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Search Publications

NIST Authors in Bold

Displaying 28301 - 28325 of 73697

Fuel Dependent Effects on Droplets Burning in Microgravity

June 1, 2009
Author(s)
Samuel L. Manzello, M Y. Choi
Measurements of soot concentration and soot mass were performed in microgravity conditions for hexane, heptane, nonane, and decane droplets burning in air at the NASA Glenn Research Center (GRC) 2.2 second drop tower in Cleveland, OH. Experiments performed

High Strain Rate Tissue Simulant Measurements Using digital Image Correlation

June 1, 2009
Author(s)
Steven P. Mates, Richard L. Rhorer, Richard Everett, Kirth Simmonds, Amit Bagchi
Measuring the response of soft materials to high strain rate deformation is extremely challenging because of the difficulty of achieving dynamic equilibrium during high strain rate mechanical testing such as Kolsky bar testing. Digital image correlation

Hyperspectral Image Compressive Projection Algorithm

June 1, 2009
Author(s)
Joseph P. Rice, Jorge E. Neira, David W. Allen
We describe a compressive projection algorithm and quantitatively assess its performance when used with a Hyperspectral Image Projector (HIP). The HIP is being developed by NIST for system-level performance testing of hyperspectral and multispectral

Is Quantum Cryptography Provably Secure?

June 1, 2009
Author(s)
Anastase Nakassis, Joshua C. Bienfang, Paul M. Johnson, Alan Mink, D J. Rogers, Xiao Tang, Carl J. Williams
Quantum cryptography asserts that shared secrets can be established over public channels in such a way that the total information of an eavesdropper can be made arbitrarily small with probability arbitrarily close to 1. As we will show below, the current

Methods for transferring the SI unit of force from millinewtons to piconewtons

June 1, 2009
Author(s)
Gordon A. Shaw, Koo-Hyun Chung, Douglas T. Smith, Jon R. Pratt
The establishment of standards for small force measurement requires a link to an absolute measurement of force traceable to the international system of units (SI). To this end, a host of different means are being employed by the NIST small force

Myocardial Calcification in Captive Grouper Epinephelus Aeneus

June 1, 2009
Author(s)
Naomi Eidelman, A Colorni, Jirun Sun, M.C. Fishbein, A Diamant
A case of myocardial calcification is described in the Mediterranean white grouper, Epinephelus aeneus, cultured as broodstock in Eilat (Israel, Red Sea). Large calcified nodules and scar tissue were observed in the ventricular tissues. The chemical

Near-Field Spherical Scanning: Quiet-Zone Field Evaluation

June 1, 2009
Author(s)
Randy Direen, Michael H. Francis, Ronald C. Wittmann
Spherical near-field scanning measurements are used to determine the incident electromagnetic fields within a test volume. Results from two independent approaches are compared and found to agree within estimated uncertainties.

Primary Standards for Brachytherapy Sources

June 1, 2009
Author(s)
Michael G. Mitch, Christopher G. Soares
The AAPM dosimetry protocol for LDR brachytherapy seeds that emit x-rays of energies ≤ 50 keV is described in the TG-43U1 report (Rivard et al. 2004). In this protocol, it is specified that the strength of such sources be expressed in terms of air-kerma

Quantum Key Distribution System Operating at Sifted-Key Rate Over 4 Mbit/s 1

June 1, 2009
Author(s)
Xiao Tang, Lijun Ma, Alan Mink, Anastase Nakassis, Hai Xu, Barry J. Hershman, Joshua C. Bienfang, David H. Su, Ronald F. Boisvert, Charles W. Clark, Carl J. Williams
A complete fiber-based polarization encoding quantum key distribution (QKD) system based on the BB84 protocol has been developed at National Institute of Standard and Technology (NIST). The system can be operated at a sifted key rate of more than 4 Mbit/s

Rapid and precise absolute distance measurements at long range

June 1, 2009
Author(s)
Ian R. Coddington, William C. Swann, Ljerka Nenadovic, Nathan R. Newbury
The ability to determine absolute distance to an object is one of the most basic measurements of remote sensing. High precision ranging has important applications in both large-scale manufacturing and in future tight formation-flying satellite missions

Time-of-flight mass spectrometry with latching Nb meander detectors

June 1, 2009
Author(s)
Brian Estey, James A. Beall, Gene C. Hilton, Kent D. Irwin, Daniel R. Schmidt, Joel N. Ullom, Robert E. Schwall
Mass Spectrometry is widely used for protein characterization, structural virology, drug discovery, and clinical chemistry. However the detection efficiency of existing detectors for mass spectrometry degrades rapidly as mass is increased and is only ~10-5

Energy Price Indices and Discount Factors for Life-Cycle Cost Analysis 2009

May 31, 2009
Author(s)
Amy S. Rushing, Barbara C. Lippiatt
This is the 2009 edition of energy price indices and discount factors for performing life-cycle cost analyses of energy and water conservation and renewable energy projects in federal facilities. It will be effective from April 1, 2009 to March 31, 2010

Generation of optical Schrodinger cat states by number-resolved squeezed photon subtraction

May 31, 2009
Author(s)
Thomas Gerrits, Scott C. Glancy, Tracy S. Clement, Brice R. Calkins, Adriana E. Lita, Aaron J. Miller, Alan L. Migdall, Sae Woo Nam, Richard P. Mirin, Emanuel H. Knill
We have generated and measured an approximation of an optical Schrödinger cat state by photon subtraction from a squeezed state. Using single-photon avalanche photodiode detectors and photon-number-resolving transition edge sensors, we were able to extract

Intensity dynamics in a waveguide array laser

May 31, 2009
Author(s)
Mingming M. Feng, Steven T. Cundiff, Kevin L. Silverman, Richard Mirin, Matt Williams, J. Nathan N. Kutz
We report the intensity dynamics of a five-emitter laser array subject to a linearly decreasing injection current. The array produces oscillatory power output with a nearly Pi phase shift between the oscillations of adjacent waveguides.
Displaying 28301 - 28325 of 73697
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