TY - JOUR T1 - Highly Porous Thermoelectric Nanocomposites with Low Thermal Conductivity and High Figure of Merit from Large-Scale Solution-Synthesized Bi2 Te2.5 Se0.5 Hollow Nanostructures. AN - 1858105346; 28079961 AB - To enhance the performance of thermoelectric materials and enable access to their widespread applications, it is beneficial yet challenging to synthesize hollow nanostructures in large quantities, with high porosity, low thermal conductivity (κ) and excellent figure of merit (z T). Herein we report a scalable (ca. 11.0 g per batch) and low-temperature colloidal processing route for Bi2 Te2.5 Se0.5 hollow nanostructures. They are sintered into porous, bulk nanocomposites (phi 10 mm×h 10 mm) with low κ (0.48 W m-1  K-1 ) and the highest z T (1.18) among state-of-the-art Bi2 Te3-x Sex materilas. Additional benefits of the unprecedented low relative density (68-77 %) are the large demand reduction of raw materials and the improved portability. This method can be adopted to fabricate other porous phase-transition and thermoelectric chalcogenide materials and will pave the way for the implementation of hollow nanostructures in other fields. JF - Angewandte Chemie (International ed. in English) AU - Xu, Biao AU - Feng, Tianli AU - Agne, Matthias T AU - Zhou, Lin AU - Ruan, Xiulin AU - Snyder, G Jeffery AU - Wu, Yue AD - Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, 50011, USA. ; Department of Mechanical Engineering, Purdue University, West Lafayette, IN, 47907, USA. ; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA. ; Ames Laboratory, Department of Energy, Ames, IA, 50011, USA. Y1 - 2017/01/12/ PY - 2017 DA - 2017 Jan 12 KW - Kirkendall effect KW - thermal conductivity KW - thermoelectric materials KW - porous nanocomposites KW - hollow nanostructures UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1858105346?accountid=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=Highly+Porous+Thermoelectric+Nanocomposites+with+Low+Thermal+Conductivity+and+High+Figure+of+Merit+from+Large-Scale+Solution-Synthesized+Bi2+Te2.5+Se0.5+Hollow+Nanostructures.&rft.au=Xu%2C+Biao%3BFeng%2C+Tianli%3BAgne%2C+Matthias+T%3BZhou%2C+Lin%3BRuan%2C+Xiulin%3BSnyder%2C+G+Jeffery%3BWu%2C+Yue&rft.aulast=Xu&rft.aufirst=Biao&rft.date=2017-01-12&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Angewandte+Chemie+%28International+ed.+in+English%29&rft.issn=1521-3773&rft_id=info:doi/10.1002%2Fanie.201612041 LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2017-01-12 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1002/anie.201612041 ER - TY - JOUR T1 - Interplay between surface and surface resonance states on height selective stability of fcc Dy(111) film at nanoscale. AN - 1837026237; 27819082 AB - Using first-principles calculations we show that face-centered cubic Dy(111) ultrathin films exhibit height selective stability. The origin of such height selection can be attributed to the interplay between the localized surface states and surface resonance states due to electron confinement effects. Such effect could be utilized to manipulate the film thickness at the atomic level to achieve desirable film properties or to control the growth of nanostructures on the thin film for various applications. JF - Physical chemistry chemical physics : PCCP AU - Liu, Xiaojie AU - Wang, Cai-Zhuang AU - Hupalo, Myron AU - Ho, Kai-Ming AU - Thiel, Patricia A AU - Tringides, Michael C AD - Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun, 130117, China. ; Ames Laboratory - U. S. Department of Energy, and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA. wangcz@ameslab.gov. ; Ames Laboratory - U. S. Department of Energy, Department of Chemistry and Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA. Y1 - 2016/11/16/ PY - 2016 DA - 2016 Nov 16 SP - 31238 EP - 31243 VL - 18 IS - 45 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837026237?accountid=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=Interplay+between+surface+and+surface+resonance+states+on+height+selective+stability+of+fcc+Dy%28111%29+film+at+nanoscale.&rft.au=Liu%2C+Xiaojie%3BWang%2C+Cai-Zhuang%3BHupalo%2C+Myron%3BHo%2C+Kai-Ming%3BThiel%2C+Patricia+A%3BTringides%2C+Michael+C&rft.aulast=Liu&rft.aufirst=Xiaojie&rft.date=2016-11-16&rft.volume=18&rft.issue=45&rft.spage=31238&rft.isbn=&rft.btitle=&rft.title=Physical+chemistry+chemical+physics+%3A+PCCP&rft.issn=1463-9084&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date created - 2016-11-07 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 ER - TY - JOUR T1 - Solvent- and catalyst-free mechanochemical synthesis of alkali metal monohydrides AN - 1811881685; PQ0003552871 AB - Alkali metal monohydrides, AH (A = Li-Cs) have been synthesized in quantitative yields at room temperature by reactive milling of alkali metals in the presence of hydrogen gas at 200 bar or less. The mechanochemical approach reported here eliminates problems associated with the malleability of alkali metals - especially Li, Na, and K - and promotes effective solid-gas reactions, ensuring their completion. This is achieved by incorporating a certain volume fraction of the corresponding hydride powder as a process control agent, which allows continuous and efficient milling primarily by coating the surface of metal particles, effectively blocking cold welding. Formation of high-purity crystalline monohydrides has been confirmed by powder X-ray diffraction, solid-state NMR spectroscopy, and volumetric analyses of reactively desorbed H2 from as-milled samples. The proposed synthesis method is scalable and particularly effective for extremely air-sensitive materials, such as alkali and alkaline earth metal hydrides. The technique may also be favorable for production in continuous reactors operating at room temperature, thereby reducing the total processing time, energy consumption and, hence, the cost of production of these hydrides or their derivatives and composites. JF - Journal of materials chemistry. A, Materials for energy and sustainability AU - Hlova, Ihor Z AU - Castle, Andra AU - Goldston, Jennifer F AU - Gupta, Shalabh AU - Prost, Timothy AU - Kobayashi, Takeshi AU - Scott Chumbley, L AU - Pruski, Marek AU - Pecharsky, Vitalij K AD - Ames Laboratory; Iowa State University; Ames; IA 500011-3020; USA Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 12188 EP - 12196 PB - Royal Society of Chemistry VL - 4 IS - 31 SN - 2050-7488, 2050-7488 KW - Environment Abstracts KW - Volumetric analysis KW - Metals KW - Temperature KW - Energy consumption KW - Particulates KW - Hydrogen KW - Spectroscopy KW - X-ray diffraction KW - Alkali metals KW - Sustainability KW - Energy KW - Welding KW - NMR KW - Coatings KW - ENA 03:Energy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811881685?accountid=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=Solvent-+and+catalyst-free+mechanochemical+synthesis+of+alkali+metal+monohydrides&rft.au=Hlova%2C+Ihor+Z%3BCastle%2C+Andra%3BGoldston%2C+Jennifer+F%3BGupta%2C+Shalabh%3BProst%2C+Timothy%3BKobayashi%2C+Takeshi%3BScott+Chumbley%2C+L%3BPruski%2C+Marek%3BPecharsky%2C+Vitalij+K&rft.aulast=Hlova&rft.aufirst=Ihor&rft.date=2016-08-01&rft.volume=4&rft.issue=31&rft.spage=12188&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%2Fc6ta04391g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Number of references - 25 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - Volumetric analysis; Metals; Temperature; Hydrogen; Particulates; Energy consumption; Alkali metals; X-ray diffraction; Spectroscopy; Sustainability; Energy; Welding; NMR; Coatings DO - http://dx.doi.org/10.1039/c6ta04391g ER - TY - JOUR T1 - Haploid differentiation in maize kernels based on fluorescence imaging AN - 1811880762; PQ0003550129 AB - A new fluorescence-based method for inbred haploid differentiation in maize kernels was developed by utilizing the R1-nj colour marker in combination with fluorescence microspectroscopy and imaging. Seven inbred lines with varying R1-nj expression were used in this study. The fluorescence response of the diploid kernels at the embryonic dye spot was shown to simultaneously exhibit lower intensity and occur at a higher wavelength than the fluorescence of the dye-lacking haploid embryos. Intensity and area thresholds were applied to fluorescence images to sort the haploids from mixed sample populations, and sorting efficiencies of greater than 80% were achieved in all seven inbred lines (with values greater than 90% for five lines). The potential for high-throughput sorting when fluorescence imaging is combined with existing technologies for seed handling as well as high sorting efficiency may make fluorescence a viable and promising alternative to current sorting methods for some inbred lines. JF - Plant Breeding/Zeitschrift fuer Pflanzenzuchtung AU - Boote, Brett W AU - Freppon, Daniel J AU - De La Fuente, Gerald N AU - Luebberstedt, Thomas AU - Nikolau, Basil J AU - Smith, Emily A AD - The Ames Laboratory, U.S. Department of Energy, and Department of Chemistry, Iowa State University, Ames, IA, 50011-3111, USA. Y1 - 2016/08// PY - 2016 DA - August 2016 SP - 439 EP - 445 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 135 IS - 4 SN - 0179-9541, 0179-9541 KW - Genetics Abstracts; Biotechnology and Bioengineering Abstracts KW - Differentiation KW - Seeds KW - Fluorescence KW - Diploids KW - Zea mays KW - Plant breeding KW - Kernels KW - Inbreeding KW - Embryos KW - Wavelength KW - imaging KW - W 30910:Imaging KW - G 07800:Plants and Algae UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1811880762?accountid=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=Plant+Breeding%2FZeitschrift+fuer+Pflanzenzuchtung&rft.atitle=Haploid+differentiation+in+maize+kernels+based+on+fluorescence+imaging&rft.au=Boote%2C+Brett+W%3BFreppon%2C+Daniel+J%3BDe+La+Fuente%2C+Gerald+N%3BLuebberstedt%2C+Thomas%3BNikolau%2C+Basil+J%3BSmith%2C+Emily+A&rft.aulast=Boote&rft.aufirst=Brett&rft.date=2016-08-01&rft.volume=135&rft.issue=4&rft.spage=439&rft.isbn=&rft.btitle=&rft.title=Plant+Breeding%2FZeitschrift+fuer+Pflanzenzuchtung&rft.issn=01799541&rft_id=info:doi/10.1111%2Fpbr.12382 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-08-01 N1 - Last updated - 2016-09-01 N1 - SubjectsTermNotLitGenreText - Differentiation; Seeds; Fluorescence; Diploids; Plant breeding; Kernels; Embryos; Inbreeding; Wavelength; imaging; Zea mays DO - http://dx.doi.org/10.1111/pbr.12382 ER - TY - JOUR T1 - The Dynamic Nature of Resource Availability: The Cases of Copper and Rare Earths AN - 1861078133; 784673-17 AB - "Resources are not, they become" is how E.W. Zimmerman [1] described the dynamic nature of resource availability. In a physical sense, minerals and metals in the earth's crust, as well as those embodied in in-use and discarded products, are fixed in size or quantity. They are a fixed stock. In an economic sense, however, mineral and metal resources are anything but fixed. They become available-or are removed from availability-as a result of human activity, which in turn is a function of economic, social, environmental and political factors. This paper reviews the history of resource development for copper, a metal with a long history of human use, and rare earths, a family of metals that has seen widespread use only in the last half century. The paper places special focus on how society has responded to periodic concerns about resource shortages and the implications for future resource availability. JF - International Geological Congress, Abstracts = Congres Geologique International, Resumes AU - Eggert, R G AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 EP - Abstract 3048 PB - [International Geological Congress], [location varies] VL - 35 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1861078133?accountid=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+Geological+Congress%2C+Abstracts+%3D+Congres+Geologique+International%2C+Resumes&rft.atitle=The+Dynamic+Nature+of+Resource+Availability%3A+The+Cases+of+Copper+and+Rare+Earths&rft.au=Eggert%2C+R+G%3BAnonymous&rft.aulast=Eggert&rft.aufirst=R&rft.date=2016-01-01&rft.volume=35&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=International+Geological+Congress%2C+Abstracts+%3D+Congres+Geologique+International%2C+Resumes&rft.issn=&rft_id=info:doi/ L2 - http://www.americangeosciences.org/sites/default/files/igc/3048.pdf LA - English DB - GeoRef N1 - Conference title - 35th international geological congress 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 International Geological Congress Organizational Committee N1 - Last updated - 2017-01-24 N1 - CODEN - IGABBY ER - TY - JOUR T1 - Rare Earths: Market Disruption, Innovation, and Global Supply Chains AN - 1837292600; PQ0003781763 AB - Rare earths, sometimes called the vitamins of modern materials, captured public attention when their prices increased more than tenfold in 2010 and 2011. As prices fell between 2011 and 2016, rare earths receded from public view, but less visibly, they became a major focus of innovative activity in companies, government laboratories, and universities. Geoscientists worked to better understand the resource base and improve our knowledge about mineral deposits that can be mines in the future. Process engineers carried out research that is making primary production and recycling more efficient. Materials scientists and engineers searched for substitutes that require fewer or no rare earths while providing properties comparable or superior to those of existing materials. As a result, even though global supply chains are not significantly different now than they were before the market disruption, the innovative activity motivated by the disruption will likely have far-reaching, if unpredictable, consequences for supply chains of rare earths in the future. JF - Annual Review of Environment and Resources AU - Eggert, Roderick AU - Wadia, Cyrus AU - Anderson, Corby AU - Bauer, Diana AU - Fields, Fletcher AU - Meinert, Lawrence AU - Taylor, Patrick AD - Colorado School of Mines, Golden, Colorado 80401, and Critical Materials Institute, reggert@mines.edu Y1 - 2016///0, PY - 2016 DA - 0, 2016 SP - 199 EP - 222 PB - Annual Reviews, Inc., 4139 El Camino Way Palo Alto CA 94303-0139 United States VL - 41 SN - 1543-5938, 1543-5938 KW - Environment Abstracts; Meteorological & Geoastrophysical Abstracts KW - lanthanides KW - extractive metallurgy KW - material substitution KW - recycling KW - Vitamins KW - Recycling KW - Mines KW - Minerals KW - Primary production KW - Innovations KW - Waste management KW - ENA 17:Waste Management-Solid KW - M2 551.5:General (551.5) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1837292600?accountid=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=Annual+Review+of+Environment+and+Resources&rft.atitle=Rare+Earths%3A+Market+Disruption%2C+Innovation%2C+and+Global+Supply+Chains&rft.au=Eggert%2C+Roderick%3BWadia%2C+Cyrus%3BAnderson%2C+Corby%3BBauer%2C+Diana%3BFields%2C+Fletcher%3BMeinert%2C+Lawrence%3BTaylor%2C+Patrick&rft.aulast=Eggert&rft.aufirst=Roderick&rft.date=2016-01-01&rft.volume=41&rft.issue=&rft.spage=199&rft.isbn=&rft.btitle=&rft.title=Annual+Review+of+Environment+and+Resources&rft.issn=15435938&rft_id=info:doi/10.1146%2Fannurev-environ-110615-085700 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-11-01 N1 - Last updated - 2016-11-23 N1 - SubjectsTermNotLitGenreText - Primary production; Vitamins; Mines; Recycling; Minerals; Waste management; Innovations DO - http://dx.doi.org/10.1146/annurev-environ-110615-085700 ER - TY - JOUR T1 - Challenges and Opportunities in the Extraction of Rare Earths AN - 1832633178; 782761-23 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - King, Alexander H AU - Anonymous Y1 - 2016 PY - 2016 DA - 2016 SP - 1523 PB - Goldschmidt Conference, [varies] VL - 26 SN - 1042-7287, 1042-7287 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1832633178?accountid=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=Challenges+and+Opportunities+in+the+Extraction+of+Rare+Earths&rft.au=King%2C+Alexander+H%3BAnonymous&rft.aulast=King&rft.aufirst=Alexander&rft.date=2016-01-01&rft.volume=26&rft.issue=&rft.spage=1523&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/1523.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 - An inorganic capping strategy for the seeded growth of versatile bimetallic nanostructures. AN - 1721353028; 26399612 AB - Metal nanostructures have attracted great attention in various fields due to their tunable properties through precisely tailored sizes, compositions and structures. Using mesoporous silica (mSiO2) as the inorganic capping agent and encapsulated Pt nanoparticles as the seeds, we developed a robust seeded growth method to prepare uniform bimetallic nanoparticles encapsulated in mesoporous silica shells (PtM@mSiO2, M = Pd, Rh, Ni and Cu). Unexpectedly, we found that the inorganic silica shell is able to accommodate an eight-fold volume increase in the metallic core by reducing its thickness. The bimetallic nanoparticles encapsulated in mesoporous silica shells showed enhanced catalytic properties and thermal stabilities compared with those prepared with organic capping agents. This inorganic capping strategy could find a broad application in the synthesis of versatile bimetallic nanostructures with exceptional structural control and enhanced catalytic properties. JF - Nanoscale AU - Pei, Yuchen AU - Maligal-Ganesh, Raghu V AU - Xiao, Chaoxian AU - Goh, Tian-Wei AU - Brashler, Kyle AU - Gustafson, Jeffrey A AU - Huang, Wenyu AD - Department of Chemistry, Iowa State University, Ames Laboratory, U.S. Department of Energy, Ames, 50011, USA. whuang@iastate.edu. Y1 - 2015/10/28/ PY - 2015 DA - 2015 Oct 28 SP - 16721 EP - 16728 VL - 7 IS - 40 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1721353028?accountid=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=An+inorganic+capping+strategy+for+the+seeded+growth+of+versatile+bimetallic+nanostructures.&rft.au=Pei%2C+Yuchen%3BMaligal-Ganesh%2C+Raghu+V%3BXiao%2C+Chaoxian%3BGoh%2C+Tian-Wei%3BBrashler%2C+Kyle%3BGustafson%2C+Jeffrey+A%3BHuang%2C+Wenyu&rft.aulast=Pei&rft.aufirst=Yuchen&rft.date=2015-10-28&rft.volume=7&rft.issue=40&rft.spage=16721&rft.isbn=&rft.btitle=&rft.title=Nanoscale&rft.issn=2040-3372&rft_id=info:doi/10.1039%2Fc5nr04614a LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2016-01-29 N1 - Date created - 2015-10-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1039/c5nr04614a 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 - Doubly charged argide ion interferences in the ICPMS AN - 1777466548; 2016-030174 JF - V.M. Goldschmidt Conference - Program and Abstracts AU - Hattendorf, B AU - Gusmini, B AU - Dorta, L AU - Houk, R S AU - Reiher, M AU - Guenther, D AU - Anonymous Y1 - 2015 PY - 2015 DA - 2015 SP - 1202 PB - Goldschmidt Conference, [varies] VL - 25 SN - 1042-7287, 1042-7287 KW - alkaline earth metals KW - isotopes KW - copper KW - isotope ratios KW - mass spectra KW - Sr-88/Sr-86 KW - ions KW - stable isotopes KW - ICP mass spectra KW - metals KW - sulfur KW - Cu-65/Cu-63 KW - spectra KW - S-33/S-32 KW - strontium KW - 02D:Isotope geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466548?accountid=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=Doubly+charged+argide+ion+interferences+in+the+ICPMS&rft.au=Hattendorf%2C+B%3BGusmini%2C+B%3BDorta%2C+L%3BHouk%2C+R+S%3BReiher%2C+M%3BGuenther%2C+D%3BAnonymous&rft.aulast=Hattendorf&rft.aufirst=B&rft.date=2015-01-01&rft.volume=25&rft.issue=&rft.spage=1202&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/1202.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 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - alkaline earth metals; copper; Cu-65/Cu-63; ICP mass spectra; ions; isotope ratios; isotopes; mass spectra; metals; S-33/S-32; spectra; Sr-88/Sr-86; stable isotopes; strontium; sulfur ER - TY - CPAPER T1 - Restraint-Free Coarse-Grain Modeling of a Crystalline Cellulose Fibril Based on Force Matching T2 - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AN - 1627974171; 6312065 JF - 2014 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2014) AU - Markutsya, Sergiy AU - Devarajan, Ajitha AU - Gordon, Mark AU - Windus, Theresa AU - Lamm, Monica Y1 - 2014/11/16/ PY - 2014 DA - 2014 Nov 16 KW - Cellulose KW - Fibrils UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1627974171?accountid=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=Restraint-Free+Coarse-Grain+Modeling+of+a+Crystalline+Cellulose+Fibril+Based+on+Force+Matching&rft.au=Markutsya%2C+Sergiy%3BDevarajan%2C+Ajitha%3BGordon%2C+Mark%3BWindus%2C+Theresa%3BLamm%2C+Monica&rft.aulast=Markutsya&rft.aufirst=Sergiy&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 - High angular-resolution automated visible-wavelength scanning angle Raman microscopy AN - 1762369171; PQ0002462555 AB - A scanning angle (SA) Raman microscope with 532-nm excitation is reported for probing chemical content perpendicular to a sample interface. The instrument is fully automated to collect Raman spectra across a range of incident angles from 20.50 to 79.50[degrees] with an angular spread of 0.4 + or - 0.2[degrees] and an angular uncertainty of 0.09[degrees]. Instrumental controls drive a rotational stage with a fixed axis of rotation relative to a prism-based sample interface mounted on an inverted microscope stage. Three benefits of SA Raman microscopy using visible wavelengths, compared to near infrared wavelengths are: (i) better surface sensitivity; (ii) increased signal due to the frequency to the fourth power dependence of the Raman signal, and the possibility for resonant enhancement; (iii) the need to scan a reduced angular range to shorten data collection times. These benefits were demonstrated with SA Raman measurements of thin polymer films of polystyrene or a diblock copolymer of polystyrene and poly(3-hexylthiophene-2,5-diyl). Thin film spectra were collected with a signal-to-noise ratio of 30 using a 0.25 s acquisition time. JF - Analytica Chimica Acta AU - Lesoine, Michael D AU - Bobbitt, Jonathan M AU - Zhu, Shaobin AU - Fang, Ning AU - Smith, Emily A AD - U.S. Department of Energy, Ames Laboratory, Ames, IA 50011, United States; Department of Chemistry, Iowa State University, 1605 Gilman Hall, Ames, IA 50011, United States, esmith1@iastate.edu Y1 - 2014/10/27/ PY - 2014 DA - 2014 Oct 27 SP - 61 EP - 66 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 848 SN - 0003-2670, 0003-2670 KW - Environment Abstracts KW - Raman spectroscopy KW - Raman instrumentation KW - Thin film measurement KW - P3HT diblock copolymer KW - Waveguide KW - Sensitivity KW - Data collection KW - Microscopy KW - Polymers KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1762369171?accountid=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=Analytica+Chimica+Acta&rft.atitle=High+angular-resolution+automated+visible-wavelength+scanning+angle+Raman+microscopy&rft.au=Lesoine%2C+Michael+D%3BBobbitt%2C+Jonathan+M%3BZhu%2C+Shaobin%3BFang%2C+Ning%3BSmith%2C+Emily+A&rft.aulast=Lesoine&rft.aufirst=Michael&rft.date=2014-10-27&rft.volume=848&rft.issue=&rft.spage=61&rft.isbn=&rft.btitle=&rft.title=Analytica+Chimica+Acta&rft.issn=00032670&rft_id=info:doi/10.1016%2Fj.aca.2014.07.040 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2016-02-01 N1 - Number of references - 33 N1 - Last updated - 2016-02-29 N1 - SubjectsTermNotLitGenreText - Sensitivity; Data collection; Microscopy; Polymers DO - http://dx.doi.org/10.1016/j.aca.2014.07.040 ER - TY - JOUR T1 - Nucleation of iron oxide nanoparticles mediated by Mms6 protein in situ. AN - 1564602771; 25162493 AB - Biomineralization proteins are widely used as templating agents in biomimetic synthesis of a variety of organic-inorganic nanostructures. However, the role of the protein in controlling the nucleation and growth of biomimetic particles is not well understood, because the mechanism of the bioinspired reaction is often deduced from ex situ analysis of the resultant nanoscale mineral phase. Here we report the direct visualization of biomimetic iron oxide nanoparticle nucleation mediated by an acidic bacterial recombinant protein, Mms6, during an in situ reaction induced by the controlled addition of sodium hydroxide to solution-phase Mms6 protein micelles incubated with ferric chloride. Using in situ liquid cell scanning transmission electron microscopy we observe the liquid iron prenucleation phase and nascent amorphous nanoparticles forming preferentially on the surface of protein micelles. Our results provide insight into the early steps of protein-mediated biomimetic nucleation of iron oxide and point to the importance of an extended protein surface during nanoparticle formation. JF - ACS nano AU - Kashyap, Sanjay AU - Woehl, Taylor J AU - Liu, Xunpei AU - Mallapragada, Surya K AU - Prozorov, Tanya AD - Ames Laboratory, U.S. Department of Energy , Ames, Iowa 50011, United States . Y1 - 2014/09/23/ PY - 2014 DA - 2014 Sep 23 SP - 9097 EP - 9106 VL - 8 IS - 9 KW - Bacterial Proteins KW - 0 KW - Ferric Compounds KW - Micelles KW - Minerals KW - Water KW - 059QF0KO0R KW - ferric oxide KW - 1K09F3G675 KW - Index Medicus KW - recombinant iron-binding protein KW - in situ TEM analysis KW - protein-mediated particle nucleation KW - Particle Size KW - Water -- chemistry KW - Biomimetics KW - Minerals -- metabolism KW - Surface Properties KW - Ferric Compounds -- chemistry KW - Bacterial Proteins -- metabolism KW - Ferric Compounds -- metabolism KW - Nanotechnology -- methods KW - Nanoparticles -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1564602771?accountid=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=Nucleation+of+iron+oxide+nanoparticles+mediated+by+Mms6+protein+in+situ.&rft.au=Kashyap%2C+Sanjay%3BWoehl%2C+Taylor+J%3BLiu%2C+Xunpei%3BMallapragada%2C+Surya+K%3BProzorov%2C+Tanya&rft.aulast=Kashyap&rft.aufirst=Sanjay&rft.date=2014-09-23&rft.volume=8&rft.issue=9&rft.spage=9097&rft.isbn=&rft.btitle=&rft.title=ACS+nano&rft.issn=1936-086X&rft_id=info:doi/10.1021%2Fnn502551y LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-10-12 N1 - Date created - 2014-09-23 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1021/nn502551y ER - TY - JOUR T1 - Manganese incorporation into the magnetosome magnetite; magnetic signature of doping AN - 1612267989; 2014-082808 AB - The biomineralization of magnetotactic bacterial magnetite nanoparticles is a topic of intense research due to the particles" narrow size distribution and magnetic properties. Incorporation of foreign metal ions into the crystal matrix of magnetotactic bacterial magnetite has been previously examined by a number of investigators. In this study, cells of a magnetotactic bacterium, Magnetospirillum gryphiswaldense strain MSR-1 were grown in the presence of manganese, ruthenium, zinc and vanadium, of which only manganese was incorporated within the magnetosome magnetite crystals. We demonstrate that the magnetic properties of magnetite crystals of magnetotactic bacteria can be significantly altered by the incorporation of metal ions, other than iron, in the crystal structure. The Verwey transition serves as a unique marker to probe the incorporation of the dopant within the magnetosome: manganese incorporation into the magnetite nanocrystals is signaled by a suppression of the Verwey transition, as well as by changes in the crystalline structure and chemical composition of magnetosome magnetite. JF - European Journal of Mineralogy AU - Prozorov, Tanya AU - Perez-Gonzalez, Teresa AU - Valverde-Tercedor, Carmen AU - Jimenez-Lopez, Concepcion AU - Yebra-Rodriguez, Africa AU - Koernig, Andre AU - Faivre, Damien AU - Mallapragada, Surya K AU - Howse, Paul A AU - Bazylinski, Dennis A AU - Prozorov, Ruslan AU - Rodriguez-Navarro, Alejandro B AU - Schmahl, Wolfgang W AU - Prieto, Manuel Y1 - 2014/08// PY - 2014 DA - August 2014 SP - 457 EP - 471 PB - Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart VL - 26 IS - 4 SN - 0935-1221, 0935-1221 KW - zinc KW - magnetotactic bacteria KW - X-ray diffraction data KW - magnetization KW - crystal structure KW - platinum group KW - manganese KW - magnetosomes KW - temperature KW - magnetic properties KW - vanadium KW - oxides KW - spectra KW - X-ray photoelectron spectra KW - chemical composition KW - biomineralization KW - Verwey transition KW - impurities KW - Magnetospirillum Gryphiswaldense KW - X-ray spectra KW - TEM data KW - EDS spectra KW - Raman spectra KW - metals KW - bacteria KW - Magnetospirillum KW - ruthenium KW - nanoparticles KW - magnetite KW - 01C:Mineralogy of non-silicates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1612267989?accountid=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=European+Journal+of+Mineralogy&rft.atitle=Manganese+incorporation+into+the+magnetosome+magnetite%3B+magnetic+signature+of+doping&rft.au=Prozorov%2C+Tanya%3BPerez-Gonzalez%2C+Teresa%3BValverde-Tercedor%2C+Carmen%3BJimenez-Lopez%2C+Concepcion%3BYebra-Rodriguez%2C+Africa%3BKoernig%2C+Andre%3BFaivre%2C+Damien%3BMallapragada%2C+Surya+K%3BHowse%2C+Paul+A%3BBazylinski%2C+Dennis+A%3BProzorov%2C+Ruslan%3BRodriguez-Navarro%2C+Alejandro+B%3BSchmahl%2C+Wolfgang+W%3BPrieto%2C+Manuel&rft.aulast=Prozorov&rft.aufirst=Tanya&rft.date=2014-08-01&rft.volume=26&rft.issue=4&rft.spage=457&rft.isbn=&rft.btitle=&rft.title=European+Journal+of+Mineralogy&rft.issn=09351221&rft_id=info:doi/10.1127%2F0935-1221%2F2014%2F0026-2388 L2 - http://www.schweizerbart.de/j/ejm/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung | Reference includes data from GeoScienceWorld, Alexandria, VA, United States N1 - Date revised - 2014-01-01 N1 - Number of references - 95 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-10-16 N1 - SubjectsTermNotLitGenreText - bacteria; biomineralization; chemical composition; crystal structure; EDS spectra; impurities; magnetic properties; magnetite; magnetization; magnetosomes; Magnetospirillum; Magnetospirillum Gryphiswaldense; magnetotactic bacteria; manganese; metals; nanoparticles; oxides; platinum group; Raman spectra; ruthenium; spectra; TEM data; temperature; vanadium; Verwey transition; X-ray diffraction data; X-ray photoelectron spectra; X-ray spectra; zinc DO - http://dx.doi.org/10.1127/0935-1221/2014/0026-2388 ER - TY - JOUR T1 - Solvent-free mechanochemical synthesis of alane, AlH sub(3): effect of pressure on the reaction pathway AN - 1560139581; 20606933 AB - Nearly quantitative mechanochemical synthesis of non-solvated AlH sub(3) from lithium aluminium hydride (LiAlH sub(4)) and aluminium chloride (AlCl sub(3)) has been achieved at room temperature under reasonably low pressure of hydrogen (210 bar) or inert gas (125 bar for He or 90 bar for Ar). X-ray diffraction, solid-state super(27)Al NMR spectroscopy, and temperature programmed desorption analyses of as-milled materials reveal a nearly complete conversion of a 3 : 1 (molar) mixture of LiAlH sub(4) and AlCl sub(3) to a 4 : 3 (molar) mixture of AlH sub(3) and LiCl in ca. 30 min. By applying pressure of 210 bar or less (depending on the gas: hydrogen, helium, or argon), competing reactions leading to formation of metallic aluminium can be completely suppressed. X-ray diffraction and NMR analyses of products extracted at various stages of the mechanochemical reaction between LiAlH sub(4) and AlCl sub(3) reveal, for the first time, that the solid-state transformation proceeds with LiAlCl sub(4) as an intermediate. Evidently, the critical pressure required to suppress the formation of metallic aluminium depends on the rate at which mechanical energy is supplied during milling. For example, the critical pressure is reduced from 210 bar to 1 bar of hydrogen when the milling speed of a standard planetary mill is reduced from 300 rpm to 150 rpm, although at the expense of sluggish kinetics and much longer reaction time. JF - Green Chemistry AU - Gupta, S AU - Kobayashi, T AU - Hlova, I Z AU - Goldston, J F AU - Pruski, M AU - Pecharsky, V K AD - Ames Laboratory; Iowa State University; Ames; IA 500011-3020; USA; , shalabh@ameslab.gov Y1 - 2014/08// PY - 2014 DA - August 2014 SP - 4378 EP - 4388 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 16 IS - 9 SN - 1463-9262, 1463-9262 KW - Environment Abstracts; Sustainability Science Abstracts KW - Desorption KW - Chlorides KW - Temperature KW - Hydrogen KW - Spectroscopy KW - X-ray diffraction KW - Argon KW - Kinetics KW - Energy KW - Green development KW - Aluminum KW - Helium KW - NMR KW - Lithium KW - ENA 03:Energy KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1560139581?accountid=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=Green+Chemistry&rft.atitle=Solvent-free+mechanochemical+synthesis+of+alane%2C+AlH+sub%283%29%3A+effect+of+pressure+on+the+reaction+pathway&rft.au=Gupta%2C+S%3BKobayashi%2C+T%3BHlova%2C+I+Z%3BGoldston%2C+J+F%3BPruski%2C+M%3BPecharsky%2C+V+K&rft.aulast=Gupta&rft.aufirst=S&rft.date=2014-08-01&rft.volume=16&rft.issue=9&rft.spage=4378&rft.isbn=&rft.btitle=&rft.title=Green+Chemistry&rft.issn=14639262&rft_id=info:doi/10.1039%2Fc4gc00998c LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-09-01 N1 - Number of references - 35 N1 - Last updated - 2016-08-03 N1 - SubjectsTermNotLitGenreText - Desorption; Temperature; Chlorides; Hydrogen; X-ray diffraction; Spectroscopy; Argon; Energy; Kinetics; Aluminum; Green development; Helium; NMR; Lithium DO - http://dx.doi.org/10.1039/c4gc00998c ER - TY - JOUR T1 - High-resolution time-of-flight mass spectrometry fingerprinting of metabolites from cecum and distal colon contents of rats fed resistant starch AN - 1551040372; 19974686 AB - Time-of-flight mass spectrometry along with statistical analysis was utilized to study metabolic profiles among rats fed resistant starch (RS) diets. Fischer 344 rats were fed four starch diets consisting of 55 % (w/w, dbs) starch. A control starch diet consisting of com starch was compared against three RS diets. The RS diets were high-amylose corn starch (HA7), HA7 chemically modified with octenyl succinic anhydride, and stearic-acid-complexed HA7 starch. A sub-group received antibiotic treatment to determine if perturbations in the gut microbiome were long lasting. A second subgroup was treated with azoxymethane (AOM), a carcinogen. At the end of the 8-week study, cecal and distal colon content samples were collected from the sacrificed rats. Metabolites were extracted from cecal and distal colon samples into acetonitrile. The extracts were then analyzed on an accurate-mass time-of-flight mass spectrometer to obtain their metabolic profile. The data were analyzed using partial least-squares discriminant analysis (PLS-DA). The PLS-DA analysis utilized a training set and verification set to classify samples within diet and treatment groups. PLS-DA could reliably differentiate the diet treatments for both cecal and distal colon samples. The PLS-DA analyses of the antibiotic and no antibiotic-treated subgroups were well classified for cecal samples and modestly separated for distal colon samples. PLS-DA analysis had limited success separating distal colon samples for rats given AOM from those not treated; the cecal samples from AOM had very poor classification. Mass spectrometry profiling coupled with PLS-DA can readily classify metabolite differences among rats given RS diets. JF - Analytical and Bioanalytical Chemistry AU - Anderson, Timothy J AU - Jones, Roger W AU - Ai, Yongfeng AU - Houk, Robert S AU - Jane, Jay-lin AU - Zhao, Yinsheng AU - Birt, Diane F AU - McClelland, John F AD - Ames Laboratory-USDOE, Iowa State University, Ames, IA 50011, USA, timma@iastate.edu PY - 2014 SP - 745 EP - 756 PB - Springer Science+Business Media, Van Godewijckstraat 30 Dordrecht 3311 GX Netherlands VL - 406 IS - 3 SN - 1618-2642, 1618-2642 KW - Aqualine Abstracts; Water Resources Abstracts KW - Resistant starch KW - Mass spectrometry KW - Metabolites KW - PLS-DA KW - Diets KW - Mass Spectrometry KW - Antibiotics KW - Starch KW - Classification KW - Profiles KW - Corn KW - Statistical Analysis KW - AQ 00001:Water Resources and Supplies KW - SW 7010:Education - extramural UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1551040372?accountid=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=Analytical+and+Bioanalytical+Chemistry&rft.atitle=High-resolution+time-of-flight+mass+spectrometry+fingerprinting+of+metabolites+from+cecum+and+distal+colon+contents+of+rats+fed+resistant+starch&rft.au=Anderson%2C+Timothy+J%3BJones%2C+Roger+W%3BAi%2C+Yongfeng%3BHouk%2C+Robert+S%3BJane%2C+Jay-lin%3BZhao%2C+Yinsheng%3BBirt%2C+Diane+F%3BMcClelland%2C+John+F&rft.aulast=Anderson&rft.aufirst=Timothy&rft.date=2014-01-01&rft.volume=406&rft.issue=3&rft.spage=745&rft.isbn=&rft.btitle=&rft.title=Analytical+and+Bioanalytical+Chemistry&rft.issn=16182642&rft_id=info:doi/10.1007%2Fs00216-013-7523-8 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-12-01 N1 - Number of references - 56 N1 - Last updated - 2016-01-21 N1 - SubjectsTermNotLitGenreText - Diets; Mass Spectrometry; Classification; Profiles; Corn; Statistical Analysis; Antibiotics; Metabolites; Starch DO - http://dx.doi.org/10.1007/s00216-013-7523-8 ER - TY - JOUR T1 - Broadband terahertz generation from metamaterials. AN - 1490713874; 24402324 AB - The terahertz spectral regime, ranging from about 0.1-15 THz, is one of the least explored yet most technologically transformative spectral regions. One current challenge is to develop efficient and compact terahertz emitters/detectors with a broadband and gapless spectrum that can be tailored for various pump photon energies. Here we demonstrate efficient single-cycle broadband THz generation, ranging from about 0.1-4 THz, from a thin layer of split-ring resonators with few tens of nanometers thickness by pumping at the telecommunications wavelength of 1.5 μm (200 THz). The terahertz emission arises from exciting the magnetic-dipole resonance of the split-ring resonators and quickly decreases under off-resonance pumping. This, together with pump polarization dependence and power scaling of the terahertz emission, identifies the role of optically induced nonlinear currents in split-ring resonators. We also reveal a giant sheet nonlinear susceptibility ~10(-16) m(2) V(-1) that far exceeds thin films and bulk non-centrosymmetric materials. JF - Nature communications AU - Luo, Liang AU - Chatzakis, Ioannis AU - Wang, Jigang AU - Niesler, Fabian B P AU - Wegener, Martin AU - Koschny, Thomas AU - Soukoulis, Costas M AD - Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University, Ames, Iowa 50011, USA. ; 1] Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University, Ames, Iowa 50011, USA [2]. ; Institute of Applied Physics, Institute of Nanotechnology and DFG-Center for Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), 76128 Karlsruhe, Germany. ; 1] Department of Physics and Astronomy and Ames Laboratory-U.S. DOE, Iowa State University, Ames, Iowa 50011, USA [2] Institute of Electronic Structure and Lasers (IESL), FORTH, 71110 Heraklion, Crete, Greece. Y1 - 2014 PY - 2014 DA - 2014 SP - 3055 VL - 5 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490713874?accountid=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=Broadband+terahertz+generation+from+metamaterials.&rft.au=Luo%2C+Liang%3BChatzakis%2C+Ioannis%3BWang%2C+Jigang%3BNiesler%2C+Fabian+B+P%3BWegener%2C+Martin%3BKoschny%2C+Thomas%3BSoukoulis%2C+Costas+M&rft.aulast=Luo&rft.aufirst=Liang&rft.date=2014-01-01&rft.volume=5&rft.issue=&rft.spage=3055&rft.isbn=&rft.btitle=&rft.title=Nature+communications&rft.issn=2041-1723&rft_id=info:doi/10.1038%2Fncomms4055 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2015-04-13 N1 - Date created - 2014-01-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-23 DO - http://dx.doi.org/10.1038/ncomms4055 ER - TY - CPAPER T1 - Characterizing the Structure of Biomineralization Proteins Using Replica-Exchange Molecular Dynamics Simulations T2 - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AN - 1490521104; 6249594 JF - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AU - Arora, Pooja AU - Lamm, Monica Y1 - 2013/11/03/ PY - 2013 DA - 2013 Nov 03 KW - Simulation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490521104?accountid=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=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.atitle=Characterizing+the+Structure+of+Biomineralization+Proteins+Using+Replica-Exchange+Molecular+Dynamics+Simulations&rft.au=Arora%2C+Pooja%3BLamm%2C+Monica&rft.aulast=Arora&rft.aufirst=Pooja&rft.date=2013-11-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2013/webprogram/meeting2013-11-03.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Deriving Coarse-Grained Models for Crystalline Cellulose Based On Force Matching T2 - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AN - 1490514366; 6252252 JF - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AU - Markutsya, Sergiy AU - Devarajan, Ajitha AU - Gordon, Mark AU - Windus, Theresa AU - Lamm, Monica Y1 - 2013/11/03/ PY - 2013 DA - 2013 Nov 03 KW - Cellulose UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490514366?accountid=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=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.atitle=Deriving+Coarse-Grained+Models+for+Crystalline+Cellulose+Based+On+Force+Matching&rft.au=Markutsya%2C+Sergiy%3BDevarajan%2C+Ajitha%3BGordon%2C+Mark%3BWindus%2C+Theresa%3BLamm%2C+Monica&rft.aulast=Markutsya&rft.aufirst=Sergiy&rft.date=2013-11-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2013/webprogram/meeting2013-11-03.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - Extended Conditional Quadrature-Based Moment Method for Polydisperse Gas-Particle Flows With Size-Conditioned Velocity T2 - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AN - 1490514221; 6252154 JF - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AU - Kong, Bo AU - Passalacqua, Alberto AU - Fox, Rodney Y1 - 2013/11/03/ PY - 2013 DA - 2013 Nov 03 KW - Velocity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490514221?accountid=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=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.atitle=Extended+Conditional+Quadrature-Based+Moment+Method+for+Polydisperse+Gas-Particle+Flows+With+Size-Conditioned+Velocity&rft.au=Kong%2C+Bo%3BPassalacqua%2C+Alberto%3BFox%2C+Rodney&rft.aulast=Kong&rft.aufirst=Bo&rft.date=2013-11-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2013/webprogram/meeting2013-11-03.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - A Recent Advance in Modeling Dynamic Properties With Coarse-Grained Molecular Simulation T2 - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AN - 1490513785; 6250337 JF - 2013 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2013) AU - Markutsya, Sergiy AU - Lamm, Monica Y1 - 2013/11/03/ PY - 2013 DA - 2013 Nov 03 KW - Simulation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1490513785?accountid=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=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.atitle=A+Recent+Advance+in+Modeling+Dynamic+Properties+With+Coarse-Grained+Molecular+Simulation&rft.au=Markutsya%2C+Sergiy%3BLamm%2C+Monica&rft.aulast=Markutsya&rft.aufirst=Sergiy&rft.date=2013-11-03&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2013+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2013%29&rft.issn=&rft_id=info:doi/ L2 - https://aiche.confex.com/aiche/2013/webprogram/meeting2013-11-03.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-11-30 N1 - Last updated - 2014-02-10 ER - TY - CPAPER T1 - The Critical Materials Institute T2 - 52nd Annual Conference of Metallurgists (COM 2013) AN - 1450170041; 6245033 JF - 52nd Annual Conference of Metallurgists (COM 2013) AU - King, Alexander Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Metallurgy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1450170041?accountid=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=52nd+Annual+Conference+of+Metallurgists+%28COM+2013%29&rft.atitle=The+Critical+Materials+Institute&rft.au=King%2C+Alexander&rft.aulast=King&rft.aufirst=Alexander&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=52nd+Annual+Conference+of+Metallurgists+%28COM+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.programmaster.org/PM/PM.nsf/SessionSheetView?OpenForm&ParentUNID=1C64FCABE1A1E644852576C30062C9E9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-31 N1 - Last updated - 2013-11-13 ER - TY - CPAPER T1 - Recycling of Rare Earth Elements for the Synthesis of Permanent Magnets Alloys T2 - 52nd Annual Conference of Metallurgists (COM 2013) AN - 1450168220; 6245069 JF - 52nd Annual Conference of Metallurgists (COM 2013) AU - Ott, Ryan AU - Jones, Lawrence AU - Dennis, Kevin AU - McCallum, R Y1 - 2013/10/27/ PY - 2013 DA - 2013 Oct 27 KW - Rare earths KW - Magnets KW - Alloys KW - alloys KW - Recycling KW - Rare earth elements KW - Waste management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1450168220?accountid=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=52nd+Annual+Conference+of+Metallurgists+%28COM+2013%29&rft.atitle=Recycling+of+Rare+Earth+Elements+for+the+Synthesis+of+Permanent+Magnets+Alloys&rft.au=Ott%2C+Ryan%3BJones%2C+Lawrence%3BDennis%2C+Kevin%3BMcCallum%2C+R&rft.aulast=Ott&rft.aufirst=Ryan&rft.date=2013-10-27&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=52nd+Annual+Conference+of+Metallurgists+%28COM+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://www.programmaster.org/PM/PM.nsf/SessionSheetView?OpenForm&ParentUNID=1C64FCABE1A1E644852576C30062C9E9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-31 N1 - Last updated - 2013-11-13 ER - TY - CPAPER T1 - Colored BaAl4-type derivatives in the Ba - Au - Sn system T2 - 48th Midwest Regional Meeting of the American Chemical Society (MWRM 2013) AN - 1450172474; 6245764 JF - 48th Midwest Regional Meeting of the American Chemical Society (MWRM 2013) AU - Lin, Qisheng Y1 - 2013/10/16/ PY - 2013 DA - 2013 Oct 16 KW - Chemical engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1450172474?accountid=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=48th+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2013%29&rft.atitle=Colored+BaAl4-type+derivatives+in+the+Ba+-+Au+-+Sn+system&rft.au=Lin%2C+Qisheng&rft.aulast=Lin&rft.aufirst=Qisheng&rft.date=2013-10-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=48th+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://abstracts.acs.org/chem/mwrm2013/program/divisionindex.php?act=session&val=223632&prog=223632 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-31 N1 - Last updated - 2013-11-13 ER - TY - CPAPER T1 - Super-resolution Imaging in Plant Cells T2 - 48th Midwest Regional Meeting of the American Chemical Society (MWRM 2013) AN - 1450171139; 6245676 JF - 48th Midwest Regional Meeting of the American Chemical Society (MWRM 2013) AU - Dong, Bin AU - Yang, Xiaochen AU - Zhu, Shaobin AU - Bassham, Diane AU - Fang, Ning Y1 - 2013/10/16/ PY - 2013 DA - 2013 Oct 16 KW - Plant cells KW - Imaging techniques UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1450171139?accountid=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=48th+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2013%29&rft.atitle=Super-resolution+Imaging+in+Plant+Cells&rft.au=Dong%2C+Bin%3BYang%2C+Xiaochen%3BZhu%2C+Shaobin%3BBassham%2C+Diane%3BFang%2C+Ning&rft.aulast=Dong&rft.aufirst=Bin&rft.date=2013-10-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=48th+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2013%29&rft.issn=&rft_id=info:doi/ L2 - http://abstracts.acs.org/chem/mwrm2013/program/divisionindex.php?act=session&val=223632&prog=223632 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-10-31 N1 - Last updated - 2013-11-13 ER - TY - JOUR T1 - The importance of advanced rare earth based materials to modern technology AN - 1553085224; 2014-064101 AB - The importance of advance rare earth materials to modern technology is difficult to overstate. They contribute to the sights, sounds, and odors (or lack there of) in our daily life. Our sight is impacted by the RE phosphors in fluorescence lights and in flat panel displays. Our ears are subjected to music from ear buds and speakers made possible by RE magnets and our nose is spared abuse from pollution by RE catalysts in automotive exhaust systems. The quantity of RE materials used in an application vary from micrograms for image enhancing agents for MRI, hundreds of milligrams for ear buds, grams for disk drives, kilograms for hybrid and electric vehicles, to metric tons in wind turbines. This talk will discuss what it is about RE elements that make them so important to such a broad range of applications. Critical applications and a few that are just fun will be discussed. JF - Abstracts with Programs - Geological Society of America AU - McCallum, R William AU - Anonymous Y1 - 2013 PY - 2013 DA - 2013 SP - 848 PB - Geological Society of America (GSA), Boulder, CO VL - 45 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/1553085224?accountid=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+importance+of+advanced+rare+earth+based+materials+to+modern+technology&rft.au=McCallum%2C+R+William%3BAnonymous&rft.aulast=McCallum&rft.aufirst=R&rft.date=2013-01-01&rft.volume=45&rft.issue=7&rft.spage=848&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/2013AM/webprogram/Paper227160.html LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 2013 annual meeting & exposition N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2014-01-01 N1 - PubXState - CO N1 - Last updated - 2014-08-14 N1 - CODEN - GAAPBC ER - TY - JOUR T1 - Fate of MgSiO3 post-perovskite under ultrahigh pressure AN - 1629945708; 2014-095548 AB - Understanding the behavior of MgSiO3 postperovskite (PPV) under extreme pressures is fundamental for modeling the interiors of solar giants and extrasolar planets. Previously, MgSiO3 PPV was predicted to dissociate into MgO and MgSi2O5 and then into MgO and SiO2 (Umemoto et al., Science 311, 983 (2006); Umemoto and Wentzcovitch, EPSL 311, 225 (2011)). Here, by using the adaptive genetic algorithm, we predict a new multi-stage dissociation path for MgSiO3 PPV. The phase diagram calculated by the quasi-harmonic approximation shows that this new dissociation can occur in some of super-Earths which have been discovered so far. We also study the potential effects of this multi-stage dissociation path on mantle convection of super-Earths. JF - American Geophysical Union Fall Meeting AU - van den Berg, A AU - Umemoto, K AU - Wu, S AU - Ji, M AU - Wang, C AU - Ho, K AU - Yuen, D A AU - Wentzcovitch, R M AU - Anonymous Y1 - 2012/12// PY - 2012 DA - December 2012 SP - Abstract DI51B EP - 07 PB - American Geophysical Union, Washington, DC VL - 2012 KW - 17B:Geophysics of minerals and rocks UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1629945708?accountid=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=Fate+of+MgSiO3+post-perovskite+under+ultrahigh+pressure&rft.au=van+den+Berg%2C+A%3BUmemoto%2C+K%3BWu%2C+S%3BJi%2C+M%3BWang%2C+C%3BHo%2C+K%3BYuen%2C+D+A%3BWentzcovitch%2C+R+M%3BAnonymous&rft.aulast=van+den+Berg&rft.aufirst=A&rft.date=2012-12-01&rft.volume=2012&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 2012 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 - 2014-12-04 N1 - CODEN - #07548 ER - TY - JOUR T1 - Adaptive genetic algorithm method for crystal structure prediction AN - 1618133264; 2014-085925 AB - We have developed a fast and efficient method for crystal structure prediction and materials discovery. This method performs genetic algorithm (GA) searches using auxiliary classical potentials to screen the energies of candidate structures, and select only a few of them for more extensive first-principles evaluation. Parameters of the auxiliary potentials are adaptively adjusted to reproduce the first-principles results during the course of the GA search. Therefore, the adaptive GA method can combine the speed of empirical potential searches with the accuracy of first-principles calculations. The efficiency of the adaptive GA method allows for great increase in the size and complexity of systems that can be studied. The performance of adaptive GA is demonstrated by application to various systems including metallic alloys and ultrahigh pressure SiO2, H2O and Mg-Si-O systems. JF - American Geophysical Union Fall Meeting AU - Wang, C AU - Wu, S AU - Ji, M AU - Nguyen, M AU - Zhao, X AU - Umemoto, K AU - Wentzcovitch, R M AU - Ho, K AU - Anonymous Y1 - 2012/12// PY - 2012 DA - December 2012 SP - Abstract MR43A EP - 2299 PB - American Geophysical Union, Washington, DC VL - 2012 KW - 01A:General mineralogy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1618133264?accountid=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=Adaptive+genetic+algorithm+method+for+crystal+structure+prediction&rft.au=Wang%2C+C%3BWu%2C+S%3BJi%2C+M%3BNguyen%2C+M%3BZhao%2C+X%3BUmemoto%2C+K%3BWentzcovitch%2C+R+M%3BHo%2C+K%3BAnonymous&rft.aulast=Wang&rft.aufirst=C&rft.date=2012-12-01&rft.volume=2012&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 2012 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 - 2014-10-30 N1 - CODEN - #07548 ER - TY - JOUR T1 - Metals on graphene: correlation between adatom adsorption behavior and growth morphology. AN - 1020047042; 22641290 AB - We present a systematic study of metal adatom adsorption on graphene by ab initio calculations. The calculations cover alkali metals, sp-simple metals, 3d and group 10 transition metals, noble metals, as well as rare earth metals. The correlation between the adatom adsorption properties and the growth morphology of the metals on graphene is also investigated. We show that the growth morphology is related to the ratio of the metal adsorption energy to its bulk cohesive energy (E(a)/E(c)) and the diffusion barrier (ΔE) of the metal adatom on graphene. Charge transfer, electric dipole and magnetic moments, and graphene lattice distortion induced by metal adsorption would also affect the growth morphologies of the metal islands. We also show that most of the metal nanostructures on graphene would be thermally stable against coarsening. JF - Physical chemistry chemical physics : PCCP AU - Liu, Xiaojie AU - Wang, C Z AU - Hupalo, M AU - Lu, W C AU - Tringides, M C AU - Yao, Y X AU - Ho, K M AD - Ames Laboratory-U. S. Department of Energy, Ames, IA 50011, USA. Y1 - 2012/07/07/ PY - 2012 DA - 2012 Jul 07 SP - 9157 EP - 9166 VL - 14 IS - 25 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1020047042?accountid=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=Metals+on+graphene%3A+correlation+between+adatom+adsorption+behavior+and+growth+morphology.&rft.au=Liu%2C+Xiaojie%3BWang%2C+C+Z%3BHupalo%2C+M%3BLu%2C+W+C%3BTringides%2C+M+C%3BYao%2C+Y+X%3BHo%2C+K+M&rft.aulast=Liu&rft.aufirst=Xiaojie&rft.date=2012-07-07&rft.volume=14&rft.issue=25&rft.spage=9157&rft.isbn=&rft.btitle=&rft.title=Physical+chemistry+chemical+physics+%3A+PCCP&rft.issn=1463-9084&rft_id=info:doi/10.1039%2Fc2cp40527j LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2012-10-01 N1 - Date created - 2012-06-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 DO - http://dx.doi.org/10.1039/c2cp40527j ER - TY - JOUR T1 - Molecular Dynamics Study of Solid-Liquid Interface Migration in Ni-Zr Alloys AN - 1671455987; 18029155 AB - While several dozens of molecular dynamics (MD) simulation works reporting the solid-liquid interface (SLI) velocities in pure metals have been published the number of works where the SLI migration was studied in alloys is very limited. I will present the results of the MD simulations of the SLI migration in the Ni50Zr50 and NiZr2 alloys. The crystal phases in these alloys are congruently melting stochiometric compounds and a potential development procedure which allows fitting the melting temperatures for these compounds will be discussed. The developed semiempirical potential allows in the case of the Ni50Zr50 alloy the simulation of the SLI migration for both B2 and B33 phases. The temperature dependence and anisotropy of the SLI velocity and point defect formation during solidification will be discussed.Work at the Ames Laboratory was supported by the Department of Energy, Office of Basic Energy Sciences, under Contract No. DE-AC02-07CH1135. JF - AIP Conference Proceedings AU - Mendelev, Mikhail AD - Ames Laboratory Y1 - 2012/03/15/ PY - 2012 DA - 2012 Mar 15 PB - American Institute of Physics, Ste. 1NO1 Melville NY 11747-4502 United States SN - 0094-243X, 0094-243X KW - Solid State and Superconductivity Abstracts (SO); Environmental Engineering Abstracts (EN) KW - Melting KW - Phases KW - Fittings KW - Simulation KW - Molecular dynamics KW - Alloys KW - Offices KW - Migration UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1671455987?accountid=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=AIP+Conference+Proceedings&rft.atitle=Molecular+Dynamics+Study+of+Solid-Liquid+Interface+Migration+in+Ni-Zr+Alloys&rft.au=Mendelev%2C+Mikhail&rft.aulast=Mendelev&rft.aufirst=Mikhail&rft.date=2012-03-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=AIP+Conference+Proceedings&rft.issn=0094243X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-07-01 N1 - Last updated - 2015-04-09 ER - TY - JOUR T1 - Recovery of Rare Earth Metals via Liquid Metal Extraction AN - 1372609919; 18029497 AB - With the increased demand for rare earth (RE) metals in critical technologies coupled with supply concerns, recycling of RE metals has become increasingly more important. Here we describe utilizing liquid Mg to extract RE metals from magnetic scrap material. By utilizing induction melting of liquid Mg followed by vacuum distillation, we were able to recover >98% pure RE metal. From the recovered RE metals, we synthesized RE2Fe14B1-type magnetic alloys for comparison with alloys synthesized from pure RE metals. The magnetic properties and the microstructure of the alloys prepared from the two different starting materials are discussed. Lastly, we discuss the extraction of RE metals from oxidized samples. JF - AIP Conference Proceedings AU - Ott, Ryan AU - Cavanaugh, Dan AU - Straszheim, Warren AU - Kramer, Matthew AU - Jones, Larry AD - Ames Laboratory (USDOE) Y1 - 2012/03/15/ PY - 2012 DA - 2012 Mar 15 PB - American Institute of Physics, Ste. 1NO1 Melville NY 11747-4502 United States SN - 0094-243X, 0094-243X KW - Environment Abstracts KW - Metals KW - Magnetic properties KW - Conferences KW - Distillation KW - Alloys KW - Recycling KW - Technology KW - Waste management KW - ENA 17:Waste Management-Solid UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1372609919?accountid=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=conference&rft.jtitle=AIP+Conference+Proceedings&rft.atitle=Recovery+of+Rare+Earth+Metals+via+Liquid+Metal+Extraction&rft.au=Ott%2C+Ryan%3BCavanaugh%2C+Dan%3BStraszheim%2C+Warren%3BKramer%2C+Matthew%3BJones%2C+Larry&rft.aulast=Ott&rft.aufirst=Ryan&rft.date=2012-03-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=AIP+Conference+Proceedings&rft.issn=0094243X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2014-02-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Metals; Conferences; Magnetic properties; Distillation; Alloys; Recycling; Waste management; Technology ER - TY - JOUR T1 - Mass spectrometric imaging as a high-spatial resolution tool for functional genomics: Tissue-specific gene expression of TT7inferred from heterogeneous distribution of metabolites in Arabidopsisflowers AN - 1705049005; 16970518 AB - Laser desorption/ionization (LDI) mass spectrometry imaging (MSI) was used to acquire chemical images of flavonoid metabolites on the surface of wild-type and mutant (tt7) Arabidopsis thalianaflowers. Flavonoids were localized to the petals and carpels of flowers, with tissue heterogeneity in the petals. Specifically, kaempferol and/or its glycosides were abundant in the distal region of petals and quercetin and its downstream flavonoids were highly enriched in the more proximal region of petals. As a result of a mutation in the TT7gene which blocks the conversion of dihydrokaempferol to dihydroquercetin, the downstream metabolites, quercetin, isohamnetin, and their glycosides, were not observed in the mutant flowers. Instead, the metabolites in an alternative pathway, kaempferol and/or its glycosides, were as highly abundant on the proximal region of the petals as in the distal region. In addition, the combined flavonoid amounts on the proximal region of petals in the wild-type are almost equivalent to the amounts of kaempferol and/or its glycosides in the mutant. This strongly suggests that the expression of the TT7gene is localized on the proximal part of the petal while the other genes in the upper stream pathway are evenly expressed throughout the petal. Most importantly, this work demonstrates MSI of metabolites can be utilized for the localization of gene expression. JF - Analytical Methods AU - Korte, Andrew R AU - Song, Zhihong AU - Nikolau, Basil J AU - Lee, Young Jin AD - Ames Laboratory; U. S. Department of Energy; Ames; IA; 50011; USA; , yjlee@iastate.edu Y1 - 2012/02// PY - 2012 DA - February 2012 SP - 474 EP - 481 PB - Royal Society of Chemistry, c/o Springer-Verlag New York Inc. Secaucus New Jersey 07096 2485 United States VL - 4 IS - 2 SN - 1759-9660, 1759-9660 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Mass Spectrometry KW - Glycosides KW - Desorption KW - Mutations KW - Metabolites KW - Streams KW - Imaging techniques KW - Gene expression KW - Analytical Methods KW - Stream KW - Downstream KW - Lasers KW - Heterogeneity KW - Ionization KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1705049005?accountid=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=Analytical+Methods&rft.atitle=Mass+spectrometric+imaging+as+a+high-spatial+resolution+tool+for+functional+genomics%3A+Tissue-specific+gene+expression+of+TT7inferred+from+heterogeneous+distribution+of+metabolites+in+Arabidopsisflowers&rft.au=Korte%2C+Andrew+R%3BSong%2C+Zhihong%3BNikolau%2C+Basil+J%3BLee%2C+Young+Jin&rft.aulast=Korte&rft.aufirst=Andrew&rft.date=2012-02-01&rft.volume=4&rft.issue=2&rft.spage=474&rft.isbn=&rft.btitle=&rft.title=Analytical+Methods&rft.issn=17599660&rft_id=info:doi/10.1039%2Fc2ay05618f LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2015-08-01 N1 - Number of references - 35 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Gene expression; Glycosides; Mutations; Stream; Imaging techniques; Mass Spectrometry; Desorption; Analytical Methods; Lasers; Downstream; Metabolites; Ionization; Heterogeneity; Streams DO - http://dx.doi.org/10.1039/c2ay05618f ER - TY - CPAPER T1 - ICP-MS I: Introduction T2 - 2012 European Winter Conference on Plasma Spectrochemistry AN - 1313094197; 6107930 JF - 2012 European Winter Conference on Plasma Spectrochemistry AU - Houk, Sam Y1 - 2012/01/09/ PY - 2012 DA - 2012 Jan 09 KW - Plasma KW - Spectrochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1313094197?accountid=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=2012+European+Winter+Conference+on+Plasma+Spectrochemistry&rft.atitle=ICP-MS+I%3A+Introduction&rft.au=Houk%2C+Sam&rft.aulast=Houk&rft.aufirst=Sam&rft.date=2012-01-09&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2012+European+Winter+Conference+on+Plasma+Spectrochemistry&rft.issn=&rft_id=info:doi/ L2 - http://icpinformation.org/uploads/2012_Winter_Conference.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-02-26 N1 - Last updated - 2013-02-28 ER - TY - JOUR T1 - New ice phases under ultrahigh pressure AN - 1739086989; 2015-113637 AB - Ice X is the highest-pressure form of H (sub 2) O "ice" identified experimentally so far. Knowledge of phases beyond ice X is fundamental for modeling the interiors of icy solar giants (Uranus and Neptune) and icy exoplanets. Theoretically, Pbcm, Pbca, and Cmcm phases were proposed [Benoit et al, Phys. Rev. Lett. 76, 2934 (1996), Caracas, Phys. Rev. Lett. 101, 085502 (2008), Militzer and Wilson, Phys. Rev. Lett. 105, 195701 (2010)] as candidates for phases beyond ice X. Here we propose three new phases of H (sub 2) O under ultrahigh pressure using the adaptive genetic algorithm. Our calculations reveal that the new sequence of pressure-induced phase transitions should be: ice X --> Pbcm --> Pbca --> Pmc21 --> P21 --> P21/c phases. Contrary to previous prediction, all stable crystalline phases should have nonmetallic band structure up to 7 TPa. JF - American Geophysical Union Fall Meeting AU - Ji, M AU - Umemoto, K AU - Ho, K AU - Wang, C AU - Wentzcovitch, R M AU - Anonymous Y1 - 2011/12// PY - 2011 DA - December 2011 SP - Abstract MR23A EP - 2121 PB - American Geophysical Union, Washington, DC VL - 2011 KW - experimental studies KW - pressure KW - genetic algorithms KW - stability KW - phase transitions KW - high pressure KW - crystallinity KW - giant planets KW - ultrahigh pressure KW - planets KW - ice KW - planetary interiors KW - theoretical models KW - ice X KW - algorithms KW - 04:Extraterrestrial geology KW - 17A:General geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1739086989?accountid=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=New+ice+phases+under+ultrahigh+pressure&rft.au=Ji%2C+M%3BUmemoto%2C+K%3BHo%2C+K%3BWang%2C+C%3BWentzcovitch%2C+R+M%3BAnonymous&rft.aulast=Ji&rft.aufirst=M&rft.date=2011-12-01&rft.volume=2011&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 2011 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 N1 - SubjectsTermNotLitGenreText - algorithms; crystallinity; experimental studies; genetic algorithms; giant planets; high pressure; ice; ice X; phase transitions; planetary interiors; planets; pressure; stability; theoretical models; ultrahigh pressure ER - TY - JOUR T1 - Evaluation of nanoparticle-immobilized cellulase for improved ethanol yield in simultaneous saccharification and fermentation reactions AN - 1017963493; 16691779 AB - Ethanol yields were 2.1 (P=0.06) to 2.3 (P=0.01) times higher in simultaneous saccharification and fermentation (SSF) reactions of microcrystalline cellulose when cellulase was physisorbed on silica nanoparticles compared to enzyme in solution. In SSF reactions, cellulose is hydrolyzed to glucose by cellulase while yeast simultaneously ferments glucose to ethanol. The 35?C temperature and the presence of ethanol in SSF reactions are not optimal conditions for cellulase. Immobilization onto solid supports can stabilize the enzyme and promote activity at non-optimum reaction conditions. Mock SSF reactions that did not contain yeast were used to measure saccharification products and identify the mechanism for the improved ethanol yield using immobilized cellulase. Cellulase adsorbed to 40nm silica nanoparticles produced 1.6 times (P=0.01) more glucose than cellulase in solution in 96h at pH 4.8 and 35?C. There was no significant accumulation (<250?g) of soluble cellooligomers in either the solution or immobilized enzyme reactions. This suggests that the mechanism for the immobilized enzyme's improved glucose yield compared to solution enzyme is the increased conversion of insoluble cellulose hydrolysis products to soluble cellooligomers at 35?C and in the presence of ethanol. The results show that silica-immobilized cellulase can be used to produce increased ethanol yields in the conversion of lignocellulosic materials by SSF. Biotechnol. Bioeng. 2011; 108: 2835-2843. ? 2011 Wiley Periodicals, Inc. JF - Biotechnology and Bioengineering AU - Lupoi, Jason S AU - Smith, Emily A AD - U.S. Department of Energy, Ames Laboratory, Ames, Iowa, 50011, esmith1@iastate.edu Y1 - 2011/12// PY - 2011 DA - Dec 2011 SP - 2835 EP - 2843 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 108 IS - 12 SN - 1097-0290, 1097-0290 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Biotechnology and Bioengineering Abstracts KW - Temperature effects KW - Fermentation KW - Immobilized enzymes KW - Cellulose KW - Glucose KW - Enzymes KW - Hydrolysis KW - Cellulase KW - Silica KW - pH effects KW - nanoparticles KW - Immobilization KW - Ethanol KW - A 01330:Food Microbiology KW - W 30945:Fermentation & Cell Culture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1017963493?accountid=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=Biotechnology+and+Bioengineering&rft.atitle=Evaluation+of+nanoparticle-immobilized+cellulase+for+improved+ethanol+yield+in+simultaneous+saccharification+and+fermentation+reactions&rft.au=Lupoi%2C+Jason+S%3BSmith%2C+Emily+A&rft.aulast=Lupoi&rft.aufirst=Jason&rft.date=2011-12-01&rft.volume=108&rft.issue=12&rft.spage=2835&rft.isbn=&rft.btitle=&rft.title=Biotechnology+and+Bioengineering&rft.issn=10970290&rft_id=info:doi/10.1002%2Fbit.23246 L2 - http://onlinelibrary.wiley.com/doi/10.1002/bit.23246/abstract LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-05-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Temperature effects; Fermentation; Cellulose; Immobilized enzymes; Glucose; Enzymes; Hydrolysis; Cellulase; Silica; nanoparticles; pH effects; Immobilization; Ethanol DO - http://dx.doi.org/10.1002/bit.23246 ER - TY - CPAPER T1 - Photonic Metamaterials: Challenges and Oppurtunities T2 - 2011 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2011) AN - 1312924211; 6079561 JF - 2011 Annual Meeting of the American Institute for Chemical Engineering (AIChE 2011) AU - Soukoulis, Costas Y1 - 2011/10/16/ PY - 2011 DA - 2011 Oct 16 KW - Chemical engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1312924211?accountid=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=2011+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2011%29&rft.atitle=Photonic+Metamaterials%3A+Challenges+and+Oppurtunities&rft.au=Soukoulis%2C+Costas&rft.aulast=Soukoulis&rft.aufirst=Costas&rft.date=2011-10-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2011+Annual+Meeting+of+the+American+Institute+for+Chemical+Engineering+%28AIChE+2011%29&rft.issn=&rft_id=info:doi/ L2 - http://www.aiche.org/conferences/annualmeeting/meetingprogram/2011topical.aspx LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2013-02-26 N1 - Last updated - 2013-02-28 ER - TY - JOUR T1 - Surfactant-assisted controlled release of hydrophobic drugs using anionic surfactant templated mesoporous silica nanoparticles AN - 883026574; 15209281 AB - A series of mesoporous silica nanoparticles (MSNs) were synthesized using the co-structure directing method. A non-cytotoxic anionic surfactant, undec-1-en-11-yltetra(ethylene glycol) phosphate monoester surfactant (PMES), was used as a structure directing agent (SDA) together with aminopropyltrimethoxysilane that functioned as a co-structure directing agent (CSDA). The morphology and mesoporous structure of these materials were tuned by changing the molar ratio of CSDA and SDA. These mesoporous nanomaterials containing PMES inside the pores showed excellent biocompatibility in vitro. The cellular internalization and endosome escape of PMES-MSNs in cervical cancer cells (HeLa) was demonstrated by flow cytometry and confocal microscopy, respectively. The PMES-MSNs were used as drug delivery carriers for resveratrol, a low water solubility drug, by taking advantage of the hydrophobic environment created by the PMES micelle inside the pores. This surfactant-assisted delivery strategy was tested under physiological conditions showing an increase of the drug loading compared to the material without surfactant and steady release of resveratrol. Finally, the therapeutic properties of resveratrol-loaded PMES-MSNs were evaluated in vitro using HeLa and Chinese hamster ovarian cells. We envision that this surfactant-assisted drug delivery method using MSNs as nanovehicles would lead to a new generation of carrier materials for intracellular delivery of a variety of hydrophobic therapeutic agents. JF - Biomaterials AU - Tsai, Chih-Hsiang AU - Vivero-Escoto, Juan L AU - Slowing, Igor I AU - Fang, I-Ju AU - Trewyn, Brian G AU - Lin, Victor S-Y AD - Department of Chemistry, U.S. Department of Energy, Ames Laboratory, Iowa State University, Ames, IA 50011 3111, USA Y1 - 2011/09// PY - 2011 DA - Sep 2011 SP - 6234 EP - 6244 PB - Elsevier B.V., The Boulevard Kidlington Oxford OX5 1GB United Kingdom VL - 32 IS - 26 SN - 0142-9612, 0142-9612 KW - Toxicology Abstracts; Biotechnology and Bioengineering Abstracts KW - Mesoporous silica nanoparticles KW - Anionic surfactant KW - Drug delivery system KW - Surfactant-assisted drug release KW - Non-cytotoxic nanomaterials KW - Intracellular drug delivery KW - Drug delivery KW - Biocompatibility KW - Solubility KW - Cervical cancer KW - Hydrophobicity KW - Controlled release KW - Flow cytometry KW - Resveratrol KW - Pores KW - endosomes KW - Silica KW - Phosphate KW - Micelles KW - Confocal microscopy KW - nanoparticles KW - Surfactants KW - nanotechnology KW - W 30920:Tissue Engineering KW - X 24350:Industrial Chemicals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/883026574?accountid=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=Surfactant-assisted+controlled+release+of+hydrophobic+drugs+using+anionic+surfactant+templated+mesoporous+silica+nanoparticles&rft.au=Tsai%2C+Chih-Hsiang%3BVivero-Escoto%2C+Juan+L%3BSlowing%2C+Igor+I%3BFang%2C+I-Ju%3BTrewyn%2C+Brian+G%3BLin%2C+Victor+S-Y&rft.aulast=Tsai&rft.aufirst=Chih-Hsiang&rft.date=2011-09-01&rft.volume=32&rft.issue=26&rft.spage=6234&rft.isbn=&rft.btitle=&rft.title=Biomaterials&rft.issn=01429612&rft_id=info:doi/10.1016%2Fj.biomaterials.2011.04.077 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-08-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Drug delivery; Biocompatibility; Solubility; Cervical cancer; Hydrophobicity; Controlled release; Resveratrol; Flow cytometry; endosomes; Pores; Silica; Phosphate; Micelles; Confocal microscopy; Surfactants; nanoparticles; nanotechnology DO - http://dx.doi.org/10.1016/j.biomaterials.2011.04.077 ER - TY - JOUR T1 - Raman spectroscopy measurements of glucose and xylose in hydrolysate: Role of corn stover pretreatment and enzyme composition AN - 1777118202; 14611345 AB - The effect of corn stover pretreatment on glucose quantitation in hydrolysate using Raman spectroscopy is evaluated. Dilute sulfuric-acid pretreatment results in a 20 mg mL[super]-1 glucose limit of detection in hydrolysate. Soaking in aqueous ammonia pretreatment produces a 4 mg mL[super]-1 limit of detection. Water, ethanol or hexane extraction of corn stover reduces the spectral background that limits glucose detection in dilute acid hydrolysate. Additionally, a Raman spectroscopy multi-peak fitting method is presented to simultaneously measure glucose and xylose concentration in hydrolysate. This method yields a 6.1% average relative standard error at total saccharide concentrations above 45 mg mL[super]-1. When only cellulase is present, glucose and xylose yield were measured by Raman spectroscopy to be 32 +/- 4 and 7.0 +/- 0.8 mg mL[super]-1, respectively. When both cellulase and hemicellulase were present, xylose yield increased to 18.0 +/- 0.5 mg mL[super]-1. Enzymatic or colorimetric assays confirmed the validity of the Raman spectroscopy results. JF - Bioresource Technology AU - Shih, Chien-Ju AU - Lupoi, Jason S AU - Smith, Emily A AD - Ames Laboratory, US Department of Energy, Ames, IA 50011-3111, USA Y1 - 2011/04// PY - 2011 DA - April 2011 SP - 5169 EP - 5176 PB - Elsevier Science, The Boulevard Kidlington Oxford OX5 1GB UK VL - 102 IS - 8 SN - 0960-8524, 0960-8524 KW - Mechanical & Transportation Engineering Abstracts (MT); Environmental Engineering Abstracts (EN); CSA / ASCE Civil Engineering Abstracts (CE) KW - Raman spectroscopy KW - Glucose quantitation KW - Xylose quantitation KW - Enzymatic hydrolysate KW - Biofuels KW - Xylose KW - Pretreatment KW - Ethyl alcohol KW - Corn KW - Glucose KW - Hydrolysates KW - Cellulase KW - Dilution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777118202?accountid=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=Bioresource+Technology&rft.atitle=Raman+spectroscopy+measurements+of+glucose+and+xylose+in+hydrolysate%3A+Role+of+corn+stover+pretreatment+and+enzyme+composition&rft.au=Shih%2C+Chien-Ju%3BLupoi%2C+Jason+S%3BSmith%2C+Emily+A&rft.aulast=Shih&rft.aufirst=Chien-Ju&rft.date=2011-04-01&rft.volume=102&rft.issue=8&rft.spage=5169&rft.isbn=&rft.btitle=&rft.title=Bioresource+Technology&rft.issn=09608524&rft_id=info:doi/10.1016%2Fj.biortech.2011.01.043 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-06-01 N1 - Last updated - 2016-05-18 DO - http://dx.doi.org/10.1016/j.biortech.2011.01.043 ER - TY - JOUR T1 - Measurement of gas kinetic temperatures for polyatomic ions in inductively coupled plasma-mass spectrometry: Validation and refinements AN - 1221138870; 15161791 AB - The general method of comparing measured ion ratios to calculated ion ratios to determine a gas kinetic temperature (Tgas) is reviewed. Various mathematical refinements to the calculated partition functions are examined for their effect on the determined Tgas. It is found that (a) excited electronic states should be included for ArO+, neutral NO, and O2; (b) a 10% error in solvent load, sample gas flow rate, vibrational constant ( omega ), rotational constant (B) or measured ion ratio produces only a 1 to 3% error in Tgas; (c) a 10% error in dissociation energy (D0) creates nearly a 10% error in Tgas; and (d) high temperature corrections to the partition functions produce minimal change and can generally be neglected. JF - Spectrochimica Acta Part B Atomic Spectroscopy AU - McIntyre, Sally M AU - Ferguson, Jill Wisnewski AU - Witte, Travis M AU - Houk, R S AD - Ames Laboratory U.S. Department of Energy, Department of Chemistry, Iowa State University, Ames, IA 50011, USA, rshouk@iastate.edu Y1 - 2011/03// PY - 2011 DA - Mar 2011 SP - 248 EP - 254 PB - Elsevier B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 66 IS - 3-4 SN - 0584-8547, 0584-8547 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Inductively coupled plasma mass spectrometry KW - ICP-MS KW - Inductively coupled plasma KW - Ion extraction ICP-MS KW - Ions KW - Temperature KW - Solvents KW - Errors KW - Spectroscopy KW - Flow Rates KW - Kinetics KW - Dissociation KW - Load Distribution KW - SW 5010:Network design KW - AQ 00008:Effects of Pollution KW - Q2 09182:Methods and instruments KW - Q5 08502:Methods and instruments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1221138870?accountid=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=Spectrochimica+Acta+Part+B+Atomic+Spectroscopy&rft.atitle=Measurement+of+gas+kinetic+temperatures+for+polyatomic+ions+in+inductively+coupled+plasma-mass+spectrometry%3A+Validation+and+refinements&rft.au=McIntyre%2C+Sally+M%3BFerguson%2C+Jill+Wisnewski%3BWitte%2C+Travis+M%3BHouk%2C+R+S&rft.aulast=McIntyre&rft.aufirst=Sally&rft.date=2011-03-01&rft.volume=66&rft.issue=3-4&rft.spage=248&rft.isbn=&rft.btitle=&rft.title=Spectrochimica+Acta+Part+B+Atomic+Spectroscopy&rft.issn=05848547&rft_id=info:doi/10.1016%2Fj.sab.2011.02.003 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-11-01 N1 - Last updated - 2015-04-09 N1 - SubjectsTermNotLitGenreText - Ions; Dissociation; Solvents; Flow Rates; Kinetics; Load Distribution; Temperature; Spectroscopy; Errors DO - http://dx.doi.org/10.1016/j.sab.2011.02.003 ER - TY - JOUR T1 - THE DAWN OF MATERIALS DESIGN AND PROCESSING FOR A SUSTAINABLE WORLD AN - 880675360; 14868959 AB - A significant amount of reflection and the adoption of a bold outlook will allow us to conclude that, as professionals who work with materials, we are better positioned to address these challenges than most others. It is within the scope of working with materials to enlighten the nature of commerce, to improve interactions with the environment and climate, and to soften the blow of global resource consumption. To realize this potential, the materials community must increasingly act and develop capability in three key areas: (1) sustainable processing and manufacturing, (2) sustainability evaluation, and (3) sustainability education. This will shrink the environmental footprint of production, help identify comprehensive long-run solutions, and create and educate many future practitioners of those skills. To date, most materials innovations have been created to solve problems in production efficiency or product performance. However, this new paradigm of creating sustainable solutions requires understanding the consequences of materials utilization throughout the product life cycle. Meeting materials challenges has always required an interdisciplinary approach, but meeting sustainable materials challenges presents an exciting opportunity to push this further, while still maintaining the bottom line of profitability. super(2) We must also seek input from those who have frequently been left out of the design process: the extractive processor (from mineral resources or recycled scrap), the environmental scientist (to minimize impacts), and even the resource economist (for extended cost analyses). JF - International Journal of Powder Metallurgy AU - Anderson, I E AU - Meskers, C AU - Jenks, C J AD - Division of Materials Sciences and Engineering, Ames Laboratory (USDOE), and Material Science and Engineering Department, Iowa State University, Ames, Iowa USA Y1 - 2011/02// PY - 2011 DA - Feb 2011 SP - 17 EP - 22 PB - A P M I International VL - 47 IS - 1 SN - 0888-7462, 0888-7462 KW - Sustainability Science Abstracts KW - Education KW - life cycle KW - cost analysis KW - Sustainable development KW - sustainability KW - innovations KW - mineral resources KW - resource consumption KW - Design KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/880675360?accountid=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=International+Journal+of+Powder+Metallurgy&rft.atitle=THE+DAWN+OF+MATERIALS+DESIGN+AND+PROCESSING+FOR+A+SUSTAINABLE+WORLD&rft.au=Anderson%2C+I+E%3BMeskers%2C+C%3BJenks%2C+C+J&rft.aulast=Anderson&rft.aufirst=I&rft.date=2011-02-01&rft.volume=47&rft.issue=1&rft.spage=17&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Powder+Metallurgy&rft.issn=08887462&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-12-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Education; life cycle; cost analysis; Sustainable development; sustainability; innovations; resource consumption; mineral resources; Design ER - TY - JOUR T1 - [Cr8(PhCO2)16O4].4CH3CN.2H2O: structural origin of magnetic anisotropy in a molecular spin cluster AN - 818840071; 13821609 AB - The Cr4O4 hetero-cubane-centered octachromium(III) cluster [Cr8(PhCO2)16O4] crystallizes from fluorobenzene-acetonitrile as dodeca-k2-benzoato-tetrabenzoatotetra-k4-oxido-octachromium(III) acetonitrile tetrasolvate dihydrate, [Cr8(C7H5O2)16O4].4C2H3N.2H2O, (I). Crystals produced by this method are significantly more stable than the originally published dichloromethane pentasolvate, [Cr8(PhCO2)16O4].5CH2Cl2 [Atkinson et al. (1999). Chem. Commun. pp. 285-286], leading to a significantly higher quality structure and allowing the production of large quantities of high-quality nondeuterated and deuterated material suitable for inelastic neutron scattering (INS) measurements. Compound (I) reveals a higher symmetry structure in which the cluster sits on a twofold rotation axis, and is based on an asymmetric unit containing four crystallographically independent Cr positions, two oxide ligands, eight benzoate ligands, two acetonitrile solvent molecules and one disordered water molecule. All the Cr atoms are six-coordinate, with an octahedral geometry for the inner cubane and a more highly distorted coordination environment in the outer positions. Despite the higher symmetry, the coordination geometries observed in (I) are largely similar to the dichloromethane pentasolvate structure, indicating that crystal-packing effects have little influence on the molecular structure of [Cr8(PhCO2)16O4]. Close structural analysis reveals that the high magnetic anisotropy observed in the INS measurements is a consequence of the distorted coordination geometry of the four outer Cr atoms. JF - Acta Crystallographica, Section C: Crystal Structure Communications AU - Fielden, John AU - Ellern, Arkady AU - Koegerler, Paul AD - aAmes Laboratory, Iowa State University, Ames, IA 50011, USA, kogerler@ameslab.gov Y1 - 2010/09/15/ PY - 2010 DA - 2010 Sep 15 SP - m253 EP - m256 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 USA VL - 66 IS - 9 SN - 0108-2701, 0108-2701 KW - Toxicology Abstracts KW - Dichloromethane KW - Anisotropy KW - Benzoic acid KW - Neutron scattering KW - Crystal structure KW - Solvents KW - oxides KW - Crystals KW - Acetonitrile KW - X 24390:Radioactive Materials UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/818840071?accountid=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=Acta+Crystallographica%2C+Section+C%3A+Crystal+Structure+Communications&rft.atitle=%5BCr8%28PhCO2%2916O4%5D.4CH3CN.2H2O%3A+structural+origin+of+magnetic+anisotropy+in+a+molecular+spin+cluster&rft.au=Fielden%2C+John%3BEllern%2C+Arkady%3BKoegerler%2C+Paul&rft.aulast=Fielden&rft.aufirst=John&rft.date=2010-09-15&rft.volume=66&rft.issue=9&rft.spage=m253&rft.isbn=&rft.btitle=&rft.title=Acta+Crystallographica%2C+Section+C%3A+Crystal+Structure+Communications&rft.issn=01082701&rft_id=info:doi/10.1107%2FS0108270110032683 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-03-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Benzoic acid; Anisotropy; Dichloromethane; Neutron scattering; Solvents; Crystal structure; oxides; Crystals; Acetonitrile DO - http://dx.doi.org/10.1107/S0108270110032683 ER - TY - JOUR T1 - Capped mesoporous silica nanoparticles as stimuli-responsive controlled release systems for intracellular drug/gene delivery AN - 1017956066; 15816277 AB - Importance of the field: The incorporation of stimuli-responsive properties into nanostructured systems has recently attracted significant attention in the research of intracellular drug/gene delivery. In particular, numerous surface-functionalized, end-capped mesoporous silica nanoparticle (MSN) materials have been designed as efficient stimuli-responsive controlled release systems with the advantageous `zero premature release' property. Areas covered in this review: Herein, the most recent research progress on the design of biocompatible, capped MSN materials for stimuli-responsive intracellular controlled release of therapeutics and genes is reviewed. A series of hard and soft caps for drug encapsulation and a variety of internal and external stimuli for controlled release of different cargoes are summarized. Recent investigations on the biocompatibility of MSN both in vitro and in vivo are also discussed. What the reader will gain: The reader will gain an understanding of the challenges for the future exploration of biocompatible stimuli-responsive MSN devices. Take home message: With a better understanding of the unique features of capped MSN and its behaviors in biological environment, these multifunctional materials will find a wide variety of applications in the field of drug/gene delivery. JF - Expert Opinion on Drug Delivery AU - Zhao, Yannan AU - Vivero-Escoto, Juan L AU - Slowing, Igor I AU - Trewyn, Brian G AU - Lin, Victor S-Y AD - 1Iowa State University, Department of Chemistry, US Department of Energy Ames Laboratory, Ames, IA 50011-3111, USA Y1 - 2010/09// PY - 2010 DA - Sep 2010 SP - 1013 EP - 1029 PB - Informa Healthcare VL - 7 IS - 9 SN - 1742-5247, 1742-5247 KW - Biotechnology and Bioengineering Abstracts; Genetics Abstracts KW - Attention KW - Biocompatibility KW - Controlled release KW - Drug delivery KW - Encapsulation KW - External stimuli KW - Gene transfer KW - Reviews KW - Silica KW - nanoparticles KW - W 30905:Medical Applications KW - G 07750:Ecological & Population Genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1017956066?accountid=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=Expert+Opinion+on+Drug+Delivery&rft.atitle=Capped+mesoporous+silica+nanoparticles+as+stimuli-responsive+controlled+release+systems+for+intracellular+drug%2Fgene+delivery&rft.au=Zhao%2C+Yannan%3BVivero-Escoto%2C+Juan+L%3BSlowing%2C+Igor+I%3BTrewyn%2C+Brian+G%3BLin%2C+Victor+S-Y&rft.aulast=Zhao&rft.aufirst=Yannan&rft.date=2010-09-01&rft.volume=7&rft.issue=9&rft.spage=1013&rft.isbn=&rft.btitle=&rft.title=Expert+Opinion+on+Drug+Delivery&rft.issn=17425247&rft_id=info:doi/10.1517%2F17425247.2010.498816 L2 - http://www.ingentaconnect.com/content/apl/edd/2010/00000007/00000009/art00002 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-05-01 N1 - Last updated - 2012-12-03 N1 - SubjectsTermNotLitGenreText - Drug delivery; Biocompatibility; Silica; Gene transfer; Reviews; Attention; External stimuli; nanoparticles; Controlled release; Encapsulation DO - http://dx.doi.org/10.1517/17425247.2010.498816 ER - TY - JOUR T1 - Digestion of individual DNA molecules by l-exonuclease at liquid-solid interface AN - 753675933; 13232630 AB - Enzyme digestion of single DNA molecules was directly observed in real time by dual-color total internal reflection fluorescence microscopy (TIRFM). Individual l-DNA molecules labeled with the fluorescent dye, YOYO-1, were stretched in a laminar flow stream and immobilized on a bare fused-silica prism surface based on hydrophobic and electrostatic interactions. Enzyme digestion was initiated by the influx of l-exonuclease enzyme via capillary force. When the dye: bp ratio was higher than 1: 20, the exact digestion rate could not be measured because of induced photocleavage of the DNA molecules. At a dye: bp ratio of 1: 50, shortening of the DNA strand was recorded in real time. Unlike previous studies, the length-based digestion rate of l-exonuclease showed 3 distinct values in the range of 0.173(c0.024) to 0.462(c0.152) km s super(-1) at 37C. That is, different enzyme molecules exhibit different digestion dynamics. Digestion was also monitored based on the decrease in fluorescence intensity, but uncertainties were much larger due to the distance dependent excitation intensity in the TIRF mode. JF - Analyst (Cambridge UK) AU - Kang, SH AU - Lee, S AU - Yeung, E S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, Iowa, 50011, USA, yeung@ameslab.gov Y1 - 2010/07// PY - 2010 DA - July 2010 SP - 1759 EP - 1764 PB - The Royal Society of Chemistry, Thomas Graham House, Milton Road Science Park Cambridge CB4 0WF UK, [mailto:sales@rsc.org], [URL:http://www.rsc.org/analyst] VL - 135 IS - 7 SN - 0003-2654, 0003-2654 KW - Aqualine Abstracts; Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Biochemistry Abstracts 2: Nucleic Acids KW - Laminar Flow KW - Interfaces KW - Hydrophobicity KW - Electrostatic properties KW - Streams KW - Digestion KW - Fluorescent indicators KW - British Isles KW - Fluorescence KW - Enzymes KW - Laminar flow KW - Stream KW - Microscopy KW - DNA KW - Fluorescence microscopy KW - Q2 09243:Structure, mechanics and thermodynamics KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - N 14845:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/753675933?accountid=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=Analyst+%28Cambridge+UK%29&rft.atitle=Digestion+of+individual+DNA+molecules+by+l-exonuclease+at+liquid-solid+interface&rft.au=Kang%2C+SH%3BLee%2C+S%3BYeung%2C+E+S&rft.aulast=Kang&rft.aufirst=SH&rft.date=2010-07-01&rft.volume=135&rft.issue=7&rft.spage=1759&rft.isbn=&rft.btitle=&rft.title=Analyst+%28Cambridge+UK%29&rft.issn=00032654&rft_id=info:doi/10.1039%2Fc0an00145g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-08-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Laminar flow; Stream; DNA; Fluorescence microscopy; Digestion; Fluorescent indicators; Enzymes; Electrostatic properties; Hydrophobicity; Streams; Fluorescence; Laminar Flow; Interfaces; Microscopy; British Isles DO - http://dx.doi.org/10.1039/c0an00145g ER - TY - JOUR T1 - Highly sensitive detection of DNA phosphorylation by counting single nanoparticles AN - 753652130; 13324834 AB - Abstract not available. JF - Analytical and Bioanalytical Chemistry AU - Ma, Changbei AU - Yeung, Edward S AD - Ames Laboratory-U.S. DOE and Department of Chemistry, Iowa State University, Ames, IA 50011, USA, yeung@ameslab.gov PY - 2010 SP - 2279 EP - 2284 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 397 IS - 6 SN - 1618-2642, 1618-2642 KW - Aqualine Abstracts; Water Resources Abstracts; Biochemistry Abstracts 2: Nucleic Acids KW - Phosphorylation KW - DNA KW - Enumeration KW - nanoparticles KW - Technology KW - AQ 00001:Water Resources and Supplies KW - SW 0810:General KW - N 14845:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/753652130?accountid=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=Analytical+and+Bioanalytical+Chemistry&rft.atitle=Highly+sensitive+detection+of+DNA+phosphorylation+by+counting+single+nanoparticles&rft.au=Ma%2C+Changbei%3BYeung%2C+Edward+S&rft.aulast=Ma&rft.aufirst=Changbei&rft.date=2010-07-01&rft.volume=397&rft.issue=6&rft.spage=2279&rft.isbn=&rft.btitle=&rft.title=Analytical+and+Bioanalytical+Chemistry&rft.issn=16182642&rft_id=info:doi/10.1007%2Fs00216-010-3801-x L2 - http://www.springerlink.com/content/234m125364717587/?p=5d1ec04134684e24a657d86e5cd4963d&pi=28 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-11-01 N1 - Last updated - 2016-01-21 N1 - SubjectsTermNotLitGenreText - Phosphorylation; DNA; Enumeration; nanoparticles; Technology DO - http://dx.doi.org/10.1007/s00216-010-3801-x ER - TY - CPAPER T1 - Paramagnetic Spin Correlations in CaFe2As2 Single Crystals T2 - 5th American Conference on Neutron Scattering (ACNS 2010) AN - 839699891; 5947370 JF - 5th American Conference on Neutron Scattering (ACNS 2010) AU - Diallo, Souleymane AU - Lumsden, Mark AU - Pratt, Daniel AU - Fernandes, Rafael AU - Tian, Wei AU - Zarestky, Jerel AU - Ni, Ni AU - Budko, Sergey AU - Canfield, Paul AU - Li, Haifeng AU - Vaknin, David AU - Kreyssig, Andreas AU - Goldman, Alan AU - McQueeney, Robert AU - Broholm, Collin AU - Perring, Toby Y1 - 2010/06/26/ PY - 2010 DA - 2010 Jun 26 KW - {Q1} KW - Crystals KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839699891?accountid=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=5th+American+Conference+on+Neutron+Scattering+%28ACNS+2010%29&rft.atitle=Paramagnetic+Spin+Correlations+in+CaFe2As2+Single+Crystals&rft.au=Diallo%2C+Souleymane%3BLumsden%2C+Mark%3BPratt%2C+Daniel%3BFernandes%2C+Rafael%3BTian%2C+Wei%3BZarestky%2C+Jerel%3BNi%2C+Ni%3BBudko%2C+Sergey%3BCanfield%2C+Paul%3BLi%2C+Haifeng%3BVaknin%2C+David%3BKreyssig%2C+Andreas%3BGoldman%2C+Alan%3BMcQueeney%2C+Robert%3BBroholm%2C+Collin%3BPerring%2C+Toby&rft.aulast=Diallo&rft.aufirst=Souleymane&rft.date=2010-06-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=5th+American+Conference+on+Neutron+Scattering+%28ACNS+2010%29&rft.issn=&rft_id=info:doi/ L2 - http://www.mrs.org/s_mrs/sec.asp?CID=26005&DID=318841 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Strong Interactions Among Structure, Magnetism and Superconductivity in the Doped Iron Arsenides T2 - 5th American Conference on Neutron Scattering (ACNS 2010) AN - 839698914; 5947397 JF - 5th American Conference on Neutron Scattering (ACNS 2010) AU - Goldman, Alan Y1 - 2010/06/26/ PY - 2010 DA - 2010 Jun 26 KW - {Q1} KW - Iron KW - Magnetism KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839698914?accountid=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=5th+American+Conference+on+Neutron+Scattering+%28ACNS+2010%29&rft.atitle=Strong+Interactions+Among+Structure%2C+Magnetism+and+Superconductivity+in+the+Doped+Iron+Arsenides&rft.au=Goldman%2C+Alan&rft.aulast=Goldman&rft.aufirst=Alan&rft.date=2010-06-26&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=5th+American+Conference+on+Neutron+Scattering+%28ACNS+2010%29&rft.issn=&rft_id=info:doi/ L2 - http://www.mrs.org/s_mrs/sec.asp?CID=26005&DID=318841 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Structure and Phenomena at Biomimetic Templates by X-Ray Synchrotron Radiation T2 - 84th Colloid and Surface Science Symposium AN - 839681393; 5925955 JF - 84th Colloid and Surface Science Symposium AU - Vaknin, David Y1 - 2010/06/20/ PY - 2010 DA - 2010 Jun 20 KW - {Q1} KW - X radiation KW - Ionizing radiation KW - Templates KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839681393?accountid=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=84th+Colloid+and+Surface+Science+Symposium&rft.atitle=Structure+and+Phenomena+at+Biomimetic+Templates+by+X-Ray+Synchrotron+Radiation&rft.au=Vaknin%2C+David&rft.aulast=Vaknin&rft.aufirst=David&rft.date=2010-06-20&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=84th+Colloid+and+Surface+Science+Symposium&rft.issn=&rft_id=info:doi/ L2 - http://www.uakron.edu/colloids2010/technical_program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Single Molecule Imaging of Protein Molecules in Nanopores T2 - 35th International Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC 2010) AN - 839594626; 5882096 JF - 35th International Symposium on High Performance Liquid Phase Separations and Related Techniques (HPLC 2010) AU - Yeung, Edward AU - Ma, Changbei Y1 - 2010/06/19/ PY - 2010 DA - 2010 Jun 19 KW - {Q1} KW - Imaging techniques KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839594626?accountid=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=35th+International+Symposium+on+High+Performance+Liquid+Phase+Separations+and+Related+Techniques+%28HPLC+2010%29&rft.atitle=Single+Molecule+Imaging+of+Protein+Molecules+in+Nanopores&rft.au=Yeung%2C+Edward%3BMa%2C+Changbei&rft.aulast=Yeung&rft.aufirst=Edward&rft.date=2010-06-19&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=35th+International+Symposium+on+High+Performance+Liquid+Phase+Separations+and+Related+Techniques+%28HPLC+2010%29&rft.issn=&rft_id=info:doi/ L2 - http://www.casss.org/associations/9165/files/HPLC%202010%20Program.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Monitoring and quantifying chlorophyll a at the single organelle level using MALDI MS imaging T2 - 58th ASMS Conference on Mass Spectrometry and Allied Topics AN - 839683460; 5920195 JF - 58th ASMS Conference on Mass Spectrometry and Allied Topics AU - Jun, Ji AU - Sun, Wei AU - Nikolau, Basil AU - Yeung, Edward AU - Lee, Young Y1 - 2010/05/23/ PY - 2010 DA - 2010 May 23 KW - {Q1} KW - Chlorophyll KW - Imaging techniques KW - Organelles KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839683460?accountid=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=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.atitle=Monitoring+and+quantifying+chlorophyll+a+at+the+single+organelle+level+using+MALDI+MS+imaging&rft.au=Jun%2C+Ji%3BSun%2C+Wei%3BNikolau%2C+Basil%3BYeung%2C+Edward%3BLee%2C+Young&rft.aulast=Jun&rft.aufirst=Ji&rft.date=2010-05-23&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Conferences/AnnualConference/Program/tabid/113/Def LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - LDI-MS Imaging of Flavonoid Metabolites in Genetically Mutated Arabidopsis T2 - 58th ASMS Conference on Mass Spectrometry and Allied Topics AN - 839674268; 5921544 JF - 58th ASMS Conference on Mass Spectrometry and Allied Topics AU - Korte, Andrew AU - Lee, Young-Jin AU - Song, Zhihong AU - Yeung, Edward AU - Nikolau, Basil Y1 - 2010/05/23/ PY - 2010 DA - 2010 May 23 KW - {Q1} KW - Flavonoids KW - Metabolites KW - Imaging techniques KW - {Q2} KW - Arabidopsis KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839674268?accountid=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=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.atitle=LDI-MS+Imaging+of+Flavonoid+Metabolites+in+Genetically+Mutated+Arabidopsis&rft.au=Korte%2C+Andrew%3BLee%2C+Young-Jin%3BSong%2C+Zhihong%3BYeung%2C+Edward%3BNikolau%2C+Basil&rft.aulast=Korte&rft.aufirst=Andrew&rft.date=2010-05-23&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Conferences/AnnualConference/Program/tabid/113/Def LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - More Information in Less Time: Strategies for High Spatial & High Mass Spectral Resolution Imaging Utilizing a Hybrid LIT-Orbitrap MS T2 - 58th ASMS Conference on Mass Spectrometry and Allied Topics AN - 839670106; 5918767 JF - 58th ASMS Conference on Mass Spectrometry and Allied Topics AU - Perdian, David AU - Yeung, Edward AU - Lee, Young Y1 - 2010/05/23/ PY - 2010 DA - 2010 May 23 KW - {Q1} KW - Hybrids KW - Imaging techniques KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839670106?accountid=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=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.atitle=More+Information+in+Less+Time%3A+Strategies+for+High+Spatial+%26amp%3B+High+Mass+Spectral+Resolution+Imaging+Utilizing+a+Hybrid+LIT-Orbitrap+MS&rft.au=Perdian%2C+David%3BYeung%2C+Edward%3BLee%2C+Young&rft.aulast=Perdian&rft.aufirst=David&rft.date=2010-05-23&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Conferences/AnnualConference/Program/tabid/113/Def LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Petroleomic Analysis of Pyrolysis Biomasses using APPI FT ICR and APPI LTQ-Orbitrap T2 - 58th ASMS Conference on Mass Spectrometry and Allied Topics AN - 839667583; 5921449 JF - 58th ASMS Conference on Mass Spectrometry and Allied Topics AU - Lee, Young AU - Smith, Erica AU - Perdian, David AU - Thompson, Christopher AU - Brown, Robert Y1 - 2010/05/23/ PY - 2010 DA - 2010 May 23 KW - {Q1} KW - Biomass KW - Pyrolysis KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839667583?accountid=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=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.atitle=Petroleomic+Analysis+of+Pyrolysis+Biomasses+using+APPI+FT+ICR+and+APPI+LTQ-Orbitrap&rft.au=Lee%2C+Young%3BSmith%2C+Erica%3BPerdian%2C+David%3BThompson%2C+Christopher%3BBrown%2C+Robert&rft.aulast=Lee&rft.aufirst=Young&rft.date=2010-05-23&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Conferences/AnnualConference/Program/tabid/113/Def LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Characterization of Algae Oil: APPI and MS Imaging Approaches using LTQ-Orbitrap T2 - 58th ASMS Conference on Mass Spectrometry and Allied Topics AN - 839667539; 5921454 JF - 58th ASMS Conference on Mass Spectrometry and Allied Topics AU - Smith, Erica AU - Klein, Adam AU - Trewyn, Brian AU - Lin, Victor AU - Lee, Young-Jin Y1 - 2010/05/23/ PY - 2010 DA - 2010 May 23 KW - {Q1} KW - Oil KW - Imaging techniques KW - Algae KW - {Q2} KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839667539?accountid=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=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.atitle=Characterization+of+Algae+Oil%3A+APPI+and+MS+Imaging+Approaches+using+LTQ-Orbitrap&rft.au=Smith%2C+Erica%3BKlein%2C+Adam%3BTrewyn%2C+Brian%3BLin%2C+Victor%3BLee%2C+Young-Jin&rft.aulast=Smith&rft.aufirst=Erica&rft.date=2010-05-23&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Conferences/AnnualConference/Program/tabid/113/Def LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - How to Efficiently Find a Needle in a Haystack: Method Optimization for Shotgun Chemical Cross-Linking Mass Spectrometry T2 - 58th ASMS Conference on Mass Spectrometry and Allied Topics AN - 839665443; 5921049 JF - 58th ASMS Conference on Mass Spectrometry and Allied Topics AU - Klein, Adam AU - Lee, Young-Jin Y1 - 2010/05/23/ PY - 2010 DA - 2010 May 23 KW - {Q1} KW - Mass spectroscopy KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/839665443?accountid=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=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.atitle=How+to+Efficiently+Find+a+Needle+in+a+Haystack%3A+Method+Optimization+for+Shotgun+Chemical+Cross-Linking+Mass+Spectrometry&rft.au=Klein%2C+Adam%3BLee%2C+Young-Jin&rft.aulast=Klein&rft.aufirst=Adam&rft.date=2010-05-23&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=58th+ASMS+Conference+on+Mass+Spectrometry+and+Allied+Topics&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Conferences/AnnualConference/Program/tabid/113/Def LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-01-11 N1 - Last updated - 2011-01-14 ER - TY - CPAPER T1 - Unexpected Beryllium Contamination: Lessons Learned from Characterization and Remediation Efforts T2 - 2010 Conference and Exposition of the American Industrial Hygiene Association (AIHce 2010) AN - 754215724; 5779821 JF - 2010 Conference and Exposition of the American Industrial Hygiene Association (AIHce 2010) AU - Withers, J AU - Wessels, T Y1 - 2010/05/22/ PY - 2010 DA - 2010 May 22 KW - Bioremediation KW - Beryllium KW - Contamination KW - Pollution control KW - U 2000:Biological Sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/754215724?accountid=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=2010+Conference+and+Exposition+of+the+American+Industrial+Hygiene+Association+%28AIHce+2010%29&rft.atitle=Unexpected+Beryllium+Contamination%3A+Lessons+Learned+from+Characterization+and+Remediation+Efforts&rft.au=Withers%2C+J%3BWessels%2C+T&rft.aulast=Withers&rft.aufirst=J&rft.date=2010-05-22&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2010+Conference+and+Exposition+of+the+American+Industrial+Hygiene+Association+%28AIHce+2010%29&rft.issn=&rft_id=info:doi/ L2 - http://www.aihce2010.org/aihce10/pdf/FP.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-08-02 N1 - Last updated - 2010-09-25 ER - TY - CPAPER T1 - Genetic Dissection of AACT Paralog-function on the Phytosterol Profi le of Arabidopsis T2 - 101st Annual Meeting and Expo of the American Oil Chemists' Society (AOCS 2010) AN - 754222899; 5788741 JF - 101st Annual Meeting and Expo of the American Oil Chemists' Society (AOCS 2010) AU - Song, Z AU - Jin, H AU - Nikolau, B Y1 - 2010/05/16/ PY - 2010 DA - 2010 May 16 KW - Phytosterols KW - Arabidopsis KW - U 2000:Biological Sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/754222899?accountid=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=101st+Annual+Meeting+and+Expo+of+the+American+Oil+Chemists%27+Society+%28AOCS+2010%29&rft.atitle=Genetic+Dissection+of+AACT+Paralog-function+on+the+Phytosterol+Profi+le+of+Arabidopsis&rft.au=Song%2C+Z%3BJin%2C+H%3BNikolau%2C+B&rft.aulast=Song&rft.aufirst=Z&rft.date=2010-05-16&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=101st+Annual+Meeting+and+Expo+of+the+American+Oil+Chemists%27+Society+%28AOCS+2010%29&rft.issn=&rft_id=info:doi/ L2 - http://annualmeeting.aocs.org/content/AOCS_AM10_Program_FINAL.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-08-02 N1 - Last updated - 2010-09-25 ER - TY - JOUR T1 - In situ probing of cholesterol in astrocytes at the single-cell level using laser desorption ionization mass spectrometric imaging with colloidal silver AN - 901669907; 15267710 AB - Mass spectrometric imaging has been utilized to localize individual astrocytes and to obtain cholesterol populations at the single-cell level in laser desorption ionization (LDI) with colloidal silver. The silver ion adduct of membrane-bound cholesterol was monitored to detect individual cells. Good correlation between mass spectrometric and optical images at different cell densities indicates the ability to perform single-cell studies of cholesterol abundance. The feasibility of quantification is confirmed by the agreement between the LDI-MS ion signals and the results from a traditional enzymatic fluorometric assay. We propose that this approach could be an effective tool to study chemical populations at the cellular level. Published in 2010 by John Wiley & Sons, Ltd. JF - Rapid Communications in Mass Spectrometry AU - Perdian, D C AU - Cha, Sangwon AU - Oh, Jisun AU - Sakaguchi, Donald S AU - Yeung, Edward S AU - Lee, Young Jin AD - Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, IA 50011, USA, yjlee@iastate.edu Y1 - 2010/04/30/ PY - 2010 DA - 2010 Apr 30 SP - 1147 EP - 1154 PB - Wiley-Blackwell, 111 River Street Hoboken NJ 07030-5774 United States VL - 24 IS - 8 SN - 1097-0231, 1097-0231 KW - CSA Neurosciences Abstracts; Environment Abstracts KW - Feasibility studies KW - Desorption KW - Astrocytes KW - Adducts KW - Cell density KW - Mass spectrometry KW - Population studies KW - Cholesterol KW - cholesterol KW - imaging KW - Mass spectroscopy KW - Lasers KW - Silver KW - Ionization KW - abundance KW - N3 11029:Neurophysiology & biophysics KW - ENA 07:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/901669907?accountid=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=Rapid+Communications+in+Mass+Spectrometry&rft.atitle=In+situ+probing+of+cholesterol+in+astrocytes+at+the+single-cell+level+using+laser+desorption+ionization+mass+spectrometric+imaging+with+colloidal+silver&rft.au=Perdian%2C+D+C%3BCha%2C+Sangwon%3BOh%2C+Jisun%3BSakaguchi%2C+Donald+S%3BYeung%2C+Edward+S%3BLee%2C+Young+Jin&rft.aulast=Perdian&rft.aufirst=D&rft.date=2010-04-30&rft.volume=24&rft.issue=8&rft.spage=1147&rft.isbn=&rft.btitle=&rft.title=Rapid+Communications+in+Mass+Spectrometry&rft.issn=10970231&rft_id=info:doi/10.1002%2Frcm.4491 L2 - http://onlinelibrary.wiley.com/doi/10.1002/rcm.4491/abstract LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-01-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Desorption; Astrocytes; Adducts; Cell density; Population studies; Lasers; Cholesterol; Ionization; imaging; Silver; Mass spectroscopy; Feasibility studies; Mass spectrometry; cholesterol; abundance DO - http://dx.doi.org/10.1002/rcm.4491 ER - TY - JOUR T1 - Optical imaging of non-fluorescent nanoparticle probes in live cells. AN - 734253987; 20098755 AB - Precise imaging of cellular and subcellular structures and dynamic processes in live cells is crucial for fundamental research in life sciences and in medical applications. Non-fluorescent nanoparticles are an important type of optical probe used in live-cell imaging due to their photostability, large optical cross-sections, and low toxicity. Here, we provide an overview of recent developments in the optical imaging of non-fluorescent nanoparticle probes in live cells. JF - The Analyst AU - Wang, Gufeng AU - Stender, Anthony S AU - Sun, Wei AU - Fang, Ning AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA. Y1 - 2010/02// PY - 2010 DA - February 2010 SP - 215 EP - 221 VL - 135 IS - 2 KW - Molecular Probes KW - 0 KW - Index Medicus KW - Animals KW - Humans KW - Nanoparticles -- analysis KW - Diagnostic Imaging KW - Cells -- ultrastructure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/734253987?accountid=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+Analyst&rft.atitle=Optical+imaging+of+non-fluorescent+nanoparticle+probes+in+live+cells.&rft.au=Wang%2C+Gufeng%3BStender%2C+Anthony+S%3BSun%2C+Wei%3BFang%2C+Ning&rft.aulast=Wang&rft.aufirst=Gufeng&rft.date=2010-02-01&rft.volume=135&rft.issue=2&rft.spage=215&rft.isbn=&rft.btitle=&rft.title=The+Analyst&rft.issn=1364-5528&rft_id=info:doi/10.1039%2Fb916395f LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2010-02-25 N1 - Date created - 2010-01-25 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 DO - http://dx.doi.org/10.1039/b916395f ER - TY - CPAPER T1 - Automating the Knowledge Discovery Process for Computational Quality of Service Research with Scientific Workflow Systems T2 - 21st International Conference for High Performance Computing, Networking, Storage and Analysis (SC 09) AN - 42039196; 5500909 JF - 21st International Conference for High Performance Computing, Networking, Storage and Analysis (SC 09) AU - Wu, Meng-Shiou AU - Campbell, Colin Y1 - 2009/11/14/ PY - 2009 DA - 2009 Nov 14 KW - Computer applications KW - Automation KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42039196?accountid=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=21st+International+Conference+for+High+Performance+Computing%2C+Networking%2C+Storage+and+Analysis+%28SC+09%29&rft.atitle=Automating+the+Knowledge+Discovery+Process+for+Computational+Quality+of+Service+Research+with+Scientific+Workflow+Systems&rft.au=Wu%2C+Meng-Shiou%3BCampbell%2C+Colin&rft.aulast=Wu&rft.aufirst=Meng-Shiou&rft.date=2009-11-14&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=21st+International+Conference+for+High+Performance+Computing%2C+Networking%2C+Storage+and+Analysis+%28SC+09%29&rft.issn=&rft_id=info:doi/ L2 - http://scyourway.nacse.org/conference/selection LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Structural Aspects of Plastic Deformation in Amorphous and Nanostructured Alloys Measured by In Situ X-Ray Scattering T2 - 2009 Materials Science and Technology Conference and Exposition (MS&T 2009) AN - 42583520; 5481658 JF - 2009 Materials Science and Technology Conference and Exposition (MS&T 2009) AU - Ott, Ryan Y1 - 2009/10/25/ PY - 2009 DA - 2009 Oct 25 KW - Alloys KW - Plastics KW - X-ray scattering KW - Deformation KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42583520?accountid=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=2009+Materials+Science+and+Technology+Conference+and+Exposition+%28MS%26T+2009%29&rft.atitle=Structural+Aspects+of+Plastic+Deformation+in+Amorphous+and+Nanostructured+Alloys+Measured+by+In+Situ+X-Ray+Scattering&rft.au=Ott%2C+Ryan&rft.aulast=Ott&rft.aufirst=Ryan&rft.date=2009-10-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2009+Materials+Science+and+Technology+Conference+and+Exposition+%28MS%26T+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.programmaster.org/PM/PM.nsf/SessionSheetView?OpenForm&Paren tUNID=460830349F34625F8525746B006198F0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Gas Atomization for Controlled Production of Metal Powders T2 - 2009 Materials Science and Technology Conference and Exposition (MS&T 2009) AN - 42583424; 5481612 JF - 2009 Materials Science and Technology Conference and Exposition (MS&T 2009) AU - Anderson, Iver AU - Byrd, David AU - Figliola, Richard Y1 - 2009/10/25/ PY - 2009 DA - 2009 Oct 25 KW - Metals KW - Powder KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42583424?accountid=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=2009+Materials+Science+and+Technology+Conference+and+Exposition+%28MS%26T+2009%29&rft.atitle=Gas+Atomization+for+Controlled+Production+of+Metal+Powders&rft.au=Anderson%2C+Iver%3BByrd%2C+David%3BFigliola%2C+Richard&rft.aulast=Anderson&rft.aufirst=Iver&rft.date=2009-10-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2009+Materials+Science+and+Technology+Conference+and+Exposition+%28MS%26T+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.programmaster.org/PM/PM.nsf/SessionSheetView?OpenForm&Paren tUNID=460830349F34625F8525746B006198F0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Structural and Chemical Effects that Enable Nucleation Control and Thermal Aging Resistance in Sn-Ag-Cu + X Solder Joints T2 - 2009 Materials Science and Technology Conference and Exposition (MS&T 2009) AN - 42582223; 5481523 JF - 2009 Materials Science and Technology Conference and Exposition (MS&T 2009) AU - Anderson, Iver AU - Harringa, Joel AU - Boesenberg, Adam AU - Laabs, Fran AU - Kracher, Alfred Y1 - 2009/10/25/ PY - 2009 DA - 2009 Oct 25 KW - Aging KW - Nucleation KW - Joints KW - Temperature effects KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42582223?accountid=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=2009+Materials+Science+and+Technology+Conference+and+Exposition+%28MS%26T+2009%29&rft.atitle=Structural+and+Chemical+Effects+that+Enable+Nucleation+Control+and+Thermal+Aging+Resistance+in+Sn-Ag-Cu+%2B+X+Solder+Joints&rft.au=Anderson%2C+Iver%3BHarringa%2C+Joel%3BBoesenberg%2C+Adam%3BLaabs%2C+Fran%3BKracher%2C+Alfred&rft.aulast=Anderson&rft.aufirst=Iver&rft.date=2009-10-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2009+Materials+Science+and+Technology+Conference+and+Exposition+%28MS%26T+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.programmaster.org/PM/PM.nsf/SessionSheetView?OpenForm&Paren tUNID=460830349F34625F8525746B006198F0 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Investigations of Translational and Rotational Motions in Living Cells Using Plasmonic Nanoprobes and Differential Interference Contrast Microscopy T2 - 44th Annual Midwest Regional Meeting of the American Chemical Society (MWRM 2009) AN - 42097604; 5534567 JF - 44th Annual Midwest Regional Meeting of the American Chemical Society (MWRM 2009) AU - Fang, Ning AU - Wang, Gufeng AU - Sun, Wei Y1 - 2009/10/21/ PY - 2009 DA - 2009 Oct 21 KW - Microscopy KW - Translation KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42097604?accountid=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=44th+Annual+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2009%29&rft.atitle=Investigations+of+Translational+and+Rotational+Motions+in+Living+Cells+Using+Plasmonic+Nanoprobes+and+Differential+Interference+Contrast+Microscopy&rft.au=Fang%2C+Ning%3BWang%2C+Gufeng%3BSun%2C+Wei&rft.aulast=Fang&rft.aufirst=Ning&rft.date=2009-10-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=44th+Annual+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.mwrm2009.org/sites/default/files/MWRM09AbstractBookFinal_v2 .pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Oxygen Insertion Into Rhodium-Hydrogen Bonds T2 - 44th Annual Midwest Regional Meeting of the American Chemical Society (MWRM 2009) AN - 42096964; 5534251 JF - 44th Annual Midwest Regional Meeting of the American Chemical Society (MWRM 2009) AU - Szajna-Fuller, Ewa AU - Bakac, Andreja Y1 - 2009/10/21/ PY - 2009 DA - 2009 Oct 21 KW - Oxygen KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42096964?accountid=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=44th+Annual+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2009%29&rft.atitle=Oxygen+Insertion+Into+Rhodium-Hydrogen+Bonds&rft.au=Szajna-Fuller%2C+Ewa%3BBakac%2C+Andreja&rft.aulast=Szajna-Fuller&rft.aufirst=Ewa&rft.date=2009-10-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=44th+Annual+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.mwrm2009.org/sites/default/files/MWRM09AbstractBookFinal_v2 .pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Mass Spectrometric Imaging with High Spatial and High Mass Resolution to Reveal Plant Metabolite Distribution Altered by Genetic Mutation T2 - 44th Annual Midwest Regional Meeting of the American Chemical Society (MWRM 2009) AN - 42094312; 5534296 JF - 44th Annual Midwest Regional Meeting of the American Chemical Society (MWRM 2009) AU - Jun, Ji Hyun AU - Liu, Zhenjiu AU - Yeung, Edward AU - Lee, Young-Jin AU - Song, Zhihong AU - Nikolau, Basil Y1 - 2009/10/21/ PY - 2009 DA - 2009 Oct 21 KW - Mutation KW - Metabolites KW - Imaging techniques KW - Ecological distribution KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42094312?accountid=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=44th+Annual+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2009%29&rft.atitle=Mass+Spectrometric+Imaging+with+High+Spatial+and+High+Mass+Resolution+to+Reveal+Plant+Metabolite+Distribution+Altered+by+Genetic+Mutation&rft.au=Jun%2C+Ji+Hyun%3BLiu%2C+Zhenjiu%3BYeung%2C+Edward%3BLee%2C+Young-Jin%3BSong%2C+Zhihong%3BNikolau%2C+Basil&rft.aulast=Jun&rft.aufirst=Ji&rft.date=2009-10-21&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=44th+Annual+Midwest+Regional+Meeting+of+the+American+Chemical+Society+%28MWRM+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.mwrm2009.org/sites/default/files/MWRM09AbstractBookFinal_v2 .pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Exploring Tuning Strategies for Quantum Chemistry Computations T2 - The Fourth International Workshop on Automatic Performance Tuning (iWAPT2009) AN - 42489036; 5437602 JF - The Fourth International Workshop on Automatic Performance Tuning (iWAPT2009) AU - Seshagiri, Lakshminarasimhan AU - Wu, Meng-Shiou AU - Sosonkina, Masha AU - Zhang, Zhao Y1 - 2009/10/01/ PY - 2009 DA - 2009 Oct 01 KW - Quantum chemistry KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42489036?accountid=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=The+Fourth+International+Workshop+on+Automatic+Performance+Tuning+%28iWAPT2009%29&rft.atitle=Exploring+Tuning+Strategies+for+Quantum+Chemistry+Computations&rft.au=Seshagiri%2C+Lakshminarasimhan%3BWu%2C+Meng-Shiou%3BSosonkina%2C+Masha%3BZhang%2C+Zhao&rft.aulast=Seshagiri&rft.aufirst=Lakshminarasimhan&rft.date=2009-10-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Fourth+International+Workshop+on+Automatic+Performance+Tuning+%28iWAPT2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.iwapt.org/program.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-04-06 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Theory of AC Loss in Cables with 2G HTS Wire T2 - 9th European Conference on Applied Superconductivity (EUCAS 2009) AN - 42344125; 5363449 JF - 9th European Conference on Applied Superconductivity (EUCAS 2009) AU - Clem, J AU - Malozemoff, A Y1 - 2009/09/13/ PY - 2009 DA - 2009 Sep 13 KW - Adenylate cyclase KW - Cables KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42344125?accountid=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=9th+European+Conference+on+Applied+Superconductivity+%28EUCAS+2009%29&rft.atitle=Theory+of+AC+Loss+in+Cables+with+2G+HTS+Wire&rft.au=Clem%2C+J%3BMalozemoff%2C+A&rft.aulast=Clem&rft.aufirst=J&rft.date=2009-09-13&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=9th+European+Conference+on+Applied+Superconductivity+%28EUCAS+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://eucas2009.ifw-dresden.de/fileadmin/book/all.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-12-18 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Surface Phenomena Arising from Structural Complexity T2 - 26th European Conference on Surface Science (ECOSS 26) AN - 42345695; 5366302 JF - 26th European Conference on Surface Science (ECOSS 26) AU - Thiel, P Y1 - 2009/08/30/ PY - 2009 DA - 2009 Aug 30 KW - Surface properties KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/42345695?accountid=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=26th+European+Conference+on+Surface+Science+%28ECOSS+26%29&rft.atitle=Surface+Phenomena+Arising+from+Structural+Complexity&rft.au=Thiel%2C+P&rft.aulast=Thiel&rft.aufirst=P&rft.date=2009-08-30&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=26th+European+Conference+on+Surface+Science+%28ECOSS+26%29&rft.issn=&rft_id=info:doi/ L2 - http://www.ecoss26.eu/ABSTRACT_BOOK_senzamargineR.pdf LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-12-18 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - The electrochemical characteristics of native Nitinol surfaces AN - 20616814; 9333797 AB - The present study explored the avenues for the improvement of native Nitinol surfaces for implantation obtained using traditional procedures such as mechanical polishing, chemical etching, electropolishing and heat treatments for a better understanding of their electrochemical behavior and associated surface stability, conductivity, reactivity and biological responses. The corrosion resistance (cyclic potential polarization, open circuit potential and polarization resistance) of Nitinol disc and wire samples were evaluated for various surface states in strain-free and strained wire conditions. The surface response to tension strain was studied in situ. Surface chemistry and structure were explored using XPS and Auger spectroscopy and photoelectrochemical methods, respectively. It was found that the polarization resistance of the Nitinol surfaces varied in a range from 100k to 10Mcm super(2) and the open circuit potentials from -440mV to -55mV. The surfaces prepared in chemical solutions showed consistent corrosion resistance in strain-free and strained states, but mechanically polished and heat treated samples were prone to pitting. Nitinol surface oxides are semiconductors with the band gaps of either 3.0eV (rutile) or 3.4eV (amorphous). The conductivity of semiconducting Nitinol surfaces relevant to their biological performances is discussed in terms of oxide stoichiometry and variable Ni content. Such biological characteristics of Nitinol surfaces as Ni release, fibrinogen adsorption and platelets behavior are re-examined based on the analysis of the results of the present study. JF - Biomaterials AU - Shabalovskaya, SA AU - Rondelli, G C AU - Undisz, AL AU - Anderegg, J W AU - Burleigh, T D AU - Rettenmayr, ME AD - Metallic Materials, Friedrich-Schiller University, Loebdergraben 32, 07743 Jena, Germany, shabalov@ameslab.gov Y1 - 2009/08// PY - 2009 DA - Aug 2009 SP - 3662 EP - 3671 PB - Elsevier Science, The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 30 IS - 22 SN - 0142-9612, 0142-9612 KW - Biotechnology and Bioengineering Abstracts KW - Heat KW - Fibrinogen KW - Corrosion KW - Adsorption KW - oxides KW - Circuits KW - Polarization KW - Etching KW - Heat treatments KW - Spectroscopy KW - W 30920:Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20616814?accountid=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=The+electrochemical+characteristics+of+native+Nitinol+surfaces&rft.au=Shabalovskaya%2C+SA%3BRondelli%2C+G+C%3BUndisz%2C+AL%3BAnderegg%2C+J+W%3BBurleigh%2C+T+D%3BRettenmayr%2C+ME&rft.aulast=Shabalovskaya&rft.aufirst=SA&rft.date=2009-08-01&rft.volume=30&rft.issue=22&rft.spage=3662&rft.isbn=&rft.btitle=&rft.title=Biomaterials&rft.issn=01429612&rft_id=info:doi/10.1016%2Fj.biomaterials.2009.03.034 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-06-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Heat; Fibrinogen; Adsorption; Corrosion; oxides; Circuits; Spectroscopy; Heat treatments; Etching; Polarization DO - http://dx.doi.org/10.1016/j.biomaterials.2009.03.034 ER - TY - CPAPER T1 - A Proposed Trusted Open Source Process T2 - 2009 Annual Meeting of the Society for Industrial and Applied Mathematics AN - 40245584; 5214619 JF - 2009 Annual Meeting of the Society for Industrial and Applied Mathematics AU - Benjegerdes, Troy AU - Strasburg, Chris Y1 - 2009/07/06/ PY - 2009 DA - 2009 Jul 06 KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/40245584?accountid=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=2009+Annual+Meeting+of+the+Society+for+Industrial+and+Applied+Mathematics&rft.atitle=A+Proposed+Trusted+Open+Source+Process&rft.au=Benjegerdes%2C+Troy%3BStrasburg%2C+Chris&rft.aulast=Benjegerdes&rft.aufirst=Troy&rft.date=2009-07-06&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2009+Annual+Meeting+of+the+Society+for+Industrial+and+Applied+Mathematics&rft.issn=&rft_id=info:doi/ L2 - http://meetings.siam.org/program.cfm?CONFCODE=AN09 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-09-28 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Trace elements in meteoritic troilite AN - 1366814279; 2013-045523 JF - Meteoritics & Planetary Science AU - Kracher, A AU - Brandstaetter, F AU - Anonymous Y1 - 2009/07// PY - 2009 DA - July 2009 EP - Abstract 5135 PB - Meteoritical Society, Fayetteville, AR VL - 44, SUPPL. SN - 1086-9379, 1086-9379 KW - zinc KW - ordinary chondrites KW - IIICD iron meteorites KW - IAB iron meteorites KW - Cape York Meteorite KW - stony meteorites KW - selenium KW - detection limit KW - copper KW - IIE iron meteorites KW - manganese KW - temperature KW - electron probe data KW - meteorites KW - Georgetown Meteorite KW - iron meteorites KW - IIIAB iron meteorites KW - trace elements KW - chondrites KW - troilite KW - Eh KW - chromium KW - H chondrites KW - Watson Meteorite KW - metals KW - Forest Vale Meteorite KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1366814279?accountid=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=Trace+elements+in+meteoritic+troilite&rft.au=Kracher%2C+A%3BBrandstaetter%2C+F%3BAnonymous&rft.aulast=Kracher&rft.aufirst=A&rft.date=2009-07-01&rft.volume=44%2C+SUPPL.&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/ L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Conference title - 72nd annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2013, American Geosciences Institute. N1 - Date revised - 2013-01-01 N1 - Number of references - 3 N1 - PubXState - AR N1 - Last updated - 2013-10-17 N1 - SubjectsTermNotLitGenreText - Cape York Meteorite; chondrites; chromium; copper; detection limit; Eh; electron probe data; Forest Vale Meteorite; Georgetown Meteorite; H chondrites; IAB iron meteorites; IIE iron meteorites; IIIAB iron meteorites; IIICD iron meteorites; iron meteorites; manganese; metals; meteorites; ordinary chondrites; selenium; stony meteorites; sulfides; temperature; trace elements; troilite; Watson Meteorite; zinc ER - TY - CPAPER T1 - Working Toward a Petroleomic Analysis of Bio-oils T2 - 57th American Society for Mass Spectrometry Conference on Mass Spectrometry AN - 40365465; 5282634 JF - 57th American Society for Mass Spectrometry Conference on Mass Spectrometry AU - Smith, Erica AU - Perdian, David AU - Lee, Young Y1 - 2009/05/31/ PY - 2009 DA - 2009 May 31 KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/40365465?accountid=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=57th+American+Society+for+Mass+Spectrometry+Conference+on+Mass+Spectrometry&rft.atitle=Working+Toward+a+Petroleomic+Analysis+of+Bio-oils&rft.au=Smith%2C+Erica%3BPerdian%2C+David%3BLee%2C+Young&rft.aulast=Smith&rft.aufirst=Erica&rft.date=2009-05-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=57th+American+Society+for+Mass+Spectrometry+Conference+on+Mass+Spectrometry&rft.issn=&rft_id=info:doi/ L2 - http://www.asms.org/Default.aspx?tabid=47 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-09-28 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Single-molecule immunosorbent assay as a tool for human immunodeficiency virus-1 antigen detection AN - 753651400; 13323804 AB - Ultrasensitive detection and quantification of viral antigen with a novel single-molecule immunosorbent assay (SMISA) was achieved. Antigen from human immunodeficiency virus type 1 (HIV-1), the major etiological agent of acquired immune deficiency syndrome, served as the screening target in this study. The target molecule was sandwiched between a polyclonal capture antibody and a monoclonal detector antibody. The capture antibody was covalently immobilized on (3-glycidoxypropyl) trimethoxy silane-modified glass slides. The detector antibody was conjugated with fluorescent Alexa Fluor 532 labeled secondary antibody prior to being used as a probe for the antigen. Imaging was performed with a total internal reflection fluorescence single-molecule detection system. This technique is demonstrated for detecting HIV-1 p24 antigen down to 0.1 pg/mL with a dynamic range of over four orders of magnitude. A Langmuir isotherm fits the molecule count dependence on the target concentration. The target antigen was further tested in 20% human serum, and the results showed that neither sensitivity nor dynamic range was affected by the biological matrix. SMISA is therefore a promising approach for the early diagnosis of viral induced diseases. JF - Analytical and Bioanalytical Chemistry AU - Li, Jiangwei AU - Xie, Wenjun AU - Fang, Ning AU - Yeung, Edward S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, IA 50011, USA, yeung@ameslab.gov Y1 - 2009/05// PY - 2009 DA - May 2009 SP - 489 EP - 497 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 394 IS - 2 SN - 1618-2642, 1618-2642 KW - Aqualine Abstracts; Water Resources Abstracts; Immunology Abstracts; Virology & AIDS Abstracts KW - Testing Procedures KW - p24 protein KW - Acquired immune deficiency syndrome KW - Fluorescence KW - Monoclonal antibodies KW - Probes KW - Immunodeficiency KW - imaging KW - Immunosorbents KW - Antibodies KW - Human immunodeficiency virus 1 KW - Assay KW - Fluorescent indicators KW - Diseases KW - Isotherms KW - AQ 00001:Water Resources and Supplies KW - V 22360:AIDS and HIV KW - SW 0810:General KW - F 06910:Microorganisms & Parasites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/753651400?accountid=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=Analytical+and+Bioanalytical+Chemistry&rft.atitle=Single-molecule+immunosorbent+assay+as+a+tool+for+human+immunodeficiency+virus-1+antigen+detection&rft.au=Li%2C+Jiangwei%3BXie%2C+Wenjun%3BFang%2C+Ning%3BYeung%2C+Edward+S&rft.aulast=Li&rft.aufirst=Jiangwei&rft.date=2009-05-01&rft.volume=394&rft.issue=2&rft.spage=489&rft.isbn=&rft.btitle=&rft.title=Analytical+and+Bioanalytical+Chemistry&rft.issn=16182642&rft_id=info:doi/10.1007%2Fs00216-009-2712-1 L2 - http://www.springerlink.com/content/l1558w4580316491/?p=54e9bda5905b4bd3b31a2367b35d6921&pi=11 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-08-01 N1 - Last updated - 2016-10-12 N1 - SubjectsTermNotLitGenreText - p24 protein; Acquired immune deficiency syndrome; Antibodies; Fluorescence; Monoclonal antibodies; Immunodeficiency; Fluorescent indicators; Isotherms; imaging; Immunosorbents; Testing Procedures; Probes; Assay; Diseases; Human immunodeficiency virus 1 DO - http://dx.doi.org/10.1007/s00216-009-2712-1 ER - TY - JOUR T1 - Photoinduced intracellular controlled release drug delivery in human cells by gold-capped mesoporous silica nanosphere. AN - 67011212; 19275256 AB - A gold nanoparticle (AuNP)-capped mesoporous silica nanosphere (MSN)-based intracellular drug delivery system (PR-AuNPs-MSN) for the photoinduced controlled release of an anticancer drug, paclitaxel, inside of human fibroblast and liver cells was synthesized and characterized. We found that the mesopores of MSN could be efficiently capped by the photoresponsive AuNPs without leaking the toxic drug, paclitaxel, inside of live human cells. This "zero premature release" characteristic is of importance for delivery of toxic drugs in chemotherapy. Furthermore, we demonstrated that the cargo-release property of this PR-AuNPs-MSN system could be easily controlled by low-power photoirradiation under biocompatible and physiological conditions. We envision that our results would play a significant role in designing new generations of carrier materials for intracellular delivery of a variety of hydrophobic toxic drugs. JF - Journal of the American Chemical Society AU - Vivero-Escoto, Juan L AU - Slowing, Igor I AU - Wu, Chian-Wen AU - Lin, Victor S-Y AD - Department of Chemistry and U.S. DOE Ames Laboratory, Iowa State University, Ames, Iowa 50011-3111, USA. Y1 - 2009/03/18/ PY - 2009 DA - 2009 Mar 18 SP - 3462 EP - 3463 VL - 131 IS - 10 KW - Gold KW - 7440-57-5 KW - Silicon Dioxide KW - 7631-86-9 KW - Index Medicus KW - Microscopy, Electron, Transmission KW - Humans KW - Drug Delivery Systems KW - Light KW - Metal Nanoparticles KW - Gold -- chemistry KW - Silicon Dioxide -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/67011212?accountid=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=Photoinduced+intracellular+controlled+release+drug+delivery+in+human+cells+by+gold-capped+mesoporous+silica+nanosphere.&rft.au=Vivero-Escoto%2C+Juan+L%3BSlowing%2C+Igor+I%3BWu%2C+Chian-Wen%3BLin%2C+Victor+S-Y&rft.aulast=Vivero-Escoto&rft.aufirst=Juan&rft.date=2009-03-18&rft.volume=131&rft.issue=10&rft.spage=3462&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Chemical+Society&rft.issn=1520-5126&rft_id=info:doi/10.1021%2Fja900025f LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2009-06-08 N1 - Date created - 2009-03-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 DO - http://dx.doi.org/10.1021/ja900025f ER - TY - CPAPER T1 - Molecular Imaging of Plant Tissue Using Colloidal Graphite and Colloidal Silver for Laser Desorption/Ionization Mass Spectrometry Experiments at Atmospheric Pressure T2 - 60th Pittsburgh Conference and Expo on Analytical Chemistry and Applied Spectroscopy (Pittcon 2009) AN - 41798815; 5041027 JF - 60th Pittsburgh Conference and Expo on Analytical Chemistry and Applied Spectroscopy (Pittcon 2009) AU - Perdian, David AU - Houk, Robert Y1 - 2009/03/08/ PY - 2009 DA - 2009 Mar 08 KW - Mass spectroscopy KW - Atmospheric pressure KW - Silver KW - Lasers KW - Imaging techniques KW - Desorption KW - Graphite KW - U 2000:Biological Sciences UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/41798815?accountid=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=60th+Pittsburgh+Conference+and+Expo+on+Analytical+Chemistry+and+Applied+Spectroscopy+%28Pittcon+2009%29&rft.atitle=Molecular+Imaging+of+Plant+Tissue+Using+Colloidal+Graphite+and+Colloidal+Silver+for+Laser+Desorption%2FIonization+Mass+Spectrometry+Experiments+at+Atmospheric+Pressure&rft.au=Perdian%2C+David%3BHouk%2C+Robert&rft.aulast=Perdian&rft.aufirst=David&rft.date=2009-03-08&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=60th+Pittsburgh+Conference+and+Expo+on+Analytical+Chemistry+and+Applied+Spectroscopy+%28Pittcon+2009%29&rft.issn=&rft_id=info:doi/ L2 - http://www.pittcon.org/technical/finalprogram.html LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-17 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Schloegl's second model for autocatalysis with particle diffusion: Lattice-gas realization exhibiting generic two-phase coexistence. AN - 66963243; 19239283 AB - We analyze a discontinuous nonequilibrium phase transition between an active (or reactive) state and a poisoned (or extinguished) state occurring in a stochastic lattice-gas realization of Schloegl's second model for autocatalysis. This realization, also known as the quadratic contact process, involves spontaneous annihilation, autocatalytic creation, and diffusion of particles on a square lattice, where creation at empty sites requires a suitable nearby pair of particles. The poisoned state exists for all annihilation rates p>0 and is an absorbing particle-free "vacuum" state. The populated active steady state exists only for p below a critical value, p(e). If p(f) denotes the critical value below which a finite population can survive, then we show that p(f)900 m super(2)/g), tunable pore diameter (2-20 nm) and uniform mesoporous structure (hexagonal channels or cubic pores) of the mesoporous silicas offer a unique advantage for loading and releasing large quantities of biomedical agents. Recent breakthroughs in controlling the particle size and shape of these materials have greatly improved the biocompatibility and the cellular uptake efficiency. The strategy of using various removable capping moieties, such as photo- or redox-responsive organic groups, inorganic nanoparticles, dendrimers and polymers, to encapsulate guest biomolecules inside the porous matrices further enables the utilization of these surface-functionalized mesoporous silica nanomaterials for stimuli-responsive controlled release in vitro and in vivo. In addition to the reviewed studies, many new and exciting applications of these novel materials will soon be realized. JF - Nanomedicine AU - Giri, Supratim AU - Trewyn, Brian G AU - Lin, Victor SY AD - Department of Chemistry and US DOE Ames Laboratory, Iowa State University, Ames, IA 50011-3111, USA., vsylin@iastate.edu Y1 - 2007/02// PY - 2007 DA - Feb 2007 SP - 99 EP - 111 PB - Future Science Group (FSG), Unitec House, 2 Albert Place London N3 1QB United Kingdom VL - 2 IS - 1 SN - 1743-5889, 1743-5889 KW - Biotechnology and Bioengineering Abstracts KW - Biocompatibility KW - Channel pores KW - Controlled release KW - Drug delivery KW - Drug development KW - Drugs KW - Neurotransmitters KW - Particle size KW - Reviews KW - Silica KW - Surface area KW - nanoparticles KW - nanotechnology KW - W 30920:Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1017960768?accountid=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=Nanomedicine&rft.atitle=Mesoporous+silica+nanomaterial-based+biotechnological+and+biomedical+delivery+systems&rft.au=Giri%2C+Supratim%3BTrewyn%2C+Brian+G%3BLin%2C+Victor+SY&rft.aulast=Giri&rft.aufirst=Supratim&rft.date=2007-02-01&rft.volume=2&rft.issue=1&rft.spage=99&rft.isbn=&rft.btitle=&rft.title=Nanomedicine&rft.issn=17435889&rft_id=info:doi/10.2217%2F17435889.2.1.99 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-05-01 N1 - Number of references - 55 N1 - Last updated - 2012-06-01 N1 - SubjectsTermNotLitGenreText - Particle size; Drug delivery; Biocompatibility; Channel pores; Surface area; Drug development; Controlled release; Silica; Reviews; Neurotransmitters; nanoparticles; Drugs; nanotechnology DO - http://dx.doi.org/10.2217/17435889.2.1.99 ER - TY - JOUR T1 - Cobalt Ferrite Nanocrystals: Out-Performing Magnetotactic Bacteria AN - 20001242; 8019265 AB - Magnetotactic bacteria produce exquisitely ordered chains of uniform magnetite (Fe sub(3)O sub(4)) nanocrystals, and the use of the bacterial mms6 protein allows for the shape-selective synthesis of Fe sub(3)O sub(4) nanocrystals. Cobalt ferrite (CoFe sub(2)O sub(4)) nanoparticles, on the other hand, are not known to occur in living organisms. Here we report on the use of the recombinant mms6 protein in a templated synthesis of CoFe sub(2)O sub(4) nanocrystals in vitro. We have covalently attached the full-length mms6 protein and a synthetic C-terminal domain of mms6 protein to self-assembling polymers in order to template hierarchical CoFe sub(2)O sub(4) nanostructures. This new synthesis pathway enables facile room-temperature shape-specific synthesis of complex magnetic crystalline nanomaterials with particle sizes in the range of 40-100 nm that are difficult to produce using conventional techniques. JF - ACS Nano AU - Prozorov, Tanya AU - Palo, Pierre AU - Wang, Lijun AU - Nilsen-Hamilton, Marit AU - Jones, DeAnna AU - Orr, Daniel AU - Mallapragada, Surya AU - Narasimhan, Balaji AU - Canfield, Paul AU - Prozorov, Ruslan AD - Ames Laboratory, U.S. Department of Energy, Ames, Iowa 50011 Y1 - 2007///0, PY - 2007 DA - 0, 2007 SP - 228 EP - 233 PB - American Chemical Society, [mailto:service@acs.org] VL - 1 IS - 3 SN - 1936-0851, 1936-0851 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Microbiology Abstracts B: Bacteriology; Biotechnology and Bioengineering Abstracts KW - Particle size KW - Cobalt KW - Crystals KW - nanoparticles KW - magnetite KW - nanotechnology KW - W 30925:Genetic Engineering KW - A 01490:Miscellaneous KW - J 02330:Biochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20001242?accountid=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=ACS+Nano&rft.atitle=Cobalt+Ferrite+Nanocrystals%3A+Out-Performing+Magnetotactic+Bacteria&rft.au=Prozorov%2C+Tanya%3BPalo%2C+Pierre%3BWang%2C+Lijun%3BNilsen-Hamilton%2C+Marit%3BJones%2C+DeAnna%3BOrr%2C+Daniel%3BMallapragada%2C+Surya%3BNarasimhan%2C+Balaji%3BCanfield%2C+Paul%3BProzorov%2C+Ruslan&rft.aulast=Prozorov&rft.aufirst=Tanya&rft.date=2007-01-01&rft.volume=1&rft.issue=3&rft.spage=228&rft.isbn=&rft.btitle=&rft.title=ACS+Nano&rft.issn=19360851&rft_id=info:doi/10.1021%2Fnn700194h LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-03-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Particle size; Cobalt; Crystals; nanoparticles; nanotechnology; magnetite DO - http://dx.doi.org/10.1021/nn700194h ER - TY - JOUR T1 - Single-Molecule Detection of Surface-Hybridized Human Papilloma Virus DNA for Quantitative Clinical Screening AN - 19676639; 7986331 AB - We present an improved method to quantify viral DNA in human cells at the single- molecule level. Human papilloma virus (HPV)-16 DNA was hybridized to probes that were covalently bound to a glass surface and detected with a single-molecule imaging system. In the single-probe mode, the whole genome and target DNA were fluorescently labeled before hybridization. In the dual- probe mode, a second probe was introduced that has a fluorescently labeled 1- kb DNA strand connected to the 50-nt probe sequence. With the single-probe method, the detection limit was 0.7 copy/cell, which was similar to that reported in a flow system earlier. With the dual-probe method, the linear dynamic range covers 1.44-7000 copies/cell, which is typical of early infection to near-cancer stages. Both methods were applied to cell line samples with known HPV-16 infection, and the result showed a good match with the reported viral load. DNA from cervical cells, collected with the Pap smear sampling method, was spiked with HPV-16 DNA and submitted to this assay to show compatibility with conventional sampling methods. The dual-probe method was further tested with a crudely prepared sample. The cells were heat lyzed and spun down, and the supernatant was immediately submitted to hybridization. Even with reduced hybridization efficiency caused by the interference of cellular materials, we were still able to differentiate infected cells with 600 copies/cell from healthy cells. JF - Analytical Chemistry (Washington) AU - Lee, Ji-Young AU - Li, Jiangwei AU - Yeung, Edward S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011 Y1 - 2007 PY - 2007 DA - 2007 SP - 8083 EP - 8089 PB - American Chemical Society, Box 3337 Columbus OH 43210 USA, [mailto:service@acs.org] VL - 79 IS - 21 SN - 0003-2700, 0003-2700 KW - Biochemistry Abstracts 2: Nucleic Acids; Virology & AIDS Abstracts; Biotechnology and Bioengineering Abstracts KW - Genomes KW - Heat KW - DNA probes KW - Nucleotide sequence KW - DNA KW - Sampling KW - Infection KW - imaging KW - W 30910:Imaging KW - N 14810:Methods KW - V 22310:Genetics, Taxonomy & Structure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19676639?accountid=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=Analytical+Chemistry+%28Washington%29&rft.atitle=Single-Molecule+Detection+of+Surface-Hybridized+Human+Papilloma+Virus+DNA+for+Quantitative+Clinical+Screening&rft.au=Lee%2C+Ji-Young%3BLi%2C+Jiangwei%3BYeung%2C+Edward+S&rft.aulast=Lee&rft.aufirst=Ji-Young&rft.date=2007-01-01&rft.volume=79&rft.issue=21&rft.spage=8083&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%29&rft.issn=00032700&rft_id=info:doi/10.1021%2Fac071159y LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-03-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Genomes; Heat; Nucleotide sequence; DNA probes; DNA; Sampling; Infection; imaging DO - http://dx.doi.org/10.1021/ac071159y ER - TY - JOUR T1 - Control of antigen mass transfer via capture substrate rotation: An absolute method for the determination of viral pathogen concentration and reduction of heterogeneous immunoassay incubation times AN - 19383930; 7147685 AB - Immunosorbent assays are commonly employed as diagnostic tests in human healthcare, veterinary medicine and bioterrorism prevention. These assays, however, often require long incubation times, limiting sample throughput. As an approach to overcome this weakness, this paper examines the use of rotating capture substrates to increase the flux of antigen to the surface, thereby reducing the incubation time. To assess the capability of this approach, porcine parvovirus (PPV) was selectively extracted from solution by systematically varying the rotation rate of a gold substrate modified with a layer of anti-PPV monoclonal antibodies. The captured PPV were then directly imaged and quantified by atomic force microscopy. The benefits of substrate rotation are demonstrated by comparing an assay performed under stagnant conditions to one carried out with substrate rotation at 800rpm, both for 10min incubations at 25 super(o)C. The use of rotation lowered the limit of detection to 3.4x10 super(4)TCID sub(5) sub(0)/mL (~80fM) from 3.2x10 super(5)TCID sub(5) sub(0)/mL (~800fM) under stagnant conditions. Results are also presented that show this strategy can be used: (1) to determine antigen concentrations without standards and (2) to establish the numerical relationship between quantal concentration units (e.g., 50% tissue culture infective dose (TCID sub(5) sub(0))) and quantitative concentration units (e.g., viruses/mL) The potential to broadly apply this technique to heterogeneous immunoassays is also briefly discussed. JF - Journal of Virological Methods AU - Driskell, J D AU - Kwarta, K M AU - Lipert, R J AU - Vorwald, A AU - Neill, J D AU - Ridpath, J F AU - Porter, MD AD - Institute for Combinatorial Discovery, Departments of Chemistry and Chemical and Biological Engineering, The Ames Laboratory-USDOE, Ames, IA 50011-3020, United States, marc.porter@asu.edu Y1 - 2006/12// PY - 2006 DA - Dec 2006 SP - 160 EP - 169 PB - Elsevier B.V. VL - 138 IS - 1-2 SN - 0166-0934, 0166-0934 KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Virology & AIDS Abstracts KW - Veterinary medicine KW - Porcine parvovirus KW - bioterrorism KW - Monoclonal antibodies KW - atomic force microscopy KW - Gold KW - Pathogens KW - Tissue culture KW - Mass transfer KW - Immunoassays KW - Immunosorbents KW - V 22300:Methods KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19383930?accountid=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=Journal+of+Virological+Methods&rft.atitle=Control+of+antigen+mass+transfer+via+capture+substrate+rotation%3A+An+absolute+method+for+the+determination+of+viral+pathogen+concentration+and+reduction+of+heterogeneous+immunoassay+incubation+times&rft.au=Driskell%2C+J+D%3BKwarta%2C+K+M%3BLipert%2C+R+J%3BVorwald%2C+A%3BNeill%2C+J+D%3BRidpath%2C+J+F%3BPorter%2C+MD&rft.aulast=Driskell&rft.aufirst=J&rft.date=2006-12-01&rft.volume=138&rft.issue=1-2&rft.spage=160&rft.isbn=&rft.btitle=&rft.title=Journal+of+Virological+Methods&rft.issn=01660934&rft_id=info:doi/10.1016%2Fj.jviromet.2006.08.011 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Veterinary medicine; Monoclonal antibodies; bioterrorism; atomic force microscopy; Gold; Mass transfer; Tissue culture; Pathogens; Immunoassays; Immunosorbents; Porcine parvovirus DO - http://dx.doi.org/10.1016/j.jviromet.2006.08.011 ER - TY - JOUR T1 - Determining the modern carbon content of biobased products using radiocarbon analysis AN - 20860927; 6966075 AB - In support of the USDA Federal Biobased Products Preferred Procurement Program (FB4P), Iowa State University is coordinating testing to determine the "biobased content" of manufactured products. These tests are part of a process to "designate" items that qualify for preferential procurement status with federal agencies. Biobased content determinations are being performed using three radiocarbon dating procedures specified in ASTM D 6866-05. Test results obtained thus far indicate that the AMS and benzene synthesis methods provide comparable results. Data from the CO sub(2) cocktail method did not agree as well with the data from the other two methods, but were still in reasonably good agreement with those data. Radiocarbon analysis is shown to be a reliable and valuable tool for verifying the biobased content of a wide variety of biobased products. Based on inter- and intra-laboratory comparisons, a reasonable uncertainty to associate with the analyses would be +/-3% (absolute) for the AMS and benzene synthesis methods. Because of limited data availability, additional work is needed to establish the uncertainty of the CO sub(2) cocktail method for analyzing biobased products. JF - Bioresource Technology AU - Norton, Glenn A AU - Devlin, Steven L AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA, norton@ameslab.gov Y1 - 2006/11// PY - 2006 DA - Nov 2006 SP - 2084 EP - 2090 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 97 IS - 16 SN - 0960-8524, 0960-8524 KW - Biotechnology and Bioengineering Abstracts KW - Biobased products KW - Biobased content KW - Radiocarbon analysis KW - super(14)Carbon KW - Carbon dating KW - Data processing KW - Carbon KW - Dating KW - Carbon dioxide KW - Benzene KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20860927?accountid=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=Bioresource+Technology&rft.atitle=Determining+the+modern+carbon+content+of+biobased+products+using+radiocarbon+analysis&rft.au=Norton%2C+Glenn+A%3BDevlin%2C+Steven+L&rft.aulast=Norton&rft.aufirst=Glenn&rft.date=2006-11-01&rft.volume=97&rft.issue=16&rft.spage=2084&rft.isbn=&rft.btitle=&rft.title=Bioresource+Technology&rft.issn=09608524&rft_id=info:doi/10.1016%2Fj.biortech.2005.08.017 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-09-01 N1 - Last updated - 2015-03-27 N1 - SubjectsTermNotLitGenreText - Carbon; Data processing; Dating; Carbon dioxide; Benzene DO - http://dx.doi.org/10.1016/j.biortech.2005.08.017 ER - TY - JOUR T1 - Formation of fluorescent proteins by the attachment of phycoerythrobilin to R-phycoerythrin alpha and beta apo-subunits AN - 20168717; 7079246 AB - Formation of fluorescent proteins was explored after incubation of recombinant apo-subunits of phycobiliprotein R-phycoerythrin with phycoerythrobilin chromophore. Alpha and beta apo-subunit genes of R- phycoerythrin from red algae Polisiphonia boldii were cloned in plasmid pET- 21d(+). Hexahistidine-tagged alpha and beta apo-subunits were expressed in Escherichia coli. Although expressed apo-subunits formed inclusion bodies, fluorescent holo-subunits were constituted after incubation of E. coli cells with phycoerythrobilin. Holo-subunits contained both phycoerythrobilin and urobilin chromophores. Fluorescence and differential interference contrast microscopy showed polar location of holo-subunit inclusion bodies in bacterial cells. Cells containing fluorescent holo-subunits were several times brighter than control cells as found by fluorescence microscopy and flow cytometry. The addition of phycoerythrobilin to cells did not show cytotoxic effects, in contrast to expression of proteins in inclusion bodies. In an attempt to improve solubility, R-phycoerythrin apo-subunits were fused to maltose-binding protein and incubated with phycoerythrobilin both in vitro and in vivo. Highly fluorescent soluble fusion proteins containing phycoerythrobilin as the sole chromophore were formed. Fusion proteins were localized by fluorescence microscopy either throughout E. coli cells or at cell poles. Flow cytometry showed that cells containing fluorescent fusion proteins were up to 10 times brighter than control cells. Results indicate that fluorescent proteins formed by attachment of phycoerythrobilin to expressed apo-subunits of phycobiliproteins can be used as fluorescent probes for analysis of cells by microscopy and flow cytometry. A unique property of these fluorescent reporters is their utility in both properly folded (soluble) subunits and subunits aggregated in inclusion bodies. JF - Analytical Biochemistry AU - Isailovic, Dragan AU - Sultana, Ishrat AU - Phillips, Gregory J AU - Yeung, Edward S AD - Ames Laboratory-U.S. Department of Energy and Department of Chemistry, Iowa State University, Ames, IA 50011, USA, yeung@ameslab.gov Y1 - 2006/11// PY - 2006 DA - Nov 2006 SP - 38 EP - 50 PB - Elsevier Science B.V., P.O. Box 211 Amsterdam 1000 AE Netherlands, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl/] VL - 358 IS - 1 SN - 0003-2697, 0003-2697 KW - Microbiology Abstracts C: Algology, Mycology & Protozoology; Microbiology Abstracts B: Bacteriology KW - Fluorescence KW - Protein expression KW - Bacteria KW - Solubility KW - Chromophores KW - Plasmids KW - Phycobiliproteins KW - Flow cytometry KW - phycoerythrins KW - Cytotoxicity KW - Escherichia coli KW - Inclusion bodies KW - Fluorescent indicators KW - Fusion protein KW - maltose-binding protein KW - Algae KW - K 03410:Animal Diseases KW - J 02410:Animal Diseases UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20168717?accountid=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=Analytical+Biochemistry&rft.atitle=Formation+of+fluorescent+proteins+by+the+attachment+of+phycoerythrobilin+to+R-phycoerythrin+alpha+and+beta+apo-subunits&rft.au=Isailovic%2C+Dragan%3BSultana%2C+Ishrat%3BPhillips%2C+Gregory+J%3BYeung%2C+Edward+S&rft.aulast=Isailovic&rft.aufirst=Dragan&rft.date=2006-11-01&rft.volume=358&rft.issue=1&rft.spage=38&rft.isbn=&rft.btitle=&rft.title=Analytical+Biochemistry&rft.issn=00032697&rft_id=info:doi/10.1016%2Fj.ab.2006.08.011 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Flow cytometry; phycoerythrins; Cytotoxicity; Solubility; Fluorescent indicators; Inclusion bodies; Chromophores; Fusion protein; Plasmids; maltose-binding protein; Phycobiliproteins; Algae; Escherichia coli DO - http://dx.doi.org/10.1016/j.ab.2006.08.011 ER - TY - CPAPER T1 - UltraScale GAMESS: Lessons Learned Porting GAMESS to BlueGene/L T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39334552; 4359393 DE: JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Bode, Brett M Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39334552?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=UltraScale+GAMESS%3A+Lessons+Learned+Porting+GAMESS+to+BlueGene%2FL&rft.au=Bode%2C+Brett+M&rft.aulast=Bode&rft.aufirst=Brett&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Separation of Large DNA Molecules Based on Radial Migration in Capillary Electrophoresis T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39250388; 4354957 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Yeung, Edward S AU - Kang, Seong Ho AU - Zheng, Jinjian AU - Li, Hung-Wing Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Electrophoresis KW - Capillary electrophoresis KW - Cell migration KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39250388?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Separation+of+Large+DNA+Molecules+Based+on+Radial+Migration+in+Capillary+Electrophoresis&rft.au=Yeung%2C+Edward+S%3BKang%2C+Seong+Ho%3BZheng%2C+Jinjian%3BLi%2C+Hung-Wing&rft.aulast=Yeung&rft.aufirst=Edward&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Environmentally Friendly Nanoporous Oxide Catalysts for Biodiesel Synthesis T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39246803; 4358563 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Lin, Victor S-Y AU - Nieweg, Jennifer A AU - Kern, Carla AU - Trewyn, Brian G AU - Pruski, Marek AU - Wiench, Jerzy W Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Catalysts KW - Oxides KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39246803?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Environmentally+Friendly+Nanoporous+Oxide+Catalysts+for+Biodiesel+Synthesis&rft.au=Lin%2C+Victor+S-Y%3BNieweg%2C+Jennifer+A%3BKern%2C+Carla%3BTrewyn%2C+Brian+G%3BPruski%2C+Marek%3BWiench%2C+Jerzy+W&rft.aulast=Lin&rft.aufirst=Victor&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Zeolite-Like Intermetallic Frameworks with 1D Infinite Tunnels in Aau sub(4)In sub(2) and A sub(0.7)Au sub(2)In sub(2) T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39246254; 4359981 DE: JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Li, Bin AU - Corbett, John D Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39246254?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Zeolite-Like+Intermetallic+Frameworks+with+1D+Infinite+Tunnels+in+Aau+sub%284%29In+sub%282%29+and+A+sub%280.7%29Au+sub%282%29In+sub%282%29&rft.au=Li%2C+Bin%3BCorbett%2C+John+D&rft.aulast=Li&rft.aufirst=Bin&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Electrochemically Modulated Liquid Chromatographic Separation of Triazines and the Effect of pH on their Retention T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39235393; 4358490 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Yakes, Betsy Jean AU - Keller, David W AU - Porter, Marc D Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - PH KW - Triazine KW - PH effects KW - Abiotic factors KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39235393?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Electrochemically+Modulated+Liquid+Chromatographic+Separation+of+Triazines+and+the+Effect+of+pH+on+their+Retention&rft.au=Yakes%2C+Betsy+Jean%3BKeller%2C+David+W%3BPorter%2C+Marc+D&rft.aulast=Yakes&rft.aufirst=Betsy&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Multifunctional Mesoporous Silica Nanoparticles as Recyclable Heteronegeous Catalysts T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39231586; 4360065 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Chen, Hung-Ting AU - Trewyn, Brian G AU - Kumar, Rajeev AU - Wiench, Jerzy W AU - Pruski, Marek AU - Lin, Victor S-Y Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Catalysts KW - Silica KW - Nanoparticles KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39231586?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Multifunctional+Mesoporous+Silica+Nanoparticles+as+Recyclable+Heteronegeous+Catalysts&rft.au=Chen%2C+Hung-Ting%3BTrewyn%2C+Brian+G%3BKumar%2C+Rajeev%3BWiench%2C+Jerzy+W%3BPruski%2C+Marek%3BLin%2C+Victor+S-Y&rft.aulast=Chen&rft.aufirst=Hung-Ting&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Simulation Study of the Collapse of Langmuir Monolayers T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39223555; 4362842 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Lorenz, Christian D AU - Travesset, Alex AU - Vaknin, David AU - Bu, Wei Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Simulation KW - Monomolecular films KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39223555?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Simulation+Study+of+the+Collapse+of+Langmuir+Monolayers&rft.au=Lorenz%2C+Christian+D%3BTravesset%2C+Alex%3BVaknin%2C+David%3BBu%2C+Wei&rft.aulast=Lorenz&rft.aufirst=Christian&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Novel Detection Method for Mycobacterium Avium Subsp. Paratuberculosis using Surface-Enhanced Raman Scattering Based Immunoassays T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39219034; 4358473 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Jean-Yakes, Betsy AU - Lipert, Robert J AU - Bannantine, John P AU - Porter, Marc D Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Immunoassays KW - Paratuberculosis KW - Mycobacterium avium KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39219034?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Novel+Detection+Method+for+Mycobacterium+Avium+Subsp.+Paratuberculosis+using+Surface-Enhanced+Raman+Scattering+Based+Immunoassays&rft.au=Jean-Yakes%2C+Betsy%3BLipert%2C+Robert+J%3BBannantine%2C+John+P%3BPorter%2C+Marc+D&rft.aulast=Jean-Yakes&rft.aufirst=Betsy&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Imaging of Plant and Animal Tissues by Direct Laser Desorption/Ionization Mass Spectrometry T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39218438; 4355075 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Yeung, Edward S AU - Cha, Sangwon AU - Zhang, Hui AU - Sluszny, Chanan AU - Nikolau, Basil Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Mass spectroscopy KW - Lasers KW - Desorption KW - Imaging techniques KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39218438?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Imaging+of+Plant+and+Animal+Tissues+by+Direct+Laser+Desorption%2FIonization+Mass+Spectrometry&rft.au=Yeung%2C+Edward+S%3BCha%2C+Sangwon%3BZhang%2C+Hui%3BSluszny%2C+Chanan%3BNikolau%2C+Basil&rft.aulast=Yeung&rft.aufirst=Edward&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Identification and Characterization of Aqueous Ferryl(IV) Ion T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39215864; 4358155 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Pestovsky, Oleg AU - Bakac, Andreja Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Wastewater treatment KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39215864?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Identification+and+Characterization+of+Aqueous+Ferryl%28IV%29+Ion&rft.au=Pestovsky%2C+Oleg%3BBakac%2C+Andreja&rft.aulast=Pestovsky&rft.aufirst=Oleg&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Existence of Multiple Conformations of an Enzyme in Solution T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39209605; 4355724 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Yeung, Edward S AU - Li, Fenglei AU - Xu, Aoshuang AU - Xue, Qifeng Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Enzymes KW - Conformation KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39209605?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Existence+of+Multiple+Conformations+of+an+Enzyme+in+Solution&rft.au=Yeung%2C+Edward+S%3BLi%2C+Fenglei%3BXu%2C+Aoshuang%3BXue%2C+Qifeng&rft.aulast=Yeung&rft.aufirst=Edward&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Extrinsic Raman Labels for SERS Readout in Immunosorbent Assays: Cubic and Spherical Gold Nanoparticles T2 - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AN - 39175017; 4358471 JF - 2006 Meeting and Exposition of the American Chemical Society (ACS 06) AU - Narayanan, Radha AU - Lipert, Robert J AU - Porter, Marc D Y1 - 2006/09/10/ PY - 2006 DA - 2006 Sep 10 KW - Gold KW - Immunoassays KW - Nanoparticles KW - Immunosorbents KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39175017?accountid=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=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.atitle=Extrinsic+Raman+Labels+for+SERS+Readout+in+Immunosorbent+Assays%3A+Cubic+and+Spherical+Gold+Nanoparticles&rft.au=Narayanan%2C+Radha%3BLipert%2C+Robert+J%3BPorter%2C+Marc+D&rft.aulast=Narayanan&rft.aufirst=Radha&rft.date=2006-09-10&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2006+Meeting+and+Exposition+of+the+American+Chemical+Society+%28ACS+06%29&rft.issn=&rft_id=info:doi/ L2 - http://oasys.acs.org/acs/232nm/techprogram/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-05 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Selenium as possible indicator of asteroidal differentiation AN - 51079976; 2008-086067 JF - Meteoritics & Planetary Science AU - Kracher, A AU - Anonymous Y1 - 2006/08// PY - 2006 DA - August 2006 SP - 1 PB - Meteoritical Society, Fayetteville, AR VL - 41, Supplement SN - 1086-9379, 1086-9379 KW - segregation KW - asteroids KW - selenium KW - iron-nickel metal KW - igneous rocks KW - differentiation KW - solubility KW - iron KW - partitioning KW - meteorites KW - iron meteorites KW - metals KW - magmas KW - sulfur KW - core KW - fractional crystallization KW - sulfides KW - 05B:Petrology of meteorites and tektites UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51079976?accountid=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=Selenium+as+possible+indicator+of+asteroidal+differentiation&rft.au=Kracher%2C+A%3BAnonymous&rft.aulast=Kracher&rft.aufirst=A&rft.date=2006-08-01&rft.volume=41%2C+Supplement&rft.issue=&rft.spage=A100&rft.isbn=&rft.btitle=&rft.title=Meteoritics+%26+Planetary+Science&rft.issn=10869379&rft_id=info:doi/ L2 - http://cavern.uark.edu/~meteor/ LA - English DB - GeoRef N1 - Conference title - 69th annual meeting of the Meteoritical Society N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2008-01-01 N1 - Number of references - 2 N1 - PubXState - AR N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - asteroids; core; differentiation; fractional crystallization; igneous rocks; iron; iron meteorites; iron-nickel metal; magmas; metals; meteorites; partitioning; segregation; selenium; solubility; sulfides; sulfur ER - TY - JOUR T1 - Evaluation of a Preclinical Blood Test for Scrapie in Sheep Using Immunocapillary Electrophoresis AN - 19383854; 7150352 AB - An analytical method is described for detection of endogenous disease-associated prion protein in the buffy coat fraction from the blood of sheep infected with scrapie. The method has been improved and evaluated for its performance in the preclinical diagnosis of ovine transmissible spongiform encephalopathies. The test system uses a protocol for sample preparation that includes extraction and concentration and a test method that uses a liquid-phase competitive immunoassay for prion protein. Antibodies directed to a peptide sequence at the C-terminus of the prion protein (PrP) and a fluorescein-labeled peptide conjugate are used in the assay. Free zone capillary electrophoresis with laser-induced fluorescence for detection is used to separate the antibody-bound fluorescently labeled peptide and free labeled peptide. In this assay, the PrP competes with the fluorescently labeled peptide for limited antibody binding sites, which results in a reduction of the peak representing the immunocomplex of the antibody bound to the fluorescently labeled peptide. When blood samples from scrapie-infected sheep aged 7-12 months and of the scrapie-susceptible PrP genotypes VRQ/VRQ and VRQ/ARQ were analyzed, the abnormal PrP was found in blood samples. These results correlated with the post-mortem diagnosis of scrapie. The sheep were preclinical and appeared normal at the time of testing but later died with clinical disease approximately 12 months after testing. In older animals, and those with clinical signs, a smaller percentage of animals tested positive. This study has demonstrated that this technology can be used as a sensitive, rapid preclinical test to detect the disease-associated PrP in the blood of scrapie-infected sheep. Improvements in the extraction protocol and capillary electrophoresis conditions will enhance the robustness of this test. JF - Journal of AOAC International AU - Jackman, R AU - Everest, D J AU - Schmerr, MJ AU - Khawaja, M AU - Keep, P AU - Docherty, J AD - Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, IA 50011, USA, mschmerr@ameslab.gov Y1 - 2006/06// PY - 2006 DA - Jun 2006 SP - 720 EP - 727 VL - 89 IS - 3 SN - 1060-3271, 1060-3271 KW - Microbiology Abstracts A: Industrial & Applied Microbiology KW - Transmissible spongiform encephalopathy KW - Antibodies KW - Fluorescence KW - C-Terminus KW - Prion protein KW - capillary electrophoresis KW - Buffy coat KW - Scrapie KW - Genotypes KW - Immunoassays KW - A 01300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19383854?accountid=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=Journal+of+AOAC+International&rft.atitle=Evaluation+of+a+Preclinical+Blood+Test+for+Scrapie+in+Sheep+Using+Immunocapillary+Electrophoresis&rft.au=Jackman%2C+R%3BEverest%2C+D+J%3BSchmerr%2C+MJ%3BKhawaja%2C+M%3BKeep%2C+P%3BDocherty%2C+J&rft.aulast=Jackman&rft.aufirst=R&rft.date=2006-06-01&rft.volume=89&rft.issue=3&rft.spage=720&rft.isbn=&rft.btitle=&rft.title=Journal+of+AOAC+International&rft.issn=10603271&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-12-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Transmissible spongiform encephalopathy; Antibodies; Fluorescence; C-Terminus; Buffy coat; capillary electrophoresis; Prion protein; Genotypes; Scrapie; Immunoassays ER - TY - JOUR T1 - Rapid screening of pathogenic bacteria using solid phase concentration and diffuse reflectance spectroscopy AN - 19922824; 6839746 AB - A new methodology to rapidly screen for pathogenic bacteria in various liquids (e.g., potable water and juice) is described. It combines the selectivity of dye-labeled antibodies, the sample concentration capability of solid phase membrane filtration, and the facile readout of the concentrated, dye-labeled microorganisms by diffuse reflectance spectroscopy (DRS). Details about the selection of the most effective membrane filter, detection of target bacteria in different types of liquids, and evaluation of assay specificity in screening for E. coli O157:H7 are discussed. For this pathogen, the technique has a working range of 5 x 10 super(5) to 5 x 10 super(8) cells/mL and an overall work up time of 45 min. The amount of captured bacteria is directly determined in only 2 s by using a hand-held DRS instrument via comparisons to a calibration curve based on the Kubelka-Munk function. Overall, this assay system offers high speed, simplicity, and low cost, making it a potential alternative for screening of several types of bacterial contaminated samples in almost any location. JF - Analytica Chimica Acta AU - Rahman, Salma AU - Lipert, Robert J AU - Porter, Marc D AD - Institute of Combinatorial Discovery, Ames Laboratory-USDOE, and Departments of Chemistry and of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011, USA, mporter@porterl.ameslab.gov Y1 - 2006/05// PY - 2006 DA - May 2006 SP - 83 EP - 90 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:usinfo-f@elsevier.com], [URL:http://www.elsevier.nl] VL - 569 IS - 1-2 SN - 0003-2670, 0003-2670 KW - Microbiology Abstracts B: Bacteriology; Microbiology Abstracts A: Industrial & Applied Microbiology KW - Rapid detection KW - Pathogenic bacteria KW - E. coli O157:H7 KW - Solid phase extraction KW - Diffuse reflectance spectroscopy KW - Filters KW - Antibodies KW - Reflectance KW - Escherichia coli KW - Membrane filtration KW - Juices KW - Microorganisms KW - Pathogens KW - Spectroscopy KW - Drinking water KW - A 01116:Bacteria KW - J 02300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19922824?accountid=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=Analytica+Chimica+Acta&rft.atitle=Rapid+screening+of+pathogenic+bacteria+using+solid+phase+concentration+and+diffuse+reflectance+spectroscopy&rft.au=Rahman%2C+Salma%3BLipert%2C+Robert+J%3BPorter%2C+Marc+D&rft.aulast=Rahman&rft.aufirst=Salma&rft.date=2006-05-01&rft.volume=569&rft.issue=1-2&rft.spage=83&rft.isbn=&rft.btitle=&rft.title=Analytica+Chimica+Acta&rft.issn=00032670&rft_id=info:doi/10.1016%2Fj.aca.2006.03.083 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-08-01 N1 - Last updated - 2015-03-25 N1 - SubjectsTermNotLitGenreText - Filters; Antibodies; Reflectance; Microorganisms; Juices; Membrane filtration; Pathogens; Drinking water; Spectroscopy; Escherichia coli DO - http://dx.doi.org/10.1016/j.aca.2006.03.083 ER - TY - JOUR T1 - Flow-through partial-filling affinity capillary electrophoresis using a crossreactive antibody for enantiomeric separations AN - 20400885; 7762343 AB - It is demonstrated that the separation of diastereoisomers and enantiomers can be accomplished by the flow-through partial-filling affinity CE using a crossreactive mAb. This approach revealed differences in the binding strength of the (-)-cis- and (-)-trans-benzo[a]pyrene tetrols with the anti-polycyclic aromatic hydrocarbon mAb and demonstrated that (+)-enantiomers are more strongly immunocomplexed than their (-)-counterparts. It is proposed that crossreactive monoclonal antibodies (i.e.mAb raised against achiral molecule and possessing limited selectivity) could be effectively utilized for specific stereoisomeric differentiation and chiral separations. JF - Electrophoresis AU - Grubor, Nenad M AU - Armstrong, Daniel W AU - Jankowiak, Ryszard AD - Ames Laboratory - USDOE, Department of Chemistry, Iowa State University, Ames, Iowa, IA, USA, ryszard@ksu.edu Y1 - 2006/03// PY - 2006 DA - Mar 2006 SP - 1078 EP - 1083 PB - Wiley-VCH, Postfach 101161 Weinheim 69451 Germany, [mailto:info@wiley-vch.de], [URL:http://www.wiley-vch.de/publish/en/] VL - 27 IS - 5-6 SN - 0173-0835, 0173-0835 KW - Biotechnology and Bioengineering Abstracts KW - Diastereoisomers KW - Differentiation KW - Enantiomers KW - Monoclonal antibodies KW - capillary electrophoresis KW - Aromatic hydrocarbons KW - W 30900:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20400885?accountid=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=Electrophoresis&rft.atitle=Flow-through+partial-filling+affinity+capillary+electrophoresis+using+a+crossreactive+antibody+for+enantiomeric+separations&rft.au=Grubor%2C+Nenad+M%3BArmstrong%2C+Daniel+W%3BJankowiak%2C+Ryszard&rft.aulast=Grubor&rft.aufirst=Nenad&rft.date=2006-03-01&rft.volume=27&rft.issue=5-6&rft.spage=1078&rft.isbn=&rft.btitle=&rft.title=Electrophoresis&rft.issn=01730835&rft_id=info:doi/10.1002%2Felps.200500660 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-12-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Monoclonal antibodies; Enantiomers; Diastereoisomers; capillary electrophoresis; Differentiation; Aromatic hydrocarbons DO - http://dx.doi.org/10.1002/elps.200500660 ER - TY - JOUR T1 - Principles and applications of colorimetric solid-phase extraction with negligible depletion AN - 21138620; 6659409 AB - Colorimetric solid-phase extraction (C-SPE) is an integrated technique in which an analyte is selectively concentrated onto a disk and then quantitated by diffuse reflectance spectroscopy. This paper describes the results of an investigation that applies the concept of negligible depletion (ND) to C-SPE, representing the first application of ND concepts to solid-phase extractions. The approach relies on passing the minimal volume of sample through the disk required to reach an equilibrium in which the concentration of analyte in the sample entering and exiting the disk are equal. At this point, the amount of analyte extracted by the disk is proportional to the sample concentration but is independent of the sample volume passed through the disk. With this new method, called C-SPE/ND, the precise measurement of sample volume is no longer necessary. The work herein details the general principles of this new methodology, and validates its basic tenets in an investigation of the extraction of the organic dye methyl violet. The analytical capabilities of C- SPE/ND are then demonstrated by its application to measurements of iodine. Iodine is a biocide increasingly used as a simple and effective disinfectant for water in locations where municipal water treatment systems are potentially compromised. Thus, the ability to operate C-SPE in an ND mode notably enhances the broad-based utility of this methodology as a reliable and an easy-to-use analysis tool for water quality assessments. Since iodine is also the biocide used on NASAs Space Shuttle, C-SPE/ND has the potential to overcome problems associated with the removal of air bubbles entrapped in a water sample in the microgravity environment encountered in space exploration. Extensions of C- SPE/ND to facile determinations of other water quality parameters with respect to both earth- and space-based needs are briefly discussed. JF - Analytica Chimica Acta AU - Dias, Neil C AU - Porter, Marc D AU - Fritz, James S AD - Institute for Combinatorial Discovery, Ames Laboratory-U.S. Department of Energy, Department of Chemistry, Iowa State University, Ames, IA 50011, USA, mporter@porter1.ameslab.gov Y1 - 2006/02/03/ PY - 2006 DA - 2006 Feb 03 SP - 230 EP - 236 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:usinfo-f@elsevier.com], [URL:http://www.elsevier.nl] VL - 558 IS - 1-2 SN - 0003-2670, 0003-2670 KW - Pollution Abstracts KW - C-SPE KW - Negligible depletion KW - Spectrophotometry KW - Solid-phase extraction KW - Water analysis KW - Iodine KW - water quality KW - Disinfectants KW - Water sampling KW - Municipal water supplies KW - Biocides KW - Spectroscopy KW - USA, Connecticut, Hartford Basin, Newark Supergroup, Shuttle KW - space shuttle KW - P 2000:FRESHWATER POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/21138620?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Analytica+Chimica+Acta&rft.atitle=Principles+and+applications+of+colorimetric+solid-phase+extraction+with+negligible+depletion&rft.au=Dias%2C+Neil+C%3BPorter%2C+Marc+D%3BFritz%2C+James+S&rft.aulast=Dias&rft.aufirst=Neil&rft.date=2006-02-03&rft.volume=558&rft.issue=1-2&rft.spage=230&rft.isbn=&rft.btitle=&rft.title=Analytica+Chimica+Acta&rft.issn=00032670&rft_id=info:doi/10.1016%2Fj.aca.2005.11.014 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-12-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - water quality; Disinfectants; Water sampling; Municipal water supplies; Iodine; Biocides; Spectroscopy; space shuttle; USA, Connecticut, Hartford Basin, Newark Supergroup, Shuttle DO - http://dx.doi.org/10.1016/j.aca.2005.11.014 ER - TY - JOUR T1 - Dynamics of the trimeric AcrB transporter protein inferred from a B-factor analysis of the crystal structure. AN - 67582080; 16288462 AB - The Escherichia coli AcrB multidrug transporter recognizes a wide range of toxic chemicals and actively extrudes them from cells. The molecular basis of multidrug transport in AcrB remains unknown. Herein, we describe normal mode analyses to study important regions for drug recognition and extrusion in this transporter. Based on the X-ray structure of AcrB, an elastic network model has been able to correct errors arising from crystal imperfection in the experimental B-factors. The results allow us to understand the functional dynamics of this membrane protein. It is expected that this technique can be applied to other membrane proteins with known structures. JF - Proteins AU - Lu, W C AU - Wang, C Z AU - Yu, E W AU - Ho, K M AD - Ames Laboratory-U.S. DOE, Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA. Y1 - 2006/01/01/ PY - 2006 DA - 2006 Jan 01 SP - 152 EP - 158 VL - 62 IS - 1 KW - AcrB protein, E coli KW - 0 KW - Escherichia coli Proteins KW - Macromolecular Substances KW - Membrane Proteins KW - Multidrug Resistance-Associated Proteins KW - Index Medicus KW - Models, Molecular KW - Membrane Proteins -- chemistry KW - Crystallography KW - Crystallography, X-Ray KW - Macromolecular Substances -- chemistry KW - Protein Conformation KW - Escherichia coli Proteins -- chemistry KW - Escherichia coli Proteins -- metabolism KW - Multidrug Resistance-Associated Proteins -- metabolism KW - Multidrug Resistance-Associated Proteins -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/67582080?accountid=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=Proteins&rft.atitle=Dynamics+of+the+trimeric+AcrB+transporter+protein+inferred+from+a+B-factor+analysis+of+the+crystal+structure.&rft.au=Lu%2C+W+C%3BWang%2C+C+Z%3BYu%2C+E+W%3BHo%2C+K+M&rft.aulast=Lu&rft.aufirst=W&rft.date=2006-01-01&rft.volume=62&rft.issue=1&rft.spage=152&rft.isbn=&rft.btitle=&rft.title=Proteins&rft.issn=1097-0134&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2006-03-31 N1 - Date created - 2005-12-19 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Proteins. 2000 Aug 15;40(3):512-24 [10861943] J Bacteriol. 2005 Oct;187(19):6804-15 [16166543] J Bacteriol. 2000 Aug;182(15):4264-7 [10894736] Mol Microbiol. 2000 Jul;37(2):219-25 [10931319] Biophys J. 2001 Jan;80(1):505-15 [11159421] Biophys J. 2002 Aug;83(2):723-32 [12124259] J Mol Biol. 2002 Jul 26;320(5):1011-24 [12126621] Nature. 2002 Oct 10;419(6907):587-93 [12374972] Science. 2003 May 9;300(5621):976-80 [12738864] Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Apr;67(4 Pt 1):041909 [12786398] J Bacteriol. 2003 Oct;185(19):5657-64 [13129936] Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Jun;69(6 Pt 1):061920 [15244630] J Mol Biol. 1986 Jul 20;190(2):227-54 [3795269] Acta Crystallogr A. 1990 Jun 1;46 ( Pt 6):425-35 [1694442] J Bacteriol. 1996 Oct;178(20):5853-9 [8830678] Fold Des. 1997;2(3):173-81 [9218955] Biochemistry. 1998 Jan 27;37(4):1067-75 [9454598] Protein Sci. 2005 Mar;14(3):633-43 [15722444] Nature. 2000 Jun 22;405(6789):914-9 [10879525] N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Ultrasensitive native fluorescence detection of proteins with miniaturized polyacrylamide gel electrophoresis by laser side-entry excitation AN - 19776638; 7072793 AB - Direct detection of separated proteins inside polyacrylamide gels has many advantages compared to staining methods. Ultrasensitive native fluorescence detection of proteins with miniaturized 1-D and 2-D PAGE was achieved with laser side-entry excitation. The detection limit for R-phycoerythrin protein spots in 1-D SDS-PAGE with 532 nm excitation was as low as 15 fg, which corresponds to only 40 000 molecules. The average detection limit of six standard native proteins was 5 pg per band with 275 nm excitation. The dynamic range spanned more than three orders of magnitude. By using the same detection setup, approximately 150 protein spots from 30 ng of total Escherichia coli extraction were detected on a 0.8 cmX1 cm gel in 2-D separation. The significant improvement in sensitivity for laser side-entry excitation comes from higher excitation power and lower background level compared with other excitation modes. JF - Electrophoresis AU - Zhang, Hui AU - Yeung, Edward S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, IA, USA, yeung@ameslab.gov Y1 - 2006 PY - 2006 DA - 2006 SP - 3609 EP - 3618 PB - Wiley-VCH, Postfach 101161 Weinheim 69451 Germany, [mailto:info@wiley-vch.de], [URL:http://www.wiley-vch.de/publish/en/] VL - 27 IS - 18 SN - 0170-0835, 0170-0835 KW - Microbiology Abstracts B: Bacteriology KW - 1-D and 2-D gel electrophoresis KW - Fluorescence detection KW - Laser side-entry excitation KW - SDS-PAGE KW - Fluorescence KW - Background levels KW - Escherichia coli KW - Lasers KW - Gel electrophoresis KW - J 02300:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19776638?accountid=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=Electrophoresis&rft.atitle=Ultrasensitive+native+fluorescence+detection+of+proteins+with+miniaturized+polyacrylamide+gel+electrophoresis+by+laser+side-entry+excitation&rft.au=Zhang%2C+Hui%3BYeung%2C+Edward+S&rft.aulast=Zhang&rft.aufirst=Hui&rft.date=2006-01-01&rft.volume=27&rft.issue=18&rft.spage=3609&rft.isbn=&rft.btitle=&rft.title=Electrophoresis&rft.issn=01700835&rft_id=info:doi/10.1002%2Felps.200600020 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Fluorescence; Background levels; Lasers; Gel electrophoresis; Escherichia coli DO - http://dx.doi.org/10.1002/elps.200600020 ER - TY - CPAPER T1 - New Molecular Spin Arrays from Functionalized Polyoxomolybdates and -Vanadates T2 - 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005) AN - 39870662; 4067013 DE: JF - 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005) AU - Koegerler, P AU - Luban, M Y1 - 2005/12/15/ PY - 2005 DA - 2005 Dec 15 KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39870662?accountid=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=2005+International+Chemical+Congress+of+Pacific+Basin+Societies+%28PACIFICHEM+2005%29&rft.atitle=New+Molecular+Spin+Arrays+from+Functionalized+Polyoxomolybdates+and+-Vanadates&rft.au=Koegerler%2C+P%3BLuban%2C+M&rft.aulast=Koegerler&rft.aufirst=P&rft.date=2005-12-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2005+International+Chemical+Congress+of+Pacific+Basin+Societies+%28PACIFICHEM+2005%29&rft.issn=&rft_id=info:doi/ L2 - http://www.pacifichem.org/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-05-21 N1 - Last updated - 2010-05-03 ER - TY - CPAPER T1 - Strategies for the Design and Readout of Ultrahigh Density Immunodiagnostic Platforms T2 - 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005) AN - 39721544; 4059048 DE: JF - 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005) AU - Park, H AU - Driskell, J AU - Kwarta, K AU - Yates, B AU - Uhlenkamp, J AU - Millen, R AU - Pekas, N AU - Nordling, J AU - Lipert, R J AU - Porter, M D Y1 - 2005/12/15/ PY - 2005 DA - 2005 Dec 15 KW - U 7000:Multidisciplinary UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/39721544?accountid=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=2005+International+Chemical+Congress+of+Pacific+Basin+Societies+%28PACIFICHEM+2005%29&rft.atitle=Strategies+for+the+Design+and+Readout+of+Ultrahigh+Density+Immunodiagnostic+Platforms&rft.au=Park%2C+H%3BDriskell%2C+J%3BKwarta%2C+K%3BYates%2C+B%3BUhlenkamp%2C+J%3BMillen%2C+R%3BPekas%2C+N%3BNordling%2C+J%3BLipert%2C+R+J%3BPorter%2C+M+D&rft.aulast=Park&rft.aufirst=H&rft.date=2005-12-15&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=2005+International+Chemical+Congress+of+Pacific+Basin+Societies+%28PACIFICHEM+2005%29&rft.issn=&rft_id=info:doi/ L2 - http://www.pacifichem.org/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-05-21 N1 - Last updated - 2010-05-03 ER - TY - CONF T1 - A prototype of automated two-dimensional gel electrophoresis of proteins with native fluorescence detection AN - 19436262; 6724976 AB - Two-dimensional gel electrophoresis practitioners have long waited for a fully automated system. We here present an integrated platform that is capable of complete automation from sample introduction to spots detection. The strip gel for the first-dimensional separation is fixed on the edge of a discrete planar stage before separation. A pair of platinum pin electrodes for isoelectric focusing (IEF) makes contact from underneath the stage. IEF is performed directly after rehydration and protein loading. After the first-dimensional separation, SDS equilibration is done on the same stage without moving the gel. The IEF stage is then moved horizontally to couple with a precast second-dimensional gel. The gap between the two gels less than 0.5 mm, is filled with poly (ethylene oxide) solution. After SDS-PAGE separation, a CCD camera is used to detect spots via protein native fluorescence excited by a Hg (Xe) lamp with the gel inside the running cell. Potential for full automation is demonstrated with 0.5 mu g of Esherichia coli proteins on this miniaturized platform. More than 240 spots are detected in a total experiment time of less than 2.5 hours. JF - Journal of Automated Methods and Management in Chemistry AU - Xu, A AU - Yeung, E S Y1 - 2005/10/24/ PY - 2005 DA - 2005 Oct 24 SP - 193 PB - Hindawi Publishing Corporation, P.O. Box 3079 Cuyahoga Falls OH 44223 USA, [URL:http://jammc.hindawi.com] VL - 2005 IS - 3 KW - Biotechnology and Bioengineering Abstracts KW - polyethylene oxide KW - Rehydration KW - Fluorescence KW - Cameras KW - Electrodes KW - Platinum KW - Sodium lauryl sulfate KW - Automation KW - Isoelectric focusing KW - Gel electrophoresis KW - W 30900:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19436262?accountid=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+Automated+Methods+and+Management+in+Chemistry&rft.atitle=A+prototype+of+automated+two-dimensional+gel+electrophoresis+of+proteins+with+native+fluorescence+detection&rft.au=Xu%2C+A%3BYeung%2C+E+S&rft.aulast=Xu&rft.aufirst=A&rft.date=2005-10-24&rft.volume=2005&rft.issue=3&rft.spage=193&rft.isbn=&rft.btitle=&rft.title=Journal+of+Automated+Methods+and+Management+in+Chemistry&rft.issn=14639246&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 ER - TY - CONF T1 - Molecular identification at the single-molecule level for disease diagnosis AN - 19434686; 6724926 AB - The electrophoretic mobilities of individual DNA molecules can be determined at the rate of up to 2500 every 25 milliseconds by using fluorescence imaging. The average mobility agreed well with that obtained in capillary electrophoresis (CE). The signal-to-noise ratio (S/N) did not decrease in the presence of up to 8% plasma or 8% raw blood. Single-molecule detection was still possible in the presence of 50% raw blood. Single-molecule CE of two differently labeled molecules was carried out in the presence of a transmission grating. Even when the mobility difference is not sufficient because of low S/N, identification using different fluorescence wavelengths can be performed at more than 99% accuracy. So, when small differences in DNA sequence due to disease or mutation can lead to hybridization to labels with different dyes, the screening of the mutated DNA will be facilitated by on-line spectroscopy in addition to the electrophoretic information from CE. JF - Journal of Automated Methods and Management in Chemistry AU - Yeung, E S AU - Lee, J-Y AU - Li, H-W Y1 - 2005/10/24/ PY - 2005 DA - 2005 Oct 24 SP - 84 PB - Hindawi Publishing Corporation, P.O. Box 3079 Cuyahoga Falls OH 44223 USA, [URL:http://jammc.hindawi.com] VL - 2005 IS - 3 KW - Biotechnology and Bioengineering Abstracts KW - Blood KW - Fluorescence KW - Dyes KW - Nucleotide sequence KW - capillary electrophoresis KW - Automation KW - Wavelength KW - Spectroscopy KW - Electrophoretic mobility KW - Mutation KW - imaging KW - W 30900:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19434686?accountid=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+Automated+Methods+and+Management+in+Chemistry&rft.atitle=Molecular+identification+at+the+single-molecule+level+for+disease+diagnosis&rft.au=Yeung%2C+E+S%3BLee%2C+J-Y%3BLi%2C+H-W&rft.aulast=Yeung&rft.aufirst=E&rft.date=2005-10-24&rft.volume=2005&rft.issue=3&rft.spage=84&rft.isbn=&rft.btitle=&rft.title=Journal+of+Automated+Methods+and+Management+in+Chemistry&rft.issn=14639246&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 ER - TY - JOUR T1 - Real-time monitoring of adsorption and retention of DNA on patterned self-assembled monolayers (SAMS) using total internal reflection fluorescence microscopy (TIRFM) AN - 19431501; 6724969 AB - Molecular interactions of biomolecules on compositionally functionalized surfaces at the solid-liquid interface are central to the development and application of DNA, protein, and small-molecule microarrays. Patterning self-assembled monolayers (SAMs) on a gold surface is one of the most widely used methods in creating these microarrays, and there have been numerous investigations of the preferential adsorption and localization of proteins, cells, and DNA on these materials. However, very little work has been done to examine interactions at the single-molecule level at these patterned interfaces. This presentation describes an investigation using YOYO-labeled DNA and patterned SAMs on optically transparent gold and total internal reflection fluorescence microscopy (TIRFM) for the real-time detection of single-molecule DNA adsorption. The experiments monitor the binding of YOYO-DNA to patterned SAM surfaces that are excited by an evanescent wave generated by Ar super(+)(488 nm) laser on the surface of a silica prism. We therefore monitored the interaction of DNA at compositionally patterned SAM surfaces that were formed from alkanethiols with -COOH, -OH, and NH2 terminal groups in solutions of varied pH and buffering capacity. Results show that the localization and magnitude of the interaction between DNA and the surface can be manipulated by changing pH. JF - Journal of Automated Methods and Management in Chemistry AU - Park, H-Y AU - Li, H AU - Porter, MD AU - Yeung, E S AD - Ames Laboratory, Department of Chemistry, Institute for Combinatoriai Discovery, Iowa State University USDOE, Ames, IA 50011-3020, USA Y1 - 2005/10/24/ PY - 2005 DA - 2005 Oct 24 SP - 182 PB - Hindawi Publishing Corporation, P.O. Box 3079 Cuyahoga Falls OH 44223 USA, [URL:http://jammc.hindawi.com] VL - 2005 IS - 3 SN - 1463-9246, 1463-9246 KW - Biochemistry Abstracts 2: Nucleic Acids; Biotechnology and Bioengineering Abstracts KW - Fluorescence KW - Silica KW - Protein arrays KW - DNA KW - Adsorption KW - Gold KW - Automation KW - Lasers KW - Waves KW - pH effects KW - Pattern formation KW - N 14810:Methods KW - W 30900:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19431501?accountid=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=conference&rft.jtitle=Journal+of+Automated+Methods+and+Management+in+Chemistry&rft.atitle=Real-time+monitoring+of+adsorption+and+retention+of+DNA+on+patterned+self-assembled+monolayers+%28SAMS%29+using+total+internal+reflection+fluorescence+microscopy+%28TIRFM%29&rft.au=Park%2C+H-Y%3BLi%2C+H%3BPorter%2C+MD%3BYeung%2C+E+S&rft.aulast=Park&rft.aufirst=H-Y&rft.date=2005-10-24&rft.volume=2005&rft.issue=3&rft.spage=182&rft.isbn=&rft.btitle=&rft.title=Journal+of+Automated+Methods+and+Management+in+Chemistry&rft.issn=14639246&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2015-04-01 N1 - SubjectsTermNotLitGenreText - Silica; Fluorescence; Protein arrays; Adsorption; DNA; Automation; Gold; Waves; Lasers; pH effects; Pattern formation ER - TY - JOUR T1 - Giant Magnetoresistive Sensors and Superparamagnetic Nanoparticles: A Chip-Scale Detection Strategy for Immunosorbent Assays AN - 19418630; 6538316 AB - Thin structures of alternating magnetic and nonmagnetic layers with a total thickness of a few hundred nanometers exhibit a phenomenon known as giant magnetoresistance. The resistance of microfabricated giant magnetoresistors (GMRs) is dependent on the strength of an external magnetic field. This paper examines magnetic labeling methodologies and surface derivatization approaches based on protein-protein binding that are aimed at forming a general set of protocols to move GMR concepts into the bioanalytical arena. As such, GMRs have been used to observe and quantify the immunological interaction between surface-bound mouse IgG and alpha -mouse IgG coated on superparamagnetic particles. Results show the response of a GMR network connected together as a set of two sense GMRs and two reference GMRs in a Wheatstone bridge as a means to compensate for temperature effects. The response can be readily correlated to the amount of the magnetically labeled alpha -mouse IgG that is captured by an immobilized layer of mouse IgG, the presence of which is confirmed with X-ray photoelectron spectroscopy and atomic force microscopy. These results, along with a detailed description of the experimental testing platform, are described in terms of sensitivity, detection limits, and potential for multiplexing. JF - Analytical Chemistry (Washington) AU - Millen, R L AU - Kawaguchi, T AU - Granger, M C AU - Porter, MD AU - Tondra, M AD - Departments of Chemistry and Chemical and Biological Engineering, Ames Laboratory-USDOE, and Institute for Combinatorial Discovery, Iowa State University, Ames, Iowa 50011, USA Y1 - 2005/10/15/ PY - 2005 DA - 2005 Oct 15 SP - 6581 EP - 6587 VL - 77 IS - 20 SN - 0003-2700, 0003-2700 KW - Biotechnology and Bioengineering Abstracts KW - Temperature effects KW - Magnetic fields KW - atomic force microscopy KW - Immunoglobulin G KW - nanoparticles KW - Photoelectron spectroscopy KW - Immunosorbents KW - W 30900:Methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19418630?accountid=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=Analytical+Chemistry+%28Washington%29&rft.atitle=Giant+Magnetoresistive+Sensors+and+Superparamagnetic+Nanoparticles%3A+A+Chip-Scale+Detection+Strategy+for+Immunosorbent+Assays&rft.au=Millen%2C+R+L%3BKawaguchi%2C+T%3BGranger%2C+M+C%3BPorter%2C+MD%3BTondra%2C+M&rft.aulast=Millen&rft.aufirst=R&rft.date=2005-10-15&rft.volume=77&rft.issue=20&rft.spage=6581&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%29&rft.issn=00032700&rft_id=info:doi/10.1021%2Fac0509049 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Immunoglobulin G; Temperature effects; Photoelectron spectroscopy; Magnetic fields; nanoparticles; Immunosorbents; atomic force microscopy DO - http://dx.doi.org/10.1021/ac0509049 ER - TY - JOUR T1 - Adsorption of arsenic(V) by activated carbon prepared from oat hulls AN - 20295875; 7488768 AB - The efficiency of self-manufactured activated carbon (AC) produced from oat hulls in adsorbing arsenic(V) was tested in a batch reactor. The results indicated that the adsorptive capacity of AC was affected by initial pH value, with adsorption capacity decreasing from 3.09 to 1.57mgAsg-1 AC when the initial pH values increased from 5 to 8. A modified linear driving force model conjugated with a Langmuir isotherm was created to describe the study's kinetics. The test results show that rapid adsorption and slow adsorption exist simultaneously when AC is used to remove arsenic(V). JF - Chemosphere AU - Chuang, C L AU - Fan, M AU - Xu, M AU - Brown, R C AU - Sung, S AU - Saha, B AU - Huang, C P AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA, fan@ameslab.gov Y1 - 2005/10// PY - 2005 DA - October 2005 SP - 478 EP - 483 PB - Elsevier Science Ltd., Pergamon, P.O. Box 800 Kidlington Oxford OX5 1DX UK, [mailto:nlinfo-f@elsevier.nl] VL - 61 IS - 4 SN - 0045-6535, 0045-6535 KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality KW - Arsenic KW - Activated carbon KW - Adsorption KW - Oat hulls KW - Carbon KW - Kinetics KW - Hulls KW - Isotherms KW - pH KW - Q5 08503:Characteristics, behavior and fate KW - P 9000:ENVIRONMENTAL ACTION KW - Q2 09101:General works UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20295875?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Chemosphere&rft.atitle=Adsorption+of+arsenic%28V%29+by+activated+carbon+prepared+from+oat+hulls&rft.au=Chuang%2C+C+L%3BFan%2C+M%3BXu%2C+M%3BBrown%2C+R+C%3BSung%2C+S%3BSaha%2C+B%3BHuang%2C+C+P&rft.aulast=Chuang&rft.aufirst=C&rft.date=2005-10-01&rft.volume=61&rft.issue=4&rft.spage=478&rft.isbn=&rft.btitle=&rft.title=Chemosphere&rft.issn=00456535&rft_id=info:doi/10.1016%2Fj.chemosphere.2005.03.012 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-09-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Carbon; Adsorption; Hulls; Isotherms; Arsenic; Kinetics; Activated carbon; pH DO - http://dx.doi.org/10.1016/j.chemosphere.2005.03.012 ER - TY - JOUR T1 - Synthesis and characterization of temperature and pH-responsive pentablock copolymers AN - 20242050; 6648362 AB - A family of amphiphilic ABCBA pentablock copolymers based on commercially available Pluronic super([registered]) F127 block copolymers and various amine containing methacrylate monomers was synthesized via Cu(I) mediated controlled radical polymerization. The block architecture and chemical composition of the pentablock copolymers were engineered to exhibit both temperature and pH responsive self-assembly by exploiting the lower critical solution temperature of the poly(ethylene oxide)/poly(propylene oxide) blocks and the polycationic property of the poly(amine methacrylate) blocks, respectively. In aqueous solutions, the pentablock copolymers formed temperature and pH-responsive micelles. Concentrated aqueous solutions of the copolymer formed a pH- responsive, thermoreversible gel phase. The controlled radical synthesis route yielded well-defined copolymers with narrow molecular weight distributions with the benefit of mild reaction conditions. Small angle X-ray scattering, laser light scattering, cryogenic transmission electron microscopy and dynamic mechanical analysis have been used to characterize the self-assembled structures of the micellar solution and gel phases of the aqueous copolymer system. These copolymers have potential applications in controlled drug delivery and non-viral gene therapy due to their tunable phase behavior and biocompatibility. JF - Polymer AU - Determan, Michael D AU - Cox, James P AU - Seifert, Soenke AU - Thiyagarajan, P AU - Mallapragada, Surya K AD - Department of Chemical Engineering, Iowa State University and Ames Laboratory, 144 Spedding Hall, Ames, IA 50011, USA, determan@ameslab.gov Y1 - 2005/08// PY - 2005 DA - Aug 2005 SP - 6933 EP - 6946 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:usinfo-f@elsevier.com], [URL:http://www.elsevier.nl] VL - 46 IS - 18 SN - 0032-3861, 0032-3861 KW - Virology & AIDS Abstracts; Biotechnology and Bioengineering Abstracts KW - pH Sensitive KW - Thermoreversible KW - Gel KW - Temperature effects KW - Drug delivery KW - Biocompatibility KW - Polymerization KW - Gene therapy KW - Transmission electron microscopy KW - Light scattering KW - Monomers KW - amines KW - Micelles KW - Self-assembly KW - Molecular weight KW - Copolymers KW - X-ray scattering KW - oxides KW - Lasers KW - pH effects KW - Cryogenics KW - Radicals KW - W 30905:Medical Applications KW - V 22310:Genetics, Taxonomy & Structure UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20242050?accountid=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=Polymer&rft.atitle=Synthesis+and+characterization+of+temperature+and+pH-responsive+pentablock+copolymers&rft.au=Determan%2C+Michael+D%3BCox%2C+James+P%3BSeifert%2C+Soenke%3BThiyagarajan%2C+P%3BMallapragada%2C+Surya+K&rft.aulast=Determan&rft.aufirst=Michael&rft.date=2005-08-01&rft.volume=46&rft.issue=18&rft.spage=6933&rft.isbn=&rft.btitle=&rft.title=Polymer&rft.issn=00323861&rft_id=info:doi/10.1016%2Fj.polymer.2005.05.138 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-05-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Temperature effects; Drug delivery; Biocompatibility; Polymerization; Gene therapy; Transmission electron microscopy; Light scattering; Monomers; amines; Micelles; Molecular weight; Self-assembly; X-ray scattering; Copolymers; oxides; Lasers; pH effects; Cryogenics; Radicals DO - http://dx.doi.org/10.1016/j.polymer.2005.05.138 ER - TY - JOUR T1 - New directions in ICP-MS AN - 51628549; 2006-016542 JF - Geochimica et Cosmochimica Acta AU - Houk, R S AU - Anonymous Y1 - 2005/05// PY - 2005 DA - May 2005 SP - 53 PB - Pergamon, Oxford VL - 69 IS - 10, Suppl. SN - 0016-7037, 0016-7037 KW - chemical analysis KW - inductively coupled plasma methods KW - detection limit KW - mass spectroscopy KW - applications KW - spectroscopy KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51628549?accountid=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=New+directions+in+ICP-MS&rft.au=Houk%2C+R+S%3BAnonymous&rft.aulast=Houk&rft.aufirst=R&rft.date=2005-05-01&rft.volume=69&rft.issue=10%2C+Suppl.&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/00167037 LA - English DB - GeoRef N1 - Conference title - 15th annual V. M. Goldschmidt conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - GCACAK N1 - SubjectsTermNotLitGenreText - applications; chemical analysis; detection limit; inductively coupled plasma methods; mass spectroscopy; spectroscopy ER - TY - JOUR T1 - The Advanced Monitoring Systems Initiative; performance monitoring for DOE environmental remediation and contaminant containment AN - 51419547; 2007-064427 JF - Eos, Transactions, American Geophysical Union AU - Haas, W J AU - Venedam, R J AU - Lohrstorfer, C F AU - Weeks, S J AU - Anonymous Y1 - 2005/05// PY - 2005 DA - May 2005 SP - Abstract H42B EP - 03 PB - American Geophysical Union, Washington, DC VL - 86 IS - 18, Suppl. SN - 0096-3941, 0096-3941 KW - United States KW - U. S. Department of Energy KW - AMSI KW - monitoring KW - isotopes KW - pollutants KW - government agencies KW - unsaturated zone KW - pollution KW - tritium KW - Nye County Nevada KW - remediation KW - ground water KW - Nevada Test Site KW - radioactive isotopes KW - transport KW - decontamination KW - hydrogen KW - tracers KW - Advanced Monitoring Systems Initiative KW - water pollution KW - Nevada KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51419547?accountid=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=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.atitle=The+Advanced+Monitoring+Systems+Initiative%3B+performance+monitoring+for+DOE+environmental+remediation+and+contaminant+containment&rft.au=Haas%2C+W+J%3BVenedam%2C+R+J%3BLohrstorfer%2C+C+F%3BWeeks%2C+S+J%3BAnonymous&rft.aulast=Haas&rft.aufirst=W&rft.date=2005-05-01&rft.volume=86&rft.issue=18%2C+Suppl.&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Eos%2C+Transactions%2C+American+Geophysical+Union&rft.issn=00963941&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Geophysical Union 2005 joint assembly N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2007-01-01 N1 - PubXState - DC N1 - Last updated - 2012-06-07 N1 - CODEN - EOSTAJ N1 - SubjectsTermNotLitGenreText - Advanced Monitoring Systems Initiative; AMSI; decontamination; government agencies; ground water; hydrogen; isotopes; monitoring; Nevada; Nevada Test Site; Nye County Nevada; pollutants; pollution; radioactive isotopes; remediation; tracers; transport; tritium; U. S. Department of Energy; United States; unsaturated zone; water pollution ER - TY - JOUR T1 - Screening populations of individual cells for secretory heterogeneity AN - 17329919; 6204448 AB - Many common metabolic and neurological disorders are related to defective regulation of exocytosis at the level of single cells. In exocytosis, vesicles containing the secretory product of a given cell type fuse with the plasma membrane allowing release of the vesicular contents into the extracellular environment where the physiological action can be exerted. The typical secretory vesicle contains between 0.15 and 10 attomoles of material that is released on a millisecond timescale. Hence, detection of this process presents several chemical and analytical challenges. In this work, we utilize the native ATP, stored at high concentrations within the secretory vesicles of most neuroendocrine cells and co-released during exocytosis and during cell lysis, as a universal tracer of cellular secretion events. Organisms studied include pancreatic islets, mast cells, and Escherischia coli. Cellular processes investigated include exocytotic release, stimulated cell lysis, and programmed cell lysis. JF - Analytical and Bioanalytical Chemistry AU - Aspinwall, CA AU - Yeung, E S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, IA 50011, USA, yeung@ameslab.gov Y1 - 2005/02// PY - 2005 DA - Feb 2005 SP - 660 EP - 666 VL - 381 IS - 3 SN - 1618-2642, 1618-2642 KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts KW - W4 130:General Biomedical Engineering: Tools & Techniques KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17329919?accountid=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=Analytical+and+Bioanalytical+Chemistry&rft.atitle=Screening+populations+of+individual+cells+for+secretory+heterogeneity&rft.au=Aspinwall%2C+CA%3BYeung%2C+E+S&rft.aulast=Aspinwall&rft.aufirst=CA&rft.date=2005-02-01&rft.volume=381&rft.issue=3&rft.spage=660&rft.isbn=&rft.btitle=&rft.title=Analytical+and+Bioanalytical+Chemistry&rft.issn=16182642&rft_id=info:doi/10.1007%2Fs00216-004-2981-7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-08-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1007/s00216-004-2981-7 ER - TY - JOUR T1 - Stimuli-Responsive Controlled-Release Delivery System Based on Mesoporous Silica Nanorods Capped with Magnetic Nanoparticles AN - 20220774; 6432572 AB - No Abstract JF - Angewandte Chemie (International Edition) AU - Giri, Supratim AU - Trewyn, Brian G AU - Stellmaker, Michael P AU - Lin, Victor S-Y AD - Department of Chemistry and U.S. DOE Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA,, vsylin@iastate.edu Y1 - 2005 PY - 2005 DA - 2005 SP - 5038 EP - 5044 PB - John Wiley & Sons, Ltd., Baffins Lane Chichester W. Sussex PO19 1UD UK, [mailto:customer@wiley.co.uk], [URL:http://www.wiley.com/] VL - 44 IS - 32 SN - 1433-7851, 1433-7851 KW - Biotechnology and Bioengineering Abstracts KW - drug delivery KW - fluorescence KW - magnetic properties KW - mesoporous materials KW - nanostructures KW - Silica KW - nanoparticles KW - Controlled release KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20220774?accountid=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=Angewandte+Chemie+%28International+Edition%29&rft.atitle=Stimuli-Responsive+Controlled-Release+Delivery+System+Based+on+Mesoporous+Silica+Nanorods+Capped+with+Magnetic+Nanoparticles&rft.au=Giri%2C+Supratim%3BTrewyn%2C+Brian+G%3BStellmaker%2C+Michael+P%3BLin%2C+Victor+S-Y&rft.aulast=Giri&rft.aufirst=Supratim&rft.date=2005-01-01&rft.volume=44&rft.issue=32&rft.spage=5038&rft.isbn=&rft.btitle=&rft.title=Angewandte+Chemie+%28International+Edition%29&rft.issn=14337851&rft_id=info:doi/10.1002%2Fanie.200501819 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-09-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Silica; Controlled release; nanoparticles DO - http://dx.doi.org/10.1002/anie.200501819 ER - TY - JOUR T1 - Steam activation of chars produced from oat hulls and corn stover AN - 19935032; 5860103 AB - Oat hulls and corn stover were used to produce chars at approximately 500 degree C. The carbon concentrations of oat hull char and corn stover chars produced were 72.3 and 68.0 wt.%, respectively. Both activation burn-off and Brunauer- Emmett-Teller (BET) surface area appear to exhibit a linear relationship with respect to activation time of oat hulls. As to corn stover activated carbons, there is no linear relationship between activation time and BET surface area. However, activation burn-off of and activation time appear to relate in a linear manner for the activated carbons produced from corn stover chars. Oat hull is better than corn stover as a raw material for the production of activated carbon. JF - Bioresource Technology AU - Fan, M AU - Marshall, W AU - Daugaard, D AU - Brown, R C AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA, fan@ameslab.gov Y1 - 2004/05// PY - 2004 DA - May 2004 SP - 103 EP - 107 PB - Elsevier Science Ltd., The Boulevard Langford Lane Kidlington Oxford OX5 1GB UK, [mailto:nlinfo-f@elsevier.nl], [URL:http://www.elsevier.nl] VL - 93 IS - 1 SN - 0960-8524, 0960-8524 KW - Biotechnology and Bioengineering Abstracts KW - Carbon KW - Surface area KW - Steam KW - Carbon (activated) KW - W 30930:Agricultural Applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19935032?accountid=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=Bioresource+Technology&rft.atitle=Steam+activation+of+chars+produced+from+oat+hulls+and+corn+stover&rft.au=Fan%2C+M%3BMarshall%2C+W%3BDaugaard%2C+D%3BBrown%2C+R+C&rft.aulast=Fan&rft.aufirst=M&rft.date=2004-05-01&rft.volume=93&rft.issue=1&rft.spage=103&rft.isbn=&rft.btitle=&rft.title=Bioresource+Technology&rft.issn=09608524&rft_id=info:doi/10.1016%2Fj.biortech.2003.08.016 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-06-01 N1 - Last updated - 2015-03-30 N1 - SubjectsTermNotLitGenreText - Carbon; Surface area; Steam; Carbon (activated) DO - http://dx.doi.org/10.1016/j.biortech.2003.08.016 ER - TY - JOUR T1 - Absorption of dilute SO sub(2) gas stream with conversion to polymeric ferric sulfate for use in water treatment AN - 16175223; 6063918 AB - Use of sulfur dioxide (SO sub(2)) in the production of polymeric ferric sulfate (PFS) was investigated. PFS is a highly effective coagulant useful in treatment of drinking water and wastewater, and could serve as a value-added sink for sulfur removed during coal gas cleanup. SO sub(2) was absorbed from a dilute gas stream by sparging it into a bench-scale reactor containing a stirred solution of ferrous sulfate with sodium chlorate added as an oxidant. The reaction took place near atmospheric pressure and at temperatures of 30-80C, and produced a solution containing approximately 50 wt.% PFS. SO sub(2) removal efficiencies greater than 90% were achieved with ferrous iron concentrations in the product less than 0.1%. Other PFS quality parameters were also monitored, including total iron content, basicity, and pH. A factorial analysis of the effect of temperature, oxidant dosage, SO sub(2) concentration, and gas flow rate on SO sub(2) removal efficiency is presented. In general, higher synthesis temperatures increased iron conversion rates while decreasing SO sub(2) removal efficiency, and increased oxidant dosages had a positive correlation with removal efficiency. In addition, X-ray diffraction analyses showed that all dried PFS samples were found to be highly amorphous regardless of drying conditions. JF - Chemical Engineering Journal AU - Butler, AD AU - Fan, Maohong AU - Brown, R C AU - Cooper, A T AU - van Leeuwen, JH AU - Sung, Shihwu AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA, fan@ameslab.gov Y1 - 2004/04/15/ PY - 2004 DA - 2004 Apr 15 SP - 265 EP - 273 VL - 98 IS - 3 SN - 1385-8947, 1385-8947 KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts; Pollution Abstracts; Aqualine Abstracts KW - Sulfur KW - Sulfates KW - Sulphur KW - Coagulants KW - Sulfur Compounds KW - Coal KW - Streams KW - Wastewater treatment KW - Flow rates KW - Efficiency KW - Sulfur dioxide KW - Drinking Water KW - Flow Rates KW - Water treatment KW - Absorption KW - Water Treatment KW - pH KW - Chemical Treatment KW - Abiotic factors KW - Temperature effects KW - Coagulation KW - Temperature KW - Drying KW - Atmospheric Pressure KW - Chemical engineering KW - X-ray diffraction KW - Sodium KW - Stream KW - atmospheric pressure KW - Atmospheric pressure KW - Drinking water KW - Wastewater Treatment KW - Iron KW - Oxidants KW - Q2 09243:Structure, mechanics and thermodynamics KW - SW 3040:Wastewater treatment processes KW - P 2000:FRESHWATER POLLUTION KW - AQ 00004:Water Treatment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16175223?accountid=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=Chemical+Engineering+Journal&rft.atitle=Absorption+of+dilute+SO+sub%282%29+gas+stream+with+conversion+to+polymeric+ferric+sulfate+for+use+in+water+treatment&rft.au=Butler%2C+AD%3BFan%2C+Maohong%3BBrown%2C+R+C%3BCooper%2C+A+T%3Bvan+Leeuwen%2C+JH%3BSung%2C+Shihwu&rft.aulast=Butler&rft.aufirst=AD&rft.date=2004-04-15&rft.volume=98&rft.issue=3&rft.spage=265&rft.isbn=&rft.btitle=&rft.title=Chemical+Engineering+Journal&rft.issn=13858947&rft_id=info:doi/10.1016%2Fj.cej.2003.10.007 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2005-01-01 N1 - Last updated - 2016-02-04 N1 - SubjectsTermNotLitGenreText - Temperature effects; Drinking Water; Sulphur; Stream; Drying; Atmospheric pressure; Chemical engineering; Coal; Abiotic factors; Sulfates; Sulfur; Coagulants; Temperature; X-ray diffraction; Wastewater treatment; Flow rates; Sodium; Efficiency; Sulfur dioxide; Water treatment; Absorption; atmospheric pressure; Drinking water; Iron; Oxidants; pH; Coagulation; Sulfur Compounds; Water Treatment; Wastewater Treatment; Chemical Treatment; Flow Rates; Atmospheric Pressure; Streams DO - http://dx.doi.org/10.1016/j.cej.2003.10.007 ER - TY - JOUR T1 - Novel biosensor chip for simultaneous detection of DNA-carcinogen adducts with low-temperature fluorescence AN - 19207346; 5793099 AB - A monoclonal antibody (MAb)-gold biosensor chip with low-temperature laser- induced fluorescence detection for analysis of DNA-carcinogen adducts is described. Optimization of the detection limit, dynamic range, and biosensing applicability of the MAb-gold biosensor chip was achieved by: (1) using dithiobis(succinimidyl propionate (DSP)) as a protein linker and (2) employing recombinant protein A to provide oriented immobilization of the MAbs. The use of DSP, which has a short methylene chain length, led to faster protein binding kinetics and higher protein surface density than a longer dithiobis(succinimidyl undecanoate) (DSU) linker. The incorporation of recombinant protein A increased the distance between the oriented MAb-bound analytes and the gold surface. The increased distance minimized fluorescence quenching, resulting in about a 10- fold increase in the fluorescence signal in comparison with a chip without protein A. The improved chip architecture was used to demonstrate that biosensing of two structurally similar benzo[a]pyrene (BP)-derived DNA adducts, BP-6-N7Gua and BP-diolepoxide-10-N super(2)dG, bound to two specific MAbs immobilized from a mixture at the same address on the chip, is feasible. These mutagenic adducts are formed by one-electron oxidation and monooxygenation pathways, and are depurinating and stable DNA adducts, respectively. It is shown that the DNA adducts can be easily identified at the same address using time- resolved, low-temperature laser-based fluorescence spectroscopy. The current limit of detection is in the low femtomole range. These results indicate that a single biosensor chip consisting of a Au/DSP/protein A/MAb nanoassembly, with analyte-specific MAbs and low-temperature fluorescence detection should be suitable for simultaneous detection and quantitation of the above adducts, as well as the luminescent antigens for which selective MAbs exist. JF - Biosensors & Bioelectronics AU - Grubor, N M AU - Shinar, R AU - Jankowiak, R AU - Porter, MD AU - Small, G J AD - Ames Laboratory--USDOE and Department of Chemistry, Iowa State University, Ames, IA 50011, USA, jankowiak@ameslab.gov Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 547 EP - 556 PB - Elsevier Advanced Technology, 660 White Plains Rd. Tarrytown NY 10591-5153 USA VL - 19 IS - 6 SN - 0956-5663, 0956-5663 KW - dithiobis(succinimidyl propionate) KW - Biotechnology and Bioengineering Abstracts; Medical and Pharmaceutical Biotechnology Abstracts; Bioengineering Abstracts KW - Biosensors KW - Temperature effects KW - DNA adducts KW - Fluorescence KW - Monoclonal antibodies KW - Cold KW - Carcinogens KW - W4 230:Biosensors, Bioelectronics & Bioindicators KW - W 30965:Miscellaneous, Reviews KW - W3 33250:Methods: Others UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19207346?accountid=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=Biosensors+%26+Bioelectronics&rft.atitle=Novel+biosensor+chip+for+simultaneous+detection+of+DNA-carcinogen+adducts+with+low-temperature+fluorescence&rft.au=Grubor%2C+N+M%3BShinar%2C+R%3BJankowiak%2C+R%3BPorter%2C+MD%3BSmall%2C+G+J&rft.aulast=Grubor&rft.aufirst=N&rft.date=2004-01-01&rft.volume=19&rft.issue=6&rft.spage=547&rft.isbn=&rft.btitle=&rft.title=Biosensors+%26+Bioelectronics&rft.issn=09565663&rft_id=info:doi/10.1016%2FS0956-5663%2803%2900274-4 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Fluorescence; Temperature effects; Cold; Biosensors; DNA adducts; Carcinogens; Monoclonal antibodies DO - http://dx.doi.org/10.1016/S0956-5663(03)00274-4 ER - TY - JOUR T1 - One- and Two-Dimensional Miniaturized Electrophoresis of Proteins with Native Fluorescence Detection AN - 17987219; 5937024 AB - Miniaturized electrophoresis was successfully coupled with native fluorescence detection for direct analysis of proteins in one- and two-dimensional separations. The detection setup was based on direct observation of the UV-induced fluorescence of proteins using a CCD camera and a Hg (Xe) lamp for sample excitation. Protein mixtures were readily separated by size on a 1-cm segment of the one-dimensional gel in 8 min, and a detection limit of 0.04 ng per band was achieved. The dynamic range of the system was larger than 2 orders of magnitude. Miniaturized slab gel electrophoresis was performed on a special holder designed to couple isoelectric focusing with SDS-PAGE. Two-dimensional separation, including rehydration of IEF strip and fluorescence detection was completed in 2.5 h. Approximately 200 protein spots from Escherichia coli were detected on a 1 cm super(2) area. A detection limit of 0.1 mu g of total protein was achieved. The operation should be amenable to total automation. JF - Analytical Chemistry (Washington) AU - Sluszny, C AU - Yeung, E S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA Y1 - 2004/01// PY - 2004 DA - Jan 2004 SP - 1359 EP - 1365 VL - 76 IS - 5 SN - 0003-2700, 0003-2700 KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts KW - Fluorescence KW - Proteins KW - Automation KW - Isoelectric focusing KW - Gel electrophoresis KW - W4 330:Biopolymers & Food Biotechnology KW - W 30965:Miscellaneous, Reviews UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17987219?accountid=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=Analytical+Chemistry+%28Washington%29&rft.atitle=One-+and+Two-Dimensional+Miniaturized+Electrophoresis+of+Proteins+with+Native+Fluorescence+Detection&rft.au=Sluszny%2C+C%3BYeung%2C+E+S&rft.aulast=Sluszny&rft.aufirst=C&rft.date=2004-01-01&rft.volume=76&rft.issue=5&rft.spage=1359&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%29&rft.issn=00032700&rft_id=info:doi/10.1021%2Fac035336g LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Gel electrophoresis; Fluorescence; Isoelectric focusing; Automation; Proteins DO - http://dx.doi.org/10.1021/ac035336g ER - TY - JOUR T1 - Comparative corrosion performance of black oxide, sandblasted, and fine- drawn nitinol wires in potentiodynamic and potentiostatic tests: Effects of chemical etching and electropolishing AN - 17515076; 5911937 AB - The corrosion performance of sandblasted (SB) and smooth fine-drawn (FD) medical-use nitinol wires was compared with the performance of wires with black oxide (BO) formed in air during their manufacture. Potentiodynamic and ASTM F746 potentiostatic tests in a 0.9 % NaCl solution were conducted on wires in their as-received, chemically etched, aged in boiling water, and electropolished states. As-received wires with various surface finishes revealed breakdown potentials in the range from-100 mV to +500 mV; similar passive current density, 10 super(-6) A/cm super(2); and a wide hysteresis on the reverse scan, demonstrating strong susceptibility to localized corrosion. Chemically etched wires with original black oxide displayed consistent corrosion performance and surpassed, in corrosion resistance, electropolished wires that showed significantly lower breakdown (400-700 mV) and localized corrosion potentials (~-50 to +113 mV). Sandblasted and fine-drawn wires exhibited rather inconsistent corrosion behavior. In potentiodynamic tests these wires could perform with equal probability either on the level of pretreated BO wires or rather similar to as- received wires. Both SB and FD wires revealed low breakdown potentials in the PS regime. SEM analysis performed before tests indicated that sandblasting was not efficient for the complete removal of the original scaling, and fine drawing aggravated the situation, resulting in a persistent scaling that contributed to the inferior corrosion performance. Inclusions (oxides, carbides, and oxidized carbides) inherited from the bulk and retained on electropolished surfaces are the cause of their inferior performance compared to chemically etched surfaces. In electropolished wires corrosion was initiated around inclusions. JF - Journal of Biomedical Materials Research, Part B: Applied Biomaterials AU - Shabalovskaya, Svetlana AU - Rondelli, Gianni AU - Anderegg, James AU - Xiong, J P AU - Wu, Ming AD - Iowa State University, Ames Laboratory-DOE, Ames, Iowa 50011, shabalov@ameslab.gov Y1 - 2004 PY - 2004 DA - 2004 SP - 223 EP - 231 PB - John Wiley & Sons, Inc., 111 River Street Hoboken NJ 07030 USA, [mailto:custserv@wiley.com], [URL:http://www.wiley.com/] VL - 69B IS - 2 SN - 0021-9304, 0021-9304 KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts KW - Boiling KW - Biomaterials KW - Corrosion KW - oxides KW - Hysteresis KW - Etching KW - Sodium chloride KW - W 30965:Miscellaneous, Reviews KW - W4 110:Biomedical Materials & Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17515076?accountid=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+Biomedical+Materials+Research%2C+Part+B%3A+Applied+Biomaterials&rft.atitle=Comparative+corrosion+performance+of+black+oxide%2C+sandblasted%2C+and+fine-+drawn+nitinol+wires+in+potentiodynamic+and+potentiostatic+tests%3A+Effects+of+chemical+etching+and+electropolishing&rft.au=Shabalovskaya%2C+Svetlana%3BRondelli%2C+Gianni%3BAnderegg%2C+James%3BXiong%2C+J+P%3BWu%2C+Ming&rft.aulast=Shabalovskaya&rft.aufirst=Svetlana&rft.date=2004-01-01&rft.volume=69B&rft.issue=2&rft.spage=223&rft.isbn=&rft.btitle=&rft.title=Journal+of+Biomedical+Materials+Research%2C+Part+B%3A+Applied+Biomaterials&rft.issn=00219304&rft_id=info:doi/10.1002%2Fjbm.b.30006 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Corrosion; oxides; Hysteresis; Boiling; Etching; Biomaterials; Sodium chloride DO - http://dx.doi.org/10.1002/jbm.b.30006 ER - TY - JOUR T1 - Pore Exclusion Chromatography-Inductively Coupled Plasma-Mass Spectrometry for Monitoring Elements in Bacteria: A Study on Microbial Removal of Uranium from Aqueous Solution AN - 18003981; 5937002 AB - The interstitial spaces between spherical particles in a packed column can act as a sieve that passes microorganisms below a certain size. If the bed is a perfusion-type material (containing a binary distribution of large and small pores), colloidal-size microorganisms are subject only to pore exclusion, while all molecules are subject to size exclusion among the various pores. Thus, microorganisms elute first, followed by macromolecules, and then small molecules. Coupling this separation method to an ICP magnetic sector mass spectrometer provides a sensitive, direct means to study the microbial uptake of heavy metals (i.e., uranium) from their surrounding environments. Multiple metal ions can be monitored in the microorganism and in the surrounding solution. In this way, definitive information can be provided for the remediation of radioactive waste sites. The effect of uranium on microbial growth is also discussed. JF - Analytical Chemistry (Washington) AU - Zhang, B AU - Li, F AU - Houk, R S AU - Armstrong, D W AD - Department of Chemistry, Ames Laboratory-U.S. Department of Energy, Iowa State University, Ames, Iowa 50011, USA Y1 - 2003/12/12/ PY - 2003 DA - 2003 Dec 12 SP - 6901 EP - 6905 VL - 75 IS - 24 SN - 0003-2700, 0003-2700 KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts KW - Bacteria KW - Pores KW - Perfusion KW - Uranium KW - Gel-filtration chromatography KW - Radioactive wastes KW - Elements KW - Mass spectroscopy KW - W 30965:Miscellaneous, Reviews KW - W4 210:Bioremediation, Bioreactors & BioCycling UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18003981?accountid=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=Analytical+Chemistry+%28Washington%29&rft.atitle=Pore+Exclusion+Chromatography-Inductively+Coupled+Plasma-Mass+Spectrometry+for+Monitoring+Elements+in+Bacteria%3A+A+Study+on+Microbial+Removal+of+Uranium+from+Aqueous+Solution&rft.au=Zhang%2C+B%3BLi%2C+F%3BHouk%2C+R+S%3BArmstrong%2C+D+W&rft.aulast=Zhang&rft.aufirst=B&rft.date=2003-12-12&rft.volume=75&rft.issue=24&rft.spage=6901&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%29&rft.issn=00032700&rft_id=info:doi/10.1021%2Fac0348017 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Gel-filtration chromatography; Perfusion; Uranium; Elements; Bacteria; Mass spectroscopy; Pores; Radioactive wastes DO - http://dx.doi.org/10.1021/ac0348017 ER - TY - JOUR T1 - Spectral Characterization of Catechol Estrogen Quinone (CEQ)-Derived DNA Adducts and Their Identification in Human Breast Tissue Extract AN - 18876738; 5731498 AB - Estrogens, including the natural hormones estrone (E sub(1)) and estradiol (E sub(2)), are thought to be involved in tumor induction. Catechol estrogen quinones (CEQ) derived from 4-hydroxyestrone (4-OHE sub(1)) and 4-hydroxyestradiol (4-OHE sub(2)) react with DNA and form depurinating N7Gua and N3Ade adducts that might be responsible for tumor initiation (Cavalieri, E. L., et al. (2000) J. Natl. Cancer Inst. Monogr. 27, 75). Current detection limits for the CEQ-derived DNA adducts by high-performance liquid chromatography with multichannel electrochemical detection are in the picomole range. To improve the limit of detection (LOD) for CEQ-derived DNA adducts, spectrophotometric monitoring was investigated. Spectroscopic studies of 4-OHE sub(1)-1-N3Ade, 4-OHE sub(1)-1-N7Gua, 4-OHE sub(2)-1-N3Ade, and 4-OHE sub(2)-1-N7Gua adduct standards were performed at 77 and 300 K. Upon laser excitation at 257 nm, the 4-OHE sub(1)- and 4-OHE sub(2)-derived N7Gua and N3Ade adducts are strongly phosphorescent at T = 77 K. No phosphorescence was observed at 300 K. Both N3Ade and N7Gua adduct types have weak phosphorescence origin bands near 383 and 385 nm, respectively. The corresponding phosphorescence lifetimes are 1.11 plus or minus 0.05 and 0.37 plus or minus 0.05 s. The LOD, based on phosphorescence measurements, is in the low femtomole range. The concentration LOD is approximately 10 super(-9) M, i.e., similar to that recently obtained for CEQ-derived N-acetylcysteine conjugates. The LOD in capillary electrophoresis (CE) with field-amplified sample stacking and absorbance detection is about 3 x 10 super(-8) M. To verify whether CEQ-derived DNA adducts are formed in humans or not, tissue extracts from two breast cancer patients were analyzed by CE interfaced with room temperature absorption and low temperature (laser-excited) phosphorescence spectroscopies. For the first time, formation of CEQ-derived DNA adducts is shown in humans. For example, the level of 4-OHE sub(1)-1-N3Ade in the breast tissue extract from a patient with breast carcinoma (8.40 plus or minus 0.05 pmol/g of tissue) is larger by a factor of about 30 than that in the breast tissue sample from a woman without breast cancer (0.25 plus or minus 0.05 pmol/g of tissue). In contrast, similar amounts of 4-OHE sub(2)-1-N3Ade were observed in both types of tissue. Although more breast tissue samples from women with and without breast cancer need to be studied, these results suggest that the N3Ade adducts could serve as biomarkers to predict the risk of breast cancer. JF - Chemical Research in Toxicology AU - Markushin, Y AU - Zhong, W AU - Cavalieri, EL AU - Rogan, E G AU - Small, G J AU - Yeung, E S AU - Jankowiak, R AD - Ames Laboratory - USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA Y1 - 2003/09// PY - 2003 DA - September 2003 SP - 1107 EP - 1117 PB - American Chemical Society, P.O. Box 182426 Columbus OH 43218-2426 USA, [mailto:service@acs.org] VL - 16 IS - 9 SN - 0893-228X, 0893-228X KW - catechol estrogen quinones KW - man KW - Biochemistry Abstracts 2: Nucleic Acids; Toxicology Abstracts KW - DNA adducts KW - Breast KW - Breast cancer KW - Cancer KW - N 14630:Chemical reactions & interactions, including effects of radiation KW - X 24173:Animals UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18876738?accountid=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=Chemical+Research+in+Toxicology&rft.atitle=Spectral+Characterization+of+Catechol+Estrogen+Quinone+%28CEQ%29-Derived+DNA+Adducts+and+Their+Identification+in+Human+Breast+Tissue+Extract&rft.au=Markushin%2C+Y%3BZhong%2C+W%3BCavalieri%2C+EL%3BRogan%2C+E+G%3BSmall%2C+G+J%3BYeung%2C+E+S%3BJankowiak%2C+R&rft.aulast=Markushin&rft.aufirst=Y&rft.date=2003-09-01&rft.volume=16&rft.issue=9&rft.spage=1107&rft.isbn=&rft.btitle=&rft.title=Chemical+Research+in+Toxicology&rft.issn=0893228X&rft_id=info:doi/10.1021%2Ftx0340854 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - DNA adducts; Breast; Breast cancer; Cancer DO - http://dx.doi.org/10.1021/tx0340854 ER - TY - JOUR T1 - Comparisons of polymeric and conventional coagulants in arsenic(V) removal. AN - 73583201; 12934824 AB - The removal of arsenic(V) from water was investigated under various coagulation conditions and compared to a variety of coagulation agents, including polymeric ferric chloride, polymeric ferric sulfate, polymeric aluminum chloride, polymeric aluminum sulfate, ferric chloride, ferric sulfate, aluminum chloride, and aluminum sulfate. Coagulation conditions evaluated include pH, temperature, type of coagulant, the addition of a coagulation aid, and initial arsenic(V) concentration. Results indicated that the arsenic removal efficiencies of polymeric coagulants were typically 10 to approximately 20% higher than those of their conventional coagulant counterparts. JF - Water environment research : a research publication of the Water Environment Federation AU - Fan, Maohong AU - Brown, Robert C AU - Sung, Shin Wu AU - Huang, Chin-Pao AU - Ong, Say K AU - van Leeuwen, J Hans AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames 50011, USA. fan@ameslab.gov PY - 2003 SP - 308 EP - 313 VL - 75 IS - 4 SN - 1061-4303, 1061-4303 KW - Aluminum Compounds KW - 0 KW - Ferric Compounds KW - Water Pollutants, Chemical KW - Arsenic KW - N712M78A8G KW - Index Medicus KW - Kinetics KW - Hydrogen-Ion Concentration KW - Ferric Compounds -- chemistry KW - Temperature KW - Aluminum Compounds -- chemistry KW - Arsenic -- chemistry KW - Water Pollutants, Chemical -- analysis KW - Water Purification -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73583201?accountid=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=Water+environment+research+%3A+a+research+publication+of+the+Water+Environment+Federation&rft.atitle=Comparisons+of+polymeric+and+conventional+coagulants+in+arsenic%28V%29+removal.&rft.au=Fan%2C+Maohong%3BBrown%2C+Robert+C%3BSung%2C+Shin+Wu%3BHuang%2C+Chin-Pao%3BOng%2C+Say+K%3Bvan+Leeuwen%2C+J+Hans&rft.aulast=Fan&rft.aufirst=Maohong&rft.date=2003-07-01&rft.volume=75&rft.issue=4&rft.spage=308&rft.isbn=&rft.btitle=&rft.title=Water+environment+research+%3A+a+research+publication+of+the+Water+Environment+Federation&rft.issn=10614303&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-12-08 N1 - Date created - 2003-08-25 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Rapid, low level determination of silver(I) in drinking water by colorimetric-solid-phase extraction AN - 16156647; 5694013 AB - A rapid, highly sensitive two-step procedure for the trace analysis of silver(I) is described. The method is based on: (1) the solid-phase extraction (SPE) of silver(I) from a water sample onto a disk impregnated with a silver- selective colorimetric reagent, and (2) the determination of the amount of complexed analyte extracted by the disk by diffuse reflectance spectroscopy (DRS). This method, called colorimetric-solid-phase extraction (C-SPE), was recently shown effective in determining low concentrations (0.1-5.0 mg/ml) of iodine and iodide in drinking water. This report extends C-SPE to the trace ( similar to 4 mu g/l) level monitoring of silver(I) which is a biocide used on the International Space Station (ISS). The determination relies on the manually driven passage of a water sample through a polystyrene-divinylbenzene disk that has been impregnated with the colorimetric reagent 5-(p- dimethylaminobenzylidene) rhodanine (DMABR) and with an additive such as a semi- volatile alcohol (1, 2-decanediol) or nonionic surfactant (Brij 30). The amount of concentrated silver(I) is then determined in a few seconds by using a hand- held diffuse reflectance spectrometer, with a total sample workup and readout time of similar to 60 s. Importantly, the additive induces the uptake of water by the disk, which creates a local environment conducive to silver(I) complexation at an extremely high concentration factor ( similar to 800). There is no detectable reaction between silver(I) and impregnated DMABR in the absence of the additive. This strategy represents an intriguing new dimension for C-SPE in which additives, directly loaded in the disk material, provide a means to manipulate the reactivity of the impregnated reagent. JF - Analytica Chimica Acta AU - Arena, M P AU - Porter, MD AU - Fritz, J S AD - Microanalytical Instrumentation Center, Ames Laboratory-US Department of Energy and Department of Chemistry, Iowa State University, Ames, IA 50011, USA, kniss@ameslab.gov Y1 - 2003/04/15/ PY - 2003 DA - 2003 Apr 15 SP - 197 EP - 207 PB - Elsevier VL - 482 IS - 2 SN - 0003-2670, 0003-2670 KW - Water Resources Abstracts; Pollution Abstracts; Aqualine Abstracts KW - Colorimetric-solid-phase extraction KW - Diffuse reflectance spectroscopy KW - 5-(p-Dimethylaminobenzylidene) rhodanine KW - Water Supply (Potable) KW - Pollution detection KW - Water sampling KW - Water Analysis KW - Potable Water KW - Chemical Analysis KW - Colorimetry KW - Heavy Metals KW - Drinking Water KW - Analytical Methods KW - Silver KW - Laboratory Equipment KW - SW 3010:Identification of pollutants KW - P 2000:FRESHWATER POLLUTION KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16156647?accountid=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=Analytica+Chimica+Acta&rft.atitle=Rapid%2C+low+level+determination+of+silver%28I%29+in+drinking+water+by+colorimetric-solid-phase+extraction&rft.au=Arena%2C+M+P%3BPorter%2C+MD%3BFritz%2C+J+S&rft.aulast=Arena&rft.aufirst=M&rft.date=2003-04-15&rft.volume=482&rft.issue=2&rft.spage=197&rft.isbn=&rft.btitle=&rft.title=Analytica+Chimica+Acta&rft.issn=00032670&rft_id=info:doi/10.1016%2FS0003-2670%2803%2900173-9 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-03-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Pollution detection; Water sampling; Colorimetry; Silver; Water Supply (Potable); Drinking Water; Water Analysis; Potable Water; Chemical Analysis; Heavy Metals; Analytical Methods; Laboratory Equipment DO - http://dx.doi.org/10.1016/S0003-2670(03)00173-9 ER - TY - JOUR T1 - Reaction Kinetics for a Novel Flue Gas Cleaning Technology AN - 16157694; 5651560 AB - This paper studies the kinetics of the reaction between NaClO sub(3), FeSO sub(4), and NaHSO sub(3), which can potentially be used as an alternative to the conventional lime-limestone process for flue gas desulfurization. The key for the establishment of a kinetic model of the reaction is to find a way to determine concentrations of reactants or products during the reaction. The generation rate of Cl super(-) during the reaction was monitored using a Dionex Series 4000i ion chromatograph. Based on the changes of Cl super(-) concentrations at the designed initial reaction conditions, reaction orders for each reactant were derived. The reaction orders were determined to be 1.1 for NaClO sub(3), 1.1 for FeSO sub(4), and 1.4 for NaHSO sub(3). The global rate coefficients of the reaction at temperatures ranging from 40 to 80 degree C were determined. Furthermore, the preexponential factor and the activation energy in the empirical Arrhenius form of the reaction were derived from the relationship between temperature and its corresponding observed global rate coefficient. JF - Environmental Science & Technology AU - Fan, M AU - Brown, R C AU - Zhuang, Y AU - Cooper, A T AU - Nomura, M AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, Iowa 50011, USA, fan@ameslab.gov Y1 - 2003/04/01/ PY - 2003 DA - 2003 Apr 01 SP - 1404 EP - 1407 VL - 37 IS - 7 SN - 0013-936X, 0013-936X KW - Pollution Abstracts KW - Flue gas desulfurization KW - Chemical reactions KW - Air pollution control KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16157694?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Reaction+Kinetics+for+a+Novel+Flue+Gas+Cleaning+Technology&rft.au=Fan%2C+M%3BBrown%2C+R+C%3BZhuang%2C+Y%3BCooper%2C+A+T%3BNomura%2C+M&rft.aulast=Fan&rft.aufirst=M&rft.date=2003-04-01&rft.volume=37&rft.issue=7&rft.spage=1404&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes025828v LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2003-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Chemical reactions; Flue gas desulfurization; Air pollution control DO - http://dx.doi.org/10.1021/es025828v ER - TY - JOUR T1 - Spectroscopic characterization of the 4-hydroxy catechol estrogen quinones-derived GSH and N-acetylated Cys conjugates. AN - 73127870; 12641430 AB - Estrogens, including the natural hormones estrone (E(1)) and estradiol (E(2)), are thought to be involved in tumor induction. Specifically, catechol estrogen quinones (CEQs) derived from the catechol estrogens 4-hydroxyestrone (4-OHE(1)) and 4-hydroxyestradiol (4-OHE(2)) react with DNA and form DNA adducts (Cavalieri, E. L., et al. (1997) Proc. Natl Acad. Sci. U.S.A. 94, 10037). CEQs are also conjugated with GSH, a reaction that prevents damage to DNA, providing biomarkers of exposure to CEQs. Current detection limits for these analytes by HPLC with multichannel electrochemical detection are in the picomole range (Devanesan, P., et al. (2001) Carcinogenesis 22, 489). To improve the detection limit of CEQ-derived conjugates, spectrophotometric monitoring was investigated. Fluorescence and/or phosphorescence spectra of the 4-OHE(1), 4-OHE(2), Cys, N-acetylcysteine (NAcCys), 4-OHE(1)-2-SG, and 4-OHE(2)-2-SG conjugates and their decomposition products 4-OHE(1)-2-NAcCys and 4-OHE(2)-2-NAcCys were obtained at 300 and 77 K. It is shown that (i) 4-OHE(1)- and 4-OHE(2)-derived SG and NAcCys conjugates are weakly fluorescent at 300 K (with the emission maximum at 332 nm) but strongly phosphorescent at 77 K; (ii) Cys and NAcCys exhibit fluorescence and phosphorescence only at 77 K; and (iii) 4-OHE(1) and 4-OHE(2) are weakly fluorescent at 300 and 77 K and not phosphorescent. The phosphorescence spectra of SG and NAcCys conjugates are characterized by a weak origin band at approximately 383 nm and two intense vibronic bands at 407 and 425 nm. After they are cooled from 300 to 77 K, the total luminescence intensity of SG and NAcCys conjugates increases by a factor of approximately 150 predominantly due to phosphorescence enhancement. Theoretical calculations revealed, in agreement with the experimental data, that the lowest singlet (S(1)) and triplet (T(1)) states of 4-OHE(2)-2-NAcCys are of n,pi* and pi,pi* character, respectively, leading to a large intersystem crossing yield and strong phosphorescence. The limit of detection (LOD) for CEQ-derived conjugates, based on phosphorescence measurements, is in the low femtomole range. The concentration LOD is approximately 10(-9) M. Therefore, we propose that capillary electrophoresis interfaced with low temperature phosphorescence detection can be used to test for human exposure to CEQs by analyzing urine. JF - Chemical research in toxicology AU - Jankowiak, Ryszard AU - Markushin, Yuri AU - Cavalieri, Ercole L AU - Small, Gerald J AD - Ames Laboratory, US Department of Energy and Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA. jankowiak@ameslab.gov Y1 - 2003/03// PY - 2003 DA - March 2003 SP - 304 EP - 311 VL - 16 IS - 3 SN - 0893-228X, 0893-228X KW - Biomarkers, Tumor KW - 0 KW - Estrogens, Catechol KW - Quinones KW - Glutathione KW - GAN16C9B8O KW - Acetylcysteine KW - WYQ7N0BPYC KW - Index Medicus KW - Sensitivity and Specificity KW - Biomarkers, Tumor -- metabolism KW - Thermodynamics KW - Spectrometry, Fluorescence KW - Biomarkers, Tumor -- chemistry KW - Models, Molecular KW - Luminescent Measurements KW - Biomarkers, Tumor -- analysis KW - Quinones -- chemistry KW - Acetylcysteine -- analogs & derivatives KW - Glutathione -- metabolism KW - Estrogens, Catechol -- metabolism KW - Glutathione -- analysis KW - Acetylcysteine -- analysis KW - Acetylcysteine -- metabolism KW - Estrogens, Catechol -- chemistry KW - Quinones -- metabolism KW - Glutathione -- analogs & derivatives UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73127870?accountid=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=Chemical+research+in+toxicology&rft.atitle=Spectroscopic+characterization+of+the+4-hydroxy+catechol+estrogen+quinones-derived+GSH+and+N-acetylated+Cys+conjugates.&rft.au=Jankowiak%2C+Ryszard%3BMarkushin%2C+Yuri%3BCavalieri%2C+Ercole+L%3BSmall%2C+Gerald+J&rft.aulast=Jankowiak&rft.aufirst=Ryszard&rft.date=2003-03-01&rft.volume=16&rft.issue=3&rft.spage=304&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-10-14 N1 - Date created - 2003-03-18 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Effect of chemical etching and aging in boiling water on the corrosion resistance of nitinol wires with black oxide resulting from manufacturing process AN - 18944863; 5680897 AB - The effect of chemical etching in a HF/HNO sub(3) acid solution and aging in boiling water on the corrosion resistance of Nitinol wires with black oxide has been evaluated with the use of potentiodynamic, modified potentiostatic ASTM F746, and scratch tests. Scanning-electron microscopy, elemental XPS, and Auger analysis were employed to characterize surface alterations induced by surface treatment and corrosion testing. The effect of aging in boiling water on the temperatures of martensitic transformations and shape recovery was evaluated by means of measuring the wire electroresistance. After corrosion tests, as- received wires revealed uniformly cracked surfaces reminiscent of the stress- corrosion-cracking phenomenon. These wires exhibited negative breakdown potentials in potentiostatic tests and variable breakdown potentials in potentiodynamic tests (- 100 mV to + 400 mV versus SCE). Wires with treated surfaces did not reveal cracking or other traces of corrosion attacks in potentiodynamic tests up to + 900-1400-mV potentials and no pitting after stimulation at + 800 mV in potentiostatic tests. They exhibited corrosion behavior satisfactory for medical applications. Significant improvement of corrosion parameters was observed on the reverse scans in potentiodynamic tests after exposure of treated wires to potentials > 1000 mV. In scratch tests, the prepared surfaces repassivated only at low potentials, comparable to that of stainless steel. Tremendous improvement of the corrosion behavior of treated Nitinol wires is associated with the removal of defect surface material and the growth of stable TiO sub(2) oxide. The role of precipitates in the corrosion resistance of Nitinol-scratch repassivation capacity in particular-is emphasized in the discussion. JF - Journal of Biomedical Materials Research, Part B: Applied Biomaterials AU - Shabalovskaya, S AU - Rondelli, G AU - Anderegg, J AU - Simpson, B AU - Budko, S AD - Institute for Physical Research and Technology, Department of Physics and Astronomy, Iowa State University, Room 234, Wilhelm Rd. Ames, IA 50011, shabalov@ameslab.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 331 EP - 340 PB - John Wiley & Sons, Inc., 111 River Street Hoboken NJ 07030 USA, [mailto:custserv@wiley.com], [URL:http://www.wiley.com/] VL - 66B IS - 1 SN - 0021-9304, 0021-9304 KW - black oxide KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts KW - Scanning electron microscopy KW - Boiling KW - Aging KW - Corrosion KW - Biomaterials KW - Precipitates KW - Etching KW - Water KW - W 30965:Miscellaneous, Reviews KW - W4 110:Biomedical Materials & Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18944863?accountid=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+Biomedical+Materials+Research%2C+Part+B%3A+Applied+Biomaterials&rft.atitle=Effect+of+chemical+etching+and+aging+in+boiling+water+on+the+corrosion+resistance+of+nitinol+wires+with+black+oxide+resulting+from+manufacturing+process&rft.au=Shabalovskaya%2C+S%3BRondelli%2C+G%3BAnderegg%2C+J%3BSimpson%2C+B%3BBudko%2C+S&rft.aulast=Shabalovskaya&rft.aufirst=S&rft.date=2003-01-01&rft.volume=66B&rft.issue=1&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Journal+of+Biomedical+Materials+Research%2C+Part+B%3A+Applied+Biomaterials&rft.issn=00219304&rft_id=info:doi/10.1002%2Fjbm.b.10017 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Biomaterials; Aging; Etching; Boiling; Water; Corrosion; Scanning electron microscopy; Precipitates DO - http://dx.doi.org/10.1002/jbm.b.10017 ER - TY - JOUR T1 - Surface conditions of Nitinol wires, tubing, and as-cast alloys. The effect of chemical etching, aging in boiling water, and heat treatment AN - 18707075; 5592354 AB - The surface conditions of Nitinol wires and tubing were evaluated with the use of X-ray photoelectron spectroscopy, high-resolution Auger spectroscopy, electron backscattering, and scanning-electron microscopy. Samples were studied in the as-received state as well as after chemical etching, aging in boiling water, and heat treatment, and compared to a mechanically polished 600-grit- finish Nitinol surface treated similarly. General regularities in surface behavior induced by the examined surface treatments are similar for wires, tubing, and studied as-cast alloy, though certain differences in surface Ni concentration were observed. Nitinol wires and tubing from various suppliers demonstrated great variability in Ni surface concentration (0.5-15 at.%) and Ti/Ni ratio (0.4-35). The wires in the as-received state, with the exception of those with a black oxide originating in the processing procedure, revealed nickel and titanium on the surface in both elemental and oxidized states, indicating a nonpassive surface. Shape-setting heat treatment at 500 degree C for 15 min resulted in tremendous increase in the surface Ni concentration and complete Ni oxidation. Preliminary chemical etching and boiling in water successfully prevented surface enrichment in Ni, initially resulting from heat treatment. A stoichiometric uniformly amorphous TiO sub(2) oxide generated during chemical etching and aging in boiling water was reconstructed at 700 degree C, revealing rutile structure. JF - Journal of Biomedical Materials Research, Part B: Applied Biomaterials AU - Shabalovskaya, SA AU - Anderegg, J AU - Laab, F AU - Thiel, P A AU - Rondelli, G AD - Institute for Physical Research and Technology and Ames Laboratory, Iowa State University, Ames, IA 50011, shabalov@ameslab.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 193 EP - 203 VL - 65B IS - 1 SN - 0021-9304, 0021-9304 KW - Nitinol KW - Biotechnology and Bioengineering Abstracts; Bioengineering Abstracts KW - W 30965:Miscellaneous, Reviews KW - W4 110:Biomedical Materials & Tissue Engineering UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18707075?accountid=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+Biomedical+Materials+Research%2C+Part+B%3A+Applied+Biomaterials&rft.atitle=Surface+conditions+of+Nitinol+wires%2C+tubing%2C+and+as-cast+alloys.+The+effect+of+chemical+etching%2C+aging+in+boiling+water%2C+and+heat+treatment&rft.au=Shabalovskaya%2C+SA%3BAnderegg%2C+J%3BLaab%2C+F%3BThiel%2C+P+A%3BRondelli%2C+G&rft.aulast=Shabalovskaya&rft.aufirst=SA&rft.date=2003-01-01&rft.volume=65B&rft.issue=1&rft.spage=193&rft.isbn=&rft.btitle=&rft.title=Journal+of+Biomedical+Materials+Research%2C+Part+B%3A+Applied+Biomaterials&rft.issn=00219304&rft_id=info:doi/10.1002%2Fjbm.b.10001 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 DO - http://dx.doi.org/10.1002/jbm.b.10001 ER - TY - JOUR T1 - Relationships among loss-on-ignition and unburned carbons, and the FTIR photoacoustic spectra of fly ashes AN - 16173108; 5895779 AB - Loss-on-ignition (LOI) and unburned carbon (UC) concentrations of fly ash are two very important indices for evaluating combustion efficiencies of boilers. They are also very important factors affecting the utilization of fly ashes. The LOI and UC of five fly ash samples collected from different power plants were analysed. The Fourier-transform infrared (FTIR) photoacoustic spectra (PAS) of these fly ash samples were observed. The LOI and UC of fly ashes were found to correlate with the heights of the baselines of their FTIR PAS. The strength of the photoacoustic signal of fly ash has a stronger relationship with its UC than its LOI. Moreover, the LOI of fly ash is always higher than its UC. JF - International Journal of Environment and Pollution AU - Fan, M AU - Brown, R C AU - Nomura, Masakatsu AU - Zhuang, Yahui AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA, fan@ameslab.gov Y1 - 2003 PY - 2003 DA - 2003 SP - 301 EP - 309 VL - 19 IS - 3 SN - 0957-4352, 0957-4352 KW - Pollution Abstracts KW - Carbon KW - Power plants KW - Fly ash KW - Boilers KW - Spectroscopy KW - Combustion KW - P 0000:AIR POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16173108?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Environment+and+Pollution&rft.atitle=Relationships+among+loss-on-ignition+and+unburned+carbons%2C+and+the+FTIR+photoacoustic+spectra+of+fly+ashes&rft.au=Fan%2C+M%3BBrown%2C+R+C%3BNomura%2C+Masakatsu%3BZhuang%2C+Yahui&rft.aulast=Fan&rft.aufirst=M&rft.date=2003-01-01&rft.volume=19&rft.issue=3&rft.spage=301&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Environment+and+Pollution&rft.issn=09574352&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-09-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Carbon; Power plants; Fly ash; Boilers; Spectroscopy; Combustion ER - TY - JOUR T1 - Thin films of block copolymer blends for enhanced performance of acoustic wave-based chemical sensors. AN - 72806152; 12510763 AB - The performance of quartz crystal oscillator-based volatile organic compound (VOC) sensors has been enhanced by using coatings made from poly(styrene-block-ethylene-co-butylene-block-styrene) block copolymers blended with resins and homopolymers. Enhanced performance is characterized by a wider operational temperature range (-10 to +50 degrees C) over which the sensors displayed, concurrently, an analyte sensitivity of >0.2 Hz/ppm toluene, minimal energy loss (resistance <120 ohms), and response times of <20 min (time required to reach 90% of full response). Atomic force microscopy images are consistent with a process in which the additive associates with the polystyrene portions of the microphase-separated block copolymer. This association reinforces the rigidity of the polystyrene network while allowing the rapid uptake of VOCs by the softer polyethylene/butylene phase. JF - Analytical chemistry AU - Lipert, Robert J AU - Shinar, Ruth AU - Vaidya, Bikas AU - Pris, Andrew D AU - Porter, Marc D AU - Liu, Guojun AU - Grabau, Ted D AU - Dilger, John P AD - Microanalytical Instrumentation Center, Department of Chemistry, and Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA. blipert@porter1.ameslab.gov Y1 - 2002/12/15/ PY - 2002 DA - 2002 Dec 15 SP - 6383 EP - 6391 VL - 74 IS - 24 SN - 0003-2700, 0003-2700 KW - Air Pollutants KW - 0 KW - Polyenes KW - Polymers KW - Polystyrenes KW - Quartz KW - 14808-60-7 KW - Toluene KW - 3FPU23BG52 KW - Polyethylene KW - 9002-88-4 KW - polyisobutylene KW - 9003-27-4 KW - polybutene KW - 9003-29-6 KW - Space life sciences KW - Polyethylene -- chemistry KW - Temperature KW - Microscopy, Atomic Force KW - Polyenes -- chemistry KW - Polystyrenes -- chemistry KW - Toluene -- chemistry KW - Polymers -- chemistry KW - Air Pollutants -- analysis KW - Toluene -- analysis KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72806152?accountid=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=Analytical+chemistry&rft.atitle=Thin+films+of+block+copolymer+blends+for+enhanced+performance+of+acoustic+wave-based+chemical+sensors.&rft.au=Lipert%2C+Robert+J%3BShinar%2C+Ruth%3BVaidya%2C+Bikas%3BPris%2C+Andrew+D%3BPorter%2C+Marc+D%3BLiu%2C+Guojun%3BGrabau%2C+Ted+D%3BDilger%2C+John+P&rft.aulast=Lipert&rft.aufirst=Robert&rft.date=2002-12-15&rft.volume=74&rft.issue=24&rft.spage=6383&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-03-11 N1 - Date created - 2003-01-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Laboratory evaluation of a mercury CEM using atomic absorption with a deuterium background correction system. AN - 71680417; 11993876 AB - A prototype mercury (Hg) analyzer based on atomic absorption (AA) with a broadband background correction system using a deuterium (D2) lamp was developed and tested in the laboratory. Initial tests were performed using a small commercially available AA Hg detector operated in series with an optical breadboard version of the D2 background correction system. Based on encouraging results obtained with that system while using streams of elemental Hg and SO2 (an interfering gas), a compact prototype Hg analyzer for use in a Hg continuous emission monitor (CEM) was built. In laboratorytests performed in the absence of interfering gases, the analyzer could detect 0.5 microg/m3 or less of elemental Hg. The noise in the D2 channel of the analyzer was a limiting factor with respect to instrument sensitivity when background-corrected absorbance values were used. Tests with gas streams containing 9-26 microg/m3 of elemental Hg and 0.02-0.44% SO2 indicated that the D2 background correction approach did a good job at subtracting the large interfering signal due to SO2. However, a correction factor had to be applied to the absorbance readings from the D2 channel of the analyzer in order to obtain acceptable accuracy for the background-subtracted Hg measurements. JF - Environmental science & technology AU - Norton, Glenn A AU - Eckels, David E AD - Ames Laboratory, Iowa State University, Ames 50011, USA. norton@ameslab.gov Y1 - 2002/04/15/ PY - 2002 DA - 2002 Apr 15 SP - 1767 EP - 1773 VL - 36 IS - 8 SN - 0013-936X, 0013-936X KW - Air Pollutants KW - 0 KW - Deuterium KW - AR09D82C7G KW - Mercury KW - FXS1BY2PGL KW - Index Medicus KW - Sensitivity and Specificity KW - Reference Values KW - Deuterium -- analysis KW - Spectrophotometry, Atomic -- methods KW - Mercury -- analysis KW - Air Pollutants -- analysis KW - Environmental Monitoring -- methods KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71680417?accountid=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=Laboratory+evaluation+of+a+mercury+CEM+using+atomic+absorption+with+a+deuterium+background+correction+system.&rft.au=Norton%2C+Glenn+A%3BEckels%2C+David+E&rft.aulast=Norton&rft.aufirst=Glenn&rft.date=2002-04-15&rft.volume=36&rft.issue=8&rft.spage=1767&rft.isbn=&rft.btitle=&rft.title=Environmental+science+%26+technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-11-04 N1 - Date created - 2002-05-07 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Solvent-free mechanochemical synthesis of phosphonium salts. AN - 71907937; 12119692 AB - Phosphonium salts have been prepared during high-energy ball-milling of triphenylphosphine with solid organic bromides; the reactions occur at ambient conditions without a solvent; in the case of 2-bromo-2-phenylacetophenone the reaction in a solution usually produces a mixture containing both the C-phosphorylated and O-phosphorylated compounds, while the solvent-free mechanically induced transformation results in the thermodynamically favorable C-phosphorylated product; the occurrence of the observed transformations during mechanical processing of solid reactants is confirmed by the solid-state 31P NMR spectroscopy and X-ray powder diffraction. JF - Chemical communications (Cambridge, England) AU - Balema, Viktor P AU - Wiench, Jerzy W AU - Pruski, Marek AU - Pecharsky, Vitalij K AD - Ames Laboratory, Iowa State University, Ames, IA 50011-3020, USA. balema@ameslab.gov Y1 - 2002/04/07/ PY - 2002 DA - 2002 Apr 07 SP - 724 EP - 725 IS - 7 SN - 1359-7345, 1359-7345 KW - Industrial Waste KW - 0 KW - Organophosphorus Compounds KW - Index Medicus KW - Mechanics KW - Industrial Waste -- prevention & control KW - Chemistry, Pharmaceutical -- methods KW - Organophosphorus Compounds -- chemical synthesis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71907937?accountid=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=Chemical+communications+%28Cambridge%2C+England%29&rft.atitle=Solvent-free+mechanochemical+synthesis+of+phosphonium+salts.&rft.au=Balema%2C+Viktor+P%3BWiench%2C+Jerzy+W%3BPruski%2C+Marek%3BPecharsky%2C+Vitalij+K&rft.aulast=Balema&rft.aufirst=Viktor&rft.date=2002-04-07&rft.volume=&rft.issue=7&rft.spage=724&rft.isbn=&rft.btitle=&rft.title=Chemical+communications+%28Cambridge%2C+England%29&rft.issn=13597345&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2003-08-08 N1 - Date created - 2002-07-17 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Rapid, specific determination of iodine and iodide by combined solid-phase extraction/diffuse reflectance spectroscopy. AN - 71402164; 11795790 AB - A new, rapid methodology for trace analysis using solid-phase extraction is described. The two-step methodology is based on the concentration of an analyte onto a membrane disk and on the determination by diffuse reflectance spectroscopy of the amount of analyte extracted on the disk surface. This method, which is adaptable to a wide range of analytes, has been used for monitoring ppm levels of iodine and iodide in spacecraft water. Iodine is used as a biocide in spacecraft water. For these determinations, a water sample is passed through a membrane disk by means of a 10-mL syringe that is attached to a disk holder assembly. The disk, which is a polystyrene-divinylbenzene composite, is impregnated with poly(vinylpyrrolidone) (PVP), which exhaustively concentrates iodine as a yellow iodine-PVP complex. The amount of concentrated iodine is then determined in only 2 s by using a hand-held diffuse reflectance spectrometer by comparing the result with a calibration curve based on the Kubelka-Munk function. The same general procedure can be used to determine iodide levels after its facile and exhaustive oxidation to iodine by peroxymonosulfate (i.e., Oxone reagent). For samples containing both analytes, a two-step procedure can be used in which the iodide concentration is calculated from the difference in iodine levels before and after treatment of the sample with peroxymonosulfate. With this methodology, iodine and iodide levels in the 0.1-5.0 ppm range can be determined with a total workup time of approximately 60 s with a RSD of approximately 6%. JF - Analytical chemistry AU - Arena, Matteo P AU - Porter, Marc D AU - Fritz, James S AD - Microanalytical Instrumentation Center, Ames Laboratory-USDOE, and Iowa State University, Ames, Iowa 50011, USA. Y1 - 2002/01/01/ PY - 2002 DA - 2002 Jan 01 SP - 185 EP - 190 VL - 74 IS - 1 SN - 0003-2700, 0003-2700 KW - Disinfectants KW - 0 KW - Peroxides KW - Polystyrenes KW - divinylbenzene-polystyrene copolymer KW - Water KW - 059QF0KO0R KW - Potassium Iodide KW - 1C4QK22F9J KW - peroxymonosulfate KW - 22047-43-4 KW - Povidone KW - 9003-39-8 KW - Iodine KW - 9679TC07X4 KW - Space life sciences KW - Non-NASA Center KW - NASA Discipline Environmental Health KW - Colorimetry -- instrumentation KW - Povidone -- chemistry KW - Colorimetry -- methods KW - Water -- chemistry KW - Peroxides -- chemistry KW - Spectrum Analysis -- methods KW - Spectrum Analysis -- instrumentation KW - Disinfectants -- analysis KW - Polystyrenes -- chemistry KW - Water Supply -- analysis KW - Iodine -- analysis KW - Potassium Iodide -- analysis KW - Spacecraft -- instrumentation KW - Environmental Monitoring -- methods KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71402164?accountid=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=Analytical+chemistry&rft.atitle=Rapid%2C+specific+determination+of+iodine+and+iodide+by+combined+solid-phase+extraction%2Fdiffuse+reflectance+spectroscopy.&rft.au=Arena%2C+Matteo+P%3BPorter%2C+Marc+D%3BFritz%2C+James+S&rft.aulast=Arena&rft.aufirst=Matteo&rft.date=2002-01-01&rft.volume=74&rft.issue=1&rft.spage=185&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2002-03-13 N1 - Date created - 2002-01-17 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - A process for synthesizing polymeric ferric sulphate using sulphur dioxide from coal combustion AN - 19403103; 5937252 AB - We propose a process that uses sulphur dioxide from coal combustion as a raw material to synthesize polymeric ferric sulphate (PFS), a water treatment agent. The process uses sodium chlorate as an oxidant and ferrous sulphate as an absorbent. Sodium carbonate is used as the regulator of the polymerization process. The major chemical mechanisms in this reaction system include oxidation, hydrolysis, and polymerization. Oxidation determines sulphur conversion efficiency while hydrolysis and polymerization control the quality of product. Experiments have shown that the conversion efficiency of sulphur dioxide with ferrous sulphate as an absorbent can be higher than 99% under appropriate process conditions. The temperature of the reaction system is an important factor affecting conversion efficiency of sulphur dioxide. Increasing temperature led to higher conversion efficiencies of sulphur dioxide. The basicity (a polymerization index for PFS) and total concentration in the PFS can be no less than 10% and 9% respectively, which are appropriate for efficient water treatment processes. JF - International Journal of Environment and Pollution AU - Fan, Maohong AU - Browny, R C AU - Sung, Shih Wu AU - Zhuangx, Yahui AD - Centre for Sustainable Environmental Technologies, Iowa State University, 273 Metals Development, Ames, IA 50011, USA, fan@ameslab.gov Y1 - 2002///0, PY - 2002 DA - 0, 2002 VL - 17 IS - 1-2 SN - 0957-4352, 0957-4352 KW - polymerization KW - ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts KW - Chlorophylls KW - Sulphur dioxide KW - Polymerization KW - Sulphur KW - Combustion products KW - Coal KW - Hydrolysis KW - Raw materials KW - Sulphates KW - Sulfur dioxide KW - Water treatment KW - Chemical reactions KW - Absorbents KW - Oxidation KW - P 2000:FRESHWATER POLLUTION KW - Q5 08505:Prevention and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19403103?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Environment+and+Pollution&rft.atitle=A+process+for+synthesizing+polymeric+ferric+sulphate+using+sulphur+dioxide+from+coal+combustion&rft.au=Fan%2C+Maohong%3BBrowny%2C+R+C%3BSung%2C+Shih+Wu%3BZhuangx%2C+Yahui&rft.aulast=Fan&rft.aufirst=Maohong&rft.date=2002-01-01&rft.volume=17&rft.issue=1-2&rft.spage=&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Environment+and+Pollution&rft.issn=09574352&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2007-02-01 N1 - Last updated - 2016-05-27 N1 - SubjectsTermNotLitGenreText - Chlorophylls; Sulphur dioxide; Sulphur; Polymerization; Water treatment; Coal; Raw materials; Hydrolysis; Sulphates; Sulfur dioxide; Combustion products; Chemical reactions; Absorbents; Oxidation ER - TY - JOUR T1 - Preliminary studies of the oxidation of arsenic(III) by potassium ferrate Maohong AN - 16168598; 5924992 AB - Potassium ferrate was synthesized using ferric chloride, and its effects on the oxidation of arsenic(III) in water treatment were investigated. Under given coagulation conditions, the effects of several factors on arsenic oxidation efficiency were examined, which include the mole ratio of Fe(VI) and As(III) added in water and the time elapsed between the addition of potassium ferrate and the measurement of As(III) in treated water. JF - International Journal of Environment and Pollution AU - Fan, Maohong AU - Brown, R C AU - Huang, Chin-Pao AD - Center for Sustainable Environmental Technologies, Iowa State University, Ames, IA 50011, USA, fan@ameslab.gov Y1 - 2002 PY - 2002 DA - 2002 VL - 18 IS - 1 SN - 0957-4352, 0957-4352 KW - potassium ferrate KW - Pollution Abstracts KW - Arsenic KW - Water treatment KW - Oxidation KW - P 2000:FRESHWATER POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16168598?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Journal+of+Environment+and+Pollution&rft.atitle=Preliminary+studies+of+the+oxidation+of+arsenic%28III%29+by+potassium+ferrate+Maohong&rft.au=Fan%2C+Maohong%3BBrown%2C+R+C%3BHuang%2C+Chin-Pao&rft.aulast=Fan&rft.aufirst=Maohong&rft.date=2002-01-01&rft.volume=18&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=International+Journal+of+Environment+and+Pollution&rft.issn=09574352&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2004-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Arsenic; Water treatment; Oxidation ER - TY - JOUR T1 - Chemical modification of carbonaceous stationary phases by the reduction of diazonium salts. AN - 71145605; 11534722 AB - This paper describes a new strategy for the creation of chemically modified carbonaceous stationary phases. The strategy exploits the electroreduction of arenediazonium salts as a means for functionalizing the surface of glassy carbon (GC) and porous graphitic carbon (PGC) stationary phases. The one-electron reduction of these salts forms an arene radical which then couples via a carbon-carbon linkage to the carbon framework at the surface of the stationary phase. Two arenediazonium-based modifiers were used in evaluating the potential utility of this strategy: 4-nitrobenzenediazonium tetrafluoroborate for the GC and PGC phases and 4-hexylbenzenediazonium tetrafluoroborate for only the PGC phases. Modifications were carried out by packing the phases into a column used for electrochemically modulated liquid chromatography. The effectiveness of the modifications was assessed by X-ray photoelectron spectroscopy and by comparing the liquid separation of a series of mixtures before and after coating deposition. For the nitrobenzyl-modified GC phase, the test mixture contained both anisole and fluoranthene. The performance of the nitrobenzyl- and hexylbenzyl-modified PGC stationary phases was characterized by the separations of substituted phenols (i.e., nitrophenol and resorcinol) and a few important pharmaceutical agents (i.e., hexobarbital, oxazepam, and nitrazepam). The potential utility of this modification procedure to form stationary phases that are stable upon extended exposure to aggressive mobile phases is discussed and briefly examined. JF - Analytical chemistry AU - Harnisch, J A AU - Gazda, D B AU - Anderegg, J W AU - Porter, M D AD - Microanalytical Instrumentation Center, Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA. Y1 - 2001/08/15/ PY - 2001 DA - 2001 Aug 15 SP - 3954 EP - 3959 VL - 73 IS - 16 SN - 0003-2700, 0003-2700 KW - Diazonium Compounds KW - 0 KW - 4-nitrobenzene diazonium tetrafluoroborate KW - 73698-41-6 KW - Carbon KW - 7440-44-0 KW - Graphite KW - 7782-42-5 KW - Space life sciences KW - Environmental Monitoring KW - Electrochemistry -- methods KW - Chromatography, Liquid -- methods KW - Diazonium Compounds -- chemistry KW - Graphite -- chemistry KW - Carbon -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71145605?accountid=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=Analytical+chemistry&rft.atitle=Chemical+modification+of+carbonaceous+stationary+phases+by+the+reduction+of+diazonium+salts.&rft.au=Harnisch%2C+J+A%3BGazda%2C+D+B%3BAnderegg%2C+J+W%3BPorter%2C+M+D&rft.aulast=Harnisch&rft.aufirst=J&rft.date=2001-08-15&rft.volume=73&rft.issue=16&rft.spage=3954&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-09-20 N1 - Date created - 2001-09-05 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - High-performance liquid chromatography interfaced with fluorescence line-narrowing spectroscopy for on-line analysis. AN - 77032419; 11289441 AB - We have demonstrated, for the first time, that high-performance liquid chromatography (HPLC) can be interfaced with fluorescence line-narrowing spectroscopy (FLNS) for on-line identification and characterization of analytes. Interfacing centered primarily on the design and construction of a novel liquid helium cryostat that accommodates variable-sized quartz tubes/capillaries suitable for HPLC as well as capillary electrophoresis/electrochromatography. In addition to the high spectral resolution afforded by FLNS, analyzing the separated components at 4.2 K minimizes photodegradation from the excitation source and provides indefinite detection times for signal averaging. The proof-of-principle for the HPLC-FLNS system is first demonstrated with a mixture of four structurally similar polycyclic aromatic hydrocarbons and then applied to the analysis of DNA adducts from mouse skin exposed to the carcinogen dibenzo[a,l]pyrene. With femtomole detection limits, HPLC-FLNS can be used for real-world analyses of complex mixtures. JF - Analytical chemistry AU - Roberts, K P AU - Jankowiak, R AU - Small, G J AD - Ames Laboratory--USDOE, Iowa 50011, USA. Y1 - 2001/03/01/ PY - 2001 DA - 2001 Mar 01 SP - 951 EP - 956 VL - 73 IS - 5 SN - 0003-2700, 0003-2700 KW - Benzopyrenes KW - 0 KW - Carcinogens KW - DNA Adducts KW - Indicators and Reagents KW - Polycyclic Aromatic Hydrocarbons KW - dibenzo(a,l)pyrene KW - G3X629VE4A KW - Index Medicus KW - Skin -- chemistry KW - Animals KW - Skin -- drug effects KW - DNA Adducts -- analysis KW - Benzopyrenes -- analysis KW - Polycyclic Aromatic Hydrocarbons -- analysis KW - Carcinogens -- toxicity KW - Benzopyrenes -- toxicity KW - Online Systems KW - Mice KW - Carcinogens -- analysis KW - Female KW - Chromatography, High Pressure Liquid -- instrumentation KW - Spectrometry, Fluorescence -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77032419?accountid=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=Analytical+chemistry&rft.atitle=High-performance+liquid+chromatography+interfaced+with+fluorescence+line-narrowing+spectroscopy+for+on-line+analysis.&rft.au=Roberts%2C+K+P%3BJankowiak%2C+R%3BSmall%2C+G+J&rft.aulast=Roberts&rft.aufirst=K&rft.date=2001-03-01&rft.volume=73&rft.issue=5&rft.spage=951&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-05-10 N1 - Date created - 2001-04-05 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Insights on Worker Safety and Health Issues AN - 20268006; 8802892 AB - Goal and Background. In 1990, the U.S. Department of Energy (DOE) Laboratory Directors Environmental and Occupational/Public Health Standards Steering Group (SSG) was formed to help establish risk as an organizing principle for environmental cleanup. It was hoped that risk-based cleanup standards would rationalize how clean up work was prioritized within DOE programs and that the SSG could initiate changes to lead to the incorporation of such standards. Whereas the DOE environmental management program was often said to reduce risks, it was clear that disturbing contaminated sites or buildings could put workers at risk. In a real sense, the site remediation process involves the transfer of a hypothetical risk to the environment and the public from isolated contamination into real risks to the workers engaged in the remediation activities. The SSG sought to understand how such risks were managed and how DOE could act to further control and reduce such risks. Over the course of two years, the SSG intensively studied worker safety and health issues associated with environmental remediation activities. The goal of this paper is to summarize the insights gained from this study. Scope. This article reports on the insights resulting from three separate meetings involving workers, their representatives, experts in risk analysis and communication, and site representatives. A commonality was found between the situation facing workers involved in the remediation of DOE and DOD sites and one meeting was cosponsored by the US Air Force. Conclusions. Reduction of risks to the environment and the public is the primary motivation for remedial action. The risks that are incurred by workers during the different phases of a remediation project are seldom considered in determining whether such projects are initiated. Thus, while environmental restoration is driven by the need to protect against hypothetical future risks, less weight is given to exposing workers against real and immediate hazards to their person. Workers have not generally been accorded the same right to participate in cleanup decisions as other important stakeholders and, sadly, both management and workers themselves do not seem to value safety highly. JF - Environmental Science and Pollution Research International AU - Edelson, M AU - Morris, S AU - Daisey, J AD - Ames Laboratory-USDOE, Iowa State University, Ames, IA 50011, USA, edelson@ameslab.gov Y1 - 2001 PY - 2001 DA - 2001 SP - 30 EP - 35 VL - 8 IS - 1 SN - 0944-1344, 0944-1344 KW - Pollution Abstracts; Environment Abstracts KW - Bioremediation KW - Pollution clean-up KW - Buildings KW - Public health KW - risk reduction KW - USA KW - Communications KW - Environmental restoration KW - stakeholders KW - Environment management KW - P 6000:TOXICOLOGY AND HEALTH KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20268006?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Insights+on+Worker+Safety+and+Health+Issues&rft.au=Edelson%2C+M%3BMorris%2C+S%3BDaisey%2C+J&rft.aulast=Edelson&rft.aufirst=M&rft.date=2001-01-01&rft.volume=8&rft.issue=1&rft.spage=30&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/10.1065%2Fespr2001.11.099.7 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - risk reduction; Communications; Bioremediation; Pollution clean-up; Environmental restoration; Environment management; Buildings; stakeholders; Public health; USA DO - http://dx.doi.org/10.1065/espr2001.11.099.7 ER - TY - CPAPER T1 - Comparative study of optical and electronic properties of Rf-sputter-deposited (RFS) and plasma annealed a-Si:H and a-Si:D AN - 41587444; 3454610 AU - Junge, KE AU - Shinar, J AU - Niedes, R AU - Balberg, I Y1 - 2000/12/31/ PY - 2000 DA - 2000 Dec 31 KW - CPI, Conference Papers Index KW - U 5500:Geoscience UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/41587444?accountid=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=&rft.atitle=Comparative+study+of+optical+and+electronic+properties+of+Rf-sputter-deposited+%28RFS%29+and+plasma+annealed+a-Si%3AH+and+a-Si%3AD&rft.au=Junge%2C+KE%3BShinar%2C+J%3BNiedes%2C+R%3BBalberg%2C+I&rft.aulast=Junge&rft.aufirst=KE&rft.date=2000-12-31&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - SuppNotes - Availability: Materials Research Society, 506 Keystone Drive, Warrendale, PA 15086-7573, USA; phone: 724-779-3003; fax: 724-779-8313; email: info@mrs.org; URL: www.mrs.org/publications/books, Abstracts available. Price $25 + $4 S & H. Poster Paper No. A7.1 N1 - Last updated - 2010-05-03 ER - TY - JOUR T1 - Graphite microparticles as coatings for quartz crystal microbalance-based gas sensors. AN - 72528523; 11140766 AB - The use of graphite particles (1-2 microm) as coatings on quartz crystal microbalances (QCMs) for detection and monitoring of toluene and other volatile organic compounds (VOCs) is described. Unlike the more commonly used polymeric coatings with low glass transition temperatures (Tg), particulate graphitic coatings are not as susceptible to loss of acoustic energy when coating thickness or operational temperature increases. This situation enables the use of relatively thick coatings, which increases the absolute amount of vapor sorbed in the coating and, consequently, lowers the level of detection and enhances operation over a wide temperature range. The use of small size particles also results in a coating with a more porous structure, which facilitates uptake and release of VOCs in comparison to coatings made from high Tg polymers, which have a lower porosity. These attributes, coupled with the inherent stability of graphitic materials, make particulate graphite coatings especially suitable for applications at high temperatures. The advantages of using particulate graphite as a coating on QCMs are demonstrated by comparison to the performance of a few low-Tg polymers [i.e., poly(isobutylene) and poly(diphenoxyphosphazene)] and high-Tg polymers (i.e., polystyrene). JF - Analytical chemistry AU - Shinar, R AU - Liu, G AU - Porter, M D AD - Microanalytical Instrumentation Center, Ames Laboratory-USDOE, and Department of Chemistry, Iowa State University, 50011, USA. rshinar@iastate.edu Y1 - 2000/12/15/ PY - 2000 DA - 2000 Dec 15 SP - 5981 EP - 5987 VL - 72 IS - 24 SN - 0003-2700, 0003-2700 KW - Gases KW - 0 KW - Quartz KW - 14808-60-7 KW - Toluene KW - 3FPU23BG52 KW - Graphite KW - 7782-42-5 KW - Space life sciences KW - Crystallization KW - Temperature KW - Toluene -- analysis KW - Gases -- analysis KW - Graphite -- chemistry KW - Environmental Monitoring -- instrumentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72528523?accountid=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=Analytical+chemistry&rft.atitle=Graphite+microparticles+as+coatings+for+quartz+crystal+microbalance-based+gas+sensors.&rft.au=Shinar%2C+R%3BLiu%2C+G%3BPorter%2C+M+D&rft.aulast=Shinar&rft.aufirst=R&rft.date=2000-12-15&rft.volume=72&rft.issue=24&rft.spage=5981&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2001-01-25 N1 - Date created - 2001-01-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Monoclonal antibody--gold biosensor chips for detection of depurinating carcinogen--DNA adducts by fluorescence line-narrowing spectroscopy. AN - 72208404; 10959953 AB - A new direct readout methodology for detection and quantitation of fluorescent carcinogen-DNA adducts is described. It combines the binding specificity of an immobilized monoclonal antibody (MAb) with high-resolution, low-temperature fluorescence spectroscopy. The MAb, which is covalently bound to a gold surface via a chemisorbed disulfide coupling agent, binds the adduct of interest in an aqueous sample. Laser-induced fluorescence under nonline narrowing (FNLN) and line-narrowing (FLN) conditions was used to detect (benzo[a]pyren-6-yl)guanine (BP-6-N7Gua) bound to immobilized MAb. At room temperature, the BP-6-N7Gua fluorescence was not detected, most likely because of quenching by the gold surface and/or efficient dynamical quenching. However, fluorescence was observed at room temperature when the surface was covered with a thin layer of glycerol, and possible reasons for the fluorescence enhancement are considered. Lowering of the temperature to 77 K led to nearly an order of magnitude increase in fluorescence intensity. Highly structured FLN spectra obtained at 4.2 K allowed for definitive adduct identification. The potential of this methodology for risk assessments of individuals exposed to polycyclic aromatic hydrocarbons is discussed. JF - Analytical chemistry AU - Duhachek, S D AU - Kenseth, J R AU - Casale, G P AU - Small, G J AU - Porter, M D AU - Jankowiak, R AD - Ames Laboratory-USDOE and Department of Chemistry, Microanalytical Instrumentation Center, Iowa State University, 50011, USA. Y1 - 2000/08/15/ PY - 2000 DA - 2000 Aug 15 SP - 3709 EP - 3716 VL - 72 IS - 16 SN - 0003-2700, 0003-2700 KW - Antibodies, Monoclonal KW - 0 KW - Carcinogens KW - DNA Adducts KW - Gold KW - 7440-57-5 KW - Index Medicus KW - Antibody Specificity KW - Spectrometry, Fluorescence -- methods KW - DNA Adducts -- immunology KW - DNA Adducts -- analysis KW - Carcinogens -- chemistry KW - Microscopy, Atomic Force -- methods KW - Antibodies, Monoclonal -- chemistry KW - Gold -- chemistry KW - Biosensing Techniques KW - Antibodies, Monoclonal -- immunology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72208404?accountid=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=Analytical+chemistry&rft.atitle=Monoclonal+antibody--gold+biosensor+chips+for+detection+of+depurinating+carcinogen--DNA+adducts+by+fluorescence+line-narrowing+spectroscopy.&rft.au=Duhachek%2C+S+D%3BKenseth%2C+J+R%3BCasale%2C+G+P%3BSmall%2C+G+J%3BPorter%2C+M+D%3BJankowiak%2C+R&rft.aulast=Duhachek&rft.aufirst=S&rft.date=2000-08-15&rft.volume=72&rft.issue=16&rft.spage=3709&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2000-09-20 N1 - Date created - 2000-09-20 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Comment In: Anal Chem. 2000 Sep 1;72(17):578A-579A [10994942] N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Genetic typing and HIV-1 diagnosis by using 96 capillary array electrophoresis and ultraviolet absorption detection. AN - 71152188; 10839127 AB - Current high-throughput approaches to the analysis of PCR products are based primarily on electrophoretic separation and laser-excited fluorescence detection. We show that capillary array electrophoresis can be applied to HIV-1 diagnosis and D1S80 VNTR genetic typing based simply on UV absorption detection. The additive contribution of each base pair to the total absorption signal provides adequate detection sensitivity for analyzing most PCR products. Not only is the use of specialized and potentially toxic fluorescent labels eliminated, but also the complexity and cost of the instrumentation are greatly reduced. JF - Journal of chromatography. B, Biomedical sciences and applications AU - Gong, X AU - Yeung, E S AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, 50011, USA. Y1 - 2000/04/28/ PY - 2000 DA - 2000 Apr 28 SP - 15 EP - 21 VL - 741 IS - 1 SN - 1387-2273, 1387-2273 KW - Index Medicus KW - AIDS/HIV KW - Sensitivity and Specificity KW - Polymerase Chain Reaction KW - Humans KW - Spectrophotometry, Ultraviolet KW - HIV-1 -- genetics KW - HIV Infections -- virology KW - HIV-1 -- isolation & purification KW - Electrophoresis, Capillary -- methods KW - HIV Infections -- diagnosis KW - HIV-1 -- classification UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/71152188?accountid=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+chromatography.+B%2C+Biomedical+sciences+and+applications&rft.atitle=Genetic+typing+and+HIV-1+diagnosis+by+using+96+capillary+array+electrophoresis+and+ultraviolet+absorption+detection.&rft.au=Gong%2C+X%3BYeung%2C+E+S&rft.aulast=Gong&rft.aufirst=X&rft.date=2000-04-28&rft.volume=741&rft.issue=1&rft.spage=15&rft.isbn=&rft.btitle=&rft.title=Journal+of+chromatography.+B%2C+Biomedical+sciences+and+applications&rft.issn=13872273&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 2000-09-20 N1 - Date created - 2000-09-20 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Spectral and conformational analysis of deoxyadenosine adducts derived from syn- and anti-Dibenzo[a,l]pyrene diol epoxides: fluorescence studies. AN - 70045658; 10490497 AB - Low-temperature fluorescence spectra and results of conformational studies with trans-syn-, cis-syn-, trans-anti-, and cis-anti-dibenzo[a,l]pyrene diol epoxide (DB[a,l]PDE)-derived deoxyadenosine (dA) adducts are presented and compared with those previously obtained for the stereoisomeric DB[a,l]P tetrols [Jankowiak, R., et al. (1997) Chem. Res. Toxicol. 10, 677-686]. In contrast to DB[a,l]P tetrols, for which only trans isomers exhibited two conformers, all stereoisomeric dA adducts adopt two different conformations with either half-chair or half-boat structures for the cyclohexenyl ring, and an "open"- or "folded"-type configuration between dA and the DB[a,l]P moiety. The major conformations observed for trans-syn-, cis-syn-, and cis-anti-DB[a,l]PDE-14-N(6)dA could be assigned on the basis of the previous calculations for the DB[a,l]P tetrols. The major conformers of the trans-syn- and cis-syn-DB[a, l]PDE-14-N(6)dA adducts exist in conformations I and II, with their fluorescence origin bands at approximately 382 and approximately 389 nm, respectively. In conformation I, the cyclohexenyl ring adopts a half-boat structure with dA in a pseudoaxial position (an open configuration), whereas the cyclohexenyl ring in conformation II adopts a half-chair structure with dA in pseudoequatorial position (a folded configuration). The major conformation of cis-anti-DB[a, l]PDE-14-N(6)dA, with its origin band at approximately 389 nm, was also assigned as a folded-type configuration with a half-chair structure in the cyclohexenyl ring. Molecular mechanics and dynamical simulations were performed for interpretation of the low-temperature fluorescence spectra and (1)H NMR coupling constants observed for the trans-anti-DB[a,l]PDE-14-N(6)dA adduct. The major conformer of this adduct has a half-chair structure in the cyclohexenyl ring, but a deviation from planarity in the fjord region different from that of conformer II of cis-anti-DB[a, l]PDE-N(6)dA. This new structure is labeled as conformer II'. Its (0, 0) fluorescence band is at 388.1 and 388.3 nm in ethanol and glycerol/water glasses, respectively, consistent with the folded-type configuration revealed by the calculations. The fluorescence line-narrowed spectra reveal that the trans-syn-, cis-syn-, trans-anti-, and cis-anti-DB[a,l]PDE-14-N(6)dA adducts can be distinguished. Thus, their spectra should prove useful for identification of DB[a,l]P-DNA adducts formed at low levels in biological samples. JF - Chemical research in toxicology AU - Jankowiak, R AU - Lin, C H AU - Zamzow, D AU - Roberts, K P AU - Li, K M AU - Small, G J AD - Ames Laboratory-U.S. Department of Energy and Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA. jankowiak@ameslab.gov Y1 - 1999/09// PY - 1999 DA - September 1999 SP - 768 EP - 777 VL - 12 IS - 9 SN - 0893-228X, 0893-228X KW - Benzopyrenes KW - 0 KW - DNA Adducts KW - Deoxyadenosines KW - Epoxy Compounds KW - 11,12-dihydroxy-13,14-epoxy-11,12,13,14-tetrahydrodibenzo(a,l)pyrene KW - 153857-28-4 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Molecular Structure KW - Stereoisomerism KW - Spectrometry, Fluorescence KW - Molecular Conformation KW - Benzopyrenes -- chemistry KW - DNA Adducts -- chemistry KW - Epoxy Compounds -- chemistry KW - DNA -- chemistry KW - Deoxyadenosines -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70045658?accountid=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=Chemical+research+in+toxicology&rft.atitle=Spectral+and+conformational+analysis+of+deoxyadenosine+adducts+derived+from+syn-+and+anti-Dibenzo%5Ba%2Cl%5Dpyrene+diol+epoxides%3A+fluorescence+studies.&rft.au=Jankowiak%2C+R%3BLin%2C+C+H%3BZamzow%2C+D%3BRoberts%2C+K+P%3BLi%2C+K+M%3BSmall%2C+G+J&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1999-09-01&rft.volume=12&rft.issue=9&rft.spage=768&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-11-15 N1 - Date created - 1999-11-15 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - On-line identification of diastereomeric dibenzo[a,l]pyrene diol epoxide-derived deoxyadenosine adducts by capillary electrophoresis-fluorescence line-narrowing and non-line narrowing spectroscopy. AN - 70044619; 10486722 AB - A capillary electrophoretic method for the separation and on-line identification of closely related analytes using low-temperature fluorescence spectroscopy is reported for the eight diastereomeric deoxyadenosine (dA) adducts derived from dibenzo[a,l]pyrene diol epoxide (DB[a,l]PDE). Electrophoretic separation of stereoisomers was accomplished by application of a mixed surfactant buffer [dioctyl sulfosuccinate (DOSS) and Brij-S], which was below the critical micelle concentration (CMC) due to the high concentration (approximately 25%) of organic solvent. Addition of multiple surfactant additives to the separation buffer provided electrophoretic resolution, which was unattainable under single surfactant conditions. It is shown that the CE-separated analyte zones could be identified on-line via low-temperature (4.2 K) fluorescence non-line narrowing and fluorescence line-narrowing (FLN) spectroscopy. In addition, it was determined that in CE buffer trans-syn-,cis-syn- and cis-anti-DB[a,l]PDE-14-N6dA diastereomeric adducts exist mostly with the -dA and DB[a,l]P moiety in an "open"-type conformation while the trans-anti-DB[a,l]PDE-14-N6dA adducts exist in two different conformations whose relative distribution depends on matrix composition. The above conformations have also been revealed by selective laser excitation. Thus, the low-temperature methodology not only provides fingerprint structure via vibrationally resolved 4.2 K fluorescence spectra for adduct identification, but also provides conformational information on the spatial relationship of the carcinogen and dA moiety. These results, taken together with those for DB[a,l]P-DNA adducts formed in standard glasses and mouse epidermis exposed to DB[a,l]P, support our earlier findings that DB[a,l]P-derived adducts exist in different conformations [Jankowiak et al., Chem. Res. Toxicol. 11 (1998) 674]. Therefore, the combination of the separation power of CE and spectral selectivity of low-temperature fluorescence spectroscopy at NLN and FLN conditions provides a powerful methodology which should prove useful for identification of closely related DNA adducts formed at low levels in biological systems. JF - Journal of chromatography. A AU - Roberts, K P AU - Lin, C H AU - Jankowiak, R AU - Small, G J AD - Ames Laboratory-US Department of Energy, Iowa Sate University 50011, USA. Y1 - 1999/08/20/ PY - 1999 DA - 1999 Aug 20 SP - 159 EP - 170 VL - 853 IS - 1-2 SN - 0021-9673, 0021-9673 KW - Benzopyrenes KW - 0 KW - Buffers KW - Carcinogens KW - DNA Adducts KW - Deoxyadenosines KW - Epoxy Compounds KW - dibenzo(a,l)pyrene diol epoxide KW - Index Medicus KW - Stereoisomerism KW - Spectrometry, Fluorescence KW - Temperature KW - Online Systems KW - Carcinogens -- analysis KW - Epoxy Compounds -- analysis KW - Deoxyadenosines -- analysis KW - DNA Adducts -- analysis KW - Benzopyrenes -- analysis KW - Deoxyadenosines -- chemistry KW - Electrophoresis, Capillary -- methods UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70044619?accountid=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+Information+Technology+Education%3A+Innovations+in+Practice&rft.atitle=Learning+from+Online+Video+Lectures&rft.au=Brecht%2C+David+H.&rft.aulast=Brecht&rft.aufirst=David&rft.date=2012-01-01&rft.volume=11&rft.issue=&rft.spage=227&rft.isbn=&rft.btitle=&rft.title=Journal+of+Information+Technology+Education%3A+Innovations+in+Practice&rft.issn=21653151&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-10-26 N1 - Date created - 1999-10-26 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Electrochemical incineration of 4-chlorophenol and the identification of products and intermediates by mass spectrometry AN - 17378999; 4608353 AB - This report summarizes results obtained as part of a larger effort to demonstrate the applicability of electrolytic procedures for the direct anodic (oxidative) degradation of toxic organic wastes. We refer to this process as "electrochemical incineration" (ECI) because the ultimate degradation products, e.g., carbon dioxide, are equivalent to those achieved by thermal incineration processes. In this work, the ECI of 4-chlorophenol is achieved in an aqueous medium using a platinum anode coated with a quaternary metal oxide film containing Ti, Ru, Sn, and Sb oxides. The electrode is stable and active when used with a solid Nafion membrane without the addition of soluble supporting electrolyte. Liquid chromatography (LC), including reverse phase and ion exchange chromatography, is coupled with electrospray mass spectrometry (ES-MS) and used, along with gas chromatography--mass spectrometry (GC-MS) and measurements of pH, chemical oxygen demand (COD), and total organic carbon (TOC), to study the reaction and identify the intermediate products from the ECI of 4-chlorophenol. Twenty-six intermediate products are identified and reported. The most abundant of these products are benzoquinone, 4-chlorocatechol, maleic acid, succinic acid, malonic acid, and the inorganic anions chloride, chlorate, and perchlorate. After 24 h of ECI, a solution that initially contained 108 ppm 4-chlorophenol yields only 1 ppm TOC with 98% of the original chlorine remaining in the specified inorganic forms. LC-ES-MS and direct infusion ES-MS detection limits are between 80 ppb and 4 ppm for these intermediate products. Elemental analysis of the electrolyzed solutions by inductively coupled plasma mass spectrometry ICP-MS showed that only trace amounts (<25 ppb) of the metallic elements comprising the metal oxide film were present in the solution. JF - Environmental Science & Technology AU - Johnson, S K AU - Houk, L L AU - Feng, J AU - Houk, R S AU - Johnson, D C AD - Ames Laboratory-U.S. Department of Energy, Microanalytical Instrumentation Center, Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA Y1 - 1999/08/01/ PY - 1999 DA - 1999 Aug 01 SP - 2638 EP - 2644 VL - 33 IS - 15 SN - 0013-936X, 0013-936X KW - 4-chlorophenol KW - Pollution Abstracts KW - Organic wastes KW - Toxic materials KW - Mass spectrometry KW - Incineration KW - Liquid chromatography KW - Oxidation KW - Electrochemistry KW - P 4000:WASTE MANAGEMENT UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17378999?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Electrochemical+incineration+of+4-chlorophenol+and+the+identification+of+products+and+intermediates+by+mass+spectrometry&rft.au=Johnson%2C+S+K%3BHouk%2C+L+L%3BFeng%2C+J%3BHouk%2C+R+S%3BJohnson%2C+D+C&rft.aulast=Johnson&rft.aufirst=S&rft.date=1999-08-01&rft.volume=33&rft.issue=15&rft.spage=2638&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Incineration; Electrochemistry; Mass spectrometry; Organic wastes; Oxidation; Toxic materials; Liquid chromatography ER - TY - JOUR T1 - Collection and Thermal Evolution Behaviors of Different Mercury Species Captured with Gold AN - 17393277; 4611552 AB - The effects of temperature on the collection and evolution of different mercury (Hg) species captured with gold were investigated to help determine if temperature control could be used to provide Hg speciation information in gaseous effluents. Elemental mercury, dimethyl mercury, and mercuric chloride were loaded onto a gold trap (one Hg species per test) at temperatures of 25-375 degree C. The Hg was then evolved (in argon) at 900 degree C. In other tests, Hg was loaded onto the trap at 25 degree C and then heated (in argon) at 50-1000 degree C to release Hg. The argon streams were analyzed using cold vapor atomic fluorescence to obtain information on Hg collection and evolution as a function of temperature. The Hg was released from the gold entirely as elemental mercury, regardless of the Hg species collected. Temperatures of about 250 degree C were required to release the Hg, and there were no differences among Hg species with respect to the temperatures necessary to evolve the Hg. Results of the tests on Hg collection efficiency versus the temperature of the gold trap indicated that proper selection of the collection temperature could potentially be used to provide Hg speciation information. However, refinements in the technique are necessary before it can be put into practical use. JF - Environmental Science & Technology AU - Aeschliman, D B AU - Norton, G A AD - Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA, norton@ameslab.gov Y1 - 1999/07/01/ PY - 1999 DA - 1999 Jul 01 SP - 2278 EP - 2283 PB - American Chemical Society VL - 33 IS - 13 SN - 0013-936X, 0013-936X KW - Pollution Abstracts KW - Gases KW - Chemical speciation KW - Temperature KW - Gold KW - Mercury KW - P 9000:ENVIRONMENTAL ACTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17393277?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Collection+and+Thermal+Evolution+Behaviors+of+Different+Mercury+Species+Captured+with+Gold&rft.au=Aeschliman%2C+D+B%3BNorton%2C+G+A&rft.aulast=Aeschliman&rft.aufirst=D&rft.date=1999-07-01&rft.volume=33&rft.issue=13&rft.spage=2278&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mercury; Gold; Temperature; Gases; Chemical speciation ER - TY - JOUR T1 - Spectral characterization of fluorescently labeled catechol estrogen 3,4-quinone-derived N7 guanine adducts and their identification in rat mammary gland tissue. AN - 70059126; 9815195 AB - The oxidation of carcinogenic 4-hydroxycatechol estrogens (CE) of estrone (E1) and estradiol (E2) to catechol estrogen 3,4-quinones (CE-3,4-Q) results in electrophilic intermediates that covalently bind to DNA to form depurinating adducts [Cavalieri et al. (1997) Proc. Natl. Acad. Sci. U.S.A. 94, 10937]. These DNA adducts, 4-OHE1-1-N7Gua and 4-OHE2-1-N7Gua, are nonfluorescent. To utilize laser-excited fluorescence methods, the catechol estrogen-derived metabolites and adducts were labeled with a fluorescent marker. The 4-OHEi-1-N7Gua adduct standards (i = 1, 2) and 4-OHEi metabolites have been derivatized with 1-pyrenesulfonyl chloride and investigated by low-temperature spectroscopy under non-line-narrowing and line-narrowing conditions. Molecular modeling studies assisted in interpretation of the fluorescence spectra; energetically favored structures of the 4-OHE2-1-N7Gua-dipyrene adduct and 4-OHE2-dipyrene metabolite reveal unique conformations which, in agreement with fluorescence data, show a significant pi-pi interaction of pyrene labels with guanine and/or the aromatic ring of catechol estrogen. The conformation obtained for the 4-OHE2-1-N7Gua-dipyrene adduct appears to be conducive to mixing of its pipi state with pyrene-guanine charge-transfer states, consistent with the experimentally observed strong electron-phonon coupling. Non-line-narrowed and line-narrowed spectra obtained at 77 and 4.2 K, respectively, are shown to distinguish 4-OHE2-1-N7Gua-dipyrene adducts from 4-OHE2-dipyrene metabolites. These standards have subsequently been used for the spectroscopic identification of depurinating DNA adducts formed in a tissue culture experiment where rat mammary gland tissue was treated with the estrogen quinone E2-3,4-Q. The depurinating adduct formed is 4-OHE2-1-N7Gua. JF - Chemical research in toxicology AU - Jankowiak, R AU - Zamzow, D AU - Stack, D E AU - Todorovic, R AU - Cavalieri, E L AU - Small, G J AD - Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA. jankowiak@ameslab.gov Y1 - 1998/11// PY - 1998 DA - November 1998 SP - 1339 EP - 1345 VL - 11 IS - 11 SN - 0893-228X, 0893-228X KW - Estrogens, Catechol KW - 0 KW - catechol estrogen 3,4-quinone KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Rats KW - Animals KW - Rats, Sprague-Dawley KW - Models, Molecular KW - DNA -- chemistry KW - Organ Culture Techniques KW - Female KW - Chromatography, High Pressure Liquid KW - Mammary Glands, Animal -- chemistry KW - Estrogens, Catechol -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70059126?accountid=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+Review+Special+Topics+-+Physics+Education+Research&rft.atitle=Introduction+of+Interactive+Learning+into+French+University+Physics+Classrooms&rft.au=Rudolph%2C+Alexander+L.%3BLamine%2C+Brahim%3BJoyce%2C+Michael%3BVignolles%2C+H%C3%A9l%C3%A8ne%3BConsiglio%2C+David&rft.aulast=Rudolph&rft.aufirst=Alexander&rft.date=2014-01-01&rft.volume=10&rft.issue=1&rft.spage=010103&rft.isbn=&rft.btitle=&rft.title=Physical+Review+Special+Topics+-+Physics+Education+Research&rft.issn=E15549178&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-01-11 N1 - Date created - 1999-01-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Structure, conformations, and repair of DNA adducts from dibenzo[a,l]pyrene: super(32)P-postlabeling and fluorescence studies AN - 17119300; 4423127 AB - The nature of stable DNA adducts derived from the very potent carcinogen dibenzo[a,l]pyrene (DB[a,l]P) in the presence of rat liver microsomes in vitro and in mouse skin in vivo has been studied using super(32)P-postlabeling and laser-based fluorescence techniques. Analysis of DB[a,l]P-DNA adducts via super(32)p-postlabeling has been obtained by comparison of the adduct patterns to those obtained from reactions of synthetic ( plus or minus )-anti-, (+)-anti-, (-)-anti-, and ( plus or minus )-syn-DB[a,l]P-11,12-diol 13,14-epoxide (DB[a,l]PDE) with single nucleotides and calf thymus DNA. anti-DB[a,l]PDE-dA adducts derived from the (-)-enantiomer are the major adducts formed in calf thymus DNA and in mouse skin DNA. The ratio of deoxyadenosine to deoxyguanosine modification is approximately 2:1 in mouse skin exposed to DB[a,l]P; activation by rat liver microsomes leads to a similar profile of adducts but with two additional spots. The conformations of DB[a,l]P adducts in native DNA, as well as the possibility of conformation-dependent repair, have been explored by low-temperature fluorescence spectroscopy. These studies have been performed using polynucleotides and calf thymus DNA reacted in vitro with DB[a,l]PDE and native DNA from mouse epidermis exposed to DB[a,l]P. The results show that adducts are heterogeneous, possess different structures, and adopt different conformations. External, external but base-stacked and intercalated adduct conformations are observed in calf thymus DNA and in mouse skin DNA samples. Differences in adduct repair rates are also revealed; namely, the analysis of mouse skin DNA samples obtained at 24 and 48 h after exposure to DB[a,l]P clearly shows that external adducts are repaired more efficiently than intercalated adducts. These results, taken together with those for B[a]P-DNA adducts, indicate that the repair of DNA damage resulting from PAH diol epoxides is conformation-dependent. JF - Chemical Research in Toxicology AU - Jankowiak, R AU - Ariese, F AU - Hewer, A AU - Luch, A AU - Zamzow, D AU - Hughes, N C AU - Phillips, D AU - Seidel, A AU - Platt, K-L AU - Oesch, F AU - Small, G J AD - Ames Laboratory-USDOE, Iowa State University, 706 Gilman Hall, Ames, IA 50011-3111, USA, jankowiak@ameslab.gov Y1 - 1998/06// PY - 1998 DA - Jun 1998 SP - 674 EP - 685 VL - 11 IS - 6 SN - 0893-228X, 0893-228X KW - conformation KW - Toxicology Abstracts KW - DNA adducts KW - Microsomes KW - Dibenzo(a,1)pyrene KW - Liver KW - Carcinogens KW - DNA repair KW - X 24190:Polycyclic hydrocarbons UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17119300?accountid=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=Chemical+Research+in+Toxicology&rft.atitle=Structure%2C+conformations%2C+and+repair+of+DNA+adducts+from+dibenzo%5Ba%2Cl%5Dpyrene%3A+super%2832%29P-postlabeling+and+fluorescence+studies&rft.au=Jankowiak%2C+R%3BAriese%2C+F%3BHewer%2C+A%3BLuch%2C+A%3BZamzow%2C+D%3BHughes%2C+N+C%3BPhillips%2C+D%3BSeidel%2C+A%3BPlatt%2C+K-L%3BOesch%2C+F%3BSmall%2C+G+J&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1998-06-01&rft.volume=11&rft.issue=6&rft.spage=674&rft.isbn=&rft.btitle=&rft.title=Chemical+Research+in+Toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Liver; DNA repair; Microsomes; Carcinogens; Dibenzo(a,1)pyrene; DNA adducts ER - TY - JOUR T1 - Aluminum phthalocyanine tetrasulfonate in MCF-10F, human breast epithelial cells: a hole burning study. AN - 79883316; 9591692 AB - Laser-induced holes are burned in the absorption spectrum of aluminum phthalocyanine tetrasulfonate (APT) in MCF-10F, human breast epithelial cells. The hole burning mechanism is shown to be nonphotochemical. The fluorescence excitation spectra and hole spectra are compared with those of APT in hyperquenched glassy films of water, ethanol, and methanol. The results show that the APT is in an acidic, aqueous environment with a hydrogen-bonded network similar to that of glassy water, but showing the influence of other cellular components. Pressure shifts of holes allow the local compressibility about the APT to be determined. JF - Biophysical journal AU - Milanovich, N AU - Reinot, T AU - Hayes, J M AU - Small, G J AD - Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, 50011, USA. Y1 - 1998/05// PY - 1998 DA - May 1998 SP - 2680 EP - 2688 VL - 74 IS - 5 SN - 0006-3495, 0006-3495 KW - Indoles KW - 0 KW - Organometallic Compounds KW - Radiation-Sensitizing Agents KW - aluminum tetrasulfophthalocyanine KW - 122170-90-5 KW - Index Medicus KW - Spectrometry, Fluorescence KW - Humans KW - Breast KW - Cell Division -- drug effects KW - Lasers KW - Radiation-Sensitizing Agents -- toxicity KW - Female KW - Cell Line KW - Cell Survival KW - Epithelial Cells -- cytology KW - Epithelial Cells -- drug effects KW - Indoles -- toxicity KW - Organometallic Compounds -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/79883316?accountid=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=Biophysical+journal&rft.atitle=Aluminum+phthalocyanine+tetrasulfonate+in+MCF-10F%2C+human+breast+epithelial+cells%3A+a+hole+burning+study.&rft.au=Milanovich%2C+N%3BReinot%2C+T%3BHayes%2C+J+M%3BSmall%2C+G+J&rft.aulast=Milanovich&rft.aufirst=N&rft.date=1998-05-01&rft.volume=74&rft.issue=5&rft.spage=2680&rft.isbn=&rft.btitle=&rft.title=Biophysical+journal&rft.issn=00063495&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1998-07-16 N1 - Date created - 1998-07-16 N1 - Date revised - 2017-02-17 N1 - SuppNotes - Cited By: Chem Res Toxicol. 1991 May-Jun;4(3):256-69 [1912307] Photochem Photobiol. 1991 Jun;53(6):859-70 [1886943] Photochem Photobiol. 1992 Jan;55(1):145-57 [1603846] Int J Cancer. 1994 Sep 15;58(6):865-70 [7927880] Carcinogenesis. 1996 Apr;17(4):829-37 [8625498] Photochem Photobiol. 1996 Sep;64(3):469-85 [8806226] J Microsc. 1977 Sep;111(1):17-34 [342699] J Microsc. 1977 Sep;111(1):3-16 [342700] J Histochem Cytochem. 1979 Jan;27(1):36-43 [220325] J Histochem Cytochem. 1979 Jan;27(1):44-8 [438504] Photochem Photobiol. 1986 Jun;43(6):691-9 [3092251] Proc Natl Acad Sci U S A. 1987 Oct;84(20):7295-9 [2823256] Cancer Lett. 1987 Dec;38(1-2):215-22 [3690510] Cancer Res. 1990 Sep 15;50(18):6075-86 [1975513] Cancer Res. 1990 Sep 15;50(18):6087-94 [1697506] Int J Cancer. 1991 Sep 9;49(2):290-5 [1879972] Chem Res Toxicol. 1988 Jan-Feb;1(1):60-8 [2979713] N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - ESC; how it differs from current state of the practice AN - 50912449; 1999-060518 JF - Proceedings of SAGEEP AU - Benson, Richard C AU - Bevolo, Al AU - Beam, Paul A2 - Bell, Ronald S. A2 - Powers, Michael H. A2 - Larson, Timothy Y1 - 1998/03// PY - 1998 DA - March 1998 SP - 531 EP - 540 PB - Environmental and Engineering Geophysical Society, Wheat Ridge, CO VL - 1998 KW - United States KW - programs KW - U. S. Department of Energy KW - decontamination KW - site exploration KW - practice KW - reclamation KW - government agencies KW - characterization KW - ESC strategy KW - Expedited Site Characterization KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50912449?accountid=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=Proceedings+of+SAGEEP&rft.atitle=ESC%3B+how+it+differs+from+current+state+of+the+practice&rft.au=Benson%2C+Richard+C%3BBevolo%2C+Al%3BBeam%2C+Paul&rft.aulast=Benson&rft.aufirst=Richard&rft.date=1998-03-01&rft.volume=1998&rft.issue=&rft.spage=531&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+SAGEEP&rft.issn=1554-8015&rft_id=info:doi/ L2 - http://scitation.aip.org/sageep/ LA - English DB - GeoRef N1 - Conference title - Environmental and Engineering Geophysical Society 11th annual meeting , symposium on the Application of geophysics to environmental and engineering problems N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 13 N1 - PubXState - CO N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - characterization; decontamination; ESC strategy; Expedited Site Characterization; government agencies; practice; programs; reclamation; site exploration; U. S. Department of Energy; United States ER - TY - RPRT T1 - Report on expedited site characterization of the Central Nevada Test Area, Nye County, Nevada AN - 52417156; 2000-000212 AB - This report documents data collection, results, and interpretation of the expedited site characterization (ESC) pilot project conducted from September 1996 to June 1997 at the Central Nevada Test Area (CNTA), Nye County, Nevada. Characterization activities were limited to surface sites associated with deep well drilling and ancillary operations at or near three emplacement well areas. Environmental issues related to the underground nuclear detonation (Project Faultless) and hydrologic monitoring wells were not addressed as a part of this project. The CNTA was divided into four functional areas for the purpose of this investigation and report. These areas include the vicinity of three emplacement wells (UC-1, UC-3, and UC-4) and one mud waste drilling mud collection location (Central Mud Pit; CMP). Each of these areas contain multiple, potentially contaminated features, identified either from historic information, on-site inspections, or existing data. These individual features are referred to hereafter as "sites". The project scope of work involved site reconnaissance, establishment of local grid systems, site mapping and surveying, geophysical measurements, and collection and chemical analysis of soil and drilling mud samples. Section 2.0 through Section 4.0 of this report provide essential background information about the site, project, and details of how the ESC method was applied at CNTA. Detailed discussion of the scope of work is provided in Section 5.0, including procedures used and locations and quantities of measurements obtained. Results and interpretations for each of the four functional areas are discussed separately in Sections 6.0, 7.0, 8.0, and 9.0. These sections provide a chronological presentation of data collected and results obtained, followed by interpretation on a site-by-site basis. Key data is presented in the individual sections. The comprehensive set of data is contained in appendices. JF - Report on expedited site characterization of the Central Nevada Test Area, Nye County, Nevada AU - Yuhr, L AU - Wonder, J D AU - Bevolo, A J Y1 - 1997/09// PY - 1997 DA - September 1997 SP - 634 VL - IS-5113 KW - United States KW - soils KW - concentration KW - geophysical surveys KW - isotopes KW - explosions KW - site exploration KW - pollution KW - observation wells KW - Nye County Nevada KW - Nevada Test Site KW - radioactive isotopes KW - surveys KW - drilling KW - nuclear explosions KW - chemical composition KW - Nevada KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52417156?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Yuhr%2C+L%3BWonder%2C+J+D%3BBevolo%2C+A+J&rft.aulast=Yuhr&rft.aufirst=L&rft.date=1997-09-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Report+on+expedited+site+characterization+of+the+Central+Nevada+Test+Area%2C+Nye+County%2C+Nevada&rft.title=Report+on+expedited+site+characterization+of+the+Central+Nevada+Test+Area%2C+Nye+County%2C+Nevada&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 2000-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE98004657NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - JOUR T1 - Conformational studies of stereoisomeric tetrols derived from syn- and anti-dibenzo[a,l]pyrene diol epoxides. AN - 79098008; 9208175 AB - An understanding of the conformational behavior of the stereoisomeric tetrols at the 11,12,13,14-positions of dibenzo[a,l]pyrene (DB[a,l]P) is essential for the spectroscopic identification of DNA adducts derived from the biologically highly active fjord region syn- and anti-DB[a,l]P-11,12-diol 13,14-epoxides. Conformational effects are expected to play an important role in DNA-DB[a,l]P diol epoxide reactivity, base-sequence specificity, and conformation dependent repair. The results of conformational studies on trans-anti-, cis-anti-, and cis-syn-DB[a,l]P tetrol isomers are presented and compared to the results obtained previously for trans-syn-DB[a,l]P tetrol (Carcinogenesis 17, 829-837, 1996). Molecular mechanics, dynamical simulations, and semiempirical calculations of electronic transitions are used to interpret the low-temperature fluorescence spectra and 1H NMR data. Molecular dynamics simulations (in vacuo) identified two conformers (I and II) for each of the tetrol isomers; in all conformations the aromatic ring system is severely distorted. Fluorescence line-narrowing (FLN) spectroscopy identified two distinct conformational species for the trans-anti isomer, one occurring in ethanol and the other occurring in a glycerol/water matrix. The corresponding structures are assigned based on the S1<--S0 transition energies calculated for conformers I and II, respectively. 1H NMR spectroscopy confirmed the structure of conformer I at room temperature. In contrast to trans-syn-DB[a,l]P tetrol (where the major conformation was identified as a boat structure), both conformations of trans-anti-DB[a,l]P tetrol feature a half-chair structure for the cyclohexenyl ring with different orientations of the hydroxyl groups. For cis-anti- and cis-syn-DB[a,l]P tetrols, only a single conformer is detected by FLN spectroscopy. The NMR results for the latter appear to be most consistent with a mixture of two half-chair conformers I and II, while for the cis-anti isomer a flattened, boatlike conformation was observed. The generally good agreement between the NMR coupling constants and those estimated theoretically indicates that these structures should serve as good starting points for spectroscopic or computational studies of DNA adducts derived from DB[a,l]P diol epoxides. JF - Chemical research in toxicology AU - Jankowiak, R AU - Ariese, F AU - Zamzow, D AU - Luch, A AU - Kroth, H AU - Seidel, A AU - Small, G J AD - Ames Laboratory-USDOE, Iowa 50011, USA. jankowiak@ameslab.gov Y1 - 1997/06// PY - 1997 DA - June 1997 SP - 677 EP - 686 VL - 10 IS - 6 SN - 0893-228X, 0893-228X KW - Benzopyrenes KW - 0 KW - Carcinogens KW - Dihydroxydihydrobenzopyrenes KW - Epoxy Compounds KW - 11,12-dihydroxy-13,14-epoxy-11,12,13,14-tetrahydrodibenzo(a,l)pyrene KW - 153857-28-4 KW - dibenzo(a,l)pyrene KW - G3X629VE4A KW - Index Medicus KW - Stereoisomerism KW - Spectrometry, Fluorescence KW - Models, Molecular KW - Epoxy Compounds -- chemistry KW - Electrochemistry KW - Magnetic Resonance Spectroscopy KW - Benzopyrenes -- chemistry KW - Carcinogens -- chemistry KW - Dihydroxydihydrobenzopyrenes -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/79098008?accountid=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=Chemical+research+in+toxicology&rft.atitle=Conformational+studies+of+stereoisomeric+tetrols+derived+from+syn-+and+anti-dibenzo%5Ba%2Cl%5Dpyrene+diol+epoxides.&rft.au=Jankowiak%2C+R%3BAriese%2C+F%3BZamzow%2C+D%3BLuch%2C+A%3BKroth%2C+H%3BSeidel%2C+A%3BSmall%2C+G+J&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1997-06-01&rft.volume=10&rft.issue=6&rft.spage=677&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1997-08-19 N1 - Date created - 1997-08-19 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - THES T1 - Groundwater hydrology study of the Ames chemical disposal site AN - 52632065; 1998-003362 AB - The Ames Laboratory Chemical Disposal Site is located in northwestern Ames, Iowa west of Squaw Creek. From 1957 to 1966, Ames Laboratory conducted research to develop processes to separate uranium and thorium from nuclear power fuel and to separate yttrium from neutron shielding sources. The wastes from these processes, which contained both hazardous and radiological components, were placed into nine burial pits. Metal drums, plywood boxes, and steel pails were used to store the wastes. Uranium was also burned on the ground surface of the site. Monitoring wells were placed around the waste burial pits. Groundwater testing in 1993 revealed elevated levels of Uranium 234, Uranium 238, beta and alpha radiation. The north side of the burial pit had elevated levels of volatile organic compounds. Samples in the East Ravine showed no volatile organics; however, they did contain elevated levels of radionuclides. These analytical results seem to indicate that the groundwater from the burial pit is flowing down hill and causing contamination in the East Ravine. Although there are many avenues for the contamination to spread, the focus of this project is to understand the hydrogeology of the East Ravine and to determine the path of groundwater flow down the East Ravine. The groundwater flow data along with other existing information will be used to assess the threat of chemical migration down the East Ravine and eventually off-site. The primary objectives of the project were as follows: define the geology of the East Ravine; conduct slug tests to determine the hydraulic conductivity of both oxidized and unoxidized till; develop a three-dimensional mathematical model using ModIME and MODFLOW to simulate groundwater flow in the East Ravine. JF - Groundwater hydrology study of the Ames chemical disposal site AU - Stickel, T SP - 128 KW - wells KW - United States KW - hazardous waste KW - aquifer vulnerability KW - Story County Iowa KW - site exploration KW - data KW - chemical waste KW - fluid dynamics KW - Iowa KW - remediation KW - radioactive waste KW - ground water KW - soils KW - monitoring KW - three-dimensional models KW - pollutants KW - pollution KW - aquifers KW - models KW - industrial waste KW - hydraulic conductivity KW - waste disposal KW - water wells KW - Ames Iowa KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52632065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft.genre=dissertations+%26+theses&rft.jtitle=&rft.atitle=&rft.au=Stickel%2C+T&rft.aulast=Stickel&rft.aufirst=T&rft.date=1996-05-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Groundwater+hydrology+study+of+the+Ames+chemical+disposal+site&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1998-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE96012098NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Ames Iowa; aquifer vulnerability; aquifers; chemical waste; data; fluid dynamics; ground water; hazardous waste; hydraulic conductivity; industrial waste; Iowa; models; monitoring; pollutants; pollution; radioactive waste; remediation; site exploration; soils; Story County Iowa; three-dimensional models; United States; waste disposal; water wells; wells M3 - Master's ER - TY - JOUR T1 - Conformational studies of depurinating DNA adducts from syn-dibenzo[a,l]pyrene diolepoxide. AN - 78004690; 8625498 AB - One of the major DNA adducts from the extremely potent aromatic carcinogen dibenzo[a,l]pyrene (DB[a,l]P) is the depurinating adduct syn-DB[a,l]P diolepoxide-14-N7Ade. Low-temperature fluorescence spectra of this adduct (and related derivaties bound to N3-adenine and N7-guanine) showed two distinct (0,0) origin bands with different excited-state vibrational frequencies, as measured by means of fluorescence line narrowing spectroscopy. The relative intensity of the two origin bands was solvent dependent. The hypothesis that this phenomenon could be due to a conformational equilibrium was tested using molecular mechanics, dynamical simulations and semi-empirical quantum-mechanical calculations. The hydrolyzed metabolite DB[a,l]P tetraol was also studied for comparison. It was found that the syn-DB[a,l]P diolepoxide-14-N7Ade adduct is formed via trans addition to the epoxide. Exploration of the conformational space indeed produced two potential energy minima; both corresponding to structures in which the aromatic ring system is severely distorted. In conformation I the proximity of the distal ring forces the adenine base into a pseudo-axial position and the cyclohexenyl ring adopts a half-boat structure. In conformation II the distal ring is bent in the opposite direction, allowing the cyclohexenyl ring to adopt a half-chair structure with the base in a pseudo-equatorial position, partially stacked over the distal ring. THe difference in (0,0) transition energy calculated for the two conformers agrees very well with the spectroscopic data, and the relative orientations of the hydrogens bound to the cyclohexenyl ring in the major (half-boat) conformation I are in full agreement with the experimentally observed proton NMR coupling constants. JF - Carcinogenesis AU - Ariese, F AU - Small, G J AU - Jankowiak, R AD - Ames Laboratory-USDOE, IA 50011, USA. Y1 - 1996/04// PY - 1996 DA - April 1996 SP - 829 EP - 837 VL - 17 IS - 4 SN - 0143-3334, 0143-3334 KW - 14-(N(7)-guanyl)-11,12,13,14-tetrahydro-11,12,13-trihydroxydibenzo(a,l)pyrene KW - 0 KW - Benzopyrenes KW - Carcinogens KW - DNA Adducts KW - N(3)-(11,12,13,14-tetrahydro-11,12,13-trihydroxydibenzo(a,l)pyren-14-yl)adenine KW - N(7)-(11,12,13,14-tetrahydro-11,12,13-trihydroxydibenzo(a,l)pyren-14-yl)adenine KW - Guanine KW - 5Z93L87A1R KW - Adenine KW - JAC85A2161 KW - Index Medicus KW - Electrons KW - Spectrometry, Fluorescence KW - Models, Molecular KW - Molecular Conformation KW - Guanine -- toxicity KW - DNA Adducts -- chemistry KW - Adenine -- toxicity KW - Carcinogens -- toxicity KW - Benzopyrenes -- toxicity KW - Guanine -- analogs & derivatives KW - Adenine -- analogs & derivatives UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/78004690?accountid=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=Carcinogenesis&rft.atitle=Conformational+studies+of+depurinating+DNA+adducts+from+syn-dibenzo%5Ba%2Cl%5Dpyrene+diolepoxide.&rft.au=Ariese%2C+F%3BSmall%2C+G+J%3BJankowiak%2C+R&rft.aulast=Ariese&rft.aufirst=F&rft.date=1996-04-01&rft.volume=17&rft.issue=4&rft.spage=829&rft.isbn=&rft.btitle=&rft.title=Carcinogenesis&rft.issn=01433334&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1996-06-24 N1 - Date created - 1996-06-24 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - RPRT T1 - Ames expedited site characterization demonstration at the former manufactured gas plant site, Marshalltown, Iowa AN - 52287025; 2001-001110 AB - The goal of the Ames Expedited Site Characterization (ESC) project is to evaluate and promote both innovative technologies (IT) and state-of-the-practice technologies (SOPT) for site characterization and monitoring. In April and May 1994, the ESC project conducted site characterization, technology comparison, and stakeholder demonstration activities at a former manufactured gas plant (FMGP) owned by Iowa Electric Services (IES) Utilities, Inc., in Marshalltown, Iowa. Three areas of technology were fielded at the Marshalltown FMGP site: geophysical, analytical and data integration. The geophysical technologies are designed to assess the subsurface geological conditions so that the location, fate and transport of the target contaminants may be assessed and forecasted. The analytical technologies/methods are designed to detect and quantify the target contaminants. The data integration technology area consists of hardware and software systems designed to integrate all the site information compiled and collected into a conceptual site model on a daily basis at the site; this conceptual model then becomes the decision-support tool. Simultaneous fielding of different methods within each of the three areas of technology provided data for direct comparison of the technologies fielded, both SOPT and IT. This document reports the results of the site characterization, technology comparison, and ESC demonstration activities associated with the Marshalltown FMGP site. JF - Ames expedited site characterization demonstration at the former manufactured gas plant site, Marshalltown, Iowa AU - Bevolo, A J AU - Kjartanson, B H AU - Wonder, J D Y1 - 1996/03// PY - 1996 DA - March 1996 SP - 392 VL - IS-5121 KW - United States KW - soils KW - monitoring KW - Marshall County Iowa KW - contaminant plumes KW - site exploration KW - pollution KW - techniques KW - power plants KW - chemical waste KW - Iowa KW - remediation KW - Marshalltown Iowa KW - waste management KW - sedimentary rocks KW - decontamination KW - coal KW - industrial waste KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52287025?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Bevolo%2C+A+J%3BKjartanson%2C+B+H%3BWonder%2C+J+D&rft.aulast=Bevolo&rft.aufirst=A&rft.date=1996-03-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Ames+expedited+site+characterization+demonstration+at+the+former+manufactured+gas+plant+site%2C+Marshalltown%2C+Iowa&rft.title=Ames+expedited+site+characterization+demonstration+at+the+former+manufactured+gas+plant+site%2C+Marshalltown%2C+Iowa&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 2001-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE96011254NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - JOUR T1 - On the nature of the biocompatibility and on medical applications of NiTi shape memory and superelastic alloys. AN - 78643631; 8980835 AB - Nitinol based shape memory alloys were introduced to Medicine in the late seventies. They possess a unique combination of properties including shape memory, superelasticity, great workability in the martensitic state, resistance to fatigue and corrosion. Despite these exceptional physical, chemical and mechanical properties the worldwide medical application has been hindered for a long time because of the lack of knowledge on the nature of the biocompatibility of these enriched by nickel alloys. A review of biocompatibility with an emphasis on the most recent studies, combined with the results of X-ray surface investigations, allows us to draw conclusions on the origin of the good biological response observed in vivo. The tendency of Nitinol surfaces to be covered with TiO2 oxides with only a minor amount of nickel under normal conditions is considered to be responsible for these positive results. A certain toxicity, usually observed in in vitro studies, may result from the much higher in vitro Ni concentrations which are probably not possible to achieve in vivo. The essentiality of Ni as a trace element may also contribute to the Nitinol biocompatibility with the human body tissues. Examples of successful medical applications of Nitinol utilizing shape memory and superelasticity are presented. JF - Bio-medical materials and engineering AU - Shabalovskaya, S A AD - Ames Laboratory, Department of Energy, Iowa 50011, USA. shabalov@ameslab.gov Y1 - 1996 PY - 1996 DA - 1996 SP - 267 EP - 289 VL - 6 IS - 4 SN - 0959-2989, 0959-2989 KW - Alloys KW - 0 KW - Biocompatible Materials KW - Dental Implants KW - titanium nickelide KW - 12035-60-8 KW - Nickel KW - 7OV03QG267 KW - Titanium KW - D1JT611TNE KW - Index Medicus KW - Orthopedic Equipment KW - Animals KW - Stress, Mechanical KW - Humans KW - Bone and Bones -- surgery KW - Corrosion KW - Materials Testing KW - Elasticity KW - Surface Properties KW - Prostheses and Implants KW - Titanium -- toxicity KW - Surgical Equipment KW - Nickel -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/78643631?accountid=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=Bio-medical+materials+and+engineering&rft.atitle=On+the+nature+of+the+biocompatibility+and+on+medical+applications+of+NiTi+shape+memory+and+superelastic+alloys.&rft.au=Shabalovskaya%2C+S+A&rft.aulast=Shabalovskaya&rft.aufirst=S&rft.date=1996-01-01&rft.volume=6&rft.issue=4&rft.spage=267&rft.isbn=&rft.btitle=&rft.title=Bio-medical+materials+and+engineering&rft.issn=09592989&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1997-03-11 N1 - Date created - 1997-03-11 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - The use of direct push technologies in expedited site characterization AN - 51159990; 2003-080065 JF - Geotechnical Special Publication AU - Stenback, Greg A AU - Kjartanson, Bruce H AU - Bevolo, A AU - Wonder, D A2 - Shackelford, Charles D. A2 - Nelson, Priscilla P. A2 - Roth, Mary J. S. Y1 - 1996 PY - 1996 DA - 1996 SP - 180 EP - 194 PB - American Society of Civil Engineers, New York, NY VL - 58 SN - 0895-0563, 0895-0563 KW - wells KW - electrical conductivity KW - laser methods KW - site exploration KW - well-logging KW - kriging KW - observation wells KW - dense nonaqueous phase liquids KW - fluorescence KW - uncertainty KW - soils KW - electrical logging KW - pollutants KW - variance analysis KW - statistical analysis KW - pollution KW - petroleum products KW - semivariograms KW - nonaqueous phase liquids KW - organic compounds KW - SCAPS KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - aromatic hydrocarbons KW - 20:Applied geophysics KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51159990?accountid=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=Geotechnical+Special+Publication&rft.atitle=The+use+of+direct+push+technologies+in+expedited+site+characterization&rft.au=Stenback%2C+Greg+A%3BKjartanson%2C+Bruce+H%3BBevolo%2C+A%3BWonder%2C+D&rft.aulast=Stenback&rft.aufirst=Greg&rft.date=1996-01-01&rft.volume=58&rft.issue=&rft.spage=180&rft.isbn=0784401888&rft.btitle=&rft.title=Geotechnical+Special+Publication&rft.issn=08950563&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Uncertainty '96 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 6 N1 - PubXState - NY N1 - Document feature - illus. incl. sect., 1 table, sketch maps N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aromatic hydrocarbons; dense nonaqueous phase liquids; electrical conductivity; electrical logging; fluorescence; hydrocarbons; kriging; laser methods; nonaqueous phase liquids; observation wells; organic compounds; petroleum products; pollutants; pollution; polycyclic aromatic hydrocarbons; SCAPS; semivariograms; site exploration; soils; statistical analysis; uncertainty; variance analysis; well-logging; wells ER - TY - JOUR T1 - Conformational studies of the (+)-trans, (-)-trans, (+)-cis, and (-)-cis adducts of anti-benzo[a]pyrene diolepoxide to N2-dG in duplex oligonucleotides using polyacrylamide gel electrophoresis and low-temperature fluorescence spectroscopy. AN - 77621682; 7578905 AB - Using polyacrylamide gel electrophoresis (PAGE) and low-temperature, laser-induced fluorescence line narrowing (FLN) and non-line narrowing (NLN) spectroscopic methods, the conformational characteristics of stereochemically defined and site-specific adducts derived from the binding of 7 beta,8 alpha-dihydroxy-9 alpha,10 alpha-epoxy-7,8,9,10- tetrahydrobenzo[a]pyrene (anti-BPDE, a metabolite of the environmental carcinogen benzo[a]pyrene), to DNA were studied. The focus of these studies was on the four stereochemically distinct anti-BPDE modified duplexes 5'-d(CCATCGCTACC).(GGTAGCGATGG), where G denotes the lesion site derived from trans or cis addition of the exocyclic amino group of guanine to the C10 position of either (+) or (-)-anti-BPDE. PAGE experiments under non-denaturing conditions showed that the (+)-trans adduct causes a significantly greater retardation in the electrophoretic mobility than the other three adducts, probably the result of important adduct-induced distortions of the duplex structure. Low-temperature fluorescence studies in frozen aqueous buffer matrices showed that the (+)-trans adduct adopts primarily an external conformation with only minor interactions with the helix, but a smaller fraction (approximately 25%) appears to exists in a partially base-stacked conformation. The (-)-trans adduct exists almost exclusively (approximately 97%) in an external conformation. Both cis adducts were found to be intercalated; strong electron-phonon coupling observed in their FLN spectra provided additional evidence for significant pi-pi stacking interactions between the pyrenyl residues and the bases. FLN spectroscopy is shown to be suitable for distinguishing between trans and cis adducts, but lesions with either (+)- or (-)-trans, or (+)- or (-)-cis stereochemical characteristics showed very similar vibrational patterns.(ABSTRACT TRUNCATED AT 250 WORDS) JF - Biophysical chemistry AU - Suh, M AU - Ariese, F AU - Small, G J AU - Jankowiak, R AU - Liu, T M AU - Geacintov, N E AD - Ames Laboratory-USDOE, IA 50011, USA. Y1 - 1995/11// PY - 1995 DA - November 1995 SP - 281 EP - 296 VL - 56 IS - 3 SN - 0301-4622, 0301-4622 KW - Benzopyrenes KW - 0 KW - DNA Adducts KW - Oligonucleotides KW - benzo(a)pyrene-DNA adduct KW - Benzo(a)pyrene KW - 3417WMA06D KW - benzo(a)pyrene diolepoxide I KW - 60268-85-1 KW - Index Medicus KW - Molecular Structure KW - Stereoisomerism KW - Base Sequence KW - Spectrometry, Fluorescence KW - Oligonucleotides -- chemistry KW - Chemistry, Physical KW - Chemical Phenomena KW - Temperature KW - Molecular Sequence Data KW - Molecular Conformation KW - Biophysical Phenomena KW - Biophysics KW - Benzopyrenes -- chemistry KW - DNA Adducts -- chemistry KW - Benzo(a)pyrene -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77621682?accountid=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=Biophysical+chemistry&rft.atitle=Conformational+studies+of+the+%28%2B%29-trans%2C+%28-%29-trans%2C+%28%2B%29-cis%2C+and+%28-%29-cis+adducts+of+anti-benzo%5Ba%5Dpyrene+diolepoxide+to+N2-dG+in+duplex+oligonucleotides+using+polyacrylamide+gel+electrophoresis+and+low-temperature+fluorescence+spectroscopy.&rft.au=Suh%2C+M%3BAriese%2C+F%3BSmall%2C+G+J%3BJankowiak%2C+R%3BLiu%2C+T+M%3BGeacintov%2C+N+E&rft.aulast=Suh&rft.aufirst=M&rft.date=1995-11-01&rft.volume=56&rft.issue=3&rft.spage=281&rft.isbn=&rft.btitle=&rft.title=Biophysical+chemistry&rft.issn=03014622&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1995-12-15 N1 - Date created - 1995-12-15 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Formation and persistence of benzo[a]pyrene-DNA adducts in mouse epidermis in vivo: importance of adduct conformation. AN - 77584322; 7586167 AB - The formation and repair of benzo[a]pyrene diol epoxide-N2-deoxyguanosine adducts (BPDE-N2-dG) in DNA isolated from the skin of mice treated topically with benzo[a]pyrene (BP) was studied by 32P-postlabeling and by low-temperature fluorescence spectroscopy under low resolution and under high resolution fluorescence line narrowing (FLN) conditions. In agreement with earlier studies, total BP-DNA binding reached a maximum at 24 h after treatment (dose: 1 mumol/mouse), then declined rapidly until 4 days after treatment and much more slowly thereafter. An HPLC method was developed which resolved the 32P-postlabeled (-)-trans- from (-)-cis-anti-BPDE-N2-dG, and (+)-trans-from (+)-cis-anti-BPDE-N2-dG. High performance liquid chromatography analysis of the major TLC adduct spot (containing > 80% of the total adducts) obtained by postlabeling BP-modified mouse skin DNA showed that it consisted of a major component that coeluted with (-)-cis-/(+)-trans-anti-BPDE-N2-dG and a minor component that coeluted with (-)-trans-/(+)-cis-anti-BPDE-N2-dG and that the minor component was repaired at a slower rate than the major component. Low-temperature fluorescence spectroscopy of the intact DNA identified the major adduct as (+)-trans-anti-BPDE-N2-dG and the minor adduct fraction consisted mainly of (+)-cis-anti-BPDE-N2-dG. In agreement with the 32P-postlabeling results it was observed by fluorescence spectroscopy that the (+)-cis-adducts were repaired more slowly than most other adducts. Moreover, the (+)-trans-adducts exhibited a broad distribution of base-stacked, partially base-stacked and helix-external conformations. Mouse skin DNA samples obtained at early timepoints (2-8 h) after treatment with BP contained substantially more of the 'external' adducts, while samples at later timepoints (24-48 h) contained relatively more adducts in the base-stacked conformation, indicating also that the latter adducts are repaired less readily than the former. The possible biological significance of these novel observations of conformation-dependent rates of DNA adduct repair and their possible dependence on DNA sequence, are discussed. JF - Carcinogenesis AU - Suh, M AU - Ariese, F AU - Small, G J AU - Jankowiak, R AU - Hewer, A AU - Phillips, D H AD - Ames Laboratory-USDOE, Iowa State University 50011, USA. Y1 - 1995/10// PY - 1995 DA - October 1995 SP - 2561 EP - 2569 VL - 16 IS - 10 SN - 0143-3334, 0143-3334 KW - Carcinogens KW - 0 KW - DNA Adducts KW - Oligodeoxyribonucleotides KW - Phosphorus Radioisotopes KW - benzo(a)pyrene-DNA adduct KW - Benzo(a)pyrene KW - 3417WMA06D KW - Index Medicus KW - Animals KW - Spectrometry, Fluorescence KW - Mice KW - Autoradiography KW - Chromatography, High Pressure Liquid KW - Binding Sites KW - Mice, Inbred Strains KW - Base Sequence KW - Biotransformation KW - Kinetics KW - Molecular Sequence Data KW - Chromatography, Thin Layer KW - Time Factors KW - Male KW - DNA Adducts -- isolation & purification KW - Carcinogens -- metabolism KW - DNA Adducts -- chemistry KW - Skin -- metabolism KW - Epidermis -- metabolism KW - Benzo(a)pyrene -- isolation & purification KW - Benzo(a)pyrene -- chemistry KW - DNA Adducts -- metabolism KW - Benzo(a)pyrene -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/77584322?accountid=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=Carcinogenesis&rft.atitle=Formation+and+persistence+of+benzo%5Ba%5Dpyrene-DNA+adducts+in+mouse+epidermis+in+vivo%3A+importance+of+adduct+conformation.&rft.au=Suh%2C+M%3BAriese%2C+F%3BSmall%2C+G+J%3BJankowiak%2C+R%3BHewer%2C+A%3BPhillips%2C+D+H&rft.aulast=Suh&rft.aufirst=M&rft.date=1995-10-01&rft.volume=16&rft.issue=10&rft.spage=2561&rft.isbn=&rft.btitle=&rft.title=Carcinogenesis&rft.issn=01433334&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1995-11-28 N1 - Date created - 1995-11-28 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Structural and metamorphic evolution of the Orocopia Schist and related rocks, Southern California; evidence for late movement on the Orocopia Fault AN - 50173396; 1996-018636 AB - The Pelona, Orocopia, and Rand Schists (POR schists) of southern California and southwesternmost Arizona are late Mesozoic or early Tertiary subduction complexes that underlie Precambrian to Mesozoic continental basement along the low-angle Vincent-Chocolate Mountains (VCM) fault system. The VCM faults are often considered to be remnants of the original subduction zone, but recent work indicates that many have undergone substantial postsubduction reactivation. In the Orocopia Mountains, for example, the Orocopia Schist exhibits an exceptionally complex structural and metamorphic history due to multiple periods of movement along the Orocopia fault. Structures in the schist include isoclinal folds with axial-planar schistosity, open-to-tight folds that fold schistosity, penetrative stretching lineations, and crenulation lineations, all of which show a nearly 360 degrees range in trend. Folds and lineations that trend approximately NE-SW occur throughout the schist and are thought to be part of an early phase of deformation related to subduction. Folds of this orientation show no consistent vergence. Folds and lineations that trend approximately NW-SE are concentrated near the Orocopia fault and are interpreted to have formed during exhumation of the schist. The NW-SE trending folds, and shear indicators in late-stage mylonite at the top of the schist, consistently verge NE. The exhumation event culminated in emplacement of the schist against brittlely deformed upper plate. Exhumation of the Orocopia Schist was accompanied by retrograde replacement of garnet, biotite, epidote, and calcic amphibole by chlorite, calcite, and sericite. Matrix amphibole has a lower Na/Al ratio than amphibole inclusions in albite, consistent with a late-stage decrease in pressure. As NE vergence in the Orocopia Mountains is associated with exhumation of the schist, the NE movement along other segments of the VCM fault may also be late and therefore have no bearing on the facing direction of the VCM subduction zone, contrary to past interpretations. Copyright 1995 by the American Geophysical Union. JF - Tectonics AU - Jacobson, Carl E AU - Dawson, M Robert Y1 - 1995/08// PY - 1995 DA - August 1995 SP - 933 EP - 944 PB - American Geophysical Union, Washington, DC VL - 14 IS - 4 SN - 0278-7407, 0278-7407 KW - United States KW - Orocopia Schist KW - southwestern Arizona KW - California KW - style KW - Orocopia Fault KW - folds KW - metamorphic rocks KW - exhumation KW - faults KW - lineation KW - orientation KW - Chocolate Mountains KW - schists KW - structural analysis KW - subduction KW - deformation KW - reactivation KW - metamorphism KW - Mesozoic KW - evolution KW - plate tectonics KW - Southern California KW - Arizona KW - petrography KW - foliation KW - schistosity KW - 16:Structural geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50173396?accountid=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=Tectonics&rft.atitle=Structural+and+metamorphic+evolution+of+the+Orocopia+Schist+and+related+rocks%2C+Southern+California%3B+evidence+for+late+movement+on+the+Orocopia+Fault&rft.au=Jacobson%2C+Carl+E%3BDawson%2C+M+Robert&rft.aulast=Jacobson&rft.aufirst=Carl&rft.date=1995-08-01&rft.volume=14&rft.issue=4&rft.spage=933&rft.isbn=&rft.btitle=&rft.title=Tectonics&rft.issn=02787407&rft_id=info:doi/10.1029%2F95TC01446 L2 - http://www.agu.org/journals/tc/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1996-01-01 N1 - Number of references - 54 N1 - PubXState - DC N1 - Document feature - illus. incl. sect., 2 plates, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - TCTNDM N1 - SubjectsTermNotLitGenreText - Arizona; California; Chocolate Mountains; deformation; evolution; exhumation; faults; folds; foliation; lineation; Mesozoic; metamorphic rocks; metamorphism; orientation; Orocopia Fault; Orocopia Schist; petrography; plate tectonics; reactivation; schistosity; schists; Southern California; southwestern Arizona; structural analysis; style; subduction; United States DO - http://dx.doi.org/10.1029/95TC01446 ER - TY - RPRT T1 - Zero-tension lysimeters; an improved design to monitor colloid-facilitated contaminant transport in the vadose zone AN - 52770929; 1997-001466 AB - There is increasing evidence that mobile colloids facilitate the long-distance transport of contaminants. The mobility of fine particles and macromolecules has been linked to the movement of actinides, organic contaminants, and heavy metals through soil. Direct evidence for colloid mobility includes the presence of humic materials in deep aquifers as well as coatings of accumulated clay, organic matter, or sesquioxides on particle or aggregate surfaces in subsoil horizons of many soils. The potential for colloid-facilitated transport of contaminants from hazardous-waste sites requires adequate monitoring before, during, and after in-situ remediation treatments. Zero-tension lysimeters (ZTLs) are especially appropriate for sampling water as it moves through saturated soil, although some unsaturated flow events may be sampled as well. Because no ceramic barrier or fiberglass wick is involved to maintain tension on the water (as is the case with other lysimeters), particles suspended in the water as well as dissolved species may be sampled with ZTLs. In this report, a ZTL design is proposed that is more suitable for monitoring colloid-facilitated contaminant migration. The improved design consists of a cylinder made of polycarbonate or polytetrafluoroethylene (PTFE) that is placed below undisturbed soil material. In many soils, a hydraulically powered tube may be used to extract an undisturbed core of soil before placement of the lysimeter. In those cases, the design has significant advantages over conventional designs with respect to simplicity and speed of installation. Therefore, it will allow colloid-facilitated transport of contaminants to be monitored at more locations at a given site. JF - Zero-tension lysimeters; an improved design to monitor colloid-facilitated contaminant transport in the vadose zone AU - Thompson, M L AU - Scharf, R L AU - Shang, C Y1 - 1995/04// PY - 1995 DA - April 1995 SP - 46 VL - IS-5117 KW - solute transport KW - soils KW - hazardous waste KW - colloidal materials KW - monitoring KW - pollutants KW - unsaturated zone KW - pollution KW - measurement KW - organic compounds KW - detection KW - transport KW - mobility KW - lysimeters KW - heavy metals KW - design KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52770929?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Thompson%2C+M+L%3BScharf%2C+R+L%3BShang%2C+C&rft.aulast=Thompson&rft.aufirst=M&rft.date=1995-04-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Zero-tension+lysimeters%3B+an+improved+design+to+monitor+colloid-facilitated+contaminant+transport+in+the+vadose+zone&rft.title=Zero-tension+lysimeters%3B+an+improved+design+to+monitor+colloid-facilitated+contaminant+transport+in+the+vadose+zone&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1997-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE96000214NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - RPRT T1 - Ames Laboratory Site environmental report, calendar year 1993 AN - 52652787; 1998-002939 AB - Ames Laboratory is responsible for a small chemical burial site. The site was used from 1958 through 1966 for the disposal of waste chemicals and metal slags. The remedial investigation (RI) of the site shows no evidence of migration of the buried materials into the Ames aquifer or nearby Squaw Creek, nor any evidence of adverse effects to vegetation in the area. The RI included evaluation of surface soil samples, deep soil sample corings near the burial pits, soil sample corings at various other points within the site area, groundwater samples from monitoring wells and water samples from adjacent ravines and Squaw Creek. Ames Laboratory anticipates that the buried materials will be removed and shipped to a disposal facility in the summer of 1994. Ames Laboratory is responsible for an area contaminated by diesel fuel that leaked from an underground storage tank (UST) in 1970. Soil borings and groundwater samples collected between November 1993 and May 1994 indicate that the soil contamination is confined to a small plume in a layer 7-15 feet below the surface and extending under the Computer Services Building. Ames Laboratory is planning to remove the contaminated soil after tearing down the computer building in the summer of 1994. Ames Laboratory investigated nine small areas of concern around Ames. Some of these areas were locations of research or waste storage during the 1940s and 1950s. The others are areas where sludge containing small amounts of thorium progeny (radium, actinium, etc.) may have been used as fertilizer. An independent contractor collected samples in July 1993 and analyzed them to confirm that the sites are not contaminated. JF - Ames Laboratory Site environmental report, calendar year 1993 Y1 - 1995 PY - 1995 DA - 1995 SP - 59 VL - IS-5108 KW - United States KW - soils KW - leaking underground storage tanks KW - plumes KW - site exploration KW - sludge KW - landfills KW - pollution KW - chemical waste KW - Iowa KW - remediation KW - ground water KW - progress report KW - oil spills KW - report KW - industrial waste KW - Ames Laboratory KW - risk assessment KW - waste disposal KW - sanitary landfills KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52652787?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1995-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Ames+Laboratory+Site+environmental+report%2C+calendar+year+1993&rft.title=Ames+Laboratory+Site+environmental+report%2C+calendar+year+1993&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1998-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE95010240NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - JOUR T1 - Flanking base effects on the structural conformation of the (+)-trans-anti-benzo[a]pyrene diolepoxide adduct to N2-dG in sequence-defined oligonucleotides. AN - 76898109; 8001252 AB - Conformations of the trans adduct of (+)-anti-benzo[a]pyrene -7,8-dihydrodiol-9,10-epoxide (BPDE) to N2-guanine, the major stable DNA adduct of the environmental carcinogen benzo[a]pyrene, were studied as a function of flanking bases in single-stranded and in double-stranded oligonucleotides. Three 11mer oligonucleotides d(CTAT-G1G2G3TATC) were synthesized containing the (+)-trans-anti-BPDE adduct at one specific guanine of the GGG sequence (a known mutational hot spot). Polyacrylamide gel electrophoresis of the three single-stranded oligonucleotides showed that the adduct bound to G2 or G3 (5'-flanking base guanine) caused significantly stronger retardation than the same adduct bound to G1 (5'-flanking base thymine). The strength of the carcinogen-base interaction was reflected in the spectroscopic properties of the pyrenyl moiety. Low temperature fluorescence measurements under line-narrowing (FLN) or non-line-narrowing (NLN) conditions showed that in single-stranded form the adduct at G2 or G3 (5'-flanking base guanine) adopts a conformation with strong interaction with the bases. This was also observed for the same adduct at the sequence AGA. In contrast, the (+)-trans-anti-BPDE adduct with a 5'-flanking thymine exists in a primarily helix-external conformation. Similar differences were observed in the double-stranded oligonucleotides: the adducts at G2 and G3 were found to exist in similar conformational equilibria, again with significant carcinogen-base interactions, while the adduct at G1 showed a predominantly external conformation. The nature of the 3'-flanking base appeared to have little influence on the conformational equilibrium of the (+)-trans-anti-BPDE-guanine adduct. The results could provide insight into the mutational specificity and flanking base effects observed for (+)-anti-BPDE. JF - Carcinogenesis AU - Suh, M AU - Jankowiak, R AU - Ariese, F AU - Mao, B AU - Geacintov, N E AU - Small, G J AD - Ames Laboratory-USDOE, IA. Y1 - 1994/12// PY - 1994 DA - December 1994 SP - 2891 EP - 2898 VL - 15 IS - 12 SN - 0143-3334, 0143-3334 KW - Benzopyrenes KW - 0 KW - DNA Adducts KW - Oligonucleotides KW - benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide-DNA KW - Benzo(a)pyrene KW - 3417WMA06D KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - Guanine KW - 5Z93L87A1R KW - 7-(7,8,9-trihydroxy-7,8,9,10-tetrahydrobenzo(a)-pyren-10-yl)guanine KW - 66421-14-5 KW - Index Medicus KW - Molecular Structure KW - Base Sequence KW - Electrophoresis, Polyacrylamide Gel KW - DNA Damage KW - Molecular Sequence Data KW - Cold Temperature KW - Molecular Conformation KW - Nucleic Acid Conformation KW - Mutation KW - Benzopyrenes -- chemistry KW - Benzo(a)pyrene -- pharmacology KW - Oligonucleotides -- chemistry KW - Guanine -- chemistry KW - DNA Adducts -- chemistry KW - Guanine -- analogs & derivatives KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/76898109?accountid=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=Carcinogenesis&rft.atitle=Flanking+base+effects+on+the+structural+conformation+of+the+%28%2B%29-trans-anti-benzo%5Ba%5Dpyrene+diolepoxide+adduct+to+N2-dG+in+sequence-defined+oligonucleotides.&rft.au=Suh%2C+M%3BJankowiak%2C+R%3BAriese%2C+F%3BMao%2C+B%3BGeacintov%2C+N+E%3BSmall%2C+G+J&rft.aulast=Suh&rft.aufirst=M&rft.date=1994-12-01&rft.volume=15&rft.issue=12&rft.spage=2891&rft.isbn=&rft.btitle=&rft.title=Carcinogenesis&rft.issn=01433334&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1995-01-26 N1 - Date created - 1995-01-26 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - RPRT T1 - Integrated design for marketing and manufacturing team; an examination of LA-ICP-AES in a mobile configuration; final report AN - 52526286; 1999-000056 AB - The Department of Energy (DOE) has identified the need for field-deployable elemental analysis devices that are safer, faster, and less expensive than the fixed laboratory procedures now used to screen hazardous waste sites. As a response to this need, the Technology Integration Program (TIP) created a mobile, field-deployable laser ablation-inductively coupled plasma-atomic emission spectrometry (LA-ICP-AES) sampling and analysis prototype. Although the elemental. screening prototype has been successfully field-tested, continued marketing and technical development efforts are required to transfer LA-ICP-AES technology to the commercial sector. TIP established and supported a student research and design group called the Integrated Design for Marketing and Manufacturing (IDMM) team to advance the technology transfer of mobile, field-deployable LA-ICP-AES. The IDMM team developed a conceptual design (which is detailed in this report) for a mobile, field-deployable LA-ICP-AES sampling and analysis system, and reports the following findings: Mobile, field-deployable LA-ICP-AES is commercially viable. Eventual regulatory acceptance of field-deployable LA-ICP-AES, while not a simple process, is likely. Further refinement of certain processes and components of LA-ICP-AES will enhance the device's sensitivity and accuracy. JF - Integrated design for marketing and manufacturing team; an examination of LA-ICP-AES in a mobile configuration; final report Y1 - 1994/05// PY - 1994 DA - May 1994 SP - 121 VL - IS-5110 KW - technology KW - inductively coupled plasma methods KW - ablation KW - laser methods KW - isotopes KW - waste disposal sites KW - ground water KW - emission spectra KW - progress report KW - radioactive isotopes KW - sampling KW - quantitative analysis KW - fluorescence KW - report KW - spectra KW - soils KW - chemical analysis KW - research KW - metals KW - testing KW - plasma emission spectroscopy KW - waste disposal KW - spectroscopy KW - instruments KW - field studies KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52526286?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1994-05-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Integrated+design+for+marketing+and+manufacturing+team%3B+an+examination+of+LA-ICP-AES+in+a+mobile+configuration%3B+final+report&rft.title=Integrated+design+for+marketing+and+manufacturing+team%3B+an+examination+of+LA-ICP-AES+in+a+mobile+configuration%3B+final+report&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1999-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE95001685NEG, Springfield, VA, United States N1 - SuppNotes - Progress report; Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - RPRT T1 - Final work plan; expedited site characterization of the IES Industries, Inc., Site at Marshalltown, Iowa; Ames expedited site characterization project, Version 1.0 AN - 52663599; 1998-002925 AB - The overall goal of the Ames Laboratory Expedited Site Characterization (ESC) project is to evaluate and promote both innovative and state-of-the-practice site characterization and/or monitoring technologies. This will be accomplished by fielding both types of technologies together in the context of an expedited site characterization. The first site will be at a former manufactured gas plant (FMGP) in Marshalltown, Iowa. The project will field three areas of technology: geophysical, analytical, and data fusion. Geophysical technologies are designed to understand the subsurface geology to help predict fate and transport of the target contaminants. Analytical technologies/methods are designed to detect and quantify the target contaminants. Data fusion technology consists of software systems designed to rapidly integrate or fuse all site information into a conceptual site model that then becomes the decision making tool for the site team to plan subsequent sampling activity. Not all of the contaminants present can be located at the action level. Polynuclear aromatic hydrocarbons (PAHs) are the signature organics associated with the coal tar activities that took place at the site. As a result, PAHs were selected as the target compounds. Screening analytical instruments and nonintrusive geophysical techniques will be fielded to qualitatively map the spatial contaminant distribution. Soil gas surveys, immunoassay testing (IMA), innovative optical techniques, and passive organic sorbent sensors will be deployed along with the geophysical methods. Gas chromatography/mass spectrometry (GC/MS) instruments and a cone penetrometer system equipped with a laser-induced fluorescence (LIF) probe will quantitatively map the action level edges of the PAH plume(s). Samples will be taken both by the cone penetrometer test system (CPT) and the Geoprobe (reg sign) sampler system. JF - Final work plan; expedited site characterization of the IES Industries, Inc., Site at Marshalltown, Iowa; Ames expedited site characterization project, Version 1.0 Y1 - 1994/04// PY - 1994 DA - April 1994 SP - 57 VL - IS-5107 KW - United States KW - soils KW - Marshall County Iowa KW - site exploration KW - pollutants KW - gas chromatograms KW - pollution KW - mass spectra KW - chemical waste KW - simulation KW - Iowa KW - ground water KW - Marshalltown Iowa KW - volatiles KW - spatial variations KW - organic compounds KW - detection KW - industrial waste KW - hydrocarbons KW - polycyclic aromatic hydrocarbons KW - spectra KW - aromatic hydrocarbons KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52663599?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1994-04-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Final+work+plan%3B+expedited+site+characterization+of+the+IES+Industries%2C+Inc.%2C+Site+at+Marshalltown%2C+Iowa%3B+Ames+expedited+site+characterization+project%2C+Version+1.0&rft.title=Final+work+plan%3B+expedited+site+characterization+of+the+IES+Industries%2C+Inc.%2C+Site+at+Marshalltown%2C+Iowa%3B+Ames+expedited+site+characterization+project%2C+Version+1.0&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1998-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE94014241NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - RPRT T1 - Laser ablation ICP-mass spectrometry determination of Th (super 230) in soils at the Gunnison, Colorado UMTRA site AN - 52650855; 1998-003761 AB - This report describes an innovative technology, laser ablation-inductively couple plasma-mass spectrometry (LA-ICP-MS), operated in a mobile laboratory, to rapidly detect thorium 230 activity levels in soil samples. This technology was demonstrated on-site during November 1993 at the Gunnison, Colorado, UMTRA project site in support of their remediation effort. The LA-ICP-MS sampling and analysis technique was chosen because of the capability for rapid analysis, approximately three samples per hour, with minimal sample preparation. JF - Laser ablation ICP-mass spectrometry determination of Th (super 230) in soils at the Gunnison, Colorado UMTRA site AU - Anderson, M S AU - Braymen, S AU - McIntosh, R Y1 - 1994/02// PY - 1994 DA - February 1994 SP - 16 VL - IS-5106 KW - United States KW - soils KW - concentration KW - Th-230 KW - laser methods KW - isotopes KW - Uranium Mill Tailings Remedial Action KW - pollution KW - mass spectra KW - Gunnison County Colorado KW - remediation KW - radioactive waste KW - UMTRA KW - radioactive isotopes KW - detection KW - metals KW - thorium KW - spectra KW - waste disposal KW - Colorado KW - tailings KW - geochemistry KW - actinides KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52650855?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Anderson%2C+M+S%3BBraymen%2C+S%3BMcIntosh%2C+R&rft.aulast=Anderson&rft.aufirst=M&rft.date=1994-02-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Laser+ablation+ICP-mass+spectrometry+determination+of+Th+%28super+230%29+in+soils+at+the+Gunnison%2C+Colorado+UMTRA+site&rft.title=Laser+ablation+ICP-mass+spectrometry+determination+of+Th+%28super+230%29+in+soils+at+the+Gunnison%2C+Colorado+UMTRA+site&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1998-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE94011203NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - JOUR T1 - In situ determination of uranium in soil by laser ablation-inductively coupled plasma atomic emission spectrometry AN - 50176655; 1995-018262 JF - Environmental Science & Technology, ES & T AU - Zamzow, Daniel S AU - Baldwin, David P AU - Weeks, Stephan J AU - Bajic, Stanley J AU - D'Silva, Arthur P Y1 - 1994/02// PY - 1994 DA - February 1994 SP - 352 EP - 358 PB - American Chemical Society, Washington, DC VL - 28 IS - 2 SN - 0013-936X, 0013-936X KW - United States KW - soils KW - concentration KW - chemical analysis KW - inductively coupled plasma methods KW - laser methods KW - standardization KW - calibration KW - Iowa KW - samples KW - radioactive waste KW - metals KW - uranium KW - spectroscopy KW - actinides KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50176655?accountid=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=Environmental+Science+%26+Technology%2C+ES+%26+T&rft.atitle=In+situ+determination+of+uranium+in+soil+by+laser+ablation-inductively+coupled+plasma+atomic+emission+spectrometry&rft.au=Zamzow%2C+Daniel+S%3BBaldwin%2C+David+P%3BWeeks%2C+Stephan+J%3BBajic%2C+Stanley+J%3BD%27Silva%2C+Arthur+P&rft.aulast=Zamzow&rft.aufirst=Daniel&rft.date=1994-02-01&rft.volume=28&rft.issue=2&rft.spage=352&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology%2C+ES+%26+T&rft.issn=0013936X&rft_id=info:doi/ L2 - http://pubs.acs.org/journals/esthag/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1995-01-01 N1 - Number of references - 19 N1 - PubXState - DC N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - ESTHAG N1 - SubjectsTermNotLitGenreText - actinides; calibration; chemical analysis; concentration; inductively coupled plasma methods; Iowa; laser methods; metals; radioactive waste; samples; soils; spectroscopy; standardization; United States; uranium ER - TY - JOUR T1 - Sequence dependence of benzo[a]pyrene diol epoxide-DNA adduct conformer distribution: a study by laser-induced fluorescence/polyacrylamide gel electrophoresis. AN - 76433074; 8155833 AB - Low-temperature laser-induced fluorescence techniques in combination with polyacrylamide gel electrophoresis (LIF/PAGE) were used to study the binding of (-)-anti- and (+)-anti-benzo[a]pyrene 7,8-dihydrodiol 9,10-epoxide (anti-BPDE) to several sequence-defined duplex oligomers. Two of the oligomers contain central 5'-RAGGAR-3' sequences (R = purine) which appear to be frequently mutated by racemic (+/-)-anti-BPDE in endogenous genes of cells cultured in vitro. Two contain a central 5'-CCGG-3' or 5'-TGGT-3' sequence which are strongly preferred for covalent binding but appear to be not so frequently mutated. Binding of the two enantiomers to the latter two sequences yielded a distribution of BPDE-N2-dG adduct conformations similar to those from binding to highly polymerized, random sequence DNA in vitro which, for (+/-)-anti-BPDE, means that the helix-external conformation of the N2-dG adduct is dominant. Binding of (-)-anti-BPDE to the 5'-RAGGAR-3' sequences yielded more partially base-stacked and less base-stacked (quasi-intercalated) conformer than observed for random sequence DNA. Importantly, the (+)-anti-BPDE in binding to the more mutagenically inclined 5'-RAGGAR-3' sequences yielded little external-type adduct in comparison to the other two sequences and random sequence DNA. Moreover, an unusually high proportion of the (+)-anti-BPDE adducts formed with the 5'-RAGGAR-3' sequences result from cis stereoaddition, which yields a partially base-stacked configuration. Since the (+)-anti-BPDE appears to be the more mutagenic, this result suggests a possible role of internal adduct conformations in mutagenesis. JF - Chemical research in toxicology AU - Marsch, G A AU - Jankowiak, R AU - Suh, M AU - Small, G J AD - Ames Laboratory--USDOE, Iowa. PY - 1994 SP - 98 EP - 109 VL - 7 IS - 1 SN - 0893-228X, 0893-228X KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Animals KW - Cattle KW - Base Sequence KW - Spectrometry, Fluorescence -- methods KW - Electrophoresis, Polyacrylamide Gel -- methods KW - Molecular Sequence Data KW - Lasers KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- metabolism KW - DNA -- metabolism KW - DNA -- chemistry KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/76433074?accountid=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=Chemical+research+in+toxicology&rft.atitle=Sequence+dependence+of+benzo%5Ba%5Dpyrene+diol+epoxide-DNA+adduct+conformer+distribution%3A+a+study+by+laser-induced+fluorescence%2Fpolyacrylamide+gel+electrophoresis.&rft.au=Marsch%2C+G+A%3BJankowiak%2C+R%3BSuh%2C+M%3BSmall%2C+G+J&rft.aulast=Marsch&rft.aufirst=G&rft.date=1994-01-01&rft.volume=7&rft.issue=1&rft.spage=98&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1994-05-17 N1 - Date created - 1994-05-17 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-22 ER - TY - JOUR T1 - Remote acid gas-phase dissolution for the determination of uranium in soil matrices AN - 51532813; 2006-081821 JF - Analytical Chemistry (Washington, DC) AU - D'Silva, Arthur P AU - Bajic, Stanley J AU - Zamzow, Dan Y1 - 1993/11/01/ PY - 1993 DA - 1993 Nov 01 SP - 3174 EP - 3175 PB - American Chemical Society, Washington, DC VL - 65 IS - 21 SN - 0003-2700, 0003-2700 KW - soils KW - methods KW - experimental studies KW - chemical analysis KW - acids KW - soil vapor extraction KW - solutes KW - solution KW - temperature KW - radioactive waste KW - gases KW - laboratory studies KW - metals KW - hydrochloric acid KW - applications KW - uranium KW - inorganic acids KW - actinides KW - 25:Soils KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51532813?accountid=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=Analytical+Chemistry+%28Washington%2C+DC%29&rft.atitle=Remote+acid+gas-phase+dissolution+for+the+determination+of+uranium+in+soil+matrices&rft.au=D%27Silva%2C+Arthur+P%3BBajic%2C+Stanley+J%3BZamzow%2C+Dan&rft.aulast=D%27Silva&rft.aufirst=Arthur&rft.date=1993-11-01&rft.volume=65&rft.issue=21&rft.spage=3174&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%2C+DC%29&rft.issn=00032700&rft_id=info:doi/ L2 - http://pubs.acs.org/journal/ancham LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Number of references - 3 N1 - PubXState - DC N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-03-14 N1 - SubjectsTermNotLitGenreText - acids; actinides; applications; chemical analysis; experimental studies; gases; hydrochloric acid; inorganic acids; laboratory studies; metals; methods; radioactive waste; soil vapor extraction; soils; solutes; solution; temperature; uranium ER - TY - RPRT T1 - Demonstrate Ames Laboratory capability in probabilistic risk assessment AN - 52830594; 1996-045777 AB - In response to the damage which occurred during the Three Mile Island nuclear accident, the Nuclear Regulatory Commission (NRC) has implemented a Probabilistic Risk Assessment (PRA) program to evaluate the safety of nuclear power facilities during events with a low probability of occurrence. The PRA can be defined as a mathematical technique to identify and rank the importance of event sequences that can lead to a severe nuclear accident. Another PRA application is the evaluation of nuclear containment buildings due to earthquakes. In order to perform a seismic PRA, the two conditional probabilities of ground motion and of structural failure of the different components given a specific earthquake are first studied. The first of these is termed probability of exceedance and the second as seismic fragility analysis. The seismic fragility analysis is then related to the ground motion measured in terms of "g" to obtain a plant level fragility curve. JF - Demonstrate Ames Laboratory capability in probabilistic risk assessment AU - Bluhm, D AU - Greimann, L AU - Fanous, F AU - Challa, R AU - Gupta, S Y1 - 1993/07// PY - 1993 DA - July 1993 SP - 55 VL - IS-5087 KW - failures KW - geologic hazards KW - statistical analysis KW - power plants KW - seismic response KW - structures KW - safety KW - seismic risk KW - mathematical methods KW - ground motion KW - risk assessment KW - probability KW - nuclear facilities KW - earthquakes KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52830594?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Bluhm%2C+D%3BGreimann%2C+L%3BFanous%2C+F%3BChalla%2C+R%3BGupta%2C+S&rft.aulast=Bluhm&rft.aufirst=D&rft.date=1993-07-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Demonstrate+Ames+Laboratory+capability+in+probabilistic+risk+assessment&rft.title=Demonstrate+Ames+Laboratory+capability+in+probabilistic+risk+assessment&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from NTIS database, National Technical Information Service, Springfield, VA, United States N1 - Date revised - 1996-01-01 N1 - Availability - National Technical Information Service, (703)605-6000, order number DE94005570NEG, Springfield, VA, United States N1 - SuppNotes - Contract W-7405-ENG-82 N1 - Last updated - 2012-06-07 ER - TY - JOUR T1 - Separation and identification of DNA-carcinogen adduct conformers by polyacrylamide gel electrophoresis with laser-induced fluorescence detection. AN - 73393506; 1463222 AB - We have developed a separation protocol utilizing high-resolution polyacrylamide gel electrophoresis (PAGE) to isolate stable anti-benzo[a]pyrene diol epoxide adducts of oligodeoxynucleotides. Both enantiomers produced multiple adduct species. The distribution of adduct types could be quantitated by densitometry of autoradiograms or Cerenkov counting of eluted oligomers modified by anti-BPDE isomers. Laser-induced fluorescence (LIF) spectra of eluted adducts at 4.2 K (fluorescence line-narrowing spectroscopy) and 77 K revealed that bands corresponded to pure conformers of pyrene chromophore. Carcinogen-modified oligodeoxynucleotides were single-stranded, but there were often considerable stacking interactions between the pyrenyl residues and the oligonucleotide bases, indicating that electrophoresed oligomers were single-stranded but in a native, versus random coil, conformation. The ability to identify and quantitate adducts by PAGE-LIF, coupled with the high resolution and sensitivity of both techniques, makes PAGE and LIF in tandem a potentially powerful tool in the study of chemical carcinogenesis or other ligand-DNA interactions. JF - Analytical chemistry AU - Marsch, G A AU - Jankowiak, R AU - Farhat, J H AU - Small, G J AD - Ames Laboratory-USDOE, Iowa State University 50011. Y1 - 1992/12/01/ PY - 1992 DA - 1992 Dec 01 SP - 3038 EP - 3044 VL - 64 IS - 23 SN - 0003-2700, 0003-2700 KW - Oligodeoxyribonucleotides KW - 0 KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Base Sequence KW - Molecular Sequence Data KW - Lasers KW - Autoradiography KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- toxicity KW - DNA -- isolation & purification KW - Spectrometry, Fluorescence -- methods KW - Electrophoresis, Polyacrylamide Gel KW - DNA Damage KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- isolation & purification KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- chemistry KW - DNA -- drug effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73393506?accountid=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=Analytical+chemistry&rft.atitle=Separation+and+identification+of+DNA-carcinogen+adduct+conformers+by+polyacrylamide+gel+electrophoresis+with+laser-induced+fluorescence+detection.&rft.au=Marsch%2C+G+A%3BJankowiak%2C+R%3BFarhat%2C+J+H%3BSmall%2C+G+J&rft.aulast=Marsch&rft.aufirst=G&rft.date=1992-12-01&rft.volume=64&rft.issue=23&rft.spage=3038&rft.isbn=&rft.btitle=&rft.title=Analytical+chemistry&rft.issn=00032700&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1993-01-12 N1 - Date created - 1993-01-12 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Use of macroreticular resins in the analysis of water for trace organic contaminants, by G. A. Junk, J. J. Richard, M. D. Grieser, D. Witiak, J. L. Witiak, M. D. Arguello, R. Vick, H. J. Svec, J. S. Fritz and G. V. Calder, J. Chromatogr., 99 (1974) 745-762. AN - 73430593; 1474129 JF - Journal of chromatography AU - Fritz, J S AU - Junk, G A AD - Ames Laboratory, US Department of Energy, IA. Y1 - 1992/11/20/ PY - 1992 DA - 1992 Nov 20 SP - 87 EP - 90 VL - 625 IS - 2 KW - Polystyrenes KW - 0 KW - Water Pollutants, Chemical KW - Amberlite XAD-2 resin KW - 9060-05-3 KW - Index Medicus KW - History of medicine KW - Periodicals as Topic KW - History, 20th Century KW - Water Pollutants, Chemical -- analysis KW - Chromatography -- history KW - Chromatography -- methods KW - Polystyrenes -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73430593?accountid=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+chromatography&rft.atitle=Use+of+macroreticular+resins+in+the+analysis+of+water+for+trace+organic+contaminants%2C+by+G.+A.+Junk%2C+J.+J.+Richard%2C+M.+D.+Grieser%2C+D.+Witiak%2C+J.+L.+Witiak%2C+M.+D.+Arguello%2C+R.+Vick%2C+H.+J.+Svec%2C+J.+S.+Fritz+and+G.+V.+Calder%2C+J.+Chromatogr.%2C+99+%281974%29+745-762.&rft.au=Fritz%2C+J+S%3BJunk%2C+G+A&rft.aulast=Fritz&rft.aufirst=J&rft.date=1992-11-20&rft.volume=625&rft.issue=2&rft.spage=87&rft.isbn=&rft.btitle=&rft.title=Journal+of+chromatography&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1993-02-03 N1 - Date created - 1993-02-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Evidence of involvement of multiple sites of metabolism in the in vivo covalent binding of dibenzo[a,h]pyrene to DNA. AN - 73470405; 1489926 AB - The in vivo formation of dibenzo[a,h]pyrene-DNA adducts in mouse skin was assessed by laser-excited fluorescence spectroscopy at 77 and 4.2 K. Two adducts were identified with fluorescence origin bands at approximately 383.5 and 407.2 nm, and these were shown to possess pyrene and benzo[a]pyrene (B[a]P) chromophores, respectively. Both DNA-bound chromophores displayed considerable electron-phonon coupling and likely assume a highly base-stacked or quasi-intercalated configuration within DNA duplexes. The presence of B[a]P and pyrene aromatic systems indicates that two-electron or monooxygenation metabolism occurred on either the a or h benzo moieties (which are equivalent) in the former case, and on both these rings in the latter case. The presence of two adduct species agrees with 32P-postlabeling analysis of the DNA, which showed the presence of two major adducts in both thin-layer and high-performance liquid chromatographic separations. JF - Chemical research in toxicology AU - Marsch, G A AU - Jankowiak, R AU - Small, G J AU - Hughes, N C AU - Phillips, D H AD - Ames Laboratory, USDOE, Ames, Iowa. PY - 1992 SP - 765 EP - 772 VL - 5 IS - 6 SN - 0893-228X, 0893-228X KW - Benzopyrenes KW - 0 KW - Mutagens KW - Phosphorus Radioisotopes KW - DNA KW - 9007-49-2 KW - dibenzo(a,h)pyrene KW - XR5R3V8BJK KW - Index Medicus KW - Oxidation-Reduction KW - Animals KW - Spectrometry, Fluorescence KW - Skin -- metabolism KW - In Vitro Techniques KW - Mice KW - Chromatography, Thin Layer KW - Autoradiography KW - Male KW - Chromatography, High Pressure Liquid KW - Binding Sites KW - DNA -- isolation & purification KW - Mutagens -- metabolism KW - DNA -- metabolism KW - Benzopyrenes -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/73470405?accountid=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=Chemical+research+in+toxicology&rft.atitle=Evidence+of+involvement+of+multiple+sites+of+metabolism+in+the+in+vivo+covalent+binding+of+dibenzo%5Ba%2Ch%5Dpyrene+to+DNA.&rft.au=Marsch%2C+G+A%3BJankowiak%2C+R%3BSmall%2C+G+J%3BHughes%2C+N+C%3BPhillips%2C+D+H&rft.aulast=Marsch&rft.aufirst=G&rft.date=1992-11-01&rft.volume=5&rft.issue=6&rft.spage=765&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1993-03-04 N1 - Date created - 1993-03-04 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Effects of dispersion on the inference of metal texture from S0 plate mode measurements. Part I. Evaluation of dispersion correction methods. AN - 85148876; pmid-1564187 AB - Ultrasonic S0 waves (fundamental symmetric Lamb modes) are being considered in several laboratories for the nondestructive characterization of the texture (preferred grain orientation) and formability of metal sheets and plates. In a typical experimental setup, the velocities of the S0 waves are measured as a function of wave propagation angle with respect to the rolling direction of the plate. However, the S0 waves are known to be dispersive, and that dispersion must be considered in order to isolate the small, texture-induced shifts in the S0 wave velocity. Currently, there are two approximate dispersion correction methods, one proposed by Thompson et al. [Met. Trans. A 20, 2431 (1989)] and the other introduced by Hirao and Fukuoka [J. Acoust. Soc. Am. 85, 2311 (1989)]. In this paper, these two methods will be evaluated using an exact theory for wave propagation in orthotropic plates. Through the evaluation, the limits of the current texture measurement techniques are established. It is found that when plate thickness to wavelength ratio is less than 0.15, both Thompson's and Hirao's methods work satisfactorily. When the thickness to wavelength ratio exceeds 0.3, neither Thompson's nor Hirao's dispersion correction method provides adequate corrections for the current texture measurement techniques. Within the range of 0.15-0.3, Thompson's method is recommended for weakly anisotropic sheets and plates and Hirao's method may be more appropriate for some strongly anisotropic cases. JF - The Journal of the Acoustical Society of America AU - Li Y AU - Thompson, R B AD - Ames Laboratory, Iowa State University 50011. PY - 1992 SP - 1298 EP - 1309 VL - 91 IS - 3 SN - 0001-4966, 0001-4966 UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/85148876?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Acomdisdome&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+the+Acoustical+Society+of+America&rft.atitle=Effects+of+dispersion+on+the+inference+of+metal+texture+from+S0+plate+mode+measurements.+Part+I.+Evaluation+of+dispersion+correction+methods.&rft.au=Li+Y%3BThompson%2C+R+B&rft.aulast=Li+Y&rft.aufirst=&rft.date=1992-03-01&rft.volume=91&rft.issue=3&rft.spage=1298&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+the+Acoustical+Society+of+America&rft.issn=00014966&rft_id=info:doi/ LA - English DB - ComDisDome N1 - Last updated - 2010-05-07 ER - TY - JOUR T1 - Heterogeneous distributions and dispersive photodissociation rates of benzo[a]pyrene diol-epoxide enantiomer-DNA and -poly(dG-dC).poly(dG-dC) adducts. AN - 72905271; 1567987 AB - Two types of heterogeneity of adducts are illustrated and discussed utilizing non-line narrowed (S2----S0 laser excitation) and line-narrowed (excitation into the (0,0) origin band) fluorescence spectra at low temperatures. The first type (type A) is due to structurally distinct and/or energetically inequivalent conformers. The second one (type B) is provided by an inhomogeneous environment of DNA and polynucleotides. In light of the above, the non-exponential photodissociation kinetics of the (+/-)-anti-BPDE-DNA and -polynucleotide adducts have been reanalyzed in terms of a dispersive first order chemical reaction, where the inhomogeneous effects are explicitly included. It is demonstrated that the DNA structure shows considerable inhomogeneous broadening, and that type B heterogeneity is responsible for the dispersive photodissociation process. The latter is accounted for by a Gaussian distribution of activation energies, with the center of the distribution at approximately 600 meV and the full width at half-maximum equal to approximately 50 meV (approximately 2 kT). Photolabile (+/-)-anti-BPDE-DNA and -polynucleotide adducts are identified as quasi-intercalated (site I) (+)- and (-)-cis-BPDE. The calculated concentrations of cis-BPDE adducts in DNA and polynucleotides from the kinetic data are in very good agreement with the cis-BPDE adduct concentrations obtained from the spectral and/or chemical analysis. The average photodissociation rate and the photodissociation quantum yield of cis- and trans-BPDE adducts are also estimated. JF - Biophysical chemistry AU - Jankowiak, R AD - Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames 50011. Y1 - 1992/02// PY - 1992 DA - February 1992 SP - 133 EP - 146 VL - 42 IS - 2 SN - 0301-4622, 0301-4622 KW - Polydeoxyribonucleotides KW - 0 KW - poly(dC-dG) KW - 29855-95-6 KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Photochemistry KW - Stereoisomerism KW - Polydeoxyribonucleotides -- chemistry KW - DNA -- chemistry KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72905271?accountid=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=Biophysical+chemistry&rft.atitle=Heterogeneous+distributions+and+dispersive+photodissociation+rates+of+benzo%5Ba%5Dpyrene+diol-epoxide+enantiomer-DNA+and+-poly%28dG-dC%29.poly%28dG-dC%29+adducts.&rft.au=Jankowiak%2C+R&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1992-02-01&rft.volume=42&rft.issue=2&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Biophysical+chemistry&rft.issn=03014622&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1992-05-22 N1 - Date created - 1992-05-22 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Sulfur, pyrite, and pyrite morphologies in a Recent marine-influenced peat-clay sequence AN - 50377277; 1993-002479 JF - Abstracts with Programs - Geological Society of America AU - Bailey, A M AU - Irwin, R H AU - Straszheim, W E AU - Cohen, A D AU - Anonymous Y1 - 1992 PY - 1992 DA - 1992 SP - 163 PB - Geological Society of America (GSA), Boulder, CO VL - 24 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - organic materials KW - clay KW - Quaternary KW - organic residues KW - clastic sediments KW - shale KW - salinity KW - Gulf Coastal Plain KW - Holocene KW - Cenozoic KW - peat KW - organic compounds KW - sedimentary rocks KW - marine environment KW - sediments KW - sulfur KW - petrography KW - pyrite KW - Louisiana KW - sulfides KW - clastic rocks KW - 06B:Petrology of coal UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50377277?accountid=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=Sulfur%2C+pyrite%2C+and+pyrite+morphologies+in+a+Recent+marine-influenced+peat-clay+sequence&rft.au=Bailey%2C+A+M%3BIrwin%2C+R+H%3BStraszheim%2C+W+E%3BCohen%2C+A+D%3BAnonymous&rft.aulast=Bailey&rft.aufirst=A&rft.date=1992-01-01&rft.volume=24&rft.issue=7&rft.spage=163&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, 1992 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1993-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Cenozoic; clastic rocks; clastic sediments; clay; Gulf Coastal Plain; Holocene; Louisiana; marine environment; organic compounds; organic materials; organic residues; peat; petrography; pyrite; Quaternary; salinity; sedimentary rocks; sediments; shale; sulfides; sulfur; United States ER - TY - JOUR T1 - Comparative laser spectroscopic study of DNA and polynucleotide adducts from the (+)-anti-diol epoxide of benzo[a]pyrene. AN - 72116585; 1912301 AB - A recently developed methodology [Jankowiak, R., Lu, P., Small, G. J., and Geacintov, N. E. (1990) Chem. Res. Toxicol. 3, 39-46], which combines fluorescence line narrowing spectroscopy at 4.2 K with non-line-narrowed (S2----S0 laser excitation) fluorescence spectroscopy at 77 K and fluorescence quenching, is used to characterize adducts formed from (+)-anti-BPDE and the alternating copolymers poly(dG-dC).poly(dG-dC) and poly(dA-dT).poly(dA-dT), the nonalternating poly (dG).poly(dC), single-strand poly(dG), and the oligonucleotide d(ATATGTATA). Detailed comparisons of the fluorescence spectra and quenching (with acrylamide) of the properties of the adducts with those of (+)-anti-BPDE-DNA adducts are made. Fluorescence spectra of the trans and cis isomers of the adduct formed from guanosine monophosphate and the adducts of d(ATATGTATA) are used to assign the stereochemistry of the two major DNA adducts as trans-N2-dG moieties which occupy two different DNA sites. Evidence for the existence of minor cis-type guanine adducts is provided. Finally, a fourth type of DNA adduct (minor) is identified and assigned as trans-N6-dA. JF - Chemical research in toxicology AU - Lu, P Q AU - Jeong, H AU - Jankowiak, R AU - Small, G J AU - Kim, S K AU - Cosman, M AU - Gracintov, N E AD - Ames Laboratory, USDOE, Iowa State University 50011. PY - 1991 SP - 58 EP - 69 VL - 4 IS - 1 SN - 0893-228X, 0893-228X KW - DNA Adducts KW - 0 KW - Oligonucleotides KW - Polynucleotides KW - benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide-DNA KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Stereoisomerism KW - Base Sequence KW - Spectrometry, Fluorescence KW - Oligonucleotides -- chemistry KW - Molecular Sequence Data KW - Lasers KW - Oligonucleotides -- metabolism KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- metabolism KW - Polynucleotides -- chemistry KW - DNA -- metabolism KW - Polynucleotides -- metabolism KW - DNA -- chemistry KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/72116585?accountid=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=Chemical+research+in+toxicology&rft.atitle=Comparative+laser+spectroscopic+study+of+DNA+and+polynucleotide+adducts+from+the+%28%2B%29-anti-diol+epoxide+of+benzo%5Ba%5Dpyrene.&rft.au=Lu%2C+P+Q%3BJeong%2C+H%3BJankowiak%2C+R%3BSmall%2C+G+J%3BKim%2C+S+K%3BCosman%2C+M%3BGracintov%2C+N+E&rft.aulast=Lu&rft.aufirst=P&rft.date=1991-01-01&rft.volume=4&rft.issue=1&rft.spage=58&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1991-11-04 N1 - Date created - 1991-11-04 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Direct injection nebulization for inductively coupled plasma mass spectrometry AN - 1777466348; 2016-027309 AB - The advantages of an improved direct injection nebulizer for ICP- MS are discussed. Used in a continuous flow mode the precision is typically 0.5% relative standard deviation, four orders of magnitude improvement over conventional nebulizers, and relative detection limits are similar. A lower rinse out time of only 15s reduced memory effects to only 0.1% of the steady state signal even for memory prone elements such as Hg and I. The absolute detection limits are improved by an order of magnitude because the sample flow rate is slower (120 mu litres/min). There is also an improvement in the refractory oxide ion ratios (MO (super +) /M (super +) ), which are 3 times higher than with other nebulizers. JF - Analytical Chemistry (Washington, DC) AU - Wiederin, Daniel R AU - Smith, Fred G AU - Houk, R S Y1 - 1991 PY - 1991 DA - 1991 SP - 219 EP - 225 PB - American Chemical Society, Washington, DC VL - 63 IS - 3 SN - 0003-2700, 0003-2700 KW - methods KW - precision KW - inductively coupled plasma methods KW - detection limit KW - refractory materials KW - statistical analysis KW - standard deviation KW - mass spectroscopy KW - flow injection KW - ions KW - direct injection nebulizer KW - nebulization KW - oxides KW - spectroscopy KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1777466348?accountid=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=Analytical+Chemistry+%28Washington%2C+DC%29&rft.atitle=Direct+injection+nebulization+for+inductively+coupled+plasma+mass+spectrometry&rft.au=Wiederin%2C+Daniel+R%3BSmith%2C+Fred+G%3BHouk%2C+R+S&rft.aulast=Wiederin&rft.aufirst=Daniel&rft.date=1991-01-01&rft.volume=63&rft.issue=3&rft.spage=219&rft.isbn=&rft.btitle=&rft.title=Analytical+Chemistry+%28Washington%2C+DC%29&rft.issn=00032700&rft_id=info:doi/10.1021%2Fac00003a007 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom N1 - Date revised - 2016-01-01 N1 - PubXState - DC N1 - Last updated - 2016-04-01 N1 - SubjectsTermNotLitGenreText - detection limit; direct injection nebulizer; flow injection; inductively coupled plasma methods; ions; mass spectroscopy; methods; nebulization; oxides; precision; refractory materials; spectroscopy; standard deviation; statistical analysis DO - http://dx.doi.org/10.1021/ac00003a007 ER - TY - JOUR T1 - Laser spectroscopic studies of DNA adduct structure types from enantiomeric diol epoxides of benzo[a]pyrene. AN - 80403037; 2131823 AB - A methodology based on 77 K laser-excited fluorescence spectroscopy, fluorescence quenching, and fluorescence line narrowing is shown to be a highly selective and sensitive approach for the study of polycyclic aromatic carcinogen-DNA complexes. Three and five different DNA adducts derived from (+)-trans-7,8-dihydroxy-anti-9,10-epoxy-7,8,9,10-tetrahydrobenzo [a]pyrene and its (-)-enantiomer are identified, respectively. Two different methods are used to classify the adducts as type I (interior) or type II (exterior), and both yield consistent results. The first high-resolution fluorescence excitation spectra are reported for DNA adducts. These spectra are suggested to be useful for characterizing the strength of the interaction between the fluorescent chromophores and the DNA bases. The above methodology has the potential for monitoring the fates of different adducts as a function of time in repair-competent cells. JF - Chemical research in toxicology AU - Jankowiak, R AU - Lu, P Q AU - Small, G J AU - Geacintov, N E AD - Ames Laboratory--USDOE, Iowa State University 50011. PY - 1990 SP - 39 EP - 46 VL - 3 IS - 1 SN - 0893-228X, 0893-228X KW - DNA Adducts KW - 0 KW - benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide-DNA KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Animals KW - Stereoisomerism KW - Cattle KW - Spectrometry, Fluorescence KW - Lasers KW - Spectrophotometry -- methods KW - DNA -- chemistry KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80403037?accountid=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=Chemical+research+in+toxicology&rft.atitle=Laser+spectroscopic+studies+of+DNA+adduct+structure+types+from+enantiomeric+diol+epoxides+of+benzo%5Ba%5Dpyrene.&rft.au=Jankowiak%2C+R%3BLu%2C+P+Q%3BSmall%2C+G+J%3BGeacintov%2C+N+E&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1990-01-01&rft.volume=3&rft.issue=1&rft.spage=39&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1991-12-30 N1 - Date created - 1991-12-30 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Fluorescence line-narrowing spectrometry: a versatile tool for the study of chemically initiated carcinogenesis. AN - 80340716; 2128812 AB - An important initiating step in the induction of tumors is believed to be the covalent binding of an active carcinogenic species to a cellular macromolecule, e.g. DNA. Therefore, a spectroscopic technique which allows for positive identification of the intact (macromolecular) DNA adduct and/or isolated damaged nucleosides/nucleotides is highly desirable. It is shown that fluorescence line-narrowing spectroscopy (FLNS) is a rapid, versatile, highly sensitive and selective analytical technique, which can be used directly to characterize DNA adducts and isolated nucleosides. FLNS possesses sufficient resolution to distinguish between the major DNA adducts derived from different enantiomers of benzo[a]pyrene diol-epoxide (BPDE). With the present limit of detection (approximately 1 adducted base per 10(8) normal base pairs for 100 micrograms of DNA), the technique is applicable to in vivo samples. Analysis of liver DNA from fish exposed to benzo[a]pyrene (BP) (100 mg BP/kg fish) showed that a major DNA adduct is derived from syn-BPDE. JF - Journal of pharmaceutical and biomedical analysis AU - Jankowiak, R AU - Lu, P AU - Small, G J AU - Nishimoto, M AU - Varanasi, U AU - Kim, S K AU - Geacintov, N E AD - Ames Laboratory-USDOE, Iowa State University 50011. Y1 - 1990 PY - 1990 DA - 1990 SP - 113 EP - 121 VL - 8 IS - 2 SN - 0731-7085, 0731-7085 KW - Carcinogens KW - 0 KW - DNA Adducts KW - benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide-DNA KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Stereoisomerism KW - Spectrometry, Fluorescence KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- metabolism KW - Carcinogens -- metabolism KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- analysis KW - DNA -- metabolism KW - DNA -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/80340716?accountid=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+pharmaceutical+and+biomedical+analysis&rft.atitle=Fluorescence+line-narrowing+spectrometry%3A+a+versatile+tool+for+the+study+of+chemically+initiated+carcinogenesis.&rft.au=Jankowiak%2C+R%3BLu%2C+P%3BSmall%2C+G+J%3BNishimoto%2C+M%3BVaranasi%2C+U%3BKim%2C+S+K%3BGeacintov%2C+N+E&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1990-01-01&rft.volume=8&rft.issue=2&rft.spage=113&rft.isbn=&rft.btitle=&rft.title=Journal+of+pharmaceutical+and+biomedical+analysis&rft.issn=07317085&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1991-07-03 N1 - Date created - 1991-07-03 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Fluorescence line narrowing spectrometric analysis of benzo[a]pyrene-DNA adducts formed by one-electron oxidation. AN - 79585786; 2519228 AB - Fluorescence line narrowing (FLN) was demonstrated for five benzo[a]pyrene (BP)-nucleoside adducts synthesized by one-electron oxidation of BP in the presence of guanosine, deoxyguanosine, and deoxyadenosine. The standard FLN spectra were used to prove that a major depurination adduct from the binding of BP to DNA in rat liver nuclei is 7-(benzo[a]pyren-6-yl)guanine (N7Gua). The structural characterization was performed with only 20 pg of the adduct. Metabolic activation of BP by one-electron oxidation in the horseradish peroxidase catalyzed reaction of BP with DNA (in vitro) was also investigated. The major adduct identified was 8-(benzo[a]pyren-6-yl)guanine (C8Gua). JF - Chemical research in toxicology AU - Zamzow, D AU - Jankowiak, R AU - Cooper, R S AU - Small, G J AU - Tibbels, S R AU - Cremonesi, P AU - Devanesan, P AU - Rogan, E G AU - Cavalieri, E L AD - Ames Laboratory-USDOE, Iowa 50011. PY - 1989 SP - 29 EP - 34 VL - 2 IS - 1 SN - 0893-228X, 0893-228X KW - DNA Adducts KW - 0 KW - benzo(a)pyrene-DNA adduct KW - Benzo(a)pyrene KW - 3417WMA06D KW - Guanine KW - 5Z93L87A1R KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Rats KW - Oxidation-Reduction KW - Liver -- ultrastructure KW - Animals KW - Spectrometry, Fluorescence -- methods KW - Cell Nucleus -- metabolism KW - Spectrum Analysis -- methods KW - Liver -- metabolism KW - Guanine -- metabolism KW - Chromatography, High Pressure Liquid KW - DNA -- metabolism KW - DNA -- chemistry KW - Benzo(a)pyrene -- chemistry KW - Benzo(a)pyrene -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/79585786?accountid=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=Chemical+research+in+toxicology&rft.atitle=Fluorescence+line+narrowing+spectrometric+analysis+of+benzo%5Ba%5Dpyrene-DNA+adducts+formed+by+one-electron+oxidation.&rft.au=Zamzow%2C+D%3BJankowiak%2C+R%3BCooper%2C+R+S%3BSmall%2C+G+J%3BTibbels%2C+S+R%3BCremonesi%2C+P%3BDevanesan%2C+P%3BRogan%2C+E+G%3BCavalieri%2C+E+L&rft.aulast=Zamzow&rft.aufirst=D&rft.date=1989-01-01&rft.volume=2&rft.issue=1&rft.spage=29&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1991-12-20 N1 - Date created - 1991-12-20 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Transient direct and inverse scattering for inhomogeneous viscoelastic media; obliquely incident SH mode AN - 51527035; 2006-086236 JF - Inverse Problems AU - Corones, J AU - Karlsson, A Y1 - 1988/08// PY - 1988 DA - August 1988 SP - 643 EP - 660 PB - Institute of Physics, Bristol VL - 4 IS - 3 SN - 0266-5611, 0266-5611 KW - seismograms KW - body waves KW - viscoelastic materials KW - numerical analysis KW - geophysical methods KW - reflection methods KW - inverse problem KW - elastic waves KW - equations KW - seismic methods KW - heterogeneous materials KW - mathematical methods KW - SH-waves KW - seismic waves KW - wave dispersion KW - S-waves KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51527035?accountid=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=Inverse+Problems&rft.atitle=Transient+direct+and+inverse+scattering+for+inhomogeneous+viscoelastic+media%3B+obliquely+incident+SH+mode&rft.au=Corones%2C+J%3BKarlsson%2C+A&rft.aulast=Corones&rft.aufirst=J&rft.date=1988-08-01&rft.volume=4&rft.issue=3&rft.spage=643&rft.isbn=&rft.btitle=&rft.title=Inverse+Problems&rft.issn=02665611&rft_id=info:doi/10.1088.%2F0266-5611%2F4%2F3%2F008 L2 - http://www.iop.org/EJ/journal/0266-5611 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Number of references - 12 N1 - SuppNotes - Includes appendix N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - body waves; elastic waves; equations; geophysical methods; heterogeneous materials; inverse problem; mathematical methods; numerical analysis; reflection methods; S-waves; seismic methods; seismic waves; seismograms; SH-waves; viscoelastic materials; wave dispersion DO - http://dx.doi.org/10.1088./0266-5611/4/3/008 ER - TY - JOUR T1 - Fluorescence line narrowing-nonphotochemical hole burning spectrometry: femtomole detection and high selectivity for intact DNA-PAH adducts. AN - 78821445; 2979713 AB - A new fluorescence line narrowing (FLN) apparatus is described and evaluated through experiments on intact DNA-PAH (polycyclic aromatic hydrocarbon) and globin-PAH adducts, as well as polar PAH metabolites. A detection limit of approximately 3 modified bases in 10(8) for a DNA adduct formed with a diol-epoxide of benzo[a]pyrene (BPDE-DNA) is reported for 20 micrograms of DNA at a spectral resolution of approximately 8 cm-1. The methodology employed avoids or minimizes spectral degradation and loss of sensitivity due to photooxidation and nonphotochemical hole burning (NPHB). A new double selection technique that employs both FLN and NPHB is described and found to lead to a significant improvement in selectivity over that obtained with conventional FLN. JF - Chemical research in toxicology AU - Jankowiak, R AU - Cooper, R S AU - Zamzow, D AU - Small, G J AU - Doskocil, G AU - Jeffrey, A M AD - Ames Laboratory--USDOE and Department of Chemistry, Iowa State University, Ames 50011. PY - 1988 SP - 60 EP - 68 VL - 1 IS - 1 SN - 0893-228X, 0893-228X KW - DNA Adducts KW - 0 KW - Polycyclic Compounds KW - benzo(a)pyrene-7,8-dihydrodiol-9,10-epoxide-DNA KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide KW - 55097-80-8 KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Spectrometry, Fluorescence -- methods KW - Microchemistry KW - 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide -- analysis KW - Polycyclic Compounds -- analysis KW - DNA -- analysis KW - DNA -- chemistry KW - Polycyclic Compounds -- chemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/78821445?accountid=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=Chemical+research+in+toxicology&rft.atitle=Fluorescence+line+narrowing-nonphotochemical+hole+burning+spectrometry%3A+femtomole+detection+and+high+selectivity+for+intact+DNA-PAH+adducts.&rft.au=Jankowiak%2C+R%3BCooper%2C+R+S%3BZamzow%2C+D%3BSmall%2C+G+J%3BDoskocil%2C+G%3BJeffrey%2C+A+M&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1988-01-01&rft.volume=1&rft.issue=1&rft.spage=60&rft.isbn=&rft.btitle=&rft.title=Chemical+research+in+toxicology&rft.issn=0893228X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1992-03-09 N1 - Date created - 1992-03-09 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Enhancement of sensitivity of fluorescence line narrowing spectrometry for detection of carcinogen-DNA adducts. AN - 78564264; 3198223 AB - Fluorescence line narrowing (FLN), is a method by which highly characteristic spectra have been obtained for a large number of polycyclic aromatic hydrocarbon (PAH)-DNA adducts and is well suited for the analysis of exposures to complex mixtures of PHA. The basic method is described and recent improvements discussed which overcome one of the major limitations of the method to its wider application to biological samples, that is its sensitivity. JF - IARC scientific publications AU - Jankowiak, R AU - Cooper, R S AU - Zamzow, D AU - Small, G J AU - Doskocil, G AU - Jeffrey, A M AD - Ames Laboratory, Department of Energy, Iowa State University. Y1 - 1988 PY - 1988 DA - 1988 SP - 372 EP - 377 IS - 89 SN - 0300-5038, 0300-5038 KW - Carcinogens KW - 0 KW - Polycyclic Compounds KW - DNA KW - 9007-49-2 KW - Index Medicus KW - Animals KW - Mice KW - Polycyclic Compounds -- metabolism KW - Carcinogens -- metabolism KW - Spectrometry, Fluorescence KW - DNA -- metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/78564264?accountid=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=IARC+scientific+publications&rft.atitle=Enhancement+of+sensitivity+of+fluorescence+line+narrowing+spectrometry+for+detection+of+carcinogen-DNA+adducts.&rft.au=Jankowiak%2C+R%3BCooper%2C+R+S%3BZamzow%2C+D%3BSmall%2C+G+J%3BDoskocil%2C+G%3BJeffrey%2C+A+M&rft.aulast=Jankowiak&rft.aufirst=R&rft.date=1988-01-01&rft.volume=&rft.issue=89&rft.spage=372&rft.isbn=&rft.btitle=&rft.title=IARC+scientific+publications&rft.issn=03005038&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1989-01-18 N1 - Date created - 1989-01-18 N1 - Date revised - 2017-02-17 N1 - Last updated - 2017-02-21 ER - TY - JOUR T1 - Inverse scattering for viscoelastic media using transmission data AN - 51899296; 2004-009603 JF - Inverse Problems AU - Karlsson, A Y1 - 1987/11// PY - 1987 DA - November 1987 SP - 691 EP - 709 PB - Institute of Physics, Bristol VL - 3 IS - 4 SN - 0266-5611, 0266-5611 KW - inverse scattering method KW - one-dimensional models KW - mathematical methods KW - geophysical methods KW - signal-to-noise ratio KW - mathematical models KW - inverse problem KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51899296?accountid=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=Inverse+Problems&rft.atitle=Inverse+scattering+for+viscoelastic+media+using+transmission+data&rft.au=Karlsson%2C+A&rft.aulast=Karlsson&rft.aufirst=A&rft.date=1987-11-01&rft.volume=3&rft.issue=4&rft.spage=691&rft.isbn=&rft.btitle=&rft.title=Inverse+Problems&rft.issn=02665611&rft_id=info:doi/ L2 - http://www.iop.org/EJ/journal/0266-5611 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 16 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - geophysical methods; inverse problem; inverse scattering method; mathematical methods; mathematical models; one-dimensional models; signal-to-noise ratio ER - TY - JOUR T1 - Phase retrieval for the variable velocity classical wave equation AN - 51961863; 2003-052192 JF - Inverse Problems AU - Rose, J H Y1 - 1986/05// PY - 1986 DA - May 1986 SP - 219 EP - 228 PB - Institute of Physics, Bristol VL - 2 IS - 2 SN - 0266-5611, 0266-5611 KW - acoustical properties KW - data processing KW - mathematical geology KW - inverse problem KW - elastic waves KW - equations KW - frequency domain analysis KW - velocity KW - elastodynamic properties KW - time domain analysis KW - propagation KW - seismic waves KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51961863?accountid=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=Inverse+Problems&rft.atitle=Phase+retrieval+for+the+variable+velocity+classical+wave+equation&rft.au=Rose%2C+J+H&rft.aulast=Rose&rft.aufirst=J&rft.date=1986-05-01&rft.volume=2&rft.issue=2&rft.spage=219&rft.isbn=&rft.btitle=&rft.title=Inverse+Problems&rft.issn=02665611&rft_id=info:doi/ L2 - http://www.iop.org/EJ/journal/0266-5611 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2003-01-01 N1 - Number of references - 12 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - acoustical properties; data processing; elastic waves; elastodynamic properties; equations; frequency domain analysis; inverse problem; mathematical geology; propagation; seismic waves; time domain analysis; velocity ER - TY - JOUR T1 - On the Born approximation for weak uniform scatterers AN - 51898479; 2004-006408 JF - Inverse Problems AU - Kogan, V G AU - Lopes, E F Y1 - 1985/11// PY - 1985 DA - November 1985 SP - 331 EP - 338 PB - Institute of Physics, Bristol VL - 1 IS - 4 SN - 0266-5611, 0266-5611 KW - inverse scattering method KW - Fourier analysis KW - mathematical methods KW - data processing KW - inverse problem KW - Born approximation KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51898479?accountid=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=Inverse+Problems&rft.atitle=On+the+Born+approximation+for+weak+uniform+scatterers&rft.au=Kogan%2C+V+G%3BLopes%2C+E+F&rft.aulast=Kogan&rft.aufirst=V&rft.date=1985-11-01&rft.volume=1&rft.issue=4&rft.spage=331&rft.isbn=&rft.btitle=&rft.title=Inverse+Problems&rft.issn=02665611&rft_id=info:doi/ L2 - http://www.iop.org/EJ/journal/0266-5611 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2004-01-01 N1 - Number of references - 7 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Born approximation; data processing; Fourier analysis; inverse problem; inverse scattering method; mathematical methods ER - TY - RPRT T1 - Fossil energy program; technical progress report; 1 January 1979 through 31 March 1979; I, Mining research and development, coal preparation and analysis AN - 51930870; 1980-042623 JF - Fossil energy program; technical progress report; 1 January 1979 through 31 March 1979; I, Mining research and development, coal preparation and analysis Y1 - 1979/06// PY - 1979 DA - June 1979 SP - 26 VL - IS-4703 KW - programs KW - mining KW - sedimentary rocks KW - organic residues KW - coal KW - deposits KW - production KW - review KW - 29:Economic geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51930870?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1979-06-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Fossil+energy+program%3B+technical+progress+report%3B+1+January+1979+through+31+March+1979%3B+I%2C+Mining+research+and+development%2C+coal+preparation+and+analysis&rft.title=Fossil+energy+program%3B+technical+progress+report%3B+1+January+1979+through+31+March+1979%3B+I%2C+Mining+research+and+development%2C+coal+preparation+and+analysis&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1980-01-01 N1 - Availability - National Technical Information Service, Springfield, VA, United States (USA) N1 - Document feature - illus. N1 - SuppNotes - Individual papers within scope are cited separately N1 - Last updated - 2012-06-06 ER - TY - RPRT T1 - Rapid analysis of mineral content of coals; development of an on-line monitoring instrument for pyrite and ash in coal AN - 51929588; 1980-042624 JF - Fossil energy program; technical progress report; 1 January 1979 through 31 March 1979; I, Mining research and development, coal preparation and analysis AU - Jacobson, R A AU - Benson, J E Y1 - 1979/06// PY - 1979 DA - June 1979 VL - IS-4703 KW - organic residues KW - development KW - properties KW - deposits KW - X-ray diffraction analysis KW - sedimentary rocks KW - mineral composition KW - ash KW - coal KW - composition KW - X-ray analysis KW - pyrite KW - sulfides KW - instruments KW - 06:Sedimentary petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51929588?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=report&rft.jtitle=&rft.atitle=&rft.au=Jacobson%2C+R+A%3BBenson%2C+J+E&rft.aulast=Jacobson&rft.aufirst=R&rft.date=1979-06-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Rapid+analysis+of+mineral+content+of+coals%3B+development+of+an+on-line+monitoring+instrument+for+pyrite+and+ash+in+coal&rft.title=Rapid+analysis+of+mineral+content+of+coals%3B+development+of+an+on-line+monitoring+instrument+for+pyrite+and+ash+in+coal&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1980-01-01 N1 - Availability - National Technical Information Service, Springfield, VA, United States (USA) N1 - Last updated - 2012-06-06 ER - TY - MGZN T1 - The Nutrition of Humus-Plants AN - 128164892 AB - ONLY a soil that has never sustained vegetable life, such as the dusty surface of some newly made volcanic island, consists entirely of mineral matters. When the first plants arrive-- even the first minute algae and lichens, their dead bodies and cast-off parts begin to form a portion of the substratum. Before long a considerable quantity of disorganized vegetable substance is found, and this becomes thoroughly commingled with the purely mineral constituents by the action of animal life and the rains. JF - American Gardening (1892-1904) AU - THE AMES LABORATORY Y1 - 1900/08/18/ PY - 1900 DA - 1900 Aug 18 SP - 552 CY - New York, NY PB - Center for Research Libraries VL - 21 IS - 295 KW - Gardening And Horticulture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/128164892?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aamericanperiodicals&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Gardening+%281892-1904%29&rft.atitle=The+Nutrition+of+Humus-Plants%3A+R.+Y.+LEAVITT&rft.au=THE+AMES+LABORATORY&rft.aulast=THE+AMES+LABORATORY&rft.aufirst=&rft.date=1900-08-18&rft.volume=21&rft.issue=295&rft.spage=552&rft.isbn=&rft.btitle=&rft.title=American+Gardening+%281892-1904%29&rft.issn=&rft_id=info:doi/ LA - English DB - American Periodicals N1 - Copyright - Copyright Center for Research Libraries Aug 18, 1900 N1 - Last updated - 2010-05-27 ER - TY - MGZN T1 - Seedlings of Sagittaria, Nymphaea, and Other Aquatics AN - 128118492 AB - WHEN the very numerous akens produced from a flower of Sagittaria montevidensis are fully ripe, they loosen their hold upon the receptacle simultaneously. Falling into the water and floating away, after a day or two, those at least that are fertile, sink to the bottom, and germination is very shortly manifested. The cotyledon elongating pushes out the caulicle, at the end of which the primary root is soon seen as a conical projection. At first the germinating seedling lies on its side--if the... JF - American Gardening (1892-1904) AU - ROBERT G LEAVITTTHE AMES LABORATORY Y1 - 1900/04/28/ PY - 1900 DA - 1900 Apr 28 SP - 292 CY - New York, NY PB - Center for Research Libraries VL - 21 IS - 279 KW - Gardening And Horticulture UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/128118492?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aamericanperiodicals&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Gardening+%281892-1904%29&rft.atitle=Seedlings+of+Sagittaria%2C+Nymphaea%2C+and+Other+Aquatics&rft.au=ROBERT+G+LEAVITTTHE+AMES+LABORATORY&rft.aulast=ROBERT+G+LEAVITTTHE+AMES+LABORATORY&rft.aufirst=&rft.date=1900-04-28&rft.volume=21&rft.issue=279&rft.spage=292&rft.isbn=&rft.btitle=&rft.title=American+Gardening+%281892-1904%29&rft.issn=&rft_id=info:doi/ LA - English DB - American Periodicals N1 - Copyright - Copyright Center for Research Libraries Apr 28, 1900 N1 - Last updated - 2010-05-27 ER - TY - JOUR T1 - Controlled dissolution of silicon dioxide layers for depth resolved multielement analysis by inductively coupled plasma-mass spectrometry AN - 746298746; 13009862 AB - Dissolution procedures were developed to control the number of surface layers removed, in an attempt to achieve depth resolved analysis by inductively coupled plasma-mass spectrometry (ICP-MS). NIST 612 glass was chosen because it is a homogeneous material with many elements at interesting concentrations, ~50ppm. Varying dissolution time and HF concentration resulted in the reproducible removal of SiO2 layers as thin as 70A? deep. Dissolved trace metals were determined after dilution by inductively coupled plasma-mass spectrometry (ICP-MS) with a magnetic sector instrument. The amount removed was determined from the concentration of a major element, Ca. With the exception of Zn, trace metal concentrations agreed reasonably well with their certified values for removal depths of 500, 300 and 150A?. Zinc concentration was significantly high in all dissolutions indicating either a contamination problem or that Zn is removed at a faster rate than Ca. For the dissolutions that removed 70A? of SiO2, Cr, Mn, Co, Sr, Cd, Ce, Dy, Er, Yb and U recovery results agreed with their certified values (~50ppm); Ti, As, Mo, Ba, and Th could not be determined because net intensities were below 3Ief of the blank; and measured concentrations for Cu, Pb and Zn were well above the certified values. JF - Spectrochimica Acta Part B Atomic Spectroscopy AU - Lorge, Susan E AU - Houk, R S AD - Ames Laboratory, U. S. Department of Energy, Department of Chemistry, Iowa State University, Ames, IA 50011, USA, rshouk@iastate.edu SP - 1235 EP - 1239 PB - Elsevier Science, P.O. Box 211 Amsterdam 1000 AE Netherlands VL - 64 IS - 11-12 SN - 0584-8547, 0584-8547 KW - Pollution Abstracts UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/746298746?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Spectrochimica+Acta+Part+B+Atomic+Spectroscopy&rft.atitle=Controlled+dissolution+of+silicon+dioxide+layers+for+depth+resolved+multielement+analysis+by+inductively+coupled+plasma-mass+spectrometry&rft.au=Lorge%2C+Susan+E%3BHouk%2C+R+S&rft.aulast=Lorge&rft.aufirst=Susan&rft.date=&rft.volume=64&rft.issue=11-12&rft.spage=1235&rft.isbn=&rft.btitle=&rft.title=Spectrochimica+Acta+Part+B+Atomic+Spectroscopy&rft.issn=05848547&rft_id=info:doi/10.1016%2Fj.sab.2009.09.007 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-06-01 N1 - Last updated - 2011-12-14 DO - http://dx.doi.org/10.1016/j.sab.2009.09.007 ER -