TY - JOUR AU - Jonas, David S. AU - Carlson, John AU - Goorevich, Richard S. T1 - The NSG Decision on Sensitive Nuclear Transfers: ABACC and The Additional Protocol. JO - Arms Control Today JF - Arms Control Today J1 - Arms Control Today PY - 2012/11// Y1 - 2012/11// VL - 42 IS - 9 M3 - Article SP - 14 EP - 17 SN - 0196125X AB - The article examines the decision of the Nuclear Suppliers Group (NSG) to revise the section of their guidelines covering exports relating to uranium enrichment and spent fuel reprocessing. It discusses the legal and safeguards aspects of the Brazilian-Argentine Agency for Accounting and Control of Nuclear Materials (ABACC) arrangements and an additional protocol. A conclusion is made that both meet the nonproliferation requirements of the revised NSG guidelines. KW - NUCLEAR Suppliers Group (Company) KW - URANIUM KW - FUEL KW - RADIOACTIVE substances KW - EXPORTS N1 - Accession Number: 83699878; Source Information: Nov2012, Vol. 42 Issue 9, p14; Subject Term: NUCLEAR Suppliers Group (Company); Subject Term: URANIUM; Subject Term: FUEL; Subject Term: RADIOACTIVE substances; Subject Term: EXPORTS; Subject Term: ; Number of Pages: 4p; ; Document Type: Article; UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=mth&AN=83699878&site=ehost-live&scope=site DP - EBSCOhost DB - mth ER - TY - JOUR AU - Campagnone, Mari-Josette T1 - DOE Response to Recommendation 2012-1 of the Defense Nuclear Facilities Safety Board, Savannah River Site Building 235-F Safety. JO - Federal Register (National Archives & Records Service, Office of the Federal Register) JF - Federal Register (National Archives & Records Service, Office of the Federal Register) Y1 - 2012/07/25/ VL - 77 IS - 143 M3 - Article SP - 43583 EP - 43584 SN - 00976326 AB - The article presents a notice from the U.S. Department of Energy on its response to the Recommendation 2012-1 submitted by the Defense Nuclear Facilities Safety Board regarding Savannah River Site Building 235-F Safety. KW - SAVANNAH River Site (S.C.) KW - UNITED States. Defense Nuclear Facilities Safety Board KW - UNITED States. Dept. of Energy N1 - Accession Number: 78337240; Campagnone, Mari-Josette 1; Affiliations: 1: Departmental Representative, to the Defense Nuclear Facilities Safety Board, Office of Health, Safety and Security.; Issue Info: 7/25/2012, Vol. 77 Issue 143, p43583; Subject Term: SAVANNAH River Site (S.C.); Subject Term: UNITED States. Defense Nuclear Facilities Safety Board ; Company/Entity: UNITED States. Dept. of Energy; NAICS/Industry Codes: 926110 Administration of General Economic Programs; Number of Pages: 2p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=buh&AN=78337240&site=ehost-live&scope=site DP - EBSCOhost DB - buh ER - TY - JOUR AU - Andersen, David AU - Starosvetsky, Yuli AU - Mane, Mercedes AU - Hubbard, Sean AU - Remick, Kevin AU - Wang, Xingyuan AU - Vakakis, Alexander AU - Bergman, Lawrence T1 - Non-resonant damped transitions resembling continuous resonance scattering in coupled oscillators with essential nonlinearities JO - Physica D JF - Physica D Y1 - 2012/05/15/ VL - 241 IS - 10 M3 - Article SP - 964 EP - 975 SN - 01672789 AB - Abstract: We study a peculiar damped nonlinear transition of a system of two coupled oscillators into a state of sustained nonlinear resonance scattering. This system consists of a grounded, weakly damped linear oscillator attached to a light, weakly damped oscillator with essential (nonlinearizable) stiffness nonlinearity of the third degree, and linear or nonlinear damping. We find that under specific forcing conditions the damped response of this system locks into a damped, non-resonant transition resembling continuous resonance scattering, whereby the transient damped dynamics closely follows an impulsive orbit manifold of the dynamics in the frequency–energy plane. This manifold is formed by a countable infinity of periodic orbits and an uncountable infinity of quasi-periodic orbits of the underlying Hamiltonian system, with each of these orbits representing the response of the Hamiltonian system being initially at rest and forced by an impulse applied to the linear oscillator. Hence, the damped transitions reported here appear to lock in sustained resonance scattering from a countable infinity of periodic orbits along the impulsive orbit manifold. Such transitions represent an anti-resonance state, where the dynamics is farthest away from resonance. We conjecture that such transitions are only made possible by the essential (nonlinearizable) stiffness nonlinearity of the nonlinear attachment and cannot be realized in linearizable nonlinear dynamics where resonance captures prevent sustained resonance scattering. Our findings are supported by numerical, analytical and experimental results. [Copyright &y& Elsevier] AB - Copyright of Physica D is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NONLINEAR oscillators KW - PHASE transformations (Physics) KW - STIFFNESS (Engineering) KW - DAMPING (Mechanics) KW - HAMILTONIAN systems KW - OPTICAL resonance KW - SCATTERING (Physics) KW - Essential nonlinearity KW - Impulsive orbits KW - Sustained nonlinear resonance scattering N1 - Accession Number: 73803624; Andersen, David 1,2; Email Address: davida@dnfsb.gov Starosvetsky, Yuli 1 Mane, Mercedes 3 Hubbard, Sean 3 Remick, Kevin 1 Wang, Xingyuan 1 Vakakis, Alexander 1 Bergman, Lawrence 3; Affiliation: 1: Department of Mechanical Science and Engineering, University of Illinois at Urbana–Champaign, 1206 W. Green Street, Urbana, IL 61801, USA 2: Defense Nuclear Facilities Safety Board, 625 Indiana Ave., NW, Suite 700, Washington D.C. 20004, USA 3: Department of Aerospace Engineering, University of Illinois at Urbana–Champaign, 104 S. Wright Street, Urbana, IL 61801, USA; Source Info: May2012, Vol. 241 Issue 10, p964; Subject Term: NONLINEAR oscillators; Subject Term: PHASE transformations (Physics); Subject Term: STIFFNESS (Engineering); Subject Term: DAMPING (Mechanics); Subject Term: HAMILTONIAN systems; Subject Term: OPTICAL resonance; Subject Term: SCATTERING (Physics); Author-Supplied Keyword: Essential nonlinearity; Author-Supplied Keyword: Impulsive orbits; Author-Supplied Keyword: Sustained nonlinear resonance scattering; Number of Pages: 12p; Document Type: Article L3 - 10.1016/j.physd.2012.02.009 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=73803624&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kassner, M. E. AU - Geantil, P. AU - Rosen, R. S. T1 - Ambient Temperature Creep of Type 304 Stainless Steel. JO - Journal of Engineering Materials & Technology JF - Journal of Engineering Materials & Technology Y1 - 2011/04// VL - 133 IS - 2 M3 - Article SP - 21012.1 EP - 21012.5 SN - 00944289 AB - This study reports the significant ambient temperature creep plasticity at stresses below the conventional 0.2% plastic strain off-set yield stress. This is partially due to the relatively high strain-rate sensitivity of 304 stainless steel. Cold-working significantly increases the creep resistance. Descriptive equations that predict low-stress creep plasticity, which are somewhat different than traditional creep-equation forms, are presented. [ABSTRACT FROM AUTHOR] AB - Copyright of Journal of Engineering Materials & Technology is the property of American Society of Mechanical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Creep KW - PLASTICITY KW - STAINLESS steel KW - STRAINS & stresses (Mechanics) KW - TEMPERATURE N1 - Accession Number: 62171805; Kassner, M. E. 1 Geantil, P. 1 Rosen, R. S. 2; Affiliation: 1: Department of Aerospace and Mechanical Engineering and Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089-1453 2: Defense Nuclear Facilities Safety Board, Washington, DC 20004-2901; Source Info: Apr2011, Vol. 133 Issue 2, p21012.1; Subject Term: METALS -- Creep; Subject Term: PLASTICITY; Subject Term: STAINLESS steel; Subject Term: STRAINS & stresses (Mechanics); Subject Term: TEMPERATURE; NAICS/Industry Codes: 331110 Iron and Steel Mills and Ferroalloy Manufacturing; Number of Pages: 5p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1115/1.4003110 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=62171805&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Kassner, M.E. AU - Geantil, P. AU - Hodge, A.M. AU - Rosen, R.S. T1 - The assessment of the ambient-temperature mechanical properties of ultra-fine-grained Ag with nano-twins using microshear tests JO - Scripta Materialia JF - Scripta Materialia Y1 - 2009/10// VL - 61 IS - 7 M3 - Article SP - 721 EP - 724 SN - 13596462 AB - The mechanical properties of ultra-fine-grained (UFG) 150μm silver interlayers prepared by planar magnetron sputtering were studied using microshear torsion tests. The interlayers have very high ductility in pure shear, comparable to conventional grain sizes, and show a mechanical steady-state. The Hall–Petch behavior at 1.25μm is consistent with other earlier work. The hardening rates (dσ/dε) are substantially higher in the UFG Ag. The saturation stress and strain-rate sensitivity at this stress are identical to coarse-grained silver. [Copyright &y& Elsevier] AB - Copyright of Scripta Materialia is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - METALS -- Mechanical properties KW - COLLOIDAL silver KW - SHEAR (Mechanics) KW - METALS -- Testing KW - DEFORMATIONS (Mechanics) KW - METALS -- Microstructure KW - MAGNETRON sputtering KW - Plastic deformation KW - Silver KW - Ultra-fine-grained microstructure N1 - Accession Number: 43414358; Kassner, M.E. 1; Email Address: Kassner@usc.edu Geantil, P. 1 Hodge, A.M. 1 Rosen, R.S. 2; Affiliation: 1: Department of Aerospace and Mechanical Engineering, University of Southern California, OHE 430, Los Angeles, CA 90089-1453, USA 2: Defense Nuclear Facilities Safety Board, Washington, DC 20004-2901, USA; Source Info: Oct2009, Vol. 61 Issue 7, p721; Subject Term: METALS -- Mechanical properties; Subject Term: COLLOIDAL silver; Subject Term: SHEAR (Mechanics); Subject Term: METALS -- Testing; Subject Term: DEFORMATIONS (Mechanics); Subject Term: METALS -- Microstructure; Subject Term: MAGNETRON sputtering; Author-Supplied Keyword: Plastic deformation; Author-Supplied Keyword: Silver; Author-Supplied Keyword: Ultra-fine-grained microstructure; Number of Pages: 4p; Document Type: Article L3 - 10.1016/j.scriptamat.2009.06.013 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=43414358&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hayes, Troy A. AU - Rosen, Robert S. AU - Kassner, Michael E. T1 - Creep fracture of zirconium alloys JO - Journal of Nuclear Materials JF - Journal of Nuclear Materials Y1 - 2006/07// VL - 353 IS - 1/2 M3 - Article SP - 109 EP - 118 SN - 00223115 AB - Abstract: Theoretical approaches utilized to predict the lifetime of spent nuclear fuel in interim dry storage assumed that diffusion controlled cavity growth controlled the failure time under these conditions. DCCG, however, fails to account for the fact that the failure time is related to the strain rate in Zircaloys according to the Monkman–Grant relationship. This paper will show that constrained cavity growth, which can account for the Monkman–Grant relationship but was not considered in the spent nuclear fuel lifetime prediction models, is more relevant to failure of spent nuclear fuel in dry storage. Contrary to reports in the past, constant stress creep tests performed in this study on Zircaloy-2 suggest that creep cavity nucleation and/or growth occurs prior to tertiary creep. Constant strain rate creep rupture tests on Zircaloy-2 show strong evidence of extensive cavity nucleation and growth near and at the fracture surface, indicating a creep cavitation failure mechanism under these conditions. [Copyright &y& Elsevier] AB - Copyright of Journal of Nuclear Materials is the property of Elsevier Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - NUCLEAR fuels KW - RADIOACTIVE substances KW - METALLIC composites KW - PHYSICAL & theoretical chemistry N1 - Accession Number: 21191370; Hayes, Troy A. 1; Email Address: thayes@exponent.com Rosen, Robert S. 2 Kassner, Michael E. 3; Affiliation: 1: Exponent Failure Analysis Associates, 149 Commonwealth Drive, Menlo Park, CA 94025, USA 2: Defense Nuclear Facilities Safety Board, 625 Indiana Avenue, NW, Suite 700, Washington, DC 20004, USA 3: University of Southern California, Aerospace and Mechanical Engineering Department, Olin Hall 430, Los Angeles, CA 90089, USA; Source Info: Jul2006, Vol. 353 Issue 1/2, p109; Subject Term: NUCLEAR fuels; Subject Term: RADIOACTIVE substances; Subject Term: METALLIC composites; Subject Term: PHYSICAL & theoretical chemistry; NAICS/Industry Codes: 325180 Other Basic Inorganic Chemical Manufacturing; NAICS/Industry Codes: 325189 All other basic inorganic chemical manufacturing; Number of Pages: 10p; Document Type: Article L3 - 10.1016/j.jnucmat.2006.02.093 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21191370&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Plaue, J. AU - Gelis, A. AU - Czerwinski, K. T1 - Actinide Third Phase Formation in 1.1 M TBP/Nitric Acid/Alkane Diluent Systems. JO - Separation Science & Technology JF - Separation Science & Technology Y1 - 2006/07// VL - 41 IS - 10 M3 - Article SP - 2065 EP - 2074 SN - 01496395 AB - Additional information on the organic phase speciation of Np and Pu was obtained in order to further understand the impact on third phase formation. In the Np(VI) extraction system, indications of the presence of a species associated with the absorbance at 1210 nm appears to be consistent with an increased tendency for third phase formation. Attempts to couple this absorption peak to a higher order nitrate species were inconclusive, and further study is required. For Pu(VI), continued evidence has emerged suggesting a role of higher order nitrate species in third phase formation. [ABSTRACT FROM AUTHOR] AB - Copyright of Separation Science & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - ACTINIDE elements KW - NITRIC acid KW - ALKANES KW - SOLUTION (Chemistry) KW - EXTRACTION (Chemistry) KW - ABSORPTION KW - CHEMICAL reactions KW - neptunium KW - plutonium KW - speciation KW - Third phase KW - tri‐n‐butyl phosphate KW - tri‐ n ‐butyl phosphate KW - tri-n-butyl phosphate N1 - Accession Number: 21807395; Plaue, J. 1; Email Address: jplaue@alum.mit.edu Gelis, A. 2 Czerwinski, K. 3; Affiliation: 1: Defense Nuclear Facilities Safety Board*, Washington DC, USA 2: Chemical Engineering Division, Argonne National Laboratory, Argonne, IL, USA 3: Department of Chemistry, University of Nevada, Las Vegas, Nevada, USA; Source Info: 2006, Vol. 41 Issue 10, p2065; Subject Term: ACTINIDE elements; Subject Term: NITRIC acid; Subject Term: ALKANES; Subject Term: SOLUTION (Chemistry); Subject Term: EXTRACTION (Chemistry); Subject Term: ABSORPTION; Subject Term: CHEMICAL reactions; Author-Supplied Keyword: neptunium; Author-Supplied Keyword: plutonium; Author-Supplied Keyword: speciation; Author-Supplied Keyword: Third phase; Author-Supplied Keyword: tri‐n‐butyl phosphate; Author-Supplied Keyword: tri‐ n ‐butyl phosphate; Author-Supplied Keyword: tri-n-butyl phosphate; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; Number of Pages: 9p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1080/01496390600745362 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=21807395&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Plaue, J. AU - Gelis, A. AU - Czerwinski, K. T1 - Plutonium Third Phase Formation in the 30% TBP/Nitric Acid/Hydrogenated Polypropylene Tetramer System. JO - Solvent Extraction & Ion Exchange JF - Solvent Extraction & Ion Exchange Y1 - 2006/05//May/Jun2006 VL - 24 IS - 3 M3 - Article SP - 271 EP - 282 SN - 07366299 AB - A study on plutonium third phase formation in 30% TBP/nitric acid/hydrogenated polypropylene tetramer (HPT) was performed. Characterization studies of HPT indicate its composition to be a mixture of many highly branched alkanes with a volatility close to n ‐undecane. This composition results in about a factor of two better resistance to Pu(IV) third phase formation than dodecane. At 7 M nitric acid in the aqueous phase, the presence of Pu(VI) was observed to substantially reduce the organic phase metal concentration necessary to induce phase splitting in both diluents. Spectroscopic investigation of mixed valence systems also suggest a prominent role for Pu(VI) in the formation of the dense organic phase. Accumulation of Pu(VI) in the heavy phase, as well as certain spectral features, suggest that Pu(VI) is forming a different species, possibly a plutonyl trinitrato, with a strong tendency to form third phase. [ABSTRACT FROM AUTHOR] AB - Copyright of Solvent Extraction & Ion Exchange is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - PLUTONIUM KW - NITRIC acid KW - HYDROGENATION KW - POLYPROPYLENE KW - ALKANES KW - HPT KW - phase splitting KW - Plutonium third phase formation KW - spectroscopic investigation N1 - Accession Number: 20856289; Plaue, J. 1; Email Address: jplaue@alum.mit.edu Gelis, A. 2 Czerwinski, K. 3; Affiliation: 1: Defense Nuclear Facilities Safety Board, Washington, DC, USA 2: Chemical Engineering Division, Argonne National Laboratory, Argonne, IL, USA 3: Department of Chemistry, University of Nevada, Las Vegas, Nevada, USA; Source Info: May/Jun2006, Vol. 24 Issue 3, p271; Subject Term: PLUTONIUM; Subject Term: NITRIC acid; Subject Term: HYDROGENATION; Subject Term: POLYPROPYLENE; Subject Term: ALKANES; Author-Supplied Keyword: HPT; Author-Supplied Keyword: phase splitting; Author-Supplied Keyword: Plutonium third phase formation; Author-Supplied Keyword: spectroscopic investigation; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; NAICS/Industry Codes: 325311 Nitrogenous Fertilizer Manufacturing; NAICS/Industry Codes: 325313 Chemical fertilizer (except potash) manufacturing; NAICS/Industry Codes: 313110 Fiber, Yarn, and Thread Mills; Number of Pages: 12p; Illustrations: 1 Chart, 4 Graphs; Document Type: Article L3 - 10.1080/07366290600646814 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20856289&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Plaue, J. AU - Gelis, A. AU - Czerwinski, K. AU - Thiyagarajan, P. AU - Chiarizia, R. T1 - Small‐Angle Neutron Scattering Study of Plutonium Third Phase Formation in 30% TBP/HNO 3 /Alkane Diluent Systems. JO - Solvent Extraction & Ion Exchange JF - Solvent Extraction & Ion Exchange Y1 - 2006/05//May/Jun2006 VL - 24 IS - 3 M3 - Article SP - 283 EP - 298 SN - 07366299 AB - Third phase formation in the extraction of Pu(IV) nitrate by 30% tri‐ n ‐butyl phosphate (TBP) dissolved in n ‐dodecane or in the highly branched diluent hydrogenated polypropylene tetramer (HPT), which may also be known as 4,4 dipropyl heptane or tétrapropylène hydrogéné, was investigated through small‐angle neutron scattering (SANS) measurements. The SANS data were interpreted using the Baxter model for hard‐spheres with surface adhesion. According to this model, the increase in scattering intensity observed when increasing amounts of Pu(NO 3 ) 4 are extracted into the organic phase, is due to interactions between small reverse micelles containing three to five TBP molecules. In n ‐dodecane, the micelles interact through attractive forces between their polar cores with a potential energy of up to -2.6 k B T. This strong intermicellar attraction leads to organic phase splitting with the separation of most of the solutes of the original organic phase into a distinct phase containing interspersed layers of n ‐dodecane. When HPT is the diluent, the intermicellar attraction energy calculated from the SANS data is much lower, and no third phase formation is observed under comparable chemical conditions. However, when a significant amount of the initial aqueous plutonium is in the form of plutonyl ions, PuO 2 2+ , the critical energy potential is reached even in HPT. A potential explanation of the effect of Pu(VI) involves the formation of a plutonyl trinitrato complex. [ABSTRACT FROM AUTHOR] AB - Copyright of Solvent Extraction & Ion Exchange is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SMALL-angle scattering KW - NEUTRONS KW - PLUTONIUM KW - ALKANES KW - EXTRACTION (Chemistry) KW - NITRATES KW - PHOSPHATES KW - Baxter model KW - HPT KW - Plutonium third phase formation KW - SANS N1 - Accession Number: 20856284; Plaue, J. 1; Email Address: jplaue@alum.mit.edu Gelis, A. 2 Czerwinski, K. 3 Thiyagarajan, P. 4 Chiarizia, R. 5; Affiliation: 1: Defense Nuclear Facilities Safety Board, Washington, DC, USA 2: Chemical Engineering Division, Argonne National Laboratory, Argonne, IL, USA 3: Department of Chemistry, University of Nevada, Las Vegas, Nevada, USA 4: Intense Pulsed Neutron Source, Argonne National Laboratory, Argonne, IL, USA 5: Chemistry Division, Argonne National Laboratory, Argonne, IL, USA; Source Info: May/Jun2006, Vol. 24 Issue 3, p283; Subject Term: SMALL-angle scattering; Subject Term: NEUTRONS; Subject Term: PLUTONIUM; Subject Term: ALKANES; Subject Term: EXTRACTION (Chemistry); Subject Term: NITRATES; Subject Term: PHOSPHATES; Author-Supplied Keyword: Baxter model; Author-Supplied Keyword: HPT; Author-Supplied Keyword: Plutonium third phase formation; Author-Supplied Keyword: SANS; NAICS/Industry Codes: 325110 Petrochemical Manufacturing; Number of Pages: 16p; Illustrations: 3 Charts, 3 Graphs; Document Type: Article L3 - 10.1080/07366290600646970 UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=20856284&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER - TY - JOUR AU - Hadjian, A.H. T1 - Fundamental period and mode shape of layered soil profiles JO - Soil Dynamics & Earthquake Engineering (0267-7261) JF - Soil Dynamics & Earthquake Engineering (0267-7261) Y1 - 2002/10// VL - 22 IS - 9-12 M3 - Article SP - 885 SN - 02677261 AB - The estimation of the fundamental period of soil profiles has been the subject of numerous studies. An extensive evaluation of several procedures by Dobry et al. concluded that both the Simplified Version of the Rayleigh Procedure and the Successive Use of Two-Layer Solution by Madera give errors of less than 10% for all of the 76 representative soil profiles considered in the evaluation. The simplified Rayleigh procedure is iterative and requires an initial estimate of the mode shape. The Madera procedure is based on the solution of a two-layer system, usually obtained from charts. In this paper the solution charts are replaced by approximate relations for implementation on a spreadsheet. Since the Madera procedure calculates only the fundamental period, mode shapes need to be calculated by other means. The Madera procedure is extended to calculate mode shapes and modal participation factors of layered soil profiles. Unlike the simplified Rayleigh procedure , the proposed solution incorporates the different densities of the layers and gives direct results without iterations. The proposed solution can be considered a simpler alternative to the Rayleigh method for shear beams or soil columns. [Copyright &y& Elsevier] AB - Copyright of Soil Dynamics & Earthquake Engineering (0267-7261) is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) KW - SOIL profiles KW - SOIL testing KW - LAYER structure (Solids) KW - Fundamental period KW - Layered soil profile KW - Mode shape KW - Site response N1 - Accession Number: 8621115; Hadjian, A.H. 1; Email Address: asadour@dnfsb.gov; Affiliation: 1: Defense Nuclear Facilities Safety Board, 625 Indiana Ave., NW, #700, Washington, DC 20004, USA; Source Info: Oct2002, Vol. 22 Issue 9-12, p885; Subject Term: SOIL profiles; Subject Term: SOIL testing; Subject Term: LAYER structure (Solids); Author-Supplied Keyword: Fundamental period; Author-Supplied Keyword: Layered soil profile; Author-Supplied Keyword: Mode shape; Author-Supplied Keyword: Site response; NAICS/Industry Codes: 238910 Site Preparation Contractors; NAICS/Industry Codes: 541380 Testing Laboratories; Number of Pages: 7p; Document Type: Article UR - https://auth.lib.unc.edu/ezproxy_auth.php?url=http://search.ebscohost.com/login.aspx?direct=true&db=aph&AN=8621115&site=ehost-live&scope=site DP - EBSCOhost DB - aph ER -