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Displaying 28851 - 28875 of 73812

Integration of IEEE 1451 Smart Transducers and OGC-SWE Using STWS

February 17, 2009
Author(s)
Yuyin Song, Kang B. Lee
This paper describes the integration of IEEE 1451 smart transducers and Open Geospatial Consortium -Sensor Web Enablement (OGC-SWE) using the Smart Transducer Web Service (STWS). An integration architecture and a prototype system are presented. The

Radionuclide Standardization by Primary Methods: An Overview

February 17, 2009
Author(s)
Ronald Colle
Primary methods of radionuclidic standardization serve as the underlying basis of the physical measurement standards of activity that are needed in virtually every sub-discipline of radioanalytical and nuclear chemistry. Primary methods refer to the direct

Adhesion at layer-by-layer surfaces in aqueous environments

February 15, 2009
Author(s)
Adam J. Nolte, Jun Y. Chung, Marlon L. Walker, Christopher M. Stafford
Adhesion between materials is often governed by the ambient environment, which can mediate or change the types of molecular interactions present at an interface. Biological interactions, for example, can be mediated by factors such as temperature, ionic

Subsurface Patterning and its Effect on Interfacial Adhesion

February 15, 2009
Author(s)
Edwin P. Chan, Christopher M. Stafford
Nature (e.g. geckos and insects) has illustrated that a patterned surface can effectively tailor the adhesion of an interface. Inspired by the amazing attachment and detachment ability of these animals, significant efforts have been put forth to understand

Ultrathin Adhesives: Confinement Effect on Modulus

February 15, 2009
Author(s)
Jessica M. Torres, Christopher Stafford, Bryan D. Vogt
In this work, we will employ this wrinkling metrology to extract the modulus of polymer thin films for a homologous series of poly(n-alkyl methacrylate)s. In particular, we take advantage of the decrease in Tg as the alkyl chain length increases for these

Common Biometric Exchange Formats Framework Standardization

February 13, 2009
Author(s)
Fernando L. Podio, Fred Herr
Common Biometric Exchange Formats Framework (CBEFF) provides a standardized set of definitions and procedures that support the interchange of biometric data in standard data structures called CBEFF biometric information records (BIRs). CBEFF permits

Reliability in Grid Computing System

February 13, 2009
Author(s)
Christopher E. Dabrowski
In recent years, grid technology has emerged as an important tool for solving compute-intensive problems within the scientific community and in industry. To further the development and adoption of this technology, researchers and practitioners from

Certification of Beryllium Mass Fraction in SRM 1877 Beryllium Oxide Powder Using High-Performance Inductively-Coupled Plasma Optical Emission Spectrometry with Exact Matching

February 11, 2009
Author(s)
Michael R. Winchester, Gregory C. Turk, Therese A. Butler, Thomas J. Oatts, Charles Coleman, Donald Nadratowski, Ritu Sud, Mark D. Hoover, Aleksandr B. Stefaniak
High-Performance Inductively Coupled Plasma Optical Emission Spectrometry (HP-ICP-OES) was used to certify the Be mass fraction in National Institute of Standards and Technology (NIST) Standard Reference Material (SRM) 1877 Beryllium Oxide Powder. In order

Process-Controlled Plasma-Sprayed Yttria-Stabilized Zirconia Coatings: New Insights from

February 11, 2009
Author(s)
Y Li, W Chi, S Sampath, A N. Goland, H Herman, Andrew J. Allen, J Ilavsky
A multi-component microstructure model is applied in ultrasmall-angle X-ray scattering (USAXS) studies of the processing microstructure property relationships for two groups of plasma-sprayed yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBCs)

The Drosophila melanogaster PeptideAtlas facilitates the use of peptide data for improved fly proteomics and genome annotation

February 11, 2009
Author(s)
Sandra Loevenich, Erich Brunner, Nichole King, Stephen Stein, Ernst Hafen, Rudolf Aebersold
Background: Crucial foundations of any quantitative systems biology experiment are correct genome and proteome annotations in the reference databases used. Protein databases compiled from high quality empirical protein identifications, which are - in turn

Design of an on-chip microscale nanoassembly system

February 10, 2009
Author(s)
Jason J. Gorman, Yong Sik Kim, Andras Vladar, Nicholas G. Dagalakis
A microscale nanoassembly system has been designed for the fabrication of nanodevices and in situ electromechanical characterisation of nanostructures. This system consists of four Microelectromechanical Systems(MEMS)-based nanomanipulators positioned

Face Recognition by Computers and Humans

February 10, 2009
Author(s)
P J. Phillips, Rama Chellappa, Pawan Sinha
In most situations, identifying humans using faces is an effortless task for humans. Is this true for computers? This very question defines the field of automatic face recognition, one of the most active research areas in computer vision, pattern

Surface Dynamics of "Dry" Homopolymer Brushes

February 10, 2009
Author(s)
Bulent Akgun, Gokce Ugur, Jianqiang Zhang, Suresh Narayanan, Sanghoon Song, Heegu Lee, William J. Brittain, Hyunjung G. Kim, Sunil K. Sinha, Mark Foster
The dynamics of the surface height fluctuations on layers of covalently tethered, nearly monodisperse polymer chains synthesized by atom transfer radical polymerization were studied using x-ray photon correlation spectroscopy. The data reveal that both

3D Particle Trajectories Observed by Orthogonal Tracking Microscopy

February 9, 2009
Author(s)
Matthew D. McMahon, Andrew J. Berglund, Peter T. Carmichael, Jabez J. McClelland, James A. Liddle
We demonstrate high-resolution, high-speed 3D nanoparticle tracking using angled micromirrors. When angled micromirrors are introduced into the field of view of an optical microscope, reflected side-on views of a diffusing nanoparticle are projected

A new connection between electricity and magnetism

February 9, 2009
Author(s)
Robert D. McMichael, Mark D. Stiles
A Viewpoint on ``Universal Electromotive Force Induced by Domain Wall Motion,'' Shengyuan A. Yang, Geoffrey S. D. Beach, Carl Knutson, Di Xiao, Qian Niu, Maxim Tsoi and James L. Erskine.

Making Kilopixel X-Ray Microcalorimeter Arrays a Reality

February 9, 2009
Author(s)
William B. Doriese, Megan E. Eckart
To enable unprecedented imaging X-ray spectroscopy, scientists at NASA's Goddard Space Flight Center and the National Institute of Standards and Technology are developing arrays of high-resolution microcalorimeters and their readout.

Pulse Shape Discrimination for a Fast Neutron Detector

February 9, 2009
Author(s)
Kevin J. Coakley, Dominic F. Vecchia, Jeffrey S. Nico, B Fisher
We are developing a detector that uses liquid scintillator loaded with Li-6 for the efficient measurement of fast neutrons and their energy. Such a detector would have both scientific applications such as quantification of neutron energy spectra in
Displaying 28851 - 28875 of 73812
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