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1. Measurement of pHT Values of Tris Buffers in Synthetic Seawater at Varying Mole Ratios of Tris:Tris·HCl
Topic: Chemistry
Published: 5/20/2014
Author: Kenneth W Pratt
Abstract: Measurements of total pH, pHT, in electrochemical cells without transference are reported for 2 amino-2-hydroxymethyl 1,3-propanediol (,Tris‰) buffers in synthetic seawater (SSW) of salinity 35 at three molality ratios of Tris to Tris,HCl: 0.03:0.05, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914253

2. Recent advances in vacuum sciences and applications
Topic: Chemistry
Published: 4/9/2014
Authors: Miran Mozetic, Kostya Ostrikov, David Ruzic, Davide Curreli, Uros Cvelbar, Alenka Vesel, Gregor Primc, Manfred Leisch, Karl Jousten, Oleg Malyshev, Jay H Hendricks, laszlo Kover, Alberto Tagliaferro, O Conde, Antonio Silvestre, J Giapintzakis, M Buljan, N Radi?, G Dra?i?, S Bernstorff, H Biederman, O Kyli?n, J Hanu?, S Milo?evi?, A Galtayries, P Dietrich, W Unger, K Stana-Kleinschek, A Drmota?Petri?, J J Pireaux, J W Rogers, M Anderle, M Lehocky, V Sedlarik
Abstract: Recent advances in vacuum sciences and applications are reviewed. Novel optical interferometer cavity devices enable pressure measurements with ppm accuracy. Innovative dynamic vacuum standard allows for pressure measurements with temporal resolution ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914906

3. Electrical Testing of Cement-Based Materials: Role of Testing Techniques, Sample Conditioning, and Accelerated Curing
Topic: Chemistry
Published: 4/1/2014
Authors: Robert Spragg, Yiwen Bu, Kenneth Alan Snyder, Dale P Bentz, Jason Weiss
Abstract: These projects examined the potential for using electrical testing on concrete as a potential surrogate for obtaining information on ion and fluid transport. Electrical measurements are particularly attractive for use in quality control as they are e ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914978

4. Characterization of Emerging Ambient Pressure Mass Spectrometric Techniques using Time-of-Flight Secondary Ion Mass Spectrometry
Topic: Chemistry
Published: 3/28/2014
Authors: Shinichiro Muramoto, Thomas P Forbes, Matthew E Staymates, John G Gillen
Abstract: Time-of-flight secondary ion mass spectrometry (ToF-SIMS) was used to characterize the desorption performance of two emerging ambient ionization mass spectrometry (MS) sources; desorption electrospray ionization (DESI) and low temperature plasma (LTP ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915103

5. A Methodology for Developing Authentication Assurance Level Taxonomy for Smart Card-based Identity Verification
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7849
Topic: Chemistry
Published: 3/5/2014
Author: Ramaswamy Chandramouli
Abstract: Smart cards (smart identity tokens) are now being extensively deployed for identity verification for controlling access to Information Technology (IT) resources as well as physical resources. Depending upon the sensitivity of the resources and the ri ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911836

6. 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

7. Accelerated and Natural Carbonation of Concretes with Internal Curing and Shrinkage/Viscosity Modifiers
Topic: Chemistry
Published: 1/5/2014
Authors: Alejandro Duran-Herrera, Jose Manuel Mendoza-Rangel, Edgar de los Santos Rodriguez, Francisco Vazquez, P Valdez, Dale P Bentz
Abstract: In many parts of the world, corrosion of reinforcing steel in concrete induced by carbonation of the concrete continues to be a major durability concern. This paper investigates the accelerated and natural carbonation resistance of a set of 7 concret ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914100

8. 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

9. Steering Acoustically Propelled Nanowire Motors towards Cells in a Biologically Compatible Environment using Magnetic Fields
Topic: Chemistry
Published: 12/10/2013
Authors: Suzanne Ahmed, Wei Wang, Lamar O. Mair, Robert D. Fraleigh, Sixing Li, Luz Angelica Castro, Mauricio Hoyos, Tony Jun Huang, Thomas E. Mallouk
Abstract: The recent discovery of fuel-free propulsion of nanomotors using acoustic energy has provided a new avenue for using nanomotors in biocompatible media. Crucial to the application of nanomotors in biosensing and biomedical applications is the ability ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914385

10. Performance Criteria For an ASTM XRF Standard Test Method For Chemical Analysis of Hydraulic Cements: Inter-Laboratory Study Cements E and F
Series: Technical Note (NIST TN)
Report Number: 1815
Topic: Chemistry
Published: 12/6/2013
Author: Paul E Stutzman
Abstract: Bulk oxide determinations from a pair of portland cements provides the basis for calculation precision and accuracy values for X-ray fluorescence (XRF) analysis for both the fused glass bead and the pressed powder sample preparation. This report is ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914657



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