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Displaying 25476 - 25500 of 74179

Geographical variation of Persistent Organic Pollutants in eggs of threatened loggerhead sea turtles (Caretta caretta) from Southeastern USA

April 4, 2011
Author(s)
Jennifer M. Lynch, Juan Alava, Jeanette Wyneken, Larry Crowder, Geoffrey Scott, John R. Kucklick
Persistent organic pollutants (POPs) are a recognized man-made threat to sea turtle populations, but the uncertainty surrounding exposure and sensitivity of sea turtles to contaminants is great and makes decision making difficult for conservation managers

NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 2 - Lite Edition Version 2

April 4, 2011
Author(s)
Kenneth G. Kroenlein, Chris D. Muzny, Vladimir Diky, Robert D. Chirico, Joe W. Magee, Ilmutdin M. Abdulagatov, Michael D. Frenkel
This NIST standard reference web subscription database provides access to more than 50 thermophysical and thermochemical property data and their uncertainties, critically evaluated for 150 commonly-used pure chemical compounds. The majority of these data

NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2

April 4, 2011
Author(s)
Kenneth G. Kroenlein, Chris D. Muzny, Andrei F. Kazakov, Vladimir Diky, Robert D. Chirico, Joe W. Magee, Ilmutdin M. Abdulagatov, Michael D. Frenkel
This NIST standard reference web subscription database provides access to more than 50 thermophysical and thermochemical property data and their uncertainties, critically evaluated for more than 23,000 pure chemical compounds. The majority of these data

Research Directions in Security Metrics

April 4, 2011
Author(s)
Wayne Jansen
More than 100 years ago, Lord Kelvin observed that measurement is vital to deep knowledge and understanding in physical science. During the last few decades, researchers have made various attempts to develop measures and systems of measurement for computer

Superconformal Ni Electrodeposition using 2-Mercaptobenzimidazole

April 4, 2011
Author(s)
Chang H. Lee, John E. Bonevich, Ugo Bertocci, Kristen L. Steffens, Thomas P. Moffat
Ni superconformal filling of sub-micrometer trenches is demonstrated using a Watts bath containing an inhibitor 2-mercaptobenzimidazole (MBI). Hysteretic voltammetry marks the breakdown of the MBI-induced passive-state coincident with the onset of Ni

Test Structure Fundamentals

April 4, 2011
Author(s)
Richard A. Allen
Test structures are critical tools for semiconductor manufacturers, allowing for understanding of the process and individual circuit elements that cannot be acquired from measurements of the circuits, which can have billions of transistors and other

A Major Role for Non-Enzymatic Antioxidant Processes in the Radioresistance of Halobacterium salinarum

April 1, 2011
Author(s)
M Miral Dizdar, Pawel Jaruga, Courtney K. Robinson, Kim Webb, Amardeep Kaur, Nitin S. Baliga, Allen Place, Jocelyne DiRuggiero
Oxidative stress occurs when the generation of reactive oxygen species (ROS) exceeds the capacity of the cell’s endogenous systems to neutralize them. We analyzed the oxidative stress responses and cellular damage of the archaeon Halobacterium salinarum

After the Alarm Sounds: How We Got Here, Where We Are, and Where We Should Go

April 1, 2011
Author(s)
Jason D. Averill, Erica D. Kuligowski, Richard D. Peacock
This article reviews the history of egress design and code requirements in the United States, describes the current state-of-the-art in egress design and modeling, and offers a strawman research agenda for future egress research.

An Engineer Grapples with Sustainable Manufacturing

April 1, 2011
Author(s)
Vijay Srinivasan
A personal view by the author of how, as a research engineer and manager, first in the private sector and now in government service, he witnessed the emergence of a compelling case for sustainable manufacturing and also gained several important insights

Humic Acid-Mediated Silver Nanoparticle Formation Under Environmentally Relevant Conditions

April 1, 2011
Author(s)
Nelson Akaighe, Robert I. MacCuspie, Divina A. Navarro, Diana S. Aga, Sarbajit Banerjee, Mary Sohn, Virender K. Sharma
The formation of silver nanoparticles (AgNPs) via reduction of silver ions (Ag+) in the presence of humic acids (HAs) under various environmentally relevant conditions is described. HAs tested were from Suwannee River (SUW), and samples of three sediment

Measuring Step Gauges Using the NIST M48 CMM

April 1, 2011
Author(s)
John R. Stoup, Bryon S. Faust
The Moore M48 coordinate measuring machine (CMM) has provided NIST with flexible measurement capabilities for many years. The machine’s state of the art performance was further improved following the move of the machine into the new Advanced Measurement

Neutron Scattering and Spectroscopic Studies of Hydrogen Adsorption in Cr 3 (BTC) 2 - A Metal-Organic Framework with Exposed Cr 2+ Sites

April 1, 2011
Author(s)
Kenji Sumida, Jae-Hyuk Her, Mircea Dinca, Leslie J. Murray, Jennifer M. Schloss, Christopher J. Pierce, Benjamin A. Thompson, Stephen A. FitzGerald, Craig Brown, Jeffrey R. Long
Microporous metal-organic frameworks possessing exposed metal cation sites on the pore surface are of particular interest for high-density H 2 storage at ambient temperatures, owing to the potential for H 2 binding at the appropriate isosteric heat of

NIST Workshop on Ontology Evaluation (NISTIR 7774)

April 1, 2011
Author(s)
Ram D. Sriram, Conrad E. Bock, Fabian M. Neuhaus, Evan K. Wallace, Mary C. Brady, Mark Musen, Joanne Luciano
The National Institute for Standards and Technology sponsored a workshop in October, 2007, on the subject of ontology evaluation. An international group of invited experts met for two days to discuss problems in measuring ontology quality. The workshop

Onset of Morphological Instability in Two Binary Liquid Layers

April 1, 2011
Author(s)
Geoffrey B. McFadden, Sam R. Coriell, Aaron Lott
We consider the linear stability of a horizontal fluid bilayer subject to vertical heating. The two layers consist of a binary fluid that has undergone a phase transition, resulting in a horizontal interphase boundary between two phases with different

Performance of New and Aged Residential Fire Smoke Detectors

April 1, 2011
Author(s)
Jason D. Averill, Richard G. Gann, William F. Guthrie, Daniel Murphy
As part of the Consumer Product Safety Commission (CPSC) technical staff program to determine the effects of emissions from imported drywall on residential electrical, gas distribution, and fire safety components, the National Institute of Standards and

Primary Calibration of Accelerometers by Optical Methods, NIST and USAF

April 1, 2011
Author(s)
Beverly F. Payne, Jerry Steffen
This paper describes ongoing efforts to provide high quality calibration of accelerometers by NIST for military and civilian labs. Traditionally the approach is the calibration of reference accelerometers by NIST for labs requiring calibrations with the
Displaying 25476 - 25500 of 74179
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