Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Journals

Performance of Critical Flow Venturis under Transient Conditions

April 13, 2010

Author(s)

John D. Wright

Critical flow venturis (CFVs) can be used to measure flow under transient pressure and flow conditions with uncertainties of 0.13 % or less (95 % confidence...

Package "cellVolumeDist"

April 13, 2010

Author(s)

Katharine M. Mullen, Michael W. Halter

This package implements a methodology for using cell volume distributions to estimate cell growth rates and division times that is described in the paper...

RECIST vs. Volume Measurement in Medical CT Using Ellipsoids of Known Size

April 12, 2010

Author(s)

Zachary H. Levine, Bruce R. Borchardt, Nolan J. Brandenburg, Charles W. Clark, Balasubramanian Muralikrishnan, Craig M. Shakarji, Joseph J. Chen, Eliot L. Siegel

(a) Purpose: We wanted to test the extent to which two common methods of determining the sizes of tumors would perform when compared to a statistically...

Parametric Study on the use of Reverberation Chambers for Repeatable/Controllable Wireless Testing: Application to BER Measurements

April 12, 2010

Author(s)

Christopher L. Holloway, E Genender, Catherine A. Remley, John M. Ladbury, Galen H. Koepke

We illustrate use of the reverberation chamber to simulate different wireless propagation environments including effects such as narrowband or frequency...

Chemical Attribution of Corroded Coins Using X-ray Fluorescence and Lead Isotope Ratios: A Case Study from First Century Judaea

April 10, 2010

Author(s)

Lee L. Yu, Michael Epstein, David Hendin, Nathan Bower

ICP-MS and XRF analyses were conducted on Judean coins from the first century BCE and CE in order to determine the efficacy and limits of these methods for...

Results from a Full-Scale Smoke Alarm Sensitivity Study

April 9, 2010

Author(s)

Thomas G. Cleary

A series of 24 full-scale experiments was conducted to examine the effects of alarm type (photoelectric, ionization, and dual sensor), alarm location, fabric...

Charged-Particle Thermonuclear Reaction Rates: II. Tables and Graphs of Reaction Rates and Probability Density Functions.

April 9, 2010

Author(s)

C. Iliadis, R Longland, A E. Champagne, A. Coc, Ryan P. Fitzgerald

Numerical values of charged-particle thermonuclear reaction rates for nuclei in the A=14-40 region are tabulated. The results are obtained using a method, based...

TESTING OF RESIDENTIAL HOMES UNDER WIND LOADS

April 7, 2010

Author(s)

Emil Simiu, Girma Bitsuamlak, Arindam Chowdury, Ruilong Li, Amanuel Tecle, Dong Hun Yeo

Aerodynamic testing of low-rise structures is fraught with difficulties that can be the cause of large measurement errors resulting in the underestimation of...

The A 2E" - X 2A2' Transition of NO₃ Trapped in Solid Neon

April 7, 2010

Author(s)

Marilyn E. Jacox, Warren E. Thompson

NO3 has been stabilized in a neon matrix at 4.3 K in sufficient yield for detection of the absorptions between 7000 and 10000 cm-1 which arise from vibronically...

Origin of Electric Field Induced Magnetization in Multiferroic HoMnO₃

April 7, 2010

Author(s)

Benjamin Ueland, Jeffrey W. Lynn, Mark Laver, Y. J. Choi, S.-W. Cheong

We have performed polarized and unpolarized small angle neutron scattering experiments on single crystals of HoMnO 3 and have found that an increase in magnetic...

Multi-level Spectroscopy of Two-Level Systems Coupled to a dc SQUID Phase Qubit

April 7, 2010

Author(s)

T. A. Palomaki, S. K. Dutta, R M. Lewis, A J. Przybysz, B. K. Cooper, H. Kwon, J. R. Anderson, C. J. Lobb, F. C. Wellstood, Eite Tiesinga

We report spectroscopic measurements of discrete two-level systems (TLSs) coupled to a dc SQUID phase qubit with a 16 μm2 area Al/AlOx/Al junction. Applying...

A Numerical Study of the Flow of Bingham-Like Fluids In Two Dimensional Vane And Cylinder Rheometers Using a Smoothed Particle Hydrodynamic (SPH) Based Method

April 7, 2010

Author(s)

Huaning Zhu, Nicos Martys, Chiara C. Ferraris, Daniel De Kee

A vane rheometer is commonly used to determine the rheological properties of suspensions, colloids such as cement-based materials, many of which can be...

Teeth: Among Nature's Most Durable Biocomposites

April 6, 2010

Author(s)

Brian R. Lawn, James J. Lee, H Chai

This paper addresses the durability of natural teeth from a materials perspective. Teeth are depicted as 'smart' biocomposites, highly resistant to cumulative...

Measuring the extent of phase separation in P3HT/PCBM photovoltaic blends with 1H spin diffusion NMR spectroscopy

April 5, 2010

Author(s)

Ryan C. Nieuwendaal, Chad R. Snyder, Regis J. Kline, Eric K. Lin, David L. VanderHart, Dean M. DeLongchamp

Stress Response to Surface Alloying and De-Alloying During Under Potential Deposition of Pb on (111)-Textured Au

April 5, 2010

Author(s)

Jae W. Shin, Ugo Bertocci, Gery R. Stafford

The stress during Pb underpotential deposition (upd) on (111)-textured Au has been examined on a cantilever beam electrode in perchloric acid supporting...

Raman spectroscopic observation of dehydrogenation in ball-milled LiNH2-LiBH4-MgH2 nanoparticles

April 3, 2010

Author(s)

Jason Hattrick-Simpers, Chun Chiu, James E. Maslar, Leonid A. Bendersky, Michael E. Niemann, Sesha S. Srinivasan, Elias K. Stefanakos

In situ Raman spectroscopy was used to monitor the dehydrogenation of ball-milled mixtures of LiNH2 LiBH4 MgH2 nanoparticles. The as-milled powders were found...

Radio Wave Signal Propagation Into Large Building Structures Part 1: CW Signal Attenuation and Variability

April 2, 2010

Author(s)

Christopher L. Holloway, William F. Young, Galen H. Koepke, Dennis G. Camell, Catherine A. Remley

In this paper, we report on our investigation into radio communications problems faced by emergency responders in disaster situations. A fundamental challenge...

Radio Wave Propagation Into Large Building Structures, Part 2: Characterization of Multipath

April 2, 2010

Author(s)

Catherine A. Remley, Galen H. Koepke, Christopher L. Holloway, Chriss A. Grosvenor, Dennis G. Camell, John M. Ladbury, Robert T. Johnk, William F. Young

We report on measurements that characterize multipath conditions that affect broadband wireless communications in building penetration scenarios. Measurements...

Detection and spectral measurement of single photons in communication bands using up-conversion technology

April 2, 2010

Author(s)

Xiao Tang, Oliver T. Slattery, Lijun Ma

Quantum information systems are commonly operated in conventional communication bands (1310 and 1550 nm) over an optical fiber to take advantage of low...

Structural properties and thermal conductivity of Na1-xGe3+z

April 2, 2010

Author(s)

Winnie K. Wong-Ng, Stevce Stefanoski, James A. Kaduk, Qingzhen Huang, Clifford R. Bowers, George S. Nolas, Beekman Mathew

Structural analyses as well as low temperature thermal conductivity is reported for the new phase in the Na-Ge system, Na1-xGe3+z. Specimens were characterized...

Thermodynamics of the hydrolysis reactions of 1-naphthyl acetate, 4-nitrophenyl acetate, and 4-nitrophenyl -L-arabinofuranoside

April 2, 2010

Author(s)

Stephen R. Decker, Robert N. Goldberg, Brian Lang, William Michener

Microcalorimetry, high-performance liquid chromatography (HPLC), and liquid chromatography-mass spectrometry (LC-MS) have been used to conduct a thermodynamic...

Probing Single Nanometer-Scale Pores with Polymeric Molecular Rulers

April 2, 2010

Author(s)

Sarah E. Henrickson, Edmund A. DiMarzio, Qian Wang, Vincent M. Stanford, John J. Kasianowicz

It has been shown that individual molecules of single stranded DNA can be driven electrophoretically through a single Staphylococcus aureus ?-hemolysin ion...

Application of the Advanced Distillation Curve Method to the Development of Unleaded Aviation Gasoline

April 2, 2010

Author(s)

Bret Windom, Tara Lovestead, Thomas J. Bruno

The primary fuel used within the general aviation industry is a petroleum based gasoline blended with small amounts of tetraethyl lead (a lead-based additive...

Development of the Reference Model for a Residential Heat Pump System for Cooling Mode Fault Detection and Diagnosis

April 2, 2010

Author(s)

M Kim, Seok H. Yoon, Piotr A. Domanski, William V. Payne

Development of a reference model to predict the value of system parameters during fault free operation is a basic step for fault detection and diagnosis (FDD)...

Interference of Single Photons from Two Separate Semiconductor Quantum Dots

April 1, 2010

Author(s)

Edward B. Flagg, Andreas Muller, Sergey V. Polyakov, Alexander E. Ling, Glenn S. Solomon

We demonstrate and characterize interference between discrete photons emitted by two separate semiconductor quantum dot states in different samples excited by a...

A Second-Generation NIST Gravimetric Hygrometer

April 1, 2010

Author(s)

Christopher W. Meyer, Joseph T. Hodges, Gregory E. Scace, James R. Whetstone, R W. Hyland

A second-generation primary hygrometer has been completed at the National Institute of Standards and Technology (NIST). A gravimetric hygrometer measures...

E-mail Security: an Overview of Threats and Safeguards

April 1, 2010

Author(s)

Kevin M. Stine, Matthew A. Scholl

This publication discusses, at a high level, the ubiquitous threats facing email systems today and impresses the need to secure these systems. This article will...

A Simple Method to Assess the Thermal Mechanisms Associated with a Fire Suppressant

April 1, 2010

Author(s)

Cary Presser, C Avedisian, J. Stiehl, Richard E. Cavicchi

A new screening concept is presented to evaluate the thermal effectiveness of fire suppressants (liquids and gases) for solid surface cooling (without...

Epitaxial Graphenes on Silicon Carbide

April 1, 2010

Author(s)

Joseph A. Stroscio, Walt A. de Heer, Phillip First, Claire Berger, Thomas Seyller, Jeong-Sun Moon

The materials science of graphene grown epitaxially on the hexagonal basal planes of SiC crystals is reviewed. We show that the growth of epitaxial graphene on...

Separation of 26 toxaphene congeners and measurement in air particulate matter SRMs compared to technical toxaphene SRM 3067

April 1, 2010

Author(s)

Stacy S. Vander-Pol, John R. Kucklick, Stefan D. Leigh, Barbara J. Porter, Michele M. Schantz

Toxaphene is a complex technical mixture that has been found ubiquitously in the environment but has caused issues for analysis, especially of individual...

Was this page helpful?