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Displaying 27201 - 27225 of 73929

Water based Polyurethane Graphene Oxide Nanocomposites

March 3, 2010
Author(s)
Coralie Bernard, Tinh Nguyen, Bastien T. Pellegrin, Mat Celina, Alexander J. Shapiro, Deborah Jacobs, Kar T. Tan, Sungjin Park, R. S. Ruoff, Joannie W. Chin
Graphene oxides are potentially a new class of nanomaterial to enhance multifunctional properties of polymers because of their remarkable thermal conductivity, mechanical strength, and more importantly, low cost. The graphene oxides, produced by

Erratum: Scintillation time dependence and pulse shape discrimination in liquid argon

March 2, 2010
Author(s)
W. H. Lippincott, Kevin Coakley, D. Gastler, A. Hime, E. Kearns, D. N. McKinsey, J. A. Nikkel, L.C. Stonehill
We have found an error in the code used to perform the multibin method analysis of Sec. III C in which events were compared to a template trace calculated from the wrong photoelectron bin (the index l in Eqs. (14) and (15) did not match the observed signal

Scintillation time dependence and pulse shape discrimination in liquid argon

March 2, 2010
Author(s)
W. H. Lippincott, Kevin Coakley, D. Gastler, A. Hime, E. Kearns, D. N. McKinsey, J. A. Nikkel, L. C. Stonehill
Using a single-phase liquid argon detector with a signal yield of 4.85 photoelectrons per keV of electronic-equivalent recoil energy (keVee), we measure the scintillation time dependence of both electronic and nuclear recoils in liquid argon down to 5

The Nanomechanical Properties of Thin Film of Type I Collagen Fibrils

March 2, 2010
Author(s)
Koo-Hyun Chung, Kiran Bhadriraju, Tighe Spurlin, Robert F. Cook, Anne L. Plant
Cells sense and respond to the mechanical properties of the substrate to which they adhere. Matrices composed of collagen have been an important experimental system to study cell responses to the stiffness of the extracellular matrix. We had previously

Wind Driven Fire Research: Hazard and Tactics

March 2, 2010
Author(s)
Daniel M. Madrzykowski, Stephen Kerber
Fires in high-rise buildings create unique safety challenges for buillding occupants and fire fighters. Smoke and heat spreading through the corridors and the stairs of a building during a fire can limit building occupants' ability to escape and can limit

Automated Mapping of Explosives Particles in Composition C-4 Fingerprints

March 1, 2010
Author(s)
Jennifer R. Verkouteren, Jessica L. Staymates, Inho Cho
A method is described to perform automated mapping of RDX particles in C-4 fingerprints. The method employs polarized light microscopy and image analysis to map the entire fingerprint and the distribution of RDX particles. The approach is relatively quick

Chapter 17 Shock and Vibration Standards

March 1, 2010
Author(s)
David J. Evans, Henry C. Pussey
Chapter 17 is concerned with shock and vibration standards covering: terminology; use and calibration of transducers and instrumentation; shock and vibration generators; structures and structural systems; vehicles including land-based, airborne, and ocean

Classical Trajectories and RRKM Modeling of Collisional Excitation and Dissociation of Benzylammonium and tert Butyl Benzylammonium Ions in a Quadrupole-Hexapole-Quadrupole Tandem Mass Spectrometer

March 1, 2010
Author(s)
Vadim D. Knyazev, Stephen Stein
Collision-induced dissociation of the benzylammonium and the 4-tert butyl benzylammonium ions was studied experimentally in an electrospray ionization quadrupole-hexapole-quadrupole tandem mass spectrometer. Ion fragmentation efficiencies were determined

Comparison of Electronics Products Standards for Sustainability

March 1, 2010
Author(s)
Gaurav Ameta, Prabir Sarkar
This paper focuses on electronics product standards in relation to sustainability. Sustainability can be viewed as the ability of the current generation to meet its own need while protecting the environment so that the future generations can also meet

Description & Results of the 2007 NIST/NOAA Interlaboratory Comparison Exercise Program for Organic Contaminants in Marine Mammal Tissues

March 1, 2010
Author(s)
John Kucklick, Rebecca Pugh, Aurore Guichard, Michele M. Schantz, Stephen Wise, Teresa Rowles
The National Institute of Standards and Technology (NIST), in support of the National Oceanic & Atmospheric Administrations Marine Mammal Health and Stranding Response Program (NOAA/MMHSRP), conducts annual interlaboratory comparison exercises for the

Effect of Bandwidth and Numerical Aperture in Optical Scatterometry

March 1, 2010
Author(s)
Thomas A. Germer, Heather J. Patrick
We consider the effects of finite spectral bandwidth and numerical aperture in scatterometry measurements and discuss efficient integration methods based upon Gaussian quadrature in one dimension (for spectral bandwidth averaging) and two dimensions inside

How Accurate is a Radio Controlled Clock?

March 1, 2010
Author(s)
Michael A. Lombardi
This paper discusses the factors that determine the accuracy of radio controlled clocks. The topics covered including the accuracy of the time signal station, path delay, synchronization errors, and the time error that accumulates between synchronizations.

Infrared imaging method of measuring growth rate of a hydride phase

March 1, 2010
Author(s)
Zhuopeng Tan
A method of studying growth rate of hydrides using in-situ infrared imaging of wedge-shaped films is presented. Hydrogenation experiments with Pd-capped Mg-Ti films having thickness gradient of 500 nm/cm were conducted at 100 ˚C and 1-5 bar H2 gas pressure

Linking Canny Edge Pixels with Pseudo-watershed Lines

March 1, 2010
Author(s)
Javier Bernal
A method is presented for computing pseudo-watershed lines that can be used for linking pixels that have been identified as edge pixels with the Canny edge detector. An additional procedure is also described for filling breaks that may still exist between

Molecular spectroscopy with frequency combs

March 1, 2010
Author(s)
Ian R. Coddington
Pulsed femtosecond frequency combs are rapidly developing as a powerful spectroscopic tool. As a spectroscopic source stabilized frequency combs potentially offer broad spectral coverage, near perfect frequency accuracy, low timing jitter and broadband
Displaying 27201 - 27225 of 73929
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