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51. 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

52. 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

53. Sensors and Monitoring to Assess Grout and Vault Behavior for Performance Assessments
Topic: Chemistry
Published: 8/12/2013
Authors: Kenneth Alan Snyder, Jason Weiss
Abstract: To support performance assessment (PA) of waste vaults and grout monoliths, the National Institute of Standards and Technology (NIST) has performed a preliminary evaluation of the state-of-the-art of sensors, nondestructive evaluation methods, and an ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912401

54. 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

55. 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

56. 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

57. Trace water vapor analysis in specialty gases: sensor and spectroscopic approaches
Topic: Chemistry
Published: 7/1/2013
Authors: Kristine A Bertness, Mark W. Raynor, Kevin C Cossel, Florian B. Adler, Jun Ye
Abstract: The analysis of water vapor impurity is important in a number of specialty gas applications. However the main driver for the development and advancement of trace H^u2^O analysis techniques has been the microelectronics industry. The International ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911233

58. 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

59. Hydrated Phases in Blended Cement Systems and Synthetic Saltstone Grouts
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7947
Topic: Chemistry
Published: 6/10/2013
Authors: Kenneth Alan Snyder, Paul E Stutzman
Abstract: A blended binder system (10 % portland cement, 45 % fly ash, and 45 % slag) is characterized as part of a broader study of its long-term effectiveness in stabilizing treated salt waste at the Savannah River Site. The binder system is reproduced in t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914010

60. 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



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