An official website of the United States government
Here’s how you know
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.
Bruce A. Benner Jr, J V. Goodpaster, J A. DeGrasse, L A. Tully, Barbara C. Levin
Hair is routinely collected at crime scenes for subsequent forensic analysis, typically involving inspection by microscope techniques to determine any...
Dylan F. Williams, Bradley K. Alpert, Uwe Arz, Hartmut Grabinski
Abstract: We compute power-voltage, power-current, and causal definitions of the characteristic impedance of microstrip and coplanar-waveguide transmission...
The fundamental principles for chemical analysis by optical methods are established. However, only recent advances in instrumentation and spectroscopic...
It has been postulated that the in vivo resorption rates of calcium-phosphate bone-graft materials are closely related to their dissolution rates in...
In this article an accurate confidence interval is derived when the results of a small number of different experimental methods are combined for the...
The NIST Digital Library of Mathematical Functions (DLMF) Project, begun in 1997, is preparing a handbook and Web site intended for wide communities of users...
Bluetooth is a cable replacement technology for Wireless Personal Area Networks. It is designed to support a wide variety of applications such as voice...
The atomic force microscope is used to explore the nature of fracture surfaces in soda lime silicate glass formed near or below the apparent crack growth...
T J. Haugan, Winnie K. Wong-Ng, Lawrence P. Cook, Mark D. Vaudin, L Swartzendruber, Paul N. Barnes
Partial-melt processing of Bi2+xSr2-x-yCa1+yCu2O8+d (Bi-2212) thick film conductors with additions of nanophase Al2O3 on Ag foils was studied for dual purposes...
In this paper we discuss the application of pulsed laser deposition (PLD) to combinatorial materials research on inorganic thin films. The modifications to an...
At high temperatures, polycrystalline materials often suffer creep fracture under prolonged loading conditions. Microstructural examinations revealthat...
Detailed ferromagnetic resonance measurements on the thin Ni{ 80}Fe{ 20} films are described that determine characteristics of intrinsic damping and the effects...
Our first-principles calculations demonstrate that C 60-nB n/C 60-mNm molecules could be engineered acceptor/donor pair needed for molecular electronics by...
Electron and hole states of multishell CdS/HgS/CdS quantum-dot quantum-well nanocrystals are determined by use of atomistic tight-binding theory. Single...
We discuss the dynamics of a Bose-Einstein condensate initially loaded into every third site of an optical lattice using a description based upon discrete...
H 2O-containing permeation tubes are a key component of permeation tube humidity generators (PTGs). These devices are widely used for calibrating atmospheric...
John T. Elliott, Curtis W. Meuse, Vitalii I. Silin, Susan T. Krueger, John T. Woodward IV, T Petralli-Mallow, Anne L. Plant
Biological membranes are complex and dynamic structures. The biological functions associated with membranes involve a number of different molecular species, and...
In this study, the ability of a new gas-liquid entraining device was investigated to improve the supercritical fluid extraction efficiency of iron removal from...
Joseph Fu, Hui Zhou, John A. Kramar, Richard M. Silver, S Gonda
Using scanning probe microscopy, we have examined the surfaces produced by etching several different vicinal Si(111) samples in NH 4F aqueous solution. In...
The Research Advisory Committee (RAC) at the National Institute of Standards and Technology (NIST) in its 2000 Annual Report to the NIST Director expressed...
We present a method for calculating the inverse of the dielectric matrix in a solid using a Band-Lanczos algorithm. The method produces a multi-pole...
S Devotta, A S. Padalkar, N K. Sane, Piotr A. Domanski, N N. Sawant
This paper presents the results of simulation of heat exchangers of an HCFC-22 window air conditioner retrofitted with R-407C. The test conditions considered...
Shawn W. Staker, Christopher L. Holloway, Melinda Piket-May
This paper presents the incorporation of material dispersion into ADI-FDTD, ADI-FDTD is an uncontionally stable mathod, allowing the time step to be increased...
The influence of poly (acrylic acid) PAA) and poly(vinyl alcohol) PVA) on Ba dissolution at the BaTiO 3-aqueous solution interface was investigated. Incongruent...
F Lofaj, Gerald V. Blessing, Sheldon M. Wiederhorn
The ultrasonic velocity technique was used for non-destructive quantification of creep damage during interrupted tensile creep tests at 1400 degrees}C in an...