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Displaying records 21 to 30 of 789 records.
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21. Certification of Total Arsenic in Blood and Urine Standard Reference Materials by Radiochemical Neutron Activation Analysis and Inductively Coupled Plasma - Mass Spectrometry
Topic: Chemistry
Published: 3/1/2014
Authors: Rick L Paul, William C Davis, Karen E Murphy, Colleen E Bryan, Lee Lijian Yu, William F Guthrie, Dennis D Leber, Thomas W Vetter
Abstract: A newly developed procedure for determination of arsenic by radiochemical neutron activation analysis was used to measure arsenic in SRM 955c Toxic Elements in Caprine Blood and SRM 2668 Toxic Elements in Frozen Human Urine for the purpose of providi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909821

22. Effect of wire configuration and point defects on the conductance of gold nano-conductors
Topic: Chemistry
Published: 2/28/2014
Authors: Shmuel Barzilai, Francesca M Tavazza, Lyle E Levine
Abstract: Gold nanowire (NW) chains are considered a good candidate for nanoelectronics devices because they exhibit remarkable structural and electrical properties. One promising nano-conductor candidate is called ,Hexa1Š. This NW configuration was found to ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913936

23. Filter Material Effects on Particle Absorption Characteristics
Topic: Chemistry
Published: 2/10/2014
Authors: Cary Presser, Joseph M Conny, Ashot Nazarian
Abstract: The absorption coefficient and mass specific absorption cross section were determined for nigrosin-laden quartz, Teflon, and polycarbonate filters in inert surroundings at different steady-state temperatures and particle mass loadings. The objective ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912531

24. A comparison of literature models for the oxidation of normal heptane
Topic: Chemistry
Published: 2/1/2014
Authors: David A Sheen, Wing Tsang
Abstract: The development of detailed chemical kinetic models has proceeded unabated since the pioneering work of Dixon-Lewis and coworkers forty-five years ago. In that time, computational power has increased ten million-fold, and yet, we do not have a conse ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912741

25. Hybrid-Phospholipid Bilayer Coatings for Separations of Cationic Proteins in Capillary Zone Electrophoresis
Topic: Chemistry
Published: 1/20/2014
Authors: Elyssia S. Gallagher, Seid M Adem, Leonard K. Bright, Elisabeth Mansfield, Craig A. Aspinwall
Abstract: Separations of proteins and peptides in capillary zone electrophoresis suffer from non-specific adsorption of the analytes to the capillary surface. Semi-permanent phospholipid bilayers have been used to minimize adsorption, but must be regenerated ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914121

26. Probing the intracellular glutathione redox potential using in-cell NMR spectroscopy
Topic: Chemistry
Published: 1/2/2014
Authors: Steve Y. Rhieu, Aaron A Urbas, Daniel W Bearden, John P Marino, Vytautas Reipa, Katrice A Lippa
Abstract: Non-invasive and real-time analysis of cellular redox processes has been greatly hampered by lack of suitable measurement techniques. Here we describe an in-cell nuclear magnetic resonance (NMR)-based method for measuring the intracellular glutathion ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914505

27. Nondestructive Testing (NDT) and Sensor Technology for Service Life Modeling of New and Existing Concrete Structures
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7974
Topic: Chemistry
Published: 12/18/2013
Authors: Kenneth Alan Snyder, Li Piin Sung, Geraldine S Cheok
Abstract: Nondestructive test (NDT) methods and sensor technologies are evaluated in the context of providing input parameters to service life prediction models for reinforced concrete structures. Relevant NDT methods and sensors are identified that are based ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914232

28. Forensic Analysis Methodology for Thermal and Chemical Characterization of Homemade Explosives
Topic: Chemistry
Published: 11/24/2013
Authors: Ashot Nazarian, Cary Presser
Abstract: Forensic identification of homemade explosives is critical for determining the origin of the explosive materials and precursors, and formulation procedures. Normally, the forensic examination of the pre- and post-blast physical evidence lacks specif ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913871

29. Fluctuation Enhanced Sensing (FES) with a Nanostructured Semiconducting Metal Oxide Film for Gas Detection and Classification
Topic: Chemistry
Published: 10/31/2013
Authors: Bulent Ayhan, Chiman Kwan, Jin Zhou, Laszlo Kish, Kurt D Benkstein, Phillip H. Rogers, Stephen Semancik
Abstract: The feasibility of fluctuation-enhanced sensing (FES) for the detection and classification of different gases by using a single microsensor has been experimentally demonstrated. A nanostructured semiconducting metal oxide film has been used as a chem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912530

30. Connection between thermodynamics and dynamics of simple fluids in highly attractive pores
Topic: Chemistry
Published: 10/25/2013
Authors: William P Krekelberg, Vincent K Shen, Daniel W Siderius, Thomas M. Truskett, Jeffrey R. Errington
Abstract: We investigate the structural and diffusive dynamics properties of a model fluid in highly-absorptive cylindrical pores. At subcritical temperatures, self diffusion displays three distinct regimes as a function of average pore density ρ: 1) a de ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914566



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