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Displaying 22276 - 22300 of 73742

Fatigue Flaw NDE Reference Standard Development - Phase I Feasibility Study

November 1, 2012
Author(s)
Mark D. Richards, Joseph D. McColskey, Dash Weeks
A feasibility study was performed to evaluate a novel method of accurately fatigue cracking steel plates to generate fatigue proposed fatigue crack reference standards. Fatigue cracks were introduced into low carbon steel reference plates in which the

Giant piezoelectricity in PMN-PT thin films: Beyond PZT

November 1, 2012
Author(s)
S. H. Baek, M. S. Rzchowski, Vladimir Aksyuk
Micro-electromechanical systems (MEMS) incorporating piezoelectric layers provide active transduction between electrical and mechanical energy, which enables highly sensitive sensors and low-voltage driven actuators surpassing the passive operation of

Indoor Air Quality Analyses of Commercial Reference Buildings

November 1, 2012
Author(s)
Lisa C. Ng, Amy Musser, Andrew K. Persily, Steven J. Emmerich
Sixteen commercial reference buildings were created in the multizone airflow and contaminant transport program CONTAM in order to support airflow and indoor air quality (IAQ) analyses, which are not possible using the existing EnergyPlus input files for

Microwave Behavior of polymer bonded Iron oxide nanoparticles

November 1, 2012
Author(s)
Pavel Kabos, A Caprile, Coisson Marco, F Fiorillo, O M. Manu, E. S. Olivetti, M. A. Olariu, Pasquale Massimo, V. A. Scarlatache
Samples composed of a polymer matrix were loaded with different fractions from 0 to 30% of Fe oxide magnetic nanoparticles with an average size ranging from 50 to 25 nm. The permittivity and permeability of the composites were determined upon a very wide

OpenADR Advances

November 1, 2012
Author(s)
David G. Holmberg, Girish Ghatikar, Ed Koch, Jim Boch
One important goal for the advancement of smart grid deployments is to enable buildings to dynamically respond to the supply of electricity. Buildings should respond to grid event and price signals in order to manage peak demands on the electric grid and

Remote sensing of chiral signatures on Mars

November 1, 2012
Author(s)
William Sparks, James H. Hough, Thomas Germer, Frank Robb, Ludmilla Kolokolova
We describe circular polarization as a remote sensing diagnostic of chiral signatures which may be applied to Mars. The remarkable phenomenon of homochirality provides a unique biosignature which can be amenable to remote sensing through circular

Solution Conformations of Prototype Foamy Virus Integrase and Its Stable Synaptic Complex with U5 Viral DNA

November 1, 2012
Author(s)
Kushol Gupta, Joseph E. Curtis, Susan N. Krueger, Young Hwang, Peter Cherepanov, Frederic Bushman, Gregory D. Van Duyne
The recently determined crystal structures of prototype foamy virus integrase (PFV IN) in complex with viral DNA and target DNA reveal the first high-resolution insights into the nucleoprotein intermediates involved in retroviral integration. Using small

The Need for a Robust, Precise Time and Frequency Alternative to GNSS

November 1, 2012
Author(s)
Michael A. Lombardi, Mitch Narins, Per Enge, Ben Peterson, Sherman Lo, Yu-Hsuan Chen, Dennis Akos
Positioning, Navigation, and Timing (PNT) services are key enablers of both essential safety and security applications and economically beneficial capacity and efficiency applications worldwide. Whether users are ground-based, sea-based or in the air

Towards Data Format Standardization for X-ray Absorption Spectroscopy

November 1, 2012
Author(s)
Bruce Ravel, J. R. Hester, V. A. Sole, M. Newville
A working group on data format standardization for X-ray Absorption Spectroscopy has recently formed under the auspices of International X-ray Absorption Society and the XAFS Commission of the IUCr. This group of beamline scientists and XAS ractitioners

A Study on Safety: Highlights from Workshop on Ambulance Patient Compartments

October 31, 2012
Author(s)
Jennifer L. Marshall, Yung-Tsun T. Lee
In 2010, there were more than 250 U.S. ambulance crashes that were reported in the news media [Ballam 2011]. During such accidents, emergency medical technicians (EMTs) who ride in the ambulance patient compartment while caring for patients are at high

Initial testing of a Si:As blocked-impurity-band (BIB) trap detector

October 31, 2012
Author(s)
Solomon I. Woods, Simon G. Kaplan, Timothy M. Jung, Adriaan C. Carter, James E. Proctor
We discuss the design, construction, and initial test results of a Si:As blocked-impurity-band (BIB) trap detector. The trap consists of two rectangular BIB devices configured in a v-shaped geometry. This trapping geometry is designed to ideally yield a
Displaying 22276 - 22300 of 73742
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