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Displaying 5401 - 5425 of 13218

An Argument for Using Coarse Cements in High-Performance Concretes

April 1, 1999
Author(s)
Dale P. Bentz, C J. Hacker
… degree of hydration become less significant. Thus, in the new generation high-performance concretes, more … ground cements may provide good performance, resulting in substantial energy savings due to a reduction in grinding time. This implies that cement fineness should be …

Mean Recurrence Intervals of Ultimate Wind Loads

July 1, 1998
Author(s)
Emil Simiu, A N. Heckert, T Whalen
… and extreme value climatologists has been focused in the last few decades on estimates of basic windspeeds, … member failure. These efforts have benefited from progress in extreme value theory, notably the development of peaks over threshold methods used in conjunction with the Generalized Pareto Distribution. …

Evaluation of Seismic Performance Parameters

June 1, 1997
Author(s)
Hai S. Lew
… and nonstructural elements and building contents. In the U.S. several groups have proposed performance-based … to produce buildings that will perform during earthquakes in conformance with the objective of design, such as immediate occupancy and collapse prevention. In the design process, the response of structural members and …

Alkali-Silica Reaction and High Performance Concrete

August 1, 1995
Author(s)
Chiara F. Ferraris
… Damage due to alkali-silica reaction (ASR) in concrete is a phenomenon that was first recognized in the U.S. since 1940 and has since been observed in many countries. Despite numerous studies published, the … building technology, alkali-silica reaction, high performance …

Fiscal Year 2023 Cybersecurity and Privacy Annual Report

May 20, 2024
Author(s)
Patrick D. O'Reilly, Kristina Rigopoulos
… 1, 2022, through September 30, 2023 –the NIST Information Technology Laboratory (ITL) Cybersecurity and Privacy Program … responded to numerous challenges and opportunities in security and privacy. This Annual Report highlights the FY … standards; research and practical applications in several key priority areas (e.g., Post Quantum …

Determination of D9-THC, THCA, D8-THC, and total D9-THC in 53 Smokable Hemp Plant Products by Liquid Chromatography and Photodiode Array Detection

January 8, 2024
Author(s)
Walter Brent Wilson, Aaron Urbas, MARYAM ABDUL-RAHMAN, Arianna Romares, Ewelina Mistek-Morabito
… has led to an estimated value of $824M for hemp production in the United States (US) in 2021 with an approximately 76% of it focused on floral … In response, the National Institute of Standards and Technology (NIST) have been developing and evaluating … Determination of D9-THC, THCA, D8-THC, and total D9-THC in 53 Smokable Hemp Plant Products by Liquid Chromatography …

Workshop on Reliability Issues in Nanomaterials

August 1, 2005
Author(s)
Robert Keller, David T. Read, Roop L. Mahajan
… The Workshop on Reliability Issues in Nanomaterials was held at the Boulder Laboratories of the National Institute of Standards and Technology (NIST) on August 17-19, 2004. It was designed to … lead to re-design that is more reliable, and to improved manufacturing. The goal of accurate performance and lifetime …

Advanced Fire Detection

August 10, 1997
Author(s)
E Braun
… e.g., ionization, optical, temperature, or CO, etc. In the past, the fire or smoke sources used in these test methods were optimized for a unique fire or … based on specific combinations of sensors that can help in distinguishing a real fire source from a false reading. …
Displaying 5401 - 5425 of 13218
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