Publications Portal

You searched on:
Topic Area: Chemistry

Your search results exceeded 1,000 records. Please refine your search and try again.
Displaying records 21 to 30 of 1000 records.
Resort by: Date / Title

21. Best Practices Guide for High-Volume Fly Ash Concretes: Assuring Properties and Performance
Series: Technical Note (NIST TN)
Report Number: 1812
Topic: Chemistry
Published: 9/18/2013
Authors: Dale P Bentz, Chiara F Ferraris, Kenneth Alan Snyder
Abstract: A best practices guide is developed from a synthesis of recent research on high-volume fly ash (HVFA) concrete mixtures. These best practices can be applied by the concrete construction industry to achieve desired properties and ensure the (high) per ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914225

22. Viscosity Modifiers to Enhance Early Age Performance and Long Term Durability of Concrete
Topic: Chemistry
Published: 9/1/2013
Authors: Dale P Bentz, Kenneth Alan Snyder, Max A Peltz, K H Obla, Haejin Kim
Abstract: The service life distribution of concrete structures typically follows a ,bathtubŠ-shaped function, with a finite probability of early-age failures being followed by a life with a relative low probability of failure that ultimately increases dramatic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909952

23. An Assessment of 25-Hydroxyvitamin D Measurements in Comparability Studies Conducted by the Vitamin D Metabolites Quality Assurance Program
Topic: Chemistry
Published: 8/12/2013
Authors: Mary Bedner, Katrice A Lippa, Susan Shu Cheng Tai
Abstract: Background: The National Institute of Standards and Technology (NIST), in collaboration with the National Institutes of Health Office of Dietary Supplements, established the first accuracy-based program for improving the comparability of vitamin D me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913070

24. Ternary Blends for Economical and Environmentally Friendly Concretes
Topic: Chemistry
Published: 7/31/2013
Authors: Dale P Bentz, Jussara Tanesi, Ahmad Ardani
Abstract: As sustainability moves to the forefront of trends in construction, concrete mixture proportions must be adjusted and adapted to a new set of economic and environmental demands. While high-volume fly ash concretes have been investigated extensively s ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913559

25. SRM 2492 RHEOMETER USER GUIDE FOR GAP VERIFICATION AND TEST PROTOCOL
Topic: Chemistry
Published: 7/17/2013
Authors: Chiara F Ferraris, Jussara Tanesi
Abstract: N/A
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914092

26. Ab initio study of the mechanical and the transport properties of pure and contaminated silver nanowires
Topic: Chemistry
Published: 7/12/2013
Authors: Shmuel Barzilai, Francesca M Tavazza, Lyle E Levine
Abstract: The conductance and mechanical properties of pure and contaminated silver nanowires were studied using density functional theory (DFT) calculations. Several nanowires containing O2 on their surface were elongated along two different directions. All o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913340

27. Formation of Disk- and Stacked Disk-Like Self-Assembled Morphologies from Cholesterol Functionalized Aliphatic Polycarbonate Containing Amphiphilic Diblock Copolymers
Topic: Chemistry
Published: 6/10/2013
Authors: Vivek M Prabhu, Shrinivas Venkataraman , Ashlynn Lee, Yi Yan Yang, James Hedrick, Hareem Maune
Abstract: In this study, a cholesterol functionalized aliphatic cyclic carbonate monomer, 2-(5-methyl-2-oxo-1,3-dioxane-5-carboxyloyloxy)ethyl carbamate (MTC-Chol) was synthesized. The organo-catalytic ring opening polymerization of MTC-Chol was accomplished ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912990

28. Automatic Clustering of Multipath Arrivals in Radio-Frequency Channels using Kurtosis
Topic: Chemistry
Published: 6/9/2013
Author: Camillo A Gentile
Abstract: In wireless propagation, the multipath arrivals of a transmitted signal appear clustered at the receiver. Because the notion of clusters tends to be intuitive rather than well-defined, cluster identification in channel modeling has traditionally ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912445

29. Surface mediated assembly of small, metastable gold nanoclusters
Topic: Chemistry
Published: 5/27/2013
Authors: John M Pettibone, William A Osborn, Konrad Rykaczewski, Albert A. Talin, John E Bonevich, Jeffrey W Hudgens
Abstract: The unique properties of metallic nanoclusters are attractive for numerous commercial and industrial applications but are generally less stable than nanocrystals. Thus, developing methodologies for stabilizing nanoclusters and retaining their enhance ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909387

30. Standard Reference Materials for Dietary Supplement Analysis
Topic: Chemistry
Published: 5/24/2013
Authors: Catherine A Rimmer, Joseph M Betz, Paul M Coates, Katherine E Sharpless, Stephen A Wise
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912493