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Displaying 15301 - 15325 of 74203

Water Dynamics in Rigid Ionomer Networks

December 8, 2016
Author(s)
N. C. Osti, T.N. Etampawala, U.M. Shrestha, D. Aryal, Madhu Sudan Tyagi, S. O. Diallo, E. Mamontov, C. J. Cornelius, D. Perahia
The dynamics of water within ionic polymer networks formed by sulfonated poly(phenylene) (SPP), as revealed by quasi-elastic elastic neutron scattering (QENS), is presented. These polymers are distinguished from other ionic macromolecules by their rigidity

Atomically precise device fabrication

December 7, 2016
Author(s)
Joseph A. Hagmann, Xiqiao Wang, Pradeep N. Namboodiri, Richard M. Silver, Curt A. Richter
An improved capacity to control matter at the atomic scale is central to the advancement of nanotechnology. The complementary metal-oxide-semiconductor (CMOS) devices that power existing computing technology, which continue to scale down in size as

DNA Error Rates

December 7, 2016
Author(s)
John Butler
The 1993 U.S. Supreme Court ruling in Daubert vs. Merrell-Dow Pharmaceuticals insists on knowledge regarding error rates and their application when evidence is introduced into court [1]. The 1996 National Research Council (NRC II) report The Evaluation of

Draft B Report on the Key Comparison CCM.P-K4.2012 in Absolute Pressure from 1 Pa to 10 kPa

December 7, 2016
Author(s)
Jacob E. Ricker, Jay H. Hendricks, Thomas Bock, Prazak Dominik, Tokihiko Kobata, Jorge Torres, Irina Sadkovskaya
This report summarizes the Consultative Committee for Mass (CCM) key comparison CCM.P-K4.2012 for absolute pressure spanning the range of 1 Pa to 10 000 Pa. The comparison was completed via calibration of a transfer standard carried out at six NMIs during

Editorial - Special Issue: Smart Manufacturing PHM

December 7, 2016
Author(s)
Brian A. Weiss, Philip Freeman, Jay Lee, Radu Pavel
This Special Issue on Smart Manufacturing PHM contains six outstanding technical papers and one communication that collectively present a diverse range of research and practical application topics within the field of Smart Manufacturing PHM.

Measurement of Wireless Devices in Reverberation Chambers

December 7, 2016
Author(s)
Catherine A. Remley
When the antenna is integrated into the body of a wireless device, as it is for cell phones and many other portable devices, performance testing is typically done under free-field conditions. In this overview presentation, we will discuss free-field

Mechanical response of thermally annealed Nafion thin films

December 7, 2016
Author(s)
Bradley R. Frieberg, Kirt A. Page, Joshua R. Graybill, Marlon L. Walker, Gery R. Stafford, Christopher L. Soles
The proton exchange membranes (PEMs) in a hydrogen fuel cell experiences hundreds if not thousands of cycles between wet and dry conditions during their service life, which leads to swelling and shrinking of the membrane material. This can lead to

Usability Testing of a Contactless Fingerprint Device: Part 1

December 7, 2016
Author(s)
Brian C. Stanton, Mary F. Theofanos, Susanne M. Furman, John M. Libert, Shahram Orandi, John D. Grantham
The use of biometrics to identify individuals has become an important component of efforts to ensure U.S. national security, and has also grown rapidly. Biometrics are, for example, an integral part of the United States Visitor and Immigrant Status

When "Optimal Filtering" Isn't

December 7, 2016
Author(s)
Joseph Fowler, Bradley Alpert, W.Bertrand (Randy) Doriese, James P. Hays-Wehle, Young I. Joe, Kelsey Morgan, Galen O'Neil, Joel Ullom, Dan Schmidt, Daniel Swetz
The so-called ''optimal filter'' analysis of a microcalorimeter's x-ray pulses is statistically optimal only if all pulses have the same shape, regardless of energy. The shapes of pulses from a nonlinear detector can and do depend on the pulse energy

A Tool for Evaluating Fault Detection and Diagnostic Methods for Fan Coil Units

December 6, 2016
Author(s)
Shokouh Pourarian, Jin Wen, Daniel Veronica, Amanda Pertzborn, Xiaohui Zhou, Ran Liu
Dynamic simulation software tools are needed for the research and development of improved methods for automatic control and automated fault detection and diagnosis of heating, ventilation, and air conditioning (HVAC) systems. These tools must generate data

Doppler Sensitivity and Its Effect on Transatlantic TWSTFT Links

December 6, 2016
Author(s)
Shengkang Zhang, Tom Parker, Victor S. Zhang
Two Way Satellite Time and Frequency Transfer (TWSTFT or TW) is a commonly used technique to compare time and frequency precisely among the time and frequency laboratories. The precision of TWSTFT on time comparison is about 0.5 ns or even better, which

Enriching and purifying silicon epilayers for quantum information

December 6, 2016
Author(s)
Joshua M. Pomeroy, Kevin J. Dwyer, Ke Tang, Hyun S. Kim, Aruna N. Ramanayaka, David S. Simons
High quality, enriched silicon contains an exceptionally low density of defects and unpaired electron and nuclear spins that allow candidate qubits (single donors or quantum dots) to exhibit very long dephasing times compared to silicon with a natural

NIST Handbook 133: Checking the Net Contents of Packaged Goods (2017 Ed.)

December 6, 2016
Author(s)
Lisa Warfield, David Sefcik, Linda D. Crown
This handbook has been prepared as a procedural guide for the compliance testing of net contents statements on packaged goods. Compliance testing of packaged goods is the determination of the conformance results of the packaging, distribution, and

X-ray Diffraction and Density Functional Theory Studies of R2FeCoO6 (R=Pr, Nd, Sm, Eu, Gd)

December 6, 2016
Author(s)
Winnie K. Wong-Ng, Guangyao Liu, Igor Levin, Izaak Williamson, P Ackerman, Kevin R. Talley, Khawla AlHamdan, James A. Kaduk, Lan Li
The structure and thermoelectric properties of a series of lanthanide iron cobalt oxides, R2FeCoO6 (R = Pr, Nd, Sm, Eu and Gd), have been investigated. The space group of these compounds was confirmed to be orthorhombic Pnma (No.62), Z=4. From Gd to Pr
Displaying 15301 - 15325 of 74203
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