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Displaying 29076 - 29100 of 143780

Tight real-time synchronization of a microwave clock to an optical clock across a turbulent air path

April 15, 2016
Author(s)
Hugo Bergeron, Laura C. Sinclair, William C. Swann, Craig Nelson, Jean-Daniel Deschenes, Esther Baumann, Fabrizio R. Giorgetta, Ian R. Coddington, Nathan R. Newbury
The ability to distribute the precise time and frequency from an optical clock to remote platforms could enable future precise navigation and sensing systems. Here we demonstrate tight, real-time synchronization of a remote microwave clock to a master

A Fluorinated Metal-Organic Framework for High Methane Storage at Room Temperature

April 14, 2016
Author(s)
Ganggang Chang, Huimin Wen, Bin Li, Wei Zhou, Hailong Wang, Khalid Alfooty, Zongbi Bao, Banglin Chen
A fluorinated metal-organic framework NOTT-108 with single pure-phase has been synthesized for the first time, which has enabled us to examine the effect of the substituted fluorine atoms on the methane storage. The activated NOTT-108a shows a permanent

Dual-comb spectroscopy

April 14, 2016
Author(s)
Ian R. Coddington, Nathan R. Newbury, William C. Swann
Dual-comb spectroscopy is an emerging new spectroscopic tool that exploits the frequency resolution, frequency accuracy, broad bandwidth, and brightness of frequency combs for ultra-high resolution, sensitive broadband spectroscopy. By use of two coherent

In-situ Stress Measurements During Cobalt Electrodeposition on (111)-Textured Au

April 14, 2016
Author(s)
Gery R. Stafford, Matthew R. Fayette, Ugo Bertocci
Cantilever curvature was used to examine stress generation during the electrodeposition of Co from 0.1 M NaClO4 + 0.001 M Co(ClO4)2 (pH = 4.8) in films measuring less than 100 nm in thickness. The stress-thickness product showed a -0.2 N/m compression in

New NIST Security Standard Can Protect Credit Cards, Health Information

April 14, 2016
Author(s)
Morris J. Dworkin, Larry Feldman, Gregory A. Witte
This bulletin summarizes the information presented in NIST Special Publication (SP) 800-38G, "Recommendation for Block Cipher Modes of Operation: Methods for Format-Preserving Encryption." The publication specifies two methods for format-preserving

One-Dimensional Ionic Self-Assembly in a Fluorous Solution: The Structure of Tetra-n-butylammonium tetrakis[3,5-bis(perfluorohexyl)phenyl]borate in Perfluoromethylcyclohexane by Small-Angle Neutron Scattering (SANS)

April 14, 2016
Author(s)
Kenneth A. Rubinson, Philippe Buhlmann, Thomas C. Allison
Fluorous liquids are the least polarizable condensed phases known, and their nonpolar members form solutions with conditions the closest to being in vacuo. A soluble salt consisting of a large fluoroborate anion, tetrakis[3,5-bis(perfluorohexyl)phenyl

Development of Two Fine Particulate Matter Standard Reference Materials ( 4 mm and 10 mm) for the Determination of Organic and Inorganic Constituents

April 13, 2016
Author(s)
Michele M. Schantz, Danielle Cleveland, N. Alan Heckert, John Kucklick, Stefan D. Leigh, Stephen E. Long, Jennifer Lynch, Karen E. Murphy, Rabia Oflaz, Adam L. Pintar, Barbara J. Porter, Savelas A. Rabb, Stacy Schuur, Stephen Wise, Rolf L. Zeisler
Two new Standard Reference Materials (SRMs), SRM 2786 Fine Particulate Matter ( 4 µm) and SRM 2787 Fine Particulate Matter ( 10 µm) have been developed in support of the US Environmental Protection Agency's National Ambient Air Quality Standards for

Form Factors for Branched Polymers with Excluded Volume

April 13, 2016
Author(s)
Boualem Hammouda
The form factors for star-branched polymers with linear branches or with looping branches are calculated. The effect of chain swelling excluded volume is incorporated through an excluded volume parameter. Furthermore, the form factor for dendrimers with

JPEG 2000 CODEC Certification Guidance for 1000 ppi Fingerprint Friction Ridge Imagery

April 13, 2016
Author(s)
John M. Libert, Shahram Orandi, Michael D. Garris, Frederick R. Byers, John D. Grantham
The document describes the procedure by which applications of JPEG 2000 CODECs will be evaluated with respect to conformance to the NIST guidance for compression of 1000 ppi friction ridge images as detailed in NIST Special Publication 500-289 [NIST5]

PIV Card Application and Middleware Interface Test Guidelines (SP 800-73-4 compliance)

April 13, 2016
Author(s)
David Cooper, Hildegard Ferraiolo, Ramaswamy Chandramouli, Jason Mohler
NIST Special Publication (SP) 800-73 contains the technical specifications to interface with the smart card to retrieve and use the Personal Identity Verification (PIV) identity credentials. This document, SP 800-85A, contains the test assertions and test
Displaying 29076 - 29100 of 143780
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