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Displaying 45026 - 45050 of 74167
Donald H. Atha, W Kasprzak, C D. O'Connell, B A. Shapiro
We have analyzed previously three representative p53 single-point mutations by capillary-electrophoresis single-strand conformational polymorphism (CE-SSCP) . In the current study, we compared our CE-SSCP. In the current study, we compared our CE-SSCP
Phosphorus (31P) nuclear magnetic resonance (NMR) spectroscopy can provide important information about the structure and dynamics of nucleic acids in solution. The application of 31P NMR, however, often requires the difficult task of resolving and
A noncoherent limiter-discriminator receiver is often considered for the Bluetooth system because of its simplicity and low cost. While its performance is more than adequate for some channels, the results are significantly degraded in either an
We present results for uncertainties in noise-parameter measurements, obtained using a Monte Carlo simulation of the measurements. Sets of data were generated to simulate measurements on a low-noise amplifier, with given uncertainties in the underlying
The annual meeting of the American Crystallographic Association was held in Los Angeles, California, July 2126, 2001. The scientific sessions and the exhibit show were held in the Westin Bonaventure Hotel in downtownLos Angeles. The meeting was well
Neil M. Zimmerman, W H. Huber, Akira Fujiwara, Yasuo Takahashi
We have measured the long-term drift and the short-term 1/f noise in the charge offset Q0(t) in two Si-based single-electron tunneling transistors (SETTs). In contrast to metal-based SETTs, these devices show excellent charge stability, drifting by less
Daniel Josell, Daniel Wheeler, W H. Huber, John E. Bonevich, Thomas P. Moffat
We present a single variable first-order differential equation for predicting the occurrence of superconformal electrodeposition. The equation presumes that the dependence of deposition rate on surface coverage of accelerator is known (e.g., derived from
1,2-Pentadiene has been decomposed in single pulse shock tube experiments. There appear to be a large number of parallel decomposition and isomerization channels. The following rate expressions for isomerization in the temperature range 1100 K-1250 K and 2
J C. Meredith, A P. Smith, Alamgir Karim, Eric J. Amis
Combinatorial methodologies offer the ability to efficiently measure relevant chemical and physical properties over lare regimes of varible space. We review recent work in the development of combinatorial methods for polymer synthesis and characterization
A microcalorimeter and bolometer transfer standard are used as a national standard for microwave power from 50 MHz to 50 GHz. the microcalorimeter is used to determine the efficiency of the bolometric transfer standards and is similar to an existing Type N
ALARM, Alternative Life Safety Analysis for Retrofit Cost Minimization, is a software tool that helps prison facility managers and fire safety engineers achieve cost-effective compliance with the widely-used Life Safety Code of the National Fire Protection
Amorphous structures represent about 20% of the 60 or so different mineral types formed by the action of living organisms. Among these biogenic amorphous minerals, those that are composed principally of calcium and phosphate are most abundant in the teeth
The increase in processor speeds in the last few years has created a growing need for the accurate characterization of waveform propagation on lossy printed circuit board (PCB) transmission lines. In 1980, Gumerova, Efimov and Kostenko introduced an
O C. Wells, M Mcglashen-powell, Andras Vladar, Michael T. Postek
Chemical-mechanical planarization (CMP) is a process that gives a flat surface on a silicon wafer by removing material from above a chosen level. This flat surface must then be reviewed for scratches and other topographic defects. This inspection has been
AutoBid is designed to help police fleet administrators select the patrol vehicle that is best suited to the needs of their department. The system is based on vehicle performance test data for police patrol package models published annually by the Michigan
Validation of computational fluid dynamics (CFD) predictions for spray combustion application has been a challenging task due to difficulties in both modeling and experimental measurements. However, validation is considered to be an essential exercise for
V Soukhoveev, V Ivantsov, Y Melnik, Albert Davydov, Denis Tsvetkov, K Tsvetkova, I Nikitina, A Zubrilov, A Lavrentiev, Vladimir A. Dmitriev
Crystal growth from a melt or melt-solution is a widely accepted technique for industrial-scale production of important semiconductor materials. Recently we have demonstrated 50 mm diameter GaN crystals grown by melt-solution technique [1]. The crystals
Electrospray ionization Fourier transform ion cyclotron resonance (ESI FTICR) mass spectrometry and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry were applied to a complex silsesquioxane-siloxane copolymer resin
Silsesquioxanes or three-dimensional organosilicon resins, continue to generate much interest due to their unique structures and physical properties. Methyl silsesquioxanes can be formed at room temperature by simple acid catalyzed hydrolysis and
Faceting in a polyhedral rutile particle was modeled from transmission electron microscopy images. A relatively new double-tilt, rotate transmission electron microscope (TEM) sample holder was used to manipulate the particle. Using this holder, it was
The next two issues of the International Journal of Chemical Kinetics are dedicated to Prof. Simon H. Bauer on the occasion of his 90th birthday. These issues contain a number of papers by his students and colleagues who have built on his pioneering
This ITL Bulletin describes two projects in the computer forensics arena and provides guidance on the use of the products developed from them. The first project, the National Software Reference Library (NSRL), describes a database of known file
For more than one hundred years, the continuous theme underlying the NBS / NIST staff contribution to the crystallography of building materials has been the development of an improved understanding of concrete materials performance. These efforts serve to
Correlations for convective heat transfer coefficients are reported for two-phase flow of nitrogen and hydrogen under low mass and heat flux conditions. The range of flow rates, heat flux and tube diameter are representative of thermodynamic vent systems
K L. Ngai, L R. Bao, Albert F. Yee, Christopher Soles
Positron annihilation lifetime spectroscopy (PALS) measurements are performed on four widely studied small molecule glass-formers (ortho terphenyl, glycerol, propylene glycol and propylene carbonate) over a wide temperature range above and below the glass