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Displaying 44701 - 44725 of 73929

Development of Y STR Megaplex Assays

December 1, 2001
Author(s)
R Schoske, John Butler, Peter Vallone, Margaret C. Kline, M. Prinz, A J. Redd, M F. Hammer
Y Chromosome short tandem repeat markers have a number of applications in human identity testing including typing the perpetrator of sexual assault cases without differential extraction and tracing paternal lineages for missing person investigations. In

Dispersion and Nucleating Effects of Clay Fillers in Nanocomposite Polymer Films

December 1, 2001
Author(s)
V Ferreiro, G Schmidt, Charles C. Han, Alamgir Karim
Nanocomposite polymeric materials offer unique properties such as mechanical, electrical, thermal, etc. Such property enhancements are induced not only by the physical presence of the filler but also by the interaction of the polymer with the filler and

Estimating the RMS of a Wavefront and Its Uncertainty

December 1, 2001
Author(s)
Angela Davies, M. Levenson
The root mean square (RMS) of the surface departure or wavefront deformation is a common value to extract from an optical test. The RMS may be a tolerance an optical fabricatior is trying to meet or it may be a parameter used by an optical designer to

Field Enhancement in Apertureless Near-Field Scanning Optical Microscopy

December 1, 2001
Author(s)
J L. Bohn, David J. Nesbitt, Alan Gallagher
The near field of an apertureless near-field scanning optical microscopy probe is investigated with a multiple-multipole technique to obtain optical fields in the vicinity of a silicon probe tip and a glass substrate. The results demonstrate that electric

Fresh Concrete Rheology - Recent Developments

December 1, 2001
Author(s)
Chiara F. Ferraris, F De Larrard, Nicos Martys
The design of concrete with specified properties for an application is not a new science, but it has taken on a new meaning with the wide use of high performance concretes. The following properties are related to fresh concrete: ease of placement and

Fundamentals of Mass Spectrometry

December 1, 2001
Author(s)
Vladimir G. Zaikin, Alexey V. Varlamov, Anzor I. Mikaia, Nikolay A. Prostakov
This tutorial book explains principles of mass spectrometry (such as ionization of molecules, fragmentation of ions, separation of ions, construction of mass spectrometers) and methods of ionization (electron impact, chemical, electrospray, fast atom

Heavy Ion Induced Soft Breakdown of Thin Gate Oxides

December 1, 2001
Author(s)
J. F. Conley, John S. Suehle, A. H. Johnston, Bin Wang, T Miyahara, Eric M. Vogel, J B. Bernstein
Heavy ion induced soft and hard breakdown are investigated in thin gate oxides as a function of LET, fluence, and voltage applied during irradiation. It is found that post-irradiation oxide conduction is well described by the Sune quantum point contact

Hidden in Plain Sight: Calcium Fluoride's Intrinsic Birefringence

December 1, 2001
Author(s)
John H. Burnett, Zachary H. Levine, Eric L. Shirley
We discuss the phenomena of intrinsic birefringence in cubic crystals that we first characterized experimentally and theoretically in ultraviolet optical materials. We analyze the wavelength dependence, the angular dependence, and symmetry of the effect

High Resolution Infrared Spectra of the N 2 N 3 , N 4 , and 2N 3 Bands of 32 S 16 O 3

December 1, 2001
Author(s)
A G. Maki, Thomas A. Blake, R L. Sams, N Vulpanovici, J Barber, E T. Chrysostom, Tony Masiello, J Nibler, A Weber
New measurements are reported for the infrared spectrum of sulfur trioxide, 32S 16O 3, with resolution ranging from 0.0015 cm -1 to 0.0025 cm -1. Rovibrational constants have been measured for the fundamentals Ņ 2, Ņ 3, and Ņ 4, and the overtone band 2Ņ 3

High-Speed, High-Efficiency. Large-Area Resonant Cavity Enhanced p-i-n Photodiodes for Multimode Fiber Communications

December 1, 2001
Author(s)
M. Gvkkavas, O. Dosunmu, M. S. {Umlat}nl{umlat}, G. Ulu, Richard Mirin, David H. Christensen, E. Vzbay
In this letter, we report AlGaAs-GaAs p-i-n photodiodes with a 3-dB bandwidth in excess of 10 GHz for devices as large as 60-υm diameter. Resonant cavity enhanced photodetection is employed to improve quantum efficiency, resulting in more than 90% peak

Hybrid Fractal Zerotree Wavelet Image Coding

December 1, 2001
Author(s)
R E. Van Dyck, T Kim, D J. Miller
In this paper, a hybrid fractal zerotree wavelet (FZW) image coding algorithm is proposed. The algorithm couples a zerotree-based encoder, such as the embedded zerotree wavelet (EZW) coder or set partitioning in hierarchical trees, and a fractal image

Interoperability Standards in the Semantic Web

December 1, 2001
Author(s)
Steven R. Ray
The growth in the use of the Internet brings with it an increase in the number of interconnections among information systems supporting the manufacturing supply chain as well as other businesses. Each of these interconnections must be carefully prescribed

Intrinsic Birefringence in Calcium Fluoride and Barium Floride

December 1, 2001
Author(s)
John H. Burnett, Zachary H. Levine, Eric L. Shirley
We have measured an intrinsic birefringence in calcium fluoride in the ultraviolet for wavelengths from 365 nm down to 156 nm, and compared these results with theory and calculations. The measured effect is largest for propagation in the [110] direction

Intrinsic Viscosity and the Electric Polarizability of Arbitrarily Shaped Objects

December 1, 2001
Author(s)
M Mansfield, Jack F. Douglas, Edward Garboczi
The problem of calculating the electrical polarizability tensor αe of objects of arbitrary shape has been reformulated in terms of path integration and implemented computationally. The method simultaneously yields the electrostatic capacity C and the
Displaying 44701 - 44725 of 73929
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