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Displaying 23051 - 23075 of 143816

COMPUTATIONAL MODELING OF HYDROGEN-ASSISTED FATIGUE CRACK GROWTH IN PIPELINE STEELS

July 31, 2017
Author(s)
Andrew Slifka, Robert L. Amaro, Elizabeth S. Drexler, Devin T. O'Connor, Benjamin E. Long
In this work we further develop a model to predict hydrogen-assisted fatigue crack growth in steel pipelines and pressure vessels. This implementation of the model is informed by finite element code, which uses an elastic-plastic constitutive model in

Using DITA to Create Security Configuration Checklists

July 31, 2017
Author(s)
Joshua Lubell
Many software tools use security configuration checklists expressed in the Extensible Configuration Checklist Description Format (XCCDF) to monitor computers and other information technology products for compliance with security policies. But XCCDF syntax

Performance Monitoring of Chilled Water Distribution Systems using HVAC-Cx

July 30, 2017
Author(s)
Natascha S. Milesi-Ferretti, Michael A. Galler, Steven T. Bushby
Automated commissioning tools facilitate an ongoing commissioning process to improve occupant comfort, ensure the persistence of correct system operation, and reduce energy consumption. These tools decrease the time and the skill level required to carry

An Analysis of Vulnerability Trends, 2008 - 2016

July 29, 2017
Author(s)
David R. Kuhn, Mohammad Raunak, Raghu N. Kacker
This analysis reviews trends within the different vulnerability types and subsidiary weaknesses, with a goal of identifying practices that may have the strongest impact on reducing vulnerabilities.

Dynamical Transition of Collective Motions in Dry Proteins

July 28, 2017
Author(s)
Zhuo Liu, Juan Huang, Madhu Sudan Tyagi, Hugh O'Neill, Qiu Zhang, Eugene Mamontov, NItin Jain, Yujie Wang, Jie Zhang, Jeremy C. Smith, Liang Hong
Water is widely assumed to be essential for protein dynamics and function. In particular, the well-documented "dynamical" transition at 200 K detected in hydrogenated proteins by incoherent neutron scattering, at which the protein changes from a rigid, non

Measurement of the Planck constant at the National Institute of Standards and Technology from 2015 to 2017

July 28, 2017
Author(s)
Darine El Haddad, Frank Seifert, Leon Chao, Antonio Possolo, David B. Newell, Jon R. Pratt, Carl J. Williams, Stephan Schlamminger
Researchers at the National Institute of Standards and Technology(NIST) estimate the value of the Planck constant as h = 6.62606994(10) x 10^-34 Js, hence with relative standard uncertainty 15.3 x 10^-9. This measurement result is based on over 17,000

Nanoscopic Dynamics of Bicontinuous Microemulsions: Effect of Membrane-Associated Protein

July 28, 2017
Author(s)
V. K. Sharma, Douglas G. Hayes, Volker S. Urban, Hugh M. O'Neill, Madhu Sudan Tyagi, Eugene Mamontov
Bicontinous Microemulsions (BυE)generally consist of nanodomains formed by surfactant in a mixture of water and oil at nearly equal proportions and are potential candidates for the solubilization and purification of membrane proteins. Here we present the
Displaying 23051 - 23075 of 143816
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