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Displaying 25351 - 25375 of 74179

Rheological Characterization of Flow Table Reference Material

April 29, 2011
Author(s)
Chiara F. Ferraris, Haleh Azari
The flow table is a standardized test that is widely used to qualify a mortar to be tested for compressive strength and air content. It is also the only standard test to quantify a mortar workability property. Therefore, the calibration of this device is

Selective Adsorption of CO2 from Light Gas Mixtures Using a Structurally Dynamic Porous Coordination Polymer

April 29, 2011
Author(s)
Winnie K. Wong-Ng, Andrew J. Allen, Laura Espinal, Kristi L. Kauffman, Jeffrey T. Culp, Angela Goodman, Thomas G. Brown, Mark P. Bernardo, Russel J. Pancoast, Danielle Chirdon, Christopher Matranga
The selective adsorption of CO2 from binary mixtures of N2 and CH4 was investigated using a structurally dynamic porous coordination polymer, catena-bis(dibenzoylmethanato)-(4,4’bipyridyl)nickel (II), ‘NiDBM-Bpy’, as the separation sorbent. A third gas

Conformer-specific vibronic spectroscopy and vibronic coupling in a flexible bichromophore: bis-(4-hydroxyphenyl)methane

April 28, 2011
Author(s)
Chirantha P. Rodrigo, Christian Muller, Nathan Pillsbury, William H. James III, David F. Plusquellic, Timothy Zwier
The vibronic spectroscopy of jet-cooled bis-(4-hydroxyphenyl)methane (b4HPM) has been explored using fluorescence excitation (FE), dispersed fluorescence (DFL), UV-UV holeburning (UVHB), UV depletion (UVD), and fluorescence-dip infrared (FDIR)

NIST Handbook 150-8, NVLAP Acoustical Testing Services

April 28, 2011
Author(s)
Betty A. Sandoval
NIST Handbook 150-8 presents technical requirements and guidance for the accreditation of laboratories under the National Voluntary Laboratory Accreditation Program (NVLAP) acoustical testing services program. It is intended for information and use by

Preliminary Investigation of Polarization Effects During Metal Cutting

April 28, 2011
Author(s)
Eric P. Whitenton
Under certain conditions, the polarization state of infrared light emitted by metal changes when the metal is strained. During cutting, metal is severely strained. Assessing both strain and strain rate is of interest to the metal cutting research community

Toward Privacy Standards Based on Empirical Studies

April 28, 2011
Author(s)
Serge M. Egelman, Erika McCallister
In this paper, we argue that if privacy standards are created to guide “do-not-track” technologies, it is imperative that these standards are created with the primary stakeholder in mind: the data subject. Previous privacy and security standards have been

Frequency Up-conversion Single Photon Detectors for Quantum Communication Systems

April 27, 2011
Author(s)
Lijun Ma, Oliver T. Slattery, Xiao Tang, Joshua Bienfang
Frequency up-conversion technology can be used to increase detection efficiency for near infrared photons, as has been demonstrated in fiber-based quantum communication systems. In a continuous wave pumped up-conversion detector, the temporal resolution is

High Pressure Viscosity Measurements of 1,1,1,2-Tetrafluoroethane

April 27, 2011
Author(s)
Arno R. Laesecke, Scott Bair
Viscosity measurements have been carried out with a falling-cylinder instrument in the compressed liquid and supercritical region of the hydrofluorocarbon 1,1,1,2-tetrafluoroethane (R134a). A highly pure sample was used. The measurement region at

NIST Handbook 133: Checking the Net Contents of Packaged Goods (2011 Ed.)

April 27, 2011
Author(s)
Kenneth S. Butcher, Linda D. Crown, David Sefcik, Lisa Warfield
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

A new interface defect spectroscopy method

April 26, 2011
Author(s)
Jason T. Ryan, Liangchun (. Yu, Jae Han, Joseph J. Kopanski, Kin P. Cheung, Fei Zhang, Chen Wang, Jason P. Campbell, John S. Suehle, Vinny Tilak, Jody Fronheiser

ThermoData Engine (TDE): Software Implementation of the Dynamic Data Evaluation Concept. 6. Dynamic Web-based Data Dissemination through the NIST Web Thermo Tables

April 26, 2011
Author(s)
Kenneth G. Kroenlein, Chris D. Muzny, Vladimir Diky, Andrei F. Kazakov, Robert D. Chirico, Joe W. Magee, Ilmutdin M. Abdulagatov, Michael D. Frenkel
ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported recently in this journal. In the present paper, we describe the development of a World Wide Web-based interface to TDE evaluations

An optical lattice of flux

April 25, 2011
Author(s)
Ian B. Spielman
A suitable optical lattice for cold atoms could produce a large effective magnetic field in which the atoms would realize analogs to quantum Hall states.

Compact cryogenic self-aligning fiber-to-detector coupling with losses below one percent

April 25, 2011
Author(s)
Aaron J. Miller, Adriana Lita, Brice R. Calkins, Igor Vayshenker, Stephen Gruber, Sae Woo Nam
We present a compact packaging technique for coupling light from a single-mode telecommunication fiber to cryogenic singlephoton sensitive devices. Our single-photon detectors are superconducting transition-edge sensors (TESs) with a collection area only a

DEVELOPMENT OF LARGE DIRECTIONAL WIND SPEED DATABASES

April 25, 2011
Author(s)
Dong Hun Yeo
For structures sensitive to wind directionality, methods for the estimation of wind effects require the use of time series of directional wind speeds with length exceeding the length of the MRIs of interest. This study proposes a procedure for generating

Certification of Vitamins and Carotenoids in SRM 3280 Multivitamin/Multielement Tablets

April 24, 2011
Author(s)
Lane C. Sander, Katherine E. Sharpless, Stephen A. Wise, Bryant C. Nelson, Karen W. Phinney, Barbara J. Porter, Catherine A. Rimmer, Jeanice M. Brown Thomas, Laura J. Wood, James H. Yen, David L. Duewer, R. Atkinson, R. Chen, R. Goldschmidt, W.R. Wolf, I-P Ho, M. Betz
A new multivitamin/multielement dietary supplement Standard Reference Material (SRM) has been issued by the National Institute of Standards and Technology (NIST) with certified and reference concentration values for 13 vitamins, 24 elements, and two
Displaying 25351 - 25375 of 74179
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