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61. Identifying improved standardized tests for measuring cement particle size and surface area
Topic: Chemistry
Published: 4/1/2013
Authors: Chiara F Ferraris, Edward Joseph Garboczi
Abstract: The Blaine fineness (Blaine) of a cement powder is a single parameter that is meant to characterize the specific surface area of a cement, and is assumed to be linked to physical and mechanical properties such as strength, setting time, and rheology. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912509

62. NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Summer 2012 Comparability Study (Exercise 6)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7895
Topic: Chemistry
Published: 3/18/2013
Authors: Katrice A Lippa, Mary Bedner
Abstract: The National Institute of Standards and Technology (NIST) recently established a Vitamin D Metabolites Quality Assurance Program (VitDQAP) in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements. Participants in t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913008

63. NIST/NIH Vitamin D Metabolites Quality Assurance Program Report of Participant Results: Winter 2012 Comparability Study (Exercise 5)
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7894
Topic: Chemistry
Published: 3/18/2013
Authors: Mary Bedner, Katrice A Lippa, Susan Shu Cheng Tai
Abstract: The National Institute of Standards and Technology (NIST) has established a Vitamin D Metabolites Quality Assurance Program (VitDQAP) in collaboration with the National Institutes of Health (NIH) Office of Dietary Supplements. Participants in the fi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913007

64. Alkali-Silica Reaction Degradation of Nuclear Power Plant Concrete Structures: A Scoping Study
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7937
Topic: Chemistry
Published: 3/11/2013
Authors: Kenneth Alan Snyder, Hai Sang Lew
Abstract: Alkali-silica reaction (ASR) is a concrete degradation phenomenon in which the alkalis that are typically found in concrete react with certain amorphous or micro-crystalline siliceous phases in the aggregate and, in the presence of moisture, form ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913633

65. Hydrated phases and pore solution composition in cement-solidified saltstone waste forms
Topic: Chemistry
Published: 3/8/2013
Authors: Kenneth Alan Snyder, Paul E Stutzman, Jacob Philip, David W. Esh
Abstract: The mineral phases and pore solution composition of hydrated cement-solidified saltstone waste forms are quantified using thermogravimetric analysis, quantitative X-ray diffraction, and inductively-coupled plasma. The results suggest that, after 6 m ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912681

66. Towards Discrete Axial p-n Junction Nanowire LEDs Grown by Plasma-Assisted MBE
Topic: Chemistry
Published: 3/6/2013
Author: Matthew David Brubaker
Abstract: In this paper we investigate axial p-n junction GaN nanowires grown by plasma-assisted MBE, with particular attention to the effect of Mg doping on the device characteristics of individual nanowire LEDs. We observe that single-nanowire LEDs produce ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911884

67. Use of the Grand Canonical Transition-Matrix Monte Carlo Method to Model Gas Adsorption in Porous Materials
Topic: Chemistry
Published: 2/21/2013
Authors: Daniel W Siderius, Vincent K Shen
Abstract: We present grand canonical transition-matrix Monte Carlo (GC-TMMC) as an efficient method for simulating gas adsorption processes, with particular emphasis on subcritical gas adsorption in which capillary phase transitions are present. As in other a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912491

68. Measurement Science Needs for the Expanded Use of Green Concrete: Workshop Summary Report
Series: Technical Note (NIST TN)
Report Number: 1783
Topic: Chemistry
Published: 2/6/2013
Authors: Kenneth Alan Snyder, Dale P Bentz, Jeffrey W Bullard, Chiara F Ferraris, Nicos Martys, Paul E Stutzman
Abstract: In July 2012, NIST conducted the Green Concrete Workshop to bring together stakeholders from the concrete construction industry and identify critical needs for the expanded use of industrial by- product materials, such as fly ash and slag, in conc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913076

69. Improving Concrete Bridge Decks with Internal Curing
Topic: Chemistry
Published: 2/1/2013
Authors: Jason Weiss, Dale P Bentz, Carmelo DiBella
Abstract: Transportation agencies strive to provide durable, long lasting concrete bridge decks. While high performance concrete is frequently desired due to its resistance to chloride ingress and corrosion, these mixtures are often accompanied with an increa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909651

70. To Predict Vibrational Spectra, Are Anharmonic Calculations Worthwhile?
Topic: Chemistry
Published: 1/22/2013
Authors: Ruth Lafuente Jacobsen, Karl K Irikura, Russell D Johnson III, Raghu N Kacker
Abstract: Anharmonic calculations using vibrational perturbation theory are known to provide near-spectroscopic accuracy when combined with high-level ab initio potential energy functions. However, performance with economical, popular electronic structure meth ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911024



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