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Displaying 23226 - 23250 of 73929

Measurements and Standards for Bulk-Explosive Detection

May 31, 2012
Author(s)
Lawrence T. Hudson, Fred B. Bateman, Paul M. Bergstrom, Frank Cerra, Jack L. Glover, Ronaldo Minniti, Stephen M. Seltzer, Ronald E. Tosh
Due to the ease of assembly and leveraged disruptive effect, the improvised explosive device (IED) is the method of choice of today’s terrorist. With more than ten thousand IED incidents annually, and global expenditures for aviation and commercial

Identification and quantification of DNA repair proteins by liquid chromatography/isotope-dilution tandem mass spectrometry using 15N-labeled whole proteins as internal standards

May 30, 2012
Author(s)
M Miral Dizdar, Prasad T. Reddy, Guldal Kirkali, Gamze Tuna, Bryant C. Nelson, Pawel Jaruga
Oxidatively induced DNA damage is implicated in disease, unless it is repaired by DNA repair. DNA repair proteins may be used as early detection and therapeutic biomarkers in cancer and other diseases. For this purpose, the measurement of the expression

Properties of Saturated Liquid D2O

May 30, 2012
Author(s)
Allan H. Harvey
This is a small section (two pages) for the next edition of the CRC Handbook of Chemistry and Physics.

Cloud Computing Synopsis and Recommendations

May 29, 2012
Author(s)
Mark L. Badger, Timothy Grance, Robert Patt-Corner, Jeffrey M. Voas
This document reprises the NIST-established definition of cloud computing, describes cloud computing benefits and open issues, presents an overview of major classes of cloud technology, and provides guidelines and recommendations on how organizations

Magnetic Field-Induced Instability of the Cooperative Paramagnetic State in Zn x Co 4-x (OD) 6 Cl 2

May 29, 2012
Author(s)
S. E. Dissanayake, C. Chan, S. Ji, J. Lee, Yiming Qiu, K. C. Rule, B. Lake, Mark Green, M. Hagihala, X. G. Zheng, T. K. Ng, S.-H. Lee
Using elastic and inelastic neutron scattering techniques with and without application of an external magnetic field H, the magnetic ground states of Zn xCo 4-x(OD) 6Cl 2 (x=0,1) were studied. Our results show that for x=0, the ground state is a magnetic

Proposed General Approach to Fire-Safety Scenarios

May 29, 2012
Author(s)
Amanda P. Robbins, Erica D. Kuligowski, Steve M. Gwynne
A systematic approach to the identification of fire-safety scenarios for analysis is desirable in order to identify important scenarios and to help ensure a consistent approach for different analysts. The number of possible fire-safety scenarios in any

Robust Auto-Alignment Technique for Orientation-Dependent Etching of Nanostructures

May 29, 2012
Author(s)
Craig D. McGray, Richard J. Kasica, Ndubuisi G. Orji, Ronald G. Dixson, Michael W. Cresswell, Richard A. Allen, Jon C. Geist
A robust technique is presented for auto-aligning nanostructures to slow-etching crystallographic planes in materials with diamond cubic structure. Lithographic mask patterns are modified from the intended dimensions of the nanostructures to compensate for

The Peierls Substitution in an Engineered Lattice Potential

May 29, 2012
Author(s)
Karina K. Jimenez Garcia, Lindsay J. LeBlanc, Ross A. Williams, Matthew C. Beeler, Abigail R. Perry, Ian B. Spielman
Artificial gauge fields open new possibilities to realize quantum many-body systems with ultracold atoms, by constructing Hamiltonians usually associated with electronic systems. In the presence of a periodic potential, artificial gauge fields may bring

Incorporating Attribute Value Uncertainty into Decision Analysis

May 28, 2012
Author(s)
Dennis D. Leber, Jeffery W. Herrmann
Attribute value uncertainty is present in a decision when the consequences are characterized by uncertain estimates of the underlying, unknown true values. Attributes defined based upon measurement data, experimental data, or survey data are subject to

Modeling Gaps and Overlaps of Sustainability Standards

May 28, 2012
Author(s)
Paul W. Witherell, Sudarsan Rachuri, Anna D'Alessio
Organizational and production dispersions in manufacturing enterprises can create situations where manufacturers are asked to conform to multiple sustainability standards to participate in targeted markets. These standards may vary in scope, application

Quality Information Framework - Integrating Metrology Processes

May 25, 2012
Author(s)
Fiona Zhao, Thomas Kramer, John A. Horst, William G. Rippey, Robert Brown
As defined by major dimensional metrology system users and suppliers, the Quality Information Framework (QIF) is an integrated and holistic set of information models which, if widely adopted, can enable the effective exchange of metrology data throughout

Spectroscopy and Thermometry of Drumhead Modes in a Mesoscopic Trapped-Ion Crystal Using Entanglement

May 25, 2012
Author(s)
Brian C. Sawyer, Joseph W. Britton, Adam Keith, C.-C Joseph Wang, James K. Freericks, Hermann Uys, Michael Biercuk, John J. Bollinger
We demonstrate a method of sensitive detection and thermometry of individual modes in cold ( sim1 mK), planar one-component ion plasmas. Exploiting precise control over the valence electron spins of several hundred crystallized 9Be + confined in a Penning

A Compact Cold-Atom Frequency Standard Based on Coherent Population Trapping

May 24, 2012
Author(s)
Francois-Xavier R. Esnault, John Kitching, Elizabeth Donley
We present the status of our cold-atom clock based on coherent population trapping, including the present clock stability and a preliminary evaluation of the three main systematic frequency shifts: the 1st-order Doppler shift, the Zeeman shift, and the

A high stability optical frequency reference based on thermal calcium atoms

May 24, 2012
Author(s)
Richard W. Fox, Jeffrey Sherman, W. Douglas, Judith B. Olson, Andrew Ludlow, Christopher W. Oates
Here we report an imprecision below 10 -14 with a simple, compact optical frequency standard based upon thermal calcium atoms. Using a Ramsey-Borde spectrometer we excite features with linewidths 5 kHz for the 1S 0- 3P 1 intercombination line at 657 nm
Displaying 23226 - 23250 of 73929
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