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Displaying 42601 - 42625 of 73461

Grain Growth in Relaxor Ferroelectrics

August 1, 2002
Author(s)
J Blendell, Jay S. Wallace
The mechanisms controlling normal and exaggerated grain growth in lead magnesium niobate - lead titanate (PMN - PT) ceramics have been investigated by varying the PbO-based liquid phase volume fraction, the PT content and the MgO stoichiometry. There is a

Haptics in Virtual Nanoscale Assembly

August 1, 2002
Author(s)
Kevin W. Lyons, Yung-Tsun Lee
Assembly operations at the nanometer scale differ from the conventional scale (greater than millimeter)assembly operations in two important aspects. Firstly, the continuium assumption in the assembly components does not apply. We clearly have to account

High-Resolution Crystal Structures of Erythrina Cristagalli Lectin in Complex With Lactose and 2'-a-L-Fucosyllactose and Correlation With Thermodynamic Binding Data

August 1, 2002
Author(s)
C Svensson, S Teneberg, C L. Nilsson, A Kjellberg, Frederick P. Schwarz, N Sharon, U Krengel
The primary sequence of Erythrina cristagalli lectin (ECL) was mapped by mass spectrometry, and the crystal structures of the lectin in complex with lactose and 2'-α-L-fucosyllactose were determined at 1.6 and 1.7 resolution, respectively. The two

HIV Protease Structural Database

August 1, 2002
Author(s)
Veerasamy Ravichandran, J Vondrasek, G L. Gilliland, Talapady N. Bhat, A Wlodawer
The HIV Protease Database (HIVdb) is a web-based archive for HIV protease structural information. HIVdb contains experimentally determined three-dimensional structures of human immunodeficiency virus type 1 (HIV-1), human immunodeficiency virus type 2 (HIV

Infrared Spectra of the Noble Gases

August 1, 2002
Author(s)
Craig J. Sansonetti, M M. Blackwell, Edward B. Saloman
The Atomic Spectroscopy Data Center of the National Institute of Standards and Technology (NIST) is currently compiling spectra and energy levels of the noble gases. A review of the literature has shown that there is no comprehensive experimental

MALDI MS Characterization of Covalent Cationized Polyethylene

August 1, 2002
Author(s)
Sheng Lin-Gibson, D L. Brunner, David L. VanderHart, Barry J. Bauer, B M. Fanconi, Kathleen M. Flynn, William E. Wallace
Polyolefins, saturated hydrocarbon polymers such as polyethylene (PE) and polypropylene, are, by production volume, the most widely used of all A new method for the mass spectrometry of saturated polyolefins whereby an organic cation is covalently bonded

Measured cross sections and ion energies for a CHF 3 discharge.

August 1, 2002
Author(s)
B. Peko, R. Champion, MVVS. Rao, James K. Olthoff
Trifluoromenthane (CHF 3) is used in semiconductor plasma processing chambers to achieve high etch selectivity of an oxide layer over a silicon substrate. Such surface etching is governed by the ion and molecule fluxes near the surface, the concentrations

MeasuringThe Modulus of Polymer Films by Strain-Induced Buckling Instabilities

August 1, 2002
Author(s)
Christopher M. Stafford, C Harrison, Alamgir Karim, Eric J. Amis
We present a high-throughput technique for measuring the Young s modulus of thin polymer films. This technique exploits a strain-induced buckling instability observed in films supported on elastomeric substrates. By employing a combinatorial polymer film

Metal Detector Studies: Research Materials

August 1, 2002
Author(s)
James R. Baker-Jarvis, Raian K. Kaiser, Michael D. Janezic, Nicholas Paulter, Ken L. Stricklett
The purpose of the work described in this report is to develop and characterize materials that mimic the electromagnetic characteristics of the human body. The materials will be used to simulate the relevant electromagnetic properties of the human body

Modified Allard Method for Effective Intensity of Flashing Lights

August 1, 2002
Author(s)
Yoshihiro Ohno, D Couzin
For the measurement of effective intensity of flashing lights, the Blondel-Rey, Blondel-Rev-Douglas, Form Factor, and Allard methods are adopted in various applications. These methods produce significantly different results depending on the pulse waveforms

NIST CFTT: Testing Disk Imaging Tools

August 1, 2002
Author(s)
James R. Lyle
There is a critical need in the law enforcement community to ensure the reliability of computer forensic tools. A capability is required to ensure that forensic software tools consistently produce accurate and objective test results. The goal of the

NIST CFTT: Testing Disk Imaging Tools

August 1, 2002
Author(s)
James R. Lyle
There is a critical need in the law enforcement community to ensure the reliability of computer forensic tools. A capability is required to ensure that forensic software tools consistently produce accurate and objective test results. The goal of the

Numerical Modeling of an Integrating Sphere Radiation Source

August 1, 2002
Author(s)
A Prokhorov, Leonard Hanssen
Integrating spheres are often used as calibration sources providing uniform radiance within solid angle and/or uniform irradiance at a distance. The best performance in such a system can be achieved if one is able to evaluate as well as predict important
Displaying 42601 - 42625 of 73461
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