU - Anderson, Wayne F Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 2206 EP - 2218 VL - 283 IS - 12 KW - Index Medicus KW - tuberculosis KW - transpeptidase domain KW - antibiotic resistance KW - β-lactams KW - PBP KW - PonA1 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1798723599?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=The+FEBS+journal&rft.atitle=Crystal+structures+of+the+transpeptidase+domain+of+the+Mycobacterium+tuberculosis+penicillin-binding+protein+PonA1+reveal+potential+mechanisms+of+antibiotic+resistance.&rft.au=Filippova%2C+Ekaterina+V%3BKieser%2C+Karen+J%3BLuan%2C+Chi-Hao%3BWawrzak%2C+Zdzislaw%3BKiryukhina%2C+Olga%3BRubin%2C+Eric+J%3BAnderson%2C+Wayne+F&rft.aulast=Filippova&rft.aufirst=Ekaterina&rft.date=2016-06-01&rft.volume=283&rft.issue=12&rft.spage=2206&rft.isbn=&rft.btitle=&rft.title=The+FEBS+journal&rft.issn=1742-4658&rft_id=info:doi/10.1111%2Ffebs.13738 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-06-20 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1111/febs.13738 ER - TY - JOUR T1 - Wet-laid soy fiber reinforced hydrogel scaffold: Fabrication, mechano-morphological and cell studies. AN - 1778706192; 27040224 AB - Among materials used in biomedical applications, hydrogels have received consistent linear growth in interest over the past decade due to their large water volume and saliency to the natural extracellular matrix. These materials are often limited due to their sub-optimal mechanical properties which are typically improved via chemical or physical crosslinking. Chemical crosslinking forms strong inter-polymer bonds but typically uses reagents that are cytotoxic while physical crosslinking is more temperamental to environmental changes but can be formed without these toxic reagents. In this study, we added a fiber-reinforcement phase to a poly(vinyl alcohol) (PVA) hydrogel formed through successive freezing-thawing cycles by incorporating a non-woven microfiber mat formed by the wet-lay process. By reinforcing the hydrogel with a wet-laid fibrous mat, the ultimate tensile strength and modulus increased from 0.11 ± 0.01 MPa and 0.17 ± 0.02 kPa to 0.24 ± 0.02 MPa and 5.76 ± 1.12 kPa, respectively. An increase in toughness and elongation was also found increasing from 2.52 ± 0.37 MPa to 25.6 ± 3.84 and 51.89 ± 5.16% to 111.16 ± 9.68%, respectively. The soy fibers were also found to induce minimal cytotoxicity with endothelial cell viability showing 96.51% ± 1.91 living cells after a 48 h incubation. This approach to hydrogel-reinforcement presents a rapid, tunable method by which hydrogels can attain increased mechanical properties without sacrificing their inherent biologically favorable properties. JF - Materials science & engineering. C, Materials for biological applications AU - Wood, Andrew T AU - Everett, Dominique AU - Budhwani, Karim I AU - Dickinson, Brenna AU - Thomas, Vinoy AD - Department of Materials Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue South, Birmingham, AL 35233, United States. Electronic address: ATWood@uab.edu. ; Department of Materials Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue South, Birmingham, AL 35233, United States. Electronic address: DEveret9@uab.edu. ; Department of Materials Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue South, Birmingham, AL 35233, United States; Department of Biomedical Engineering, University of Alabama at Birmingham, 1075 13th Street South Suite 101 Birmingham, AL 35294, United States; Department of Radiation Oncology, University of Alabama at Birmingham, 1700 6th Avenue South Birmingham, AL 35233, United States. Electronic address: Ironman@uab.edu. ; Department of Materials Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue South, Birmingham, AL 35233, United States. Electronic address: Brenna94@uab.edu. ; Department of Materials Science and Engineering, University of Alabama at Birmingham, 1150 10th Avenue South, Birmingham, AL 35233, United States; Center for Nanoscale Materials and Biointegration (CNMB), University of Alabama at Birmingham, 1300 University Blvd. CH 386 Birmingham, AL 35294, United States. Electronic address: VThomas@uab.edu. Y1 - 2016/06// PY - 2016 DA - June 2016 SP - 308 EP - 316 VL - 63 KW - Hydrogels KW - 0 KW - Polyvinyl Alcohol KW - 9002-89-5 KW - Index Medicus KW - Poly(vinyl alcohol) KW - Regenerative medicine KW - Tissue engineering KW - Wet-laid process KW - Natural fiber KW - Mechanical properties KW - Elastic Modulus KW - Spectroscopy, Fourier Transform Infrared KW - Animals KW - Polyvinyl Alcohol -- chemistry KW - Cell Survival -- drug effects KW - Tensile Strength KW - Mice KW - Calorimetry, Differential Scanning KW - Cell Line KW - Microscopy, Electron, Scanning KW - Hydrogels -- toxicity KW - Hydrogels -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1778706192?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Materials+science+%26+engineering.+C%2C+Materials+for+biological+applications&rft.atitle=Wet-laid+soy+fiber+reinforced+hydrogel+scaffold%3A+Fabrication%2C+mechano-morphological+and+cell+studies.&rft.au=Wood%2C+Andrew+T%3BEverett%2C+Dominique%3BBudhwani%2C+Karim+I%3BDickinson%2C+Brenna%3BThomas%2C+Vinoy&rft.aulast=Wood&rft.aufirst=Andrew&rft.date=2016-06-01&rft.volume=63&rft.issue=&rft.spage=308&rft.isbn=&rft.btitle=&rft.title=Materials+science+%26+engineering.+C%2C+Materials+for+biological+applications&rft.issn=1873-0191&rft_id=info:doi/10.1016%2Fj.msec.2016.02.078 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-12-28 N1 - Date created - 2016-04-04 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.msec.2016.02.078 ER - TY - JOUR T1 - Tackling CO Poisoning with Single-Atom Alloy Catalysts. AN - 1791718126; 27167705 AB - Platinum catalysts are extensively used in the chemical industry and as electrocatalysts in fuel cells. Pt is notorious for its sensitivity to poisoning by strong CO adsorption. Here we demonstrate that the single-atom alloy (SAA) strategy applied to Pt reduces the binding strength of CO while maintaining catalytic performance. By using surface sensitive studies, we determined the binding strength of CO to different Pt ensembles, and this in turn guided the preparation of PtCu alloy nanoparticles (NPs). The atomic ratio Pt:Cu = 1:125 yielded a SAA which exhibited excellent CO tolerance in H2 activation, the key elementary step for hydrogenation and hydrogen electro-oxidation. As a probe reaction, the selective hydrogenation of acetylene to ethene was performed under flow conditions on the SAA NPs supported on alumina without activity loss in the presence of CO. The ability to maintain reactivity in the presence of CO is vital to other industrial reaction systems, such as hydrocarbon oxidation, electrochemical methanol oxidation, and hydrogen fuel cells. JF - Journal of the American Chemical Society AU - Liu, Jilei AU - Lucci, Felicia R AU - Yang, Ming AU - Lee, Sungsik AU - Marcinkowski, Matthew D AU - Therrien, Andrew J AU - Williams, Christopher T AU - Sykes, E Charles H AU - Flytzani-Stephanopoulos, Maria AD - Department of Chemical and Biological Engineering, Tufts University , 4 Colby Street, Medford, Massachusetts 02155, United States. ; Department of Chemistry, Tufts University , 62 Talbot Avenue, Medford, Massachusetts 02155, United States. ; X-ray Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; Department of Chemical Engineering, University of South Carolina , 301 Main Street, Columbia, South Carolina 29208, United States. Y1 - 2016/05/25/ PY - 2016 DA - 2016 May 25 SP - 6396 EP - 6399 VL - 138 IS - 20 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1791718126?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=Tackling+CO+Poisoning+with+Single-Atom+Alloy+Catalysts.&rft.au=Liu%2C+Jilei%3BLucci%2C+Felicia+R%3BYang%2C+Ming%3BLee%2C+Sungsik%3BMarcinkowski%2C+Matthew+D%3BTherrien%2C+Andrew+J%3BWilliams%2C+Christopher+T%3BSykes%2C+E+Charles+H%3BFlytzani-Stephanopoulos%2C+Maria&rft.aulast=Liu&rft.aufirst=Jilei&rft.date=2016-05-25&rft.volume=138&rft.issue=20&rft.spage=6396&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Chemical+Society&rft.issn=1520-5126&rft_id=info:doi/10.1021%2Fjacs.6b03339 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-05-25 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/jacs.6b03339 ER - TY - JOUR T1 - Fibronectin EDA and CpG synergize to enhance antigen-specific Th1 and cytotoxic responses. AN - 1784751017; 27016652 AB - Subunit vaccines, employing purified protein antigens rather than intact pathogens, require the addition of adjuvants for enhanced immunogenicity with a correct balance between strong activation of the immune system and low toxicity. Here we show that the endogenous (i.e., autologous) non-toxic TLR4 agonist extra domain A type III repeat of fibronectin (FNIII EDA) can synergize with the exogenous (i.e., bacterial), toxic-at-high-dose, TLR9 agonist CpG to induce efficient cellular immune responses while keeping the dose of CpG low. The efficacy of the combined TLR agonists, even at half-doses, led to stronger dendritic cell activation, enhanced cytotoxic T lymphocyte activation as well as stronger humoral response, compared to the individual agonists given at full doses. Immune cells induced after vaccination with the co-adjuvanted formulation could mediate tumor regression in an E.G7-OVA tumor model, and eradicate circulating hepatitis B virus (HBV) in a transgenic HBV model. Together, these results show that endogenous TLR agonists, such as variants of FNIII EDA, can synergize with exogenous TLR ligands, such as CpG, and strongly enhance cellular immune responses, while improving their safety profile. JF - Vaccine AU - Julier, Ziad AU - de Titta, Alexandre AU - Grimm, Alizée J AU - Simeoni, Eleonora AU - Swartz, Melody A AU - Hubbell, Jeffrey A AD - Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland. ; Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Institute for Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Institute for Molecular Engineering, University of Chicago, Chicago, IL 60637, USA. ; Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Institute for Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Institute for Molecular Engineering, University of Chicago, Chicago, IL 60637, USA. Electronic address: jhubbell@uchicago.edu. Y1 - 2016/05/05/ PY - 2016 DA - 2016 May 05 SP - 2453 EP - 2459 VL - 34 IS - 21 KW - Index Medicus KW - Pattern recognition receptors KW - Adjuvant KW - Cancer vaccine KW - Hepatitis B virus KW - Adaptive immunity KW - FNIII EDA KW - CpG KW - Toll-like receptors UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784751017?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Vaccine&rft.atitle=Fibronectin+EDA+and+CpG+synergize+to+enhance+antigen-specific+Th1+and+cytotoxic+responses.&rft.au=Julier%2C+Ziad%3Bde+Titta%2C+Alexandre%3BGrimm%2C+Aliz%C3%A9e+J%3BSimeoni%2C+Eleonora%3BSwartz%2C+Melody+A%3BHubbell%2C+Jeffrey+A&rft.aulast=Julier&rft.aufirst=Ziad&rft.date=2016-05-05&rft.volume=34&rft.issue=21&rft.spage=2453&rft.isbn=&rft.btitle=&rft.title=Vaccine&rft.issn=1873-2518&rft_id=info:doi/10.1016%2Fj.vaccine.2016.03.057 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-04-26 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Mediators Inflamm. 2015;2015:329405 [25810567] Sci Rep. 2015;5:8569 [25708982] J Immunol Methods. 1999 Feb 1;223(1):77-92 [10037236] J Virol. 1995 Oct;69(10):6158-69 [7666518] J Biol Chem. 2001 Mar 30;276(13):10229-33 [11150311] Nat Immunol. 2005 Aug;6(8):769-76 [15995707] J Immunol. 2007 Jan 15;178(2):748-56 [17202335] J Immunol. 2007 Jan 15;178(2):1164-71 [17202381] Proc Natl Acad Sci U S A. 2008 Oct 21;105(42):16260-5 [18845682] Nat Mater. 2009 Feb;8(2):151-8 [19136947] Curr Pharm Des. 2009;15(11):1159-71 [19355957] Mol Pharm. 2009 Jul-Aug;6(4):1160-9 [19415922] J Hepatol. 2009 Sep;51(3):520-7 [19596480] J Clin Invest. 2010 Feb;120(2):607-16 [20101095] Expert Rev Vaccines. 2011 Apr;10(4):499-511 [21506647] Curr Opin Pharmacol. 2011 Aug;11(4):404-11 [21501972] Nucleic Acid Ther. 2012 Apr;22(2):77-89 [22352814] Vaccine. 2013 Feb 6;31(8):1197-203 [23306359] Integr Biol (Camb). 2013 Apr;5(4):650-8 [23443913] Proc Natl Acad Sci U S A. 2013 Dec 3;110(49):19902-7 [24248387] Cancer Immunol Res. 2014 May;2(5):436-47 [24795356] Med Microbiol Immunol. 2015 Feb;204(1):95-102 [25523197] Sci Rep. 2015;5:14274 [26387548] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.vaccine.2016.03.057 ER - TY - JOUR T1 - Assessing and improving land surface model outputs over Africa using GRACE, field, and remote sensing data AN - 1832616978; 776393-1 AB - The Gravity Recovery and Climate Experiment (GRACE), along with other relevant field and remote sensing datasets, was used to assess the performance of two land surface models (LSMs: CLM4.5-SP and GLDAS-Noah) over the African continent and improve the outputs of the CLM4.5-SP model. Spatial and temporal analysis of monthly (January 2003-December 2010) Terrestrial Water Storage (TWS) estimates extracted from GRACE (TWS (sub GRACE) ), CLM4.5-SP (TWS (sub CLM4.5) ), and GLDAS-Noah (TWS (sub GLDAS) ) indicates the following: (1) compared to GRACE, LSMs overestimate TWS in winter months and underestimate them in summer months; (2) the amplitude of annual cycle (AAC) of TWS (sub GRACE) is higher than that of TWS (sub LSM) (AAC: TWS (sub GRACE) > TWS (sub GLDAS) > TWS (sub CLM4.5) ); (3) higher, and statistically significant correlations were observed between TWS (sub GRACE) and TWS (sub GLDAS) compared to those between TWS (sub GRACE) and TWS (sub CLM4.5) ; (4) differences in forcing precipitation and temperature datasets for GLDAS-Noah and CLM4.5-SP models are unlikely to be the main cause for the observed discrepancies between TWS (sub GRACE) and TWS (sub LSM) ; and (5) the CLM4.5-SP model overestimates evapotranspiration (ET) values in summer months and underestimates them in winter months compared to ET estimates extracted from field-based (FLUXNET-MTE) and satellite-based (MOD16 and GLEAM) ET measurements. A first-order correction was developed and applied to correct the CLM4.5-derived ET, soil moisture, groundwater, and TWS. The corrections improved the correspondence (i.e., higher correlation and comparable AAC) between TWS (sub CLM4.5) and TWS (sub GRACE) over various climatic settings. Our findings suggest that similar straightforward correction approaches could potentially be developed and used to assess and improve the performance of a wide range of LSMs. Copyright 2016 Springer Science+Business Media Dordrecht JF - Surveys in Geophysics AU - Ahmed, Mohamed AU - Sultan, Mohamed AU - Yan, Eugene AU - Wahr, John Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 529 EP - 556 PB - Springer, Dordrecht VL - 37 IS - 3 SN - 0169-3298, 0169-3298 KW - hydrology KW - water storage KW - spatial variations KW - GRACE KW - Africa KW - temporal distribution KW - satellite methods KW - land surface model KW - evapotranspiration KW - remote sensing KW - field studies KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832616978?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Surveys+in+Geophysics&rft.atitle=Assessing+and+improving+land+surface+model+outputs+over+Africa+using+GRACE%2C+field%2C+and+remote+sensing+data&rft.au=Ahmed%2C+Mohamed%3BSultan%2C+Mohamed%3BYan%2C+Eugene%3BWahr%2C+John&rft.aulast=Ahmed&rft.aufirst=Mohamed&rft.date=2016-05-01&rft.volume=37&rft.issue=3&rft.spage=529&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-016-9360-8 L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Number of references - 86 N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - Africa; evapotranspiration; field studies; GRACE; hydrology; land surface model; remote sensing; satellite methods; spatial variations; temporal distribution; water storage DO - http://dx.doi.org/10.1007/s10712-016-9360-8 ER - TY - JOUR T1 - Equation of state and spin crossover of (Mg,Fe)O at high pressure, with implications for explaining topographic relief at the core-mantle boundary AN - 1812215249; 2016-070885 AB - Iron-bearing periclase is thought to represent a significant fraction of Earth's lower mantle. However, the concentration of iron in (Mg,Fe)O is not well constrained at all mantle depths. Therefore, understanding the effect of iron on the density and elastic properties of this phase plays a major role in interpreting seismically observed complexity in the deep Earth. Here we examine the high-pressure behavior of polycrystalline (Mg,Fe)O containing 48 mol% FeO, loaded hydrostatically with neon as a pressure medium. Using X-ray diffraction and synchrotron Mossbauer spectroscopy, we measure the equation of state to about 83 GPa and hyperfine parameters to 107 GPa at 300 K. A gradual volume drop corresponding to a high-spin (HS) to low-spin (LS) crossover is observed between approximately 45 and 83 GPa with a volume drop of 1.85% at 68.8(2.7) GPa, the calculated spin transition pressure. Using a newly formulated spin crossover equation of state, the resulting zero-pressure isothermal bulk modulus K (sub 0T,HS) for the HS state is 160(2) GPa with a K' (sub 0T,HS) of 4.12(14) and a V (sub 0,HS) of 77.29(0) A (super 3) . For the LS state, the K (sub 0T,LS) is 173(13) GPa with a K' (sub 0T,LS) fixed to 4 and a V (sub 0,LS) of 73.64(94) A (super 3) To confirm that the observed volume drop is due to a spin crossover, the quadrupole splitting (QS) and isomer shift (IS) are determined as a function of pressure. At low pressures, the Mossbauer spectra are well explained with two Fe (super 2+) -like sites. At pressure between 44 and 84, two additional Fe (super 2+) -like sites with a QS of 0 are required, indicative of low-spin iron. Above 84 GPa, two low-spin Fe (super 2+) -like sites with increasing weight fraction explain the data well, signifying the completion of the spin crossover. To systematically compare the effect of iron on the equation of state parameters for (Mg,Fe)O, a spin crossover equation of state was fitted to the pressure-volume data of previous measurements. Our results show that K (sub 0,HS) is insensitive to iron concentration between 10 to 60 mol% FeO, while the spin transition pressure and width generally increases from about 50-80 and 2-25 GPa, respectively. A key implication is that iron-rich (Mg,Fe)O at the core-mantle boundary would likely contain a significant fraction of high-spin (less dense) iron, contributing a positive buoyancy to promote observable topographic relief in tomographic images of the lowermost mantle. JF - American Mineralogist AU - Solomatova, Natalia V AU - Jackson, Jennifer M AU - Sturhahn, Wolfgang AU - Wicks, June K AU - Zhao, Jiyong AU - Toellner, Thomas S AU - Kalkan, Bora AU - Steinhardt, William M Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 1084 EP - 1093 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 5 SN - 0003-004X, 0003-004X KW - interior KW - experimental studies KW - pressure KW - X-ray diffraction data KW - mantle KW - high pressure KW - core-mantle boundary KW - synchrotron radiation KW - outer core KW - lower mantle KW - low-velocity zones KW - oxides KW - core KW - spectra KW - equations of state KW - Mossbauer spectra KW - ferropericlase KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812215249?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Equation+of+state+and+spin+crossover+of+%28Mg%2CFe%29O+at+high+pressure%2C+with+implications+for+explaining+topographic+relief+at+the+core-mantle+boundary&rft.au=Solomatova%2C+Natalia+V%3BJackson%2C+Jennifer+M%3BSturhahn%2C+Wolfgang%3BWicks%2C+June+K%3BZhao%2C+Jiyong%3BToellner%2C+Thomas+S%3BKalkan%2C+Bora%3BSteinhardt%2C+William+M&rft.aulast=Solomatova&rft.aufirst=Natalia&rft.date=2016-05-01&rft.volume=101&rft.issue=5&rft.spage=1084&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5510 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2016-01-01 N1 - Number of references - 63 N1 - PubXState - DC N1 - Document feature - illus. incl. 8 tables N1 - Last updated - 2016-08-18 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - core; core-mantle boundary; equations of state; experimental studies; ferropericlase; high pressure; interior; low-velocity zones; lower mantle; mantle; Mossbauer spectra; outer core; oxides; pressure; spectra; synchrotron radiation; X-ray diffraction data DO - http://dx.doi.org/10.2138/am-2016-5510 ER - TY - JOUR T1 - Divergent responses of viral and bacterial communities in the gut microbiome to dietary disturbances in mice AN - 1794498547; PQ0002948881 AB - To improve our understanding of the stability of mammalian intestinal communities, we characterized the responses of both bacterial and viral communities in murine fecal samples to dietary changes between high- and low-fat (LF) diets. Targeted DNA extraction methods for bacteria, virus-like particles and induced prophages were used to generate bacterial and viral metagenomes as well as 16S ribosomal RNA amplicons. Gut microbiome communities from two cohorts of C57BL/6 mice were characterized in a 6-week diet perturbation study in response to high fiber, LF and high-refined sugar, milkfat (MF) diets. The resulting metagenomes from induced bacterial prophages and extracellular viruses showed significant overlap, supporting a largely temperate viral lifestyle within these gut microbiomes. The resistance of baseline communities to dietary disturbances was evaluated, and we observed contrasting responses of baseline LF and MF bacterial and viral communities. In contrast to baseline LF viral communities and bacterial communities in both diet treatments, baseline MF viral communities were sensitive to dietary disturbances as reflected in their non-recovery during the washout period. The contrasting responses of bacterial and viral communities suggest that these communities can respond to perturbations independently of each other and highlight the potentially unique role of viruses in gut health. JF - ISME Journal AU - Howe, Adina AU - Ringus, Daina L AU - Williams, Ryan J AU - Choo, Zi-Ning AU - Greenwald, Stephanie M AU - Owens, Sarah M AU - Coleman, Maureen L AU - Meyer, Folker AU - Chang, Eugene B AD - Iowa State University, Ames, IA, USA; Argonne National Laboratory, Argonne, IL, USA Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 1217 EP - 1227 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 10 IS - 5 SN - 1751-7362, 1751-7362 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Virology & AIDS Abstracts KW - Diets KW - Bacteria KW - Fibers KW - Sugar KW - Digestive tract KW - Virus-like particles KW - Intestine KW - DNA KW - rRNA 16S KW - Prophages KW - V 22410:Animal Diseases KW - A 01490:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1794498547?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ISME+Journal&rft.atitle=Divergent+responses+of+viral+and+bacterial+communities+in+the+gut+microbiome+to+dietary+disturbances+in+mice&rft.au=Howe%2C+Adina%3BRingus%2C+Daina+L%3BWilliams%2C+Ryan+J%3BChoo%2C+Zi-Ning%3BGreenwald%2C+Stephanie+M%3BOwens%2C+Sarah+M%3BColeman%2C+Maureen+L%3BMeyer%2C+Folker%3BChang%2C+Eugene+B&rft.aulast=Howe&rft.aufirst=Adina&rft.date=2016-05-01&rft.volume=10&rft.issue=5&rft.spage=1217&rft.isbn=&rft.btitle=&rft.title=ISME+Journal&rft.issn=17517362&rft_id=info:doi/10.1038%2Fismej.2015.183 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-06-01 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Diets; Sugar; Fibers; Virus-like particles; Digestive tract; DNA; Intestine; rRNA 16S; Prophages; Bacteria DO - http://dx.doi.org/10.1038/ismej.2015.183 ER - TY - JOUR T1 - The role of Te(IV) and Bi(III) chloride complexes in hydrothermal mass transfer; an X-ray absorption spectroscopic study AN - 1789752242; 2016-045210 AB - Tellurium (Te) and bismuth (Bi) are two metal(loid)s often enriched together with gold (Au) in hydrothermal deposits; however the speciation and transport properties for these two metals in hydrothermal systems are poorly understood. We investigated the effect of chloride on the speciation of Te(IV) and Bi(III) in hydrothermal solutions using in-situ XAS spectroscopy. At ambient temperature, oxy-hydroxide complexes containing the [TeO (sub 3) ] moiety (e.g., H (sub 3) TeO (sub 3) (super +) under highly acidic conditions) predominate in salty solutions over a wide range in pH and salt concentrations. Te(IV)-Cl complexes only appear at pH (sub 25 degrees C) or = 10). The highest order Te(IV) chloride complex detected is TeCl (sub 4(aq)) , and contains the [TeCl (sub 4) ] moiety. Upon heating to 199 degrees C, the Te(IV)-Cl complexes become more stable; however they still required highly acidic conditions which are likely to exist only in very limited environments in nature. At ambient temperature, Bi(III) is coordinated to 5.5(5) Cl atoms in high salinity, acidic (HCl > or = 0.5 m) chloride solutions. This, combined with large EXAFS-derived structural disorder parameters, suggests that the Bi(III) complex is most likely present as both BiCl (sub 5) (super 2-) and BiCl (sub 6) (super 3-) . The number of Cl atoms coordinated to Bi(III) decreases with increasing temperature; at around 200 degrees C and above, Bi(III) is coordinated to three Cl atoms. Overall the data show that Te(IV) chloride complexes can be ignored in predicting Te mobility under oxidizing conditions in most geological environments, but that Bi(III) chloride complexes are expected to account for Bi mobility in acidic brines. New thermodynamic properties for Bi(III) chloride complexes are provided to improve reactive transport modeling of Bi up to 500 degrees C. Although higher order complexes such as BiCl (sub 5) (super 2-) and BiCl (sub 6) (super 3-) exist at ambient temperature, the BiCl (sub 3) (aq) complex becomes the predominant chloride complex in saline solutions at T > or = 200 degrees C. Abstract Copyright (2016) Elsevier, B.V. JF - Chemical Geology AU - Etschmann, Barbara E AU - Liu, Weihua AU - Pring, Allan AU - Grundler, Pascal V AU - Tooth, Blake AU - Borg, Stacey AU - Testemale, Denis AU - Brewe, Dale AU - Brugger, Joel Y1 - 2016/05/01/ PY - 2016 DA - 2016 May 01 SP - 37 EP - 51 PB - Elsevier, Amsterdam VL - 425 SN - 0009-2541, 0009-2541 KW - mineral exploration KW - mineral deposits, genesis KW - halides KW - tellurium KW - complexing KW - bismuth KW - XANES spectra KW - metallogeny KW - chemical reactions KW - phase equilibria KW - chlorides KW - oxides KW - gold ores KW - spectra KW - mass transfer KW - pH KW - P-T conditions KW - prediction KW - X-ray spectra KW - hydrothermal conditions KW - hydroxides KW - metals KW - brines KW - metal ores KW - EXAFS data KW - crystal chemistry KW - chemical fractionation KW - 27A:Economic geology, geology of ore deposits KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789752242?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemical+Geology&rft.atitle=The+role+of+Te%28IV%29+and+Bi%28III%29+chloride+complexes+in+hydrothermal+mass+transfer%3B+an+X-ray+absorption+spectroscopic+study&rft.au=Etschmann%2C+Barbara+E%3BLiu%2C+Weihua%3BPring%2C+Allan%3BGrundler%2C+Pascal+V%3BTooth%2C+Blake%3BBorg%2C+Stacey%3BTestemale%2C+Denis%3BBrewe%2C+Dale%3BBrugger%2C+Joel&rft.aulast=Etschmann&rft.aufirst=Barbara&rft.date=2016-05-01&rft.volume=425&rft.issue=&rft.spage=37&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2016.01.015 L2 - http://www.sciencedirect.com/science/journal/00092541 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 96 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2016-05-19 N1 - CODEN - CHGEAD N1 - SubjectsTermNotLitGenreText - bismuth; brines; chemical fractionation; chemical reactions; chlorides; complexing; crystal chemistry; EXAFS data; gold ores; halides; hydrothermal conditions; hydroxides; mass transfer; metal ores; metallogeny; metals; mineral deposits, genesis; mineral exploration; oxides; P-T conditions; pH; phase equilibria; prediction; spectra; tellurium; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.chemgeo.2016.01.015 ER - TY - JOUR T1 - Quantitative 3D electromagnetic field determination of 1D nanostructures from single projection. AN - 1779881068; 26998702 AB - One-dimensional (1D) nanostructures have been regarded as the most promising building blocks for nanoelectronics and nanocomposite material systems as well as for alternative energy applications. Although they result in confinement of a material, their properties and interactions with other nanostructures are still very much three-dimensional (3D) in nature. In this work, we present a novel method for quantitative determination of the 3D electromagnetic fields in and around 1D nanostructures using a single electron wave phase image, thereby eliminating the cumbersome acquisition of tomographic data. Using symmetry arguments, we have reconstructed the 3D magnetic field of a nickel nanowire as well as the 3D electric field around a carbon nanotube field emitter, from one single projection. The accuracy of quantitative values determined here is shown to be a better fit to the physics at play than the value obtained by conventional analysis. Moreover the 3D reconstructions can then directly be visualized and used in the design of functional 3D architectures built using 1D nanostructures. JF - Ultramicroscopy AU - Phatak, C AU - de Knoop, L AU - Houdellier, F AU - Gatel, C AU - Hÿtch, M J AU - Masseboeuf, A AD - Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA. Electronic address: cd@anl.gov. ; CEMES-CNRS, 29 rue Jeanne Marvig, F-31055 Toulouse, France; Université Paul Sabatier, F-31000 Toulouse, France. ; CEMES-CNRS, 29 rue Jeanne Marvig, F-31055 Toulouse, France. Y1 - 2016/05// PY - 2016 DA - May 2016 SP - 24 EP - 30 VL - 164 KW - Transmission electron microscopy KW - Phase reconstruction KW - 1D nanostructures KW - 3D electromagnetic fields UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1779881068?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ultramicroscopy&rft.atitle=Quantitative+3D+electromagnetic+field+determination+of+1D+nanostructures+from+single+projection.&rft.au=Phatak%2C+C%3Bde+Knoop%2C+L%3BHoudellier%2C+F%3BGatel%2C+C%3BH%C3%BFtch%2C+M+J%3BMasseboeuf%2C+A&rft.aulast=Phatak&rft.aufirst=C&rft.date=2016-05-01&rft.volume=164&rft.issue=&rft.spage=24&rft.isbn=&rft.btitle=&rft.title=Ultramicroscopy&rft.issn=1879-2723&rft_id=info:doi/10.1016%2Fj.ultramic.2016.03.005 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-08-23 N1 - Date created - 2016-04-08 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.ultramic.2016.03.005 ER - TY - JOUR T1 - The "Tully monster" is a vertebrate AN - 1797543984; 2016-054142 JF - Nature (London) AU - McCoy, Victoria E AU - Saupe, Erin E AU - Lamsdell, James C AU - Tarhan, Lidya G AU - McMahon, Sean AU - Lidgard, Scott AU - Mayer, Paul AU - Whalen, Christopher D AU - Soriano, Carmen AU - Finney, Lydia AU - Vogt, Stefan AU - Clark, Elizabeth G AU - Anderson, Ross P AU - Petermann, Holger AU - Locatelli, Emma R AU - Briggs, Derek E G Y1 - 2016/04/28/ PY - 2016 DA - 2016 Apr 28 SP - 496 EP - 499 PB - Macmillan Journals, London VL - 532 IS - 7600 SN - 0028-0836, 0028-0836 KW - United States KW - Mazon Creek KW - Chordata KW - Illinois KW - affinities KW - phylogeny KW - Paleozoic KW - Carboniferous KW - Tullimonstrum KW - morphology KW - problematic fossils KW - Tullimonstrum gregarium KW - classification KW - taxonomy KW - Vertebrata KW - 11:Vertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797543984?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+%28London%29&rft.atitle=The+%22Tully+monster%22+is+a+vertebrate&rft.au=McCoy%2C+Victoria+E%3BSaupe%2C+Erin+E%3BLamsdell%2C+James+C%3BTarhan%2C+Lidya+G%3BMcMahon%2C+Sean%3BLidgard%2C+Scott%3BMayer%2C+Paul%3BWhalen%2C+Christopher+D%3BSoriano%2C+Carmen%3BFinney%2C+Lydia%3BVogt%2C+Stefan%3BClark%2C+Elizabeth+G%3BAnderson%2C+Ross+P%3BPetermann%2C+Holger%3BLocatelli%2C+Emma+R%3BBriggs%2C+Derek+E+G&rft.aulast=McCoy&rft.aufirst=Victoria&rft.date=2016-04-28&rft.volume=532&rft.issue=7600&rft.spage=496&rft.isbn=&rft.btitle=&rft.title=Nature+%28London%29&rft.issn=00280836&rft_id=info:doi/10.1038%2Fnature16992 L2 - http://www.nature.com/nature/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 22 N1 - Document feature - illus. N1 - Last updated - 2016-06-17 N1 - CODEN - NATUAS N1 - SubjectsTermNotLitGenreText - affinities; Carboniferous; Chordata; classification; Illinois; Mazon Creek; morphology; Paleozoic; phylogeny; problematic fossils; taxonomy; Tullimonstrum; Tullimonstrum gregarium; United States; Vertebrata DO - http://dx.doi.org/10.1038/nature16992 ER - TY - JOUR T1 - Patterned Formation of Highly Coherent Nitrogen-Vacancy Centers Using a Focused Electron Irradiation Technique. AN - 1781152992; 27010642 AB - We demonstrate fully three-dimensional and patterned localization of nitrogen-vacancy (NV) centers in diamond with coherence times in excess of 1 ms. Nitrogen δ-doping during chemical vapor deposition diamond growth vertically confines nitrogen to 4 nm while electron irradiation with a transmission electron microscope laterally confines vacancies to less than 450 nm. We characterize the effects of electron energy and dose on NV formation. Importantly, our technique enables the formation of reliably high-quality NV centers inside diamond nanostructures with applications in quantum information and sensing. JF - Nano letters AU - McLellan, Claire A AU - Myers, Bryan A AU - Kraemer, Stephan AU - Ohno, Kenichi AU - Awschalom, David D AU - Bleszynski Jayich, Ania C AD - Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States. Y1 - 2016/04/13/ PY - 2016 DA - 2016 Apr 13 SP - 2450 EP - 2454 VL - 16 IS - 4 KW - transmission electron microscopy KW - diamond KW - quantum coherence KW - Nitrogen-vacancy center UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1781152992?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Patterned+Formation+of+Highly+Coherent+Nitrogen-Vacancy+Centers+Using+a+Focused+Electron+Irradiation+Technique.&rft.au=McLellan%2C+Claire+A%3BMyers%2C+Bryan+A%3BKraemer%2C+Stephan%3BOhno%2C+Kenichi%3BAwschalom%2C+David+D%3BBleszynski+Jayich%2C+Ania+C&rft.aulast=McLellan&rft.aufirst=Claire&rft.date=2016-04-13&rft.volume=16&rft.issue=4&rft.spage=2450&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b05304 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-09-09 N1 - Date created - 2016-04-13 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b05304 ER - TY - JOUR T1 - Supported Tetrahedral Oxo-Sn Catalyst: Single Site, Two Modes of Catalysis. AN - 1779891495; 26986621 AB - Mild calcination in ozone of a (POSS)-Sn-(POSS) complex grafted on silica generated a heterogenized catalyst that mostly retained the tetrahedral coordination of its homogeneous precursor, as evidenced by spectroscopic characterizations using EXAFS, NMR, UV-vis, and DRIFT. The Sn centers are accessible and uniform and can be quantified by stoichiometric pyridine poisoning. This Sn-catalyst is active in hydride transfer reactions as a typical solid Lewis acid. However, the Sn centers can also create Brønsted acidity with alcohol by binding the alcohol strongly as alkoxide and transferring the hydroxyl H to the neighboring Sn-O-Si bond. The resulting acidic silanol is active in epoxide ring opening and acetalization reactions. JF - Journal of the American Chemical Society AU - Beletskiy, Evgeny V AU - Hou, Xianliang AU - Shen, Zhongliang AU - Gallagher, James R AU - Miller, Jeffrey T AU - Wu, Yuyang AU - Li, Tiehu AU - Kung, Mayfair C AU - Kung, Harold H AD - Northwestern Polytechnical University , Xi'an, Shaanxi 710072, PR China. ; Chemical Sciences Division, Argonne National Laboratory , Naperville, Illinois 60429, United States. ; Chemical Engineering Department, Purdue University , West Lafayette, Indiana 47907, United States. Y1 - 2016/04/06/ PY - 2016 DA - 2016 Apr 06 SP - 4294 EP - 4297 VL - 138 IS - 13 KW - Index Medicus UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1779891495?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=Supported+Tetrahedral+Oxo-Sn+Catalyst%3A+Single+Site%2C+Two+Modes+of+Catalysis.&rft.au=Beletskiy%2C+Evgeny+V%3BHou%2C+Xianliang%3BShen%2C+Zhongliang%3BGallagher%2C+James+R%3BMiller%2C+Jeffrey+T%3BWu%2C+Yuyang%3BLi%2C+Tiehu%3BKung%2C+Mayfair+C%3BKung%2C+Harold+H&rft.aulast=Beletskiy&rft.aufirst=Evgeny&rft.date=2016-04-06&rft.volume=138&rft.issue=13&rft.spage=4294&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Chemical+Society&rft.issn=1520-5126&rft_id=info:doi/10.1021%2Fjacs.5b13436 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-11-11 N1 - Date created - 2016-04-07 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/jacs.5b13436 ER - TY - JOUR T1 - Long cycle life microporous spherical carbon anodes for sodium-ion batteries derived from furfuryl alcohol AN - 1790976000; PQ0002984704 AB - Spherical micron-sized carbon powders were synthesized from feedstock furfuryl alcohol and tested as anodes in sodium ion batteries (SIBs). A long cycle life of 1000 cycles is achievable with this carbon at C rate (3-4 mg cm super(-2) loading and i= 200 mA g super(-1)) yielding a steady capacity of ca.115 mA h g super(-1). The results from solid-state super(23)Na MAS NMR analyses of cycled electrodes indicate no correlation in voltage profiles with sodium site nature (graphene or nanopores), which is a new observation in SIB carbon anodes. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Zhou, Dehua AU - Peer, Maryam AU - Yang, Zhenzhen AU - Pol, Vilas G AU - Key, Fulya Dogan AU - Jorne, Jacob AU - Foley, Henry C AU - Johnson, Christopher S AD - Electrochemical Energy Storage Department; Chemical Sciences and Engineering Division; Argonne National Laboratory; 9700 S. Cass Avenue; Lemont; IL 60439; USA Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 6271 EP - 6275 PB - Royal Society of Chemistry VL - 4 IS - 17 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Sodium KW - Alcohol KW - Batteries KW - Energy KW - Electrodes KW - NMR KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790976000?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Long+cycle+life+microporous+spherical+carbon+anodes+for+sodium-ion+batteries+derived+from+furfuryl+alcohol&rft.au=Zhou%2C+Dehua%3BPeer%2C+Maryam%3BYang%2C+Zhenzhen%3BPol%2C+Vilas+G%3BKey%2C+Fulya+Dogan%3BJorne%2C+Jacob%3BFoley%2C+Henry+C%3BJohnson%2C+Christopher+S&rft.aulast=Zhou&rft.aufirst=Dehua&rft.date=2016-04-01&rft.volume=4&rft.issue=17&rft.spage=6271&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc6ta00242k LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 29 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Sodium; Alcohol; Batteries; Energy; Electrodes; NMR; Sustainability DO - http://dx.doi.org/10.1039/c6ta00242k ER - TY - JOUR T1 - Graphene in perovskite solar cells: device design, characterization and implementation AN - 1790975276; PQ0002984697 AB - Conversion of light energy directly into electricity by solar cell devices represents one of the most promising options for highly scalable renewable power. Tremendous effort has been directed at improving photovoltaic (PV) conversion efficiencies, resulting in dramatic device performance increases over the past two decades for novel, cost-effective PV systems. Nevertheless, performance issues related to device stability, scalability, and flexibility prevent these novel designs from achieving their market potential. For mechanically flexible architectures, integration of new materials such as graphene-derived nanomaterials (i.e.graphene/graphite oxide and their modified analogs with other nanocarbons and carbon nanotubes) may be necessary to enhance alternatives to silicon-based PV systems. Among the diverse solar technologies, perovskite solar cells-most notably organometal halides-have stood out from the crowd with solar efficiencies over 20% and potential for highly scalable manufacturing. Here, we review the use of graphene and graphene-derived nanomaterials in new designs of perovskite solar cells associated with organic-inorganic metal halide perovskites utilized as light-harvesting layers, outlining design perspectives, device characterization, and performance. Recent efforts to clarify stability issues and efficiency control mechanisms are also briefly discussed, and we provide some perspective on the currently available literature and future research directions in the field. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Acik, Muge AU - Darling, Seth B AD - Center for Nanoscale Materials; Argonne National Laboratory; 9700 South Cass Avenue, Lemont; Illinois 60439; USA Y1 - 2016/04// PY - 2016 DA - April 2016 SP - 6185 EP - 6235 PB - Royal Society of Chemistry VL - 4 IS - 17 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Metals KW - Solar cells KW - Energy KW - Reviews KW - Economics KW - Halides KW - Sustainability KW - Nanotechnology KW - Design KW - Technology KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790975276?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Graphene+in+perovskite+solar+cells%3A+device+design%2C+characterization+and+implementation&rft.au=Acik%2C+Muge%3BDarling%2C+Seth+B&rft.aulast=Acik&rft.aufirst=Muge&rft.date=2016-04-01&rft.volume=4&rft.issue=17&rft.spage=6185&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta09911k LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 273 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Metals; Reviews; Energy; Solar cells; Economics; Halides; Sustainability; Technology; Design; Nanotechnology DO - http://dx.doi.org/10.1039/c5ta09911k ER - TY - JOUR T1 - Directed self-assembly of solvent-vapor-induced non-bulk block copolymer morphologies on nanopatterned substrates. AN - 1772145185; 26891026 AB - We report a study on directed self-assembly (DSA) with solvent annealing to induce the formation of non-bulk block copolymer microdomains on chemical patterns. Ultrathin films of symmetric polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) display morphologies of PMMA dots, stripes, and PS hexagons with increasing exposure time to acetone vapor, a PMMA-selective solvent. All three nanostructures form long-range-ordered and registered arrays on striped chemical patterns with periods (LS) commensurate to the solvated PS-b-PMMA microdomain period (L0,s). Solvent annealing is shown to facilitate DSA on non-regular chemical patterns, on which the local periods are incommensurate to L0,s. DSA with feature density multiplication, via solvent annealing, is also demonstrated. JF - Soft matter AU - Wan, Lei AU - Ji, Shengxiang AU - Liu, Chi-Chun AU - Craig, Gordon S W AU - Nealey, Paul F AD - HGST, a Western Digital Company, San Jose Research Center, 3403 Yerba Buena Rd., San Jose, CA 95135, USA. ; Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Science, 5625 Renmin Street, Changchun, 130022 China. ; IBM Albany NanoTech, 257 Fuller Road, Albany, NY 12203, USA. ; Institute for Molecular Engineering, University of Chicago, 5747 South Ellis Avenue, Chicago, IL 60637, USA. nealey@uchicago.edu. Y1 - 2016/03/21/ PY - 2016 DA - 2016 Mar 21 SP - 2914 EP - 2922 VL - 12 IS - 11 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1772145185?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soft+matter&rft.atitle=Directed+self-assembly+of+solvent-vapor-induced+non-bulk+block+copolymer+morphologies+on+nanopatterned+substrates.&rft.au=Wan%2C+Lei%3BJi%2C+Shengxiang%3BLiu%2C+Chi-Chun%3BCraig%2C+Gordon+S+W%3BNealey%2C+Paul+F&rft.aulast=Wan&rft.aufirst=Lei&rft.date=2016-03-21&rft.volume=12&rft.issue=11&rft.spage=2914&rft.isbn=&rft.btitle=&rft.title=Soft+matter&rft.issn=1744-6848&rft_id=info:doi/10.1039%2Fc5sm02829a LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-07-14 N1 - Date created - 2016-03-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1039/c5sm02829a ER - TY - JOUR T1 - Wide-area decontamination in an urban environment after radiological dispersion: A review and perspectives. AN - 1760882705; 26642448 AB - Nuclear or radiological terrorism in the form of uncontrolled radioactive contamination presents a unique challenge in the field of nuclear decontamination. Potential targets require an immediate decontamination response, or mitigation plan to limit the social and economic impact. To date, experience with urban decontamination of building materials - specifically hard, porous, external surfaces - is limited to nuclear weapon fallout and nuclear reactor accidents. Methods are lacking for performing wide-area decontamination in an urban environment so that in all release scenarios the area may be re-occupied without evaluation and/or restriction. Also lacking is experience in developing mitigation strategies, that is, methods of mitigating contamination and its resultant radiation dose in key areas during the immediate aftermath of an event and after lifesaving operations. To date, the tremendous strategy development effort primarily by the European community has focused on the recovery phase, which extends years beyond the release event. In this review, we summarize the methods and data collected over the past 70 years in the field of hard, external surface decontamination of radionuclide contaminations, with emphasis on methods suitable for response to radiological dispersal devices and their potentially unique physico-chemical characteristics. This review concludes that although a tremendous amount of work has been completed primarily by the European Community (EU) and the United Kingdom (UK), the few studies existing on each technique permit only very preliminary estimates of decontamination factors for various building materials and methods and extrapolation of those values for use in environments outside the EU and UK. This data shortage prevents us from developing an effective and detailed mitigation response plan and remediation effort. Perhaps most importantly, while the data available does include valuable information on the practical aspects of performing the various remediation methods including costs, coverage rates, manpower, pitfalls, etc., it lacks the details on lessons learned, best practices, and standard procedures, for instance, that would be required to develop a mitigation strategy. While the urban decontamination problem is difficult and there is much more research to do, the existing literature provides a framework for a response plan. Using this framework, in conjunction with computer modeling and relevant data collection, can lead to development of appropriate plans and exercises that would permit development of a mitigation and remediation response. JF - Journal of hazardous materials AU - Kaminski, Michael D AU - Lee, Sang Don AU - Magnuson, Matthew AD - Nuclear Decontamination and Separations, Nuclear Engineering Division, Argonne National Laboratory, United States. Electronic address: Kaminski@anl.gov. ; US Environmental Protection Agency, Office of Research and Development, National Homeland Security Research Center, United States. Y1 - 2016/03/15/ PY - 2016 DA - 2016 Mar 15 SP - 67 EP - 86 VL - 305 KW - Index Medicus KW - Remediation KW - Radioactive contamination KW - Nuclear fallout KW - Decontamination KW - Radionuclide dispersal device KW - Cities KW - Terrorism KW - Radioactive Hazard Release UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1760882705?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+hazardous+materials&rft.atitle=Wide-area+decontamination+in+an+urban+environment+after+radiological+dispersion%3A+A+review+and+perspectives.&rft.au=Kaminski%2C+Michael+D%3BLee%2C+Sang+Don%3BMagnuson%2C+Matthew&rft.aulast=Kaminski&rft.aufirst=Michael&rft.date=2016-03-15&rft.volume=305&rft.issue=&rft.spage=67&rft.isbn=&rft.btitle=&rft.title=Journal+of+hazardous+materials&rft.issn=1873-3336&rft_id=info:doi/10.1016%2Fj.jhazmat.2015.11.014 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-10-06 N1 - Date created - 2016-01-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.jhazmat.2015.11.014 ER - TY - JOUR T1 - Data publication with the structural biology data grid supports live analysis. AN - 1771450462; 26947396 AB - Access to experimental X-ray diffraction image data is fundamental for validation and reproduction of macromolecular models and indispensable for development of structural biology processing methods. Here, we established a diffraction data publication and dissemination system, Structural Biology Data Grid (SBDG; data.sbgrid.org), to preserve primary experimental data sets that support scientific publications. Data sets are accessible to researchers through a community driven data grid, which facilitates global data access. Our analysis of a pilot collection of crystallographic data sets demonstrates that the information archived by SBDG is sufficient to reprocess data to statistics that meet or exceed the quality of the original published structures. SBDG has extended its services to the entire community and is used to develop support for other types of biomedical data sets. It is anticipated that access to the experimental data sets will enhance the paradigm shift in the community towards a much more dynamic body of continuously improving data analysis. JF - Nature communications AU - Meyer, Peter A AU - Socias, Stephanie AU - Key, Jason AU - Ransey, Elizabeth AU - Tjon, Emily C AU - Buschiazzo, Alejandro AU - Lei, Ming AU - Botka, Chris AU - Withrow, James AU - Neau, David AU - Rajashankar, Kanagalaghatta AU - Anderson, Karen S AU - Baxter, Richard H AU - Blacklow, Stephen C AU - Boggon, Titus J AU - Bonvin, Alexandre M J J AU - Borek, Dominika AU - Brett, Tom J AU - Caflisch, Amedeo AU - Chang, Chung-I AU - Chazin, Walter J AU - Corbett, Kevin D AU - Cosgrove, Michael S AU - Crosson, Sean AU - Dhe-Paganon, Sirano AU - Di Cera, Enrico AU - Drennan, Catherine L AU - Eck, Michael J AU - Eichman, Brandt F AU - Fan, Qing R AU - Ferré-D'Amaré, Adrian R AU - Fromme, J Christopher AU - Garcia, K Christopher AU - Gaudet, Rachelle AU - Gong, Peng AU - Harrison, Stephen C AU - Heldwein, Ekaterina E AU - Jia, Zongchao AU - Keenan, Robert J AU - Kruse, Andrew C AU - Kvansakul, Marc AU - McLellan, Jason S AU - Modis, Yorgo AU - Nam, Yunsun AU - Otwinowski, Zbyszek AU - Pai, Emil F AU - Pereira, Pedro José Barbosa AU - Petosa, Carlo AU - Raman, C S AU - Rapoport, Tom A AU - Roll-Mecak, Antonina AU - Rosen, Michael K AU - Rudenko, Gabby AU - Schlessinger, Joseph AU - Schwartz, Thomas U AU - Shamoo, Yousif AU - Sondermann, Holger AU - Tao, Yizhi J AU - Tolia, Niraj H AU - Tsodikov, Oleg V AU - Westover, Kenneth D AU - Wu, Hao AU - Foster, Ian AU - Fraser, James S AU - Maia, Filipe R N C AU - Gonen, Tamir AU - Kirchhausen, Tom AU - Diederichs, Kay AU - Crosas, Mercè AU - Sliz, Piotr AD - Department of Biological Chemistry and Molecular Pharmacology, Boston, Massachusetts 02115, USA. ; Laboratory of Molecular &Structural Microbiology, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay. ; Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China. ; Harvard Medical School, Boston, Massachusetts 02115, USA. ; NE-CAT and Department of Chemistry and Chemical Biology, Cornell University, Building 436E, Argonne National Laboratory, 9700S. Cass Avenue, Argonne, Illinois 60439, USA. ; Departments of Pharmacology and Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Department of Chemistry, Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520, USA. ; Bijvoet Center, Faculty of Science, Utrecht University, 3584 CH Utrecht, The Netherlands. ; Departments of Biophysics and Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Internal Medicine, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; Department of Biochemistry, University of Zurich, CH-8057 Zurich, Switzerland. ; Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan. ; Departments of Biochemistry and Chemistry, Center for Structural Biology, Vanderbilt University, Nashville, Tennessee 37232, USA. ; Ludwig Institute for Cancer Research, San Diego Branch, La Jolla, California 92093, USA. ; Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, New York 13210, USA. ; Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA. ; Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA. ; Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St Louis, Missouri 63104, USA. ; Departments of Chemistry and Biology and the Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Department of Biological Sciences and Center for Structural Biology, Vanderbilt University, Nashville, Tennessee 37235, USA. ; Departments of Pharmacology and Pathology and Cell Biology, Columbia University, New York, New York 10032, USA. ; Laboratory of RNA Biophysics, National Heart, Lung and Blood Institute, NIH, Bethesda, Maryland 20892, USA. ; Department of Molecular Biology and Genetics, Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York 14853, USA. ; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138, USA. ; Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China. ; Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts 02111, USA. ; Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada K7M 3G5. ; Department of Biochemistry and Genetics, La Trobe University, Melbourne, Victoria 3086, Australia. ; Department of Biochemistry, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire 03755, USA. ; Department of Medicine, University of Cambridge, MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK. ; University of Texas, Southwestern Medical Center, Dallas, Texas 75390, USA. ; Departments of Biochemistry, Medical Biophysics and Molecular Genetics, University of Toronto, Toronto, Ontario, Canada M5S 1A8. ; IBMC-Instituto de Biologia Molecular e Celular and Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4150 Porto, Portugal. ; Université Grenoble Alpes/CNRS/CEA, Institut de Biologie Structurale, 38027 Grenoble, France. ; Department of Pharmaceutical Sciences, University of Maryland, Baltimore, Maryland 21201, USA. ; Howard Hughes Medical Institute and Harvard Medical School, Department of Cell Biology, Boston, Massachusetts 02115, USA. ; Cell Biology and Biophysics Unit, Porter Neuroscience Research Center, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland 20892, USA. ; Department of Biophysics and Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA. ; Department of Pharmacology and Toxicology, Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, Texas 77555, USA. ; Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Department of BioSciences, Rice University, Houston, Texas 77005, USA. ; Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, New York 14853, USA. ; Department of Molecular Microbiology, Washington University School of Medicine, St Louis, Missouri 63110, USA. ; Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, USA. ; Departments of Biochemistry and Radiation Oncology, University of Texas, Southwestern Medical Center, Dallas, Texas 75390, USA. ; Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, Illinois, and Department of Computer Science, University of Chicago, Chicago, Illinois 60637, USA. ; Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, California 94158, USA. ; Laboratory of Molecular Biophysics, Department of Cell and Molecular Biology, Uppsala University, Husargatan 3 (Box 596), SE-751 24 Uppsala, Sweden. ; Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia 20147 USA. ; Program in Cellular and Molecular Medicine and Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts 02115, USA. ; Department of Biology, University of Konstanz, D-78457 Konstanz, Germany. ; Institute for Quantitative Social Science, Harvard University, Cambridge, Massachusetts, 02138, USA. Y1 - 2016/03/07/ PY - 2016 DA - 2016 Mar 07 SP - 10882 VL - 7 KW - Macromolecular Substances KW - 0 KW - Index Medicus KW - Software KW - Crystallography, X-Ray KW - Internet KW - Publications KW - Databases, Genetic KW - Macromolecular Substances -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1771450462?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+communications&rft.atitle=Data+publication+with+the+structural+biology+data+grid+supports+live+analysis.&rft.au=Meyer%2C+Peter+A%3BSocias%2C+Stephanie%3BKey%2C+Jason%3BRansey%2C+Elizabeth%3BTjon%2C+Emily+C%3BBuschiazzo%2C+Alejandro%3BLei%2C+Ming%3BBotka%2C+Chris%3BWithrow%2C+James%3BNeau%2C+David%3BRajashankar%2C+Kanagalaghatta%3BAnderson%2C+Karen+S%3BBaxter%2C+Richard+H%3BBlacklow%2C+Stephen+C%3BBoggon%2C+Titus+J%3BBonvin%2C+Alexandre+M+J+J%3BBorek%2C+Dominika%3BBrett%2C+Tom+J%3BCaflisch%2C+Amedeo%3BChang%2C+Chung-I%3BChazin%2C+Walter+J%3BCorbett%2C+Kevin+D%3BCosgrove%2C+Michael+S%3BCrosson%2C+Sean%3BDhe-Paganon%2C+Sirano%3BDi+Cera%2C+Enrico%3BDrennan%2C+Catherine+L%3BEck%2C+Michael+J%3BEichman%2C+Brandt+F%3BFan%2C+Qing+R%3BFerr%C3%A9-D%27Amar%C3%A9%2C+Adrian+R%3BFromme%2C+J+Christopher%3BGarcia%2C+K+Christopher%3BGaudet%2C+Rachelle%3BGong%2C+Peng%3BHarrison%2C+Stephen+C%3BHeldwein%2C+Ekaterina+E%3BJia%2C+Zongchao%3BKeenan%2C+Robert+J%3BKruse%2C+Andrew+C%3BKvansakul%2C+Marc%3BMcLellan%2C+Jason+S%3BModis%2C+Yorgo%3BNam%2C+Yunsun%3BOtwinowski%2C+Zbyszek%3BPai%2C+Emil+F%3BPereira%2C+Pedro+Jos%C3%A9+Barbosa%3BPetosa%2C+Carlo%3BRaman%2C+C+S%3BRapoport%2C+Tom+A%3BRoll-Mecak%2C+Antonina%3BRosen%2C+Michael+K%3BRudenko%2C+Gabby%3BSchlessinger%2C+Joseph%3BSchwartz%2C+Thomas+U%3BShamoo%2C+Yousif%3BSondermann%2C+Holger%3BTao%2C+Yizhi+J%3BTolia%2C+Niraj+H%3BTsodikov%2C+Oleg+V%3BWestover%2C+Kenneth+D%3BWu%2C+Hao%3BFoster%2C+Ian%3BFraser%2C+James+S%3BMaia%2C+Filipe+R+N+C%3BGonen%2C+Tamir%3BKirchhausen%2C+Tom%3BDiederichs%2C+Kay%3BCrosas%2C+Merc%C3%A8%3BSliz%2C+Piotr&rft.aulast=Meyer&rft.aufirst=Peter&rft.date=2016-03-07&rft.volume=7&rft.issue=&rft.spage=10882&rft.isbn=&rft.btitle=&rft.title=Nature+communications&rft.issn=2041-1723&rft_id=info:doi/10.1038%2Fncomms10882 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-09-20 N1 - Date created - 2016-03-07 N1 - Date revised - 2017-02-18 N1 - SuppNotes - Cited By: J Synchrotron Radiat. 2012 May;19(Pt 3):462-7 [22514186] Methods Mol Biol. 2009;544:269-79 [19488705] Acta Crystallogr D Biol Crystallogr. 2013 Jul;69(Pt 7):1204-14 [23793146] Acta Crystallogr D Biol Crystallogr. 2013 Jul;69(Pt 7):1260-73 [23793152] Elife. 2013;2:e01456 [24040512] J Synchrotron Radiat. 2013 Nov;20(Pt 6):880-3 [24121332] Elife. 2013;2:e01345 [24252878] Acta Crystallogr D Biol Crystallogr. 2014 Oct;70(Pt 10):2510-9 [25286837] Acta Crystallogr D Biol Crystallogr. 2014 Oct;70(Pt 10):2520-32 [25286838] Acta Crystallogr D Biol Crystallogr. 2014 Oct;70(Pt 10):2533-43 [25286839] J Comput Aided Mol Des. 2014 Oct;28(10):1009-14 [25062767] Science. 2014 Oct 24;346(6208):1257998 [25342811] Proc Natl Acad Sci U S A. 2014 Dec 16;111(50):17887-92 [25453071] Structure. 2015 May 5;23(5):807-8 [25955101] Mol Biol Cell. 2015 Jun 1;26(11):2044-53 [25851602] Acta Crystallogr D Biol Crystallogr. 1999 Oct;55(Pt 10):1696-702 [10531519] Structure. 2014 Feb 4;22(2):182-4 [24507780] Nat Methods. 2014 Sep;11(9):927-30 [25086503] Acta Crystallogr D Biol Crystallogr. 2014 Sep;70(Pt 9):2487-99 [25195761] Structure. 1997 Dec 15;5(12):1599-612 [9438860] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):125-32 [20124692] Nat Struct Mol Biol. 2010 Jul;17(7):882-8 [20601960] Acta Crystallogr Sect F Struct Biol Cryst Commun. 2010 Oct 1;66(Pt 10):1137-42 [20944202] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):235-42 [21460441] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):271-81 [21460445] Nat Struct Biol. 2003 Dec;10(12):980 [14634627] Acta Crystallogr D Biol Crystallogr. 2014 Oct;70(Pt 10):2502-9 [25286836] Acta Crystallogr D Biol Crystallogr. 2006 Jan;62(Pt 1):72-82 [16369096] Protein Sci. 2007 Jun;16(6):1013-6 [17473006] Nature. 2007 Aug 9;448(7154):E1-2; discussion E2-3 [17687277] Science. 2012 May 25;336(6084):1030-3 [22628654] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/ncomms10882 ER - TY - JOUR T1 - Plasmon-Mediated Two-Photon Photoluminescence-Detected Circular Dichroism in Gold Nanosphere Assemblies. AN - 1770866577; 26854357 AB - We report plasmon-mediated two-photon photoluminescence (TPPL)-detected circular dichroism (CD) from colloidal metal nanoparticle assemblies. Two classes of solid gold nanosphere (SGN) dimers--heterodimers and homodimers--were examined using polarization-resolved TPPL, second harmonic generation (SHG), and one-photon photoluminescence (OPPL). Unambiguous CD was detected in both the TPPL and SHG signals, and the magnitudes of the CD responses in these measurements showed agreement for individual nanostructures. Heterodimers gave larger CD responses (average TPPL-CDR = 0.62 ± 0.33; average SHG-CDR = 0.51 ± 0.21) than homodimers (average TPPL-CDR = 0.19 ± 0.04; average SHG-CDR = 0.18 ± 0.06). OPPL-CD was not detected for either structure. Analysis of dimer emission properties suggested the CD responses were determined by properties of the one-photon-resonant mode excited by the laser. Average TPPL signals were (4.3 ± 0.6)× larger than those for SHG. Because signal amplitude is a primary determinant for spatial accuracies and precisions obtained from optical microscopy, CD contrast generated from plasmon-mediated TPPL, which we report for the first time, can extend the suite of super-resolution imaging techniques. JF - The journal of physical chemistry letters AU - Jarrett, Jeremy W AU - Zhao, Tian AU - Johnson, Jeffrey S AU - Liu, Xiaoying AU - Nealey, Paul F AU - Vaia, Richard A AU - Knappenberger, Kenneth L AD - Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306-4390, United States. ; The Institute for Molecular Engineering, University of Chicago , Chicago, Illinois 60637, United States. ; Air Force Research Laboratory , 2941 Hobson Way, Wright Patterson Air Force Base, Ohio 45433, United States. Y1 - 2016/03/03/ PY - 2016 DA - 2016 Mar 03 SP - 765 EP - 770 VL - 7 IS - 5 KW - Gold KW - 7440-57-5 KW - Index Medicus KW - Photons KW - Luminescence KW - Nanospheres KW - Circular Dichroism KW - Gold -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770866577?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+journal+of+physical+chemistry+letters&rft.atitle=Plasmon-Mediated+Two-Photon+Photoluminescence-Detected+Circular+Dichroism+in+Gold+Nanosphere+Assemblies.&rft.au=Jarrett%2C+Jeremy+W%3BZhao%2C+Tian%3BJohnson%2C+Jeffrey+S%3BLiu%2C+Xiaoying%3BNealey%2C+Paul+F%3BVaia%2C+Richard+A%3BKnappenberger%2C+Kenneth+L&rft.aulast=Jarrett&rft.aufirst=Jeremy&rft.date=2016-03-03&rft.volume=7&rft.issue=5&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=The+journal+of+physical+chemistry+letters&rft.issn=1948-7185&rft_id=info:doi/10.1021%2Facs.jpclett.5b02621 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-11-11 N1 - Date created - 2016-03-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.jpclett.5b02621 ER - TY - JOUR T1 - Model-based analysis of environmental controls over ecosystem primary production in an alpine tundra dry meadow AN - 1790974885; PQ0002973645 AB - We investigated several key limiting factors that control alpine tundra productivity by developing an ecosystem biogeochemistry model. The model simulates the coupled cycling of carbon (C), nitrogen (N), and phosphorus (P) and their interactions with gross primary production (GPP). It was parameterized with field observations from an alpine dry meadow ecosystem using a global optimization strategy to estimate the unknown parameters. The model, along with the estimated parameters, was first validated against independent data and then used to examine the environmental controls over plant productivity. Our results show that air temperature is the strongest limiting factor to GPP in the early growing season, N availability becomes important during the middle portion of the growing season, and soil moisture is the strongest limiting factors by late in the growing season. Overall, the controls over GPP during the growing season, from strongest to weakest, are soil moisture content, air temperature, N availability, and P availability. This simulation provides testable predictions of the shifting nature of physical and nutrient limitations on plant growth. The model also indicates that changing environmental conditions in the alpine will likely lead to changes in productivity. For example, warming eliminates the control of P availability on GPP and makes N availability surpass air temperature to become the second strongest limiting factor. In contrast, an increase in atmospheric nutrient deposition eliminates the control of N availability and enhances the importance of P availability. These analyses provide a quantitative and conceptual framework that can be used to test predictions and refine ecological analyses at this long-term ecological research site. JF - Biogeochemistry AU - Fan, Zhaosheng AU - Neff, Jason C AU - Wieder, William R AD - Environmental Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA, zfan@anl.gov Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 35 EP - 49 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 128 IS - 1-2 SN - 0168-2563, 0168-2563 KW - Ecology Abstracts; Sustainability Science Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Prediction KW - Ecosystems KW - Phosphorus KW - Nutrients KW - Primary production KW - Air temperature KW - Models KW - Carbon KW - Tundra KW - Meadows KW - Soils KW - Environmental Control KW - Modelling KW - Data processing KW - Air Temperature KW - Biogeochemistry KW - Biogeochemical cycle KW - Primary Productivity KW - Carbon cycle KW - Simulation KW - Limiting factors KW - Model Studies KW - Limiting Factors KW - Plant growth KW - Environmental conditions KW - Soil moisture KW - Productivity KW - Alpine environments KW - Nitrogen KW - Q2 09262:Methods and instruments KW - SW 0810:General KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790974885?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biogeochemistry&rft.atitle=Model-based+analysis+of+environmental+controls+over+ecosystem+primary+production+in+an+alpine+tundra+dry+meadow&rft.au=Fan%2C+Zhaosheng%3BNeff%2C+Jason+C%3BWieder%2C+William+R&rft.aulast=Fan&rft.aufirst=Zhaosheng&rft.date=2016-03-01&rft.volume=128&rft.issue=1-2&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Biogeochemistry&rft.issn=01682563&rft_id=info:doi/10.1007%2Fs10533-016-0193-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 74 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Carbon; Biogeochemical cycle; Biogeochemistry; Soils; Plant growth; Limiting factors; Primary production; Air temperature; Modelling; Data processing; Carbon cycle; Phosphorus; Nutrients; Models; Meadows; Tundra; Soil moisture; Environmental conditions; Nitrogen; Prediction; Simulation; Alpine environments; Air Temperature; Ecosystems; Primary Productivity; Limiting Factors; Environmental Control; Productivity; Model Studies DO - http://dx.doi.org/10.1007/s10533-016-0193-9 ER - TY - JOUR T1 - Wells to wheels: water consumption for transportation fuels in the United States AN - 1790930217; PQ0003093531 AB - The sustainability of energy resources such as transportation fuels is increasingly connected to the consumption of water resources. Water is required for irrigation in the development of bioenergy, reservoir creation in hydroelectric power generation, drilling and resource displacement in petroleum and gas production, mineral extraction in mining operations, and cooling and processing in thermoelectric power generation. Vehicles powered by petroleum, electricity, natural gas, ethanol, biodiesel, and hydrogen fuel cells consume water resources indirectly through fuel production cycles, and it is important to understand the impacts of these technologies on water resources. Previous investigations of water consumption for transportation fuels have focused primarily on key processes and pathways, ignoring the impacts of many intermediate, inter-related processes used in fuel production cycles. Herein, the results of a life cycle analysis of water consumption for transportation fuels in the United States using an extensive system boundary that includes the water embedded in intermediate processing and transportation fuels are presented. The Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model provides a comprehensive framework and system boundary for transportation fuel analysis in the United States. GREET was expanded to include water consumption and used to compare the water consumed per unit energy and per km traveled in light-duty vehicles. Many alternative fuels were found to consume larger quantities of water on a per km basis than traditional petroleum pathways, and it is therefore important to consider the implications of transportation and energy policy changes on water resources in the future. JF - Energy & Environmental Science AU - Lampert, David J AU - Cai, Hao AU - Elgowainy, Amgad AD - Argonne National Laboratory; Energy Systems Division; 9700 South Cass Avenue; Building 362; Lemont; IL 60439; USA; +1 630 252 2533 Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 787 EP - 802 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 9 IS - 3 SN - 1754-5692, 1754-5692 KW - Environment Abstracts KW - Fuel technology KW - Fuels KW - Water resources KW - Energy consumption KW - Water analysis KW - Natural gas KW - Sustainability KW - Water use KW - USA KW - Transportation KW - Petroleum KW - Energy KW - Water wells KW - Biofuels KW - Technology KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790930217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+%26+Environmental+Science&rft.atitle=Wells+to+wheels%3A+water+consumption+for+transportation+fuels+in+the+United+States&rft.au=Lampert%2C+David+J%3BCai%2C+Hao%3BElgowainy%2C+Amgad&rft.aulast=Lampert&rft.aufirst=David&rft.date=2016-03-01&rft.volume=9&rft.issue=3&rft.spage=787&rft.isbn=&rft.btitle=&rft.title=Energy+%26+Environmental+Science&rft.issn=17545692&rft_id=info:doi/10.1039%2Fc5ee03254g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 20 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Fuel technology; Fuels; Water resources; Energy consumption; Natural gas; Water analysis; Sustainability; Water use; Transportation; Energy; Petroleum; Water wells; Biofuels; Technology; USA DO - http://dx.doi.org/10.1039/c5ee03254g ER - TY - JOUR T1 - Policy Implications of Allocation Methods in the Life Cycle Analysis of Integrated Corn and Corn Stover Ethanol Production AN - 1780544653; PQ0002817117 AB - A biorefinery may produce multiple fuels from more than one feedstock. The ability of these fuels to qualify as one of the four types of biofuels under the US Renewable Fuel Standard and to achieve a low carbon intensity score under California's Low Carbon Fuel Standard can be strongly influenced by the approach taken to their life cycle analysis (LCA). For example, in facilities that may co-produce corn grain and corn stover ethanol, the ethanol production processes can share the combined heat and power (CHP) that is produced from the lignin and liquid residues from stover ethanol production. We examine different LCA approaches to corn grain and stover ethanol production considering different approaches to CHP treatment. In the baseline scenario, CHP meets the energy demands of stover ethanol production first, with additional heat and electricity generated sent to grain ethanol production. The resulting greenhouse gas (GHG) emissions for grain and stover ethanol are 57 and 25 g-CO sub(2)eq/MJ, respectively, corresponding to a 40 and 74 % reduction compared to the GHG emissions of gasoline. We illustrate that emissions depend on allocation of burdens of CHP production and corn farming, along with the facility capacities. Co-product handling techniques can strongly influence LCA results and should therefore be transparently documented. JF - BioEnergy Research AU - Canter, Christina E AU - Dunn, Jennifer B AU - Han, Jeongwoo AU - Wang, Zhichao AU - Wang, Michael AD - Systems Assessment Group, Energy Systems Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA ccanter@anl.gov Y1 - 2016/03// PY - 2016 DA - March 2016 SP - 77 EP - 87 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 9 IS - 1 SN - 1939-1234, 1939-1234 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA) KW - Carbon KW - Life cycle assessment KW - Fuels KW - Ethyl alcohol KW - Corn KW - CHP KW - Grains KW - Ethanol UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780544653?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=BioEnergy+Research&rft.atitle=Policy+Implications+of+Allocation+Methods+in+the+Life+Cycle+Analysis+of+Integrated+Corn+and+Corn+Stover+Ethanol+Production&rft.au=Canter%2C+Christina+E%3BDunn%2C+Jennifer+B%3BHan%2C+Jeongwoo%3BWang%2C+Zhichao%3BWang%2C+Michael&rft.aulast=Canter&rft.aufirst=Christina&rft.date=2016-03-01&rft.volume=9&rft.issue=1&rft.spage=77&rft.isbn=&rft.btitle=&rft.title=BioEnergy+Research&rft.issn=19391234&rft_id=info:doi/10.1007%2Fs12155-015-9664-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Number of references - 34 N1 - Last updated - 2016-06-30 DO - http://dx.doi.org/10.1007/s12155-015-9664-4 ER - TY - JOUR T1 - The direct observation of charge separation dynamics in CdSe quantum dots/cobaloxime hybrids. AN - 1762963630; 26805707 AB - In this work, we investigated photoinduced charge separation dynamics in a CdSe quantum dot/cobaloxime molecular catalyst hybrid using the combination of transient optical (OTA) and X-ray absorption (XTA) spectroscopy. We show that ultrafast charge separation occurs through electron transfer (ET) from CdSe QDs to cobaloxime. In addition to the enhanced 1S exciton bleach recovery in CdSe QDs due to the presence of cobaloxime, the direct evidence for ET process, i.e. the formation of the transient charge separated state, is captured by XTA. These results not only demonstrate the capability of XTA to capture the transient species during the photoinduced reactions in hybrid nanostructures but also enhance our understanding of charge separation dynamics in semiconductor nanocrystal/molecular catalyst hybrid. JF - Physical chemistry chemical physics : PCCP AU - Huang, J AU - Tang, Y AU - Mulfort, K L AU - Zhang, X AD - Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201, USA. jier.huang@marquette.edu. ; X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA. ; Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA. Y1 - 2016/02/14/ PY - 2016 DA - 2016 Feb 14 SP - 4300 EP - 4303 VL - 18 IS - 6 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762963630?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Physical+chemistry+chemical+physics+%3A+PCCP&rft.atitle=The+direct+observation+of+charge+separation+dynamics+in+CdSe+quantum+dots%2Fcobaloxime+hybrids.&rft.au=Huang%2C+J%3BTang%2C+Y%3BMulfort%2C+K+L%3BZhang%2C+X&rft.aulast=Huang&rft.aufirst=J&rft.date=2016-02-14&rft.volume=18&rft.issue=6&rft.spage=4300&rft.isbn=&rft.btitle=&rft.title=Physical+chemistry+chemical+physics+%3A+PCCP&rft.issn=1463-9084&rft_id=info:doi/10.1039%2Fc5cp07611k LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-07-19 N1 - Date created - 2016-02-04 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1039/c5cp07611k ER - TY - JOUR T1 - Seismic parameters of hcp-Fe alloyed with Ni and Si in the Earth's inner core AN - 1840621761; 2016-098642 AB - Iron alloyed with Ni and Si has been suggested to be a major component of the Earth's inner core. High-pressure results on the combined alloying effects of Ni and Si on seismic parameters of iron are thus essential for establishing satisfactory geophysical and geochemical models of the region. Here we have investigated the compressional (V (sub P) ) and shear (Vs) wave velocity-density (rho ) relations, Poisson's ratio (nu ), and seismic heterogeneity ratios (dlnrho /dlnV (sub P) , dlnrho /dlnV (sub S) , and dlnV (sub P) /dlnV (sub S) ) of hcp-Fe and hcp-Fe (sub 86.8) Ni (sub 8.6) Si (sub 4.6) alloy up to 206 GPa and 136 GPa, respectively, using multiple complementary techniques. Compared with the literature velocity values for hcp-Fe and Fe-Ni-Si alloys, our results show that the combined addition of 9.0 wt % Ni and 2.3 wt % Si slightly increases the V (sub P) but significantly decreases the V (sub S) of hcp-Fe at a given density relevant to the inner core. Such distinct alloying effects on velocities of hcp-Fe produce a high nu of about 0.40 for the alloy at inner core densities, which is approximately 20% higher than that for hcp-Fe. Analysis of the literature high P-T results on V (sub P) and V (sub S) of Fe alloyed with light elements shows that high temperature can further enhance the nu of hcp-Fe alloyed with Ni and Si. Most significantly, the derived seismic heterogeneity ratios of this hcp alloy present a better match with global seismic observations. Our results provide a multifactored geophysical constraint on the compositional model of the inner core which is consistent with silicon being a major light element alloyed with Fe and 5 wt % Ni. Abstract Copyright (2016), . American Geophysical Union. All Rights Reserved. JF - Journal of Geophysical Research: Solid Earth AU - Liu, Jin AU - Lin, Jung-Fu AU - Alatas, Ahmet AU - Hu, Michael Y AU - Zhao, Jiyong AU - Dubrovinsky, Leonid Y1 - 2016/02// PY - 2016 DA - February 2016 SP - 610 EP - 623 PB - Wiley-Blackwell for American Geophysical Union, Washington, DC VL - 121 IS - 2 SN - 2169-9313, 2169-9313 KW - P-waves KW - Poisson's ratio KW - density KW - X-ray diffraction data KW - isotopes KW - elastic waves KW - elastic constants KW - silicon KW - stable isotopes KW - iron KW - cores KW - observations KW - velocity KW - alloys KW - inner core KW - heterogeneity KW - P-T conditions KW - body waves KW - experimental studies KW - pressure KW - Fe-57 KW - equations KW - high pressure KW - models KW - metals KW - nickel KW - core KW - seismic waves KW - anvil cells KW - S-waves KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840621761?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Solid+Earth&rft.atitle=Seismic+parameters+of+hcp-Fe+alloyed+with+Ni+and+Si+in+the+Earth%27s+inner+core&rft.au=Liu%2C+Jin%3BLin%2C+Jung-Fu%3BAlatas%2C+Ahmet%3BHu%2C+Michael+Y%3BZhao%2C+Jiyong%3BDubrovinsky%2C+Leonid&rft.aulast=Liu&rft.aufirst=Jin&rft.date=2016-02-01&rft.volume=121&rft.issue=2&rft.spage=610&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Solid+Earth&rft.issn=21699313&rft_id=info:doi/10.1002%2F2015JB012625 L2 - http://agupubs.onlinelibrary.wiley.com/agu/jgr/journal/10.1002/(ISSN)2169-9356/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 62 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2016-11-17 N1 - SubjectsTermNotLitGenreText - alloys; anvil cells; body waves; core; cores; density; elastic constants; elastic waves; equations; experimental studies; Fe-57; heterogeneity; high pressure; inner core; iron; isotopes; metals; models; nickel; observations; P-T conditions; P-waves; Poisson's ratio; pressure; S-waves; seismic waves; silicon; stable isotopes; velocity; X-ray diffraction data DO - http://dx.doi.org/10.1002/2015JB012625 ER - TY - JOUR T1 - Effects of calcium and phosphate on uranium(IV) oxidation; comparison between nanoparticulate uraninite and amorphous U (super IV) phosphate AN - 1793206776; 2016-046618 AB - The mobility of uranium in subsurface environments depends strongly on its redox state, with U (super IV) phases being significantly less soluble than U (super VI) minerals. This study compares the oxidation kinetics and mechanisms of two potential products of U (super VI) reduction in natural systems, a nanoparticulate UO (sub 2) phase and an amorphous U (super IV) -Ca-PO (sub 4) analog to ningyoite (CaU (super IV) (PO (sub 4) ) (sub 2) .1-2H (sub 2) O). The valence of U was tracked by X-ray absorption near-edge spectroscopy (XANES), showing similar oxidation rate constants for U (super IV) O (sub 2) and U (super IV) -phosphate in solutions equilibrated with atmospheric O (sub 2) and CO (sub 2) at pH 7.0 (k (sub obs,UO2) = 0.17 + or - 0.075 h (super -1) vs. k (sub obs,U) (super IV) (sub PO4) = 0.30 + or - 0.25 h (super -1) ). Addition of up to 400 mu M Ca and PO (sub 4) decreased the oxidation rate constant by an order of magnitude for both UO (sub 2) and U (super IV) -phosphate. The intermediates and products of oxidation were tracked by electron microscopy, powder X-ray diffraction (pXRD), and extended X-ray absorption fine-structure spectroscopy (EXAFS). In the absence of Ca or PO (sub 4) , the product of UO (sub 2) oxidation is Na-uranyl oxyhydroxide (under environmentally relevant concentrations of sodium, 15 mM NaClO (sub 4) and low carbonate concentration), resulting in low concentrations of dissolved U (super VI) (<2.5 X 10 (super -7) M). Oxidation of U (super IV) -phosphate produced a Na-autunite phase (Na (sub 2) (UO (sub 2) )PO (sub 4) .xH (sub 2) O), resulting in similarly low dissolved U concentrations (<7.3 X 10 (super -8) M). When Ca and PO (sub 4) are present in the solution, the EXAFS data and the solubility of the U (super VI) phase resulting from oxidation of UO (sub 2) and U (super IV) -phosphate are consistent with the precipitation of Na-autunite. Bicarbonate extractions and Ca K-edge X-ray absorption spectroscopy of oxidized solids indicate the formation of a Ca-U (super VI) -PO (sub 4) layer on the UO (sub 2) surface and suggest a passivation layer mechanism for the decreased rate of UO (sub 2) oxidation in the presence of Ca and PO (sub 4) . Interestingly, the extractions were unable to remove all of the oxidized U from partially oxidized UO (sub 2) solids, suggesting that oxidized U is distributed between the interior of the UO (sub 2) nanoparticles and the labile surface layer. Accounting for the entire pool of oxidized U by XANES is the likely reason for the higher UO (sub 2) oxidation rate constants determined here relative to prior studies. Our results suggest that the natural presence or addition of Ca and PO (sub 4) in groundwater could slow the rates of U (super IV) oxidation, but that the rates are still fast enough to cause complete oxidation of U (super IV) within days under fully oxygenated conditions. Abstract Copyright (2016) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Latta, Drew E AU - Kemner, Kenneth M AU - Mishra, Bhoopesh AU - Boyanov, Maxim I Y1 - 2016/02/01/ PY - 2016 DA - 2016 Feb 01 SP - 122 EP - 142 PB - Elsevier, New York, NY VL - 174 SN - 0016-7037, 0016-7037 KW - hazardous waste KW - calcium KW - X-ray diffraction data KW - isotopes KW - mass spectra KW - power plants KW - radioactive waste KW - XANES spectra KW - radioactive isotopes KW - oxides KW - spectra KW - reduction KW - water pollution KW - kinetics KW - Eh KW - alkaline earth metals KW - toxic materials KW - experimental studies KW - acid mine drainage KW - amorphous materials KW - pollutants KW - oxidation KW - prediction KW - pollution KW - phosphates KW - solubility KW - X-ray spectra KW - models KW - ICP mass spectra KW - soil pollution KW - metals KW - EXAFS data KW - nuclear facilities KW - uranium KW - mobilization KW - waste disposal KW - crystal chemistry KW - uraninite KW - nanoparticles KW - actinides KW - public health KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1793206776?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Effects+of+calcium+and+phosphate+on+uranium%28IV%29+oxidation%3B+comparison+between+nanoparticulate+uraninite+and+amorphous+U+%28super+IV%29+phosphate&rft.au=Latta%2C+Drew+E%3BKemner%2C+Kenneth+M%3BMishra%2C+Bhoopesh%3BBoyanov%2C+Maxim+I&rft.aulast=Latta&rft.aufirst=Drew&rft.date=2016-02-01&rft.volume=174&rft.issue=&rft.spage=122&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2015.11.010 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 67 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-06-02 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - acid mine drainage; actinides; alkaline earth metals; amorphous materials; calcium; crystal chemistry; Eh; EXAFS data; experimental studies; hazardous waste; ICP mass spectra; isotopes; kinetics; mass spectra; metals; mobilization; models; nanoparticles; nuclear facilities; oxidation; oxides; phosphates; pollutants; pollution; power plants; prediction; public health; radioactive isotopes; radioactive waste; reduction; soil pollution; solubility; spectra; toxic materials; uraninite; uranium; waste disposal; water pollution; X-ray diffraction data; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.gca.2015.11.010 ER - TY - JOUR T1 - Differences between Nonprecipitating Tropical and Trade Wind Marine Shallow Cumuli AN - 1790969801; PQ0003081678 AB - Marine nonprecipitating cumulus topped boundary layers (CTBLs) observed in a tropical and in a trade wind region are contrasted based on their cloud macrophysical, dynamical, and radiative structures. Data from the Atmospheric Radiation Measurement (ARM) observational site previously operating at Manus Island, Papua New Guinea, and data collected during the deployment of ARM Mobile Facility at the island of Graciosa, in the Azores, were used in this study. The tropical marine CTBLs were deeper, had higher surface fluxes and boundary layer radiative cooling, but lower wind speeds compared to their trade wind counterparts. The radiative velocity scale was 50%-70% of the surface convective velocity scale at both locations, highlighting the prominent role played by radiation in maintaining turbulence in marine CTBLs. Despite greater thicknesses, the chord lengths of tropical cumuli were on average lower than those of trade wind cumuli, and as a result of lower cloud cover, the hourly averaged (cloudy and clear) liquid water paths of tropical cumuli were lower than the trade wind cumuli. At both locations ~70% of the cloudy profiles were updrafts, while the average amount of updrafts near cloud base stronger than 1 m s super(-1) was ~22% in tropical cumuli and ~12% in the trade wind cumuli. The mean in-cloud radar reflectivity within updrafts and mean updraft velocity was higher in tropical cumuli than the trade wind cumuli. Despite stronger vertical velocities and a higher number of strong updrafts, due to lower cloud fraction, the updraft mass flux was lower in the tropical cumuli compared to the trade wind cumuli. The observations suggest that the tropical and trade wind marine cumulus clouds differ significantly in their macrophysical and dynamical structures. JF - Monthly Weather Review AU - Ghate, Virendra P AU - Miller, Mark A AU - Zhu, Ping AD - Environmental Science Division, Argonne National Laboratory, Argonne, Illinois Y1 - 2016/02// PY - 2016 DA - February 2016 SP - 681 EP - 701 PB - American Meteorological Society, 45 Beacon St. Boston MA 02108-3693 United States VL - 144 IS - 2 SN - 0027-0644, 0027-0644 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Atm/Ocean Structure/ Phenomena KW - Boundary layer KW - Cumulus clouds KW - Physical Meteorology and Climatology KW - Cloud radiative effects KW - Clouds KW - Trade winds KW - Reflectance KW - Boundary Layers KW - turbulence KW - Updrafts KW - Mass flux KW - Wind speed KW - ISEW, Papua New Guinea, Bismarck Archipelago, Admiralty Is., Manus I. KW - Radar reflectivity KW - Radiation KW - Papua New Guinea KW - Surface fluxes KW - Vertical velocities KW - Wind KW - Weather KW - Atmospheric radiation measurements KW - Velocity KW - Cloud cover KW - ANE, Atlantic, Azores KW - Boundary layers KW - Tropical environment KW - Convective activity KW - Radar KW - Downward long wave radiation KW - Fluctuations KW - M2 551.521:Radiation (551.521) KW - SW 0810:General KW - Q2 09244:Air-sea coupling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790969801?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Monthly+Weather+Review&rft.atitle=Differences+between+Nonprecipitating+Tropical+and+Trade+Wind+Marine+Shallow+Cumuli&rft.au=Ghate%2C+Virendra+P%3BMiller%2C+Mark+A%3BZhu%2C+Ping&rft.aulast=Ghate&rft.aufirst=Virendra&rft.date=2016-02-01&rft.volume=144&rft.issue=2&rft.spage=681&rft.isbn=&rft.btitle=&rft.title=Monthly+Weather+Review&rft.issn=00270644&rft_id=info:doi/10.1175%2FMWR-D-15-0110.1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 52 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Wind speed; Clouds; Trade winds; Reflectance; Radiation; Tropical environment; Boundary layers; Radar; Downward long wave radiation; Radar reflectivity; Atmospheric radiation measurements; Convective activity; Surface fluxes; Vertical velocities; Cloud cover; Mass flux; Updrafts; Cumulus clouds; Weather; Boundary Layers; Velocity; turbulence; Fluctuations; Wind; ISEW, Papua New Guinea, Bismarck Archipelago, Admiralty Is., Manus I.; ANE, Atlantic, Azores; Papua New Guinea DO - http://dx.doi.org/10.1175/MWR-D-15-0110.1 ER - TY - JOUR T1 - Optimizing multi-step B-side charge separation in photosynthetic reaction centers from Rhodobacter capsulatus. AN - 1760884800; 26658355 AB - Using high-throughput methods for mutagenesis, protein isolation and charge-separation functionality, we have assayed 40 Rhodobacter capsulatus reaction center (RC) mutants for their P(+)QB(-) yield (P is a dimer of bacteriochlorophylls and Q is a ubiquinone) as produced using the normally inactive B-side cofactors BB and HB (where B is a bacteriochlorophyll and H is a bacteriopheophytin). Two sets of mutants explore all possible residues at M131 (M polypeptide, native residue Val near HB) in tandem with either a fixed His or a fixed Asn at L181 (L polypeptide, native residue Phe near BB). A third set of mutants explores all possible residues at L181 with a fixed Glu at M131 that can form a hydrogen bond to HB. For each set of mutants, the results of a rapid millisecond screening assay that probes the yield of P(+)QB(-) are compared among that set and to the other mutants reported here or previously. For a subset of eight mutants, the rate constants and yields of the individual B-side electron transfer processes are determined via transient absorption measurements spanning 100 fs to 50 μs. The resulting ranking of mutants for their yield of P(+)QB(-) from ultrafast experiments is in good agreement with that obtained from the millisecond screening assay, further validating the efficient, high-throughput screen for B-side transmembrane charge separation. Results from mutants that individually show progress toward optimization of P(+)HB(-)→P(+)QB(-) electron transfer or initial P*→P(+)HB(-) conversion highlight unmet challenges of optimizing both processes simultaneously. JF - Biochimica et biophysica acta AU - Faries, Kaitlyn M AU - Kressel, Lucas L AU - Dylla, Nicholas P AU - Wander, Marc J AU - Hanson, Deborah K AU - Holten, Dewey AU - Laible, Philip D AU - Kirmaier, Christine AD - Department of Chemistry, Washington University, St. Louis, MO 63130, United States. ; Biosciences Division, Argonne National Laboratory, Argonne, IL 60439, United States. ; Department of Chemistry, Washington University, St. Louis, MO 63130, United States. Electronic address: kirmaier@wustl.edu. Y1 - 2016/02// PY - 2016 DA - February 2016 SP - 150 EP - 159 VL - 1857 IS - 2 SN - 0006-3002, 0006-3002 KW - Bacteriochlorophylls KW - 0 KW - Light-Harvesting Protein Complexes KW - Pheophytins KW - Ubiquinone KW - 1339-63-5 KW - bacteriopheophytin KW - 17453-58-6 KW - Index Medicus KW - Picosecond KW - Asymmetry KW - Directionality KW - Charge recombination KW - Saturation mutagenesis KW - Membrane KW - Static Electricity KW - Electron Transport KW - Amino Acid Motifs KW - Models, Molecular KW - Kinetics KW - Molecular Sequence Data KW - Gene Expression KW - Light KW - Mutation KW - Hydrogen Bonding KW - Structure-Activity Relationship KW - Mutagenesis KW - Light-Harvesting Protein Complexes -- genetics KW - Light-Harvesting Protein Complexes -- chemistry KW - Bacteriochlorophylls -- metabolism KW - Pheophytins -- metabolism KW - Rhodobacter capsulatus -- genetics KW - Light-Harvesting Protein Complexes -- metabolism KW - Rhodobacter capsulatus -- radiation effects KW - Rhodobacter capsulatus -- metabolism KW - Ubiquinone -- metabolism KW - Photosynthesis -- radiation effects KW - Pheophytins -- chemistry KW - Ubiquinone -- chemistry KW - Bacteriochlorophylls -- chemistry KW - Photosynthesis -- physiology KW - Rhodobacter capsulatus -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1760884800?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biochimica+et+biophysica+acta&rft.atitle=Optimizing+multi-step+B-side+charge+separation+in+photosynthetic+reaction+centers+from+Rhodobacter+capsulatus.&rft.au=Faries%2C+Kaitlyn+M%3BKressel%2C+Lucas+L%3BDylla%2C+Nicholas+P%3BWander%2C+Marc+J%3BHanson%2C+Deborah+K%3BHolten%2C+Dewey%3BLaible%2C+Philip+D%3BKirmaier%2C+Christine&rft.aulast=Faries&rft.aufirst=Kaitlyn&rft.date=2016-02-01&rft.volume=1857&rft.issue=2&rft.spage=150&rft.isbn=&rft.btitle=&rft.title=Biochimica+et+biophysica+acta&rft.issn=00063002&rft_id=info:doi/10.1016%2Fj.bbabio.2015.11.013 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-04-28 N1 - Date created - 2016-01-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.bbabio.2015.11.013 ER - TY - JOUR T1 - Atomistic Insights into the Oriented Attachment of Tunnel-Based Oxide Nanostructures. AN - 1760925377; 26649473 AB - Controlled synthesis of nanomaterials is one of the grand challenges facing materials scientists. In particular, how tunnel-based nanomaterials aggregate during synthesis while maintaining their well-aligned tunneled structure is not fully understood. Here, we describe the atomistic mechanism of oriented attachment (OA) during solution synthesis of tunneled α-MnO2 nanowires based on a combination of in situ liquid cell transmission electron microscopy (TEM), aberration-corrected scanning TEM with subangstrom spatial resolution, and first-principles calculations. It is found that primary tunnels (1 × 1 and 2 × 2) attach along their common {110} lateral surfaces to form interfaces corresponding to 2 × 3 tunnels that facilitate their short-range ordering. The OA growth of α-MnO2 nanowires is driven by the stability gained from elimination of {110} surfaces and saturation of Mn atoms at {110}-edges. During this process, extra [MnOx] radicals in solution link the two adjacent {110} surfaces and bond with the unsaturated Mn atoms from both surface edges to produce stable nanowire interfaces. Our results provide insights into the controlled synthesis and design of nanomaterials in which tunneled structures can be tailored for use in catalysis, ion exchange, and energy storage applications. JF - ACS nano AU - Yuan, Yifei AU - Wood, Stephen M AU - He, Kun AU - Yao, Wentao AU - Tompsett, David AU - Lu, Jun AU - Nie, Anmin AU - Islam, M Saiful AU - Shahbazian-Yassar, Reza AD - Department of Materials Science and Engineering, Michigan Technological University , 1400 Townsend Drive, Houghton, Michigan 49931, United States. ; Department of Chemistry, University of Bath , Bath BA2 7AY, United Kingdom. ; Department of Mechanical Engineering, Michigan Technological University , 1400 Townsend Drive, Houghton, Michigan 49931, United States. ; Chemical Science and Engineering Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. Y1 - 2016/01/26/ PY - 2016 DA - 2016 Jan 26 SP - 539 EP - 548 VL - 10 IS - 1 KW - oriented attachment KW - nanowire KW - interface KW - tunnel KW - surface structure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1760925377?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+nano&rft.atitle=Atomistic+Insights+into+the+Oriented+Attachment+of+Tunnel-Based+Oxide+Nanostructures.&rft.au=Yuan%2C+Yifei%3BWood%2C+Stephen+M%3BHe%2C+Kun%3BYao%2C+Wentao%3BTompsett%2C+David%3BLu%2C+Jun%3BNie%2C+Anmin%3BIslam%2C+M+Saiful%3BShahbazian-Yassar%2C+Reza&rft.aulast=Yuan&rft.aufirst=Yifei&rft.date=2016-01-26&rft.volume=10&rft.issue=1&rft.spage=539&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Facsnano.5b05535 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-27 N1 - Date created - 2016-01-26 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsnano.5b05535 ER - TY - JOUR T1 - Tunable Affinity and Molecular Architecture Lead to Diverse Self-Assembled Supramolecular Structures in Thin Films. AN - 1760925207; 26623661 AB - The self-assembly behavior of specifically designed giant surfactants is systematically studied in thin films using grazing incidence X-ray scattering and transmission electron microscopy, focusing on the effects of molecular nanoparticle (MNP) functionalities and molecular architectures on nanostructure formation. Two MNPs with different surface functionalities, i.e., hydrophilic carboxylic acid functionalized [60]fullerene (AC60) and omniphobic fluorinated polyhedral oligomeric silsesquioxane (FPOSS), are utilized as the head portions of the giant surfactants. By covalently tethering these functional MNPs onto the end point or junction point of polystyrene-block-poly(ethylene oxide) (PS-b-PEO) diblock copolymer, linear and star-like giant surfactants with different molecular architectures are constructed. With fixed length of the PEO block, changing the molecular weight of the PS block leads to the formation of various ordered phases and phase transitions. Due to the distinct affinity, the AC60-based and FPOSS-based giant surfactants form two- or three-component morphologies, respectively. A stretching parameter for the PS block is introduced to characterize the PS chain conformation in the different morphologies. The highly diverse self-assembled nanostructures with high etch resistance between components in small dimensions obtained from the giant surfactant thin films suggest that these macromolecules could provide a promising and robust platform for nanolithography applications. JF - ACS nano AU - Hsu, Chih-Hao AU - Dong, Xue-Hui AU - Lin, Zhiwei AU - Ni, Bo AU - Lu, Pengtao AU - Jiang, Zhang AU - Tian, Ding AU - Shi, An-Chang AU - Thomas, Edwin L AU - Cheng, Stephen Z D AD - Department of Polymer Science, College of Polymer Science and Polymer Engineering, The University of Akron , Akron, Ohio 44325, United States. ; X-ray Science Division, Advanced Photon Source, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; Department of Physics and Astronomy, McMaster University , Hamilton, Ontario, Canada , L8S 4M1. ; Department of Materials Science and Nano Engineering and Department of Chemical and Biomolecular Engineering, Brown School of Engineering, Rice University , Houston, Texas 77251, United States. Y1 - 2016/01/26/ PY - 2016 DA - 2016 Jan 26 SP - 919 EP - 929 VL - 10 IS - 1 KW - self-assembly KW - thin film KW - molecular architecture KW - nanoparticles KW - surface functionality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1760925207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+nano&rft.atitle=Tunable+Affinity+and+Molecular+Architecture+Lead+to+Diverse+Self-Assembled+Supramolecular+Structures+in+Thin+Films.&rft.au=Hsu%2C+Chih-Hao%3BDong%2C+Xue-Hui%3BLin%2C+Zhiwei%3BNi%2C+Bo%3BLu%2C+Pengtao%3BJiang%2C+Zhang%3BTian%2C+Ding%3BShi%2C+An-Chang%3BThomas%2C+Edwin+L%3BCheng%2C+Stephen+Z+D&rft.aulast=Hsu&rft.aufirst=Chih-Hao&rft.date=2016-01-26&rft.volume=10&rft.issue=1&rft.spage=919&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Facsnano.5b06038 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-27 N1 - Date created - 2016-01-26 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsnano.5b06038 ER - TY - JOUR T1 - Development characteristics of polymethyl methacrylate in alcohol/water mixtures: a lithography and Raman spectroscopy study. AN - 1760912868; 26656030 AB - Poly methyl methacrylate (PMMA) is the most widely used resist in electron beam lithography. This paper reports on a lithography and Raman spectroscopy study of development characteristics of PMMA in methanol, ethanol and isopropanol mixtures with water as developers. We have found that ethanol/water mixtures at a 4:1 volume ratio are an excellent, high resolution, non-toxic developer for exposed PMMA. We have also found that the proper methodology to use so that contrast data can be compared to techniques used in polymer science is not to rinse the developed resist but to immediately dry with nitrogen. Our results show how powerful simple lithographic techniques can be used to study ternary polymer solvent solutions when compared to other techniques used in the literature. Raman data show that both tightly bonded -OH groups and non-hydrogen bonded -OH groups play a role in the development of PMMA. Tightly hydrogen bonded -OH groups show pure Lorentzian Raman absorption only in the concentration ranges where ethanol/water and IPA/water mixtures are effective developers of PMMA, pointing to possible ordering or reduced amorphization due to the liquid state. The impact of understanding these interactions may open doors to a new developers of other electron beam resists that can reduce the toxicity of the waste stream. JF - Nanotechnology AU - Ocola, Leonidas E AU - Costales, Maya AU - Gosztola, David J AD - Nanoscience and Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA. Y1 - 2016/01/22/ PY - 2016 DA - 2016 Jan 22 SP - 035302 VL - 27 IS - 3 KW - Alcohols KW - 0 KW - Hydroxides KW - Water KW - 059QF0KO0R KW - Polymethyl Methacrylate KW - 9011-14-7 KW - hydroxide ion KW - 9159UV381P KW - Index Medicus KW - Hydroxides -- chemistry KW - Water -- chemistry KW - Polymethyl Methacrylate -- chemistry KW - Alcohols -- chemistry KW - Spectrum Analysis, Raman -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1760912868?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nanotechnology&rft.atitle=Development+characteristics+of+polymethyl+methacrylate+in+alcohol%2Fwater+mixtures%3A+a+lithography+and+Raman+spectroscopy+study.&rft.au=Ocola%2C+Leonidas+E%3BCostales%2C+Maya%3BGosztola%2C+David+J&rft.aulast=Ocola&rft.aufirst=Leonidas&rft.date=2016-01-22&rft.volume=27&rft.issue=3&rft.spage=035302&rft.isbn=&rft.btitle=&rft.title=Nanotechnology&rft.issn=1361-6528&rft_id=info:doi/10.1088%2F0957-4484%2F27%2F3%2F035302 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-09-02 N1 - Date created - 2016-01-22 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1088/0957-4484/27/3/035302 ER - TY - JOUR T1 - Insight into the Catalytic Mechanism of Bimetallic Platinum-Copper Core-Shell Nanostructures for Nonaqueous Oxygen Evolution Reactions. AN - 1760860725; 26709945 AB - The oxygen evolution reaction (OER) plays a critical role in multiple energy conversion and storage applications. However, its sluggish kinetics usually results in large voltage polarization and unnecessary energy loss. Therefore, designing efficient catalysts that could facilitate this process has become an emerging topic. Here, we present a unique Pt-Cu core-shell nanostructure for catalyzing the nonaqueous OER. The catalysts were systematically investigated with comprehensive spectroscopic techniques, and applied in nonaqueous Li-O2 electrochemical cells, which exhibited dramatically reduced charging overpotential (<0.2 V). The superior performance is explained by the robust Cu(I) surface sites stabilized by the Pt core in the nanostructure. The insights into the catalytic mechanism of the unique Pt-Cu core-shell nanostructure gained in this work are expected to serve as a guide for future design of other nanostructured bimetallic OER catalysts. JF - Nano letters AU - Ma, Lu AU - Luo, Xiangyi AU - Kropf, A Jeremy AU - Wen, Jianguo AU - Wang, Xiaoping AU - Lee, Sungsik AU - Myers, Deborah J AU - Miller, Dean AU - Wu, Tianpin AU - Lu, Jun AU - Amine, Khalil AD - X-ray Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; Material Science Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; Chemical Sciences and Engineering Division, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; Electron Microscopy Center - Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States. Y1 - 2016/01/13/ PY - 2016 DA - 2016 Jan 13 SP - 781 EP - 785 VL - 16 IS - 1 KW - bimetallic catalysts KW - X-ray absorption spectroscopy KW - oxygen evolution reaction KW - alloys KW - nanostructures UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1760860725?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Insight+into+the+Catalytic+Mechanism+of+Bimetallic+Platinum-Copper+Core-Shell+Nanostructures+for+Nonaqueous+Oxygen+Evolution+Reactions.&rft.au=Ma%2C+Lu%3BLuo%2C+Xiangyi%3BKropf%2C+A+Jeremy%3BWen%2C+Jianguo%3BWang%2C+Xiaoping%3BLee%2C+Sungsik%3BMyers%2C+Deborah+J%3BMiller%2C+Dean%3BWu%2C+Tianpin%3BLu%2C+Jun%3BAmine%2C+Khalil&rft.aulast=Ma&rft.aufirst=Lu&rft.date=2016-01-13&rft.volume=16&rft.issue=1&rft.spage=781&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b04794 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-06-13 N1 - Date created - 2016-01-13 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b04794 ER - TY - JOUR T1 - Epitaxial patterning of nanometer-thick Y3Fe5O12 films with low magnetic damping. AN - 1750428711; 26616641 AB - Magnetic insulators such as yttrium iron garnet, Y3Fe5O12, with extremely low magnetic damping have opened the door for low power spin-orbitronics due to their low energy dissipation and efficient spin current generation and transmission. We demonstrate here reliable and efficient epitaxial growth and nanopatterning of Y3Fe5O12 thin-film based nanostructures on insulating Gd3Ga5O12 substrates. In particular, our fabrication process is compatible with conventional sputtering and lift-off, and does not require aggressive ion milling which may be detrimental to the oxide thin films. Their structural and magnetic properties indicate good qualities, in particular low magnetic damping of both films and patterned structures. The dynamic magnetic properties of the nanostructures are systematically investigated as a function of the lateral dimension. By comparing with ferromagnetic nanowire structures, a distinct edge mode in addition to the main mode is identified by both experiments and simulations, which also exhibit cross-over with the main mode upon varying the width of the wires. The non-linear evolution of dynamic modes over nanostructural dimensions highlights the important role of size confinement to their material properties in magnetic devices where Y3Fe5O12 nanostructures serve as the key functional component. JF - Nanoscale AU - Li, Shaozhen AU - Zhang, Wei AU - Ding, Junjia AU - Pearson, John E AU - Novosad, Valentine AU - Hoffmann, Axel AD - Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA and School of Physics and Institute for Quantum Materials, Hubei Polytechnic University, Huangshi 435003, P. R. China. shaozhenli@yahoo.com. ; Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA. Y1 - 2016/01/07/ PY - 2016 DA - 2016 Jan 07 SP - 388 EP - 394 VL - 8 IS - 1 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1750428711?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nanoscale&rft.atitle=Epitaxial+patterning+of+nanometer-thick+Y3Fe5O12+films+with+low+magnetic+damping.&rft.au=Li%2C+Shaozhen%3BZhang%2C+Wei%3BDing%2C+Junjia%3BPearson%2C+John+E%3BNovosad%2C+Valentine%3BHoffmann%2C+Axel&rft.aulast=Li&rft.aufirst=Shaozhen&rft.date=2016-01-07&rft.volume=8&rft.issue=1&rft.spage=388&rft.isbn=&rft.btitle=&rft.title=Nanoscale&rft.issn=2040-3372&rft_id=info:doi/10.1039%2Fc5nr06808h LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-11 N1 - Date created - 2015-12-17 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1039/c5nr06808h ER - TY - JOUR T1 - The influence of dehydration and gut biota on preservation in amber AN - 1873350633; 2017-014085 AB - The quality of preservation of insect inclusions in amber is highly variable, ranging from the retention of high fidelity anatomical details of soft tissues through to empty molds of cuticle. What controls this variation is not understood, and consequently biases in the amber record of fossil insects cannot be assessed. Here we use actualistic taphonomic experiments to test the influence of dehydration and gut biota on fossilization in amber. Fruit flies (Drosophila melanogaster) were embedded in resin from a Wollemi pine (Wollemia nobilis) for 14 days after which external and internal morphological decay was assessed through phase-contrast synchrotron tomography. We tested three states of dehydration: entombed without dehydration; partially embedded in resin, dried for three days at 50 degrees C, and then covered in more resin; and dried in air for three days at 50 degrees C prior to complete entombment. In addition we tested the role of gut microbiota through using fruit flies with "wild-type" microbiota, and antibiotic-treated fruit flies, with a severely reduced gut biota. We ran six replicates of each of the treatment groups. Synchrotron tomographic analyses revealed that dehydrated flies (both groups) were better preserved than fresh flies. Dehydration has been previously proposed as a mechanism of exceptional preservation in amber, and our results support this. Dehydration inhibits bacterial decay, therefore enhancing preservation. However, counterintuitively, flies with the wild-type gut biota were better preserved than flies treated with antibiotics to reduce their gut microbiota. This suggests that the antibiotic treatment, which ceased when the flies died, did not completely eradicate the gut biota. After death, any remnant bacterial populations quickly rebounded and decayed the fly. The rebound population may have been composed of different bacteria than the wild-type population, which could explain the enhanced decay rate. The variations in preservation we observed in these experiments matches some (although not all) of the variation seen in fossils in amber, suggesting that these experiments do replicate pathways of fossilization in amber and that dehydration and the composition of the gut biota are both important controls on the process of fossilization in amber. JF - Abstracts with Programs - Geological Society of America AU - McCoy, Victoria E AU - Soriano, Carmen AU - Pegoraro, Mirko AU - Gabbott, Sarah E AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - Abstract no. 218 EP - 5 PB - Geological Society of America (GSA), Boulder, CO VL - 48 IS - 7 SN - 0016-7592, 0016-7592 KW - 10:Invertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1873350633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+influence+of+dehydration+and+gut+biota+on+preservation+in+amber&rft.au=McCoy%2C+Victoria+E%3BSoriano%2C+Carmen%3BPegoraro%2C+Mirko%3BGabbott%2C+Sarah+E%3BAnonymous&rft.aulast=McCoy&rft.aufirst=Victoria&rft.date=2016-01-01&rft.volume=48&rft.issue=7&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2016 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2017-01-01 N1 - PubXState - CO N1 - Last updated - 2017-03-02 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Investigations into the degassing of Nyamuragira Volcano (D.R. Congo, Africa) through synchrotron micro-xanes analysis AN - 1873350513; 2017-013700 AB - Nyamuragira volcano (D.R. Congo, Africa) is located in the western branch of the East African Rift, erupts frequently (every approximately 2 years), and produces large amounts of SO (sub 2) . When comparing its eruptions, magmatic gas content and explosivity vary, sometimes greatly. The driving mechanisms that account for these differences are not well understood, but potential variability in both magmatic redox (fO (sub 2) ) and degassing history are likely important parameters controlling these processes. To constrain the impact of these effects, we analyzed more than 50 MI from different Nyamuragira eruptions by microfocused X-ray absorption near edge structure spectroscopy (mu XANES). Iron and vanadium valence state mu XANES were used to constrain melt fO (sub 2) and sulfur mu XANES for evaluating differences in S speciation. Nyamuragira samples investigated in this study were from the 1912, 1986, and 2006 eruptions. Magmatic S concentrations measured in melt inclusions (MI) were highest in the 1912 sample (3700 ppm), while the 1986 and 2006 MI samples contained similar S concentrations ( approximately 2000 ppm). Our mu XANES studies show that there are systematic differences in melt fO (sub 2) and S speciation in glasses from the 1986 eruption compared with those from 1912 and 2006. Fe and V data indicate that all samples are reduced with fO (sub 2) ranging from QFM+1 to -1, but the 1986 data are at the lower end of this range, while showing higher and more variable sulfate abundance than the 1912 and 2006. We believe that these differences can be attributed to S degassing in the 1986 magmas. Entrapment pressures determined from MI H (sub 2) O and CO (sub 2) data, paired with S data, show variability in S degassing with storage for each eruption; the 1986 magma degassed more strongly with ascent than the 2006 magma prior to eruption, which could explain a reduction of Fe species and an oxidation of S due to electron exchanges. The results also demonstrate the sensitivity of the V redox oxybarometer for measuring the redox evolution of alkalic melt inclusions. JF - Abstracts with Programs - Geological Society of America AU - Head, Elisabet AU - Lanzirotti, Antonio AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - Abstract no. 89 EP - 3 PB - Geological Society of America (GSA), Boulder, CO VL - 48 IS - 7 SN - 0016-7592, 0016-7592 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1873350513?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Investigations+into+the+degassing+of+Nyamuragira+Volcano+%28D.R.+Congo%2C+Africa%29+through+synchrotron+micro-xanes+analysis&rft.au=Head%2C+Elisabet%3BLanzirotti%2C+Antonio%3BAnonymous&rft.aulast=Head&rft.aufirst=Elisabet&rft.date=2016-01-01&rft.volume=48&rft.issue=7&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2016 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2017-01-01 N1 - PubXState - CO N1 - Last updated - 2017-03-02 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Soft tissue preservation in Paleozoic ophiuroids; novel insights through 3D imaging AN - 1863567437; 2017-007632 AB - Ophiuroids, commonly known as brittle stars, have evolved a complex and effective form of locomotion. They execute periodic coordinated arm motions with powerful musculature and complex joint articulations to facilitate quick and agile movement, making them the most motile class of echinoderms. However, little is known about the evolutionary steps that led to this unique form of locomotion during their divergence from comparatively slow-moving relatives. Although many stem ophiuroid taxa have been identified from as early as the Ordovician, the arm morphology of modern ophiuroids did not evolve until the Late Paleozoic. The morphology of stem ophiuroids is fundamentally disparate compared to the crown, and the functional capabilities of Paleozoic arm morphologies are essentially unknown. It is imperative to analyze how fossil ophiuroid taxa moved in order to elucidate the evolutionary steps that produced the derived locomotion strategy of modern ophiuroids. In order to do this, the first step is to determine the anatomy of the primary soft tissue involved in echinoderm locomotion in fossilized taxa. Here we present novel insights into Paleozoic ophiuroid soft tissue morphology, both of the water vascular system and muscle, based on micro-CT scans and synchrotron tomography of fossil specimens. The water vascular system of a pyritized specimen of Protasterina flexuosa from the Kope Formation of the Upper Ordovician of Kentucky, USA was revealed via a micro-CT scan. This is the first report of 3D preservation of the internal structure of the water vascular system in a fossil ophiuroid. Musculature of the ophiuroid arm was determined based on the stereom structure of isolated ambulacral ossicles from an unidentified stenurid ophiuroid from the Tournaisian, Lower Carboniferous of Tournai, Belgium imaged using synchrotron tomography at the Advanced Photon Source (Chicago). These insights further our understanding of the Paleozoic ophiuroid bauplan, allowing greater understanding of the evolution of the ophiuroid lineage both in terms of anatomy and functional morphology. JF - Abstracts with Programs - Geological Society of America AU - Clark, Elizabeth G AU - Prangley, Madeleine S AU - Thuy, Ben AU - Darroch, Simon A F AU - Soriano, Carmen AU - Briggs, Derek E G AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - Abstract no. 163 EP - 3 PB - Geological Society of America (GSA), Boulder, CO VL - 48 IS - 7 SN - 0016-7592, 0016-7592 KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1863567437?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Soft+tissue+preservation+in+Paleozoic+ophiuroids%3B+novel+insights+through+3D+imaging&rft.au=Clark%2C+Elizabeth+G%3BPrangley%2C+Madeleine+S%3BThuy%2C+Ben%3BDarroch%2C+Simon+A+F%3BSoriano%2C+Carmen%3BBriggs%2C+Derek+E+G%3BAnonymous&rft.aulast=Clark&rft.aufirst=Elizabeth&rft.date=2016-01-01&rft.volume=48&rft.issue=7&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2016 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2017-01-01 N1 - PubXState - CO N1 - Last updated - 2017-02-02 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - New Limit on Anthropogenic Sources of Atmospheric 81Kr using Atom Trap Trace Analysis AN - 1861113050; 782782-53 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Zappala, C AU - Bailey, K AU - Mueller, P AU - O'Connor, T P AU - Purtschert, R AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 3653 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861113050?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=New+Limit+on+Anthropogenic+Sources+of+Atmospheric+81Kr+using+Atom+Trap+Trace+Analysis&rft.au=Zappala%2C+C%3BBailey%2C+K%3BMueller%2C+P%3BO%27Connor%2C+T+P%3BPurtschert%2C+R%3BAnonymous&rft.aulast=Zappala&rft.aufirst=C&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=3653&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/3653.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - U(VI) Reduction by Biotic and Abiotic Green Rusts AN - 1861112433; 782781-42 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Yan AU - Boyanov, M I AU - Mishra, B AU - Kemner, K M AU - O'Loughlin, E J AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 3542 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861112433?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=U%28VI%29+Reduction+by+Biotic+and+Abiotic+Green+Rusts&rft.au=Yan%3BBoyanov%2C+M+I%3BMishra%2C+B%3BKemner%2C+K+M%3BO%27Loughlin%2C+E+J%3BAnonymous&rft.aulast=Yan&rft.aufirst=&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=3542&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/3542.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - Erosion rate study at the Allchar deposit (Macedonia) based on radioactive and stable cosmogenic nuclides (26 Al, 36Cl, 3He, and 21Ne). AN - 1861090897; 782770-48 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Pavicevic, M K AU - Cvetkovic, V AU - Niedermann, S AU - Pejovic, V AU - Amthauer, G AU - Boev, B AU - Bosch, B AU - Anicin, I AU - Henning, W F AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 2448 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861090897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Erosion+rate+study+at+the+Allchar+deposit+%28Macedonia%29+based+on+radioactive+and+stable+cosmogenic+nuclides+%2826+Al%2C+36Cl%2C+3He%2C+and+21Ne%29.&rft.au=Pavicevic%2C+M+K%3BCvetkovic%2C+V%3BNiedermann%2C+S%3BPejovic%2C+V%3BAmthauer%2C+G%3BBoev%2C+B%3BBosch%2C+B%3BAnicin%2C+I%3BHenning%2C+W+F%3BAnonymous&rft.aulast=Pavicevic&rft.aufirst=M&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=2448&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/2448.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - Iron equilibrium fractionation factors from ab initio, NRIXS, and lab experiments; the path forward AN - 1849308047; 2016-110611 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Dauphas, Nicolas AU - Roskosz, Mathieu AU - Blanchard, Marc AU - Alp, E Ercan AU - Hu, Michael AU - Baptiste, Benoit AU - Morin, Guillaume AU - Zhao, Jiyong AU - Hu, Justin AU - Tissot, Francois L H AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 609 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 KW - experimental studies KW - isotopes KW - geothite KW - ab initio KW - iron KW - laboratory studies KW - siderite KW - hematite KW - metals KW - oxides KW - pyrite KW - crystal chemistry KW - sulfides KW - carbonates KW - synthetic materials KW - minerals KW - chemical fractionation KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849308047?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Iron+equilibrium+fractionation+factors+from+ab+initio%2C+NRIXS%2C+and+lab+experiments%3B+the+path+forward&rft.au=Dauphas%2C+Nicolas%3BRoskosz%2C+Mathieu%3BBlanchard%2C+Marc%3BAlp%2C+E+Ercan%3BHu%2C+Michael%3BBaptiste%2C+Benoit%3BMorin%2C+Guillaume%3BZhao%2C+Jiyong%3BHu%2C+Justin%3BTissot%2C+Francois+L+H%3BAnonymous&rft.aulast=Dauphas&rft.aufirst=Nicolas&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=609&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/609.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 4 N1 - Last updated - 2016-12-16 N1 - SubjectsTermNotLitGenreText - ab initio; carbonates; chemical fractionation; crystal chemistry; experimental studies; geothite; hematite; iron; isotopes; laboratory studies; metals; minerals; oxides; pyrite; siderite; sulfides; synthetic materials ER - TY - JOUR T1 - Attachment on the rocks: the adhesion system of Anomia AN - 1832687356; 782748-37 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Birkedal, Henrik AU - FrOlich, Simon AU - Leemreize, Hanna AU - Tseng, Yao Hung AU - Stock, Stuart R AU - Kenesei, Peter AU - Almer, Jonathan D AU - Hesse, Bernhard AU - Waite, J Herbert AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 237 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832687356?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Attachment+on+the+rocks%3A+the+adhesion+system+of+Anomia&rft.au=Birkedal%2C+Henrik%3BFrOlich%2C+Simon%3BLeemreize%2C+Hanna%3BTseng%2C+Yao+Hung%3BStock%2C+Stuart+R%3BKenesei%2C+Peter%3BAlmer%2C+Jonathan+D%3BHesse%2C+Bernhard%3BWaite%2C+J+Herbert%3BAnonymous&rft.aulast=Birkedal&rft.aufirst=Henrik&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=237&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/237.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - FIELD DEGASSING AS A NEW SAMPLING METHOD FOR 14C ANALYSES IN GROUNDWATER AN - 1832685853; 782748-19 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Bernier, R AU - Yokochi, R AU - Yechieli, Y AU - Purtschert, R AU - Adar, E AU - Jiang, W AU - Lu, Z T AU - Mueller, P AU - Ram, R AU - Zappala, J AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 219 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832685853?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=FIELD+DEGASSING+AS+A+NEW+SAMPLING+METHOD+FOR+14C+ANALYSES+IN+GROUNDWATER&rft.au=Bernier%2C+R%3BYokochi%2C+R%3BYechieli%2C+Y%3BPurtschert%2C+R%3BAdar%2C+E%3BJiang%2C+W%3BLu%2C+Z+T%3BMueller%2C+P%3BRam%2C+R%3BZappala%2C+J%3BAnonymous&rft.aulast=Bernier&rft.aufirst=R&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=219&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/219.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. 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N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - The role of differentiation processes in mare basalt iron isotope signatures AN - 1832660311; 777410-71 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Williams, K B AU - Krawczynski, M J AU - Nie, N X AU - Dauphas, N AU - Couvy, H AU - Hu, M Y AU - Alp, E E AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 EP - Abstract no. 2779 PB - Lunar and Planetary Science Conference, Houston, TX VL - 47 KW - silicates KW - ilmenite KW - nuclear resonant inelastic X-ray scattering KW - magmatic differentiation KW - isotope fractionation KW - volcanic rocks KW - glasses KW - isotopes KW - igneous rocks KW - olivine group KW - stable isotopes KW - iron KW - temperature KW - partitioning KW - olivine KW - basalts KW - orthosilicates KW - oxides KW - spectra KW - synthetic materials KW - Moon KW - isotope ratios KW - X-ray spectra KW - NRIXS spectra KW - nesosilicates KW - titanium KW - metals KW - mare basalts KW - Fe-56/Fe-54 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832660311?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=The+role+of+differentiation+processes+in+mare+basalt+iron+isotope+signatures&rft.au=Williams%2C+K+B%3BKrawczynski%2C+M+J%3BNie%2C+N+X%3BDauphas%2C+N%3BCouvy%2C+H%3BHu%2C+M+Y%3BAlp%2C+E+E%3BAnonymous&rft.aulast=Williams&rft.aufirst=K&rft.date=2016-01-01&rft.volume=47&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2016/pdf/2779.pdf LA - English DB - GeoRef N1 - Conference title - 47th lunar and planetary science conference N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 13 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2017-01-24 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - basalts; Fe-56/Fe-54; glasses; igneous rocks; ilmenite; iron; isotope fractionation; isotope ratios; isotopes; magmatic differentiation; mare basalts; metals; Moon; nesosilicates; NRIXS spectra; nuclear resonant inelastic X-ray scattering; olivine; olivine group; orthosilicates; oxides; partitioning; silicates; spectra; stable isotopes; synthetic materials; temperature; titanium; volcanic rocks; X-ray spectra ER - TY - JOUR T1 - A pan-Arctic synthesis of carbon emissions during the nongrowing season AN - 1832644832; 781050-13 JF - International Conference on Permafrost - Book of Abstracts AU - Natali, Susan AU - Selbmann, Anne AU - Abbott, Benjamin W AU - Bjoerkmann, Mats AU - Commane, Roison AU - Cooper, Elizabeth AU - Czimczik, Claudia AU - Davydov, Sergei AU - Davydova, Anna AU - Elberling, Bo AU - Genet, Helene AU - Goeckede, Mathias AU - Jafarov, Elchin AU - Jastrow, Julie AU - Kim, Yongwon AU - Lara, Mark AU - Lupascu, Massimo AU - Oechel, Walter AU - Rezanezhad, Fereidoun AU - Risk, David AU - Semenchuk, Philipp AU - Treat, Claire AU - Waldrop, Mark P AU - Zhuang, Qianlai AU - Zona, Donatella Y1 - 2016 PY - 2016 DA - 2016 SP - 232 EP - 233 PB - [publisher varies], [location varies] VL - 11 KW - respiration KW - permafrost KW - methane KW - degradation KW - Arctic region KW - aliphatic hydrocarbons KW - ecosystems KW - alkanes KW - vegetation KW - thawing KW - climate change KW - geochemical cycle KW - carbon dioxide KW - organic compounds KW - carbon KW - hydrocarbons KW - climate effects KW - ecology KW - greenhouse gases KW - carbon cycle KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832644832?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Conference+on+Permafrost+-+Book+of+Abstracts&rft.atitle=A+pan-Arctic+synthesis+of+carbon+emissions+during+the+nongrowing+season&rft.au=Natali%2C+Susan%3BSelbmann%2C+Anne%3BAbbott%2C+Benjamin+W%3BBjoerkmann%2C+Mats%3BCommane%2C+Roison%3BCooper%2C+Elizabeth%3BCzimczik%2C+Claudia%3BDavydov%2C+Sergei%3BDavydova%2C+Anna%3BElberling%2C+Bo%3BGenet%2C+Helene%3BGoeckede%2C+Mathias%3BJafarov%2C+Elchin%3BJastrow%2C+Julie%3BKim%2C+Yongwon%3BLara%2C+Mark%3BLupascu%2C+Massimo%3BOechel%2C+Walter%3BRezanezhad%2C+Fereidoun%3BRisk%2C+David%3BSemenchuk%2C+Philipp%3BTreat%2C+Claire%3BWaldrop%2C+Mark+P%3BZhuang%2C+Qianlai%3BZona%2C+Donatella&rft.aulast=Natali&rft.aufirst=Susan&rft.date=2016-01-01&rft.volume=11&rft.issue=&rft.spage=232&rft.isbn=&rft.btitle=&rft.title=International+Conference+on+Permafrost+-+Book+of+Abstracts&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Eleventh international conference on Permafrost; exploring permafrost in a future Earth N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 N1 - CODEN - #07985 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; Arctic region; carbon; carbon cycle; carbon dioxide; climate change; climate effects; degradation; ecology; ecosystems; geochemical cycle; greenhouse gases; hydrocarbons; methane; organic compounds; permafrost; respiration; thawing; vegetation ER - TY - JOUR T1 - Redox dependent interfacial reactivity of hexavalent radionuclides AN - 1832634177; 782756-97 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Hellebrandt AU - Knope, K E AU - Lee, S S AU - Stubbs, J E AU - Eng, P J AU - Soderholm, L AU - Fenter, P AU - Schmidt, M AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 1097 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832634177?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Redox+dependent+interfacial+reactivity+of+hexavalent+radionuclides&rft.au=Hellebrandt%3BKnope%2C+K+E%3BLee%2C+S+S%3BStubbs%2C+J+E%3BEng%2C+P+J%3BSoderholm%2C+L%3BFenter%2C+P%3BSchmidt%2C+M%3BAnonymous&rft.aulast=Hellebrandt&rft.aufirst=&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=1097&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/1097.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - Understanding cation adsorption on mica using X-ray reflectivity and molecular dynamics simulations AN - 1832603441; 782763-9 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Lee, Sang Soo AU - Bourg, Ian C AU - Fenter, Paul AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 1709 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832603441?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Understanding+cation+adsorption+on+mica+using+X-ray+reflectivity+and+molecular+dynamics+simulations&rft.au=Lee%2C+Sang+Soo%3BBourg%2C+Ian+C%3BFenter%2C+Paul%3BAnonymous&rft.aulast=Lee&rft.aufirst=Sang&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=1709&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2016/uploads/abstracts/finalPDFs/1709.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2016 N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Last updated - 2017-01-24 ER - TY - JOUR T1 - Effect of mineralogy, pH, temperature, salinity and anions on the ability of bacteria to reduce ferric iron oxides and drive deep subsurface diagenesis AN - 1812220544; 2016-072624 AB - Iron reduction by dissimilatory iron-reducing bacteria (DIRB), coupled with the oxidation of organic compounds or H (sub 2) , causes formation of post-depositional (diagenetic) Fe(II)-containing minerals. Previous studies on the composition, distribution and precipitation rates of secondary minerals during microbial iron reduction have been primarily focused on ferrihydrite reduction by Shewanella spp. However, comparatively little is known about these processes by a variety of other DIRB and the effect of specific environmental factors on Fe(II)-bearing mineral diagenesis. Here we examine how environmental conditions influence the reduction of ferric iron minerals by Orenia metallireducens strain Z6, a DIRB from the phylum Firmicutes. This includes the effects of: (1) pH at 6.5-8.5; (2) temperature at 22-50 C; (3) salinity at 2-20% NaCl; (4) solution chemistry of phosphate and sulfate; (5) electron shuttles (e.g., anthraquinone-2,6-disulfonate (AQDS)); and (6) the reactivity of a variety of iron oxides, including ferrihydrite, lepidocrocite, goethite, hematite, and magnetite. For a total of 19 culturing conditions, we measured ferrous iron produced over time using the ferrozine assay and formation of secondary minerals using scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), X-Ray Diffraction (XRD), and extended X-ray absorption fine structure spectroscopy (Fe-edge XANES and EXAFS). Results show that both the rate and extent of DIRB reduction of ferrihydrite and lepidocrocite vastly exceeded those of the more crystalline minerals. SEM, XRD, Fe-edge XANES and EXAFS indicate diversity in the composition and relative abundance of Fe(II)-containing minerals such as, green rust, siderite, magnetite and/or vivianite under the different environmental conditions. However, the secondary mineralization products cannot be attributed to either the extent or kinetics of Fe(II). Instead, the precipitation and composition of these digenetic minerals have resulted from the intricate interplay of precipitation dynamics, adsorption of Fe(II) and subsequent transformation (dissolution and reprecipitation). This study establishes the first mechanistic understanding of the biomineralization during microbial iron reduction in a broad range of natural environments. JF - Abstracts with Programs - Geological Society of America AU - Dong, Yiran AU - Sanford, Robert A AU - Boyanov, Maxim I AU - Kemner, Kenneth M AU - Flynn, Theodore M AU - O'Loughlin, Edward J AU - George, Samantha AU - Fouke, Kaitlyn E AU - Fouke, Bruce W AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - Abstract no. 2 EP - 5 PB - Geological Society of America (GSA), Boulder, CO VL - 48 IS - 5 SN - 0016-7592, 0016-7592 KW - 06A:Sedimentary petrology KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812220544?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Effect+of+mineralogy%2C+pH%2C+temperature%2C+salinity+and+anions+on+the+ability+of+bacteria+to+reduce+ferric+iron+oxides+and+drive+deep+subsurface+diagenesis&rft.au=Dong%2C+Yiran%3BSanford%2C+Robert+A%3BBoyanov%2C+Maxim+I%3BKemner%2C+Kenneth+M%3BFlynn%2C+Theodore+M%3BO%27Loughlin%2C+Edward+J%3BGeorge%2C+Samantha%3BFouke%2C+Kaitlyn+E%3BFouke%2C+Bruce+W%3BAnonymous&rft.aulast=Dong&rft.aufirst=Yiran&rft.date=2016-01-01&rft.volume=48&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/10.1130%2Fabs%2F2016NC-275203 LA - English DB - GeoRef N1 - Conference title - Geological Society of America, North-Central Section, 50th annual meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-08-18 N1 - CODEN - GAAPBC DO - http://dx.doi.org/10.1130/abs/2016NC-275203 ER - TY - JOUR T1 - Progress in the Development of Oxygen Reduction Reaction Catalysts for Low-Temperature Fuel Cells AN - 1811884965; PQ0003551860 AB - We present a brief summary on the most recent progress in the design of catalysts for electrochemical reduction of oxygen. The main challenge in the wide spread of fuel cell technology is to lower the content of, or even eliminate, Pt and other precious metals in catalysts without sacrificing their performance. Pt-based nanosized catalysts with novel and refined architectures continue to dominate in catalytic performance, and formation of Pt-skin-like surfaces is key to achieving the highest values in activity. Moreover, durability has also been improved in Pt-based systems with addition of Au, which plays an important role in stabilizing the Pt topmost layers against dissolution. However, various carbon-based materials without precious metal have shown improvement in activity and durability and have been explored to serve as catalyst supports. Understanding how the doped elements interact with each other and/or carbon is challenging and necessary in the design of robust fuel cell catalysts. JF - Annual Review of Chemical and Biomolecular Engineering AU - Li, Dongguo AU - Lv, Haifeng AU - Kang, Yijin AU - Markovic, Nenad M AU - Stamenkovic, Vojislav R AD - Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, vrstamenkovic@anl.gov Y1 - 2016///0, PY - 2016 DA - 0, 2016 SP - 509 EP - 532 PB - Annual Reviews, Inc., 4139 El Camino Way Palo Alto CA 94303-0139 United States VL - 7 SN - 1947-5438, 1947-5438 KW - Biotechnology and Bioengineering Abstracts KW - electrochemistry KW - platinum KW - carbon KW - nanoparticle KW - thin films KW - core-shell KW - Oxygen KW - Metals KW - Carbon KW - fuel cells KW - Reviews KW - Dissolution KW - Catalysts KW - W 30935:Food Biotechnology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811884965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Review+of+Chemical+and+Biomolecular+Engineering&rft.atitle=Progress+in+the+Development+of+Oxygen+Reduction+Reaction+Catalysts+for+Low-Temperature+Fuel+Cells&rft.au=Li%2C+Dongguo%3BLv%2C+Haifeng%3BKang%2C+Yijin%3BMarkovic%2C+Nenad+M%3BStamenkovic%2C+Vojislav+R&rft.aulast=Li&rft.aufirst=Dongguo&rft.date=2016-01-01&rft.volume=7&rft.issue=&rft.spage=509&rft.isbn=&rft.btitle=&rft.title=Annual+Review+of+Chemical+and+Biomolecular+Engineering&rft.issn=19475438&rft_id=info:doi/10.1146%2Fannurev-chembioeng-080615-034526 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - Metals; Oxygen; Carbon; fuel cells; Reviews; Dissolution; Catalysts DO - http://dx.doi.org/10.1146/annurev-chembioeng-080615-034526 ER - TY - JOUR T1 - Channel geometry adjustments to a modified streamflow/sediment feed rate regime in a sand-bedded reach of the Green River in Utah AN - 1807506766; 2016-065258 AB - Adjustments of river geometry to flow regulation are not always readily predictable due to the many variables that can adjust concurrently. On a portion of the Green River in Utah, downstream of the Flaming Gorge Dam and a large tributary (Yampa River) that contributes substantial flow and sediment, geomorphic changes in response to a modified discharge and sediment load regime involved modified sandbar dynamics and associated backwater habitat alterations and reduced channel widths. Narrowing occurred without apparent change in the longitudinal profile. Determining the end state (dynamic equilibrium), and whether the end state can be changed through dam operations, requires a thorough understanding of the processes with the ultimate goal of quantitatively modeling system evolution. The Green River longitudinal profile transitions fairly abruptly from a steep course through the Uinta Mountains (the north perimeter of the Uinta basin) to a low-gradient reach on the plateau comprising the basin interior. The reach of interest is the upper approximately 100 km on the plateau ( approximately 50 km downstream of the Yampa River confluence); the reach contains no substantial tributary inputs of flow or sediment. The sand-sized sediment bypass condition (i.e. under transport capacity) in the steep reach, in conjunction with abundant USGS sand load data at that location, forms a highly useful upstream boundary condition. Previous analyses have attempted to predict the dynamic equilibrium condition by using the effective discharge concept along with an empirical hydraulic geometry relationship. In this analysis, a more mechanistic approach is applied. Simple relationships for hydrodynamics and sediment transport are used in conjunction with specified relationships for sediment load versus discharge applied at the upstream boundary. Channel geometry variable combinations are solved that satisfy water and sediment mass continuity constrained by the specified load-discharge relationship for a full range of flows. Pre-dam condition solutions are compared with solutions representing potential system changes: (a) flow duration curve modification alone; (b) load-discharge relationship modification alone; and (c) combinations of both. The results shed light on observed post-dam channel geometry adjustments. JF - Abstracts with Programs - Geological Society of America AU - Waterman, David AU - O'Connor, Ben L AU - LaGory, Kirk E AU - Garcia, Marcelo H AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - Abstract no. 35 EP - 8 PB - Geological Society of America (GSA), Boulder, CO VL - 48 IS - 5 SN - 0016-7592, 0016-7592 KW - 23:Geomorphology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807506766?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Channel+geometry+adjustments+to+a+modified+streamflow%2Fsediment+feed+rate+regime+in+a+sand-bedded+reach+of+the+Green+River+in+Utah&rft.au=Waterman%2C+David%3BO%27Connor%2C+Ben+L%3BLaGory%2C+Kirk+E%3BGarcia%2C+Marcelo+H%3BAnonymous&rft.aulast=Waterman&rft.aufirst=David&rft.date=2016-01-01&rft.volume=48&rft.issue=5&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/10.1130%2Fabs%2F2016NC-275620 LA - English DB - GeoRef N1 - Conference title - Geological Society of America, North-Central Section, 50th annual meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-07-29 N1 - CODEN - GAAPBC DO - http://dx.doi.org/10.1130/abs/2016NC-275620 ER - TY - JOUR T1 - Thermal impact on the control and the efficiency of the 2010 Toyota Prius hybrid electric vehicle AN - 1786179839; PQ0002525352 AB - Since introduction of the Prius to the Japanese automotive market in 1997, Toyota has sold more than 1 million of these hybrid electric vehicles in the USA and 3 million in the worldwide market up to 2013. The market penetration of the vehicle has been successful because it provides outstanding fuel economy. However, the reduction in the vehicle's efficiency under severe weather conditions, especially when the weather is very cold, has not been carefully investigated. The engine's fuel efficiency decreases when the engine is cooled during use in the electric drive mode, or the battery's efficiency is also degraded under cold weather conditions. Whereas the impacts of the thermal conditions on the fuel economies of vehicles are being increasingly emphasized, an analysis of these impacts has not been conducted widely because this type of analysis needs to be based on test results obtained from a well-designed environmental chamber that can simulate different thermal conditions. The Advanced Powertrain Research Facility at Argonne National Laboratory has equipped its environmental thermal chamber appropriately and has tested the 2010 Toyota Prius at different ambient room temperatures (-7 super(o)C, 22 super(o)C, and 35 super(o)C). On the basis of the test results, the findings include the fact that the control behavior changes significantly according to the thermal conditions. For instance, the controller forces the engine to be turned on if the engine coolant temperature is below 53 super(o)C. In addition to the thermal impacts on the controller, performance degradation of the powertrain components and the fuel efficiency levels of the vehicle are also analyzed using the test results. Although this study does not advance a novel idea, the information provided herein should be very useful to researchers seeking to understand controller behavior in the real world under different thermal conditions. JF - Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering AU - Kim, Namwook AU - Rousseau, Aymeric AD - 1 .Department of Mechanical Engineering, Hanyang University, Ansan, Gyeonggi-do, South Korea nakim@anl.gov Y1 - 2016/01// PY - 2016 DA - January 2016 SP - 82 EP - 92 PB - Sage Publications, Inc., 2455 Teller Road Thousand Oaks CA 91320 United States VL - 230 IS - 1 SN - 0954-4070, 0954-4070 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); ANTE: Abstracts in New Technologies and Engineering (AN) KW - Hybrid electric vehicle KW - Prius KW - fuel economy KW - vehicle-level control KW - thermal impact KW - Automotive engineering KW - Fuel consumption KW - Automotive components KW - Markets KW - Crashworthiness KW - Automobiles KW - Impact strength KW - Fuel economy KW - Yes:(AN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786179839?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Institution+of+Mechanical+Engineers%2C+Part+D%3A+Journal+of+Automobile+Engineering&rft.atitle=Thermal+impact+on+the+control+and+the+efficiency+of+the+2010+Toyota+Prius+hybrid+electric+vehicle&rft.au=Kim%2C+Namwook%3BRousseau%2C+Aymeric&rft.aulast=Kim&rft.aufirst=Namwook&rft.date=2016-01-01&rft.volume=230&rft.issue=1&rft.spage=82&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Institution+of+Mechanical+Engineers%2C+Part+D%3A+Journal+of+Automobile+Engineering&rft.issn=09544070&rft_id=info:doi/10.1177%2F0954407015580217 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 20 N1 - Last updated - 2016-05-03 DO - http://dx.doi.org/10.1177/0954407015580217 ER - TY - JOUR T1 - Soil carbon sequestration and land use change associated with biofuel production: empirical evidence AN - 1776659405; PQ0002776705 AB - Soil organic carbon (SOC) change can be a major impact of land use change (LUC) associated with biofuel feedstock production. By collecting and analyzing data from worldwide field observations of major LUCs from cropland, grassland, and forest to lands producing biofuel crops (i.e. corn, switchgrass, Miscanthus, poplar, and willow), we were able to estimate SOC response ratios and sequestration rates and evaluate the effects of soil depth and time scale on SOC change. Both the amount and rate of SOC change were highly dependent on the specific land transition. Irrespective of soil depth or time horizon, cropland conversions resulted in an overall SOC gain of 6-14% relative to initial SOC level, while conversion from grassland or forest to corn (without residue removal) or poplar caused significant carbon loss (9-35%). No significant SOC changes were observed in land converted from grasslands or forests to switchgrass, Miscanthus, or willow. The SOC response ratios were similar in both 0-30 and 0-100 cm soil depths in most cases, suggesting SOC changes in deep soil and that use of top soil only for SOC accounting in biofuel life cycle analysis (LCA) might underestimate total SOC changes. Soil carbon sequestration rates varied greatly among studies and land transition types. Generally, the rates of SOC change tended to be the greatest during the 10 years following land conversion and had declined to approach 0 within about 20 years for most LUCs. Observed trends in SOC change were generally consistent with previous reports. Soil depth and duration of study significantly influence SOC change rates and so should be considered in carbon emission accounting in biofuel LCA. High uncertainty remains for many perennial systems and forest transitions, additional field trials, and modeling efforts are needed to draw conclusions about the site- and system-specific rates and direction of change. JF - GCB Bioenergy AU - Qin, Zhangcai AU - Dunn, Jennifer B AU - Kwon, Hoyoung AU - Mueller, Steffen AU - Wander, Michelle M AD - Energy Systems Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA. Y1 - 2016/01// PY - 2016 DA - January 2016 SP - 66 EP - 80 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 8 IS - 1 SN - 1757-1693, 1757-1693 KW - Environment Abstracts; Sustainability Science Abstracts; Ecology Abstracts KW - Fuel technology KW - Organic carbon KW - Forests KW - Life cycle KW - Crops KW - Soil KW - Carbon sequestration KW - Agricultural land KW - Carbon KW - Corn KW - Emissions KW - Miscanthus KW - Data processing KW - Residues KW - Soils (organic) KW - Land use KW - Soil depth KW - Grasslands KW - Biofuels KW - ENA 03:Energy KW - M3 1010:Issues in Sustainable Development KW - D 04040:Ecosystem and Ecology Studies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776659405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=GCB+Bioenergy&rft.atitle=Soil+carbon+sequestration+and+land+use+change+associated+with+biofuel+production%3A+empirical+evidence&rft.au=Qin%2C+Zhangcai%3BDunn%2C+Jennifer+B%3BKwon%2C+Hoyoung%3BMueller%2C+Steffen%3BWander%2C+Michelle+M&rft.aulast=Qin&rft.aufirst=Zhangcai&rft.date=2016-01-01&rft.volume=8&rft.issue=1&rft.spage=66&rft.isbn=&rft.btitle=&rft.title=GCB+Bioenergy&rft.issn=17571693&rft_id=info:doi/10.1111%2Fgcbb.12237 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-07-20 N1 - SubjectsTermNotLitGenreText - Grasslands; Soil depth; Data processing; Carbon; Life cycle; Forests; Soils (organic); Crops; Land use; Biofuels; Fuel technology; Residues; Organic carbon; Soil; Carbon sequestration; Agricultural land; Corn; Emissions; Miscanthus DO - http://dx.doi.org/10.1111/gcbb.12237 ER - TY - JOUR T1 - The W-WO (sub 2) oxygen fugacity buffer (WWO) at high pressure and temperature; implications for f (sub O2) buffering and metal-silicate partitioning AN - 1773799636; 2016-025629 AB - Synchrotron X-ray diffraction data were obtained to simultaneously measure unit-cell volumes of W and WO (sub 2) at pressures and temperatures up to 70 GPa and 2300 K. Both W and WO (sub 2) unit-cell volume data were fit to Mie-Gruneisen equations of state; parameters for W are K (sub T) =307 (+ or -0.4) GPa, K' (sub T) =4.05 (+ or -0.04), gamma (sub 0) =1.61 (+ or -0.03), and q=1.54 (+ or -0.13). Three phases were observed in WO (sub 2) with structures in the P2 (sub 1) /c, Pnma, and C2/c space groups. The transition pressures are 4 and 32 GPa for the P2 (sub 1) /c-Pnma and Pnma-C2/c phase changes, respectively. The P2 (sub 1) /c and Pnma phases have previously been described, whereas the C2/c phase is newly described here. Equations of state were fitted for these phases over their respective pressure ranges yielding the parameters K (sub T) =238 (+ or -7), 230 (+ or -5), 304 (+ or -3) GPa, K' (sub T) =4 (fixed), 4 (fixed), 4 (fixed) GPa, gamma (sub 0) =1.45 (+ or -0.18), 1.22 (+ or -0.07), 1.21 (+ or -0.12), and q=1 (fixed), 2.90 (+ or -1.5), 1 (fixed) for the P2 (sub 1) /c, Pnma, and C2/c phases, respectively. The W-WO (sub 2) buffer (WWO) was extended to high pressure using these W and WO (sub 2) equations of state. The T-f (sub O2) slope of the WWO buffer along isobars is positive from 1000 to 2500 K with increasing pressure up to at least 60 GPa. The WWO buffer is at a higher f (sub O2) than the iron-wustite (IW) buffer at pressures lower than 40 GPa, and the magnitude of this difference decreases at higher pressures. This implies an increasingly lithophile character for W at higher pressures. The WWO buffer was quantitatively applied to W metal-silicate partitioning by using the WWO-IW buffer difference in combination with literature data on W metal-silicate partitioning to model the exchange coefficient (KD) for the Fe-W exchange reaction. This approach captures the non-linear pressure dependence of W metal-silicate partitioning using the WWO-IW buffer difference. Calculation of KD along a peridotite liquidus predicts a decrease in W siderophility at higher pressures that supports the qualitative behavior predicted by the WWO-IW buffer difference, and agrees with findings of others. Comparing the competing effects of temperature and pressure the results here indicate that pressure exerts a greater effect on W metal-silicate partitioning. JF - American Mineralogist AU - Shofner, Gregory A AU - Campbell, Andrew J AU - Danielson, Lisa R AU - Righter, Kevin AU - Fischer, Rebecca A AU - Wang, Yanbin AU - Prakapenka, Vitali Y1 - 2016/01// PY - 2016 DA - January 2016 SP - 211 EP - 221 PB - Mineralogical Society of America, Washington, DC VL - 101 IS - 1 SN - 0003-004X, 0003-004X KW - silicates KW - experimental studies KW - pressure KW - oxygen KW - X-ray diffraction data KW - numerical analysis KW - buffers KW - carbides KW - high pressure KW - fugacity KW - synchrotron radiation KW - partitioning KW - tungsten KW - Gruneisen parameters KW - metals KW - oxides KW - alloys KW - equations of state KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773799636?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=The+W-WO+%28sub+2%29+oxygen+fugacity+buffer+%28WWO%29+at+high+pressure+and+temperature%3B+implications+for+f+%28sub+O2%29+buffering+and+metal-silicate+partitioning&rft.au=Shofner%2C+Gregory+A%3BCampbell%2C+Andrew+J%3BDanielson%2C+Lisa+R%3BRighter%2C+Kevin%3BFischer%2C+Rebecca+A%3BWang%2C+Yanbin%3BPrakapenka%2C+Vitali&rft.aulast=Shofner&rft.aufirst=Gregory&rft.date=2016-01-01&rft.volume=101&rft.issue=1&rft.spage=211&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2016-5328 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 41 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-03-17 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - alloys; buffers; carbides; equations of state; experimental studies; fugacity; Gruneisen parameters; high pressure; metals; numerical analysis; oxides; oxygen; partitioning; pressure; silicates; synchrotron radiation; tungsten; X-ray diffraction data DO - http://dx.doi.org/10.2138/am-2016-5328 ER - TY - JOUR T1 - Engineering growth factors for regenerative medicine applications. AN - 1752353504; 26555377 AB - UNLABELLEDGrowth factors are important morphogenetic proteins that instruct cell behavior and guide tissue repair and renewal. Although their therapeutic potential holds great promise in regenerative medicine applications, translation of growth factors into clinical treatments has been hindered by limitations including poor protein stability, low recombinant expression yield, and suboptimal efficacy. This review highlights current tools, technologies, and approaches to design integrated and effective growth factor-based therapies for regenerative medicine applications. The first section describes rational and combinatorial protein engineering approaches that have been utilized to improve growth factor stability, expression yield, biodistribution, and serum half-life, or alter their cell trafficking behavior or receptor binding affinity. The second section highlights elegant biomaterial-based systems, inspired by the natural extracellular matrix milieu, that have been developed for effective spatial and temporal delivery of growth factors to cell surface receptors. Although appearing distinct, these two approaches are highly complementary and involve principles of molecular design and engineering to be considered in parallel when developing optimal materials for clinical applications.STATEMENT OF SIGNIFICANCEGrowth factors are promising therapeutic proteins that have the ability to modulate morphogenetic behaviors, including cell survival, proliferation, migration and differentiation. However, the translation of growth factors into clinical therapies has been hindered by properties such as poor protein stability, low recombinant expression yield, and non-physiological delivery, which lead to suboptimal efficacy and adverse side effects. To address these needs, researchers are employing clever molecular and material engineering and design strategies to both improve the intrinsic properties of growth factors and effectively control their delivery into tissue. This review highlights examples of interdisciplinary tools and technologies used to augment the therapeutic potential of growth factors for clinical applications in regenerative medicine. JF - Acta biomaterialia AU - Mitchell, Aaron C AU - Briquez, Priscilla S AU - Hubbell, Jeffrey A AU - Cochran, Jennifer R AD - Department of Bioengineering, Stanford University, Stanford, CA, USA. ; Institute for Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland. ; Institute for Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland; Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA; Materials Science Division, Argonne National Laboratory, Argonne, IL, USA. Electronic address: jhubbell@uchicago.edu. ; Department of Bioengineering, Stanford University, Stanford, CA, USA; Department of Chemical Engineering, Stanford University, Stanford, CA, USA. Electronic address: jennifer.cochran@stanford.edu. Y1 - 2016/01// PY - 2016 DA - January 2016 SP - 1 EP - 12 VL - 30 KW - Intercellular Signaling Peptides and Proteins KW - 0 KW - Recombinant Proteins KW - Index Medicus KW - Regenerative medicine KW - Protein engineering KW - High-throughput screening KW - Extracellular matrix KW - Protein library KW - Biomaterials KW - Drug delivery systems KW - Growth factors KW - Controlled release KW - Mutagenesis KW - Animals KW - Humans KW - Recombinant Proteins -- pharmacokinetics KW - Recombinant Proteins -- genetics KW - Recombinant Proteins -- therapeutic use KW - Intercellular Signaling Peptides and Proteins -- genetics KW - Intercellular Signaling Peptides and Proteins -- therapeutic use KW - Intercellular Signaling Peptides and Proteins -- pharmacokinetics KW - Protein Engineering -- methods KW - Regenerative Medicine UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752353504?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Acta+biomaterialia&rft.atitle=Engineering+growth+factors+for+regenerative+medicine+applications.&rft.au=Mitchell%2C+Aaron+C%3BBriquez%2C+Priscilla+S%3BHubbell%2C+Jeffrey+A%3BCochran%2C+Jennifer+R&rft.aulast=Mitchell&rft.aufirst=Aaron&rft.date=2016-01-01&rft.volume=30&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Acta+biomaterialia&rft.issn=1878-7568&rft_id=info:doi/10.1016%2Fj.actbio.2015.11.007 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-09-22 N1 - Date created - 2015-12-28 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.actbio.2015.11.007 ER - TY - JOUR T1 - Experimental study on cesium immobilization in struvite structures AN - 1751211924; PQ0002344673 AB - Ceramicrete, a chemically bonded phosphate ceramic, was developed for nuclear waste immobilization and nuclear radiation shielding. Ceramicrete products are fabricated by an acid-base reaction between magnesium oxide and mono potassium phosphate that has a struvite-K mineral structure. In this study, we demonstrate that this crystalline structure is ideal for incorporating radioactive Cs into a Ceramicrete matrix. This is accomplished by partially replacing K by Cs in the struvite-K structure, thus forming struvite-(K, Cs) mineral. X-ray diffraction and thermo-gravimetric analyses are used to confirm such a replacement. The resulting product is non-leachable and stable at high temperatures, and hence it is an ideal matrix for immobilizing Cs found in high-activity nuclear waste streams. The product can also be used for immobilizing secondary waste streams generated during glass vitrification of spent fuel, or the method described in this article can be used as a pretreatment method during glass vitrification of high level radioactive waste streams. Furthermore, it suggests a method of producing safe commercial radioactive Cs sources. JF - Journal of Hazardous Materials AU - Wagh, Arun S AU - Sayenko, SY AU - Shkuropatenko, V A AU - Tarasov, R V AU - Dykiy, M P AU - Svitlychniy, YO AU - Virych, V D AU - Ulybkina, [ETH][bullet]A AD - Environmental Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, IL 60439, USA Y1 - 2016/01// PY - 2016 DA - January 2016 SP - 241 EP - 249 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 302 SN - 0304-3894, 0304-3894 KW - Toxicology Abstracts; Environment Abstracts KW - Struvite KW - Cesium immobilization KW - Vitrification KW - Chemically bonded phosphate ceramic KW - Ceramicrete KW - Nuclear radiation KW - Cesium KW - Fuels KW - Streams KW - Waste management KW - High temperature KW - potassium phosphate KW - oxides KW - Temperature effects KW - struvite KW - Radioactive wastes KW - Potassium KW - X-ray diffraction KW - Ceramics KW - Phosphates KW - Phosphate KW - vitrification KW - Magnesium KW - Minerals KW - Hazardous wastes KW - Immobilization KW - ENA 03:Energy KW - X 24390:Radioactive Materials UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751211924?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hazardous+Materials&rft.atitle=Experimental+study+on+cesium+immobilization+in+struvite+structures&rft.au=Wagh%2C+Arun+S%3BSayenko%2C+SY%3BShkuropatenko%2C+V+A%3BTarasov%2C+R+V%3BDykiy%2C+M+P%3BSvitlychniy%2C+YO%3BVirych%2C+V+D%3BUlybkina%2C+%5BETH%5D%5Bbullet%5DA&rft.aulast=Wagh&rft.aufirst=Arun&rft.date=2016-01-01&rft.volume=302&rft.issue=&rft.spage=241&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hazardous+Materials&rft.issn=03043894&rft_id=info:doi/10.1016%2Fj.jhazmat.2015.09.049 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - Temperature effects; Cesium; struvite; Fuels; Radioactive wastes; X-ray diffraction; Streams; Ceramics; Phosphate; vitrification; potassium phosphate; oxides; Magnesium; Minerals; Immobilization; Nuclear radiation; Potassium; Waste management; Phosphates; High temperature; Hazardous wastes DO - http://dx.doi.org/10.1016/j.jhazmat.2015.09.049 ER - TY - JOUR T1 - Identification of Non-nucleoside Human Ribonucleotide Reductase Modulators. AN - 1751993227; 26488902 AB - Ribonucleotide reductase (RR) catalyzes the rate-limiting step of dNTP synthesis and is an established cancer target. Drugs targeting RR are mainly nucleoside in nature. In this study, we sought to identify non-nucleoside small-molecule inhibitors of RR. Using virtual screening, binding affinity, inhibition, and cell toxicity, we have discovered a class of small molecules that alter the equilibrium of inactive hexamers of RR, leading to its inhibition. Several unique chemical categories, including a phthalimide derivative, show micromolar IC50s and KDs while demonstrating cytotoxicity. A crystal structure of an active phthalimide binding at the targeted interface supports the noncompetitive mode of inhibition determined by kinetic studies. Furthermore, the phthalimide shifts the equilibrium from dimer to hexamer. Together, these data identify several novel non-nucleoside inhibitors of human RR which act by stabilizing the inactive form of the enzyme. JF - Journal of medicinal chemistry AU - Ahmad, Md Faiz AU - Huff, Sarah E AU - Pink, John AU - Alam, Intekhab AU - Zhang, Andrew AU - Perry, Kay AU - Harris, Michael E AU - Misko, Tessianna AU - Porwal, Suheel K AU - Oleinick, Nancy L AU - Miyagi, Masaru AU - Viswanathan, Rajesh AU - Dealwis, Chris Godfrey AD - Department of Pharmacology, School of Medicine, Case Western Reserve University , Cleveland, Ohio 44106, United States. ; Department of Chemistry, Case Western Reserve University , Cleveland, Ohio 44106, United States. ; Case Comprehensive Cancer Center, Case Western Reserve University , Cleveland, Ohio 44106, United States. ; Northeastern-CAT at the Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; Department of Biochemistry, School of Medicine, Case Western Reserve University , Cleveland, Ohio 44106, United States. ; Department of Chemistry, Dehradun Institute of Technology, University of Deharadun , Dehradun 248197, India. ; Center for Proteomics and Bioinformatics, Case Western Reserve University , Cleveland, Ohio 44106, United States. Y1 - 2015/12/24/ PY - 2015 DA - 2015 Dec 24 SP - 9498 EP - 9509 VL - 58 IS - 24 KW - Antineoplastic Agents KW - 0 KW - Phthalimides KW - RRM1 protein, human KW - Tumor Suppressor Proteins KW - Ribonucleotide Reductases KW - EC 1.17.4.- KW - Index Medicus KW - Cell Proliferation -- drug effects KW - Drug Screening Assays, Antitumor KW - Computer Simulation KW - Databases, Chemical KW - Humans KW - Phthalimides -- pharmacology KW - Cell Line, Tumor KW - Protein Multimerization KW - Phthalimides -- chemistry KW - Protein Binding KW - Structure-Activity Relationship KW - Molecular Docking Simulation KW - Crystallography, X-Ray KW - Protein Conformation KW - Tumor Suppressor Proteins -- antagonists & inhibitors KW - Ribonucleotide Reductases -- antagonists & inhibitors KW - Ribonucleotide Reductases -- chemistry KW - Antineoplastic Agents -- chemistry KW - Tumor Suppressor Proteins -- chemistry KW - Antineoplastic Agents -- pharmacology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751993227?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+medicinal+chemistry&rft.atitle=Identification+of+Non-nucleoside+Human+Ribonucleotide+Reductase+Modulators.&rft.au=Ahmad%2C+Md+Faiz%3BHuff%2C+Sarah+E%3BPink%2C+John%3BAlam%2C+Intekhab%3BZhang%2C+Andrew%3BPerry%2C+Kay%3BHarris%2C+Michael+E%3BMisko%2C+Tessianna%3BPorwal%2C+Suheel+K%3BOleinick%2C+Nancy+L%3BMiyagi%2C+Masaru%3BViswanathan%2C+Rajesh%3BDealwis%2C+Chris+Godfrey&rft.aulast=Ahmad&rft.aufirst=Md&rft.date=2015-12-24&rft.volume=58&rft.issue=24&rft.spage=9498&rft.isbn=&rft.btitle=&rft.title=Journal+of+medicinal+chemistry&rft.issn=1520-4804&rft_id=info:doi/10.1021%2Facs.jmedchem.5b00929 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-04 N1 - Date created - 2015-12-24 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 4X3V; PDB N1 - SuppNotes - Cited By: Mol Gen Genet. 1985;201(3):537-42 [3911030] J Agric Food Chem. 1980 Jul-Aug;28(4):812-7 [6780614] Cancer Res. 1989 Dec 15;49(24 Pt 1):6923-8 [2573423] Cancer Res. 1991 May 1;51(9):2386-94 [1707752] Mol Pharmacol. 1990 Oct;38(4):567-72 [2233693] J Biol Chem. 1990 Sep 25;265(27):16617-25 [1697861] Cancer Res. 1991 Nov 15;51(22):6110-7 [1718594] Semin Oncol. 1992 Jun;19(3 Suppl 9):11-9 [1641651] Nature. 1994 Aug 18;370(6490):533-9 [8052308] Semin Oncol. 1995 Aug;22(4 Suppl 11):11-8 [7481839] Protein Sci. 1995 Nov;4(11):2411-23 [8563639] Nature. 1996 Nov 7;384(6604 Suppl):23-6 [8895597] Structure. 1997 Aug 15;5(8):1077-92 [9309223] Mol Pharmacol. 1999 Mar;55(3):515-20 [10051535] Nat Struct Mol Biol. 2004 Nov;11(11):1142-9 [15475969] J Med Chem. 1963 Mar;6:201 [14188794] Mol Cancer Ther. 2005 Aug;4(8):1268-76 [16093443] Proc Natl Acad Sci U S A. 2006 Mar 14;103(11):4022-7 [16537479] J Med Chem. 2006 Aug 10;49(16):4992-5000 [16884311] Curr Cancer Drug Targets. 2006 Aug;6(5):409-31 [16918309] J Biol Chem. 2006 Sep 22;281(38):27705-11 [16861739] J Med Chem. 2006 Oct 19;49(21):6177-96 [17034125] J Biomol Screen. 2007 Feb;12(1):92-9 [17130250] Proc Natl Acad Sci U S A. 2007 Sep 4;104(36):14324-9 [17726094] Proc Natl Acad Sci U S A. 2007 Oct 9;104(41):16074-9 [17911242] Nature. 2007 Dec 13;450(7172):1001-9 [18075579] Recent Pat Anticancer Drug Discov. 2007 Jan;2(1):11-29 [18221051] Cell Cycle. 2009 Dec;8(23):3943-52 [19901550] Biochemistry. 2009 Dec 15;48(49):11612-21 [19899807] J Med Chem. 2010 Apr 8;53(7):2719-40 [20131845] Nucleic Acids Res. 2011 Mar;39(4):1360-71 [20961955] Nat Struct Mol Biol. 2011 Mar;18(3):316-22 [21336276] J Am Chem Soc. 2011 Apr 13;133(14):5363-71 [21322593] Proc Natl Acad Sci U S A. 2011 Jun 14;108(24):9815-20 [21628579] Lancet Oncol. 2011 Jul;12(7):693-702 [21163702] Crit Rev Biochem Mol Biol. 2012 Jan-Feb;47(1):50-63 [22050358] J Mol Biol. 2012 Jun 22;419(5):315-29 [22465672] Chem Biol. 2012 Jul 27;19(7):799-805 [22840768] Mol Cancer Ther. 2012 Oct;11(10):2077-86 [22933704] Q Rev Biophys. 2012 Nov;45(4):383-426 [22971516] Arch Biochem Biophys. 2013 Feb 15;530(2):73-82 [23296088] Curr Top Med Chem. 2013;13(1):55-63 [23409765] Cancer Res. 2013 Nov 1;73(21):6484-93 [24072748] World J Gastroenterol. 2014 Aug 21;20(31):10825-44 [25152585] Science. 2014 Sep 19;345(6203):1512-5 [25237103] Biochemistry. 2002 Jan 15;41(2):462-74 [11781084] Nat Rev Drug Discov. 2002 Sep;1(9):727-30 [12209152] Biochemistry. 2003 Feb 18;42(6):1696-706 [12578384] Adv Enzyme Regul. 2003;43:167-82 [12791390] Nucleosides Nucleotides Nucleic Acids. 2003 May-Aug;22(5-8):653-8 [14565246] J Med Chem. 2004 Mar 25;47(7):1739-49 [15027865] J Med Chem. 2004 Mar 25;47(7):1750-9 [15027866] Eur J Biochem. 1969 Jul;9(4):561-73 [4896737] J Mol Biol. 1969 Nov 28;46(1):39-55 [4902212] J Mol Biol. 1973 Sep 15;79(2):351-71 [4760134] Cancer Res. 1989 Sep 15;49(18):4972-8 [2569929] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.jmedchem.5b00929 ER - TY - JOUR T1 - Identifying the Atomic-Level Effects of Metal Composition on the Structure and Catalytic Activity of Peptide-Templated Materials. AN - 1751487009; 26497843 AB - Bioinspired approaches for the formation of metallic nanomaterials have been extensively employed for a diverse range of applications including diagnostics and catalysis. These materials can often be used under sustainable conditions; however, it is challenging to control the material size, morphology, and composition simultaneously. Here we have employed the R5 peptide, which forms a 3D scaffold to direct the size and linear shape of bimetallic PdAu nanomaterials for catalysis. The materials were prepared at varying Pd:Au ratios to probe optimal compositions to achieve maximal catalytic efficiency. These materials were extensively characterized at the atomic level using transmission electron microscopy, extended X-ray absorption fine structure spectroscopy, and atomic pair distribution function analysis derived from high-energy X-ray diffraction patterns to provide highly resolved structural information. The results confirmed PdAu alloy formation, but also demonstrated that significant surface structural disorder was present. The catalytic activity of the materials was studied for olefin hydrogenation, which demonstrated enhanced reactivity from the bimetallic structures. These results present a pathway to the bioinspired production of multimetallic materials with enhanced properties, which can be assessed via a suite of characterization methods to fully ascertain structure/function relationships. JF - ACS nano AU - Merrill, Nicholas A AU - McKee, Erik M AU - Merino, Kyle C AU - Drummy, Lawrence F AU - Lee, Sungsik AU - Reinhart, Benjamin AU - Ren, Yang AU - Frenkel, Anatoly I AU - Naik, Rajesh R AU - Bedford, Nicholas M AU - Knecht, Marc R AD - Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146, United States. ; Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base , Dayton, Ohio 45433, United States. ; X-Ray Science Division, Argonne National Laboratory , 9700 S. Cass Avenue, Argonne, Illinois 60439, United States. ; Department of Physics, Yeshiva University , New York, New York 10016, United States. Y1 - 2015/12/22/ PY - 2015 DA - 2015 Dec 22 SP - 11968 EP - 11979 VL - 9 IS - 12 KW - Peptides KW - 0 KW - Silver KW - 3M4G523W1G KW - Gold KW - 7440-57-5 KW - Index Medicus KW - catalysis KW - bimetallic nanostructures KW - X-ray analysis KW - bioinspired KW - peptide templates KW - Hydrophobic and Hydrophilic Interactions KW - X-Ray Diffraction KW - Catalysis KW - Silver -- chemistry KW - Metal Nanoparticles -- chemistry KW - Peptides -- metabolism KW - Peptides -- chemistry KW - Gold -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1751487009?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+nano&rft.atitle=Identifying+the+Atomic-Level+Effects+of+Metal+Composition+on+the+Structure+and+Catalytic+Activity+of+Peptide-Templated+Materials.&rft.au=Merrill%2C+Nicholas+A%3BMcKee%2C+Erik+M%3BMerino%2C+Kyle+C%3BDrummy%2C+Lawrence+F%3BLee%2C+Sungsik%3BReinhart%2C+Benjamin%3BRen%2C+Yang%3BFrenkel%2C+Anatoly+I%3BNaik%2C+Rajesh+R%3BBedford%2C+Nicholas+M%3BKnecht%2C+Marc+R&rft.aulast=Merrill&rft.aufirst=Nicholas&rft.date=2015-12-22&rft.volume=9&rft.issue=12&rft.spage=11968&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Facsnano.5b04665 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-10-05 N1 - Date created - 2015-12-22 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsnano.5b04665 ER - TY - JOUR T1 - Laboratory for radiokrypton dating AN - 1840616006; 2016-093594 AB - Due to its simple production and transport in the terrestrial environment, (super 81) Kr (half-life = 230,000 yr) is the ideal tracer for old water and ice with mean residence times in the range of 105-106 years, a range beyond the reach of (super 14) C. (super 81) Kr-dating is now available to the earth science community at large thanks to the development of an efficient and selective atom counter based on the Atom Trap Trace Analysis (ATTA) method. ATTA is a laser-based atom counting method where individual neutral atoms of the desired isotope are selectively captured by laser beams, and their fluorescence detected via a CCD camera. ATTA is unique among trace analysis techniques in that it is free of interferences from any other isotopes, isobars, atomic or molecular species. The ATTA instrument at Argonne's Laboratory for Radiokrypton Dating is capable of measuring both (super 81) Kr/Kr and (super 85) Kr/Kr ratios of environmental samples in the range of 10 (super -14) -10 (super -10) . For (super 81) Kr-dating in the age range of 150 kyr - 1500 kyr, the required sample size is 5 micro-L STP of krypton gas, which can be extracted from approximately 100 kg of water or 40 kg of ice. For (super 85) Kr/Kr analysis, the sample size can be smaller by an order of magnitude. We are continually developing the method towards higher counting efficiency, smaller sample sizes requirements, and higher sample throughput rates. In the past four years, we have performed radiokrypton analysis of over 150 groundwater and ice samples extracted by collaborators from all seven continents. Sample collection and purification was performed by groups including the University of Chicago, the University of Illinois at Chicago, the University of Bern, and the International Atomic Energy Agency. This work is supported by the U.S. DOE, Office of Nuclear Physics, under contract DE-AC02-06CH11357. JF - American Geophysical Union Fall Meeting AU - Zappala, Jake Christopher AU - Jiang, Wei AU - Bailey, Kevin G AU - Lu, Zheng-Tian AU - Mueller, Peter AU - O'Connor, Thomas P AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract H21F EP - 1448 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840616006?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Laboratory+for+radiokrypton+dating&rft.au=Zappala%2C+Jake+Christopher%3BJiang%2C+Wei%3BBailey%2C+Kevin+G%3BLu%2C+Zheng-Tian%3BMueller%2C+Peter%3BO%27Connor%2C+Thomas+P%3BAnonymous&rft.aulast=Zappala&rft.aufirst=Jake&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Fossil endocarps of Aralia (Araliaceae) from the upper Pliocene of Yunnan in southwest China, and their biogeographical implications AN - 1832633034; 762827-8 AB - Aralia stratosa H. Zhu, Y.J. Huang et Z.K. Zhou sp. nov. is described based on fossil endocarps from the upper Pliocene of northwest Yunnan in southwest China. The endocarps are characterized by a semicircular to elliptic outline in the lateral view, an apical beak-like structure bending towards the ventral side, and a transversely wrinkled surface, collectively indicating taxonomical inclusion in the genus Aralia (Araliaceae). The new fossil taxon is compared with nine extant species of Aralia based on endocarp morphology and anatomy, showing the carpological resemblance to A. echinocaulis. Aralia stratosa sp. nov. represents the first confirmed fossil record from lower latitudes in the Northern Hemisphere. This implies a southerly biogeographical range for this genus than was previously interpreted. The fossil record of Aralia suggests a Cretaceous origin in North America and an Eocene dispersal to eastern Asia, likely via the Bering land bridge, followed by Miocene establishment in Europe. The genus likely began to inhabit lower latitudes in eastern Asia no later than the late Pliocene, which is in line with results from molecular analyses. All these may suggest a southward distributional change probably associated with the global cooling and northern aridification. Abstract Copyright (2015) Elsevier, B.V. JF - Review of Palaeobotany and Palynology AU - Zhu, Hai AU - Jacques, Frederic M B AU - Wang, Li AU - Xiao, Xiang-Hui AU - Huang, Yongjiang AU - Zhou, Zhekun Y1 - 2015/12// PY - 2015 DA - December 2015 SP - 94 EP - 103 PB - Elsevier, Amsterdam VL - 223 SN - 0034-6667, 0034-6667 KW - clay KW - Lanping County Yunnan KW - terrestrial environment KW - Far East KW - Cretaceous KW - upper Pliocene KW - biogeography KW - Sanying Formation KW - leaves KW - new taxa KW - Cenozoic KW - sediments KW - cooling KW - seeds KW - Asia KW - Araliaceae KW - collections KW - China KW - Plantae KW - Eocene KW - clastic sediments KW - arid environment KW - fruits KW - electron microscopy data KW - Paleogene KW - Mesozoic KW - Tertiary KW - Neogene KW - Fudong Village Yunnan KW - Yunnan China KW - Pliocene KW - fossils KW - SEM data KW - 09:Paleobotany UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832633034?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Review+of+Palaeobotany+and+Palynology&rft.atitle=Fossil+endocarps+of+Aralia+%28Araliaceae%29+from+the+upper+Pliocene+of+Yunnan+in+southwest+China%2C+and+their+biogeographical+implications&rft.au=Zhu%2C+Hai%3BJacques%2C+Frederic+M+B%3BWang%2C+Li%3BXiao%2C+Xiang-Hui%3BHuang%2C+Yongjiang%3BZhou%2C+Zhekun&rft.aulast=Zhu&rft.aufirst=Hai&rft.date=2015-12-01&rft.volume=223&rft.issue=&rft.spage=94&rft.isbn=&rft.btitle=&rft.title=Review+of+Palaeobotany+and+Palynology&rft.issn=00346667&rft_id=info:doi/10.1016%2Fj.revpalbo.2015.09.010 L2 - http://www.sciencedirect.com/science/journal/00346667 LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Number of references - 57 N1 - Document feature - illus. incl. 5 plates, 2 tables, geol. sketch map N1 - Last updated - 2017-01-24 N1 - CODEN - RPPYAX N1 - SubjectsTermNotLitGenreText - Araliaceae; arid environment; Asia; biogeography; Cenozoic; China; clastic sediments; clay; collections; cooling; Cretaceous; electron microscopy data; Eocene; Far East; fossils; fruits; Fudong Village Yunnan; Lanping County Yunnan; leaves; Mesozoic; Neogene; new taxa; Paleogene; Plantae; Pliocene; Sanying Formation; sediments; seeds; SEM data; terrestrial environment; Tertiary; upper Pliocene; Yunnan China DO - http://dx.doi.org/10.1016/j.revpalbo.2015.09.010 ER - TY - JOUR T1 - Temperature of Earth's deep interior constrained from melting of Fe and Fe (sub 0.9) Ni (sub 0.1) at high pressures AN - 1812220481; 2016-072448 AB - The melting points of fcc- and hcp-structured Fe0.9Ni0.1 and Fe have been measured up to Mbar pressure. We use laser heated diamond anvil cells, time-resolved synchrotron Moessbauer spectroscopy, X-ray diffraction and a recently developed fast temperature readout spectrometer to carry out these measurements. X-ray photons at 57Fe's resonant energy with 1 meV bandwidth are focused on the sample in a laser heated diamond anvil cell, and when melting occurs, the characteristic Moessbauer signal abruptly decreases. Thus, time-resolved Moessbauer spectroscopy provides an excellent diagnostic for the first melt formed in the sample chamber. The thermal contributions of pressure of Fe0.9Ni0.1 and Fe have been constrained by combining nuclear resonant inelastic scattering and high temperature X-ray diffraction measurements. We find that the melting curve of Fe is systematically higher than the melting curve of Fe0.9Ni0.1, while the 1-sigma temperature uncertainties of both melting curves overlap. The pressure dependencies of the melting temperature of fcc-structured Fe and Fe0.9Ni0.1 are measured, and the best-fit melting curves are located in the region bounded by previous studies. Our results may help reach a consensus on the high pressure melting curves of Fe and Fe-Ni alloys. We calculate the fcc-hcp-liquid triple points of Fe0.9Ni0.1and Fe, complemented by experiments with Moessbauer spectroscopy. The upper bound of Earth's inner core-outer core boundary temperature is estimated from our results, and the upper bound of the temperature at Earth's core-mantle boundary is computed with an adiabatic model. We discuss the implications of these temperatures on the phase relations of deep Earth materials. References:Murphy, C.A., J.M. Jackson, W. Sturhahn, and B. Chen (2011): Melting and thermal pressure of hcp-Fe from the phonon density of states, Phys. Earth Planet. Int., 188, 114-120 Jackson, J. M., W. Sturhahn, M. Lerche, J. Zhao, T. S. Toellner, E. E. Alp, S. V. Sinogeikin, J. D. Bass, C. A. Murphy, and J. K. Wicks (2013): Melting of compressed iron by monitoring atomic dynamics, EPSL, 362, 143-150 Zhang, D., J. M. Jackson, J. Zhao, W. Sturhahn, E. E. Alp, T. S. Toellner, and M. Hu (2015): Fast temperature spectrometer for samples under extreme conditions. Review of Scientific Instruments, 86, 013105 JF - American Geophysical Union Fall Meeting AU - Zhang, D AU - Jackson, J M AU - Zhao, J AU - Sturhahn, W AU - Alp, E E AU - Hu, M Y AU - Toellner, T AU - Murphy, C A AU - Prakapenka, V AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract MR33D EP - 03 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1812220481?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Temperature+of+Earth%27s+deep+interior+constrained+from+melting+of+Fe+and+Fe+%28sub+0.9%29+Ni+%28sub+0.1%29+at+high+pressures&rft.au=Zhang%2C+D%3BJackson%2C+J+M%3BZhao%2C+J%3BSturhahn%2C+W%3BAlp%2C+E+E%3BHu%2C+M+Y%3BToellner%2C+T%3BMurphy%2C+C+A%3BPrakapenka%2C+V%3BAnonymous&rft.aulast=Zhang&rft.aufirst=D&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-08-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Multi-scale evidence of large CO (sub 2) and CH (sub 4) emissions from permafrost during spring thaw in northern Alaska AN - 1807509448; 2016-066716 AB - Arctic warming will amplify climate change especially if thawing tundra emits increasingly greater amounts of CO (sub 2) and CH (sub 4) due to rising temperatures in the coming decades. However, uncertainties about flux rates and sources limit the prediction of these feedbacks. The few observations of tundra carbon fluxes during snowmelt suggest that there may be large releases during spring thaw, but little is known about the underlying mechanisms and whether emissions of greenhouse gases are widespread enough to influence atmospheric concentrations. To address this question we employed a multi-scale approach, including ecosystem-scale measurements, a mechanistic soil-core thawing experiment, and airborne observations of atmospheric carbon concentrations. We show that fluxes during the 2-week period of snow and surface-ice melt in 2014 near Barrow, Alaska, reduced the net snow-free season uptake of CO (sub 2) by 46% and added 6% to the CH (sub 4) emissions. A controlled laboratory experiment revealed that when frozen permafrost was exposed to warming temperatures, it released an immediate, large pulse of CO (sub 2) and CH (sub 4) that had been trapped under the surface ice. While the Alaskan North Slope was undergoing snowmelt, changes in the concentrations of CO (sub 2) and CH (sub 4) measured by aircraft were correlated to fluxes of CO (sub 2) and CH (sub 4) measured by eddy-covariance. Airborne measurements from the aircraft reflected local observations, and confirmed that the pulse had influence on regional atmospheric concentrations. This research suggests that the Arctic carbon spring pulse is a result of a delayed release of biogenic production in fall, and that this pulse is widespread and large enough to offset a significant fraction of the moderate Arctic tundra carbon sink. JF - American Geophysical Union Fall Meeting AU - Raz Yaseef, N AU - Torn, M S AU - Billesbach, D P AU - Wu, Y AU - Kneafsey, T J AU - Romanovsky, V E AU - Cook, D R AU - Commane, R AU - Henderson, J AU - Miller, C E AU - Wullschleger, S D AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B43M EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807509448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Multi-scale+evidence+of+large+CO+%28sub+2%29+and+CH+%28sub+4%29+emissions+from+permafrost+during+spring+thaw+in+northern+Alaska&rft.au=Raz+Yaseef%2C+N%3BTorn%2C+M+S%3BBillesbach%2C+D+P%3BWu%2C+Y%3BKneafsey%2C+T+J%3BRomanovsky%2C+V+E%3BCook%2C+D+R%3BCommane%2C+R%3BHenderson%2C+J%3BMiller%2C+C+E%3BWullschleger%2C+S+D%3BAnonymous&rft.aulast=Raz+Yaseef&rft.aufirst=N&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-07-29 N1 - CODEN - #07548 ER - TY - JOUR T1 - Deformation and crystallographic preferred orientation of two-phase lower mantle mineral analogs; implications for seismic anisotropy in the lower mantle AN - 1807508379; 2016-066818 AB - Geodynamic models predict large strains due to convection in the mantle, and polycrystal plasticity simulations suggest strong crystallographic preferred orientation (CPO), yet much of the lower mantle is observed to be mostly isotropic. However, these models ignore interaction among phases, which is important for the lower mantle, estimated to be composed of nearly equal 25% soft ferropericlase (Mg,Fe)O and nearly equal 70% harder bridgmanite (MgSiO (sub 3) ). Here we consider deformation of these two lower mantle mineral phases together and look at the microstructure to find whether soft ferropericlase becomes interconnected and acts as a lubricant between harder bridgmanite grains or if ferropericlase is largely disconnected leaving deformation to be absorbed by bridgmanite. We quantify how the volume percent of ferropericlase might affect deformation and CPO development in the lower mantle. We deformed lower mantle mineral analogs halite (NaCl, ferropericlase structure) and neighborite (NaMgF (sub 3) , perovskite structure) together in the D-DIA. Development of CPO was recorded in situ with radial X-ray diffraction, and information on microstructural evolution was collected using X-ray microtomography. We performed self-consistent polycrystal plasticity modelling to infer likely slip systems and strain rates in each phase. Results show that when present in as little as 15% volume, the soft halite becomes interconnected during deformation, surrounding the harder neighborite grains. The change in microstructure during deformation coincides with a decrease in differential stress, i.e. weakening of the aggregate, and a reduction in CPO, likely due to a switch in deformation mode. Furthermore, polycrystal plasticity models imply much higher strain rates in the softer halite, suggesting it is absorbing the bulk of deformation. The halite does not develop significant CPO, and CPO in the neighborite is reduced by nearly half with addition of 15% volume halite. The results suggest that ferropericlase controls deformation in the lower mantle through a mechanism that does not produce significant CPO. This implies a more viscous lower mantle and helps to explain why the bulk of the lower mantle is fairly isotropic. JF - American Geophysical Union Fall Meeting AU - Kaercher, P M AU - Miyagi, L M AU - Kanitpanyacharoen, W AU - Zepeda-Alarcon, E AU - Wang, Y AU - Parkinson, D AU - Lebensohn, R AU - DeCarlo, F AU - Wenk, H R AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract DI13C EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807508379?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Deformation+and+crystallographic+preferred+orientation+of+two-phase+lower+mantle+mineral+analogs%3B+implications+for+seismic+anisotropy+in+the+lower+mantle&rft.au=Kaercher%2C+P+M%3BMiyagi%2C+L+M%3BKanitpanyacharoen%2C+W%3BZepeda-Alarcon%2C+E%3BWang%2C+Y%3BParkinson%2C+D%3BLebensohn%2C+R%3BDeCarlo%2C+F%3BWenk%2C+H+R%3BAnonymous&rft.aulast=Kaercher&rft.aufirst=P&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-07-29 N1 - CODEN - #07548 ER - TY - JOUR T1 - Shrinkage cracking; a mechanism for self-sustaining carbon mineralization reactions in olivine rocks AN - 1800397211; 2016-058057 AB - The hydration and carbonation of olivine results in an up to approximately 44% increase in solid molar volume, which may choke off of fluid supply and passivate reactive surfaces, thus preventing further carbonation reactions. The carbonation of olivine has ben studied extensively in the laboratory. To date, observations from these experimental studies indicate that carbonation reaction rates generally decrease with time and the extent of carbonation is limited in olivine rocks. Field studies, however, show that 100% hydration and carbonation occur naturally in ultramafic rocks. The disagreement between the laboratory results under controlled conditions and the field observations underlines the lack of understanding of the mechanisms responsible for the self-sustaining carbonation interaction in nature. We developed a state-of-the-art pressurized hydrothermal cell that is transparent to X-rays to characterize the real-time evolution of pore geometry during fluid-rock interaction using in-situ synchrotron-based X-ray microtomography. Through a time series of high-resolution 3-dimensional images, we document the microstructural evolution of a porous olivine aggregate reacting with a sodium bicarbonate solution at elevated pressure and temperature conditions. We observed porosity increases, near constant rate of crystal growth, and pervasive reaction-induced fractures. Based on the nanometer scale tomography data, we propose that shrinkage cracking is the mechanism responsible for producing new reactive surface and keep the carbonation reaction self-sustaining in our experiment. Shrinkage cracks are commonly observed in drying mud ponds, cooling lava flows and ice wedge fields. Stretching of a contracting surface bonded to a substrate of nearly constant dimensions leads to a stress buildup in the surface layer. When the stress exceeds the tensile strength, polygonal cracks develop in the surface layer. In our experiments, the stretching mismatch between the surface and interior of the sintered olivine aggregate is instigated by rapid dissolution and non-uniform precipitation. Our results provide new insight into the weathering of ultramafic rocks in nature and guidance to experimental designs for more efficient carbonation. JF - American Geophysical Union Fall Meeting AU - Zhu, Wenlu AU - Fusseis, Florian AU - Lisabeth, Harrison P AU - Xing, Tiange AU - Xiao, Xianghui AU - de Andrade, Vincent J D AU - Karato, Shun-ichiro AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract MR23C EP - 05 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800397211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Shrinkage+cracking%3B+a+mechanism+for+self-sustaining+carbon+mineralization+reactions+in+olivine+rocks&rft.au=Zhu%2C+Wenlu%3BFusseis%2C+Florian%3BLisabeth%2C+Harrison+P%3BXing%2C+Tiange%3BXiao%2C+Xianghui%3Bde+Andrade%2C+Vincent+J+D%3BKarato%2C+Shun-ichiro%3BAnonymous&rft.aulast=Zhu&rft.aufirst=Wenlu&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-11-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - High-pressure behavior of FCC phase FeHx AN - 1800397104; 2016-058036 AB - Earth's core is composed of iron with the inclusion of light elements to compensate for the difference between seismically obtained densities and the density of pure Fe at relevant pressure and temperature conditions. As the most abundant and lightest element in the solar system, hydrogen is a plausible contributor to this core density deficit. Nearly stoichiometric iron hydride (FeHx) has been shown to result from the reaction of Fe and hydrous silicates, and is stable up to at least 80 GPa. Iron hydride formation at Earth's surface is unlikely because the equilibrium hydrogen solubility in iron at atmospheric conditions is prohibitively low, yet as hydrogen solubility increases with pressure, so does the likelihood of FeHx formation within the Earth's interior. Recent experimental and ab initio attempts disagree on the equation of state parameters needed to describe the compressional behavior of FeHx. The work presented here combines synchrotron x-ray diffraction of laser-heated diamond anvil cell compressed samples with high-pressure, ambient temperature nuclear resonant inelastic scattering (NRIXS) and synchrotron Mossbauer spectroscopy (SMS) to better constrain the behavior of the fcc phase of FeHx at elevated pressures and temperatures. By pairing P-V-T data for iron hydride with the sound velocity information available through high-pressure NRIXS studies, we can better understand the degree to which hydrogen may contribute to the density deficit of Earth's iron core. JF - American Geophysical Union Fall Meeting AU - Thompson, Elizabeth Colette AU - Chidester, Bethany AU - Fischer, Rebecca A AU - Prakapenka, Vitali AU - Bi, Wenli AU - Alp, Ercan E AU - Campbell, Andrew J AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract MR23B EP - 2649 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800397104?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=High-pressure+behavior+of+FCC+phase+FeHx&rft.au=Thompson%2C+Elizabeth+Colette%3BChidester%2C+Bethany%3BFischer%2C+Rebecca+A%3BPrakapenka%2C+Vitali%3BBi%2C+Wenli%3BAlp%2C+Ercan+E%3BCampbell%2C+Andrew+J%3BAnonymous&rft.aulast=Thompson&rft.aufirst=Elizabeth&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Lithologic melt partitioning and transport properties of partially molten harzburgite AN - 1800396978; 2016-058054 AB - Quantitative constraints on melt transport in upper mantle are critical to understanding various dynamic processes at ocean ridges. In this study, we propose that thermodynamic gradients, resulting from spatial variations in mineralogy, can unevenly partition melt between olivine and orthopyroxene (opx), the two most abundant minerals in the upper mantle. The lithologic melt partitioning leads to higher melt fraction in olivine-rich regions compared to opx-rich regions, which may have important implications for melt transport. Lithologic partitioning has been experimentally confirmed in analogue systems, such as quartz/fluorite-H (sub 2) O (Watson, 1999), but has never been observed in olivine/opx-melt samples. We synthesized olivine/opx-melt (harzburgite) samples by isostatically pressing oxide-high alumina basalt mixtures at 1350 degrees C and 1.5 GPa in a piston-cylinder apparatus. Nominal melt fractions of 0.02 to 0.20 and a constant 3 to 2 (olivine to opx) volume ratio were tested. Experimental charges were quenched, cored, and imaged using synchrotron X-ray microtomography. The resulting 3-D images constitute digital rock samples on which local melt fraction distributions, permeabilities, and electrical conductivities were numerically quantified. Our results are strong evidence for melt partitioning between olivine and opx: local melt fractions are 10 to 50% higher around olivine than opx grains. At the same melt fraction, permeabilities of whole harzburgite samples are lower compared to monomineralic olivine-melt samples (Miller et al., 2014). However, the presence of opx negligibly affects the permeability-porosity relation unless the abundance of opx is more than 40 vol.%. In contrast, electrical conductivities of harzburgites are systematically lower than those of olivine-melt samples. Lithological melt partitioning could be another mechanism responsible for forming high-porosity melt pathways in addition to reaction infiltration instability and deformation melt bands. JF - American Geophysical Union Fall Meeting AU - Miller, Kevin John AU - Zhu, Wenlu AU - Montesi, Laurent AU - Gaetani, Glenn A AU - Le Roux, Veronique AU - Xiao, Xianghui AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract MR23C EP - 02 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1800396978?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Lithologic+melt+partitioning+and+transport+properties+of+partially+molten+harzburgite&rft.au=Miller%2C+Kevin+John%3BZhu%2C+Wenlu%3BMontesi%2C+Laurent%3BGaetani%2C+Glenn+A%3BLe+Roux%2C+Veronique%3BXiao%2C+Xianghui%3BAnonymous&rft.aulast=Miller&rft.aufirst=Kevin&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Bioavailable carbon and the relative degradation state of organic matter in active layer and permafrost soils AN - 1797535112; 2016-050791 AB - The decomposability of soil organic carbon (SOC) in permafrost regions is a key uncertainty in efforts to predict carbon release from thawing permafrost and its impacts. The cold and often wet environment is the dominant factor limiting decomposer activity, and soil organic matter is often preserved in a relatively undecomposed and uncomplexed state. Thus, the impacts of soil warming and permafrost thaw are likely to depend at least initially on the genesis and past history of organic matter degradation before its stabilization in permafrost. We compared the bioavailability and relative degradation state of SOC in active layer and permafrost soils from Arctic tundra in Alaska. To assess readily bioavailable SOC, we quantified salt (0.5 M K2SO4) extractable organic matter (SEOM), which correlates well with carbon mineralization rates in short-term soil incubations. To assess the relative degradation state of SOC, we used particle size fractionation to isolate fibric (coarse) from more degraded (fine) particulate organic matter (POM) and separated mineral-associated organic matter into silt- and clay-sized fractions. On average, bulk SOC concentrations in permafrost were lower than in comparable active layer horizons. Although SEOM represented a very small proportion of the bulk SOC, this proportion was greater in permafrost than in comparable active layer soils. A large proportion of bulk SOC was found in POM for all horizons. Even for mineral soils, about 40% of bulk SOC was in POM pools, indicating that organic matter in both active layer and permafrost mineral soils was relatively undecomposed compared to typical temperate soils. Not surprisingly, organic soils had a greater proportion of POM and mineral soils had greater silt- and clay-sized carbon pools, while cryoturbated soils were intermediate. For organic horizons, permafrost organic matter was generally more degraded than in comparable active layer horizons. However, in mineral and cryoturbated horizons, the presence of permafrost appeared to have little effect on SOC distribution among size fractions. Future studies will investigate the utility of using organic matter pools defined by SEOM and particle size to predict the bioavailable pools characterized through more time-consuming long-term incubation studies of permafrost region soils. JF - American Geophysical Union Fall Meeting AU - Jastrow, J D AU - Burke, V J AU - Vugteveen, T W AU - Fan, Z AU - Hofmann, S M AU - Lederhouse, J S AU - Matamala, R AU - Michaelson, G J AU - Mishra, U AU - Ping, C L AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B31D EP - 0618 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797535112?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Bioavailable+carbon+and+the+relative+degradation+state+of+organic+matter+in+active+layer+and+permafrost+soils&rft.au=Jastrow%2C+J+D%3BBurke%2C+V+J%3BVugteveen%2C+T+W%3BFan%2C+Z%3BHofmann%2C+S+M%3BLederhouse%2C+J+S%3BMatamala%2C+R%3BMichaelson%2C+G+J%3BMishra%2C+U%3BPing%2C+C+L%3BAnonymous&rft.aulast=Jastrow&rft.aufirst=J&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterizing organic matter lability in Alaskan tundra soils using mid-infrared spectroscopy AN - 1797535067; 2016-050770 AB - Soils in permafrost regions contain large amounts of soil organic carbon (SOC) that is preserved in a relatively undecomposed state due to cold and often wet conditions, yet the potential lability of these SOC stocks is still largely unknown. Traditional methods of assessing SOC lability (e.g., laboratory incubation studies) are labor intensive and time consuming. Fourier-transform mid-infrared spectroscopy (MidIR) provides a means to quickly estimate SOC quantity and quality based on the wealth of spectral information. In this study, we explored the possibility of linking MidIR spectra with SOC lability in Arctic tundra soils. Soils from four sites on the North Slope of Alaska were used in this study: a wet non-acidic tundra site in the coastal plain (CP), two moist acidic tundra sites between the northern foothills and the coastal plain (HC and SH), and another moist acidic tundra site in the northern foothills (HV). Active-layer organic and mineral soils and upper permafrost soils from the four sites were incubated for 60 days at -1, 1, 4, 8 and 16 degrees C. Thawed soils were allowed to drain to field capacity. Carbon dioxide (CO2) production was measured throughout the study. The chemical composition (e.g., total organic carbon and nitrogen) and MidIR spectra of soil samples were obtained before and after the incubations. CO2 production varied among soils and temperatures. CO2 production was greatest at 16 degrees C for CP and SH organic layers and for HC and HV permafrost layers. These trends among soil layers and sites remained similar at all temperatures. We found a good correlation between MidIR and cumulative 60-day CO2 production across different soils and temperatures. Characteristic MidIR bands and band ratios previously identified in the literature were also correlated with total CO2 production. For example, several band ratios (such as the ratio of aliphatics to clay or the ratio of lignin or phenolics to minerals) in the mineral active layer were highly correlated with respired CO2, suggesting such ratios might serve as useful lability indicators. Further investigation of characteristic MidIR bands and band ratios for additional soils and for longer term incubations are needed to fully assess their utility as indicators of the relative degradation state and potential decomposability of permafrost-region soils. JF - American Geophysical Union Fall Meeting AU - Fan, Z AU - Matamala, R AU - Jastrow, J D AU - Liang, C AU - Calderon, F AU - Michaelson, G J AU - Ping, C L AU - Mishra, U AU - Hofmann, S M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B31D EP - 0597 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797535067?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Characterizing+organic+matter+lability+in+Alaskan+tundra+soils+using+mid-infrared+spectroscopy&rft.au=Fan%2C+Z%3BMatamala%2C+R%3BJastrow%2C+J+D%3BLiang%2C+C%3BCalderon%2C+F%3BMichaelson%2C+G+J%3BPing%2C+C+L%3BMishra%2C+U%3BHofmann%2C+S+M%3BAnonymous&rft.aulast=Fan&rft.aufirst=Z&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-06-17 N1 - CODEN - #07548 ER - TY - JOUR T1 - Towards a better understanding of the hydrologic setting of the Nubian Sandstone aquifer system; inferences from groundwater flow models, Cl-36 ages, and GRACE data AN - 1789753968; 2016-042514 AB - The Nubian Sandstone Aquifer System (NSAS), one of the largest (area: approximately 2X106 km2) groundwater systems worldwide, is formed of three major sub-basins: Kufra (Libya, NE Chad and NW Sudan), Dakhla (Egypt), and N. Sudan Platform (Sudan). To determine the mean residence time of water in the aquifer, the connectivity of its sub-basins and the groundwater flow across these sub-basins have to be understood. An integrated approach was adopted to address these issues using: (1) a regional calibrated groundwater flow model that simulates early (>10,000 years) steady-state conditions under wet climatic periods, and later (<10,000 years) transient conditions under arid condition; (2) 36Cl ages, and (3) GRACE solutions. Our findings include: (1) the NSAS was recharged (recharge: plains: 2-7 mm/yr; highlands 10-27 mm/yr) in the previous wet climatic periods on a regional scale, yet its outcrops are still receiving in dry periods appreciable precipitation over the highlands and modest (3.04+ or -1.10 km3/yr) local recharge; (2) a progressive increase in 36Cl groundwater ages were observed along groundwater flow directions and along structures that are sub-parallel to the groundwater flow direction; (3) the NE-SW Pelusium shear zone provides a preferred groundwater flow pathway from the Kufra to the Dakhla Sub-basin as evidenced by the relatively high hydraulic conductivities and relatively younger ages of groundwater along the shear zone compared to the groundwater ages in areas surrounding the shear zone; (4) the E-W trending Uweinat-Aswan basement uplift impedes groundwater flow from the N-Sudan Platform sub-basin as evidenced by the difference in groundwater isotopic compositions across the uplift, the depletion in GRACE-derived total water storage north but not south, of the uplift, and groundwater ages that are indicative of autochthonous precipitation and recharge over the Dakhla sub-basin. Our findings provide valuable insights into optimum ways for the utilization of the NSAS. Keywords: NSAS, Groundwater flow model, Ages data, isotopic data JF - American Geophysical Union Fall Meeting AU - Sultan, M AU - Mohamed, A AU - Yan, E AU - Ahmed, E AU - Sturchio, N C AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract A11E EP - 0095 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753968?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Towards+a+better+understanding+of+the+hydrologic+setting+of+the+Nubian+Sandstone+aquifer+system%3B+inferences+from+groundwater+flow+models%2C+Cl-36+ages%2C+and+GRACE+data&rft.au=Sultan%2C+M%3BMohamed%2C+A%3BYan%2C+E%3BAhmed%2C+E%3BSturchio%2C+N+C%3BAnonymous&rft.aulast=Sultan&rft.aufirst=M&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-05-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Water quality changes in acid mine drainage streams in Gangneung, Korea, 10 years after treatment with limestone AN - 1789753063; 2016-044093 AB - To determine the long-term effectiveness of the limestone treatment for acid mine drainage (AMD) in Gangneung, Korea, we investigated the elemental distribution in streams impacted by AMD and compared the results of previous studies before and approximately 10 years after the addition of limestone. Addition of limestone in 1999 leads to a pH increase in 2008, and with the exception of Ca, the elemental concentrations (e.g., Fe, Mn, Mg, Sr, Ni, Zn, S) in the streams decreased. The pH was 2.5-3 before the addition of limestone and remained stable at around 4.5-5 from 2008 to 2011, suggesting the reactivity of the added limestone was diminished and that an alternative approach is needed to increase the pH up to circumneutral range and maintain effective long-term treatment. To identify the processes causing the decrease in the elemental concentrations, we also examined the spatial (approximately 7 km) distribution over three different types of streams affected by the AMD. The elemental distribution was mainly controlled by physicochemical processes including redox reactions, dilution on mixing, and co-precipitation/adsorption with Fe (hydr)oxides. Abstract Copyright (2015) Elsevier, B.V. JF - Journal of Geochemical Exploration AU - Shim, Moo Joon AU - Choi, Byoung Young AU - Lee, Giehyeon AU - Hwang, Yun Ho AU - Yang, Jung-Seok AU - O'Loughlin, Edward J AU - Kwon, Man Jae Y1 - 2015/12// PY - 2015 DA - December 2015 SP - 234 EP - 242 PB - Elsevier, Amsterdam-New York VL - 159 SN - 0375-6742, 0375-6742 KW - limestone KW - water quality KW - electrical conductivity KW - Far East KW - X-ray diffraction data KW - isotopes KW - Imgok Creek KW - environmental analysis KW - stable isotopes KW - spatial distribution KW - sedimentary rocks KW - water treatment KW - X-ray fluorescence spectra KW - spectra KW - Asia KW - Young Dong Mine KW - water pollution KW - Eh KW - abandoned mines KW - Gangneung coal field KW - PHREEQC KW - mines KW - acid mine drainage KW - sulfates KW - Young Jin Mine KW - pollutants KW - isotope ratios KW - surface water KW - coal mines KW - pollution KW - adsorption KW - Korea KW - S-34/S-32 KW - precipitation KW - metals KW - sulfur KW - streams KW - trace metals KW - temporal distribution KW - carbonate rocks KW - South Korea KW - 02B:Hydrochemistry KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789753063?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geochemical+Exploration&rft.atitle=Water+quality+changes+in+acid+mine+drainage+streams+in+Gangneung%2C+Korea%2C+10+years+after+treatment+with+limestone&rft.au=Shim%2C+Moo+Joon%3BChoi%2C+Byoung+Young%3BLee%2C+Giehyeon%3BHwang%2C+Yun+Ho%3BYang%2C+Jung-Seok%3BO%27Loughlin%2C+Edward+J%3BKwon%2C+Man+Jae&rft.aulast=Shim&rft.aufirst=Moo&rft.date=2015-12-01&rft.volume=159&rft.issue=&rft.spage=234&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geochemical+Exploration&rft.issn=03756742&rft_id=info:doi/10.1016%2Fj.gexplo.2015.09.015 L2 - http://www.sciencedirect.com/science/journal/03756742 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 50 N1 - Document feature - illus. incl. 1 table, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2016-05-19 N1 - CODEN - JGCEAT N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; adsorption; Asia; carbonate rocks; coal mines; Eh; electrical conductivity; environmental analysis; Far East; Gangneung coal field; Imgok Creek; isotope ratios; isotopes; Korea; limestone; metals; mines; PHREEQC; pollutants; pollution; precipitation; S-34/S-32; sedimentary rocks; South Korea; spatial distribution; spectra; stable isotopes; streams; sulfates; sulfur; surface water; temporal distribution; trace metals; water pollution; water quality; water treatment; X-ray diffraction data; X-ray fluorescence spectra; Young Dong Mine; Young Jin Mine DO - http://dx.doi.org/10.1016/j.gexplo.2015.09.015 ER - TY - JOUR T1 - Numerical simulation and analysis of the April 2013 Chicago floods AN - 1784735644; 2016-035874 AB - The weather event associated to record Chicago floods on April 2013 is investigated by using the Weather Research and Forecasting (WRF) model. Observations at Argonne National Laboratory and multi-sensor (weather radar and rain gauge) precipitation data from the National Weather Service were employed to evaluate the model's performance. The WRF model captured the synoptic-scale atmospheric features well, but the simulated 24-h accumulated precipitation and short-period temporal evolution of precipitation over the heavy-rain region were less successful. To investigate the potential reasons for the model bias, four supplementary sensitivity experiments using various microphysics schemes and cumulus parameterizations were designed. Of the five tested parameterizations, the WRF Single-Moment 6-class (WSM6) graupel scheme and Kain-Fritsch (KF) cumulus parameterization outperformed the others, such as Grell-Devenyi (GD) cumulus parameterization, which underestimated the precipitation by 30-50% on a regional-average scale. Morrison microphysics and KF outperformed the others for the spatial patterns of 24-h accumulated precipitation. The spatial correlation between observation and Morrison-KF was 0.45, higher than those for other simulations. All of the simulations underestimated the precipitation over northeastern Illinois (especially at Argonne) during 0400-0800 UTC 18 April because of weak ascending motion or small moisture. All of the simulations except WSM6-GD also underestimated the precipitation during 1200-1600 UTC 18 April because of weak southerly flow. Abstract Copyright (2015) Elsevier, B.V. JF - Journal of Hydrology AU - Campos, Edwin AU - Wang, Jiali Y1 - 2015/12// PY - 2015 DA - December 2015 SP - 454 EP - 474 PB - Elsevier, Amsterdam VL - 531 IS - Part 2 SN - 0022-1694, 0022-1694 KW - United States KW - gauging KW - geologic hazards KW - rivers and streams KW - government agencies KW - WRF model KW - atmospheric precipitation KW - simulation KW - Chicago Illinois KW - NOAA KW - floods KW - drainage basins KW - weather research and forecasting model KW - meteorology KW - Cook County Illinois KW - Illinois KW - rainfall KW - numerical analysis KW - radar methods KW - prediction KW - models KW - mathematical methods KW - natural hazards KW - remote sensing KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784735644?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology&rft.atitle=Numerical+simulation+and+analysis+of+the+April+2013+Chicago+floods&rft.au=Campos%2C+Edwin%3BWang%2C+Jiali&rft.aulast=Campos&rft.aufirst=Edwin&rft.date=2015-12-01&rft.volume=531&rft.issue=Part+2&rft.spage=454&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2015.09.004 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2016-01-01 N1 - Number of references - 51 N1 - Document feature - illus. incl. 5 tables, sketch maps N1 - Last updated - 2016-04-28 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - atmospheric precipitation; Chicago Illinois; Cook County Illinois; drainage basins; floods; gauging; geologic hazards; government agencies; Illinois; mathematical methods; meteorology; models; natural hazards; NOAA; numerical analysis; prediction; radar methods; rainfall; remote sensing; rivers and streams; simulation; United States; weather research and forecasting model; WRF model DO - http://dx.doi.org/10.1016/j.jhydrol.2015.09.004 ER - TY - JOUR T1 - Electron-bifurcating transhydrogenase is central to hydrogen isotope fractionation during lipid biosynthesis in sulfate reducing bacteria AN - 1777472930; 2016-028105 AB - A significant range in microbial lipid (super 2) H/ (super 1) H ratios is observed in modern marine sediments [Li et al. 2009. GCA]. The magnitude of hydrogen isotope fractionation between microbial lipids and growth water ( (super 2) epsilon (sub lipid-H2O) ) is hypothesized to relate to the central carbon and energy metabolism [Zhang et al. 2009. PNAS]. These observations have raised the intriguing possibility for culture independent identification of the dominant metabolic pathways operating in environments critical to the geological record. One such metabolism we would like to track for its global significance in sedimentary carbon cycling is bacterial sulfate reduction [Jorgensen. 1982. Nature]. To-date, heterotrophic sulfate reducing bacteria (SRB) have been observed to produce lipids that are depleted in fatty acid H-isotope composition, relative to growth water ( (super 2) epsilon (sub lipid-H2O) approximately -125 to -175 ppm), with experiments on different substrates yielding little variability [Campbell et al. 2009. GCA; Osburn. 2013; Dawson et al. 2015. Geobiology]. In stark contrast, aerobic heterotrophs show a wide range in fractionations ( (super 2) epsilon (sub lipid-H2O) approximately +300 to -125 ppm) which seems to scale with the route cellular carbon metabolism [Zhang et al. 2009. PNAS; Heinzelmann et al. 2015. Front Microbio]. Recent work in aerobic methylotrophs [Bradley et al. 2014. AGU] implicates transhydrogenase (TH) activity as a critical control on (super 2) epsilon (sub lipid-H2O) . This work suggests a specific driving mechanism for this range in fractionation is the ratio of intracellular NADPH/NADH, and more fundamentally, the intracellular redox state. In SRB a key component of energy metabolism is the activity of electron-bifurcating TH [Price et al. 2014. Front Microbio], for which a recent transposon mutant library has generated a number of knockouts in the target gene [Kuehl et al. 2014. mBio] in the model organism Desulfovibrio alaskensis strain G20. In this study we compare growth rates, fatty acid concentrations and (super 2) epsilon (sub lipid-H2O) from wild type and TH mutants in strain G20. We observed significant growth rate and isotopic phenotypes as a function of substrate when the TH is involved in carbon and energy metabolism. We discuss implications for understanding H-isotope fractionation during microbial fatty acid biosynthesis in sulfate reducers and anaerobes in general in anoxic environments. JF - American Geophysical Union Fall Meeting AU - Leavitt, William AU - Flynn, Theodore M AU - Suess, Melanie AU - Bradley, Alexander S AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B21A EP - 0412 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777472930?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Electron-bifurcating+transhydrogenase+is+central+to+hydrogen+isotope+fractionation+during+lipid+biosynthesis+in+sulfate+reducing+bacteria&rft.au=Leavitt%2C+William%3BFlynn%2C+Theodore+M%3BSuess%2C+Melanie%3BBradley%2C+Alexander+S%3BAnonymous&rft.aulast=Leavitt&rft.aufirst=William&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2017-01-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Biogeochemistry of antimony(V) in microcosms under sulfidogenic conditions AN - 1777472822; 2016-028127 AB - As the mining and use of antimony continues to increase, environmental concerns involving the element have grown. Antimony(V) and (III) are the two most environmentally-relevant oxidation states, but little is known about the redox transitions between the two in natural systems. To better understand the behavior of antimony in anoxic environments, we examined the transformations of Sb(V) under Fe(III)- and sulfate-reducing conditions in aqueous suspensions that contained 2 mM KSb(OH) (sub 6) , 50 mM Fe(III) (as ferrihydrite), 10 mM sulfate, and 10 mM lactate, and were inoculated with sediment from a wetland on the campus of Argonne National Laboratory in Argonne, Illinois. Samples were collected over time to track changes in the concentrations of Sb, Fe(II), sulfate, and lactate, as well as the composition of the microbial community as determined by 16S rRNA gene inventories. We also examined the interaction of Sb(V) with pure Fe(II) mineral phases in aqueous suspensions containing 2 mM KSb(OH) (sub 6) and 50 mM Fe(II) as either magnetite, siderite, vivianite, green rust, or mackinawite. X-ray absorption fine-structure spectroscopy was used to determine the valence state of Sb and its chemical speciation. Lactate was rapidly fermented to acetate and propionate concomittant with a bloom of Veillonellaceae. Utilization of propionate for dissimilatory sulfate reduction (DSR) was accompanied by an increase in Desulfobulbaceae. Sb K-edge X-Ray absorption near edge structure (XANES) analysis showed reduction of Sb(V) to Sb(III) within 4 weeks, concurrent with DSR and the formation of FeS. We observed variable responses in the ability of specific Fe(II) minerals to reduce Sb(V). No reduction was observed with magnetite, siderite, vivianite, or green rust. In the presence of mackinawite (FeS), however, Sb(V) was reduced to Sb(III) sulfide. These results suggest that the reduction of Sb(V) to Sb(III) is not likely under solely Fe(III)-reducing conditions, but is expected in sulfidogenic environments. JF - American Geophysical Union Fall Meeting AU - O'Loughlin, Edward J AU - Johnson, Clayton R AU - Antonopoulos, Dionysios A AU - Boyanov, Maxim AU - Flynn, Theodore M AU - Koval, Jason C AU - Kemner, Ken M AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B21C EP - 0444 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777472822?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Biogeochemistry+of+antimony%28V%29+in+microcosms+under+sulfidogenic+conditions&rft.au=O%27Loughlin%2C+Edward+J%3BJohnson%2C+Clayton+R%3BAntonopoulos%2C+Dionysios+A%3BBoyanov%2C+Maxim%3BFlynn%2C+Theodore+M%3BKoval%2C+Jason+C%3BKemner%2C+Ken+M%3BAnonymous&rft.aulast=O%27Loughlin&rft.aufirst=Edward&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2017-01-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Investigating redox processes under diffusive and advective flow conditions using a coupled omics and synchrotron approach AN - 1777472614; 2016-028136 AB - Fe (super III) - and SO (sub 4) (super 2-) -reducing microorganisms and the mineral phases they produce have profound implications for many processes in aquatic and terrestrial systems. In addition, many of these microbially-catalysed geochemical transformations are highly dependent upon introduction of reactants via advective and diffusive hydrological transport. We have characterized microbial communities from a set of static microcosms to test the effect of ethanol diffusion and sulfate concentration on UVI-contaminated sediment. The spatial distribution, valence states, and speciation of both U and Fe were monitored in situ throughout the experiment by synchrotron x-ray absorption spectroscopy, in parallel with solution measurements of pH and the concentrations of sulfate, ethanol, and organic acids. After reaction initiation, a approximately 1-cm thick layer of sediment near the sediment-water (S-W) interface became visibly dark. Fe XANES spectra of the layer were consistent with the formation of FeS. Over the 4 year duration of the experiment, U L (sub III) -edge XANES indicated reduction of U, first in the dark layer and then throughout the sediment. Next, the microcosms were disassembled and samples were taken from the overlying water and different sediment regions. We extracted DNA and characterized the microbial community by sequencing 16S rRNA gene amplicons with the Illumina MiSeq platform and found that the community evolved from its originally homogeneous composition, becoming significantly spatially heterogeneous. We have also developed an x-ray accessible column to probe elemental transformations as they occur along the flow path in a porous medium with the purpose of refining reactive transport models (RTMs) that describe coupled physical and biogeochemical processes in environmental systems. The elemental distribution dynamics and the RTMs of the redox driven processes within them will be presented. JF - American Geophysical Union Fall Meeting AU - Kemner, Ken M AU - Boyanov, Maxim AU - Flynn, Theodore M AU - O'Loughlin, Edward J AU - Antonopoulos, Dionysios A AU - Kelly, Shelly D AU - Skinner, Kelly AU - Mishra, Bhoopesh AU - Brooks, Scott C AU - Watson, David B AU - Wu, Wei-Min AU - Anonymous Y1 - 2015/12// PY - 2015 DA - December 2015 SP - Abstract B21C EP - 0459 PB - American Geophysical Union, Washington, DC VL - 2015 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777472614?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Investigating+redox+processes+under+diffusive+and+advective+flow+conditions+using+a+coupled+omics+and+synchrotron+approach&rft.au=Kemner%2C+Ken+M%3BBoyanov%2C+Maxim%3BFlynn%2C+Theodore+M%3BO%27Loughlin%2C+Edward+J%3BAntonopoulos%2C+Dionysios+A%3BKelly%2C+Shelly+D%3BSkinner%2C+Kelly%3BMishra%2C+Bhoopesh%3BBrooks%2C+Scott+C%3BWatson%2C+David+B%3BWu%2C+Wei-Min%3BAnonymous&rft.aulast=Kemner&rft.aufirst=Ken&rft.date=2015-12-01&rft.volume=2015&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2015 fall meeting N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2017-01-19 N1 - CODEN - #07548 ER - TY - JOUR T1 - Structure-based approach to the identification of a novel group of selective glucosamine analogue inhibitors of Trypanosoma cruzi glucokinase. AN - 1774164538; 26778112 AB - Glucokinase and hexokinase from pathogenic protozoa Trypanosoma cruzi are potential drug targets for antiparasitic chemotherapy of Chagas' disease. These glucose kinases phosphorylate d-glucose with co-substrate ATP and yield glucose 6-phosphate and are involved in essential metabolic pathways, such as glycolysis and the pentose phosphate pathway. An inhibitor class was conceived that is selective for T. cruzi glucokinase (TcGlcK) using structure-based drug design involving glucosamine having a linker from the C2 amino that terminates with a hydrophobic group either being phenyl, p-hydroxyphenyl, or dioxobenzo[b]thiophenyl groups. The synthesis and characterization for two of the four compounds are presented while the other two compounds were commercially available. Four high-resolution X-ray crystal structures of TcGlcK inhibitor complexes are reported along with enzyme inhibition constants (Ki) for TcGlcK and Homo sapiens hexokinase IV (HsHxKIV). These glucosamine analogue inhibitors include three strongly selective TcGlcK inhibitors and a fourth inhibitor, benzoyl glucosamine (BENZ-GlcN), which is a similar variant exhibiting a shorter linker. Carboxybenzyl glucosamine (CBZ-GlcN) was found to be the strongest glucokinase inhibitor known to date, having a Ki of 0.71±0.05μM. Also reported are two biologically active inhibitors against in vitro T. cruzi culture that were BENZ-GlcN and CBZ-GlcN, with intracellular amastigote growth inhibition IC50 values of 16.08±0.16μM and 48.73±0.69μM, respectively. These compounds revealed little to no toxicity against mammalian NIH-3T3 fibroblasts and provide a key starting point for further drug development with this class of compound. JF - Molecular and biochemical parasitology AU - D'Antonio, Edward L AU - Deinema, Mason S AU - Kearns, Sean P AU - Frey, Tyler A AU - Tanghe, Scott AU - Perry, Kay AU - Roy, Timothy A AU - Gracz, Hanna S AU - Rodriguez, Ana AU - D'Antonio, Jennifer AD - Department of Natural Sciences, University of South Carolina Beaufort, 1 University Boulevard, Bluffton, South Carolina 29909, USA. Electronic address: edantonio@uscb.edu. ; Department of Natural Sciences, University of South Carolina Beaufort, 1 University Boulevard, Bluffton, South Carolina 29909, USA. ; Department of Microbiology, New York University School of Medicine, 550 First Avenue, New York, New York 10016, USA. ; NE-CAT, Department of Chemistry and Chemical Biology, Cornell University, Building 436E, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA. ; Department of Molecular and Structural Biochemistry, North Carolina State University, 128 Polk Hall, Raleigh, North Carolina 27695, USA. Y1 - 2015/12// PY - 2015 DA - December 2015 SP - 64 EP - 76 VL - 204 IS - 2 KW - Antiprotozoal Agents KW - 0 KW - Enzyme Inhibitors KW - Protozoan Proteins KW - Glucokinase KW - EC 2.7.1.2 KW - Glucosamine KW - N08U5BOQ1K KW - Index Medicus KW - Trypanosoma cruzi KW - Hexokinase KW - Structure-based drug design KW - Chagas’ disease KW - Chagas Disease -- parasitology KW - Models, Molecular KW - Kinetics KW - Humans KW - Drug Design KW - Protozoan Proteins -- metabolism KW - Trypanosoma cruzi -- enzymology KW - Antiprotozoal Agents -- metabolism KW - Enzyme Inhibitors -- chemistry KW - Protozoan Proteins -- genetics KW - Glucokinase -- genetics KW - Glucokinase -- metabolism KW - Antiprotozoal Agents -- chemistry KW - Protozoan Proteins -- chemistry KW - Trypanosoma cruzi -- drug effects KW - Protozoan Proteins -- antagonists & inhibitors KW - Glucokinase -- chemistry KW - Glucokinase -- antagonists & inhibitors KW - Glucosamine -- analogs & derivatives KW - Trypanosoma cruzi -- genetics KW - Glucosamine -- metabolism KW - Enzyme Inhibitors -- metabolism KW - Trypanosoma cruzi -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1774164538?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+and+biochemical+parasitology&rft.atitle=Structure-based+approach+to+the+identification+of+a+novel+group+of+selective+glucosamine+analogue+inhibitors+of+Trypanosoma+cruzi+glucokinase.&rft.au=D%27Antonio%2C+Edward+L%3BDeinema%2C+Mason+S%3BKearns%2C+Sean+P%3BFrey%2C+Tyler+A%3BTanghe%2C+Scott%3BPerry%2C+Kay%3BRoy%2C+Timothy+A%3BGracz%2C+Hanna+S%3BRodriguez%2C+Ana%3BD%27Antonio%2C+Jennifer&rft.aulast=D%27Antonio&rft.aufirst=Edward&rft.date=2015-12-01&rft.volume=204&rft.issue=2&rft.spage=64&rft.isbn=&rft.btitle=&rft.title=Molecular+and+biochemical+parasitology&rft.issn=1872-9428&rft_id=info:doi/10.1016%2Fj.molbiopara.2015.12.004 LA - 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Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.molbiopara.2015.12.004 ER - TY - JOUR T1 - Gene selection and cloning approaches for co-expression and production of recombinant protein-protein complexes AN - 1762361898; PQ0002469857 AB - Multiprotein complexes play essential roles in all cells and X-ray crystallography can provide unparalleled insight into their structure and function. Many of these complexes are believed to be sufficiently stable for structural biology studies, but the production of protein-protein complexes using recombinant technologies is still labor-intensive. We have explored several strategies for the identification and cloning of heterodimers and heterotrimers that are compatible with the high-throughput (HTP) structural biology pipeline developed for single proteins. Two approaches are presented and compared which resulted in co-expression of paired genes from a single expression vector. Native operons encoding predicted interacting proteins were selected from a repertoire of genomes, and cloned directly to expression vector. In an alternative approach, Helicobacter pylori proteins predicted to interact strongly were cloned, each associated with translational control elements, then linked into an artificial operon. Proteins were then expressed and purified by standard HTP protocols, resulting to date in the structure determination of two H. pylori complexes. JF - Journal of Structural and Functional Genomics AU - Babnigg, Gyorgy AU - Jedrzejczak, Robert AU - Nocek, Boguslaw AU - Stein, Adam AU - Eschenfeldt, William AU - Stols, Lucy AU - Marshall, Norman AU - Weger, Alicia AU - Wu, Ruiying AU - Donnelly, Mark AU - Joachimiak, Andrzej AD - Midwest Center for Structural Genomics, Biosciences Division, Argonne National Laboratory, 9700 S Cass Ave., Argonne, IL, 60439, USA, gbabnigg@anl.gov Y1 - 2015/12// PY - 2015 DA - December 2015 SP - 113 EP - 128 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 16 IS - 3-4 SN - 1345-711X, 1345-711X KW - Biotechnology and Bioengineering Abstracts; Genetics Abstracts KW - Expression vectors KW - X-ray crystallography KW - Helicobacter pylori KW - Translation KW - Structure-function relationships KW - Operons KW - W 30905:Medical Applications KW - G 07770:Bacteria UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762361898?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Structural+and+Functional+Genomics&rft.atitle=Gene+selection+and+cloning+approaches+for+co-expression+and+production+of+recombinant+protein-protein+complexes&rft.au=Babnigg%2C+Gyorgy%3BJedrzejczak%2C+Robert%3BNocek%2C+Boguslaw%3BStein%2C+Adam%3BEschenfeldt%2C+William%3BStols%2C+Lucy%3BMarshall%2C+Norman%3BWeger%2C+Alicia%3BWu%2C+Ruiying%3BDonnelly%2C+Mark%3BJoachimiak%2C+Andrzej&rft.aulast=Babnigg&rft.aufirst=Gyorgy&rft.date=2015-12-01&rft.volume=16&rft.issue=3-4&rft.spage=113&rft.isbn=&rft.btitle=&rft.title=Journal+of+Structural+and+Functional+Genomics&rft.issn=1345711X&rft_id=info:doi/10.1007%2Fs10969-015-9200-y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Number of references - 70 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - X-ray crystallography; Expression vectors; Translation; Structure-function relationships; Operons; Helicobacter pylori DO - http://dx.doi.org/10.1007/s10969-015-9200-y ER - TY - JOUR T1 - Inhibiting oral intoxication of botulinum neurotoxin A complex by carbohydrate receptor mimics. AN - 1736411185; 26272706 AB - Botulinum neurotoxins (BoNTs) cause the disease botulism manifested by flaccid paralysis that could be fatal to humans and animals. Oral ingestion of the toxin with contaminated food is one of the most common routes for botulism. BoNT assembles with several auxiliary proteins to survive in the gastrointestinal tract and is subsequently transported through the intestinal epithelium into the general circulation. Several hemagglutinin proteins form a multi-protein complex (HA complex) that recognizes host glycans on the intestinal epithelial cell surface to facilitate BoNT absorption. Blocking carbohydrate binding to the HA complex could significantly inhibit the oral toxicity of BoNT. Here, we identify lactulose, a galactose-containing non-digestible sugar commonly used to treat constipation, as a prototype inhibitor against oral BoNT/A intoxication. As revealed by a crystal structure, lactulose binds to the HA complex at the same site where the host galactose-containing carbohydrate receptors bind. In vitro assays using intestinal Caco-2 cells demonstrated that lactulose inhibits HA from compromising the integrity of the epithelial cell monolayers and blocks the internalization of HA. Furthermore, co-administration of lactulose significantly protected mice against BoNT/A oral intoxication in vivo. Taken together, these data encourage the development of carbohydrate receptor mimics as a therapeutic intervention to prevent BoNT oral intoxication. JF - Toxicon : official journal of the International Society on Toxinology AU - Lee, Kwangkook AU - Lam, Kwok-Ho AU - Kruel, Anna-Magdalena AU - Mahrhold, Stefan AU - Perry, Kay AU - Cheng, Luisa W AU - Rummel, Andreas AU - Jin, Rongsheng AD - Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA. ; Institut für Toxikologie, Medizinische Hochschule Hannover, Hannover, Germany. ; NE-CAT and Department of Chemistry and Chemical Biology, Cornell University, Building 436E, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA. ; Foodborne Toxin Detection and Prevention Research Unit, Western Regional Research Center, United States Department of Agriculture, Agricultural Research Service, Albany, CA 94710, USA. ; Institut für Toxikologie, Medizinische Hochschule Hannover, Hannover, Germany. Electronic address: rummel.andreas@mh-hannover.de. ; Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA. Electronic address: r.jin@uci.edu. Y1 - 2015/12/01/ PY - 2015 DA - 2015 Dec 01 SP - 43 EP - 49 VL - 107 KW - Hemagglutinins KW - 0 KW - Isopropyl Thiogalactoside KW - 367-93-1 KW - Lactulose KW - 4618-18-2 KW - Botulinum Toxins, Type A KW - EC 3.4.24.69 KW - Index Medicus KW - Carbohydrate receptor KW - Progenitor toxin complex KW - Inhibitor KW - Botulinum neurotoxin KW - Hemagglutinin KW - Administration, Oral KW - Animals KW - Caco-2 Cells -- drug effects KW - Botulism -- prevention & control KW - Protein Binding -- drug effects KW - Humans KW - Mice KW - Crystallography, X-Ray KW - Isopropyl Thiogalactoside -- pharmacology KW - Female KW - Botulinum Toxins, Type A -- administration & dosage KW - Hemagglutinins -- metabolism KW - Botulinum Toxins, Type A -- toxicity KW - Botulinum Toxins, Type A -- antagonists & inhibitors KW - Lactulose -- pharmacology KW - Lactulose -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1736411185?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Toxicon+%3A+official+journal+of+the+International+Society+on+Toxinology&rft.atitle=Inhibiting+oral+intoxication+of+botulinum+neurotoxin+A+complex+by+carbohydrate+receptor+mimics.&rft.au=Lee%2C+Kwangkook%3BLam%2C+Kwok-Ho%3BKruel%2C+Anna-Magdalena%3BMahrhold%2C+Stefan%3BPerry%2C+Kay%3BCheng%2C+Luisa+W%3BRummel%2C+Andreas%3BJin%2C+Rongsheng&rft.aulast=Lee&rft.aufirst=Kwangkook&rft.date=2015-12-01&rft.volume=107&rft.issue=&rft.spage=43&rft.isbn=&rft.btitle=&rft.title=Toxicon+%3A+official+journal+of+the+International+Society+on+Toxinology&rft.issn=1879-3150&rft_id=info:doi/10.1016%2Fj.toxicon.2015.08.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-09-19 N1 - Date created - 2015-11-23 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 5BQU; PDB; 5BP5 N1 - SuppNotes - Cited By: FEMS Microbiol Lett. 1998 Jan 15;158(2):215-21 [9465394] Infect Immun. 1998 Apr;66(4):1439-44 [9529065] J Mol Biol. 2005 Mar 4;346(4):1083-93 [15701519] Cell Microbiol. 2008 Feb;10(2):355-64 [17868282] Cell Microbiol. 2008 Feb;10(2):375-87 [17900298] Toxicology. 2008 Jul 30;249(2-3):123-9 [18538461] Acta Crystallogr D Biol Crystallogr. 2010 Jan;66(Pt 1):12-21 [20057044] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] Acta Crystallogr D Biol Crystallogr. 2010 Apr;66(Pt 4):486-501 [20383002] J Cell Biol. 2010 May 17;189(4):691-700 [20457762] Hum Vaccin. 2009 Dec;5(12):794-805 [19684478] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):235-42 [21460441] Bioeng Bugs. 2010 Jan-Feb;1(1):17-30 [21327124] Science. 2012 Feb 24;335(6071):977-81 [22363010] Curr Top Microbiol Immunol. 2013;364:1-20 [23239346] Curr Top Microbiol Immunol. 2013;364:21-44 [23239347] Proc Natl Acad Sci U S A. 2013 Apr 2;110(14):5630-5 [23509303] Chem Soc Rev. 2013 Jun 7;42(11):4709-27 [23254759] PLoS Pathog. 2013;9(10):e1003690 [24130488] J Biol Chem. 2013 Dec 6;288(49):35617-25 [24165130] Toxins (Basel). 2014 Feb;6(2):624-35 [24525478] Biochem Biophys Res Commun. 2014 Apr 4;446(2):568-73 [24631690] Science. 2014 Jun 20;344(6190):1405-10 [24948737] Nat Rev Microbiol. 2014 Aug;12(8):535-49 [24975322] PLoS One. 2014;9(10):e111170 [25340348] Nat Commun. 2015;6:6255 [25687350] Curr Opin Struct Biol. 2015 Apr;31:89-95 [25889616] JAMA. 2001 Feb 28;285(8):1059-70 [11209178] J Am Chem Soc. 2002 Nov 6;124(44):12991-8 [12405825] Mol Microbiol. 2004 Feb;51(3):631-43 [14731268] Gut. 1968 Feb;9(1):84-6 [4867936] Infect Immun. 1977 Apr;16(1):107-9 [326664] Infect Immun. 1984 Feb;43(2):487-90 [6693168] Eur J Biochem. 1985 Aug 15;151(1):75-82 [3896784] Lancet. 1996 Apr 13;347(9007):1017-21 [8606566] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.toxicon.2015.08.003 ER - TY - JOUR T1 - MINEs: open access databases of computationally predicted enzyme promiscuity products for untargeted metabolomics AN - 1722184760; PQ0002074049 AB - Background: In spite of its great promise, metabolomics has proven difficult to execute in an untargeted and generalizable manner. Liquid chromatography-mass spectrometry (LC-MS) has made it possible to gather data on thousands of cellular metabolites. However, matching metabolites to their spectral features continues to be a bottleneck, meaning that much of the collected information remains uninterpreted and that new metabolites are seldom discovered in untargeted studies. These challenges require new approaches that consider compounds beyond those available in curated biochemistry databases. Description: Here we present Metabolic In silico Network Expansions (MINEs), an extension of known metabolite databases to include molecules that have not been observed, but are likely to occur based on known metabolites and common biochemical reactions. We utilize an algorithm called the Biochemical Network Integrated Computational Explorer (BNICE) and expert-curated reaction rules based on the Enzyme Commission classification system to propose the novel chemical structures and reactions that comprise MINE databases. Starting from the Kyoto Encyclopedia of Genes and Genomes (KEGG) COMPOUND database, the MINE contains over 571,000 compounds, of which 93% are not present in the PubChem database. However, these MINE compounds have on average higher structural similarity to natural products than compounds from KEGG or PubChem. MINE databases were able to propose annotations for 98.6% of a set of 667 MassBank spectra, 14% more than KEGG alone and equivalent to PubChem while returning far fewer candidates per spectra than PubChem (46 vs. 1715 median candidates). Application of MINEs to LC-MS accurate mass data enabled the identity of an unknown peak to be confidently predicted. Conclusions: MINE databases are freely accessible for non-commercial use via user-friendly web-tools at http://minedatabase.mcs.anl.gov and developer-friendly APIs. MINEs improve metabolomics peak identification as compared to general chemical databases whose results include irrelevant synthetic compounds. Furthermore, MINEs complement and expand on previous in silico generated compound databases that focus on human metabolism. We are actively developing the database; future versions of this resource will incorporate transformation rules for spontaneous chemical reactions and more advanced filtering and prioritization of candidate structures. [Figure not available: see fulltext. Caption: MINE database construction and access methods. The process of constructing a MINE database from the curated source databases is depicted on the left. The methods for accessing the database are shown on the right.] JF - Journal of Cheminformatics AU - Jeffryes, James G AU - Colastani, Ricardo L AU - Elbadawi-Sidhu, Mona AU - Kind, Tobias AU - Niehaus, Thomas D AU - Broadbelt, Linda J AU - Hanson, Andrew D AU - Fiehn, Oliver AU - Tyo, Keith E J AU - Henry, Christopher S AD - Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA, chenry@mcs.anl.gov Y1 - 2015/12// PY - 2015 DA - Dec 2015 SP - 1 EP - 8 PB - Springer-Verlag (Heidelberg), Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 7 IS - 1 KW - Biotechnology and Bioengineering Abstracts KW - Classification systems KW - Transformation KW - Genomes KW - Data processing KW - Informatics KW - Algorithms KW - Enzymes KW - natural products KW - Metabolites KW - Mines KW - Computer applications KW - Spectrometry KW - Computer programs KW - Databases KW - metabolomics KW - W 30960:Bioinformatics & Computer Applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722184760?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Cheminformatics&rft.atitle=MINEs%3A+open+access+databases+of+computationally+predicted+enzyme+promiscuity+products+for+untargeted+metabolomics&rft.au=Jeffryes%2C+James+G%3BColastani%2C+Ricardo+L%3BElbadawi-Sidhu%2C+Mona%3BKind%2C+Tobias%3BNiehaus%2C+Thomas+D%3BBroadbelt%2C+Linda+J%3BHanson%2C+Andrew+D%3BFiehn%2C+Oliver%3BTyo%2C+Keith+E+J%3BHenry%2C+Christopher+S&rft.aulast=Jeffryes&rft.aufirst=James&rft.date=2015-12-01&rft.volume=7&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Cheminformatics&rft.issn=1758-2946&rft_id=info:doi/10.1186%2Fs13321-015-0087-1 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Number of references - 47 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Genomes; Transformation; Classification systems; Data processing; Informatics; Algorithms; Enzymes; Metabolites; natural products; Computer applications; Mines; Spectrometry; Databases; Computer programs; metabolomics DO - http://dx.doi.org/10.1186/s13321-015-0087-1 ER - TY - JOUR T1 - PVP-Assisted Synthesis of Uniform Carbon Coated Li2S/CB for High-Performance Lithium-Sulfur Batteries. AN - 1736679616; 26529481 AB - The lithium-sulfur (Li-S) battery is a great alternative to the state-of-the-art lithium ion batteries due to its high energy density. However, low utilization of active materials, the insulating nature of sulfur or lithium sulfide (Li2S), and polysulfide dissolution in organic liquid electrolyte lead to low initial capacity and fast performance degradation. Herein, we propose a facile and viable approach to address these issues. This new approach entails synthesis of Li2S/carbon black (Li2S/CB) cores encapsulated by a nitrogen-doped carbon shell with polyvinylpyrrolidone (PVP) assistance. Combining energy-filtered transmission electron microscopy (EFTEM) elemental mappings, XPS and FTIR measurements, it is confirmed that the as-synthesized material has a structure of a Li2S/CB core with a nitrogen-doped carbon shell (denoted as Li2S/CB@NC). The Li2S/CB@NC cathode yields an exceptionally high initial capacity of 1020 mAh/g based on Li2S mass at 0.1 C with stable Coulombic efficiency of 99.7% over 200 cycles. Also, cycling performance shows the capacity decay per cycle as small as 0.17%. Most importantly, to further understand the materials for battery applications, field emission transmission electron microscopy (FETEM) and elemental mapping tests without exposure to air for Li2S samples in cycled cells are reported. Along with the first ever FETEM and field emission scanning electron microscopy (FESEM) investigations of cycled batteries, Li2S/CB@NC cathode demonstrates the capability of robust core-shell nanostructures for different rates and improved capacity retention, revealing Li2S/CB@NC designed here as an outstanding system for high-performance lithium-sulfur batteries. JF - ACS applied materials & interfaces AU - Chen, Lin AU - Liu, Yuzi AU - Zhang, Fan AU - Liu, Caihong AU - Shaw, Leon L AD - Wanger Institute for Sustainable Energy Research, Illinois Institute of Technology , Chicago, Illinois 60616, United States. ; Center for Nanoscale Materials, Argonne National Laboratory , Lemont, Illinois 60439, United States. Y1 - 2015/11/25/ PY - 2015 DA - 2015 Nov 25 SP - 25748 EP - 25756 VL - 7 IS - 46 KW - lithium−sulfur batteries KW - post testing KW - lithium sulfide KW - core−shell KW - cycled cells UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1736679616?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+applied+materials+%26+interfaces&rft.atitle=PVP-Assisted+Synthesis+of+Uniform+Carbon+Coated+Li2S%2FCB+for+High-Performance+Lithium-Sulfur+Batteries.&rft.au=Chen%2C+Lin%3BLiu%2C+Yuzi%3BZhang%2C+Fan%3BLiu%2C+Caihong%3BShaw%2C+Leon+L&rft.aulast=Chen&rft.aufirst=Lin&rft.date=2015-11-25&rft.volume=7&rft.issue=46&rft.spage=25748&rft.isbn=&rft.btitle=&rft.title=ACS+applied+materials+%26+interfaces&rft.issn=1944-8252&rft_id=info:doi/10.1021%2Facsami.5b07331 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-03-17 N1 - Date created - 2015-11-25 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsami.5b07331 ER - TY - JOUR T1 - Structure of a eukaryotic SWEET transporter in a homotrimeric complex. AN - 1733189160; 26479032 AB - Eukaryotes rely on efficient distribution of energy and carbon skeletons between organs in the form of sugars. Glucose in animals and sucrose in plants serve as the dominant distribution forms. Cellular sugar uptake and release require vesicular and/or plasma membrane transport proteins. Humans and plants use proteins from three superfamilies for sugar translocation: the major facilitator superfamily (MFS), the sodium solute symporter family (SSF; only in the animal kingdom), and SWEETs. SWEETs carry mono- and disaccharides across vacuolar or plasma membranes. Plant SWEETs play key roles in sugar translocation between compartments, cells, and organs, notably in nectar secretion, phloem loading for long distance translocation, pollen nutrition, and seed filling. Plant SWEETs cause pathogen susceptibility possibly by sugar leakage from infected cells. The vacuolar Arabidopsis thaliana AtSWEET2 sequesters sugars in root vacuoles; loss-of-function mutants show increased susceptibility to Pythium infection. Here we show that its orthologue, the vacuolar glucose transporter OsSWEET2b from rice (Oryza sativa), consists of an asymmetrical pair of triple-helix bundles, connected by an inversion linker transmembrane helix (TM4) to create the translocation pathway. Structural and biochemical analyses show OsSWEET2b in an apparent inward (cytosolic) open state forming homomeric trimers. TM4 tightly interacts with the first triple-helix bundle within a protomer and mediates key contacts among protomers. Structure-guided mutagenesis of the close paralogue SWEET1 from Arabidopsis identified key residues in substrate translocation and protomer crosstalk. Insights into the structure-function relationship of SWEETs are valuable for understanding the transport mechanism of eukaryotic SWEETs and may be useful for engineering sugar flux. JF - Nature AU - Tao, Yuyong AU - Cheung, Lily S AU - Li, Shuo AU - Eom, Joon-Seob AU - Chen, Li-Qing AU - Xu, Yan AU - Perry, Kay AU - Frommer, Wolf B AU - Feng, Liang AD - Department of Molecular and Cellular Physiology, 279 Campus Drive, Stanford University School of Medicine, Stanford, California 94305, USA. ; Carnegie Institution for Science, Department of Plant Biology, 260 Panama Street, Stanford, California 94305, USA. ; NE-CAT and Dep. of Chemistry and Chemical Biology, Cornell University, Building 436E, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA. Y1 - 2015/11/12/ PY - 2015 DA - 2015 Nov 12 SP - 259 EP - 263 VL - 527 IS - 7577 KW - Arabidopsis Proteins KW - 0 KW - Glucose Transport Proteins, Facilitative KW - Monosaccharide Transport Proteins KW - Plant Proteins KW - SWEET1 protein, Arabidopsis KW - Index Medicus KW - Protein Structure, Secondary KW - Monosaccharide Transport Proteins -- chemistry KW - Models, Molecular KW - HEK293 Cells KW - Humans KW - Arabidopsis -- chemistry KW - Biological Transport KW - Structure-Activity Relationship KW - Protein Structure, Quaternary KW - Monosaccharide Transport Proteins -- metabolism KW - Arabidopsis Proteins -- genetics KW - Phloem KW - Crystallography, X-Ray KW - Monosaccharide Transport Proteins -- genetics KW - Arabidopsis Proteins -- metabolism KW - Arabidopsis Proteins -- chemistry KW - Plant Proteins -- chemistry KW - Glucose Transport Proteins, Facilitative -- genetics KW - Oryza -- chemistry KW - Glucose Transport Proteins, Facilitative -- metabolism KW - Plant Proteins -- metabolism KW - Protein Multimerization KW - Oryza -- genetics KW - Glucose Transport Proteins, Facilitative -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1733189160?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature&rft.atitle=Structure+of+a+eukaryotic+SWEET+transporter+in+a+homotrimeric+complex.&rft.au=Tao%2C+Yuyong%3BCheung%2C+Lily+S%3BLi%2C+Shuo%3BEom%2C+Joon-Seob%3BChen%2C+Li-Qing%3BXu%2C+Yan%3BPerry%2C+Kay%3BFrommer%2C+Wolf+B%3BFeng%2C+Liang&rft.aulast=Tao&rft.aufirst=Yuyong&rft.date=2015-11-12&rft.volume=527&rft.issue=7577&rft.spage=259&rft.isbn=&rft.btitle=&rft.title=Nature&rft.issn=1476-4687&rft_id=info:doi/10.1038%2Fnature15391 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-12-14 N1 - Date created - 2015-11-12 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 5CTH; PDB; 5CTG N1 - SuppNotes - Cited By: J Biol Chem. 1999 Nov 19;274(47):33244-50 [10559198] FEBS J. 2013 Nov;280(22):5780-800 [23981446] Acta Crystallogr D Biol Crystallogr. 2000 Aug;56(Pt 8):965-72 [10944333] Mol Biol Evol. 2013 Dec;30(12):2725-9 [24132122] Nature. 2014 Apr 24;508(7497):546-9 [24670640] Nat Struct Mol Biol. 2014 May;21(5):472-9 [24747939] Mol Plant Microbe Interact. 2014 Nov;27(11):1186-98 [25083909] Biol Chem. 2014 Dec;395(12):1379-88 [25296672] Nat Struct Mol Biol. 2014 Nov;21(11):1013-5 [25291599] Nature. 2014 Nov 20;515(7527):448-52 [25186729] Cell Res. 2014 Dec;24(12):1486-9 [25378180] Nat Commun. 2015;6:6112 [25598322] Trends Biochem Sci. 2015 Apr;40(4):183-8 [25757400] Plant Cell. 2015 Mar;27(3):607-19 [25794936] Plant J. 2015 May;82(4):632-43 [25824104] Annu Rev Biochem. 2015;84:865-94 [25747398] FEBS Lett. 1999 Dec 31;464(3):123-8 [10618490] Acta Crystallogr D Biol Crystallogr. 2002 Oct;58(Pt 10 Pt 2):1772-9 [12351820] Comput Appl Biosci. 1992 Jun;8(3):275-82 [1633570] Biochemistry. 1993 Sep 21;32(37):9851-8 [8373783] J Mol Biol. 1993 Dec 20;234(4):946-50 [8263940] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] Acta Crystallogr D Biol Crystallogr. 2007 Jan;63(Pt 1):32-41 [17164524] Nature. 2007 Mar 8;446(7132):195-8 [17293878] Nat Protoc. 2007;2(1):38-41 [17401336] Mol Cell Proteomics. 2007 Oct;6(10):1711-26 [17586839] Plant Cell. 2009 Nov;21(11):3610-22 [19948793] Acta Crystallogr D Biol Crystallogr. 2010 Jan;66(Pt 1):12-21 [20057044] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):133-44 [20124693] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] Nature. 2010 Apr 22;464(7292):1218-22 [20376006] Nature. 2010 Nov 25;468(7323):527-32 [21107422] Biochim Biophys Acta. 2011 Feb;1807(2):167-88 [21029721] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):282-92 [21460446] Nat Protoc. 2011 Nov;6(11):1818-33 [22036884] Science. 2012 Jan 13;335(6065):207-11 [22157085] Nature. 2012 Jan 26;481(7382):469-74 [22230955] Mol Aspects Med. 2013 Apr-Jun;34(2-3):183-96 [23506865] Plant Cell. 2013 Mar;25(3):974-84 [23463773] Plant Reprod. 2013 Jun;26(2):83-91 [23686221] J Biol Chem. 2013 Jul 12;288(28):20734-44 [23720776] Compr Physiol. 2012 Apr;2(2):863-914 [22943001] Proc Natl Acad Sci U S A. 2013 Sep 24;110(39):E3685-94 [24027245] Curr Opin Plant Biol. 2015 Jun;25:53-62 [25988582] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/nature15391 ER - TY - JOUR T1 - Two-Color Single Hybrid Plasmonic Nanoemitters with Real Time Switchable Dominant Emission Wavelength. AN - 1732600699; 26437118 AB - We demonstrate two-color nanoemitters that enable the selection of the dominant emitting wavelength by varying the polarization of excitation light. The nanoemitters were fabricated via surface plasmon-triggered two-photon polymerization. By using two polymerizable solutions with different quantum dots, emitters of different colors can be positioned selectively in different orientations in the close vicinity of the metal nanoparticles. The dominant emission wavelength of the metal/polymer anisotropic hybrid nanoemitter thus can be selected by altering the incident polarization. JF - Nano letters AU - Zhou, Xuan AU - Wenger, Jérémie AU - Viscomi, Francesco N AU - Le Cunff, Loïc AU - Béal, Jérémie AU - Kochtcheev, Serguei AU - Yang, Xuyong AU - Wiederrecht, Gary P AU - Colas des Francs, Gérard AU - Bisht, Anu Singh AU - Jradi, Safi AU - Caputo, Roberto AU - Demir, Hilmi Volkan AU - Schaller, Richard D AU - Plain, Jérôme AU - Vial, Alexandre AU - Sun, Xiao Wei AU - Bachelot, Renaud AD - Laboratoire de Nanotechnologie et d'Instrumentation Optique, ICD, CNRS UMR 6281, Université de Technologie de Troyes , 12 Rue Marie Curie CS42060, 10004 Troyes Cedex, France. ; School of Electrical and Electronic Engineering, Nanyang Technological University , Nanyang Avenue, Singapore 639798. ; Center for Nanoscale Materials, Argonne National Laboratory , 9700 S. Cass Avenue, Lemont, Illinois 60439, United States. ; Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB); UMR 6303 CNRS, Université de Bourgogne , Franche-Comté, 9 avenue Alain Savary BP 47870, F-2178 Dijon Cedex, France. ; Department of Physics & CNR-NANOTEC University of Calabria , I-87036 Rende, Cosenza, Italy. Y1 - 2015/11/11/ PY - 2015 DA - 2015 Nov 11 SP - 7458 EP - 7466 VL - 15 IS - 11 KW - hybrid nanostructures KW - surface plasmons KW - fluorescence spectroscopy KW - nanophotonics KW - photopolymerization KW - nanoemitter UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732600699?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Two-Color+Single+Hybrid+Plasmonic+Nanoemitters+with+Real+Time+Switchable+Dominant+Emission+Wavelength.&rft.au=Zhou%2C+Xuan%3BWenger%2C+J%C3%A9r%C3%A9mie%3BViscomi%2C+Francesco+N%3BLe+Cunff%2C+Lo%C3%AFc%3BB%C3%A9al%2C+J%C3%A9r%C3%A9mie%3BKochtcheev%2C+Serguei%3BYang%2C+Xuyong%3BWiederrecht%2C+Gary+P%3BColas+des+Francs%2C+G%C3%A9rard%3BBisht%2C+Anu+Singh%3BJradi%2C+Safi%3BCaputo%2C+Roberto%3BDemir%2C+Hilmi+Volkan%3BSchaller%2C+Richard+D%3BPlain%2C+J%C3%A9r%C3%B4me%3BVial%2C+Alexandre%3BSun%2C+Xiao+Wei%3BBachelot%2C+Renaud&rft.aulast=Zhou&rft.aufirst=Xuan&rft.date=2015-11-11&rft.volume=15&rft.issue=11&rft.spage=7458&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b02962 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-03-28 N1 - Date created - 2015-11-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b02962 ER - TY - JOUR T1 - Simulating and evaluating best management practices for integrated landscape management scenarios in biofuel feedstock production AN - 1780538404; PQ0002784084 AB - Sound crop and land management strategies can maintain land productivity and improve the environmental sustainability of agricultural crop and feedstock production. This study evaluates a strategy of incorporating landscape design and management concepts into bioenergy feedstock production. It examines the effect of land conversion and agricultural best management practices (BMPs) on water quality (nutrients and suspended sediments) and hydrology. The strategy was applied to the watershed of the South Fork Iowa River in Iowa, where the focus was on converting low-productivity land to provide cellulosic biomass and implementing riparian buffers. The Soil and Water Assessment Tool (SWAT) was employed to simulate the impact at watershed and sub-basin scales. The study compared the representation of buffers by using trapping efficiency and area ratio methods in SWAT. Landscape design and management scenarios were developed to quantify water quality under (i) current land use, (ii) partial land conversion to switchgrass, and (iii) riparian buffer implementation. Results show that implementation of vegetative barriers and riparian buffer can trap the loss of total nitrogen, total phosphorus, and sediment significantly. The effect increases with the increase of buffer area coverage. Implementing riparian buffer at 30 m width is able to produce 4 million liters of biofuels. When low-productivity land (15.2% of total watershed land area) is converted to grow switchgrass, suspended sediment, total nitrogen, total phosphorus, and nitrate loadings are reduced by 69.3%, 55.5%, 46.1%, and 13.4%, respectively. Results highlight the significant role of lower-productivity land and buffers in cellulosic biomass and provide insights into the design of an integrated landscape with a conservation buffer for future bioenergy feedstock production. Published 2015. This article is a U.S. Government work and is in the public domain in the USA. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd. JF - Biofuels, Bioproducts and Biorefining AU - Ha, Miae AU - Wu, May AD - Argonne National Laboratory, Lemont, IL, 60439, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 709 EP - 721 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 9 IS - 6 SN - 1932-104X, 1932-104X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE) KW - Land KW - Fuels KW - Buffers KW - Best Management Practice KW - Strategy KW - Watersheds KW - Feedstock KW - Biomass UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1780538404?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biofuels%2C+Bioproducts+and+Biorefining&rft.atitle=Simulating+and+evaluating+best+management+practices+for+integrated+landscape+management+scenarios+in+biofuel+feedstock+production&rft.au=Ha%2C+Miae%3BWu%2C+May&rft.aulast=Ha&rft.aufirst=Miae&rft.date=2015-11-01&rft.volume=9&rft.issue=6&rft.spage=709&rft.isbn=&rft.btitle=&rft.title=Biofuels%2C+Bioproducts+and+Biorefining&rft.issn=1932104X&rft_id=info:doi/10.1002%2Fbbb.1579 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-07-01 N1 - Last updated - 2016-06-30 DO - http://dx.doi.org/10.1002/bbb.1579 ER - TY - JOUR T1 - Recent Advances in Targeted, Self-Assembling Nanoparticles to Address Vascular Damage Due to Atherosclerosis AN - 1776669675; PQ0002754060 AB - Self-assembling nanoparticles functionalized with targeting moieties have significant potential for atherosclerosis nanomedicine. While self-assembly allows the easy construction (and degradation) of nanoparticles with therapeutic or diagnostic functionality, or both, the targeting agent can direct them to a specific molecular marker within a given stage of the disease. Therefore, supramolecular nanoparticles have been investigated in the last decade as molecular imaging agents or explored as nanocarriers that can decrease the systemic toxicity of drugs by producing accumulation predominantly in specific tissues of interest. In this Progress Report, the pathogenesis of atherosclerosis and the damage caused to vascular tissue are described, as well as the current diagnostic and treatment options. An overview of targeted strategies using self-assembling nanoparticles is provided, including liposomes, high density lipoproteins, protein cages, micelles, proticles, and perfluorocarbon nanoparticles. Finally, an overview is given of current challenges, limitations, and future applications for personalized medicine in the context of atherosclerosis of self-assembling nanoparticles. Self-assembling nanoparticles functionalized with targeting moieties have significant potential for atherosclerosis nanomedicine. In this Progress Report, the pathogenesis of atherosclerosis is described, as well as current diagnostic and treatment options. An overview of targeted strategies using self-assembling nanoparticles is provided, and liposomes, high density lipoproteins, protein cages, micelles, proticles, and perfluorocarbon nanoparticles are included. Their challenges and future applications for personalized medicine are discussed. JF - Advanced Healthcare Materials AU - Chung, Eun Ji AU - Tirrell, Matthew AD - Institute for Molecular Engineering, University of Chicago, 5747 S. Ellis Ave, Chicago, IL, 60637, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 2408 EP - 2422 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 4 IS - 16 SN - 2192-2640, 2192-2640 KW - Biotechnology and Bioengineering Abstracts KW - Micelles KW - Reviews KW - Self-assembly KW - Lipoproteins (high density) KW - Computed tomography KW - Arteriosclerosis KW - Toxicity KW - nanoparticles KW - Liposomes KW - Drugs KW - nanotechnology KW - W 30910:Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776669675?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advanced+Healthcare+Materials&rft.atitle=Recent+Advances+in+Targeted%2C+Self-Assembling+Nanoparticles+to+Address+Vascular+Damage+Due+to+Atherosclerosis&rft.au=Chung%2C+Eun+Ji%3BTirrell%2C+Matthew&rft.aulast=Chung&rft.aufirst=Eun&rft.date=2015-11-01&rft.volume=4&rft.issue=16&rft.spage=2408&rft.isbn=&rft.btitle=&rft.title=Advanced+Healthcare+Materials&rft.issn=21922640&rft_id=info:doi/10.1002%2Fadhm.201500126 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-04-13 N1 - SubjectsTermNotLitGenreText - Micelles; Self-assembly; Reviews; Computed tomography; Lipoproteins (high density); Toxicity; Arteriosclerosis; Drugs; Liposomes; nanoparticles; nanotechnology DO - http://dx.doi.org/10.1002/adhm.201500126 ER - TY - JOUR T1 - Vascular Tissues: Recent Advances in Targeted, Self-Assembling Nanoparticles to Address Vascular Damage Due to Atherosclerosis (Adv. Healthcare Mater. 16/2015) AN - 1776669188; PQ0002754050 AB - On page 2408, E. J. Chung and M. Tirrell provide targeted strategies using self-assembling nano-particles for atherosclerosis nanomedicine. The cover image shows recent examples of nano-particles (tobacco mosaic virus in purple, peptide amphiphile micelles in green) within a blood vessel that target early to late stages of atherosclerosis and aim to mitigate the lethality of the disease. JF - Advanced Healthcare Materials AU - Chung, Eun Ji AU - Tirrell, Matthew AD - Institute for Molecular Engineering, University of Chicago, 5747 S. Ellis Ave, Chicago, IL, 60637, USA. Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 2317 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 4 IS - 16 SN - 2192-2640, 2192-2640 KW - Biotechnology and Bioengineering Abstracts KW - Lethality KW - Blood vessels KW - Micelles KW - Arteriosclerosis KW - nanoparticles KW - Tobacco mosaic virus KW - nanotechnology KW - W 30910:Imaging UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776669188?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advanced+Healthcare+Materials&rft.atitle=Vascular+Tissues%3A+Recent+Advances+in+Targeted%2C+Self-Assembling+Nanoparticles+to+Address+Vascular+Damage+Due+to+Atherosclerosis+%28Adv.+Healthcare+Mater.+16%2F2015%29&rft.au=Chung%2C+Eun+Ji%3BTirrell%2C+Matthew&rft.aulast=Chung&rft.aufirst=Eun&rft.date=2015-11-01&rft.volume=4&rft.issue=16&rft.spage=2317&rft.isbn=&rft.btitle=&rft.title=Advanced+Healthcare+Materials&rft.issn=21922640&rft_id=info:doi/10.1002%2Fadhm.201570091 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-06-22 N1 - SubjectsTermNotLitGenreText - Lethality; Blood vessels; Micelles; Arteriosclerosis; nanoparticles; nanotechnology; Tobacco mosaic virus DO - http://dx.doi.org/10.1002/adhm.201570091 ER - TY - JOUR T1 - The growth of instabilities in annular liquid sheets AN - 1727683323; PQ0002117604 AB - An annular liquid sheet surrounded by parallel co-flowing gas is an effective atomiser. However, the initial instabilities which determine the primary break-up of the liquid sheet are not well understood. Lack of agreement on the influence of the boundary conditions and the non-dimension scaling of the initial instability persists between theoretical stability analyses and experiments, since there is little experimental data available on the near-field behaviour of the instability. To address this matter, we have undertaken an experimental parametric study of an aerodynamically-driven, non-swirling annular water sheet. The effects of sheet thickness, inner and outer gas-liquid momentum ratio were investigated over an order of magnitude variation in Reynolds and Weber number. From high-speed image correlation measurements in the near-nozzle region, we propose new empirical correlations for the frequency of the instability as a function of the total gas-liquid momentum ratio, with good non-dimensional collapse. From analysis of the instability velocity probability densities, we find two persistent and distinct superimposed instabilities with different growth rates. The first is a short-lived, rapidly saturating saw-tooth-like instability. The second is a slower-growing stochastic instability which persists through the break-up of the sheet. The presence of multiple instabilities whose growth rates do not strongly correlate with the shear velocities may explain some of the discrepancies between experiments and stability analyses. JF - Experimental Thermal and Fluid Science AU - Duke, Daniel J AU - Honnery, Damon AU - Soria, Julio AD - Energy Systems Division, Argonne National Laboratory, IL, United States, dduke@anl.gov Y1 - 2015/11// PY - 2015 DA - November 2015 SP - 89 EP - 99 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 68 SN - 0894-1777, 0894-1777 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Annular liquid sheet instability KW - experimental KW - Growth rate KW - Experimental Data KW - Boundary Conditions KW - Density KW - Velocity KW - Collapse KW - Growth Rates KW - Growth KW - Stability Analysis KW - Scaling KW - AQ 00001:Water Resources and Supplies KW - SW 5010:Network design KW - Q2 09405:Oil and gas UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1727683323?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Experimental+Thermal+and+Fluid+Science&rft.atitle=The+growth+of+instabilities+in+annular+liquid+sheets&rft.au=Duke%2C+Daniel+J%3BHonnery%2C+Damon%3BSoria%2C+Julio&rft.aulast=Duke&rft.aufirst=Daniel&rft.date=2015-11-01&rft.volume=68&rft.issue=&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=Experimental+Thermal+and+Fluid+Science&rft.issn=08941777&rft_id=info:doi/10.1016%2Fj.expthermflusci.2015.04.013 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-10-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Growth rate; Experimental Data; Growth; Boundary Conditions; Density; Collapse; Velocity; Growth Rates; Stability Analysis; Scaling DO - http://dx.doi.org/10.1016/j.expthermflusci.2015.04.013 ER - TY - JOUR T1 - Mechanism of MenE inhibition by acyl-adenylate analogues and discovery of novel antibacterial agents. AN - 1727992294; 26394156 AB - MenE is an o-succinylbenzoyl-CoA (OSB-CoA) synthetase in the bacterial menaquinone biosynthesis pathway and is a promising target for the development of novel antibacterial agents. The enzyme catalyzes CoA ligation via an acyl-adenylate intermediate, and we have previously reported tight-binding inhibitors of MenE based on stable acyl-sulfonyladenosine analogues of this intermediate, including OSB-AMS (1), which has an IC50 value of ≤25 nM for Escherichia coli MenE. Herein, we show that OSB-AMS reduces menaquinone levels in Staphylococcus aureus, consistent with its proposed mechanism of action, despite the observation that the antibacterial activity of OSB-AMS is ∼1000-fold lower than the IC50 for enzyme inhibition. To inform the synthesis of MenE inhibitors with improved antibacterial activity, we have undertaken a structure-activity relationship (SAR) study stimulated by the knowledge that OSB-AMS can adopt two isomeric forms in which the OSB side chain exists either as an open-chain keto acid or a cyclic lactol. These studies revealed that negatively charged analogues of the keto acid form bind, while neutral analogues do not, consistent with the hypothesis that the negatively charged keto acid form of OSB-AMS is the active isomer. X-ray crystallography and site-directed mutagenesis confirm the importance of a conserved arginine for binding the OSB carboxylate. Although most lactol isomers tested were inactive, a novel difluoroindanediol inhibitor (11) with improved antibacterial activity was discovered, providing a pathway toward the development of optimized MenE inhibitors in the future. JF - Biochemistry AU - Matarlo, Joe S AU - Evans, Christopher E AU - Sharma, Indrajeet AU - Lavaud, Lubens J AU - Ngo, Stephen C AU - Shek, Roger AU - Rajashankar, Kanagalaghatta R AU - French, Jarrod B AU - Tan, Derek S AU - Tonge, Peter J AD - Institute of Chemical Biology and Drug Discovery, Stony Brook, New York 11794-3400, United States ; Pharmacology Program of the Weill Cornell Graduate School of Medical Sciences,, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States ; Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States ; Department of Biochemistry and Cell Biology, Stony Brook University, Stony Brook, New York 11794-3400, United States ; NE-CAT and Department of Chemistry and Chemical Biology, Argonne National Laboratory , Building 436E, Argonne, Illinois 60439, United States. Y1 - 2015/10/27/ PY - 2015 DA - 2015 Oct 27 SP - 6514 EP - 6524 VL - 54 IS - 42 KW - Anti-Bacterial Agents KW - 0 KW - Escherichia coli Proteins KW - Phenylbutyrates KW - Vitamin K 2 KW - 11032-49-8 KW - o-succinylbenzoic acid KW - 27415-09-4 KW - Arginine KW - 94ZLA3W45F KW - Succinate-CoA Ligases KW - EC 6.2.1.- KW - O-succinylbenzoate - CoA ligase KW - EC 6.2.1.26 KW - Index Medicus KW - Drug Discovery KW - Animals KW - Arginine -- chemistry KW - Models, Molecular KW - Phenylbutyrates -- pharmacology KW - Amino Acid Sequence KW - Vitamin K 2 -- metabolism KW - Staphylococcus aureus -- drug effects KW - Phenylbutyrates -- toxicity KW - Staphylococcus aureus -- metabolism KW - Structure-Activity Relationship KW - Mutagenesis, Site-Directed KW - Escherichia coli K12 -- genetics KW - Conserved Sequence KW - Cercopithecus aethiops KW - Molecular Sequence Data KW - Catalytic Domain -- genetics KW - Vero Cells KW - Crystallography, X-Ray KW - Phenylbutyrates -- chemistry KW - Sequence Homology, Amino Acid KW - Microbial Sensitivity Tests KW - Protein Conformation KW - Escherichia coli K12 -- enzymology KW - Escherichia coli Proteins -- chemistry KW - Succinate-CoA Ligases -- chemistry KW - Escherichia coli Proteins -- antagonists & inhibitors KW - Succinate-CoA Ligases -- antagonists & inhibitors KW - Anti-Bacterial Agents -- chemistry KW - Succinate-CoA Ligases -- genetics KW - Anti-Bacterial Agents -- pharmacology KW - Anti-Bacterial Agents -- toxicity KW - Escherichia coli Proteins -- genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1727992294?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biochemistry&rft.atitle=Mechanism+of+MenE+inhibition+by+acyl-adenylate+analogues+and+discovery+of+novel+antibacterial+agents.&rft.au=Matarlo%2C+Joe+S%3BEvans%2C+Christopher+E%3BSharma%2C+Indrajeet%3BLavaud%2C+Lubens+J%3BNgo%2C+Stephen+C%3BShek%2C+Roger%3BRajashankar%2C+Kanagalaghatta+R%3BFrench%2C+Jarrod+B%3BTan%2C+Derek+S%3BTonge%2C+Peter+J&rft.aulast=Matarlo&rft.aufirst=Joe&rft.date=2015-10-27&rft.volume=54&rft.issue=42&rft.spage=6514&rft.isbn=&rft.btitle=&rft.title=Biochemistry&rft.issn=1520-4995&rft_id=info:doi/10.1021%2Facs.biochem.5b00966 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-04-12 N1 - Date created - 2015-10-27 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Nucleic Acids Res. 2014 Jul;42(Web Server issue):W3-6 [24813445] Nat Med. 2014 Sep;20(9):976-8 [25198041] Science. 2008 Sep 19;321(5896):1670-3 [18801996] Nature. 2012 Feb 2;482(7383):23-5 [22297951] J Med Chem. 2012 Apr 26;55(8):3739-55 [22449052] Biochemistry. 2012 Aug 21;51(33):6493-5 [22852753] PLoS Pathog. 2012 Sep;8(9):e1002946 [23028335] Mol Microbiol. 2012 Dec;86(6):1376-92 [23043465] Microbiology. 2013 Jun;159(Pt 6):1190-7 [23579688] JAMA Intern Med. 2013 Dec 9-23;173(22):2039-46 [23999949] Nat Med. 2014 Feb;20(2):121-3 [24504402] J Lipid Res. 2014 Mar;55(3):345-62 [24489112] Appl Biochem Biotechnol. 2014 Feb;172(3):1407-32 [24203275] Acta Crystallogr D Biol Crystallogr. 2000 Dec;56(Pt 12):1622-4 [11092928] Vitam Horm. 2001;61:173-218 [11153266] Nat Struct Biol. 2002 Jan;9(1):53-6 [11731805] Proc Natl Acad Sci U S A. 2002 Jan 22;99(2):966-71 [11805338] Biochim Biophys Acta. 2003 Mar 6;1557(1-3):67-76 [12615349] Mol Microbiol. 2003 Apr;48(1):77-84 [12657046] Proc Natl Acad Sci U S A. 2003 Apr 15;100(8):4678-83 [12682299] J Biol Chem. 2003 Oct 24;278(43):42352-60 [12909628] Acta Crystallogr D Biol Crystallogr. 2004 Aug;60(Pt 8):1355-63 [15272157] Arch Biochem Biophys. 1966 Apr;114(1):154-7 [4289032] Biochim Biophys Acta. 1971 Jul 20;244(1):155-66 [4330424] Biochim Biophys Acta. 1977 Jul 7;461(1):84-100 [195602] Biochem Soc Trans. 1977;5(6):1714-6 [598576] J Gen Microbiol. 1979 Jan;110(1):127-36 [107269] J Bacteriol. 1979 Oct;140(1):92-8 [500558] Dtsch Tierarztl Wochenschr. 1980 Nov 5;87(11):410-2 [7006955] J Bacteriol. 1981 Jan;145(1):321-7 [6780514] J Biol Chem. 1982 Jul 10;257(13):7396-400 [7045104] Microbiol Rev. 1982 Sep;46(3):241-80 [6127606] J Gen Microbiol. 1984 Sep;130(9):2427-37 [6502136] Nucleic Acids Res. 1988 Nov 25;16(22):10881-90 [2849754] Science. 1995 Sep 22;269(5231):1684-91 [7569894] Clin Microbiol Rev. 2011 Jan;24(1):71-109 [21233508] J Am Chem Soc. 2011 Jul 27;133(29):11088-91 [21707059] Biochemistry. 2011 Oct 11;50(40):8712-21 [21928762] Chembiochem. 2012 Jan 2;13(1):129-36 [22109989] Nucleic Acids Res. 2012 Jan;40(Database issue):D901-6 [22075992] J Med Chem. 2014 Apr 10;57(7):3126-39 [24568559] Gene. 1996 Feb 2;168(1):43-8 [8626063] MLO Med Lab Obs. 1996 Jun;28(6):40-2, 44, 46 passim [10172683] Can J Biochem Physiol. 1959 Aug;37(8):911-7 [13671378] Am J Clin Nutr. 1961 Jul-Aug;9(4)Pt 2:97-103 [13767551] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] Nat Med. 2007 Mar;13(3):309-12 [17342146] J Am Chem Soc. 2007 Jun 27;129(25):7752-3 [17542590] Plant J. 2008 Apr;54(2):272-83 [18208520] Arch Intern Med. 2008 Jul 28;168(14):1585-91 [18663172] Biochemistry. 2008 Aug 5;47(31):8016-25 [18620418] Biochemistry. 2008 Aug 5;47(31):8026-39 [18620421] Bioorg Med Chem Lett. 2008 Nov 15;18(22):5963-6 [18762421] J Am Chem Soc. 2008 Dec 24;130(51):17254-5 [19032027] Biochemistry. 2008 Nov 25;47(47):12434-47 [18973344] Med Chem. 2009 Mar;5(2):197-207 [19275719] Mol Microbiol. 2009 Apr;72(1):85-97 [19220750] Biochemistry. 2009 May 19;48(19):4115-25 [19320426] Science. 2009 Aug 28;325(5944):1089-93 [19713519] ACS Chem Biol. 2009 Oct 16;4(10):811-27 [19610673] Microbiology. 2010 Jan;156(Pt 1):81-7 [19797356] Biochemistry. 2010 Mar 30;49(12):2672-9 [20199062] Molecules. 2010 Mar;15(3):1531-53 [20335999] Nat Rev Microbiol. 2010 Jul;8(7):501-10 [20551974] Bioorg Med Chem Lett. 2010 Nov 1;20(21):6306-9 [20850304] Plant J. 2010 Oct;64(1):38-46 [20626653] Nature. 2010 Nov 4;468(7320):117-21 [20953171] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.biochem.5b00966 ER - TY - JOUR T1 - Spin-glass-like freezing of inner and outer surface layers in hollow γ-Fe2O3 nanoparticles. AN - 1727985536; 26503506 AB - Disorder among surface spins is a dominant factor in the magnetic response of magnetic nanoparticle systems. In this work, we examine time-dependent magnetization in high-quality, monodisperse hollow maghemite nanoparticles (NPs) with a 14.8 ± 0.5 nm outer diameter and enhanced surface-to-volume ratio. The nanoparticle ensemble exhibits spin-glass-like signatures in dc magnetic aging and memory protocols and ac magnetic susceptibility. The dynamics of the system slow near 50 K, and become frozen on experimental time scales below 20 K. Remanence curves indicate the development of magnetic irreversibility concurrent with the freezing of the spin dynamics. A strong exchange-bias effect and its training behavior point to highly frustrated surface spins that rearrange much more slowly than interior spins. Monte Carlo simulations of a hollow particle corroborate strongly disordered surface layers with complex energy landscapes that underlie both glass-like dynamics and magnetic irreversibility. Calculated hysteresis loops reveal that magnetic behavior is not identical at the inner and outer surfaces, with spins at the outer surface layer of the 15 nm hollow particles exhibiting a higher degree of frustration. Our combined experimental and simulated results shed light on the origin of spin-glass-like phenomena and the important role played by the surface spins in magnetic hollow nanostructures. JF - Scientific reports AU - Khurshid, Hafsa AU - Lampen-Kelley, Paula AU - Iglesias, Òscar AU - Alonso, Javier AU - Phan, Manh-Huong AU - Sun, Cheng-Jun AU - Saboungi, Marie-Louise AU - Srikanth, Hariharan AD - Department of Physics, University of South Florida, Tampa, FL 33620. ; Departament de Física Fonamental and Institut de Nanociència i Nanotecnologia (N2UB) Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain. ; Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439. ; BCMaterials Edificio No. 500, Parque Tecnológico de Vizcaya, Derio, Spain 48160. Y1 - 2015/10/27/ PY - 2015 DA - 2015 Oct 27 SP - 15054 VL - 5 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1727985536?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+reports&rft.atitle=Spin-glass-like+freezing+of+inner+and+outer+surface+layers+in+hollow+%CE%B3-Fe2O3+nanoparticles.&rft.au=Khurshid%2C+Hafsa%3BLampen-Kelley%2C+Paula%3BIglesias%2C+%C3%92scar%3BAlonso%2C+Javier%3BPhan%2C+Manh-Huong%3BSun%2C+Cheng-Jun%3BSaboungi%2C+Marie-Louise%3BSrikanth%2C+Hariharan&rft.aulast=Khurshid&rft.aufirst=Hafsa&rft.date=2015-10-27&rft.volume=5&rft.issue=&rft.spage=15054&rft.isbn=&rft.btitle=&rft.title=Scientific+reports&rft.issn=2045-2322&rft_id=info:doi/10.1038%2Fsrep15054 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-02-19 N1 - Date created - 2015-10-27 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Phys Rev Lett. 2010 May 21;104(20):207203 [20867056] J Synchrotron Radiat. 2005 Jul;12(Pt 4):537-41 [15968136] Sensors (Basel). 2012;12(3):2610-31 [22736968] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/srep15054 ER - TY - JOUR T1 - Alpha-Synuclein Regulates Neuronal Levels of Manganese and Calcium. AN - 1725522961; 26284970 AB - Manganese (Mn) may foster aggregation of alpha-synuclein (αSyn) contributing to the pathogenesis of PD. Here, we examined the influence of αSyn overexpression on distribution and oxidation states of Mn in frozen-hydrated primary midbrain neurons (PMNs) by synchrotron-based X-ray fluorescence (XRF) and X-ray absorption near edge structure spectroscopy (XANES). Overexpression of αSyn increased intracellular Mn levels, whereas levels of Ca, Zn, K, P, and S were significantly decreased. Mn oxidation states were not altered. A strong correlation between Cu-/Mn-levels as well as Fe-/Mn-levels was observed in αSyn-overexpressing cells. Subcellular resolution revealed a punctate or filament-like perinuclear and neuritic distribution of Mn, which resembled the expression of DMT1 and MnSOD. While overexpression of αSyn did not significantly alter the expression patterns of the most-expressed Mn transport proteins (DMT1, VGCC, Fpn1), it attenuated the Mn release from Mn-treated neurons. Thus, these data suggest that αSyn may act as an intracellular Mn store. In total, neurotoxicity in PD could be mediated via regulation of transition metal levels and the metal-binding capacity of αSyn, which could represent a promising therapeutic target for this neurodegenerative disorder. JF - ACS chemical neuroscience AU - Dučić, Tanja AU - Carboni, Eleonora AU - Lai, Barry AU - Chen, Si AU - Michalke, Bernhard AU - Lázaro, Diana F AU - Outeiro, Tiago F AU - Bähr, Mathias AU - Barski, Elisabeth AU - Lingor, Paul AD - CELLS - ALBA, Carretera BP 1413, de Cerdanyola del Vallès a Sant Cugat del Vallè, km. 33, 08290 Cerdanyola del Vallès, Barcelona, Spain. ; Department of Neurology, University Medicine Göttingen , Robert-Koch-Str. 40, 37075 Göttingen, Germany. ; Advanced Photon Source, Argonne National Laboratory , 9700 S. Cass Avenue, Argonne, Illinois 60439, United States . ; Helmholtz Zentrum München , Ingolstädter Landstr. 1, 85764 Neuherberg, Germany. ; Department of Neurodegeneration and Restorative Research, University Medicine Göttingen , Waldweg 33, 37073 Göttingen, Germany. Y1 - 2015/10/21/ PY - 2015 DA - 2015 Oct 21 SP - 1769 EP - 1779 VL - 6 IS - 10 KW - Carrier Proteins KW - 0 KW - Cation Transport Proteins KW - alpha-Synuclein KW - Green Fluorescent Proteins KW - 147336-22-9 KW - Manganese KW - 42Z2K6ZL8P KW - Calcium KW - SY7Q814VUP KW - Index Medicus KW - calcium KW - XANES spectroscopy KW - X-ray fluorescence KW - manganese KW - alpha-synuclein KW - Microscopy, Confocal KW - Animals KW - Analysis of Variance KW - Carrier Proteins -- metabolism KW - Mesencephalon -- cytology KW - X-Ray Microtomography KW - Green Fluorescent Proteins -- genetics KW - Rats KW - X-Ray Absorption Spectroscopy KW - Transfection KW - Cells, Cultured KW - Rats, Wistar KW - Cation Transport Proteins -- metabolism KW - Statistics as Topic KW - Embryo, Mammalian KW - Green Fluorescent Proteins -- metabolism KW - Calcium -- metabolism KW - Manganese -- pharmacology KW - Manganese -- metabolism KW - Neurons -- metabolism KW - alpha-Synuclein -- metabolism KW - Neurons -- drug effects KW - Calcium -- pharmacology KW - alpha-Synuclein -- genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1725522961?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+chemical+neuroscience&rft.atitle=Alpha-Synuclein+Regulates+Neuronal+Levels+of+Manganese+and+Calcium.&rft.au=Du%C4%8Di%C4%87%2C+Tanja%3BCarboni%2C+Eleonora%3BLai%2C+Barry%3BChen%2C+Si%3BMichalke%2C+Bernhard%3BL%C3%A1zaro%2C+Diana+F%3BOuteiro%2C+Tiago+F%3BB%C3%A4hr%2C+Mathias%3BBarski%2C+Elisabeth%3BLingor%2C+Paul&rft.aulast=Du%C4%8Di%C4%87&rft.aufirst=Tanja&rft.date=2015-10-21&rft.volume=6&rft.issue=10&rft.spage=1769&rft.isbn=&rft.btitle=&rft.title=ACS+chemical+neuroscience&rft.issn=1948-7193&rft_id=info:doi/10.1021%2Facschemneuro.5b00093 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-08-01 N1 - Date created - 2015-10-21 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acschemneuro.5b00093 ER - TY - JOUR T1 - Geochemical characteristics and microbial community composition in toxic metal-rich sediments contaminated with Au-Ag mine tailings. AN - 1686994292; 25917692 AB - The effects of extreme geochemical conditions on microbial community composition were investigated for two distinct sets of sediment samples collected near weathered mine tailings. One set (SCH) showed extraordinary geochemical characteristics: As (6.7-11.5%), Pb (1.5-2.1%), Zn (0.1-0.2%), and pH (3.1-3.5). The other set (SCL) had As (0.3-1.2%), Pb (0.02-0.22%), and Zn (0.01-0.02%) at pH 2.5-3.1. The bacterial communities in SCL were clearly different from those in SCH, suggesting that extreme geochemical conditions affected microbial community distribution even on a small spatial scale. The clones identified in SCL were closely related to acidophilic bacteria in the taxa Acidobacterium (18%), Acidomicrobineae (14%), and Leptospirillum (10%). Most clones in SCH were closely related to Methylobacterium (79%) and Ralstonia (19%), both well-known metal-resistant bacteria. Although total As was extremely high, over 95% was in the form of scorodite (FeAsO4·2H2O). Acid-extractable As was only ∼118 and ∼14 mg kg(-1) in SCH and SCL, respectively, below the level known to be toxic to bacteria. Meanwhile, acid-extractable Pb and Zn in SCH were above toxic concentrations. Because As was present in an oxidized, stable form, release of Pb and/or Zn (or a combination of toxic metals in the sediment) from the sediment likely accounts for the differences in microbial community structure. The results also suggest that care should be taken when investigating mine tailings, because large differences in chemical/biological properties can occur over small spatial scales. JF - Journal of hazardous materials AU - Kwon, Man Jae AU - Yang, Jung-Seok AU - Lee, Seunghak AU - Lee, Giehyeon AU - Ham, Baknoon AU - Boyanov, Maxim I AU - Kemner, Kenneth M AU - O'Loughlin, Edward J AD - Korea Institute of Science and Technology, Gangneung, South Korea. Electronic address: mkwon@kist.re.kr. ; Korea Institute of Science and Technology, Gangneung, South Korea. Electronic address: yjseok@gmail.com. ; Korea Institute of Science and Technology, Seoul, South Korea. ; Yonsei University, Seoul, South Korea. ; Korea Institute of Science and Technology, Gangneung, South Korea. ; Biosciences Division, Argonne National Laboratory, Argonne, IL, USA; Bulgarian Academy of Sciences, Institute of Chemical Engineering, Sofia, Bulgaria. ; Biosciences Division, Argonne National Laboratory, Argonne, IL, USA. Y1 - 2015/10/15/ PY - 2015 DA - 2015 Oct 15 SP - 147 EP - 157 VL - 296 KW - Soil Pollutants KW - 0 KW - Silver KW - 3M4G523W1G KW - Gold KW - 7440-57-5 KW - Index Medicus KW - Microbial community KW - Scorodite KW - Mine tailings KW - Toxic metals KW - Soil Microbiology KW - Republic of Korea KW - Geologic Sediments -- chemistry KW - Soil Pollutants -- toxicity KW - Gold -- analysis KW - Gold -- toxicity KW - Silver -- analysis KW - Geologic Sediments -- microbiology KW - Silver -- toxicity KW - Mining KW - Environmental Monitoring -- methods KW - Soil Pollutants -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686994292?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+hazardous+materials&rft.atitle=Geochemical+characteristics+and+microbial+community+composition+in+toxic+metal-rich+sediments+contaminated+with+Au-Ag+mine+tailings.&rft.au=Kwon%2C+Man+Jae%3BYang%2C+Jung-Seok%3BLee%2C+Seunghak%3BLee%2C+Giehyeon%3BHam%2C+Baknoon%3BBoyanov%2C+Maxim+I%3BKemner%2C+Kenneth+M%3BO%27Loughlin%2C+Edward+J&rft.aulast=Kwon&rft.aufirst=Man&rft.date=2015-10-15&rft.volume=296&rft.issue=&rft.spage=147&rft.isbn=&rft.btitle=&rft.title=Journal+of+hazardous+materials&rft.issn=1873-3336&rft_id=info:doi/10.1016%2Fj.jhazmat.2015.04.035 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-17 N1 - Date created - 2015-06-08 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.jhazmat.2015.04.035 ER - TY - JOUR T1 - Fast, Ratiometric FRET from Quantum Dot Conjugated Stabilized Single Chain Variable Fragments for Quantitative Botulinum Neurotoxin Sensing. AN - 1722419029; 26397120 AB - Botulinum neurotoxin (BoNT) presents a significant hazard under numerous realistic scenarios. The standard detection scheme for this fast-acting toxin is a lab-based mouse lethality assay that is sensitive and specific, but slow (∼2 days) and requires expert administration. As such, numerous efforts have aimed to decrease analysis time and reduce complexity. Here, we describe a sensitive ratiometric fluorescence resonance energy transfer scheme that utilizes highly photostable semiconductor quantum dot (QD) energy donors and chromophore conjugation to compact, single chain variable antibody fragments (scFvs) to yield a fast, fieldable sensor for BoNT with a 20-40 pM detection limit, toxin quantification, adjustable dynamic range, sensitivity in the presence of interferents, and sensing times as fast as 5 min. Through a combination of mutations, we achieve stabilized scFv denaturation temperatures of more than 60 °C, which bolsters fieldability. We also describe adaptation of the assay into a microarray format that offers persistent monitoring, reuse, and multiplexing. JF - Nano letters AU - Lee, Joonseok AU - Brennan, Melissa B AU - Wilton, Rosemarie AU - Rowland, Clare E AU - Rozhkova, Elena A AU - Forrester, Sara AU - Hannah, Daniel C AU - Carlson, Julia AU - Shevchenko, Elena V AU - Schabacker, Daniel S AU - Schaller, Richard D AD - Center for Nanoscale Materials, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; Biosciences, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; Global Security Sciences, Argonne National Laboratory , Argonne, Illinois 60439, United States. ; Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States. ; College of Agricultural & Life Sciences, University of Wisconsin , Madison, Wisconsin 53706, United States. Y1 - 2015/10/14/ PY - 2015 DA - 2015 Oct 14 SP - 7161 EP - 7167 VL - 15 IS - 10 KW - Single-Chain Antibodies KW - 0 KW - Botulinum Toxins KW - EC 3.4.24.69 KW - Index Medicus KW - botulinum neurotoxin KW - FRET KW - protein sensor KW - quantum dot KW - microarray KW - scFv KW - Fluorescence Resonance Energy Transfer KW - Limit of Detection KW - Single-Chain Antibodies -- chemistry KW - Quantum Dots KW - Botulinum Toxins -- analysis KW - Radiometry -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722419029?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Fast%2C+Ratiometric+FRET+from+Quantum+Dot+Conjugated+Stabilized+Single+Chain+Variable+Fragments+for+Quantitative+Botulinum+Neurotoxin+Sensing.&rft.au=Lee%2C+Joonseok%3BBrennan%2C+Melissa+B%3BWilton%2C+Rosemarie%3BRowland%2C+Clare+E%3BRozhkova%2C+Elena+A%3BForrester%2C+Sara%3BHannah%2C+Daniel+C%3BCarlson%2C+Julia%3BShevchenko%2C+Elena+V%3BSchabacker%2C+Daniel+S%3BSchaller%2C+Richard+D&rft.aulast=Lee&rft.aufirst=Joonseok&rft.date=2015-10-14&rft.volume=15&rft.issue=10&rft.spage=7161&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b03442 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-09-02 N1 - Date created - 2015-10-14 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b03442 ER - TY - JOUR T1 - Towards Transparent Throughput Elasticity for IaaS Cloud Storage: Exploring the Benefits of Adaptive Block-Level Caching AN - 1708801887 AB - Storage elasticity on IaaS clouds is a crucial feature in the age of data-intensive computing, especially when considering fluctuations of I/O throughput. This paper provides a transparent solution that automatically boosts I/O bandwidth during peaks for underlying virtual disks, effectively avoiding over-provisioning without performance loss. The authorsʼ proposal relies on the idea of leveraging short-lived virtual disks of better performance characteristics (and thus more expensive) to act during peaks as a caching layer for the persistent virtual disks where the application data is stored. Furthermore, they introduce a performance and cost prediction methodology that can be used both independently to estimate in advance what trade-off between performance and cost is possible, as well as an optimization technique that enables better cache size selection to meet the desired performance level with minimal cost. The authors demonstrate the benefits of their proposal both for microbenchmarks and for two real-life applications using large-scale experiments. JF - International Journal of Distributed Systems and Technologies AU - Nicolae, Bogdan AU - Riteau, Pierre AU - Keahey, Kate AD - IBM Research, Dublin, Ireland ; University of Chicago, Chicago, IL, USA ; Argonne National Laboratory, Lemont, IL, USA ; IBM Research, Dublin, Ireland Y1 - 2015/10// PY - 2015 DA - Oct 2015 SP - 21 EP - 44 CY - Hershey PB - IGI Global VL - 6 IS - 4 SN - 1947-3532 KW - Computers--Computer Systems KW - Adaptive I/O KW - Block-Level Caching KW - Cloud Computing KW - Storage Elasticity KW - Virtual Disk KW - Servers KW - Optimization techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1708801887?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Alisa&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Distributed+Systems+and+Technologies&rft.atitle=Towards+Transparent+Throughput+Elasticity+for+IaaS+Cloud+Storage%3A+Exploring+the+Benefits+of+Adaptive+Block-Level+Caching&rft.au=Nicolae%2C+Bogdan%3BRiteau%2C+Pierre%3BKeahey%2C+Kate&rft.aulast=Nicolae&rft.aufirst=Bogdan&rft.date=2015-10-01&rft.volume=6&rft.issue=4&rft.spage=21&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Distributed+Systems+and+Technologies&rft.issn=19473532&rft_id=info:doi/10.4018%2FIJDST.2015100102 LA - English DB - Library & Information Science Abstracts (LISA) N1 - Date revised - 2015-09-01 N1 - Last updated - 2016-05-13 DO - http://dx.doi.org/10.4018/IJDST.2015100102 ER - TY - JOUR T1 - Reconstructing cerebrovascular networks under local physiological constraints by integer programming. AN - 1705000621; 25977158 AB - We introduce a probabilistic approach to vessel network extraction that enforces physiological constraints on the vessel structure. The method accounts for both image evidence and geometric relationships between vessels by solving an integer program, which is shown to yield the maximum a posteriori (MAP) estimate to a probabilistic model. Starting from an overconnected network, it is pruning vessel stumps and spurious connections by evaluating the local geometry and the global connectivity of the graph. We utilize a high-resolution micro computed tomography (μCT) dataset of a cerebrovascular corrosion cast to obtain a reference network and learn the prior distributions of our probabilistic model and we perform experiments on in-vivo magnetic resonance microangiography (μMRA) images of mouse brains. We finally discuss properties of the networks obtained under different tracking and pruning approaches. JF - Medical image analysis AU - Rempfler, Markus AU - Schneider, Matthias AU - Ielacqua, Giovanna D AU - Xiao, Xianghui AU - Stock, Stuart R AU - Klohs, Jan AU - Székely, Gábor AU - Andres, Bjoern AU - Menze, Bjoern H AD - Department of Computer Science, Technische Universität München, Germany; Computer Vision Laboratory, ETH Zürich, Switzerland. Electronic address: markurem@vision.ee.ethz.ch. ; Computer Vision Laboratory, ETH Zürich, Switzerland; Institute of Pharmacology and Toxicology, University of Zürich, Switzerland. ; Institute for Biomedical Engineering, University and ETH Zürich, Switzerland. ; Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA. ; Feinberg School of Medicine, Northwestern University, Chicago, IL, USA. ; Computer Vision Laboratory, ETH Zürich, Switzerland. ; Max Planck Institute for Informatics, Saarbrücken, Germany. ; Department of Computer Science, Technische Universität München, Germany; Institute for Advanced Studies, Technische Universität München, Germany. Y1 - 2015/10// PY - 2015 DA - October 2015 SP - 86 EP - 94 VL - 25 IS - 1 KW - Index Medicus KW - Cerebrovascular networks KW - Vessel tracking KW - Vessel segmentation KW - Vascular network extraction KW - Integer programming KW - Sensitivity and Specificity KW - Animals KW - Reproducibility of Results KW - Humans KW - Mice KW - Image Enhancement -- methods KW - Numerical Analysis, Computer-Assisted KW - Image Interpretation, Computer-Assisted -- methods KW - Cerebral Arteries -- anatomy & histology KW - X-Ray Microtomography -- methods KW - Imaging, Three-Dimensional -- methods KW - Algorithms KW - Magnetic Resonance Angiography -- methods KW - Pattern Recognition, Automated -- methods KW - Cerebral Angiography -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705000621?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Medical+image+analysis&rft.atitle=Reconstructing+cerebrovascular+networks+under+local+physiological+constraints+by+integer+programming.&rft.au=Rempfler%2C+Markus%3BSchneider%2C+Matthias%3BIelacqua%2C+Giovanna+D%3BXiao%2C+Xianghui%3BStock%2C+Stuart+R%3BKlohs%2C+Jan%3BSz%C3%A9kely%2C+G%C3%A1bor%3BAndres%2C+Bjoern%3BMenze%2C+Bjoern+H&rft.aulast=Rempfler&rft.aufirst=Markus&rft.date=2015-10-01&rft.volume=25&rft.issue=1&rft.spage=86&rft.isbn=&rft.btitle=&rft.title=Medical+image+analysis&rft.issn=1361-8423&rft_id=info:doi/10.1016%2Fj.media.2015.03.008 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-13 N1 - Date created - 2015-08-17 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.media.2015.03.008 ER - TY - JOUR T1 - Mechanistic Implications of the Unique Structural Features and Dimerization of the Cytoplasmic Domain of the Pseudomonas Sigma Regulator, PupR. AN - 1718074887; 26313375 AB - Gram-negative bacteria tightly regulate intracellular levels of iron, an essential nutrient. To ensure this strict control, some outer membrane TonB-dependent transporters (TBDTs) that are responsible for iron import stimulate their own transcription in response to extracellular binding by an iron-laden siderophore. This process is mediated by an inner membrane sigma regulator protein (an anti-sigma factor) that transduces an unknown periplasmic signal from the TBDT to release an intracellular sigma factor from the inner membrane, which ultimately upregulates TBDT transcription. Here, we use the Pseudomonas putida ferric-pseudobactin BN7/BN8 sigma regulator, PupR, as a model system to understand the molecular mechanism of this conserved class of sigma regulators. We have determined the X-ray crystal structure of the cytoplasmic anti-sigma domain (ASD) of PupR to 2.0 Å. Size exclusion chromatography, small-angle X-ray scattering, and sedimentation velocity analytical ultracentrifugation all indicate that, in contrast to other ASDs, the PupR-ASD exists as a dimer in solution. Mutagenesis of residues at the dimer interface identified from the crystal structure disrupts dimerization and protein stability, as determined by sedimentation velocity analytical ultracentrifugation and thermal denaturation circular dichroism spectroscopy. These combined results suggest that this type of inner membrane sigma regulator may utilize an unusual mechanism to sequester their cognate sigma factors and prevent transcription activation. JF - Biochemistry AU - Jensen, Jaime L AU - Balbo, Andrea AU - Neau, David B AU - Chakravarthy, Srinivas AU - Zhao, Huaying AU - Sinha, Sangita C AU - Colbert, Christopher L AD - Department of Chemistry and Biochemistry, North Dakota State University , Fargo, North Dakota 58108-6050, United States. ; Biomedical Engineering and Physical Science Shared Resource, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health , Bethesda, Maryland 20892, United States. ; Department of Chemistry and Chemical Biology, Cornell University, Northeastern Collaborative Access Team, Argonne National Laboratory, Argonne, Illinois 60439, United States. ; Biophysics Collaborative Access Team, Advanced Photon Source, 9700 South Cass Avenue, Bldg. 435B, Argonne, Illinois 60439, United States. ; Dynamics of Macromolecular Assembly Section, Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health , Bethesda, Maryland 20892, United States. Y1 - 2015/09/29/ PY - 2015 DA - 2015 Sep 29 SP - 5867 EP - 5877 VL - 54 IS - 38 KW - Bacterial Proteins KW - 0 KW - Membrane Proteins KW - PupR protein, Pseudomonas putida KW - Index Medicus KW - Models, Molecular KW - Protein Stability KW - Crystallography, X-Ray KW - Protein Structure, Tertiary KW - Protein Multimerization KW - Bacterial Proteins -- chemistry KW - Membrane Proteins -- chemistry KW - Pseudomonas putida -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718074887?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biochemistry&rft.atitle=Mechanistic+Implications+of+the+Unique+Structural+Features+and+Dimerization+of+the+Cytoplasmic+Domain+of+the+Pseudomonas+Sigma+Regulator%2C+PupR.&rft.au=Jensen%2C+Jaime+L%3BBalbo%2C+Andrea%3BNeau%2C+David+B%3BChakravarthy%2C+Srinivas%3BZhao%2C+Huaying%3BSinha%2C+Sangita+C%3BColbert%2C+Christopher+L&rft.aulast=Jensen&rft.aufirst=Jaime&rft.date=2015-09-29&rft.volume=54&rft.issue=38&rft.spage=5867&rft.isbn=&rft.btitle=&rft.title=Biochemistry&rft.issn=1520-4995&rft_id=info:doi/10.1021%2Facs.biochem.5b00826 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-01-11 N1 - Date created - 2015-09-29 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Anal Biochem. 2003 Sep 1;320(1):104-24 [12895474] J Bacteriol. 2000 Feb;182(3):637-46 [10633096] J Mol Biol. 2001 Oct 26;313(3):485-99 [11676534] Anal Biochem. 2001 Dec 15;299(2):271-4 [11730356] Mol Cell. 2003 Apr;11(4):1067-78 [12718891] Mol Microbiol. 2003 Jun;48(6):1467-80 [12791131] J Comput Chem. 2004 Oct;25(13):1605-12 [15264254] EMBO J. 2004 Aug 4;23(15):2952-62 [15257291] Mol Microbiol. 2004 Aug;53(4):1267-77 [15306027] Annu Rev Microbiol. 2004;58:611-47 [15487950] Annu Rev Genet. 1985;19:355-87 [3936407] J Bacteriol. 1990 Dec;172(12):6749-58 [2254251] Anal Biochem. 1992 Nov 1;206(2):215-25 [1443589] J Mol Biol. 1993 Jan 5;229(1):105-24 [7678431] Mol Microbiol. 1993 May;8(3):591-601 [8392140] EMBO J. 1994 Jun 15;13(12):2805-13 [8026465] EMBO J. 1995 Apr 3;14(7):1430-8 [7729419] Mol Microbiol. 1995 Jan;15(1):119-32 [7752886] Mol Microbiol. 1995 Oct;18(1):163-74 [8596456] Methods Enzymol. 1997;276:523-30 [9048379] Microbiol Mol Biol Rev. 1997 Sep;61(3):319-36 [9293185] J Biol Chem. 1997 Nov 7;272(45):28391-7 [9353297] Protein Expr Purif. 1999 Feb;15(1):34-9 [10024467] J Struct Biol. 1999 Apr-May;125(2-3):185-95 [10222274] Genes Dev. 1999 Sep 15;13(18):2449-61 [10500101] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] FEMS Microbiol Rev. 2005 Sep;29(4):673-84 [16102597] Biometals. 2005 Oct;18(5):507-17 [16333751] Acta Crystallogr D Biol Crystallogr. 2006 Apr;62(Pt 4):439-50 [16552146] Proc Natl Acad Sci U S A. 2007 Jan 9;104(2):513-8 [17197416] PLoS One. 2014;9(4):e89502 [24727671] J Mol Biol. 2014 Jun 12;426(12):2313-27 [24727125] FEMS Microbiol Rev. 2014 Jul;38(4):569-97 [24923658] Environ Microbiol. 2014 Aug;16(8):2433-43 [24373018] BMC Microbiol. 2014;14:287 [25433393] J Biol Chem. 2015 May 8;290(19):12237-46 [25809487] Biomolecules. 2015;5(3):1245-65 [26131973] Environ Microbiol. 2015 Sep;17(9):3263-77 [25581349] J Mol Biol. 2007 Apr 27;368(2):398-406 [17349657] J Am Chem Soc. 2007 May 2;129(17):5656-64 [17411046] J Mol Biol. 2007 Sep 21;372(3):774-97 [17681537] Mol Cell. 2007 Sep 7;27(5):793-805 [17803943] Acta Crystallogr D Biol Crystallogr. 2008 Jan;64(Pt 1):61-9 [18094468] Curr Protoc Immunol. 2008 May;Chapter 18:Unit 18.15 [18491296] BMC Struct Biol. 2008;8:25 [18477405] Biochim Biophys Acta. 2008 Sep;1778(9):1930-45 [17673165] Proc Natl Acad Sci U S A. 2009 Jan 27;106(4):1045-50 [19144921] Acta Crystallogr D Biol Crystallogr. 2009 Jun;65(Pt 6):582-601 [19465773] Mol Microbiol. 2009 Dec;74(5):1257-71 [19889096] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):125-32 [20124692] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] J Mol Biol. 2010 Apr 16;397(5):1199-208 [20184899] Nucleic Acids Res. 2010 Jul;38(Web Server issue):W540-4 [20507903] Annu Rev Microbiol. 2010;64:43-60 [20420522] J Mol Biol. 2011 Apr 8;407(4):477-91 [21295582] Biophys J. 2011 May 4;100(9):2309-17 [21539801] Mol Microbiol. 2011 Dec;82(6):1444-53 [22040024] Anal Chem. 2012 Nov 6;84(21):9513-9 [23020071] J Gen Physiol. 2013 Jun;141(6):747-9 [23855058] Biophys J. 2013 Aug 20;105(4):962-74 [23972848] Acta Crystallogr D Biol Crystallogr. 2014 Apr;70(Pt 4):1026-36 [24699647] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.biochem.5b00826 ER - TY - CPAPER T1 - Operational Risk: Stepping Beyond Bow-Ties T2 - 2015 Society of Petroleum Engineers Annual Technical Conference and Exhibition (ATCE 2015) AN - 1731761827; 6357785 JF - 2015 Society of Petroleum Engineers Annual Technical Conference and Exhibition (ATCE 2015) AU - Fraser, D Y1 - 2015/09/28/ PY - 2015 DA - 2015 Sep 28 KW - Petroleum KW - Environmental engineering KW - Public health UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731761827?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+Society+of+Petroleum+Engineers+Annual+Technical+Conference+and+Exhibition+%28ATCE+2015%29&rft.atitle=Operational+Risk%3A+Stepping+Beyond+Bow-Ties&rft.au=Fraser%2C+D&rft.aulast=Fraser&rft.aufirst=D&rft.date=2015-09-28&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+Society+of+Petroleum+Engineers+Annual+Technical+Conference+and+Exhibition+%28ATCE+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://www.spe.org/atce/2015/documents/15ATCE-program-compiled.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - JOUR T1 - Effects of the background electrolyte on Th(IV) sorption to muscovite mica AN - 1718054684; 2015-093859 AB - The adsorption of tetravalent thorium on the muscovite mica (0 0 1) basal plane was studied by X-ray crystal truncation rod (CTR) and resonant anomalous X-ray reflectivity (RAXR) measurements and alpha spectrometry in the presence of perchlorate background electrolytes LiClO (sub 4) , NaClO (sub 4) , and KClO (sub 4) ([Th(IV)] = 0.1 mM, I = 0.1 M or 0.01 M, pH = 3.3 + or - 0.3). RAXR data directly reveal a strong influence of the background electrolyte on the actinide sorption. No significant Th adsorption was observed in 0.1 M NaClO (sub 4) , i.e., the Th coverage theta (Th), the number of Th per unit cell area of the muscovite surface (A (sub UC) = 46.72 Aa (super 2) ), was < or =0.01 Th/A (sub UC) , whereas limited uptake (theta (Th) approximately 0.04 Th/A (sub UC) ) was detected at a lower ionic strength (I = 0.01 M). These results are in stark contrast to the behavior of Th in 0.1 M NaCl which showed a coverage of 0.4 Th/A (sub UC) (Schmidt et al., 2012a). Th uptake was also influenced by the electrolyte cation. Weak adsorption was observed in 0.1 M KClO (sub 4) (theta (Th) approximately 0.07 Th/A (sub UC) ) similar to the results in NaClO (sub 4) at lower ionic strength. In contrast, strong adsorption was found in 0.1 M LiClO (sub 4) , with theta (Th) = 4.9 Th/A (sub UC) , a approximately 10-fold increase compared with that previously reported in NaCl. These differences are confirmed independently by ex situ alpha spectrometry, which shows no measurable Th coverage in 0.1 M NaClO (sub 4) background in contrast to a large coverage of 1.6 Th/A (sub UC) in 0.1 M LiClO (sub 4) . Alpha spectrometry cannot be obtained in situ, but sample preparation requires several washing steps that may affect Th(IV) sorption, RAXR, however, is considered to reflect the in situ sorption structure. The CTR/RAXR analyses of Th-LiClO (sub 4) show the sorption structure consisting of Th species that are broadly distributed, centered at heights of 4.1 Aa and 29 Aa distance from the interface. Neither the very large distribution height of the second species nor the high coverage can be explained with (hydrated) ionic adsorption, suggesting that the enhanced uptake is presumably due to the formation and sorption of Th nanoparticles. Abstract Copyright (2015) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Schmidt, Moritz AU - Hellebrandt, Stefan AU - Knope, Karah E AU - Lee, Sang Soo AU - Stubbs, Joanne E AU - Eng, Peter J AU - Soderholm, L AU - Fenter, Paul Y1 - 2015/09/15/ PY - 2015 DA - 2015 Sep 15 SP - 280 EP - 293 PB - Elsevier, New York, NY VL - 165 SN - 0016-7037, 0016-7037 KW - silicates KW - sorption KW - experimental studies KW - plutonium KW - muscovite KW - complexing KW - electrolytes KW - adsorption KW - X-ray reflectivity KW - mica group KW - metals KW - mathematical methods KW - thorium KW - sheet silicates KW - spectra KW - crystal chemistry KW - polymers KW - nanoparticles KW - actinides KW - Eh KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718054684?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Effects+of+the+background+electrolyte+on+Th%28IV%29+sorption+to+muscovite+mica&rft.au=Schmidt%2C+Moritz%3BHellebrandt%2C+Stefan%3BKnope%2C+Karah+E%3BLee%2C+Sang+Soo%3BStubbs%2C+Joanne+E%3BEng%2C+Peter+J%3BSoderholm%2C+L%3BFenter%2C+Paul&rft.aulast=Schmidt&rft.aufirst=Moritz&rft.date=2015-09-15&rft.volume=165&rft.issue=&rft.spage=280&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2015.05.039 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 67 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-10-01 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - actinides; adsorption; complexing; crystal chemistry; Eh; electrolytes; experimental studies; mathematical methods; metals; mica group; muscovite; nanoparticles; plutonium; polymers; sheet silicates; silicates; sorption; spectra; thorium; X-ray reflectivity DO - http://dx.doi.org/10.1016/j.gca.2015.05.039 ER - TY - JOUR T1 - Structural controls on groundwater flow in basement terrains; geophysical, remote sensing, and field investigations in Sinai AN - 1828846279; 2016-086161 AB - An integrated [very low frequency (VLF) electromagnetic, magnetic, remote sensing, field, and geographic information system (GIS)] study was conducted over the basement complex in southern Sinai (Feiran watershed) for a better understanding of the structural controls on the groundwater flow. The increase in satellite-based radar backscattering values following a large precipitation event (34 mm on 17-18 January 2010) was used to identify water-bearing features, here interpreted as preferred pathways for surface water infiltration. Findings include: (1) spatial analysis in a GIS environment revealed that the distribution of the water-bearing features (conductive features) corresponds to that of fractures, faults, shear zones, dike swarms, and wadi networks; (2) using VLF (43 profiles), magnetic (7 profiles) techniques, and field observations, the majority (85%) of the investigated conductive features were determined to be preferred pathways for groundwater flow; (3) northwest-southeast- to north-south-trending conductive features that intersect the groundwater flow (southeast to northwest) at low angles capture groundwater flow, whereas northeast-southwest to east-west features that intersect the flow at high angles impound groundwater upstream and could provide potential productive well locations; and (4) similar findings are observed in central Sinai: east-west-trending dextral shear zones (Themed and Sinai Hinge Belt) impede south to north groundwater flow as evidenced by the significant drop in hydraulic head (from 467 to 248 m above mean sea level) across shear zones and by reorientation of regional flow (south-north to southwest-northeast). The adopted integrated methodologies could be readily applied to similar highly fractured basement arid terrains elsewhere. Copyright 2015 Springer Science+Business Media Dordrecht JF - Surveys in Geophysics AU - Mohamed, Lamees AU - Sultan, Mohamed AU - Ahmed, Mohamed AU - Zaki, Abotalib AU - Sauck, William AU - Soliman, Farouk AU - Yan, Eugene AU - Elkadiri, Racha AU - Abouelmagd, Abdou Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 717 EP - 742 PB - Springer, Dordrecht VL - 36 IS - 5 SN - 0169-3298, 0169-3298 KW - geophysical surveys KW - North Africa KW - Sinai KW - geophysical methods KW - structural controls KW - radar methods KW - magnetic methods KW - preferential flow KW - ground water KW - Egypt KW - geographic information systems KW - magnetic profiles KW - electromagnetic methods KW - surveys KW - Africa KW - information systems KW - geophysical profiles KW - Asia KW - VLF methods KW - Middle East KW - backscattering KW - remote sensing KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1828846279?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Surveys+in+Geophysics&rft.atitle=Structural+controls+on+groundwater+flow+in+basement+terrains%3B+geophysical%2C+remote+sensing%2C+and+field+investigations+in+Sinai&rft.au=Mohamed%2C+Lamees%3BSultan%2C+Mohamed%3BAhmed%2C+Mohamed%3BZaki%2C+Abotalib%3BSauck%2C+William%3BSoliman%2C+Farouk%3BYan%2C+Eugene%3BElkadiri%2C+Racha%3BAbouelmagd%2C+Abdou&rft.aulast=Mohamed&rft.aufirst=Lamees&rft.date=2015-09-01&rft.volume=36&rft.issue=5&rft.spage=717&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-015-9331-5 L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 66 N1 - Document feature - geol. sketch map N1 - Last updated - 2016-10-25 N1 - CODEN - GPSVAK N1 - SubjectsTermNotLitGenreText - Africa; Asia; backscattering; Egypt; electromagnetic methods; geographic information systems; geophysical methods; geophysical profiles; geophysical surveys; ground water; information systems; magnetic methods; magnetic profiles; Middle East; North Africa; preferential flow; radar methods; remote sensing; Sinai; structural controls; surveys; VLF methods DO - http://dx.doi.org/10.1007/s10712-015-9331-5 ER - TY - JOUR T1 - A review of the remote sensing of lower tropospheric thermodynamic profiles and its indispensable role for the understanding and the simulation of water and energy cycles AN - 1789748610; 2016-042222 AB - A review of remote sensing technology for lower tropospheric thermodynamic (TD) profiling is presented with focus on high accuracy and high temporal-vertical resolution. The contributions of these instruments to the understanding of the Earth system are assessed with respect to radiative transfer, land surface-atmosphere feedback, convection initiation, and data assimilation. We demonstrate that for progress in weather and climate research, TD profilers are essential. These observational systems must resolve gradients of humidity and temperature in the stable or unstable atmospheric surface layer close to the ground, in the mixed layer, in the interfacial layer-usually characterized by an inversion-and the lower troposphere. A thorough analysis of the current observing systems is performed revealing significant gaps that must be addressed to fulfill existing needs. We analyze whether current and future passive and active remote sensing systems can close these gaps. A methodological analysis and demonstration of measurement capabilities with respect to bias and precision is executed both for passive and active remote sensing including passive infrared and microwave spectroscopy, the global navigation satellite system, as well as water vapor and temperature Raman lidar and water vapor differential absorption lidar. Whereas passive remote sensing systems are already mature with respect to operational applications, active remote sensing systems require further engineering to become operational in networks. However, active remote sensing systems provide a smaller bias as well as higher temporal and vertical resolutions. For a suitable mesoscale network design, TD profiler system developments should be intensified and dedicated observing system simulation experiments should be performed. Abstract Copyright (2015), The Authors. JF - Reviews of Geophysics AU - Wulfmeyer, Volker AU - Hardesty, R Michael AU - Turner, David D AU - Behrendt, Andreas AU - Cadeddu, Maria P AU - Di Girolamo, Paolo AU - Schluessel, Peter AU - van Baelen, Joel AU - Zus, Florian Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 819 EP - 895 PB - American Geophysical Union, Washington, DC VL - 53 IS - 3 SN - 8755-1209, 8755-1209 KW - tropical environment KW - hydrology KW - high-resolution methods KW - polar regions KW - numerical models KW - surface water KW - atmosphere KW - water vapor KW - atmospheric precipitation KW - troposphere KW - simulation KW - climate change KW - temperature KW - hydrologic cycle KW - climate effects KW - thermodynamic properties KW - image analysis KW - energy KW - remote sensing KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789748610?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Reviews+of+Geophysics&rft.atitle=A+review+of+the+remote+sensing+of+lower+tropospheric+thermodynamic+profiles+and+its+indispensable+role+for+the+understanding+and+the+simulation+of+water+and+energy+cycles&rft.au=Wulfmeyer%2C+Volker%3BHardesty%2C+R+Michael%3BTurner%2C+David+D%3BBehrendt%2C+Andreas%3BCadeddu%2C+Maria+P%3BDi+Girolamo%2C+Paolo%3BSchluessel%2C+Peter%3Bvan+Baelen%2C+Joel%3BZus%2C+Florian&rft.aulast=Wulfmeyer&rft.aufirst=Volker&rft.date=2015-09-01&rft.volume=53&rft.issue=3&rft.spage=819&rft.isbn=&rft.btitle=&rft.title=Reviews+of+Geophysics&rft.issn=87551209&rft_id=info:doi/10.1002%2F2014RG000476 L2 - http://agupubs.onlinelibrary.wiley.com/agu/journal/10.1002/(ISSN)1944-9208/issues/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 401 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2016-05-19 N1 - SubjectsTermNotLitGenreText - atmosphere; atmospheric precipitation; climate change; climate effects; energy; high-resolution methods; hydrologic cycle; hydrology; image analysis; numerical models; polar regions; remote sensing; simulation; surface water; temperature; thermodynamic properties; tropical environment; troposphere; water vapor DO - http://dx.doi.org/10.1002/2014RG000476 ER - TY - JOUR T1 - Irradiation behavior study of U-Mo/Al dispersion fuel with high energy Xe AN - 1765966343; PQ0002503667 AB - Irradiation responses of U-Mo/Al dispersion fuel have been investigated by irradiation with 84 MeV Xe super(26+) ions. Dispersion fuels fabricated with uncoated and ZrN-coated fuel particles were irradiated to various doses at ~350[degrees]C. The highest dose achieved was 2.9 x 10 super(17)ions/cm super(2) (~1200 displacement per atom (dpa)). Following the irradiation, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) experiments were carried out to characterize the microstructures of the irradiated samples. The post irradiation examinations (PIE) revealed that: (1) crystalline interdiffusion product (UMo)Alx developed at locations where no coating or compromised coating layer is present: (2) intact ZrN coating layers effectively blocked the interdiffusion between U-Mo and Al; (3) SEM-observable Xe bubbles distributed along grain/cell boundaries in U-Mo; and (4) gas bubble interlinkage was observed at a dose of 2.9 x 10 super(17)ions/cm super(2). JF - Journal of Nuclear Materials AU - Ye, B AU - Bhattacharya, S AU - Mo, K AU - Yun, D AU - Mohamed, W AU - Pellin, M AU - Fortner, J AU - Kim, Y S AU - Hofman, G L AU - Yacout, A M AU - Wiencek, T AU - Van den Berghe, S AU - Leenaers, A AD - Nuclear Engineering Division, Argonne National Laboratory, 9700 S. Cass Ave., Lemont, IL 60439, USA, bye@anl.gov Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 236 EP - 244 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 464 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Ions KW - Behavior KW - Irradiation KW - Fuels KW - Energy KW - Microscopy KW - Radioactive materials KW - Particulates KW - Grains KW - Coatings KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765966343?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=Irradiation+behavior+study+of+U-Mo%2FAl+dispersion+fuel+with+high+energy+Xe&rft.au=Ye%2C+B%3BBhattacharya%2C+S%3BMo%2C+K%3BYun%2C+D%3BMohamed%2C+W%3BPellin%2C+M%3BFortner%2C+J%3BKim%2C+Y+S%3BHofman%2C+G+L%3BYacout%2C+A+M%3BWiencek%2C+T%3BVan+den+Berghe%2C+S%3BLeenaers%2C+A&rft.aulast=Ye&rft.aufirst=B&rft.date=2015-09-01&rft.volume=464&rft.issue=&rft.spage=236&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2015.04.051 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Number of references - 58 N1 - Last updated - 2016-04-29 N1 - SubjectsTermNotLitGenreText - Ions; Behavior; Energy; Fuels; Irradiation; Radioactive materials; Microscopy; Particulates; Grains; Coatings DO - http://dx.doi.org/10.1016/j.jnucmat.2015.04.051 ER - TY - JOUR T1 - Global critical materials markets: An agent-based modeling approach AN - 1762079453; PQ0002117054 AB - As part of efforts to position the United States as a leader in clean energy technology production, the U.S. Department of Energy (DOE) issued two Critical Materials Strategy reports, which assessed 16 materials on the basis of their importance to clean energy development and their supply risk. To understand the implications for clean energy of disruptions in supplies of critical materials, it is important to understand supply chain dynamics from mining to final product production. As a case study of critical material supply chains, we focus on the supply of two rare earth metals, neodymium (Nd) and dysprosium (Dy), for permanent magnets used in wind turbines, electric vehicles and other applications. Scenarios that explore the impact of reducing the Dy content of magnets show the intricate inter-dependencies of these two markets as price trends for both rare earths reverse directions - reducing the Dy content of magnets reduces Dy demand, which drives down Dy prices and translates into tower magnet prices. This in turn raises the demand for magnets and therefore the demand for Nd and eventually drives up the Nd price. JF - Resources Policy AU - Riddle, Matthew AU - Macal, Charles M AU - Conzelmann, Guenter AU - Combs, Todd E AU - Bauer, Diana AU - Fields, Fletcher AD - Energy Systems Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA meriddle@anl.gov PY - 2015 SP - 307 EP - 321 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 45 SN - 0301-4207, 0301-4207 KW - Materials Business File (MB); Environmental Engineering Abstracts (EN) KW - Dysprosium KW - Neodymium KW - Rare earth KW - Critical material KW - Supply chain KW - Agent-based model KW - Demand KW - Strategic materials KW - Magnets KW - Clean energy KW - Markets KW - Rare earth metals KW - Government agencies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762079453?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Resources+Policy&rft.atitle=Global+critical+materials+markets%3A+An+agent-based+modeling+approach&rft.au=Riddle%2C+Matthew%3BMacal%2C+Charles+M%3BConzelmann%2C+Guenter%3BCombs%2C+Todd+E%3BBauer%2C+Diana%3BFields%2C+Fletcher&rft.aulast=Riddle&rft.aufirst=Matthew&rft.date=2015-09-01&rft.volume=45&rft.issue=&rft.spage=307&rft.isbn=&rft.btitle=&rft.title=Resources+Policy&rft.issn=03014207&rft_id=info:doi/10.1016%2Fj.resourpol.2015.01.002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Last updated - 2016-02-03 DO - http://dx.doi.org/10.1016/j.resourpol.2015.01.002 ER - TY - JOUR T1 - Towards accurate prediction of catalytic activity in IrO sub(2) nanoclusters via first principles-based variable charge force field AN - 1732837627; PQ0002068530 AB - IrO sub(2) is one of the most efficient electrocatalysts for the oxygen evolution reaction (OER), and also has other applications such as in pH sensors. Atomistic modeling of IrO sub(2) is critical for understanding the structure, chemistry, and nanoscale dynamics of IrO sub(2) in these applications. Such modeling has remained elusive due to the lack of an empirical force field (EFF) for IrO sub(2). We introduce a first-principles-based EFF that couples the Morse (MS) potential with a variable charge equilibration method, QEq. The EFF parameters are optimized using a genetic algorithm (GA) on a density functional theory (DFT)-based training set. The resultant Morse plus QEq EFF, "MS-Q" in short, successfully reproduces the lattice parameters, elastic constants, binding energies, and internal coordinates of various polymorphs of IrO sub(2) from DFT calculations. More importantly, MS-Q accurately captures key metrics for evaluating structural and chemical properties of catalysts such as surface energetics, equilibrium shape, electrostatic charges, oxygen vacancy formation energies, relative stability of low index rutile IrO sub(2) surfaces, and pressure-induced phase transformations. The MS-Q EFF is used to predict the oxygen binding energy (E sub(ad)), a well-known descriptor for OER activity, on various sites of a nanocatalyst. We find E sub(ad) to be more favorable at low coordination sites, i.e. edges and corners, compared to planar facets; E sub(ad) is also correlated with charge transfer between the adsorbed O and nanocrystal, highlighting the importance of variable charge electrostatics in modeling catalysis on metal oxide surfaces. Our variable charge force field offers encouraging prospects for carrying out large-scale reactive simulations to evaluate catalytic performance of IrO sub(2) surfaces and nanostructures. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Sen, F G AU - Kinaci, A AU - Narayanan, B AU - Gray, S K AU - Davis, MJ AU - Sankaranarayanan, SKRS AU - Chan, MKY AD - Center for Nanoscale Materials; Argonne National Laboratory; 9700 S. Cass Ave.; Lemont; IL 60439; USA; , mchan@anl.gov PY - 2015 SP - 18970 EP - 18982 PB - Royal Society of Chemistry VL - 3 IS - 37 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Prediction KW - Oxygen KW - Metals KW - Energy KW - pH sensors KW - Simulation KW - Catalysts KW - Chemical properties KW - Sustainability KW - Catalysis KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732837627?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Towards+accurate+prediction+of+catalytic+activity+in+IrO+sub%282%29+nanoclusters+via+first+principles-based+variable+charge+force+field&rft.au=Sen%2C+F+G%3BKinaci%2C+A%3BNarayanan%2C+B%3BGray%2C+S+K%3BDavis%2C+MJ%3BSankaranarayanan%2C+SKRS%3BChan%2C+MKY&rft.aulast=Sen&rft.aufirst=F&rft.date=2015-09-01&rft.volume=3&rft.issue=37&rft.spage=18970&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta04678e LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 88 N1 - Last updated - 2016-01-06 N1 - SubjectsTermNotLitGenreText - Prediction; Metals; Oxygen; Energy; pH sensors; Simulation; Catalysts; Chemical properties; Sustainability; Catalysis DO - http://dx.doi.org/10.1039/c5ta04678e ER - TY - JOUR T1 - Anomalous ultrafast dynamics of hot plasmonic electrons in nanostructures with hot spots. AN - 1709393272; 26237345 AB - The interaction of light and matter in metallic nanosystems is mediated by the collective oscillation of surface electrons, called plasmons. After excitation, plasmons are absorbed by the metal electrons through inter- and intraband transitions, creating a highly non-thermal distribution of electrons. The electron population then decays through electron-electron interactions, creating a hot electron distribution within a few hundred femtoseconds, followed by a further relaxation via electron-phonon scattering on the timescale of a few picoseconds. In the spectral domain, hot plasmonic electrons induce changes to the plasmonic resonance of the nanostructure by modifying the dielectric constant of the metal. Here, we report on the observation of anomalously strong changes to the ultrafast temporal and spectral responses of these excited hot plasmonic electrons in hybrid metal/oxide nanostructures as a result of varying the geometry and composition of the nanostructure and the excitation wavelength. In particular, we show a large ultrafast, pulsewidth-limited contribution to the excited electron decay signal in hybrid nanostructures containing hot spots. The intensity of this contribution correlates with the efficiency of the generation of highly excited surface electrons. Using theoretical models, we attribute this effect to the generation of hot plasmonic electrons from hot spots. We then develop general principles to enhance the generation of energetic electrons through specifically designed plasmonic nanostructures that could be used in applications where hot electron generation is beneficial, such as in solar photocatalysis, photodetectors and nonlinear devices. JF - Nature nanotechnology AU - Harutyunyan, Hayk AU - Martinson, Alex B F AU - Rosenmann, Daniel AU - Khorashad, Larousse Khosravi AU - Besteiro, Lucas V AU - Govorov, Alexander O AU - Wiederrecht, Gary P AD - Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA. ; Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA. ; Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA. Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 770 EP - 774 VL - 10 IS - 9 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709393272?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+nanotechnology&rft.atitle=Anomalous+ultrafast+dynamics+of+hot+plasmonic+electrons+in+nanostructures+with+hot+spots.&rft.au=Harutyunyan%2C+Hayk%3BMartinson%2C+Alex+B+F%3BRosenmann%2C+Daniel%3BKhorashad%2C+Larousse+Khosravi%3BBesteiro%2C+Lucas+V%3BGovorov%2C+Alexander+O%3BWiederrecht%2C+Gary+P&rft.aulast=Harutyunyan&rft.aufirst=Hayk&rft.date=2015-09-01&rft.volume=10&rft.issue=9&rft.spage=770&rft.isbn=&rft.btitle=&rft.title=Nature+nanotechnology&rft.issn=1748-3395&rft_id=info:doi/10.1038%2Fnnano.2015.165 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-12-22 N1 - Date created - 2015-09-02 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/nnano.2015.165 ER - TY - JOUR T1 - Key metabolic pathways involved in xenobiotic biotransformation and stress responses revealed by transcriptomics of the mangrove oyster Crassostrea brasiliana. AN - 1705008840; 26186662 AB - The Brazilian oyster Crassostrea brasiliana was challenged to three common environmental contaminants: phenanthrene, diesel fuel water-accommodated fraction (WAF) and domestic sewage. Total RNA was extracted from the gill and digestive gland, and cDNA libraries were sequenced using the 454 FLX platform. The assembled transcriptome resulted in ̃20,000 contigs, which were annotated to produce the first de novo transcriptome for C. brasiliana. Sequences were screened to identify genes potentially involved in the biotransformation of xenobiotics and associated antioxidant defence mechanisms. These gene families included those of the cytochrome P450 (CYP450), 70kDa heat shock, antioxidants, such as glutathione S-transferase, superoxide dismutase, catalase and also multi-drug resistance proteins. Analysis showed that the massive expansion of the CYP450 and HSP70 family due to gene duplication identified in the Crassostrea gigas genome also occurred in C. brasiliana, suggesting these processes form the base of the Crassostrea lineage. Preliminary expression analyses revealed several candidates biomarker genes that were up-regulated during each of the three treatments, suggesting the potential for environmental monitoring. JF - Aquatic toxicology (Amsterdam, Netherlands) AU - Lüchmann, Karim H AU - Clark, Melody S AU - Bainy, Afonso C D AU - Gilbert, Jack A AU - Craft, John A AU - Chipman, J Kevin AU - Thorne, Michael A S AU - Mattos, Jacó J AU - Siebert, Marília N AU - Schroeder, Declan C AD - Fishery Engineering Department, Santa Catarina State University, Laguna, Brazil. Electronic address: khluchmann@gmail.com. ; British Antarctic Survey, Natural Environment Research Council, Cambridge, UK. Electronic address: mscl@bas.ac.uk. ; Biochemistry Department, Federal University of Santa Catarina, Florianópolis, Brazil. Electronic address: afonso.bainy@ufsc.br. ; Biosciences Division (BIO), Argonne National Laboratory, Argonne, USA; Department of Ecology and Evolution, University of Chicago, Chicago, USA; Marine Biological Laboratory, Woods Hole, USA; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China. Electronic address: gilbertjack@anl.gov. ; Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK. Electronic address: J.A.Craft@gcu.ac.uk. ; School of Biological Sciences, The University of Birmingham, Birmingham, UK. Electronic address: j.k.chipman@bham.ac.uk. ; British Antarctic Survey, Natural Environment Research Council, Cambridge, UK. Electronic address: mior@bas.ac.uk. ; Biochemistry Department, Federal University of Santa Catarina, Florianópolis, Brazil. Electronic address: jaco.mattos@ufsc.br. ; Biochemistry Department, Federal University of Santa Catarina, Florianópolis, Brazil. Electronic address: marilia.siebert@ifsc.edu.br. ; Marine Biological Association of the United Kingdom (MBA), Plymouth, UK. Electronic address: dsch@mba.ac.uk. Y1 - 2015/09// PY - 2015 DA - September 2015 SP - 10 EP - 20 VL - 166 KW - Gasoline KW - 0 KW - Phenanthrenes KW - Sewage KW - Water Pollutants, Chemical KW - Xenobiotics KW - phenanthrene KW - 448J8E5BST KW - Index Medicus KW - Antioxidant parameters KW - Bioaccumulation KW - Pollutants KW - Polycyclic aromatic hydrocarbon KW - Xenobiotic metabolism KW - Bivalve KW - Animals KW - Metabolic Networks and Pathways -- genetics KW - Phenanthrenes -- metabolism KW - Gasoline -- toxicity KW - Xenobiotics -- metabolism KW - Stress, Physiological -- drug effects KW - Stress, Physiological -- genetics KW - Xenobiotics -- toxicity KW - Environmental Monitoring KW - Biotransformation -- genetics KW - Gills -- metabolism KW - Phenanthrenes -- toxicity KW - Brazil KW - Crassostrea -- genetics KW - Crassostrea -- drug effects KW - Water Pollutants, Chemical -- toxicity KW - Crassostrea -- metabolism KW - Transcriptome UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705008840?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.atitle=Key+metabolic+pathways+involved+in+xenobiotic+biotransformation+and+stress+responses+revealed+by+transcriptomics+of+the+mangrove+oyster+Crassostrea+brasiliana.&rft.au=L%C3%BCchmann%2C+Karim+H%3BClark%2C+Melody+S%3BBainy%2C+Afonso+C+D%3BGilbert%2C+Jack+A%3BCraft%2C+John+A%3BChipman%2C+J+Kevin%3BThorne%2C+Michael+A+S%3BMattos%2C+Jac%C3%B3+J%3BSiebert%2C+Mar%C3%ADlia+N%3BSchroeder%2C+Declan+C&rft.aulast=L%C3%BCchmann&rft.aufirst=Karim&rft.date=2015-09-01&rft.volume=166&rft.issue=&rft.spage=10&rft.isbn=&rft.btitle=&rft.title=Aquatic+toxicology+%28Amsterdam%2C+Netherlands%29&rft.issn=1879-1514&rft_id=info:doi/10.1016%2Fj.aquatox.2015.06.012 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-01-07 N1 - Date created - 2015-08-17 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.aquatox.2015.06.012 ER - TY - JOUR T1 - Adhesion and Atomic Structures of Gold on Ceria Nanostructures: The Role of Surface Structure and Oxidation State of Ceria Supports. AN - 1703721651; 26222267 AB - We report an aberration-corrected electron microscopy analysis of the adhesion and atomic structures of gold nanoparticle catalysts supported on ceria nanocubes and nanorods. Under oxidative conditions, the as-prepared gold nanoparticles on the ceria nanocubes have extended atom layers at the metal-support interface. In contrast, regular gold nanoparticles and rafts are present on the ceria nanorod supports. Under the reducing conditions of water-gas shift reaction, the extended gold atom layers and rafts vanish. In addition, the gold particles on the nanocubes change in morphology and increase in size while those on the nanorods are almost unchanged. The size, morphology, and atomic interface structures of gold strongly depend on the surface structures of ceria supports ((100) surface versus (111) surface) and the reaction environment (reductive versus oxidative). These findings provide insights into the deactivation mechanisms and the shape-dependent catalysis of oxide supported metal catalysts. JF - Nano letters AU - Lin, Yuyuan AU - Wu, Zili AU - Wen, Jianguo AU - Ding, Kunlun AU - Yang, Xiaoyun AU - Poeppelmeier, Kenneth R AU - Marks, Laurence D AD - †Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States. ; ‡Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States. ; §Electron Microscopy Center, Argonne National Laboratory, Argonne, Illinois 60439, United States. ; ⊥Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States. ; ∥2112 Vincenzo Walkway, San Jose, California 95133, United States. Y1 - 2015/08/12/ PY - 2015 DA - 2015 Aug 12 SP - 5375 EP - 5381 VL - 15 IS - 8 KW - Cerium KW - 30K4522N6T KW - ceric oxide KW - 619G5K328Y KW - Gold KW - 7440-57-5 KW - Index Medicus KW - aberration corrected STEM HAADF KW - catalysis KW - atomic structures KW - nanorods KW - adhesion KW - nanocube KW - ceria KW - Oxidation-Reduction KW - Nanotubes -- chemistry KW - Nanotubes -- ultrastructure KW - Catalysis KW - Nanostructures -- ultrastructure KW - Nanostructures -- chemistry KW - Cerium -- chemistry KW - Gold -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703721651?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Adhesion+and+Atomic+Structures+of+Gold+on+Ceria+Nanostructures%3A+The+Role+of+Surface+Structure+and+Oxidation+State+of+Ceria+Supports.&rft.au=Lin%2C+Yuyuan%3BWu%2C+Zili%3BWen%2C+Jianguo%3BDing%2C+Kunlun%3BYang%2C+Xiaoyun%3BPoeppelmeier%2C+Kenneth+R%3BMarks%2C+Laurence+D&rft.aulast=Lin&rft.aufirst=Yuyuan&rft.date=2015-08-12&rft.volume=15&rft.issue=8&rft.spage=5375&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b02694 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-06-27 N1 - Date created - 2015-08-12 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b02694 ER - TY - CPAPER T1 - An evolutionary perspective on metabolic tradeoffs in bacteria T2 - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AN - 1731767015; 6362278 JF - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AU - Weisenhorn, Pamela AU - Edirisinghe, Janaka AU - Henry, Chris Y1 - 2015/08/09/ PY - 2015 DA - 2015 Aug 09 KW - Evolution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731767015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.atitle=An+evolutionary+perspective+on+metabolic+tradeoffs+in+bacteria&rft.au=Weisenhorn%2C+Pamela%3BEdirisinghe%2C+Janaka%3BHenry%2C+Chris&rft.aulast=Weisenhorn&rft.aufirst=Pamela&rft.date=2015-08-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://eco.confex.com/eco/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - CPAPER T1 - Modeling landscape ecological integrity to support mitigation planning for renewable energy development T2 - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AN - 1731765078; 6361913 JF - 100th Annual Meeting of the Ecological Society of America (ESA 2015) AU - Walston Jr, Lee AU - Rollins, Katherine AU - Hartmann, Heidi AU - Krummel, John Y1 - 2015/08/09/ PY - 2015 DA - 2015 Aug 09 KW - Resource management KW - Mitigation KW - Renewable energy KW - Landscape KW - Conservation KW - Environment management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1731765078?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.atitle=Modeling+landscape+ecological+integrity+to+support+mitigation+planning+for+renewable+energy+development&rft.au=Walston+Jr%2C+Lee%3BRollins%2C+Katherine%3BHartmann%2C+Heidi%3BKrummel%2C+John&rft.aulast=Walston+Jr&rft.aufirst=Lee&rft.date=2015-08-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=100th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://eco.confex.com/eco/2015/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-06 N1 - Last updated - 2015-11-09 ER - TY - JOUR T1 - Progress in Mechanistic Understanding and Characterization Techniques of Li-S Batteries AN - 1770368019; PQ0001932205 AB - Rechargeable lithium-sulfur batteries that operate at room temperature have attracted much research interest as next-generation energy storage systems. Although tremendous advances have been made with Li-S batteries, great challenges still exist in achieving high capacity, high loading, high coulombic efficiency, and long cycle life. These challenges arise from the system complexity, lack of mechanistic understanding of the redox reaction, and operational limitations of Li-S cells. The focus here is on the recent gains in fundamental understanding of the Li-S redox reaction mechanism based on the application of advanced characterization techniques. Research results that help with the understanding of the close relationship between cell design (including development of new and advanced electrode materials, electrolytes, separators, binders, and cell configurations), the Li-S reaction mechanism, characterization methods, and Li-S battery performance are discussed. The development of high-performance and durable Li-S batteries relies significantly on the mechanistic understanding of the Li-S redox reaction and cell operational limitations due to the system complexity of Li-S cells. Recent gains in fundamental understanding of the Li-S redox reaction mechanism are discussed based on the application of advanced characterization techniques. JF - Advanced Energy Materials AU - Xu, Rui AU - Lu, Jun AU - Amine, Khalil AD - Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA. Y1 - 2015/08// PY - 2015 DA - August 2015 SP - n, a PB - Wiley-Blackwell, Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 5 IS - 16 SN - 1614-6832, 1614-6832 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); ANTE: Abstracts in New Technologies and Engineering (AN); Aerospace & High Technology Database (AH) KW - Rechargeable batteries KW - Redox reactions KW - Lithium sulfur batteries KW - Electrolytes KW - Electrolytic cells KW - Design engineering KW - Complexity KW - Gain KW - Yes:(AN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770368019?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advanced+Energy+Materials&rft.atitle=Progress+in+Mechanistic+Understanding+and+Characterization+Techniques+of+Li-S+Batteries&rft.au=Xu%2C+Rui%3BLu%2C+Jun%3BAmine%2C+Khalil&rft.aulast=Xu&rft.aufirst=Rui&rft.date=2015-08-01&rft.volume=5&rft.issue=16&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Advanced+Energy+Materials&rft.issn=16146832&rft_id=info:doi/10.1002%2Faenm.201500408 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-03-04 DO - http://dx.doi.org/10.1002/aenm.201500408 ER - TY - CPAPER T1 - Incorporating bioenergy in sustainable landscape designs: a discussion of bioenergy's potential role in conservation from two DOE workshops T2 - 70th Soil and Water Conservation Society International Annual Conference (SWCS 2015) AN - 1713510399; 6355664 JF - 70th Soil and Water Conservation Society International Annual Conference (SWCS 2015) AU - Negri, Maria AU - Dale, Virginia Y1 - 2015/07/26/ PY - 2015 DA - 2015 Jul 26 KW - Landscape KW - Conservation KW - Environment management KW - Biofuels UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1713510399?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=70th+Soil+and+Water+Conservation+Society+International+Annual+Conference+%28SWCS+2015%29&rft.atitle=Incorporating+bioenergy+in+sustainable+landscape+designs%3A+a+discussion+of+bioenergy%27s+potential+role+in+conservation+from+two+DOE+workshops&rft.au=Negri%2C+Maria%3BDale%2C+Virginia&rft.aulast=Negri&rft.aufirst=Maria&rft.date=2015-07-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=70th+Soil+and+Water+Conservation+Society+International+Annual+Conference+%28SWCS+2015%29&rft.issn=&rft_id=info:doi/ L2 - http://www.swcs.org/documents/filelibrary/15ac/Abstract_Book_FINAL_31A269C46D632.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-17 N1 - Last updated - 2015-09-18 ER - TY - JOUR T1 - Spectroscopic study of Gd nanostructures quantum confined in Fe corrals. AN - 1695756757; 26160318 AB - Low dimensional nanostructures have attracted attention due to their rich physical properties and potential applications. The essential factor for their functionality is their electronic properties, which can be modified by quantum confinement. Here the electronic states of Gd atom trapped in open Fe corrals on Ag(111) were studied via scanning tunneling spectroscopy. A single spectroscopic peak above the Fermi level is observed after Gd adatoms are trapped inside Fe corrals, while two peaks appear in empty corrals. The single peak position is close to the higher energy peak of the empty corrals. These findings, attributed to quantum confinement of the corrals and Gd structures trapped inside, are supported by tight-binding calculations. This demonstrates and provides insights into atom trapping in open corrals of various diameters, giving an alternative approach to modify the properties of nano-objects. JF - Scientific reports AU - Cao, R X AU - Sun, L AU - Miao, B F AU - Li, Q L AU - Zheng, C AU - Wu, D AU - You, B AU - Zhang, W AU - Han, P AU - Bader, S D AU - Zhang, W Y AU - Ding, H F AD - National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China. ; 1] National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China [2] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China. ; 1] Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093, P. R. China [2] School of Electronic Science and Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China. ; Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA. Y1 - 2015/07/10/ PY - 2015 DA - 2015 Jul 10 SP - 12092 VL - 5 KW - Silver KW - 3M4G523W1G KW - Gadolinium KW - AU0V1LM3JT KW - Iron KW - E1UOL152H7 KW - Index Medicus KW - Silver -- chemistry KW - Iron -- chemistry KW - Spectrum Analysis -- methods KW - Nanotechnology -- methods KW - Microscopy, Scanning Tunneling -- methods KW - Nanostructures -- chemistry KW - Gadolinium -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1695756757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+reports&rft.atitle=Spectroscopic+study+of+Gd+nanostructures+quantum+confined+in+Fe+corrals.&rft.au=Cao%2C+R+X%3BSun%2C+L%3BMiao%2C+B+F%3BLi%2C+Q+L%3BZheng%2C+C%3BWu%2C+D%3BYou%2C+B%3BZhang%2C+W%3BHan%2C+P%3BBader%2C+S+D%3BZhang%2C+W+Y%3BDing%2C+H+F&rft.aulast=Cao&rft.aufirst=R&rft.date=2015-07-10&rft.volume=5&rft.issue=&rft.spage=12092&rft.isbn=&rft.btitle=&rft.title=Scientific+reports&rft.issn=2045-2322&rft_id=info:doi/10.1038%2Fsrep12092 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-07-28 N1 - Date created - 2015-07-10 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Phys Rev Lett. 2012 May 11;108(19):197204 [23003082] Nat Nanotechnol. 2007 Feb;2(2):99-103 [18654227] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/srep12092 ER - TY - JOUR T1 - Structure Identification of Two-Dimensional Colloidal Semiconductor Nanocrystals with Atomic Flat Basal Planes. AN - 1695178500; 26055510 AB - Discrete nature of thickness and flat basal planes of two-dimensional (2D) nanostructures display unique diffraction features. Their origin was uncovered by a new analysis method of powder X-ray diffraction, which reveals thickness and lattice orientation of the 2D nanostructures. Results indicate necessity of adoption of a different unit cell from the corresponding bulk crystal with the same internal atomic packing. For CdSe 2D nanostructures with zinc blende atomic packing, pseudotetragonal lattices are adequate, instead of face-centered cubic. JF - Nano letters AU - Chen, Dongdong AU - Gao, Yuan AU - Chen, Yiya AU - Ren, Yang AU - Peng, Xiaogang AD - ‡X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States. Y1 - 2015/07/08/ PY - 2015 DA - 2015 Jul 08 SP - 4477 EP - 4482 VL - 15 IS - 7 KW - Cadmium Compounds KW - 0 KW - Colloids KW - Selenium Compounds KW - cadmium selenide KW - A7F646JC5C KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - nanocrystals KW - two-dimensional KW - thickness KW - simulation KW - unit-cell KW - XRD KW - X-Ray Diffraction KW - Models, Molecular KW - Quantum Dots -- chemistry KW - Quantum Dots -- ultrastructure KW - Colloids -- chemistry KW - Selenium Compounds -- chemistry KW - Cadmium Compounds -- chemistry KW - Zinc -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1695178500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Structure+Identification+of+Two-Dimensional+Colloidal+Semiconductor+Nanocrystals+with+Atomic+Flat+Basal+Planes.&rft.au=Chen%2C+Dongdong%3BGao%2C+Yuan%3BChen%2C+Yiya%3BRen%2C+Yang%3BPeng%2C+Xiaogang&rft.aulast=Chen&rft.aufirst=Dongdong&rft.date=2015-07-08&rft.volume=15&rft.issue=7&rft.spage=4477&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b00940 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-26 N1 - Date created - 2015-07-08 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b00940 ER - TY - JOUR T1 - Crystal structure of Cry51Aa1: A potential novel insecticidal aerolysin-type β-pore-forming toxin from Bacillus thuringiensis. AN - 1686422047; 25957471 AB - The structures of several Bacillus thuringiensis (Bt) insecticidal crystal proteins have been determined by crystallographic methods and a close relationship has been explicated between specific toxicities and conserved three-dimensional architectures. In this study, as a representative of the coleopteran- and hemipteran-specific Cry51A group, the complete structure of Cry51Aa1 protoxin has been determined by X-ray crystallography at 1.65 Å resolution. This is the first report of a coleopteran-active Bt insecticidal toxin with high structural similarity to the aerolysin-type β-pore forming toxins (β-PFTs). Moreover, study of featured residues and structural elements reveal their possible roles in receptor binding and pore formation events. This study provides new insights into the action of aerolysin-type β-PFTs from a structural perspective, and could be useful for the control of coleopteran and hemipteran insect pests in agricultures. JF - Biochemical and biophysical research communications AU - Xu, Chengchen AU - Chinte, Unmesh AU - Chen, Lirong AU - Yao, Qingqing AU - Meng, Ying AU - Zhou, Dayong AU - Bi, Li-Jun AU - Rose, John AU - Adang, Michael J AU - Wang, Bi-Cheng AU - Yu, Ziniu AU - Sun, Ming AD - State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA. ; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA; SER-CAT, University of Georgia and the Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA. ; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA. ; Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai, 200438, PR China. ; State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China. ; National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, PR China. ; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA; Department of Entomology, University of Georgia, Athens, GA, 30602, USA. ; Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA; SER-CAT, University of Georgia and the Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA. Electronic address: wang@bcl1.bmb.uga.edu. ; State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China. Electronic address: yz41@mail.hzau.edu.cn. ; State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China. Electronic address: m98sun@mail.hzau.edu.cn. Y1 - 2015/07/03/ PY - 2015 DA - 2015 Jul 03 SP - 184 EP - 189 VL - 462 IS - 3 KW - Bacterial Proteins KW - 0 KW - Bacterial Toxins KW - Endotoxins KW - Hemolysin Proteins KW - Pore Forming Cytotoxic Proteins KW - insecticidal crystal protein, Bacillus Thuringiensis KW - aerolysin KW - 53126-24-2 KW - Index Medicus KW - Pore-forming toxin KW - Bacillus thuringiensis KW - Crystal structure KW - Insecticidal KW - Animals KW - Models, Molecular KW - Molecular Sequence Data KW - Crystallography, X-Ray KW - Beetles KW - Amino Acid Sequence KW - Sequence Homology, Amino Acid KW - Pest Control, Biological KW - Protein Interaction Domains and Motifs KW - Protein Structure, Quaternary KW - Protein Conformation KW - Hemolysin Proteins -- chemistry KW - Endotoxins -- genetics KW - Bacterial Toxins -- genetics KW - Bacterial Proteins -- genetics KW - Bacterial Proteins -- chemistry KW - Bacillus thuringiensis -- chemistry KW - Hemolysin Proteins -- genetics KW - Bacterial Toxins -- chemistry KW - Pore Forming Cytotoxic Proteins -- genetics KW - Bacillus thuringiensis -- genetics KW - Pore Forming Cytotoxic Proteins -- chemistry KW - Endotoxins -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686422047?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biochemical+and+biophysical+research+communications&rft.atitle=Crystal+structure+of+Cry51Aa1%3A+A+potential+novel+insecticidal+aerolysin-type+%CE%B2-pore-forming+toxin+from+Bacillus+thuringiensis.&rft.au=Xu%2C+Chengchen%3BChinte%2C+Unmesh%3BChen%2C+Lirong%3BYao%2C+Qingqing%3BMeng%2C+Ying%3BZhou%2C+Dayong%3BBi%2C+Li-Jun%3BRose%2C+John%3BAdang%2C+Michael+J%3BWang%2C+Bi-Cheng%3BYu%2C+Ziniu%3BSun%2C+Ming&rft.aulast=Xu&rft.aufirst=Chengchen&rft.date=2015-07-03&rft.volume=462&rft.issue=3&rft.spage=184&rft.isbn=&rft.btitle=&rft.title=Biochemical+and+biophysical+research+communications&rft.issn=1090-2104&rft_id=info:doi/10.1016%2Fj.bbrc.2015.04.068 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-08-17 N1 - Date created - 2015-06-06 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.bbrc.2015.04.068 ER - TY - JOUR T1 - High-resolution dynamically downscaled projections of precipitation in the mid and late 21st century over North America AN - 1776648712; PQ0002794797 AB - This study performs high-spatial-resolution (12km) Weather Research and Forecasting (WRF) simulations over a very large domain (7200km6180km, covering much of North America) to explore changes in mean and extreme precipitation in the mid and late 21st century under Representative Concentration Pathways 4.5 (RCP 4.5) and 8.5 (RCP 8.5). We evaluate WRF model performance for a historical simulation and future projections, applying the Community Climate System Model version 4 (CCSM4) as initial and boundary conditions with and without a bias correction. WRF simulations using boundary and initial conditions from both versions of CCSM4 show smaller biases versus evaluation data sets than does CCSM4 over western North America. WRF simulations also improve spatial details of precipitation over much of North America. However, driving the WRF with the bias-corrected CCSM4 does not always reduce the bias. WRF-projected changes in precipitation include decreasing intensity over the southwestern United States, increasing intensity over the eastern United Sates and most of Canada, and an increase in the number of days with heavy precipitation over much of North America. Projected precipitation changes are more evident in the late 21st century than the mid 21st century, and they are more evident under RCP 8.5 than under RCP 4.5 in the late 21st century. Uncertainties in the projected changes in precipitation due to different warming scenarios are non-negligible. Differences in summer precipitation changes between WRF and CCSM4 are significant over most of the United States. Key Points * WRF adds significant value beyond CCSM4 * Bias correction of GCMs does not always reduce model bias * Extreme precipitation is projected to increase JF - Earth's Future AU - Wang, Jiali AU - Kotamarthi, Veerabhadra R AD - Environmental Science Division, Argonne National Laboratory, Lemont, Illinois, USA. Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 268 EP - 288 PB - Wiley Subscription Services, Inc. VL - 3 IS - 7 SN - 2328-4277, 2328-4277 KW - Sustainability Science Abstracts; Meteorological & Geoastrophysical Abstracts; Environment Abstracts KW - Historical account KW - Weather KW - Heavy precipitation KW - Climate models KW - Rainfall KW - Climate KW - Simulation KW - Summer KW - Precipitation KW - Boundary conditions KW - USA KW - Numerical simulations KW - General circulation models KW - Initial conditions KW - M3 1010:Issues in Sustainable Development KW - M2 551.509.1/.5:Forecasting (551.509.1/.5) KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1776648712?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth%27s+Future&rft.atitle=High-resolution+dynamically+downscaled+projections+of+precipitation+in+the+mid+and+late+21st+century+over+North+America&rft.au=Wang%2C+Jiali%3BKotamarthi%2C+Veerabhadra+R&rft.aulast=Wang&rft.aufirst=Jiali&rft.date=2015-07-01&rft.volume=3&rft.issue=7&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Earth%27s+Future&rft.issn=23284277&rft_id=info:doi/10.1002%2F2015EF000304 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-04-13 N1 - SubjectsTermNotLitGenreText - Heavy precipitation; Climate models; Numerical simulations; General circulation models; Precipitation; Initial conditions; Boundary conditions; Weather; Historical account; Rainfall; Climate; Simulation; Summer; USA DO - http://dx.doi.org/10.1002/2015EF000304 ER - TY - JOUR T1 - A multiphase interfacial model for the dissolution of spent nuclear fuel AN - 1732839390; PQ0002249582 AB - The Fuel Matrix Dissolution Model (FMDM) is an electrochemical reaction/diffusion model for the dissolution of spent uranium oxide fuel. The model was developed to provide radionuclide source terms for use in performance assessment calculations for various types of geologic repositories. It is based on mixed potential theory and consists of a two-phase fuel surface made up of UO[sub 2] and a noble metal bearing fission product phase in contact with groundwater. The corrosion potential at the surface of the dissolving fuel is calculated by balancing cathodic and anodic reactions occurring at the solution interfaces with UO[sub 2] and NMP surfaces. The model accurately predicts key experimental trends seen in literature data, the most important being the dramatic depression of the fuel dissolution rate by the presence of dissolved hydrogen at even relatively low concentrations. This paper presents the scientific basis of the model, the approach for modeling used fuel in a disposal system, and preliminary calculations to demonstrate the application and value of the model. JF - Journal of Nuclear Materials AU - Jerden, James L, Jr AU - Frey, Kurt AU - Ebert, William AD - Argonne National Laboratory, 9700 South Cass Ave., Argonne, IL 60439, USA, jerden@anl.gov Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 135 EP - 146 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 462 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Metals KW - Depression KW - Fuels KW - Performance assessment KW - Hydrogen KW - Fission products KW - Uranium KW - Radioactive materials KW - Nuclear fuels KW - Corrosion KW - Geology KW - Diffusion KW - Electrochemistry KW - Groundwater KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732839390?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=A+multiphase+interfacial+model+for+the+dissolution+of+spent+nuclear+fuel&rft.au=Jerden%2C+James+L%2C+Jr%3BFrey%2C+Kurt%3BEbert%2C+William&rft.aulast=Jerden&rft.aufirst=James&rft.date=2015-07-01&rft.volume=462&rft.issue=&rft.spage=135&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2015.03.036 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 76 N1 - Last updated - 2017-02-01 N1 - SubjectsTermNotLitGenreText - Metals; Depression; Fuels; Hydrogen; Performance assessment; Fission products; Uranium; Nuclear fuels; Radioactive materials; Corrosion; Diffusion; Geology; Groundwater; Electrochemistry DO - http://dx.doi.org/10.1016/j.jnucmat.2015.03.036 ER - TY - JOUR T1 - Durability and shielding performance of borated Ceramicrete coatings in beta and gamma radiation fields AN - 1732838922; PQ0002249585 AB - Ceramicrete(TM), a chemically bonded phosphate ceramic, was developed for nuclear waste immobilization and nuclear radiation shielding. Ceramicrete products are fabricated by an acid-base reaction between magnesium oxide and mono potassium phosphate. Fillers are used to impart desired properties to the product Ceramicrete's tailored compositions have resulted in several commercial structural products, including corrosion- and fire-protection coatings. Their borated version, called Borobond(TM), has been studied for its neutron shielding capabilities and is being used in structures built for storage of nuclear materials. This investigation assesses the durability and shielding performance of borated Ceramicrete coatings when exposed to gamma and beta radiations to predict the composition needed for optimal shielding performance in a realistic nuclear radiation field. Investigations were conducted using experimental data coupled with predictive Monte Carlo computer model. The results show that it is possible to produce products for simultaneous shielding of all three types of nuclear radiations, viz., neutrons, gamma-, and beta-rays. Additionally, because sprayable Ceramicrete coatings exhibit excellent corrosion-and fire-protection characteristics on steel, this research also establishes an opportunity to produce thick coatings to enhance the shielding performance of corrosion and fire protection coatings for use in high radiation environment in nuclear industry. JF - Journal of Nuclear Materials AU - Wagh, Arun S AU - Sayenko, S Yu AU - Dovbnya, A N AU - Shkuropatenko, V A AU - Tarasov, R V AU - Rybka, A V AU - Zakharchenko, A A AD - Environmental Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA, asw@anl.gov Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 165 EP - 172 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 462 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Monte Carlo simulation KW - Fires KW - Nuclear radiation KW - Radioactive wastes KW - Potassium KW - Beta radiation KW - Ceramics KW - Phosphates KW - Radiation KW - Computer models KW - Radioactive materials KW - Corrosion KW - Steel KW - Coatings KW - ENA 06:Food & Drugs UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732838922?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=Durability+and+shielding+performance+of+borated+Ceramicrete+coatings+in+beta+and+gamma+radiation+fields&rft.au=Wagh%2C+Arun+S%3BSayenko%2C+S+Yu%3BDovbnya%2C+A+N%3BShkuropatenko%2C+V+A%3BTarasov%2C+R+V%3BRybka%2C+A+V%3BZakharchenko%2C+A+A&rft.aulast=Wagh&rft.aufirst=Arun&rft.date=2015-07-01&rft.volume=462&rft.issue=&rft.spage=165&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2015.03.049 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 27 N1 - Last updated - 2016-02-29 N1 - SubjectsTermNotLitGenreText - Monte Carlo simulation; Nuclear radiation; Fires; Radioactive wastes; Potassium; Beta radiation; Ceramics; Phosphates; Computer models; Radiation; Radioactive materials; Corrosion; Steel; Coatings DO - http://dx.doi.org/10.1016/j.jnucmat.2015.03.049 ER - TY - JOUR T1 - A subtractive approach to molecular engineering of dimethoxybenzene-based redox materials for non-aqueous flow batteries AN - 1709168650; PQ0001909954 AB - The development of new high capacity redox active materials is key to realizing the potential of non-aqueous redox flow batteries (RFBs). In this paper, a series of substituted 1,4-dimethoxybenzene based redox active molecules have been developed viaa subtractive design approach. Five molecules have been proposed and developed by removing or reducing the bulky substituent groups of DBBB (2,5-di-tert-butyl-1,4-bis(2-methoxyethoxy)benzene ), a successful overcharge protection material for lithium-ion batteries. Of these derivatives, 2,3-dimethyl-1,4-dimethoxybenzene (23DDB) and 2,5-dimethyl-1,4-dimethoxybenzene (25DDB) are particularly promising as they demonstrate favorable electrochemical characteristics at gravimetric capacities (161 mA h g super(-1)) that approach the stability limit of chemically reversible dimethoxybenzene based structures. Diffusivity, solubility, and galvanostatic cycling results indicate that both 23DDB and 25DDB molecules have promise for non-aqueous RFBs. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Huang, Jinhua AU - Su, Liang AU - Kowalski, Jeffrey A AU - Barton, John L AU - Ferrandon, Magali AU - Burrell, Anthony K AU - Brushett, Fikile R AU - Zhang, Lu AD - Joint Center for Energy Storage Research; Argonne National Laboratory; Lemont; IL 60439; USA; , brushett@mit.edu Y1 - 2015/07// PY - 2015 DA - Jul 2015 SP - 14971 EP - 14976 PB - Royal Society of Chemistry VL - 3 IS - 29 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Batteries KW - Energy KW - Electrochemistry KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1709168650?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=A+subtractive+approach+to+molecular+engineering+of+dimethoxybenzene-based+redox+materials+for+non-aqueous+flow+batteries&rft.au=Huang%2C+Jinhua%3BSu%2C+Liang%3BKowalski%2C+Jeffrey+A%3BBarton%2C+John+L%3BFerrandon%2C+Magali%3BBurrell%2C+Anthony+K%3BBrushett%2C+Fikile+R%3BZhang%2C+Lu&rft.aulast=Huang&rft.aufirst=Jinhua&rft.date=2015-07-01&rft.volume=3&rft.issue=29&rft.spage=14971&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta02380g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Number of references - 21 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Batteries; Energy; Electrochemistry; Sustainability DO - http://dx.doi.org/10.1039/c5ta02380g ER - TY - JOUR T1 - The mobility of Nb in rutile-saturated NaCl- and NaF-bearing aqueous fluids from 1-6.5 GPa and 300-800 degrees C AN - 1707522387; 2015-082073 AB - Rutile (TiO (sub 2) ) is an important host phase for high field strength elements (HFSE) such as Nb in metamorphic and subduction zone environments. The observed depletion of Nb in arc rocks is often explained by the hypothesis that rutile sequesters HFSE in the subducted slab and overlying sediment, and is chemically inert with respect to aqueous fluids evolved during prograde metamorphism in the forearc to subarc environment. However, field observations of exhumed terranes, and experimental studies, indicate that HFSE may be soluble in complex aqueous fluids at high pressure (i.e., >0.5 GPa) and moderate to high temperature (i.e., >300 degrees C). In this study, we investigated experimentally the mobility of Nb in NaCl- and NaF-bearing aqueous fluids in equilibrium with Nb-bearing rutile at pressure-temperature conditions applicable to fluid evolution in arc environments. Niobium concentrations in aqueous fluid at rutile saturation were measured directly by using a hydrothermal diamond-anvil cell (HDAC) and synchrotron X-ray fluorescence (SXRF) at 2.1 to 6.5 GPa and 300-500 degrees C, and indirectly by performing mass loss experiments in a piston-cylinder (PC) apparatus at approximately 1 GPa and 700-800 degrees C. The concentration of Nb in a 10 wt% NaCl aqueous fluid increases from 6 to 11 mu g/g as temperature increases from 300 to 500 degrees C, over a pressure range from 2.1 to 2.8 GPa, consistent with a positive temperature dependence. The concentration of Nb in a 20 wt% NaCl aqueous fluid varies from 55 to 150 mu g/g at 300 to 500 degrees C, over a pressure range from 1.8 to 6.4 GPa; however, there is no discernible temperature or pressure dependence. The Nb concentration in a 4 wt% NaF-bearing aqueous fluid increases from 180 to 910 mu g/g as temperature increases from 300 to 500 degrees C over the pressure range 2.1 to 6.5 GPa. The data for the F-bearing fluid indicate that the Nb content of the fluid exhibits a dependence on temperature between 300 and 500 degrees C at > or =2 GPa, but there is no observed dependence on pressure. Together, the data demonstrate that the hydrothermal mobility of Nb is strongly controlled by the composition of the fluid, consistent with published data for Ti. At all experimental conditions, however, the concentration of Nb in the fluid is always lower than coexisting rutile, consistent with a role for rutile in moderating the Nb budget of arc rocks. JF - American Mineralogist AU - Tanis, Elizabeth A AU - Simon, Adam AU - Tschauner, Oliver AU - Chow, Paul AU - Xiao, Yuming AU - Burnley, Pamela C AU - Cline, Christopher J, II AU - Hanchar, John M AU - Pettke, Thomas AU - Shen, Guoyin AU - Zhao, Yusheng Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1600 EP - 1609 PB - Mineralogical Society of America, Washington, DC VL - 100 IS - 7 SN - 0003-004X, 0003-004X KW - subduction zones KW - mass spectra KW - fluid phase KW - aqueous solutions KW - sodium fluoride KW - temperature KW - electron probe data KW - synchrotron radiation KW - X-ray analysis KW - oxides KW - spectra KW - mobility KW - high-field-strength elements KW - sodium chloride KW - experimental studies KW - pressure KW - X-ray fluorescence KW - high pressure KW - hydrothermal conditions KW - ICP mass spectra KW - niobium KW - metals KW - rutile KW - anvil cells KW - high temperature KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707522387?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=The+mobility+of+Nb+in+rutile-saturated+NaCl-+and+NaF-bearing+aqueous+fluids+from+1-6.5+GPa+and+300-800+degrees+C&rft.au=Tanis%2C+Elizabeth+A%3BSimon%2C+Adam%3BTschauner%2C+Oliver%3BChow%2C+Paul%3BXiao%2C+Yuming%3BBurnley%2C+Pamela+C%3BCline%2C+Christopher+J%2C+II%3BHanchar%2C+John+M%3BPettke%2C+Thomas%3BShen%2C+Guoyin%3BZhao%2C+Yusheng&rft.aulast=Tanis&rft.aufirst=Elizabeth&rft.date=2015-07-01&rft.volume=100&rft.issue=7&rft.spage=1600&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2015-5031 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 62 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-08-27 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - anvil cells; aqueous solutions; electron probe data; experimental studies; fluid phase; high pressure; high temperature; high-field-strength elements; hydrothermal conditions; ICP mass spectra; mass spectra; metals; mobility; niobium; oxides; pressure; rutile; sodium chloride; sodium fluoride; spectra; subduction zones; synchrotron radiation; temperature; X-ray analysis; X-ray fluorescence DO - http://dx.doi.org/10.2138/am-2015-5031 ER - TY - JOUR T1 - Diverse protist grazers select for virulence-related traits in Legionella. AN - 1691017470; 25575308 AB - It is generally accepted that selection for resistance to grazing by protists has contributed to the evolution of Legionella pneumophila as a pathogen. Grazing resistance is becoming more generally recognized as having an important role in the ecology and evolution of bacterial pathogenesis. However, selection for grazing resistance presupposes the existence of protist grazers that provide the selective pressure. To determine whether there are protists that graze on pathogenic Legionella species, we investigated the existence of such organisms in a variety of environmental samples. We isolated and characterized diverse protists that graze on L. pneumophila and determined the effects of adding L. pneumophila on the protist community structures in microcosms made from these environmental samples. Several unrelated organisms were able to graze efficiently on L. pneumophila. The community structures of all samples were markedly altered by the addition of L. pneumophila. Surprisingly, some of the Legionella grazers were closely related to species that are known hosts for L. pneumophila, indicating the presence of unknown specificity determinants for this interaction. These results provide the first direct support for the hypothesis that protist grazers exert selective pressure on Legionella to acquire and retain adaptations that contribute to survival, and that these properties are relevant to the ability of the bacteria to cause disease in people. We also report a novel mechanism of killing of amoebae by one Legionella species that requires an intact Type IV secretion system but does not involve intracellular replication. We refer to this phenomenon as 'food poisoning'. JF - The ISME journal AU - Amaro, Francisco AU - Wang, Wen AU - Gilbert, Jack A AU - Anderson, O Roger AU - Shuman, Howard A AD - Department of Microbiology, University of Chicago, Chicago, IL, USA. ; Jiangsu Key Laboratory for Biodiversity & Biotechnology, Nanjing Normal University, Nanjing, People's Republic of China. ; Biology Division, Argonne National Laboratory and Department of Ecology & Evolution, University of Chicago, Chicago, IL, USA. ; Division of Biology and Paleo Environment, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA. Y1 - 2015/07// PY - 2015 DA - July 2015 SP - 1607 EP - 1618 VL - 9 IS - 7 KW - Index Medicus KW - Virulence KW - Humans KW - Selection, Genetic KW - Environmental Microbiology KW - Amoeba -- physiology KW - Legionella pneumophila -- genetics KW - Legionella pneumophila -- pathogenicity KW - Legionella pneumophila -- physiology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1691017470?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+ISME+journal&rft.atitle=Diverse+protist+grazers+select+for+virulence-related+traits+in+Legionella.&rft.au=Amaro%2C+Francisco%3BWang%2C+Wen%3BGilbert%2C+Jack+A%3BAnderson%2C+O+Roger%3BShuman%2C+Howard+A&rft.aulast=Amaro&rft.aufirst=Francisco&rft.date=2015-07-01&rft.volume=9&rft.issue=7&rft.spage=1607&rft.isbn=&rft.btitle=&rft.title=The+ISME+journal&rft.issn=1751-7370&rft_id=info:doi/10.1038%2Fismej.2014.248 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-02-23 N1 - Date created - 2015-06-23 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Environ Microbiol. 2012 Aug;14(8):1830-43 [22040156] Int J Syst Evol Microbiol. 2002 Mar;52(Pt 2):297-354 [11931142] Infect Immun. 2000 May;68(5):2939-47 [10768992] N Engl J Med. 1977 Dec 1;297(22):1197-203 [335245] J Clin Pathol. 1980 Dec;33(12):1179-83 [7451664] J Clin Invest. 1984 Sep;74(3):771-82 [6470140] Infect Immun. 1985 Nov;50(2):449-52 [4055026] J Immunol. 1988 Jun 1;140(11):3978-81 [3131422] J Appl Bacteriol. 1990 May;68(5):519-25 [2196257] Mol Microbiol. 1993 Jan;7(1):7-19 [8382332] Trends Microbiol. 1996 Jul;4(7):286-90 [8829338] Infect Immun. 1997 Nov;65(11):4738-46 [9353059] Science. 1998 Feb 6;279(5352):873-6 [9452389] Proc Natl Acad Sci U S A. 1998 Feb 17;95(4):1669-74 [9465074] Infect Immun. 1999 May;67(5):2117-24 [10225863] Appl Environ Microbiol. 2005 Jan;71(1):20-8 [15640165] Trends Microbiol. 2005 Jul;13(7):302-7 [15935676] Nat Rev Microbiol. 2005 Jul;3(7):537-46 [15953930] J Eukaryot Microbiol. 2005 Sep-Oct;52(5):399-451 [16248873] Microb Ecol. 2005 Nov;50(4):536-49 [16341636] Microb Ecol. 2007 Feb;53(2):328-39 [17264997] Trends Microbiol. 2007 Aug;15(8):372-80 [17632005] FEMS Microbiol Lett. 2009 Jan;290(1):10-7 [19016880] Curr Opin Microbiol. 2009 Feb;12(1):67-73 [19157961] Cell Microbiol. 2009 Oct;11(10):1435-43 [19563462] Biol Lett. 2010 Oct 23;6(5):639-42 [20219744] Appl Environ Microbiol. 2010 Nov;76(21):7144-53 [20851993] J Eukaryot Microbiol. 2011 Jan-Feb;58(1):60-7 [21182560] Nature. 2011 Jan 20;469(7330):323-35 [21248839] Proc Natl Acad Sci U S A. 2011 Mar 15;108 Suppl 1:4516-22 [20534432] Bioinformatics. 2011 Aug 15;27(16):2194-200 [21700674] Cell Microbiol. 2011 Sep;13(9):1319-27 [21740500] Proc Natl Acad Sci U S A. 2011 Sep 6;108(36):14733-40 [21873199] Cell Microbiol. 2012 Jan;14(1):19-27 [21985602] Protist. 2012 Mar;163(2):165-87 [22209009] Eukaryot Cell. 2012 Apr;11(4):382-7 [22366126] Int J Syst Evol Microbiol. 2012 Aug;62(Pt 8):1766-71 [21948093] J Eukaryot Microbiol. 2012 Sep;59(5):429-93 [23020233] Methods Mol Biol. 2013;954:595-602 [23150423] Nucleic Acids Res. 2013 Jan;41(Database issue):D590-6 [23193283] Trends Microbiol. 2012 Jun;20(6):299-306 [22494803] FEMS Microbiol Rev. 2010 May;34(3):260-80 [20113355] N Engl J Med. 1977 Dec 1;297(22):1189-97 [335244] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/ismej.2014.248 ER - TY - JOUR T1 - Rational Design of Multilayer Collagen Nanosheets with Compositional and Structural Control. AN - 1691293739; 26021882 AB - Two collagen-mimetic peptides, CP(+) and CP(-), are reported in which the sequences comprise a multiblock architecture having positively charged N-terminal (Pro-Arg-Gly)3 and negatively charged C-terminal (Glu-Hyp-Gly)3 triad extensions, respectively. CP(+) rapidly self-associates into positively charged nanosheets based on a monolayer structure. In contrast, CP(-) self-assembles to form negatively charged monolayer nanosheets at a much slower rate, which can be accelerated in the presence of calcium(II) ion. A 2:1 mixture of unassociated CP(-) peptide with preformed CP(+) nanosheets generates structurally defined triple-layer nanosheets in which two CP(-) monolayers have formed on the identical surfaces of the CP(+) nanosheet template. Experimental data from electrostatic force microscopy (EFM) image analysis, zeta potential measurements, and charged nanoparticle binding assays support a negative surface charge state for the triple-layer nanosheets, which is the reverse of the positive surface charge state observed for the CP(+) monolayer nanosheets. The electrostatic complementarity between the CP(+) and CP(-) triple helical cohesive ends at the layer interfaces promotes a (CP(-)/CP(+)/CP(-)) compositional gradient along the z-direction of the nanosheet. This structurally informed approach represents an attractive strategy for the fabrication of two-dimensional nanostructures with compositional control. JF - Journal of the American Chemical Society AU - Jiang, Tao AU - Vail, Owen A AU - Jiang, Zhigang AU - Zuo, Xiaobing AU - Conticello, Vincent P AD - †Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States. ; ‡School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States. ; §X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States. Y1 - 2015/06/24/ PY - 2015 DA - 2015 Jun 24 SP - 7793 EP - 7802 VL - 137 IS - 24 KW - Peptides KW - 0 KW - Collagen KW - 9007-34-5 KW - Index Medicus KW - Static Electricity KW - Protein Structure, Secondary KW - Models, Molecular KW - Molecular Sequence Data KW - Circular Dichroism KW - Amino Acid Sequence KW - Nanostructures -- ultrastructure KW - Nanostructures -- chemistry KW - Peptides -- chemistry KW - Collagen -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1691293739?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=Rational+Design+of+Multilayer+Collagen+Nanosheets+with+Compositional+and+Structural+Control.&rft.au=Jiang%2C+Tao%3BVail%2C+Owen+A%3BJiang%2C+Zhigang%3BZuo%2C+Xiaobing%3BConticello%2C+Vincent+P&rft.aulast=Jiang&rft.aufirst=Tao&rft.date=2015-06-24&rft.volume=137&rft.issue=24&rft.spage=7793&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Chemical+Society&rft.issn=1520-5126&rft_id=info:doi/10.1021%2Fjacs.5b03326 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-03-21 N1 - Date created - 2015-06-24 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/jacs.5b03326 ER - TY - JOUR T1 - Bidirectional Photoinduced Electron Transfer in Ruthenium(II)-Tris-bipyridyl-Modified PpcA, a Multi-heme c-Type Cytochrome from Geobacter sulfurreducens. AN - 1690212795; 25731703 AB - PpcA, a tri-heme cytochrome c7 from Geobacter sulfurreducens, was investigated as a model for photosensitizer-initiated electron transfer within a multi-heme "molecular wire" protein architecture. Escherichia coli expression of PpcA was found to be tolerant of cysteine site-directed mutagenesis, demonstrated by the successful expression of natively folded proteins bearing cysteine mutations at a series of sites selected to vary characteristically with respect to the three -CXXCH- heme binding domains. The introduced cysteines readily reacted with Ru(II)-(2,2'-bpy)2(4-bromomethyl-4'-methyl-2,2'-bipyridine) to form covalently linked constructs that support both photo-oxidative and photo-reductive quenching of the photosensitizer excited state, depending upon the initial heme redox state. Excited-state electron-transfer times were found to vary from 6 × 10(-12) to 4 × 10(-8) s, correlated with the distance and pathways for electron transfer. The fastest rate is more than 10(3)-fold faster than previously reported for photosensitizer-redox protein constructs using amino acid residue linking. Clear evidence for inter-heme electron transfer within the multi-heme protein is not detected within the lifetimes of the charge-separated states. These results demonstrate an opportunity to develop multi-heme c-cytochromes for investigation of electron transfer in protein "molecular wires" and to serve as frameworks for metalloprotein designs that support multiple-electron-transfer redox chemistry. JF - The journal of physical chemistry. B AU - Kokhan, Oleksandr AU - Ponomarenko, Nina S AU - Pokkuluri, P Raj AU - Schiffer, Marianne AU - Mulfort, Karen L AU - Tiede, David M AD - †Chemical Sciences and Engineering Division and ‡Biosciences Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States. Y1 - 2015/06/18/ PY - 2015 DA - 2015 Jun 18 SP - 7612 EP - 7624 VL - 119 IS - 24 KW - Cytochrome c Group KW - 0 KW - 2,2'-Dipyridyl KW - 551W113ZEP KW - Ruthenium KW - 7UI0TKC3U5 KW - Index Medicus KW - Electron Transport KW - Models, Molecular KW - Photochemical Processes KW - Cytochrome c Group -- chemistry KW - 2,2'-Dipyridyl -- chemistry KW - Cytochrome c Group -- metabolism KW - Geobacter -- enzymology KW - Ruthenium -- chemistry KW - 2,2'-Dipyridyl -- metabolism KW - Ruthenium -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1690212795?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+journal+of+physical+chemistry.+B&rft.atitle=Bidirectional+Photoinduced+Electron+Transfer+in+Ruthenium%28II%29-Tris-bipyridyl-Modified+PpcA%2C+a+Multi-heme+c-Type+Cytochrome+from+Geobacter+sulfurreducens.&rft.au=Kokhan%2C+Oleksandr%3BPonomarenko%2C+Nina+S%3BPokkuluri%2C+P+Raj%3BSchiffer%2C+Marianne%3BMulfort%2C+Karen+L%3BTiede%2C+David+M&rft.aulast=Kokhan&rft.aufirst=Oleksandr&rft.date=2015-06-18&rft.volume=119&rft.issue=24&rft.spage=7612&rft.isbn=&rft.btitle=&rft.title=The+journal+of+physical+chemistry.+B&rft.issn=1520-5207&rft_id=info:doi/10.1021%2Fjp511558f LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-03-10 N1 - Date created - 2015-06-18 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/jp511558f ER - TY - JOUR T1 - Structural Diversity of Arthropod Biophotonic Nanostructures Spans Amphiphilic Phase-Space. AN - 1687649782; 25938382 AB - Many organisms, especially arthropods, produce vivid interference colors using diverse mesoscopic (100-350 nm) integumentary biophotonic nanostructures that are increasingly being investigated for technological applications. Despite a century of interest, precise structural knowledge of many biophotonic nanostructures and the mechanisms controlling their development remain tentative, when such knowledge can open novel biomimetic routes to facilely self-assemble tunable, multifunctional materials. Here, we use synchrotron small-angle X-ray scattering and electron microscopy to characterize the photonic nanostructure of 140 integumentary scales and setae from ∼127 species of terrestrial arthropods in 85 genera from 5 orders. We report a rich nanostructural diversity, including triply periodic bicontinuous networks, close-packed spheres, inverse columnar, perforated lamellar, and disordered spongelike morphologies, commonly observed as stable phases of amphiphilic surfactants, block copolymer, and lyotropic lipid-water systems. Diverse arthropod lineages appear to have independently evolved to utilize the self-assembly of infolding lipid-bilayer membranes to develop biophotonic nanostructures that span the phase-space of amphiphilic morphologies, but at optical length scales. JF - Nano letters AU - Saranathan, Vinodkumar AU - Seago, Ainsley E AU - Sandy, Alec AU - Narayanan, Suresh AU - Mochrie, Simon G J AU - Dufresne, Eric R AU - Cao, Hui AU - Osuji, Chinedum O AU - Prum, Richard O AD - †Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore. ; §CSIRO Ecosystem Sciences, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia. ; ∥Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States. Y1 - 2015/06/10/ PY - 2015 DA - 2015 Jun 10 SP - 3735 EP - 3742 VL - 15 IS - 6 KW - Index Medicus KW - self-assembly KW - biomimetics KW - Biophotonic nanostructures KW - structural colors KW - iridescence KW - membrane-folding KW - Animals KW - Pigmentation KW - Arthropods -- ultrastructure KW - Nanostructures -- ultrastructure KW - Nanostructures -- chemistry KW - Arthropods -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1687649782?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Structural+Diversity+of+Arthropod+Biophotonic+Nanostructures+Spans+Amphiphilic+Phase-Space.&rft.au=Saranathan%2C+Vinodkumar%3BSeago%2C+Ainsley+E%3BSandy%2C+Alec%3BNarayanan%2C+Suresh%3BMochrie%2C+Simon+G+J%3BDufresne%2C+Eric+R%3BCao%2C+Hui%3BOsuji%2C+Chinedum+O%3BPrum%2C+Richard+O&rft.aulast=Saranathan&rft.aufirst=Vinodkumar&rft.date=2015-06-10&rft.volume=15&rft.issue=6&rft.spage=3735&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b00201 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-05-23 N1 - Date created - 2015-06-10 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b00201 ER - TY - JOUR T1 - Benzene selectivity in competitive arene hydrogenation: effects of single-site catalyst···acidic oxide surface binding geometry. AN - 1686065790; 25884397 AB - Organozirconium complexes are chemisorbed on Brønsted acidic sulfated ZrO2 (ZrS), sulfated Al2O3 (AlS), and ZrO2-WO3 (ZrW). Under mild conditions (25 °C, 1 atm H2), the supported Cp*ZrMe3, Cp*ZrBz3, and Cp*ZrPh3 catalysts are very active for benzene hydrogenation with activities declining with decreasing acidity, ZrS ≫ AlS ≈ ZrW, arguing that more Brønsted acidic oxides (those having weaker corresponding conjugate bases) yield stronger surface organometallic electrophiles and for this reason have higher benzene hydrogenation activity. Benzene selective hydrogenation, a potential approach for carcinogenic benzene removal from gasoline, is probed using benzene/toluene mixtures, and selectivities for benzene hydrogenation vary with catalyst as ZrBz3(+)/ZrS(-), 83% > Cp*ZrMe2(+)/ZrS(-), 80% > Cp*ZrBz2(+)/ZrS(-), 67% > Cp*ZrPh2(+)/ZrS(-), 57%. For Cp*ZrBz2(+)/ZrS(-), which displays the highest benzene hydrogenation activity with moderate selectivity in benzene/toluene mixtures. Other benzene/arene mixtures are examined, and benzene selectivities vary with arene as mesitylene, 99%, > ethylbenzene, 86% > toluene, 67%. Structural and computational studies by solid-state NMR spectroscopy, XAS, and periodic DFT methods applied to supported Cp*ZrMe3 and Cp*ZrBz3 indicate that larger Zr···surface distances are present in more sterically encumbered Cp*ZrBz2(+)/AlS(-) vs Cp*ZrMe2(+)/AlS(-). The combined XAS, solid state NMR, and DFT data argue that the bulky catalyst benzyl groups expand the "cationic" metal center-anionic sulfated oxide surface distances, and this separation/weakened ion-pairing enables the activation/insertion of more sterically encumbered arenes and influences hydrogenation rates and selectivity patterns. JF - Journal of the American Chemical Society AU - Gu, Weixing AU - Stalzer, Madelyn Marie AU - Nicholas, Christopher P AU - Bhattacharyya, Alak AU - Motta, Alessandro AU - Gallagher, James R AU - Zhang, Guanghui AU - Miller, Jeffrey T AU - Kobayashi, Takeshi AU - Pruski, Marek AU - Delferro, Massimiliano AU - Marks, Tobin J AD - †Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States. ; ‡Exploratory Catalysis Research, UOP LLC, a Honeywell Company, 25 East Algonquin Road, Des Plaines, Illinois 60017, United States. ; §Dipartimento di Chimica, Universita' degli Studi di Roma "La Sapienza" and INSTM UdR Roma, p.le A. Moro 5, I-00185, Roma, Italy. ; ∥Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439 United States. ; ⊥U.S. DOE Ames Laboratory, Iowa State University, Ames, Iowa 50011-3020, United States. Y1 - 2015/06/03/ PY - 2015 DA - 2015 Jun 03 SP - 6770 EP - 6780 VL - 137 IS - 21 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686065790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Chemical+Society&rft.atitle=Benzene+selectivity+in+competitive+arene+hydrogenation%3A+effects+of+single-site+catalyst%C2%B7%C2%B7%C2%B7acidic+oxide+surface+binding+geometry.&rft.au=Gu%2C+Weixing%3BStalzer%2C+Madelyn+Marie%3BNicholas%2C+Christopher+P%3BBhattacharyya%2C+Alak%3BMotta%2C+Alessandro%3BGallagher%2C+James+R%3BZhang%2C+Guanghui%3BMiller%2C+Jeffrey+T%3BKobayashi%2C+Takeshi%3BPruski%2C+Marek%3BDelferro%2C+Massimiliano%3BMarks%2C+Tobin+J&rft.aulast=Gu&rft.aufirst=Weixing&rft.date=2015-06-03&rft.volume=137&rft.issue=21&rft.spage=6770&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Chemical+Society&rft.issn=1520-5126&rft_id=info:doi/10.1021%2Fjacs.5b03254 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-08-24 N1 - Date created - 2015-06-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/jacs.5b03254 ER - TY - JOUR T1 - Performance of WRF-Chem over Indian region; comparison with measurements AN - 1832626773; 755838-15 AB - The aerosol mass concentrations over several Indian regions have been simulated using the online chemistry transport model, WRF-Chem, for two distinct seasons of 2011, representing the pre-monsoon (May) and post-monsoon (October) periods during the Indo-US joint experiment 'Ganges Valley Aerosol Experiment (GVAX)'. The simulated values were compared with concurrent measurements. It is found that the model systematically underestimates near-surface BC mass concentrations as well as columnar Aerosol Optical Depths (AODs) from the measurements. Examining this in the light of the model-simulated meteorological parameters, we notice the model overestimates both planetary boundary layer height (PBLH) and surface wind speeds, leading to deeper mixing and dispersion and hence lower surface concentrations of aerosols. Shortcoming in simulating rainfall pattern also has an impact through the scavenging effect. It also appears that the columnar AODs are influenced by the unrealistic emission scenarios in the model. Comparison with vertical profiles of BC obtained from aircraft-based measurements also shows a systematic underestimation by the model at all levels. It is seen that concentration of other aerosols, viz., dust and sea-salt are closely linked with meteorological conditions prevailing over the region. Dust is higher during pre-monsoon periods due to the prevalence of north-westerly winds that advect dust from deserts of west Asia into the Indo-Gangetic plain. Winds and rainfall influence sea-salt concentrations. Thus, the unrealistic simulation of wind and rainfall leads to model simulated dust and sea-salt also to deviate from the real values; which together with BC also causes underperformance of the model with regard to columnar AOD. It appears that for better simulations of aerosols over Indian region, the model needs an improvement in the simulation of the meteorology. Copyright 2015 Indian Academy of Sciences JF - Proceedings of the Indian Academy of Sciences: Earth and Planetary Sciences AU - Govardhan, Gaurav AU - Nanjundiah, Ravi S AU - Satheesh, S K AU - Krishnamoorthy, K AU - Kotamarthi, V R Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 875 EP - 896 PB - Springer India, New Delhi VL - 124 IS - 4 SN - 0253-4126, 0253-4126 KW - clastic sediments KW - pollutants KW - pollution KW - WRF-Chem model KW - simulation KW - India KW - Indian Peninsula KW - dust KW - sediments KW - aerosols KW - seasonal variations KW - Asia KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832626773?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Indian+Academy+of+Sciences%3A+Earth+and+Planetary+Sciences&rft.atitle=Performance+of+WRF-Chem+over+Indian+region%3B+comparison+with+measurements&rft.au=Govardhan%2C+Gaurav%3BNanjundiah%2C+Ravi+S%3BSatheesh%2C+S+K%3BKrishnamoorthy%2C+K%3BKotamarthi%2C+V+R&rft.aulast=Govardhan&rft.aufirst=Gaurav&rft.date=2015-06-01&rft.volume=124&rft.issue=4&rft.spage=875&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Indian+Academy+of+Sciences%3A+Earth+and+Planetary+Sciences&rft.issn=02534126&rft_id=info:doi/10.1007%2Fs12040-015-0576-7 L2 - http://link.springer.com/journal/12040 LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Last updated - 2017-01-24 N1 - CODEN - PISAA7 N1 - SubjectsTermNotLitGenreText - aerosols; Asia; clastic sediments; dust; India; Indian Peninsula; pollutants; pollution; seasonal variations; sediments; simulation; WRF-Chem model DO - http://dx.doi.org/10.1007/s12040-015-0576-7 ER - TY - JOUR T1 - Integrating solar PV (photovoltaics) in utility system operations: Analytical framework and Arizona case study AN - 1732828746; PQ0002043309 AB - A systematic framework is proposed to estimate the impact on operating costs due to uncertainty and variability in renewable resources. The framework quantifies the integration costs associated with sub-hourly variability and uncertainty as well as day-ahead forecasting errors in solar PV (photovoltaics) power. A case study illustrates how changes in system operations may affect these costs for a utility in the southwestern United States (Arizona Public Service Company). We conduct an extensive sensitivity analysis under different assumptions about balancing reserves, system flexibility, fuel prices, and forecasting errors. We find that high solar PV penetrations may lead to operational challenges, particularly during low-load and high solar periods. Increased system flexibility is essential for minimizing integration costs and maintaining reliability. In a set of sensitivity cases where such flexibility is provided, in part, by flexible operations of nuclear power plants, the estimated integration costs vary between $1.0 and $4.4/MWh-PV for a PV penetration level of 17%. The integration costs are primarily due to higher needs for hour-ahead balancing reserves to address the increased sub-hourly variability and uncertainty in the PV resource. JF - Energy AU - Wu, Jing AU - Botterud, Audun AU - Mills, Andrew AU - Zhou, Zhi AU - Hodge, Bri-Mathias AU - Heaney, Mike AD - Argonne National Laboratory, Lemont, IL 60439, USA, abotterud@anl.gov Y1 - 2015/06/01/ PY - 2015 DA - 2015 Jun 01 SP - 1 EP - 9 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 85 IS - 1 SN - 0360-5442, 0360-5442 KW - Environment Abstracts; Sustainability Science Abstracts KW - Solar photovoltaic KW - Renewable energy KW - Operating reserves KW - Unit commitment KW - System operation KW - Integration cost KW - Photovoltaics KW - Nuclear power plants KW - Sensitivity KW - Renewable resources KW - Case studies KW - Sensitivity analysis KW - Fuels KW - Energy KW - Operating costs KW - Power plants KW - USA, Arizona KW - ENA 03:Energy KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732828746?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy&rft.atitle=Integrating+solar+PV+%28photovoltaics%29+in+utility+system+operations%3A+Analytical+framework+and+Arizona+case+study&rft.au=Wu%2C+Jing%3BBotterud%2C+Audun%3BMills%2C+Andrew%3BZhou%2C+Zhi%3BHodge%2C+Bri-Mathias%3BHeaney%2C+Mike&rft.aulast=Wu&rft.aufirst=Jing&rft.date=2015-06-01&rft.volume=85&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Energy&rft.issn=03605442&rft_id=info:doi/10.1016%2Fj.energy.2015.02.043 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 29 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Photovoltaics; Sensitivity; Nuclear power plants; Renewable resources; Case studies; Sensitivity analysis; Energy; Fuels; Operating costs; Power plants; USA, Arizona DO - http://dx.doi.org/10.1016/j.energy.2015.02.043 ER - TY - JOUR T1 - Glutamate Racemase Mutants of Bacillus anthracis AN - 1701481909; PQ0001679667 AB - d-Glutamate is an essential component of bacterial peptidoglycan and a building block of the poly- gamma -d-glutamic acid (PDGA) capsule of Bacillus anthracis, the causative agent of anthrax. Earlier work suggested that two glutamate racemases, encoded by racE1 and racE2, are each essential for growth of B. anthracis, supplying d-glutamic acid for the synthesis of peptidoglycan and PDGA capsule. Earlier work could not explain, however, why two enzymes that catalyze the same reaction may be needed for bacterial growth. Here, we report that deletion of racE1 or racE2 did not prevent growth of B. anthracis Sterne (pXO1+ pXO2-), the noncapsulating vaccine strain, or of B. anthracis Ames (pXO1+ pXO2+), a fully virulent, capsulating isolate. While mutants with deletions in racE1 and racE2 were not viable, racE2 deletion delayed vegetative growth of B. anthracis following spore germination and caused aberrant cell shapes, phenotypes that were partially restored by exogenous d-glutamate. Deletion of racE1 or racE2 from B. anthracis Ames did not affect the production or stereochemical composition of the PDGA capsule. A model is presented whereby B. anthracis, similar to Bacillus subtilis, utilizes two functionally redundant racemase enzymes to synthesize d-glutamic acid for peptidoglycan synthesis. IMPORTANCE Glutamate racemases, enzymes that convert l-glutamate to d-glutamate, are targeted for antibiotic development. Glutamate racemase inhibitors may be useful for the treatment of bacterial infections such as anthrax, where the causative agent, B. anthracis, requires d-glutamate for the synthesis of peptidoglycan and poly- gamma -d-glutamic acid (PDGA) capsule. Here we show that B. anthracis possesses two glutamate racemase genes that can be deleted without abolishing either bacterial growth or PDGA synthesis. These data indicate that drug candidates must inhibit both glutamate racemases, RacE1 and RacE2, in order to block B. anthracis growth and achieve therapeutic efficacy. JF - Journal of Bacteriology AU - Oh, So-Young AU - Richter, Stefan G AU - Missiakas, Dominique M AU - Schneewind, Olaf AD - Howard Taylor Ricketts Laboratory, Argonne National Laboratory, Lemont, Illinois, USA, oschnee@bsd.uchicago.edu. Y1 - 2015/06// PY - 2015 DA - June 2015 SP - 1854 EP - 1861 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 United States VL - 197 IS - 11 SN - 0021-9193, 0021-9193 KW - Microbiology Abstracts B: Bacteriology KW - Bacillus subtilis KW - Data processing KW - Glutamate racemase KW - Spore germination KW - Enzymes KW - peptidoglycans KW - Antibiotics KW - Drug development KW - Bacillus anthracis KW - Infection KW - Cell size KW - D-Glutamic acid KW - Anthrax KW - Vaccines KW - Glutamic acid KW - J 02320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701481909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Bacteriology&rft.atitle=Glutamate+Racemase+Mutants+of+Bacillus+anthracis&rft.au=Oh%2C+So-Young%3BRichter%2C+Stefan+G%3BMissiakas%2C+Dominique+M%3BSchneewind%2C+Olaf&rft.aulast=Oh&rft.aufirst=So-Young&rft.date=2015-06-01&rft.volume=197&rft.issue=11&rft.spage=1854&rft.isbn=&rft.btitle=&rft.title=Journal+of+Bacteriology&rft.issn=00219193&rft_id=info:doi/10.1128%2FJB.00070-15 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 56 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Data processing; Glutamate racemase; Spore germination; peptidoglycans; Enzymes; Drug development; Antibiotics; Infection; Cell size; Anthrax; D-Glutamic acid; Glutamic acid; Vaccines; Bacillus subtilis; Bacillus anthracis DO - http://dx.doi.org/10.1128/JB.00070-15 ER - TY - JOUR T1 - Biomass Storage Options Influence Net Energy and Emissions of Cellulosic Ethanol AN - 1700990753; PQ0001590368 AB - Incremental biomass losses during the harvest and storage of energy crops decrease the effective crop yield at the biorefinery gate. These losses can affect the environmental performance of biofuels from cellulosic feedstocks by indirectly increasing agricultural inputs per unit of fuel and increasing direct emissions of pollutants during biomass decomposition in storage. In this study, we expand the Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET super(TM)) model to include parameters for harvest and storage of dry bales, bale silage, and bulk silage and examine the potential impact of the biomass supply chain on energy use and air pollutants from cellulosic ethanol from corn stover, switchgrass, and miscanthus feedstocks. A review of storage methods shows substantial differences in expected losses (4.2 to 16.0 %) and variability. Model results indicate that inclusion of feedstock harvest and storage pathways increases net fossil energy consumption (0.03-0.14 MJ/MJ) and greenhouse gas emissions (2.3-10 g CO sub(2)e/MJ) from cellulosic ethanol compared to analyses that exclude feedstock losses, depending on the storage scenario selected. Greenhouse gas emissions were highest from bulk ensiled silage and bale silage pathways, driven by direct emissions of greenhouse gasses during storage and material use, respectively. Storage of dry bales indoors or under cover minimizes emissions. This report emphasizes the need to increase the detail of biofuel production models and address areas of great uncertainty in the biomass supply chain, such as biomass decomposition emissions and dry matter losses. JF - BioEnergy Research AU - Emery, Isaac AU - Dunn, Jennifer B AU - Han, Jeongwoo AU - Wang, Michael AD - Department of Agricultural and Biological Engineering, Purdue University, 225 South University Street, West Lafayette, IN, 47907, USA Y1 - 2015/06// PY - 2015 DA - Jun 2015 SP - 590 EP - 604 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 8 IS - 2 SN - 1939-1234, 1939-1234 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA) KW - Silage KW - Air pollution KW - Ethyl alcohol KW - Bales KW - Greenhouse effect KW - Greenhouse gases KW - Feedstock KW - Biomass KW - Ethanol UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700990753?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=BioEnergy+Research&rft.atitle=Biomass+Storage+Options+Influence+Net+Energy+and+Emissions+of+Cellulosic+Ethanol&rft.au=Emery%2C+Isaac%3BDunn%2C+Jennifer+B%3BHan%2C+Jeongwoo%3BWang%2C+Michael&rft.aulast=Emery&rft.aufirst=Isaac&rft.date=2015-06-01&rft.volume=8&rft.issue=2&rft.spage=590&rft.isbn=&rft.btitle=&rft.title=BioEnergy+Research&rft.issn=19391234&rft_id=info:doi/10.1007%2Fs12155-014-9539-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 60 N1 - Last updated - 2015-12-07 DO - http://dx.doi.org/10.1007/s12155-014-9539-0 ER - TY - JOUR T1 - The migration mechanism of transition metal ions in LiNi sub(0.5)Mn sub(1.5)O sub(4) AN - 1700978316; PQ0001649115 AB - The migration of transition metal ions in the oxygen framework was recently proposed to be responsible for the continuous loss of average working potential of high energy density layered-layered composite cathodes for lithium-ion batteries. The potential migration pathway in a model material, LiNi sub(0.5)Mn sub(1.5)O sub(4) spinel, was investigated using in situ high-energy X-ray diffraction and in situ neutron diffraction during the solid state synthesis process. It was found that the migration of transition metal ions among octahedral sites is possible by using tetrahedral vacancies as intermediate sites. It was also suggested that the number of electrons in 3d orbitals has a significant impact on their mobility in the hosting oxygen framework. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Xu, Gui-Liang AU - Qin, Yan AU - Ren, Yang AU - Cai, Lu AU - An, Ke AU - Amine, Khalil AU - Chen, Zonghai AD - Chemical Sciences and Engineering Division; Argonne National Laboratory; 9700 South Cass Avenue; Lemont; IL 60439; USA Y1 - 2015/06// PY - 2015 DA - Jun 2015 SP - 13031 EP - 13038 PB - Royal Society of Chemistry VL - 3 IS - 24 SN - 2050-7488, 2050-7488 KW - Solid State and Superconductivity Abstracts (SO); METADEX (MD); Advanced Polymers Abstracts (EP); Environmental Engineering Abstracts (EN); Composites Industry Abstracts (ED); Engineered Materials Abstracts, Ceramics (EC) KW - X-rays KW - Spinel KW - Transition metals KW - Diffraction KW - Vacancies KW - Lithium batteries KW - Migration KW - Sustainability UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700978316?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=The+migration+mechanism+of+transition+metal+ions+in+LiNi+sub%280.5%29Mn+sub%281.5%29O+sub%284%29&rft.au=Xu%2C+Gui-Liang%3BQin%2C+Yan%3BRen%2C+Yang%3BCai%2C+Lu%3BAn%2C+Ke%3BAmine%2C+Khalil%3BChen%2C+Zonghai&rft.aulast=Xu&rft.aufirst=Gui-Liang&rft.date=2015-06-01&rft.volume=3&rft.issue=24&rft.spage=13031&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta02522b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 54 N1 - Last updated - 2015-12-07 DO - http://dx.doi.org/10.1039/c5ta02522b ER - TY - JOUR T1 - Dynamic near-field optical interaction between oscillating nanomechanical structures. AN - 1683755740; 26014599 AB - Near-field optical techniques exploit light-matter interactions at small length scales for mechanical sensing and actuation of nanomechanical structures. Here, we study the optical interaction between two mechanical oscillators--a plasmonic nanofocusing probe-tip supported by a low frequency cantilever, and a high frequency nanomechanical resonator--and leverage their interaction for local detection of mechanical vibrations. The plasmonic nanofocusing probe provides a confined optical source to enhance the interaction between the two oscillators. Dynamic perturbation of the optical cavity between the probe-tip and the resonator leads to nonlinear modulation of the scattered light intensity at the sum and difference of their frequencies. This double-frequency demodulation scheme is explored to suppress unwanted background and to detect mechanical vibrations with a minimum detectable displacement sensitivity of 0.45 pm/Hz(1/2), which is limited by shot noise and electrical noise. We explore the demodulation scheme for imaging the bending vibration mode shape of the resonator with a lateral spatial resolution of 20 nm. We also demonstrate the time-resolved aspect of the local optical interaction by recording the ring-down vibrations of the resonator at frequencies of up to 129 MHz. The near-field optical technique is promising for studying dynamic mechanical processes in individual nanostructures. JF - Scientific reports AU - Ahn, Phillip AU - Chen, Xiang AU - Zhang, Zhen AU - Ford, Matthew AU - Rosenmann, Daniel AU - Jung, Ii Woong AU - Sun, Cheng AU - Balogun, Oluwaseyi AD - Mechanical Engineering Department, Northwestern University, Evanston, IL 60208. ; Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439-4806. ; 1] Mechanical Engineering Department, Northwestern University, Evanston, IL 60208 [2] Civil and Environmental Engineering Department, Northwestern University, Evanston, IL 60208. Y1 - 2015/05/27/ PY - 2015 DA - 2015 May 27 SP - 10058 VL - 5 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1683755740?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+reports&rft.atitle=Dynamic+near-field+optical+interaction+between+oscillating+nanomechanical+structures.&rft.au=Ahn%2C+Phillip%3BChen%2C+Xiang%3BZhang%2C+Zhen%3BFord%2C+Matthew%3BRosenmann%2C+Daniel%3BJung%2C+Ii+Woong%3BSun%2C+Cheng%3BBalogun%2C+Oluwaseyi&rft.aulast=Ahn&rft.aufirst=Phillip&rft.date=2015-05-27&rft.volume=5&rft.issue=&rft.spage=10058&rft.isbn=&rft.btitle=&rft.title=Scientific+reports&rft.issn=2045-2322&rft_id=info:doi/10.1038%2Fsrep10058 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-11-09 N1 - Date created - 2015-05-27 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Small. 2005 Aug;1(8-9):786-97 [17193524] Nat Nanotechnol. 2007 Feb;2(2):114-20 [18654230] Nano Lett. 2010 May 12;10(5):1853-8 [20411965] Nano Lett. 2012 Feb 8;12(2):534-9 [22263699] Nano Lett. 2012 Feb 8;12(2):1092-5 [22268768] Chem Soc Rev. 2013 Feb 7;42(3):1287-311 [23152052] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/srep10058 ER - TY - JOUR T1 - Can Mn-S redox cycling drive sedimentary dolomite formation? A hypothesis AN - 1700097065; 2015-071586 AB - The formation of dolomite in modern peritidal environments is linked to the degradation of buried microbial mats, with complexation of Ca and Mg by extracellular polymeric substances (EPSs) and alkalinity generation through organic carbon respiration facilitating the nucleation of dolomite precursors. In the past two decades, microbial sulfate reduction, methanogenesis, and methanotrophy have all been considered as potential drivers of the nucleation process, but it remains unclear why dolomite formation could not also occur in suboxic sediments where abundant alkalinity is produced by processes linked to Mn(IV) and/or Fe(III) reduction coupled with the diffusion and reoxidation of reduced sulfur species. Here we report the interstitial occurrence of spheroidal aggregates of nanometer-scale Ca-rich dolomite rhombohedra within suboxic sediments associated with remnant microbial mats that developed in the peritidal zone of the Archipelago Los Roques, Venezuela. Multiple analytical tools, including EPMA, ICP-MS, synchrotron-based XRF and XRD, and spatially resolved XANES microanalyses, show that the dolomite-cemented interval exhibits depleted bulk iron concentrations, but is interstitially enriched in Mn and elemental sulfur (S (super 0) ). Manganese occurs in several oxidation states, indicating that the dolomite-cemented interval was the locus of complex biological redox transformations characterized by coupled Mn and S cycling. The tight correspondence between sedimentary Mn and MgCO (sub 3) concentrations further hints at a direct role for Mn during dolomitization. While additional studies are required to confirm its relevance in natural settings, we propose a model by which coupled Mn-S redox cycling may promote alkalinity generation and thus dolomite formation in manner similar to, or even more efficiently, than bacterial sulfate reduction alone. Abstract Copyright (2015) Elsevier, B.V. JF - Chemical Geology AU - Petrash, Daniel A AU - Lalonde, Stefan V AU - Gonzalez Arismendi, Gabriela AU - Gordon, Robert A AU - Mendez, Jose A AU - Gingras, Murray K AU - Konhauser, Kurt O Y1 - 2015/05/26/ PY - 2015 DA - 2015 May 26 SP - 27 EP - 40 PB - Elsevier, Amsterdam VL - 404 SN - 0009-2541, 0009-2541 KW - X-ray diffraction data KW - mass spectra KW - synsedimentary processes KW - burial diagenesis KW - electron probe data KW - XANES spectra KW - shallow depth KW - sedimentary rocks KW - reduction KW - sedimentary structures KW - pH KW - shore features KW - biochemistry KW - electron microscopy data KW - alkanes KW - X-ray spectra KW - TEM data KW - EDS spectra KW - organic compounds KW - deposition KW - diagenesis KW - Venezuela KW - hydrocarbons KW - crystal chemistry KW - carbonate rocks KW - carbonates KW - SEM data KW - aliphatic hydrocarbons KW - microbial mats KW - ecosystems KW - dolostone KW - manganese KW - dolomite KW - X-ray fluorescence spectra KW - spectra KW - Eh KW - methane KW - recycling KW - biogenic structures KW - carbonatization KW - sedimentation KW - intertidal sedimentation KW - ICP mass spectra KW - South America KW - biogenic processes KW - precipitation KW - metals KW - Los Roques Islands KW - sulfur KW - lagoons KW - dolomitization KW - 06A:Sedimentary petrology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700097065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemical+Geology&rft.atitle=Can+Mn-S+redox+cycling+drive+sedimentary+dolomite+formation%3F+A+hypothesis&rft.au=Petrash%2C+Daniel+A%3BLalonde%2C+Stefan+V%3BGonzalez+Arismendi%2C+Gabriela%3BGordon%2C+Robert+A%3BMendez%2C+Jose+A%3BGingras%2C+Murray+K%3BKonhauser%2C+Kurt+O&rft.aulast=Petrash&rft.aufirst=Daniel&rft.date=2015-05-26&rft.volume=404&rft.issue=&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=Chemical+Geology&rft.issn=00092541&rft_id=info:doi/10.1016%2Fj.chemgeo.2015.03.017 L2 - http://www.sciencedirect.com/science/journal/00092541 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 93 N1 - Document feature - illus. incl. 3 tables, sketch map N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-30 N1 - CODEN - CHGEAD N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; alkanes; biochemistry; biogenic processes; biogenic structures; burial diagenesis; carbonate rocks; carbonates; carbonatization; crystal chemistry; deposition; diagenesis; dolomite; dolomitization; dolostone; ecosystems; EDS spectra; Eh; electron microscopy data; electron probe data; hydrocarbons; ICP mass spectra; intertidal sedimentation; lagoons; Los Roques Islands; manganese; mass spectra; metals; methane; microbial mats; organic compounds; pH; precipitation; recycling; reduction; sedimentary rocks; sedimentary structures; sedimentation; SEM data; shallow depth; shore features; South America; spectra; sulfur; synsedimentary processes; TEM data; Venezuela; X-ray diffraction data; X-ray fluorescence spectra; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.chemgeo.2015.03.017 ER - TY - JOUR T1 - Elucidation of peptide-directed palladium surface structure for biologically tunable nanocatalysts. AN - 1683576751; 25905675 AB - Peptide-enabled synthesis of inorganic nanostructures represents an avenue to access catalytic materials with tunable and optimized properties. This is achieved via peptide complexity and programmability that is missing in traditional ligands for catalytic nanomaterials. Unfortunately, there is limited information available to correlate peptide sequence to particle structure and catalytic activity to date. As such, the application of peptide-enabled nanocatalysts remains limited to trial and error approaches. In this paper, a hybrid experimental and computational approach is introduced to systematically elucidate biomolecule-dependent structure/function relationships for peptide-capped Pd nanocatalysts. Synchrotron X-ray techniques were used to uncover substantial particle surface structural disorder, which was dependent upon the amino acid sequence of the peptide capping ligand. Nanocatalyst configurations were then determined directly from experimental data using reverse Monte Carlo methods and further refined using molecular dynamics simulation, obtaining thermodynamically stable peptide-Pd nanoparticle configurations. Sequence-dependent catalytic property differences for C-C coupling and olefin hydrogenation were then elucidated by identification of the catalytic active sites at the atomic level and quantitative prediction of relative reaction rates. This hybrid methodology provides a clear route to determine peptide-dependent structure/function relationships, enabling the generation of guidelines for catalyst design through rational tailoring of peptide sequences. JF - ACS nano AU - Bedford, Nicholas M AU - Ramezani-Dakhel, Hadi AU - Slocik, Joseph M AU - Briggs, Beverly D AU - Ren, Yang AU - Frenkel, Anatoly I AU - Petkov, Valeri AU - Heinz, Hendrik AU - Naik, Rajesh R AU - Knecht, Marc R AD - †Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States. ; §Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States. ; ‡Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States. ; ⊥X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States. ; ∥Department of Physics, Yeshiva University, New York, New York 10016, United States. ; #Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48858, United States. Y1 - 2015/05/26/ PY - 2015 DA - 2015 May 26 SP - 5082 EP - 5092 VL - 9 IS - 5 KW - Alkenes KW - 0 KW - Oligopeptides KW - Palladium KW - 5TWQ1V240M KW - Index Medicus KW - molecular dynamics simulations KW - catalysis KW - biotemplating KW - peptides KW - atomic pair distribution function KW - Alkenes -- chemistry KW - Biomimetic Materials -- chemistry KW - Amino Acid Sequence KW - Molecular Dynamics Simulation KW - Hydrogenation KW - Surface Properties KW - Protein Conformation KW - Catalysis KW - Palladium -- chemistry KW - Metal Nanoparticles -- chemistry KW - Oligopeptides -- chemistry KW - Nanotechnology -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1683576751?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ACS+nano&rft.atitle=Elucidation+of+peptide-directed+palladium+surface+structure+for+biologically+tunable+nanocatalysts.&rft.au=Bedford%2C+Nicholas+M%3BRamezani-Dakhel%2C+Hadi%3BSlocik%2C+Joseph+M%3BBriggs%2C+Beverly+D%3BRen%2C+Yang%3BFrenkel%2C+Anatoly+I%3BPetkov%2C+Valeri%3BHeinz%2C+Hendrik%3BNaik%2C+Rajesh+R%3BKnecht%2C+Marc+R&rft.aulast=Bedford&rft.aufirst=Nicholas&rft.date=2015-05-26&rft.volume=9&rft.issue=5&rft.spage=5082&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Facsnano.5b00168 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-04-05 N1 - Date created - 2015-05-26 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acsnano.5b00168 ER - TY - CPAPER T1 - Understanding the Concepts of Uncertainty, Reproducibility, and Repeatability and the Application to Acoustic Testing T2 - 169th Meeting of the Acoustical Society of America AN - 1669822032; 6341407 JF - 169th Meeting of the Acoustical Society of America AU - Muehleisen, Ralph Y1 - 2015/05/18/ PY - 2015 DA - 2015 May 18 KW - Acoustics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1669822032?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=169th+Meeting+of+the+Acoustical+Society+of+America&rft.atitle=Understanding+the+Concepts+of+Uncertainty%2C+Reproducibility%2C+and+Repeatability+and+the+Application+to+Acoustic+Testing&rft.au=Muehleisen%2C+Ralph&rft.aulast=Muehleisen&rft.aufirst=Ralph&rft.date=2015-05-18&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=169th+Meeting+of+the+Acoustical+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://asa2015spring.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-31 N1 - Last updated - 2015-04-06 ER - TY - CPAPER T1 - Publish or Perish and Funding or Failure - the Dark Side of a Career in Academia T2 - 169th Meeting of the Acoustical Society of America AN - 1669821878; 6341701 JF - 169th Meeting of the Acoustical Society of America AU - Muehleisen, Ralph Y1 - 2015/05/18/ PY - 2015 DA - 2015 May 18 KW - Financing KW - Careers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1669821878?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=169th+Meeting+of+the+Acoustical+Society+of+America&rft.atitle=Publish+or+Perish+and+Funding+or+Failure+-+the+Dark+Side+of+a+Career+in+Academia&rft.au=Muehleisen%2C+Ralph&rft.aulast=Muehleisen&rft.aufirst=Ralph&rft.date=2015-05-18&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=169th+Meeting+of+the+Acoustical+Society+of+America&rft.issn=&rft_id=info:doi/ L2 - https://asa2015spring.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-31 N1 - Last updated - 2015-04-06 ER - TY - JOUR T1 - Action at a distance: mutations of peripheral residues transform rapid reversible inhibitors to slow, tight binders of cyclooxygenase-2. AN - 1681911743; 25825493 AB - Cyclooxygenase enzymes (COX-1 and COX-2) catalyze the conversion of arachidonic acid to prostaglandin G2. The inhibitory activity of rapid, reversible COX inhibitors (ibuprofen, naproxen, mefenamic acid, and lumiracoxib) demonstrated a significant increase in potency and time dependence of inhibition against double tryptophan murine COX-2 mutants at the 89/90 and 89/119 positions. In contrast, the slow, time-dependent COX inhibitors (diclofenac, indomethacin, and flurbiprofen) were unaffected by those mutations. Further mutagenesis studies suggested that mutation at position 89 was principally responsible for the changes in inhibitory potency of rapid, reversible inhibitors, whereas mutation at position 90 may exert some effect on the potency of COX-2-selective diarylheterocycle inhibitors; no effect was observed with mutation at position 119. Several crystal structures with or without NSAIDs indicated that placement of a bulky residue at position 89 caused a closure of a gap at the lobby, and alteration of histidine to tryptophan at position 90 changed the electrostatic profile of the side pocket of COX-2. Thus, these two residues, especially Val-89 at the lobby region, are crucial for the entrance and exit of some NSAIDs from the COX active site. JF - The Journal of biological chemistry AU - Blobaum, Anna L AU - Xu, Shu AU - Rowlinson, Scott W AU - Duggan, Kelsey C AU - Banerjee, Surajit AU - Kudalkar, Shalley N AU - Birmingham, William R AU - Ghebreselasie, Kebreab AU - Marnett, Lawrence J AD - From the A. B. Hancock, Jr. Memorial Laboratory for Cancer Research, Departments of Biochemistry, Chemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, Center in Molecular Toxicology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville Tennessee 37232. ; Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, and Northeastern Collaborative Access Team, Argonne National Laboratory, Argonne, Illinois 60439. ; From the A. B. Hancock, Jr. Memorial Laboratory for Cancer Research, Departments of Biochemistry, Chemistry, and Pharmacology, Vanderbilt Institute of Chemical Biology, Center in Molecular Toxicology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville Tennessee 37232, larry.marnett@vanderbilt.edu. Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 12793 EP - 12803 VL - 290 IS - 20 KW - Cyclooxygenase 2 Inhibitors KW - 0 KW - Ptgs2 protein, mouse KW - EC 1.14.99.- KW - Cyclooxygenase 2 KW - EC 1.14.99.1 KW - Index Medicus KW - enzyme kinetics KW - NSAIDs KW - protein drug interaction KW - drug action KW - prostaglandin KW - cyclooxygenase (COX) KW - enzyme inhibitor KW - Static Electricity KW - Animals KW - Catalytic Domain KW - Mice KW - Crystallography, X-Ray KW - Protein Binding KW - Cyclooxygenase 2 -- chemistry KW - Cyclooxygenase 2 -- genetics KW - Cyclooxygenase 2 Inhibitors -- chemistry KW - Cyclooxygenase 2 -- metabolism KW - Mutation, Missense UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1681911743?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+biological+chemistry&rft.atitle=Action+at+a+distance%3A+mutations+of+peripheral+residues+transform+rapid+reversible+inhibitors+to+slow%2C+tight+binders+of+cyclooxygenase-2.&rft.au=Blobaum%2C+Anna+L%3BXu%2C+Shu%3BRowlinson%2C+Scott+W%3BDuggan%2C+Kelsey+C%3BBanerjee%2C+Surajit%3BKudalkar%2C+Shalley+N%3BBirmingham%2C+William+R%3BGhebreselasie%2C+Kebreab%3BMarnett%2C+Lawrence+J&rft.aulast=Blobaum&rft.aufirst=Anna&rft.date=2015-05-15&rft.volume=290&rft.issue=20&rft.spage=12793&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+biological+chemistry&rft.issn=1083-351X&rft_id=info:doi/10.1074%2Fjbc.M114.635987 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-07-29 N1 - Date created - 2015-05-18 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 3NT1; PDB; 4OTY N1 - SuppNotes - Cited By: Nature. 2000 May 4;405(6782):97-101 [10811226] Acta Crystallogr D Biol Crystallogr. 2007 Jan;63(Pt 1):32-41 [17164524] Biochemistry. 2001 May 1;40(17):5172-80 [11318639] Biochem J. 2001 Aug 1;357(Pt 3):709-18 [11463341] J Biol Chem. 2003 Nov 14;278(46):45763-9 [12925531] Pharmacol Rev. 2004 Sep;56(3):387-437 [15317910] Nat New Biol. 1971 Jun 23;231(25):235-7 [5284361] Nat New Biol. 1971 Jun 23;231(25):237-9 [5284362] Proc Natl Acad Sci U S A. 1975 Dec;72(12):4863-5 [1061075] Nature. 1994 Jan 20;367(6460):243-9 [8121489] Acta Crystallogr D Biol Crystallogr. 2008 Jan;64(Pt 1):61-9 [18094468] BMC Struct Biol. 2008;8:49 [19014592] J Biol Chem. 2009 Apr 10;284(15):10046-55 [19218248] Biochemistry. 2009 Aug 11;48(31):7353-5 [19603831] Proc Natl Acad Sci U S A. 2010 Jan 5;107(1):28-33 [19955429] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):125-32 [20124692] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] Acta Crystallogr D Biol Crystallogr. 2010 Apr;66(Pt 4):486-501 [20383002] Biochemistry. 2010 Aug 24;49(33):7069-79 [20669977] Bioorg Med Chem Lett. 2013 Nov 1;23(21):5860-4 [24060487] J Biol Chem. 2013 Oct 4;288(40):28641-55 [23955344] J Biol Chem. 2014 Mar 7;289(10):6799-808 [24425867] Proc Natl Acad Sci U S A. 2000 Jan 18;97(2):925-30 [10639181] Proc Natl Acad Sci U S A. 1994 Nov 8;91(23):11202-6 [7972034] Proc Natl Acad Sci U S A. 2006 Apr 18;103(16):6142-7 [16606823] Biochemistry. 2000 May 23;39(20):6228-34 [10821698] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1074/jbc.M114.635987 ER - TY - JOUR T1 - Genomic and experimental evidence for multiple metabolic functions in the RidA/YjgF/YER057c/UK114 (Rid) protein family. AN - 1681261176; 25975565 AB - BACKGROUNDIt is now recognized that enzymatic or chemical side-reactions can convert normal metabolites to useless or toxic ones and that a suite of enzymes exists to mitigate such metabolite damage. Examples are the reactive imine/enamine intermediates produced by threonine dehydratase, which damage the pyridoxal 5'-phosphate cofactor of various enzymes causing inactivation. This damage is pre-empted by RidA proteins, which hydrolyze the imines before they do harm. RidA proteins belong to the YjgF/YER057c/UK114 family (here renamed the Rid family). Most other members of this diverse and ubiquitous family lack defined functions.RESULTSPhylogenetic analysis divided the Rid family into a widely distributed, apparently archetypal RidA subfamily and seven other subfamilies (Rid1 to Rid7) that are largely confined to bacteria and often co-occur in the same organism with RidA and each other. The Rid1 to Rid3 subfamilies, but not the Rid4 to Rid7 subfamilies, have a conserved arginine residue that, in RidA proteins, is essential for imine-hydrolyzing activity. Analysis of the chromosomal context of bacterial RidA genes revealed clustering with genes for threonine dehydratase and other pyridoxal 5'-phosphate-dependent enzymes, which fits with the known RidA imine hydrolase activity. Clustering was also evident between Rid family genes and genes specifying FAD-dependent amine oxidases or enzymes of carbamoyl phosphate metabolism. Biochemical assays showed that Salmonella enterica RidA and Rid2, but not Rid7, can hydrolyze imines generated by amino acid oxidase. Genetic tests indicated that carbamoyl phosphate overproduction is toxic to S. enterica cells lacking RidA, and metabolomic profiling of Rid knockout strains showed ten-fold accumulation of the carbamoyl phosphate-related metabolite dihydroorotate.CONCLUSIONSLike the archetypal RidA subfamily, the Rid2, and probably the Rid1 and Rid3 subfamilies, have imine-hydrolyzing activity and can pre-empt damage from imines formed by amine oxidases as well as by pyridoxal 5'-phosphate enzymes. The RidA subfamily has an additional damage pre-emption role in carbamoyl phosphate metabolism that has yet to be biochemically defined. Finally, the Rid4 to Rid7 subfamilies appear not to hydrolyze imines and thus remain mysterious. JF - BMC genomics AU - Niehaus, Thomas D AU - Gerdes, Svetlana AU - Hodge-Hanson, Kelsey AU - Zhukov, Aleksey AU - Cooper, Arthur J L AU - ElBadawi-Sidhu, Mona AU - Fiehn, Oliver AU - Downs, Diana M AU - Hanson, Andrew D AD - Horticultural Sciences Department, University of Florida, Gainesville, FL, 32611, USA. tomniehaus@ufl.edu. ; Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA. sveta@thefig.info. ; Department of Microbiology, University of Georgia, Athens, GA, 30602, USA. khodge@uga.edu. ; Microbiology and Cell Science Department, University of Florida, Gainesville, FL, 32611, USA. alekseyig@hotmail.com. ; Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY, 10595, USA. arthur_cooper@nymc.edu. ; Metabolomics Core, UC Davis Genome Center, University of California Davis, Davis, CA, 95616, USA. mmelbadawi@ucdavis.edu. ; Metabolomics Core, UC Davis Genome Center, University of California Davis, Davis, CA, 95616, USA. ofiehn@ucdavis.edu. ; Department of Microbiology, University of Georgia, Athens, GA, 30602, USA. dmdowns@uga.edu. ; Horticultural Sciences Department, University of Florida, Gainesville, FL, 32611, USA. adha@ufl.edu. Y1 - 2015/05/15/ PY - 2015 DA - 2015 May 15 SP - 382 VL - 16 KW - Bacterial Proteins KW - 0 KW - Imines KW - Mitochondrial Proteins KW - YjgF protein, Bacteria KW - Carbamyl Phosphate KW - 590-55-6 KW - Oxidoreductases KW - EC 1.- KW - Index Medicus KW - Phylogeny KW - Models, Molecular KW - Salmonella enterica -- genetics KW - Amino Acid Sequence KW - Terminology as Topic KW - Salmonella enterica -- classification KW - Hydrolysis KW - Metabolomics KW - Carbamyl Phosphate -- metabolism KW - Oxidoreductases -- metabolism KW - Molecular Sequence Data KW - Salmonella enterica -- metabolism KW - Imines -- metabolism KW - Protein Conformation KW - Bacterial Proteins -- genetics KW - Bacterial Proteins -- chemistry KW - Bacterial Proteins -- metabolism KW - Mitochondrial Proteins -- genetics KW - Mitochondrial Proteins -- metabolism KW - Mitochondrial Proteins -- chemistry KW - Genomics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1681261176?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=BMC+genomics&rft.atitle=Genomic+and+experimental+evidence+for+multiple+metabolic+functions+in+the+RidA%2FYjgF%2FYER057c%2FUK114+%28Rid%29+protein+family.&rft.au=Niehaus%2C+Thomas+D%3BGerdes%2C+Svetlana%3BHodge-Hanson%2C+Kelsey%3BZhukov%2C+Aleksey%3BCooper%2C+Arthur+J+L%3BElBadawi-Sidhu%2C+Mona%3BFiehn%2C+Oliver%3BDowns%2C+Diana+M%3BHanson%2C+Andrew+D&rft.aulast=Niehaus&rft.aufirst=Thomas&rft.date=2015-05-15&rft.volume=16&rft.issue=&rft.spage=382&rft.isbn=&rft.btitle=&rft.title=BMC+genomics&rft.issn=1471-2164&rft_id=info:doi/10.1186%2Fs12864-015-1584-3 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-01-15 N1 - Date created - 2015-05-15 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Eur J Biochem. 1973 Nov 1;39(1):301-4 [4770799] Biochemistry. 1979 Feb 6;18(3):411-7 [33698] J Bacteriol. 1984 May;158(2):488-95 [6327606] Nucleic Acids Res. 1990 Oct 25;18(20):6097-100 [2172928] Biochim Biophys Acta. 1991 Apr 8;1077(2):233-40 [2015295] Biokhimiia. 1996 Nov;61(11):2018-39 [9004862] Bioessays. 1998 Feb;20(2):181-6 [9631663] Curr Opin Chem Biol. 1998 Oct;2(5):624-32 [9818189] J Bacteriol. 1999 Jun;181(12):3810-5 [10368157] J Biol Chem. 1999 Jul 16;274(29):20688-92 [10400702] Cell Mol Life Sci. 2004 Nov;61(22):2886-92 [15558217] Nucleic Acids Res. 2005;33(17):5691-702 [16214803] Philos Trans R Soc Lond B Biol Sci. 2005 Oct 29;360(1462):1935-43 [16214751] J Bacteriol. 2005 Nov;187(22):7866-9 [16267312] Mol Microbiol. 2006 Jan;59(1):5-19 [16359314] Science. 2006 Mar 3;311(5765):1283-7 [16513982] DNA Res. 2005;12(5):291-9 [16769691] Bioinformatics. 2007 Jan 1;23(1):127-8 [17050570] BMC Struct Biol. 2007;7:30 [17506874] Proc Natl Acad Sci U S A. 2008 Nov 4;105(44):16918-23 [18971327] Biochem J. 2010 Jan 1;425(1):1-11 [20001958] Anal Chem. 2010 Aug 1;82(15):6660-6 [20669998] Nat Chem Biol. 2010 Oct;6(10):692-6 [20852602] J Bacteriol. 2011 Mar;193(5):1086-9 [21183666] Bioconjug Chem. 2003 Nov-Dec;14(6):1243-52 [14624641] Proteins. 2004 Mar 1;54(4):797-800 [14997576] J Biochem. 2000 Apr;127(4):559-67 [10739946] Proc Natl Acad Sci U S A. 2000 Jun 6;97(12):6640-5 [10829079] Mol Cell Biol. 2000 Oct;20(20):7784-97 [11003673] Arch Microbiol. 2000 Oct;174(4):265-72 [11081795] Genes Cells. 2001 Jun;6(6):507-17 [11442631] J Biol Chem. 2003 Jan 3;278(1):357-65 [12386155] Genome Biol. 2004;5(4):R27 [15059260] Genome Res. 2004 Jun;14(6):1188-90 [15173120] Biochem J. 2004 Oct 1;383(Pt 1):165-70 [15250825] Proc Natl Acad Sci U S A. 1971 May;68(5):987-91 [4396920] Biochem Biophys Res Commun. 1972 Jan 31;46(2):571-7 [4400441] Proc Natl Acad Sci U S A. 1972 May;69(5):1086-90 [4556453] Biochem Biophys Res Commun. 1972 Oct 6;49(1):257-63 [4404017] Mol Gen Genet. 1972;119(1):75-88 [4564719] PLoS One. 2011;6(4):e19259 [21541350] Nucleic Acids Res. 2011 Jul;39(Web Server issue):W475-8 [21470960] J Biol Chem. 2012 Jan 27;287(5):3454-61 [22094463] Acta Crystallogr Sect F Struct Biol Cryst Commun. 2012 Nov 1;68(Pt 11):1294-9 [23143235] J Chromatogr A. 2012 Jun 29;1244:139-47 [22608776] PLoS One. 2012;7(5):e36267 [22574144] Nucleic Acids Res. 2013 Jan;41(Database issue):D348-52 [23197659] Mol Microbiol. 2013 Jan;87(1):80-93 [23113660] Nat Chem Biol. 2013 Feb;9(2):72-80 [23334546] MBio. 2013;4(1):e00033-13 [23386433] J Bacteriol. 2013 Aug;195(16):3603-9 [23749972] Nature. 2013 Aug 8;500(7461):237-41 [23903661] Mol Microbiol. 2013 Aug;89(4):751-9 [23815688] Plant Cell. 2014 Jul;26(7):3010-22 [25070638] Biochemistry. 2003 Jan 14;42(1):80-9 [12515541] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1186/s12864-015-1584-3 ER - TY - JOUR T1 - Pyritized in situ trilobite eggs from the Ordovician of New York (Lorraine Group); implications for trilobite reproductive biology AN - 1729845194; 2015-107130 AB - Despite a plethora of exceptionally preserved trilobites, trilobite reproduction has remained a mystery. No trilobite has preserved unambiguous eggs or genitalia. This study reports on the first occurrence of preserved, in situ trilobite eggs from Triarthrus eatoni from the Lorraine Group in upstate New York. Like other exceptionally preserved trilobites from the Lorraine Group, the trilobites are replaced with pyrite on their exoskeletons and ventral appendages. The eggs (presumably representing unfertilized eggs) are spherical to elliptical in shape, about 50 mu m in size, and are clustered in the genal area of the cephalon near the lateral border. The eggs are only visible ventrally with no dorsal brood pouch or recognized sexual dimorphism. This location is consistent with how modern horseshoe crabs carry their unfertilized eggs. Trilobites likely released their gametes (eggs and sperm) through a genital pore of as-yet unknown location (likely near the posterior boundary of the head). If T. eatoni's reproductive biology is representative of other trilobites, they spawned rather than mated and exhibited r-strategy reproduction. A more detailed view of the anatomy associated with the eggs in currently in progress with synchrotron x-ray tomography. JF - Abstracts with Programs - Geological Society of America AU - Hegna, Thomas AU - Martin, Markus AU - Soriano, Carmen AU - Anonymous Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 36 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 5 SN - 0016-7592, 0016-7592 KW - 10:Invertebrate paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729845194?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Pyritized+in+situ+trilobite+eggs+from+the+Ordovician+of+New+York+%28Lorraine+Group%29%3B+implications+for+trilobite+reproductive+biology&rft.au=Hegna%2C+Thomas%3BMartin%2C+Markus%3BSoriano%2C+Carmen%3BAnonymous&rft.aulast=Hegna&rft.aufirst=Thomas&rft.date=2015-05-01&rft.volume=47&rft.issue=5&rft.spage=36&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, North-Central Section, 49th annual meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2015-11-05 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - High-Speed Fabrication of Lithium-Ion Battery Electrodes by UV-Curing AN - 1701000825; PQ0001591054 AB - In this study, UV-curing was investigated as an alternative method to provide fast production of composite cathodes and significantly reduce the time and energy required for solvent removal in lithium-ion battery fabrication. To serve our purpose, low-molecular-weight polysiloxane acrylate (PSA) was designed and synthesized from a polysiloxane epoxide precursor. In the presence of the acrylic acid additive LiNi sub(1/3)Mn sub(1/3)Co sub(1/3)O sub(2) (NMC), electrode laminates containing 10wt% PSA binder were successfully fabricated by UV-curing. The cured electrode exhibited good mechanical and electrochemical properties. At current rates up to C/3, the cell performance of the UV-cured NMC electrode was comparable to that of conventional polyvinylidene fluoride (PVDF)-bound NMC electrode. Our initial success in applying high-speed UV-curing in composite electrode fabrication has proved that it is a promising route to substantially reducing the capital and operation costs of lithium-ion battery electrode manufacturing and additionally bringing about important environmental benefits. A high-speed UV-curing process to fabricate composite cathode laminates for lithium-ion batteries is presented. A UV-curable, multifunctional polysiloxane acrylate (PSA) is synthesized and demonstrated to be suitable as binder precursor for fabrication of LiNi sub(1/3)Mn sub(1/3)Co sub(1/3)O sub(2) (NMC) cathodes. In the presence of 10wt% PSA binder, mechanically robust NMC electrode laminates fabricated by UV-curing exhibit good electrochemical performance in cell testing. JF - Energy Technology AU - Xue, Zheng AU - Hu, Libo AU - Amine, Khalil AU - Zhang, Zhengcheng AD - Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 (USA). Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 469 EP - 475 PB - Wiley Subscription Services, Inc., 1105 N Market St Wilmington DE 19801 Germany VL - 3 IS - 5 SN - 2194-4288, 2194-4288 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Cathodes KW - Polysiloxanes KW - Laminates KW - Precursors KW - Electrodes KW - High speed KW - Lithium batteries KW - Binders KW - Acrylates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701000825?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+Technology&rft.atitle=High-Speed+Fabrication+of+Lithium-Ion+Battery+Electrodes+by+UV-Curing&rft.au=Xue%2C+Zheng%3BHu%2C+Libo%3BAmine%2C+Khalil%3BZhang%2C+Zhengcheng&rft.aulast=Xue&rft.aufirst=Zheng&rft.date=2015-05-01&rft.volume=3&rft.issue=5&rft.spage=469&rft.isbn=&rft.btitle=&rft.title=Energy+Technology&rft.issn=21944288&rft_id=info:doi/10.1002%2Fente.201402210 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-12-07 DO - http://dx.doi.org/10.1002/ente.201402210 ER - TY - JOUR T1 - Pristine-state structure of lithium-ion-battery cathode material Li sub(1.2)Mn sub(0.4)Co sub(0.4)O sub(2) derived from NMR bond pathway analysis AN - 1697754422; PQ0001592373 AB - Layered lithium ion battery cathode materials have been extensively investigated, of which layered-layered composites xLi sub(2)MnO sub(3).(1 - x)LiMO sub(2) (M = Mn, Co, Ni) are of particular interest, owing to their high energy density. Before the structural transformations that occur in these materials with cycling can be understood, the structure of the pristine material must be established. In this work, NMR spectra are measured for the model layered-layered system xLi sub(2)MnO sub(3).(1 - x)LiCoO sub(2) and Bond-Pathway-model analysis is applied to elucidate the atomic arrangement and domain structure of this material in its pristine state, before electrochemical cycling. The simplest structural element of an Li sub(2)MnO sub(3) domain consists of a stripe of composition LiMn sub(2) parallel to a crystallographic axis in a metal layer of the composite. A simple model of the composite structure may be constructed by a superposition of such stripes in an LiCoO sub(2) background. We show that such a model can account for most of the features of the observed NMR spectra. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Iddir, Hakim AU - Key, Baris AU - Dogan, Fulya AU - Russell, John T AU - Long, Brandon R AU - Bareno, Javier AU - Croy, Jason R AU - Benedek, Roy AD - Materials Science Division; Argonne National Laboratory; Argonne; IL 60439; USA; , iddir@anl.gov Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 11471 EP - 11477 PB - Royal Society of Chemistry VL - 3 IS - 21 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Composite materials KW - Metals KW - Batteries KW - Energy KW - NMR KW - Electrochemistry KW - Lithium KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1697754422?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Pristine-state+structure+of+lithium-ion-battery+cathode+material+Li+sub%281.2%29Mn+sub%280.4%29Co+sub%280.4%29O+sub%282%29+derived+from+NMR+bond+pathway+analysis&rft.au=Iddir%2C+Hakim%3BKey%2C+Baris%3BDogan%2C+Fulya%3BRussell%2C+John+T%3BLong%2C+Brandon+R%3BBareno%2C+Javier%3BCroy%2C+Jason+R%3BBenedek%2C+Roy&rft.aulast=Iddir&rft.aufirst=Hakim&rft.date=2015-05-01&rft.volume=3&rft.issue=21&rft.spage=11471&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta01510c LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Number of references - 17 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Metals; Composite materials; Batteries; Energy; NMR; Electrochemistry; Sustainability; Lithium DO - http://dx.doi.org/10.1039/c5ta01510c ER - TY - JOUR T1 - An organophosphine oxide redox shuttle additive that delivers long-term overcharge protection for 4 V lithium-ion batteries AN - 1687666478; PQ0001569433 AB - Redox shuttle additives are used to protect Li-ion batteries from overcharge. Increased operating voltage requires striking a balance between a high redox potential and electrochemical stability. 1,4-Bis[bis(1-methylethyl)phosphinyl]-2,5-dimethoxybenzene (BPDB) exhibits a redox potential of 4.5 V vs.Li/Li super(+) and provides stable overcharge protection for 4 V cells delivering 95 cycles of 100% overcharge ratio. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Huang, Jinhua AU - Azimi, Nasim AU - Cheng, Lei AU - Shkrob, Ilya A AU - Xue, Zheng AU - Zhang, Junjie AU - Dietz Rago, Nancy L AU - Curtiss, Larry A AU - Amine, Khalil AU - Zhang, Zhengcheng AU - Zhang, Lu AD - Joint Center for Energy Storage Research; Argonne National Laboratory; Lemont; IL 60439; USA, zzhang@anl.gov Y1 - 2015/05// PY - 2015 DA - May 2015 SP - 10710 EP - 10714 PB - Royal Society of Chemistry VL - 3 IS - 20 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Batteries KW - Energy KW - Electrochemistry KW - Additives KW - Sustainability KW - Redox potential KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1687666478?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=An+organophosphine+oxide+redox+shuttle+additive+that+delivers+long-term+overcharge+protection+for+4+V+lithium-ion+batteries&rft.au=Huang%2C+Jinhua%3BAzimi%2C+Nasim%3BCheng%2C+Lei%3BShkrob%2C+Ilya+A%3BXue%2C+Zheng%3BZhang%2C+Junjie%3BDietz+Rago%2C+Nancy+L%3BCurtiss%2C+Larry+A%3BAmine%2C+Khalil%3BZhang%2C+Zhengcheng%3BZhang%2C+Lu&rft.aulast=Huang&rft.aufirst=Jinhua&rft.date=2015-05-01&rft.volume=3&rft.issue=20&rft.spage=10710&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta01326g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-06-01 N1 - Number of references - 32 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Batteries; Energy; Electrochemistry; Additives; Sustainability; Redox potential DO - http://dx.doi.org/10.1039/c5ta01326g ER - TY - JOUR T1 - Effects of cycling temperatures on the voltage fade phenomenon in sub(0.5)Li sub(2)MnO sub(3 ) times 0.5LiNi sub(0.375)Mn sub(0.375)Co sub(0.25)O sub(2) cathodes AN - 1701061014; PQ0001643068 AB - The rate of voltage fade in 0.5Li sub(2)MnO sub(3) times 0.5LiNi sub(0.375)Mn sub(0.375)Co sub(0.25)O sub(2) cathodes was measured in half-cells in a temperature range of 25-55 [degrees]C. On the basis of the dependence of the values of the open-circuit potential with cycle count and temperature, the voltage fade phenomenon seems to consist of two chemical processes: one that can be described using a parabolic rate law and another that uses a linear-with-time law. As the cycling temperature increased, the relative contributions of the two processes changed. On the basis of the overall rate versus temperature data, we believe the two processes may be in competition with one another. JF - Journal of Power Sources AU - Vu, Anh AU - Walker, Lee K AU - Bareno, Javier AU - Burrell, Anthony K AU - Bloom, Ira AD - Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA Y1 - 2015/04/15/ PY - 2015 DA - 2015 Apr 15 SP - 155 EP - 158 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 280 SN - 0378-7753, 0378-7753 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Voltage fade KW - Lithium ion battery KW - Kinetics KW - Cathodes KW - Cycles KW - Voltage KW - Law KW - Electric potential KW - Counting KW - Competition KW - Power sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1701061014?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=Effects+of+cycling+temperatures+on+the+voltage+fade+phenomenon+in+sub%280.5%29Li+sub%282%29MnO+sub%283+%29+times+0.5LiNi+sub%280.375%29Mn+sub%280.375%29Co+sub%280.25%29O+sub%282%29+cathodes&rft.au=Vu%2C+Anh%3BWalker%2C+Lee+K%3BBareno%2C+Javier%3BBurrell%2C+Anthony+K%3BBloom%2C+Ira&rft.aulast=Vu&rft.aufirst=Anh&rft.date=2015-04-15&rft.volume=280&rft.issue=&rft.spage=155&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2015.01.059 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-12-07 DO - http://dx.doi.org/10.1016/j.jpowsour.2015.01.059 ER - TY - JOUR T1 - Tunable core-shell single-walled carbon nanotube-Cu sub(2)S networked nanocomposites as high-performance cathodes for lithium-ion batteries AN - 1697750352; PQ0001643125 AB - In this study, nanoscale copper(I) sulfide (n-Cu sub(2)S) was deposited over networks of single-walled carbon nanotubes (SWCNTs) by atomic layer deposition (ALD). This synthetic route provides a high degree of control for tuning the materials properties. The resulting core-shell SWCNT-n-Cu sub(2)S composite structure ensures an intimate contact between the two components while maintaining a high porosity for efficient transport of charges. Indeed, electrochemical testing demonstrates that these nanocomposites are promising as cathodes in lithium-ion batteries (LIBs), exhibiting excellent stability over 200 discharge -charge cycles with a sustainable, high capacity of 260 mAh g super(-1) (92% of the theoretical value in terms of Cu sub(2)S) and >99% Coulombic efficiency. This work establishes a general strategy for developing high-performance nanoscale electrode materials. JF - Journal of Power Sources AU - Meng, Xiangbo AU - Riha, Shannon C AU - Libera, Joseph A AU - Wu, Qingliu AU - Wang, Hsien-Hau AU - Martinson, Alex BF AU - Elam, Jeffrey W AD - Energy Systems Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA, jelam@anl.gov Y1 - 2015/04/15/ PY - 2015 DA - 2015 Apr 15 SP - 621 EP - 629 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 280 SN - 0378-7753, 0378-7753 KW - Sustainability Science Abstracts KW - Cu2S KW - Cathode KW - Atomic layer deposition KW - Lithium-ion battery KW - Composite materials KW - Batteries KW - Sulfides KW - Electrodes KW - Porosity KW - Electrochemistry KW - Nanotechnology KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1697750352?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=Tunable+core-shell+single-walled+carbon+nanotube-Cu+sub%282%29S+networked+nanocomposites+as+high-performance+cathodes+for+lithium-ion+batteries&rft.au=Meng%2C+Xiangbo%3BRiha%2C+Shannon+C%3BLibera%2C+Joseph+A%3BWu%2C+Qingliu%3BWang%2C+Hsien-Hau%3BMartinson%2C+Alex+BF%3BElam%2C+Jeffrey+W&rft.aulast=Meng&rft.aufirst=Xiangbo&rft.date=2015-04-15&rft.volume=280&rft.issue=&rft.spage=621&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2015.01.151 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Composite materials; Batteries; Porosity; Electrodes; Sulfides; Electrochemistry; Nanotechnology DO - http://dx.doi.org/10.1016/j.jpowsour.2015.01.151 ER - TY - CPAPER T1 - Getting to the science quickly and effectively: An international collaboration in community radar software T2 - 2015 European Geosciences Union General Assembly AN - 1684402611; 6345437 JF - 2015 European Geosciences Union General Assembly AU - Collis, Scott AU - Helmus, Jonathan AU - Heistermann, Maik AU - Michelson, Daniel Y1 - 2015/04/12/ PY - 2015 DA - 2015 Apr 12 KW - Computer programs KW - Radar KW - International agreements UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1684402611?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2015+European+Geosciences+Union+General+Assembly&rft.atitle=Getting+to+the+science+quickly+and+effectively%3A+An+international+collaboration+in+community+radar+software&rft.au=Collis%2C+Scott%3BHelmus%2C+Jonathan%3BHeistermann%2C+Maik%3BMichelson%2C+Daniel&rft.aulast=Collis&rft.aufirst=Scott&rft.date=2015-04-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2015+European+Geosciences+Union+General+Assembly&rft.issn=&rft_id=info:doi/ L2 - http://meetingorganizer.copernicus.org/egu2015/meetingprogramme LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-29 N1 - Last updated - 2015-06-01 ER - TY - JOUR T1 - Growth of Au on Pt icosahedral nanoparticles revealed by low-dose in situ TEM. AN - 1672092783; 25723499 AB - A growth mode was revealed by an in situ TEM study of nucleation and growth of Au on Pt icosahedral nanoparticles. Quantitative analysis of growth kinetics was carried out based on real-time TEM data, which shows the process involves: (1) deposition of Au on corner sites of Pt icosahedral nanoparticles, (2) diffusion of Au from corners to terraces and edges, and (3) subsequent layer-by-layer growth of Au on Au surfaces to form Pt@Au core-shell nanoparticles. The in situ TEM results indicate diffusion of Au from corner islands to terraces and edges is a kinetically controlled growth, as evidenced by a measurement of diffusion coefficients for these growth processes. We demonstrated that in situ electron microscopy is a valuable tool for quantitative study of nucleation and growth kinetics and can provide new insight into the design and precise control of heterogeneous nanostructures. JF - Nano letters AU - Wu, Jianbo AU - Gao, Wenpei AU - Wen, Jianguo AU - Miller, Dean J AU - Lu, Ping AU - Zuo, Jian-Min AU - Yang, Hong AD - †Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 West Green Street, Urbana, Illinois 61801, United States. ; ∥Electron Microscopy Center - Center for Nanoscale Materials, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States. ; ⊥Sandia National Laboratories, Albuquerque, New Mexico 87185, United States. Y1 - 2015/04/08/ PY - 2015 DA - 2015 Apr 08 SP - 2711 EP - 2715 VL - 15 IS - 4 KW - Platinum KW - 49DFR088MY KW - Gold KW - 7440-57-5 KW - Index Medicus KW - flow cell KW - nanoparticle KW - platinum KW - In situ TEM KW - growth KW - Radiation Dosage KW - Molecular Imprinting -- methods KW - Materials Testing -- methods KW - Platinum -- chemistry KW - Microscopy, Electron, Transmission -- methods KW - Metal Nanoparticles -- chemistry KW - Metal Nanoparticles -- ultrastructure KW - Crystallization -- methods KW - Gold -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1672092783?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Growth+of+Au+on+Pt+icosahedral+nanoparticles+revealed+by+low-dose+in+situ+TEM.&rft.au=Wu%2C+Jianbo%3BGao%2C+Wenpei%3BWen%2C+Jianguo%3BMiller%2C+Dean+J%3BLu%2C+Ping%3BZuo%2C+Jian-Min%3BYang%2C+Hong&rft.aulast=Wu&rft.aufirst=Jianbo&rft.date=2015-04-08&rft.volume=15&rft.issue=4&rft.spage=2711&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Facs.nanolett.5b00414 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-04-05 N1 - Date created - 2015-04-08 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/acs.nanolett.5b00414 ER - TY - JOUR T1 - Size-resolved global emission inventory of primary particulate matter from energy-related combustion sources AN - 1732831837; PQ0002222069 AB - Current emission inventories provide information about the mass emissions of different chemical species from different emitting sources without information concerning the size distribution of primary particulate matter (PM). The size distribution information, however, is an important input into chemical transport models that determine the fate of PM and its impacts on climate and public health. At present, models usually make rather rudimentary assumptions about the size distribution of primary PM emissions in their model inputs. In this study, we develop a global and regional, size-resolved, mass emission inventory of primary PM emissions from source-specific combustion components of the residential, industrial, power, and transportation sectors for the year 2010. Uncertainties in the emission profiles are also provided. The global size-resolved PM emissions show a distribution with a single peak and the majority of the mass of particles in size ranges smaller than 1 mu m. The PM size distributions for different sectors and world regions vary considerably, due to the different combustion characteristics. Typically, the sizes of particles decrease in the order: power sector > industrial sector > residential sector > transportation sector. Three emission scenarios are applied to the baseline distributions to study the likely changes in size distribution of emissions as clean technologies are implemented. JF - Atmospheric Environment AU - Winijkul, E AU - Yan, F AU - Lu, Z AU - Streets, D G AU - Bond, T C AU - Zhao, Y AD - Energy Systems Division, Argonne National Laboratory, Argonne, IL 60439, USA Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 137 EP - 147 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 107 SN - 1352-2310, 1352-2310 KW - Health & Safety Science Abstracts; Sustainability Science Abstracts; Pollution Abstracts; Environment Abstracts; Meteorological & Geoastrophysical Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Mass size distribution KW - PM emissions KW - Combustion sources KW - Global size-resolved emission inventory KW - Atmospheric pollution models KW - Particulates KW - Public health KW - Emission inventories KW - Public Health KW - Transportation KW - Chemical speciation KW - Atmospheric chemistry models KW - Particulate Matter KW - Emissions KW - Modelling KW - Particle size KW - Climate models KW - Climates KW - Climate KW - Chemical transport KW - Environmental impact KW - Surveys KW - Suspended particulate matter KW - Model Studies KW - Combustion KW - Profiles KW - Particulate matter emissions KW - Residential areas KW - Size distribution KW - Technology KW - M2 551.510.42:Air Pollution (551.510.42) KW - P 0000:AIR POLLUTION KW - SW 0810:General KW - M3 1010:Issues in Sustainable Development KW - H 2000:Transportation KW - Q2 09126:Sociology KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1732831837?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Atmospheric+Environment&rft.atitle=Size-resolved+global+emission+inventory+of+primary+particulate+matter+from+energy-related+combustion+sources&rft.au=Winijkul%2C+E%3BYan%2C+F%3BLu%2C+Z%3BStreets%2C+D+G%3BBond%2C+T+C%3BZhao%2C+Y&rft.aulast=Winijkul&rft.aufirst=E&rft.date=2015-04-01&rft.volume=107&rft.issue=&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Atmospheric+Environment&rft.issn=13522310&rft_id=info:doi/10.1016%2Fj.atmosenv.2015.02.037 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-11-01 N1 - Number of references - 38 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Environmental impact; Suspended particulate matter; Size distribution; Public health; Modelling; Atmospheric pollution models; Climate models; Particulate matter emissions; Atmospheric chemistry models; Particle size; Emission inventories; Transportation; Chemical speciation; Climate; Residential areas; Chemical transport; Emissions; Particulates; Technology; Combustion; Public Health; Profiles; Climates; Particulate Matter; Surveys; Model Studies DO - http://dx.doi.org/10.1016/j.atmosenv.2015.02.037 ER - TY - JOUR T1 - A generalized method for high throughput in-situ experiment data analysis: An example of battery materials exploration AN - 1705077818; PQ0001788538 AB - A generalized method is introduced to extract critical information from series of ranked correlated data. The method is generally applicable to all types of spectra evolving as a function of any arbitrary parameter. This approach is based on correlation functions and statistical scedasticity formalism. Numerous challenges in analyzing high throughput experimental data can be tackled using the herein proposed method. We applied this method to understand the reactivity pathway and formation mechanism of a Li-ion battery cathode material during high temperature synthesis using in-situ high-energy X-ray diffraction. We demonstrate that Pearson's correlation function can easily unravel all major phase transition and, more importantly, the minor structural changes which cannot be revealed by conventionally inspecting the series of diffraction patterns. Furthermore, a two-dimensional (2D) reactivity pattern calculated as the scedasticity along all measured reciprocal space of all successive diffraction pattern pairs unveils clearly the structural evolution path and the active areas of interest during the synthesis. The methods described here can be readily used for on-the-fly data analysis during various in-situ operando experiments in order to quickly evaluate and optimize experimental conditions, as well as for post data analysis and large data mining where considerable amount of data hinders the feasibility of the investigation through point-by-point inspection. JF - Journal of Power Sources AU - Aoun, Bachir AU - Yu, Cun AU - Fan, Longlong AU - Chen, Zonghai AU - Amine, Khalil AU - Ren, Yang AD - Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA, baoun@aps.anl.gov Y1 - 2015/04/01/ PY - 2015 DA - 2015 Apr 01 SP - 246 EP - 251 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 279 SN - 0378-7753, 0378-7753 KW - Environment Abstracts KW - Lithium ion batteries KW - Cathode materials KW - Batteries materials KW - In-situ analysis method KW - Feasibility studies KW - Batteries KW - High temperature KW - Inspection KW - X-ray diffraction KW - ENA 11:Non-Renewable Resources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705077818?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=A+generalized+method+for+high+throughput+in-situ+experiment+data+analysis%3A+An+example+of+battery+materials+exploration&rft.au=Aoun%2C+Bachir%3BYu%2C+Cun%3BFan%2C+Longlong%3BChen%2C+Zonghai%3BAmine%2C+Khalil%3BRen%2C+Yang&rft.aulast=Aoun&rft.aufirst=Bachir&rft.date=2015-04-01&rft.volume=279&rft.issue=&rft.spage=246&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2015.01.033 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Feasibility studies; Batteries; High temperature; X-ray diffraction; Inspection DO - http://dx.doi.org/10.1016/j.jpowsour.2015.01.033 ER - TY - JOUR T1 - Precipitation extremes over La Plata Basin; review and new results from observations and climate simulations AN - 1680752782; 2015-041731 AB - Monthly and daily precipitation extremes over La Plata Basin (LPB) are analyzed in the framework of the CLARIS-LPB Project. A review of the studies developed during the project and results of additional research are presented and discussed. Specific aspects of analysis are focused on large-scale versus local processes impacts on the intensity and frequency of precipitation extremes over LPB, and on the assessment of specific wet and dry spell indices and their changed characteristics in future climate scenarios. The analysis is shown for both available observations of precipitation in the region and ad-hoc global and regional models experiments. The Pacific, Indian and Atlantic Oceans can all impact precipitation intensity and frequency over LPB. In particular, considering the Pacific sector, different types of ENSO events (i.e. canonical vs Modoki or East vs Central) have different influences. Moreover, model projections indicate an increase in the frequency of precipitation extremes over LPB during El Nino and La Nina events in future climate. Local forcings can also be important for precipitation extremes. Here, the feedbacks between soil moisture and extreme precipitation in LPB are discussed based on hydric conditions in the region and model sensitivity experiments. Concerning droughts, it was found that they were more frequent in the western than in the eastern sector of LPB during the period of 1962-2008. On the other hand, observations and model experiments agree in that the monthly wet extremes were more frequent than the dry extremes in the northern and southern LPB sectors during the period 1979-2001, with higher frequency in the south. Abstract Copyright (2015) Elsevier, B.V. JF - Journal of Hydrology AU - Cavalcanti, I F A AU - Carril, A F AU - Penalba, O C AU - Grimm, A M AU - Menendez, C G AU - Sanchez, E AU - Cherchi, A AU - Sorensson, A AU - Robledo, F AU - Rivera, J AU - Pantano, V AU - Bettolli, L M AU - Zaninelli, P AU - Zamboni, L AU - Tedeschi, R G AU - Dominguez, M AU - Ruscica, R AU - Flach, R Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 211 EP - 230 PB - Elsevier, Amsterdam VL - 523 SN - 0022-1694, 0022-1694 KW - Paraguay KW - moisture KW - La Nina KW - simulation KW - climate change KW - ground water KW - El Nino Southern Oscillation KW - sensitivity analysis KW - drainage basins KW - climate KW - soils KW - Rio de la Plata KW - experimental studies KW - rainfall KW - Uruguay KW - surface water KW - statistical analysis KW - anomalies KW - evapotranspiration KW - models KW - South America KW - Argentina KW - Brazil KW - sea-surface temperature KW - water resources KW - land use KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680752782?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology&rft.atitle=Precipitation+extremes+over+La+Plata+Basin%3B+review+and+new+results+from+observations+and+climate+simulations&rft.au=Cavalcanti%2C+I+F+A%3BCarril%2C+A+F%3BPenalba%2C+O+C%3BGrimm%2C+A+M%3BMenendez%2C+C+G%3BSanchez%2C+E%3BCherchi%2C+A%3BSorensson%2C+A%3BRobledo%2C+F%3BRivera%2C+J%3BPantano%2C+V%3BBettolli%2C+L+M%3BZaninelli%2C+P%3BZamboni%2C+L%3BTedeschi%2C+R+G%3BDominguez%2C+M%3BRuscica%2C+R%3BFlach%2C+R&rft.aulast=Cavalcanti&rft.aufirst=I+F&rft.date=2015-04-01&rft.volume=523&rft.issue=&rft.spage=211&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology&rft.issn=00221694&rft_id=info:doi/10.1016%2Fj.jhydrol.2015.01.028 L2 - http://www.sciencedirect.com/science/journal/00221694 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 109 N1 - Document feature - illus. incl. 2 tables, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - JHYDA7 N1 - SubjectsTermNotLitGenreText - anomalies; Argentina; Brazil; climate; climate change; drainage basins; El Nino Southern Oscillation; evapotranspiration; experimental studies; ground water; La Nina; land use; models; moisture; Paraguay; rainfall; Rio de la Plata; sea-surface temperature; sensitivity analysis; simulation; soils; South America; statistical analysis; surface water; Uruguay; water resources DO - http://dx.doi.org/10.1016/j.jhydrol.2015.01.028 ER - TY - JOUR T1 - Role of Cr super(3+)/Cr super(6+) redox in chromium-substituted Li sub(2)MnO sub(3).LiNi sub(1/2)Mn sub(1/2)O sub(2) layered composite cathodes: electrochemistry and voltage fade AN - 1680442935; PQ0001510688 AB - The effect of redox-active Cr substitution on the electrochemistry and voltage fade of a lithium-rich "layered-layered" composite cathode material has been investigated. A series of Cr-substituted 0.5Li sub(2)MnO sub(3).0.5 LiNi sub(1/2)Mn sub(1/2)O sub(2) powder samples (i.e., Li sub(1.2)Ni sub(0.2-2/x)Mn sub(0.6-2/x)Cr sub(x)O sub(2), where x= 0, 0.05, 0.1, and 0.2) was synthesized via the sol-gel method. X-ray diffraction data confirmed the incorporation of Cr ions into the lattice structure. While similar initial charge capacities ( similar to 300 mA h g super(-1)) were obtained for all of the cathode samples, the capacity contribution from the Li sub(2)MnO sub(3) activation plateau (at 4.5 V vs. Li) decreased with increasing Cr content. This finding suggests suppressed oxygen loss that triggers cation migration and voltage fade in subsequent cycles. Continued investigation revealed that the Cr substitution mitigates the voltage fade on charge but not discharge. The resulting insignificant effect of Cr substitution on mitigating voltage fade, in spite of decreased Li sub(2)MnO sub(3) activation, is attributed to the additional instability caused by Cr super(6+) migration to a tetrahedral site, as evidenced by ex situ X-ray absorption spectroscopy. Our results provide the framework for a future redox active cation substitution strategy by highlighting the importance of the structural stability of the substituent itself. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Lee, Eungje AU - Park, Joong Sun AU - Wu, Tianpin AU - Sun, Cheng-Jun AU - Kim, Hacksung AU - Stair, Peter C AU - Lu, Jun AU - Zhou, Dehua AU - Johnson, Christopher S AD - Chemical Sciences and Engineering Division; Argonne National Laboratory; Argonne; IL 60439; USA; , eungje.lee@anl.gov Y1 - 2015/04// PY - 2015 DA - April 2015 SP - 9915 EP - 9924 PB - Royal Society of Chemistry VL - 3 IS - 18 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Ions KW - Composite materials KW - Mitigation KW - Chromium KW - X-ray diffraction KW - Migration KW - Sustainability KW - Oxygen KW - Plateaus KW - Absorption spectroscopy KW - Cations KW - Energy KW - Electrochemistry KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680442935?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Role+of+Cr+super%283%2B%29%2FCr+super%286%2B%29+redox+in+chromium-substituted+Li+sub%282%29MnO+sub%283%29.LiNi+sub%281%2F2%29Mn+sub%281%2F2%29O+sub%282%29+layered+composite+cathodes%3A+electrochemistry+and+voltage+fade&rft.au=Lee%2C+Eungje%3BPark%2C+Joong+Sun%3BWu%2C+Tianpin%3BSun%2C+Cheng-Jun%3BKim%2C+Hacksung%3BStair%2C+Peter+C%3BLu%2C+Jun%3BZhou%2C+Dehua%3BJohnson%2C+Christopher+S&rft.aulast=Lee&rft.aufirst=Eungje&rft.date=2015-04-01&rft.volume=3&rft.issue=18&rft.spage=9915&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta01214g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 34 N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Composite materials; Ions; Mitigation; Chromium; X-ray diffraction; Migration; Sustainability; Oxygen; Absorption spectroscopy; Plateaus; Cations; Energy; Electrochemistry DO - http://dx.doi.org/10.1039/c5ta01214g ER - TY - JOUR T1 - A novel polyamine allosteric site of SpeG from Vibrio cholerae is revealed by its dodecameric structure. AN - 1661990391; 25623305 AB - Spermidine N-acetyltransferase, encoded by the gene speG, catalyzes the initial step in the degradation of polyamines and is a critical enzyme for determining the polyamine concentrations in bacteria. In Escherichia coli, studies have shown that SpeG is the enzyme responsible for acetylating spermidine under stress conditions and for preventing spermidine toxicity. Not all bacteria contain speG, and many bacterial pathogens have developed strategies to either acquire or silence it for pathogenesis. Here, we present thorough kinetic analyses combined with structural characterization of the VCA0947 SpeG enzyme from the important human pathogen Vibrio cholerae. Our studies revealed the unexpected presence of a previously unknown allosteric site and an unusual dodecameric structure for a member of the Gcn5-related N-acetyltransferase superfamily. We show that SpeG forms dodecamers in solution and in crystals and describe its three-dimensional structure in several ligand-free and liganded structures. Importantly, these structural data define the first view of a polyamine bound in an allosteric site of an N-acetyltransferase. Kinetic characterization of SpeG from V. cholerae showed that it acetylates spermidine and spermine. The behavior of this enzyme is complex and exhibits sigmoidal curves and substrate inhibition. We performed a detailed non-linear regression kinetic analysis to simultaneously fit families of substrate saturation curves to uncover a simple kinetic mechanism that explains the apparent complexity of this enzyme. Our results provide a fundamental understanding of the bacterial SpeG enzyme, which will be key toward understanding the regulation of polyamine levels in bacteria during pathogenesis. JF - Journal of molecular biology AU - Filippova, Ekaterina V AU - Kuhn, Misty L AU - Osipiuk, Jerzy AU - Kiryukhina, Olga AU - Joachimiak, Andrzej AU - Ballicora, Miguel A AU - Anderson, Wayne F AD - Center for Structural Genomics of Infectious Diseases, Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. ; Biosciences Division, Argonne National Laboratory, Argonne, IL 60439, USA. ; Department of Chemistry and Biochemistry, Loyola University Chicago, Chicago, IL 60626, USA. ; Center for Structural Genomics of Infectious Diseases, Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. Electronic address: wf-anderson@northwestern.edu. Y1 - 2015/03/27/ PY - 2015 DA - 2015 Mar 27 SP - 1316 EP - 1334 VL - 427 IS - 6 Pt B KW - Bacterial Proteins KW - 0 KW - Polyamines KW - Index Medicus KW - acetyltransferase KW - dodecamer KW - allosteric enzyme KW - spermidine/spermine KW - GNAT KW - Acetylation KW - Kinetics KW - Humans KW - Molecular Sequence Data KW - Crystallography, X-Ray KW - Amino Acid Sequence KW - Substrate Specificity KW - Sequence Homology, Amino Acid KW - Allosteric Site KW - Protein Multimerization KW - Protein Conformation KW - Bacterial Proteins -- chemistry KW - Vibrio cholerae -- chemistry KW - Bacterial Proteins -- metabolism KW - Polyamines -- metabolism KW - Vibrio cholerae -- metabolism KW - Polyamines -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1661990391?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+molecular+biology&rft.atitle=A+novel+polyamine+allosteric+site+of+SpeG+from+Vibrio+cholerae+is+revealed+by+its+dodecameric+structure.&rft.au=Filippova%2C+Ekaterina+V%3BKuhn%2C+Misty+L%3BOsipiuk%2C+Jerzy%3BKiryukhina%2C+Olga%3BJoachimiak%2C+Andrzej%3BBallicora%2C+Miguel+A%3BAnderson%2C+Wayne+F&rft.aulast=Filippova&rft.aufirst=Ekaterina&rft.date=2015-03-27&rft.volume=427&rft.issue=6+Pt+B&rft.spage=1316&rft.isbn=&rft.btitle=&rft.title=Journal+of+molecular+biology&rft.issn=1089-8638&rft_id=info:doi/10.1016%2Fj.jmb.2015.01.009 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-05-19 N1 - Date created - 2015-03-09 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Protein Sci. 2014 Oct;23(10):1359-68 [25044180] Nucleic Acids Res. 2014 Jul;42(Web Server issue):W320-4 [24753421] Biochem Biophys Res Commun. 2000 May 19;271(3):559-64 [10814501] Annu Rev Biophys Biomol Struct. 2000;29:81-103 [10940244] J Bacteriol. 2000 Oct;182(19):5373-80 [10986239] Protein Expr Purif. 2002 Jun;25(1):8-15 [12071693] Proteins. 2003 Feb 15;50(3):437-50 [12557186] Protein Expr Purif. 2003 Jun;29(2):311-20 [12767824] Biophys J. 2003 Nov;85(5):3279-85 [14581228] Acta Crystallogr D Biol Crystallogr. 2004 Oct;60(Pt 10):1833-9 [15388930] Adv Enzyme Regul. 1964;2:265-74 [4222062] J Biol Chem. 1966 May 25;241(10):2268-79 [4223639] Biochem Biophys Res Commun. 1968 Feb 26;30(4):339-42 [4866297] Biochem J. 1977 Jul 1;165(1):55-9 [889575] Nat Protoc. 2008;3(7):1171-9 [18600222] Microbiol Rev. 1985 Mar;49(1):81-99 [3157043] Anal Biochem. 1989 May 15;179(1):131-7 [2757186] Can J Microbiol. 1991 Feb;37(2):148-53 [2059921] J Biol Chem. 1991 Jul 5;266(19):12439-41 [2061318] J Biol Chem. 1994 Sep 9;269(36):22581-5 [8077207] Nucleic Acids Res. 1994 Nov 11;22(22):4673-80 [7984417] J Biol Chem. 1995 Aug 11;270(32):18831-5 [7642535] Prog Biophys Mol Biol. 1997;68(2-3):207-62 [9652172] Acta Crystallogr D Biol Crystallogr. 1999 Jan;55(Pt 1):191-205 [10089410] J Gen Microbiol. 1961 Sep;26:1-9 [13863747] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2288-94 [15572783] Arch Biochem Biophys. 2005 Jan 1;433(1):212-26 [15581578] Acta Crystallogr D Biol Crystallogr. 2006 Aug;62(Pt 8):859-66 [16855301] J Biol Chem. 2007 Nov 30;282(48):35269-78 [17905741] EMBO Rep. 2008 Feb;9(2):199-205 [18188181] J Mol Biol. 2008 Nov 14;383(3):588-602 [18762190] J Enzyme Inhib Med Chem. 2009 Feb;24(1):22-8 [18615288] FEMS Microbiol Lett. 2009 Oct;299(2):166-74 [19694812] Adv Protein Chem Struct Biol. 2008;75:85-105 [20731990] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):235-42 [21460441] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):355-67 [21460454] Mol Microbiol. 2011 Oct;82(1):9-20 [21902734] J Chem Inf Model. 2011 Oct 24;51(10):2778-86 [21919503] PLoS One. 2011;6(11):e27226 [22102881] Protein Sci. 2013 Feb;22(2):222-30 [23184347] PLoS One. 2013;8(4):e60765 [23593304] J Biol Chem. 2013 Oct 18;288(42):30223-35 [24003232] MBio. 2013;4(6):e00889-13 [24345744] Nucleic Acids Res. 2000 Jan 1;28(1):235-42 [10592235] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.jmb.2015.01.009 ER - TY - JOUR T1 - 13-Methylarachidonic acid is a positive allosteric modulator of endocannabinoid oxygenation by cyclooxygenase. AN - 1665494235; 25648895 AB - Cyclooxygenase-2 (COX-2) oxygenates arachidonic acid (AA) and the endocannabinoids 2-arachidonoylglycerol (2-AG) and arachidonylethanolamide to prostaglandins, prostaglandin glyceryl esters, and prostaglandin ethanolamides, respectively. A structural homodimer, COX-2 acts as a conformational heterodimer with a catalytic and an allosteric monomer. Prior studies have demonstrated substrate-selective negative allosteric regulation of 2-AG oxygenation. Here we describe AM-8138 (13(S)-methylarachidonic acid), a substrate-selective allosteric potentiator that augments 2-AG oxygenation by up to 3.5-fold with no effect on AA oxygenation. In the crystal structure of an AM-8138·COX-2 complex, AM-8138 adopts a conformation similar to the unproductive conformation of AA in the substrate binding site. Kinetic analysis suggests that binding of AM-8138 to the allosteric monomer of COX-2 increases 2-AG oxygenation by increasing kcat and preventing inhibitory binding of 2-AG. AM-8138 restored the activity of COX-2 mutants that exhibited very poor 2-AG oxygenating activity and increased the activity of COX-1 toward 2-AG. Competition of AM-8138 for the allosteric site prevented the inhibition of COX-2-dependent 2-AG oxygenation by substrate-selective inhibitors and blocked the inhibition of AA or 2-AG oxygenation by nonselective time-dependent inhibitors. AM-8138 selectively enhanced 2-AG oxygenation in intact RAW264.7 macrophage-like cells. Thus, AM-8138 is an important new tool compound for the exploration of allosteric modulation of COX enzymes and their role in endocannabinoid metabolism. JF - The Journal of biological chemistry AU - Kudalkar, Shalley N AU - Nikas, Spyros P AU - Kingsley, Philip J AU - Xu, Shu AU - Galligan, James J AU - Rouzer, Carol A AU - Banerjee, Surajit AU - Ji, Lipin AU - Eno, Marsha R AU - Makriyannis, Alexandros AU - Marnett, Lawrence J AD - From the A. B. Hancock Jr. Memorial Laboratory for Cancer Research, Departments of Biochemistry. ; the Department of Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts 02115, and. ; From the A. B. Hancock Jr. Memorial Laboratory for Cancer Research, Vanderbilt Institute of Chemical Biology. ; the Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, and the Northeastern Collaborative Access Team, Argonne National Laboratory, Argonne, Illinois 60439. ; From the A. B. Hancock Jr. Memorial Laboratory for Cancer Research, Departments of Biochemistry, Vanderbilt Institute of Chemical Biology, Chemistry, and Pharmacology, Vanderbilt Center in Molecular Toxicology, Vanderbilt-Ingram Cancer Center, and Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0146, larry.marnett@vanderbilt.edu. Y1 - 2015/03/20/ PY - 2015 DA - 2015 Mar 20 SP - 7897 EP - 7909 VL - 290 IS - 12 KW - 13-methylarachidonic acid KW - 0 KW - Arachidonic Acids KW - Endocannabinoids KW - Prostaglandin-Endoperoxide Synthases KW - EC 1.14.99.1 KW - Oxygen KW - S88TT14065 KW - Index Medicus KW - Site-directed Mutagenesis KW - Cyclooxygenase (COX) KW - Endocannabinoid KW - Allosteric Regulation KW - Enzyme Kinetics KW - Oxygen -- metabolism KW - Kinetics KW - Prostaglandin-Endoperoxide Synthases -- metabolism KW - Endocannabinoids -- metabolism KW - Arachidonic Acids -- pharmacology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1665494235?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+biological+chemistry&rft.atitle=13-Methylarachidonic+acid+is+a+positive+allosteric+modulator+of+endocannabinoid+oxygenation+by+cyclooxygenase.&rft.au=Kudalkar%2C+Shalley+N%3BNikas%2C+Spyros+P%3BKingsley%2C+Philip+J%3BXu%2C+Shu%3BGalligan%2C+James+J%3BRouzer%2C+Carol+A%3BBanerjee%2C+Surajit%3BJi%2C+Lipin%3BEno%2C+Marsha+R%3BMakriyannis%2C+Alexandros%3BMarnett%2C+Lawrence+J&rft.aulast=Kudalkar&rft.aufirst=Shalley&rft.date=2015-03-20&rft.volume=290&rft.issue=12&rft.spage=7897&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+biological+chemistry&rft.issn=1083-351X&rft_id=info:doi/10.1074%2Fjbc.M114.634014 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-07-02 N1 - Date created - 2015-03-21 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 4RUT; PDB N1 - SuppNotes - Cited By: Acta Crystallogr D Biol Crystallogr. 2010 Apr;66(Pt 4):486-501 [20383002] J Am Chem Soc. 2014 Aug 13;136(32):11529-39 [25034362] J Biol Chem. 2010 Nov 5;285(45):34950-9 [20810665] J Biol Chem. 2011 May 27;286(21):19035-46 [21467029] J Biol Chem. 2011 Jun 10;286(23):20736-45 [21489986] Chem Rev. 2011 Oct 12;111(10):5899-921 [21923193] Nat Chem Biol. 2011 Nov;7(11):803-9 [22053353] J Lipid Res. 2012 Jul;53(7):1336-47 [22547204] Pharmacol Rev. 2013 Apr;65(2):849-71 [23512546] Nat Neurosci. 2013 Sep;16(9):1291-8 [23912944] Proc Natl Acad Sci U S A. 1994 Nov 8;91(23):11202-6 [7972034] Arch Biochem Biophys. 1994 Nov 15;315(1):111-8 [7979387] J Biol Chem. 1997 Aug 22;272(34):21181-6 [9261124] Nature. 1997 Aug 21;388(6644):773-8 [9285589] Am J Med. 1998 Mar 30;104(3A):2S-8S; discussion 21S-22S [9572314] J Biol Chem. 1999 Aug 13;274(33):22903-6 [10438452] Proc Natl Acad Sci U S A. 2006 Apr 18;103(16):6142-7 [16606823] J Physiol. 2006 May 1;572(Pt 3):735-45 [16484297] Acta Crystallogr D Biol Crystallogr. 2007 Jan;63(Pt 1):32-41 [17164524] Annu Rev Biochem. 2000;69:145-82 [10966456] Nature. 2000 May 4;405(6782):97-101 [10811226] J Neurochem. 2007 Sep;102(6):1966-77 [17539917] J Biol Chem. 2013 Oct 4;288(40):28641-55 [23955344] Cell Death Dis. 2013;4:e862 [24136226] Proc Natl Acad Sci U S A. 2013 Oct 22;110(43):17558-63 [24101490] J Biol Chem. 2014 Mar 7;289(10):6799-808 [24425867] J Biol Chem. 2000 Oct 27;275(43):33744-9 [10931854] Acta Crystallogr D Biol Crystallogr. 2001 Jan;57(Pt 1):122-33 [11134934] J Biol Chem. 2001 Aug 10;276(32):30072-7 [11402053] J Biol Chem. 2001 Oct 5;276(40):36993-8 [11447235] Biochemistry. 2002 Dec 31;41(52):15451-8 [12501173] Proc Natl Acad Sci U S A. 2004 Feb 17;101(7):1840-5 [14766978] Nat Neurosci. 2004 Jul;7(7):697-8 [15184902] J Biol Chem. 1984 May 25;259(10):6358-63 [6427213] J Biol Chem. 1985 Oct 15;260(23):12572-8 [3930499] Methods Enzymol. 1990;187:479-85 [2122187] Science. 1992 Dec 18;258(5090):1946-9 [1470919] Acta Crystallogr D Biol Crystallogr. 2008 Jan;64(Pt 1):61-9 [18094468] Br J Pharmacol. 2008 Apr;153(7):1538-49 [18297109] J Biol Chem. 2009 Apr 10;284(15):10046-55 [19218248] J Lipid Res. 2009 Apr;50 Suppl:S29-34 [18952571] Biochemistry. 2009 Aug 11;48(31):7353-5 [19603831] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):125-32 [20124692] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] Trends Pharmacol Sci. 2014 Jul;35(7):358-67 [24845457] J Biol Chem. 2010 Jul 16;285(29):22152-63 [20463020] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1074/jbc.M114.634014 ER - TY - JOUR T1 - Creep cavitation bands control porosity and fluid flow in lower crustal shear zones AN - 1689588932; 2015-054232 AB - Shear zones channelize fluid flow in Earth's crust. However, little is known about deep crustal fluid migration and how fluids are channelized and distributed in a deforming lower crustal shear zone. This study investigates the deformation mechanisms, fluid-rock interaction, and development of porosity in a monzonite ultramylonite from Lofoten, northern Norway. The rock was deformed and transformed into an ultramylonite under lower crustal conditions (temperature = 700-730 degrees C, pressure = 0.65-0.8 GPa). The ultramylonite consists of feldspathic layers and domains of amphibole + quartz + calcite, which result from hydration reactions of magmatic clinopyroxene. The average grain size in both domains is <25 mu m. Microstructural observations and electron backscatter diffraction analysis are consistent with diffusion creep as the dominant deformation mechanism in both domains. Festoons of isolated quartz grains define C'-type bands in feldspathic layers. These quartz grains do not show a crystallographic preferred orientation. The alignment of quartz grains is parallel to the preferred elongation of pores in the ultramylonites, as evidenced from synchrotron X-ray microtomography. Such C'-type bands are interpreted as creep cavitation bands resulting from diffusion creep deformation associated with grain boundary sliding. Mass-balance calculation indicates a 2% volume increase during the protolith-ultramylonite transformation, which is consistent with synkinematic formation of creep cavities producing dilatancy. Thus, this study presents evidence that creep cavitation bands may control deep crustal porosity and fluid flow. Nucleation of new phases in creep cavitation bands inhibits grain growth and enhances the activity of grain size-sensitive creep, thereby stabilizing strain localization in the polymineralic ultramylonites. JF - Geology (Boulder) AU - Menegon, Luca AU - Fusseis, Florian AU - Stunitz, Holger AU - Xiao, Xianghui Y1 - 2015/03// PY - 2015 DA - March 2015 SP - 227 EP - 230 PB - Geological Society of America (GSA), Boulder, CO VL - 43 IS - 3 SN - 0091-7613, 0091-7613 KW - tomography KW - silicates KW - silica minerals KW - igneous rocks KW - electron diffraction data KW - mechanism KW - Europe KW - monzonites KW - temperature KW - preferred orientation KW - plutonic rocks KW - ultramylonite KW - grain boundaries KW - Northern Norway KW - metamorphic rocks KW - X-ray analysis KW - framework silicates KW - lower crust KW - faults KW - P-T conditions KW - shear zones KW - Western Europe KW - pressure KW - structural analysis KW - fluid flow KW - mylonites KW - deformation KW - high pressure KW - porosity KW - Lofoten Islands KW - Scandinavia KW - Nordland Norway KW - creep KW - quartz KW - Norway KW - high temperature KW - crust KW - 18:Solid-earth geophysics KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1689588932?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geology+%28Boulder%29&rft.atitle=Creep+cavitation+bands+control+porosity+and+fluid+flow+in+lower+crustal+shear+zones&rft.au=Menegon%2C+Luca%3BFusseis%2C+Florian%3BStunitz%2C+Holger%3BXiao%2C+Xianghui&rft.aulast=Menegon&rft.aufirst=Luca&rft.date=2015-03-01&rft.volume=43&rft.issue=3&rft.spage=227&rft.isbn=&rft.btitle=&rft.title=Geology+%28Boulder%29&rft.issn=00917613&rft_id=info:doi/10.1130%2FG36307.1 L2 - http://geology.gsapubs.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States | Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 25 N1 - PubXState - CO N1 - Document feature - illus. N1 - SuppNotes - GSA Data Repository item 2015084 N1 - Last updated - 2015-06-18 N1 - CODEN - GLGYBA N1 - SubjectsTermNotLitGenreText - creep; crust; deformation; electron diffraction data; Europe; faults; fluid flow; framework silicates; grain boundaries; high pressure; high temperature; igneous rocks; Lofoten Islands; lower crust; mechanism; metamorphic rocks; monzonites; mylonites; Nordland Norway; Northern Norway; Norway; P-T conditions; plutonic rocks; porosity; preferred orientation; pressure; quartz; Scandinavia; shear zones; silica minerals; silicates; structural analysis; temperature; tomography; ultramylonite; Western Europe; X-ray analysis DO - http://dx.doi.org/10.1130/G36307.1 ER - TY - JOUR T1 - In situ high-energy synchrotron X-ray diffraction studies and first principles modeling of alpha -MnO sub(2) electrodes in Li-O sub(2) and Li-ion coin cells AN - 1677902718; PQ0001350579 AB - Despite their technological challenges, non-aqueous rechargeable lithium-oxygen cells offer extremely high theoretical energy densities and are therefore attracting much attention in a rapidly emerging area of electrochemical research. Early results have suggested that, among the transition metal oxides, alpha manganese dioxide ( alpha -MnO sub(2)) appears to offer electrocatalytic properties that can enhance the electrochemical properties of Li-O sub(2) cells, particularly during the early cycles. In this study, we have investigated the hybrid Li-ion/Li-O sub(2) character of alpha -MnO sub(2) electrodes in Li-O sub(2) coin cells by in situ high-energy synchrotron X-ray diffraction, and compared the results with conventional Li/ alpha -MnO sub(2) coin cells assembled under argon. Complementary first principles density functional theory calculations have been used to shed light on competing lithium insertion and lithium and oxygen insertion reactions within the alpha -MnO sub(2) tunnel structure during discharge, relative to lithium peroxide or lithium oxide formation. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Yang, Zhenzhen AU - Trahey, Lynn AU - Ren, Yang AU - Chan, Maria KY AU - Lin, Chikai AU - Okasinski, John AU - Thackeray, Michael M AD - Chemical Sciences and Engineering Division; Argonne National Laboratory; 9700 South Cass Avenue; Argonne; IL 60439; USA Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 7389 EP - 7398 PB - Royal Society of Chemistry VL - 3 IS - 14 SN - 2050-7488, 2050-7488 KW - Solid State and Superconductivity Abstracts (SO); METADEX (MD); Advanced Polymers Abstracts (EP); Environmental Engineering Abstracts (EN); Composites Industry Abstracts (ED); Engineered Materials Abstracts, Ceramics (EC); Electronics and Communications Abstracts (EA) KW - X-rays KW - Synchrotrons KW - Insertion KW - Electrodes KW - Diffraction KW - Coins KW - Sustainability KW - Lithium KW - Energy density UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1677902718?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=In+situ+high-energy+synchrotron+X-ray+diffraction+studies+and+first+principles+modeling+of+alpha+-MnO+sub%282%29+electrodes+in+Li-O+sub%282%29+and+Li-ion+coin+cells&rft.au=Yang%2C+Zhenzhen%3BTrahey%2C+Lynn%3BRen%2C+Yang%3BChan%2C+Maria+KY%3BLin%2C+Chikai%3BOkasinski%2C+John%3BThackeray%2C+Michael+M&rft.aulast=Yang&rft.aufirst=Zhenzhen&rft.date=2015-03-01&rft.volume=3&rft.issue=14&rft.spage=7389&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc4ta06633b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Number of references - 45 N1 - Last updated - 2015-12-07 DO - http://dx.doi.org/10.1039/c4ta06633b ER - TY - JOUR T1 - The unexpected discovery of the Mg(HMDS) sub(2)/MgCl sub(2) complex as a magnesium electrolyte for rechargeable magnesium batteries AN - 1673397879; PQ0001248175 AB - We developed a unique class of non-Grignard, aluminum-free magnesium electrolytes based on a simple mixture of magnesium compounds: magnesium hexamethyldisilazide (Mg(HMDS) sub(2)) and magnesium chloride (MgCl sub(2)). Through a reverse Schlenk equilibrium, a concentrated THF solution of Mg(HMDS) sub(2)-4MgCl sub(2) was prepared to achieve reversible Mg deposition/dissolution, a wide electrochemical window, and a coulombic efficiency of 99%. High reversible capacities and good rate capabilities were obtained in Mg-Mo sub(6)S sub(8) cells using these new electrolytes in tests with different rates. The unexpected high solubility of MgCl sub(2) in the solvent of THF with the help from Mg(HMDS) sub(2) provides a new way to develop magnesium electrolytes. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Liao, Chen AU - Sa, Niya AU - Key, Baris AU - Burrell, Anthony K AU - Cheng, Lei AU - Curtiss, Larry A AU - Vaughey, John T AU - Woo, Jung-Je AU - Hu, Libo AU - Pan, Baofei AU - Zhang, Zhengcheng AD - Joint Center for Energy Storage Research; Argonne National Laboratory; Lemont; Illinois; USA; , liaoc@anl.gov Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 6082 EP - 6087 PB - Royal Society of Chemistry VL - 3 IS - 11 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Electrolytes KW - Batteries KW - Energy KW - Solvents KW - Chlorides KW - Magnesium compounds KW - Magnesium KW - Electrochemistry KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673397879?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=The+unexpected+discovery+of+the+Mg%28HMDS%29+sub%282%29%2FMgCl+sub%282%29+complex+as+a+magnesium+electrolyte+for+rechargeable+magnesium+batteries&rft.au=Liao%2C+Chen%3BSa%2C+Niya%3BKey%2C+Baris%3BBurrell%2C+Anthony+K%3BCheng%2C+Lei%3BCurtiss%2C+Larry+A%3BVaughey%2C+John+T%3BWoo%2C+Jung-Je%3BHu%2C+Libo%3BPan%2C+Baofei%3BZhang%2C+Zhengcheng&rft.aulast=Liao&rft.aufirst=Chen&rft.date=2015-03-01&rft.volume=3&rft.issue=11&rft.spage=6082&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta00118h LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Number of references - 19 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Electrolytes; Batteries; Energy; Chlorides; Solvents; Magnesium compounds; Electrochemistry; Magnesium; Sustainability DO - http://dx.doi.org/10.1039/c5ta00118h ER - TY - JOUR T1 - 1,4-Bis(trimethylsilyl)-2,5-dimethoxybenzene: a novel redox shuttle additive for overcharge protection in lithium-ion batteries that doubles as a mechanistic chemical probe AN - 1673390138; PQ0001350617 AB - A novel redox shuttle additive, 1,4-bis(trimethylsilyl)-2,5-dimethoxybenzene (BTMSDB), is shown to deliver superb overcharge protection of LiFePO sub(4) electrode in Li-ion batteries. Using this molecule as a chemical probe, we trace the cause of the eventual failure of this additive to the gradual loss of steric protection in the corresponding radical cation, providing the much needed mechanistic insight in the factors controlling the long-term efficiency of overcharge protection. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Huang, Jinhua AU - Shkrob, Ilya A AU - Wang, Peiqi AU - Cheng, Lei AU - Pan, Baofei AU - He, Meinan AU - Liao, Chen AU - Zhang, Zhengcheng AU - Curtiss, Larry A AU - Zhang, Lu AD - Joint Center for Energy Storage Research; Argonne National Laboratory; IL 60439; USA; , luzhang@anl.gov Y1 - 2015/03// PY - 2015 DA - Mar 2015 SP - 7332 EP - 7337 PB - Royal Society of Chemistry VL - 3 IS - 14 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Batteries KW - Cations KW - Energy KW - Electrodes KW - Additives KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673390138?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=1%2C4-Bis%28trimethylsilyl%29-2%2C5-dimethoxybenzene%3A+a+novel+redox+shuttle+additive+for+overcharge+protection+in+lithium-ion+batteries+that+doubles+as+a+mechanistic+chemical+probe&rft.au=Huang%2C+Jinhua%3BShkrob%2C+Ilya+A%3BWang%2C+Peiqi%3BCheng%2C+Lei%3BPan%2C+Baofei%3BHe%2C+Meinan%3BLiao%2C+Chen%3BZhang%2C+Zhengcheng%3BCurtiss%2C+Larry+A%3BZhang%2C+Lu&rft.aulast=Huang&rft.aufirst=Jinhua&rft.date=2015-03-01&rft.volume=3&rft.issue=14&rft.spage=7332&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc5ta00899a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Number of references - 32 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Cations; Batteries; Energy; Electrodes; Additives; Sustainability DO - http://dx.doi.org/10.1039/c5ta00899a ER - TY - JOUR T1 - Reduced partition function ratios of iron and oxygen in goethite AN - 1673366798; 2015-034205 AB - First-principles calculations based on the density functional theory (DFT) with or without the addition of a Hubbard U correction, are performed on goethite in order to determine the iron and oxygen reduced partition function ratios (beta -factors). The calculated iron phonon density of states (pDOS), force constant and beta -factor are compared with reevaluated experimental beta -factors obtained from Nuclear Resonant Inelastic X-ray Scattering (NRIXS) measurements. The reappraisal of old experimental data is motivated by the erroneous previous interpretation of the low- and high-energy ends of the NRIXS spectrum of goethite and jarosite samples (Dauphas et al., 2012). Here the NRIXS data are analyzed using the SciPhon software that corrects for non-constant baseline. New NRIXS measurements also demonstrate the reproducibility of the results. Unlike for hematite and pyrite, a significant discrepancy remains between DFT, NRIXS and the existing Mossbauer-derived data. Calculations suggest a slight overestimation of the NRIXS signal possibly related to the baseline definition. The intrinsic features of the samples studied by NRIXS and Mossbauer spectroscopy may also contribute to the discrepancy (e.g., internal structural and/or chemical defects, microstructure, surface contribution). As for oxygen, DFT results indicate that goethite and hematite have similar beta -factors, which suggests almost no fractionation between the two minerals at equilibrium. Abstract Copyright (2015) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Blanchard, M AU - Dauphas, N AU - Hu, M Y AU - Roskosz, M AU - Alp, E E AU - Golden, D C AU - Sio, C K AU - Tissot, F L H AU - Zhao, J AU - Gao, L AU - Morris, R V AU - Fornace, M AU - Floris, A AU - Lazzeri, M AU - Balan, E Y1 - 2015/02/15/ PY - 2015 DA - 2015 Feb 15 SP - 19 EP - 33 PB - Elsevier, New York, NY VL - 151 SN - 0016-7037, 0016-7037 KW - isotope fractionation KW - reproducibility KW - oxygen KW - goethite KW - isotopes KW - data processing KW - Hubbard correction KW - stable isotopes KW - iron KW - partitioning KW - phase equilibria KW - oxides KW - spectra KW - Mossbauer spectra KW - nuclear resonant ionelastic X-ray scattering KW - experimental studies KW - sulfates KW - density functional theory KW - isotope ratios KW - O-18/O-16 KW - measurement KW - jarosite KW - NRIXS KW - metals KW - mathematical methods KW - pyrite KW - crystal chemistry KW - sulfides KW - chemical fractionation KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673366798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Reduced+partition+function+ratios+of+iron+and+oxygen+in+goethite&rft.au=Blanchard%2C+M%3BDauphas%2C+N%3BHu%2C+M+Y%3BRoskosz%2C+M%3BAlp%2C+E+E%3BGolden%2C+D+C%3BSio%2C+C+K%3BTissot%2C+F+L+H%3BZhao%2C+J%3BGao%2C+L%3BMorris%2C+R+V%3BFornace%2C+M%3BFloris%2C+A%3BLazzeri%2C+M%3BBalan%2C+E&rft.aulast=Blanchard&rft.aufirst=M&rft.date=2015-02-15&rft.volume=151&rft.issue=&rft.spage=19&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2014.12.006 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 59 N1 - PubXState - NY N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2015-04-16 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - chemical fractionation; crystal chemistry; data processing; density functional theory; experimental studies; goethite; Hubbard correction; iron; isotope fractionation; isotope ratios; isotopes; jarosite; mathematical methods; measurement; metals; Mossbauer spectra; NRIXS; nuclear resonant ionelastic X-ray scattering; O-18/O-16; oxides; oxygen; partitioning; phase equilibria; pyrite; reproducibility; spectra; stable isotopes; sulfates; sulfides DO - http://dx.doi.org/10.1016/j.gca.2014.12.006 ER - TY - JOUR T1 - Interfacial effects on lithium superoxide disproportionation in Li-O₂ batteries. AN - 1654699340; 25615912 AB - During the cycling of Li-O2 batteries the discharge process gives rise to dynamically evolving agglomerates composed of lithium-oxygen nanostructures; however, little is known about their composition. In this paper, we present results for a Li-O2 battery based on an activated carbon cathode that indicate interfacial effects can suppress disproportionation of a LiO2 component in the discharge product. High-intensity X-ray diffraction and transmission electron microscopy measurements are first used to show that there is a LiO2 component along with Li2O2 in the discharge product. The stability of the discharge product was then probed by investigating the dependence of the charge potential and Raman intensity of the superoxide peak with time. The results indicate that the LiO2 component can be stable for possibly up to days when an electrolyte is left on the surface of the discharged cathode. Density functional calculations on amorphous LiO2 reveal that the disproportionation process will be slower at an electrolyte/LiO2 interface compared to a vacuum/LiO2 interface. The combined experimental and theoretical results provide new insight into how interfacial effects can stabilize LiO2 and suggest that these interfacial effects may play an important role in the charge and discharge chemistries of a Li-O2 battery. JF - Nano letters AU - Zhai, Dengyun AU - Lau, Kah Chun AU - Wang, Hsien-Hau AU - Wen, Jianguo AU - Miller, Dean J AU - Lu, Jun AU - Kang, Feiyu AU - Li, Baohua AU - Yang, Wenge AU - Gao, Jing AU - Indacochea, Ernesto AU - Curtiss, Larry A AU - Amine, Khalil AD - Chemical Sciences and Engineering Division, ‡Materials Science Division, and §Electron Microscopy Center, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2015/02/11/ PY - 2015 DA - 2015 Feb 11 SP - 1041 EP - 1046 VL - 15 IS - 2 KW - Lithium−oxygen battery KW - lithium superoxide KW - nanostructure KW - stability KW - interface UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1654699340?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Interfacial+effects+on+lithium+superoxide+disproportionation+in+Li-O%E2%82%82+batteries.&rft.au=Zhai%2C+Dengyun%3BLau%2C+Kah+Chun%3BWang%2C+Hsien-Hau%3BWen%2C+Jianguo%3BMiller%2C+Dean+J%3BLu%2C+Jun%3BKang%2C+Feiyu%3BLi%2C+Baohua%3BYang%2C+Wenge%3BGao%2C+Jing%3BIndacochea%2C+Ernesto%3BCurtiss%2C+Larry+A%3BAmine%2C+Khalil&rft.aulast=Zhai&rft.aufirst=Dengyun&rft.date=2015-02-11&rft.volume=15&rft.issue=2&rft.spage=1041&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Fnl503943z LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-06-25 N1 - Date created - 2015-02-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/nl503943z ER - TY - JOUR T1 - Enabling comparative modeling of closely related genomes: example genus Brucella AN - 1811904640; PQ0003303822 AB - For many scientific applications, it is highly desirable to be able to compare metabolic models of closely related genomes. In this short report, we attempt to raise awareness to the fact that taking annotated genomes from public repositories and using them for metabolic model reconstructions is far from being trivial due to annotation inconsistencies. We are proposing a protocol for comparative analysis of metabolic models on closely related genomes, using fifteen strains of genus Brucella, which contains pathogens of both humans and livestock. This study lead to the identification and subsequent correction of inconsistent annotations in the SEED database, as well as the identification of 31 biochemical reactions that are common to Brucella, which are not originally identified by automated metabolic reconstructions. We are currently implementing this protocol for improving automated annotations within the SEED database and these improvements have been propagated into PATRIC, Model-SEED, KBase and RAST. This method is an enabling step for the future creation of consistent annotation systems and high-quality model reconstructions that will support in predicting accurate phenotypes such as pathogenicity, media requirements or type of respiration. JF - 3 Biotech AU - Faria, Jose P AU - Edirisinghe, Janaka N AU - Davis, James J AU - Disz, Terrence AU - Hausmann, Anna AU - Henry, Christopher S AU - Olson, Robert AU - Overbeek, Ross A AU - Pusch, Gordon D AU - Shukla, Maulik AU - Vonstein, Veronika AU - Wattam, Alice R AD - Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, IL, USA, jimdavis@uchicago.edu Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 101 EP - 105 PB - Springer Science & Business Media, Berlin/Heidelberg VL - 5 IS - 1 SN - 2190-572X, 2190-572X KW - Microbiology Abstracts B: Bacteriology; Biotechnology and Bioengineering Abstracts KW - Genomes KW - Databases KW - Seeds KW - Pathogenicity KW - Respiration KW - Brucella KW - Pathogens KW - Models KW - Livestock KW - J 02400:Human Diseases KW - W 30960:Bioinformatics & Computer Applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811904640?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=3+Biotech&rft.atitle=Enabling+comparative+modeling+of+closely+related+genomes%3A+example+genus+Brucella&rft.au=Faria%2C+Jose+P%3BEdirisinghe%2C+Janaka+N%3BDavis%2C+James+J%3BDisz%2C+Terrence%3BHausmann%2C+Anna%3BHenry%2C+Christopher+S%3BOlson%2C+Robert%3BOverbeek%2C+Ross+A%3BPusch%2C+Gordon+D%3BShukla%2C+Maulik%3BVonstein%2C+Veronika%3BWattam%2C+Alice+R&rft.aulast=Faria&rft.aufirst=Jose&rft.date=2015-02-01&rft.volume=5&rft.issue=1&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=3+Biotech&rft.issn=2190572X&rft_id=info:doi/10.1007%2Fs13205-014-0202-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Number of references - 21 N1 - Last updated - 2016-11-23 N1 - SubjectsTermNotLitGenreText - Genomes; Databases; Seeds; Pathogenicity; Respiration; Pathogens; Livestock; Models; Brucella DO - http://dx.doi.org/10.1007/s13205-014-0202-4 ER - TY - JOUR T1 - Monocyte-Targeting Supramolecular Micellar Assemblies: A Molecular Diagnostic Tool for Atherosclerosis AN - 1694974633; PQ0001663706 AB - Atherosclerosis is a multifactorial inflammatory disease that can progress silently for decades and result in myocardial infarction, stroke, and death. Diagnostic imaging technologies have made great strides to define the degree of atherosclerotic plaque burden through the severity of arterial stenosis. However, current technologies cannot differentiate more lethal "vulnerable plaques," and are not sensitive enough for preventive medicine. Imaging early molecular markers and quantifying the extent of disease progression continues to be a major challenge in the field. To this end, monocyte-targeting, peptide amphiphile micelles (PAMs) are engineered through the incorporation of the chemokine receptor CCR2-binding motif of monocyte chemoattractant protein-1 (MCP-1) and MCP-1 PAMs are evaluated preclinically as diagnostic tools for atherosclerosis. Monocyte-targeting is desirable as the influx of monocytes is a marker of early lesions, accumulation of monocytes is linked to atherosclerosis progression, and rupture-prone plaques have higher numbers of monocytes. MCP-1 PAMs bind to monocytes in vitro, and MCP-1 PAMs detect and discriminate between early- and late-stage atherosclerotic aortas. Moreover, MCP-1 PAMs are found to be eliminated via renal clearance and the mononuclear phagocyte system (MPS) without adverse side effects. Thus, MCP-1 PAMs are a promising new class of diagnostic agents capable of monitoring the progression of atherosclerosis. Monocyte-targeting, peptide amphiphile micelles are a promising new class of diagnostic agents for molecular imaging of atherosclerosis. In addition to discriminating and detecting the varying stages of atherosclerosis in vivo, these nanoparticles have the potential to be developed as theranostic systems for a variety of diseases where inflammation is the underlying cause. JF - Advanced Healthcare Materials AU - Chung, Eun Ji AU - Mlinar, Laurie B AU - Nord, Kathryn AU - Sugimoto, Matthew J AU - Wonder, Emily AU - Alenghat, Francis J AU - Fang, Yun AU - Tirrell, Matthew AD - Institute for Molecular Engineering, University of Chicago, 5747 S. Ellis Ave, Chicago, IL, 60637, USA. Y1 - 2015/02// PY - 2015 DA - Feb 2015 SP - 367 EP - 376 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 4 IS - 3 SN - 2192-2640, 2192-2640 KW - Immunology Abstracts; Biotechnology and Bioengineering Abstracts KW - Mononuclear phagocyte system KW - Monocyte chemoattractant protein 1 KW - Aorta KW - Stroke KW - Chemokine receptors KW - Arteriosclerosis KW - Diagnostic agents KW - imaging KW - Myocardial infarction KW - Inflammatory diseases KW - Micelles KW - Computed tomography KW - Kidney KW - Stenosis KW - Plaques KW - Monocytes KW - nanoparticles KW - Side effects KW - W 30910:Imaging KW - F 06910:Microorganisms & Parasites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1694974633?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advanced+Healthcare+Materials&rft.atitle=Monocyte-Targeting+Supramolecular+Micellar+Assemblies%3A+A+Molecular+Diagnostic+Tool+for+Atherosclerosis&rft.au=Chung%2C+Eun+Ji%3BMlinar%2C+Laurie+B%3BNord%2C+Kathryn%3BSugimoto%2C+Matthew+J%3BWonder%2C+Emily%3BAlenghat%2C+Francis+J%3BFang%2C+Yun%3BTirrell%2C+Matthew&rft.aulast=Chung&rft.aufirst=Eun&rft.date=2015-02-01&rft.volume=4&rft.issue=3&rft.spage=367&rft.isbn=&rft.btitle=&rft.title=Advanced+Healthcare+Materials&rft.issn=21922640&rft_id=info:doi/10.1002%2Fadhm.201400336 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Mononuclear phagocyte system; Monocyte chemoattractant protein 1; Aorta; Stroke; Chemokine receptors; Arteriosclerosis; Diagnostic agents; imaging; Myocardial infarction; Inflammatory diseases; Micelles; Computed tomography; Stenosis; Kidney; Plaques; Monocytes; nanoparticles; Side effects DO - http://dx.doi.org/10.1002/adhm.201400336 ER - TY - JOUR T1 - Cardiovascular Disease: Monocyte-Targeting Supramolecular Micellar Assemblies: A Molecular Diagnostic Tool for Atherosclerosis (Adv. Healthcare Mater. 3/2015) AN - 1694972447; PQ0001663714 AB - Current diagnostic imaging tools cannot differentiate lethal plaques in atherosclerosis, and are not sensitive enough for preventive medicine. On page 367 M. Tirrell and co-workers present monocyte-targeting, peptide amphiphile micelles as a new class of diagnostic agents for molecular imaging capable of discriminating between varying stages of atherosclerosis. Bio-distribution and clearance mechanisms are investigated in vivo. Cover image by Peter Allen. JF - Advanced Healthcare Materials AU - Chung, Eun Ji AU - Mlinar, Laurie B AU - Nord, Kathryn AU - Sugimoto, Matthew J AU - Wonder, Emily AU - Alenghat, Francis J AU - Fang, Yun AU - Tirrell, Matthew AD - Institute for Molecular Engineering, University of Chicago, 5747 S. Ellis Ave, Chicago, IL, 60637, USA. Y1 - 2015/02// PY - 2015 DA - Feb 2015 SP - 324 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 4 IS - 3 SN - 2192-2640, 2192-2640 KW - Immunology Abstracts; Biotechnology and Bioengineering Abstracts KW - Micelles KW - Computed tomography KW - Plaques KW - Arteriosclerosis KW - Cardiovascular diseases KW - Diagnostic agents KW - imaging KW - W 30910:Imaging KW - F 06935:Development, Aging & Organ Systems UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1694972447?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advanced+Healthcare+Materials&rft.atitle=Cardiovascular+Disease%3A+Monocyte-Targeting+Supramolecular+Micellar+Assemblies%3A+A+Molecular+Diagnostic+Tool+for+Atherosclerosis+%28Adv.+Healthcare+Mater.+3%2F2015%29&rft.au=Chung%2C+Eun+Ji%3BMlinar%2C+Laurie+B%3BNord%2C+Kathryn%3BSugimoto%2C+Matthew+J%3BWonder%2C+Emily%3BAlenghat%2C+Francis+J%3BFang%2C+Yun%3BTirrell%2C+Matthew&rft.aulast=Chung&rft.aufirst=Eun&rft.date=2015-02-01&rft.volume=4&rft.issue=3&rft.spage=324&rft.isbn=&rft.btitle=&rft.title=Advanced+Healthcare+Materials&rft.issn=21922640&rft_id=info:doi/10.1002%2Fadhm.201570016 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Micelles; Computed tomography; Plaques; Cardiovascular diseases; Arteriosclerosis; Diagnostic agents; imaging DO - http://dx.doi.org/10.1002/adhm.201570016 ER - TY - JOUR T1 - Model performance in spatiotemporal patterns of precipitation: New methods for identifying value added by a regional climate model AN - 1677984525; PQ0001291860 AB - Regional climate models (RCMs) are a standard tool for downscaling climate forecasts to finer spatial scales. The evaluation of RCMs against observational data is an important step in building confidence in the use of RCMs for future projection. In addition to model performance in climatological means and marginal distributions, a model's ability to capture spatiotemporal relationships is important. This study develops two approaches: (1) spatial correlation/variogram for a range of spatial lags, with total monthly precipitation and nonseasonal precipitation components used to assess the spatial variations of precipitation, and (2) spatiotemporal correlation for a wide range of distances, directions, and time lags, with daily precipitation occurrence used to detect the dynamic features of precipitation. These measures of spatial and spatiotemporal dependence are applied to a high-resolution RCM run and to the National Center for Environmental Prediction (NCEP)-U.S. Department of Energy Atmospheric Model Intercomparison Project II reanalysis data (NCEP-R2), which provide initial and lateral boundary conditions for the RCM. The RCM performs significantly better than NCEP-R2 in capturing both the spatial variations of total and nonseasonal precipitation components and the spatiotemporal correlations of daily precipitation occurrences, which are related to dynamic behavior of precipitating systems. The improvements are apparent not only at resolutions finer than that of NCEP-R2 but also when the RCM and observational data are aggregated to the resolution of NCEP-R2. Key Points * Spatial correlation measures model performance in spatial variations * Spatiotemporal correlation measures dynamic behavior of a model * An RCM adds value in spatial/temporal patterns JF - Journal of Geophysical Research: Atmospheres AU - Wang, Jiali AU - Swati, FNU AU - Stein, Michael L AU - Kotamarthi, VRao AD - Environmental Science Division, Argonne National Laboratory, Argonne, Illinois, USA. Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 1239 EP - 1259 PB - Blackwell Publishing Ltd., 9600 Garsington Road Oxford OX4 2DQ United States VL - 120 IS - 4 SN - 2169-897X, 2169-897X KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Mathematical models KW - Climate models KW - RCM KW - Construction KW - Dynamical systems KW - Precipitation KW - Correlation analysis KW - Dynamics KW - Confidence intervals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1677984525?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Model+performance+in+spatiotemporal+patterns+of+precipitation%3A+New+methods+for+identifying+value+added+by+a+regional+climate+model&rft.au=Wang%2C+Jiali%3BSwati%2C+FNU%3BStein%2C+Michael+L%3BKotamarthi%2C+VRao&rft.aulast=Wang&rft.aufirst=Jiali&rft.date=2015-02-01&rft.volume=120&rft.issue=4&rft.spage=1239&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD022434 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-05-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1002/2014JD022434 ER - TY - JOUR T1 - Demonstration of highly efficient lithium-sulfur batteries AN - 1673395591; PQ0001132289 AB - Lithium-sulfur coin cells were tested with the aim of mitigating the issue of polysulfide dissolution. Five approaches were investigated: optimization of the amount of sulfur that can be contained in the sulfur/carbon electrodes, introduction of different forms of carbon additives into the sulfur electrodes, impregnation of sulfur into the pores of high-surface-area carbon viaa melting process, addition of high-surface-area TiO sub(2) as a polysulfide-adsorbing agent in the sulfur electrodes, and use of lithium nitrate as an additive in the electrolyte. Among all these approaches, the most effective way to inhibit the shuttle phenomenon and improve the coulombic efficiency of the Li-S battery was the addition of LiNO sub(3) into the electrolyte. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Xu, Rui AU - Li, James CM AU - Lu, Jun AU - Amine, Khalil AU - Belharouak, Ilias AD - Chemical Sciences and Engineering Division; Argonne National Laboratory; 9700 S. Cass Ave; Argonne; IL 60439; USA; , belharouak@anl.gov Y1 - 2015/02// PY - 2015 DA - Feb 2015 SP - 4170 EP - 4179 PB - Royal Society of Chemistry VL - 3 IS - 8 SN - 2050-7488, 2050-7488 KW - Sustainability Science Abstracts KW - Sulfur KW - Electrolytes KW - Mitigation KW - Batteries KW - Nitrates KW - Energy KW - Electrodes KW - Additives KW - Sustainability KW - Lithium KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673395591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.atitle=Demonstration+of+highly+efficient+lithium-sulfur+batteries&rft.au=Xu%2C+Rui%3BLi%2C+James+CM%3BLu%2C+Jun%3BAmine%2C+Khalil%3BBelharouak%2C+Ilias&rft.aulast=Xu&rft.aufirst=Rui&rft.date=2015-02-01&rft.volume=3&rft.issue=8&rft.spage=4170&rft.isbn=&rft.btitle=&rft.title=Journal+of+materials+chemistry.+A%2C+Materials+for+energy+and+sustainability&rft.issn=20507488&rft_id=info:doi/10.1039%2Fc4ta06641c LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Number of references - 29 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Sulfur; Mitigation; Electrolytes; Nitrates; Batteries; Energy; Electrodes; Additives; Lithium; Sustainability DO - http://dx.doi.org/10.1039/c4ta06641c ER - TY - JOUR T1 - Proton magnetic resonance imaging using a nitrogen-vacancy spin sensor. AN - 1652460331; 25531089 AB - Magnetic resonance imaging, with its ability to provide three-dimensional, elementally selective imaging without radiation damage, has had a revolutionary impact in many fields, especially medicine and the neurosciences. Although challenging, its extension to the nanometre scale could provide a powerful new tool for the nanosciences, especially if it can provide a means for non-destructively visualizing the full three-dimensional morphology of complex nanostructures, including biomolecules. To achieve this potential, innovative new detection strategies are required to overcome the severe sensitivity limitations of conventional inductive detection techniques. One successful example is magnetic resonance force microscopy, which has demonstrated three-dimensional imaging of proton NMR with resolution on the order of 10 nm, but with the requirement of operating at cryogenic temperatures. Nitrogen-vacancy (NV) centres in diamond offer an alternative detection strategy for nanoscale magnetic resonance imaging that is operable at room temperature. Here, we demonstrate two-dimensional imaging of (1)H NMR from a polymer test sample using a single NV centre in diamond as the sensor. The NV centre detects the oscillating magnetic field from precessing protons as the sample is scanned past the NV centre. A spatial resolution of ∼12 nm is shown, limited primarily by the scan resolution. JF - Nature nanotechnology AU - Rugar, D AU - Mamin, H J AU - Sherwood, M H AU - Kim, M AU - Rettner, C T AU - Ohno, K AU - Awschalom, D D AD - IBM Research Division, Almaden Research Center, San Jose, California 95120, USA. ; 1] IBM Research Division, Almaden Research Center, San Jose, California 95120, USA [2] Center for Probing the Nanoscale, Stanford University, Stanford, California 94305, USA. ; Center for Spintronics and Quantum Computation, University of California, Santa Barbara, California 93106, USA. ; 1] Center for Spintronics and Quantum Computation, University of California, Santa Barbara, California 93106, USA [2] Institute for Molecular Engineering, University of Chicago, Illinois 60637, USA. Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 120 EP - 124 VL - 10 IS - 2 KW - Polymethyl Methacrylate KW - 9011-14-7 KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - Proton Magnetic Resonance Spectroscopy KW - Nitrogen -- chemistry KW - Magnetic Resonance Imaging KW - Polymethyl Methacrylate -- chemistry KW - Models, Theoretical UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1652460331?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+nanotechnology&rft.atitle=Proton+magnetic+resonance+imaging+using+a+nitrogen-vacancy+spin+sensor.&rft.au=Rugar%2C+D%3BMamin%2C+H+J%3BSherwood%2C+M+H%3BKim%2C+M%3BRettner%2C+C+T%3BOhno%2C+K%3BAwschalom%2C+D+D&rft.aulast=Rugar&rft.aufirst=D&rft.date=2015-02-01&rft.volume=10&rft.issue=2&rft.spage=120&rft.isbn=&rft.btitle=&rft.title=Nature+nanotechnology&rft.issn=1748-3395&rft_id=info:doi/10.1038%2Fnnano.2014.288 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-10-26 N1 - Date created - 2015-02-05 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/nnano.2014.288 ER - TY - JOUR T1 - Heterogeneous nucleation and shape transformation of multicomponent metallic nanostructures. AN - 1652410584; 25362354 AB - To be able to control the functions of engineered multicomponent nanomaterials, a detailed understanding of heterogeneous nucleation at the nanoscale is essential. Here, by using in situ synchrotron X-ray scattering, we show that in the heterogeneous nucleation and growth of Au on Pt or Pt-alloy seeds the heteroepitaxial growth of the Au shell exerts high stress (∼2 GPa) on the seed by forming a core/shell structure in the early stage of the reaction. The development of lattice strain and subsequent strain relaxation, which we show using atomic-resolution transmission electron microscopy to occur through the slip of {111} layers, induces morphological changes from a core/shell to a dumbbell structure, and governs the nucleation and growth kinetics. We also propose a thermodynamic model for the nucleation and growth of dumbbell metallic heteronanostructures. JF - Nature materials AU - Kwon, Soon Gu AU - Krylova, Galyna AU - Phillips, Patrick J AU - Klie, Robert F AU - Chattopadhyay, Soma AU - Shibata, Tomohiro AU - Bunel, Emilio E AU - Liu, Yuzi AU - Prakapenka, Vitali B AU - Lee, Byeongdu AU - Shevchenko, Elena V AD - Nanoscience and Technology Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA. ; Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607, USA. ; 1] CSRRI-IIT, MRCAT, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA [2] Physics Department, Advanced Materials Group, Illinois Institute of Technology, Chicago, Illinois 60616, USA. ; Chemical Science and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA. ; Center for Advanced Radiation Sources, University of Chicago, Argonne, Illinois 60439, USA. ; Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA. Y1 - 2015/02// PY - 2015 DA - February 2015 SP - 215 EP - 223 VL - 14 IS - 2 SN - 1476-1122, 1476-1122 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1652410584?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+materials&rft.atitle=Heterogeneous+nucleation+and+shape+transformation+of+multicomponent+metallic%C2%A0nanostructures.&rft.au=Kwon%2C+Soon+Gu%3BKrylova%2C+Galyna%3BPhillips%2C+Patrick+J%3BKlie%2C+Robert+F%3BChattopadhyay%2C+Soma%3BShibata%2C+Tomohiro%3BBunel%2C+Emilio+E%3BLiu%2C+Yuzi%3BPrakapenka%2C+Vitali+B%3BLee%2C+Byeongdu%3BShevchenko%2C+Elena+V&rft.aulast=Kwon&rft.aufirst=Soon&rft.date=2015-02-01&rft.volume=14&rft.issue=2&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=Nature+materials&rft.issn=14761122&rft_id=info:doi/10.1038%2Fnmat4115 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-04-13 N1 - Date created - 2015-01-23 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/nmat4115 ER - TY - JOUR T1 - Structural and inhibitory effects of hinge loop mutagenesis in serpin-2 from the malaria vector Anopheles gambiae. AN - 1652447982; 25525260 AB - Serpin-2 (SRPN2) is a key negative regulator of the melanization response in the malaria vector Anopheles gambiae. SRPN2 irreversibly inhibits clip domain serine proteinase 9 (CLIPB9), which functions in a serine proteinase cascade culminating in the activation of prophenoloxidase and melanization. Silencing of SRPN2 in A. gambiae results in spontaneous melanization and decreased life span and is therefore a promising target for vector control. The previously determined structure of SRPN2 revealed a partial insertion of the hinge region of the reactive center loop (RCL) into β sheet A. This partial hinge insertion participates in heparin-linked activation in other serpins, notably antithrombin III. SRPN2 does not contain a heparin binding site, and any possible mechanistic function of the hinge insertion was previously unknown. To investigate the function of the SRPN2 hinge insertion, we developed three SRPN2 variants in which the hinge regions are either constitutively expelled or inserted and analyzed their structure, thermostability, and inhibitory activity. We determined that constitutive hinge expulsion resulted in a 2.7-fold increase in the rate of CLIPB9Xa inhibition, which is significantly lower than previous observations of allosteric serpin activation. Furthermore, we determined that stable insertion of the hinge region did not appreciably decrease the accessibility of the RCL to CLIPB9. Together, these results indicate that the partial hinge insertion in SRPN2 does not participate in the allosteric activation observed in other serpins and instead represents a molecular trade-off between RCL accessibility and efficient formation of an inhibitory complex with the cognate proteinase. JF - The Journal of biological chemistry AU - Zhang, Xin AU - Meekins, David A AU - An, Chunju AU - Zolkiewski, Michal AU - Battaile, Kevin P AU - Kanost, Michael R AU - Lovell, Scott AU - Michel, Kristin AD - From the Division of Biology, Kansas State University, Manhattan, Kansas 66506. ; From the Division of Biology, Kansas State University, Manhattan, Kansas 66506, the Department of Entomology, College of Agriculture and Biotechnology, China Agricultural University, Beijing, China. ; the Department of Biochemistry and Molecular Biophysics, Kansas State University, Manhattan, Kansas 66506. ; Industrial Macromolecular Crystallography Association Collaborative Access Team, Hauptman-Woodward Medical Research Institute, Advanced Photon Source Argonne National Laboratory, Argonne, Illinois 60439, and. ; the Protein Structure Laboratory, Del Shankel Structural Biology Center, University of Kansas, Lawrence, Kansas 66407. ; From the Division of Biology, Kansas State University, Manhattan, Kansas 66506, kmichel@ksu.edu. Y1 - 2015/01/30/ PY - 2015 DA - 2015 Jan 30 SP - 2946 EP - 2956 VL - 290 IS - 5 KW - Serpins KW - 0 KW - serpin-2 KW - Index Medicus KW - Insect Immunity KW - Crystal Structure KW - Serpin KW - Structural Biology KW - Malaria KW - Host-Pathogen Interaction KW - Animals KW - Protein Structure, Secondary KW - Crystallography, X-Ray KW - Protein Structure, Tertiary KW - Calorimetry, Differential Scanning KW - Protein Conformation KW - Mutagenesis KW - Serpins -- chemistry KW - Serpins -- metabolism KW - Serpins -- genetics KW - Anopheles gambiae -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1652447982?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+biological+chemistry&rft.atitle=Structural+and+inhibitory+effects+of+hinge+loop+mutagenesis+in+serpin-2+from+the+malaria+vector+Anopheles+gambiae.&rft.au=Zhang%2C+Xin%3BMeekins%2C+David+A%3BAn%2C+Chunju%3BZolkiewski%2C+Michal%3BBattaile%2C+Kevin+P%3BKanost%2C+Michael+R%3BLovell%2C+Scott%3BMichel%2C+Kristin&rft.aulast=Zhang&rft.aufirst=Xin&rft.date=2015-01-30&rft.volume=290&rft.issue=5&rft.spage=2946&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+biological+chemistry&rft.issn=1083-351X&rft_id=info:doi/10.1074%2Fjbc.M114.625665 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-04-15 N1 - Date created - 2015-01-30 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 4RO9; PDB; 4ROA; 4RSQ N1 - SuppNotes - Cited By: Acta Crystallogr D Biol Crystallogr. 2014 Sep;70(Pt 9):2430-43 [25195756] Lancet. 2014 Sep 13;384(9947):1005-70 [25059949] Parasit Vectors. 2014;7:450 [25292318] J Biol Chem. 1999 Mar 12;274(11):7441-53 [10066809] J Biol Chem. 2004 Nov 5;279(45):47288-97 [15326167] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2256-68 [15572779] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2288-94 [15572783] Nucleic Acids Res. 2004;32(21):e174 [15585660] Acta Crystallogr D Biol Crystallogr. 2005 Jan;61(Pt 1):67-74 [15608377] Insect Biochem Mol Biol. 2005 Mar;35(3):241-8 [15705503] Trends Parasitol. 2005 Apr;21(4):192-9 [15780842] EMBO Rep. 2005 Sep;6(9):891-7 [16113656] J Biol Chem. 2005 Dec 2;280(48):40161-8 [16188883] Acta Crystallogr D Biol Crystallogr. 2006 Jan;62(Pt 1):72-82 [16369096] Cell Mol Life Sci. 2011 Jun;68(11):1929-39 [20953892] Proteins. 2011 Jun;79(6):1999-2003 [21465556] Methods Enzymol. 2011;501:63-87 [22078531] Malar J. 2011;10:378 [22185615] Parasit Vectors. 2012;5:69 [22475528] Science. 2012 May 25;336(6084):986-7 [22628641] J Biol Chem. 2005 Dec 30;280(52):43168-78 [16141197] Acta Crystallogr D Biol Crystallogr. 2006 Apr;62(Pt 4):439-50 [16552146] EMBO J. 2006 May 3;25(9):2029-37 [16619025] J Biol Chem. 2006 May 12;281(19):13424-32 [16517611] Cell Microbiol. 2006 Sep;8(9):1392-405 [16922859] J Biol Chem. 2006 Sep 22;281(38):28097-104 [16861233] J Biol Chem. 2008 Sep 12;283(37):25316-23 [18628205] Adv Parasitol. 2009;68:315-27 [19289199] PLoS Biol. 2009 Apr 7;7(4):e1000058 [19355786] Annu Rev Entomol. 2010;55:569-91 [19754246] Acta Crystallogr D Biol Crystallogr. 2010 Jan;66(Pt 1):12-21 [20057044] Acta Crystallogr D Biol Crystallogr. 2010 Jan;66(Pt 1):22-5 [20057045] Cell Microbiol. 2010 Jan;12(1):1-9 [19804484] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] Acta Crystallogr D Biol Crystallogr. 2010 Apr;66(Pt 4):486-501 [20383002] J Biochem. 2010 Aug;148(2):255-60 [20538715] Trends Biochem Sci. 2010 Oct;35(10):575-83 [20541942] Biochimie. 2010 Nov;92(11):1587-96 [20685328] J Biol Chem. 2011 Jan 14;286(2):1567-75 [21047786] Prog Mol Biol Transl Sci. 2011;99:185-240 [21238937] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):282-92 [21460446] J Immunol. 2011 Apr 15;186(8):4828-34 [21398604] Adv Exp Med Biol. 2010;708:218-38 [21528701] J Biol Chem. 2000 Feb 11;275(6):4092-8 [10660568] Nature. 2000 Oct 19;407(6806):923-6 [11057674] Genome Res. 2000 Dec;10(12):1845-64 [11116082] Proc Natl Acad Sci U S A. 2002 Aug 20;99(17):11079-84 [12169660] Chem Rev. 2002 Dec;102(12):4751-804 [12475206] Insect Biochem Mol Biol. 2003 Feb;33(2):197-208 [12535678] J Mol Biol. 2003 Feb 21;326(3):823-33 [12581643] Insect Biochem Mol Biol. 2003 Oct;33(10):1049-60 [14505699] Biochemistry. 1994 Jul 19;33(28):8538-47 [8031789] Nat Struct Biol. 1994 Jan;1(1):48-54 [7656006] Insect Biochem Mol Biol. 1995 Dec;25(10):1093-100 [8580909] Biochemistry. 1996 Jul 2;35(26):8495-503 [8679610] J Biol Chem. 1997 Jan 17;272(3):1849-55 [8999871] Nat Struct Biol. 1997 Apr;4(4):269-75 [9095194] Proc Natl Acad Sci U S A. 1997 Dec 23;94(26):14683-8 [9405673] Biochemistry. 1998 Mar 10;37(10):3272-7 [9521646] Proc Natl Acad Sci U S A. 1998 Oct 13;95(21):12220-5 [9770467] Science. 2012 May 25;336(6084):1030-3 [22628654] J Insect Physiol. 2013 Feb;59(2):138-47 [22960307] PLoS Pathog. 2013;9(9):e1003623 [24039584] J Biol Chem. 2013 Nov 22;288(47):33611-9 [24068708] Parasit Vectors. 2014;7:76 [24559061] Annu Rev Immunol. 2014;32:157-87 [24655294] Malar J. 2014;13:171 [24886586] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1074/jbc.M114.625665 ER - TY - CPAPER T1 - A Multi-Faceted Approach Towards Solar Forecasting T2 - 95th American Meteorological Society Annual Meeting AN - 1658696755; 6337590 JF - 95th American Meteorological Society Annual Meeting AU - Campos, Edwin AU - Wang, J AU - Constantinescu, E AU - Zhou, Z AU - Botterud, A AU - Cook, D AU - Hamann, H AU - Lu, S. Y1 - 2015/01/04/ PY - 2015 DA - 2015 Jan 04 KW - Prediction UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1658696755?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=95th+American+Meteorological+Society+Annual+Meeting&rft.atitle=A+Multi-Faceted+Approach+Towards+Solar+Forecasting&rft.au=Campos%2C+Edwin%3BWang%2C+J%3BConstantinescu%2C+E%3BZhou%2C+Z%3BBotterud%2C+A%3BCook%2C+D%3BHamann%2C+H%3BLu%2C+S.&rft.aulast=Campos&rft.aufirst=Edwin&rft.date=2015-01-04&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=95th+American+Meteorological+Society+Annual+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://ams.confex.com/ams/95Annual/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-28 N1 - Last updated - 2015-02-27 ER - TY - JOUR T1 - Preliminary analysis of Simeio; a low Ni-Ir kamacite grain of unusual origin from Comet Wild 2 AN - 1859789354; 2017-005149 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Humayun, M AU - Goldstein, J I AU - Mubarok, A AU - Westphal, Andrew J AU - Gainsforth, Zack AU - Sutton, S R AU - Lai, B AU - Silver, E AU - Stroud, R M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2298 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - stony meteorites KW - cobalt KW - isotopes KW - partial melting KW - mass spectra KW - kamacite KW - platinum group KW - iron KW - iridium KW - meteorites KW - Wild 2 Comet KW - alloys KW - spectra KW - gallium KW - siderophile elements KW - ureilite KW - achondrites KW - X-ray spectra KW - EDS spectra KW - ICP mass spectra KW - comets KW - metals KW - germanium KW - nickel KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1859789354?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Preliminary+analysis+of+Simeio%3B+a+low+Ni-Ir+kamacite+grain+of+unusual+origin+from+Comet+Wild+2&rft.au=Humayun%2C+M%3BGoldstein%2C+J+I%3BMubarok%2C+A%3BWestphal%2C+Andrew+J%3BGainsforth%2C+Zack%3BSutton%2C+S+R%3BLai%2C+B%3BSilver%2C+E%3BStroud%2C+R+M%3BAnonymous&rft.aulast=Humayun&rft.aufirst=M&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2015/pdf/2298.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 12 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on July, 5, 2016 N1 - Last updated - 2017-01-19 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; alloys; cobalt; comets; EDS spectra; gallium; germanium; ICP mass spectra; iridium; iron; isotopes; kamacite; mass spectra; metals; meteorites; nickel; partial melting; platinum group; siderophile elements; spectra; stony meteorites; ureilite; Wild 2 Comet; X-ray spectra ER - TY - JOUR T1 - Measurement of thermal properties of the ordinary chondrites relevant to planet-forming processes AN - 1855320921; 2017-002437 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - McCain, K A AU - Ciesla, F J AU - Heck, P R AU - Rout, S S AU - Pellin, M AU - Malliakas, C AU - Mitchell, J F AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 2730 PB - Lunar and Planetary Science Conference, Houston, TX VL - 46 KW - ordinary chondrites KW - bulk density KW - stony meteorites KW - thermal conductivity KW - thermal properties KW - LL chondrites KW - grain density KW - H chondrites KW - metamorphism KW - weathering KW - porosity KW - Chelyabinsk Meteorite KW - meteorites KW - thermal diffusivity KW - planetology KW - chondrites KW - shock metamorphism KW - Mount Browne Meteorite KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1855320921?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Measurement+of+thermal+properties+of+the+ordinary+chondrites+relevant+to+planet-forming+processes&rft.au=McCain%2C+K+A%3BCiesla%2C+F+J%3BHeck%2C+P+R%3BRout%2C+S+S%3BPellin%2C+M%3BMalliakas%2C+C%3BMitchell%2C+J+F%3BAnonymous&rft.aulast=McCain&rft.aufirst=K&rft.date=2015-01-01&rft.volume=46&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2015/pdf/2730.pdf LA - English DB - GeoRef N1 - Conference title - 46th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Accessed on Mar. 24, 2016 N1 - Last updated - 2017-01-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - bulk density; Chelyabinsk Meteorite; chondrites; grain density; H chondrites; LL chondrites; metamorphism; meteorites; Mount Browne Meteorite; ordinary chondrites; planetology; porosity; shock metamorphism; stony meteorites; thermal conductivity; thermal diffusivity; thermal properties; weathering ER - TY - JOUR T1 - Radionuclide mobility determining processes investigated by STXM AN - 1832727913; 2016-088993 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Schaefer, T AU - Huber, F AU - Temgoua, L AU - Claret, F AU - Darbha, G K AU - Chagneau, A AU - Jacobsen, C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2787 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - processes KW - sorption KW - colloidal materials KW - three-dimensional models KW - isotopes KW - prediction KW - pollution KW - porosity KW - ground water KW - aquifers KW - solid phase KW - radioactive isotopes KW - transport KW - metals KW - movement KW - heterogeneity KW - nanoparticles KW - Eh KW - chemical fractionation KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727913?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Radionuclide+mobility+determining+processes+investigated+by+STXM&rft.au=Schaefer%2C+T%3BHuber%2C+F%3BTemgoua%2C+L%3BClaret%2C+F%3BDarbha%2C+G+K%3BChagneau%2C+A%3BJacobsen%2C+C%3BAnonymous&rft.aulast=Schaefer&rft.aufirst=T&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2787&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2787.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - Last updated - 2016-10-27 N1 - SubjectsTermNotLitGenreText - aquifers; chemical fractionation; colloidal materials; Eh; ground water; heterogeneity; isotopes; metals; movement; nanoparticles; pollution; porosity; prediction; processes; radioactive isotopes; solid phase; sorption; three-dimensional models; transport ER - TY - JOUR T1 - Biogeochemical controls on the molecular scale interactions of mercury with microbes AN - 1832727885; 2016-088853 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Mishra, Bhoopesh AU - O'Loughlin, Edward J AU - Boyanov, Maxim I AU - Kemner, Kenneth M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2147 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - zinc KW - complexing KW - lead KW - bioavailability KW - ions KW - Shewanella KW - partitioning KW - ligands KW - geochemical controls KW - Shewanella oneidensis KW - thiols KW - cadmium KW - oxides KW - mineralization KW - geochemistry KW - Bacillus KW - Eh KW - mercury KW - Bacillus subtilis KW - biochemistry KW - molecular biology KW - metals KW - bacteria KW - mobilization KW - microorganisms KW - magnetite KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832727885?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Biogeochemical+controls+on+the+molecular+scale+interactions+of+mercury+with+microbes&rft.au=Mishra%2C+Bhoopesh%3BO%27Loughlin%2C+Edward+J%3BBoyanov%2C+Maxim+I%3BKemner%2C+Kenneth+M%3BAnonymous&rft.aulast=Mishra&rft.aufirst=Bhoopesh&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2147&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2147.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-10-27 N1 - SubjectsTermNotLitGenreText - Bacillus; Bacillus subtilis; bacteria; bioavailability; biochemistry; cadmium; complexing; Eh; geochemical controls; geochemistry; ions; lead; ligands; magnetite; mercury; metals; microorganisms; mineralization; mobilization; molecular biology; oxides; partitioning; Shewanella; Shewanella oneidensis; thiols; zinc ER - TY - JOUR T1 - Making hidden pristine submicron carbonaceous hollow grains stand out in situ in interplanetary dust AN - 1832681358; 768623-48 JF - Annual Meeting of the Meteoritical Society AU - Hu, Z W AU - Winarski, R AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 EP - Abstract no. 5267 PB - The Society, [United States] VL - 78 SN - 0735-049X, 0735-049X KW - tomography KW - carbonaceous composition KW - phase contrast X-ray nanotomography KW - in situ KW - thermal alteration KW - Stardust Mission KW - porous materials KW - interplanetary dust KW - morphology KW - visualization KW - cosmic dust KW - comets KW - X-ray analysis KW - Wild 2 Comet KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832681358?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Making+hidden+pristine+submicron+carbonaceous+hollow+grains+stand+out+in+situ+in+interplanetary+dust&rft.au=Hu%2C+Z+W%3BWinarski%2C+R%3BAnonymous&rft.aulast=Hu&rft.aufirst=Z&rft.date=2015-01-01&rft.volume=78&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2015/pdf/5267.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 78th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 11 N1 - SuppNotes - Accessed on Sept. 8, 2016 N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - carbonaceous composition; comets; cosmic dust; in situ; interplanetary dust; morphology; phase contrast X-ray nanotomography; porous materials; Stardust Mission; thermal alteration; tomography; visualization; Wild 2 Comet; X-ray analysis ER - TY - JOUR T1 - Paleontological projects at the Advanced Photon Source (APS) AN - 1819893140; 2016-077947 AB - Even Synchrotron radiation analysis have become more popular among paleontologists in the last years, there is still a large part of our community that does not consider these techniques to study their fossil material, even the correct application and interpretation of these novel techniques can help resolving some major problems related with these materials. In the last two years, several new projects on paleontology research have start at the Advanced Photon Source, the only third generation synchrotron source at the US, and one of the more brilliant photon sources around the globe. Some of these projects have benefited from the imaging capabilities of the two tomographic beamlines, capable of producing scans from 3 microns to 70 nm of spatial resolution. Other projects have explored the fluorescence capabilities of the large field of view instrument, capable of detecting the presence of different elements in the surface of large objects from 30 to 5 microns of spatial resolution. The projects developed at the APS during these last two years involve the study of different groups of plants from Mongolia, Panama or France, invertebrates in amber from all over the world, vertebrate bones and teeth and many more. JF - Abstracts with Programs - Geological Society of America AU - Soriano, Carmen AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 680 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1819893140?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Paleontological+projects+at+the+Advanced+Photon+Source+%28APS%29&rft.au=Soriano%2C+Carmen%3BAnonymous&rft.aulast=Soriano&rft.aufirst=Carmen&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=680&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-09-16 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Changing recharge mechanism in the Great Artesian Basin (GAB) determined by noble gas isotopes and (super 36) Cl/Cl measurements AN - 1815672256; 2016-075184 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Purtschert, R AU - Love, A J AU - Lu, Z T AU - Jiang, W AU - Mueller, P AU - Shand, P AU - Wohling, D AU - Fulton, S AU - Aeschbach-Hertig, W AU - Broeder, L AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2548 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - isotopes KW - halogens KW - mechanism KW - Northern Territory Australia KW - He-4 KW - Holocene KW - Great Artesian Basin KW - stable isotopes KW - variations KW - ground water KW - Ar-39 KW - Cenozoic KW - Kr-85 KW - radioactive isotopes KW - water-rock interaction KW - noble gases KW - carbon KW - movement KW - helium KW - Australia KW - chlorine KW - diffusion KW - Quaternary KW - Australasia KW - Cl-36 KW - ephemeral streams KW - krypton KW - argon KW - Kr-81 KW - Finke River KW - recharge KW - residence time KW - streams KW - C-14 KW - South Australia KW - Dalhousie Spring KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815672256?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Changing+recharge+mechanism+in+the+Great+Artesian+Basin+%28GAB%29+determined+by+noble+gas+isotopes+and+%28super+36%29+Cl%2FCl+measurements&rft.au=Purtschert%2C+R%3BLove%2C+A+J%3BLu%2C+Z+T%3BJiang%2C+W%3BMueller%2C+P%3BShand%2C+P%3BWohling%2C+D%3BFulton%2C+S%3BAeschbach-Hertig%2C+W%3BBroeder%2C+L%3BAnonymous&rft.aulast=Purtschert&rft.aufirst=R&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2548&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2548.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - Ar-39; argon; Australasia; Australia; C-14; carbon; Cenozoic; chlorine; Cl-36; Dalhousie Spring; diffusion; ephemeral streams; Finke River; Great Artesian Basin; ground water; halogens; He-4; helium; Holocene; isotopes; Kr-81; Kr-85; krypton; mechanism; movement; noble gases; Northern Territory Australia; Quaternary; radioactive isotopes; recharge; residence time; South Australia; stable isotopes; streams; variations; water-rock interaction ER - TY - JOUR T1 - Spinel-olivine-pyroxene equilibrium iron isotopic fractionation and applications to natural peridotites AN - 1807507671; 2016-066098 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Roskosz, Mathieu AU - Sio, C K I AU - Dauphas, N AU - Bi, W AU - Tissot, F L H AU - Hu, M Y AU - Zhao, J AU - Alp, E E AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 2690 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - silicates KW - isotope fractionation KW - isotopes KW - igneous rocks KW - partial melting KW - olivine group KW - metasomatism KW - stable isotopes KW - iron KW - ferric iron KW - pyroxene group KW - plutonic rocks KW - fayalite KW - olivine KW - orthosilicates KW - composition KW - oxides KW - applications KW - chain silicates KW - processes KW - isotope ratios KW - spinel KW - ultramafics KW - nesosilicates KW - X-ray data KW - metals KW - peridotites KW - Fe-57/Fe-54 KW - magnetite KW - 02D:Isotope geochemistry KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1807507671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Spinel-olivine-pyroxene+equilibrium+iron+isotopic+fractionation+and+applications+to+natural+peridotites&rft.au=Roskosz%2C+Mathieu%3BSio%2C+C+K+I%3BDauphas%2C+N%3BBi%2C+W%3BTissot%2C+F+L+H%3BHu%2C+M+Y%3BZhao%2C+J%3BAlp%2C+E+E%3BAnonymous&rft.aulast=Roskosz&rft.aufirst=Mathieu&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=2690&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/2690.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-07-29 N1 - SubjectsTermNotLitGenreText - applications; chain silicates; composition; fayalite; Fe-57/Fe-54; ferric iron; igneous rocks; iron; isotope fractionation; isotope ratios; isotopes; magnetite; metals; metasomatism; nesosilicates; olivine; olivine group; orthosilicates; oxides; partial melting; peridotites; plutonic rocks; processes; pyroxene group; silicates; spinel; stable isotopes; ultramafics; X-ray data ER - TY - JOUR T1 - Precipitation of pentavalent uranium on magnetite AN - 1797537186; 2016-052836 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Yuan, Ke AU - Ilton, Eugene S AU - Antonio, Mark R AU - Becker, Udo AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 3548 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - uranyl ion KW - pollution KW - electrochemical properties KW - X-ray spectra KW - remediation KW - XANES spectra KW - atomic force microscopy data KW - precipitation KW - metals KW - EXAFS data KW - oxides KW - valency KW - uranium KW - spectra KW - reduction KW - X-ray photoelectron spectra KW - geochemistry KW - actinides KW - mineral surface KW - Eh KW - magnetite KW - electrons KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797537186?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Precipitation+of+pentavalent+uranium+on+magnetite&rft.au=Yuan%2C+Ke%3BIlton%2C+Eugene+S%3BAntonio%2C+Mark+R%3BBecker%2C+Udo%3BAnonymous&rft.aulast=Yuan&rft.aufirst=Ke&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=3548&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/3548.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt conference 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - Last updated - 2016-06-17 N1 - SubjectsTermNotLitGenreText - actinides; atomic force microscopy data; Eh; electrochemical properties; electrons; EXAFS data; geochemistry; magnetite; metals; mineral surface; oxides; pollution; precipitation; reduction; remediation; spectra; uranium; uranyl ion; valency; X-ray photoelectron spectra; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Capture of Geothermal Heat as Chemical Energy AN - 1790974231; PQ0002955732 AB - Fluids that undergo endothermic reactions were evaluated as potential chemical energy carriers of heat from geothermal reservoirs for power generation. Their performance was compared with that of H sub(2)O and CO sub(2). The results show that (a) chemical energy carriers can produce more power from geothermal reservoirs than water and CO sub(2) and (b) working fluids should not be selected solely on the basis of their specific thermo-physical properties but rather on the basis of the rate of exergy (ideal power) they can deliver. This article discusses the results of the evaluation of two chemical energy carrier systems: ammonia and methanol/water mixtures. JF - Energy Sources Part A: Recovery, Utilization, and Environmental Effects AU - Jody, B J AU - Petchsingto, T AU - Doctor, R D AU - Snyder, S W AD - Energy Systems, Argonne National Laboratory, Argonne, Illinois, USA Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 2647 EP - 2654 PB - Taylor & Francis Group Ltd., 2 Park Square Oxford OX14 4RN United Kingdom VL - 37 IS - 24 SN - 1556-7036, 1556-7036 KW - Environment Abstracts KW - Thermodynamics KW - Energy KW - Ammonia KW - Electric power generation KW - Methanol KW - Environmental effects KW - Carbon dioxide KW - Reservoirs KW - Energy sources KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790974231?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+Sources+Part+A%3A+Recovery%2C+Utilization%2C+and+Environmental+Effects&rft.atitle=Capture+of+Geothermal+Heat+as+Chemical+Energy&rft.au=Jody%2C+B+J%3BPetchsingto%2C+T%3BDoctor%2C+R+D%3BSnyder%2C+S+W&rft.aulast=Jody&rft.aufirst=B&rft.date=2015-01-01&rft.volume=37&rft.issue=24&rft.spage=2647&rft.isbn=&rft.btitle=&rft.title=Energy+Sources+Part+A%3A+Recovery%2C+Utilization%2C+and+Environmental+Effects&rft.issn=15567036&rft_id=info:doi/10.1080%2F15567036.2012.721056 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Thermodynamics; Electric power generation; Ammonia; Energy; Methanol; Environmental effects; Carbon dioxide; Energy sources; Reservoirs DO - http://dx.doi.org/10.1080/15567036.2012.721056 ER - TY - JOUR T1 - Observing ion interactions at charged solid-liquid interfaces using X-rays; from statics to dynamics AN - 1789748119; 2016-043825 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Fenter, Paul AU - Lee, Sang Soo AU - Callagon, Erika AU - Nagy, Kathryn L AU - Sturchio, Neil C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 879 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - silicates KW - in situ KW - muscovite KW - mineral-water interface KW - properties KW - adsorption KW - ions KW - measurement KW - calcite KW - dolomite KW - transport KW - mica group KW - cations KW - sheet silicates KW - carbonates KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1789748119?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Observing+ion+interactions+at+charged+solid-liquid+interfaces+using+X-rays%3B+from+statics+to+dynamics&rft.au=Fenter%2C+Paul%3BLee%2C+Sang+Soo%3BCallagon%2C+Erika%3BNagy%2C+Kathryn+L%3BSturchio%2C+Neil+C%3BAnonymous&rft.aulast=Fenter&rft.aufirst=Paul&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=879&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/879.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-05-19 N1 - SubjectsTermNotLitGenreText - adsorption; calcite; carbonates; cations; dolomite; in situ; ions; measurement; mica group; mineral-water interface; muscovite; properties; sheet silicates; silicates; transport ER - TY - JOUR T1 - Improved Reactivity Estimation of MC super(2)-3/DIF3D for Fast Reactor Analysis AN - 1786162798; PQ0002503175 AB - The MC super(2)-3 code [1,2] is a multi group cross section generation code which was developed and verified for fast reactor system design and analysis by improving the resonance self-shielding and spectrum calculation methods of the previous version MC super(2)-2 and integrating the unit-cell calculation capabilities of SDX. Recently an improvement has been made to the code in order to better account for the heterogeneity effect in the multi group cross section. In this paper, we introduce the updated approach and perform verification tests to demonstrate the improved solution accuracy. JF - Transactions of the American Nuclear Society AU - Lee, Changho AU - Stauff, Nicolas E AD - Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439-4842 clee@anl.gov Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 791 EP - 794 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Systems design KW - Nuclear power generation KW - Nuclear reactors KW - Nuclear reactor components KW - Heterogeneity KW - Cross sections KW - Nuclear engineering KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786162798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Improved+Reactivity+Estimation+of+MC+super%282%29-3%2FDIF3D+for+Fast+Reactor+Analysis&rft.au=Lee%2C+Changho%3BStauff%2C+Nicolas+E&rft.aulast=Lee&rft.aufirst=Changho&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=791&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-03 ER - TY - JOUR T1 - Sensitivity/Uncertainty Analysis of the Effective Delayed Neutron Fraction with Deterministic Codes AN - 1786162316; PQ0002503179 AB - New computational capabilities are available at ANL for performing sensitivity analysis of integral parameters of interest and particularly of the kinetic parameters (notably, the effective delayed neutron fraction ( beta sub(eff), and the mean generation time [Lambda]), that generally were not included in past sensitivity studies. These new sensitivity modules were implemented in the PERSENT code [1] that has been developed at ANL for performing sensitivity analysis in 3D geometry with transport theory. For verification purposes, sensitivity modules for the analysis of beta sub(eff) and [Lambda] were added to the ERANOS code system [2] as well. In recent studies [3], a broad sensitivity and uncertainty analysis was presented on the mean generation time of a series of fast and thermal neutron systems. For completeness, a similar study is performed here on the effective delayed neutron fraction. For a selected system, this paper shows the comparison of sensitivity coefficients obtained for beta sub(eff) both ERANOS and PERSENT codes. A broad sensitivity and uncertainty study is then performed on the effective delayed neutron fraction of a series of fast and thermal neutron systems. JF - Transactions of the American Nuclear Society AU - Aliberti, Gerardo AU - Smith, Micheal A AD - Argonne National Laboratory - 9700 S. Cass Ave, Argonne IL 60439 aliberti@anl.gov Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 807 EP - 810 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Uncertainty KW - Three dimensional KW - Computation KW - Sensitivity analysis KW - Modules KW - Integrals KW - Thermal neutrons KW - Transport theory UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786162316?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Sensitivity%2FUncertainty+Analysis+of+the+Effective+Delayed+Neutron+Fraction+with+Deterministic+Codes&rft.au=Aliberti%2C+Gerardo%3BSmith%2C+Micheal+A&rft.aulast=Aliberti&rft.aufirst=Gerardo&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=807&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-03 ER - TY - JOUR T1 - Natural Convection Shutdown Heat Removal Test Facility (NSTF) Repeatability and Project Status AN - 1786161634; PQ0002503201 AB - The following summary provides a status overview of the recent testing performed on the Natural convection Shutdown heat removal Test Facility (NSTF) at Argonne National Laboratory (ANL). Construction of the large-scale thermal hydraulics test facility began in 2010 with support from the Department of Energy (DOE) and was completed within a 4-year time frame. Since the start of data collection in early 2014, the NSTF has seen over 450 hours of operation over the course of thirteen runs. JF - Transactions of the American Nuclear Society AU - Lisowski, D D AU - Bremer, N C AU - Gerardi, C D AU - Farmer, M T AD - Argonne National Laboratory, 9700 S. Cass Ave., Lemont IL 60439. USA dlisowski@anl.gov Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 898 EP - 901 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Convection KW - Reproducibility KW - Repeatability KW - Shutdowns KW - Test facilities KW - Hydraulic tests KW - Heat transfer KW - Government agencies UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786161634?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Natural+Convection+Shutdown+Heat+Removal+Test+Facility+%28NSTF%29+Repeatability+and+Project+Status&rft.au=Lisowski%2C+D+D%3BBremer%2C+N+C%3BGerardi%2C+C+D%3BFarmer%2C+M+T&rft.aulast=Lisowski&rft.aufirst=D&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=898&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-03 ER - TY - JOUR T1 - Comparative Study on Neutronics Characteristics of 1000 MWth Metal Fuel Sodium-cooled Fast Reactor AN - 1786161134; PQ0002503171 AB - Within the framework of the U.S.-Japan bilateral, the Civil Nuclear Energy R&D Working Group (CNWG) was formed to coordinate nuclear energy R&Ds in advanced reactor and fuel cycle technologies and for existing reactor fleet sustainability. In the cooperative framework, a numerical benchmark study on nuclear characteristics of a Sodium-cooled Fast Reactor (SFR) was performed. The comparative study focused on the evaluation of analytical methods and evaluation nuclear data files, using 1000 MWth Advanced Burner Reactor (ABR-1000) design, which has been proposed in the OECD/NEA/WPRS as a medium size metallic fuel benchmark core [1, 2, 3]. ANL and JAEA modeled the benchmark core using their separate neutronic analysis methods and neutron-library data and the results are compared in this paper. JF - Transactions of the American Nuclear Society AU - Stauff, N E AU - Uematsu, M M AU - Kim, T K AD - Argonne National Laboratory: 9700 South Cass Avenue, Argonne, IL, 60439, U.S.A. nstauff@anl.gov Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 773 EP - 776 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power generation KW - Nuclear reactors KW - Mathematical models KW - Nuclear reactor components KW - Benchmarking KW - Sustainability KW - Nuclear engineering KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786161134?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Comparative+Study+on+Neutronics+Characteristics+of+1000+MWth+Metal+Fuel+Sodium-cooled+Fast+Reactor&rft.au=Stauff%2C+N+E%3BUematsu%2C+M+M%3BKim%2C+T+K&rft.aulast=Stauff&rft.aufirst=N&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=773&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-06-30 ER - TY - JOUR T1 - Temperature Dependence of Test Fuel Power Density and Core Energy during Transient Reactor Test Facility (TREAT) Irradiation Experiments AN - 1786155750; PQ0002503076 AB - The Transient Reactor Test Facility (TREAT) is an experimental reactor located at Idaho National Laboratory (INL) designed to produce high neutron flux transients for investigation of the transient-induced behaviors of reactor fuels and their interactions with other materials and structures. TREAT started operation in February 1959 and performed hundreds of experiments until 1994 when it was placed on non-operational standby. JF - Transactions of the American Nuclear Society AU - Kontogeorgakos, Dimitrios C AU - Connaway, Heather M AU - Wright, Arthur E AD - Argonne National Laboratory, 9700 S Cass Ave, Argonne, IL 60439 Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 363 EP - 366 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power generation KW - Temperature dependence KW - Density KW - Nuclear fuels KW - Transient Reactor Test Facility KW - Neutron flux KW - Nuclear reactor components KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786155750?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Temperature+Dependence+of+Test+Fuel+Power+Density+and+Core+Energy+during+Transient+Reactor+Test+Facility+%28TREAT%29+Irradiation+Experiments&rft.au=Kontogeorgakos%2C+Dimitrios+C%3BConnaway%2C+Heather+M%3BWright%2C+Arthur+E&rft.aulast=Kontogeorgakos&rft.aufirst=Dimitrios&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=363&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-03 ER - TY - JOUR T1 - f-Element Complexation in Mixed Extractant UNF Reprocessing AN - 1786151874; PQ0002503000 AB - Used Nuclear Fuel (UNF) is a diverse chemical system which encompasses nearly half of the elements in the Periodic Table in a homogenous, solid waste form. Contained within UNF are multiple actinides which have the potential to be transmuted in nuclear reactors, reducing the required repository operations time by orders of magnitude. In order to transmute, actinides must be partitioned from the fission produced lanthanides, which are very strongly neutron absorbing and therefore reduce the effectiveness of transmutation operations. Among these actinides are the trivalent minor actinides americium and curium which share their oxidation state and have similar ionic radii to several of the lanthanides, resulting in very similar chemical behavior. This leads to difficult chemical separations which often require tight control on process chemistry.[1] JF - Transactions of the American Nuclear Society AU - Gullekson, Brian J AU - Holfeltz, Vanessa E AU - Paulenova, Alena AU - Gelis, Artem V AD - Oregon State University, Department of Nuclear Engineering, 100 Radiation Center, Corvallis, OR 97330 Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 64 EP - 66 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Periodic table KW - Nuclear fuels KW - Absorption KW - Complexation KW - Lanthanides KW - Chemical separation KW - Reprocessing KW - Actinides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786151874?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=f-Element+Complexation+in+Mixed+Extractant+UNF+Reprocessing&rft.au=Gullekson%2C+Brian+J%3BHolfeltz%2C+Vanessa+E%3BPaulenova%2C+Alena%3BGelis%2C+Artem+V&rft.aulast=Gullekson&rft.aufirst=Brian&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=64&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-06-30 ER - TY - JOUR T1 - Transient Testing of Nuclear Fuels in TREAT: An Overview AN - 1786151704; PQ0002503071 AB - Resumption of transient testing in the Transient Reactor Test (TREAT) facility within the next few years will benefit from the extensive prior utilization of the facility for a wide variety of experiments. Knowledge of those prior experiments and how they helped meet the goal of understanding and predicting the transient behavior of novel, advanced fuels provides the foundation for planning and designing future tests. It also provides the perspective of how the facility was best utilized previously, which can accelerate the work of future experimenters into achievements of even greater experiment fidelity and applicability for meeting modern expectations. The development of a compendium of information on the hundreds of experiments that were performed in TREAT is nearing completion [Ref. 1]. General observations from a review of that information are provided below. JF - Transactions of the American Nuclear Society AU - Wright, Arthur E AD - Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 aewright@anl.gov Y1 - 2015///0, PY - 2015 DA - 0, 2015 SP - 352 EP - 354 PB - American Nuclear Society, Inc. VL - 112 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear reactors KW - Nuclear fuels KW - Meetings KW - Foundations KW - Nuclear reactor components KW - Information dissemination KW - Utilization KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1786151704?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Transient+Testing+of+Nuclear+Fuels+in+TREAT%3A+An+Overview&rft.au=Wright%2C+Arthur+E&rft.aulast=Wright&rft.aufirst=Arthur&rft.date=2015-01-01&rft.volume=112&rft.issue=&rft.spage=352&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Last updated - 2016-05-03 ER - TY - JOUR T1 - Amber projects at the advanced photon source (ANL) AN - 1777469992; 2016-027798 AB - Synchtron-radiation-based tomography is one of the most versatile techniques for working with amber inclusions. The method allows for detailed study of the anatomy of plants and animals trapped in fossil resins at the micrometer scale, and for virtual dissections and examination of internal structures. We detail several amber-inclusion projects coordinated by the Advanced Photon Source (APS), one of the primary synchrotron light sources in the USA. We specifically highlight how synchrotron imaging aids in the study of various insect (bees, flies, beetles among others), arachnid (spiders, opilionids), and plant species from both the Mesozoic and Cenozoic. All results were obtained using the tomography beamline 2BM at the APS, but they encompass the wide range of analyses that are possible with synchrotron-radiation-based tomography. JF - Abstracts with Programs - Geological Society of America AU - Soriano, Carmen AU - Engel, Michael S AU - Grimaldi, David A AU - Sohn, Jae-Cheon AU - Santiago-Blay, Jorge AU - Saupe, Erin E AU - Solorzano-Kraemer, Monica AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 137 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777469992?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Amber+projects+at+the+advanced+photon+source+%28ANL%29&rft.au=Soriano%2C+Carmen%3BEngel%2C+Michael+S%3BGrimaldi%2C+David+A%3BSohn%2C+Jae-Cheon%3BSantiago-Blay%2C+Jorge%3BSaupe%2C+Erin+E%3BSolorzano-Kraemer%2C+Monica%3BAnonymous&rft.aulast=Soriano&rft.aufirst=Carmen&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=137&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-04-01 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Metal adsorption at mica-water interfaces AN - 1777467815; 2016-030129 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Bourg, Ian C AU - Lee, Sang Soo AU - Fenter, Paul AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 357 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - models KW - isotherms KW - dielectric properties KW - metals KW - mineral-water interface KW - cations KW - electrolytes KW - adsorption KW - simulation KW - measurement KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777467815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Metal+adsorption+at+mica-water+interfaces&rft.au=Bourg%2C+Ian+C%3BLee%2C+Sang+Soo%3BFenter%2C+Paul%3BAnonymous&rft.aulast=Bourg&rft.aufirst=Ian&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=357&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/357.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 6 N1 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - adsorption; cations; dielectric properties; electrolytes; isotherms; measurement; metals; mineral-water interface; models; simulation ER - TY - JOUR T1 - Reduction of Sb(V) by coupled biotic-abiotic processes under sulfidogenic conditions AN - 1777466764; 2016-030137 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Boyanov, Maxim I AU - Johnson, Clayton R AU - Antonopoulos, Dionysios A AU - Flynn, Theodore M AU - Kemner, Kenneth M AU - Koval, Jason AU - O'loughlin, Edward J AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 365 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - processes KW - antimony KW - pollutants KW - oxidation KW - pollution KW - phosphates KW - ferrihydrite KW - X-ray spectra KW - iron KW - ferrous iron KW - XANES spectra KW - ferric iron KW - mackinawite KW - metals KW - vivianite KW - oxides KW - valency KW - spectra KW - reduction KW - sulfides KW - chemical fractionation KW - 02C:Geochemistry of rocks, soils, and sediments KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466764?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Reduction+of+Sb%28V%29+by+coupled+biotic-abiotic+processes+under+sulfidogenic+conditions&rft.au=Boyanov%2C+Maxim+I%3BJohnson%2C+Clayton+R%3BAntonopoulos%2C+Dionysios+A%3BFlynn%2C+Theodore+M%3BKemner%2C+Kenneth+M%3BKoval%2C+Jason%3BO%27loughlin%2C+Edward+J%3BAnonymous&rft.aulast=Boyanov&rft.aufirst=Maxim&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=365&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/365.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - antimony; chemical fractionation; ferric iron; ferrihydrite; ferrous iron; iron; mackinawite; metals; oxidation; oxides; phosphates; pollutants; pollution; processes; reduction; spectra; sulfides; valency; vivianite; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Reduction and reoxidation of uranium; mechanisms, species, and implications for dispersal AN - 1777466619; 2016-030138 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Boyanov, Maxim I AU - Latta, Drew E AU - Mishra, Bhoopesh AU - O'loughlin, Edward J AU - Kemner, Kenneth M AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 366 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - in situ KW - oxidation KW - mechanism KW - rates KW - recovery KW - remediation KW - ground water KW - metals KW - EXAFS data KW - uranium KW - reduction KW - actinides KW - chemical fractionation KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466619?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Reduction+and+reoxidation+of+uranium%3B+mechanisms%2C+species%2C+and+implications+for+dispersal&rft.au=Boyanov%2C+Maxim+I%3BLatta%2C+Drew+E%3BMishra%2C+Bhoopesh%3BO%27loughlin%2C+Edward+J%3BKemner%2C+Kenneth+M%3BAnonymous&rft.aulast=Boyanov&rft.aufirst=Maxim&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=366&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/366.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - actinides; chemical fractionation; EXAFS data; ground water; in situ; mechanism; metals; oxidation; rates; recovery; reduction; remediation; uranium ER - TY - JOUR T1 - Influence of background electrolyte on Th (super IV) sorption behavior AN - 1777466448; 2016-030197 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Hellebrandt, S AU - Schmidt, M AU - Knope, K E AU - Lee, S S AU - Stubbs, J E AU - Eng, P J AU - Soderholm, L AU - Fenter, P AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 1225 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - anions KW - sorption KW - experimental studies KW - X-ray diffraction data KW - isotopes KW - behavior KW - mineral-water interface KW - electrolytes KW - radioactive waste KW - safety KW - radioactive isotopes KW - metals KW - thorium KW - cations KW - waste disposal KW - actinides KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Influence+of+background+electrolyte+on+Th+%28super+IV%29+sorption+behavior&rft.au=Hellebrandt%2C+S%3BSchmidt%2C+M%3BKnope%2C+K+E%3BLee%2C+S+S%3BStubbs%2C+J+E%3BEng%2C+P+J%3BSoderholm%2C+L%3BFenter%2C+P%3BAnonymous&rft.aulast=Hellebrandt&rft.aufirst=S&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=1225&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2015/uploads/abstracts/finalPDFs/1225.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2015 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - Document feature - 1 table N1 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - actinides; anions; behavior; cations; electrolytes; experimental studies; isotopes; metals; mineral-water interface; radioactive isotopes; radioactive waste; safety; sorption; thorium; waste disposal; X-ray diffraction data ER - TY - JOUR T1 - Photoreduction of fumarate by ZnS is initiated by ultrafast one-electron transfer AN - 1773799702; 2016-025292 AB - Photochemical reactions at mineral surfaces have been proposed as important steps in the origins of life. In particular, the photoexcitation of semiconductor minerals such as sphalerite (ZnS) by ultraviolet light generates electrons capable of driving reduction reactions in the reverse tricarboxylic acid (rTCA) cycle. The rTCA cycle has been proposed as a precursor to the oxidative cycle found in modern mitochondria. We used liquid chromatography coupled to mass spectrometry (LCMS) to investigate possible side reactions in the ZnS photocatalyzed steps of the rTCA cycle, finding a diversity of end products in most cases. However, the proton-coupled, two-electron reduction of fumarate to succinate occurred in high yield with no alternative products. We chose to study the mechanism of this plausible prebiotic reaction to determine the chemical and structural factors that enable a relatively complex multi-electron reaction to proceed with high selectivity. We used ultrafast spectroscopic techniques to study the reaction in a regime in which 310-nm illumination generated a single excited electron per ZnS nanoparticle. Using transient mid-infrared spectroscopy we captured the formation and relaxation of excited electrons in ZnS and found that, in the presence of fumarate, electrons are lost to the organic molecule at sub-picosecond timescales. Consistent with these data, a new optical absorption feature appeared on the same timescale that could represent an intermediate organic product of the fumarate reduction. Additionally, we observed a reduction of the fluorescence lifetime of photoexcited ZnS in the presence of fumarate, indicating that further interfacial electron transfer continues up to the approximately 100-picosecond timescale. Transient optical spectroscopy also showed the filling of mid-bandgap trap states in the ZnS, from which we were unable to detect further electron transfer to adsorbed fumarate. We derived a mechanistic scheme for the first steps of the reduction of fumarate on ZnS that incorporates all observations within approximately 7 ns, and propose two hypotheses for reaction completion. This work will constrain the potential early Earth environments that could facilitate photochemical transformation of metabolic organic molecules. JF - Abstracts with Programs - Geological Society of America AU - Mangiante, David M AU - Gilbert, Benjamin AU - Schaller, Richard D AU - Banfield, Jillian F AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 304 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773799702?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Photoreduction+of+fumarate+by+ZnS+is+initiated+by+ultrafast+one-electron+transfer&rft.au=Mangiante%2C+David+M%3BGilbert%2C+Benjamin%3BSchaller%2C+Richard+D%3BBanfield%2C+Jillian+F%3BAnonymous&rft.aulast=Mangiante&rft.aufirst=David&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=304&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-03-17 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Decision analysis to support development of the Glen Canyon Dam long-term experimental and management plan AN - 1773796660; 2016-023464 AB - The U.S. Geological Survey, in cooperation with the Bureau of Reclamation, National Park Service, and Argonne National Laboratory, completed a decision analysis to use in the evaluation of alternatives in the Environmental Impact Statement concerning the long-term management of water releases from Glen Canyon Dam and associated management activities. Two primary decision analysis methods, multicriteria decision analysis and the expected value of information, were used to evaluate the alternative strategies against the resource goals and to evaluate the influence of uncertainty. A total of 18 performance metrics associated with 8 out of 12 resource goals (fundamental objectives) were developed by the Bureau of Reclamation and National Park Service in partnership with subject-matter teams composed of Federal, State, tribal, and private experts. A total of 19 long-term strategies associated with 7 alternatives were developed by the Bureau of Reclamation, National Park Service, Argonne National Laboratory, U.S. Geological Survey, and Cooperating Agencies. The 19 long-term strategies were evaluated against the 18 performance metrics using a series of coupled simulation models, taking into account the effects of several important sources of uncertainty. A total of 27 Federal, State, tribal, and nongovernmental agencies were invited by the Assistant Secretary of Interior to participate in a swing-weighting exercise to understand the range of perspectives about how to place relative value on the resource goals and performance metrics; 14 of the 27 chose to participate. The results of the swing-weighting exercise were combined with the evaluation of the alternatives to complete a multicriteria decision analysis. The effects of uncertainty on the ranking of long-term strategies were evaluated through calculation of the value of information. The alternatives and their long-term strategies differed across performance metrics, producing unavoidable tradeoffs; thus, there was no long-term strategy that was dominated by another across all performance metrics. When the performance of each alternative was weighted across performance metrics, three alternatives (B, D, and G) were top-ranked depending on the set of weights proposed: Alternative B was favored by those stakeholders that placed a high value on hydropower; Alternative G was favored by those stakeholders that placed a high value on the restoration of natural processes, like beachbuilding and natural vegetation; and Alternative D was favored by the remaining stakeholders. Surprisingly, these rankings were not sensitive to the critical uncertainties that were evaluated; that is, the choice of a preferred long-term strategy was sensitive to the value-based judgment about how to place relative weight on the resource goals but was not sensitive to the uncertainties in the system dynamics that were evaluated in this analysis. The one area of uncertainty that did slightly affect the ranking of alternatives was the long-term pattern of hydrological input; because of this sensitivity, some attention to the possible effects of climate change is warranted. JF - Scientific Investigations Report AU - Runge, Michael C AU - LaGory, Kirk E AU - Russell, Kendra AU - Balsom, Janet R AU - Butler, R Alan AU - Coggins, Lewis G, Jr AU - Grantz, Katrina A AU - Hayse, John AU - Hlohowskyj, Ihor AU - Korman, Josh AU - May, James E AU - O'Rourke, Daniel J AU - Poch, Leslie A AU - Prairie, James R AU - VanKuiken, Jack C AU - Van Lonkhuyzen, Robert A AU - Varyu, David R AU - Verhaaren, Bruce T AU - Veselka, Thomas D AU - Williams, Nicholas T AU - Wuthrich, Kelsey K AU - Yackulic, Charles B AU - Billerbeck, Robert P AU - Knowles, Glen W Y1 - 2015 PY - 2015 DA - 2015 SP - 64 PB - U. S. Geological Survey, Reston, VA SN - 2328-031X, 2328-031X KW - United States KW - hydrology KW - Coconino County Arizona KW - rivers and streams KW - water management KW - national parks KW - ecosystems KW - decision-making KW - public lands KW - Glen Canyon Dam KW - environmental effects KW - climate change KW - Colorado River KW - dams KW - Arizona KW - water rights KW - USGS KW - land use KW - Indian reservations KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1773796660?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+Investigations+Report&rft.atitle=Decision+analysis+to+support+development+of+the+Glen+Canyon+Dam+long-term+experimental+and+management+plan&rft.au=Runge%2C+Michael+C%3BLaGory%2C+Kirk+E%3BRussell%2C+Kendra%3BBalsom%2C+Janet+R%3BButler%2C+R+Alan%3BCoggins%2C+Lewis+G%2C+Jr%3BGrantz%2C+Katrina+A%3BHayse%2C+John%3BHlohowskyj%2C+Ihor%3BKorman%2C+Josh%3BMay%2C+James+E%3BO%27Rourke%2C+Daniel+J%3BPoch%2C+Leslie+A%3BPrairie%2C+James+R%3BVanKuiken%2C+Jack+C%3BVan+Lonkhuyzen%2C+Robert+A%3BVaryu%2C+David+R%3BVerhaaren%2C+Bruce+T%3BVeselka%2C+Thomas+D%3BWilliams%2C+Nicholas+T%3BWuthrich%2C+Kelsey+K%3BYackulic%2C+Charles+B%3BBillerbeck%2C+Robert+P%3BKnowles%2C+Glen+W&rft.aulast=Runge&rft.aufirst=Michael&rft.date=2015-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Scientific+Investigations+Report&rft.issn=2328031X&rft_id=info:doi/10.3133%2Fsir20155176 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 59 N1 - PubXState - VA N1 - Document feature - illus. incl. 11 tables, sketch maps N1 - SuppNotes - Includes appendix; Prepared in cooperation with the Bureau of Reclamation, National Park Service, and Argonne National Laboratory N1 - Last updated - 2016-03-17 N1 - SubjectsTermNotLitGenreText - Arizona; climate change; Coconino County Arizona; Colorado River; dams; decision-making; ecosystems; environmental effects; Glen Canyon Dam; hydrology; Indian reservations; land use; national parks; public lands; rivers and streams; United States; USGS; water management; water rights DO - http://dx.doi.org/10.3133/sir20155176 ER - TY - JOUR T1 - X-ray and neutron diffraction on laser heated levitated samples; successes and challenges AN - 1761074440; 2016-009252 AB - Development of new nuclear reactors, fuels and actinide transmutation matrices requires high temperature data. We demonstrated that X-ray and neutron diffraction on solid laser heated levitated samples can be used on many refractory oxide compounds to obtain thermal expansion, refine high temperature crystal structure and for in situ study of phase transitions and melting in variable atmosphere. Aerodynamic levitators with laser heating are accessible as sample environment for X-ray diffraction experiments at beamline 6-ID-D at Advanced Photon Source at Argonne National Laboratory and for neutron diffraction experiments on NOMAD BL1B instrument at Spallation Neutron Source at Oak Ridge National Laboratory. In these instruments, solid spherical sample is suspended and rotated by a gas stream through a conical nozzle, heated by 400 W CO (sub 2) laser and temperature is monitored by pyrometer. X-ray diffraction pattern suitable for Rietveld refinement can be collected in less than 10 seconds and neutron diffraction pattern in approximately 10 minutes. The maximum temperature is inherently limited only by the sample and its amenability to laser heating. The method was successfully used to collect diffraction data up to the melting temperature on Hf, Zr, La, Nd, Sm, Eu, Gd, Ho, Er, Yb and Lu oxides and on La, Sm and Nd zirconates and hafnates. Due to fast equilibration at high temperature, in-situ determination of phase diagrams is possible. The challenges lie in improvement of accuracy of temperature measurement, thermal gradient reduction and reproducible sample rotation to assure random orientation. This methodology is promising for high temperature materials relevant to nuclear reactors, including new nuclear fuels, lanthanide contaminated UO (sub 2) , and other applications. JF - Abstracts with Programs - Geological Society of America AU - Ushakov, Sergey V AU - Pavlik, Alfred J, III AU - Navrotsky, Alexandra AU - Weber, Richard J K AU - Benmore, Chris J AU - Neuefeind, Joerg C AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 58 PB - Geological Society of America (GSA), Boulder, CO VL - 47 IS - 7 SN - 0016-7592, 0016-7592 KW - 17A:General geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1761074440?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=X-ray+and+neutron+diffraction+on+laser+heated+levitated+samples%3B+successes+and+challenges&rft.au=Ushakov%2C+Sergey+V%3BPavlik%2C+Alfred+J%2C+III%3BNavrotsky%2C+Alexandra%3BWeber%2C+Richard+J+K%3BBenmore%2C+Chris+J%3BNeuefeind%2C+Joerg+C%3BAnonymous&rft.aulast=Ushakov&rft.aufirst=Sergey&rft.date=2015-01-01&rft.volume=47&rft.issue=7&rft.spage=58&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2015 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2016-01-01 N1 - PubXState - CO N1 - Last updated - 2016-01-29 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Satellite remote sensing data can be used to model marine microbial metabolite turnover AN - 1687678938; PQ0001182386 AB - Sampling ecosystems, even at a local scale, at the temporal and spatial resolution necessary to capture natural variability in microbial communities are prohibitively expensive. We extrapolated marine surface microbial community structure and metabolic potential from 72 16S rRNA amplicon and 8 metagenomic observations using remotely sensed environmental parameters to create a system-scale model of marine microbial metabolism for 5904 grid cells (49 km super(2)) in the Western English Chanel, across 3 years of weekly averages. Thirteen environmental variables predicted the relative abundance of 24 bacterial Orders and 1715 unique enzyme-encoding genes that encode turnover of 2893 metabolites. The genes' predicted relative abundance was highly correlated (Pearson Correlation 0.72, P-value <10 super(-6)) with their observed relative abundance in sequenced metagenomes. Predictions of the relative turnover (synthesis or consumption) of CO sub(2) were significantly correlated with observed surface CO sub(2) fugacity. The spatial and temporal variation in the predicted relative abundances of genes coding for cyanase, carbon monoxide and malate dehydrogenase were investigated along with the predicted inter-annual variation in relative consumption or production of similar to 3000 metabolites forming six significant temporal clusters. These spatiotemporal distributions could possibly be explained by the co-occurrence of anaerobic and aerobic metabolisms associated with localized plankton blooms or sediment resuspension, which facilitate the presence of anaerobic micro-niches. This predictive model provides a general framework for focusing future sampling and experimental design to relate biogeochemical turnover to microbial ecology. JF - ISME Journal AU - Larsen, Peter E AU - Scott, Nicole AU - Post, Anton F AU - Field, Dawn AU - Knight, Rob AU - Hamada, Yuki AU - Gilbert, Jack A AD - Argonne National Laboratory, Biosciences Division, Argonne, IL, USA Y1 - 2015/01// PY - 2015 DA - Jan 2015 SP - 166 EP - 179 PB - Nature Publishing Group, The Macmillan Building London N1 9XW United Kingdom VL - 9 IS - 1 SN - 1751-7362, 1751-7362 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Data processing KW - Spatial distribution KW - Temporal variations KW - Malate dehydrogenase KW - Abundance KW - Remote sensing KW - spatial discrimination KW - Metabolites KW - Satellites KW - Sediments KW - Carbon monoxide KW - Community structure KW - Sampling KW - Carbon dioxide KW - rRNA 16S KW - Plankton KW - A 01450:Environmental Pollution & Waste Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1687678938?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=ISME+Journal&rft.atitle=Satellite+remote+sensing+data+can+be+used+to+model+marine+microbial+metabolite+turnover&rft.au=Larsen%2C+Peter+E%3BScott%2C+Nicole%3BPost%2C+Anton+F%3BField%2C+Dawn%3BKnight%2C+Rob%3BHamada%2C+Yuki%3BGilbert%2C+Jack+A&rft.aulast=Larsen&rft.aufirst=Peter&rft.date=2015-01-01&rft.volume=9&rft.issue=1&rft.spage=166&rft.isbn=&rft.btitle=&rft.title=ISME+Journal&rft.issn=17517362&rft_id=info:doi/10.1038%2Fismej.2014.107 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-06-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Data processing; Spatial distribution; Temporal variations; Abundance; Malate dehydrogenase; Remote sensing; Metabolites; spatial discrimination; Satellites; Sediments; Carbon monoxide; Community structure; Sampling; Carbon dioxide; rRNA 16S; Plankton DO - http://dx.doi.org/10.1038/ismej.2014.107 ER - TY - JOUR T1 - Continental degassing of (super 4) He by surficial discharge of deep groundwater AN - 1673366082; 2015-036024 JF - Nature Geoscience AU - Aggarwal, Pradeep K AU - Matsumoto, Takuya AU - Sturchio, Neil C AU - Chang, Hung K AU - Gastmans, Didier AU - Araguas-Araguas, Luis J AU - Jiang, Wei AU - Lu, Zheng-Tian AU - Mueller, Peter AU - Yokochi, Reika AU - Purtschert, Roland AU - Torgersen, Thomas Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 35 EP - 39 PB - Nature Publishing Group, London VL - 8 IS - 1 SN - 1752-0894, 1752-0894 KW - isotopes KW - atmosphere KW - continental crust KW - He-4 KW - krypton KW - stable isotopes KW - ground water KW - aquifers KW - Kr-81 KW - South America KW - radioactive isotopes KW - noble gases KW - Brazil KW - residence time KW - helium KW - discharge KW - Guarani Aquifer KW - crust KW - degassing KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673366082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nature+Geoscience&rft.atitle=Continental+degassing+of+%28super+4%29+He+by+surficial+discharge+of+deep+groundwater&rft.au=Aggarwal%2C+Pradeep+K%3BMatsumoto%2C+Takuya%3BSturchio%2C+Neil+C%3BChang%2C+Hung+K%3BGastmans%2C+Didier%3BAraguas-Araguas%2C+Luis+J%3BJiang%2C+Wei%3BLu%2C+Zheng-Tian%3BMueller%2C+Peter%3BYokochi%2C+Reika%3BPurtschert%2C+Roland%3BTorgersen%2C+Thomas&rft.aulast=Aggarwal&rft.aufirst=Pradeep&rft.date=2015-01-01&rft.volume=8&rft.issue=1&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Nature+Geoscience&rft.issn=17520894&rft_id=info:doi/10.1038%2FNGEO2302 L2 - http://www.nature.com/ngeo/index.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 31 N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2015-04-16 N1 - SubjectsTermNotLitGenreText - aquifers; atmosphere; Brazil; continental crust; crust; degassing; discharge; ground water; Guarani Aquifer; He-4; helium; isotopes; Kr-81; krypton; noble gases; radioactive isotopes; residence time; South America; stable isotopes DO - http://dx.doi.org/10.1038/NGEO2302 ER - TY - JOUR T1 - An in-situ, high-energy X-ray diffraction study of the thermal stability of delithiated LiVPO sub(4)F AN - 1655729655; PQ0001063811 AB - Differential scanning calorimetry (DSC) and in-situ high-energy X-ray diffraction (HEXRD) techniques were used to investigate the high-temperature reactions of a cathode containing Li sub(1-x)VPO sub(4)F with materials found in a lithium-ion cell, such as graphite additive in the cathode and the electrolyte. The DSC results indicate that the energy released during the reaction of the cathode containing Li sub(1-x)VPO sub(4)F with the electrolyte was about 1/3 of that released during a similar reaction of the delithiated, layered cathode containing Li sub(1.1)[Ni sub(1/3)Mn sub(1/3)Co sub(1/3)] sub(0.9)O sub(2). The in-situ HEXRD results provide evidence that the delithiated material, Li sub(1-x)VPO sub(4)F, reacts with protons and/or lithium ions found in the reaction mixture at elevated temperature, producing an LiVPO sub(4)F-like compound. This reaction is the most likely cause for the low energy release during heating, that is, the LiVPO sub(4)F-like material a ears to be thermally stable at temperatures up to 400 [degrees]C in the resence of LiPF sub(6). JF - Journal of Power Sources AU - Piao, Ying AU - Lin, Chi-kai AU - Qin, Yan AU - Zhou, Dehua AU - Ren, Yang AU - Bloom, Ira AU - Wei, Yingjin AU - Chen, Gang AU - Chen, Zonghai AD - Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, PR China; Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA, ira.bloom@anl.gov Y1 - 2015/01/01/ PY - 2015 DA - 2015 Jan 01 SP - 1250 EP - 1255 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 273 SN - 0378-7753, 0378-7753 KW - Environment Abstracts KW - Lithium-ion battery KW - Thermal stability KW - High-energy X-ray diffraction KW - Differential scanning calorimetry KW - Ions KW - Electrolytes KW - Energy KW - Temperature KW - Calorimetry KW - X-ray diffraction KW - Additives KW - Lithium KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1655729655?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=An+in-situ%2C+high-energy+X-ray+diffraction+study+of+the+thermal+stability+of+delithiated+LiVPO+sub%284%29F&rft.au=Piao%2C+Ying%3BLin%2C+Chi-kai%3BQin%2C+Yan%3BZhou%2C+Dehua%3BRen%2C+Yang%3BBloom%2C+Ira%3BWei%2C+Yingjin%3BChen%2C+Gang%3BChen%2C+Zonghai&rft.aulast=Piao&rft.aufirst=Ying&rft.date=2015-01-01&rft.volume=273&rft.issue=&rft.spage=1250&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2013.11.127 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Ions; Electrolytes; Energy; Temperature; Calorimetry; X-ray diffraction; Additives; Lithium DO - http://dx.doi.org/10.1016/j.jpowsour.2013.11.127 ER - TY - JOUR T1 - Ecological Succession and Viability of Human-Associated Microbiota on Restroom Surfaces AN - 1654695531; 21328336 AB - Human-associated bacteria dominate the built environment (BE). Following decontamination of floors, toilet seats, and soap dispensers in four public restrooms, in situ bacterial communities were characterized hourly, daily, and weekly to determine their successional ecology. The viability of cultivable bacteria, following the removal of dispersal agents (humans), was also assessed hourly. A late-successional community developed within 5 to 8 h on restroom floors and showed remarkable stability over weeks to months. Despite late-successional dominance by skin- and outdoor-associated bacteria, the most ubiquitous organisms were predominantly gut-associated taxa, which persisted following exclusion of humans. Staphylococcus represented the majority of the cultivable community, even after several hours of human exclusion. Methicillin-resistant Staphylococcus aureus (MRSA)-associated virulence genes were found on floors but were not present in assembled Staphylococcus pan-genomes. Viral abundances, which were predominantly enterophages, human papilloma virus, and herpesviruses, were significantly correlated with bacterial abundances and showed an unexpectedly low virus-to-bacterium ratio in surface-associated samples, suggesting that bacterial hosts are mostly dormant on BE surfaces. JF - Applied and Environmental Microbiology AU - Gibbons, Sean M AU - Schwartz, Tara AU - Fouquier, Jennifer AU - Mitchell, Michelle AU - Sangwan, Naseer AU - Gilbert, Jack A AU - Kelley, Scott T AD - Graduate Program in Biophysical Sciences, University of Chicago, Chicago, Illinois, USA, gilbertjack@anl.gov. PY - 2015 SP - 765 EP - 773 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 United States VL - 81 IS - 2 SN - 0099-2240, 0099-2240 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Virulence KW - Skin KW - Toilets KW - Drug resistance KW - Decontamination KW - Dispersal KW - Soaps KW - Staphylococcus aureus KW - Succession KW - Dominance KW - A 01340:Antibiotics & Antimicrobials UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1654695531?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+and+Environmental+Microbiology&rft.atitle=Ecological+Succession+and+Viability+of+Human-Associated+Microbiota+on+Restroom+Surfaces&rft.au=Gibbons%2C+Sean+M%3BSchwartz%2C+Tara%3BFouquier%2C+Jennifer%3BMitchell%2C+Michelle%3BSangwan%2C+Naseer%3BGilbert%2C+Jack+A%3BKelley%2C+Scott+T&rft.aulast=Gibbons&rft.aufirst=Sean&rft.date=2015-01-01&rft.volume=81&rft.issue=2&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=Applied+and+Environmental+Microbiology&rft.issn=00992240&rft_id=info:doi/10.1128%2FAEM.03117-14 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-01 N1 - Number of references - 39 N1 - Last updated - 2016-01-21 N1 - SubjectsTermNotLitGenreText - Virulence; Skin; Toilets; Drug resistance; Decontamination; Soaps; Dispersal; Succession; Dominance; Staphylococcus aureus DO - http://dx.doi.org/10.1128/AEM.03117-14 ER - TY - JOUR T1 - LytR-CpsA-Psr Enzymes as Determinants of Bacillus anthracis Secondary Cell Wall Polysaccharide Assembly AN - 1654694405; 21328430 AB - Bacillus anthracis, the causative agent of anthrax, replicates as chains of vegetative cells by regulating the separation of septal peptidoglycan. Surface (S)-layer proteins and associated proteins (BSLs) function as chain length determinants and bind to the secondary cell wall polysaccharide (SCWP). In this study, we identified the B. anthracis lcpD mutant, which displays increased chain length and S-layer assembly defects due to diminished SCWP attachment to peptidoglycan. In contrast, the B. anthracis lcpB3 variant displayed reduced cell size and chain length, which could be attributed to increased deposition of BSLs. In other bacteria, LytR-CpsA-Psr (LCP) proteins attach wall teichoic acid (WTA) and polysaccharide capsule to peptidoglycan. B. anthracis does not synthesize these polymers, yet its genome encodes six LCP homologues, which, when expressed in S. aureus, promote WTA attachment. We propose a model whereby B. anthracis LCPs promote attachment of SCWP precursors to discrete locations in the peptidoglycan, enabling BSL assembly and regulated separation of septal peptidoglycan. JF - Journal of Bacteriology AU - Zilla, Megan Liszewski AU - Chan, Yvonne GY AU - Lunderberg, Justin Mark AU - Schneewind, Olaf AU - Missiakas, Dominique AD - Howard Taylor Ricketts Laboratory, Argonne National Laboratory, Lemont, Illinois, USA, dmissiak@bsd.uchicago.edu. Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 343 EP - 353 PB - American Society for Microbiology, 1752 N Street N.W. Washington, DC 20036 United States VL - 197 IS - 2 SN - 0021-9193, 0021-9193 KW - Microbiology Abstracts B: Bacteriology KW - Genomes KW - Teichoic acids KW - Cell size KW - peptidoglycans KW - Anthrax KW - Enzymes KW - Bacillus anthracis KW - Staphylococcus aureus KW - Polysaccharides KW - Vegetative cells KW - Cell walls KW - J 02320:Cell Biology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1654694405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Bacteriology&rft.atitle=LytR-CpsA-Psr+Enzymes+as+Determinants+of+Bacillus+anthracis+Secondary+Cell+Wall+Polysaccharide+Assembly&rft.au=Zilla%2C+Megan+Liszewski%3BChan%2C+Yvonne+GY%3BLunderberg%2C+Justin+Mark%3BSchneewind%2C+Olaf%3BMissiakas%2C+Dominique&rft.aulast=Zilla&rft.aufirst=Megan&rft.date=2015-01-01&rft.volume=197&rft.issue=2&rft.spage=343&rft.isbn=&rft.btitle=&rft.title=Journal+of+Bacteriology&rft.issn=00219193&rft_id=info:doi/10.1128%2FJB.02364-14 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-01 N1 - Number of references - 60 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Genomes; Teichoic acids; Cell size; Enzymes; Anthrax; peptidoglycans; Polysaccharides; Vegetative cells; Cell walls; Staphylococcus aureus; Bacillus anthracis DO - http://dx.doi.org/10.1128/JB.02364-14 ER - TY - JOUR T1 - Solar Energy Development and Aquatic Ecosystems in the Southwestern United States: Potential Impacts, Mitigation, and Research Needs AN - 1654682273; 21332644 AB - The cumulative impacts of utility-scale solar energy facilities on aquatic ecosystems in the Southwestern United States are of concern, considering the many existing regional anthropogenic stressors. We review the potential impacts of solar energy development on aquatic habitat and biota. The greatest potential for impacts is related to the loss, fragmentation, or prolonged drying of ephemeral water bodies and drainage networks resulting from the loss of desert washes within the construction footprint of the facility. Groundwater-dependent aquatic habitat may also be affected by operational groundwater withdrawal in the case of water-intensive solar technologies. Solar panels have also been found to attract aquatic insects and waterbirds, potentially resulting in mortality. Avoiding construction activity near perennial and intermittent surface waters is the primary means of reducing impacts on aquatic habitats, followed by measures to minimize erosion, sedimentation, and contaminant inputs into waterways. Currently, significant data gaps make solar facility impact assessment and mitigation more difficult. Examples include the need for more regional and site-specific studies of surface-groundwater connectivity, more detailed maps of regional stream networks and riparian vegetation corridors, as well as surveys of the aquatic communities inhabiting ephemeral streams. In addition, because they often lack regulatory protection, there is also a need to develop valuation criteria for ephemeral waters based on their ecological and hydrologic function within the landscape. By addressing these research needs, we can achieve the goal of greater reliance on solar energy, while at the same time minimizing impacts on desert ecosystems. JF - Environmental Management AU - Grippo, Mark AU - Hayse, John W AU - O'Connor, Ben L AD - Environmental Science Division, Argonne National Laboratory, 9700 S. Cass Avenue, Bldg. 240, Argonne, IL, 60439, USA, mgrippo@anl.gov Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 244 EP - 256 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 55 IS - 1 SN - 0364-152X, 0364-152X KW - ASFA 1: Biological Sciences & Living Resources; Environment Abstracts; Ecology Abstracts; Sustainability Science Abstracts KW - Mitigation KW - Surface water KW - Maps KW - Streams KW - Biota KW - Aquatic communities KW - Ground water KW - Sedimentation KW - Solar energy KW - Mortality KW - Data processing KW - Drainage KW - Landscape KW - Vegetation KW - Drying KW - Aquatic ecosystems KW - Habitat KW - USA KW - Erosion KW - Deserts KW - Energy KW - Reviews KW - Stream KW - Solar power KW - Contaminants KW - Environment management KW - Mortality causes KW - Technology KW - ENA 03:Energy KW - M3 1010:Issues in Sustainable Development KW - Q1 08604:Stock assessment and management KW - D 04060:Management and Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1654682273?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Management&rft.atitle=Solar+Energy+Development+and+Aquatic+Ecosystems+in+the+Southwestern+United+States%3A+Potential+Impacts%2C+Mitigation%2C+and+Research+Needs&rft.au=Grippo%2C+Mark%3BHayse%2C+John+W%3BO%27Connor%2C+Ben+L&rft.aulast=Grippo&rft.aufirst=Mark&rft.date=2015-01-01&rft.volume=55&rft.issue=1&rft.spage=244&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/10.1007%2Fs00267-014-0384-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-01 N1 - Number of references - 94 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Erosion; Deserts; Stream; Solar power; Drying; Sedimentation; Habitat; Environment management; Mortality causes; Mortality; Data processing; Surface water; Drainage; Landscape; Vegetation; Maps; Aquatic ecosystems; Streams; Aquatic communities; Reviews; Energy; Ground water; Contaminants; Mitigation; Biota; Solar energy; Technology; USA DO - http://dx.doi.org/10.1007/s00267-014-0384-x ER - TY - JOUR T1 - Modeling pulsed soil respiration in an African savanna ecosystem AN - 1647001933; 21287007 AB - Savannas cover 60% of the African continent and play an important role in the global carbon (C) emissions from fire and land use. To better characterize the biophysical controls over soil respiration in these settings, half-hourly observations of volumetric soil-water content, temperature, and the concentration of carbon dioxide (CO2) at different soil depths were continually measured from 2005 to 2007 under trees ("sub-canopy") and between trees ("inter-canopy") in a savanna vegetation near Skukuza, Kruger National Park, South Africa. The measured soil climate and CO2 concentration data were assimilated into a process-based model that estimates the CO2 production and flux with coupled dynamics of dissolved organic C (DOC) and microbial biomass C. Our results show that temporal and spatial variations in CO2 flux were strongly influenced by precipitation and vegetation cover, with two times greater CO2 flux in the sub-canopy plots (2421gCO2 m-2 yr-1) than in the inter-canopy plots (1290gCO2 m-2 yr-1). Precipitation influenced soil respiration by changing soil temperature and moisture; however, our modeling analysis suggests that the pulsed response of soil respiration to precipitation events (known as "Birch effect") is a key control on soil fluxes at this site. At this site, "Birch effect" contributed to approximately 50% and 65% of heterotrophic respiration or 20% and 39% of soil respiration in the sub-canopy and inter-canopy plots, respectively. These results suggest that pulsed response of respiration to precipitation events is an important component of the C cycle of savannas and should be considered in both measurement and modeling studies of carbon exchange in similar ecosystems. JF - Agricultural and Forest Meteorology AU - Fan, Zhaosheng AU - Neff, Jason C AU - Hanan, Niall P AD - Biosciences Division, Argonne National Laboratory, Argonne, IL 60439, USA Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 282 EP - 292 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 200 SN - 0168-1923, 0168-1923 KW - Meteorological & Geoastrophysical Abstracts; Water Resources Abstracts; Environment Abstracts KW - DOC KW - Birch effect KW - Microbial KW - Precipitation KW - Drying KW - Wetting KW - Ecosystems KW - Trees KW - Rainfall KW - Respiration KW - National parks KW - Soil KW - Climate and vegetation KW - Vegetation cover KW - Savannahs KW - Carbon KW - South Africa, Mpumalanga, Kruger Natl. Park KW - Soil respiration KW - Meteorology KW - South Africa KW - Fires KW - Soil temperatures KW - Climate models KW - Climates KW - Temperature KW - Vegetation KW - Biomass KW - Land use KW - Continents KW - Carbon dioxide KW - Fluctuations KW - Carbon Dioxide KW - SW 0810:General KW - M2 551.510.3/.4:Physical Properties/Composition (551.510.3/.4) KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1647001933?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Agricultural+and+Forest+Meteorology&rft.atitle=Modeling+pulsed+soil+respiration+in+an+African+savanna+ecosystem&rft.au=Fan%2C+Zhaosheng%3BNeff%2C+Jason+C%3BHanan%2C+Niall+P&rft.aulast=Fan&rft.aufirst=Zhaosheng&rft.date=2015-01-01&rft.volume=200&rft.issue=&rft.spage=282&rft.isbn=&rft.btitle=&rft.title=Agricultural+and+Forest+Meteorology&rft.issn=01681923&rft_id=info:doi/10.1016%2Fj.agrformet.2014.10.009 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-01 N1 - Last updated - 2016-11-09 N1 - SubjectsTermNotLitGenreText - Climate and vegetation; Fires; Soil temperatures; Climate models; Soil respiration; Precipitation; Carbon dioxide; Land use; Trees; Respiration; Rainfall; Temperature; National parks; Vegetation; Biomass; Soil; Savannahs; Vegetation cover; Continents; Meteorology; Carbon; Ecosystems; Climates; Fluctuations; Carbon Dioxide; South Africa, Mpumalanga, Kruger Natl. Park; South Africa DO - http://dx.doi.org/10.1016/j.agrformet.2014.10.009 ER - TY - JOUR T1 - An investigation into the interactions of gold nanoparticles and anti-arthritic drugs with macrophages, and their reactivity towards thioredoxin reductase. AN - 1629588394; 25306263 AB - Gold(I) complexes are an important tool in the arsenal of established approaches for treating rheumatoid arthritis (RA), while some recent studies have suggested that gold nanoparticles (Au NPs) may also be therapeutically efficacious. These observations prompted the current biological studies involving gold(I) anti-RA agents and Au NPs, which are aimed towards improving our knowledge of how they work. The cytotoxicity of auranofin, aurothiomalate, aurothiosulfate and Au NPs towards RAW264.7 macrophages was evaluated using the MTT assay, with the former compound proving to be the most toxic. The extent of cellular uptake of the various gold agents was determined using graphite furnace atomic absorption spectrometry, while their distribution within macrophages was examined using microprobe synchrotron radiation X-ray fluorescence spectroscopy. The latter technique showed accumulation of gold in discrete regions of the cell, and co-localisation with sulfur in the case of cells treated with aurothiomalate or auranofin. Electrospray ionization mass spectrometry was used to characterize thioredoxin reductase (TrxR) in which the penultimate selenocysteine residue was replaced by cysteine. Mass spectra of solutions of TrxR and aurothiomalate, aurothiosulfate or auranofin showed complexes containing bare gold atoms bound to the protein, or protein adducts containing gold atoms retaining some of their initial ligands. These results support TrxR being an important target of gold(I) drugs used to treat RA, while the finding that Au NPs are incorporated into macrophages, but elicit little toxicity, indicates further exploration of their potential for treatment of RA is warranted. JF - Journal of inorganic biochemistry AU - James, Lloyd R A AU - Xu, Zhi-Qiang AU - Sluyter, Ronald AU - Hawksworth, Emma L AU - Kelso, Celine AU - Lai, Barry AU - Paterson, David J AU - de Jonge, Martin D AU - Dixon, Nicholas E AU - Beck, Jennifer L AU - Ralph, Stephen F AU - Dillon, Carolyn T AD - Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia. ; Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; School of Biological Sciences, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia. ; X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA. ; Australian Synchrotron, Clayton, VIC 3168, Australia. ; Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia. ; Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; School of Chemistry, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia. Electronic address: carolynd@uow.edu.au. Y1 - 2015/01// PY - 2015 DA - January 2015 SP - 28 EP - 38 VL - 142 KW - Gold Sodium Thiomalate KW - 12244-57-4 KW - Auranofin KW - 3H04W2810V KW - Gold KW - 7440-57-5 KW - Thioredoxin-Disulfide Reductase KW - EC 1.8.1.9 KW - Index Medicus KW - Macrophages KW - Rheumatoid arthritis KW - Gold nanoparticles KW - Thioredoxin reductase KW - Gold complexes KW - Auranofin -- metabolism KW - Spectrometry, X-Ray Emission -- methods KW - Spectrophotometry, Atomic -- methods KW - Gold Sodium Thiomalate -- toxicity KW - Auranofin -- toxicity KW - Spectrometry, Mass, Electrospray Ionization -- methods KW - Gold Sodium Thiomalate -- metabolism KW - Gold -- analysis KW - Metal Nanoparticles -- toxicity KW - Thioredoxin-Disulfide Reductase -- metabolism KW - Thioredoxin-Disulfide Reductase -- chemistry KW - Macrophages -- drug effects KW - Macrophages -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629588394?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+inorganic+biochemistry&rft.atitle=An+investigation+into+the+interactions+of+gold+nanoparticles+and+anti-arthritic+drugs+with+macrophages%2C+and+their+reactivity+towards+thioredoxin+reductase.&rft.au=James%2C+Lloyd+R+A%3BXu%2C+Zhi-Qiang%3BSluyter%2C+Ronald%3BHawksworth%2C+Emma+L%3BKelso%2C+Celine%3BLai%2C+Barry%3BPaterson%2C+David+J%3Bde+Jonge%2C+Martin+D%3BDixon%2C+Nicholas+E%3BBeck%2C+Jennifer+L%3BRalph%2C+Stephen+F%3BDillon%2C+Carolyn+T&rft.aulast=James&rft.aufirst=Lloyd+R&rft.date=2015-01-01&rft.volume=142&rft.issue=&rft.spage=28&rft.isbn=&rft.btitle=&rft.title=Journal+of+inorganic+biochemistry&rft.issn=1873-3344&rft_id=info:doi/10.1016%2Fj.jinorgbio.2014.09.013 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-07-03 N1 - Date created - 2014-12-01 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.jinorgbio.2014.09.013 ER - TY - JOUR T1 - Tunable and rapid self-assembly of block copolymers using mixed solvent vapors. AN - 1627073031; 25380519 AB - Pattern generation of well-controlled block copolymers (BCPs) with a high Flory-Huggins interaction parameter (χ) is important for applications in sub-20 nm nanolithography. We used mixed solvents of dimethylformamide (DMF) and toluene to control the morphology as well as the time to achieve the targeted morphology via self-assembly of BCPs. By precisely controlling the volume ratio of DMF and toluene, well-ordered line, honeycomb, circular hole, and lamellar nanostructures were obtained from a cylinder-forming poly(styrene-b-2-vinylpyridine) (PS-b-P2VP) BCP with high χ. Furthermore, a well-aligned 12 nm line pattern was successfully achieved in the guiding template within one minute using the mixed solvents. This practical method may also be applicable to self-assembly of other BCPs, providing more opportunities for the next-generation sub-10 nm lithography applications. JF - Nanoscale AU - Park, Woon Ik AU - Tong, Sheng AU - Liu, Yuzi AU - Jung, Il Woong AU - Roelofs, Andreas AU - Hong, Seungbum AD - Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA. hong@anl.gov. Y1 - 2014/12/21/ PY - 2014 DA - 2014 Dec 21 SP - 15216 EP - 15221 VL - 6 IS - 24 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627073031?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nanoscale&rft.atitle=Tunable+and+rapid+self-assembly+of+block+copolymers+using+mixed+solvent+vapors.&rft.au=Park%2C+Woon+Ik%3BTong%2C+Sheng%3BLiu%2C+Yuzi%3BJung%2C+Il+Woong%3BRoelofs%2C+Andreas%3BHong%2C+Seungbum&rft.aulast=Park&rft.aufirst=Woon&rft.date=2014-12-21&rft.volume=6&rft.issue=24&rft.spage=15216&rft.isbn=&rft.btitle=&rft.title=Nanoscale&rft.issn=2040-3372&rft_id=info:doi/10.1039%2Fc4nr04726e LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-05-28 N1 - Date created - 2014-11-21 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1039/c4nr04726e ER - TY - JOUR T1 - Differentiating allotropic LiCoO sub(2)/Li sub(2)Co sub(2)O sub(4): A structural and electrochemical study AN - 1627978359; 20888722 AB - In situ high-energy X-ray diffraction was carried out to investigate the structural transformation of lithium cobalt oxides during the solid-state synthesis. Two allotropic phases were observed during the synthesis process; Li sub(2)Co sub(2)O sub(4) with a spinel structure was formed within the temperature window between 450 [degrees]C and 650 [degrees]C, beyond which Li sub(2)Co sub(2)O sub(4) was converted to its hexagonal counterpart, layered LiCoO sub(2), through a cation exchange between Li and Co. In electrochemical tests, the Li sub(2)Co sub(2)O sub(4) was estimated to have a very low reversible capacity, ~20 mAh g super(-1), and a high initial irreversible capacity loss of about 80 mAh g super(-1). An interfacial phase between layered LiCoO sub(2) domain and spinel Li sub(2)Co sub(2)O sub(4) domain was also identified by ex situ high-resolution X-ray diffraction. JF - Journal of Power Sources AU - Kan, Yongchun AU - Hu, Yuan AU - Ren, Yang AU - Bareno, Javier AU - Bloom, Ira AU - Sun, Yang-Kook AU - Amine, Khalil AU - Chen, Zonghai AD - State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, PR China; Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL 60439, USA, zonghai.chen@anl.gov Y1 - 2014/12/20/ PY - 2014 DA - 2014 Dec 20 SP - 97 EP - 103 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 271 SN - 0378-7753, 0378-7753 KW - Environment Abstracts KW - Allotropic structure KW - Lithium cobalt oxide KW - Structure property relationship KW - Cation mixing KW - Lithium battery KW - Cations KW - Cobalt KW - Temperature KW - Electrochemistry KW - X-ray diffraction KW - Lithium KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627978359?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=Differentiating+allotropic+LiCoO+sub%282%29%2FLi+sub%282%29Co+sub%282%29O+sub%284%29%3A+A+structural+and+electrochemical+study&rft.au=Kan%2C+Yongchun%3BHu%2C+Yuan%3BRen%2C+Yang%3BBareno%2C+Javier%3BBloom%2C+Ira%3BSun%2C+Yang-Kook%3BAmine%2C+Khalil%3BChen%2C+Zonghai&rft.aulast=Kan&rft.aufirst=Yongchun&rft.date=2014-12-20&rft.volume=271&rft.issue=&rft.spage=97&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2014.07.178 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-01 N1 - Last updated - 2015-04-16 N1 - SubjectsTermNotLitGenreText - Cations; Cobalt; Temperature; X-ray diffraction; Electrochemistry; Lithium DO - http://dx.doi.org/10.1016/j.jpowsour.2014.07.178 ER - TY - JOUR T1 - Hidden carbon in Earth's inner core revealed by shear softening in dense Fe (sub 7) C (sub 3) AN - 1832675897; 768410-2 JF - Proceedings of the National Academy of Sciences of the United States of America AU - Chen, Bin AU - Li, Zeyu AU - Zhang, Dongzhou AU - Liu, Jiachao AU - Hu, Michael Y AU - Zhao, Jiyong AU - Bi, Wenli AU - Alp, E Ercan AU - Xiao, Yuming AU - Chow, Paul AU - Li, Jie Y1 - 2014/12/16/ PY - 2014 DA - 2014 Dec 16 SP - 17755 EP - 17758 PB - National Academy of Sciences, Washington, DC VL - 111 IS - 50 SN - 0027-8424, 0027-8424 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832675897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.atitle=Hidden+carbon+in+Earth%27s+inner+core+revealed+by+shear+softening+in+dense+Fe+%28sub+7%29+C+%28sub+3%29&rft.au=Chen%2C+Bin%3BLi%2C+Zeyu%3BZhang%2C+Dongzhou%3BLiu%2C+Jiachao%3BHu%2C+Michael+Y%3BZhao%2C+Jiyong%3BBi%2C+Wenli%3BAlp%2C+E+Ercan%3BXiao%2C+Yuming%3BChow%2C+Paul%3BLi%2C+Jie&rft.aulast=Chen&rft.aufirst=Bin&rft.date=2014-12-16&rft.volume=111&rft.issue=50&rft.spage=17755&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+National+Academy+of+Sciences+of+the+United+States+of+America&rft.issn=00278424&rft_id=info:doi/10.1073%2Fpnas.1411154111 L2 - http://www.pnas.org/content/by/year LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. N1 - Number of references - 39 N1 - PubXState - DC N1 - Last updated - 2017-01-24 DO - http://dx.doi.org/10.1073/pnas.1411154111 ER - TY - CPAPER T1 - Variations in the Horizontal and Vertical Distributions of Organic Carbon Stocks across Ice Wedge Polygons of Arctic Alaska T2 - 47th American Geophysical Union Fall Meeting AN - 1651742228; 6330978 JF - 47th American Geophysical Union Fall Meeting AU - Jastrow, Julie AU - Ping, Chien-Lu AU - Matamala, Roser AU - Vugteveen, Timothy AU - Lederhouse, Jeremy AU - Michaelson, Gary Y1 - 2014/12/15/ PY - 2014 DA - 2014 Dec 15 KW - USA, Alaska KW - Vertical distribution KW - Ice KW - Horizontal distribution KW - Organic carbon KW - Polar environments KW - Arctic UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1651742228?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=47th+American+Geophysical+Union+Fall+Meeting&rft.atitle=Variations+in+the+Horizontal+and+Vertical+Distributions+of+Organic+Carbon+Stocks+across+Ice+Wedge+Polygons+of+Arctic+Alaska&rft.au=Jastrow%2C+Julie%3BPing%2C+Chien-Lu%3BMatamala%2C+Roser%3BVugteveen%2C+Timothy%3BLederhouse%2C+Jeremy%3BMichaelson%2C+Gary&rft.aulast=Jastrow&rft.aufirst=Julie&rft.date=2014-12-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=47th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://agu.confex.com/agu/fm14/meetingapp.cgi#ModuleSessionsByDay/0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-31 N1 - Last updated - 2015-02-06 ER - TY - CPAPER T1 - Transport of Mass and Water Vapor in Cumulus Topped Boundary Layer: A Case-Study from Arm Darwin Facility T2 - 47th American Geophysical Union Fall Meeting AN - 1651741923; 6333899 JF - 47th American Geophysical Union Fall Meeting AU - Ghate, Virendra AU - Jensen, Michael Y1 - 2014/12/15/ PY - 2014 DA - 2014 Dec 15 KW - Clouds KW - Water vapor KW - Boundary layers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1651741923?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=47th+American+Geophysical+Union+Fall+Meeting&rft.atitle=Transport+of+Mass+and+Water+Vapor+in+Cumulus+Topped+Boundary+Layer%3A+A+Case-Study+from+Arm+Darwin+Facility&rft.au=Ghate%2C+Virendra%3BJensen%2C+Michael&rft.aulast=Ghate&rft.aufirst=Virendra&rft.date=2014-12-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=47th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://agu.confex.com/agu/fm14/meetingapp.cgi#ModuleSessionsByDay/0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-31 N1 - Last updated - 2015-02-06 ER - TY - CPAPER T1 - Multi-scale and Multi-modal Analysis of Metamorphic Rocks Coupling Fluorescence and TXM Techniques T2 - 47th American Geophysical Union Fall Meeting AN - 1651737423; 6329359 JF - 47th American Geophysical Union Fall Meeting AU - De Andrade, Vincent AU - Gursoy, Doga AU - Wojcik, Michael AU - DeCarlo, Francesco AU - Ganne, Jerome AU - Dubacq, Benoit Y1 - 2014/12/15/ PY - 2014 DA - 2014 Dec 15 KW - Metamorphic rocks KW - Fluorescence UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1651737423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=47th+American+Geophysical+Union+Fall+Meeting&rft.atitle=Multi-scale+and+Multi-modal+Analysis+of+Metamorphic+Rocks+Coupling+Fluorescence+and+TXM+Techniques&rft.au=De+Andrade%2C+Vincent%3BGursoy%2C+Doga%3BWojcik%2C+Michael%3BDeCarlo%2C+Francesco%3BGanne%2C+Jerome%3BDubacq%2C+Benoit&rft.aulast=De+Andrade&rft.aufirst=Vincent&rft.date=2014-12-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=47th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - https://agu.confex.com/agu/fm14/meetingapp.cgi#ModuleSessionsByDay/0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-01-31 N1 - Last updated - 2015-02-06 ER - TY - JOUR T1 - Status of hydrogen fuel cell electric buses worldwide AN - 1642309705; 20842660 AB - This review summarizes the background and recent status of the fuel cell electric bus (FCEB) demonstration projects in North America and Europe. Key performance metrics include accumulated miles, availability, fuel economy, fuel cost, roadcalls, and hydrogen fueling. The state-of-the-art technology used in today's fuel cell bus is highlighted. Existing hydrogen infrastructure for refueling is described. The article also presents the challenges encountered in these projects, the experiences learned, as well as current and future performance targets. JF - Journal of Power Sources AU - Hua, Thanh AU - Ahluwalia, Rajesh AU - Eudy, Leslie AU - Singer, Gregg AU - Jermer, Boris AU - Asselin-Miller, Nick AU - Wessel, Silvia AU - Patterson, Timothy AU - Marcinkoski, Jason AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA hua@anl.gov Y1 - 2014/12/10/ PY - 2014 DA - 2014 Dec 10 SP - 975 EP - 993 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 269 SN - 0378-7753, 0378-7753 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Fuel cell electric bus KW - Fuel cell technology KW - Hydrogen refueling KW - Hydrogen infrastructure KW - Public transportation KW - Cost engineering KW - Refueling KW - Fuel consumption KW - Availability KW - Fuel cells KW - Performance measurement KW - State of the art KW - Buses (vehicles) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1642309705?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=Status+of+hydrogen+fuel+cell+electric+buses+worldwide&rft.au=Hua%2C+Thanh%3BAhluwalia%2C+Rajesh%3BEudy%2C+Leslie%3BSinger%2C+Gregg%3BJermer%2C+Boris%3BAsselin-Miller%2C+Nick%3BWessel%2C+Silvia%3BPatterson%2C+Timothy%3BMarcinkoski%2C+Jason&rft.aulast=Hua&rft.aufirst=Thanh&rft.date=2014-12-10&rft.volume=269&rft.issue=&rft.spage=975&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2014.06.055 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-12-01 N1 - Last updated - 2015-05-04 DO - http://dx.doi.org/10.1016/j.jpowsour.2014.06.055 ER - TY - JOUR T1 - Transport of oxygen in soil pore-water systems: implications for modeling emissions of carbon dioxide and methane from peatlands AN - 1798740206; 21031467 AB - Peatlands store vast amounts of soil carbon and are significant sources of greenhouse gases, including carbon dioxide (CO sub(2)) and methane (CH sub(4)) emissions. The traditional approach in biogeochemical model simulations of peatland emissions is to simply divide the soil domain into an aerobic zone above and an anaerobic zone below the water table (WT) and then calculate CO sub(2) and CH sub(4) emissions based on the assumed properties of these two discrete zones. However, there are major potential drawbacks associated with the traditional WT-based approach, because aerobic or anaerobic environments are ultimately determined by oxygen (O sub(2)) concentration rather than water content directly. Variations in O sub(2) content above and below the WT can be large and thus may play an important role in partitioning of carbon fluxes between CO sub(2) and CH sub(4). In this paper, we propose an oxygen-based approach, which simulates the vertical and radial components of O sub(2) movement and consumption through the soil aerobic and anaerobic environments. We then use both our oxygen-based and the traditional WT-based approaches to simulate CO sub(2) and CH sub(4) emissions from an Alaskan fen peatland. The results of model calibration and validation suggest that our physically realistic approach (i.e., oxygen-based approach) cause less biases on the simulated flux of CO sub(2) and CH sub(4). The results of model simulations also suggest that the traditional WT-based approach might substantially under-estimate CH sub(4) emissions and over-estimate CO sub(2) emissions from the fen due to the presence of anaerobic zones in unsaturated soil. Our oxygen-based approach can be easily incorporated into existing ecosystem or earth system models but will require additional validation with more extensive field observations to be implemented within biogeochemical models to improve simulations of soil C fluxes at regional or global scale. JF - Biogeochemistry AU - Fan, Zhaosheng AU - Neff, Jason C AU - Waldrop, Mark P AU - Ballantyne, Ashley P AU - Turetsky, Merritt R AD - Biosciences Division, Argonne National Laboratory, Argonne, IL, 60439, USA, zfan@anl.gov Y1 - 2014/12// PY - 2014 DA - December 2014 SP - 455 EP - 470 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 121 IS - 3 SN - 0168-2563, 0168-2563 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Methane KW - Ecosystems KW - Biogeochemistry KW - Biogeochemical cycle KW - Carbon cycle KW - Greenhouse effect KW - Model Studies KW - Oxygen KW - Carbon KW - Calibrations KW - Soils KW - Carbon dioxide KW - Fluctuations KW - Carbon Dioxide KW - Modelling KW - Q2 09262:Methods and instruments KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1798740206?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biogeochemistry&rft.atitle=Transport+of+oxygen+in+soil+pore-water+systems%3A+implications+for+modeling+emissions+of+carbon+dioxide+and+methane+from+peatlands&rft.au=Fan%2C+Zhaosheng%3BNeff%2C+Jason+C%3BWaldrop%2C+Mark+P%3BBallantyne%2C+Ashley+P%3BTuretsky%2C+Merritt+R&rft.aulast=Fan&rft.aufirst=Zhaosheng&rft.date=2014-12-01&rft.volume=121&rft.issue=3&rft.spage=455&rft.isbn=&rft.btitle=&rft.title=Biogeochemistry&rft.issn=01682563&rft_id=info:doi/10.1007%2Fs10533-014-0012-0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-06-01 N1 - Number of references - 66 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Methane; Carbon; Biogeochemical cycle; Biogeochemistry; Soils; Carbon cycle; Greenhouse effect; Carbon dioxide; Modelling; Oxygen; Ecosystems; Calibrations; Fluctuations; Model Studies; Carbon Dioxide DO - http://dx.doi.org/10.1007/s10533-014-0012-0 ER - TY - JOUR T1 - Layered P2/O3 Intergrowth Cathode: Toward High Power Na-Ion Batteries AN - 1770272873; 21146935 AB - Novel layered P2/O3 intergrowth Na sub(1-x)Li sub(x) -Ni sub(0.5)Mn sub(0.5)O sub(2) cathodes show high-rate performance for sodium-ion batteries. The good electrochemical properties are attributed to the synergistic effect of an intergrowth structure that results from the direct incorporation of Li in the matrix. This finding highlights the importance of multiphase intergrowths with orientation relationships that can attain performance for future optimized sodium-ion batteries. JF - Advanced Energy Materials AU - Lee, Eungje AU - Lu, Jun AU - Ren, Yang AU - Luo, Xiangyi AU - Zhang, Xiaoyi AU - Wen, Jianguo AU - Miller, Dean AU - DeWahl, Aaron AU - Hackney, Stephen AU - Key, Baris AU - Kim, Donghan AU - Slater, Michael D AU - Johnson, Christopher S AD - Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL, 60439, USA. Y1 - 2014/12// PY - 2014 DA - December 2014 SP - [np] PB - Wiley-Blackwell, Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 4 IS - 17 SN - 1614-6832, 1614-6832 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); ANTE: Abstracts in New Technologies and Engineering (AN); Aerospace & High Technology Database (AH) KW - Rechargeable batteries KW - Cathodes KW - Multiphase KW - Synergistic effect KW - Orientation relationships KW - Electrochemical analysis KW - Yes:(AN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770272873?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Advanced+Energy+Materials&rft.atitle=Layered+P2%2FO3+Intergrowth+Cathode%3A+Toward+High+Power+Na-Ion+Batteries&rft.au=Lee%2C+Eungje%3BLu%2C+Jun%3BRen%2C+Yang%3BLuo%2C+Xiangyi%3BZhang%2C+Xiaoyi%3BWen%2C+Jianguo%3BMiller%2C+Dean%3BDeWahl%2C+Aaron%3BHackney%2C+Stephen%3BKey%2C+Baris%3BKim%2C+Donghan%3BSlater%2C+Michael+D%3BJohnson%2C+Christopher+S&rft.aulast=Lee&rft.aufirst=Eungje&rft.date=2014-12-01&rft.volume=4&rft.issue=17&rft.spage=%5Bnp%5D&rft.isbn=&rft.btitle=&rft.title=Advanced+Energy+Materials&rft.issn=16146832&rft_id=info:doi/10.1002%2Faenm.201400458 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Last updated - 2016-03-04 DO - http://dx.doi.org/10.1002/aenm.201400458 ER - TY - JOUR T1 - The community-driven BiG CZ software system for integration and analysis of bio- and geoscience data in the critical zone AN - 1765874013; 2016-011927 AB - Here we present the prototypes of a new scientific software system designed around the new Observations Data Model version 2.0 (ODM2, https://github.com/UCHIC/ODM2) to substantially enhance integration of biological and Geological (BiG) data for Critical Zone (CZ) science. The CZ science community takes as its charge the effort to integrate theory, models and data from the multitude of disciplines collectively studying processes on the Earth's surface. The central scientific challenge of the CZ science community is to develop a "grand unifying theory" of the critical zone through a theory-model-data fusion approach, for which the key missing need is a cyberinfrastructure for seamless 4D visual exploration of the integrated knowledge (data, model outputs and interpolations) from all the bio and geoscience disciplines relevant to critical zone structure and function, similar to today's ability to easily explore historical satellite imagery and photographs of the Earth's surface using Google Earth. This project takes the first "BiG" steps toward answering that need. The overall goal of this project is to co-develop with the CZ science and broader community, including natural resource managers and stakeholders, a Web-based integration and visualization environment for joint analysis of cross-scale bio and geoscience processes in the critical zone (BiG CZ), spanning experimental and observational designs. We will: (1) Engage the CZ and broader community to co-develop and deploy the BiG CZ software stack; (2) Develop the BiG CZ Portal web application for intuitive, high-performance map-based discovery, visualization, access and publication of data by scientists, resource managers, educators and the general public; (3) Develop the BiG CZ Toolbox to enable cyber-savvy CZ scientists to access BiG CZ Application Programming Interfaces (APIs); and (4) Develop the BiG CZ Central software stack to bridge data systems developed for multiple critical zone domains into a single metadata catalog. The entire BiG CZ Software system is being developed on public repositories as a modular suite of open source software projects. It will be built around a new Observations Data Model Version 2.0 (ODM2) that has been developed by members of the BiG CZ project team, with community input, under separate funding. JF - American Geophysical Union Fall Meeting AU - Aufdenkampe, A K AU - Mayorga, E AU - Horsburgh, J S AU - Lehnert, K A AU - Zaslavsky, I AU - Valentine, D W, Jr AU - Richard, S M AU - Cheetham, R AU - Meyer, F AU - Henry, C AU - Berg-Cross, G AU - Packman, A I AU - Aronson, E L AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract IN41A EP - 3649 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765874013?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+community-driven+BiG+CZ+software+system+for+integration+and+analysis+of+bio-+and+geoscience+data+in+the+critical+zone&rft.au=Aufdenkampe%2C+A+K%3BMayorga%2C+E%3BHorsburgh%2C+J+S%3BLehnert%2C+K+A%3BZaslavsky%2C+I%3BValentine%2C+D+W%2C+Jr%3BRichard%2C+S+M%3BCheetham%2C+R%3BMeyer%2C+F%3BHenry%2C+C%3BBerg-Cross%2C+G%3BPackman%2C+A+I%3BAronson%2C+E+L%3BAnonymous&rft.aulast=Aufdenkampe&rft.aufirst=A&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-02-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Equation of state and spin transition of (Mg, Fe)O at high pressures AN - 1765873942; 2016-011985 AB - Earth's lower mantle occupies more than half of Earth's volume, and is composed primarily of bridgmanites and (Mg,Fe)O "ferropericlase." Knowledge of the behavior of lower mantle minerals is essential for interpreting complexity in the deep Earth. Although it is suggested that (Mg,Fe)O represents a major volume fraction of Earth's interior, the iron concentration of (Mg,Fe)O is not very well constrained at all depths of the lower mantle. Near the base of the lower mantle, an enhanced iron content may be found due to melting events in Earth's history and/or reactions with the iron-dominant liquid outer core. Here we examine the high-pressure behavior of polycrystalline (Mg,Fe)O containing 48 mol% FeO ("FP48"), loaded hydrostatically with neon as a pressure medium. Using x-ray diffraction and synchrotron Mossbauer spectroscopy we measure the equation of state of FP48 to about 80 GPa at 300 K and hyperfine parameters to 100 GPa at 300 K, respectively. A gradual volume drop is observed between approximately 55 and 75 GPa. To confirm that the observed volume drop is due to a spin crossover, the quadrupole splitting (QS) and isomer shift (IS) of Fe2+ are determined as a function of pressure. At low pressures, our spectra are fitted with two Fe (super 2+) -like sites. At pressures between 43 and 81 GPa, an additional Fe (super 2+) -like site with a QS of 0 is required, indicative of low-spin iron. Above 93 GPa, two low-spin Fe (super 2+) -like sites explain the data well, signifying the completion of the spin crossover. Using a spin crossover equation of state, we have determined the volume drop at the calculated transition pressure and the relevant elastic properties of FP48. Our results are compared to previous measurements of (Mg,Fe)O with varying concentrations of iron at high pressures. JF - American Geophysical Union Fall Meeting AU - Solomatova, N V AU - Jackson, J M AU - Sturhahn, Wolfgang AU - Zhao, J AU - Toellner, T AU - Kalkan, B AU - Wicks, J K AU - Steinhardt, W AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR41A EP - 4376 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765873942?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Equation+of+state+and+spin+transition+of+%28Mg%2C+Fe%29O+at+high+pressures&rft.au=Solomatova%2C+N+V%3BJackson%2C+J+M%3BSturhahn%2C+Wolfgang%3BZhao%2C+J%3BToellner%2C+T%3BKalkan%2C+B%3BWicks%2C+J+K%3BSteinhardt%2C+W%3BAnonymous&rft.aulast=Solomatova&rft.aufirst=N&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-02-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Real time pore structure evolution during olivine mineral carbonation AN - 1765873417; 2016-012348 AB - Aqueous carbonation of ultramafic rocks has been proposed as a promising method for long-term, secure sequestration of carbon dioxide. While chemical kinetics data indicate that carbonation reaction in olivine is one of the fastest among the mg-bearing minerals, in practice, the factors that limit the extent and rate of carbonation in ultramafic rocks are fluid supply and flux. On the one hand, reaction products could produce passivating layer that prohibits further reactions. On the other hand, the increases in solid volume during carbonation could lead to cracking and create new fluid paths. Whether carbonation in ultramafic rocks is self-limiting or self-sustaining has been hotly debated. Experimental evidence of precipitation of reaction products during olivine carbonation was reported. To date, reaction-driven cracking has not been observed. In this paper, we present the first real-time pore structure evolution data using the x-ray synchrotron microtomography. Sodium bicarbonate (NaHCO3) solution was injected into porous olivine aggregates and in-situ pore structure change during olivine carbonation at a constant confining pressure (12 MPa) and a temperature of 200oC was captured at 30 min. interval for nearly equal 160 hours. Shortly after the experiment started, filling-in of the existing pores by precipitation of reaction products was visible. The size of the in-fills kept increasing as reactions continued. After nearly equal 48 hours, cracking around the in-fill materials became visible. After nearly equal 60 hours, these cracks started to show a clear polygonal pattern, similar to the crack patterns usually seen on the surface of drying mud. After nearly equal 72 hours, some of the cracks coalesced into large fractures that cut-through the olivine aggregates. New fractures continued to develop and at the end of the experiment, the sample was completely disintegrated by these fractures. We also conducted nanotomography experiments on a sub-volume of the reacted olivine aggregate. Orthogonal sets of incipient cracks were observed, providing clear evidence that these cracks are generated by isotropic tensile stresses. This strongly indicates that the observed cracking was caused by volume expansion during mineral carbonation. The experimental results provide a mechanism for near 100% alteration of ultramafic rocks observed in nature. JF - American Geophysical Union Fall Meeting AU - Zhu, W AU - Fusseis, F AU - Lisabeth, H P AU - Xiao, X AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract V52A EP - 08 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765873417?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Real+time+pore+structure+evolution+during+olivine+mineral+carbonation&rft.au=Zhu%2C+W%3BFusseis%2C+F%3BLisabeth%2C+H+P%3BXiao%2C+X%3BAnonymous&rft.aulast=Zhu&rft.aufirst=W&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-02-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Controls of P-T-X-fO2 on iron isotopic fractionation in igneous rocks AN - 1765873375; 2016-012349 AB - Studies of the stable isotopic composition of Earth's mantle for major rock-forming elements other than oxygen are rapidly expanding to new elements but much uncertainty remains as to what those measurements have to tell about the evolution of our planet. Iron is particularly interesting because it possess three oxidation states (metallic Fe0, ferrous Fe2+, and ferric Fe3+) that were partially separated during core formation and crust extraction. We have used the synchrotron technique of NRIXS to measure the mean force constant of iron bonds in geologically relevant silicate glasses, olivine and spinels. The mean force constant directly controls equilibrium isotopic fractionation at high temperature. The Fe force constant measured in these glasses increases linearly with Fe3+/Fetot ratio measured by conventional Moessbauer spectroscopy. The NRIXS results reveal a 0.2 to 0.4 permil equilibrium fractionation on 56Fe/54Fe ratio between Fe2+ and Fe3+ end-members in basalt, andesite, dacite glasses and spinels at magmatic temperatures. For reference, iron isotopic analyses routinely achieve precisions better than + or -0.03 permil. Water saturation and pressure up to 9 GPa do not affect the force constants significantly. Structural changes and potential anharmonicity effects will be evaluated in the future by measuring samples at higher temperature. Our results demonstrate for the first time that stable isotope variations of Fe, and of possibly other heterovalent elements such as Ti, V Eu, Cr, Ce, or U, record redox and structural changes in igneous rocks. JF - American Geophysical Union Fall Meeting AU - Dauphas, N AU - Roskosz, Mathieu AU - Alp, E E AU - Neuville, D R AU - Hu, M Y AU - Sio, C K I AU - Tissot, F AU - Zhao, J AU - Tissandier, L AU - Medard, E AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract V52B EP - 01 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765873375?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Controls+of+P-T-X-fO2+on+iron+isotopic+fractionation+in+igneous+rocks&rft.au=Dauphas%2C+N%3BRoskosz%2C+Mathieu%3BAlp%2C+E+E%3BNeuville%2C+D+R%3BHu%2C+M+Y%3BSio%2C+C+K+I%3BTissot%2C+F%3BZhao%2C+J%3BTissandier%2C+L%3BMedard%2C+E%3BAnonymous&rft.aulast=Dauphas&rft.aufirst=N&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-02-18 N1 - CODEN - #07548 ER - TY - JOUR T1 - Three-dimensional simulation on behavior of water film flow with and without shear stress on water-air interface AN - 1762369557; PQ0002441255 AB - In this paper, the simulations of falling film behavior on a flat plate with and without interfacial gas-liquid shear stress were carried out. A three-dimensional numerical model was established based on film flow characteristics. A source term was implanted into the numerical model to take into account the interfacial gas-liquid shear stress. The model was validated by the experimental data. Both continuous film flow and film breakup were simulated. The film thickness, velocity distribution and wall shear stress at different Reynolds numbers were presented to understand the film flow behavior comprehensively. The influence of water-air shear stress on film flow behavior was revealed. A reasonable prediction on both MWR (Minimum Wetting Rate: [Delta] sub(min)) and MLFT (Minimum Liquid Film Thickness: [Gamma] sub(min)) were obtained. The model proposed in this study ought to be profitable for studies on mechanism of film breakup. JF - International Journal of Heat and Mass Transfer AU - Yu, Y Q AU - Cheng, X AD - School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Nuclear Engineering Division, Argonne National Laboratory, Lemont, IL 60439, United States, yyu@anl.gov Y1 - 2014/12// PY - 2014 DA - December 2014 SP - 561 EP - 572 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 79 SN - 0017-9310, 0017-9310 KW - Environment Abstracts KW - Falling film |a MeSH KW - Solitary wave |a MeSH KW - Flat plate |a MeSH KW - MWR |a MeSH KW - MLFT |a MeSH KW - Prediction KW - Mathematical models KW - Behavior KW - Simulation KW - Velocity KW - ENA 08:International UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762369557?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Heat+and+Mass+Transfer&rft.atitle=Three-dimensional+simulation+on+behavior+of+water+film+flow+with+and+without+shear+stress+on+water-air+interface&rft.au=Yu%2C+Y+Q%3BCheng%2C+X&rft.aulast=Yu&rft.aufirst=Y&rft.date=2014-12-01&rft.volume=79&rft.issue=&rft.spage=561&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Heat+and+Mass+Transfer&rft.issn=00179310&rft_id=info:doi/10.1016%2Fj.ijheatmasstransfer.2014.08.035 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Number of references - 38 N1 - Last updated - 2016-02-29 N1 - SubjectsTermNotLitGenreText - Prediction; Mathematical models; Behavior; Velocity; Simulation DO - http://dx.doi.org/10.1016/j.ijheatmasstransfer.2014.08.035 ER - TY - JOUR T1 - Management of Egypt's surface and groundwater resources; present and future AN - 1752578940; 2016-001434 AB - The River Nile is the main source of fresh water in Egypt. Most of Egypt's River Nile water (>85%) originates as precipitation over the Ethiopian highlands and is channeled by the Blue Nile. The construction (years: 2011 to 2017) of the Renaissance Dam (reservoir capacity: 70 x 109 m (super 3) ) on the Blue Nile poses an extreme threat to Egypt's population. If the reservoir was to be filled in 7 years, Egypt will lose (during each of 7 years following dam completion) a minimum of 15 109 m (super 3) of its annual allocation (55 X 109 m (super 3) ) to reservoir filling (10 X 109 m (super 3) ), evaporation (3.5 X 109 m (super 3) ), and infiltration (1.5 X 109 m (super 3) ). Three solutions are proposed: Solution I takes advantage of the cyclicity of Nile floods and is based on findings from a calibrated (against temporal head data) unconfined 2-dimensional transient groundwater flow model for Lake Nasser and surroundings and a calibrated (against lake levels) surface water model. Models show with time: (1) losses to infiltration will decrease (1975-193: 58.4 109 m (super 3) ; 1993-2001: 43.6 X 109 m (super 3) ) due to silting of Lake bottom and encroachment of excess Lake Nasser water will increase (e.g., 1975-1993: none; 1993-2001: 17 X 109 m (super 3) ). We propose to develop sustainable agricultural in the Western Desert: (1) In high flood years, excess Lake Nasser water (e.g., 1993-2001: 17 X 109 m (super 3) ) is channeled across the plateau bounding (from west) the River Nile valley to artificially recharge the Nubian Sandstone Aquifer System (NSAS) that crops out west of the plateau and, (2) in low flood years, we extract the recharged groundwater. Solution II calls on mining the NSAS at reasonable rates. Using temporal (January 2003 - September 2012) Gravity Recovery and Climate Experiment (GRACE) data we estimate the annual depletion rates at 2 X 10 (super 9) m (super 3) due to artificial extraction (1.5 X 10 (super 9) m (super 3) ) and natural discharge (0.5 X 10 (super 9) m (super 3) ). Assuming current GRACE depletion rates, the recoverable groundwater (5,180 X 10 (super 9) m (super 3) ) will last for 2500 years; if we were to quadruple the artificial extraction rates (6 X 10 (super 9) m3), the reservoir will last for some 800 years. Solution III calls on the sustainable utilization of the NSAS groundwater in Sinai that receives an estimated minimum annual modern recharge of 13 X 10 (super 6) m (super 3) . Currently, these waters are lost as discharge in water bodies and/or diverted across political boundaries by major NE trending fault systems. JF - American Geophysical Union Fall Meeting AU - Sultan, Mohamed AU - Ahmed, Mohamed AU - Yan, E AU - Milewski, A AU - Mohamed, L AU - Farag, A Z A AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract H41E EP - 0883 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752578940?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Management+of+Egypt%27s+surface+and+groundwater+resources%3B+present+and+future&rft.au=Sultan%2C+Mohamed%3BAhmed%2C+Mohamed%3BYan%2C+E%3BMilewski%2C+A%3BMohamed%2C+L%3BFarag%2C+A+Z+A%3BAnonymous&rft.aulast=Sultan&rft.aufirst=Mohamed&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2015-12-31 N1 - CODEN - #07548 ER - TY - JOUR T1 - Quantifying modern recharge to the Nubian Sandstone aquifer system; inferences from GRACE and land surface models AN - 1752577024; 2016-001135 AB - The Nubian Sandstone Aquifer System (NSAS) is shared by Egypt, Libya, Chad and Sudanand is one of the largest (area: approximately 2 X 106 km2) groundwater systems in the world. Despite its importance to the population of these countries, major hydrological parameters such as modern recharge and extraction rates remain poorly investigated given: (1) the large extent of the NSAS, (2) the absence of comprehensive monitoring networks, (3) the general inaccessibility of many of the NSAS regions, (4) difficulties in collecting background information, largely included in unpublished governmental reports, and (5) limited local funding to support the construction of monitoring networks and/or collection of field and background datasets. Data from monthly Gravity Recovery and Climate Experiment (GRACE) gravity solutions were processed (Gaussian smoothed: 100 km; rescaled) and used to quantify the modern recharge to the NSAS during the period from January 2003 to December 2012. To isolate the groundwater component in GRACE data, the soil moisture and river channel storages were removed using the outputs from the most recent Community Land Model version 4.5 (CLM4.5). GRACE-derived recharge calculations were performed over the southern NSAS outcrops (area: 835 X 103 km2) in Sudan and Chad that receive average annual precipitation of 65 km3 (77.5 mm). GRACE-derived recharge rates were estimated at 2.79 + or - 0.98 km3/yr (3.34 + or - 1.17 mm/yr). If we take into account the total annual extraction rates ( approximately 0.4 km3; CEDARE, 2002) from Chad and Sudan the average annual recharge rate for the NSAS could reach up to approximately 3.20 + or - 1.18 km3/yr (3.84 + or - 1.42 mm/yr). Our recharge rates estimates are similar to those calculated using (1) groundwater flow modeling in the Central Sudan Rift Basins (4-8 mm/yr; Abdalla, 2008), (2) WaterGAP global scale groundwater recharge model (< 5 mm/yr, Doell and Fiedler, 2008), and (3) chloride tracer in Sudan (3.05 mm/yr; Edmunds et al. 1988). Given the available global coverage of the temporal GRACE solutions for the past twelve years and plans are underway for the deployment of a GRACE follow-On and GRACE-II missions, we suggest that within the next few years, GRACE will probably become the most practical, informative, and cost-effective tool for monitoring the recharge of large aquifers across the globe. JF - American Geophysical Union Fall Meeting AU - Mohamed, A AU - Sultan, M AU - Ahmed, M AU - Yan, E AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract G23A EP - 0465 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577024?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Quantifying+modern+recharge+to+the+Nubian+Sandstone+aquifer+system%3B+inferences+from+GRACE+and+land+surface+models&rft.au=Mohamed%2C+A%3BSultan%2C+M%3BAhmed%2C+M%3BYan%2C+E%3BAnonymous&rft.aulast=Mohamed&rft.aufirst=A&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2015-12-31 N1 - CODEN - #07548 ER - TY - JOUR T1 - XMCD and magnetic evidence for cation reordering in synthetic Mg- and Al-substituted titanomagnetites AN - 1739085302; 2015-116872 AB - The titanomagnetite (TM) solid solution (Fe3-xTixO4, 0150 degrees C on timescales and at temperatures relevant to both geological and laboratory processes. Thus, the cation reordering has major implications for the acquisition, retention, and demagnetization of partial TRM and thermoviscous remanence and may have an impact on many paleomagnetic studies using natural TMs. JF - American Geophysical Union Fall Meeting AU - Lappe, Sophie C L L AU - Bowles, J AU - Jackson, M AU - Keavney, D AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract GP33B EP - 06 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739085302?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=XMCD+and+magnetic+evidence+for+cation+reordering+in+synthetic+Mg-+and+Al-substituted+titanomagnetites&rft.au=Lappe%2C+Sophie+C+L+L%3BBowles%2C+J%3BJackson%2C+M%3BKeavney%2C+D%3BAnonymous&rft.aulast=Lappe&rft.aufirst=Sophie+C+L&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-12-04 N1 - CODEN - #07548 ER - TY - JOUR T1 - Tau-adaptivity for nonsmooth processes in heterogeneous media AN - 1729849596; 2015-103879 AB - We propose a form of adaptivity based on FAS multigrid and related to the "frozen tau \tau technique proposed by Achi Brandt, allowing fine grid work to be avoided in regions with nearly-linear behavior, despite arbitrarily rough coefficients. We investigate indicators for reuse of tau \tau , practicality of dynamic load balancing, and experiment with localized plastic yielding in lithosphere dynamics. JF - American Geophysical Union Fall Meeting AU - Brown, J AU - Adams, M AU - Knepley, M AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract DI11A EP - 4256 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729849596?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Tau-adaptivity+for+nonsmooth+processes+in+heterogeneous+media&rft.au=Brown%2C+J%3BAdams%2C+M%3BKnepley%2C+M%3BAnonymous&rft.aulast=Brown&rft.aufirst=J&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Multi-scale and multi-modal analysis of metamorphic rocks coupling fluorescence and TXM techniques AN - 1729848759; 2015-106137 AB - Rocks are commonly polycrystalline systems presenting multi-scale chemical and structural heterogeneities inherited from crystallization processes or successive metamorphic events. Through different applications on metamorphic rocks involving fluorescence microprobes and full-field spectroscopy, one will illustrate how spatially resolved analytical techniques allow rock compositional variations to be related to large-scale geodynamic processes. Those examples also stress the importance of multi-modality instruments with zoom-in capability to study samples from mm to several mu m large fields of view, with micrometer down to sub-100 nanometer spatial resolutions. In this perspective, imaging capabilities offered by the new ultra-bright diffraction limited synchrotron sources will be described based on experimental data. At last, the new hard X-ray Transmission X-ray Microscope (TXM) at Sector 32 of the APS at Argonne National Laboratory, performing nano computed tomography with in situ capabilities will be presented. The instrument benefit from several R&D key activities like the fabrication of new zone plates in the framework of the Multi-Bend Achromat Lattice (MBA) upgrade at APS, or the development of powerful tomography reconstruction algorithms able to operate with a limited number of projections. JF - American Geophysical Union Fall Meeting AU - de Andrade, V J D AU - Gursoy, D AU - Wojcik, M AU - DeCarlo, F AU - Ganne, J AU - Dubacq, Benoit AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR13A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729848759?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Multi-scale+and+multi-modal+analysis+of+metamorphic+rocks+coupling+fluorescence+and+TXM+techniques&rft.au=de+Andrade%2C+V+J+D%3BGursoy%2C+D%3BWojcik%2C+M%3BDeCarlo%2C+F%3BGanne%2C+J%3BDubacq%2C+Benoit%3BAnonymous&rft.aulast=de+Andrade&rft.aufirst=V+J&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Signatures of the Toba super-volcano eruption in Borneo stalagmite geochemistry; a multi-proxy approach AN - 1729848508; 2015-104233 AB - Instrumental climate data, paleoclimate data, and climate models show that large volcanic eruptions cause significant global cooling by injecting reflective aerosols into the upper atmosphere, increasing planetary albedo (see Robock et al., 2000 and references therein). As such, these eruptions provide an empirical constraint on the relationship between radiative forcing and climatic response--a key uncertainty in numerical simulations of future climate change. However, the overall magnitude of a large eruption's climatic effects, and their regional expression, remain highly uncertain, and are the subject of heated debate in the peer-reviewed literature (Robock et al., 2005; Timmreck et al., 2009; Mann et al., 2012a, 2012b, 2013; Anchukaitis et al., 2012). As the largest eruption of the last 2 million years, the Toba eruption approximately 74 thousand years before present (kybp) on Sumatra presents an opportunity to probe the climatic responses associated with a massive perturbation to the Earth's radiative balance. Here we present trace metal as well as isotopic data from U/Th-dated stalagmites from Gunung Mulu National Park, in northern Borneo, across the Toba depth horizon. Previously published timeseries of stalagmite oxygen isotopes (Carolin et al., 2013) document a significant positive anomaly contemporaneous with the Toba super-eruption (interpreted as dry conditions at the site), but the degree to which Toba contributed to this anomaly has remained uncertain. We present new synchrotron-based micro x-ray fluorescence data showing the presence of distinct horizons in the Toba time interval with elevated concentrations of Fe, Mn, and Co, possibly indicating the presence of Toba ash in the samples. Working with an array of trace elements, we compare the stalagmite geochemistry in these horizons to the geochemistry of 1) distal ash samples from the Younger Toba Tuff (Smith et al., 2011), 2) clays isolated from the Gunung Mulu caves, and 3) depth horizons marked by brown layers and/or known hiatuses. We illustrate the promise of synchrotron-based fluorescence for identifying trace volcanic ash in stalagmites, with potentially broad applications in paleoclimate. JF - American Geophysical Union Fall Meeting AU - Cobb, K M AU - Chambers, L R AU - Longo, A AU - Ingall, E D AU - Moerman, J W AU - Carolin, S A AU - Meckler, A N AU - Adkins, J F AU - Finney, L AU - Lejau, S AU - Malang, J AU - Tuen, A AU - Pritchard, A AU - Smith, V AU - Vogt, S AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract PP31B EP - 1131 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729848508?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Signatures+of+the+Toba+super-volcano+eruption+in+Borneo+stalagmite+geochemistry%3B+a+multi-proxy+approach&rft.au=Cobb%2C+K+M%3BChambers%2C+L+R%3BLongo%2C+A%3BIngall%2C+E+D%3BMoerman%2C+J+W%3BCarolin%2C+S+A%3BMeckler%2C+A+N%3BAdkins%2C+J+F%3BFinney%2C+L%3BLejau%2C+S%3BMalang%2C+J%3BTuen%2C+A%3BPritchard%2C+A%3BSmith%2C+V%3BVogt%2C+S%3BAnonymous&rft.aulast=Cobb&rft.aufirst=K&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Disproportionation of (Mg,Fe)SiO (sub 3) perovskite and its implications to the dep Earth AN - 1729847249; 2015-106174 AB - Models of the Earth's deep interior have been built upon the basic assumption that the lower mantle down to the top of the D" layer mainly consists of orthorhombic perovskite (pv) with nominally 10 mol% Fe. However, seismic observations show enigmatic features in the deep lower mantle, such as, the sharp boundary on the top of the D" layer, the anticorrelations between VS and VP, the seismic anisotropy, and the existence of large low-shear-velocity provinces. The mineralogical constitution of the Earth's mantle is fundamental for understanding the geophysical and geochemical properties of this region. Our recent study using laser-heated diamond anvil cell technology coupled with synchrotron x-ray diffraction in-situ at high pressure-temperature and TEM studies of the quenched sample has demonstrated the disproportionation reaction of (Mg,Fe)SiO (sub 3) pv to a nearly Fe-free pv and an Fe-rich H-phase with a previously unknown hexagonal structure at 95 to 101 GPa and 2200 to 2400 K, thus fundamentally changing the geochemistry and geophysics of the bottom half of the lower mantle. We suggest that (Mg,Fe)SiO (sub 3) pv may not be the major silicate throughout the lower mantle down to the top of the D" layer. Instead, interpretations for key enigmatic features in the deep lower mantle require the knowledge of the three-phase P-T-x relationship of pv, ppv, and the H-phase. JF - American Geophysical Union Fall Meeting AU - Zhang, L AU - Meng, Y AU - Yang, W AU - Wang, Lin AU - Mao, W L AU - Zeng, Qiaoshi C AU - Jeong, J S AU - Wagner, A J AU - Mkhoyan, K A AU - Liu, W J AU - Xu, Ruxing AU - Mao, H K AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR22A EP - 03 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1729847249?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Disproportionation+of+%28Mg%2CFe%29SiO+%28sub+3%29+perovskite+and+its+implications+to+the+dep+Earth&rft.au=Zhang%2C+L%3BMeng%2C+Y%3BYang%2C+W%3BWang%2C+Lin%3BMao%2C+W+L%3BZeng%2C+Qiaoshi+C%3BJeong%2C+J+S%3BWagner%2C+A+J%3BMkhoyan%2C+K+A%3BLiu%2C+W+J%3BXu%2C+Ruxing%3BMao%2C+H+K%3BAnonymous&rft.aulast=Zhang&rft.aufirst=L&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-11-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sound velocities of iron-nickel and iron-nickel-silicon alloys at high pressure AN - 1722154469; 2015-097785 AB - Seismological and cosmochemical studies suggest Earth's core is primarily composed of iron with approximately 5 to 10 wt% nickel and some light elements. To date, the concentration of nickel and the amount and identity of light elements remain poorly constrained due in part to the difficulty of conducting experimental measurements at core conditions. The vibrational properties of a variety iron alloys paired with seismic observations can help better constrain the composition of the core. We directly measured the partial phonon density of states of bcc- and hcp-structured Fe (sub 0.9) Ni (sub 0.1) and Fe (sub 0.85) Ni (sub 0.1) Si0.05 at high pressures. The samples were compressed using a panoramic diamond anvil cell. A subset of the experiments were conducted using neon as a pressure transmitting medium. Measurements of high statistical quality were performed with nuclear resonant inelastic x-ray scattering (NRIXS) at sector 3-ID-B of the Advanced Photon Source. The unit cell volume of each sample was determined at each compression point with in-situ x-ray diffraction at sector 3-ID-B before and after each NRIXS measurement. The Debye, compressional, and shear sound velocities were determined from the low energy region of the partial phonon density of states paired with the volume measurements. We will present partial phonon density of states and sound velocities for Fe (sub 0.9) Ni (sub 0.1) and Fe (sub 0.85) Ni (sub 0.1) Si (sub 0.05) at high-pressure and compare with those of pure iron. JF - American Geophysical Union Fall Meeting AU - Miller, R A AU - Jackson, J M AU - Sturhahn, Wolgang AU - Zhao, J AU - Murphy, C A AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR31A EP - 4322 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154469?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Sound+velocities+of+iron-nickel+and+iron-nickel-silicon+alloys+at+high+pressure&rft.au=Miller%2C+R+A%3BJackson%2C+J+M%3BSturhahn%2C+Wolgang%3BZhao%2C+J%3BMurphy%2C+C+A%3BAnonymous&rft.aulast=Miller&rft.aufirst=R&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - The post-perovskite transition and mineralogical changes in the chemically heterogeneous lower mantle AN - 1722154187; 2015-097756 AB - The discovery of the post-perovskite transition in 2004 has made huge impact on our understanding on the structures and dynamics of the lowermost mantle. For the last 10 years, the post-perovskite transition has been related to major seismic structures in the region, including the D" discontinuity, the D" anisotropy, and the anti-correlation between the bulk sound speed and shear wave velocity. Whereas the post-perovskite phase appeared to provide a coherent framework to explain many of the major structures, more recent mineral physics studies have revealed that the compositional effects can be significant. High-resolution seismic imaging studies have reported complex structures which cannot be explained by the post-perovskite transition in chemically simple systems. Furthermore, recently proposed mineralogical changes in the lower mantle will affect the properties of post-perovskite and may provide alternative explanations for some seismic structures. In this talk, we will discuss the post-perovskite phase transition and other phase transitions in chemical heterogeneities in the lowermost mantle and their importance in understanding seismic structures. We will also report new data on the spin and oxidation state of iron in mantle silicate which can affect the post-perovskite transition. JF - American Geophysical Union Fall Meeting AU - Shim, S H D AU - Ye, Yu AU - Grocholski, B AU - Xu, S AU - Morgan, D AU - Zhao, J AU - Alp, E E AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR23D EP - 01 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154187?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=The+post-perovskite+transition+and+mineralogical+changes+in+the+chemically+heterogeneous+lower+mantle&rft.au=Shim%2C+S+H+D%3BYe%2C+Yu%3BGrocholski%2C+B%3BXu%2C+S%3BMorgan%2C+D%3BZhao%2C+J%3BAlp%2C+E+E%3BAnonymous&rft.aulast=Shim&rft.aufirst=S+H&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Melting of Fe and Fe (sub 0.9) Ni (sub 0.1) alloy at high pressures AN - 1722154147; 2015-097773 AB - Cosmochemical studies suggest that the cores of terrestrial planets are primarily composed of Fe alloyed with about 5 to 10 wt% Ni, plus some light elements (e.g., McDonough and Sun 1995). Thus, the high pressure melting curve of Fe (sub 0.9) Ni (sub 0.1) is considered to be an important reference for characterizing the cores of terrestrial planets. We have determined the melting points of fcc-structured Fe and Fe (sub 0.9) Ni (sub 0.1) up to 86 GPa using an in-situ method that monitors the atomic dynamics of the Fe atoms in the sample, synchrotron Mossbauer spectroscopy (Jackson et al. 2013). A laser heated diamond anvil cell is used to provide the high pressure-high temperature environmental conditions, and in-situ X-ray diffraction is used to constrain the pressure of the sample. To eliminate the influence of temperature fluctuations experienced by the sample on the determination of melting, we develop a Fast Temperature Readout (FasTeR) spectrometer. The FasTeR spectrometer features a fast reading rate (>100 Hz), a high sensitivity, a large dynamic range and a well-constrained focus. By combining the melting curve of fcc-structured Fe (sub 0.9) Ni (sub 0.1) alloy determined in our study and the fcc-hcp phase boundary from Komabayashi et al. (2012), we calculate the fcc-hcp-liquid triple point of Fe (sub 0.9) Ni (sub 0.1) . Using this triple point and the thermophysical parameters from a nuclear resonant inelastic X-ray scattering study on hcp-Fe (Murphy et al. 2011), we compute the melting curve of hcp-structured Fe (sub 0.9) Ni (sub 0.1) . We will discuss our new experimental results with implications for the cores of Venus, Earth and Mars. JF - American Geophysical Union Fall Meeting AU - Zhang, D AU - Jackson, J M AU - Zhao, J AU - Sturhahn, Wolfgang AU - Alp, E E AU - Hu, M Y AU - Toellner, T AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR31A EP - 4310 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154147?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Melting+of+Fe+and+Fe+%28sub+0.9%29+Ni+%28sub+0.1%29+alloy+at+high+pressures&rft.au=Zhang%2C+D%3BJackson%2C+J+M%3BZhao%2C+J%3BSturhahn%2C+Wolfgang%3BAlp%2C+E+E%3BHu%2C+M+Y%3BToellner%2C+T%3BAnonymous&rft.aulast=Zhang&rft.aufirst=D&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Understanding the sound velocities and EoS of Fe-Ni-Si alloys in the Earth's inner core through joint experimental measurements AN - 1722154051; 2015-097786 AB - Iron with with 5-10% nickel and a small amount of light element(s) has been suggested to be the major component of the Earth's core. The lattice preferred orientation of the Fe light element alloy may be responsible for observed seismic VP and VS anisotropies in the inner core. The alloying effects of nickel (a heavier element than iron) and silicon (a potential light element) on sound velocities and EoS parameters of Fe are thus of great importance to establish satisfactorily geophysical and geochemical models of the core. Here we have systematically investigated the density-velocity relation and elastic anisotropies of Fe, Fe-Si and Fe-Ni-Si alloys using combined results from in situ high energy resolution inelastic X-ray scattering (HERIX) (sensitive to VP), nuclear resonant inelastic X-ray scattering (NRIXS) (sensitive to VD and Vs), and X-ray diffraction (including radial X-ray diffraction) measurements in high-pressure diamond anvil cells at various temperatures. Our results also show that the measured density-velocity (rho -VP, -VD, or -VS) profiles of Fe, Fe-Si and Fe-Ni-Si alloys can be better fitted using an empirical power-law function, instead of a linear approximation, while a visibly temperature effect on the sound velocities is also observed. Fe and Fe-Si and Fe-Ni-Si alloys exhibits similar high-pressure density-velocity behavior via a constant density offset. With comparison to literature results, nickel seems to have less effect on compressional-wave velocity (VP) than on shear-wave velocity (VS), while silicon has a stronger effect on VP than VS. The measured apparent VP anisotropy of hcp-Fe at high pressures is comparable to the inner core VP anisotropy, which might be enhanced by Si substitution. Together with thermoelastic modeling, our results indicate that the Earth's inner core may contain about twice more light element(s) such as Si than previously thought, together with the presence of 10 at.% Ni, in order to match with the PREM seismic model. JF - American Geophysical Union Fall Meeting AU - Liu, Jin AU - Lin, J F AU - Alatas, A AU - Hu, M Y AU - Zhao, J AU - Dubrovinsky, Leonid S AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR31A EP - 4323 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722154051?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Understanding+the+sound+velocities+and+EoS+of+Fe-Ni-Si+alloys+in+the+Earth%27s+inner+core+through+joint+experimental+measurements&rft.au=Liu%2C+Jin%3BLin%2C+J+F%3BAlatas%2C+A%3BHu%2C+M+Y%3BZhao%2C+J%3BDubrovinsky%2C+Leonid+S%3BAnonymous&rft.aulast=Liu&rft.aufirst=Jin&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Sound velocities of iron carbides (Fe (sub 3) C and Fe (sub 7) C (sub 3) ) under core conditions AN - 1722153094; 2015-097783 AB - For a carbon-rich core, iron carbides might be the major phase crystallizing to form the Earth's solid inner core. On basis of high-pressure experiments and theoretical calculations, Fe (sub 3) C, Fe (sub 7) C (sub 3) and more recently Fe (sub 2) C have been considered as the most stable carbide phase under the inner core conditions. The identity of the stable carbide phase in a carbon-containing inner core is still a topic under active debate. It is crucial to determine the elastic and acoustic properties of the relevant carbide phases to core conditions, in order to test the carbon-rich core composition model. In this study, we have performed nuclear resonant inelastic X-ray scattering (NRIXS) measurements of both Fe (sub 7) C (sub 3) and Fe (sub 3) C up to core pressures at 300 K and determined their shear-wave (VS) and compressional-wave (VP) velocities for comparison with seismic observations of the inner core. The high-pressure magnetic properties of both phases have also been investigated by X-ray Emission Spectroscopy (XES) and Synchrotron Mossbauer Spectroscopy (SMS). Our results show that the magnetic transitions from ferromagnetic to paramagnetic and then to nonmagnetic in Fe (sub 7) C (sub 3) and Fe (sub 3) C significantly affects their VS and VP at high pressures. Extrapolating the sound velocities of the nonmagnetic phases to the inner core conditions, we found that sound velocities, particularly VS, of the iron carbides are markedly low comparing with iron and other iron-rich alloys, making them compelling candidates to explain the seismic observations of the inner core. Our hypothesis of a carbon-rich core may also be consistent with geochemical and petrological evidence on deep carbon inventory in Earth's interior. JF - American Geophysical Union Fall Meeting AU - Chen, Bin AU - Li, Ze AU - Zhang, D AU - Liu, Jia AU - Bi, W AU - Zhao, J AU - Alp, E E AU - Hu, M Y AU - Li, J AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract MR31A EP - 4320 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1722153094?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Sound+velocities+of+iron+carbides+%28Fe+%28sub+3%29+C+and+Fe+%28sub+7%29+C+%28sub+3%29+%29+under+core+conditions&rft.au=Chen%2C+Bin%3BLi%2C+Ze%3BZhang%2C+D%3BLiu%2C+Jia%3BBi%2C+W%3BZhao%2C+J%3BAlp%2C+E+E%3BHu%2C+M+Y%3BLi%2C+J%3BAnonymous&rft.aulast=Chen&rft.aufirst=Bin&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-15 N1 - CODEN - #07548 ER - TY - JOUR T1 - Controls on northern wetland methane emissions; insights from regional synthesis studies and the Alaska Peatland Experiment (APEX) AN - 1718052114; 2015-092661 AB - Wetlands are the largest natural source of atmospheric methane. Static chambers have been used to quantify variation in wetland CH4 flux for many decades. Regional to global scale synthesis studies of static chamber measurements show that relationships between temperature, water availability and CH4 emissions depend on wetland type (bog, fen, swamp), region (tropical, temperate, arctic) and disturbance. For example, while water table position and temperature serve as the dominant controls on bog and swamp CH4 flux, vegetation is an important control on emissions from fens. These studies highlight the fact that wetland types have distinct controls on CH4 emissions; however, it is unlikely that modeling of wetland CH4 flux will improve without a better mechanistic understanding of the processes underlying CH4 production, transport, and oxidation. At the Alaska Peatland Experiment, we are quantifying CH4 emission using static chambers, automated chambers, and towers. Our sites vary in permafrost regime, including groundwater fens without permafrost, forested peat plateaus with intact permafrost, and collapse scar bogs formed through permafrost thaw. Experimental studies that examine plant and microbial responses to altered water table position and soil temperature are complemented by a gradient approach, where we use a space-for-time substitutions to examine the consequences of thaw on time-scales of decades to centuries. Our results thus far have documented the importance of soil rewetting in governing large CH4 fluxes from northern wetland soils. Accounting for CH4, our collapse scar bog significantly contributed to the global warming potential of the landscape. A major objective of our work is to explore the role of permafrost C release in greenhouse gas fluxes from wetland soils, which we are assessing using radiocarbon as a natural tracer. We have shown, for example, that ebullition of CH4 is dominated by recently fixed C, but a significant fraction of CH4 in bubbles is derived from old C released during thaw. The APEX time series datasets are being used in a variety of modeling studies, from small-scale soil pore and microbial controls on gas production and transport to regional scale assessments of how carbon cycle feedbacks to climate vary with wetland type and abundance. JF - American Geophysical Union Fall Meeting AU - Turetsky, M R AU - Euskirchen, E S AU - Czimczik, C I AU - Waldrop, M P AU - Olefeldt, D AU - Fan, Z AU - Kane, E S AU - McGuire, A D AU - Harden, J W AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract B23H EP - 07 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718052114?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Controls+on+northern+wetland+methane+emissions%3B+insights+from+regional+synthesis+studies+and+the+Alaska+Peatland+Experiment+%28APEX%29&rft.au=Turetsky%2C+M+R%3BEuskirchen%2C+E+S%3BCzimczik%2C+C+I%3BWaldrop%2C+M+P%3BOlefeldt%2C+D%3BFan%2C+Z%3BKane%2C+E+S%3BMcGuire%2C+A+D%3BHarden%2C+J+W%3BAnonymous&rft.aulast=Turetsky&rft.aufirst=M&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Thermodynamic constraints on sulfate reduction and methanogenesis in a coalbed methane reservoir AN - 1718051533; 2015-092452 AB - In this study we consider how commercial natural gas production could affect sulfate reduction and methanogenesis in coal-bearing sediments of the Cherokee Basin, Kansas, USA. Controls on the activity of these two groups of microbes are important to understand because their activity and interactions may influence methane formation and retention in unconventional reservoirs. During November 2013, we collected water and gas samples from 16 commercial gas wells for geochemical and microbiological analysis. Results indicate that methane in the coalbeds formed biologically and that both methanogens and sulfate reducers are present. Gas samples consisted almost entirely of methane (C1/(C2+C3) = 2638 on avg.) and the delta D and delta 13C of methane averaged -222 ppm VSMOW and -61 ppm VPDB, respectively. Archaeal sequences in our samples were nearly all classified within groups of methanogens (avg. 91%) and cultivable methanogens were present in all water samples. On average, 6% of the bacterial sequences from our samples were classified in groups of sulfate reducers and sulfate available to support their activity ranged up to 110 mu M in concentration. Any interaction that occurs between these groups may be influenced by the energetics of their metabolic reactions. Thermodynamic calculations show that methanogens hold an energy advantage over sulfate reducers if dissolved methane concentrations are low. Under current conditions, methanogens see between 12 and 16 kJ mol-1 more usable free energy than sulfate reducers, if we assume a minimal methane concentration (1 mu M). However, usable energy for methanogens would equal that available to sulfate reducers at methane concentrations ranging between 144 and 831 mu M, well below saturation levels. Production activities that hold methane concentration below these levels, therefore, would help maintain an energy advantage for methanogens. In contrast, if production activities cause sulfate concentrations to increase, sulfate reducers would gain an energy advantage at lower methane concentrations. JF - American Geophysical Union Fall Meeting AU - Kirk, Matthew F AU - Marquart, K A AU - Wilson, Brien H AU - Flynn, T M AU - Vinson, D S AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract B11C EP - 0029 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718051533?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Thermodynamic+constraints+on+sulfate+reduction+and+methanogenesis+in+a+coalbed+methane+reservoir&rft.au=Kirk%2C+Matthew+F%3BMarquart%2C+K+A%3BWilson%2C+Brien+H%3BFlynn%2C+T+M%3BVinson%2C+D+S%3BAnonymous&rft.aulast=Kirk&rft.aufirst=Matthew&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-10-01 N1 - CODEN - #07548 ER - TY - JOUR T1 - Anthropogenic and volcanic contributions to the decadal variations of aerosols in the upper troposphere and lower stratosphere AN - 1707520215; 2015-084160 AB - We investigate the anthropogenic and volcanic contributions to sulfate aerosol in the stratosphere through modeling and analysis of satellite data. We use a global model GOCART to simulate SO2 and sulfate aerosol in the period of 2000 to 2010, during which a numerous volcanic eruptions occurred although nothing like the magnitudes of El Chichon or Pinatubo. We compare the model results with the column SO2 data from OMI and stratospheric SO2 data from MLS instrument on Aura satellite and the aerosol vertical profiles from the SCIAMACHY instrument on Envisat and the CALIOP instrument on CALIPSO satellites. Finally, we will assess the relative contributions of volcanic aerosols vs. anthropogenic aerosols to the observed decadal stratospheric aerosol trends. JF - American Geophysical Union Fall Meeting AU - Chin, Mian AU - Diehl, Thomas L AU - Bian, Huisheng AU - Aquila, Valentina AU - Colarco, Peter R AU - Burrows, J P AU - Krotkov, Nickolay A AU - Vernier, Jean-Paul AU - Lu, Z AU - Streets, D G AU - Pumphrey, H C AU - Read, William G AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract A31B EP - 3029 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707520215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Anthropogenic+and+volcanic+contributions+to+the+decadal+variations+of+aerosols+in+the+upper+troposphere+and+lower+stratosphere&rft.au=Chin%2C+Mian%3BDiehl%2C+Thomas+L%3BBian%2C+Huisheng%3BAquila%2C+Valentina%3BColarco%2C+Peter+R%3BBurrows%2C+J+P%3BKrotkov%2C+Nickolay+A%3BVernier%2C+Jean-Paul%3BLu%2C+Z%3BStreets%2C+D+G%3BPumphrey%2C+H+C%3BRead%2C+William+G%3BAnonymous&rft.aulast=Chin&rft.aufirst=Mian&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-08-27 N1 - CODEN - #07548 ER - TY - JOUR T1 - Improved estimates show large circumpolar stocks of permafrost carbon while quantifying substantial uncertainty ranges and identifying remaining data gaps AN - 1676588943; 2015-037928 AB - Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization following soil warming and permafrost thaw, but stock estimates are poorly constrained and quantitative error estimates were lacking. This study presents revised estimates of the permafrost SOC pool, including quantitative uncertainty estimates, in the 0-3 m depth range in soils as well as for deeper sediments (>3 m) in deltaic deposits of major rivers and in the Yedoma region of Siberia and Alaska. The revised estimates are based on significantly larger databases compared to previous studies. Compared to previous studies, the number of individual sites/pedons has increased by a factor 811 for 13 m soils, a factor 8 for deltaic alluvium and a factor 5 for Yedoma region deposits. A total estimated mean storage for the permafrost region of ca. 1300-1400 Pg with an uncertainty range of 1050-1650 Pg encompasses the revised estimates. Of this, 3 m depth deposits in deltas and the Yedoma region. JF - American Geophysical Union Fall Meeting AU - Hugelius, Gustaf AU - Strauss, Jens AU - Zubrzycki, S AU - Harden, J W AU - Schuur, E A G AU - Ping, C L AU - Schirrmeister, Lutz AU - Grosse, Guido AU - Michaelson, G J AU - Koven, C D AU - O'Donnell, Jonathan A AU - Elberling, B AU - Mishra, U AU - Camill, P AU - Yu, Z AU - Palmtag, Juri AU - Kuhry, Peter AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract B31G EP - 0109 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676588943?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Improved+estimates+show+large+circumpolar+stocks+of+permafrost+carbon+while+quantifying+substantial+uncertainty+ranges+and+identifying+remaining+data+gaps&rft.au=Hugelius%2C+Gustaf%3BStrauss%2C+Jens%3BZubrzycki%2C+S%3BHarden%2C+J+W%3BSchuur%2C+E+A+G%3BPing%2C+C+L%3BSchirrmeister%2C+Lutz%3BGrosse%2C+Guido%3BMichaelson%2C+G+J%3BKoven%2C+C+D%3BO%27Donnell%2C+Jonathan+A%3BElberling%2C+B%3BMishra%2C+U%3BCamill%2C+P%3BYu%2C+Z%3BPalmtag%2C+Juri%3BKuhry%2C+Peter%3BAnonymous&rft.aulast=Hugelius&rft.aufirst=Gustaf&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Variations in the horizontal and vertical distributions of organic carbon stocks across ice wedge polygons of Arctic Alaska AN - 1676587779; 2015-037965 AB - Estimates of the quantities of organic carbon stored in permafrost-region soils have improved immensely within the last few decades. However, uncertainties in these estimates remain high and affect our ability to reliably predict the vulnerability of the region's vast carbon stocks to remobilization caused by permafrost thaw and other perturbations related to climatic changes. Two major sources of uncertainty are (1) the uneven distributions and limited numbers of observational data, due to constraints on accessibility for much of this remote region; and (2) the high spatial heterogeneity of cryoturbated soils found in patterned ground--where freeze/thaw, frost heaving, and other cryogenic processes cause soil deformation, breaking/mixing of soil horizons, and deep burial of relatively labile organic matter. Ice wedge polygons are ubiquitous throughout Arctic coastal plains and drainage basins. These patterned ground features are large enough ( approximately 5-30 m across) that a better three-dimensional understanding of their carbon stocks might improve geospatial upscaling of observational data. We investigated the horizontal and vertical (up to 300 cm deep) distributions of soil organic matter across three polygon types on the North Slope of Alaska: low-center (LCP), flat-center (FCP), and high-center (HCP) polygons, with each type replicated three times. We found variations in the thickness and quality of surface organic horizons for different polygon types. Below the active layer, organic-rich cryoturbated horizons were located in the transition zone and fingered down into the upper permafrost. The HCPs exhibited more prominent deformation than LCPs and FCPs. The cross-sectional distribution and heterogeneity of organic carbon density differed among polygon types, which led to type variations in overall polygon carbon stocks as well. Our findings suggest that an approach based on accounting for polygon-scale (wedge to center) and/or landscape-scale (polygon type) variations, in tandem with remote sensing and geospatial tools, could help constrain the uncertainties associated with upscaling of carbon stocks for areas of patterned ground dominated by ice wedge polygons. JF - American Geophysical Union Fall Meeting AU - Jastrow, J D AU - Ping, C L AU - Matamala, R AU - Vugteveen, T W AU - Lederhouse, Jeremy S AU - Michaelson, G J AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract B41O EP - 06 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676587779?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Variations+in+the+horizontal+and+vertical+distributions+of+organic+carbon+stocks+across+ice+wedge+polygons+of+Arctic+Alaska&rft.au=Jastrow%2C+J+D%3BPing%2C+C+L%3BMatamala%2C+R%3BVugteveen%2C+T+W%3BLederhouse%2C+Jeremy+S%3BMichaelson%2C+G+J%3BAnonymous&rft.aulast=Jastrow&rft.aufirst=J&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Characterizing soil organic matter degradation levels in permafrost-affected soils using infrared spectroscopy AN - 1676587663; 2015-037958 AB - Diffuse-reflectance Fourier-transform mid-infrared spectroscopy (MidIR) was used to (1) investigate soil quality along a latitudinal gradient of Alaskan soils, and in combination with soil incubations, (2) to assess the relative lability of soil organic matter in the active layer and upper permafrost for some of those soils. Twenty nine sites were sampled along a latitudinal gradient (78.79N to 55.35N degrees ). The sites included 8 different vegetation types (moss/lichen, non-acidic and acidic tundra, shrub areas, deciduous forests, mixed forests, coniferous forests, and grassland). At each site, soils were separated by soil horizons and analyzed for pH, cation exchange capacity (CEC), organic and inorganic C, and total N. Samples were also scanned to obtain MidIR spectra, and ratios of characteristic bands previously suggested as indicators of organic matter quality or degradation level were calculated. Principal component analysis showed that axis 1 explained 70% of the variation and was correlated with the general Organic:Mineral ratio, soil organic C, total N, and CEC, but not with vegetation type. Axis 2 explained 25% of the variation and was correlated with most of the band ratios, with negative values for the condensation index (ratio of aromatic to aliphatic organic matter) and positive values for all humification ratios (HU1: ratio of aliphatic to polysaccharides; HU2: ratio of aromatics to polysaccharides; and HU3 ratio of lignin/phenols to polysaccharides) suggesting that axis 2 variations were related to differences in level of soil organic matter degradation. Active organic, active mineral and permafrost layers from selected tundra sites were incubated for two months at -1, 1, 4, 8 and 16 degrees C. The same band ratios were correlated with total CO2 mineralized during the incubations. Data from 4 degrees C showed that the cumulative respired CO2 from the active organic layer across all sites was negatively correlated with the HU1 humification ratio, suggesting that HU1 might be a good indicator of lability for comparing active layer organic soils. We will explore correlations at the other incubation temperatures and further evaluate the utility of MidIR band ratios for predicting the potential decomposability of organic matter in permafrost-region soils. JF - American Geophysical Union Fall Meeting AU - Matamala, R AU - Jastrow, J D AU - Calderon, Francisco AU - Liang, C AU - Miller, R M AU - Ping, C L AU - Michaelson, G J AU - Hofmann, S AU - Anonymous Y1 - 2014/12// PY - 2014 DA - December 2014 SP - Abstract B31G EP - 0147 PB - American Geophysical Union, Washington, DC VL - 2014 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676587663?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Characterizing+soil+organic+matter+degradation+levels+in+permafrost-affected+soils+using+infrared+spectroscopy&rft.au=Matamala%2C+R%3BJastrow%2C+J+D%3BCalderon%2C+Francisco%3BLiang%2C+C%3BMiller%2C+R+M%3BPing%2C+C+L%3BMichaelson%2C+G+J%3BHofmann%2C+S%3BAnonymous&rft.aulast=Matamala&rft.aufirst=R&rft.date=2014-12-01&rft.volume=2014&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2014 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-04-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Synchrotron study on load partitioning between ferrite/martensite and nanoparticles of a 9Cr ODS steel AN - 1673394398; PQ0001263587 AB - Oxide dispersion strengthened (ODS) steels exhibit exceptional radiation resistance and high-tempera-ture creep strength when compared to traditional ferritic and ferritic/martensitic (F/M) steels. Their excellent mechanical properties result from very fine nanoparticles dispersed within the matrix. In this work, we applied a high-energy synchrotron radiation X-ray to study the deformation process of a DO-ODS steel. The load partitioning between the ferrite/martensite and the nanoparticles was observed during sample yielding. During plastic deformation, the nanoparticles experienced a dramatic loading process, and the internal stress on the nanopartides increased to a maximum value of 3.7 GPa, which was much higher than the maximum applied stress (~986 MPa). After necking, the loading capacity of the nanoparticles was significantly decreased due to a debonding of the particles from the matrix, as indicated by a decline in lattice strain/internal stress. Due to the load partitioning, the ferrite/martensite slightly relaxed during early yielding, and slowly strained until failure. This study develops a better understanding of loading behavior for various phases in the ODS F/M steel. JF - Journal of Nuclear Materials AU - Mo, Kun AU - Zhou, Zhangjian AU - Miao, Yinbin AU - Yun, Di AU - Tung, Hsiao-Ming AU - Zhang, Guangming AU - Chen, Weiying AU - Aimer, Jonathan AU - Stubbins, James F AD - Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA, kunmo@anl.gov Y1 - 2014/12// PY - 2014 DA - Dec 2014 SP - 376 EP - 381 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 455 IS - 1-3 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Creep KW - Radiation KW - Radioactive materials KW - Stress KW - Steel KW - Particulates KW - Deformation KW - ENA 14:Radiological Contamination UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1673394398?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=Synchrotron+study+on+load+partitioning+between+ferrite%2Fmartensite+and+nanoparticles+of+a+9Cr+ODS+steel&rft.au=Mo%2C+Kun%3BZhou%2C+Zhangjian%3BMiao%2C+Yinbin%3BYun%2C+Di%3BTung%2C+Hsiao-Ming%3BZhang%2C+Guangming%3BChen%2C+Weiying%3BAimer%2C+Jonathan%3BStubbins%2C+James+F&rft.aulast=Mo&rft.aufirst=Kun&rft.date=2014-12-01&rft.volume=455&rft.issue=1-3&rft.spage=376&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2014.06.060 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-04-01 N1 - Number of references - 34 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Creep; Radiation; Radioactive materials; Stress; Particulates; Steel; Deformation DO - http://dx.doi.org/10.1016/j.jnucmat.2014.06.060 ER - TY - JOUR T1 - The effects of filter porosity and flow conditions on soot deposition/oxidation and pressure drop in particulate filters AN - 1668261170; PQ0001117013 AB - Particulate filters are widely used in the automotive industry to reduce PM (particulate matter) produced by internal combustion engines. Wall-flow particulate filters trap PM while exhaust gas passes through the porous walls of the filter, with the pore microstructure of the porous walls affecting soot deposition, oxidation, and pressure drops during filtration and regeneration. In this study, soot deposition/oxidation behaviors were visualized in relation to the pressure drop, and the pressure drop characteristics of two particulate filters having different porosity were compared based on the results of the visualizations. It was found that the oxidation rate of the soot cake on channel walls is slower than that of the soot in the pores, due to limited oxidizer diffusion into the soot cake, which causes three-stage regeneration under the controlled regeneration regime. The high-porosity filter offered a lower pressure drop at the same amount of soot loading, faster pressure drop recovery, and higher regeneration efficiency during controlled regeneration. JF - Energy AU - Choi, Seungmok AU - Oh, Kwang-Chul AU - Lee, Chun-Bum AD - Transportation Technology R&D Center, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA, smchoi81@gmail.com Y1 - 2014/12/01/ PY - 2014 DA - 2014 Dec 01 SP - 327 EP - 337 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 77 SN - 0360-5442, 0360-5442 KW - Environment Abstracts KW - Particulate filter KW - Pressure drop KW - Filtration KW - Controlled regeneration KW - Filter porosity KW - Porosity KW - Automotive industry KW - Particulates KW - Channels KW - Soot KW - Energy KW - Regeneration KW - Oxidation KW - Diffusion KW - Internal combustion engines KW - Exhaust emissions KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668261170?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy&rft.atitle=The+effects+of+filter+porosity+and+flow+conditions+on+soot+deposition%2Foxidation+and+pressure+drop+in+particulate+filters&rft.au=Choi%2C+Seungmok%3BOh%2C+Kwang-Chul%3BLee%2C+Chun-Bum&rft.aulast=Choi&rft.aufirst=Seungmok&rft.date=2014-12-01&rft.volume=77&rft.issue=&rft.spage=327&rft.isbn=&rft.btitle=&rft.title=Energy&rft.issn=03605442&rft_id=info:doi/10.1016%2Fj.energy.2014.08.049 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Number of references - 20 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Channels; Filtration; Soot; Energy; Automotive industry; Porosity; Oxidation; Regeneration; Diffusion; Particulates; Internal combustion engines; Exhaust emissions DO - http://dx.doi.org/10.1016/j.energy.2014.08.049 ER - TY - JOUR T1 - The significance of Li-ion batteries in electric vehicle life-cycle energy and emissions and recycling's role in its reduction AN - 1651430526; 21224203 AB - Three key questions have driven recent discussions of the energy and environmental impacts of automotive lithium-ion batteries. We address each of them, beginning with whether the energy intensity of producing all materials used in batteries or that of battery assembly is greater. Notably, battery assembly energy intensity depends on assembly facility throughput because energy consumption of equipment, especially the dry room, is mainly throughput-independent. Low-throughput facilities therefore will have higher energy intensities than near-capacity facilities. In our analysis, adopting an assembly energy intensity reflective of a low-throughput plant caused the assembly stage to dominate cradle-to-gate battery energy and environmental impact results. Results generated with an at-capacity assembly plant energy intensity, however, indicated cathode material production and aluminium use as a structural material were the drivers. Estimates of cradle-to-gate battery energy and environmental impacts must therefore be interpreted in light of assumptions made about assembly facility throughput. The second key question is whether battery recycling is worthwhile if battery assembly dominates battery cradle-to-gate impacts. In this case, even if recycled cathode materials are less energy and emissions intensive than virgin cathode materials, little energy and environmental benefit is obtained from their use because the energy consumed in assembly is so high. We reviewed the local impacts of metals recovery for cathode materials and concluded that avoiding or reducing these impacts, including SO sub(x) emissions and water contamination, is a key motivator of battery recycling regardless of the energy intensity of assembly. Finally, we address whether electric vehicles (EV) offer improved energy and environmental performance compared to internal combustion-engine vehicles (ICV). This analysis illustrated that, even if a battery assembly energy reflective of a low-throughput facility is adopted, EVs consume less petroleum and emit fewer greenhouse gases (GHG) than an ICV on a life-cycle basis. The only scenario in which an EV emitted more GHGs than an ICV was when it used solely coal-derived electricity as a fuel source. SO sub(x) emissions, however, were up to four times greater for EVs than ICVs. These emissions could be reduced through battery recycling. JF - Energy & Environmental Science AU - Dunn, J B AU - Gaines, L AU - Kelly, J C AU - James, C AU - Gallagher, K G AD - Energy Systems Division; Argonne National Laboratory; 9700 South Cass Avenue; Argonne; IL 60439; USA; +1-630-252-4667 jdunn@anl.gov Y1 - 2014/12// PY - 2014 DA - December 2014 SP - 158 EP - 168 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 8 IS - 1 SN - 1754-5692, 1754-5692 KW - Solid State and Superconductivity Abstracts (SO); Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE); Aluminium Industry Abstracts (AI) KW - Energy use KW - Cathodes KW - Energy utilization KW - Environmental impact KW - Assembly KW - Energy consumption KW - Recycling KW - Lithium batteries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1651430526?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+%26+Environmental+Science&rft.atitle=The+significance+of+Li-ion+batteries+in+electric+vehicle+life-cycle+energy+and+emissions+and+recycling%27s+role+in+its+reduction&rft.au=Dunn%2C+J+B%3BGaines%2C+L%3BKelly%2C+J+C%3BJames%2C+C%3BGallagher%2C+K+G&rft.aulast=Dunn&rft.aufirst=J&rft.date=2014-12-01&rft.volume=8&rft.issue=1&rft.spage=158&rft.isbn=&rft.btitle=&rft.title=Energy+%26+Environmental+Science&rft.issn=17545692&rft_id=info:doi/10.1039%2Fc4ee03029j LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-01 N1 - Number of references - 43 N1 - Last updated - 2016-06-30 DO - http://dx.doi.org/10.1039/c4ee03029j ER - TY - JOUR T1 - The transport behavior of As, Cu, Pb, and Zn during electrokinetic remediation of a contaminated soil using electrolyte conditioning. AN - 1629586089; 24972074 AB - Electrokinetic remediation (also known as electrokinetics) is a promising technology for removing metals from fine-grained soils. However, few studies have been conducted regarding the transport behavior of multi-metals during electrokinetics. We investigated the transport of As, Cu, Pb, and Zn from soils during electrokinetics, the metal fractionation before and after electrokinetics, the relationships between metal transport and fractionation, and the effects of electrolyte conditioning. The main transport mechanisms of the metals were electroosmosis and electromigration during the first two weeks and electromigration during the following weeks. The direction of electroosmotic flow was from the anode to the cathode, and the metals in the dissolved and reducible-oxides fractions were transported to the anode or cathode by electromigration according to the chemical speciation of the metal ions in the pore water. Moreover, a portion of the metals that were initially in the residual fraction transitioned to the reducible and soluble fractions during electrokinetic treatment. However, this alteration was slow and resulted in decreasing metal removal rates as the electrokinetic treatment progressed. In addition, the use of NaOH, H3PO4, and Na2SO4 as electrolytes resulted in conditions that favored the precipitation of metal hydroxides, phosphates, and sulfates in the soil. These results demonstrated that metal removal was affected by the initial metal fractionation, metal speciation in the pore solution, and the physical-chemical parameters of the electrolytes, such as pH and electrolyte composition. Therefore, the treatment time, use of chemicals, and energy consumption could be reduced by optimizing pretreatment and by choosing appropriate electrolytes for the target metals. JF - Chemosphere AU - Yang, Jung-Seok AU - Kwon, Man Jae AU - Choi, Jaeyoung AU - Baek, Kitae AU - O'Loughlin, Edward J AD - Korea Institute of Science and Technology (KIST) - Gangneung Institute, Gangneung 210-340, Republic of Korea. Electronic address: inenviron@kist.re.kr. ; Korea Institute of Science and Technology (KIST) - Gangneung Institute, Gangneung 210-340, Republic of Korea. ; Department of Environmental Engineering, Chonbuk National University, Deokjin-gu, Jeonju, Jeollabukdo 561-756, Republic of Korea. ; Biosciences Division, Argonne National Laboratory, Lemont, IL 60439, USA. Y1 - 2014/12// PY - 2014 DA - December 2014 SP - 79 EP - 86 VL - 117 KW - Electrolytes KW - 0 KW - Metals KW - Soil Pollutants KW - Index Medicus KW - Arsenic KW - Electrokinetics KW - Electromigration KW - Electroosmosis KW - Sequential extraction KW - Electrodes KW - Environmental Pollution -- prevention & control KW - Environmental Restoration and Remediation KW - Metals -- chemistry KW - Soil Pollutants -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629586089?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemosphere&rft.atitle=The+transport+behavior+of+As%2C+Cu%2C+Pb%2C+and+Zn+during+electrokinetic+remediation+of+a+contaminated+soil+using+electrolyte+conditioning.&rft.au=Yang%2C+Jung-Seok%3BKwon%2C+Man+Jae%3BChoi%2C+Jaeyoung%3BBaek%2C+Kitae%3BO%27Loughlin%2C+Edward+J&rft.aulast=Yang&rft.aufirst=Jung-Seok&rft.date=2014-12-01&rft.volume=117&rft.issue=&rft.spage=79&rft.isbn=&rft.btitle=&rft.title=Arts+Education+Policy+Review&rft.issn=10632913&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-07-28 N1 - Date created - 2014-12-01 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1016/j.chemosphere.2014.05.079 ER - TY - JOUR T1 - Fraction of the theoretical specific energy achieved on pack level for hypothetical battery chemistries AN - 1562667617; 20589604 AB - In valuing new active materials chemistries for advanced batteries, the theoretical specific energy is commonly used to motivate research and development A packaging factor is then used to relate the theoretical specific energy to the pack-level specific energy. As this factor is typically assumed constant higher theoretical specific energies are judged to result in higher pack-level specific energies. To test this implicit assumption, we calculated the fraction of the theoretical specific energy achieved on the pack level for hypothetical cell chemistries with various open-circuit voltages and theoretical specific energies using a peer-review bottom-up battery design model. The pack-level specific energy shows significant dependence on the open-circuit voltage and electrochemical impedance due to changes in the quantity of inactive materials required. At low-valued average open-circuit voltages, systems with dramatically different theoretical specific energies may result in battery packs similar in mass and volume. The fraction of the theoretical specific energy achieved on the pack level is higher for the lower theoretical specific energy systems mainly because the active materials mass dominates the pack mass. Finally, low-valued area-specific impedance is shown to be critical for chemistries of high theoretical specific energy and low open-circuit voltage to achieve higher pack-level specific energies. JF - Journal of Power Sources AU - Eroglu, Damla AU - Ha, Seungbum AU - Gallagher, Kevin G AD - Joint Center for Energy Storage Research, Argonne National Laboratory, Argonne, IL, USA; Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S Cass Avenue, Bldg. 200, Argonne, IL 60439-4854, USA, eroglud@anl.gov Y1 - 2014/12// PY - 2014 DA - Dec 2014 SP - 14 EP - 19 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 267 SN - 0378-7753, 0378-7753 KW - Environment Abstracts KW - Beyond lithium-ion KW - Lithium-ion KW - Battery design KW - System analysis KW - Specific energy KW - Energy density KW - Batteries KW - Energy KW - Electrochemistry KW - Research programs KW - Packaging KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1562667617?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=Fraction+of+the+theoretical+specific+energy+achieved+on+pack+level+for+hypothetical+battery+chemistries&rft.au=Eroglu%2C+Damla%3BHa%2C+Seungbum%3BGallagher%2C+Kevin+G&rft.aulast=Eroglu&rft.aufirst=Damla&rft.date=2014-12-01&rft.volume=267&rft.issue=&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/10.1016%2Fj.jpowsour.2014.05.071 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2015-04-16 N1 - SubjectsTermNotLitGenreText - Batteries; Energy; Electrochemistry; Research programs; Packaging DO - http://dx.doi.org/10.1016/j.jpowsour.2014.05.071 ER - TY - CPAPER T1 - Basis Function Sampling for Material Property Computations T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627967997; 6311759 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Whitmer, Jonathan AU - Joshi, Abhijeet AU - Chiu, Chi-cheng AU - de Pablo, Juan Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Sampling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627967997?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Basis+Function+Sampling+for+Material+Property+Computations&rft.au=Whitmer%2C+Jonathan%3BJoshi%2C+Abhijeet%3BChiu%2C+Chi-cheng%3Bde+Pablo%2C+Juan&rft.aulast=Whitmer&rft.aufirst=Jonathan&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Supramolecular Micellar Assemblies for Molecular Targeting of Cardiovascular Disease and Cancer T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627967990; 6311669 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Chung, Eun AU - Drews, Laurie AU - Nord, Kathryn AU - Tirrell, Matthew Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Cardiovascular diseases KW - Cancer UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627967990?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Supramolecular+Micellar+Assemblies+for+Molecular+Targeting+of+Cardiovascular+Disease+and+Cancer&rft.au=Chung%2C+Eun%3BDrews%2C+Laurie%3BNord%2C+Kathryn%3BTirrell%2C+Matthew&rft.aulast=Chung&rft.aufirst=Eun&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Simulations of Splashing Micro-Scale Droplets on a Dry Surface T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627965962; 6309947 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Boelens, Arnout AU - Stevens, Cacey AU - Latka, Andrzej AU - Nagel, Sidney AU - DePablo, Juan Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Simulation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627965962?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Simulations+of+Splashing+Micro-Scale+Droplets+on+a+Dry+Surface&rft.au=Boelens%2C+Arnout%3BStevens%2C+Cacey%3BLatka%2C+Andrzej%3BNagel%2C+Sidney%3BDePablo%2C+Juan&rft.aulast=Boelens&rft.aufirst=Arnout&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - On the Implementation of a Structured-Exploiting Interior-Point Solver for Structured Nonlinear Programs T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627965723; 6310126 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Zavala, Victor Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Chemical engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627965723?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=On+the+Implementation+of+a+Structured-Exploiting+Interior-Point+Solver+for+Structured+Nonlinear+Programs&rft.au=Zavala%2C+Victor&rft.aulast=Zavala&rft.aufirst=Victor&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - The Design, Performance and Cost Interrelationship in Batteries T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627964593; 6309349 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Gallagher, Kevin Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Batteries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627964593?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=The+Design%2C+Performance+and+Cost+Interrelationship+in+Batteries&rft.au=Gallagher%2C+Kevin&rft.aulast=Gallagher&rft.aufirst=Kevin&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Time Resolved Serial Protein Crystallography in a Microfluidic Device T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627964321; 6310790 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Perry, Sarah Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Microfluidics KW - Crystallography UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627964321?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Time+Resolved+Serial+Protein+Crystallography+in+a+Microfluidic+Device&rft.au=Perry%2C+Sarah&rft.aulast=Perry&rft.aufirst=Sarah&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Coacervate Driven Assemblies Using alpha-Helical Polypeptides T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627964123; 6311318 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Priftis, Dimitrios Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Polypeptides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627964123?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Coacervate+Driven+Assemblies+Using+alpha-Helical+Polypeptides&rft.au=Priftis%2C+Dimitrios&rft.aulast=Priftis&rft.aufirst=Dimitrios&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Biomimetic Coacervate Environments for Protein Analysis T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627962660; 6311290 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Perry, Sarah Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Proteins UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627962660?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Biomimetic+Coacervate+Environments+for+Protein+Analysis&rft.au=Perry%2C+Sarah&rft.aulast=Perry&rft.aufirst=Sarah&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Interfacial Properties of Polyelectrolyte Coacervates T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627962570; 6311316 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Qin, Jian AU - Hoffmann, Kyle AU - Tirrell, Matthew AU - de Pablo, Juan Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Polyelectrolytes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627962570?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Interfacial+Properties+of+Polyelectrolyte+Coacervates&rft.au=Qin%2C+Jian%3BHoffmann%2C+Kyle%3BTirrell%2C+Matthew%3Bde+Pablo%2C+Juan&rft.aulast=Qin&rft.aufirst=Jian&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Design of Highly Active and Durable Electrocatalysts By Tuning Nanostructure T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627961611; 6309002 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Kang, Yijin AU - Murray, Christopher AU - Markovic, Nenad AU - Stamenkovic, Vojislav Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Chemical engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627961611?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Design+of+Highly+Active+and+Durable+Electrocatalysts+By+Tuning+Nanostructure&rft.au=Kang%2C+Yijin%3BMurray%2C+Christopher%3BMarkovic%2C+Nenad%3BStamenkovic%2C+Vojislav&rft.aulast=Kang&rft.aufirst=Yijin&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Polyelectrolytes in Multivalent Ionic Media: New Physics and New Materials T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627960223; 6308034 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Tirrell, Matthew Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Polyelectrolytes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627960223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Polyelectrolytes+in+Multivalent+Ionic+Media%3A+New+Physics+and+New+Materials&rft.au=Tirrell%2C+Matthew&rft.aulast=Tirrell&rft.aufirst=Matthew&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - CFD Modeling of Biomass Thermochemical Conversion in Polydisperse Fluidized Beds T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627959528; 6308286 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Xue, Qingluan AU - Fox, Rodney Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Fluidized beds KW - Biomass UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627959528?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=CFD+Modeling+of+Biomass+Thermochemical+Conversion+in+Polydisperse+Fluidized+Beds&rft.au=Xue%2C+Qingluan%3BFox%2C+Rodney&rft.aulast=Xue&rft.aufirst=Qingluan&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Optimize Activity and Durability of Multimetallic Electrocatalysts By Tuning the Nanostructure T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627958296; 6307924 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Kang, Yijin AU - Snyder, Joshua AU - Li, Dongguo AU - Markovic, Nenad AU - Stamenkovic, Vojislav Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Toughness UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627958296?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Optimize+Activity+and+Durability+of+Multimetallic+Electrocatalysts+By+Tuning+the+Nanostructure&rft.au=Kang%2C+Yijin%3BSnyder%2C+Joshua%3BLi%2C+Dongguo%3BMarkovic%2C+Nenad%3BStamenkovic%2C+Vojislav&rft.aulast=Kang&rft.aufirst=Yijin&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Engineering Modular Delivery Vehicles Using Biomimetic Polyelectrolytes T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627958248; 6308503 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Leon Gibbons, Lorraine Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Polyelectrolytes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627958248?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Engineering+Modular+Delivery+Vehicles+Using+Biomimetic+Polyelectrolytes&rft.au=Leon+Gibbons%2C+Lorraine&rft.aulast=Leon+Gibbons&rft.aufirst=Lorraine&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - CPAPER T1 - Honoring Howard Brenner - the Early Years T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627957082; 6307687 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Goldman, Arthur Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Chemical engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627957082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.atitle=Honoring+Howard+Brenner+-+the+Early+Years&rft.au=Goldman%2C+Arthur&rft.aulast=Goldman&rft.aufirst=Arthur&rft.date=2014-11-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2014/webprogram/meeting2014-11-16.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-31 N1 - Last updated - 2014-11-26 ER - TY - JOUR T1 - Termination and hydration of forsteritic olivine (0 1 0) surface AN - 1700095749; 2015-072792 AB - Termination and hydration of the forsteritic (Fo90Fa10) olivine (0 1 0) surface have been investigated with high-resolution specular X-ray reflectivity and Atomic Force Microscopy. The surface was prepared by polishing a naturally grown {0 1 0} face, from which we found the polished surface in acidic (pH 3.5) alumina suspension exhibits regular steps while the basic (pH 9.5) silica polished surface is irregularly roughened, indicating there are two distinguishable mechanochemical processes for the surface dissolution. The quantitative interpretation of the regular steps from the alumina-polished surface suggests that the observed step heights correspond to multiples of crystallographic unit cell. Only this atomically terraced surface is investigated with the high-resolution X-ray reflectivity (HRXR) to determine the surface termination and hydration. The basic silica paste polished surface turned out too rough to measure with X-ray reflectivity. HRXR reveals that the alumina polished olivine (0 1 0) surface in pure water is terminated at a plane including half-occupied metal ion sites (M1), an oxygen vacancy site, and a silicate tetrahedral unit with one of its apices pointing outward with respect to the surface. An ideal termination with the oxygen vacancy would fulfill the stoichiometry of the formula unit; however, in the observation, the vacancy site is filled by an adsorbed water species and about a quarter of the remaining metal ions are further depleted. The terminating plane generates two distinct atomic layers in the laterally averaged electron density profile, on which two highly ordered adsorbed water layers are formed. The first layer formation is likely through the direct interaction with the M1 plane and the second layer is likely through the hydrogen bonding interaction with the first water layer. With this multilayered adsorbed water structure, the surface metal ion is partially hydrated by the vacancy-filling water species and adsorbed water molecules. The bulk water links to these distinct adsorbed water layers, with weak density oscillations that almost completely damp out after the first bulk water layer. The total thickness of the layered water structure including the two distinct adsorbed layers and the first layer of bulk water is slightly less than 1 nm, which corresponds to roughly three molecular layers of water. These results describe the steric constraints of the surface metal ion hydration and the iron redox environment during water-olivine interactions in this particular crystallographic orientation. Abstract Copyright (2014) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Yan, Hongping AU - Park, Changyong AU - Ahn, Gun AU - Hong, Seungbum AU - Keane, Denis T AU - Kenney-Benson, Curtis AU - Chow, Paul AU - Xiao, Yuming AU - Shen, Guoyin Y1 - 2014/11/15/ PY - 2014 DA - 2014 Nov 15 SP - 268 EP - 280 PB - Elsevier, New York, NY VL - 145 SN - 0016-7037, 0016-7037 KW - silicates KW - magnesium KW - serpentinization KW - igneous rocks KW - mantle KW - olivine group KW - crystal structure KW - metasomatism KW - iron KW - plutonic rocks KW - atomic force microscopy data KW - orthosilicates KW - chemical composition KW - pH KW - surface properties KW - alkaline earth metals KW - ultramafics KW - forsterite KW - nesosilicates KW - molecular structure KW - hydration KW - X-ray reflectivity KW - metals KW - crystal chemistry KW - 01B:Mineralogy of silicates KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1700095749?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Termination+and+hydration+of+forsteritic+olivine+%280+1+0%29+surface&rft.au=Yan%2C+Hongping%3BPark%2C+Changyong%3BAhn%2C+Gun%3BHong%2C+Seungbum%3BKeane%2C+Denis+T%3BKenney-Benson%2C+Curtis%3BChow%2C+Paul%3BXiao%2C+Yuming%3BShen%2C+Guoyin&rft.aulast=Yan&rft.aufirst=Hongping&rft.date=2014-11-15&rft.volume=145&rft.issue=&rft.spage=268&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2014.09.005 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 54 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2015-07-30 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - alkaline earth metals; atomic force microscopy data; chemical composition; crystal chemistry; crystal structure; forsterite; hydration; igneous rocks; iron; magnesium; mantle; metals; metasomatism; molecular structure; nesosilicates; olivine group; orthosilicates; pH; plutonic rocks; serpentinization; silicates; surface properties; ultramafics; X-ray reflectivity DO - http://dx.doi.org/10.1016/j.gca.2014.09.005 ER - TY - CPAPER T1 - Fuel Assembly bowing and core restraint design in fast reactors T2 - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AN - 1645177315; 6314010 JF - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AU - Grudzinski, James AU - Grandy, Christopher Y1 - 2014/11/14/ PY - 2014 DA - 2014 Nov 14 KW - Fuels UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645177315?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.atitle=Fuel+Assembly+bowing+and+core+restraint+design+in+fast+reactors&rft.au=Grudzinski%2C+James%3BGrandy%2C+Christopher&rft.aulast=Grudzinski&rft.aufirst=James&rft.date=2014-11-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://www.asmeconferences.org/Congress2014/ViewAcceptedAbstracts.cfm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - CPAPER T1 - Evaluation of mechanical properties at the Knit lines interface in a complex multi-cell PVC extrusion T2 - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AN - 1645170420; 6314791 JF - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AU - Grudzinski, James AU - Fischer, Richard AU - Pla-Dalmau, Anna AU - Talaga, Richard AU - Fagan, James AU - Grozis, Charles AU - Guarino, Victor Y1 - 2014/11/14/ PY - 2014 DA - 2014 Nov 14 KW - Polyvinyl chloride KW - Mechanical properties UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645170420?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.atitle=Evaluation+of+mechanical+properties+at+the+Knit+lines+interface+in+a+complex+multi-cell+PVC+extrusion&rft.au=Grudzinski%2C+James%3BFischer%2C+Richard%3BPla-Dalmau%2C+Anna%3BTalaga%2C+Richard%3BFagan%2C+James%3BGrozis%2C+Charles%3BGuarino%2C+Victor&rft.aulast=Grudzinski&rft.aufirst=James&rft.date=2014-11-14&rft.volume=11&rft.issue=2&rft.spage=213&rft.isbn=&rft.btitle=&rft.title=Sex+Education&rft.issn=14681811&rft_id=info:doi/ L2 - http://www.asmeconferences.org/Congress2014/ViewAcceptedAbstracts.cfm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - CPAPER T1 - Applications of simplified method for implementation of structural contact in finite element methods T2 - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AN - 1645170383; 6315217 JF - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AU - Grudzinski, James AU - Gosz, Michael Y1 - 2014/11/14/ PY - 2014 DA - 2014 Nov 14 KW - Finite element method UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645170383?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.atitle=Applications+of+simplified+method+for+implementation+of+structural+contact+in+finite+element+methods&rft.au=Grudzinski%2C+James%3BGosz%2C+Michael&rft.aulast=Grudzinski&rft.aufirst=James&rft.date=2014-11-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://www.asmeconferences.org/Congress2014/ViewAcceptedAbstracts.cfm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - CPAPER T1 - Modeling of U-Mo/Al Dispersion Fuel Meat Swelling T2 - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AN - 1645164907; 6314004 JF - 2014 International Mechanical Engineering Congress & Exposition (ASME 2014) AU - Kim, Yeon AU - Jeong, Gwan AU - Sohn, D-S Y1 - 2014/11/14/ PY - 2014 DA - 2014 Nov 14 KW - Meat KW - Fuels KW - Dispersion UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645164907?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.atitle=Modeling+of+U-Mo%2FAl+Dispersion+Fuel+Meat+Swelling&rft.au=Kim%2C+Yeon%3BJeong%2C+Gwan%3BSohn%2C+D-S&rft.aulast=Kim&rft.aufirst=Yeon&rft.date=2014-11-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+International+Mechanical+Engineering+Congress+%26+Exposition+%28ASME+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://www.asmeconferences.org/Congress2014/ViewAcceptedAbstracts.cfm LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - JOUR T1 - Multimetallic core/interlayer/shell nanostructures as advanced electrocatalysts. AN - 1624932700; 25299322 AB - The fine balance between activity and durability is crucial for the development of high performance electrocatalysts. The importance of atomic structure and compositional gradients is a guiding principle in exploiting the knowledge from well-defined materials in the design of novel class of core-shell electrocatalysts comprising Ni core, Au interlayer, and PtNi shell (Ni@Au@PtNi). This multimetallic system is found to have the optimal balance of activity and durability due to the synergy between the stabilizing effect of subsurface Au and modified electronic structure of surface Pt through interaction with subsurface Ni atoms. The electrocatalysts with Ni@Au@PtNi core-interlayer-shell structure exhibit high intrinsic and mass activities as well as superior durability for the oxygen reduction reaction with less than 10% activity loss after 10,000 potential cycles between 0.6 and 1.1 V vs the reversible hydrogen electrode. JF - Nano letters AU - Kang, Yijin AU - Snyder, Joshua AU - Chi, Miaofang AU - Li, Dongguo AU - More, Karren L AU - Markovic, Nenad M AU - Stamenkovic, Vojislav R AD - Materials Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2014/11/12/ PY - 2014 DA - 2014 Nov 12 SP - 6361 EP - 6367 VL - 14 IS - 11 KW - electrocatalysis KW - nanoparticle KW - durability KW - Core−shell KW - oxygen reduction reaction KW - activity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1624932700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Education+Daily&rft.atitle=Stakeholders+mark+positions+in+amicus+brief&rft.au=Wolfe%2C+Frank&rft.aulast=Wolfe&rft.aufirst=Frank&rft.date=2007-06-28&rft.volume=40&rft.issue=122&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=Education+Daily&rft.issn=00131261&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-05-11 N1 - Date created - 2014-11-12 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/nl5028205 ER - TY - CPAPER T1 - Impacts of Climate Change and Extreme Weather Events on Hydrology and Land Use in Southfork Watershed, IA T2 - 49th Annual Water Resources Conference (AWRA 2014) AN - 1647639518; 6325576 JF - 49th Annual Water Resources Conference (AWRA 2014) AU - Ha, Miae AU - Wu, M. Y1 - 2014/11/03/ PY - 2014 DA - 2014 Nov 03 KW - Weather KW - Resource management KW - Climatic changes KW - Hydrology KW - Watersheds KW - Land use UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1647639518?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=49th+Annual+Water+Resources+Conference+%28AWRA+2014%29&rft.atitle=Impacts+of+Climate+Change+and+Extreme+Weather+Events+on+Hydrology+and+Land+Use+in+Southfork+Watershed%2C+IA&rft.au=Ha%2C+Miae%3BWu%2C+M.&rft.aulast=Ha&rft.aufirst=Miae&rft.date=2014-11-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=49th+Annual+Water+Resources+Conference+%28AWRA+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://www.awra.org/meetings/Annual2014/doc/final-program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-12-31 N1 - Last updated - 2015-01-23 ER - TY - JOUR T1 - Functional links between Pt single crystal morphology and nanoparticles with different size and shape: the oxygen reduction reaction case AN - 1790933811; PQ0003113799 AB - Design of active and stable Pt-based nanoscale electrocatalysts for the oxygen reduction reaction (ORR) will be the key to improving the efficiency of fuel cells that are needed to deliver reliable, affordable and environmentally friendly energy. Here, by exploring the ORR on Pt single crystals, cubo-octahedral (polyhedral) Pt NPs with different sizes (ranging from 2 to 7 nm), and 7-8 nm Pt NPs with different shapes (cubo-octahedral vs.cube vs.octahedral), we presented a surface science approach capable of rationalizing, and ultimately understanding, fundamental relationships between stability of Pt NPs and activity of the ORR in acidic media. By exploring the potential induced dissolution/re-deposition of Pt between 0.05 and 1.3 V, we found that concomitant variations in morphology of Pt(111) and Pt(100) lead to narrowing differences in activity between Pt single crystal surfaces. We also found that regardless of an initial size or shape, NPs are metastable and easily evolve to thermodynamically equilibrated shape and size with very similar activity for the ORR. We concluded that while initially clearly observed, the particle size and shape effects diminish as the particles age to the point that it may appear that the ORR depends neither on the particle size nor particle shape. JF - Energy & Environmental Science AU - Li, Dongguo AU - Wang, Chao AU - Strmcnik, Dusan S AU - Tripkovic, Dusan V AU - Sun, Xiaolian AU - Kang, Yijin AU - Chi, Miaofang AU - Snyder, Joshua D AU - van der Vliet, Dennis AU - Tsai, Yifen AU - Stamenkovic, Vojislav R AU - Sun, Shouheng AU - Markovic, Nenad M AD - Materials Science Division; Argonne National Laboratory; Argonne; IL 60439; USA Y1 - 2014/11// PY - 2014 DA - November 2014 SP - 4061 EP - 4069 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 7 IS - 12 SN - 1754-5692, 1754-5692 KW - Environment Abstracts KW - Particle size KW - Oxygen KW - Fuel technology KW - Energy efficiency KW - Age KW - Energy KW - Morphology KW - Particulates KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1790933811?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Energy+%26+Environmental+Science&rft.atitle=Functional+links+between+Pt+single+crystal+morphology+and+nanoparticles+with+different+size+and+shape%3A+the+oxygen+reduction+reaction+case&rft.au=Li%2C+Dongguo%3BWang%2C+Chao%3BStrmcnik%2C+Dusan+S%3BTripkovic%2C+Dusan+V%3BSun%2C+Xiaolian%3BKang%2C+Yijin%3BChi%2C+Miaofang%3BSnyder%2C+Joshua+D%3Bvan+der+Vliet%2C+Dennis%3BTsai%2C+Yifen%3BStamenkovic%2C+Vojislav+R%3BSun%2C+Shouheng%3BMarkovic%2C+Nenad+M&rft.aulast=Li&rft.aufirst=Dongguo&rft.date=2014-11-01&rft.volume=7&rft.issue=12&rft.spage=4061&rft.isbn=&rft.btitle=&rft.title=Energy+%26+Environmental+Science&rft.issn=17545692&rft_id=info:doi/10.1039%2Fc4ee01564a LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-05-01 N1 - Number of references - 57 N1 - Last updated - 2016-07-07 N1 - SubjectsTermNotLitGenreText - Particle size; Energy efficiency; Fuel technology; Oxygen; Age; Energy; Morphology; Particulates DO - http://dx.doi.org/10.1039/c4ee01564a ER - TY - JOUR T1 - ZPPR-LMFR-EXP-010: Criticality and Sodium Void Worth Measurements in ZPPR-12 AN - 1770285243; PQ0002252089 AB - The ZPPR-12 experiments conducted by Argonne National Laboratory were designed to study sodium void worth, cell heterogeneity, and neutron streaming. The small core made it possible to conduct sodium void and neutron streaming experiments over the entire core. The simple, clean, single-zone core had no internal structures such as internal blankets or control rods to affect measurements or complicate interpretation of experimental results. Criticality and selected sodium void worth measurements were evaluated for ZPPR-12, and a detailed uncertainty analysis was performed for the measurements chosen for the benchmark. Highly detailed as-built models were developed for all configurations selected for the benchmark. A simplified RZ model was also created for the criticality benchmark. MCNP5 calculations with ENDF/B-VII.0 data for the benchmark models show generally good agreement between calculated and benchmark values for k sub(e)ffand sodium void worth JF - Nuclear Science and Engineering AU - Lell, Richard M AD - Argonne National Laboratory, Nuclear Engineering Division, 9700 South Cass Avenue, Building 208, Lemont, Illinois 60439-4842 rmlell@anl.gov Y1 - 2014/11// PY - 2014 DA - November 2014 SP - 326 EP - 334 PB - American Nuclear Society, Inc., 555 N. Kensington Ave. La Grange Park IL 60525 United States VL - 178 IS - 3 SN - 0029-5639, 0029-5639 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Sodium KW - Mathematical models KW - Argon KW - Voids KW - Control rods KW - Benchmarking KW - Heterogeneity KW - Cleaning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1770285243?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nuclear+Science+and+Engineering&rft.atitle=ZPPR-LMFR-EXP-010%3A+Criticality+and+Sodium+Void+Worth+Measurements+in+ZPPR-12&rft.au=Lell%2C+Richard+M&rft.aulast=Lell&rft.aufirst=Richard&rft.date=2014-11-01&rft.volume=178&rft.issue=3&rft.spage=326&rft.isbn=&rft.btitle=&rft.title=Nuclear+Science+and+Engineering&rft.issn=00295639&rft_id=info:doi/10.13182%2FNSE14-16 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-03-01 N1 - Number of references - 9 N1 - Last updated - 2016-03-04 DO - http://dx.doi.org/10.13182/NSE14-16 ER - TY - JOUR T1 - Tracer applications of noble gas radionuclides in the geosciences AN - 1680755743; 2015-043554 AB - Noble gas radionuclides, including (super 81) Kr (t (sub 1/2) = 229,000 years), (super 85) Kr (t (sub 1/2) = 10.8 years), and (super 39) Ar (t (sub 1/2) = 269 years), possess nearly ideal chemical and physical properties for studies of earth and environmental processes. Recent advances in Atom Trap Trace Analysis (ATTA), a laser-based atom counting method, have enabled routine measurements of the radiokrypton isotopes, as well as the demonstration of the ability to measure (super 39) Ar in environmental samples. Here we provide an overview of the ATTA technique, and a survey of recent progress made in several laboratories worldwide. We review the application of noble gas radionuclides in the geosciences and discuss how ATTA can help advance these fields, specifically: determination of groundwater residence times using (super 81) Kr, (super 85) Kr, and (super 39) Ar; dating old glacial ice using (super 81) Kr; and an (super 39) Ar survey of the main water masses of the oceans, to study circulation pathways and estimate mean residence times. Other scientific questions involving a deeper circulation of fluids in the Earth's crust and mantle are also within the scope of future applications. We conclude that the geoscience community would greatly benefit from an ATTA facility dedicated to this field, with instrumentation for routine measurements, as well as for research on further development of ATTA methods. Abstract Copyright (2014) Elsevier, B.V. JF - Earth-Science Reviews AU - Lu, Z T AU - Schlosser, P AU - Smethie, W M, Jr AU - Sturchio, N C AU - Fischer, T P AU - Kennedy, B M AU - Purtschert, R AU - Severinghaus, J P AU - Solomon, D K AU - Tanhua, T AU - Yokochi, R Y1 - 2014/11// PY - 2014 DA - November 2014 SP - 196 EP - 214 PB - Elsevier, Amsterdam VL - 138 SN - 0012-8252, 0012-8252 KW - upper Precambrian KW - North Africa KW - isotopes KW - cosmogenic elements KW - atom trap trace analysis KW - ground water KW - Ar-39 KW - ventilation KW - laboratory studies KW - Uweinat Uplift KW - radioactive isotopes KW - errors KW - Nubian Sandstone KW - dates KW - noble gases KW - ice KW - tracers KW - absolute age KW - Precambrian KW - isotope ratios KW - Nubian Aquifer KW - basement KW - glaciers KW - Proterozoic KW - Western Desert KW - krypton KW - hydrochemistry KW - argon KW - aquifers KW - paleoice KW - Egypt KW - ocean basins KW - Kr-81 KW - residence time KW - ATTA method KW - Africa KW - instruments KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680755743?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth-Science+Reviews&rft.atitle=Tracer+applications+of+noble+gas+radionuclides+in+the+geosciences&rft.au=Lu%2C+Z+T%3BSchlosser%2C+P%3BSmethie%2C+W+M%2C+Jr%3BSturchio%2C+N+C%3BFischer%2C+T+P%3BKennedy%2C+B+M%3BPurtschert%2C+R%3BSeveringhaus%2C+J+P%3BSolomon%2C+D+K%3BTanhua%2C+T%3BYokochi%2C+R&rft.aulast=Lu&rft.aufirst=Z&rft.date=2014-11-01&rft.volume=138&rft.issue=&rft.spage=196&rft.isbn=&rft.btitle=&rft.title=Earth-Science+Reviews&rft.issn=00128252&rft_id=info:doi/10.1016%2Fj.earscirev.2013.09.002 L2 - http://www.sciencedirect.com/science/journal/00128252 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 220 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2015-08-13 N1 - CODEN - ESREBW N1 - SubjectsTermNotLitGenreText - absolute age; Africa; aquifers; Ar-39; argon; atom trap trace analysis; ATTA method; basement; cosmogenic elements; dates; Egypt; errors; glaciers; ground water; hydrochemistry; ice; instruments; isotope ratios; isotopes; Kr-81; krypton; laboratory studies; noble gases; North Africa; Nubian Aquifer; Nubian Sandstone; ocean basins; paleoice; Precambrian; Proterozoic; radioactive isotopes; residence time; tracers; upper Precambrian; Uweinat Uplift; ventilation; Western Desert DO - http://dx.doi.org/10.1016/j.earscirev.2013.09.002 ER - TY - JOUR T1 - Six centuries of changing oceanic mercury AN - 1656039654; 2015-017262 AB - Mercury (Hg) is a global and persistent contaminant, affecting human health primarily via marine fish consumption. Large anthropogenic releases of Hg to the atmosphere by mining and coal combustion have resulted in a significant perturbation to the biogeochemical cycling of Hg. The magnitude of this perturbation and the relative roles of the ocean and land as sinks for anthropogenic Hg remain unclear. Here we use a 3-D global ocean biogeochemical model to show that surface ocean Hg concentrations have increased fourfold over the last 600 years. We find that anthropogenic Hg enters the ocean's interior predominantly by absorption onto sinking organic matter particulates, which decompose and release Hg at a depth of 500-800 m, implying that the human perturbation is largest in subsurface waters of biologically productive regions. Our model simulation predicts that over the last six centuries half of emitted anthropogenic Hg has accumulated in the oceans and marine sediments. Abstract Copyright (2014), . American Geophysical Union. All Rights Reserved. JF - Global Biogeochemical Cycles AU - Zhang, Yanxu AU - Jaegle, Lyatt AU - Thompson, LuAnne AU - Streets, David G Y1 - 2014/11// PY - 2014 DA - November 2014 SP - 1251 EP - 1261 PB - American Geophysical Union, Washington, DC VL - 28 IS - 11 SN - 0886-6236, 0886-6236 KW - sea water KW - Quaternary KW - three-dimensional models KW - pollutants KW - human activity KW - pollution KW - atmosphere KW - suspended materials KW - Holocene KW - Cenozoic KW - absorption KW - organic compounds KW - marine sediments KW - biogenic processes KW - deposition KW - metals KW - marine environment KW - sediments KW - lacustrine environment KW - upper Holocene KW - world ocean KW - mercury KW - lake sediments KW - 07:Oceanography KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656039654?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=unknown&rft.jtitle=Education+U.S.A.&rft.atitle=Stakeholders+in+spec+ed+case+mark+positions+in+%27friend%27+brief&rft.au=Anonymous&rft.aulast=Anonymous&rft.aufirst=&rft.date=2007-08-01&rft.volume=4&rft.issue=1&rft.spage=4&rft.isbn=&rft.btitle=&rft.title=Education+U.S.A.&rft.issn=00131571&rft_id=info:doi/ L2 - http://www.agu.org/journals/gb/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 59 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - absorption; atmosphere; biogenic processes; Cenozoic; deposition; Holocene; human activity; lacustrine environment; lake sediments; marine environment; marine sediments; mercury; metals; organic compounds; pollutants; pollution; Quaternary; sea water; sediments; suspended materials; three-dimensional models; upper Holocene; world ocean DO - http://dx.doi.org/10.1002/2014GB004939 ER - TY - JOUR T1 - In-pile test results of U-silicide or U-nitride coated U-7Mo particle dispersion fuel in Al AN - 1655733725; 21198799 AB - U-silicide or U-nitride coated U-Mo particle dispersion fuel in Al (U-Mo/Al) was in-pile tested to examine the effectiveness of the coating as a diffusion barrier between the U-7Mo fuel kernels and Al matrix. This paper reports the PIE data and analyses focusing on the effectiveness of the coating in terms of interaction layer (IL) growth and general fuel performance. The U-silicide coating showed considerable success, but it also provided evidence for additional improvement for coating process. The U-nitride coated specimen showed largely inefficient results in reducing IL growth. From the test, important observations were also made that can be utilized to improve U-Mo/Al fuel performance. The heating process for coating turned out to be beneficial to suppress fuel swelling. The use of larger fuel particles confirmed favorable effects on fuel performance. JF - Journal of Nuclear Materials AU - Kim, Yeon Soo AU - Park, J M AU - Lee, K H AU - Yoo, B O AU - Ryu, H J AU - Ye, B AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA, yskim@anl.gov Y1 - 2014/11// PY - 2014 DA - Nov 2014 SP - 238 EP - 246 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 454 IS - 1-3 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Fuels KW - Coating processes KW - Nuclear fuels KW - Radioactive materials KW - Diffusion KW - Particulates KW - Coatings KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1655733725?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=In-pile+test+results+of+U-silicide+or+U-nitride+coated+U-7Mo+particle+dispersion+fuel+in+Al&rft.au=Kim%2C+Yeon+Soo%3BPark%2C+J+M%3BLee%2C+K+H%3BYoo%2C+B+O%3BRyu%2C+H+J%3BYe%2C+B&rft.aulast=Kim&rft.aufirst=Yeon&rft.date=2014-11-01&rft.volume=454&rft.issue=1-3&rft.spage=238&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2014.08.005 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-02-01 N1 - Number of references - 53 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Coating processes; Fuels; Radioactive materials; Nuclear fuels; Diffusion; Particulates; Coatings DO - http://dx.doi.org/10.1016/j.jnucmat.2014.08.005 ER - TY - JOUR T1 - Characterization of porosity in sulfide ore minerals; a USANS/SANS study AN - 1645573703; 2015-007397 AB - Porosity plays a key role in the formation and alteration of sulfide ore minerals, yet our knowledge of the nature and formation of the residual pores is very limited. Herein, we report the application of ultra-small-angle neutron scattering and small-angle neutron scattering (USANS/SANS) to assess the porosity in five natural sulfide minerals (violarite, marcasite, pyrite, chalcopyrite, and bornite) possibly formed by hydrothermal mineral replacement reactions and two synthetic sulfide minerals (violarite and marcasite) prepared experimentally by mimicking natural hydrothermal conditions. USANS/SANS data showed very different pore size distributions for these minerals. Natural violarite and marcasite tend to possess less pores in the small size range (<100 nm) compared with their synthetic counterparts. This phenomenon is consistent with a higher degree of pore healing or diagenetic compaction experienced by the natural violarite and marcasite. Surprisingly, nanometer-sized (<20 nm) pores were revealed for a natural pyrite cube from La Rioga, Spain, and the sample has a pore volume fraction of approximately 7.7%. Both chalcopyrite and bornite from the massive sulfide assemblage of the Olympic Dam deposit in Roxby Downs, South Australia, were found to be porous with a similar pore volume fraction (approximately 15%), but chalcopyrite tends to have a higher proportion of nanometer-size pores centered at approximately 4 nm while bornite tends to have a broader pore size distribution. The specific surface area is generally low for these minerals ranging from 0.94 to 6.28 m (super 2) /g, and the surfaces are generally rough as surface fractal behavior was observed for all these minerals. This investigation has demonstrated that USANS/SANS is a very useful tool for analyzing porosity in ore minerals. We believe that with this quantified porosity information a deeper understanding of the complex fluid flow behavior within the porous minerals can be expected. JF - American Mineralogist AU - Xia, Fang AU - Zhao, Jing AU - Etschmann, Barbara E AU - Brugger, Joel AU - Garvey, Christopher J AU - Rehm, Christine AU - Lemmel, Hartmut AU - Ilavsky, Jan AU - Han, Young-Soo AU - Pring, Allan Y1 - 2014/11// PY - 2014 DA - November 2014 SP - 2398 EP - 2404 PB - Mineralogical Society of America, Washington, DC VL - 99 IS - 11-12 SN - 0003-004X, 0003-004X KW - marcasite KW - experimental studies KW - neutron methods KW - Australasia KW - violarite KW - Olympic Dam Deposit KW - chalcopyrite KW - Roxby Downs Australia KW - porosity KW - hydrothermal conditions KW - size distribution KW - ore minerals KW - pyrite KW - Australia KW - sulfides KW - South Australia KW - synthetic materials KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645573703?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Characterization+of+porosity+in+sulfide+ore+minerals%3B+a+USANS%2FSANS+study&rft.au=Xia%2C+Fang%3BZhao%2C+Jing%3BEtschmann%2C+Barbara+E%3BBrugger%2C+Joel%3BGarvey%2C+Christopher+J%3BRehm%2C+Christine%3BLemmel%2C+Hartmut%3BIlavsky%2C+Jan%3BHan%2C+Young-Soo%3BPring%2C+Allan&rft.aulast=Xia&rft.aufirst=Fang&rft.date=2014-11-01&rft.volume=99&rft.issue=11-12&rft.spage=2398&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam-2014-4845 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2015-01-01 N1 - Number of references - 61 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-01-15 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - Australasia; Australia; chalcopyrite; experimental studies; hydrothermal conditions; marcasite; neutron methods; Olympic Dam Deposit; ore minerals; porosity; pyrite; Roxby Downs Australia; size distribution; South Australia; sulfides; synthetic materials; violarite DO - http://dx.doi.org/10.2138/am-2014-4845 ER - TY - JOUR T1 - Quantifying the sensitivity of ephemeral streams to land disturbance activities in arid ecosystems at the watershed scale AN - 1642331824; 20816184 AB - Large areas of public lands administered by the Bureau of Land Management and located in arid regions of the southwestern United States are being considered for the development of utility-scale solar energy facilities. Land-disturbing activities in these desert, alluvium-filled valleys have the potential to adversely affect the hydrologic and ecologic functions of ephemeral streams. Regulation and management of ephemeral streams typically falls under a spectrum of federal, state, and local programs, but scientifically based guidelines for protecting ephemeral streams with respect to land-development activities are largely nonexistent. This study developed an assessment approach for quantifying the sensitivity to land disturbance of ephemeral stream reaches located in proposed solar energy zones (SEZs). The ephemeral stream assessment approach used publicly-available geospatial data on hydrology, topography, surficial geology, and soil characteristics, as well as high-resolution aerial imagery. These datasets were used to inform a professional judgment-based score index of potential land disturbance impacts on selected critical functions of ephemeral streams, including flow and sediment conveyance, ecological habitat value, and groundwater recharge. The total sensitivity scores (sum of scores for the critical stream functions of flow and sediment conveyance, ecological habitats, and groundwater recharge) were used to identify highly sensitive stream reaches to inform decisions on developable areas in SEZs. Total sensitivity scores typically reflected the scores of the individual stream functions; some exceptions pertain to groundwater recharge and ecological habitats. The primary limitations of this assessment approach were the lack of high-resolution identification of ephemeral stream channels in the existing National Hydrography Dataset, and the lack of mechanistic processes describing potential impacts on ephemeral stream functions at the watershed scale. The primary strength of this assessment approach is that it allows watershed-scale planning for low-impact development in arid ecosystems; the qualitative scoring of potential impacts can also be adjusted to accommodate new geospatial data, and to allow for expert and stakeholder input into decisions regarding the identification and potential avoidance of highly sensitive stream reaches. JF - Environmental Monitoring and Assessment AU - O'Connor, Ben L AU - Hamada, Yuki AU - Bowen, Esther E AU - Grippo, Mark A AU - Hartmann, Heidi M AU - Patton, Terri L AU - Lonkhuyzen, Robert A AU - Carr, Adrianne E AD - Argonne National Laboratory, Environmental Science Division, 9700 S. Cass Avenue, Bldg. 240, Argonne, IL, USA Y1 - 2014/11// PY - 2014 DA - November 2014 SP - 7075 EP - 7095 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 186 IS - 11 SN - 0167-6369, 0167-6369 KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE) KW - Ecology KW - Habitats KW - Assessments KW - Land KW - Disturbances KW - Groundwater KW - Aridity KW - Streams UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1642331824?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Monitoring+and+Assessment&rft.atitle=Quantifying+the+sensitivity+of+ephemeral+streams+to+land+disturbance+activities+in+arid+ecosystems+at+the+watershed+scale&rft.au=O%27Connor%2C+Ben+L%3BHamada%2C+Yuki%3BBowen%2C+Esther+E%3BGrippo%2C+Mark+A%3BHartmann%2C+Heidi+M%3BPatton%2C+Terri+L%3BLonkhuyzen%2C+Robert+A%3BCarr%2C+Adrianne+E&rft.aulast=O%27Connor&rft.aufirst=Ben&rft.date=2014-11-01&rft.volume=186&rft.issue=11&rft.spage=7075&rft.isbn=&rft.btitle=&rft.title=Environmental+Monitoring+and+Assessment&rft.issn=01676369&rft_id=info:doi/10.1007%2Fs10661-014-3912-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-12-01 N1 - Number of references - 54 N1 - Last updated - 2016-05-03 DO - http://dx.doi.org/10.1007/s10661-014-3912-5 ER - TY - CPAPER T1 - Early Kick Detection and Prediction: Methods and Technologies T2 - 2014 Society of Petroleum Engineers' Annual Technical Conference and Exhibition (ATCE 2014) AN - 1541353857; 6288561 JF - 2014 Society of Petroleum Engineers' Annual Technical Conference and Exhibition (ATCE 2014) AU - Fraser, D Y1 - 2014/10/27/ PY - 2014 DA - 2014 Oct 27 KW - Prediction KW - Technology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1541353857?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Society+of+Petroleum+Engineers%27+Annual+Technical+Conference+and+Exhibition+%28ATCE+2014%29&rft.atitle=Early+Kick+Detection+and+Prediction%3A+Methods+and+Technologies&rft.au=Fraser%2C+D&rft.aulast=Fraser&rft.aufirst=D&rft.date=2014-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Society+of+Petroleum+Engineers%27+Annual+Technical+Conference+and+Exhibition+%28ATCE+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://www.spe.org/atce/2014/pages/schedule/tech_program/index.php LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-06-27 N1 - Last updated - 2014-06-30 ER - TY - CPAPER T1 - Inhomogeneous surface plasmon polaritons T2 - 66th Southeastern Regional Meeting of the American Chemical Society (SERMACS 2014) AN - 1645171728; 6324785 JF - 66th Southeastern Regional Meeting of the American Chemical Society (SERMACS 2014) AU - Foley, Jonathan AU - McMahon, Jeffrey AU - Schatz, George AU - Haratyunyan, Hayk AU - Wiederrecht, Gary AU - Gray, Stephen Y1 - 2014/10/16/ PY - 2014 DA - 2014 Oct 16 KW - Food KW - Chemical engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645171728?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=66th+Southeastern+Regional+Meeting+of+the+American+Chemical+Society+%28SERMACS+2014%29&rft.atitle=Inhomogeneous+surface+plasmon+polaritons&rft.au=Foley%2C+Jonathan%3BMcMahon%2C+Jeffrey%3BSchatz%2C+George%3BHaratyunyan%2C+Hayk%3BWiederrecht%2C+Gary%3BGray%2C+Stephen&rft.aulast=Foley&rft.aufirst=Jonathan&rft.date=2014-10-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=66th+Southeastern+Regional+Meeting+of+the+American+Chemical+Society+%28SERMACS+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://abstracts.acs.org/chem/sermacs2014/program/divisionindex.php?act=session&val=289700&prog=289700 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - CPAPER T1 - Recent developments in electrochemical recycle of used reactor fuels T2 - 66th Southeastern Regional Meeting of the American Chemical Society (SERMACS 2014) AN - 1645170941; 6324967 JF - 66th Southeastern Regional Meeting of the American Chemical Society (SERMACS 2014) AU - Willit, James AU - Tylka, Magdalena AU - Williamson, Mark Y1 - 2014/10/16/ PY - 2014 DA - 2014 Oct 16 KW - Fuels KW - Electrochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645170941?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=66th+Southeastern+Regional+Meeting+of+the+American+Chemical+Society+%28SERMACS+2014%29&rft.atitle=Recent+developments+in+electrochemical+recycle+of+used+reactor+fuels&rft.au=Willit%2C+James%3BTylka%2C+Magdalena%3BWilliamson%2C+Mark&rft.aulast=Willit&rft.aufirst=James&rft.date=2014-10-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=66th+Southeastern+Regional+Meeting+of+the+American+Chemical+Society+%28SERMACS+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://abstracts.acs.org/chem/sermacs2014/program/divisionindex.php?act=session&val=289700&prog=289700 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - JOUR T1 - High-pressure single-crystal X-ray diffraction study of jadeite and kosmochlor AN - 1623260273; 2014-089087 AB - The crystal structures of natural jadeite, NaAlSi (sub 2) O (sub 6) , and synthetic kosmochlor, NaCrSi (sub 2) O (sub 6) , were studied at room temperature, under hydrostatic conditions, up to pressures of 30.4 (1) and 40.2 (1) GPa, respectively, using single-crystal synchrotron X-ray diffraction. Pressure-volume data have been fit to a third-order Birch-Murnaghan equation of state yielding V (sub 0) = 402.5 (4) Aa (super 3) , K (sub 0) = 136 (3) GPa, and K (sub 0) (super ') = 3.3 (2) for jadeite and V (sub 0) = 420.0 (3) Aa (super 3) , K (sub 0) = 123 (2) GPa and K (sub 0) (super ') = 3.61 (9) for kosmochlor. Both phases exhibit anisotropic compression with unit-strain axial ratios of 1.00:1.95:2.09 for jadeite at 30.4 (1) GPa and 1:00:2.15:2.43 for kosmochlor at 40.2 (1) GPa. Analysis of procrystal electron density distribution shows that the coordination of Na changes from 6 to 8 between 9.28 (Origlieri et al. in Am Mineral 88:1025-1032, 2003) and 18.5 (1) GPa in kosmochlor, which is also marked by a decrease in unit-strain anisotropy. Na in jadeite remains six-coordinated at 21.5 (1) GPa. Structure refinements indicate a change in the compression mechanism of kosmochlor at about 31 GPa in both the kinking of SiO (sub 4) tetrahedral chains and rate of tetrahedral compression. Below 31 GPa, the O3-O3-O3 chain extension angle and Si tetrahedral volume in kosmochlor decrease linearly with pressure, whereas above 31 GPa the kinking ceases and the rate of Si tetrahedral compression increases by greater than a factor of two. No evidence of phase transitions was observed over the studied pressure ranges. Copyright 2014 Springer-Verlag Berlin Heidelberg JF - Physics and Chemistry of Minerals AU - Posner, Esther S AU - Dera, Przemyslaw AU - Downs, Robert T AU - Lazarz, John D AU - Irmen, Peyton Y1 - 2014/10// PY - 2014 DA - October 2014 SP - 695 EP - 707 PB - Springer-Verlag, Berlin - New York VL - 41 IS - 9 SN - 0342-1791, 0342-1791 KW - silicates KW - refinement KW - X-ray diffraction data KW - strain KW - coordination KW - unit cell KW - phase transitions KW - crystal structure KW - elastic constants KW - synchrotron radiation KW - pyroxene group KW - polyhedra KW - clinopyroxene KW - phase equilibria KW - compression KW - synthetic materials KW - chain silicates KW - pressure KW - jadeite KW - tetrahedra KW - bulk modulus KW - high pressure KW - kosmochlor KW - single-crystal method KW - transition zones KW - volume KW - anisotropy KW - 17A:General geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623260273?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Physics+and+Chemistry+of+Minerals&rft.atitle=High-pressure+single-crystal+X-ray+diffraction+study+of+jadeite+and+kosmochlor&rft.au=Posner%2C+Esther+S%3BDera%2C+Przemyslaw%3BDowns%2C+Robert+T%3BLazarz%2C+John+D%3BIrmen%2C+Peyton&rft.aulast=Posner&rft.aufirst=Esther&rft.date=2014-10-01&rft.volume=41&rft.issue=9&rft.spage=695&rft.isbn=&rft.btitle=&rft.title=Physics+and+Chemistry+of+Minerals&rft.issn=03421791&rft_id=info:doi/10.1007%2Fs00269-014-0684-y L2 - http://www.springerlink.com/content/100449/?p=e597e977f1914094b3810f7e67f0a453&pi=0 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2014-01-01 N1 - Number of references - 46 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2014-11-13 N1 - CODEN - PCMIDU N1 - SubjectsTermNotLitGenreText - anisotropy; bulk modulus; chain silicates; clinopyroxene; compression; coordination; crystal structure; elastic constants; high pressure; jadeite; kosmochlor; phase equilibria; phase transitions; polyhedra; pressure; pyroxene group; refinement; silicates; single-crystal method; strain; synchrotron radiation; synthetic materials; tetrahedra; transition zones; unit cell; volume; X-ray diffraction data DO - http://dx.doi.org/10.1007/s00269-014-0684-y ER - TY - JOUR T1 - Salvage of the thiamin pyrimidine moiety by plant TenA proteins lacking an active-site cysteine. AN - 1561032612; 25014715 AB - The TenA protein family occurs in prokaryotes, plants and fungi; it has two subfamilies, one (TenA_C) having an active-site cysteine, the other (TenA_E) not. TenA_C proteins participate in thiamin salvage by hydrolysing the thiamin breakdown product amino-HMP (4-amino-5-aminomethyl-2-methylpyrimidine) to HMP (4-amino-5-hydroxymethyl-2-methylpyrimidine); the function of TenA_E proteins is unknown. Comparative analysis of prokaryote and plant genomes predicted that (i) TenA_E has a salvage role similar to, but not identical with, that of TenA_C and (ii) that TenA_E and TenA_C also have non-salvage roles since they occur in organisms that cannot make thiamin. Recombinant Arabidopsis and maize TenA_E proteins (At3g16990, GRMZM2G080501) hydrolysed amino-HMP to HMP and, far more actively, hydrolysed the N-formyl derivative of amino-HMP to amino-HMP. Ablating the At3g16990 gene in a line with a null mutation in the HMP biosynthesis gene ThiC prevented its rescue by amino-HMP. Ablating At3g16990 in the wild-type increased sensitivity to paraquat-induced oxidative stress; HMP overcame this increased sensitivity. Furthermore, the expression of TenA_E and ThiC genes in Arabidopsis and maize was inversely correlated. These results indicate that TenA_E proteins mediate amidohydrolase and aminohydrolase steps in the salvage of thiamin breakdown products. As such products can be toxic, TenA_E proteins may also pre-empt toxicity. JF - The Biochemical journal AU - Zallot, Rémi AU - Yazdani, Mohammad AU - Goyer, Aymeric AU - Ziemak, Michael J AU - Guan, Jiahn-Chou AU - McCarty, Donald R AU - de Crécy-Lagard, Valérie AU - Gerdes, Svetlana AU - Garrett, Timothy J AU - Benach, Jordi AU - Hunt, John F AU - Shintani, David K AU - Hanson, Andrew D AD - *Microbiology and Cell Science Department, University of Florida, Gainesville, FL 32611, U.S.A. ; †Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV 89557, U.S.A. ; ‡Department of Botany and Plant Pathology, Oregon State University, Hermiston, OR 97838, U.S.A. ; §Horticultural Sciences Department, University of Florida, Gainesville, FL 32611, U.S.A. ; ∥Mathematics and Computer Science Division, Argonne National Laboratory, Argonne, IL 60439, U.S.A. ; ¶College of Medicine, University of Florida, Gainesville, FL 32610, U.S.A. ; **Department of Biological Sciences and Northeast Structural Genomics Consortium, Columbia University, New York, NY 10027, U.S.A. Y1 - 2014/10/01/ PY - 2014 DA - 2014 Oct 01 SP - 145 EP - 155 VL - 463 IS - 1 KW - 3g16990 protein, A thaliana KW - 0 KW - Arabidopsis Proteins KW - Herbicides KW - Iron-Sulfur Proteins KW - THIC protein, Arabidopsis KW - Hydrolases KW - EC 3.- KW - thiaminase II KW - EC 3.5.99.2 KW - Paraquat KW - PLG39H7695 KW - Thiamine KW - X66NSO3N35 KW - Index Medicus KW - Paraquat -- pharmacology KW - Herbicides -- pharmacology KW - Oxidative Stress -- drug effects KW - Oxidative Stress -- genetics KW - Thiamine -- metabolism KW - Arabidopsis -- enzymology KW - Thiamine -- genetics KW - Arabidopsis -- genetics KW - Hydrolases -- metabolism KW - Arabidopsis Proteins -- genetics KW - Iron-Sulfur Proteins -- genetics KW - Hydrolases -- genetics KW - Zea mays -- enzymology KW - Zea mays -- genetics KW - Arabidopsis Proteins -- metabolism KW - Iron-Sulfur Proteins -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1561032612?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Biochemical+journal&rft.atitle=Salvage+of+the+thiamin+pyrimidine+moiety+by+plant+TenA+proteins+lacking+an+active-site+cysteine.&rft.au=Zallot%2C+R%C3%A9mi%3BYazdani%2C+Mohammad%3BGoyer%2C+Aymeric%3BZiemak%2C+Michael+J%3BGuan%2C+Jiahn-Chou%3BMcCarty%2C+Donald+R%3Bde+Cr%C3%A9cy-Lagard%2C+Val%C3%A9rie%3BGerdes%2C+Svetlana%3BGarrett%2C+Timothy+J%3BBenach%2C+Jordi%3BHunt%2C+John+F%3BShintani%2C+David+K%3BHanson%2C+Andrew+D&rft.aulast=Zallot&rft.aufirst=R%C3%A9mi&rft.date=2014-10-01&rft.volume=463&rft.issue=1&rft.spage=145&rft.isbn=&rft.btitle=&rft.title=The+Biochemical+journal&rft.issn=1470-8728&rft_id=info:doi/10.1042%2FBJ20140522 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2014-10-31 N1 - Date created - 2014-09-08 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1042/BJ20140522 ER - TY - JOUR T1 - On the variation of dissolution rates at the orthoclase (001) surface with pH and temperature AN - 1623259174; 2014-089273 AB - The pH- and temperature-dependent variations of the dissolution rates of orthoclase (0 0 1) surfaces in acidic aqueous solutions were examined in situ by using X-ray reflectivity and compared to density functional theory results. A phenomenological analysis of these data using the conventional relation R (sub d) (pH,T) = pH (super -) (super alpha ) exp(-Delta E (sub app) /kT), with an apparent activation energy of Delta E (sub app) approximately 65 kJ/mol, requires a variable pH-dependent order of dissolution having a value of alpha approximately 1 for pH > or = 2.5, and alpha approximately 0.37 for pH 0.5 has an apparent activation energy of Delta E (sub A) = 67 + or - 3 kJ/mol and a proton adsorption enthalpy of delta E (sub A) = -13.0 + or - 0.5 kJ/mol. A secondary reactive site (site B), which dominates dissolution at pH 0.5 is the bridging oxygen between Al and Si sites, while the dominant reactive for pH < 0.5 is identified as the bridging oxygen between Si surface sites. The superposition of these two reactions leads to the change in the apparent order of reaction near pH 2. Comparison to kinetic theory reveals that the pre-exponential factor for dissolution reaction at site A is well-reproduced by the proton impingement rate, suggesting that the sticking coefficient is effectively unity. Abstract Copyright (2014) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Fenter, Paul AU - Zapol, Peter AU - He, Haiying AU - Sturchio, Neil C Y1 - 2014/09/15/ PY - 2014 DA - 2014 Sep 15 SP - 598 EP - 611 PB - Elsevier, New York, NY VL - 141 SN - 0016-7037, 0016-7037 KW - silicates KW - Arrhenius model KW - density KW - data processing KW - aqueous solutions KW - variations KW - temperature KW - activation energy KW - alkali feldspar KW - water-rock interaction KW - acidic composition KW - Langmuir equation KW - framework silicates KW - pH KW - surface properties KW - experimental studies KW - equations KW - adsorption KW - solubility KW - models KW - orthoclase KW - isotherms KW - mathematical methods KW - crystal chemistry KW - feldspar group KW - 01B:Mineralogy of silicates KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623259174?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=On+the+variation+of+dissolution+rates+at+the+orthoclase+%28001%29+surface+with+pH+and+temperature&rft.au=Fenter%2C+Paul%3BZapol%2C+Peter%3BHe%2C+Haiying%3BSturchio%2C+Neil+C&rft.aulast=Fenter&rft.aufirst=Paul&rft.date=2014-09-15&rft.volume=141&rft.issue=&rft.spage=598&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2014.06.019 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 66 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-11-13 N1 - SubjectsTermNotLitGenreText - acidic composition; activation energy; adsorption; alkali feldspar; aqueous solutions; Arrhenius model; crystal chemistry; data processing; density; equations; experimental studies; feldspar group; framework silicates; isotherms; Langmuir equation; mathematical methods; models; orthoclase; pH; silicates; solubility; surface properties; temperature; variations; water-rock interaction DO - http://dx.doi.org/10.1016/j.gca.2014.06.019 ER - TY - JOUR T1 - Final reports of the Stardust Interstellar Preliminary Examination AN - 1696877884; 2015-068970 AB - With the discovery of bona fide extraterrestrial materials in the Stardust Interstellar Dust Collector, NASA now has a fundamentally new returned sample collection, after the Apollo, Antarctic meteorite, Cosmic Dust, Genesis, Stardust Cometary, Hayabusa, and Exposed Space Hardware samples. Here, and in companion papers in this volume, we present the results from the Preliminary Examination of this collection, the Stardust Interstellar Preliminary Examination (ISPE). We found extraterrestrial materials in two tracks in aerogel whose trajectories and morphology are consistent with an origin in the interstellar dust stream, and in residues in four impacts in the aluminum foil collectors. While the preponderance of evidence, described in detail in companion papers in this volume, points toward an interstellar origin for some of these particles, alternative origins have not yet been eliminated, and definitive tests through isotopic analyses were not allowed under the terms of the ISPE. In this summary, we answer the central questions of the ISPE: How many tracks in the collector are consistent in their morphology and trajectory with interstellar particles? How many of these potential tracks are consistent with real interstellar particles, based on chemical analysis? Conversely, what fraction of candidates are consistent with either a secondary or interplanetary origin? What is the mass distribution of these particles, and what is their state? Are they particulate or diffuse? Is there any crystalline material? How many detectable impact craters (>100 nm) are there in the foils, and what is their size distribution? How many of these craters have analyzable residue that is consistent with extraterrestrial material? And finally, can craters from secondaries be recognized through crater morphology (e.g., ellipticity)? Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Westphal, Andrew J AU - Bechtel, Hans A AU - Brenker, Frank E AU - Butterworth, Anna L AU - Flynn, George J AU - Frank, David R AU - Gainsforth, Zack AU - Hillier, Jon K AU - Postberg, Frank AU - Simionovici, Alexandre S AU - Sterken, Veerle J AU - Stroud, Rhonda M AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Borg, Janet AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Stodolna, Julien AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1720 EP - 1733 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - particle tracks KW - impact features KW - Stardust Mission KW - trajectories KW - impacts KW - distribution KW - morphology KW - size distribution KW - cosmic dust KW - detection KW - Stardust Interstellar Preliminary Examination KW - identification KW - aluminum foil KW - aerogel KW - impact craters KW - chemical composition KW - interstellar dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696877884?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Final+reports+of+the+Stardust+Interstellar+Preliminary+Examination&rft.au=Westphal%2C+Andrew+J%3BBechtel%2C+Hans+A%3BBrenker%2C+Frank+E%3BButterworth%2C+Anna+L%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BHillier%2C+Jon+K%3BPostberg%2C+Frank%3BSimionovici%2C+Alexandre+S%3BSterken%2C+Veerle+J%3BStroud%2C+Rhonda+M%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBorg%2C+Janet%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BStodolna%2C+Julien%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BKorff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Westphal&rft.aufirst=Andrew&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1720&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12221 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 26 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aerogel; aluminum foil; chemical composition; cosmic dust; detection; distribution; identification; impact craters; impact features; impacts; interstellar dust; morphology; particle tracks; size distribution; Stardust Interstellar Preliminary Examination; Stardust Mission; trajectories DO - http://dx.doi.org/10.1111/maps.12221 ER - TY - JOUR T1 - Stardust interstellar preliminary examination; V, XRF analyses of interstellar dust candidates at ESRF ID13 AN - 1696877624; 2015-068963 AB - Here, we report analyses by synchrotron X-ray fluorescence microscopy of the elemental composition of eight candidate impact features extracted from the Stardust Interstellar Dust Collector (SIDC). Six of the features were unambiguous tracks, and two were crater-like features. Five of the tracks are so-called "midnight" tracks-that is, they had trajectories consistent with an origin either in the interstellar dust stream or as secondaries from impacts on the Sample Return Capsule (SRC). In a companion paper reporting synchrotron X-ray diffraction analyses of ISPE candidates, we show that two of these particles contain natural crystalline materials: the terminal particle of track 30 contains olivine and spinel, and the terminal particle of track 34 contains olivine. Here, we show that the terminal particle of track 30, Orion, shows elemental abundances, normalized to Fe, that are close to CI values, and a complex, fine-grained structure. The terminal particle of track 34, Hylabrook, shows abundances that deviate strongly from CI, but shows little fine structure and is nearly homogenous. The terminal particles of other midnight tracks, 29 and 37, had heavy element abundances below detection threshold. A third, track 28, showed a composition inconsistent with an extraterrestrial origin, but also inconsistent with known spacecraft materials. A sixth track, with a trajectory consistent with secondary ejecta from an impact on one of the spacecraft solar panels, contains abundant Ce and Zn. This is consistent with the known composition of the glass covering the solar panel. Neither crater-like feature is likely to be associated with extraterrestrial materials. We also analyzed blank aerogel samples to characterize background and variability between aerogel tiles. We found significant differences in contamination levels and compositions, emphasizing the need for local background subtraction for accurate quantification. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Brenker, Frank E AU - Westphal, Andrew J AU - Vincze, Laszlo AU - Burghammer, Manfred AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Vekemans, Bart AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Bechtel, Hans A AU - Borg, Janet AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Butterworth, Anna L AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George J AU - Fougeray, Patrick AU - Frank, David R AU - Gainsforth, Zack AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stodolna, Julien AU - Stroud, Rhonda M AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1594 EP - 1611 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - silicates KW - particle tracks KW - stony meteorites KW - impact features KW - olivine group KW - crystal structure KW - iron KW - synchrotron radiation KW - meteorites KW - Stardust Interstellar Preliminary Examination KW - spacecraft KW - olivine KW - orthosilicates KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - chondrites KW - chemical composition KW - interstellar dust KW - CI chondrites KW - Stardust Mission KW - trajectories KW - spinel KW - carbonaceous chondrites KW - nesosilicates KW - sample preparation KW - cosmic dust KW - metals KW - fine-grained materials KW - aerogel KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696877624?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+interstellar+preliminary+examination%3B+V%2C+XRF+analyses+of+interstellar+dust+candidates+at+ESRF+ID13&rft.au=Brenker%2C+Frank+E%3BWestphal%2C+Andrew+J%3BVincze%2C+Laszlo%3BBurghammer%2C+Manfred%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BVekemans%2C+Bart%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BButterworth%2C+Anna+L%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George+J%3BFougeray%2C+Patrick%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStodolna%2C+Julien%3BStroud%2C+Rhonda+M%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BKorff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Brenker&rft.aufirst=Frank&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1594&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12206 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 28 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aerogel; carbonaceous chondrites; chemical composition; chondrites; CI chondrites; cosmic dust; crystal structure; fine-grained materials; impact features; interstellar dust; iron; metals; meteorites; nesosilicates; olivine; olivine group; orthosilicates; oxides; particle tracks; sample preparation; silicates; spacecraft; spectra; spinel; Stardust Interstellar Preliminary Examination; Stardust Mission; stony meteorites; synchrotron radiation; trajectories; X-ray fluorescence spectra DO - http://dx.doi.org/10.1111/maps.12206 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination, VI, Quantitative elemental analysis by synchrotron X-ray fluorescence nanoimaging of eight impact features in aerogel AN - 1696877025; 2015-068964 AB - Hard X-ray, quantitative, fluorescence elemental imaging was performed on the ID22NI nanoprobe and ID22 microprobe beam lines of the European Synchrotron Research facility (ESRF) in Grenoble, France, on eight interstellar candidate impact features in the framework of the NASA Stardust Interstellar Preliminary Examination (ISPE). Three features were unambiguous tracks, and the other five were identified as possible, but not definite, impact features. Overall, we produced an absolute quantification of elemental abundances in the 15 12). Orion was a highly heterogeneous Fe-bearing particle and contained about 59 fg of heavy elements located in hundred nanometer phases, forming an irregular mantle that surrounded a low-Z core. X-ray diffraction (XRD) measurements revealed Sirius to be amorphous, whereas Orion contained partially crystalline material (Gainsforth et al. 2014). Within the mantle, one grain was relatively Fe-Ni-Mn-rich; other zones were relatively Mn-Cr-Ti-rich and may correspond to different spinel populations. For absolute quantification purposes, Orion was assigned to a mineralogical assemblage of forsterite, spinel, and an unknown Fe-bearing phase, while Sirius was most likely composed of an amorphous Mg-bearing material with minor Ni and Fe. Owing to its nearly chondritic abundances of the nonvolatile elements Ca, Ti, Co, and Ni with respect to Fe, in combination with the presence of olivine and spinel as inferred from XRD measurements, Orion had a high probability of being extraterrestrial in origin. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Simionovici, Alexandre S AU - Lemelle, Laurence AU - Cloetens, Peter AU - Sole, Vicente A AU - Tresserras, Juan-Angel Sans AU - Butterworth, Anna L AU - Westphal, Andrew J AU - Gainsforth, Zack AU - Stodolna, Julien AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bassim, Nabil AU - Bastien, Ron K AU - Bechtel, Hans A AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Changela, Hitesh AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George J AU - Frank, David R AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Leonard, Ariel AU - Leroux, Hugues AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stroud, Rhonda M AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1612 EP - 1625 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - silicates KW - alteration KW - particle tracks KW - imagery KW - impact features KW - olivine group KW - iron KW - synchrotron radiation KW - errors KW - quantitative analysis KW - Stardust Interstellar Preliminary Examination KW - orthosilicates KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - chemical composition KW - interstellar dust KW - X-ray fluorescence KW - Stardust Mission KW - spinel KW - forsterite KW - nesosilicates KW - cosmic dust KW - metals KW - nickel KW - aerogel KW - corrections KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696877025?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%2C+VI%2C+Quantitative+elemental+analysis+by+synchrotron+X-ray+fluorescence+nanoimaging+of+eight+impact+features+in+aerogel&rft.au=Simionovici%2C+Alexandre+S%3BLemelle%2C+Laurence%3BCloetens%2C+Peter%3BSole%2C+Vicente+A%3BTresserras%2C+Juan-Angel+Sans%3BButterworth%2C+Anna+L%3BWestphal%2C+Andrew+J%3BGainsforth%2C+Zack%3BStodolna%2C+Julien%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBassim%2C+Nabil%3BBastien%2C+Ron+K%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BChangela%2C+Hitesh%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLeonard%2C+Ariel%3BLeroux%2C+Hugues%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStroud%2C+Rhonda+M%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BKorff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Simionovici&rft.aufirst=Alexandre&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1612&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12208 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 29 N1 - PubXState - AR N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aerogel; alteration; chemical composition; corrections; cosmic dust; errors; forsterite; imagery; impact features; interstellar dust; iron; metals; nesosilicates; nickel; olivine group; orthosilicates; oxides; particle tracks; quantitative analysis; silicates; spectra; spinel; Stardust Interstellar Preliminary Examination; Stardust Mission; synchrotron radiation; X-ray fluorescence; X-ray fluorescence spectra DO - http://dx.doi.org/10.1111/maps.12208 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination; IV, Scanning transmission X-ray microscopy analyses of impact features in the Stardust Interstellar Dust Collector AN - 1696876720; 2015-068962 AB - We report the quantitative characterization by synchrotron soft X-ray spectroscopy of 31 potential impact features in the aerogel capture medium of the Stardust Interstellar Dust Collector. Samples were analyzed in aerogel by acquiring high spatial resolution maps and high energy-resolution spectra of major rock-forming elements Mg, Al, Si, Fe, and others. We developed diagnostic screening tests to reject spacecraft secondary ejecta and terrestrial contaminants from further consideration as interstellar dust candidates. The results support an extraterrestrial origin for three interstellar candidates: I1043,1,30 (Orion) is a 3 pg particle with Mg-spinel, forsterite, and an iron-bearing phase. I1047,1,34 (Hylabrook) is a 4 pg particle comprising an olivine core surrounded by low-density, amorphous Mg-silicate and amorphous Fe, Cr, and Mn phases. I1003,1,40 (Sorok) has the track morphology of a high-speed impact, but contains no detectable residue that is convincingly distinguishable from the background aerogel. Twenty-two samples with an anthropogenic origin were rejected, including four secondary ejecta from impacts on the Stardust spacecraft aft solar panels, nine ejecta from secondary impacts on the Stardust Sample Return Capsule, and nine contaminants lacking evidence of an impact. Other samples in the collection included I1029,1,6, which contained surviving solar system impactor material. Four samples remained ambiguous: I1006,2,18, I1044,2,32, and I1092,2,38 were too dense for analysis, and we did not detect an intact projectile in I1044,3,33. We detected no radiation effects from the synchrotron soft X-ray analyses; however, we recorded the effects of synchrotron hard X-ray radiation on I1043,1,30 and I1047,1,34. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Butterworth, Anna L AU - Westphal, Andrew J AU - Tyliszczak, Tolek AU - Gainsforth, Zack AU - Stodolna, Julien AU - Frank, David R AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Bechtel, Hans A AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George J AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stroud, Rhonda M AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Vekemans, Bart AU - Vincze, Laszlo AU - Von Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1562 EP - 1593 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - silicates KW - particle tracks KW - magnesium KW - magnesian silicates KW - impact features KW - characterization KW - scanning transmission X-ray microscopy KW - olivine group KW - silicon KW - iron KW - XANES spectra KW - quantitative analysis KW - Stardust Interstellar Preliminary Examination KW - aluminum KW - orthosilicates KW - oxides KW - spectra KW - interstellar dust KW - alkaline earth metals KW - Stardust Mission KW - amorphous materials KW - trajectories KW - spinel KW - ejecta KW - X-ray spectra KW - forsterite KW - nesosilicates KW - Stardust Interstellar Dust Collector KW - cosmic dust KW - metals KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696876720?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%3B+IV%2C+Scanning+transmission+X-ray+microscopy+analyses+of+impact+features+in+the+Stardust+Interstellar+Dust+Collector&rft.au=Butterworth%2C+Anna+L%3BWestphal%2C+Andrew+J%3BTyliszczak%2C+Tolek%3BGainsforth%2C+Zack%3BStodolna%2C+Julien%3BFrank%2C+David+R%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George+J%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStroud%2C+Rhonda+M%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BVon+Korff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Butterworth&rft.aufirst=Anna&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1562&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12220 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 33 N1 - PubXState - AR N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - alkaline earth metals; aluminum; amorphous materials; characterization; cosmic dust; ejecta; forsterite; impact features; interstellar dust; iron; magnesian silicates; magnesium; metals; nesosilicates; olivine group; orthosilicates; oxides; particle tracks; quantitative analysis; scanning transmission X-ray microscopy; silicates; silicon; spectra; spinel; Stardust Interstellar Dust Collector; Stardust Interstellar Preliminary Examination; Stardust Mission; trajectories; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1111/maps.12220 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination; VII, Synchrotron X-ray fluorescence analysis of six Stardust interstellar candidates measured with the Advanced Photon Source 2-ID-D microprobe AN - 1696876094; 2015-068965 AB - The NASA Stardust spacecraft exposed an aerogel collector to the interstellar dust passing through the solar system. We performed X-ray fluorescence element mapping and abundance measurements, for elements 19 < or = Z < or = 30, on six "interstellar candidates," potential interstellar impacts identified by Stardust[at]Home and extracted for analyses in picokeystones. One, I1044,3,33, showed no element hot-spots within the designated search area. However, we identified a nearby surface feature, consistent with the impact of a weak, high-speed particle having an approximately chondritic (CI) element abundance pattern, except for factor-of-ten enrichments in K and Zn and an S depletion. This hot-spot, containing approximately 10 fg of Fe, corresponds to an approximately 350 nm chondritic particle, small enough to be missed by Stardust[at]Home, indicating that other techniques may be necessary to identify all interstellar candidates. Only one interstellar candidate, I1004,1,2, showed a track. The terminal particle has large enrichments in S, Ti, Cr, Mn, Ni, Cu, and Zn relative to Fe-normalized CI values. It has high Al/Fe, but does not match the Ni/Fe range measured for samples of Al-deck material from the Stardust sample return capsule, which was within the field-of-view of the interstellar collector. A third interstellar candidate, I1075,1,25, showed an Al-rich surface feature that has a composition generally consistent with the Al-deck material, suggesting that it is a secondary particle. The other three interstellar candidates, I1001,1,16, I1001,2,17, and I1044,2,32, showed no impact features or tracks, but allowed assessment of submicron contamination in this aerogel, including Fe hot-spots having CI-like Ni/Fe ratios, complicating the search for CI-like interstellar/interplanetary dust. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Flynn, George J AU - Sutton, Steven R AU - Lai, Barry AU - Wirick, Sue AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Bechtel, Hans A AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Butterworth, Anna L AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Frank, David R AU - Gainsforth, Zack AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stodolna, Julien AU - Stroud, Rhonda M AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Von Korff, Joshua AU - Westphal, Andrew J AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1626 EP - 1644 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - zinc KW - particle tracks KW - ion probe data KW - Stardust Mission KW - detection limit KW - enrichment KW - alkali metals KW - mass spectra KW - picokeystones KW - impacts KW - iron KW - synchrotron radiation KW - cosmic dust KW - Stardust Interstellar Preliminary Examination KW - metals KW - potassium KW - X-ray fluorescence spectra KW - sulfur KW - aerogel KW - spectra KW - chemical composition KW - interstellar dust KW - depletion KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696876094?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%3B+VII%2C+Synchrotron+X-ray+fluorescence+analysis+of+six+Stardust+interstellar+candidates+measured+with+the+Advanced+Photon+Source+2-ID-D+microprobe&rft.au=Flynn%2C+George+J%3BSutton%2C+Steven+R%3BLai%2C+Barry%3BWirick%2C+Sue%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BButterworth%2C+Anna+L%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStodolna%2C+Julien%3BStroud%2C+Rhonda+M%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BVon+Korff%2C+Joshua%3BWestphal%2C+Andrew+J%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Flynn&rft.aufirst=George&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1626&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12144 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 21 N1 - PubXState - AR N1 - Document feature - illus. N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aerogel; alkali metals; chemical composition; cosmic dust; depletion; detection limit; enrichment; impacts; interstellar dust; ion probe data; iron; mass spectra; metals; particle tracks; picokeystones; potassium; spectra; Stardust Interstellar Preliminary Examination; Stardust Mission; sulfur; synchrotron radiation; X-ray fluorescence spectra; zinc DO - http://dx.doi.org/10.1111/maps.12144 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination, XI, Identification and elemental analysis of impact craters on Al foils from the Stardust interstellar dust collector AN - 1696876008; 2015-068969 AB - The Stardust Interstellar Preliminary Examination team analyzed thirteen Al foils from the NASA Stardust interstellar collector tray in order to locate candidate interstellar dust (ISD) grain impacts. Scanning electron microscope (SEM) images reveal that the foils possess abundant impact crater and crater-like features. Elemental analyses of the crater features, with Auger electron spectroscopy, SEM-based energy dispersive X-ray (EDX) spectroscopy, and scanning transmission electron microscope-based EDX spectroscopy, demonstrate that the majority are either the result of impacting debris fragments from the spacecraft solar panels, or intrinsic defects in the foil. The elemental analyses also reveal that four craters contain residues of a definite extraterrestrial origin, either as interplanetary dust particles or ISD particles. These four craters are designated level 2 interstellar candidates, based on the crater shapes indicative of hypervelocity impacts and the residue compositions inconsistent with spacecraft debris. Abstract Copyright Published 2014. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Stroud, Rhonda M AU - Allen, Carlton AU - Ansari, Asna AU - Anderson, David AU - Bajt, Sasa AU - Bassim, Nabil AU - Bastien, Ron S AU - Bechtel, Hans A AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Butterworth, Anna L AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George J AU - Frank, David R AU - Gainsforth, Zack AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Kotula, Paul AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Schreiber, Kate AU - Silversmit, Geert AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Srama, Ralf AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stodolna, Julien AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Westphal, Andrew J AU - Von Korff, Joshua AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1698 EP - 1719 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - aluminum foils KW - impact features KW - Stardust Mission KW - electron microscopy data KW - impacts KW - X-ray spectra KW - EDS spectra KW - cosmic dust KW - hypervelocity impacts KW - Stardust Interstellar Preliminary Examination KW - identification KW - impact craters KW - spectra KW - chemical composition KW - interstellar dust KW - SEM data KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696876008?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%2C+XI%2C+Identification+and+elemental+analysis+of+impact+craters+on+Al+foils+from+the+Stardust+interstellar+dust+collector&rft.au=Stroud%2C+Rhonda+M%3BAllen%2C+Carlton%3BAnsari%2C+Asna%3BAnderson%2C+David%3BBajt%2C+Sasa%3BBassim%2C+Nabil%3BBastien%2C+Ron+S%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BButterworth%2C+Anna+L%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BKotula%2C+Paul%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSchreiber%2C+Kate%3BSilversmit%2C+Geert%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStodolna%2C+Julien%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BWestphal%2C+Andrew+J%3BVon+Korff%2C+Joshua%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Stroud&rft.aufirst=Rhonda&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1698&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12136 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 39 N1 - PubXState - AR N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aluminum foils; chemical composition; cosmic dust; EDS spectra; electron microscopy data; hypervelocity impacts; identification; impact craters; impact features; impacts; interstellar dust; SEM data; spectra; Stardust Interstellar Preliminary Examination; Stardust Mission; X-ray spectra DO - http://dx.doi.org/10.1111/maps.12136 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination; III, Infrared spectroscopic analysis of interstellar dust candidates AN - 1696875753; 2015-068961 AB - Under the auspices of the Stardust Interstellar Preliminary Examination, picokeystones extracted from the Stardust Interstellar Dust Collector were examined with synchrotron Fourier transform infrared (FTIR) microscopy to establish whether they contained extraterrestrial organic material. The picokeystones were found to be contaminated with varying concentrations and speciation of organics in the native aerogel, which hindered the search for organics in the interstellar dust candidates. Furthermore, examination of the picokeystones prior to and post X-ray microprobe analyses yielded evidence of beam damage in the form of organic deposition or modification, particularly with hard X-ray synchrotron X-ray fluorescence. From these results, it is clear that considerable care must be taken to interpret any organics that might be in interstellar dust particles. For the interstellar candidates examined thus far, however, there is no clear evidence of extraterrestrial organics associated with the track and/or terminal particles. However, we detected organic matter associated with the terminal particle in Track 37, likely a secondary impact from the Al-deck of the sample return capsule, demonstrating the ability of synchrotron FTIR to detect organic matter in small particles within picokeystones from the Stardust interstellar dust collector. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Bechtel, Hans A AU - Flynn, George J AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Butterworth, Anna L AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Frank, David R AU - Gainsforth, Zack AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stodolna, Julien AU - Stroud, Rhonda M AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Von Korff, Joshua AU - Westphal, Andrew J AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1548 EP - 1561 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - methods KW - particle tracks KW - Stardust Mission KW - aliphatic hydrocarbons KW - picokeystones KW - infrared spectra KW - synchrotron radiation KW - FTIR spectra KW - organic compounds KW - cosmic dust KW - detection KW - Stardust Interstellar Preliminary Examination KW - carbon KW - hydrocarbons KW - aerogel KW - spectra KW - organic carbon KW - interstellar dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696875753?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%3B+III%2C+Infrared+spectroscopic+analysis+of+interstellar+dust+candidates&rft.au=Bechtel%2C+Hans+A%3BFlynn%2C+George+J%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BButterworth%2C+Anna+L%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStodolna%2C+Julien%3BStroud%2C+Rhonda+M%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BVon+Korff%2C+Joshua%3BWestphal%2C+Andrew+J%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Bechtel&rft.aufirst=Hans&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1548&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12125 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 30 N1 - PubXState - AR N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aerogel; aliphatic hydrocarbons; carbon; cosmic dust; detection; FTIR spectra; hydrocarbons; infrared spectra; interstellar dust; methods; organic carbon; organic compounds; particle tracks; picokeystones; spectra; Stardust Interstellar Preliminary Examination; Stardust Mission; synchrotron radiation DO - http://dx.doi.org/10.1111/maps.12125 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination; VIII, Identification of crystalline material in two interstellar candidates AN - 1696875666; 2015-068966 AB - Using synchrotron-based X-ray diffraction measurements, we identified crystalline material in two particles of extraterrestrial origin extracted from the Stardust Interstellar Dust Collector. The first particle, I1047,1,34 (Hylabrook), consisted of a mosaiced olivine grain approximately 1 mu m in size with internal strain fields up to 0.3%. The unit cell dimensions were a = 4.85 + or - 0.08 Aa, b = 10.34 + or - 0.16 Aa, c = 6.08 + or - 0.13 Aa (2sigma ). The second particle, I1043,1,30 (Orion), contained an olivine grain nearly equal 2 mu m in length and >500 nm in width. It was polycrystalline with both mosaiced domains varying over nearly equal 20 degrees and additional unoriented domains, and contained internal strain fields Fo (sub 65) (2sigma ). Orion also contained abundant spinel nanocrystals of unknown composition, but unit cell dimension a = 8.06 + or - 0.08 Aa (2sigma ). Two additional crystalline phases were present and remained unidentified. An amorphous component appeared to be present in both these particles based on STXM and XRF results reported elsewhere. Abstract Copyright Published 2014. This article is a U.S. Government work and is in the public domain in the USA. JF - Meteoritics & Planetary Science AU - Gainsforth, Zack AU - Brenker, Frank E AU - Simionovici, Alexandre S AU - Schmitz, Sylvia AU - Burghammer, Manfred AU - Butterworth, Anna L AU - Cloetens, Peter AU - Lemelle, Laurence AU - Tresserras, Juan-Angel Sans AU - Schoonjans, Tom AU - Silversmit, Geert AU - Sole, Vicente A AU - Vekemans, Bart AU - Vincze, Laszlo AU - Westphal, Andrew J AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Bechtel, Hans A AU - Borg, Janet AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Changela, Hitesh AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George AU - Fougeray, Patrick AU - Frank, David R AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hillier, Jon K AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Postberg, Frank AU - Price, Mark C AU - Sandford, Scott A AU - Srama, Ralf AU - Stephan, Thomas AU - Sterken, Veerle J AU - Stodolna, Julien AU - Stroud, Rhonda M AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Von Korff, Joshua AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1645 EP - 1665 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - silicates KW - cell dimensions KW - X-ray diffraction data KW - strain KW - Stardust Mission KW - microstructure KW - unit cell KW - spinel KW - olivine group KW - powder method KW - crystallinity KW - synchrotron radiation KW - nesosilicates KW - cosmic dust KW - Stardust Interstellar Preliminary Examination KW - olivine KW - orthosilicates KW - oxides KW - interstellar dust KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696875666?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%3B+VIII%2C+Identification+of+crystalline+material+in+two+interstellar+candidates&rft.au=Gainsforth%2C+Zack%3BBrenker%2C+Frank+E%3BSimionovici%2C+Alexandre+S%3BSchmitz%2C+Sylvia%3BBurghammer%2C+Manfred%3BButterworth%2C+Anna+L%3BCloetens%2C+Peter%3BLemelle%2C+Laurence%3BTresserras%2C+Juan-Angel+Sans%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSole%2C+Vicente+A%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BWestphal%2C+Andrew+J%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BChangela%2C+Hitesh%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George%3BFougeray%2C+Patrick%3BFrank%2C+David+R%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHillier%2C+Jon+K%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPostberg%2C+Frank%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BSrama%2C+Ralf%3BStephan%2C+Thomas%3BSterken%2C+Veerle+J%3BStodolna%2C+Julien%3BStroud%2C+Rhonda+M%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVon+Korff%2C+Joshua%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Gainsforth&rft.aufirst=Zack&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1645&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12148 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 55 N1 - PubXState - AR N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - cell dimensions; cosmic dust; crystallinity; interstellar dust; microstructure; nesosilicates; olivine; olivine group; orthosilicates; oxides; powder method; silicates; spinel; Stardust Interstellar Preliminary Examination; Stardust Mission; strain; synchrotron radiation; unit cell; X-ray diffraction data DO - http://dx.doi.org/10.1111/maps.12148 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination; IX, high-speed interstellar dust analog capture in Stardust flight-spare aerogel AN - 1696875570; 2015-068967 AB - The NASA Stardust mission used silica aerogel slabs to slowly decelerate and capture impinging cosmic dust particles for return to Earth. During this process, impact tracks are generated along the trajectory of the particle into the aerogel. It is believed that the morphology and dimensions of these tracks, together with the state of captured grains at track termini, may be linked to the size, velocity, and density of the impacting cosmic dust grain. Here, we present the results of laboratory hypervelocity impact experiments, during which cosmic dust analog particles (diameters of between 0.2 and 0.4 mu m), composed of olivine, orthopyroxene, or an organic polymer, were accelerated onto Stardust flight-spare low-density (approximately 0.01 g cm (super -3) ) silica aerogel. The impact velocities (3-21 km s (super -1) ) were chosen to simulate the range of velocities expected during Stardust's interstellar dust (ISD) collection phases. Track lengths and widths, together with the success of particle capture, are analyzed as functions of impact velocity and particle composition, density, and size. Captured terminal particles from low-density organic projectiles become undetectable at lower velocities than those from similarly sized, denser mineral particles, which are still detectable (although substantially altered by the impact process) at 15 km s (super -1) . The survival of these terminal particles, together with the track dimensions obtained during low impact speed capture of small grains in the laboratory, indicates that two of the three best Stardust candidate extraterrestrial grains were actually captured at speeds much lower than predicted. Track length and diameters are, in general, more sensitive to impact velocities than previously expected, which makes tracks of particles with diameters of 0.4 mu m and below hard to identify at low capture speeds (<10 km s (super -1) ). Therefore, although captured intact, the majority of the interstellar dust grains returned to Earth by Stardust remain to be found. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Postberg, Frank AU - Hillier, John K AU - Armes, S P AU - Bugiel, S AU - Butterworth, Anna L AU - Dupin, D AU - Fielding, L A AU - Fujii, S AU - Gainsforth, Zack AU - Gruen, Eberhard AU - Li, Y W AU - Srama, Ralf AU - Sterken, Veerle J AU - Stodolna, Julien AU - Trieloff, Mario AU - Westphal, Andrew J AU - Achilles, C AU - Allen, Carlton AU - Ansari, Asna AU - Bajt, Sasa AU - Bassim, Nabil AU - Bastien, Ron K AU - Bechtel, Hans A AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George J AU - Frank, David R AU - Heck, Philipp R AU - Hoppe, Peter AU - Huss, G AU - Huth, Joachim AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leonard, Ariel AU - Leroux, Hugues AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Schreiber, Kate AU - Silversmit, Geert AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Stadermann, Frank J AU - Stephan, Thomas AU - Stroud, Rhonda AU - Sutton, Steven AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1666 EP - 1679 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - silicates KW - particle tracks KW - density KW - acceleration KW - olivine group KW - laboratory studies KW - pyroxene group KW - hypervelocity impacts KW - Stardust Interstellar Preliminary Examination KW - olivine KW - orthosilicates KW - velocity KW - polymers KW - interstellar dust KW - chain silicates KW - experimental studies KW - Stardust Mission KW - trajectories KW - impacts KW - size KW - nesosilicates KW - cosmic dust KW - natural analogs KW - aerogel KW - orthopyroxene KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696875570?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%3B+IX%2C+high-speed+interstellar+dust+analog+capture+in+Stardust+flight-spare+aerogel&rft.au=Postberg%2C+Frank%3BHillier%2C+John+K%3BArmes%2C+S+P%3BBugiel%2C+S%3BButterworth%2C+Anna+L%3BDupin%2C+D%3BFielding%2C+L+A%3BFujii%2C+S%3BGainsforth%2C+Zack%3BGruen%2C+Eberhard%3BLi%2C+Y+W%3BSrama%2C+Ralf%3BSterken%2C+Veerle+J%3BStodolna%2C+Julien%3BTrieloff%2C+Mario%3BWestphal%2C+Andrew+J%3BAchilles%2C+C%3BAllen%2C+Carlton%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBassim%2C+Nabil%3BBastien%2C+Ron+K%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BHeck%2C+Philipp+R%3BHoppe%2C+Peter%3BHuss%2C+G%3BHuth%2C+Joachim%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeonard%2C+Ariel%3BLeroux%2C+Hugues%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSchreiber%2C+Kate%3BSilversmit%2C+Geert%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BStroud%2C+Rhonda%3BSutton%2C+Steven%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Postberg&rft.aufirst=Frank&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1666&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12173 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 28 N1 - PubXState - AR N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2015-11-19 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - acceleration; aerogel; chain silicates; cosmic dust; density; experimental studies; hypervelocity impacts; impacts; interstellar dust; laboratory studies; natural analogs; nesosilicates; olivine; olivine group; orthopyroxene; orthosilicates; particle tracks; polymers; pyroxene group; silicates; size; Stardust Interstellar Preliminary Examination; Stardust Mission; trajectories; velocity DO - http://dx.doi.org/10.1111/maps.12173 ER - TY - JOUR T1 - Stardust Interstellar Preliminary Examination; X, Impact speeds and directions of interstellar grains on the Stardust dust collector AN - 1696875169; 2015-068968 AB - On the basis of an interstellar dust model compatible with Ulysses and Galileo observations, we calculate and predict the trajectories of interstellar dust (ISD) in the solar system and the distribution of the impact speeds, directions, and flux of ISD particles on the Stardust Interstellar Dust Collector during the two collection periods of the mission. We find that the expected impact velocities are generally low ( 1, and that some of the particles will impact on the cometary side of the collector. If we assume astronomical silicates for particle material and a density of 2 g cm (super -3) , and use the Ulysses measurements and the ISD trajectory simulations, we conclude that the total number of (detectable) captured ISD particles may be on the order of 50. In companion papers in this volume, we report the discovery of three interstellar dust candidates in the Stardust aerogel tiles. The impact directions and speeds of these candidates are consistent with those calculated from our ISD propagation model, within the uncertainties of the model and of the observations. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Sterken, Veerle J AU - Westphal, Andrew J AU - Altobelli, Nicolas AU - Gruen, Eberhard AU - Hillier, Jon K AU - Postberg, Frank AU - Srama, Ralf AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron S AU - Bassim, Nabil AU - Bechtel, Hans A AU - Borg, Janet AU - Brenker, Frank E AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Butterworth, Anna L AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Flynn, George J AU - Frank, David R AU - Gainsforth, Zack AU - Heck, Philipp R AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Hvide, Brit AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leroux, Hugues AU - Leonard, Ariel AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan AU - Ong, Wei Ja AU - Price, Mark C AU - Sandford, Scott A AU - Tresserras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Silversmit, Geert AU - Simionovici, Alexandre S AU - Sole, Vicente A AU - Stephan, Thomas AU - Stodolna, Julien AU - Stroud, Rhonda M AU - Sutton, Steven AU - Trieloff, Mario AU - Tsou, Peter AU - Tsuchiyama, Akira AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Von Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 1680 EP - 1697 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 9 SN - 1086-9379, 1086-9379 KW - solar system KW - density KW - Stardust Mission KW - orbits KW - trajectories KW - Lorentz force KW - impacts KW - simulation KW - models KW - cosmic dust KW - dynamics KW - Stardust Interstellar Preliminary Examination KW - solar radiation KW - velocity KW - aerogel KW - interstellar dust KW - uncertainty KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696875169?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Stardust+Interstellar+Preliminary+Examination%3B+X%2C+Impact+speeds+and+directions+of+interstellar+grains+on+the+Stardust+dust+collector&rft.au=Sterken%2C+Veerle+J%3BWestphal%2C+Andrew+J%3BAltobelli%2C+Nicolas%3BGruen%2C+Eberhard%3BHillier%2C+Jon+K%3BPostberg%2C+Frank%3BSrama%2C+Ralf%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+S%3BBassim%2C+Nabil%3BBechtel%2C+Hans+A%3BBorg%2C+Janet%3BBrenker%2C+Frank+E%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BButterworth%2C+Anna+L%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BHeck%2C+Philipp+R%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BHvide%2C+Brit%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeroux%2C+Hugues%3BLeonard%2C+Ariel%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan%3BOng%2C+Wei+Ja%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresserras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSilversmit%2C+Geert%3BSimionovici%2C+Alexandre+S%3BSole%2C+Vicente+A%3BStephan%2C+Thomas%3BStodolna%2C+Julien%3BStroud%2C+Rhonda+M%3BSutton%2C+Steven%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTsuchiyama%2C+Akira%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BVon+Korff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Sterken&rft.aufirst=Veerle&rft.date=2014-09-01&rft.volume=49&rft.issue=9&rft.spage=1680&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12219 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2015-01-01 N1 - Number of references - 38 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-10-15 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - aerogel; cosmic dust; density; dynamics; impacts; interstellar dust; Lorentz force; models; orbits; particles; simulation; solar radiation; solar system; Stardust Interstellar Preliminary Examination; Stardust Mission; trajectories; uncertainty; velocity DO - http://dx.doi.org/10.1111/maps.12219 ER - TY - JOUR T1 - The use of GRACE data to monitor natural and anthropogenic-induced variations in water availability across Africa AN - 1680755674; 2015-043409 AB - Inter-annual trends in terrestrial water storage (TWS) were extracted from monthly (01/2003-09/2012) Gravity Recovery and Climate Experiment (GRACE) data acquired over Africa and correlated (in a geographic information system [GIS] environment) with relevant temporal remote sensing, geologic, and hydrologic datasets. Findings include the following: (1) large sectors of Africa are undergoing statistically significant TWS variations (+ 44 mm/yr to - 15 mm/yr) due to natural and anthropogenic causes; (2) warming of the tropical Atlantic Ocean apparently intensified Atlantic monsoons and increased precipitation and TWS over western and central Africa; (3) warming in the central Indian Ocean decreased precipitation and TWS over eastern Africa; (4) the high frequency of flooding events increased TWS over the Zambezi and Okavango basins; (5) extraction of fossil groundwater decreased TWS over the Saharan aquifers; (6) deforestation decreased TWS in three subbasins (Ubangi, Congo, and Sangha) of the Congo River Basin; and (7) the construction of dams increased TWS in the Blue Nile and Atbara subbasins. Given the 10 years of monthly GRACE data acquired on the subbasin scale across the globe, as well as the plans underway for deployment of a GRACE-FO and GRACE-II, using GRACE-derived TWS data should be considered an alternative, viable index for measuring temporal and spatial variations in water availability. Abstract Copyright (2014), Elsevier, B.V. JF - Earth-Science Reviews AU - Ahmed, Mohamed AU - Sultan, Mohamed AU - Wahr, John AU - Yan, Eugene Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 289 EP - 300 PB - Elsevier, Amsterdam VL - 136 SN - 0012-8252, 0012-8252 KW - water storage KW - Okavango Delta KW - North Africa KW - rivers and streams KW - GRACE KW - climate change KW - variations KW - ground water KW - exploration KW - Ubangi Basin KW - Atbara Basin KW - dams KW - drainage basins KW - Blue Nile KW - climate KW - hydrology KW - water supply KW - monitoring KW - reservoirs KW - rainfall KW - human activity KW - Zambezi Valley KW - statistical analysis KW - Congo River basin KW - satellite methods KW - aquifers KW - Egypt KW - Southern Africa KW - Sangha Basin KW - mathematical methods KW - Botswana KW - Africa KW - Sahara KW - water resources KW - terrestrial water storage KW - remote sensing KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680755674?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth-Science+Reviews&rft.atitle=The+use+of+GRACE+data+to+monitor+natural+and+anthropogenic-induced+variations+in+water+availability+across+Africa&rft.au=Ahmed%2C+Mohamed%3BSultan%2C+Mohamed%3BWahr%2C+John%3BYan%2C+Eugene&rft.aulast=Ahmed&rft.aufirst=Mohamed&rft.date=2014-09-01&rft.volume=136&rft.issue=&rft.spage=289&rft.isbn=&rft.btitle=&rft.title=Earth-Science+Reviews&rft.issn=00128252&rft_id=info:doi/10.1016%2Fj.earscirev.2014.05.009 L2 - http://www.sciencedirect.com/science/journal/00128252 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2015-01-01 N1 - Number of references - 123 N1 - Document feature - illus. incl. 1 table, sketch maps N1 - Last updated - 2016-10-25 N1 - CODEN - ESREBW N1 - SubjectsTermNotLitGenreText - Africa; aquifers; Atbara Basin; Blue Nile; Botswana; climate; climate change; Congo River basin; dams; drainage basins; Egypt; exploration; GRACE; ground water; human activity; hydrology; mathematical methods; monitoring; North Africa; Okavango Delta; rainfall; remote sensing; reservoirs; rivers and streams; Sahara; Sangha Basin; satellite methods; Southern Africa; statistical analysis; terrestrial water storage; Ubangi Basin; variations; water resources; water storage; water supply; Zambezi Valley DO - http://dx.doi.org/10.1016/j.earscirev.2014.05.009 ER - TY - JOUR T1 - S-XANES analysis of thermal iron sulfide transformations in a suite of Argonne Premium Coals; a study of particle size effects during pyrolysis AN - 1623259201; 2014-089372 AB - A suite of four bituminous Argonne Premium Coal Samples, namely Pittsburgh#8 (P8), Blind Canyon (BC), Upper Freeport (UF), and Illinois #6 (IL6), were pyrolyzed according to the Easy R (sub o) kinetic model (Burnham and Sweeney, 1989) to R (sub o) = 4.3 and iron sulfide thermal transformations were tracked by the use of S-XANES (Sulfur X-ray Absorption Near Edge Structure.) It was shown that the pyrite transformed first to pyrrhotite by R (sub o) = 1.5, and then started to transform to troilite by R (sub o) = 2.4. Some Argonne Coals displayed evidence of structural instability. In addition, particle size effects were examined. Pyrolysis was performed on not-ground (large-particled) coal samples, which were subsequently ground to micron-size particles before data collection. S-XANES was also collected for the not-ground post-pyrolysis IL6 coal to show the effect of the extent of reaction on the surface of the particles as opposed to the bulk. It was found that the pyrite-to-pyrrhotite transformation in large particles of IL6 coal proceeded from the surface of the particle and progress inward, consistent with the shrinking core model. A scheme for determining particle size based on organic sulfur content was also developed for a coal model consisting of a 50/50 mol% mixture of pyrite and Maya petroleum vacuum resid asphaltene for a range of known particle sizes. Lastly, the behavior of both marcasite (a polymorph of pyrite) and pyrite in a coal model was investigated for large ( approximately 100 mu m) and small ( approximately 5 mu m) particles. The marcasite proved to be less structurally stable than pyrite for the large particles, with an abrupt transformation to a mixture of pyrrhotite and troilite, and an abrupt drop in aliphatic sulfur content, indicating consequent H (sub 2) S generation at R (sub o) = 2.4. This transformation is much less pronounced for pyrite at the same point in pyrolysis. Abstract Copyright (2014) Elsevier, B.V. JF - International Journal of Coal Geology AU - Bolin, Trudy B Y1 - 2014/09/01/ PY - 2014 DA - 2014 Sep 01 SP - 200 EP - 213 PB - Elsevier, Amsterdam VL - 131 SN - 0166-5162, 0166-5162 KW - United States KW - thermal alteration KW - aliphatic hydrocarbons KW - bituminous coal KW - XANES spectra KW - sedimentary rocks KW - pyrolysis KW - coal KW - spectra KW - pyrrhotite KW - troilite KW - Illinois Basin KW - marcasite KW - experimental studies KW - asphalt KW - grain size KW - hydrogen sulfide KW - X-ray spectra KW - bitumens KW - organic compounds KW - Argonne Premium Coals KW - iron sulfides KW - hydrocarbons KW - sulfur KW - heating KW - pyrite KW - sulfides KW - 06B:Petrology of coal UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623259201?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Coal+Geology&rft.atitle=S-XANES+analysis+of+thermal+iron+sulfide+transformations+in+a+suite+of+Argonne+Premium+Coals%3B+a+study+of+particle+size+effects+during+pyrolysis&rft.au=Bolin%2C+Trudy+B&rft.aulast=Bolin&rft.aufirst=Trudy&rft.date=2014-09-01&rft.volume=131&rft.issue=&rft.spage=200&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Coal+Geology&rft.issn=01665162&rft_id=info:doi/10.1016%2Fj.coal.2014.06.015 L2 - http://www.sciencedirect.com/science/journal/01665162 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 38 N1 - Document feature - illus. incl. 7 tables N1 - Last updated - 2014-11-13 N1 - SubjectsTermNotLitGenreText - aliphatic hydrocarbons; Argonne Premium Coals; asphalt; bitumens; bituminous coal; coal; experimental studies; grain size; heating; hydrocarbons; hydrogen sulfide; Illinois Basin; iron sulfides; marcasite; organic compounds; pyrite; pyrolysis; pyrrhotite; sedimentary rocks; spectra; sulfides; sulfur; thermal alteration; troilite; United States; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.coal.2014.06.015 ER - TY - JOUR T1 - Elastic behavior and pressure-induced structure evolution of topaz up to 45 GPa AN - 1623256487; 2014-089077 AB - The behavior of a natural topaz, Al (sub 2.00) Si (sub 1.05) O (sub 4.00) (OH (sub 0.26) F (sub 1.75) ), has been investigated by means of in situ single-crystal synchrotron X-ray diffraction up to 45 GPa. No phase transition or change in the compressional regime has been observed within the pressure-range investigated. The compressional behavior was described with a third-order Birch-Murnaghan equation of state (III-BM-EoS). The III-BM-EoS parameters, simultaneously refined using the data weighted by the uncertainties in P and V, are as follows: K (sub V) = 158(4) GPa and K (sub V) ' = 3.3(3). The confidence ellipse at 68.3 % (Delta chi (super 2) = 2.30, 1sigma ) was calculated starting from the variance-covariance matrix of K (sub V) and K' obtained from the III-BM-EoS least-square procedure. The ellipse is elongated with a negative slope, indicating a negative correlation of the parameters K (sub V) and K (sub V) ', with K (sub V) = 158 + or - 6 GPa and K (sub V) ' = 3.3 + or - 4. A linearized III-BM-EoS was used to obtain the axial-EoS parameters (at room-P), yielding: K(a) = 146(5) GPa [beta (sub a) = 1/(3K(a)) = 0.00228(6) GPa (super -1) ] and K'(a) = 4.6(3) for the a-axis; K(b) = 220(4) GPa [beta (sub b) = 0.00152(4) GPa (super -1) ] and K'(b) = 2.6(3) for the b-axis; K(c) = 132(4) GPa [beta (sub c) = 0.00252(7) GPa (super -1) ] and K'(c) = 3.3(3) for the c-axis. The elastic anisotropy of topaz at room-P can be expressed as: K(a):K(b):K(c) = 1.10:1.67:1.00 (beta (sub a) :beta (sub b) :beta (sub c) = 1.50:1.00:1.66). A series of structure refinements have been performed based on the intensity data collected at high pressure, showing that the P-induced structure evolution at the atomic scale is mainly represented by polyhedral compression along with inter-polyhedral tilting. A comparative analysis of the elastic behavior and P/T-stability of topaz polymorphs and "phase egg" (i.e., AlSiO (sub 3) OH) is carried out. Copyright 2014 Springer-Verlag Berlin Heidelberg JF - Physics and Chemistry of Minerals AU - Gatta, G D AU - Morgenroth, W AU - Dera, P AU - Petitgirard, S AU - Liermann, H P Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 569 EP - 577 PB - Springer-Verlag, Berlin - New York VL - 41 IS - 8 SN - 0342-1791, 0342-1791 KW - silicates KW - halides KW - cell dimensions KW - refinement KW - fluorides KW - pressure KW - X-ray diffraction data KW - elastic properties KW - unit cell KW - crystal structure KW - deformation KW - high pressure KW - nesosilicates KW - physical properties KW - polymorphism KW - single-crystal method KW - topaz KW - orthosilicates KW - equations of state KW - uncertainty KW - P-T conditions KW - compressibility KW - 17A:General geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1623256487?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Physics+and+Chemistry+of+Minerals&rft.atitle=Elastic+behavior+and+pressure-induced+structure+evolution+of+topaz+up+to+45+GPa&rft.au=Gatta%2C+G+D%3BMorgenroth%2C+W%3BDera%2C+P%3BPetitgirard%2C+S%3BLiermann%2C+H+P&rft.aulast=Gatta&rft.aufirst=G&rft.date=2014-09-01&rft.volume=41&rft.issue=8&rft.spage=569&rft.isbn=&rft.btitle=&rft.title=Physics+and+Chemistry+of+Minerals&rft.issn=03421791&rft_id=info:doi/10.1007%2Fs00269-014-0670-4 L2 - http://www.springerlink.com/content/100449/?p=e597e977f1914094b3810f7e67f0a453&pi=0 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2014-01-01 N1 - Number of references - 39 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-11-13 N1 - CODEN - PCMIDU N1 - SubjectsTermNotLitGenreText - cell dimensions; compressibility; crystal structure; deformation; elastic properties; equations of state; fluorides; halides; high pressure; nesosilicates; orthosilicates; P-T conditions; physical properties; polymorphism; pressure; refinement; silicates; single-crystal method; topaz; uncertainty; unit cell; X-ray diffraction data DO - http://dx.doi.org/10.1007/s00269-014-0670-4 ER - TY - JOUR T1 - RsaM: a transcriptional regulator of Burkholderia spp. with novel fold AN - 1618149875; 20761559 AB - Burkholderia cepacia complex is a set of closely related bacterial species that are notorious pathogens of cystic fibrosis patients, responsible for life-threatening lung infections. Expression of several virulence factors of Burkholderia cepacia complex is controlled by a mechanism known as quorum sensing (QS). QS is a means of bacterial communication used to coordinate gene expression in a cell-density-dependent manner. The system involves the production of diffusible signaling molecules (N-acyl-l-homoserine lactones, AHLs), that bind to cognate transcriptional regulators and influence their ability to regulate gene expression. One such system that is highly conserved in Burkholderia cepacia complex consists of CepI and CepR. CepI is AHL synthase, whereas CepR is an AHL-dependent transcription factor. In most members of the Burkholderia cepacia complex group, the cepI and cepR genes are divergently transcribed and separated by additional genes. One of them, bcam1869, encodes the BcRsaM protein, which was recently postulated to modulate the abundance or activity of CepI or CepR. Here, we show the crystal structure of BcRsaM from B. cenocepacia J2315. It is a single-domain protein with unique topology and presents a novel fold. The protein is a dimer in the crystal and in solution. This regulator has no known DNA-binding motifs and direct binding of BcRsaM to the cepI promoter could not be detected in in vitro assays. Therefore, we propose that the modulatory action of RsaM might result from interactions with other components of the QS machinery rather than from direct association with the DNA promoter. The atomic coordinates and structure factors have been deposited in the Protein Data Bank under entry 4O2H. BcRsaMand BcRsaMbindby x-ray crystallography(View interaction)BcRsaMand BcRsaMbind by molecular sieving (View interaction) The RsaM protein from B. cenocepacia plays modulatory roles in quorum sensing, most likely through transcription regulation. The structure of RsaM reveals a dimer with a novel fold and no apparent DNA/RNA binding motifs or enzyme active sites. It shows no pheromone and DNA binding. The action of RsaM might result from interactions with other components of the transcription/translation machinery. JF - FEBS Journal AU - Michalska, Karolina AU - Chhor, Gekleng AU - Clancy, Shonda AU - Jedrzejczak, Robert AU - Babnigg, Gyorgy AU - Winans, Stephen C AU - Joachimiak, Andrzej AD - Midwest Center for Structural Genomics. Argonne National Laboratory Y1 - 2014/09// PY - 2014 DA - September 2014 SP - 4293 EP - 4306 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 281 IS - 18 SN - 1742-464X, 1742-464X KW - Microbiology Abstracts B: Bacteriology KW - Translation KW - virulence factors KW - N-Acyl homoserine lactone KW - quorum sensing KW - Enzymes KW - Burkholderia cepacia KW - Crystals KW - Pathogens KW - Infection KW - Gene expression KW - Data banks KW - Promoters KW - Protein folding KW - Pheromones KW - RNA KW - Lung KW - Transcription factors KW - Ionizing radiation KW - DNA KW - Crystal structure KW - Chemical communication KW - Cystic fibrosis KW - J 02400:Human Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618149875?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=FEBS+Journal&rft.atitle=RsaM%3A+a+transcriptional+regulator+of+Burkholderia+spp.+with+novel+fold&rft.au=Michalska%2C+Karolina%3BChhor%2C+Gekleng%3BClancy%2C+Shonda%3BJedrzejczak%2C+Robert%3BBabnigg%2C+Gyorgy%3BWinans%2C+Stephen+C%3BJoachimiak%2C+Andrzej&rft.aulast=Michalska&rft.aufirst=Karolina&rft.date=2014-09-01&rft.volume=281&rft.issue=18&rft.spage=4293&rft.isbn=&rft.btitle=&rft.title=FEBS+Journal&rft.issn=1742464X&rft_id=info:doi/10.1111%2Ffebs.12868 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Translation; N-Acyl homoserine lactone; virulence factors; quorum sensing; Enzymes; Pathogens; Crystals; Infection; Data banks; Gene expression; Promoters; RNA; Pheromones; Protein folding; Lung; Ionizing radiation; Transcription factors; Crystal structure; DNA; Chemical communication; Cystic fibrosis; Burkholderia cepacia DO - http://dx.doi.org/10.1111/febs.12868 ER - TY - JOUR T1 - Longitudinal analysis of microbial interaction between humans and the indoor environment AN - 1811909311; PQ0003442748 AB - Signature microbes follow you from house to houseHouseholders share more than habitation; they also share inhabitants. In a diverse sample of U.S. homes, Lax et al. found that people and animals sharing homes shared their microbial communities (microbiota) too, probably because of skin shedding and hand and foot contamination. When families moved, their microbiological "aura" followed. If one person left the home even for a few days, their contribution to the microbiome diminished. These findings have implications not only for household identity and composition, but also for indicators of the members' health and well-being.Science, this issue p. 1048 JF - Science AU - Lax, Simon AU - Smith, Daniel P AU - Hampton-Marcell, Jarrad AU - Owens, Sarah M AU - Handley, Kim M AU - Scott, Nicole M AU - Gibbons, Sean M AU - Larsen, Peter AU - Shogan, Benjamin D AU - Weiss, Sophie AU - Metcalf, Jessica L AU - Ursell, Luke K AU - Vazquez-Baeza, Yoshiki AU - Van Treuren, Will AU - Hasan, Nur A AU - Gibson, Molly K AU - Colwell, Rita AU - Dantas, Gautam AU - Knight, Rob AU - Gilbert, Jack A AD - Institute for Genomic and Systems Biology, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA, gilbertjack@anl.gov Y1 - 2014/08/29/ PY - 2014 DA - 2014 Aug 29 SP - 1048 EP - 1052 PB - American Association for the Advancement of Science, 1200 New York Avenue, NW Washington DC 20005 United States VL - 345 IS - 6200 SN - 0036-8075, 0036-8075 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Houses KW - Skin KW - Contamination KW - Foot KW - Hand KW - A 01450:Environmental Pollution & Waste Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811909311?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Longitudinal+analysis+of+microbial+interaction+between+humans+and+the+indoor+environment&rft.au=Lax%2C+Simon%3BSmith%2C+Daniel+P%3BHampton-Marcell%2C+Jarrad%3BOwens%2C+Sarah+M%3BHandley%2C+Kim+M%3BScott%2C+Nicole+M%3BGibbons%2C+Sean+M%3BLarsen%2C+Peter%3BShogan%2C+Benjamin+D%3BWeiss%2C+Sophie%3BMetcalf%2C+Jessica+L%3BUrsell%2C+Luke+K%3BVazquez-Baeza%2C+Yoshiki%3BVan+Treuren%2C+Will%3BHasan%2C+Nur+A%3BGibson%2C+Molly+K%3BColwell%2C+Rita%3BDantas%2C+Gautam%3BKnight%2C+Rob%3BGilbert%2C+Jack+A&rft.aulast=Lax&rft.aufirst=Simon&rft.date=2014-08-29&rft.volume=345&rft.issue=6200&rft.spage=1048&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1254529 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-08-17 N1 - SubjectsTermNotLitGenreText - Houses; Skin; Contamination; Foot; Hand DO - http://dx.doi.org/10.1126/science.1254529 ER - TY - JOUR T1 - Evidence for interstellar origin of seven dust particles collected by the Stardust spacecraft AN - 1618133384; 2014-086853 AB - Seven particles captured by the Stardust Interstellar Dust Collector and returned to Earth for laboratory analysis have features consistent with an origin in the contemporary interstellar dust stream. More than 50 spacecraft debris particles were also identified. The interstellar dust candidates are readily distinguished from debris impacts on the basis of elemental composition and/or impact trajectory. The seven candidate interstellar particles are diverse in elemental composition, crystal structure, and size. The presence of crystalline grains and multiple iron-bearing phases, including sulfide, in some particles indicates that individual interstellar particles diverge from any one representative model of interstellar dust inferred from astronomical observations and theory. JF - Science AU - Westphal, Andrew J AU - Stroud, Rhonda M AU - Bechtel, Hans A AU - Brenker, Frank E AU - Butterworth, Anna L AU - Flynn, George J AU - Frank, David R AU - Gainsforth, Zack AU - Hillier, Jon K AU - Postberg, Frank AU - Simionovici, Alexandre S AU - Sterken, Veerle J AU - Nittler, Larry R AU - Allen, Carlton AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leonard, Ariel AU - Leroux, Hugues AU - Lettieri, Robert AU - Marchant, William AU - Ogliore, Ryan AU - Ong, Wei Jia AU - Price, Mark C AU - Sandford, Scott A AU - Tresseras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Schreiber, Kate AU - Silversmit, Geert AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank AU - Stephan, Thomas AU - Stodolna, Julien AU - Sutton, Stephen AU - Trieloff, Mario AU - Tsou, Peter AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - von Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E Y1 - 2014/08/15/ PY - 2014 DA - 2014 Aug 15 SP - 786 EP - 791 PB - American Association for the Advancement of Science, Washington, DC VL - 345 IS - 6198 SN - 0036-8075, 0036-8075 KW - experimental studies KW - X-ray diffraction data KW - Stardust Mission KW - crystal structure KW - cosmochemistry KW - interplanetary dust KW - models KW - laboratory studies KW - physical properties KW - debris KW - cosmic dust KW - mineral composition KW - identification KW - X-ray fluorescence spectra KW - spectra KW - geochemistry KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618133384?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Evidence+for+interstellar+origin+of+seven+dust+particles+collected+by+the+Stardust+spacecraft&rft.au=Westphal%2C+Andrew+J%3BStroud%2C+Rhonda+M%3BBechtel%2C+Hans+A%3BBrenker%2C+Frank+E%3BButterworth%2C+Anna+L%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BHillier%2C+Jon+K%3BPostberg%2C+Frank%3BSimionovici%2C+Alexandre+S%3BSterken%2C+Veerle+J%3BNittler%2C+Larry+R%3BAllen%2C+Carlton%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeonard%2C+Ariel%3BLeroux%2C+Hugues%3BLettieri%2C+Robert%3BMarchant%2C+William%3BOgliore%2C+Ryan%3BOng%2C+Wei+Jia%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresseras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSchreiber%2C+Kate%3BSilversmit%2C+Geert%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank%3BStephan%2C+Thomas%3BStodolna%2C+Julien%3BSutton%2C+Stephen%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3Bvon+Korff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E&rft.aulast=Westphal&rft.aufirst=Andrew&rft.date=2014-08-15&rft.volume=345&rft.issue=6198&rft.spage=786&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/10.1126%2Fscience.1252496 L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 45 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-10-30 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - cosmic dust; cosmochemistry; crystal structure; debris; experimental studies; geochemistry; identification; interplanetary dust; laboratory studies; mineral composition; models; physical properties; spectra; Stardust Mission; X-ray diffraction data; X-ray fluorescence spectra DO - http://dx.doi.org/10.1126/science.1252496 ER - TY - CPAPER T1 - Imaging nutrient uptake in bacterial biofilms using quantum dots T2 - 99th Annual Meeting of the Ecological Society of America (ESA 2014) AN - 1645180128; 6319630 JF - 99th Annual Meeting of the Ecological Society of America (ESA 2014) AU - O'Brien, Sarah AU - Whiteside, Matthew AU - Sholto-Douglas, Deirdre AU - Antonopoulos, Dionysios AU - Boyanov, Maxim AU - Durall, Dan AU - Jones, Melanie AU - Lai, Barry AU - O'Loughlin, Edward AU - Kemner, Kenneth Y1 - 2014/08/10/ PY - 2014 DA - 2014 Aug 10 KW - Quantum dots KW - Uptake KW - Biofilms KW - Nutrient uptake KW - Imaging techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1645180128?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=99th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2014%29&rft.atitle=Imaging+nutrient+uptake+in+bacterial+biofilms+using+quantum+dots&rft.au=O%27Brien%2C+Sarah%3BWhiteside%2C+Matthew%3BSholto-Douglas%2C+Deirdre%3BAntonopoulos%2C+Dionysios%3BBoyanov%2C+Maxim%3BDurall%2C+Dan%3BJones%2C+Melanie%3BLai%2C+Barry%3BO%27Loughlin%2C+Edward%3BKemner%2C+Kenneth&rft.aulast=O%27Brien&rft.aufirst=Sarah&rft.date=2014-08-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=99th+Annual+Meeting+of+the+Ecological+Society+of+America+%28ESA+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://eco.confex.com/eco/2014/webprogram/meeting.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-11-30 N1 - Last updated - 2015-01-14 ER - TY - JOUR T1 - Analytical Formulae for Calculation of X-Ray Detector Solid Angles in the Scanning and Scanning/Transmission Analytical Electron Microscope AN - 1846409720; PQ0003866195 AB - Closed form analytical equations used to calculate the collection solid angle of six common geometries of solid-state X-ray detectors in scanning and scanning/transmission analytical electron microscopy are presented. Using these formulae one can make realistic comparisons of the merits of the different detector geometries in modern electron column instruments. This work updates earlier formulations and adds new detector configurations. JF - Microscopy and Microanalysis AU - Zaluzec, Nestor J AD - Argonne National Laboratory, Electron Microscopy Center, Argonne, IL 60440, USA, Zaluzec@aaem.amc.anl.gov Y1 - 2014/08// PY - 2014 DA - August 2014 SP - 1318 EP - 1326 PB - Cambridge University Press, The Edinburgh Building, Cambridge CB2 2RU United Kingdom VL - 20 IS - 4 SN - 1431-9276, 1431-9276 KW - Biotechnology and Bioengineering Abstracts KW - Mathematical models KW - Scanning KW - Ionizing radiation KW - Microscopes KW - Electron microscopy KW - W 30945:Fermentation & Cell Culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1846409720?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Microscopy+and+Microanalysis&rft.atitle=Analytical+Formulae+for+Calculation+of+X-Ray+Detector+Solid+Angles+in+the+Scanning+and+Scanning%2FTransmission+Analytical+Electron+Microscope&rft.au=Zaluzec%2C+Nestor+J&rft.aulast=Zaluzec&rft.aufirst=Nestor&rft.date=2014-08-01&rft.volume=20&rft.issue=4&rft.spage=1318&rft.isbn=&rft.btitle=&rft.title=Microscopy+and+Microanalysis&rft.issn=14319276&rft_id=info:doi/10.1017%2FS1431927614000956 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-12-01 N1 - Number of references - 16 N1 - Last updated - 2016-12-22 N1 - SubjectsTermNotLitGenreText - Mathematical models; Scanning; Microscopes; Ionizing radiation; Electron microscopy DO - http://dx.doi.org/10.1017/S1431927614000956 ER - TY - JOUR T1 - Ad5/48 hexon oncolytic virus expressing sTGFβRIIFc produces reduced hepatic and systemic toxicities and inhibits prostate cancer bone metastases. AN - 1551017996; 24791939 AB - We are interested in developing oncolytic adenoviruses for the treatment of prostate cancer (PCa) bone metastases. A key limitation of Adenovirus 5 (Ad5) is that upon systemic administration, it produces major liver and systemic toxicities. To address this issue, a chimaeric Ad5/48 adenovirus mHAd.sTβRFc was created. Seven hypervariable regions of Ad5 hexon present in Ad5-based Ad.sTβRFc expressing soluble transforming growth factor beta receptor II-Fc fusion protein (sTGβRIIFc), were replaced by those of Ad48. mHAd.sTβRFc, like Ad.sTβRFc, was replication competent in the human PCa cells, and produced high levels of sTGβRIIFc expression. Compared to Ad.sTβRFc, the systemic delivery of mHAd.sTβRFc in nude mice resulted in much reduced systemic toxicity, and reduced liver sequestration. Ad.sTβRFc produced significant liver necrosis, and increases in alanine transaminase, aspartate transaminase, lactate dehydrogenase, tumor necrosis factor-α, and interleukin-6 levels, while mHAd.sTβRFc produced much reduced responses of these markers. Intravenous delivery of Ad.sTβRFc or mHAd.sTβRFc (5 × 10(10) viral particles/mouse) in nude mice bearing PC-3-luc PCa bone metastases produced inhibition of bone metastases. Moreover, a larger dose of the mHAd.sTβRFc (4 × 10(11) viral particles /mouse) was also effective in inhibiting bone metastases. Thus, mHAd.sTβRFc could be developed for the treatment of PCa bone metastases. JF - Molecular therapy : the journal of the American Society of Gene Therapy AU - Xu, Weidong AU - Zhang, Zhenwei AU - Yang, Yuefeng AU - Hu, Zebin AU - Wang, Chi-Hsiung AU - Morgan, Melanie AU - Wu, Ying AU - Hutten, Ryan AU - Xiao, Xianghui AU - Stock, Stuart AU - Guise, Theresa AU - Prabhakar, Bellur S AU - Brendler, Charles AU - Seth, Prem AD - Gene Therapy Program, Department of Medicine, NorthShore Research Institute, Evanston, Illinois, USA. ; Gene Therapy Program, Department of Surgery, NorthShore Research Institute, Evanston, Illinois, USA. ; Gene Therapy Program, Department of Pathology, NorthShore Research Institute, Evanston, Illinois, USA. ; Image Processing Lab, Center for Advanced Imaging, Department of Radiology, NorthShore Research Institute, Evanston, Illinois, USA. ; Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, USA. ; Department of Molecular Pharmacology and Biological Chemistry, Northwestern University, Chicago, Illinois, USA. ; Department of Medicine, Indiana University, Indianapolis, Indiana, USA. ; Department of Microbiology and Immunology, University of Illinois, Chicago, Illinois, USA. Y1 - 2014/08// PY - 2014 DA - August 2014 SP - 1504 EP - 1517 VL - 22 IS - 8 KW - Capsid Proteins KW - 0 KW - Receptors, Transforming Growth Factor beta KW - Recombinant Fusion Proteins KW - hexon capsid protein, Adenovirus KW - Protein-Serine-Threonine Kinases KW - EC 2.7.11.1 KW - transforming growth factor-beta type II receptor KW - EC 2.7.11.30 KW - Index Medicus KW - Animals KW - Humans KW - Dependovirus -- classification KW - Oncolytic Virotherapy KW - Dependovirus -- genetics KW - Liver -- metabolism KW - Cell Line, Tumor KW - Mice KW - Mice, Nude KW - Recombinant Fusion Proteins -- metabolism KW - Neoplasm Transplantation KW - Recombinant Fusion Proteins -- genetics KW - Male KW - Receptors, Transforming Growth Factor beta -- genetics KW - Genetic Vectors -- administration & dosage KW - Protein-Serine-Threonine Kinases -- metabolism KW - Oncolytic Viruses -- classification KW - Receptors, Transforming Growth Factor beta -- metabolism KW - Protein-Serine-Threonine Kinases -- genetics KW - Capsid Proteins -- genetics KW - Prostatic Neoplasms -- pathology KW - Oncolytic Viruses -- genetics KW - Genetic Vectors -- therapeutic use KW - Bone Neoplasms -- therapy KW - Genetic Vectors -- adverse effects KW - Prostatic Neoplasms -- therapy KW - Bone Neoplasms -- secondary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1551017996?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Molecular+therapy+%3A+the+journal+of+the+American+Society+of+Gene+Therapy&rft.atitle=Ad5%2F48+hexon+oncolytic+virus+expressing+sTGF%CE%B2RIIFc+produces+reduced+hepatic+and+systemic+toxicities+and+inhibits+prostate+cancer+bone+metastases.&rft.au=Xu%2C+Weidong%3BZhang%2C+Zhenwei%3BYang%2C+Yuefeng%3BHu%2C+Zebin%3BWang%2C+Chi-Hsiung%3BMorgan%2C+Melanie%3BWu%2C+Ying%3BHutten%2C+Ryan%3BXiao%2C+Xianghui%3BStock%2C+Stuart%3BGuise%2C+Theresa%3BPrabhakar%2C+Bellur+S%3BBrendler%2C+Charles%3BSeth%2C+Prem&rft.aulast=Xu&rft.aufirst=Weidong&rft.date=2014-08-01&rft.volume=22&rft.issue=8&rft.spage=1504&rft.isbn=&rft.btitle=&rft.title=Molecular+therapy+%3A+the+journal+of+the+American+Society+of+Gene+Therapy&rft.issn=1525-0024&rft_id=info:doi/10.1038%2Fmt.2014.80 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-03-30 N1 - Date created - 2014-08-01 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Gene Ther. 2004 Aug;11(16):1256-63 [15215884] J Virol. 2014 Jan;88(1):345-53 [24155386] Science. 1996 Oct 18;274(5286):373-6 [8832876] J Virol. 1997 Nov;71(11):8798-807 [9343240] Clin Cancer Res. 1995 Aug;1(8):889-97 [9816059] Cancer Treat Rev. 2001 Jun;27(3):165-76 [11417967] Nat Rev Clin Oncol. 2011 Jun;8(6):357-68 [21556025] Curr Gene Ther. 2011 Aug;11(4):307-20 [21453277] Curr Gene Ther. 2011 Aug;11(4):241-58 [21453281] Mol Ther. 2011 Sep;19(9):1609-18 [21712815] Hum Gene Ther. 2011 Sep;22(9):1137-42 [21480822] Lancet. 2012 Jan 7;379(9810):39-46 [22093187] J Clin Endocrinol Metab. 2012 Feb;97(2):360-5 [22162475] Hum Gene Ther. 2012 Aug;23(8):871-82 [22551458] Cancer Gene Ther. 2012 Sep;19(9):630-6 [22744210] Science. 2012 Nov 9;338(6108):795-8 [23019612] Mol Ther. 2012 Dec;20(12):2268-81 [22929662] Mol Ther. 2006 Jan;13(1):108-17 [16198149] Neoplasia. 2006 Jan;8(1):69-78 [16533428] Nature. 2006 May 11;441(7090):239-43 [16625206] Mol Ther. 2006 Jul;14(1):107-17 [16690359] Blood. 2006 Oct 15;108(8):2554-61 [16788098] Hum Gene Ther. 2006 Nov;17(11):1152-60 [17032151] Proc Natl Acad Sci U S A. 2008 Apr 8;105(14):5483-8 [18391209] Nat Med. 2008 Aug;14(8):882-8 [18622403] J Virol. 2008 Dec;82(23):11705-13 [18815305] Nat Clin Pract Urol. 2009 Feb;6(2):76-85 [19198621] Expert Opin Ther Targets. 2009 Feb;13(2):227-34 [19236240] Blood. 2009 Jul 30;114(5):965-71 [19429866] Mol Ther. 2010 Feb;18(2):243-50 [19935777] Expert Opin Biol Ther. 2010 Mar;10(3):353-68 [20132057] Hum Gene Ther. 2010 Jul;21(7):795-805 [19947826] Hum Gene Ther. 2010 Jul;21(7):807-13 [20001452] Hum Gene Ther. 2010 Nov;21(11):1623-9 [20712434] Bone. 2011 Jan;48(1):23-9 [20699127] Ann N Y Acad Sci. 2011 Feb;1218:3-14 [20946581] Lancet. 2011 Mar 5;377(9768):813-22 [21353695] Mol Ther. 2001 Jan;3(1):28-35 [11162308] Gene Ther. 2001 May;8(10):746-59 [11420638] Cancer Gene Ther. 2002 Dec;9(12):979-86 [12522437] J Clin Oncol. 2003 Apr 15;21(8):1498-504 [12697873] Hum Gene Ther. 2003 Nov 20;14(17):1631-41 [14633405] Hum Gene Ther. 2004 May;15(5):433-43 [15144574] PLoS One. 2013;8(1):e54952 [23372800] Cancer Gene Ther. 2013 Feb;20(2):70-6 [23306610] Nat Med. 2013 Apr;19(4):452-7 [23524342] Virology. 2004 Oct 10;328(1):52-61 [15380358] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/mt.2014.80 ER - TY - JOUR T1 - A brief guide to synchrotron radiation-based microtomography in (structural) geology and rock mechanics AN - 1542646782; 2014-048911 AB - This contribution outlines Synchrotron-based X-ray micro-tomography and its potential use in structural geology and rock mechanics. The paper complements several recent reviews of X-ray microtomography. We summarize the general approach to data acquisition, post-processing as well as analysis and thereby aim to provide an entry point for the interested reader. The paper includes tables listing relevant beamlines, a list of all available imaging techniques, and available free and commercial software packages for data visualization and quantification. We highlight potential applications in a review of relevant literature including time-resolved experiments and digital rock physics. The paper concludes with a report on ongoing developments and upgrades at synchrotron facilities to frame the future possibilities for imaging sub-second processes in centimetre-sized samples. Abstract Copyright (2014) Elsevier, B.V. JF - Journal of Structural Geology AU - Fusseis, F AU - Xiao, X AU - Schrank, C AU - De Carlo, F Y1 - 2014/08// PY - 2014 DA - August 2014 SP - 1 EP - 16 PB - Elsevier, Oxford VL - 65 SN - 0191-8141, 0191-8141 KW - tomography KW - digital data KW - three-dimensional models KW - data acquisition KW - structural analysis KW - data processing KW - techniques KW - rock mechanics KW - synchrotron radiation KW - computer programs KW - visualization KW - computed tomography KW - petrography KW - synchrotrons KW - applications KW - instruments KW - 30:Engineering geology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1542646782?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Structural+Geology&rft.atitle=A+brief+guide+to+synchrotron+radiation-based+microtomography+in+%28structural%29+geology+and+rock+mechanics&rft.au=Fusseis%2C+F%3BXiao%2C+X%3BSchrank%2C+C%3BDe+Carlo%2C+F&rft.aulast=Fusseis&rft.aufirst=F&rft.date=2014-08-01&rft.volume=65&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Structural+Geology&rft.issn=01918141&rft_id=info:doi/10.1016%2Fj.jsg.2014.02.005 L2 - http://www.sciencedirect.com/science/journal/01918141 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 158 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2014-07-04 N1 - CODEN - JSGEDY N1 - SubjectsTermNotLitGenreText - applications; computed tomography; computer programs; data acquisition; data processing; digital data; instruments; petrography; rock mechanics; structural analysis; synchrotron radiation; synchrotrons; techniques; three-dimensional models; tomography; visualization DO - http://dx.doi.org/10.1016/j.jsg.2014.02.005 ER - TY - CPAPER T1 - Integration of Commodity and Bioenergy Crops to Boost Conservation and Environmental Sustainability: A Field Design Approach T2 - 69th Annual International Conference of the Soil and Water Conservation Society (SWCS 2014) AN - 1553311808; 6300884 JF - 69th Annual International Conference of the Soil and Water Conservation Society (SWCS 2014) AU - Negri, Cristina Y1 - 2014/07/27/ PY - 2014 DA - 2014 Jul 27 KW - Integration KW - Resource management KW - Conservation KW - Biofuels KW - Crops KW - Sustainability UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1553311808?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=69th+Annual+International+Conference+of+the+Soil+and+Water+Conservation+Society+%28SWCS+2014%29&rft.atitle=Integration+of+Commodity+and+Bioenergy+Crops+to+Boost+Conservation+and+Environmental+Sustainability%3A+A+Field+Design+Approach&rft.au=Negri%2C+Cristina&rft.aulast=Negri&rft.aufirst=Cristina&rft.date=2014-07-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=69th+Annual+International+Conference+of+the+Soil+and+Water+Conservation+Society+%28SWCS+2014%29&rft.issn=&rft_id=info:doi/ L2 - http://www.swcs.org/documents/filelibrary/14ac/2014_SWCS_Full_Conference_Agenda_0A6100C9DDCC7.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-07-31 N1 - Last updated - 2014-08-15 ER - TY - JOUR T1 - Magma redox and structural controls on iron isotope variations in Earth's mantle and crust AN - 1545407540; 2014-055575 AB - The heavy iron isotopic composition of Earth's crust relative to chondrites has been explained by vaporization during the Moon-forming impact, equilibrium partitioning between metal and silicate at core-mantle-boundary conditions, or partial melting and magma differentiation. The latter view is supported by the observed difference in the iron isotopic compositions of MORBS and peridotites. However, the precise controls on iron isotope variations in igneous rocks remain unknown. Here, we show that equilibrium iron isotope fractionation is mainly controlled by redox (Fe (super 3+) /Fe (sub tot) ratio) and structural (e.g., polymerization) conditions in magmas. We measured, for the first time, the mean force constants of iron bonds in silicate glasses by synchrotron Nuclear Resonant Inelastic X-ray Scattering (NRIXS, also known as Nuclear Resonance Vibrational Spectroscopy - NRVS, or Nuclear Inelastic Scattering - NIS). The same samples were studied by conventional Mossbauer and X-ray Absorption Near Edge Structure (XANES) spectroscopy. The NRIXS results reveal a +0.2 to +0.4 ppm equilibrium fractionation on (super 56) Fe/ (super 54) Fe ratio between Fe (super 2+) and Fe (super 3+) end-members in basalt, andesite, and dacite glasses at magmatic temperatures. These first measurements can already explain approximately 1/3 of the iron isotopic shift measured in MORBs relative to their source. Further work will be required to investigate how pressure, temperature, and structural differences between melts and glasses affect equilibrium fractionation factors. In addition, large fractionation is also found between rhyolitic glass and commonly occurring oxide and silicate minerals. This fractionation reflects mainly changes in the coordination environment of Fe (super 2+) in rhyolites relative to less silicic magmas and mantle minerals, as also seen by XANES. We provide a new calibration of XANES features vs. Fe (super 3+) /Fe (sub tot) ratio determinations by Mossbauer to estimate Fe (super 3+) /Fe (sub tot) ratio in situ in glasses of basaltic, andesitic, dacitic, and rhyolitic compositions. Modeling of magma differentiation using rhyolite-MELTS shows that iron structural changes in silicic magmas can explain the heavy iron isotopic compositions of granitoids and rhyolites. This study demonstrates that iron stable isotopes can help reveal planetary redox conditions and igneous processes. Other heterovalent elements such as Ti, V, Eu, Cr, Ce, or U may show similar isotopic variations in bulk rocks and individual minerals, which could be used to establish past and present redox condition in the mantles of Earth and other planets. Abstract Copyright (2014) Elsevier, B.V. JF - Earth and Planetary Science Letters AU - Dauphas, N AU - Roskosz, M AU - Alp, E E AU - Neuville, D R AU - Hu, M Y AU - Sio, C K AU - Tissot, F L H AU - Zhao, J AU - Tissandier, L AU - Medard, E AU - Cordier, C Y1 - 2014/07/15/ PY - 2014 DA - 2014 Jul 15 SP - 127 EP - 140 PB - Elsevier, Amsterdam VL - 398 SN - 0012-821X, 0012-821X KW - silicates KW - isotope fractionation KW - andesites KW - volcanic rocks KW - glasses KW - isotopes KW - igneous rocks KW - mantle KW - olivine group KW - calibration KW - stable isotopes KW - nuclear resonant ineastic X-ray scattering KW - iron KW - XANES spectra KW - synchrotron radiation KW - ferric iron KW - olivine KW - basalts KW - orthosilicates KW - dacites KW - spectra KW - Eh KW - rhyolites KW - X-ray spectra KW - ferrous iron KW - nesosilicates KW - NRIXS KW - metals KW - magmas KW - mid-ocean ridge basalts KW - crust KW - 02D:Isotope geochemistry KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1545407540?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Earth+and+Planetary+Science+Letters&rft.atitle=Magma+redox+and+structural+controls+on+iron+isotope+variations+in+Earth%27s+mantle+and+crust&rft.au=Dauphas%2C+N%3BRoskosz%2C+M%3BAlp%2C+E+E%3BNeuville%2C+D+R%3BHu%2C+M+Y%3BSio%2C+C+K%3BTissot%2C+F+L+H%3BZhao%2C+J%3BTissandier%2C+L%3BMedard%2C+E%3BCordier%2C+C&rft.aulast=Dauphas&rft.aufirst=N&rft.date=2014-07-15&rft.volume=398&rft.issue=&rft.spage=127&rft.isbn=&rft.btitle=&rft.title=Earth+and+Planetary+Science+Letters&rft.issn=0012821X&rft_id=info:doi/10.1016%2Fj.epsl.2014.04.033 L2 - http://www.sciencedirect.com/science/journal/0012821X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 99 N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-07-17 N1 - CODEN - EPSLA2 N1 - SubjectsTermNotLitGenreText - andesites; basalts; calibration; crust; dacites; Eh; ferric iron; ferrous iron; glasses; igneous rocks; iron; isotope fractionation; isotopes; magmas; mantle; metals; mid-ocean ridge basalts; nesosilicates; NRIXS; nuclear resonant ineastic X-ray scattering; olivine; olivine group; orthosilicates; rhyolites; silicates; spectra; stable isotopes; synchrotron radiation; volcanic rocks; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.epsl.2014.04.033 ER - TY - JOUR T1 - Modern and future nuclear fuel cycles and the relationship with nuclear waste management AN - 1717490024; PQ0001958866 AB - Discussions of nuclear fuel cycles and nuclear waste typically focus on very long-term radiological hazards and on concerns over proliferation of nuclear weapons. While there are technical solutions to address the radiological hazards for any of the various feasible fuel cycles, there are substantial practical differences that may influence both the cost and political acceptability of waste disposal options. Only full recycle reduces the actual long-term hazard in a major way. Efficient use of the energy content of uranium will eventually require some form of recycle of used nuclear fuel, but with known recoverable uranium resources, this is not an urgent concern. Proliferation concerns differ among the various fuel cycles and each presents its own challenges, but ultimately, the differences in proliferation risks are more political than technical. At this point, the actual cost of any of the options for closing the fuel cycle is not adequately known to provide guidance. WIREs Energy Environ 2014, 3:323-329. doi: 10.1002/wene.99 For further resources related to this article, please visit the WIREs website . JF - Wiley Interdisciplinary Reviews: Energy and Environment AU - Hannum, William H AD - Argonne National Laboratory, Argonne, IL USA. Y1 - 2014/07// PY - 2014 DA - Jul 2014 SP - 323 EP - 329 PB - John Wiley & Sons, Inc., 111 River Street Hoboken NJ 07030 United States VL - 3 IS - 4 SN - 2041-8396, 2041-8396 KW - Risk Abstracts KW - Politics KW - Fuels KW - Radioactive wastes KW - Acceptability KW - Nuclear weapons KW - Weapons KW - Uranium KW - Energy KW - Reviews KW - Nuclear fuels KW - Nuclear energy KW - Waste disposal KW - R2 23090:Policy and planning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1717490024?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ariskabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wiley+Interdisciplinary+Reviews%3A+Energy+and+Environment&rft.atitle=Modern+and+future+nuclear+fuel+cycles+and+the+relationship+with+nuclear+waste+management&rft.au=Hannum%2C+William+H&rft.aulast=Hannum&rft.aufirst=William&rft.date=2014-07-01&rft.volume=3&rft.issue=4&rft.spage=323&rft.isbn=&rft.btitle=&rft.title=Wiley+Interdisciplinary+Reviews%3A+Energy+and+Environment&rft.issn=20418396&rft_id=info:doi/10.1002%2Fwene.99 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-09-01 N1 - Last updated - 2015-11-16 N1 - SubjectsTermNotLitGenreText - Weapons; Politics; Reviews; Energy; Uranium; Fuels; Nuclear fuels; Nuclear weapons; Acceptability; Radioactive wastes; Nuclear energy; Waste disposal DO - http://dx.doi.org/10.1002/wene.99 ER - TY - JOUR T1 - Downscaling with a nested regional climate model in near-surface fields over the contiguous United States AN - 1560128235; 20548754 AB - The Weather Research and Forecasting (WRF) model is used for dynamic downscaling of 2.5-degree National Centers for Environmental Prediction-U.S. Department of Energy Reanalysis II (NCEP-R2) data for 1980-2010 at 12km resolution over most of North America. The model's performance for surface air temperature and precipitation is evaluated by comparison with high-resolution observational data sets. The model's ability to add value is investigated by comparison with NCEP-R2 data and a 50km regional climate simulation. The causes for major model bias are studied through additional sensitivity experiments with various model setup/integration approaches and physics representations. The WRF captures the main features of the spatial patterns and annual cycles of air temperature and precipitation over most of the contiguous United States. However, simulated air temperatures over the south central region and precipitation over the Great Plains and the Southwest have significant biases. Allowing longer spin-up time, reducing the nudging strength, or replacing the WRF Single-Moment six-class microphysics with Morrison microphysics reduces the bias over some subregions. However, replacing the Grell-Devenyi cumulus parameterization with Kain-Fritsch shows no improvement. The 12km simulation does add value above the NCEP-R2 data and the 50km simulation over mountainous and coastal zones. Key Points * A high-resolution model captures variabilities of temperature and precipitation * The simulation is shown to add value above coarse-resolution data * Simulation sensitivities to model setup and physics schemes are explored JF - Journal of Geophysical Research: Atmospheres AU - Wang, Jiali AU - Kotamarthi, Veerabhadra R AD - Environmental Science Division, Argonne National Laboratory, Argonne, Illinois, USA. Y1 - 2014/07// PY - 2014 DA - July 2014 SP - 8778 EP - 8797 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD United Kingdom VL - 119 IS - 14 SN - 2169-897X, 2169-897X KW - Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE); Aerospace & High Technology Database (AH) KW - Mathematical models KW - Computer simulation KW - Coastal KW - Regional KW - Precipitation KW - Microphysics KW - Bias KW - Parametrization UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560128235?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geophysical+Research%3A+Atmospheres&rft.atitle=Downscaling+with+a+nested+regional+climate+model+in+near-surface+fields+over+the+contiguous+United+States&rft.au=Wang%2C+Jiali%3BKotamarthi%2C+Veerabhadra+R&rft.aulast=Wang&rft.aufirst=Jiali&rft.date=2014-07-01&rft.volume=119&rft.issue=14&rft.spage=8778&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geophysical+Research%3A+Atmospheres&rft.issn=2169897X&rft_id=info:doi/10.1002%2F2014JD021696 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2017-01-05 DO - http://dx.doi.org/10.1002/2014JD021696 ER - TY - JOUR T1 - Fe(II)- and sulfide-facilitated reduction of (super 99) Tc(VII)O (sub 4-) in microbially reduced hyporheic zone sediments AN - 1553087981; 2014-062187 AB - Redox-reactive, biogeochemical phases generated by reductive microbial activity in hyporheic zone sediments from a dynamic groundwater-river interaction zone were evaluated for their ability to reduce soluble pertechnetate [ (super 99) Tc(VII)O (sub 4) (super -) ] to less soluble Tc(IV). The sediments were bioreduced by indigenous microorganisms that were stimulated by organic substrate addition in synthetic groundwater with or without sulfate. In most treatments, 20mu molL (super -1) initial aqueous Tc(VII) was reduced to near or below detection (3.82X10 (super -9) molL (super -1) ) over periods of days to months in suspensions of variable solids concentrations. Native sediments containing significant lithogenic Fe(II) in various phases were, in contrast, unreactive with Tc(VII). The reduction rates in the bioreduced sediments increased with increases in sediment mass, in proportion to weak acid-extractable Fe(II) and sediment-associated sulfide (AVS). The rate of Tc(VII) reduction was first order with respect to both aqueous Tc(VII) concentration and sediment mass, but correlations between specific reductant concentrations and reaction rate were not found. X-ray microprobe measurements revealed a strong correlation between Tc hot spots and Fe-containing mineral particles in the sediment. However, only a portion of Fe-containing particles were Tc-hosts. The Tc-hot spots displayed a chemical signature (by EDXRF) similar to pyroxene. The application of autoradiography and electron microprobe allowed further isolation of Tc-containing particles that were invariably found to be ca 100mu m aggregates of primary mineral material embedded within a fine-grained phyllosilicate matrix. EXAFS spectroscopy revealed that the Tc(IV) within these were a combination of a Tc(IV)O (sub 2) -like phase and Tc(IV)-Fe surface clusters, with a significant fraction of a TcS (sub x) -like phase in sediments incubated with SO (sub 4) (super 2-) . AVS was implicated as a more selective reductant at low solids concentration even though its concentration was below that required for stoichiometric reduction of Tc(VII). These results demonstrate that composite mineral aggregates may be redox reaction centers in coarse-textured hyporheic zone sediments regardless of the dominant anoxic biogeochemical processes. Abstract Copyright (2014) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Lee, Ji-Hoon AU - Zachara, John M AU - Fredrickson, James K AU - Heald, Steve M AU - McKinley, James P AU - Plymale, Andrew E AU - Resch, Charles T AU - Moore, Dean A Y1 - 2014/07/01/ PY - 2014 DA - 2014 Jul 01 SP - 247 EP - 264 PB - Elsevier, New York, NY VL - 136 SN - 0016-7037, 0016-7037 KW - United States KW - aggregate KW - rivers and streams KW - iron KW - ground water KW - XANES spectra KW - reactivity KW - sediments KW - X-ray fluorescence spectra KW - spectra KW - reduction KW - mineral assemblages KW - Eh KW - experimental studies KW - Columbia River KW - biochemistry KW - surface water KW - hyporheic zone KW - X-ray spectra KW - biogenic processes KW - microscope methods KW - metals KW - mathematical methods KW - EXAFS data KW - synchrotrons KW - sulfides KW - SEM data KW - microorganisms KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1553087981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Fe%28II%29-+and+sulfide-facilitated+reduction+of+%28super+99%29+Tc%28VII%29O+%28sub+4-%29+in+microbially+reduced+hyporheic+zone+sediments&rft.au=Lee%2C+Ji-Hoon%3BZachara%2C+John+M%3BFredrickson%2C+James+K%3BHeald%2C+Steve+M%3BMcKinley%2C+James+P%3BPlymale%2C+Andrew+E%3BResch%2C+Charles+T%3BMoore%2C+Dean+A&rft.aulast=Lee&rft.aufirst=Ji-Hoon&rft.date=2014-07-01&rft.volume=136&rft.issue=&rft.spage=247&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.08.017 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 51 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-08-14 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - aggregate; biochemistry; biogenic processes; Columbia River; Eh; EXAFS data; experimental studies; ground water; hyporheic zone; iron; mathematical methods; metals; microorganisms; microscope methods; mineral assemblages; reactivity; reduction; rivers and streams; sediments; SEM data; spectra; sulfides; surface water; synchrotrons; United States; X-ray fluorescence spectra; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.gca.2013.08.017 ER - TY - JOUR T1 - Sb (super 5+) and Sb (super 3+) substitution in segnitite; a new sink for As and Sb in the environment and implications for acid mine drainage AN - 1549616905; 2014-058170 AB - A sample of Sb-rich segnitite from the Black Pine mine, Montana, U.S.A., has been studied by microprobe analyses, single-crystal X-ray diffraction, and mu -EXAFS and XANES spectroscopy. Linear combination fitting of the spectroscopic data provided Sb (super 5+) :Sb (super 3+) = 85(2):15(2), where Sb (super 5+) is in octahedral coordination substituting for Fe (super 3+) and Sb (super 3+) is in tetrahedral coordination substituting for As (super 5+) . Based upon this Sb (super 5+) :Sb (super 3+) ratio, the microprobe analyses yielded the empirical formula Pb (sub 1.02) H (sub 1.02) (Fe (super 3+) (sub 2.36) Sb (super 5+) (sub 0.41) Cu (super 2+) (sub 0.27) ) (sub Sigma 3.04) (As (super 5+ ) (sub 1.78) Sb (super 3+) (sub 0.07) S (super 6+) (sub 0.02) ) (sub Sigma 1.88) O (sub 8) (OH) (sub 6.00) . The crystal structure refinement and bond valence analysis are consistent with these cation site assignments. The formation of Sb-rich segnitite opens new possibilities for Sb sinks within the supergene zone. Segnitite may, in fact, be an ideal host for the sequestering of several toxic elements for pH < 2. At higher pH values, As is more likely to be incorporated into schwertmannite and ferrihydrite. JF - American Mineralogist AU - Mills, Stuart J AU - Etschmann, Barbara AU - Kampf, Anthony R AU - Poirier, Glenn AU - Newville, Matthew Y1 - 2014/07// PY - 2014 DA - July 2014 SP - 1355 EP - 1359 PB - Mineralogical Society of America, Washington, DC VL - 99 IS - 7 SN - 0003-004X, 0003-004X KW - United States KW - segnitite KW - X-ray diffraction data KW - substitution KW - oxidation zone KW - crystal structure KW - XANES spectra KW - oxides KW - valency KW - spectra KW - pH KW - supergene processes KW - antimony KW - acid mine drainage KW - sulfates KW - arsenic KW - pollution KW - Granite County Montana KW - ferrihydrite KW - X-ray spectra KW - Montana KW - Black Pine Mine KW - alunite KW - single-crystal method KW - schwertmannite KW - metals KW - EXAFS data KW - formula KW - 22:Environmental geology KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549616905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Sb+%28super+5%2B%29+and+Sb+%28super+3%2B%29+substitution+in+segnitite%3B+a+new+sink+for+As+and+Sb+in+the+environment+and+implications+for+acid+mine+drainage&rft.au=Mills%2C+Stuart+J%3BEtschmann%2C+Barbara%3BKampf%2C+Anthony+R%3BPoirier%2C+Glenn%3BNewville%2C+Matthew&rft.aulast=Mills&rft.aufirst=Stuart&rft.date=2014-07-01&rft.volume=99&rft.issue=7&rft.spage=1355&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam.2014.4834 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2014-01-01 N1 - Number of references - 48 N1 - PubXState - DC N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2014-07-31 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - acid mine drainage; alunite; antimony; arsenic; Black Pine Mine; crystal structure; EXAFS data; ferrihydrite; formula; Granite County Montana; metals; Montana; oxidation zone; oxides; pH; pollution; schwertmannite; segnitite; single-crystal method; spectra; substitution; sulfates; supergene processes; United States; valency; X-ray diffraction data; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.2138/am.2014.4834 ER - TY - JOUR T1 - Metagenomics reveals sediment microbial community response to Deepwater Horizon oil spill. AN - 1540130082; 24451203 AB - The Deepwater Horizon (DWH) oil spill in the spring of 2010 resulted in an input of ∼4.1 million barrels of oil to the Gulf of Mexico; >22% of this oil is unaccounted for, with unknown environmental consequences. Here we investigated the impact of oil deposition on microbial communities in surface sediments collected at 64 sites by targeted sequencing of 16S rRNA genes, shotgun metagenomic sequencing of 14 of these samples and mineralization experiments using (14)C-labeled model substrates. The 16S rRNA gene data indicated that the most heavily oil-impacted sediments were enriched in an uncultured Gammaproteobacterium and a Colwellia species, both of which were highly similar to sequences in the DWH deep-sea hydrocarbon plume. The primary drivers in structuring the microbial community were nitrogen and hydrocarbons. Annotation of unassembled metagenomic data revealed the most abundant hydrocarbon degradation pathway encoded genes involved in degrading aliphatic and simple aromatics via butane monooxygenase. The activity of key hydrocarbon degradation pathways by sediment microbes was confirmed by determining the mineralization of (14)C-labeled model substrates in the following order: propylene glycol, dodecane, toluene and phenanthrene. Further, analysis of metagenomic sequence data revealed an increase in abundance of genes involved in denitrification pathways in samples that exceeded the Environmental Protection Agency (EPA)'s benchmarks for polycyclic aromatic hydrocarbons (PAHs) compared with those that did not. Importantly, these data demonstrate that the indigenous sediment microbiota contributed an important ecosystem service for remediation of oil in the Gulf. However, PAHs were more recalcitrant to degradation, and their persistence could have deleterious impacts on the sediment ecosystem. JF - The ISME journal AU - Mason, Olivia U AU - Scott, Nicole M AU - Gonzalez, Antonio AU - Robbins-Pianka, Adam AU - Bælum, Jacob AU - Kimbrel, Jeffrey AU - Bouskill, Nicholas J AU - Prestat, Emmanuel AU - Borglin, Sharon AU - Joyner, Dominique C AU - Fortney, Julian L AU - Jurelevicius, Diogo AU - Stringfellow, William T AU - Alvarez-Cohen, Lisa AU - Hazen, Terry C AU - Knight, Rob AU - Gilbert, Jack A AU - Jansson, Janet K AD - 1] Department of Earth, Ocean and Atmospheric Science, Florida State University, Tallahassee, FL, USA [2] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA. ; 1] Institute for Genomic and Systems Biology, Argonne National Laboratory, Lemont, IL, USA [2] Department of Ecology and Evolution, University of Chicago, Chicago, IL, USA. ; Biofrontiers Institute, University of Colorado at Boulder, Boulder, CO, USA. ; Department of Computer Science, University of Colorado at Boulder, Boulder, CO, USA. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] The Technical University of Denmark, Center for Biological Sequence Analysis, Kongens Lyngby, Denmark. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Deconstruction Division, Joint Bioenergy Institute (JBEI), Emeryville, CA, USA. ; Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Civil and Environmental Engineering Department, University of Tennessee, Knoxville, TN, USA. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Laboratório de Genética Microbiana, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Ecological Engineering Research Program, School of Engineering & Computer Science, University of the Pacific, Stockton, CA, USA. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Civil and Environmental Engineering Department, University of California, Berkeley, CA, USA. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Civil and Environmental Engineering Department, University of Tennessee, Knoxville, TN, USA [3] Biological Sciences Division, Oak Ridge National Lab, Oak Ridge, TN, USA. ; 1] Howard Hughes Medical Institute, University of Colorado at Boulder, Boulder, CO, USA [2] Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, USA. ; 1] Earth Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA [2] Deconstruction Division, Joint Bioenergy Institute (JBEI), Emeryville, CA, USA [3] Department of Plant and Microbial Biology, University of California, Berkeley, CA, USA. Y1 - 2014/07// PY - 2014 DA - July 2014 SP - 1464 EP - 1475 VL - 8 IS - 7 KW - Bacterial Proteins KW - 0 KW - Carbon Radioisotopes KW - Polycyclic Aromatic Hydrocarbons KW - RNA, Bacterial KW - RNA, Ribosomal, 16S KW - Mixed Function Oxygenases KW - EC 1.- KW - Nitrogen KW - N762921K75 KW - Index Medicus KW - Ecosystem KW - Mixed Function Oxygenases -- metabolism KW - Gene Expression KW - Seawater -- microbiology KW - Polycyclic Aromatic Hydrocarbons -- metabolism KW - Nitrogen -- metabolism KW - Gulf of Mexico KW - Mixed Function Oxygenases -- genetics KW - Bacterial Proteins -- genetics KW - RNA, Ribosomal, 16S -- genetics KW - Petroleum Pollution KW - Metagenomics KW - Gammaproteobacteria -- metabolism KW - Gammaproteobacteria -- genetics KW - Alteromonadaceae -- genetics KW - Bacterial Proteins -- metabolism KW - Alteromonadaceae -- metabolism KW - RNA, Bacterial -- genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1540130082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+ISME+journal&rft.atitle=Metagenomics+reveals+sediment+microbial+community+response+to+Deepwater+Horizon+oil+spill.&rft.au=Mason%2C+Olivia+U%3BScott%2C+Nicole+M%3BGonzalez%2C+Antonio%3BRobbins-Pianka%2C+Adam%3BB%C3%A6lum%2C+Jacob%3BKimbrel%2C+Jeffrey%3BBouskill%2C+Nicholas+J%3BPrestat%2C+Emmanuel%3BBorglin%2C+Sharon%3BJoyner%2C+Dominique+C%3BFortney%2C+Julian+L%3BJurelevicius%2C+Diogo%3BStringfellow%2C+William+T%3BAlvarez-Cohen%2C+Lisa%3BHazen%2C+Terry+C%3BKnight%2C+Rob%3BGilbert%2C+Jack+A%3BJansson%2C+Janet+K&rft.aulast=Mason&rft.aufirst=Olivia&rft.date=2014-07-01&rft.volume=8&rft.issue=7&rft.spage=1464&rft.isbn=&rft.btitle=&rft.title=The+ISME+journal&rft.issn=1751-7370&rft_id=info:doi/10.1038%2Fismej.2013.254 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2014-09-23 N1 - Date created - 2014-06-24 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Appl Environ Microbiol. 2007 Aug;73(16):5261-7 [17586664] FEMS Microbiol Lett. 2003 Oct 10;227(1):101-6 [14568154] Bioinformatics. 2010 Jan 15;26(2):266-7 [19914921] Bioinformatics. 2010 Mar 15;26(6):715-21 [20130030] Nat Methods. 2010 May;7(5):335-6 [20383131] Bioinformatics. 2010 Oct 1;26(19):2460-1 [20709691] Science. 2010 Oct 8;330(6001):204-8 [20736401] Science. 2010 Oct 8;330(6001):208-11 [20847236] Science. 2011 Jan 21;331(6015):312-5 [21212320] Proc Natl Acad Sci U S A. 2011 Mar 15;108 Suppl 1:4516-22 [20534432] Appl Environ Microbiol. 2011 Nov;77(21):7856-60 [21926219] ISME J. 2012 Mar;6(3):610-8 [22134646] ISME J. 2012 Aug;6(8):1621-4 [22402401] Appl Environ Microbiol. 2012 Aug;78(15):5305-12 [22635998] ISME J. 2012 Sep;6(9):1715-27 [22717885] Environ Microbiol. 2012 Sep;14(9):2405-16 [22616650] Environ Microbiol. 2012 Oct;14(10):2689-710 [22882476] Proc Natl Acad Sci U S A. 2012 Dec 11;109(50):20292-7 [21969552] Microbiologyopen. 2013 Jun;2(3):492-504 [23568850] PLoS One. 2013;8(8):e70540 [23950956] ISME J. 2013 Nov;7(11):2091-104 [23788333] ISME J. 2013 Dec;7(12):2315-29 [23902988] Nucleic Acids Res. 1999 Jan 1;27(1):29-34 [9847135] Environ Microbiol. 2005 Feb;7(2):179-90 [15658985] Proc Natl Acad Sci U S A. 2005 Aug 2;102(31):10913-8 [16043709] Appl Environ Microbiol. 2002 Apr;68(4):1994-2007 [11916723] BMC Bioinformatics. 2008;9:386 [18803844] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/ismej.2013.254 ER - TY - JOUR T1 - Molecular basis for disruption of E-cadherin adhesion by botulinum neurotoxin A complex. AN - 1539473846; 24948737 AB - How botulinum neurotoxins (BoNTs) cross the host intestinal epithelial barrier in foodborne botulism is poorly understood. Here, we present the crystal structure of a clostridial hemagglutinin (HA) complex of serotype BoNT/A bound to the cell adhesion protein E-cadherin at 2.4 angstroms. The HA complex recognizes E-cadherin with high specificity involving extensive intermolecular interactions and also binds to carbohydrates on the cell surface. Binding of the HA complex sequesters E-cadherin in the monomeric state, compromising the E-cadherin-mediated intercellular barrier and facilitating paracellular absorption of BoNT/A. We reconstituted the complete 14-subunit BoNT/A complex using recombinantly produced components and demonstrated that abolishing either E-cadherin- or carbohydrate-binding of the HA complex drastically reduces oral toxicity of BoNT/A complex in vivo. Together, these studies establish the molecular mechanism of how HAs contribute to the oral toxicity of BoNT/A. JF - Science (New York, N.Y.) AU - Lee, Kwangkook AU - Zhong, Xiaofen AU - Gu, Shenyan AU - Kruel, Anna Magdalena AU - Dorner, Martin B AU - Perry, Kay AU - Rummel, Andreas AU - Dong, Min AU - Jin, Rongsheng AD - Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA. ; Department of Microbiology and Immunobiology, Harvard Medical School, Division of Neuroscience, New England Primate Research Center, Southborough, MA 01772, USA. ; Institut für Toxikologie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany. ; Centre for Biological Threats and Special Pathogens-Biological Toxins (ZBS3), Robert Koch-Institut, Nordufer 20, 13353 Berlin, Germany. ; Northeastern Collaborative Access Team (NE-CAT) and Department of Chemistry and Chemical Biology, Cornell University, Building 436E, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, USA. ; Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA. r.jin@uci.edu. Y1 - 2014/06/20/ PY - 2014 DA - 2014 Jun 20 SP - 1405 EP - 1410 VL - 344 IS - 6190 KW - Cadherins KW - 0 KW - Hemagglutinins KW - Recombinant Proteins KW - Botulinum Toxins, Type A KW - EC 3.4.24.69 KW - Index Medicus KW - Animals KW - Protein Structure, Secondary KW - Gene Knockdown Techniques KW - Humans KW - Mice KW - HT29 Cells KW - Crystallography, X-Ray KW - Recombinant Proteins -- chemistry KW - Hemagglutinins -- chemistry KW - Cadherins -- chemistry KW - Botulinum Toxins, Type A -- genetics KW - Hemagglutinins -- genetics KW - Cadherins -- genetics KW - Botulinum Toxins, Type A -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1539473846?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28New+York%2C+N.Y.%29&rft.atitle=Molecular+basis+for+disruption+of+E-cadherin+adhesion+by+botulinum+neurotoxin+A+complex.&rft.au=Lee%2C+Kwangkook%3BZhong%2C+Xiaofen%3BGu%2C+Shenyan%3BKruel%2C+Anna+Magdalena%3BDorner%2C+Martin+B%3BPerry%2C+Kay%3BRummel%2C+Andreas%3BDong%2C+Min%3BJin%2C+Rongsheng&rft.aulast=Lee&rft.aufirst=Kwangkook&rft.date=2014-06-20&rft.volume=344&rft.issue=6190&rft.spage=1405&rft.isbn=&rft.btitle=&rft.title=Science+%28New+York%2C+N.Y.%29&rft.issn=1095-9203&rft_id=info:doi/10.1126%2Fscience.1253823 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2014-07-08 N1 - Date created - 2014-06-20 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 4QD2; PDB N1 - SuppNotes - Cited By: Cold Spring Harb Perspect Biol. 2009 Dec;1(6):a002899 [20457565] Nat Struct Mol Biol. 2010 Mar;17(3):348-57 [20190754] Structure. 2011 Feb 9;19(2):244-56 [21300292] J Cell Biol. 2011 Mar 21;192(6):907-17 [21422226] Acta Crystallogr D Biol Crystallogr. 2011 Apr;67(Pt 4):271-81 [21460445] Nat Struct Mol Biol. 2011 Jun;18(6):693-700 [21572446] Mol Syst Biol. 2011;7:539 [21988835] FEBS J. 2011 Dec;278(23):4506-15 [21624052] Science. 2012 Feb 24;335(6071):977-81 [22363010] Trends Cell Biol. 2012 Jun;22(6):299-310 [22555008] Curr Top Microbiol Immunol. 2013;364:1-20 [23239346] Curr Top Microbiol Immunol. 2013;364:45-59 [23239348] Toxicon. 2013 Dec 1;75:108-21 [23817019] PLoS Pathog. 2013;9(10):e1003690 [24130488] J Biol Chem. 2013 Dec 6;288(49):35617-25 [24165130] J Virol. 2001 Dec;75(23):11834-50 [11689665] Biochem Biophys Res Commun. 2002 Mar 29;292(2):434-40 [11906181] Science. 2002 May 17;296(5571):1308-13 [11964443] Protein Sci. 2002 Jun;11(6):1285-99 [12021428] Cell. 2002 Dec 13;111(6):825-36 [12526809] Acta Crystallogr D Biol Crystallogr. 2003 Jul;59(Pt 7):1131-7 [12832755] J Appl Microbiol. 1998 Jan;84(1):5-17 [15244052] J Pharmacol Exp Ther. 2004 Aug;310(2):633-41 [15140915] Infect Immun. 1977 Apr;16(1):107-9 [326664] Pharmacol Ther. 1982;19(2):165-94 [6763707] Infect Immun. 1984 Feb;43(2):487-90 [6693168] Infect Immun. 1996 May;64(5):1589-94 [8613365] Biochemistry. 1997 Jun 24;36(25):7697-705 [9201910] Bioinformatics. 1999 Apr;15(4):305-8 [10320398] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] J Mol Biol. 2007 Oct 19;373(2):401-11 [17850815] Cell Microbiol. 2008 Feb;10(2):355-64 [17868282] Cell Microbiol. 2008 Feb;10(2):375-87 [17900298] Nature. 1992 Jan 30;355(6359):472-5 [18481394] Toxicology. 2008 Jul 30;249(2-3):123-9 [18538461] Appl Environ Microbiol. 2010 Jan;76(1):40-7 [19915042] Acta Crystallogr D Biol Crystallogr. 2010 Jan;66(Pt 1):12-21 [20057044] Cold Spring Harb Perspect Biol. 2009 Sep;1(3):a003053 [20066110] Acta Crystallogr D Biol Crystallogr. 2010 Feb;66(Pt 2):213-21 [20124702] J Cell Biol. 2010 May 17;189(4):691-700 [20457762] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1126/science.1253823 ER - TY - JOUR T1 - Three-dimensional microstructural imaging of sulfur poisoning-induced degradation in a Ni-YSZ anode of solid oxide fuel cells. AN - 1534794582; 24912978 AB - Following exposure to ppm-level hydrogen sulfide at elevated temperatures, a section of a solid oxide fuel cell (SOFC) Ni-YSZ anode was examined using a combination of synchrotron-based x-ray nanotomography and x-ray fluorescence techniques. While fluorescence measurements provided elemental identification and coarse spatial mapping, x-ray nanotomography was used to map the detailed 3-D spatial distribution of Ni, YSZ, and a nickel-sulfur poisoning phase. The nickel-sulfur layer was found to form a scale covering most of the exposed nickel surface, blocking most fuel reformation and hydrogen oxidation reaction sites. Although the exposure conditions precluded the ability to develop a detailed kinetic description of the nickel-sulfur phase formation, the results provide strong evidence of the detrimental effects of 100 ppm hydrogen sulfide on typical Ni-YSZ anode materials. JF - Scientific reports AU - Harris, William M AU - Lombardo, Jeffrey J AU - Nelson, George J AU - Lai, Barry AU - Wang, Steve AU - Vila-Comamala, Joan AU - Liu, Mingfei AU - Liu, Meilin AU - Chiu, Wilson K S AD - 1] HeteroFoaM Center, a DOE Energy Frontier Research Center [2] Department of Mechanical Engineering, University of Connecticut. ; Advanced Photon Source, Argonne National Laboratory. ; 1] HeteroFoaM Center, a DOE Energy Frontier Research Center [2] School of Materials Science and Engineering, Georgia Institute of Technology. Y1 - 2014/06/10/ PY - 2014 DA - 2014 Jun 10 SP - 5246 VL - 4 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1534794582?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Scientific+reports&rft.atitle=Three-dimensional+microstructural+imaging+of+sulfur+poisoning-induced+degradation+in+a+Ni-YSZ+anode+of+solid+oxide+fuel+cells.&rft.au=Harris%2C+William+M%3BLombardo%2C+Jeffrey+J%3BNelson%2C+George+J%3BLai%2C+Barry%3BWang%2C+Steve%3BVila-Comamala%2C+Joan%3BLiu%2C+Mingfei%3BLiu%2C+Meilin%3BChiu%2C+Wilson+K+S&rft.aulast=Harris&rft.aufirst=William&rft.date=2014-06-10&rft.volume=4&rft.issue=&rft.spage=5246&rft.isbn=&rft.btitle=&rft.title=Scientific+reports&rft.issn=2045-2322&rft_id=info:doi/10.1038%2Fsrep05246 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-04-19 N1 - Date created - 2014-06-10 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: J Synchrotron Radiat. 2012 Sep;19(Pt 5):789-96 [22898959] Nat Commun. 2011;2:357 [21694705] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/srep05246 ER - TY - JOUR T1 - On silicon group elements ejected by supernovae Type IA AN - 1784735682; 2016-036984 AB - There is evidence that the peak brightness of a Type Ia supernova is affected by the electron fraction Y (sub e) at the time of the explosion. The electron fraction is set by the aboriginal composition of the white dwarf and the reactions that occur during the pre-explosive convective burning. To date, determining the makeup of the white dwarf progenitor has relied on indirect proxies, such as the average metallicity of the host stellar population. In this paper, we present analytical calculations supporting the idea that the electron fraction of the progenitor systematically influences the nucleosynthesis of silicon group ejecta in Type Ia supernovae. In particular, we suggest the abundances generated in quasi-nuclear statistical equilibrium are preserved during the subsequent freeze-out. This allows potential recovery of Y (sub e) at explosion from the abundances recovered from an observed spectra. We show that measurement of (super 28) Si, (super 32) S, (super 40) Ca, and (super 54) Fe abundances can be used to construct Y (sub e) in the silicon-rich regions of the supernovae. If these four abundances are determined exactly, they are sufficient to recover Y (sub e) to 6%. This is because these isotopes dominate the composition of silicon-rich material and iron-rich material in quasi-nuclear statistical equilibrium. Analytical analysis shows the (super 28) Si abundance is insensitive to Y (sub e) , the (super 32) S abundance has a nearly linear trend with Y (sub e) , and the (super 40) Ca abundance has a nearly quadratic trend with Y (sub e) . We verify these trends with post-processing of one-dimensional models and show that these trends are reflected in the model's synthetic spectra. Copyright (Copyright) 2014. The American Astronomical Society. All rights reserved. JF - The Astrophysical Journal AU - De, Soma AU - Timmes, F X AU - Brown, Edward F AU - Calder, Alan C AU - Townsley, Dean M AU - Athanassiadou, Themis AU - Chamulak, David A AU - Hawley, Wendy AU - Jack, Dennis Y1 - 2014/06/01/ PY - 2014 DA - 2014 Jun 01 EP - Paper no. 149 PB - IOP Publishing for American Astronomical Society, Bristol VL - 787 IS - 2 SN - 0004-637X, 0004-637X KW - calcium KW - Ca-40 KW - isotopes KW - one-dimensional models KW - simulation KW - silicon KW - stable isotopes KW - iron KW - brightness KW - Si-28 KW - major elements KW - white dwarfs KW - electrons KW - alkaline earth metals KW - explosions KW - supernovas KW - S-32 KW - cosmochemistry KW - nucleosynthesis KW - ejecta KW - models KW - stars KW - metals KW - Type IA supernovas KW - sulfur KW - Fe-54 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1784735682?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=On+silicon+group+elements+ejected+by+supernovae+Type+IA&rft.au=De%2C+Soma%3BTimmes%2C+F+X%3BBrown%2C+Edward+F%3BCalder%2C+Alan+C%3BTownsley%2C+Dean+M%3BAthanassiadou%2C+Themis%3BChamulak%2C+David+A%3BHawley%2C+Wendy%3BJack%2C+Dennis&rft.aulast=De&rft.aufirst=Soma&rft.date=2014-06-01&rft.volume=787&rft.issue=2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Astrophysical+Journal&rft.issn=0004637X&rft_id=info:doi/10.1088%2F0004-637X%2F787%2F2%2F149 L2 - http://iopscience.iop.org/0004-637X LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by IOP Publishing Ltd., London, United Kingdom N1 - Date revised - 2016-01-01 N1 - Number of references - 101 N1 - Document feature - illus. N1 - Last updated - 2016-04-28 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; brightness; Ca-40; calcium; cosmochemistry; ejecta; electrons; explosions; Fe-54; iron; isotopes; major elements; metals; models; nucleosynthesis; one-dimensional models; S-32; Si-28; silicon; simulation; stable isotopes; stars; sulfur; supernovas; Type IA supernovas; white dwarfs DO - http://dx.doi.org/10.1088/0004-637X/787/2/149 ER - TY - JOUR T1 - Active-layer thickness across Alaska; comparing observation-based estimates with CMIP5 earth system model predictions AN - 1618135132; 2014-085180 AB - Predicted active-layer (AL) thicknesses of permafrost-affected soils influence earth system model predictions of C-climate feedbacks; yet, only a few observation-based studies have estimated AL thicknesses across large regions and at the spatial scale at which they vary. We used spatially referenced soil profile description data (n = 153) and environmental variables (topography, climate, and land cover) in a geographically weighted regression approach to predict the spatial variability of AL thickness across Alaska at a 60-m spatial resolution. The predicted AL thickness across Alaska ranged from 0.14 to 0.93 m, with a spatial average of 0.46 m and a coefficient of variation of 30%. The average prediction error and ratio of performance to deviation were 0.11 m and 1.8, respectively. Our study showed mean annual surface air temperature, land cover type, and slope gradient were primary controllers of AL thickness spatial variability. We compared our estimates with Coupled Model Intercomparison Project Phase 5 (CMIP5) earth system model predictions; those predictions showed large interquartile ranges in predicted AL thicknesses (0.35-4.4 m) indicating substantial overestimate of current AL thickness in Alaska, which might result in higher positive permafrost C feedback under future warming scenarios. The CMIP5 predictions of AL thicknesses spatial heterogeneity were unrealistic when compared with observations, and prediction errors were several times larger in comparison to errors from our observation-based approach. The coefficient of variability of AL thickness was substantially lower in CMIP5 predictions compared to our estimates when gridded at similar spatial resolutions. These results indicate the need for better process representations and representation of natural spatial heterogeneity due to local environment (topography, vegetation, and soil properties) in earth system models to generate a realistic variation of regional scale AL thickness, which could reduce the existing uncertainty in predicting permafrost C-climate feedbacks. JF - Soil Science Society of America Journal AU - Mishra, Umakant AU - Riley, William J Y1 - 2014/06// PY - 2014 DA - June 2014 SP - 894 EP - 902 PB - Soil Science Society of America, Madison, WI VL - 78 IS - 3 SN - 0361-5995, 0361-5995 KW - United States KW - soils KW - CMIP5 KW - soil profiles KW - permafrost KW - monitoring KW - northern Alaska KW - climate change KW - observations KW - models KW - feedback KW - spatial distribution KW - thickness KW - Alaska KW - active layer KW - climate KW - remote sensing KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618135132?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Soil+Science+Society+of+America+Journal&rft.atitle=Active-layer+thickness+across+Alaska%3B+comparing+observation-based+estimates+with+CMIP5+earth+system+model+predictions&rft.au=Mishra%2C+Umakant%3BRiley%2C+William+J&rft.aulast=Mishra&rft.aufirst=Umakant&rft.date=2014-06-01&rft.volume=78&rft.issue=3&rft.spage=894&rft.isbn=&rft.btitle=&rft.title=Soil+Science+Society+of+America+Journal&rft.issn=03615995&rft_id=info:doi/10.2136%2Fsssaj2013.11.0484 L2 - https://www.soils.org/publications/sssaj LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 55 N1 - PubXState - WI N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2014-10-30 N1 - CODEN - SSSJD4 N1 - SubjectsTermNotLitGenreText - active layer; Alaska; climate; climate change; CMIP5; feedback; models; monitoring; northern Alaska; observations; permafrost; remote sensing; soil profiles; soils; spatial distribution; thickness; United States DO - http://dx.doi.org/10.2136/sssaj2013.11.0484 ER - TY - JOUR T1 - Biological evaluation of bismuth non-steroidal anti-inflammatory drugs (BiNSAIDs): stability, toxicity and uptake in HCT-8 colon cancer cells. AN - 1517882466; 24650572 AB - Recent studies showed that the metal-coordinated non-steroidal anti-inflammatory drug (NSAID), copper indomethacin, reduced aberrant crypt formation in the rodent colon cancer model, while also exhibiting gastrointestinal sparing properties. In the present study, the stability and biological activity of three BiNSAIDs of the general formula [Bi(L)3]n, where L=diflunisal (difl), mefenamate (mef) or tolfenamate (tolf) were examined. NMR spectroscopy of high concentrations of BiNSAIDs (24h in cell medium, 37°C) indicated that their structural stability and interactions with cell medium components were NSAID specific. Assessment of cell viability using the [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium]bromide (MTT) assay showed that the toxicity ranking of the BiNSAIDs paralleled those of the respective free NSAIDs: diflH35 000] unconfined aquifers underlying the watershed are absent in the southern regions, where infiltrating fresh water mixes with the less saline groundwater (TDS: <10 000). Twenty potential locations (size: 1 to 75 km (super 2) ) for freshwater lens development were identified in northern Kuwait, and continuous rainfall-runoff models (Soil Water and Assessment Tool) were applied to provide a first-order estimation of the average annual recharge in the watershed (127 X 10 (super 6) m (super 3) ) and freshwater lenses (8.17 X 10 (super 6) m (super 3) ). Results demonstrate the settings for enhanced opportunities for groundwater recharge, outline the amounts of and preservation conditions for the groundwater feeding the freshwater lenses, and highlight potential applications and locations of freshwater lenses in similar settings elsewhere in the Arabian Peninsula and beyond. Abstract Copyright (2010), John Wiley & Sons, Ltd. JF - Hydrological Processes AU - Milewski, Adam AU - Sultan, Mohamed AU - Al-Dousari, Ahmad AU - Yan, Eugene Y1 - 2014/03/30/ PY - 2014 DA - 2014 Mar 30 SP - 3185 EP - 3194 PB - Wiley-Blackwell, New York, NY VL - 28 IS - 7 SN - 0885-6087, 0885-6087 KW - terrestrial environment KW - ArcGIS KW - SWAT model KW - watersheds KW - fresh water KW - atmospheric precipitation KW - ground water KW - sedimentary rocks KW - geographic information systems KW - drainage basins KW - Kuwait KW - Asia KW - hydrology KW - lenses KW - soil and water assessment tool KW - rainfall KW - arid environment KW - ArcInfo KW - northern Kuwait KW - aquifers KW - models KW - Arabian Peninsula KW - recharge KW - runoff KW - information systems KW - Raudhatain Kuwait KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1529793442?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Geologic+and+hydrologic+settings+for+development+of+freshwater+lenses+in+arid+lands&rft.au=Milewski%2C+Adam%3BSultan%2C+Mohamed%3BAl-Dousari%2C+Ahmad%3BYan%2C+Eugene&rft.aulast=Milewski&rft.aufirst=Adam&rft.date=2014-03-30&rft.volume=28&rft.issue=7&rft.spage=3185&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2Fhyp.9823 L2 - http://www3.interscience.wiley.com/cgi-bin/jhome/4125 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 50 N1 - PubXState - NY N1 - Document feature - illus. incl. sect., 1 table, geol. sketch map N1 - Last updated - 2014-08-14 N1 - SubjectsTermNotLitGenreText - aquifers; Arabian Peninsula; ArcGIS; ArcInfo; arid environment; Asia; atmospheric precipitation; drainage basins; fresh water; geographic information systems; ground water; hydrology; information systems; Kuwait; lenses; models; northern Kuwait; rainfall; Raudhatain Kuwait; recharge; runoff; sedimentary rocks; soil and water assessment tool; SWAT model; terrestrial environment; watersheds DO - http://dx.doi.org/10.1002/hyp.9823 ER - TY - JOUR T1 - Effects of dissimilatory sulfate reduction on Fe (super III) (hydr)oxide reduction and microbial community development AN - 1560082013; 2014-065826 AB - Although dissimilatory iron and sulfate reduction (DIR and DSR) profoundly affect the biogeochemical cycling of C, Fe, and S in subsurface systems, the dynamics of DIR and DSR in the presence of both Fe (super III) (hydr)oxides and sulfate have not been well-studied with mixed microbial populations. This study examined the response of native microbial communities in subsurface sediment from the U.S. Department of Energy's Integrated Field Research Challenge site in Rifle, CO to the availability of sulfate and specific Fe (super III) (hydr)oxide minerals in experimental systems containing lactate as the electron donor, with ferrihydrite, goethite, or lepidocrocite and high (10.2 mM) or low (0.2 mM) sulfate as electron acceptors. We observed rapid fermentation of lactate to acetate and propionate. Fe (super III) reduction was slow and limited in the presence of low-sulfate, but the extent of Fe (super III) reduction increased more than 10 times with high-sulfate amendments. Furthermore, the extent of Fe (super III) reduction was higher in ferrihydrite or lepidocrocite incubations than in goethite incubations. Propionate produced during fermentation of lactate was used as the electron donor for DSR. The concurrence of sulfate reduction and Fe (super II) production suggests that Fe (super II) production was driven primarily by reduction of Fe (super III) by biogenic sulfide. X-ray absorption fine-structure analysis confirmed the formation of ferrous sulfide and the presence of O-coordinated ferrous species. 16S rRNA-based microbial community analysis revealed the development of distinct communities with different Fe (super III) (hydr)oxides. These results highlight the highly coupled nature of C, Fe, and S biogeochemical cycles during DIR and DSR and provide new insight into the effects of electron donor utilization, sulfate concentration, and the presence of specific Fe (super III) (hydr)oxide phases on microbial community development. Abstract Copyright (2014) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Kwon, Man Jae AU - Boyanov, Maxim I AU - Antonopoulos, Dionysios A AU - Brulc, Jennifer M AU - Johnston, Eric R AU - Skinner, Kelly A AU - Kemner, Kenneth M AU - O'Loughlin, Edward J Y1 - 2014/03/15/ PY - 2014 DA - 2014 Mar 15 SP - 177 EP - 190 PB - Elsevier, New York, NY VL - 129 SN - 0016-7037, 0016-7037 KW - United States KW - Garfield County Colorado KW - ecosystems KW - remediation KW - laboratory studies KW - Rifle Colorado KW - sediments KW - oxides KW - reduction KW - chemical composition KW - lactates KW - experimental studies KW - sulfates KW - pollutants KW - Columbia River KW - biochemistry KW - pollution KW - bioremediation KW - iron hydroxides KW - hydroxides KW - biogenic processes KW - metals KW - EXAFS data KW - crystal chemistry KW - Colorado KW - northwestern Colorado KW - microorganisms KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560082013?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Effects+of+dissimilatory+sulfate+reduction+on+Fe+%28super+III%29+%28hydr%29oxide+reduction+and+microbial+community+development&rft.au=Kwon%2C+Man+Jae%3BBoyanov%2C+Maxim+I%3BAntonopoulos%2C+Dionysios+A%3BBrulc%2C+Jennifer+M%3BJohnston%2C+Eric+R%3BSkinner%2C+Kelly+A%3BKemner%2C+Kenneth+M%3BO%27Loughlin%2C+Edward+J&rft.aulast=Kwon&rft.aufirst=Man&rft.date=2014-03-15&rft.volume=129&rft.issue=&rft.spage=177&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.09.037 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 72 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-09-05 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - biochemistry; biogenic processes; bioremediation; chemical composition; Colorado; Columbia River; crystal chemistry; ecosystems; EXAFS data; experimental studies; Garfield County Colorado; hydroxides; iron hydroxides; laboratory studies; lactates; metals; microorganisms; northwestern Colorado; oxides; pollutants; pollution; reduction; remediation; Rifle Colorado; sediments; sulfates; United States DO - http://dx.doi.org/10.1016/j.gca.2013.09.037 ER - TY - JOUR T1 - Geophysical constraints on the hydrogeologic and structural settings of the Gulf of Suez rift-related basins; case study from the El Qaa Plain, Sinai, Egypt AN - 1824216453; 2016-084228 AB - Groundwater has been identified as one of the major freshwater sources that can potentially meet the growing demands of Egypt's population. Gravity data (from 381 ground gravity stations) were collected, processed, and analyzed together with the available aeromagnetic (800 line-km) data to investigate the hydrogeologic and structural settings, areal distribution, geometry, and water storage of the aquifers in El Qaa coastal plain in the southwest Sinai Peninsula, and to assess their longevity given projected extraction rates. Findings include (1) complete Bouguer anomaly and total magnetic intensity maps show two connected sub-basins separated by a narrow saddle with an average basin length of 43 km and an average width of 12 km; (2) two-dimensional modeling of both gravity and magnetic data indicates basin fill with a maximum thickness of 3.5 km; (3) using anomalous residual gravity, the volume of water in storage was estimated at 40-56 km (super 3) ; and (4) progressive increases in extraction rates over time will deplete up to 40% of the aquifers' volume in 200-230 years and will cause the water quality to deteriorate due to seawater intrusion in 45 years. Similar geophysical exploration campaigns, if conducted over the entire coastal plains of the Red Sea and the Gulfs of Suez and Aqaba, could assist in the development of sound and sustainable management schemes for the freshwater resources in these areas. The adopted techniques could pave the way toward the establishment of sustainable utilization schemes for a much larger suite of similar aquifers worldwide. Copyright 2013 Springer Science+Business Media Dordrecht JF - Surveys in Geophysics AU - Ahmed, Mohamed AU - Sauck, William AU - Sultan, Mohamed AU - Yan, Eugene AU - Soliman, Farouk AU - Rashed, Mohamed Y1 - 2014/03// PY - 2014 DA - March 2014 SP - 415 EP - 430 PB - Springer, Dordrecht VL - 35 IS - 2 SN - 0169-3298, 0169-3298 KW - mineral deposits, genesis KW - gravity profiles KW - geophysical surveys KW - North Africa KW - Gulf of Suez KW - Red Sea KW - Sinai KW - geophysical methods KW - magnetic methods KW - mapping KW - ground water KW - aquifers KW - hydrogeological controls KW - Egypt KW - gravity methods KW - gravity anomalies KW - Indian Ocean KW - El Qaa Plain KW - surveys KW - Bouguer anomalies KW - Africa KW - geophysical profiles KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1824216453?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Surveys+in+Geophysics&rft.atitle=Geophysical+constraints+on+the+hydrogeologic+and+structural+settings+of+the+Gulf+of+Suez+rift-related+basins%3B+case+study+from+the+El+Qaa+Plain%2C+Sinai%2C+Egypt&rft.au=Ahmed%2C+Mohamed%3BSauck%2C+William%3BSultan%2C+Mohamed%3BYan%2C+Eugene%3BSoliman%2C+Farouk%3BRashed%2C+Mohamed&rft.aulast=Ahmed&rft.aufirst=Mohamed&rft.date=2014-03-01&rft.volume=35&rft.issue=2&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=Surveys+in+Geophysics&rft.issn=01693298&rft_id=info:doi/10.1007%2Fs10712-013-9259-6 L2 - http://www.springerlink.com/(xfpu0bn4myxx3njya4gn4s55)/app/home/journal.asp?referrer=parent&backto=linkingpublicationresults,1:103000,1 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by Springer Verlag, Berlin, Federal Republic of Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 47 N1 - Document feature - illus. incl. geol. sketch map, 1 table, sketch map N1 - Last updated - 2016-09-29 N1 - CODEN - GPSVAK N1 - SubjectsTermNotLitGenreText - Africa; aquifers; Bouguer anomalies; Egypt; El Qaa Plain; geophysical methods; geophysical profiles; geophysical surveys; gravity anomalies; gravity methods; gravity profiles; ground water; Gulf of Suez; hydrogeological controls; Indian Ocean; magnetic methods; mapping; mineral deposits, genesis; North Africa; Red Sea; Sinai; surveys DO - http://dx.doi.org/10.1007/s10712-013-9259-6 ER - TY - JOUR T1 - Characterization of natural titanomagnetites (Fe (sub 3-x) Ti (sub x) O (sub 4) ) for studying heterogeneous electron transfer to Tc(VII) in the Hanford subsurface AN - 1560087221; 2014-065712 AB - Sediments with basaltic provenance, such as those at the Hanford nuclear reservation, Washington, USA, are rich in Fe-bearing minerals of mixed valence. These minerals are redox reactive with aqueous O (sub 2) or Fe(II), and have the potential to react with important environmental contaminants including Tc. Here we isolate, identify and characterize natural Fe(II)/Fe(III)-bearing microparticles from Hanford sediments, develop synthetic analogues and investigate their batch redox reactivity with aqueous Tc(VII). Natural Fe-rich mineral samples were isolated by magnetic separation from sediments collected at several locations on Hanford's central plateau. This magnetic mineral fraction was found to represent up to 1 wt% of the total sediment, and be composed of 90% magnetite with minor ilmenite and hematite, as determined by X-ray diffraction. The magnetite contained variable amounts of transition metals consistent with alio- and isovalent metal substitutions for Fe. X-ray microprobe analysis showed that Ti was the most significant substituent, and that these grains could be described with the titanomagnetite formula Fe (sub 3-x) Ti (sub x) O (sub 4) , which falls between endmember magnetite (x=0) and ulvospinel (x=1). The dominant composition was determined to be x=0.15 by chemical analysis and electron probe microanalysis in the bulk, and by L-edge X-ray absorption spectroscopy and X-ray photoelectron spectroscopy at the surface. Site-level characterization of the titanomagnetites by X-ray magnetic circular dichroism showed that despite native oxidation, octahedral Fe(II) was detectable within 5 nm of the mineral surface. By testing the effect of contact with oxic Hanford and Ringold groundwaters to reduced Ringold groundwater, it was found that the concentration of this near-surface structural Fe(II) was strongly dependent on aqueous redox condition. This highlights the potential for restoring reducing equivalents and thus reduction capacity to oxidized Fe-mineral surfaces through redox cycling in the natural environment. Reaction of these magnetically-separated natural phases from Hanford sediments with a solution containing 10mu M Tc(VII) showed that they were able to reductively immobilize Tc(VII) with concurrent oxidation of Fe(II) to Fe(III) at the mineral surface, as were synthetic x=0.15 microparticle and nanoparticle analogue phases. When differences in the particle surface area to solution volume ratio were taken into consideration, measured Tc(VII) reduction rates for Fe (sub 3-x) Ti (sub x) O (sub 4) (x=0.15) natural material, synthetic bulk powder and nanoparticles scaled systematically, suggesting possible utility for comprehensive batch and flow reactivity studies. Abstract Copyright (2014) Elsevier, B.V. JF - Geochimica et Cosmochimica Acta AU - Pearce, Carolyn I AU - Liu, J AU - Baer, D R AU - Qafoku, O AU - Heald, Steve M AU - Arenholz, E AU - Grosz, A E AU - McKinley, J P AU - Resch, C T AU - Bowden, M E AU - Engelhard, M H AU - Rosso, K M Y1 - 2014/03/01/ PY - 2014 DA - 2014 Mar 01 SP - 114 EP - 127 PB - Elsevier, New York, NY VL - 128 SN - 0016-7037, 0016-7037 KW - United States KW - solute transport KW - volcanic rocks KW - X-ray diffraction data KW - isotopes KW - igneous rocks KW - environmental analysis KW - titanomagnetite KW - ground water KW - electron probe data KW - XANES spectra KW - Cenozoic KW - radioactive isotopes KW - chemical reactions KW - transport KW - basalts KW - sediments KW - oxides KW - spectra KW - X-ray photoelectron spectra KW - chemical composition KW - water pollution KW - electrons KW - Washington KW - pollutants KW - pollution KW - Hanford Site KW - Ringold Formation KW - X-ray spectra KW - Tertiary KW - soil pollution KW - Neogene KW - EXAFS data KW - crystal chemistry KW - SEM data KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560087221?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geochimica+et+Cosmochimica+Acta&rft.atitle=Characterization+of+natural+titanomagnetites+%28Fe+%28sub+3-x%29+Ti+%28sub+x%29+O+%28sub+4%29+%29+for+studying+heterogeneous+electron+transfer+to+Tc%28VII%29+in+the+Hanford+subsurface&rft.au=Pearce%2C+Carolyn+I%3BLiu%2C+J%3BBaer%2C+D+R%3BQafoku%2C+O%3BHeald%2C+Steve+M%3BArenholz%2C+E%3BGrosz%2C+A+E%3BMcKinley%2C+J+P%3BResch%2C+C+T%3BBowden%2C+M+E%3BEngelhard%2C+M+H%3BRosso%2C+K+M&rft.aulast=Pearce&rft.aufirst=Carolyn&rft.date=2014-03-01&rft.volume=128&rft.issue=&rft.spage=114&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/10.1016%2Fj.gca.2013.12.010 L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 30 N1 - PubXState - NY N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-09-05 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - basalts; Cenozoic; chemical composition; chemical reactions; crystal chemistry; electron probe data; electrons; environmental analysis; EXAFS data; ground water; Hanford Site; igneous rocks; isotopes; Neogene; oxides; pollutants; pollution; radioactive isotopes; Ringold Formation; sediments; SEM data; soil pollution; solute transport; spectra; Tertiary; titanomagnetite; transport; United States; volcanic rocks; Washington; water pollution; X-ray diffraction data; X-ray photoelectron spectra; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.gca.2013.12.010 ER - TY - JOUR T1 - Geochemical and mineralogical investigation of uranium in multi-element contaminated, organic-rich subsurface sediment AN - 1560081991; 2014-065784 AB - Subsurface regions of alluvial sediments characterized by an abundance of refractory or lignitic organic carbon compounds and reduced Fe and S bearing minerals, which are referred to as naturally reduced zones (NRZ), are present at the Integrated Field Research Challenge site in Rifle, CO (a former U mill site), and other contaminated subsurface sites. A study was conducted to demonstrate that the NRZ contains a variety of contaminants and unique minerals and potential contaminant hosts, investigate micron-scale spatial association of U with other co-contaminants, and determine solid phase-bounded U valence state and phase identity. The NRZ sediment had significant solid phase concentrations of U and other co-contaminants suggesting competing sorption reactions and complex temporal variations in dissolved contaminant concentrations in response to transient redox conditions, compared to single contaminant systems. The NRZ sediment had a remarkable assortment of potential contaminant hosts, such as Fe oxides, siderite, Fe(II) bearing clays, rare solids such as ZnS framboids and CuSe, and, potentially, chemically complex sulfides. Micron-scale inspections of the solid phase showed that U was spatially associated with other co-contaminants. High concentration, multi-contaminant, micron size (ca. 5-30mu m) areas of mainly U(IV) (53-100%) which occurred as biogenic UO (sub 2) (82%), or biomass - bound monomeric U(IV) (18%), were discovered within the sediment matrix confirming that biotically induced reduction and subsequent sequestration of contaminant U(VI) via natural attenuation occurred in this NRZ. A combination of assorted solid phase species and an abundance of redox-sensitive constituents may slow U(IV) oxidation rates, effectively enhancing the stability of U(IV) sequestered via natural attenuation, impeding rapid U flushing, and turning NRZs into sinks and long-term, slow-release sources of U contamination to groundwater. Abstract Copyright (2014) Elsevier, B.V. JF - Applied Geochemistry AU - Qafoku, Nikolla P AU - Gartman, Brandy N AU - Kukkadapu, Ravi K AU - Arey, Bruce W AU - Williams, Kenneth H AU - Mouser, Paula J AU - Heald, Steve M AU - Bargar, John R AU - Janot, Noemie AU - Yabusaki, Steve AU - Long, Philip E Y1 - 2014/03// PY - 2014 DA - March 2014 SP - 77 EP - 85 PB - Elsevier, Oxford-New York-Beijing VL - 42 SN - 0883-2927, 0883-2927 KW - United States KW - Garfield County Colorado KW - isotopes KW - biomass KW - XANES spectra KW - Rifle Colorado KW - naturally reduced zones KW - mineral composition KW - sediments KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - reduction KW - chemical composition KW - Eh KW - Mossbauer spectra KW - pollutants KW - pollution KW - X-ray spectra KW - organic compounds KW - metals KW - energy dispersive spectra KW - EXAFS data KW - uranium KW - Colorado KW - sulfides KW - actinides KW - SEM data KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560081991?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Geochemical+and+mineralogical+investigation+of+uranium+in+multi-element+contaminated%2C+organic-rich+subsurface+sediment&rft.au=Qafoku%2C+Nikolla+P%3BGartman%2C+Brandy+N%3BKukkadapu%2C+Ravi+K%3BArey%2C+Bruce+W%3BWilliams%2C+Kenneth+H%3BMouser%2C+Paula+J%3BHeald%2C+Steve+M%3BBargar%2C+John+R%3BJanot%2C+Noemie%3BYabusaki%2C+Steve%3BLong%2C+Philip+E&rft.aulast=Qafoku&rft.aufirst=Nikolla&rft.date=2014-03-01&rft.volume=42&rft.issue=&rft.spage=77&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2Fj.apgeochem.2013.12.001 L2 - http://www.sciencedirect.com/science/journal/08832927 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands N1 - Date revised - 2014-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-09-05 N1 - SubjectsTermNotLitGenreText - actinides; biomass; chemical composition; Colorado; Eh; energy dispersive spectra; EXAFS data; Garfield County Colorado; isotopes; metals; mineral composition; Mossbauer spectra; naturally reduced zones; organic compounds; oxides; pollutants; pollution; reduction; Rifle Colorado; sediments; SEM data; spectra; sulfides; United States; uranium; X-ray fluorescence spectra; X-ray spectra; XANES spectra DO - http://dx.doi.org/10.1016/j.apgeochem.2013.12.001 ER - TY - JOUR T1 - Effects of co-produced biochar on life cycle greenhouse gas emissions of pyrolysis-derived renewable fuels AN - 1559669762; 19432469 AB - Biochar is a co-product from biomass pyrolysis that can sequester carbon when applied to soils. It may also reduce N sub(2)O and CH sub(4) emissions from soils, increase fertilizer efficiency, increase soil organic carbon, and increase crop yields. Treatment of these additional agricultural effects in life cycle analyses (LCAs) of pyrolysis-based liquid fuels could significantly influence LCA results. In this study, we include these effects in analyses of fast and slow pyrolysis. We also consider scenarios in which biochar is combusted to produce electricity. Probability distribution functions are developed for biochar yield and carbon content whereas average, minimum, and maximum values for biochar's stability factor and agricultural effects are developed from a thorough literature review and used in baseline and sensitivity analyses. Overall, life-cycle greenhouse gas (GHG) emissions for pyrolysis-based gasoline are lower when biochar is applied to soil than when it is combusted. Carbon abatement (CA) values of fast and slow pyrolysis fuel production systems are comparable. CA is reduced for an alternative fast pyrolysis system in which the pyrolysis oil is combusted for heat and electricity generation rather than upgraded to a hydrocarbon fuel. In the baseline case with biochar soil application, inclusion of agricultural effects reduces GHG emissions by 2.1 g CO sub(2)e/MJ from 16 g CO sub(2)e/MJ. Biochar carbon content and yield exert the strongest influence on GHG emissions results. Results are also sensitive to biochar's ability to suppress N sub(2)O emissions and increase soil organic carbon, which are subject to high uncertainty. copyright 2013 Society of Chemical Industry and John Wiley & Sons, Ltd JF - Biofuels, Bioproducts and Biorefining AU - Wang, Zhichao AU - Dunn, Jennifer B AU - Han, Jeongwoo AU - Wang, Michael Q AD - Argonne National Laboratory, Argonne, IL, USA. Y1 - 2014/03// PY - 2014 DA - Mar 2014 SP - 189 EP - 204 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 8 IS - 2 SN - 1932-104X, 1932-104X KW - Biotechnology and Bioengineering Abstracts KW - fast pyrolysis KW - biochar KW - life-cycle analysis KW - greenhouse gas emissions KW - biofuels KW - carbon abatement KW - Hydrocarbons KW - Gasoline KW - Fuels KW - Life cycle KW - Soils (organic) KW - Refining KW - Electricity KW - Biomass KW - Crops KW - Greenhouses KW - Oil KW - Soil KW - Pyrolysis KW - Fertilizers KW - Carbon KW - Literature reviews KW - Heat KW - Biofuels KW - W 30940:Products UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1559669762?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biofuels%2C+Bioproducts+and+Biorefining&rft.atitle=Effects+of+co-produced+biochar+on+life+cycle+greenhouse+gas+emissions+of+pyrolysis-derived+renewable+fuels&rft.au=Wang%2C+Zhichao%3BDunn%2C+Jennifer+B%3BHan%2C+Jeongwoo%3BWang%2C+Michael+Q&rft.aulast=Wang&rft.aufirst=Zhichao&rft.date=2014-03-01&rft.volume=8&rft.issue=2&rft.spage=189&rft.isbn=&rft.btitle=&rft.title=Biofuels%2C+Bioproducts+and+Biorefining&rft.issn=1932104X&rft_id=info:doi/10.1002%2Fbbb.1447 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Gasoline; Hydrocarbons; Fuels; Life cycle; Refining; Soils (organic); Electricity; Biomass; Crops; Greenhouses; Pyrolysis; Soil; Oil; Fertilizers; Carbon; Literature reviews; Heat; Biofuels DO - http://dx.doi.org/10.1002/bbb.1447 ER - TY - JOUR T1 - A Framework for Estimating the Adverse Health Effects of Contamination Events in Water Distribution Systems and its Application AN - 1520373722; 19540787 AB - Intentional or accidental releases of contaminants into a water distribution system (WDS) have the potential to cause significant adverse health effects among individuals consuming water from the system. A flexible analysis framework is presented here for estimating the magnitude of such potential effects and is applied using network models for 12 actual WDSs of varying sizes. Upper bounds are developed for the magnitude of adverse effects of contamination events in WDSs and evaluated using results from the 12 systems. These bounds can be applied in cases in which little system-specific information is available. The combination of a detailed, network-specific approach and a bounding approach allows consequence assessments to be performed for systems for which varying amounts of information are available and addresses important needs of individual utilities as well as regional or national assessments. The approach used in the analysis framework allows contaminant injections at any or all network nodes and uses models that (1) account for contaminant transport in the systems, including contaminant decay, and (2) provide estimates of ingested contaminant doses for the exposed population. The approach can be easily modified as better transport or exposure models become available. The methods presented here provide the ability to quantify or bound potential adverse effects of contamination events for a wide variety of possible contaminants and WDSs, including systems without a network model. JF - Risk Analysis AU - Davis, Michael J AU - Janke, Robert AU - Magnuson, Matthew L AD - Argonne National Laboratory. Environmental Science Division Y1 - 2014/03// PY - 2014 DA - Mar 2014 SP - 498 EP - 513 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 34 IS - 3 SN - 0272-4332, 0272-4332 KW - Pollution Abstracts; Health & Safety Science Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Aqualine Abstracts; Water Resources Abstracts; Risk Abstracts KW - Contamination KW - Pollution dispersion KW - Water supplies KW - Utilities KW - Pollutants KW - Assessments KW - Water Distribution Systems KW - Networks KW - Decay KW - Risk analysis KW - Estimating KW - Ingestion KW - Model Studies KW - Risk KW - Side effects KW - AQ 00001:Water Resources and Supplies KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - H 2000:Transportation KW - SW 3060:Water treatment and distribution KW - R2 23010:General: Models, forecasting UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520373722?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Risk+Analysis&rft.atitle=A+Framework+for+Estimating+the+Adverse+Health+Effects+of+Contamination+Events+in+Water+Distribution+Systems+and+its+Application&rft.au=Davis%2C+Michael+J%3BJanke%2C+Robert%3BMagnuson%2C+Matthew+L&rft.aulast=Davis&rft.aufirst=Michael&rft.date=2014-03-01&rft.volume=34&rft.issue=3&rft.spage=498&rft.isbn=&rft.btitle=&rft.title=Risk+Analysis&rft.issn=02724332&rft_id=info:doi/10.1111%2Frisa.12107 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-04-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Contamination; Pollution dispersion; Risk analysis; Decay; Ingestion; Water supplies; Utilities; Side effects; Risk; Assessments; Pollutants; Estimating; Water Distribution Systems; Networks; Model Studies DO - http://dx.doi.org/10.1111/risa.12107 ER - TY - JOUR T1 - Atom-probe analyses of nanodiamonds from Allende AN - 1520104455; 2014-028659 AB - Atom-probe tomography (APT) is currently the only analytical technique that, due to its spatial resolution and detection efficiency, has the potential to measure the carbon isotope ratios of individual nanodiamonds. We describe three different sample preparation protocols that we developed for the APT analysis of meteoritic nanodiamonds at sub-nm resolution and present carbon isotope peak ratios of meteoritic and synthetic nanodiamonds. The results demonstrate an instrumental bias associated with APT that needs to be quantified and corrected to obtain accurate isotope ratios. After this correction is applied, this technique should allow determination of the distribution of (super 12) C/ (super 13) C ratios in individual diamond grains, solving the decades-old question of the origin of meteoritic nanodiamonds: what fraction, if any, formed in the solar system and in presolar environments? Furthermore, APT could help us identify the stellar sources of any presolar nanodiamonds that are detected. Abstract Copyright The Meteoritical Society, 2014. JF - Meteoritics & Planetary Science AU - Heck, Philipp R AU - Stadermann, Frank J AU - Isheim, Dieter AU - Auciello, Orlando AU - Daulton, Tyrone L AU - Davis, Andrew M AU - Elam, Jeffrey W AU - Floss, Christine AU - Hiller, Jon AU - Larson, David J AU - Lewis, Josiah B AU - Mane, Anil AU - Pellin, Michael J AU - Savina, Michael R AU - Seidman, David N AU - Stephan, Thomas Y1 - 2014/03// PY - 2014 DA - March 2014 SP - 453 EP - 467 PB - Meteoritical Society, Fayetteville, AR VL - 49 IS - 3 SN - 1086-9379, 1086-9379 KW - tomography KW - methods KW - stony meteorites KW - isotopes KW - CV chondrites KW - silicon KW - stable isotopes KW - nitrogen KW - Allende Meteorite KW - meteorites KW - presolar grains KW - carbon KW - diamond KW - chondrites KW - nanodiamond KW - N-15/N-14 KW - atom-probe tomography KW - Si-29/Si-28 KW - isotope ratios KW - C-13/C-12 KW - standardization KW - native elements KW - carbonaceous chondrites KW - sample preparation KW - Si-30/Si-28 KW - nanoparticles KW - 05B:Petrology of meteorites and tektites KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1520104455?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Meteoritics+%26+Planetary+Science&rft.atitle=Atom-probe+analyses+of+nanodiamonds+from+Allende&rft.au=Heck%2C+Philipp+R%3BStadermann%2C+Frank+J%3BIsheim%2C+Dieter%3BAuciello%2C+Orlando%3BDaulton%2C+Tyrone+L%3BDavis%2C+Andrew+M%3BElam%2C+Jeffrey+W%3BFloss%2C+Christine%3BHiller%2C+Jon%3BLarson%2C+David+J%3BLewis%2C+Josiah+B%3BMane%2C+Anil%3BPellin%2C+Michael+J%3BSavina%2C+Michael+R%3BSeidman%2C+David+N%3BStephan%2C+Thomas&rft.aulast=Heck&rft.aufirst=Philipp&rft.date=2014-03-01&rft.volume=49&rft.issue=3&rft.spage=453&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/10.1111%2Fmaps.12265 L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom N1 - Date revised - 2014-01-01 N1 - Number of references - 52 N1 - PubXState - AR N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-05-01 N1 - CODEN - MERTAW N1 - SubjectsTermNotLitGenreText - Allende Meteorite; atom-probe tomography; C-13/C-12; carbon; carbonaceous chondrites; chondrites; CV chondrites; diamond; isotope ratios; isotopes; meteorites; methods; N-15/N-14; nanodiamond; nanoparticles; native elements; nitrogen; presolar grains; sample preparation; Si-29/Si-28; Si-30/Si-28; silicon; stable isotopes; standardization; stony meteorites; tomography DO - http://dx.doi.org/10.1111/maps.12265 ER - TY - CPAPER T1 - Crystallography in Materials Science: Where the Atoms Are and How to Put Them There T2 - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AN - 1510100164; 6280119 JF - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AU - Mitchell, John Y1 - 2014/02/13/ PY - 2014 DA - 2014 Feb 13 KW - Materials technology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510100164?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.atitle=Crystallography+in+Materials+Science%3A+Where+the+Atoms+Are+and+How+to+Put+Them+There&rft.au=Mitchell%2C+John&rft.aulast=Mitchell&rft.aufirst=John&rft.date=2014-02-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2014/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - CPAPER T1 - Picasso at the Nanoscale: Investigating the Chemistry of Iconic Paints T2 - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AN - 1510100115; 6279852 JF - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AU - Rose, Volker Y1 - 2014/02/13/ PY - 2014 DA - 2014 Feb 13 KW - Paints UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510100115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.atitle=Picasso+at+the+Nanoscale%3A+Investigating+the+Chemistry+of+Iconic+Paints&rft.au=Rose%2C+Volker&rft.aulast=Rose&rft.aufirst=Volker&rft.date=2014-02-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2014/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - CPAPER T1 - Accelerating Bacterial Genomics and Metagenomics via Science Services T2 - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AN - 1510100070; 6279771 JF - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AU - Stevens, Rick Y1 - 2014/02/13/ PY - 2014 DA - 2014 Feb 13 KW - genomics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510100070?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.atitle=Accelerating+Bacterial+Genomics+and+Metagenomics+via+Science+Services&rft.au=Stevens%2C+Rick&rft.aulast=Stevens&rft.aufirst=Rick&rft.date=2014-02-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2014/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - CPAPER T1 - Synchrotron X-Ray Scanning Tunneling Microscopy T2 - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AN - 1510099887; 6280156 JF - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AU - Rose, Volker Y1 - 2014/02/13/ PY - 2014 DA - 2014 Feb 13 KW - Tunnels UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510099887?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.atitle=Synchrotron+X-Ray+Scanning+Tunneling+Microscopy&rft.au=Rose%2C+Volker&rft.aulast=Rose&rft.aufirst=Volker&rft.date=2014-02-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2014/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - CPAPER T1 - User Facilities: Unique Resources for Interdisciplinary Discovery and Innovation T2 - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AN - 1510095369; 6280002 JF - 2014 Annual Meeting of the American Association for the Advancement of Science (AAAS 2014) AU - Isaacs, Eric Y1 - 2014/02/13/ PY - 2014 DA - 2014 Feb 13 KW - Innovations UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1510095369?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.atitle=User+Facilities%3A+Unique+Resources+for+Interdisciplinary+Discovery+and+Innovation&rft.au=Isaacs%2C+Eric&rft.aulast=Isaacs&rft.aufirst=Eric&rft.date=2014-02-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2014+Annual+Meeting+of+the+American+Association+for+the+Advancement+of+Science+%28AAAS+2014%29&rft.issn=&rft_id=info:doi/ L2 - https://aaas.confex.com/aaas/2014/webprogram/start.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-03-24 N1 - Last updated - 2014-03-26 ER - TY - JOUR T1 - Visualization of the magnetic structure of sculpted three-dimensional cobalt nanospirals. AN - 1499152466; 24444002 AB - In this work, we report on the direct visualization of magnetic structure in sculpted three-dimensional cobalt (Co) nanospirals with a wire diameter of 20 nm and outer spiral diameter of 115 nm and on the magnetic interactions between the nanospirals, using aberration-corrected Lorentz transmission electron microscopy. By analyzing the magnetic domains in three dimensions at the nanoscale, we show that magnetic domain formation in the Co nanospirals is a result of the shape anisotropy dominating over the magnetocrystalline anisotropy of the system. We also show that the strong dipolar magnetic interactions between adjacent closely packed nanospirals leads to their magnetization directions adopting alternating directions to minimize the total magnetostatic energy of the system. Deviations from such magnetization structure can only be explained by analyzing the complex three-dimensional structure of the nanospirals. These nanostructures possess an inherent chirality due to their growth conditions and are of significant importance as nanoscale building blocks in magneto-optical devices. JF - Nano letters AU - Phatak, Charudatta AU - Liu, Yuzi AU - Gulsoy, Emine Begum AU - Schmidt, Daniel AU - Franke-Schubert, Eva AU - Petford-Long, Amanda AD - Nanoscience and Technology Division, Argonne National Laboratory , Lemont, Illinois 60439, United States. Y1 - 2014/02/12/ PY - 2014 DA - 2014 Feb 12 SP - 759 EP - 764 VL - 14 IS - 2 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1499152466?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nano+letters&rft.atitle=Visualization+of+the+magnetic+structure+of+sculpted+three-dimensional+cobalt+nanospirals.&rft.au=Phatak%2C+Charudatta%3BLiu%2C+Yuzi%3BGulsoy%2C+Emine+Begum%3BSchmidt%2C+Daniel%3BFranke-Schubert%2C+Eva%3BPetford-Long%2C+Amanda&rft.aulast=Phatak&rft.aufirst=Charudatta&rft.date=2014-02-12&rft.volume=14&rft.issue=2&rft.spage=759&rft.isbn=&rft.btitle=&rft.title=Nano+letters&rft.issn=1530-6992&rft_id=info:doi/10.1021%2Fnl404071u LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-03-30 N1 - Date created - 2014-02-12 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/nl404071u ER - TY - JOUR T1 - Thermal conductivities of actinides (U, Pu, Np, Cm, Am) and uranium-alloys (U-Zr, U-Pu-Zr and U-Pu-TRU-Zr) AN - 1794495751; PQ0003147142 AB - The thermal conductivity correlations of actinides (U, Pu, Np, Cm, Am) and alloys of U-Zr, U-Pu-Zr and U-Pu-TRU-Zr were developed for the use in TRU burning reactors as a function of temperature and alloy composition, using the available data in the literature and extrapolating information obtained in the literature. Because of the scarcity in the measured data for thermal conductivities of TRU elements in the literature, estimations for the thermal conductivities of Pu, Am, Np, and Cm were made. A correlation for U-Zr alloy was also developed and extended to U-Pu-Zr and U-Pu-TRU-Zr alloys. JF - Journal of Nuclear Materials AU - Yeon, Kim Soo AU - Cho, Won Tae AU - Dong-Seong, Sohn AD - Argonne National Laboratory, 9700 S, Cass Ave. Argonne, IL 60439, USA, yskim@anl.gov Y1 - 2014/02// PY - 2014 DA - February 2014 SP - 272 EP - 280 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 445 IS - 1-3 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Nuclear reactors KW - Thermal conductivity KW - Radioactive materials KW - Temperature KW - Alloys KW - Scarcity KW - Burning KW - Actinides KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1794495751?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=Thermal+conductivities+of+actinides+%28U%2C+Pu%2C+Np%2C+Cm%2C+Am%29+and+uranium-alloys+%28U-Zr%2C+U-Pu-Zr+and+U-Pu-TRU-Zr%29&rft.au=Yeon%2C+Kim+Soo%3BCho%2C+Won+Tae%3BDong-Seong%2C+Sohn&rft.aulast=Yeon&rft.aufirst=Kim&rft.date=2014-02-01&rft.volume=445&rft.issue=1-3&rft.spage=272&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2013.11.018 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-06-01 N1 - Number of references - 46 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Nuclear reactors; Thermal conductivity; Radioactive materials; Temperature; Scarcity; Alloys; Burning; Actinides DO - http://dx.doi.org/10.1016/j.jnucmat.2013.11.018 ER - TY - JOUR T1 - Spin and valence states of iron in Al-bearing silicate glass at high pressures studied by synchrotron Mossbauer and X-ray emission spectroscopy AN - 1637543343; 2014-101579 AB - High-pressure synchrotron Mossbauer (SMS) and X-ray emission (XES) spectroscopic measurements were conducted to investigate the spin and valence states of iron in (Al,Fe)-bearing magnesium silicate glass (Mg (sub 0.79) Fe (sub 0.10) Al (sub 0.10) Si (sub 0.96) O (sub 3) ) up to 126 GPa and 300 K. By analyzing the Fe Kbeta emission spectra using the integrated relative difference (IRD) method, which accounts for the spectral broadening effects, the derived total spin momentum (S) of the iron in the glass shows no observable changes with pressure within the experimental uncertainties. A two-doublet fitting model representing two diverse local iron atomic environments was used to satisfactorily simulate the high-pressure SMS spectra of iron in the glass. The doublet with an averaged quadrupole splitting (QS) value of 1.94(+ or -0.25) mm/s and chemical shift (CS) of 1.02(+ or -0.25) mm/s at ambient conditions was assigned to be high-spin Fe (super 2+) , whereas the second doublet with QS = 0.83(+ or -0.25) mm/s and CS = 0.49(+ or -0.25) mm/s was assigned to be high-spin Fe (super 3+) . Increasing pressure continuously elevates the QS of Fe (super 2+) from approximately 2 mm/s at ambient pressure to 3.5 mm/s at 126 GPa, while Fe (super 3+) only exhibits a slight increase in the QS to 1.34(+ or -0.25) mm/s. Comparing with previous experimental and theoretical studies on the local geometries and hyperfine parameters of silicate glasses and minerals, we conclude that the occurrence of the extremely high QS of Fe (super 2+) in our glass above approximately 40-50 GPa can be associated with the enhanced density and diverse distortions and geometries of the local Fe (super 2+) environments. Our combined XES and SMS results show that both Fe (super 2+) and Fe (super 3+) ions in Al-bearing silicate remain in the high-spin state, rather than undergoing a spin-pairing transition as proposed previously. Assuming that the silicate glass results can be used as an analog for understanding silicate melts, our results here indicate that iron ions likely experience significant changes in the local environments yet remain overall in the high-spin state in silicate melts at the extreme pressure and temperature conditions of the deep mantle. JF - American Mineralogist AU - Mao, Zhu AU - Lin, Jung-Fu AU - Yang, Jing AU - Wu, Junjie AU - Watson, Heather C AU - Xiao, Yuming AU - Chow, Paul AU - Zhao, Jiyong Y1 - 2014/02// PY - 2014 DA - February 2014 SP - 415 EP - 423 PB - Mineralogical Society of America, Washington, DC VL - 99 IS - 2-3 SN - 0003-004X, 0003-004X KW - experimental studies KW - pressure KW - silicate melts KW - mantle KW - high pressure KW - X-ray spectra KW - melts KW - iron KW - ultrahigh pressure KW - synchrotron radiation KW - lower mantle KW - ferric iron KW - metals KW - aluminum KW - valency KW - spectra KW - glass materials KW - Mossbauer spectra KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1637543343?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=Spin+and+valence+states+of+iron+in+Al-bearing+silicate+glass+at+high+pressures+studied+by+synchrotron+Mossbauer+and+X-ray+emission+spectroscopy&rft.au=Mao%2C+Zhu%3BLin%2C+Jung-Fu%3BYang%2C+Jing%3BWu%2C+Junjie%3BWatson%2C+Heather+C%3BXiao%2C+Yuming%3BChow%2C+Paul%3BZhao%2C+Jiyong&rft.aulast=Mao&rft.aufirst=Zhu&rft.date=2014-02-01&rft.volume=99&rft.issue=2-3&rft.spage=415&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam.2014.4490 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2014-01-01 N1 - Number of references - 88 N1 - PubXState - DC N1 - Document feature - illus. N1 - Last updated - 2014-12-18 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - aluminum; experimental studies; ferric iron; glass materials; high pressure; iron; lower mantle; mantle; melts; metals; Mossbauer spectra; pressure; silicate melts; spectra; synchrotron radiation; ultrahigh pressure; valency; X-ray spectra DO - http://dx.doi.org/10.2138/am.2014.4490 ER - TY - JOUR T1 - Effect of coal ash on the performance of alloys in simulated oxy-fuel environments AN - 1678012034; 19978836 AB - Oxy-fuel combustion can increase efficiency and reduce pollution from coal power plants. To study material performance in an oxy-fuel environment, both Fe- and Ni-based alloys were exposed to simulated oxy-fuel environments at 750 degree C for long terms up to 6300 h. The effects of ash and gas compositions (SO sub(2), CO sub(2), H sub(2)O and O sub(2)) on the performance of alloys were studied. Results from these tests are used to address the role of CO sub(2), steam, and ash in the long-term corrosion performance of alloys. Detailed results are presented on weight change, scale thickness, internal penetration, microstructural characteristics of corrosion products, and cracking of scales for the alloys. Oxide scales were studied by synchrotron nanobeam X-ray diffraction. An incubation period and a propagation period were observed for ash corrosion. Before incubation time, alloys gain weight. After incubation time, localized corrosion damages the protective scales, alloys lose weight and corrosion rates dramatically increase. Since the incubation time can be over 4000 h, long-term test results are more helpful in evaluating the alloy performance in an oxy-fuel combustion environment with ash than the results from a short-term test. The mechanism of ash corrosion is also discussed. JF - Fuel AU - Zeng, Z AU - Natesan, K AU - Cai, Z AU - Rink, D L AD - Nuclear Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, United States zeng@anl.gov Y1 - 2014/01/30/ PY - 2014 DA - 2014 Jan 30 SP - 133 EP - 145 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 117 SN - 0016-2361, 0016-2361 KW - Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Corrosion Abstracts (CO); ANTE: Abstracts in New Technologies and Engineering (AN); Aerospace & High Technology Database (AH) KW - Oxy-fuel KW - Ash corrosion KW - Alloys KW - Scale (corrosion) KW - Corrosion KW - Simulation KW - Coal KW - Carbon dioxide KW - Ashes KW - Yes:(AN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1678012034?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Fuel&rft.atitle=Effect+of+coal+ash+on+the+performance+of+alloys+in+simulated+oxy-fuel+environments&rft.au=Zeng%2C+Z%3BNatesan%2C+K%3BCai%2C+Z%3BRink%2C+D+L&rft.aulast=Zeng&rft.aufirst=Z&rft.date=2014-01-30&rft.volume=117&rft.issue=&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Fuel&rft.issn=00162361&rft_id=info:doi/10.1016%2Fj.fuel.2013.09.021 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-08-01 N1 - Number of references - 28 N1 - Last updated - 2015-05-04 DO - http://dx.doi.org/10.1016/j.fuel.2013.09.021 ER - TY - JOUR T1 - Perfluoroalkyl-substituted ethylene carbonates: Novel electrolyte additives for high-voltage lithium-ion batteries AN - 1475560149; 18815284 AB - A new family of polyfluoroalkyl-substituted ethylene carbonates is synthesized and tested as additives in lithium-ion cells containing EC:EMC + LiPF sub(6)-based electrolyte. The influence of these compounds is investigated in Li sub(1.2)Ni sub(0.15)Mn sub(0.55)Co sub(0.1)O sub(2)//graphite cells via a combination of galvanostatic cycling and electrochemical impedance spectroscopy (EIS) tests. Among the four additives studied in this work (4-(trifluoromethyl)-1,3-dioxolan-2-one (TFM-EC), 4-(perfluorobutyl)-1,3-dioxolan-2-one (PFB-EC), 4-(per-fluorohexyl)-1,3-dioxolan-2-one (PFH-EC), and 4-(perfluorooctyl)-1,3-dioxolan-2-one (PFO-EC)), small amounts (0.5 wt%) of PFO-EC is found to be most effective in lessening cell performance degradation during extended cycling. Linear sweep voltammetry (LSV), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy are used to further characterize the effects of PFO-EC on the positive and negative electrodes. LSV data from the electrolyte, and XPS analyses of electrodes harvested after cycling, suggest that PFO-EC is oxidized on the cathode forming surface films that slow electrode/cell impedance rise. Differential capacity (dQ/dV) plots from graphite//Li cells suggest that PFO-EC is involved in solid electrolyte interphase (SEI) formation. Raman data from anodes after cycling suggest that structural disordering of graphite is reduced by the addition of PFO-EC, which may explain the improved cell capacity retention. JF - Journal of Power Sources AU - Zhu, Y AU - Casselman, MD AU - Li, Y AU - Wei, A AU - Abraham, D P AD - Chemical Sciences and Engineering Div., Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439, USA, abraham@anl.gov Y1 - 2014/01/15/ PY - 2014 DA - 2014 Jan 15 SP - 184 EP - 191 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 246 SN - 0378-7753, 0378-7753 KW - Environment Abstracts KW - Electrolytes KW - New families KW - Batteries KW - Degradation KW - Electrodes KW - Spectroscopy KW - Voltammetry KW - Electrochemistry KW - Additives KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1475560149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=Perfluoroalkyl-substituted+ethylene+carbonates%3A+Novel+electrolyte+additives+for+high-voltage+lithium-ion+batteries&rft.au=Zhu%2C+Y%3BCasselman%2C+MD%3BLi%2C+Y%3BWei%2C+A%3BAbraham%2C+D+P&rft.aulast=Zhu&rft.aufirst=Y&rft.date=2014-01-15&rft.volume=246&rft.issue=&rft.spage=184&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-02-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Electrolytes; Degradation; Batteries; New families; Electrodes; Electrochemistry; Voltammetry; Spectroscopy; Additives ER - TY - JOUR T1 - Tissintite, (Ca,Na,)AlSi (sub 6) O (sub 6) ; a shock-induced clinopyroxene in the Tissint Meteorite AN - 1869030723; 2017-009525 JF - Annual Meeting of the Meteoritical Society AU - Ma, Chi AU - Tschauner, Oliver AU - Beckett, J R AU - Liu, Y AU - Rossman, G R AU - Zuravlev, K AU - Prakapenka, V AU - Dera, P AU - Taylor, L A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 5166 PB - Meteoritical Society, [varies] VL - 77 SN - 0735-049X, 0735-049X KW - silicates KW - stony meteorites KW - Martian meteorites KW - solid solution KW - metamorphism KW - achondrites KW - SNC Meteorites KW - meteorites KW - Tissint Meteorite KW - pyroxene group KW - clinopyroxene KW - shergottite KW - tissintite KW - shock metamorphism KW - new minerals KW - chain silicates KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1869030723?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=Tissintite%2C+%28Ca%2CNa%2C%29AlSi+%28sub+6%29+O+%28sub+6%29+%3B+a+shock-induced+clinopyroxene+in+the+Tissint+Meteorite&rft.au=Ma%2C+Chi%3BTschauner%2C+Oliver%3BBeckett%2C+J+R%3BLiu%2C+Y%3BRossman%2C+G+R%3BZuravlev%2C+K%3BPrakapenka%2C+V%3BDera%2C+P%3BTaylor%2C+L+A%3BAnonymous&rft.aulast=Ma&rft.aufirst=Chi&rft.date=2014-01-01&rft.volume=77&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2014/pdf/5166.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 77th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 4 N1 - SuppNotes - Accessed on June 27, 2016 N1 - Last updated - 2017-02-17 N1 - SubjectsTermNotLitGenreText - achondrites; chain silicates; clinopyroxene; Martian meteorites; metamorphism; meteorites; new minerals; pyroxene group; shergottite; shock metamorphism; silicates; SNC Meteorites; solid solution; stony meteorites; Tissint Meteorite; tissintite ER - TY - JOUR T1 - The carbon-13 pockets in AGB stars and their fingerprints in mainstream SiC grains AN - 1869030520; 2017-009515 JF - Annual Meeting of the Meteoritical Society AU - Liu, N AU - Davis, A M AU - Gallino, R AU - Savina, M R AU - Bisterzo, S AU - Gyngard, F AU - Dauphas, N AU - Pellin, M J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 5429 PB - Meteoritical Society, [varies] VL - 77 SN - 0735-049X, 0735-049X KW - stony meteorites KW - ion probe data KW - isotopes KW - mass spectra KW - zirconium KW - stable isotopes KW - Murchison Meteorite KW - asymptotic giant branch stars KW - meteorites KW - silicon carbide KW - presolar grains KW - barium KW - carbon KW - spectra KW - chondrites KW - alkaline earth metals KW - AGB stars KW - isotope ratios KW - cosmochemistry KW - carbonaceous chondrites KW - stars KW - metals KW - NanoSIMS KW - C-13 KW - CM chondrites KW - strontium KW - 05B:Petrology of meteorites and tektites KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1869030520?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+of+the+Meteoritical+Society&rft.atitle=The+carbon-13+pockets+in+AGB+stars+and+their+fingerprints+in+mainstream+SiC+grains&rft.au=Liu%2C+N%3BDavis%2C+A+M%3BGallino%2C+R%3BSavina%2C+M+R%3BBisterzo%2C+S%3BGyngard%2C+F%3BDauphas%2C+N%3BPellin%2C+M+J%3BAnonymous&rft.aulast=Liu&rft.aufirst=N&rft.date=2014-01-01&rft.volume=77&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+of+the+Meteoritical+Society&rft.issn=0735049X&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/metsoc2014/pdf/5429.pdf http://meteoriticalsociety.org/?page_id=18 LA - English DB - GeoRef N1 - Conference title - 77th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2017, American Geosciences Institute. N1 - Date revised - 2017-01-01 N1 - Number of references - 8 N1 - SuppNotes - Accessed on June 24, 2016 N1 - Last updated - 2017-02-17 N1 - SubjectsTermNotLitGenreText - AGB stars; alkaline earth metals; asymptotic giant branch stars; barium; C-13; carbon; carbonaceous chondrites; chondrites; CM chondrites; cosmochemistry; ion probe data; isotope ratios; isotopes; mass spectra; metals; meteorites; Murchison Meteorite; NanoSIMS; presolar grains; silicon carbide; spectra; stable isotopes; stars; stony meteorites; strontium; zirconium ER - TY - JOUR T1 - X-ray fluorescence mapping of mercury on suspended mineral particles and diatoms in a contaminated fresh-water system AN - 1849300523; 2016-104799 AB - Mercury (Hg) bioavailability and geochemical cycling is affected by its partitioning between the aqueous and particulate phases. We applied a synchrotron-based X-ray fluorescence (XRF) microprobe to visualize and quantify directly the spatial localization of Hg and its correlations with other elements of interest on suspended particles from a Hg-contaminated freshwater system. Up to 175 mu g g (super -1) Hg is found on suspended particles, but less than 0.01% is in the form of methylmercury. Mercury is heterogeneously distributed among phytoplankton (e.g., diatoms) and mineral particles that are rich in iron oxides and natural organic matter (NOM). The diatom-bound Hg is mostly found on outer surfaces of the cells, suggesting passive sorption of Hg on diatoms. Our results indicate that localized sorption of Hg onto suspended particles, including diatoms and NOM-coated oxide minerals, may play an important role in affecting the partitioning, reactivity, and biogeochemical cycling of Hg in natural aquatic environments. JF - Biogeosciences AU - Gu, B AU - Mishra, B AU - Miller, C AU - Wang, W AU - Lai, B AU - Brooks, S C AU - Kemner, K M AU - Liang, L Y1 - 2014 PY - 2014 DA - 2014 SP - 5259 EP - 5267 PB - Copernicus GmbH on behalf of the European Union, Katlenburg-Lindau VL - 11 IS - 18 SN - 1726-4170, 1726-4170 KW - silicates KW - sorption KW - complexing KW - mass spectra KW - suspended materials KW - bioavailability KW - Oak Ridge Tennessee KW - visualization KW - partitioning KW - FTIR spectra KW - reactivity KW - diatoms KW - critical load KW - Tennessee KW - composition KW - particulate materials KW - mineral surface KW - mercury KW - chemical elements KW - Plantae KW - localization KW - oxyhydroxides KW - electron microscopy data KW - distribution KW - X-ray spectra KW - EDS spectra KW - models KW - hydroxides KW - physical properties KW - organic compounds KW - East Fork Poplar Creek KW - methylmercury KW - petrography KW - SEM data KW - particles KW - United States KW - affinities KW - techniques KW - algae KW - iron KW - infrared spectra KW - sampling KW - chemical properties KW - X-ray fluorescence spectra KW - oxides KW - Anderson County Tennessee KW - spectra KW - water pollution KW - geochemistry KW - concentration KW - pollution KW - fresh-water environment KW - organo-metallics KW - geochemical cycle KW - ICP mass spectra KW - metals KW - synchrotrons KW - sheet silicates KW - aquatic environment KW - minerals KW - image analysis KW - 01A:General mineralogy KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1849300523?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biogeosciences&rft.atitle=X-ray+fluorescence+mapping+of+mercury+on+suspended+mineral+particles+and+diatoms+in+a+contaminated+fresh-water+system&rft.au=Gu%2C+B%3BMishra%2C+B%3BMiller%2C+C%3BWang%2C+W%3BLai%2C+B%3BBrooks%2C+S+C%3BKemner%2C+K+M%3BLiang%2C+L&rft.aulast=Gu&rft.aufirst=B&rft.date=2014-01-01&rft.volume=11&rft.issue=18&rft.spage=5259&rft.isbn=&rft.btitle=&rft.title=Biogeosciences&rft.issn=17264170&rft_id=info:doi/10.5194%2Fbg-11-5259-2014 L2 - http://www.biogeosciences.net LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Date revised - 2016-01-01 N1 - Number of references - 43 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2016-12-16 N1 - SubjectsTermNotLitGenreText - affinities; algae; Anderson County Tennessee; aquatic environment; bioavailability; chemical elements; chemical properties; complexing; composition; concentration; critical load; diatoms; distribution; East Fork Poplar Creek; EDS spectra; electron microscopy data; fresh-water environment; FTIR spectra; geochemical cycle; geochemistry; hydroxides; ICP mass spectra; image analysis; infrared spectra; iron; localization; mass spectra; mercury; metals; methylmercury; mineral surface; minerals; models; Oak Ridge Tennessee; organic compounds; organo-metallics; oxides; oxyhydroxides; particles; particulate materials; partitioning; petrography; physical properties; Plantae; pollution; reactivity; sampling; SEM data; sheet silicates; silicates; sorption; spectra; suspended materials; synchrotrons; techniques; Tennessee; United States; visualization; water pollution; X-ray fluorescence spectra; X-ray spectra DO - http://dx.doi.org/10.5194/bg-11-5259-2014 ER - TY - JOUR T1 - Estimated stocks of circumpolar permafrost carbon with quantified uncertainty ranges and identified data gaps AN - 1832583243; 722284-5 AB - Soils and other unconsolidated deposits in the northern circumpolar permafrost region store large amounts of soil organic carbon (SOC). This SOC is potentially vulnerable to remobilization following soil warming and permafrost thaw, but SOC stock estimates were poorly constrained and quantitative error estimates were lacking. This study presents revised estimates of permafrost SOC stocks, including quantitative uncertainty estimates, in the 0-3 m depth range in soils as well as for sediments deeper than 3 m in deltaic deposits of major rivers and in the Yedoma region of Siberia and Alaska. Revised estimates are based on significantly larger databases compared to previous studies. Despite this there is evidence of significant remaining regional data gaps. Estimates remain particularly poorly constrained for soils in the High Arctic region and physiographic regions with thin sedimentary overburden (mountains, highlands and plateaus) as well as for deposits below 3 m depth in deltas and the Yedoma region. While some components of the revised SOC stocks are similar in magnitude to those previously reported for this region, there are substantial differences in other components, including the fraction of perennially frozen SOC. Upscaled based on regional soil maps, estimated permafrost region SOC stocks are 217 + or - 12 and 472 + or - 27 Pg for the 0-0.3 and 0-1 m soil depths, respectively (+ or -95% confidence intervals). Storage of SOC in 0-3 m of soils is estimated to 1035 + or - 150 Pg. Of this, 34 + or - 16 Pg C is stored in poorly developed soils of the High Arctic. Based on generalized calculations, storage of SOC below 3 m of surface soils in deltaic alluvium of major Arctic rivers is estimated as 91 + or - 52 Pg. In the Yedoma region, estimated SOC stocks below 3 m depth are 181 + or - 54 Pg, of which 74 + or - 20 Pg is stored in intact Yedoma (late Pleistocene ice- and organic-rich silty sediments) with the remainder in refrozen thermokarst deposits. Total estimated SOC storage for the permafrost region is approximately 1300 Pg with an uncertainty range of approximately 1100 to 1500 Pg. Of this, approximately 500 Pg is in non-permafrost soils, seasonally thawed in the active layer or in deeper taliks, while approximately 800 Pg is perennially frozen. This represents a substantial approximately 300 Pg lowering of the estimated perennially frozen SOC stock compared to previous estimates. JF - Biogeosciences AU - Hugelius, G AU - Strauss, J AU - Zubrzycki, S AU - Harden, J W AU - Schuur, E A G AU - Ping, C L AU - Schirrmeister, L AU - Grosse, G AU - Michaelson, G J AU - Koven, C D AU - O'Donnell, J A AU - Elberling, B AU - Mishra, U AU - Camill, P AU - Yu, Z AU - Palmtag, J AU - Kuhry, P Y1 - 2014 PY - 2014 DA - 2014 SP - 6573 EP - 6593 PB - Copernicus GmbH on behalf of the European Union, Katlenburg-Lindau VL - 11 IS - 23 SN - 1726-4170, 1726-4170 KW - methods KW - permafrost KW - Svalbard KW - Yedoma region KW - data processing KW - Europe KW - climate change KW - feedback KW - revision KW - Greenland KW - Siberia KW - errors KW - carbon KW - thickness KW - organic carbon KW - Asia KW - climate KW - physiographic provinces KW - North America KW - soil profiles KW - Mackenzie Delta KW - Olenek River KW - clastic sediments KW - cartography KW - Lena Delta KW - Yenisei River KW - Yakutia Russian Federation KW - Pechora River KW - distribution KW - pedons KW - Northwest Territories KW - depth KW - Scandinavia KW - Canada KW - Colville River KW - mathematical methods KW - Yukon River KW - surveys KW - information systems KW - deltaic environment KW - alluvium KW - histograms KW - upscaling KW - field studies KW - United States KW - soil group KW - thematic mapper KW - spatial data KW - data acquisition KW - Kolyma River KW - Russian Federation KW - Ob River KW - Mackenzie River KW - spatial distribution KW - geographic information systems KW - digital cartography KW - Commonwealth of Independent States KW - sampling KW - quantitative analysis KW - sediments KW - data bases KW - Yana KW - uncertainty KW - soils KW - sedimentary cover KW - overburden KW - carbon sequestration KW - Western Europe KW - Arctic region KW - statistical analysis KW - Pyasina River KW - NCSCDv2 KW - Indigirka River KW - regional KW - classification KW - soil surveys KW - Western Canada KW - Alaska KW - accuracy KW - storage KW - 25:Soils KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832583243?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefinprocess&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biogeosciences&rft.atitle=Estimated+stocks+of+circumpolar+permafrost+carbon+with+quantified+uncertainty+ranges+and+identified+data+gaps&rft.au=Hugelius%2C+G%3BStrauss%2C+J%3BZubrzycki%2C+S%3BHarden%2C+J+W%3BSchuur%2C+E+A+G%3BPing%2C+C+L%3BSchirrmeister%2C+L%3BGrosse%2C+G%3BMichaelson%2C+G+J%3BKoven%2C+C+D%3BO%27Donnell%2C+J+A%3BElberling%2C+B%3BMishra%2C+U%3BCamill%2C+P%3BYu%2C+Z%3BPalmtag%2C+J%3BKuhry%2C+P&rft.aulast=Hugelius&rft.aufirst=G&rft.date=2014-01-01&rft.volume=11&rft.issue=23&rft.spage=6573&rft.isbn=&rft.btitle=&rft.title=Biogeosciences&rft.issn=17264170&rft_id=info:doi/10.5194%2Fbg-11-6573-2014 L2 - http://www.biogeosciences.net LA - English DB - GeoRef N1 - Copyright - GeoRef in Process, Copyright 2017, American Geosciences Institute. After editing and indexing, this record will be added to Georef. Reference includes data from Copernicus Gesellschaft, Katlenburg-Lindau, Germany N1 - Number of references - 73 N1 - Document feature - illus. incl. 6 tables, geol. sketch maps N1 - Last updated - 2017-01-24 N1 - SubjectsTermNotLitGenreText - accuracy; Alaska; alluvium; Arctic region; Asia; Canada; carbon; carbon sequestration; cartography; classification; clastic sediments; climate; climate change; Colville River; Commonwealth of Independent States; data acquisition; data bases; data processing; deltaic environment; depth; digital cartography; distribution; errors; Europe; feedback; field studies; geographic information systems; Greenland; histograms; Indigirka River; information systems; Kolyma River; Lena Delta; Mackenzie Delta; Mackenzie River; mathematical methods; methods; NCSCDv2; North America; Northwest Territories; Ob River; Olenek River; organic carbon; overburden; Pechora River; pedons; permafrost; physiographic provinces; Pyasina River; quantitative analysis; regional; revision; Russian Federation; sampling; Scandinavia; sedimentary cover; sediments; Siberia; soil group; soil profiles; soil surveys; soils; spatial data; spatial distribution; statistical analysis; storage; surveys; Svalbard; thematic mapper; thickness; uncertainty; United States; upscaling; Western Canada; Western Europe; Yakutia Russian Federation; Yana; Yedoma region; Yenisei River; Yukon River DO - http://dx.doi.org/10.5194/bg-11-6573-2014 ER - TY - JOUR T1 - Reduction of Hg (super II) by Mn (super II) AN - 1815667207; 2016-073563 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Mishra, Bhoopesh AU - O'Loughlin, Edward J AU - Boyanov, Maxim I AU - Kemner, Kenneth M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1702 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - processes KW - biochemistry KW - oxidation KW - bioavailability KW - manganese KW - hydrochemistry KW - X-ray spectra KW - iron KW - geochemical cycle KW - ferrous iron KW - XANES spectra KW - ferric iron KW - ligands KW - mercury cycle KW - metals KW - EXAFS data KW - spectra KW - reduction KW - thermodynamic properties KW - geochemistry KW - pH KW - mercury KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815667207?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Reduction+of+Hg+%28super+II%29+by+Mn+%28super+II%29&rft.au=Mishra%2C+Bhoopesh%3BO%27Loughlin%2C+Edward+J%3BBoyanov%2C+Maxim+I%3BKemner%2C+Kenneth+M%3BAnonymous&rft.aulast=Mishra&rft.aufirst=Bhoopesh&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1702&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - bioavailability; biochemistry; EXAFS data; ferric iron; ferrous iron; geochemical cycle; geochemistry; hydrochemistry; iron; ligands; manganese; mercury; mercury cycle; metals; oxidation; pH; processes; reduction; spectra; thermodynamic properties; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Roles of arsenate and phosphate in the nucleation and growth of iron (III) (hydr)oxides AN - 1815667125; 2016-073659 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Neil, Chelsea AU - Lee, Byeongdu AU - Jun, Young-Shin AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1783 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - iron oxides KW - X-ray diffraction data KW - crystal growth KW - solution KW - iron KW - ferric iron KW - reactivity KW - oxides KW - anions KW - acid mine drainage KW - amorphous materials KW - oxidation KW - rates KW - properties KW - geochemical cycle KW - hydroxides KW - phosphate ion KW - X-ray data KW - nucleation KW - arsenate ion KW - precipitation KW - metals KW - pyrite KW - TGA data KW - sulfides KW - nanoparticles KW - aquatic environment KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815667125?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Roles+of+arsenate+and+phosphate+in+the+nucleation+and+growth+of+iron+%28III%29+%28hydr%29oxides&rft.au=Neil%2C+Chelsea%3BLee%2C+Byeongdu%3BJun%2C+Young-Shin%3BAnonymous&rft.aulast=Neil&rft.aufirst=Chelsea&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1783&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - acid mine drainage; amorphous materials; anions; aquatic environment; arsenate ion; crystal growth; ferric iron; geochemical cycle; hydroxides; iron; iron oxides; metals; nanoparticles; nucleation; oxidation; oxides; phosphate ion; precipitation; properties; pyrite; rates; reactivity; solution; sulfides; TGA data; X-ray data; X-ray diffraction data ER - TY - JOUR T1 - Non-resonant inelastic X-ray scattering to analyze carbon chemistry in unaltered samples AN - 1815664973; 2016-073564 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Mishra, Bhoopesh AU - O'Loughlin, Edward J AU - Cooper, William T AU - Jastrow, Julie AU - Gordon, Robert AU - Balasubramanian, Mahalingam AU - Kemner, Kenneth M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1703 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - carbon KW - biochemistry KW - prediction KW - spectra KW - wave dispersion KW - geochemistry KW - NMR spectra KW - climate change KW - measurement KW - geochemical cycle KW - chemical fractionation KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1815664973?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Non-resonant+inelastic+X-ray+scattering+to+analyze+carbon+chemistry+in+unaltered+samples&rft.au=Mishra%2C+Bhoopesh%3BO%27Loughlin%2C+Edward+J%3BCooper%2C+William+T%3BJastrow%2C+Julie%3BGordon%2C+Robert%3BBalasubramanian%2C+Mahalingam%3BKemner%2C+Kenneth+M%3BAnonymous&rft.aulast=Mishra&rft.aufirst=Bhoopesh&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1703&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - biochemistry; carbon; chemical fractionation; climate change; geochemical cycle; geochemistry; measurement; NMR spectra; prediction; spectra; wave dispersion ER - TY - JOUR T1 - Using synchrotron X-ray microtomography to image structure and porosity in sheared Neoarchean granite, Yilgarn Craton, Western Australia AN - 1797532937; 2016-052599 JF - Abstracts - Geological Society of Australia AU - Gessner, Klaus AU - Zibra, Ivan AU - Liu, Jie AU - Paesold, Martin AU - Toy, Virginia AU - Xiao, Xianghui AU - Regenauer-Lieb, Klaus AU - Menegon, Luca AU - Graham, Ian T Y1 - 2014 PY - 2014 DA - 2014 SP - 151 EP - 152 PB - Geological Society of Australia, Sydney, N.S.W. VL - 110 SN - 0729-011X, 0729-011X KW - tomography KW - igneous rocks KW - Western Australia KW - granites KW - Youanmi Terrane KW - plastic deformation KW - Cundimurra shear zone KW - plutonic rocks KW - Australia KW - Archean KW - fabric KW - faults KW - ductile deformation KW - shear zones KW - Precambrian KW - Australasia KW - three-dimensional models KW - grain size KW - structural analysis KW - Murchison Province KW - deformation KW - porosity KW - kinematics KW - X-ray data KW - synchrotrons KW - microtomography KW - Yilgarn Craton KW - Neoarchean KW - 16:Structural geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1797532937?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+-+Geological+Society+of+Australia&rft.atitle=Using+synchrotron+X-ray+microtomography+to+image+structure+and+porosity+in+sheared+Neoarchean+granite%2C+Yilgarn+Craton%2C+Western+Australia&rft.au=Gessner%2C+Klaus%3BZibra%2C+Ivan%3BLiu%2C+Jie%3BPaesold%2C+Martin%3BToy%2C+Virginia%3BXiao%2C+Xianghui%3BRegenauer-Lieb%2C+Klaus%3BMenegon%2C+Luca%3BGraham%2C+Ian+T&rft.aulast=Gessner&rft.aufirst=Klaus&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=151&rft.isbn=&rft.btitle=&rft.title=Abstracts+-+Geological+Society+of+Australia&rft.issn=0729011X&rft_id=info:doi/ L2 - http://www.aesc2014.gsa.org.au/assets/Various-reg-partner-opp-workshop-summ-/AESC-Abstract-Proceedings.pdf LA - English DB - GeoRef N1 - Conference title - AESC 2014; 22nd Australian geological convention N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Produced under license from the Commonwealth of Australia as represented by Geoscience Australia, Canberra, ACT, Australia N1 - Date revised - 2016-01-01 N1 - PubXState - N.S.W. N1 - SuppNotes - Paper 03REE-02 N1 - Last updated - 2016-06-17 N1 - SubjectsTermNotLitGenreText - Archean; Australasia; Australia; Cundimurra shear zone; deformation; ductile deformation; fabric; faults; grain size; granites; igneous rocks; kinematics; microtomography; Murchison Province; Neoarchean; plastic deformation; plutonic rocks; porosity; Precambrian; shear zones; structural analysis; synchrotrons; three-dimensional models; tomography; Western Australia; X-ray data; Yilgarn Craton; Youanmi Terrane ER - TY - JOUR T1 - Real-time observations of calcite reactivity with X-ray reflectivity and microscopy AN - 1765876688; 2016-011328 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Fenter, Paul AU - Laanait, Nouamane AU - Lee, San Soo AU - Zhang, Zhan AU - Callogon, Erika AU - Sturchio, Neil C AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 686 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - reactivity KW - X-ray data KW - mineral-water interface KW - crystal structure KW - carbonates KW - observations KW - measurement KW - calcite KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765876688?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Real-time+observations+of+calcite+reactivity+with+X-ray+reflectivity+and+microscopy&rft.au=Fenter%2C+Paul%3BLaanait%2C+Nouamane%3BLee%2C+San+Soo%3BZhang%2C+Zhan%3BCallogon%2C+Erika%3BSturchio%2C+Neil+C%3BAnonymous&rft.aulast=Fenter&rft.aufirst=Paul&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=686&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - calcite; carbonates; crystal structure; measurement; mineral-water interface; observations; reactivity; X-ray data ER - TY - JOUR T1 - Global impact of direct solar absorption due to brown carbon AN - 1765873968; 2016-011324 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Feng, Yan AU - Ramanathan, V AU - Kotamarthi, V R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 682 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - fires KW - absorption KW - brown carbon KW - biomass KW - carbon KW - global KW - solar radiation KW - aerosols KW - organic carbon KW - observations KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1765873968?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Global+impact+of+direct+solar+absorption+due+to+brown+carbon&rft.au=Feng%2C+Yan%3BRamanathan%2C+V%3BKotamarthi%2C+V+R%3BAnonymous&rft.aulast=Feng&rft.aufirst=Yan&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=682&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2016-02-18 N1 - SubjectsTermNotLitGenreText - absorption; aerosols; biomass; brown carbon; carbon; fires; global; observations; organic carbon; solar radiation ER - TY - JOUR T1 - Depth profiling of Genesis diamond-on-silicon collectors; direct comparison between frontside and backside approaches AN - 1756507202; 2016-004260 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Veryovkin, I V AU - Zinovev, A V AU - Tripa, C E AU - Burnett, D S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2795 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - methods KW - alkaline earth metals KW - magnesium KW - experimental studies KW - Genesis Mission KW - solar wind KW - mass spectroscopy KW - diamond-on-silicon collector KW - Sample 61387 KW - sample preparation KW - metals KW - standard materials KW - chemical composition KW - spectroscopy KW - resonance ionization mass spectroscopy KW - Sample 60622 KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507202?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Depth+profiling+of+Genesis+diamond-on-silicon+collectors%3B+direct+comparison+between+frontside+and+backside+approaches&rft.au=Veryovkin%2C+I+V%3BZinovev%2C+A+V%3BTripa%2C+C+E%3BBurnett%2C+D+S%3BAnonymous&rft.aulast=Veryovkin&rft.aufirst=I&rft.date=2014-01-01&rft.volume=45&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2014/pdf/2795.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; chemical composition; diamond-on-silicon collector; experimental studies; Genesis Mission; magnesium; mass spectroscopy; metals; methods; resonance ionization mass spectroscopy; Sample 60622; Sample 61387; sample preparation; solar wind; spectroscopy; standard materials ER - TY - JOUR T1 - Analysis of Genesis Sample 60234 by laboratory total reflection X-ray fluorescence spectrometry and synchrotron grazing incidence X-ray fluorescence AN - 1756507166; 2016-004265 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Schmeling, M AU - Hwang, E AU - Choi, Y AU - Eng, P J AU - Stubbs, J E AU - Veryovkin, I V AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract no. 2119 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - calcium KW - alkaline earth metals KW - Genesis Mission KW - solar wind KW - iron KW - synchrotron radiation KW - Sample 60234 KW - barium KW - total reflection X-ray fluorescence KW - metals KW - nickel KW - X-ray fluorescence spectra KW - spectra KW - grazing incidence X-ray fluorescence KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1756507166?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Analysis+of+Genesis+Sample+60234+by+laboratory+total+reflection+X-ray+fluorescence+spectrometry+and+synchrotron+grazing+incidence+X-ray+fluorescence&rft.au=Schmeling%2C+M%3BHwang%2C+E%3BChoi%2C+Y%3BEng%2C+P+J%3BStubbs%2C+J+E%3BVeryovkin%2C+I+V%3BAnonymous&rft.aulast=Schmeling&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - www.hou.usra.edu/meetings/lpsc2014/pdf/2119.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 8 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Jul. 31, 2015 N1 - Last updated - 2016-01-14 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; barium; calcium; Genesis Mission; grazing incidence X-ray fluorescence; iron; metals; nickel; Sample 60234; solar wind; spectra; synchrotron radiation; total reflection X-ray fluorescence; X-ray fluorescence spectra ER - TY - JOUR T1 - Melt detection of candidate core materials at high pressures using atomic dynamics measurements and a fast temperature readout system AN - 1752577447; 2016-002758 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Zhang, Dongzhou AU - Jackson, Jennifer M AU - Zhao, Jiyong AU - Sturhahn, Wolfgang AU - Alp, Ercan E AU - Hu, Michael Y AU - Toellner, Thomas S AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 2832 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - pressure KW - in situ KW - data processing KW - properties KW - high pressure KW - melts KW - iron KW - temperature KW - measurement KW - computer programs KW - melting KW - MINUTI KW - dynamics KW - metals KW - spectra KW - accuracy KW - Mossbauer spectra KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577447?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Melt+detection+of+candidate+core+materials+at+high+pressures+using+atomic+dynamics+measurements+and+a+fast+temperature+readout+system&rft.au=Zhang%2C+Dongzhou%3BJackson%2C+Jennifer+M%3BZhao%2C+Jiyong%3BSturhahn%2C+Wolfgang%3BAlp%2C+Ercan+E%3BHu%2C+Michael+Y%3BToellner%2C+Thomas+S%3BAnonymous&rft.aulast=Zhang&rft.aufirst=Dongzhou&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=2832&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Number of references - 2 N1 - Last updated - 2015-12-31 N1 - SubjectsTermNotLitGenreText - accuracy; computer programs; data processing; dynamics; high pressure; in situ; iron; measurement; melting; melts; metals; MINUTI; Mossbauer spectra; pressure; properties; spectra; temperature ER - TY - JOUR T1 - Microbially catalyzed electron transfer to iron oxides; from atomic to micron scale AN - 1752577321; 2016-002653 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Kemner, K M AU - Boyanov, M I AU - O'Loughlin, E J AU - Sholto-Douglas, D AU - Skinner, K AU - Lai, B AU - Latta, Drew AU - Cook, R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1228 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - terrestrial environment KW - iron oxides KW - solution KW - Shewanella KW - iron KW - ferric iron KW - catalysis KW - carbon KW - Shewanella oneidensis KW - lepidocrocite KW - X-ray fluorescence spectra KW - oxides KW - spectra KW - Eh KW - processes KW - pollutants KW - biochemistry KW - pollution KW - inorganic materials KW - geochemical cycle KW - nutrients KW - organic compounds KW - precipitation KW - metals KW - bacteria KW - EXAFS data KW - uranium KW - carbon cycle KW - aquatic environment KW - actinides KW - microorganisms KW - Anaeromyxobacter KW - 02C:Geochemistry of rocks, soils, and sediments KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1752577321?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Microbially+catalyzed+electron+transfer+to+iron+oxides%3B+from+atomic+to+micron+scale&rft.au=Kemner%2C+K+M%3BBoyanov%2C+M+I%3BO%27Loughlin%2C+E+J%3BSholto-Douglas%2C+D%3BSkinner%2C+K%3BLai%2C+B%3BLatta%2C+Drew%3BCook%2C+R%3BAnonymous&rft.aulast=Kemner&rft.aufirst=K&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1228&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - Last updated - 2015-12-31 N1 - SubjectsTermNotLitGenreText - actinides; Anaeromyxobacter; aquatic environment; bacteria; biochemistry; carbon; carbon cycle; catalysis; Eh; EXAFS data; ferric iron; geochemical cycle; inorganic materials; iron; iron oxides; lepidocrocite; metals; microorganisms; nutrients; organic compounds; oxides; pollutants; pollution; precipitation; processes; Shewanella; Shewanella oneidensis; solution; spectra; terrestrial environment; uranium; X-ray fluorescence spectra ER - TY - JOUR T1 - Volatile records in olivine-hosted melt inclusions; what can we actually learn from them? AN - 1718054198; 2015-095408 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Bucholz, Claire E AU - Gaetani, Glenn A AU - Behn, Mark D AU - Shimizu, Nobumichi AU - Newville, Matthew AU - Monteleone, Brian AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 296 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - water KW - silicates KW - processes KW - diffusion KW - oxygen KW - isotopes KW - isotope ratios KW - magmatism KW - olivine group KW - stable isotopes KW - melts KW - iron KW - fugacity KW - carbon dioxide KW - nesosilicates KW - ferric iron KW - volatiles KW - D/H KW - metals KW - magmas KW - hydrogen KW - olivine KW - orthosilicates KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1718054198?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Volatile+records+in+olivine-hosted+melt+inclusions%3B+what+can+we+actually+learn+from+them%3F&rft.au=Bucholz%2C+Claire+E%3BGaetani%2C+Glenn+A%3BBehn%2C+Mark+D%3BShimizu%2C+Nobumichi%3BNewville%2C+Matthew%3BMonteleone%2C+Brian%3BAnonymous&rft.aulast=Bucholz&rft.aufirst=Claire&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=296&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-10-01 N1 - SubjectsTermNotLitGenreText - carbon dioxide; D/H; diffusion; ferric iron; fugacity; hydrogen; iron; isotope ratios; isotopes; magmas; magmatism; melts; metals; nesosilicates; olivine; olivine group; orthosilicates; oxygen; processes; silicates; stable isotopes; volatiles; water ER - TY - JOUR T1 - Ba and Sr in mainstream SiCs; condensation or implantation? AN - 1707524297; 2015-081081 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Liu, N AU - Davis, Andrew M AU - Savina, M R AU - Gallino, R AU - Dauphas, N AU - Pellin, M J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1477 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - processes KW - alkaline earth metals KW - isotopes KW - condensation KW - grain size KW - alkali metals KW - mass spectra KW - stable isotopes KW - models KW - Ba-135 KW - radioactive isotopes KW - cesium KW - barium KW - Ba-130 KW - quantitative analysis KW - metals KW - Ba-132 KW - Cs-135 KW - spectra KW - strontium KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707524297?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Ba+and+Sr+in+mainstream+SiCs%3B+condensation+or+implantation%3F&rft.au=Liu%2C+N%3BDavis%2C+Andrew+M%3BSavina%2C+M+R%3BGallino%2C+R%3BDauphas%2C+N%3BPellin%2C+M+J%3BAnonymous&rft.aulast=Liu&rft.aufirst=N&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1477&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 4 N1 - Last updated - 2015-11-19 N1 - SubjectsTermNotLitGenreText - alkali metals; alkaline earth metals; Ba-130; Ba-132; Ba-135; barium; cesium; condensation; Cs-135; grain size; isotopes; mass spectra; metals; models; processes; quantitative analysis; spectra; strontium; stable isotopes; radioactive isotopes ER - TY - JOUR T1 - Atom-probe tomography of cosmochemical samples AN - 1707524280; 2015-080954 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Heck, Philipp R AU - Isheim, Dieter AU - Auciello, Orlando AU - Davis, Andrew M AU - Elam, Jeffrey W AU - Hiller, Jon AU - Larson, David J AU - Mane, Anil AU - Pellin, Michael J AU - Rout, Surya S AU - Savina, Michael R AU - Seidman, David N AU - Stephan, Thomas AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 949 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - tomography KW - isotopes KW - isotope ratios KW - carbon KW - C-13/C-12 KW - cosmochemistry KW - nanoparticles KW - geochemistry KW - stable isotopes KW - samples KW - 04:Extraterrestrial geology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707524280?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Atom-probe+tomography+of+cosmochemical+samples&rft.au=Heck%2C+Philipp+R%3BIsheim%2C+Dieter%3BAuciello%2C+Orlando%3BDavis%2C+Andrew+M%3BElam%2C+Jeffrey+W%3BHiller%2C+Jon%3BLarson%2C+David+J%3BMane%2C+Anil%3BPellin%2C+Michael+J%3BRout%2C+Surya+S%3BSavina%2C+Michael+R%3BSeidman%2C+David+N%3BStephan%2C+Thomas%3BAnonymous&rft.aulast=Heck&rft.aufirst=Philipp&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=949&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmid 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-08-27 N1 - SubjectsTermNotLitGenreText - C-13/C-12; carbon; cosmochemistry; geochemistry; isotope ratios; isotopes; nanoparticles; samples; stable isotopes; tomography ER - TY - JOUR T1 - Correlated Sr and Ba isotopic composition of mainstream SiCs and the (super 13) C pocket in AGB models AN - 1707524261; 2015-081082 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Liu, N AU - Savina, M R AU - Gallino, R AU - Davis, Andrew M AU - Bisterzo, S AU - Kaeppeler, F AU - Dauphas, N AU - Pellin, M J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1478 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - alkaline earth metals KW - stony meteorites KW - oxygen KW - isotopes KW - isotope ratios KW - mechanism KW - carbonaceous chondrites KW - Sr-88/Sr-86 KW - stable isotopes KW - Murchison Meteorite KW - Sr-87/Sr-86 KW - meteorites KW - barium KW - metals KW - carbon KW - C-13 KW - CM chondrites KW - chondrites KW - Ba-138 KW - strontium KW - O-16 KW - instruments KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707524261?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Correlated+Sr+and+Ba+isotopic+composition+of+mainstream+SiCs+and+the+%28super+13%29+C+pocket+in+AGB+models&rft.au=Liu%2C+N%3BSavina%2C+M+R%3BGallino%2C+R%3BDavis%2C+Andrew+M%3BBisterzo%2C+S%3BKaeppeler%2C+F%3BDauphas%2C+N%3BPellin%2C+M+J%3BAnonymous&rft.aulast=Liu&rft.aufirst=N&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1478&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 2 N1 - Last updated - 2015-08-27 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; Ba-138; barium; C-13; carbon; carbonaceous chondrites; chondrites; CM chondrites; instruments; isotope ratios; isotopes; mechanism; metals; meteorites; Murchison Meteorite; O-16; oxygen; Sr-87/Sr-86; Sr-88/Sr-86; stable isotopes; stony meteorites; strontium ER - TY - JOUR T1 - The effect of composition and pressure on the structure of carbonate-silicate melts using in situ X-ray diffuse scattering AN - 1707521639; 2015-083397 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Hummer, Daniel R AU - Kavner, Abby AU - Manning, Craig E AU - Park, Changyong AU - Kono, Yoshio AU - Kenney-Benson, Curtis AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1075 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - experimental studies KW - pressure KW - igneous rocks KW - polymerization KW - melts KW - geochemical cycle KW - calcite KW - buoyancy KW - physical properties KW - X-ray data KW - viscosity KW - magmas KW - carbon KW - composition KW - chemical properties KW - decompression KW - carbonatites KW - carbon cycle KW - carbonates KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707521639?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=The+effect+of+composition+and+pressure+on+the+structure+of+carbonate-silicate+melts+using+in+situ+X-ray+diffuse+scattering&rft.au=Hummer%2C+Daniel+R%3BKavner%2C+Abby%3BManning%2C+Craig+E%3BPark%2C+Changyong%3BKono%2C+Yoshio%3BKenney-Benson%2C+Curtis%3BAnonymous&rft.aulast=Hummer&rft.aufirst=Daniel&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1075&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - Last updated - 2015-08-27 N1 - SubjectsTermNotLitGenreText - buoyancy; calcite; carbon; carbon cycle; carbonates; carbonatites; chemical properties; composition; decompression; experimental studies; geochemical cycle; igneous rocks; magmas; melts; physical properties; polymerization; pressure; viscosity; X-ray data ER - TY - JOUR T1 - Influence of As(V) on Fe(II)-catalyzed Fe oxide recrystallization AN - 1707521106; 2015-083392 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Huhmann, Brittany AU - Neumann, Anke AU - Boyanov, Maxim AU - Kemner, Ken AU - Scherer, Michelle AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1070 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - iron oxides KW - goethite KW - isotopes KW - Fe-57 KW - arsenic KW - adsorption KW - recrystallization KW - ferrihydrite KW - stable isotopes KW - iron KW - ferrous iron KW - catalysis KW - hematite KW - mixing KW - metals KW - lepidocrocite KW - oxides KW - trace elements KW - magnetite KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1707521106?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Influence+of+As%28V%29+on+Fe%28II%29-catalyzed+Fe+oxide+recrystallization&rft.au=Huhmann%2C+Brittany%3BNeumann%2C+Anke%3BBoyanov%2C+Maxim%3BKemner%2C+Ken%3BScherer%2C+Michelle%3BAnonymous&rft.aulast=Huhmann&rft.aufirst=Brittany&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1070&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 5 N1 - Last updated - 2015-08-27 N1 - SubjectsTermNotLitGenreText - adsorption; arsenic; catalysis; Fe-57; ferrihydrite; ferrous iron; goethite; hematite; iron; iron oxides; isotopes; lepidocrocite; magnetite; metals; mixing; oxides; recrystallization; stable isotopes; trace elements ER - TY - JOUR T1 - Simulated changes in biogenic VOC emissions and ozone formation from habitat expansion of Acer Rubrum (red maple) AN - 1705081435; PQ0001831812 AB - A new vegetation trend is emerging in northeastern forests of the United States, characterized by an expansion of red maple at the expense of oak. This has changed emissions of biogenic volatile organic compounds (BVOCs), primarily isoprene and monoterpenes. Oaks strongly emit isoprene while red maple emits a negligible amount. This species shift may impact nearby urban centers because the interaction of isoprene with anthropogenic nitrogen oxides can lead to tropospheric ozone formation and monoterpenes can lead to the formation of particulate matter. In this study the Global Biosphere Emissions and Interactions System was used to estimate the spatial changes in BVOC emission fluxes resulting from a shift in forest composition between oak and maple. A 70% reduction in isoprene emissions occurred when oak was replaced with maple. Ozone simulations with a chemical box model at two rural and two urban sites showed modest reductions in ozone concentrations of up to 5-6 ppb resulting from a transition from oak to red maple, thus suggesting that the observed change in forest composition may benefit urban air quality. This study illustrates the importance of monitoring and representing changes in forest composition and the impacts to human health indirectly through changes in BVOCs. JF - Environmental Research Letters AU - Drewniak, Beth A AU - Snyder, Peter K AU - Steiner, Allison L AU - Twine, Tracy E AU - Wuebbles, Donald J AD - Environmental Science Division, Argonne National Laboratory, Argonne, IL 60439, USA, pksnyder@umn.edu Y1 - 2014/01// PY - 2014 DA - January 2014 SP - 1 EP - 10 PB - IOP Publishing, The Public Ledger Building, Suite 929 Philadelphia PA 19106 United States VL - 9 IS - 1 SN - 1748-9326, 1748-9326 KW - Pollution Abstracts; Sustainability Science Abstracts; Environment Abstracts KW - biogenic volatile organic compounds KW - isoprene KW - Acer Rubrum KW - oak KW - ozone KW - northeastern US forests KW - Pollution monitoring KW - Anthropogenic factors KW - Vegetation KW - Forests KW - Troposphere KW - Air quality KW - Particulates KW - Acer rubrum KW - Nitrogen oxides KW - USA KW - Monoterpenes KW - Emissions KW - Volatile organic compounds KW - Rural areas KW - Urban areas KW - Ozone KW - P 0000:AIR POLLUTION KW - M3 1010:Issues in Sustainable Development KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705081435?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Research+Letters&rft.atitle=Simulated+changes+in+biogenic+VOC+emissions+and+ozone+formation+from+habitat+expansion+of+Acer+Rubrum+%28red+maple%29&rft.au=Drewniak%2C+Beth+A%3BSnyder%2C+Peter+K%3BSteiner%2C+Allison+L%3BTwine%2C+Tracy+E%3BWuebbles%2C+Donald+J&rft.aulast=Drewniak&rft.aufirst=Beth&rft.date=2014-01-01&rft.volume=9&rft.issue=1&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Environmental+Research+Letters&rft.issn=17489326&rft_id=info:doi/10.1088%2F1748-9326%2F9%2F1%2F014006 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Pollution monitoring; Anthropogenic factors; Troposphere; Forests; Vegetation; Air quality; Particulates; Nitrogen oxides; Emissions; Monoterpenes; Volatile organic compounds; Ozone; Urban areas; Rural areas; Acer rubrum; USA DO - http://dx.doi.org/10.1088/1748-9326/9/1/014006 ER - TY - JOUR T1 - Fumarate photoreduction by zinc sulfide nanoparticles; ultrafast studies of prebiotic photochemistry AN - 1703691217; 2015-078443 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Mangiante, David AU - Gilbert, Benjamin AU - Schaller, Richard D AU - Banfield, Jillian F AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1585 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - metabolism KW - photochemistry KW - sphalerite KW - mass spectra KW - properties KW - tricarboxylic acid KW - organic compounds KW - organic acids KW - chemical reactions KW - fumarate KW - chromatograms KW - zinc sulfides KW - carboxylic acids KW - spectra KW - reduction KW - sulfides KW - nanoparticles KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Fumarate+photoreduction+by+zinc+sulfide+nanoparticles%3B+ultrafast+studies+of+prebiotic+photochemistry&rft.au=Mangiante%2C+David%3BGilbert%2C+Benjamin%3BSchaller%2C+Richard+D%3BBanfield%2C+Jillian+F%3BAnonymous&rft.aulast=Mangiante&rft.aufirst=David&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1585&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt abstracts 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 1 N1 - Last updated - 2015-08-13 N1 - SubjectsTermNotLitGenreText - carboxylic acids; chemical reactions; chromatograms; fumarate; mass spectra; metabolism; nanoparticles; organic acids; organic compounds; photochemistry; properties; reduction; spectra; sphalerite; sulfides; tricarboxylic acid; zinc sulfides ER - TY - JOUR T1 - (super 81) Kr; a new tracer of old groundwater flow AN - 1703691174; 2015-078388 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Lu, Z T AU - Jiang, W AU - Zappala, J C AU - Bailey, K AU - Mueller, P AU - O'Connor, T P AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1530 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - Kr-85 KW - Kr-81 KW - radioactive isotopes KW - laser methods KW - isotopes KW - noble gases KW - movement KW - tracers KW - krypton KW - measurement KW - ground water KW - 21:Hydrogeology KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703691174?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=%28super+81%29+Kr%3B+a+new+tracer+of+old+groundwater+flow&rft.au=Lu%2C+Z+T%3BJiang%2C+W%3BZappala%2C+J+C%3BBailey%2C+K%3BMueller%2C+P%3BO%27Connor%2C+T+P%3BAnonymous&rft.aulast=Lu&rft.aufirst=Z&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1530&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt abstracts 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-08-13 N1 - SubjectsTermNotLitGenreText - ground water; isotopes; Kr-81; Kr-85; krypton; laser methods; measurement; movement; noble gases; radioactive isotopes; tracers ER - TY - JOUR T1 - Dating groundwater in the western Great Artesian Basin, Australia AN - 1703690229; 2015-078382 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Love, Andrew J AU - Purtschert, Roland AU - Shand, Paul AU - Jiang, W AU - Lu, Z T AU - Tosaki, Yuki AU - Fulton, Simon AU - Wohling, Daniel AU - Aeschbach-Hertig, Werner AU - Broder, Lisa AU - Kipfer, Rolf AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1524 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - hydrology KW - chlorine KW - Quaternary KW - Australasia KW - isotopes KW - rainfall KW - Cl-36 KW - halogens KW - He-4 KW - paleoclimatology KW - krypton KW - Great Artesian Basin KW - stable isotopes KW - ground water KW - Cenozoic KW - Kr-81 KW - recharge KW - radioactive isotopes KW - geochronology KW - noble gases KW - residence time KW - helium KW - Australia KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1703690229?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Dating+groundwater+in+the+western+Great+Artesian+Basin%2C+Australia&rft.au=Love%2C+Andrew+J%3BPurtschert%2C+Roland%3BShand%2C+Paul%3BJiang%2C+W%3BLu%2C+Z+T%3BTosaki%2C+Yuki%3BFulton%2C+Simon%3BWohling%2C+Daniel%3BAeschbach-Hertig%2C+Werner%3BBroder%2C+Lisa%3BKipfer%2C+Rolf%3BAnonymous&rft.aulast=Love&rft.aufirst=Andrew&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1524&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt abstracts 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-08-13 N1 - SubjectsTermNotLitGenreText - Australasia; Australia; Cenozoic; chlorine; Cl-36; geochronology; Great Artesian Basin; ground water; halogens; He-4; helium; hydrology; isotopes; Kr-81; krypton; noble gases; paleoclimatology; Quaternary; radioactive isotopes; rainfall; recharge; residence time; stable isotopes ER - TY - JOUR T1 - Nano-scale elemental imaging of microbes and minerals from deep sea methane seeps AN - 1696876759; 2015-068757 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Glass, Jennifer B AU - McGlynn, S E AU - Chadwick, G AU - Dawson, K S AU - Chen, S AU - Vogt, S AU - Lai, B AU - Deng, J AU - Ingall, E D AU - Twining, B S AU - Orphan, V J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 813 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - East Pacific KW - gas seeps KW - Northeast Pacific KW - optimization KW - Hydrate Ridge KW - deep-sea environment KW - thin sections KW - X-ray spectra KW - XANES spectra KW - North Pacific KW - marine environment KW - Pacific Ocean KW - sediments KW - X-ray fluorescence spectra KW - spectra KW - trace elements KW - chemical composition KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1696876759?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Nano-scale+elemental+imaging+of+microbes+and+minerals+from+deep+sea+methane+seeps&rft.au=Glass%2C+Jennifer+B%3BMcGlynn%2C+S+E%3BChadwick%2C+G%3BDawson%2C+K+S%3BChen%2C+S%3BVogt%2C+S%3BLai%2C+B%3BDeng%2C+J%3BIngall%2C+E+D%3BTwining%2C+B+S%3BOrphan%2C+V+J%3BAnonymous&rft.aulast=Glass&rft.aufirst=Jennifer&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=813&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Document feature - illus. N1 - Last updated - 2015-07-17 N1 - SubjectsTermNotLitGenreText - chemical composition; deep-sea environment; East Pacific; gas seeps; Hydrate Ridge; marine environment; North Pacific; Northeast Pacific; optimization; Pacific Ocean; sediments; spectra; thin sections; trace elements; X-ray fluorescence spectra; X-ray spectra; XANES spectra ER - TY - JOUR T1 - The Earth Microbiome project: successes and aspirations AN - 1694979532; 20629210 AB - The Earth Microbiome Project (EMP) was launched in August 2010, with the ambitious aim of constructing a global catalogue of the uncultured microbial diversity of this planet. The primary vision of the Earth Microbiome Project, to process the microbial diversity and functional potential from approximately 200,000 environmental samples, marks it as an undertaking so massive that it was at first considered to be pure folly (as late as 2012, Jonathan Eisen was quoted in Nature as saying Knight and Gilbert literally talk about sampling the entire planet. It is ludicrous and not feasible - yet they are doing it [1]). JF - BMC Biology AU - Gilbert, Jack A AU - Jansson, Janet K AU - Knight, Rob AD - Institute for Genomics and Systems Biology, Argonne National Laboratory, Lemont 60439, IL, USA Y1 - 2014///0, PY - 2014 DA - 0, 2014 SP - 69 PB - BioMed Central Ltd., Middlesex House London W1T 4LB United Kingdom VL - 12 IS - 1 SN - 1741-7007, 1741-7007 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Microbial activity KW - Diversity KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1694979532?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologya&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=BMC+Biology&rft.atitle=The+Earth+Microbiome+project%3A+successes+and+aspirations&rft.au=Gilbert%2C+Jack+A%3BJansson%2C+Janet+K%3BKnight%2C+Rob&rft.aulast=Gilbert&rft.aufirst=Jack&rft.date=2014-01-01&rft.volume=12&rft.issue=1&rft.spage=69&rft.isbn=&rft.btitle=&rft.title=BMC+Biology&rft.issn=17417007&rft_id=info:doi/10.1186%2Fs12915-014-0069-1 L2 - http://www.biomedcentral.com/1741-7007/12/69 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Number of references - 20 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Microbial activity; Diversity DO - http://dx.doi.org/10.1186/s12915-014-0069-1 ER - TY - JOUR T1 - Bacterially-produced uraninite; ultrastructural characterization by high resolution imaging and analyses AN - 1692746226; 2015-063340 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Dohnalkova, Alice C AU - Marshall, M J AU - Kemner, K M AU - Kennedy, D W AU - Genc, A AU - Fredrickson, J K AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 573 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - isotopes KW - microstructure KW - characterization KW - crystal structure KW - remediation KW - ground water KW - XANES spectra KW - radioactive isotopes KW - transport KW - oxides KW - spectra KW - water pollution KW - heavy metals KW - high-resolution methods KW - pollutants KW - pollution KW - electron microscopy data KW - bioremediation KW - X-ray spectra KW - TEM data KW - metals KW - bacteria KW - EXAFS data KW - uranium KW - uraninite KW - actinides KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692746226?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Bacterially-produced+uraninite%3B+ultrastructural+characterization+by+high+resolution+imaging+and+analyses&rft.au=Dohnalkova%2C+Alice+C%3BMarshall%2C+M+J%3BKemner%2C+K+M%3BKennedy%2C+D+W%3BGenc%2C+A%3BFredrickson%2C+J+K%3BAnonymous&rft.aulast=Dohnalkova&rft.aufirst=Alice&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=573&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 3 N1 - Last updated - 2015-07-02 N1 - SubjectsTermNotLitGenreText - actinides; bacteria; bioremediation; characterization; crystal structure; electron microscopy data; EXAFS data; ground water; heavy metals; high-resolution methods; isotopes; metals; microstructure; oxides; pollutants; pollution; radioactive isotopes; remediation; spectra; TEM data; transport; uraninite; uranium; water pollution; X-ray spectra; XANES spectra ER - TY - JOUR T1 - CHILI; Is it ready yet? AN - 1692744963; 2015-063271 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Davis, Andrew M AU - Stephan, Thomas AU - Pellin, Michael J AU - Rost, Detlef AU - Savina, Michael R AU - Trappitsch, Reto AU - Liu, Nan AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 504 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - CHILI KW - chemical analysis KW - laser methods KW - mass spectroscopy KW - CHicago Instrument for Laser Ionization KW - spectroscopy KW - ions KW - geochemistry KW - instruments KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744963?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=CHILI%3B+Is+it+ready+yet%3F&rft.au=Davis%2C+Andrew+M%3BStephan%2C+Thomas%3BPellin%2C+Michael+J%3BRost%2C+Detlef%3BSavina%2C+Michael+R%3BTrappitsch%2C+Reto%3BLiu%2C+Nan%3BAnonymous&rft.aulast=Davis&rft.aufirst=Andrew&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=504&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 1 N1 - Last updated - 2015-07-02 N1 - SubjectsTermNotLitGenreText - chemical analysis; CHicago Instrument for Laser Ionization; CHILI; geochemistry; instruments; ions; laser methods; mass spectroscopy; spectroscopy ER - TY - JOUR T1 - Conceptual Design of an Accelerator-Driven Subcritical System to Dispose the Minor Actinide Fuels AN - 1692334987; PQ0001263276 AB - A conceptual study of a Minor Actinides (MAs) Burner using an Accelerator-Driven Subcritical (ADS) System has shown that about four ADS units are required to utilize the total 115 tons of MAs in the current U.S. Spent Nuclear Fuel (SNF) inventory [1, 2]. The subcritical assembly core is driven by a 25 MW proton beam utilizing 1 GeV protons for producing the required neutron source. Each unit generates 3 GW of fission power in the subcriticai core. The neutron multiplication factor of the subcritical core is 0.98. JF - Transactions of the American Nuclear Society AU - Cao, Yan AU - Gohar, Yousry AU - Merzari, Elia AU - Kraus, Adam R AD - Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60439 ycao@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 1320 EP - 1322 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Inventories KW - Stockpiling KW - Neutron sources KW - Design engineering KW - Spent nuclear fuels KW - Assembly KW - Proton beams KW - Actinides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692334987?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Conceptual+Design+of+an+Accelerator-Driven+Subcritical+System+to+Dispose+the+Minor+Actinide+Fuels&rft.au=Cao%2C+Yan%3BGohar%2C+Yousry%3BMerzari%2C+Elia%3BKraus%2C+Adam+R&rft.aulast=Cao&rft.aufirst=Yan&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1320&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-12-07 ER - TY - JOUR T1 - Neutronics Analyses for an LEU Core for TREAT AN - 1692324329; PQ0001263259 AB - Since 1978, the Reduced Enrichment for Research and Test Reactors (RERTR) program has worked to convert nuclear facilities from the use of high enriched uranium (HEU) to low enriched uranium (LEU, defined as uranium with less than 20% super(235)U). In 2004 this program was incorporated into the Global Threat Reduction Initiative (GTRI), an organization created by the U.S. Department of Energy (DOE) National Nuclear Security Administration (NNSA) to reduce and protect vulnerable nuclear and radiological materials worldwide [1]. Work is currently underway to evaluate the feasibility of an LEU conversion of the Transient Reactor Test Facility (TREAT) at Idaho National Laboratory (INL). This analysis is a collaborative effort between GTRI staff at Argonne National Laboratory (ANL) and INL. JF - Transactions of the American Nuclear Society AU - Kontogeorgakos, Dimitrios C AU - Connaway, Heather M AU - Wright, Arthur E AU - Yesilyurt, Gokhan AU - Derstine, Keith L AU - DeHart, Mark D AU - Morrell, Sean R AD - Argonne National Laboratory, 9700 S Cass Ave, Argonne lL 60439 Y1 - 2014 PY - 2014 DA - 2014 SP - 1248 EP - 1251 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Security KW - Feasibility KW - Energy (nuclear) KW - Uranium KW - Conversion KW - Nuclear reactor components KW - Enrichment KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692324329?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Neutronics+Analyses+for+an+LEU+Core+for+TREAT&rft.au=Kontogeorgakos%2C+Dimitrios+C%3BConnaway%2C+Heather+M%3BWright%2C+Arthur+E%3BYesilyurt%2C+Gokhan%3BDerstine%2C+Keith+L%3BDeHart%2C+Mark+D%3BMorrell%2C+Sean+R&rft.aulast=Kontogeorgakos&rft.aufirst=Dimitrios&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1248&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-12-07 ER - TY - JOUR T1 - Thorium Fuel Cycle Option Screening and Path Forward in the U.S. AN - 1692316282; PQ0001262985 AB - Thorium fuel cycles have been of interest in the U.S. from the early days of nuclear energy when it was thought that uranium resources might be too scarce to sustain a large deployment of nuclear power plants. Thorium related studies are continuing to the current time. The recently completed Nuclear Fuel Cycle Evaluation and Screening (E&S) Study[1] evaluated fuel cycle options using natural thorium fuel as alternative to those using natural uranium in the fully deployed equilibrium state. In the study, 40 fuel cycle evaluation groups (EGs) were used to provide a comprehensive assessment of fuel cycle options. Fifteen (15) of the 40 evaluation groups focused on fuel cycles that incorporated the use of thorium based fuel either as thorium (Th) only or thorium with uranium (UTh). JF - Transactions of the American Nuclear Society AU - Taiwo, Temitope A AU - Kim, Taek K AU - Wigeland, Roald A AD - Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 Y1 - 2014 PY - 2014 DA - 2014 SP - 187 EP - 189 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Screening KW - Nuclear power generation KW - Thorium KW - Assessments KW - Uranium KW - Fuel cycles KW - Nuclear fuels KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692316282?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Thorium+Fuel+Cycle+Option+Screening+and+Path+Forward+in+the+U.S.&rft.au=Taiwo%2C+Temitope+A%3BKim%2C+Taek+K%3BWigeland%2C+Roald+A&rft.aulast=Taiwo&rft.aufirst=Temitope&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=187&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Reactivity Measurements in Subcritical Assemblies Combining MSM and Area Methods AN - 1692315792; PQ0001263279 AB - In subcritical systems, the Modified Source Multiplication (MSM) method [1] requires a reference point to define the reactivity. Traditionally, a critical configuration provides this reference point, which is not possible for accelerator driven systems designed without a control system. In order to address this issue, this work explores a new calculation methodology to estimate the reactivity of a subcriticai assembly without using a critical reference configuration. The methodology is based on using the Area method, [2] which provides the reference point. JF - Transactions of the American Nuclear Society AU - Talamo, A AU - Gohar, Y AU - Sadovich, S AU - Kiyavitskaya, H AU - Bournos, V AU - Fokov, Y AD - Argonne National Laboratory, 9700 South Cass A venue, Argonne, IL 60439, USA alby@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 1331 EP - 1334 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Multiplication KW - Estimates KW - Control systems KW - Assemblies KW - Accelerators KW - Methodology KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692315792?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Reactivity+Measurements+in+Subcritical+Assemblies+Combining+MSM+and+Area+Methods&rft.au=Talamo%2C+A%3BGohar%2C+Y%3BSadovich%2C+S%3BKiyavitskaya%2C+H%3BBournos%2C+V%3BFokov%2C+Y&rft.aulast=Talamo&rft.aufirst=A&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1331&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Assessment of a Closed Fuel Cycle Using Less Attractive Material in a Small Modular Fast Reactor AN - 1692315694; PQ0001262997 AB - Continuous recycle of Plutonium (Pu) or Transuranics (TRU) along with the recovered uranium in fast critical reactors is a very promising fuel cycle option to improve natural resource utilization and reduce highly-radioactive nuclear waste generation. However, the potential attractiveness of fuel cycle materials for proliferation is always a consideration, along with safeguardability and non-technical factors, and fast reactors might need to limit the attractiveness of the fissile material in the fuel in a similar way that thermal and experimental reactors limit their uranium enrichment to 20% using Low-Enriched Uranium (LEU). JF - Transactions of the American Nuclear Society AU - Stauff, N E AU - Kim, T K AU - Taiwo, T A AU - Wigeland, R A AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, U.S.A. nstauff@.anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 228 EP - 230 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power generation KW - Plutonium KW - Nuclear reactors KW - Uranium KW - Fuel cycles KW - Nuclear fuels KW - Nuclear reactor components KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692315694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Assessment+of+a+Closed+Fuel+Cycle+Using+Less+Attractive+Material+in+a+Small+Modular+Fast+Reactor&rft.au=Stauff%2C+N+E%3BKim%2C+T+K%3BTaiwo%2C+T+A%3BWigeland%2C+R+A&rft.aulast=Stauff&rft.aufirst=N&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=228&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Initial Verification of Heterogeneous Multigroup Cross Sections in MC super(2)-3/PROTEUS AN - 1692313401; PQ0001263249 AB - The PROTEUS-SN transport code [1,2] was developed at Argonne National Laboratory under the DOE NEAMS program to provide a heterogeneous geometry neutron transport capability for use in coupled multi-physics nuclear reactor applications. PROTEUS-SN uses an unstructured finite element mesh and can therefore model arbitrarily complex geometries. In the past, PROTEUS-SN has been successfully demonstrated to handle complex heterogeneous geometries such as the Advanced Test Reactor (ATR) [3] and the Zero Power Reactor (ZPR6) [4]. However, in such heterogeneous geometry calculations, the well-known homogenization method of generating multi-group cross sections does not apply and can lead to inaccuracies in the heterogeneous transport calculation. The generation of accurate, heterogeneous multigroup cross sections is therefore a fundamental issue for performing heterogeneous reactor calculations. JF - Transactions of the American Nuclear Society AU - Hader, Jacob S AU - Shemon, Emily R AU - Lee, Changho AD - Purdue University, School of Nuclear Engineering, 400 Central Drive, West Lafayette, IN 47907 Y1 - 2014 PY - 2014 DA - 2014 SP - 1213 EP - 1216 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Finite element method KW - Nuclear reactors KW - Mathematical models KW - Homogenizing KW - Transport KW - Cross sections KW - Nuclear engineering KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692313401?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Initial+Verification+of+Heterogeneous+Multigroup+Cross+Sections+in+MC+super%282%29-3%2FPROTEUS&rft.au=Hader%2C+Jacob+S%3BShemon%2C+Emily+R%3BLee%2C+Changho&rft.aulast=Hader&rft.aufirst=Jacob&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1213&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-12-07 ER - TY - JOUR T1 - Ultrasonic Waveguide Transducer for Under-Sodium Defect Detection and Component Recognition AN - 1692305198; PQ0001263060 AB - An under-sodium viewing (USV) system will be an essential instrument for real-time monitoring of core operation and/or in-situ inspection of components in a sodium-cooled fast reactor (SFR). The USV system must be capable of operating in the high-temperature and corrosive environment of liquid sodium. By developing the ultrasonic waveguide technology, we overcome the major technical challenge in developing an USV system that can sustain the high-temperature, high-radiation, and corrosive environment. Four types of waveguide designs, smooth rod, threaded rod, bundle rod, and spiraled-sheet rod, were evaluated in water. The chosen design of the ultrasonic waveguide transducer (UWT) prototypes is a hybrid rod that composes of bundle and spiraled-sheet. JF - Transactions of the American Nuclear Society AU - Chien, H-T AU - Lawrence, W P AU - Engel, D AU - Sheen, S-H AU - Grandy, C AD - Nuclear Energy Division, Argonne National Laboratory 9700 S. Cass Ave. Argonne, IL 60439 USA htchien@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 480 EP - 483 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); Corrosion Abstracts (CO); CSA / ASCE Civil Engineering Abstracts (CE) KW - Waveguides KW - Ultrasonic testing KW - Transducers KW - Design engineering KW - Corrosion environments KW - Threaded KW - Bundling KW - Nuclear reactor components UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692305198?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Ultrasonic+Waveguide+Transducer+for+Under-Sodium+Defect+Detection+and+Component+Recognition&rft.au=Chien%2C+H-T%3BLawrence%2C+W+P%3BEngel%2C+D%3BSheen%2C+S-H%3BGrandy%2C+C&rft.aulast=Chien&rft.aufirst=H-T&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=480&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - SFR Duct Wall Temperature Prediction with a Porous Medium Model AN - 1692305115; PQ0001263359 AB - Core designers for liquid metal fast reactors have evolved a number of numerical methods for predicting temperature and pressure distribution within these assemblies in order to determine cladding hot spots, assembly bowing and deformation. In many existing numerical calculations, CFD simulations have achieved a certain level of maturity to reproduce the temperature and velocity field in wire wrap rod bundles assemblies ranging from 7 pins to 217 pins[1,2]. However, these calculations require considerable computational cost and are not well suited for full core calculations. JF - Transactions of the American Nuclear Society AU - Yu, Yiqi AU - Merzari, Elia AU - Thomas, J AD - Argonne National Laboratory: 9700 S. Cass Avenue, Argonne, IL 60439, USA yyu@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 1651 EP - 1653 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Numerical analysis KW - Mathematical models KW - Computer simulation KW - Bundles KW - Assemblies KW - Nuclear reactor components KW - Ducts KW - Porous media UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692305115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=SFR+Duct+Wall+Temperature+Prediction+with+a+Porous+Medium+Model&rft.au=Yu%2C+Yiqi%3BMerzari%2C+Elia%3BThomas%2C+J&rft.aulast=Yu&rft.aufirst=Yiqi&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1651&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Thermal-Hydraulic Core Design Concept of an Accelerator-Driven Minor Actinide Burner AN - 1692304559; PQ0001263305 AB - Spent nuclear fuel disposal is an important issue for the nuclear power industry and the general public. Several concepts have been proposed to confront and solve this issue. Accelerator-Driven Systems (ADS) are under consideration around the world to dispose of spent nuclear fuels. JF - Transactions of the American Nuclear Society AU - Kraus, Adam AU - Merzari, Elia AU - Cao, Yan AU - Gohar, Yousry AD - Argorme National Laboratory, 9700 S Cass Ave., Argonne, IL 60439 arkraus@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 1437 EP - 1439 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power KW - Design engineering KW - Spent nuclear fuels KW - Actinides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692304559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Thermal-Hydraulic+Core+Design+Concept+of+an+Accelerator-Driven+Minor+Actinide+Burner&rft.au=Kraus%2C+Adam%3BMerzari%2C+Elia%3BCao%2C+Yan%3BGohar%2C+Yousry&rft.aulast=Kraus&rft.aufirst=Adam&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1437&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Establishing Technical Basis for Extended Long-Term Storage of Used Fuel AN - 1692302904; PQ0001263019 AB - The goal of the aging management report is to help establish the technical basis for extended long-term storage and subsequent transportation of used fuel, which may occur multiple times before final disposal, at a mined repository or geological disposal facility. It is suggested that future efforts should include development of additional TLAAs and AMPs that may be deemed necessary, and further evaluation of the adequacy of the recommended TLAAs and AMPs that may need augmentation. Industry and site-specific operating experience from the various DCSSs/ISFSIs located across the country should be periodically examined to (a) ascertain the potential aging effects on the SSCs in the DCS Ss, thereby enabling a compilation of existing aging management activities, and (b) assess these activities' adequacy for extended long-term storage and subsequent transportation of used fuel. JF - Transactions of the American Nuclear Society AU - Liu, Y Y AU - Chopra, O K AU - Diercks, D R AU - Han, Z AU - Fabian, R R AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439 yyliu@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 327 EP - 329 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Transportation KW - Management KW - Repositories KW - Fuels KW - Adequacy KW - Geology KW - Management reports KW - Augmentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692302904?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Establishing+Technical+Basis+for+Extended+Long-Term+Storage+of+Used+Fuel&rft.au=Liu%2C+Y+Y%3BChopra%2C+O+K%3BDiercks%2C+D+R%3BHan%2C+Z%3BFabian%2C+R+R&rft.aulast=Liu&rft.aufirst=Y&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=327&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Sensitivity/Uncertainty Analysis of Mean Generation Time with Deterministic Codes AN - 1692300414; PQ0001263289 AB - Sensitivity coefficients are an important tool in reactor physics that are the base of several relevant applications for core design, optimization and analysis. Up to now, sensitivities have been calculated for key integral parameters such as multiplication factor, spectral indices, reaction rates (including power), reaction rate ratios (including peak power) and reactivity worth (such as Doppler, coolant void, burnup and control rod reactivity worth). The effective delayed neutron fraction beta sub(eff), and the mean generation time Delta , generally have not been investigated in recent sensitivity studies. Note that the prompt neutron lifetime, Delta p is only different from A by the eigenvalue and thus one can obtain either rather simply. PERSENT [1] is a new code that has been developed at ANL for performing sensitivity analysis. JF - Transactions of the American Nuclear Society AU - Aliberti, Gerardo AU - Smith, Micheal A AD - Argonne National Laboratory, 9700 S. Cass Ave, Argonne IL 60439 aliberti@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 1373 EP - 1376 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power generation KW - Eigenvalues KW - Sensitivity analysis KW - Doppler effect KW - Reactions (nuclear) KW - Voids KW - Tools KW - Reactor physics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692300414?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Sensitivity%2FUncertainty+Analysis+of+Mean+Generation+Time+with+Deterministic+Codes&rft.au=Aliberti%2C+Gerardo%3BSmith%2C+Micheal+A&rft.aulast=Aliberti&rft.aufirst=Gerardo&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=1373&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-12-07 ER - TY - JOUR T1 - The Effect of Fuel Size on the Performance of a U-Mo/Al Dispersion Fuel AN - 1692300382; PQ0001263093 AB - The effect of fuel particle size on performance of U-Mo/Al dispersion fuel during irradiation was analyzed using PIE data. The specimen having larger fuel particle size perform better where the IL growth was lower and meat swelling was also lower. JF - Transactions of the American Nuclear Society AU - Kim, Yeon Sod AU - Park, J M AU - Ye, B AD - Argonne National Laboratory, 9700 S. Cass Ave, Argonne, IL 60439, USA Y1 - 2014 PY - 2014 DA - 2014 SP - 596 EP - 597 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Particle size KW - Meat KW - Dispersions KW - Irradiation KW - Fuels KW - Aluminum KW - Swelling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692300382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=The+Effect+of+Fuel+Size+on+the+Performance+of+a+U-Mo%2FAl+Dispersion+Fuel&rft.au=Kim%2C+Yeon+Sod%3BPark%2C+J+M%3BYe%2C+B&rft.aulast=Kim&rft.aufirst=Yeon&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=596&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Impacts of Nuclear Material Management Approaches on Fuel Cycle Performance AN - 1692300361; PQ0001263002 AB - A once-through fuel cycle option which is quite similar to the implementation of commercial nuclear power in the U.S. is used to represent the once-through fuel cycle options in this assessment. This system is referred to as EG01 in the E&S study. The fuel cycle uses enriched uranium fuel in light water reactors (LWRs). It is assumed that upon discharge of the fuel from the reactor, it is cooled arid subsequently sent to waste disposal. A two-stage continuous-recycle fuel cycle option using LWRs in the first stage and fast reactors in the second stage is used to represent the recycle options considered in this assessment. JF - Transactions of the American Nuclear Society AU - Taiwo, T A AU - Kim, T K AU - Stauff, N E AU - Wigeland, R A AD - Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439, U.S.A. Y1 - 2014 PY - 2014 DA - 2014 SP - 249 EP - 252 PB - American Nuclear Society, Inc. VL - 111 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power generation KW - Enriched fuel reactors KW - Nuclear reactors KW - Assessments KW - Fuel cycles KW - Nuclear reactor components KW - Light water reactors KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692300361?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Impacts+of+Nuclear+Material+Management+Approaches+on+Fuel+Cycle+Performance&rft.au=Taiwo%2C+T+A%3BKim%2C+T+K%3BStauff%2C+N+E%3BWigeland%2C+R+A&rft.aulast=Taiwo&rft.aufirst=T&rft.date=2014-01-01&rft.volume=111&rft.issue=&rft.spage=249&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-07-01 N1 - Last updated - 2015-07-01 ER - TY - JOUR T1 - Assessment of location, impacts, potential risks, and cleanup costs of defense-related uranium mines in the United States AN - 1686061632; 2015-051464 AB - A 2014 Report to Congress identified mines in the United States that provided uranium ore to the U.S. Atomic Energy Commission (AEC) between 1947 and 1970. The report identified their locations, reclamation/remediation status, radiological risks and other hazards, costs for reclamation and remediation, and prioritization for mine cleanup. For developing reclamation and remediation cleanup cost estimates and assessing risks, mines were grouped into six categories by tons of ore produced, ranging from Small (500,000). Radiological risk was calculated using RESRAD computer code for five exposure scenarios: offsite and onsite residents, occasional visitor, recreational visitor, and mine reclamation worker. Results indicate that 69% of the mines are in Colorado and Utah, 23% are in Arizona, Wyoming, and New Mexico; 68% of mines produced <1000 tons of uranium ore. Although having fewer mines (247) than the other states in the Colorado Plateau region, New Mexico mines produced 45% of the 79.5 million tons of AEC uranium ore, primarily from the Grants Mineral Belt. About 50% of the mines are on public land managed by the Bureau of Land Management; 435 mines are on the Navajo Nation. Risk estimates for the onsite resident scenario (plausible on tribal and non-federal land) could result in incremental cancer risk greater than 10 (super -4) . Radon inhalation was the dominant contributor to radiological risk for the five exposure scenarios evaluated. Different state and federal agencies are conducting cleanup of some mines under various remedial authorities. Activities constituting mine "reclamation" may reduce radiological risks to humans to acceptable levels for many mines on federal public lands if occasional visitor and recreational scenarios are assumed. Addressing physical hazards (e.g., open shafts) at mines where conditions can cause serious injuries typically is a priority of public land management agencies. Where mine-related groundwater contamination occurs, it is a significant contributor to cleanup costs. However, most Small and Small/Medium mines were likely developed above the water table, and many "wet" mines are in areas where naturally occurring elements (including radioactive elements) that are typically associated with uranium mines also occur in naturally high concentrations. JF - Abstracts with Programs - Geological Society of America AU - Shafer, David S AU - Dam, William L AU - Steckley, Deborah AU - Cummins, Laura AU - Elmer, John AU - Ford, John AU - Picel, Mary H AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 731 PB - Geological Society of America (GSA), Boulder, CO VL - 46 IS - 6 SN - 0016-7592, 0016-7592 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686061632?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Assessment+of+location%2C+impacts%2C+potential+risks%2C+and+cleanup+costs+of+defense-related+uranium+mines+in+the+United+States&rft.au=Shafer%2C+David+S%3BDam%2C+William+L%3BSteckley%2C+Deborah%3BCummins%2C+Laura%3BElmer%2C+John%3BFord%2C+John%3BPicel%2C+Mary+H%3BAnonymous&rft.aulast=Shafer&rft.aufirst=David&rft.date=2014-01-01&rft.volume=46&rft.issue=6&rft.spage=731&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2014 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2015-06-05 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Influence of natural organic acids on lead(II) adsorption on hematite AN - 1686058778; 2015-049155 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Noerpel, Matthew AU - Lee, Sang Soo AU - Lenhart, John J AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1821 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - experimental studies KW - colloidal materials KW - mineral-water interface KW - lead KW - adsorption KW - humic acids KW - X-ray spectra KW - organic compounds KW - organic acids KW - humic substances KW - single-crystal method KW - transport KW - hematite KW - metals KW - oxides KW - spectra KW - phthalic acid KW - pH KW - 02C:Geochemistry of rocks, soils, and sediments KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686058778?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Influence+of+natural+organic+acids+on+lead%28II%29+adsorption+on+hematite&rft.au=Noerpel%2C+Matthew%3BLee%2C+Sang+Soo%3BLenhart%2C+John+J%3BAnonymous&rft.aulast=Noerpel&rft.aufirst=Matthew&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1821&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-06-05 N1 - SubjectsTermNotLitGenreText - adsorption; colloidal materials; experimental studies; hematite; humic acids; humic substances; lead; metals; mineral-water interface; organic acids; organic compounds; oxides; pH; phthalic acid; single-crystal method; spectra; transport; X-ray spectra ER - TY - JOUR T1 - Paleontology at the advanced photon source; new resources for paleontological research AN - 1680755892; 2015-044017 AB - In the last years, paleontological projects have become more common in synchrotron light sources. The vast majority of these studies were based in three dimensional tomography of specimens which internal or external anatomy was not accesible by conventional optical methods, such as opaque amber or nodule fossils. Also, this techniques have been used on specimens very scarce in the fossil record, to obtain data without harming permanently the integrity of the piece. At the Advance Photon Source in Argonne National Laboratory in US the use of high resolution tomography on fossils has increased in the last year, showing the capabilities of the instruments in this laboratory. Moreover, other techniques have been made available for paleontological community in this 3rd generation synchrotron light source to obtain a more detailed level of information of paleontological samples, such as fluorescence microscopy, nanotomography or diffraction tomography. JF - Abstracts with Programs - Geological Society of America AU - Soriano, Carmen AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 702 PB - Geological Society of America (GSA), Boulder, CO VL - 46 IS - 6 SN - 0016-7592, 0016-7592 KW - 08:General paleontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1680755892?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Paleontology+at+the+advanced+photon+source%3B+new+resources+for+paleontological+research&rft.au=Soriano%2C+Carmen%3BAnonymous&rft.aulast=Soriano&rft.aufirst=Carmen&rft.date=2014-01-01&rft.volume=46&rft.issue=6&rft.spage=702&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2014 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2016-10-25 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - The effects of hydraulic fracturing water volumes on life cycle water consumption for shale oil and gas AN - 1676586520; 2015-038935 AB - The rapid development of unconventional oil and gas resources from shale plays underscore the need to better understand its environmental implications, including water consumption. Water consumption during development and production has been evaluated for several shale plays from both shale gas plays and shale oil plays. This study presents an overview of results, discussing differences in spatial and temporal variability for five major shale plays: Bakken, Barnett, Haynesville, Fayetteville, and Marcellus. The results for the four shale gas plays are also incorporated into a lifecycle analysis to understand the relative magnitude of water consumption associated with development and production of gas relative to other lifecycle stages associated with natural gas use for transportation or electric power. Although shale gas consumes more water over its lifecycle than conventional natural gas consumes, when used as a transportation fuel, shale gas consumes significantly less water than other transportation fuels. When used for electricity generation, the impact of fuel production is small relative to that of natural gas power plant operations. The type of natural gas power plant is far more important than the source of the natural gas. JF - Abstracts with Programs - Geological Society of America AU - Clark, Corrie AU - Horner, Robert AU - Harto, Christopher AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 478 PB - Geological Society of America (GSA), Boulder, CO VL - 46 IS - 6 SN - 0016-7592, 0016-7592 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1676586520?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+effects+of+hydraulic+fracturing+water+volumes+on+life+cycle+water+consumption+for+shale+oil+and+gas&rft.au=Clark%2C+Corrie%3BHorner%2C+Robert%3BHarto%2C+Christopher%3BAnonymous&rft.aulast=Clark&rft.aufirst=Corrie&rft.date=2014-01-01&rft.volume=46&rft.issue=6&rft.spage=478&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2014 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2015-04-30 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Dynamic Scheduling of Operating Reserves in Co-Optimized Electricity Markets With Wind Power AN - 1671612117; 18958687 AB - We propose a probabilistic methodology to estimate a demand curve for operating reserves, where the curve represents the amount that a system operator is willing to pay for these services. The demand curve is quantified by the cost of unserved energy and the expected loss of load, accounting for uncertainty from generator contingencies, load forecasting errors, and wind power forecasting errors. The methodology addresses two key challenges in electricity market design: integrating wind power more efficiently and improving scarcity pricing. In a case study, we apply the proposed operating reserve strategies in a two-settlement electricity market with centralized unit commitment and economic dispatch and co-optimization of energy and reserves. We compare the proposed probabilistic approach to traditional operating reserve rules. We use the Illinois power system to illustrate the efficiency of the proposed reserve market modeling approach when it is combined with probabilistic wind power forecasting. JF - IEEE Transactions on Power Systems AU - Zhou, Zhi AU - Botterud, Audun AD - Argonne National Laboratory, Argonne, IL, USA Y1 - 2014/01// PY - 2014 DA - Jan 2014 SP - 160 EP - 171 PB - Institute of Electrical and Electronics Engineers, Inc., 3 Park Avenue, 17th Fl New York NY 10016-5997 United States VL - 29 IS - 1 SN - 0885-8950, 0885-8950 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE); ANTE: Abstracts in New Technologies and Engineering (AN) KW - Wind power KW - Electric power generation KW - Dynamical systems KW - Reserves KW - Probability theory KW - Electricity KW - Markets KW - Dynamics KW - Yes:(AN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1671612117?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=IEEE+Transactions+on+Power+Systems&rft.atitle=Dynamic+Scheduling+of+Operating+Reserves+in+Co-Optimized+Electricity+Markets+With+Wind+Power&rft.au=Zhou%2C+Zhi%3BBotterud%2C+Audun&rft.aulast=Zhou&rft.aufirst=Zhi&rft.date=2014-01-01&rft.volume=29&rft.issue=1&rft.spage=160&rft.isbn=&rft.btitle=&rft.title=IEEE+Transactions+on+Power+Systems&rft.issn=08858950&rft_id=info:doi/10.1109%2FTPWRS.2013.2281504 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-02-01 N1 - Last updated - 2015-04-09 DO - http://dx.doi.org/10.1109/TPWRS.2013.2281504 ER - TY - JOUR T1 - Nondestructive mapping of distinctive features in a likely thermally altered interplanetary dust particle AN - 1668230638; 2015-027468 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Hu, Z W AU - Winarski, R AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2708 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - tomography KW - high-resolution methods KW - three-dimensional models KW - thermal alteration KW - atmospheric entry KW - textures KW - microstructure KW - interplanetary dust KW - nondestructive methods KW - morphology KW - cosmic dust KW - nanoscale KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668230638?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Nondestructive+mapping+of+distinctive+features+in+a+likely+thermally+altered+interplanetary+dust+particle&rft.au=Hu%2C+Z+W%3BWinarski%2C+R%3BAnonymous&rft.aulast=Hu&rft.aufirst=Z&rft.date=2014-01-01&rft.volume=45&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2014/pdf/2708.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on Sept. 5, 2014 N1 - Last updated - 2015-04-02 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - atmospheric entry; cosmic dust; high-resolution methods; interplanetary dust; microstructure; morphology; nanoscale; nondestructive methods; textures; thermal alteration; three-dimensional models; tomography ER - TY - JOUR T1 - Exchange kinetics of monovalent cations at the muscovite(001)-water interface AN - 1668230017; 2015-027998 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Lee, Sang Soo AU - Nagy, Kathryn L AU - Sturchio, Neil C AU - Fenter, Paul AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1391 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - water KW - silicates KW - processes KW - sorption KW - in situ KW - muscovite KW - rubidium KW - alkali metals KW - mineral-water interface KW - rates KW - adsorption KW - sodium KW - simulation KW - ions KW - observations KW - X-ray data KW - chemical reactions KW - transport KW - mica group KW - metals KW - cations KW - sheet silicates KW - kinetics KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668230017?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Exchange+kinetics+of+monovalent+cations+at+the+muscovite%28001%29-water+interface&rft.au=Lee%2C+Sang+Soo%3BNagy%2C+Kathryn+L%3BSturchio%2C+Neil+C%3BFenter%2C+Paul%3BAnonymous&rft.aulast=Lee&rft.aufirst=Sang&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1391&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 2 N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - adsorption; alkali metals; cations; chemical reactions; in situ; ions; kinetics; metals; mica group; mineral-water interface; muscovite; observations; processes; rates; rubidium; sheet silicates; silicates; simulation; sodium; sorption; transport; water; X-ray data ER - TY - JOUR T1 - Equilibrium Fe-isotope fractionation applied to cooling rates of iron meteorites AN - 1668228724; 2015-027928 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Kracwzynski, M J AU - Van Orman, J A AU - Dauphas, N AU - Alp, E E AU - Hu, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1321 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - isotope fractionation KW - isotopes KW - kamacite KW - planetesimals KW - solution KW - simulation KW - stable isotopes KW - iron KW - meteorites KW - taenite KW - iron meteorites KW - cooling KW - alloys KW - troilite KW - processes KW - textures KW - isotope ratios KW - parent bodies KW - differentiation KW - rates KW - models KW - metals KW - Fe-57/Fe-54 KW - Fe-56/Fe-54 KW - sulfides KW - 05B:Petrology of meteorites and tektites KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668228724?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Equilibrium+Fe-isotope+fractionation+applied+to+cooling+rates+of+iron+meteorites&rft.au=Kracwzynski%2C+M+J%3BVan+Orman%2C+J+A%3BDauphas%2C+N%3BAlp%2C+E+E%3BHu%2C+M%3BAnonymous&rft.aulast=Kracwzynski&rft.aufirst=M&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1321&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - alloys; cooling; differentiation; Fe-56/Fe-54; Fe-57/Fe-54; iron; iron meteorites; isotope fractionation; isotope ratios; isotopes; kamacite; metals; meteorites; models; parent bodies; planetesimals; processes; rates; simulation; solution; stable isotopes; sulfides; taenite; textures; troilite ER - TY - JOUR T1 - Nucleation of magnesium carbonate on quartz surfaces using in situ GISAXS AN - 1668228700; 2015-027996 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Lee, Namhey AU - Lee, Byeongdu AU - Waychunas, Glenn A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1389 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - silicates KW - processes KW - in situ KW - silica minerals KW - magnesium carbonate KW - solution KW - carbon dioxide KW - X-ray data KW - nucleation KW - quantitative analysis KW - quartz KW - framework silicates KW - carbonates KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668228700?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Nucleation+of+magnesium+carbonate+on+quartz+surfaces+using+in+situ+GISAXS&rft.au=Lee%2C+Namhey%3BLee%2C+Byeongdu%3BWaychunas%2C+Glenn+A%3BAnonymous&rft.aulast=Lee&rft.aufirst=Namhey&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1389&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - carbon dioxide; carbonates; framework silicates; in situ; magnesium carbonate; nucleation; processes; quantitative analysis; quartz; silica minerals; silicates; solution; X-ray data ER - TY - JOUR T1 - Uranium(IV) surface complexes form by U(VI) reduction at the mineral-water interface AN - 1668228502; 2015-027971 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Latta, Drew E AU - Mishra, Bhoopesh AU - Cook, Russell E AU - Kemner, Kenneth M AU - Boyanov, Maxim I AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 1364 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - oxidation KW - uranyl ion KW - pollution KW - mineral-water interface KW - X-ray spectra KW - remediation KW - radioactive waste KW - ground water KW - models KW - metals KW - sediments KW - rutile KW - oxides KW - uranium KW - spectra KW - reduction KW - waste disposal KW - water pollution KW - uraninite KW - geochemistry KW - actinides KW - magnetite KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1668228502?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Uranium%28IV%29+surface+complexes+form+by+U%28VI%29+reduction+at+the+mineral-water+interface&rft.au=Latta%2C+Drew+E%3BMishra%2C+Bhoopesh%3BCook%2C+Russell+E%3BKemner%2C+Kenneth+M%3BBoyanov%2C+Maxim+I%3BAnonymous&rft.aulast=Latta&rft.aufirst=Drew&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=1364&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ L2 - http://goldschmidt.info/2014/uploads/abstracts/finalPDFs/A-Z.pdf LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Last updated - 2015-04-02 N1 - SubjectsTermNotLitGenreText - actinides; geochemistry; ground water; magnetite; metals; mineral-water interface; models; oxidation; oxides; pollution; radioactive waste; reduction; remediation; rutile; sediments; spectra; uraninite; uranium; uranyl ion; waste disposal; water pollution; X-ray spectra ER - TY - JOUR T1 - Multiple-length-scale study of the origin of capillary heterogeneities in sandstone AN - 1664434263; 2015-023715 AB - Understanding multi-phase flow dynamics in rocks and quantification of the underlying correlated capillary heterogeneities plays a crucial role in various research areas, ranging from Carbon Capture and Storage, and Enhanced Oil Recovery to vadose zone environmental remediation. Recent developments in micron-scale X-ray CT give insight into the morphological composition of rocks and, combined with results from medical CT imaging, provide a window into micro-morphological features controlling mm- to cm-scale flow properties. Furthermore, used as input for different modeling approaches, they allow simulation of various pore space properties, such as porosity, permeability, capillary pressure and relative permeability. The object of investigation in this study was a heterogeneous sandstone from the Heletz site in Israel (provided by courtesy of the MUSTANG project). Fluid flow and rock properties of the sandstone were evaluated at several length scales, ranging from permeability measurements on the core scale, capillary pressure measurements on the cm-scale, porosity and capillary pressure measurements on the mm-scale, down to micro CT imaging of morphological features on the micron-scale. The results of this study are twofold: 1) Statistical evaluation of the results at different scales allowed us to find correlations between mm-and cm-scale multi-phase flow properties and micron-sized morphological pore space features. In particular, we were able to identify capillarity-controlling rock and pore morphologies and quantify their impact on local CO (sub 2) saturations measured on the mm-scale, which confirms the dominantly structural origin of capillary heterogeneity. We will present correlations and discuss implications on multi-phase fluid flow in sandstone. 2) In addition, we present a new numerical approach that can provide capillary pressures on the cm-scale without complex simulation, solely using the rock morphology provided by micro CT. Our approach requires neither solving conservation equations, nor depends on the extraction of pore-networks or simplification of process-controlling physics. We present the methodology underlying our new approach and demonstrate its potential at the example of a capillary pressure curve of the Heletz sandstone using respective 3D micro CT images. JF - Abstracts with Programs - Geological Society of America AU - Hingerl, Ferdinand F AU - Yang, Feifei AU - Liu, Yijin AU - Xiao, Xianghui AU - Benson, Sally M AU - Toney, Mike AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 169 PB - Geological Society of America (GSA), Boulder, CO VL - 46 IS - 6 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1664434263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Multiple-length-scale+study+of+the+origin+of+capillary+heterogeneities+in+sandstone&rft.au=Hingerl%2C+Ferdinand+F%3BYang%2C+Feifei%3BLiu%2C+Yijin%3BXiao%2C+Xianghui%3BBenson%2C+Sally+M%3BToney%2C+Mike%3BAnonymous&rft.aulast=Hingerl&rft.aufirst=Ferdinand&rft.date=2014-01-01&rft.volume=46&rft.issue=6&rft.spage=169&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ L2 - https://gsa.confex.com/gsa/2014AM/webprogram/Paper250481.html LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2014 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2015-03-19 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Integrated approaches for sustainable utilization of water resources in arid lands; case studies from Egypt AN - 1660632466; 2015-019204 AB - We integrated (in a Geographic Information System [GIS] environment) observations from remote sensing data (Gravity Recovery and Climate Experiment [GRACE], Environmental Satellite [Envisat], Tropical Rainfall Measuring Mission [TRMM], Landsat Thematic Mapper [TM], Google Earth images) with geophysical (Very Low Frequency [VLF], Vertical Electrical Sounding [VES]), geochemical (O, H stable isotopes), geochronological (Cl-36 and Kr-81 dating methods) data, and hydrologic modeling (groundwater flow and continuous rainfall-runoff models) to accomplish the following: (1) map the distribution of aquifers in the fractured basement complex of the Eastern Desert and the Sinai Peninsula; (2) identify areas of natural discharge of the Nubian Sandstone Aquifer System (NSAS) along deep-seated sub-vertical faults in the overlying aquifers, (3) identify aquifers in subsided blocks of (a) Jurassic to Cretaceous sandstone (Taref Formation) and Oligocene to Miocene sandstone (Nakheil Formation), now occurring beneath the Red Sea coastal plain, (b) the Eocene to Cambrian (Nubian Sandstone) and the Lower Miocene sandstone (Gharandal Group) occurring beneath the Gulf of Suez coastal plain, and (c) within the proximal basement complex, (4) assess the groundwater depletion (natural and anthropogenic) rates, (5) estimate the partitioning of precipitation into runoff, evapotranspiration, infiltration over the Eastern Desert and the Sinai Peninsula watersheds, (6) estimate the current and projected impact of climate change on Egypt's water resources, and (7) develop sustainable utilization scenarios for Egypt's hydrologic systems. JF - Abstracts with Programs - Geological Society of America AU - Sultan, Mohamed AU - Ahmed, Mohamed AU - Milewski, Adam AU - Becker, Richard AU - Yan, Eugene AU - Sturchio, Neil AU - Mohamed, Lamees AU - Zaki, Abotalib AU - Becker, Doris AU - Chouinard, Kyle AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 68 PB - Geological Society of America (GSA), Boulder, CO VL - 46 IS - 6 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660632466?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Integrated+approaches+for+sustainable+utilization+of+water+resources+in+arid+lands%3B+case+studies+from+Egypt&rft.au=Sultan%2C+Mohamed%3BAhmed%2C+Mohamed%3BMilewski%2C+Adam%3BBecker%2C+Richard%3BYan%2C+Eugene%3BSturchio%2C+Neil%3BMohamed%2C+Lamees%3BZaki%2C+Abotalib%3BBecker%2C+Doris%3BChouinard%2C+Kyle%3BAnonymous&rft.aulast=Sultan&rft.aufirst=Mohamed&rft.date=2014-01-01&rft.volume=46&rft.issue=6&rft.spage=68&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2014 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2015-03-05 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Evaluating the performance of land surface models using GRACE data over Africa AN - 1660632450; 2015-019215 AB - We utilize the Gravity Recovery and Climate Experiment (GRACE) and land surface models (LSM: GLDAS and CLM4.5) in conjunction with other readily-available datasets for monitoring the spatial and temporal trends in Terrestrial Water Storage (TWS) over a time period of 10 years (01/2003-12/2012) and to investigate the nature of, and the factors controlling , these variations over Africa. Spatial and temporal correlations of the trends extracted from processed (smoothed [Gaussian: 200km] and destriped) GRACE-derived (TWS (sub GRACE) ) and LSM-derived (TWS (sub LSM) ) TWS indicate the following: (1) Large (> or = 90 % by area) sectors of Africa are undergoing statistically significant TWS (sub GRACE) and TWS (sub LSM) variations due to natural and anthropogenic causes; (2) a general correspondence between TWS (sub GRACE) and TWS (sub LSM) over areas (e.g., Niger and Mozambique NE basins in eastern and western Africa) largely controlled by natural (i.e., increase/decrease in precipitation and/or temperature) causes; (3) discrepancies are observed over areas that witnessed extensive anthropogenic effects measured by TWS (sub GRACE) but unaccounted for by TWS (sub LSM) . Examples include: (a) strong (compared to that observed by TWS (sub LSM) ) negative TWS (sub GRACE) trends were observed over areas that witnessed heavy groundwater extraction (e.g., Western, Desert, Egypt); (b) strong (compared to that observed by TWS (sub LSM) ) positive TWS (sub GRACE) over Lake Volta reservoir; and (c) strong (compared to that observed by TWS (sub LSM) ) negative trends over areas undergoing heavy deforestation (e.g., northern and NW Congo Basin); (4) additional discrepancies in other areas (e.g., Zambezi and the Okavango basins) are attributed to models being uncalibrated and not not simulating all of the TWS components (e.g., river storage and groundwater in GLDAS; lakes and reservoirs in GLDAS and CLM4.5) . Future work should focus on using TWS (sub GRACE) to calibrate TWS (sub LSM) . JF - Abstracts with Programs - Geological Society of America AU - Ahmed, Mohamed AU - Sultan, Mohamed AU - Wahr, John AU - Yan, Eugene AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 70 PB - Geological Society of America (GSA), Boulder, CO VL - 46 IS - 6 SN - 0016-7592, 0016-7592 KW - 21:Hydrogeology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660632450?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Evaluating+the+performance+of+land+surface+models+using+GRACE+data+over+Africa&rft.au=Ahmed%2C+Mohamed%3BSultan%2C+Mohamed%3BWahr%2C+John%3BYan%2C+Eugene%3BAnonymous&rft.aulast=Ahmed&rft.aufirst=Mohamed&rft.date=2014-01-01&rft.volume=46&rft.issue=6&rft.spage=70&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2014 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2015-01-01 N1 - PubXState - CO N1 - Last updated - 2015-03-05 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Discovery of ahrensite gamma -Fe (sub 2) SiO (sub 4) and tissintite (Ca,Na,)AlSi (sub 2) O (sub 6) ; two new high pressure minerals from the Tissint Martian meteorite AN - 1660631215; 2015-018540 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Ma, Chi AU - Tschauner, Oliver AU - Liu, Yang AU - Beckett, John R AU - Rossman, George R AU - Zuravlev, Kirill AU - Prakapenka, Vitali AU - Dera, Przemyslaw AU - Sinogeikin, Stanislav AU - Smith, Jesse AU - Taylor, Lawrence A AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 1222 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - silicates KW - iron silicates KW - refinement KW - stony meteorites KW - Martian meteorites KW - olivine group KW - crystal structure KW - SNC Meteorites KW - ringwoodite KW - meteorites KW - pyroxene group KW - clinopyroxene KW - chemical reactions KW - aluminosilicates KW - orthosilicates KW - tissintite KW - new minerals KW - chain silicates KW - cell dimensions KW - pressure KW - ahrensite KW - jadeite KW - solid solution KW - metamorphism KW - high pressure KW - achondrites KW - nesosilicates KW - Tissint Meteorite KW - shergottite KW - petrography KW - shock metamorphism KW - formula KW - 05B:Petrology of meteorites and tektites KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660631215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Discovery+of+ahrensite+gamma+-Fe+%28sub+2%29+SiO+%28sub+4%29+and+tissintite+%28Ca%2CNa%2C%29AlSi+%28sub+2%29+O+%28sub+6%29+%3B+two+new+high+pressure+minerals+from+the+Tissint+Martian+meteorite&rft.au=Ma%2C+Chi%3BTschauner%2C+Oliver%3BLiu%2C+Yang%3BBeckett%2C+John+R%3BRossman%2C+George+R%3BZuravlev%2C+Kirill%3BPrakapenka%2C+Vitali%3BDera%2C+Przemyslaw%3BSinogeikin%2C+Stanislav%3BSmith%2C+Jesse%3BTaylor%2C+Lawrence+A%3BAnonymous&rft.aulast=Ma&rft.aufirst=Chi&rft.date=2014-01-01&rft.volume=45&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2014/pdf/1222.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 6 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on May 12, 2014 N1 - Last updated - 2015-03-05 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - achondrites; ahrensite; aluminosilicates; cell dimensions; chain silicates; chemical reactions; clinopyroxene; crystal structure; formula; high pressure; iron silicates; jadeite; Martian meteorites; metamorphism; meteorites; nesosilicates; new minerals; olivine group; orthosilicates; petrography; pressure; pyroxene group; refinement; ringwoodite; shergottite; shock metamorphism; silicates; SNC Meteorites; solid solution; stony meteorites; Tissint Meteorite; tissintite ER - TY - JOUR T1 - Analysing pumped storage in the US AN - 1660085947; 21140755 AB - The US Department of Energy recently commissioned a study to analyse the role and value of advanced pumped storage plants across the country. Vladimir Koritarov from Argonne National Laboratory gives more details. JF - International Water Power and Dam Construction AU - Koritarov, Vladimir AD - Argonne National Laboratory PY - 2014 SP - 14 EP - 16 PB - Wilmington Publishing Ltd., Wilmington House, Church Hill, Wilmington Dartford Kent DA2 7EF United Kingdom VL - 66 IS - 10 SN - 0306-400X, 0306-400X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE); ANTE: Abstracts in New Technologies and Engineering (AN) KW - Dam construction KW - Argon KW - Power plants KW - Energy storage KW - Yes:(AN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660085947?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Water+Power+and+Dam+Construction&rft.atitle=Analysing+pumped+storage+in+the+US&rft.au=Koritarov%2C+Vladimir&rft.aulast=Koritarov&rft.aufirst=Vladimir&rft.date=2014-01-01&rft.volume=66&rft.issue=10&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=International+Water+Power+and+Dam+Construction&rft.issn=0306400X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-02-03 ER - TY - JOUR T1 - Experimental study of water film flow on large vertical and inclined flat plate AN - 1660085772; 21140979 AB - Free falling water film flow is widely applied in many industrial fields, including the PCCS (Passive Containment Cooling System) of the Generation III nuclear power plant. This paper describes an experimental study of free falling water film flow on a vertical and an inclined flat plate (2 x 5 m and 0.4 x 5 m). A capacitance probe and high-speed camera were used to capture the characteristics of film flow with different Reynolds (50 ~ 3600). Many statistical variables of the film flow are presented, such as film thickness, wave length, wave frequency, and wave velocity etc. The test data are also compared with Nusselt theory and some empirical correlations from other researches. The effect of Reynolds number and inclination of the plate on film flow are studied. Three transition points which indicate different flow mechanism changes are found by analyzing different statistical film flow variables. With the increase of Reynolds number, the solitary waves of film flow develop from low speed waves of high frequency and short wave length to high speed waves of low frequency and long wave length. Empirical correlations of delta , delta sub(min), delta sub(max), delta sub(sub), delta sub(p), U sub(wave) of film flow on large flat plate are obtained. It could be applied to the safety analysis program for PCCS. JF - Progress in Nuclear Energy AU - Yu, Y Q AU - Cheng, X AD - School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Nuclear Engineering Division, Argonne National Laboratory, Lemont, IL 60439, United States yyu@anl.gov PY - 2014 SP - 176 EP - 186 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 77 SN - 0149-1970, 0149-1970 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE) KW - PCCS KW - Water film KW - Flat plate KW - Solitary wave KW - Inclined plate KW - Nuclear power generation KW - Fluid dynamics KW - Reynolds number KW - High speed KW - Correlation KW - Flat plates KW - Fluid flow UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1660085772?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Progress+in+Nuclear+Energy&rft.atitle=Experimental+study+of+water+film+flow+on+large+vertical+and+inclined+flat+plate&rft.au=Yu%2C+Y+Q%3BCheng%2C+X&rft.aulast=Yu&rft.aufirst=Y&rft.date=2014-01-01&rft.volume=77&rft.issue=&rft.spage=176&rft.isbn=&rft.btitle=&rft.title=Progress+in+Nuclear+Energy&rft.issn=01491970&rft_id=info:doi/10.1016%2Fj.pnucene.2014.07.001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-03-01 N1 - Last updated - 2016-02-03 DO - http://dx.doi.org/10.1016/j.pnucene.2014.07.001 ER - TY - JOUR T1 - Surface-mediated formation of Pu(IV) nanoparticles on muscovite AN - 1656038418; 2015-016975 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Schmidt, Moritz AU - Knope, K E AU - Lee, S S AU - Stubbs, J E AU - Eng, P J AU - Bellucci, F AU - Fenter, P AU - Soderholm, L AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 SP - 2216 PB - Goldschmidt Conference, [varies] VL - 24 SN - 1042-7287, 1042-7287 KW - silicates KW - plutonium KW - oxidation KW - muscovite KW - crystal structure KW - polymerization KW - solution KW - X-ray spectra KW - XANES spectra KW - X-ray data KW - atomic force microscopy data KW - mica group KW - metals KW - sheet silicates KW - spectra KW - nanoparticles KW - actinides KW - 01B:Mineralogy of silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1656038418?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.atitle=Surface-mediated+formation+of+Pu%28IV%29+nanoparticles+on+muscovite&rft.au=Schmidt%2C+Moritz%3BKnope%2C+K+E%3BLee%2C+S+S%3BStubbs%2C+J+E%3BEng%2C+P+J%3BBellucci%2C+F%3BFenter%2C+P%3BSoderholm%2C+L%3BAnonymous&rft.aulast=Schmidt&rft.aufirst=Moritz&rft.date=2014-01-01&rft.volume=24&rft.issue=&rft.spage=2216&rft.isbn=&rft.btitle=&rft.title=V.M.+Goldschmidt+Conference+-+Program+and+Abstracts&rft.issn=10427287&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Goldschmidt 2014 N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 7 N1 - Last updated - 2015-02-19 N1 - SubjectsTermNotLitGenreText - actinides; atomic force microscopy data; crystal structure; metals; mica group; muscovite; nanoparticles; oxidation; plutonium; polymerization; sheet silicates; silicates; solution; spectra; X-ray data; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Iron isotope fractionation between metal and troilite; a new cooling speedometer for iron meteorites AN - 1641011259; 2015-002304 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Krawczynski, M J AU - Van Orman, J A AU - Dauphas, N AU - Alp, E E AU - Hu, M AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2755 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - isotope fractionation KW - isotopes KW - kamacite KW - thermal history KW - stable isotopes KW - nuclear resonant ineastic X-ray scattering KW - iron KW - temperature KW - partitioning KW - meteorites KW - taenite KW - iron meteorites KW - grain boundaries KW - alloys KW - spectra KW - troilite KW - cooling rates KW - experimental studies KW - diffusion KW - numerical models KW - isotope ratios KW - grain size KW - X-ray spectra KW - metals KW - nickel KW - Fe-57/Fe-54 KW - Fe-56/Fe-54 KW - sulfides KW - 05B:Petrology of meteorites and tektites KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1641011259?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Iron+isotope+fractionation+between+metal+and+troilite%3B+a+new+cooling+speedometer+for+iron+meteorites&rft.au=Krawczynski%2C+M+J%3BVan+Orman%2C+J+A%3BDauphas%2C+N%3BAlp%2C+E+E%3BHu%2C+M%3BAnonymous&rft.aulast=Krawczynski&rft.aufirst=M&rft.date=2014-01-01&rft.volume=45&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2014/pdf/2755.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2015-01-01 N1 - Number of references - 10 N1 - PubXState - TX N1 - Document feature - illus. N1 - SuppNotes - Accessed on June 3, 2014 N1 - Last updated - 2014-12-31 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - alloys; cooling rates; diffusion; experimental studies; Fe-56/Fe-54; Fe-57/Fe-54; grain boundaries; grain size; iron; iron meteorites; isotope fractionation; isotope ratios; isotopes; kamacite; metals; meteorites; nickel; nuclear resonant ineastic X-ray scattering; numerical models; partitioning; spectra; stable isotopes; sulfides; taenite; temperature; thermal history; troilite; X-ray spectra ER - TY - JOUR T1 - Soils and cryostratigraphy of ice wedge polygons in Arctic Alaska AN - 1629947793; 2014-096760 JF - Abstracts - European Conference on Permafrost AU - Ping, Chien-Lu AU - Jastrow, Julie AU - Jorgenson, Mark Torre AU - Matamala, Roser AU - Michaelson, Gary AU - Shur, Yuri Y1 - 2014 PY - 2014 DA - 2014 SP - 228 PB - [varies], [varies] VL - 4 KW - United States KW - soils KW - permafrost KW - clastic sediments KW - silt KW - periglacial features KW - ice wedges KW - depth KW - cores KW - climate change KW - organic compounds KW - cryoturbation KW - sediments KW - Alaska KW - horizons KW - active layer KW - cryostratigraphy KW - 25:Soils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629947793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+-+European+Conference+on+Permafrost&rft.atitle=Soils+and+cryostratigraphy+of+ice+wedge+polygons+in+Arctic+Alaska&rft.au=Ping%2C+Chien-Lu%3BJastrow%2C+Julie%3BJorgenson%2C+Mark+Torre%3BMatamala%2C+Roser%3BMichaelson%2C+Gary%3BShur%2C+Yuri&rft.aulast=Ping&rft.aufirst=Chien-Lu&rft.date=2014-01-01&rft.volume=4&rft.issue=&rft.spage=228&rft.isbn=&rft.btitle=&rft.title=Abstracts+-+European+Conference+on+Permafrost&rft.issn=&rft_id=info:doi/ L2 - https://dl.dropboxusercontent.com/u/4653594/EUCOP4/2%20EUCOP4%20Book%20of%20Abstracts.pdf LA - English DB - GeoRef N1 - Conference title - Fourth European conference on Permafrost N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Last updated - 2014-12-04 N1 - CODEN - #07345 N1 - SubjectsTermNotLitGenreText - active layer; Alaska; clastic sediments; climate change; cores; cryostratigraphy; cryoturbation; depth; horizons; ice wedges; organic compounds; periglacial features; permafrost; sediments; silt; soils; United States ER - TY - JOUR T1 - Synchrotron Radiation Study on Steam Oxidation Behavior of Zircaloy-2 with Advanced Coatings AN - 1567086790; 20432580 AB - Light water nuclear reactor cladding failure during normal operation and off-normal events has been studied for decades since the commercial use of nuclear reactors [1, 2], As the first engineering barrier for fission product release, the integrity of cladding determines the severity of the events. The development of advanced cladding to attain better oxidation resistance is therefore critical in order to essentially improve the safety margin of reactors. One of the potential methods is to develop adherent oxidation-resistant coatings for zirconium alloys. [3] In this study, atomic layer deposition (ALD) has been used to coat the Zircaloy-2 with Al sub(2)O sub(3). The coated materials were aged in air at the temperature up to 600[degrees]C, and then measured with high-energy synchrotron X-rays. JF - Transactions of the American Nuclear Society AU - Mo, Kun AU - Yun, Di AU - Mohamed, Walid AU - Pellin, Michael AU - Almer, Jonathan AU - Yacout, Abdellatif M AD - Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL, 60439 Y1 - 2014 PY - 2014 DA - 2014 SP - 842 EP - 844 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); Corrosion Abstracts (CO); CSA / ASCE Civil Engineering Abstracts (CE); Aluminium Industry Abstracts (AI) KW - Zirconium base alloys KW - Zircaloy-2 KW - Coating KW - Nuclear reactors KW - Cladding KW - Failure KW - Nuclear reactor components KW - Oxidation resistance KW - Coatings UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567086790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Synchrotron+Radiation+Study+on+Steam+Oxidation+Behavior+of+Zircaloy-2+with+Advanced+Coatings&rft.au=Mo%2C+Kun%3BYun%2C+Di%3BMohamed%2C+Walid%3BPellin%2C+Michael%3BAlmer%2C+Jonathan%3BYacout%2C+Abdellatif+M&rft.aulast=Mo&rft.aufirst=Kun&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=842&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Characterization of High Energy Xe Ion Damage in U-10Mo Metallic Alloy Fuel with Depth Resolved Synchrotron Microbeam Diffraction AN - 1567085827; 20432560 AB - U-Mo metallic alloys have been extensively used for the Reduced Enrichment Research and Test Reactors (RERTR) program [1-5]. Inside the reactor, the fuel experiences neutron damage as well as fission fragment damage. The fission fragment damage contributes much more significantly than the neutron damage to the displacement per atom (dpa) received by the material. In this work, we applied fission fragment energy Xe ion irradiation on U-lOMo (10 wt.%) to simulate the fission gas fragment damage to this metallic alloy fuel. We then utilized microbeam diffraction technique to characterize the irradiation damage. Depth resolved Q space information was obtained during the experiment from which lattice strain, Q peak width were derived. JF - Transactions of the American Nuclear Society AU - Yun, D AU - Mo, K AU - Xu, R AU - Mohamed, W AU - Ye, B AU - Pellin, M J AU - Yacout, A M AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 diyun@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 783 EP - 785 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear power generation KW - Damage KW - Nuclear reactors KW - Fuels KW - Nuclear reactor components KW - Diffraction KW - Fragmentation KW - Fission UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567085827?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Characterization+of+High+Energy+Xe+Ion+Damage+in+U-10Mo+Metallic+Alloy+Fuel+with+Depth+Resolved+Synchrotron+Microbeam+Diffraction&rft.au=Yun%2C+D%3BMo%2C+K%3BXu%2C+R%3BMohamed%2C+W%3BYe%2C+B%3BPellin%2C+M+J%3BYacout%2C+A+M&rft.aulast=Yun&rft.aufirst=D&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=783&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Simulation of Swelling and Stress State in Neutron Irradiated U-10Mo Monolithic Plate AN - 1567084538; 20432602 AB - A better understanding of the irradiation behavior of U-Mo metallic alloys as fuel material for the US Reduced Enrichment for Research and Test Reactors (RERTR) has become inevitable [1]. A large number of irradiation experiments of U-Mo alloys plates, both in dispersion and monolithic form, were conducted up-to-date accompanied by intensive Post Irradiation Examination (PIE) activities. However, experimental characterization of failed plates is not sufficient to provide a clear understanding of the potential failure mechanism and scenario. Accordingly, simulation and modeling techniques ranging from the molecular level and up to the continuum scale are thought to be utilized in this regard. Finite Element Method (FEM) is proposed and utilized by the researchers to investigate the irradiation behavior of U-Mo alloys. In this study, the FEM was utilized to investigate the observed failure of U-10Mo (10 wt. %) monolithic plate (L1P754) post 89.7 days of neutron irradiation at the Advanced Test Reactor (ATR) as shown in Fig. 1. JF - Transactions of the American Nuclear Society AU - Mohamed, Walid AU - Kim, Y S AU - Hofman, G L AU - Yacout, A M AD - Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 wmohamed@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 903 EP - 905 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Uranium base alloys KW - U-10Mo KW - Finite element method KW - Mathematical models KW - Computer simulation KW - Irradiation KW - Neutron irradiation KW - Failure KW - Alloys KW - Nuclear reactor components UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567084538?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Simulation+of+Swelling+and+Stress+State+in+Neutron+Irradiated+U-10Mo+Monolithic+Plate&rft.au=Mohamed%2C+Walid%3BKim%2C+Y+S%3BHofman%2C+G+L%3BYacout%2C+A+M&rft.aulast=Mohamed&rft.aufirst=Walid&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=903&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Thermodynamic Stability of ZrN as Diffusion Barriers for UMo/Al Fuel AN - 1567078926; 20432578 AB - Uranium-Molybdenum alloy is the most promising fuel for high performance research and test reactors.[1, 2] Low enriched uranium alloys with 6-10 wt% Mo content are under consideration by the Global Threat Reduction Initiative program as very high density fuels that allow nuclear research and test reactors conversion from use of highly-enriched uranium to low-enriched uranium fuels. However, when used in dispersion with Aluminum significant amount of interaction products form at the interface between the UMo and the surrounding Al during in-pile irradiation that leads to non-acceptable swelling.[3] Recent studies show that Al matrix alloyed with certain amount of Si improves the performance of UMo/Al dispersion fuel by reducing the UMo/Al interaction.[4] It is suggested that a silicon rich layer formed at the interface between UMo and Al prevents the conventional UMo/Al interdiffusion during irradiation. Using a similar idea, the application of a diffusion barrier by coating UMo particles might be more efficient in retarding the interdiffusion. Initial heavy ion irradiation results by Jungwirth et al.[2] suggest that Si coating do provide a good protection of UMo fuel by reducing interdiffusion between UMo and Al. Nitride coatings have been widely used to protect surfaces from corrosion, wear and diffusion against Al. Recently, ZrN has been proposed as diffusion barrier for UMo/Al fuel. However, experiments reveal that ZrN layer frequently cracks during plate fabrication.[2] This issue poses the concern about the thermodynamic and mechanical stability of the coating with respect to heat treatment and irradiation. JF - Transactions of the American Nuclear Society AU - Mei, Zhi-Gang AU - Yacout, Abdellatif M AU - Kim, Yeon Soo AU - Hofman, Gerard L AU - Stan, Marius AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 zmei@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 837 EP - 839 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); Corrosion Abstracts (CO); CSA / ASCE Civil Engineering Abstracts (CE); Aluminium Industry Abstracts (AI) KW - Uranium base alloys KW - U-Mo KW - Silicon KW - Coating KW - Irradiation KW - Fuels KW - Nuclear fuels KW - Aluminum KW - Interdiffusion KW - Diffusion barriers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567078926?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Thermodynamic+Stability+of+ZrN+as+Diffusion+Barriers+for+UMo%2FAl+Fuel&rft.au=Mei%2C+Zhi-Gang%3BYacout%2C+Abdellatif+M%3BKim%2C+Yeon+Soo%3BHofman%2C+Gerard+L%3BStan%2C+Marius&rft.aulast=Mei&rft.aufirst=Zhi-Gang&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=837&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Molecular Dynamics Study of Thermal Conductivity in Defective Uranium Dioxide AN - 1567063121; 20432591 AB - Uranium dioxide (UO sub(2)) is the most widely used nuclear fuel in the current commercial nuclear plants. The advantages of oxide fuels include the high melting point and the stable fluorite structure under high dose irradiation. However, a major drawback of UO sub(2) fuel is its relatively low thermal conductivity compared to metallic fuels. The thermal conductivity of a nuclear fuel is one of the most important properties as it influences the fuel operating temperature, in turn affecting directly fuel performance and behavior, particularly with respect to fission-gas release and swelling. Due to its importance for fuel performance studies, the thermal conductivity of UO sub(2) has been widely studied experimentally and theoretically.[1, 2] It is generally agreed that thermal conductivity of fresh fuels are determined by the composition, stoichiometry and microstmcture (grain size, porosity, etc.). JF - Transactions of the American Nuclear Society AU - Mei, Zhi-Gang AU - Stan, Marius AU - Yacout, Abdellatif M AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 zmei@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 874 EP - 876 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); Computer and Information Systems Abstracts (CI); CSA / ASCE Civil Engineering Abstracts (CE) KW - Thermal conductivity KW - Grain size KW - Fuels KW - Operating temperature KW - Nuclear fuels KW - Uranium dioxide KW - Swelling KW - Heat transfer UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567063121?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Molecular+Dynamics+Study+of+Thermal+Conductivity+in+Defective+Uranium+Dioxide&rft.au=Mei%2C+Zhi-Gang%3BStan%2C+Marius%3BYacout%2C+Abdellatif+M&rft.aulast=Mei&rft.aufirst=Zhi-Gang&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=874&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Characterization of High Energy Xe Ion Irradiation Effects in Single Crystal Molybdenum with Depth Resolved Synchrotron Microbeam Diffraction AN - 1567062901; 20432593 AB - Heavy ion irradiation has long been used as an alternative to neutron irradiation to study irradiation effects in nuclear materials [1]. Fission fragment induced irradiation damage is of great interest to nuclear fuel behaviors as it contributes to the majority of the damage done in the fuel materials. The formation and growth of fission gas bubbles in nuclear fuel materials and its implications are also of significant technical importance. The fuel swelling is strongly dependent on the evolution of fission gas bubble size and population. JF - Transactions of the American Nuclear Society AU - Yun, D AU - Mo, K AU - Xu, R AU - Mohamed, W AU - Ye, B AU - Pellin, M J AU - Yacout, A M AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 diyun@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 880 EP - 882 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear fission KW - Energy (nuclear) KW - Fuels KW - Nuclear fuels KW - Molybdenum KW - Neutron irradiation KW - Ion irradiation KW - Bubbles UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567062901?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Characterization+of+High+Energy+Xe+Ion+Irradiation+Effects+in+Single+Crystal+Molybdenum+with+Depth+Resolved+Synchrotron+Microbeam+Diffraction&rft.au=Yun%2C+D%3BMo%2C+K%3BXu%2C+R%3BMohamed%2C+W%3BYe%2C+B%3BPellin%2C+M+J%3BYacout%2C+A+M&rft.aulast=Yun&rft.aufirst=D&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=880&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Review of the IFR Physics Analysis Database AN - 1567062690; 20432513 AB - The Physics Analysis DataBase (PADB) [1] was created in 1994 to support the neutronic simulation of the Integral Fast Reactor (IFR) fuel cycle. It essentially contains all the data required to simulate the UZr/UPuZr fuel flow into the EBR-II, the fuel irradiation during the reactor operation, and the fuel flow out of the EBR-II. The PADB contains both measured and calculated data, which along with post-irradiation fuel measurements, can be extremely useful for neutronics code validation purposes. Information from the PADB such as the measured compositions of fresh fuel elements (pins), fuel and structural geometries, operating history, and core loading patterns were used to produce the PADB's calculated compositions of discharged fuel elements using the physics codes REBUS-3[2], RCT[3], and ORIGEN-RA, a modified version of ORIGEN[4]. The PADB's calculated compositions agreed well with the post-irradiation measurements of the EBR-II fuels. In this paper, the structure of the PADB and the utilization of its data files are briefly described along with the sample results from its application. JF - Transactions of the American Nuclear Society AU - Fei, T AU - Feng, B AU - Kim, T K AD - Argonne National Laboratory, 9700 South Cass Ave., Building 208, Argonne, IL 60439 tfei@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 603 EP - 604 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Fuel flow KW - Databases KW - Fuels KW - Simulation KW - Nuclear reactor components KW - Fuel elements KW - Nuclear engineering KW - Mathematical analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567062690?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Review+of+the+IFR+Physics+Analysis+Database&rft.au=Fei%2C+T%3BFeng%2C+B%3BKim%2C+T+K&rft.aulast=Fei&rft.aufirst=T&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=603&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Mechanistic Modeling of Metallic Fuel/Cladding Metallurgical Interactions AN - 1567062430; 20432550 AB - Uranium-plutonium-zirconium type metallic fuel is a promising candidate for sodium fast reactors. The high fissile density, inherent safety characteristics, compatibility with sodium, and ease of fabrication have been the primary thrust for the technology development. Furthermore, the fuel operates at temperatures where it is rather compliant compared to ceramic fuel types. As a consequence, fuel clad mechanical interaction between porous fuel and cladding becomes a far less concern compared to the ceramic fuel types. However, one of the constraints limiting metallic fuel performance is its chemical interaction with steel cladding. During normal operation, migration of lanthanides towards the inner surface of the cladding leads to the formation of a brittle layer in this region [1]. In addition, diffusion of iron and formation of low melting temperature phases at the fuel surface may lead to eutectic formation during transients, and the eutectic can penetrate towards the cladding via iron dissolution [2]. JF - Transactions of the American Nuclear Society AU - Karahan, Aydin AD - Argonne National Laboratory, Nuclear Engineering Division, 9700 S. Cass Avenue, Lemont, IL, 60439 akarahan@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 747 EP - 750 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Ceramic Abstracts/World Ceramics Abstracts (WC); Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Steels KW - Sodium KW - Ceramics KW - Formations KW - Eutectic temperature KW - Cladding KW - Fuels KW - Density UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567062430?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Mechanistic+Modeling+of+Metallic+Fuel%2FCladding+Metallurgical+Interactions&rft.au=Karahan%2C+Aydin&rft.aulast=Karahan&rft.aufirst=Aydin&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=747&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Simulation of U-Mo Fuel Swelling to High Burnup AN - 1567060992; 20432603 AB - U-Mo alloy (with 7-10 wt.% Mo) is the most promising fuel material for the conversion of research and test reactors from highly enriched uranium to low-enriched uranium ( super(235)U enrichment < 20%) [1]. Dispersion U-Mo fuel is being developed as a fuel with a lower enrichment and a high uranium density, in which U-Mo alloy particles are dispersed in A1 matrix to form fueled zone and the mixture is enclosed with an A1 cladding. JF - Transactions of the American Nuclear Society AU - Ye, Bei AU - Kim, Yeon Soo AU - Hofman, Gerard AU - Rest, Jeff AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, USA bye@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 906 EP - 908 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Dispersions KW - Alloy development KW - Uranium KW - Density KW - Nuclear fuels KW - Swelling KW - Enrichment KW - Nuclear engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567060992?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Simulation+of+U-Mo+Fuel+Swelling+to+High+Burnup&rft.au=Ye%2C+Bei%3BKim%2C+Yeon+Soo%3BHofman%2C+Gerard%3BRest%2C+Jeff&rft.aulast=Ye&rft.aufirst=Bei&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=906&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Thermophysical Properties of Uranium Dioxide by First-Principles AN - 1567056591; 20432549 AB - Uranium dioxide (UO sub(2)) is the most widely used fuel for the commercial nuclear power plants due to its high melting temperature and stable fluorite structure under high dose irradiation. In addition to its technological importance, UO sub(2) is of great scientific interest as a strongly correlated system. The effect of 5[functionof] electrons on the bonding and lattice vibration in actinide oxides has attracted considerable attentions. To understand the behavior of nuclear fuels in reactors and evaluate the fuel performance during the fuel cycle, it is very important to investigate the fundamental thermophysical properties, such as heat capacity, thermal expansion, and thermal conductivity.[1-4] During the past decades UO sub(2) has been extensively studied using different experimental techniques.[5-8] Due to the radioactive nature of nuclear fuels and the high cost for related experiment, computer modeling and simulations have become a critical role in the research of nuclear fuels. With the development of density-functional theory (DFT) methods, it has become possible to calculate the static structural energy for any material in any given structure. However, standard DFT calculations are not very successful in describing actinides. For example, standard DFT calculations using local density approximation (LDA) or generalized gradient approximation (GGA) predict a ferromagnetic (FM) structure as the ground state of UO sub(2) instead of the experimentally observed antiferromagnetic (AFM) phase.[9] To overcome the limitation, several more advanced DFT techniques have been proposed to better treat the correlated 5[functionof] electrons. Among these new methods DFT+U approach is one of the most popular approaches for studying actinide compounds due to its computational efficiency. JF - Transactions of the American Nuclear Society AU - Mei, Zhi-Gang AU - Stan, Marius AU - Yacout, Abdellatif M AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439 zmei@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 743 EP - 746 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Thermophysical properties KW - Nuclear power generation KW - Mathematical models KW - Density KW - Nuclear fuels KW - Correlation KW - Approximation KW - Actinides UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567056591?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Thermophysical+Properties+of+Uranium+Dioxide+by+First-Principles&rft.au=Mei%2C+Zhi-Gang%3BStan%2C+Marius%3BYacout%2C+Abdellatif+M&rft.aulast=Mei&rft.aufirst=Zhi-Gang&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=743&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - A Brief History of Radiation Detectors for Homeland Security Applications AN - 1567056149; 20432475 AB - With the discovery of x-rays by Wilhelm Roentgen in 1895, and subsequent discoveries of other types of radiation (Henri Becquerel, natural radioactivity and beta-rays, 1896, Ernest Rutherford, alpha particles, 1899, Paul Villard, gamma radiation, 1900, and James Chadwick, neutrons, 1932) came the initial development of radiation detectors. However, it was not until World War II that much was discovered about radioactive materials and man-made isotopes started to become available. These sources were much stronger than naturally occurring radioactive materials and it was first realized that their deliberate misuse posed a serious risk the general population. JF - Transactions of the American Nuclear Society AU - Klann, Raymond AD - Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 klan@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 454 EP - 458 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Alpha particles KW - Risk KW - X-rays KW - Isotopes KW - Natural radioactivity KW - Radioactive materials KW - Radiation detectors KW - Homeland security UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567056149?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=A+Brief+History+of+Radiation+Detectors+for+Homeland+Security+Applications&rft.au=Klann%2C+Raymond&rft.aulast=Klann&rft.aufirst=Raymond&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=454&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Nanoparticles Loading Behavior before and after Matrix Necking: an In-situ Synchrotron Radiation Study in a 9Cr ODS Alloy AN - 1567055939; 20432637 AB - To meet the stringent requirements of the next-generation fission and future fusion reactors that feature elevated operation temperatures and high irradiation doses, materials development to attain the desired properties of high-temperature and high-irradiation resistance must be urgently pursued. [1] Among many metallic materials, oxide-dispersion-strengthened (ODS) alloys have emerged as some of the most promising candidates. [2] These alloys contain nanoscale particles (nanoparticles) that provide both high strength and high irradiation resistance. JF - Transactions of the American Nuclear Society AU - Mo, Kun AU - Miao, Yinbin AU - Zhou, Zhangjian AU - Yun, Di AU - Liu, Xiang AU - Almer, Jonathan AU - Stubbins, James F AD - Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Argonne National Laboratory, Argonne, IL 60439, USA Y1 - 2014 PY - 2014 DA - 2014 SP - 1009 EP - 1011 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Solid State and Superconductivity Abstracts (SO); Mechanical & Transportation Engineering Abstracts (MT); METADEX (MD); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE) KW - Nuclear fission KW - Irradiation KW - Synchrotron radiation KW - Dispersion hardening alloys KW - Alloys KW - Nanoparticles KW - Nanostructure KW - Elevated UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567055939?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Nanoparticles+Loading+Behavior+before+and+after+Matrix+Necking%3A+an+In-situ+Synchrotron+Radiation+Study+in+a+9Cr+ODS+Alloy&rft.au=Mo%2C+Kun%3BMiao%2C+Yinbin%3BZhou%2C+Zhangjian%3BYun%2C+Di%3BLiu%2C+Xiang%3BAlmer%2C+Jonathan%3BStubbins%2C+James+F&rft.aulast=Mo&rft.aufirst=Kun&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=1009&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Mass relocation by fission-induced creep in U-Mo/Al dispersion fuel meat AN - 1567055892; 20432571 AB - In U-Mo dispersion in Al, designated as U-Mo/Al, fuel meat mass relocation occurred away from the transverse end of the plate, where the fission density is the highest, to the transverse center region, and as a result a swollen region was formed at a location between the end and the center of the plate in the transverse direction. This phenomenon was attributed to fission-induced creep of the fuel meat under the stress that built up at the meat edge by fuel meat swelling. JF - Transactions of the American Nuclear Society AU - Kim, Yeon Soo AU - Jeong, G Y AU - Sohn, D-S AD - Argonne National Laboratory, 9700 S. Cass Ave, Argonne, IL 60439, USA yskim@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 817 EP - 818 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); Electronics and Communications Abstracts (EA); CSA / ASCE Civil Engineering Abstracts (CE); Aluminium Industry Abstracts (AI) KW - Meat KW - Dispersions KW - Creep (materials) KW - Relocation KW - Fuels KW - Density KW - Aluminum KW - Swelling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1567055892?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Mass+relocation+by+fission-induced+creep+in+U-Mo%2FAl+dispersion+fuel+meat&rft.au=Kim%2C+Yeon+Soo%3BJeong%2C+G+Y%3BSohn%2C+D-S&rft.aulast=Kim&rft.aufirst=Yeon&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=817&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-10-01 N1 - Last updated - 2014-10-03 ER - TY - JOUR T1 - Simulation of the impact of 3-D porosity distribution in metallic U-10Zr fuels AN - 1562673560; 20433004 AB - Evolution of porosity generated in metallic U-Zr fuel irradiated in fast spectrum reactors leads to changes in fuel properties and impacts important phenomena such as heat transport and constituent redistribution. The porosity is generated as a result of the accumulation of fission gases and is affected by the possible bond sodium infiltration into the fuel. Typically, the impact of porosity development on properties, such as thermal conductivity, is accounted for through empirical correlations that are dependent on porosity and infiltrated sodium fractions. Currently available simulation tools make it possible to take into account fuel 3-D porosity distributions, potentially eliminating the need for such correlations. This development allows for a more realistic representation of the porosity evolution in metallic fuel and creates a framework for truly mechanistic fuel development models. In this work, COMSOL multi-physics simulation platform is used to model 3-D porosity distributions and simulate heat transport in metallic U-10Zr fuel. Available experimental data regarding microstructural evolution of fuel that was irradiated in EBR-II and associated phase stability information are used to guide the simulation. The impact of changes in porosity characteristics on material properties is estimated and the results are compared with calculated temperature distributions. The simulations demonstrate the developed capability and importance of accounting for detailed porosity distribution features for accurate fuel performance evaluation. JF - Journal of Nuclear Materials AU - Yun, Di AU - Yacout, Abdellatif M AU - Stan, Marius AU - Bauer, Theodore H AU - Wright, Arthur E AD - Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL, 60439, United States, diyun@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 129 EP - 138 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 448 IS - 1-3 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Thermal conductivity KW - Fuels KW - Porosity KW - Temperature KW - Simulation KW - Sodium KW - Gases KW - Nuclear reactors KW - Nuclear fuels KW - Radioactive materials KW - Infiltration KW - Heat transport KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1562673560?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=Simulation+of+the+impact+of+3-D+porosity+distribution+in+metallic+U-10Zr+fuels&rft.au=Yun%2C+Di%3BYacout%2C+Abdellatif+M%3BStan%2C+Marius%3BBauer%2C+Theodore+H%3BWright%2C+Arthur+E&rft.aulast=Yun&rft.aufirst=Di&rft.date=2014-01-01&rft.volume=448&rft.issue=1-3&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2014.02.002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Number of references - 26 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Sodium; Nuclear reactors; Gases; Thermal conductivity; Fuels; Radioactive materials; Porosity; Nuclear fuels; Temperature; Infiltration; Simulation; Heat transport DO - http://dx.doi.org/10.1016/j.jnucmat.2014.02.002 ER - TY - JOUR T1 - Development of an Enhanced Mechanistic Model for Metallic Fuel Constituent Redistribution AN - 1562669110; 20432606 AB - Uranium-plutonium-zirconium type metallic fuel is a promising candidate for sodium fast reactors. The favorable behavior of the metallic fuels is an important component of the reactor safety evaluation. The micro-structure evaluation of the fuel and cladding during irradiation, including composition and phase changes, fission gas behavior and porosity development, coupled with thermo-mechanical and chemical behavior is the approach used to attain predictive models and reliable results. The current project aims at developing a coupled metallic fuel performance model to augment SAS4A code [1] safety analysis capabilities as described in Ref. [2] by introducing a more mechanistic approach to model constituent migration. JF - Transactions of the American Nuclear Society AU - Karahan, Aydin AD - Argonne National Laboratory, Nuclear Engineering Division, 9700 S. Cass Avenue, Lemont, IL, 60439, akarahan@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 916 EP - 918 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Health & Safety Science Abstracts KW - Sodium KW - Nuclear reactors KW - Fuels KW - Irradiation KW - Nuclear fuels KW - Safety KW - Porosity KW - Prediction models KW - Migration KW - H 8000:Radiation Safety/Electrical Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1562669110?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Development+of+an+Enhanced+Mechanistic+Model+for+Metallic+Fuel+Constituent+Redistribution&rft.au=Karahan%2C+Aydin&rft.aulast=Karahan&rft.aufirst=Aydin&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=916&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Sodium; Nuclear reactors; Irradiation; Fuels; Porosity; Safety; Nuclear fuels; Prediction models; Migration ER - TY - JOUR T1 - Development of Advanced In-Pin Metallic Fuel Performance Models for SAS4A AN - 1562668920; 20432605 AB - Metallic fuel is the primary candidate fuel type for sodium fast reactors in the USA [1]. The combination of high fissile density, inherent safety characteristics, compatibility with sodium, and ease of fabrication has been the motivation for the technology development. The demonstration of safety performance of metallic fueled fast reactors during normal operation, anticipated transients, design basis accidents, and severe accident scenarios is a key component. The available experimental data is limited and cannot cover the whole design spectrum. Therefore, development of predictive and mechanistic continuum level models is being pursued to support the reliable design of these systems. JF - Transactions of the American Nuclear Society AU - Karahan, Aydin AD - Argonne National Laboratory, Nuclear Engineering Division, 9700 S. Cass Avenue, Lemont, IL, 60439, akarahan@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 912 EP - 915 PB - American Nuclear Society, Inc. VL - 110 SN - 0003-018X, 0003-018X KW - Health & Safety Science Abstracts KW - Sodium KW - USA KW - Accidents KW - Nuclear reactors KW - Safety engineering KW - Fuels KW - Nuclear fuels KW - Safety KW - Technology KW - H 8000:Radiation Safety/Electrical Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1562668920?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ahealthsafetyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Nuclear+Society&rft.atitle=Development+of+Advanced+In-Pin+Metallic+Fuel+Performance+Models+for+SAS4A&rft.au=Karahan%2C+Aydin&rft.aulast=Karahan&rft.aufirst=Aydin&rft.date=2014-01-01&rft.volume=110&rft.issue=&rft.spage=912&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Nuclear+Society&rft.issn=0003018X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Sodium; Accidents; Nuclear reactors; Safety engineering; Fuels; Safety; Nuclear fuels; Technology; USA ER - TY - JOUR T1 - Scoping assessments of ATF impact on late-stage accident progression including molten core-concrete interaction AN - 1560102403; 20433048 AB - Simple scoping models that can be used to evaluate ATF performance under severe accident conditions have been developed. The methodology provides a fundamental technical basis (a.k.a. metric) based on the thermodynamic boundary for evaluating performance relative to that of traditional Zr-based claddings. The initial focus in this study was on UO sub(2) fuel with the advanced claddings 310 SS, D9, FeCrAl, and SiC. The evaluation considered only energy release with concurrent combustible gas production from fuel-cladding-coolant interactions and, separately, molten core-concrete interactions at high temperatures. Other important phenomenological effects that can influence the rate and extent of cladding decomposition (e.g., eutectic interactions, degradation of other core constituents) were not addressed. For the cladding types addressed, potential combustible gas production under both in-vessel and ex-vessel conditions was similar to that for Zr. However, exothermic energy release from cladding oxidation was substantially less for iron-based alloys (by at least a factor of 4), and modestly less (by ~20%) for SiC. Data on SiC-clad UO sub(2) fuel performance under severe accident conditions are sparse in the literature; thus, assumptions on the nature of the cladding decomposition process were made in order to perform this initial screening evaluation. Experimental data for this system under severe accident conditions is needed for a proper evaluation and comparison to iron-based claddings. JF - Journal of Nuclear Materials AU - Farmer, M T AU - Leibowitz, L AU - Terrani, K A AU - Robb, K R AD - Argonne National Laboratory, Argonne, IL 60439, United States, farmer@anl.gov Y1 - 2014 PY - 2014 DA - 2014 SP - 534 EP - 540 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 448 IS - 1-3 SN - 0022-3115, 0022-3115 KW - Environment Abstracts KW - Austenitic stainless steels KW - 310 KW - Accidents KW - Thermodynamics KW - Degradation KW - Fuels KW - Energy KW - High temperature KW - Nuclear fuels KW - Radioactive materials KW - Oxidation KW - Alloys KW - Decomposition KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560102403?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Nuclear+Materials&rft.atitle=Scoping+assessments+of+ATF+impact+on+late-stage+accident+progression+including+molten+core-concrete+interaction&rft.au=Farmer%2C+M+T%3BLeibowitz%2C+L%3BTerrani%2C+K+A%3BRobb%2C+K+R&rft.aulast=Farmer&rft.aufirst=M&rft.date=2014-01-01&rft.volume=448&rft.issue=1-3&rft.spage=534&rft.isbn=&rft.btitle=&rft.title=Journal+of+Nuclear+Materials&rft.issn=00223115&rft_id=info:doi/10.1016%2Fj.jnucmat.2013.12.022 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Number of references - 21 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Accidents; Degradation; Thermodynamics; High temperature; Energy; Fuels; Oxidation; Radioactive materials; Nuclear fuels; Alloys; Decomposition DO - http://dx.doi.org/10.1016/j.jnucmat.2013.12.022 ER - TY - JOUR T1 - Final reports of the Stardust ISPE; seven probable interstellar dust particles AN - 1549618489; 2014-060234 JF - Abstracts of Papers Submitted to the Lunar and Planetary Science Conference AU - Westphal, Andrew J AU - Stroud, Rhonda M AU - Bechtel, Hans A AU - Brenker, Frank E AU - Butterworth, Anna L AU - Flynn, George J AU - Frank, David R AU - Gainsforth, Zack AU - Hillier, Jon K AU - Postberg, Frank AU - Simionovici, Alexandre S AU - Sterken, Veerle J AU - Allen, Carlton C AU - Anderson, David AU - Ansari, Asna AU - Bajt, Sasa AU - Bastien, Ron K AU - Bassim, Nabil AU - Bridges, John AU - Brownlee, Donald E AU - Burchell, Mark AU - Burghammer, Manfred AU - Changela, Hitesh AU - Cloetens, Peter AU - Davis, Andrew M AU - Doll, Ryan AU - Floss, Christine AU - Gruen, Eberhard AU - Heck, Philipp R AU - Hoppe, Peter AU - Hudson, Bruce AU - Huth, Joachim AU - Kearsley, Anton AU - King, Ashley J AU - Lai, Barry AU - Leitner, Jan AU - Lemelle, Laurence AU - Leonard, Ariel AU - Leroux, Hugues AU - Lettieri, Robert AU - Marchant, William AU - Nittler, Larry R AU - Ogliore, Ryan C AU - Ong, Wei Jia AU - Price, Mark C AU - Sandford, Scott A AU - Tresseras, Juan-Angel Sans AU - Schmitz, Sylvia AU - Schoonjans, Tom AU - Schreiber, Kate AU - Silversmit, Geert AU - Sole, Vicente A AU - Srama, Ralf AU - Stadermann, Frank J AU - Stephan, Thomas AU - Stodolna, Julien AU - Sutton, Stephen AU - Trieloff, Mario AU - Tsou, Peter AU - Tyliszczak, Tolek AU - Vekemans, Bart AU - Vincze, Laszlo AU - Von Korff, Joshua AU - Wordsworth, Naomi AU - Zevin, Daniel AU - Zolensky, Michael E AU - Anonymous Y1 - 2014 PY - 2014 DA - 2014 EP - Abstract 2269 PB - Lunar and Planetary Science Conference, Houston, TX VL - 45 KW - particle tracks KW - oxygen KW - ion probe data KW - impact features KW - density KW - X-ray diffraction data KW - isotopes KW - mass spectra KW - scanning transmission X-ray microscopy KW - stable isotopes KW - infrared spectra KW - automated analysis KW - XANES spectra KW - synchrotron radiation KW - FTIR spectra KW - Stardust Interstellar Preliminary Examination KW - X-ray fluorescence spectra KW - velocity KW - spectra KW - chemical composition KW - interstellar dust KW - Stardust Mission KW - X-ray spectra KW - size KW - EDS spectra KW - morphology KW - focused ion beam KW - sample preparation KW - cosmic dust KW - identification KW - O-17 KW - aerogel KW - NanoSIMS KW - impact craters KW - SEM data KW - particles KW - 04:Extraterrestrial geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1549618489?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.atitle=Final+reports+of+the+Stardust+ISPE%3B+seven+probable+interstellar+dust+particles&rft.au=Westphal%2C+Andrew+J%3BStroud%2C+Rhonda+M%3BBechtel%2C+Hans+A%3BBrenker%2C+Frank+E%3BButterworth%2C+Anna+L%3BFlynn%2C+George+J%3BFrank%2C+David+R%3BGainsforth%2C+Zack%3BHillier%2C+Jon+K%3BPostberg%2C+Frank%3BSimionovici%2C+Alexandre+S%3BSterken%2C+Veerle+J%3BAllen%2C+Carlton+C%3BAnderson%2C+David%3BAnsari%2C+Asna%3BBajt%2C+Sasa%3BBastien%2C+Ron+K%3BBassim%2C+Nabil%3BBridges%2C+John%3BBrownlee%2C+Donald+E%3BBurchell%2C+Mark%3BBurghammer%2C+Manfred%3BChangela%2C+Hitesh%3BCloetens%2C+Peter%3BDavis%2C+Andrew+M%3BDoll%2C+Ryan%3BFloss%2C+Christine%3BGruen%2C+Eberhard%3BHeck%2C+Philipp+R%3BHoppe%2C+Peter%3BHudson%2C+Bruce%3BHuth%2C+Joachim%3BKearsley%2C+Anton%3BKing%2C+Ashley+J%3BLai%2C+Barry%3BLeitner%2C+Jan%3BLemelle%2C+Laurence%3BLeonard%2C+Ariel%3BLeroux%2C+Hugues%3BLettieri%2C+Robert%3BMarchant%2C+William%3BNittler%2C+Larry+R%3BOgliore%2C+Ryan+C%3BOng%2C+Wei+Jia%3BPrice%2C+Mark+C%3BSandford%2C+Scott+A%3BTresseras%2C+Juan-Angel+Sans%3BSchmitz%2C+Sylvia%3BSchoonjans%2C+Tom%3BSchreiber%2C+Kate%3BSilversmit%2C+Geert%3BSole%2C+Vicente+A%3BSrama%2C+Ralf%3BStadermann%2C+Frank+J%3BStephan%2C+Thomas%3BStodolna%2C+Julien%3BSutton%2C+Stephen%3BTrieloff%2C+Mario%3BTsou%2C+Peter%3BTyliszczak%2C+Tolek%3BVekemans%2C+Bart%3BVincze%2C+Laszlo%3BVon+Korff%2C+Joshua%3BWordsworth%2C+Naomi%3BZevin%2C+Daniel%3BZolensky%2C+Michael+E%3BAnonymous&rft.aulast=Westphal&rft.aufirst=Andrew&rft.date=2014-01-01&rft.volume=45&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Abstracts+of+Papers+Submitted+to+the+Lunar+and+Planetary+Science+Conference&rft.issn=&rft_id=info:doi/ L2 - http://www.hou.usra.edu/meetings/lpsc2014/pdf/2269.pdf LA - English DB - GeoRef N1 - Conference title - 45th lunar and planetary science conference N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2014-01-01 N1 - Number of references - 13 N1 - PubXState - TX N1 - SuppNotes - Accessed on Apr. 30, 2014 N1 - Last updated - 2014-11-13 N1 - CODEN - #02179 N1 - SubjectsTermNotLitGenreText - aerogel; automated analysis; chemical composition; cosmic dust; density; EDS spectra; focused ion beam; FTIR spectra; identification; impact craters; impact features; infrared spectra; interstellar dust; ion probe data; isotopes; mass spectra; morphology; NanoSIMS; O-17; oxygen; particle tracks; particles; sample preparation; scanning transmission X-ray microscopy; SEM data; size; spectra; stable isotopes; Stardust Interstellar Preliminary Examination; Stardust Mission; synchrotron radiation; velocity; X-ray diffraction data; X-ray fluorescence spectra; X-ray spectra; XANES spectra ER - TY - JOUR T1 - Modeling the transmission of community-associated methicillin-resistant Staphylococcus aureus: a dynamic agent-based simulation AN - 1540237856; 20112926 AB - Background: Methicillin-resistant Staphylococcus aureus (MRSA) has been a deadly pathogen in healthcare settings since the 1960s, but MRSA epidemiology changed since 1990 with new genetically distinct strain types circulating among previously healthy people outside healthcare settings. Community-associated (CA) MRSA strains primarily cause skin and soft tissue infections, but may also cause life-threatening invasive infections. First seen in Australia and the U.S., it is a growing problem around the world. The U.S. has had the most widespread CA-MRSA epidemic, with strain type USA300 causing the great majority of infections. Individuals with either asymptomatic colonization or infection may transmit CA-MRSA to others, largely by skin-to-skin contact. Control measures have focused on hospital transmission. Limited public health education has focused on care for skin infections. Methods: We developed a fine-grained agent-based model for Chicago to identify where to target interventions to reduce CA-MRSA transmission. An agent-based model allows us to represent heterogeneity in population behavior, locations and contact patterns that are highly relevant for CA-MRSA transmission and control. Drawing on nationally representative survey data, the model represents variation in sociodemographics, locations, behaviors, and physical contact patterns. Transmission probabilities are based on a comprehensive literature review. Results: Over multiple 10-year runs with one-hour ticks, our model generates temporal and geographic trends in CA-MRSA incidence similar to Chicago from 2001 to 2010. On average, a majority of transmission events occurred in households, and colonized rather than infected agents were the source of the great majority (over 95%) of transmission events. The key findings are that infected people are not the primary source of spread. Rather, the far greater number of colonized individuals must be targeted to reduce transmission. Conclusions: Our findings suggest that current paradigms in MRSA control in the United States cannot be very effective in reducing the incidence of CA-MRSA infections. Furthermore, the control measures that have focused on hospitals are unlikely to have much population-wide impact on CA-MRSA rates. New strategies need to be developed, as the incidence of CA-MRSA is likely to continue to grow around the world. JF - Journal of Translational Medicine AU - Macal, Charles M AU - North, Michael J AU - Collier, Nicholson AU - Dukic, Vanja M AU - Wegener, Duane T AU - David, Michael Z AU - Daum, Robert S AU - Schumm, Philip AU - Evans, James A AU - Wilder, Jocelyn R AU - Miller, Loren G AU - Eells, Samantha J AU - Lauderdale, Diane S AD - Decision and Information Sciences Division, Argonne National Laboratory, 9700 S. Cass Ave., Bldg 221, Argonne, IL 60439, USA Y1 - 2014 PY - 2014 DA - 2014 SP - 124 PB - BioMed Central Ltd., Middlesex House London W1T 4LB United Kingdom VL - 12 IS - 1 SN - 1479-5876, 1479-5876 KW - Health & Safety Science Abstracts; Microbiology Abstracts B: Bacteriology KW - MRSA KW - Agent-based model KW - Infectious disease model KW - USA, Illinois, Chicago KW - Translation KW - Drug resistance KW - Intervention KW - Infection KW - Public health KW - Disease transmission KW - Models KW - Colonization KW - Australia KW - Staphylococcus aureus KW - Antibiotic resistance KW - Data processing KW - Skin KW - Epidemics KW - Ixodidae KW - Simulation KW - Pathogens KW - USA KW - Education KW - Health care KW - Literature reviews KW - Epidemiology KW - Households KW - Soft tissues KW - Hospitals KW - H 12000:Epidemiology and Public Health KW - J 02400:Human Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1540237856?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Translational+Medicine&rft.atitle=Modeling+the+transmission+of+community-associated+methicillin-resistant+Staphylococcus+aureus%3A+a+dynamic+agent-based+simulation&rft.au=Macal%2C+Charles+M%3BNorth%2C+Michael+J%3BCollier%2C+Nicholson%3BDukic%2C+Vanja+M%3BWegener%2C+Duane+T%3BDavid%2C+Michael+Z%3BDaum%2C+Robert+S%3BSchumm%2C+Philip%3BEvans%2C+James+A%3BWilder%2C+Jocelyn+R%3BMiller%2C+Loren+G%3BEells%2C+Samantha+J%3BLauderdale%2C+Diane+S&rft.aulast=Macal&rft.aufirst=Charles&rft.date=2014-01-01&rft.volume=12&rft.issue=1&rft.spage=124&rft.isbn=&rft.btitle=&rft.title=Journal+of+Translational+Medicine&rft.issn=14795876&rft_id=info:doi/10.1186%2F1479-5876-12-124 L2 - http://www.translational-medicine.com/content/12/1/124 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-06-01 N1 - Number of references - 40 N1 - Last updated - 2014-10-02 N1 - SubjectsTermNotLitGenreText - Translation; Epidemics; Skin; Data processing; Drug resistance; Pathogens; Infection; Models; Disease transmission; Public health; Colonization; Epidemiology; Literature reviews; Soft tissues; Hospitals; Intervention; Simulation; Education; Health care; Households; Antibiotic resistance; Ixodidae; Staphylococcus aureus; USA, Illinois, Chicago; USA; Australia DO - http://dx.doi.org/10.1186/1479-5876-12-124 ER - TY - JOUR T1 - Crystal structure of the open state of the Neisseria gonorrhoeae MtrE outer membrane channel. AN - 1534099456; 24901251 AB - Active efflux of antimicrobial agents is one of the most important strategies used by bacteria to defend against antimicrobial factors present in their environment. Mediating many cases of antibiotic resistance are transmembrane efflux pumps, composed of one or more proteins. The Neisseria gonorrhoeae MtrCDE tripartite multidrug efflux pump, belonging to the hydrophobic and amphiphilic efflux resistance-nodulation-cell division (HAE-RND) family, spans both the inner and outer membranes of N. gonorrhoeae and confers resistance to a variety of antibiotics and toxic compounds. We here describe the crystal structure of N. gonorrhoeae MtrE, the outer membrane component of the MtrCDE tripartite multidrug efflux system. This trimeric MtrE channel forms a vertical tunnel extending down contiguously from the outer membrane surface to the periplasmic end, indicating that our structure of MtrE depicts an open conformational state of this channel. JF - PloS one AU - Lei, Hsiang-Ting AU - Chou, Tsung-Han AU - Su, Chih-Chia AU - Bolla, Jani Reddy AU - Kumar, Nitin AU - Radhakrishnan, Abhijith AU - Long, Feng AU - Delmar, Jared A AU - Do, Sylvia V AU - Rajashankar, Kanagalaghatta R AU - Shafer, William M AU - Yu, Edward W AD - Department of Chemistry, Iowa State University, Ames, Iowa, United States of America. ; Department of Physics and Astronomy, Iowa State University, Ames, Iowa, United States of America. ; Bioinformatics and Computational Biology Interdepartmental Graduate Program, Iowa State University, Ames, Iowa, United States of America. ; NE-CAT and Department of Chemistry and Chemical Biology, Cornell University, Argonne National Laboratory, Argonne, Illinois, United States of America. ; Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America; Laboratories of Microbial Pathogenesis, VA Medical Center, Decatur, Georgia, United States of America. ; Department of Chemistry, Iowa State University, Ames, Iowa, United States of America; Department of Physics and Astronomy, Iowa State University, Ames, Iowa, United States of America; Bioinformatics and Computational Biology Interdepartmental Graduate Program, Iowa State University, Ames, Iowa, United States of America. Y1 - 2014 PY - 2014 DA - 2014 SP - 1 VL - 9 IS - 6 KW - Bacterial Outer Membrane Proteins KW - 0 KW - MtrE protein, Neisseria gonorrhoeae KW - Index Medicus KW - Humans KW - Neisseria gonorrhoeae -- metabolism KW - Models, Molecular KW - Bacterial Outer Membrane Proteins -- metabolism KW - Bacterial Outer Membrane Proteins -- chemistry KW - Protein Conformation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1534099456?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=PloS+one&rft.atitle=Crystal+structure+of+the+open+state+of+the+Neisseria+gonorrhoeae+MtrE+outer+membrane+channel.&rft.au=Lei%2C+Hsiang-Ting%3BChou%2C+Tsung-Han%3BSu%2C+Chih-Chia%3BBolla%2C+Jani+Reddy%3BKumar%2C+Nitin%3BRadhakrishnan%2C+Abhijith%3BLong%2C+Feng%3BDelmar%2C+Jared+A%3BDo%2C+Sylvia+V%3BRajashankar%2C+Kanagalaghatta+R%3BShafer%2C+William+M%3BYu%2C+Edward+W&rft.aulast=Lei&rft.aufirst=Hsiang-Ting&rft.date=2014-01-01&rft.volume=9&rft.issue=6&rft.spage=e97475&rft.isbn=&rft.btitle=&rft.title=PloS+one&rft.issn=1932-6203&rft_id=info:doi/10.1371%2Fjournal.pone.0097475 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-08-05 N1 - Date created - 2014-06-06 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: J Mol Biol. 2009 Oct 23;393(2):342-55 [19695261] Nature. 2010 Sep 23;467(7314):484-8 [20865003] PLoS One. 2011;6(1):e15610 [21249122] Proc Natl Acad Sci U S A. 2011 Feb 1;108(5):2112-7 [21245342] J Biol Chem. 2011 Feb 18;286(7):5484-93 [21115481] Nature. 2011 Feb 24;470(7335):558-62 [21350490] J Mol Biol. 2012 Sep 21;422(3):429-41 [22683351] Mol Microbiol. 2013 May;88(3):590-602 [23565750] J Mol Microbiol Biotechnol. 1999 Aug;1(1):107-25 [10941792] Nature. 2000 Jun 22;405(6789):914-9 [10879525] J Mol Biol. 2014 Jan 23;426(2):403-11 [24099674] Microbiology. 2001 Apr;147(Pt 4):965-72 [11283292] J Mol Microbiol Biotechnol. 2001 Apr;3(2):219-24 [11321577] Mol Microbiol. 2002 Jun;44(5):1131-9 [12068802] Nature. 2002 Oct 10;419(6907):587-93 [12374972] Acta Crystallogr D Biol Crystallogr. 2002 Nov;58(Pt 11):1948-54 [12393927] J Bacteriol. 2003 Feb;185(3):1101-6 [12533487] Science. 2003 May 9;300(5621):976-80 [12738864] J Bacteriol. 2003 Jul;185(13):3804-12 [12813074] J Biol Chem. 2004 Jun 18;279(25):25939-42 [15117957] Proc Natl Acad Sci U S A. 2004 Jul 6;101(27):9994-9 [15226509] J Infect Dis. 1973 Sep;128(3):321-30 [4269625] Microbiology. 1995 Mar;141 ( Pt 3):611-22 [7711899] Mol Microbiol. 1995 Jun;16(5):1001-9 [7476176] Microbiology. 1997 Jul;143 ( Pt 7):2117-25 [9245801] Microbiology. 1997 Jul;143 ( Pt 7):2127-33 [9245802] Proc Natl Acad Sci U S A. 1998 Feb 17;95(4):1829-33 [9465102] Microbiology. 1998 Mar;144 ( Pt 3):621-7 [9534233] Acta Crystallogr D Biol Crystallogr. 1998 Sep 1;54(Pt 5):905-21 [9757107] Mol Microbiol. 1999 Aug;33(4):839-45 [10447892] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] J Biol Chem. 2004 Dec 17;279(51):52816-9 [15507433] J Biol Chem. 2005 Apr 15;280(15):15307-14 [15684414] J Bacteriol. 2005 Oct;187(19):6804-15 [16166543] Structure. 2006 Mar;14(3):577-87 [16531241] Science. 2006 Sep 1;313(5791):1295-8 [16946072] Nature. 2006 Sep 14;443(7108):173-9 [16915237] Expert Rev Anti Infect Ther. 2006 Aug;4(4):619-28 [17009941] PLoS Biol. 2007 Jan;5(1):e7 [17194213] Mol Cell. 2008 Apr 11;30(1):114-21 [18406332] Mol Microbiol. 2008 Oct;70(2):462-78 [18761689] Proc Natl Acad Sci U S A. 2009 Apr 28;106(17):7173-8 [19342493] J Mol Biol. 2009 May 29;389(1):134-45 [19361527] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1371/journal.pone.0097475 ER - TY - JOUR T1 - Crystal structure of the Neisseria gonorrhoeae MtrD inner membrane multidrug efflux pump. AN - 1534097971; 24901477 AB - Neisseria gonorrhoeae is an obligate human pathogen and the causative agent of the sexually-transmitted disease gonorrhea. The control of this disease has been compromised by the increasing proportion of infections due to antibiotic-resistant strains, which are growing at an alarming rate. The MtrCDE tripartite multidrug efflux pump, belonging to the hydrophobic and amphiphilic efflux resistance-nodulation-cell division (HAE-RND) family, spans both the inner and outer membranes of N. gonorrhoeae and confers resistance to a variety of antibiotics and toxic compounds. We here report the crystal structure of the inner membrane MtrD multidrug efflux pump, which reveals a novel structural feature that is not found in other RND efflux pumps. JF - PloS one AU - Bolla, Jani Reddy AU - Su, Chih-Chia AU - Do, Sylvia V AU - Radhakrishnan, Abhijith AU - Kumar, Nitin AU - Long, Feng AU - Chou, Tsung-Han AU - Delmar, Jared A AU - Lei, Hsiang-Ting AU - Rajashankar, Kanagalaghatta R AU - Shafer, William M AU - Yu, Edward W AD - Department of Chemistry, Iowa State University, Ames, Iowa, United States of America. ; Department of Physics and Astronomy, Iowa State University, Ames, Iowa, United States of America. ; Bioinformatics and Computational Biology Interdepartmental Graduate Program, Iowa State University, Ames, Iowa, United States of America. ; NE-CAT and Department of Chemistry and Chemical Biology, Cornell University, Argonne National Laboratory, Argonne, Illinois, United States of America. ; Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America; Laboratories of Microbial Pathogenesis, VA Medical Center, Decatur, Georgia, United States of America. ; Department of Chemistry, Iowa State University, Ames, Iowa, United States of America; Department of Physics and Astronomy, Iowa State University, Ames, Iowa, United States of America; Bioinformatics and Computational Biology Interdepartmental Graduate Program, Iowa State University, Ames, Iowa, United States of America. Y1 - 2014 PY - 2014 DA - 2014 SP - 1 VL - 9 IS - 6 KW - Bacterial Proteins KW - 0 KW - Membrane Proteins KW - Membrane Transport Proteins KW - MtrD protein, Neisseria gonorrhoeae KW - Index Medicus KW - Sequence Alignment KW - Molecular Sequence Data KW - Crystallography, X-Ray KW - Amino Acid Sequence KW - Protein Binding KW - Binding Sites KW - Neisseria gonorrhoeae -- metabolism KW - Bacterial Proteins -- chemistry KW - Models, Molecular KW - Membrane Proteins -- chemistry KW - Membrane Transport Proteins -- chemistry KW - Protein Conformation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1534097971?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=PloS+one&rft.atitle=Crystal+structure+of+the+Neisseria+gonorrhoeae+MtrD+inner+membrane+multidrug+efflux+pump.&rft.au=Bolla%2C+Jani+Reddy%3BSu%2C+Chih-Chia%3BDo%2C+Sylvia+V%3BRadhakrishnan%2C+Abhijith%3BKumar%2C+Nitin%3BLong%2C+Feng%3BChou%2C+Tsung-Han%3BDelmar%2C+Jared+A%3BLei%2C+Hsiang-Ting%3BRajashankar%2C+Kanagalaghatta+R%3BShafer%2C+William+M%3BYu%2C+Edward+W&rft.aulast=Bolla&rft.aufirst=Jani&rft.date=2014-01-01&rft.volume=9&rft.issue=6&rft.spage=e97903&rft.isbn=&rft.btitle=&rft.title=PloS+one&rft.issn=1932-6203&rft_id=info:doi/10.1371%2Fjournal.pone.0097903 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-08-05 N1 - Date created - 2014-06-06 N1 - Date revised - 2017-02-17 N1 - Genetic sequence - 4MT1; PDB N1 - SuppNotes - Cited By: Infect Immun. 2003 Oct;71(10):5576-82 [14500476] Nature. 2011 Feb 24;470(7335):558-62 [21350490] Proc Natl Acad Sci U S A. 2012 Apr 10;109(15):5687-92 [22451937] J Mol Biol. 2012 Sep 21;422(3):429-41 [22683351] Mol Microbiol. 2013 May;88(3):590-602 [23565750] Nature. 2013 Aug 1;500(7460):102-6 [23812586] J Mol Biol. 2014 Jan 23;426(2):403-11 [24099674] Nature. 2011 Dec 22;480(7378):565-9 [22121023] PLoS One. 2011;6(1):e15610 [21249122] Nature. 2010 Sep 23;467(7314):484-8 [20865003] J Biol Chem. 2004 Jun 18;279(25):25939-42 [15117957] Proc Natl Acad Sci U S A. 2004 Jul 6;101(27):9994-9 [15226509] Cell. 1986 Oct 10;47(1):61-71 [3093085] Mol Microbiol. 1995 Jun;16(5):1001-9 [7476176] Microbiology. 1997 Jul;143 ( Pt 7):2117-25 [9245801] Proc Natl Acad Sci U S A. 1998 Feb 17;95(4):1829-33 [9465102] Acta Crystallogr D Biol Crystallogr. 1998 Sep 1;54(Pt 5):905-21 [9757107] Acta Crystallogr D Biol Crystallogr. 2004 Dec;60(Pt 12 Pt 1):2126-32 [15572765] J Biol Chem. 2004 Dec 17;279(51):52816-9 [15507433] J Bacteriol. 2005 Oct;187(19):6804-15 [16166543] Structure. 2006 Mar;14(3):577-87 [16531241] Clin Microbiol Rev. 2006 Apr;19(2):382-402 [16614254] Science. 2006 Sep 1;313(5791):1295-8 [16946072] Nature. 2006 Sep 14;443(7108):173-9 [16915237] Expert Rev Anti Infect Ther. 2006 Aug;4(4):619-28 [17009941] Nature. 2000 Jun 22;405(6789):914-9 [10879525] J Mol Microbiol Biotechnol. 1999 Aug;1(1):107-25 [10941792] Microbiology. 2001 Apr;147(Pt 4):965-72 [11283292] Nature. 2002 Oct 10;419(6907):587-93 [12374972] Acta Crystallogr D Biol Crystallogr. 2002 Nov;58(Pt 11):1948-54 [12393927] Science. 2003 May 9;300(5621):976-80 [12738864] J Bacteriol. 2003 Jul;185(13):3804-12 [12813074] PLoS Biol. 2007 Jan;5(1):e7 [17194213] Mol Microbiol. 2008 Oct;70(2):462-78 [18761689] Proc Natl Acad Sci U S A. 2009 Apr 28;106(17):7173-8 [19342493] J Mol Biol. 2009 May 29;389(1):134-45 [19361527] J Mol Biol. 2009 Oct 23;393(2):342-55 [19695261] N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1371/journal.pone.0097903 ER - TY - JOUR T1 - High enriched to low enriched fuel conversion in YALINA Booster facility AN - 1516744708; 19437146 AB - The YALINA Booster zero power facility is a subcritical assembly located in Minsk (Belarus). This assembly has the special feature of operating on fast and thermal neutron spectra in different zones. The fast zone of the assembly uses a lead matrix and uranium fuels with different enrichments: 90% and 36%, 36%, or 21%. The thermal zone of the assembly contains 10% enriched uranium fuel in polyethylene matrix. This study discusses the high enriched to low enriched fuel conversion. In order to increase the neutron multiplication of the assembly loaded with low (21%) enriched fuel in the fast zone, the number of fuel rods in the thermal zone cannot be augmented. Consequently, the effective multiplication factor of the configuration with 21% enriched uranium fuel in the fast zone has been enhanced by changing the position of the boron carbide and the natural uranium absorber rods, located in-between the fast and the thermal zones, to form a circular rather than a square arrangement. The MCNP computer simulation results obtained with the circular arrangement of the absorber rods are in good agreement with the experimental data. JF - Progress in Nuclear Energy AU - Talamo, Alberto AU - Gohar, Yousry AU - Sadovich, S AU - Kiyavitskaya, H AU - Bournos, V AU - Fokov, Y AU - Routkovskaya, C AD - Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA, alby@anl.gov Y1 - 2014/01// PY - 2014 DA - January 2014 SP - 43 EP - 53 PB - Elsevier B.V., P.O. Box 800 Kidlington Oxford OX5 1DX United Kingdom VL - 70 SN - 0149-1970, 0149-1970 KW - Environment Abstracts KW - HEU KW - YALINA KW - Subcritical KW - Booster KW - ADS KW - MCNP KW - Belarus KW - Belarus, Minsk KW - Fuels KW - Uranium KW - Nuclear fuels KW - Simulation KW - Nuclear energy KW - Boron KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1516744708?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Progress+in+Nuclear+Energy&rft.atitle=High+enriched+to+low+enriched+fuel+conversion+in+YALINA+Booster+facility&rft.au=Talamo%2C+Alberto%3BGohar%2C+Yousry%3BSadovich%2C+S%3BKiyavitskaya%2C+H%3BBournos%2C+V%3BFokov%2C+Y%3BRoutkovskaya%2C+C&rft.aulast=Talamo&rft.aufirst=Alberto&rft.date=2014-01-01&rft.volume=70&rft.issue=&rft.spage=43&rft.isbn=&rft.btitle=&rft.title=Progress+in+Nuclear+Energy&rft.issn=01491970&rft_id=info:doi/10.1016%2Fj.pnucene.2013.07.010 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-04-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Uranium; Fuels; Nuclear fuels; Simulation; Nuclear energy; Boron; Belarus; Belarus, Minsk DO - http://dx.doi.org/10.1016/j.pnucene.2013.07.010 ER - TY - JOUR T1 - Stable U(IV) complexes form at high-affinity mineral surface sites. AN - 1499133044; 24404905 AB - Uranium (U) poses a significant contamination hazard to soils, sediments, and groundwater due to its extensive use for energy production. Despite advances in modeling the risks of this toxic and radioactive element, lack of information about the mechanisms controlling U transport hinders further improvements, particularly in reducing environments where U(IV) predominates. Here we establish that mineral surfaces can stabilize the majority of U as adsorbed U(IV) species following reduction of U(VI). Using X-ray absorption spectroscopy and electron imaging analysis, we find that at low surface loading, U(IV) forms inner-sphere complexes with two metal oxides, TiO2 (rutile) and Fe3O4 (magnetite) (at <1.3 U nm(-2) and <0.037 U nm(-2), respectively). The uraninite (UO2) form of U(IV) predominates only at higher surface loading. U(IV)-TiO2 complexes remain stable for at least 12 months, and U(IV)-Fe3O4 complexes remain stable for at least 4 months, under anoxic conditions. Adsorbed U(IV) results from U(VI) reduction by Fe(II) or by the reduced electron shuttle AH2QDS, suggesting that both abiotic and biotic reduction pathways can produce stable U(IV)-mineral complexes in the subsurface. The observed control of high-affinity mineral surface sites on U(IV) speciation helps explain the presence of nonuraninite U(IV) in sediments and has important implications for U transport modeling. JF - Environmental science & technology AU - Latta, Drew E AU - Mishra, Bhoopesh AU - Cook, Russell E AU - Kemner, Kenneth M AU - Boyanov, Maxim I AD - Biosciences Division, Argonne National Laboratory , Argonne, Illinois 60439, United States. Y1 - 2014 PY - 2014 DA - 2014 SP - 1683 EP - 1691 VL - 48 IS - 3 KW - Uranium Compounds KW - 0 KW - Water Pollutants, Radioactive KW - titanium dioxide KW - 15FIX9V2JP KW - Titanium KW - D1JT611TNE KW - uranium dioxide KW - L70487KUZO KW - Ferrosoferric Oxide KW - XM0M87F357 KW - Index Medicus KW - Oxidation-Reduction KW - Microscopy, Electron, Transmission KW - Ferrosoferric Oxide -- chemistry KW - X-Ray Absorption Spectroscopy KW - Titanium -- chemistry KW - Models, Molecular KW - Adsorption KW - Surface Properties KW - Groundwater -- chemistry KW - Geologic Sediments -- chemistry KW - Water Pollutants, Radioactive -- chemistry KW - Uranium Compounds -- analysis KW - Water Pollutants, Radioactive -- analysis KW - Uranium Compounds -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1499133044?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+science+%26+technology&rft.atitle=Stable+U%28IV%29+complexes+form+at+high-affinity+mineral+surface+sites.&rft.au=Latta%2C+Drew+E%3BMishra%2C+Bhoopesh%3BCook%2C+Russell+E%3BKemner%2C+Kenneth+M%3BBoyanov%2C+Maxim+I&rft.aulast=Latta&rft.aufirst=Drew&rft.date=2014-01-01&rft.volume=48&rft.issue=3&rft.spage=1683&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=1520-5851&rft_id=info:doi/10.1021%2Fes4047389 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-10-16 N1 - Date created - 2014-02-04 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/es4047389 ER - TY - JOUR T1 - PDF analysis of ferrihydrite; critical assessment of the under-constrained akdalaite model AN - 1492585772; 2014-008041 AB - In an effort to shed light on the intricate structure of ferrihydrite, its pair distribution function (PDF) derived from high-energy X-ray scattering (HEXS) data was refined with the single-phase akdalaite model, possessing 20% of the Fe atoms in tetrahedral coordination, and a modified akdalaite model in which Fe has only octahedral coordination. The second model is analogous to the predominant f-phase (ABAC stacking sequence) of classical multi-phase ferrihydrite. The contribution from the disordered d-phase component (randomly stacked ABA and ACA double-layer fragments) of the classical model was recovered in the modified akdalaite description by increasing the atomic motion of the ABAC motif above the double-layer distance 4.2 Aa to simulate aperiodic stacking faults. Results show that the original and modified akdalaite representations provide near-identical fits to the ferrihydrite PDF. In the original single-phase and periodic model, the plurality of the Fe-O and Fe-Fe distances resulting from phase mixtures and defects are reconciled artificially by taking a large unit cell with three independent Fe sites, two Fe coordinations, and under-constrained atomic positions. Correlation matrices reveal that many fitted parameters are linearly correlated, thus explaining the crystallographic and chemical inconsistencies of the as-refined akdalaite model which have been identified in the literature. Structurally more constrained, the modified akdalaite model does not suffer from bias and provides a more robust description of the PDF data. However, because structural defects and inhomogeneities are not physically present but introduced artificially in PDF modeling, the crystallographic description of ferrihydrite by real-space modeling of HEXS data has an idealized character. To facilitate further understanding of the ferrihydrite structure, the PDF data are provided as supplementary material (super 1) for interlaboratory testing, and as a resource as more sophisticated tools may be brought to bear on this complex problem. JF - American Mineralogist AU - Manceau, Alain AU - Skanthakumar, S AU - Soderholm, L Y1 - 2014/01// PY - 2014 DA - January 2014 SP - 102 EP - 108 PB - Mineralogical Society of America, Washington, DC VL - 99 IS - 1 SN - 0003-004X, 0003-004X KW - akdalaite KW - pair distribution function KW - X-ray diffraction data KW - coordination KW - diffractograms KW - unit cell KW - tetrahedra KW - crystal structure KW - ferrihydrite KW - X-ray data KW - polyhedra KW - oxides KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492585772?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Mineralogist&rft.atitle=PDF+analysis+of+ferrihydrite%3B+critical+assessment+of+the+under-constrained+akdalaite+model&rft.au=Manceau%2C+Alain%3BSkanthakumar%2C+S%3BSoderholm%2C+L&rft.aulast=Manceau&rft.aufirst=Alain&rft.date=2014-01-01&rft.volume=99&rft.issue=1&rft.spage=102&rft.isbn=&rft.btitle=&rft.title=American+Mineralogist&rft.issn=0003004X&rft_id=info:doi/10.2138%2Fam.2014.4576 L2 - http://www.minsocam.org/MSA/AmMin/TOC/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Abstract, copyright, Mineralogical Society of America | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2014-01-01 N1 - Number of references - 46 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2014-01-30 N1 - CODEN - AMMIAY N1 - SubjectsTermNotLitGenreText - akdalaite; coordination; crystal structure; diffractograms; ferrihydrite; oxides; pair distribution function; polyhedra; tetrahedra; unit cell; X-ray data; X-ray diffraction data DO - http://dx.doi.org/10.2138/am.2014.4576 ER - TY - JOUR T1 - Convection-enhanced delivery and in vivo imaging of polymeric nanoparticles for the treatment of malignant glioma. AN - 1490716961; 23891990 AB - UNLABELLEDA major obstacle to the management of malignant glioma is the inability to effectively deliver therapeutic agent to the tumor. In this study, we describe a polymeric nanoparticle vector that not only delivers viable therapeutic, but can also be tracked in vivo using MRI. Nanoparticles, produced by a non-emulsion technique, were fabricated to carry iron oxide within the shell and the chemotherapeutic agent, temozolomide (TMZ), as the payload. Nanoparticle properties were characterized and subsequently their endocytosis-mediated uptake by glioma cells was demonstrated. Convection-enhanced delivery (CED) can disperse nanoparticles through the rodent brain and their distribution is accurately visualized by MRI. Infusion of nanoparticles does not result in observable animal toxicity relative to control. CED of TMZ-bearing nanoparticles prolongs the survival of animals with intracranial xenografts compared to control. In conclusion, the described nanoparticle vector represents a unique multifunctional platform that can be used for image-guided treatment of malignant glioma.FROM THE CLINICAL EDITORGBM remains one of the most notoriously treatment-unresponsive cancer types. In this study, a multifunctional nanoparticle-based temozolomide delivery system was demonstrated to possess enhanced treatment efficacy in a rodent xenograft GBM model, with the added benefit of MRI-based tracking via the incorporation of iron oxide as a T2* contrast material in the nanoparticles. JF - Nanomedicine : nanotechnology, biology, and medicine AU - Bernal, Giovanna M AU - LaRiviere, Michael J AU - Mansour, Nassir AU - Pytel, Peter AU - Cahill, Kirk E AU - Voce, David J AU - Kang, Shijun AU - Spretz, Ruben AU - Welp, Ulrich AU - Noriega, Sandra E AU - Nuñez, Luis AU - Larsen, Gustavo AU - Weichselbaum, Ralph R AU - Yamini, Bakhtiar AD - Section of Neurosurgery, Department of Surgery, The University of Chicago, Chicago, IL, USA. ; Department of Pathology, The University of Chicago, Chicago, IL, USA. ; Biotarget Inc. and LNK Chemsolutions LLC, Lincoln, NE, USA. ; Material Science Division, Argonne National Laboratory, Argonne, IL, USA. ; Department of Radiation and Cellular Oncology, Pritzker School of Medicine, The University of Chicago, Chicago, IL, USA. ; Section of Neurosurgery, Department of Surgery, The University of Chicago, Chicago, IL, USA. Electronic address: byamini@surgery.bsd.uchicago.edu. Y1 - 2014/01// PY - 2014 DA - January 2014 SP - 149 EP - 157 VL - 10 IS - 1 KW - Ferric Compounds KW - 0 KW - Polymers KW - ferric oxide KW - 1K09F3G675 KW - Dacarbazine KW - 7GR28W0FJI KW - temozolomide KW - YF1K15M17Y KW - Index Medicus KW - Convection KW - Nanoparticle KW - MRI KW - Glioma KW - Rats KW - Polymers -- therapeutic use KW - Magnetic Resonance Imaging KW - Animals KW - Humans KW - Ferric Compounds -- chemistry KW - Xenograft Model Antitumor Assays KW - Polymers -- chemistry KW - Mice KW - Cell Line, Tumor KW - Radiography KW - Drug Delivery Systems KW - Glioma -- pathology KW - Glioma -- drug therapy KW - Brain Neoplasms -- drug therapy KW - Dacarbazine -- analogs & derivatives KW - Dacarbazine -- chemistry KW - Nanoparticles -- therapeutic use KW - Glioma -- diagnostic imaging KW - Dacarbazine -- administration & dosage KW - Brain Neoplasms -- diagnostic imaging KW - Nanoparticles -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490716961?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Nanomedicine+%3A+nanotechnology%2C+biology%2C+and+medicine&rft.atitle=Convection-enhanced+delivery+and+in+vivo+imaging+of+polymeric+nanoparticles+for+the+treatment+of+malignant+glioma.&rft.au=Bernal%2C+Giovanna+M%3BLaRiviere%2C+Michael+J%3BMansour%2C+Nassir%3BPytel%2C+Peter%3BCahill%2C+Kirk+E%3BVoce%2C+David+J%3BKang%2C+Shijun%3BSpretz%2C+Ruben%3BWelp%2C+Ulrich%3BNoriega%2C+Sandra+E%3BNu%C3%B1ez%2C+Luis%3BLarsen%2C+Gustavo%3BWeichselbaum%2C+Ralph+R%3BYamini%2C+Bakhtiar&rft.aulast=Bernal&rft.aufirst=Giovanna&rft.date=2014-01-01&rft.volume=10&rft.issue=1&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Nanomedicine+%3A+nanotechnology%2C+biology%2C+and+medicine&rft.issn=1549-9642&rft_id=info:doi/10.1016%2Fj.nano.2013.07.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2014-08-18 N1 - Date created - 2013-12-30 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Proc Natl Acad Sci U S A. 1999 Nov 23;96(24):14112-7 [10570207] Nanomedicine (Lond). 2014 Apr;9(5):607-21 [23738633] Lancet. 2002 Mar 23;359(9311):1011-8 [11937180] J Control Release. 2004 Jan 8;94(1):1-14 [14684267] Neuro Oncol. 2004 Apr;6(2):104-12 [15134624] Cancer Res. 2004 Sep 15;64(18):6381-4 [15374943] Proc Natl Acad Sci U S A. 1994 Mar 15;91(6):2076-80 [8134351] Radiother Oncol. 1994 Feb;30(2):146-9 [8184112] Biomaterials. 2005 Jun;26(18):3995-4021 [15626447] Brain Res. 2005 Feb 28;1035(2):139-53 [15722054] Anticancer Drugs. 2005 Aug;16(7):691-707 [16027517] J Neurosurg. 2005 Aug;103(2):311-9 [16175862] Neurosurgery. 2005 Oct;57(4):785-96; discussion 785-96 [16239893] J Neurosurg. 2005 Nov;103(5):923-9 [16304999] Neurosurg Focus. 2006;20(4):E12 [16709017] J Theor Biol. 2008 Jan 7;250(1):125-38 [17950757] Expert Rev Anticancer Ther. 2007 Dec;7(12 Suppl):S79-85 [18076322] Neurotherapeutics. 2008 Jan;5(1):123-7 [18164491] Biomaterials. 2009 Apr;30(12):2302-18 [19168213] Cancer Res. 2010 Aug 1;70(15):6303-12 [20647323] Neuro Oncol. 2010 Aug;12(8):871-81 [20511192] J Neurosurg. 2010 Aug;113(2):301-9 [20020841] Neuro Oncol. 2010 Sep;12(9):928-40 [20488958] Cancer J. 2011 May-Jun;17(3):182-9 [21610472] CA Cancer J Clin. 2012 Jan-Feb;62(1):10-29 [22237781] J Nanobiotechnology. 2012;10:15 [22510488] Chem Asian J. 2012 Oct;7(10):2274-85 [22615256] Int J Radiat Oncol Biol Phys. 2001 Sep 1;51(1):100-7 [11516858] N1 - Last updated - 2017-02-22 DO - http://dx.doi.org/10.1016/j.nano.2013.07.003 ER - TY - JOUR T1 - Fibrin-binding, peptide amphiphile micelles for targeting glioblastoma. AN - 1464499529; 24211079 AB - Glioblastoma-targeted drug delivery systems facilitate efficient delivery of chemotherapeutic agents to malignant gliomas, while minimizing systemic toxicity and side effects. Taking advantage of the fibrin deposition that is characteristic of tumors, we constructed spherical, Cy7-labeled, targeting micelles to glioblastoma through the addition of the fibrin-binding pentapeptide, cysteine-arginine-glutamic acid-lysine-alanine, or CREKA. Conjugation of the CREKA peptide to Cy7-micelles increased the average particle size and zeta potential. Upon intravenous administration to GL261 glioma bearing mice, Cy7-micelles passively accumulated at the brain tumor site via the enhanced permeability and retention (EPR) effect, and Cy7-CREKA-micelles displayed enhanced tumor homing via active targeting as early as 1 h after administration, as confirmed via in vivo and ex vivo imaging and immunohistochemistry. Biodistribution of micelles showed an accumulation within the liver and kidneys, leading to micelle elimination via renal clearance and the reticuloendothelial system (RES). Histological evaluation showed no signs of cytotoxicity or tissue damage, confirming the safety and utility of this nanoparticle system for delivery to glioblastoma. Our findings offer strong evidence for the glioblastoma-targeting potential of CREKA-micelles and provide the foundation for CREKA-mediated, targeted therapy of glioma. JF - Biomaterials AU - Chung, Eun Ji AU - Cheng, Yu AU - Morshed, Ramin AU - Nord, Kathryn AU - Han, Yu AU - Wegscheid, Michelle L AU - Auffinger, Brenda AU - Wainwright, Derek A AU - Lesniak, Maciej S AU - Tirrell, Matthew V AD - Institute for Molecular Engineering, The University of Chicago, 5747 S. Ellis Ave. Jones 222, Chicago, IL 60637, USA. Y1 - 2014/01// PY - 2014 DA - January 2014 SP - 1249 EP - 1256 VL - 35 IS - 4 KW - Carbocyanines KW - 0 KW - Drug Carriers KW - Micelles KW - Oligopeptides KW - cysteinyl-arginyl-glutamyl-lysyl-alanyl KW - indotricarbocyanine KW - Fibrin KW - 9001-31-4 KW - Index Medicus KW - Glioblastoma KW - Diagnostic KW - Micelle KW - Self-assembly KW - Brain KW - Targeting KW - Carbocyanines -- metabolism KW - Animals KW - Carbocyanines -- chemistry KW - Mice, Inbred C57BL KW - Mice KW - Brain -- metabolism KW - Male KW - Fibrin -- metabolism KW - Drug Delivery Systems KW - Brain Neoplasms -- drug therapy KW - Oligopeptides -- chemistry KW - Glioblastoma -- metabolism KW - Brain Neoplasms -- metabolism KW - Oligopeptides -- metabolism KW - Drug Carriers -- chemistry KW - Glioblastoma -- drug therapy KW - Drug Carriers -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1464499529?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biomaterials&rft.atitle=Fibrin-binding%2C+peptide+amphiphile+micelles+for+targeting+glioblastoma.&rft.au=Chung%2C+Eun+Ji%3BCheng%2C+Yu%3BMorshed%2C+Ramin%3BNord%2C+Kathryn%3BHan%2C+Yu%3BWegscheid%2C+Michelle+L%3BAuffinger%2C+Brenda%3BWainwright%2C+Derek+A%3BLesniak%2C+Maciej+S%3BTirrell%2C+Matthew+V&rft.aulast=Chung&rft.aufirst=Eun&rft.date=2014-01-01&rft.volume=35&rft.issue=4&rft.spage=1249&rft.isbn=&rft.btitle=&rft.title=Biomaterials&rft.issn=1878-5905&rft_id=info:doi/10.1016%2Fj.biomaterials.2013.10.064 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2014-07-09 N1 - Date created - 2013-12-02 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Colloids Surf B Biointerfaces. 2008 Oct 15;66(2):274-80 [18722754] Mol Pharm. 2008 Jul-Aug;5(4):487-95 [18510338] J Control Release. 2009 Feb 20;134(1):55-61 [19038299] Biomaterials. 2009 Jun;30(18):3189-96 [19285718] Lancet Oncol. 2009 May;10(5):459-66 [19269895] Proc Natl Acad Sci U S A. 2009 Jun 16;106(24):9815-9 [19487682] Langmuir. 2009 Jul 7;25(13):7279-86 [19358585] Chem Rev. 2010 May 12;110(5):2620-40 [20000749] Blood. 2010 Oct 14;116(15):2847-56 [20587786] Nanomedicine. 2010 Dec;6(6):714-29 [20542144] Biomaterials. 2011 Apr;32(12):3340-50 [21296415] Eur J Pharm Biopharm. 2011 Apr;77(3):417-23 [21093587] Ann Neurol. 2011 Jul;70(1):9-21 [21786296] Cancer J. 2012 Jan-Feb;18(1):89-99 [22290262] J Control Release. 2012 May 10;159(3):429-34 [22306333] Biomaterials. 2012 Nov;33(32):8167-76 [22889488] Proc Natl Acad Sci U S A. 2007 Jan 16;104(3):932-6 [17215365] Pharm Res. 2007 Sep;24(9):1733-44 [17554607] Biomaterials. 2013 Jan;34(1):196-208 [23069707] Biomaterials. 2013 Jul;34(21):5138-48 [23582684] Small. 2013 May 27;9(9-10):1521-32 [23019091] Cancer. 2001 Jan 15;91(2):417-22 [11180089] Am J Pathol. 2003 Jun;162(6):1747-57 [12759232] Anal Biochem. 1984 Jun;139(2):408-12 [6476378] Science. 1985 Mar 1;227(4690):1059-61 [3975602] Lancet. 1995 Apr 22;345(8956):1008-12 [7723496] Blood Coagul Fibrinolysis. 1996 Jul;7(5):536-48 [8874864] Pharm Res. 2007 Jan;24(1):1-16 [17109211] Nat Biotechnol. 2007 Oct;25(10):1165-70 [17891134] J Control Release. 2007 Dec 20;124(3):163-71 [17964677] J Neuroimmune Pharmacol. 2008 Jun;3(2):83-94 [18210200] Nat Nanotechnol. 2007 Dec;2(12):751-60 [18654426] Mol Pharm. 2008 Jul-Aug;5(4):505-15 [18672949] Nanomedicine (Lond). 2008 Oct;3(5):703-17 [18817471] N1 - Last updated - 2017-02-22 DO - http://dx.doi.org/10.1016/j.biomaterials.2013.10.064 ER - TY - CPAPER T1 - Direct and Semi-direct Radiative Responses to Observation-Constrained Aerosol Absorption over S Asia T2 - 46th American Geophysical Union Fall Meeting AN - 1496736064; 6258558 JF - 46th American Geophysical Union Fall Meeting AU - Feng, Yan AU - Kotamarthi, Veerabhadra AU - Manoharan, Vani Y1 - 2013/12/09/ PY - 2013 DA - 2013 Dec 09 KW - Asia UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1496736064?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acpi&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=46th+American+Geophysical+Union+Fall+Meeting&rft.atitle=Direct+and+Semi-direct+Radiative+Responses+to+Observation-Constrained+Aerosol+Absorption+over+S+Asia&rft.au=Feng%2C+Yan%3BKotamarthi%2C+Veerabhadra%3BManoharan%2C+Vani&rft.aulast=Feng&rft.aufirst=Yan&rft.date=2013-12-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=46th+American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ L2 - http://agu-fm13.abstractcentral.com/planner.jsp LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-12-31 N1 - Last updated - 2014-02-10 ER - TY - JOUR T1 - Complementary vibrational spectroscopy investigations of iron and iron-bearing minerals AN - 1692746090; 2015-063008 AB - The high-pressure elastic and thermodynamic properties of iron have been extensively studied because iron is thought to be the main constituent in Earth's core, along with approximately 5 to 10 wt% nickel and some light elements. In particular, nuclear resonant inelastic x-ray scattering (NRIXS) is an isotope-selective technique that has been used to investigate the vibrational properties of 57Fe at high-pressure via its measured phonon density of states (DOS). For example, the low-energy region of a material's phonon DOS is proportional to its Debye sound velocity (vD), which reflects an average of its compressional (vP) and shear (vS) sound velocities, weighted more heavily towards vS. In order to separate the compressional and shear components of vD, one often relies on established equations of state (EOS) which, in the case of iron, diverge above 100 GPa. In turn, such uncertainties are propagated into iron's sound velocities--particularly vP--at pressures approaching those of Earth's core. Here we demonstrate how the combination of NRIXS and high-energy resolution inelastic x-ray scattering (HERIX) data allows for the determination of both vP and vS, independent of an EOS. In particular, we used NRIXS and HERIX to probe the total phonon DOS and points along the longitudinal acoustic phonon branch, respectively, of pure iron loaded into similarly prepared diamond anvil cells, up to a pressure of 171 GPa at 300 K. Experiments were performed at the Advanced Photon Source and European Synchrotron Radiation Facility, where sample volumes (densities) were also measured with in-situ x-ray diffraction. Using established NRIXS and HERIX fitting procedures, we determined iron's density-dependent vD and vP, respectively, accounting for mass effects in the former parameter using a harmonic oscillator model. The combination of these datasets provides a new tight constraint on the density-dependent compressional and shear sound velocities of iron, independent of an EOS. In light of these new findings, we will discuss specific implications for Earth's core, and give examples of additional systems to which such a combination of techniques can be applied. Finally, in the case of pure 57Fe, the total phonon DOS is measured by NRIXS, thus providing a wealth of information about its thermodynamic properties. For example, iron's mean force constant can be obtained from its integrated phonon DOS, and is related to iron's equilibrium isotopic partition function ratios (beta -factors). Therefore, we will present how high-pressure NRIXS experiments can provide information about the predicted distribution of iron isotopes during equilibrium processes involving solid iron in the deep Earth. JF - American Geophysical Union Fall Meeting AU - Murphy, C A AU - Antonangeli, Daniele AU - Fiquet, Guillaume AU - Fei, Y AU - Alatas, A AU - Dera, P K AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR52A EP - 01 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692746090?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Complementary+vibrational+spectroscopy+investigations+of+iron+and+iron-bearing+minerals&rft.au=Murphy%2C+C+A%3BAntonangeli%2C+Daniele%3BFiquet%2C+Guillaume%3BFei%2C+Y%3BAlatas%2C+A%3BDera%2C+P+K%3BAnonymous&rft.aulast=Murphy&rft.aufirst=C&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Nuclear resonant inelastic x-ray scattering; methodology and extraction of vibrational properties of minerals AN - 1692744863; 2015-063009 AB - Nuclear resonant inelastic x-ray scattering (NRIXS) is a synchrotron radiation based experimental method. Since its introduction almost 20 years ago, NRIXS has found an expanding range of applications of studying lattice dynamics in condensed matter physics, materials science, high-pressure research, geosciences, and biophysics. After the first high pressure application in geophysics of measuring sound velocity of iron up to 153 GPa, it has become a widely used method to investigate deep earth compositions through sound velocity measurements. Thermodynamic properties are also explored, in particular Grueneisen parameters. Later, it was realized that isotope fractionaton factors can be derived from NRIXS measurements. Sum rules and moments of NRIXS is a critical part of this methodology. We will discuss this and in general the data analysis of NRIXS which enables the above mentioned applications. JF - American Geophysical Union Fall Meeting AU - Hu, M Y AU - Alp, E E AU - Bi, W AU - Sturhahn, Wolfgang AU - Toellner, T S AU - Zhao, J AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR52A EP - 02 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Nuclear+resonant+inelastic+x-ray+scattering%3B+methodology+and+extraction+of+vibrational+properties+of+minerals&rft.au=Hu%2C+M+Y%3BAlp%2C+E+E%3BBi%2C+W%3BSturhahn%2C+Wolfgang%3BToellner%2C+T+S%3BZhao%2C+J%3BAnonymous&rft.aulast=Hu&rft.aufirst=M&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Two-phase deformation of lower mantle mineral analogs AN - 1692744378; 2015-059353 AB - While much is known about preferred orientation in single phase rocks, deformation of polyphase rocks is largely unexplored. Nearly all of the Earth is composed of polymineral aggregates, including the lower mantle, which is of critical importance for understanding the geodynamic evolution of the planet. Geodynamic models predict large strains due to convection in the mantle, and polycrystal plasticity simulations suggest strong crystallographic preferred orientation (CPO). However, these models ignore interaction among phases, which is important for the lower mantle, estimated to be composed of approximately 25% soft magnesiowustite (Mg,Fe)O and approximately 70% harder Mg-perovskite (MgSiO (sub 3) ). Grains of the soft phase may become interconnected and act as a lubricant between grains of the harder phase, or the soft phase may not be interconnected, causing deformation to be absorbed by the harder phase. To study the effect of a second phase on CPO, we performed deformation experiments in the deformation-DIA (D-DIA) at the Advanced Photon Source (APS) while collecting X-ray diffraction patterns in situ. Since D-DIA cannot reach pressures of the lower mantle, we chose analog minerals halite (NaCl) and neighborite (NaMgF (sub 3) ) with the same structures and relative strengths as the original mantle minerals. Information on grain structure and distribution before and after deformation was collected using X-ray microtomography, both at the APS and the Advanced Light Source (ALS). Results from D-DIA experiments show that when present in as little as 25%, the soft phase absorbs much of the deformation, greatly reducing CPO of the harder phase. Conversely, CPO in NaCl is highest for the sample with highest NaCl content. This suggests that crystallographic orientation develops and evolves best in rocks largely composed of one mineral phase, and the addition of a second phase greatly hinders CPO, even at high strain. In addition, microtomography data shows that soft NaCl surrounds the harder grains of NaMgF (sub 3) . These findings are very encouraging, and we continue our study of two-phase deformation texture and microstructure with fast Fourier transform (FFT) modeling which takes into account interactions among grains. JF - American Geophysical Union Fall Meeting AU - Kaercher, P M AU - Zepeda-Alarcon, E AU - Lebensohn, R AU - Miyagi, Lowell M AU - Kanitpanyacharoen, J AU - Wang, Y AU - Parkinson, D AU - DeCarlo, F AU - Wenk, H AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR41A EP - 2344 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692744378?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Two-phase+deformation+of+lower+mantle+mineral+analogs&rft.au=Kaercher%2C+P+M%3BZepeda-Alarcon%2C+E%3BLebensohn%2C+R%3BMiyagi%2C+Lowell+M%3BKanitpanyacharoen%2C+J%3BWang%2C+Y%3BParkinson%2C+D%3BDeCarlo%2C+F%3BWenk%2C+H%3BAnonymous&rft.aulast=Kaercher&rft.aufirst=P&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Noble gas radionuclide (Kr-85, Ar-39, Kr-81) concentrations in deep fracture waters of the Withwatersrand Basin South Africa AN - 1692743329; 2015-059009 AB - (super 81) Kr has been proposed since many years an ideal tracer for dating subsurface fluids on timescales up to 2 million years. However, only recently the method became practicable for real case investigations due to significant analytical improvements [1]. In this study radioactive noble gas isotopes ( (super 81) Kr, (super 85) Kr and (super 39) Ar) were applied for the characterisation of fracture waters in the deep gold mines of the Witwatersrand Basin, South Africa [2]. Those waters catalyzed interest because of deep microbial communities that persists to depths of over 3 km [3]. The key objective of the present study is to further constrain the origin of the fluids, to determine the timing of deep subsurface life and to test the (super 81) Kr method in all kinds of environments. In contrast to expectations [4] we discovered that underground production of (super 81) Kr is a significant process in the rocks of the Withwatersrand and Ventersdorp Supergroups. All measured (super 81) Kr activities from fracture water were significantly higher than in atmospheric equilibrium. This is most likely related to elevated U/Th concentrations in the rock strata. Radiometric decay dating is complicated in such cases. [1]. W. Jiang et al., Geochim. Cosmochim. Acta 91, 1 (2012). [2].T. C. Onstott et al., Geomicrobiology J. 26, 269 (2009). [3].G. Borgonie et al., Nature 474, 79. [4]. B. Lehmann et al, WRR. 29, 2027 (1993). JF - American Geophysical Union Fall Meeting AU - Purtschert, R AU - Onstott, T C AU - Jiang, W AU - Lu, Z AU - Mueller, P AU - van Heerden, E AU - Erasmus, M AU - Borgonie, G AU - Linage, B AU - Kuloyo, O AU - Kipfer, R AU - Brennwald, Matthias S AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H13I EP - 1492 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692743329?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Noble+gas+radionuclide+%28Kr-85%2C+Ar-39%2C+Kr-81%29+concentrations+in+deep+fracture+waters+of+the+Withwatersrand+Basin+South+Africa&rft.au=Purtschert%2C+R%3BOnstott%2C+T+C%3BJiang%2C+W%3BLu%2C+Z%3BMueller%2C+P%3Bvan+Heerden%2C+E%3BErasmus%2C+M%3BBorgonie%2C+G%3BLinage%2C+B%3BKuloyo%2C+O%3BKipfer%2C+R%3BBrennwald%2C+Matthias+S%3BAnonymous&rft.aulast=Purtschert&rft.aufirst=R&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Groundwater age structure and palaeo hydrogeology over a 500 kyr time scale revealed from Krypton 81 and a multiple tracer study; Great Artesian Basin AN - 1692742964; 2015-059005 AB - We report on the most comprehensive set of krypton -81 data to be analysed so far. Our study site is on the western margin of the Great Artesian Basin (GAB). The study area is focused on the western margin of the GAB between the Finke River system in the Northern Territory and the iconic Dalhousie springs in South Australia. This represents the direction of groundwater flow from recharge to discharge through the Dalhousie spring complex. Because of its vast size and the potential for large regional flow systems to occur, the GAB has been considered an ideal basin to test emerging groundwater dating techniques such as Cl-36 and He-4. However both of these techniques are subjected to large degrees of uncertainty, as they require a detailed understanding of different sources and sinks of these two isotopes. Contrasting this Kr-81 is considered to be an ideal tracer as it contains only one source, the atmosphere with no or at most minimal sub surface production. For the first time we have provided a comprehensive suite of analyse not only of Cl-36, He-4, C-14, Ar-39, stable isotopes of the water molecule and noble gases but also, Kr-85 and Kr-81. Our results indicate a spectrum of "groundwater ages" ranging from modern as indicated by thermonuclear C-14 and Ar-39 up to hundreds of thousands of years as indicated by Kr-81, Cl-36 and He-4. The data set indicates a wide range of stable isotopes of the water molecule as well as variability in noble gas recharge temperatures that suggest that not only has this region been subjected to changes in climate in the recharge zone but also testaments to a changes in the dominate direction of rainfall indicated by a change in recharge mechanism at the beginning of the Holocene. As suggested previously this groundwater flow transect may represent an ideal "type section" for testing new and emerging environmental tracers in hydrogeology. JF - American Geophysical Union Fall Meeting AU - Love, A J AU - Purtschert, R AU - Jiang, W AU - Lu, Z AU - Tosaki, Yuki AU - Fulton, Simon AU - Wohling, Daniel AU - Shand, Paul AU - Broder, Lisa AU - Aeschbach, W AU - Rousseau-Gueutin, Pauline AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H13I EP - 1488 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742964?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Groundwater+age+structure+and+palaeo+hydrogeology+over+a+500+kyr+time+scale+revealed+from+Krypton+81+and+a+multiple+tracer+study%3B+Great+Artesian+Basin&rft.au=Love%2C+A+J%3BPurtschert%2C+R%3BJiang%2C+W%3BLu%2C+Z%3BTosaki%2C+Yuki%3BFulton%2C+Simon%3BWohling%2C+Daniel%3BShand%2C+Paul%3BBroder%2C+Lisa%3BAeschbach%2C+W%3BRousseau-Gueutin%2C+Pauline%3BAnonymous&rft.aulast=Love&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Laboratory for radiokrypton dating AN - 1692742785; 2015-058997 AB - Due to its simple production and transport processes in the terrestrial environment, the long-lived noble-gas isotope (super 81) Kr (half-life = 230 kyr) is the ideal tracer for studying old water and ice in the age range of 10 (super 5) -10 (super 6) years, a range beyond the reach of (super 14) C. (super 81) Kr dating, a concept pursued in the past four decades by numerous laboratories employing a variety of techniques, is now available for the first time to the earth science community at large. This is made possible by the development of ATTA-3 (Jiang et al., GCA 91, 1-6; 2012), an efficient and selective atom counter based on the Atom Trap Trace Analysis method (Chen et al., Science 286, 1139-1141; 1999). The instrument is capable of measuring both (super 81) Kr/Kr and (super 85) Kr/Kr ratios of environmental samples in the range of 10 (super -14) -10 (super -10) . For (super 81) Kr-dating in the age range of 150 - 1,500 kyr, the required sample size is 5 - 10 micro-L STP of krypton gas, which can be extracted from approximately 100 - 200 kg of water or 40 - 80 kg of ice. For (super 85) Kr/Kr analysis, the required sample size is generally smaller by an order of magnitude because of the isotope's higher initial abundance in the atmosphere. The Laboratory for Radiokrypton Dating is currently equipped to analyze up to 120 samples per year. With future equipment upgrades, this limit can be increased as demand grows. In the period since November 2011, the Laboratory has measured both (super 81) Kr/Kr and (super 85) Kr/Kr ratios in over 50 samples that had been extracted by collaborators from six different continents. The samples were from groundwater wells in the Great Artesian Basin (Australia), Guarani Aquifer (Brazil), and Locust Grove (Maryland); from brine wells of the Waste Isolation Pilot Plant (New Mexico); from geothermal steam vents in Yellowstone National Park; from near-surface ice at Taylor Glacier, Antarctica; and from deep mines in South Africa. Sample collection and purification was performed by groups including the University of Illinois at Chicago, University of Bern, and International Atomic Energy Agency. ATTA is a laser-based atom counting method, not a mass spectrometry method. A magneto-optical trap is used to capture neutral atoms (rather than ions) of the desired isotope using laser beams. A photo-sensor detects the laser induced fluorescence emitted by the individual trapped atoms. ATTA is unique among trace analysis techniques in that it is free of interferences from any other isotopes, isobars, atomic or molecular species. In an experiment demonstrating that ATTA-3 can analyze (super 39) Ar/Ar ratios in environmental samples, no interference from other atomic or molecular species was observed at the 1X10 (super -16) level (Jiang et al., Phys. Rev. Lett. 106, 103001; 2011). This work proved the feasibility of performing (super 39) Ar dating using the ATTA method. We are supported by DOE, Office of Nuclear Physics, under contract DE-AC02-06CH11357, and by Argonne National Laboratory. JF - American Geophysical Union Fall Meeting AU - Lu, Z AU - Bailey, K AU - Jiang, W AU - Mueller, P AU - O'Connor, T P AU - Zappala, J C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H13I EP - 1480 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692742785?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Laboratory+for+radiokrypton+dating&rft.au=Lu%2C+Z%3BBailey%2C+K%3BJiang%2C+W%3BMueller%2C+P%3BO%27Connor%2C+T+P%3BZappala%2C+J+C%3BAnonymous&rft.aulast=Lu&rft.aufirst=Z&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Krypton-81 and groundwater flow in the culebra dolomite near the Waste Isolation Pilot Plant, New Mexico AN - 1692740820; 2015-059007 AB - The Waste Isolation Pilot Plant (WIPP) in New Mexico is the first geologic repository for disposal of transuranic nuclear waste from defense-related programs of the US Department of Energy. It is constructed within halite beds of the Permian-age Salado Formation. The Culebra Dolomite, confined within Rustler Formation evaporites, is a potential pathway for radionuclide transport from the repository to the accessible environment in the human-disturbed repository scenario. Although extensive subsurface characterization and numerical flow modeling of groundwater has been done in the vicinity of the WIPP, few studies have used natural isotopic tracers to validate the flow models at this site. We performed measurements of the cosmogenic isotopic tracer (super 81) Kr (half-life 229,000 yr) in two Culebra monitoring wells near the WIPP site, and compared (super 81) Kr model ages with the results of an ensemble of flow models. The (super 81) Kr model ages were approximately 130,000 and approximately 330,000 yr for high-transmissivity and low-transmissivity portions of the aquifer, respectively. These model ages are in broad agreement with flow model results, when taking into account diffusive exchange of Kr between the aquifer and the stagnant zones of the confining formations. JF - American Geophysical Union Fall Meeting AU - Sturchio, N C AU - Kuhlman, K L AU - Yokochi, R AU - Jiang, W AU - Lu, Z AU - Mueller, P AU - Yang, G AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H13I EP - 1490 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692740820?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Krypton-81+and+groundwater+flow+in+the+culebra+dolomite+near+the+Waste+Isolation+Pilot+Plant%2C+New+Mexico&rft.au=Sturchio%2C+N+C%3BKuhlman%2C+K+L%3BYokochi%2C+R%3BJiang%2C+W%3BLu%2C+Z%3BMueller%2C+P%3BYang%2C+G%3BAnonymous&rft.aulast=Sturchio&rft.aufirst=N&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Cu and Ni solubility in high-temperature aqueous fluids AN - 1692740760; 2015-059298 AB - Copper and nickel are generally associated in magmatic sulfide ores formed by immiscibility in mafic and ultramafic magmas. In contrast, hydrothermal Cu-Ni deposits are uncommon and these elements usually occur in separate Cu-Fe-sulfide and Ni-Co-Ag-Bi-As-S mineralizations. Among the porphyry-type deposits formed at high temperatures to about 700 degrees C, there are many copper but no nickel deposits, pointing to a higher solubility of Cu relative to Ni in aqueous fluids at such conditions. The aim of this study is to measure the solubilities of Cu and Ni sulfides in high-temperature hydrothermal fluids in-situ using synchrotron-radiation micro-X-ray fluorescence spectrometry. Synthetic CuS or NiS crystals were partly dissolved in aqueous NaCl, NaCl+HCl, or CaCl (sub 2) solutions at temperatures of 400 to 600 degrees C and pressures between 70 and 900 MPa using a modified hydrothermal diamond-anvil cell with a recess in one diamond. Consecutive XRF spectra of the fluid in the recess were collected in a confocal mode to exclude signal contributions from the crystals in the sample chamber. Equilibrium was assumed if the determined concentrations of the dissolved metals indicated that a steady state was attained. The measured dissolved Cu concentrations ranged between 22 ppm at 70 MPa, 500 degrees C and 235 ppm at 306MPa, 600 degrees C in 0.5 to 1.6 m NaCl solutions. We observed a decrease in Cu concentration with increasing pressure at constant temperature, and for 1.6 m NaCl an increase by a factor of two along an isochore from 120 MPa, 500 degrees C to 306 MPa, 600 degrees C. Higher Cu solubilities were determined in more concentrated solutions. A preliminary run with a more acidic NaCl+HCl solution (pH approximately 1) revealed a dramatic increase in the dissolved Cu concentration to 7898 ppm at 170 MPa, 500 degrees C. The measured dissolved Ni concentrations ranged between 3 ppm at 200 MPa, 500 degrees C in a 1 m NaCl solution and 33 ppm at 411 MPa, 500 degrees C in a 0.75 m CaCl (sub 2) solution. A solubility maximum at 500 degrees C along an isochore was observed for both solutions. The Ni solubility increased with pressure at constant temperature. Experiments with aqueous CaCl (sub 2) solutions resulted in higher dissolved Ni concentrations compared to NaCl solutions at similar pressure-temperature conditions. Our experiments suggest that the solubility of Cu and Ni in aqueous fluids is mainly governed by fluid composition. For both elements, solubility increased in more chlorine-rich fluids, which could reflect metal-chlorine complexation. Preliminary results for Cu indicate a strong dependence of the solubility on the pH of the fluid. A contrasting solubility behavior of Cu and Ni was observed with increasing pressure, which might be one reason for the difference in hydrothermal ore deposit formation. JF - American Geophysical Union Fall Meeting AU - Watenphul, A AU - Scholten, Lea AU - Beermann, O AU - Kavner, A AU - Alraun, Philipp AU - Falkenberg, Gerald AU - Newville, M AU - Lanzirotti, A AU - Schmidt, C AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR33A EP - 2311 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692740760?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Cu+and+Ni+solubility+in+high-temperature+aqueous+fluids&rft.au=Watenphul%2C+A%3BScholten%2C+Lea%3BBeermann%2C+O%3BKavner%2C+A%3BAlraun%2C+Philipp%3BFalkenberg%2C+Gerald%3BNewville%2C+M%3BLanzirotti%2C+A%3BSchmidt%2C+C%3BAnonymous&rft.aulast=Watenphul&rft.aufirst=A&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Effect of the magnetic fields and temperature on amorphous polymorphism and crystal polymorphism of amorphous Ce60Al40 at high pressure AN - 1692740735; 2015-059232 AB - The metallic glass have drawn a lot of interest from researchers, because of their special structure, superior physical and chemical properties compared to their crystalline phases. Recently, some studies of amorphous materials have revealed that more than one distinct amorphous phase can be formed from the same substance, a phenomenon that is called amorphous polymorphism. For example, Ce3Al metallic glass shows that the pressure-induced Kondo volume collapse and 4f electron delocalization of Ce under high pressure, which caused bond shortening, and Ce3Al metallic glass also exhibited turning points at the polyamorphic transition pressure, 1.5 GPa. It is interested that the Ce75Al25 metallic glass devitrifies independently into a face-centered cubic (FCC) crystal with the identical orientation under 25 gigapascals hydrostatic pressures. It is also puzzling that the polyamorphic transition in Ce55Al45 metallic glass is smooth and continuous between 2 and 13.5 GPa, and has a large hysteresis loop upon the releasing pressure cycle below 2 GPa. This behavior is different from the g-a Ce 4f electronic delocalization transition which occurs sharply at 0.9 GPa without hysteresis, but is similar to the structural polyamorphism involving coordination rearrangement which characteristically occurs over a pressure range and shows considerable hysteresis. Meanwhile, the research on structural polyamorphism of Ce60Al40 are not very sufficient. Therefore, it is important to research that the relation between the structural polyamorphism and magnet and physical properties of Ce60Al40 under high pressure with varieties temperature and magnet fields. Here, it conduct the in situ x-ray diffraction of Ce60Al40 metallic glass sample in DAC at high pressure using new sources of coherent X-rays to characterize the polyamorphism of sample, and compare to the results of molecular dynamics simulation, and probe the the relation between the structural polyamorphism and magnet and physical properties of Ce60Al40. JF - American Geophysical Union Fall Meeting AU - Chen, J AU - Li, R AU - Li, Liangliang AU - Liu, Haozhe AU - Cai, Z AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR31A EP - 2261 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 02C:Geochemistry of rocks, soils, and sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1692740735?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Effect+of+the+magnetic+fields+and+temperature+on+amorphous+polymorphism+and+crystal+polymorphism+of+amorphous+Ce60Al40+at+high+pressure&rft.au=Chen%2C+J%3BLi%2C+R%3BLi%2C+Liangliang%3BLiu%2C+Haozhe%3BCai%2C+Z%3BAnonymous&rft.aulast=Chen&rft.aufirst=J&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-07-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - Carbon-rich inner core inferred from anomalously low shear-wave velocity of non-magnetic Fe (sub 7) C (sub 3) AN - 1686060500; 2015-049063 AB - Recent studies suggest that Fe (sub 7) C (sub 3) is a candidate component of the Earth's inner core. Single-crystal X-ray diffraction measurements confirmed the stability of Fe (sub 7) C (sub 3) up to core pressures, and provide support for the scenario of carbon-rich inner core on the basis of density match [Chen et al., 2012]. To further test the hypothesis of Fe (sub 7) C (sub 3) -dominant inner core, we have performed nuclear resonant inelastic X-ray scattering (NRIXS) measurements of Fe (sub 7) C (sub 3) up to 150 GPa at 300 K, in order to determine the shear-wave (V (sub S) ) and compressional-wave (V (sub P) ) velocities for comparison with seismic models. Our results show that the high-spin to low-spin magnetic transition in Fe (sub 7) C (sub 3) near 50 GPa, as manifested by the change of compression behavior and our recent X-ray Emission Spectroscopy measurements, also significantly affects the pressure dependence of the V (sub S) and V (sub P) . Extrapolating the measured sound velocities to the relevant core pressures and temperatures, we found that the non-magnetic Fe (sub 7) C (sub 3) could reproduce the V (sub S) of the inner core, making it potentially the largest reservoir of carbon in Earth. JF - American Geophysical Union Fall Meeting AU - Chen, Bin AU - Li, Zeyu AU - Zhang, D AU - Zhao, J AU - Hu, M AU - Bi, W AU - Xiao, Y AU - Chow, P AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract MR11B EP - 06 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 18:Solid-earth geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686060500?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Carbon-rich+inner+core+inferred+from+anomalously+low+shear-wave+velocity+of+non-magnetic+Fe+%28sub+7%29+C+%28sub+3%29&rft.au=Chen%2C+Bin%3BLi%2C+Zeyu%3BZhang%2C+D%3BZhao%2C+J%3BHu%2C+M%3BBi%2C+W%3BXiao%2C+Y%3BChow%2C+P%3BAnonymous&rft.aulast=Chen&rft.aufirst=Bin&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Analyzing sediment impacts for the Glen Canyon long-term experimental and management plan EIS AN - 1686057748; 2015-048985 AB - The Department of the Interior is currently evaluating alternatives in the Glen Canyon Dam Long-term Experimental and Management Plan (LTEMP) Environmental Impact Statement (EIS). The purpose of the EIS to evaluate dam operations and identify management actions and experimental options that will provide a framework for adaptively managing operations of Glen Canyon Dam over the next 15 to 20 years. Sediment and sandbars along the Colorado River are important downstream resources in Grand Canyon National Park. Sediment is one of the resources being analyzed for impacts in Marble and Grand Canyon. Since 1963, Glen Canyon Dam has regulated the flow in the Colorado River by decreasing the magnitude of annual flood flows and increasing the magnitude of base flows, and has nearly eliminated main-channel sand supply from the upper Colorado River Basin. These changes disrupted the natural ability of the river to build and maintain sandbars. Grand Canyon sandbars provide camping beaches for river runners and hikers, generate habitat for native fish and vegetation, and supply sediment to protect archaeological resources. In order to measure the impacts of the different alternatives on the sediment resource, several different models are being utilized. A sand budget numerical model that tracks the storage and transport of sand in the Colorado River below Glen Canyon Dam developed by the USGS is utilized. The model uses empirically based rating curves for specific particle sizes. The decision criteria for the high flow experiment environmental assessment is applied to the sand budget model as well as other flow changes incorporated in the alternatives. An empirically based sandbar volume model was also developed for the LTEMP EIS process to address the sandbar resource impacts. Based on the model results, performance criteria have been established to allow for comparisons between the alternatives. The criteria include the changes in the sand mass balance of the system, the sandbar volume changes, the amount of sand being transported at higher flows and the variability in the high flow experiments. JF - American Geophysical Union Fall Meeting AU - Russell, K AU - Huang, V AU - Varyu, D AU - Greimann, B P AU - O'Connor, B L AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract H31B EP - 1153 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1686057748?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Analyzing+sediment+impacts+for+the+Glen+Canyon+long-term+experimental+and+management+plan+EIS&rft.au=Russell%2C+K%3BHuang%2C+V%3BVaryu%2C+D%3BGreimann%2C+B+P%3BO%27Connor%2C+B+L%3BAnonymous&rft.aulast=Russell&rft.aufirst=K&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2015-01-01 N1 - PubXState - DC N1 - Last updated - 2015-06-05 N1 - CODEN - #07548 ER - TY - JOUR T1 - Decoupled connection between soil microbial community and organic geochemical composition; a case study in the Arctic tundra, North Slope of Alaska AN - 1566814200; 2014-076144 AB - Two-way feedback interactions persist between the soil microbiology and the carbon (C) geochemistry through C substrate-uptake preference and microbial utilization/transformation. Therefore, an understanding of how those continuously iterative processes influence soil microbial community and geochemical composition of soil organic matter is essential. However, finding direct correlations between the both has remained a challenge and been little explored. Here we show an unequivocal evidence that the forces structuring the soil microbial community and the organic geochemical composition of tundra soils differ. We determined soil microbial community and soil organic C (SOC) composition by four molecular-level techniques, i.e. DNA pyrosequencing and phospholipids fatty acid (PLFA) biomarkers for microbial analysis and solid-state 13C NMR spectroscopy and neutral sugars for SOC characterization for active-layer and permafrost. By independently summarizing explanatory structures of the relative abundance of microbial groups and soil C forms (using ordination and cluster analysis), we found that microbial community and the SOC chemistry were each consistently characterized by the two distinct measurement approaches. These methods identified distinct pattern differences between soil horizons (permafrost layer versus active organic layer) in both microbial community and the SOC. We used correlations to build the hypothesis about "decoupled connection between microbiology and SOC geochemistry", particularly of their non-linearity in tundra soils, and then to assess how the C decomposition rate constants (at 4 degrees C) relate to those structural patterns. We demonstrate that the controls on soil microbial community structure are fundamentally different from those on substrate C composition within tundra soils, thus enriching our understanding of C biogeochemical cycling and associated microbial behaviors. JF - American Geophysical Union Fall Meeting AU - Liang, Chao AU - Steffens, M AU - Jastrow, J D AU - Zhang, X AU - Antonopoulos, D A AU - Kogel-Knabner, I AU - Anonymous Y1 - 2013/12// PY - 2013 DA - December 2013 SP - Abstract B33G EP - 0566 PB - American Geophysical Union, Washington, DC VL - 2013 KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1566814200?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Geophysical+Union+Fall+Meeting&rft.atitle=Decoupled+connection+between+soil+microbial+community+and+organic+geochemical+composition%3B+a+case+study+in+the+Arctic+tundra%2C+North+Slope+of+Alaska&rft.au=Liang%2C+Chao%3BSteffens%2C+M%3BJastrow%2C+J+D%3BZhang%2C+X%3BAntonopoulos%2C+D+A%3BKogel-Knabner%2C+I%3BAnonymous&rft.aulast=Liang&rft.aufirst=Chao&rft.date=2013-12-01&rft.volume=2013&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=American+Geophysical+Union+Fall+Meeting&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2013 fall meeting N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by, and/or abstract, Copyright, American Geophysical Union, Washington, DC, United States N1 - Date revised - 2014-01-01 N1 - PubXState - DC N1 - Last updated - 2014-10-02 N1 - CODEN - #07548 ER - TY - JOUR T1 - New LIC vectors for production of proteins from genes containing rare codons AN - 1492644186; 18864886 AB - In the effort to produce proteins coded by diverse genomes, structural genomics projects often must express genes containing codons that are rare in the production strain. To address this problem, genes expressing tRNAs corresponding to those codons are typically coexpressed from a second plasmid in the host strain, or from genes incorporated into production plasmids. Here we describe the modification of a series of LIC pMCSG vectors currently used in the high-throughput (HTP) production of proteins to include crucial tRNA genes covering rare codons for Arg (AGG/AGA) and Ile (AUA). We also present variants of these new vectors that allow analysis of ligand binding or co-expression of multiple proteins introduced through two independent LIC steps. Additionally, to accommodate the cloning of multiple large proteins, the size of the plasmids was reduced by approximately one kilobase through the removal of non-essential DNA from the base vector. Production of proteins from core vectors of this series validated the desired enhanced capabilities: higher yields of proteins expressed from genes with rare codons occurred in most cases, biotinylated derivatives enabled detailed automated ligand binding analysis, and multiple proteins introduced by dual LIC cloning were expressed successfully and in near balanced stoichiometry, allowing tandem purification of interacting proteins. JF - Journal of Structural and Functional Genomics AU - Eschenfeldt, William H AU - Makowska-Grzyska, Magdalena AU - Stols, Lucy AU - Donnelly, Mark I AU - Jedrzejczak, Robert AU - Joachimiak, Andrzej AD - Biosciences Division, Midwest Center for Structural Genomics, Argonne National Laboratory, Bldg. 202/Rm. BE111, 9700 South Cass Avenue, Argonne, IL, 60439, USA, andrzejj@anl.gov Y1 - 2013/12// PY - 2013 DA - Dec 2013 SP - 135 EP - 144 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 14 IS - 4 SN - 1345-711X, 1345-711X KW - Genetics Abstracts; Biochemistry Abstracts 2: Nucleic Acids; Biotechnology and Bioengineering Abstracts KW - Structure-function relationships KW - tRNA KW - Codons KW - Cloning vectors KW - DNA KW - protein purification KW - genomics KW - Plasmids KW - W 30925:Genetic Engineering KW - G 07880:Human Genetics KW - N 14830:RNA UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1492644186?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Structural+and+Functional+Genomics&rft.atitle=New+LIC+vectors+for+production+of+proteins+from+genes+containing+rare+codons&rft.au=Eschenfeldt%2C+William+H%3BMakowska-Grzyska%2C+Magdalena%3BStols%2C+Lucy%3BDonnelly%2C+Mark+I%3BJedrzejczak%2C+Robert%3BJoachimiak%2C+Andrzej&rft.aulast=Eschenfeldt&rft.aufirst=William&rft.date=2013-12-01&rft.volume=14&rft.issue=4&rft.spage=135&rft.isbn=&rft.btitle=&rft.title=Journal+of+Structural+and+Functional+Genomics&rft.issn=1345711X&rft_id=info:doi/10.1007%2Fs10969-013-9163-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-12-01 N1 - Number of references - 46 N1 - Last updated - 2014-06-12 N1 - SubjectsTermNotLitGenreText - Structure-function relationships; tRNA; DNA; Cloning vectors; Codons; genomics; protein purification; Plasmids DO - http://dx.doi.org/10.1007/s10969-013-9163-9 ER - TY - JOUR T1 - A comparison of Fuel Cell Testing protocols-A case study: Protocols used by the U.S. Department of Energy, European Union, International Electrotechnical Commission/Fuel Cell Testing and Standardization Network, and Fuel Cell Technical Team AN - 1443375966; 18680547 AB - Argonne National Laboratory (Argonne) and the Joint Research Centre-Institute for Energy and Transport (JRC-IET) collaborated to understand the aging behavior of polymer-electrolyte membrane stacks when operated under different duty cycles. The duty cycles were that used by the U.S. Department of Energy (DST) and the US Fuel Cell Council; the New European Drive Cycle (ECE R15); that used in IEC-TS62282-7-1 (IEC) and Fuel Cell Testing and Standardization Network; and the one proposed by the US Driving Research and Innovation for Vehicle Efficiency and Energy Sustainability Fuel Cell Technical Team (FCTT). The stacks were cycled using the duty profile in each protocol for 200 h; stack performance was measured every 100 h. Analysis of the relative changes in the average cell potentials at 180 A showed that the rate of performance decline could be ordered as IEC > ECE R15, the latter being slightly greater than or approximately equal to DST and FCTT. Comparing this ordering to the length of time at full power in the duty cycle with the degradation rates shows that they are related. Most likely, the underlying cause of performance decline can be attributed to the manner in which the product water interacts with the stack components. JF - Journal of Power Sources AU - Bloom, I AU - Walker, L K AU - Basco, J K AU - Malkow, T AU - Saturnio, A AU - De Marco, G AU - Tsotridis, G AD - Areonne National Laboratory, 9700 South Cass Avenue, Areonne, IL 60439, USA, ira.bloom@anl.gov Y1 - 2013/12/01/ PY - 2013 DA - 2013 Dec 01 SP - 451 EP - 457 PB - Elesevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 243 SN - 0378-7753, 0378-7753 KW - Sustainability Science Abstracts KW - Fuel technology KW - Energy efficiency KW - USA KW - European Union KW - Case studies KW - Energy KW - Commissions KW - Aging KW - Standards KW - Sustainability KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1443375966?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Power+Sources&rft.atitle=A+comparison+of+Fuel+Cell+Testing+protocols-A+case+study%3A+Protocols+used+by+the+U.S.+Department+of+Energy%2C+European+Union%2C+International+Electrotechnical+Commission%2FFuel+Cell+Testing+and+Standardization+Network%2C+and+Fuel+Cell+Technical+Team&rft.au=Bloom%2C+I%3BWalker%2C+L+K%3BBasco%2C+J+K%3BMalkow%2C+T%3BSaturnio%2C+A%3BDe+Marco%2C+G%3BTsotridis%2C+G&rft.aulast=Bloom&rft.aufirst=I&rft.date=2013-12-01&rft.volume=243&rft.issue=&rft.spage=451&rft.isbn=&rft.btitle=&rft.title=Journal+of+Power+Sources&rft.issn=03787753&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-01 N1 - Last updated - 2015-03-20 N1 - SubjectsTermNotLitGenreText - Energy efficiency; Fuel technology; Case studies; European Union; Energy; Aging; Commissions; Standards; Sustainability; USA ER -