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Displaying 36651 - 36675 of 74242

Uncertainties in Scaling Factors for Ab Intio Vibrational Frequencies

August 26, 2005
Author(s)
K Irikura, R Johnson, Raghu N. Kacker
The n-qubit concurrence canonical decomposition (CCD) is a generalization of the two-qubit canonical decomposition SU(4)=[SU(2) (x) SU(2)] ? [SU(2) (x) SU(2)], where ? is the commutative group which phases the maximally entangled Bell basis. A prequel

A Microstructure Fiber Two Photon Source With Conjugate Laser Pumps

August 25, 2005
Author(s)
Jingyun Fan, Alan L. Migdall, L Wang
We present a systematic experimental study of generating correlated photon pairs using a reversed degenerate four-wave mixing process. By overlapping a pair of parallel- (or cross-) polarized laser pump pulses at conjugate frequencies in a microstructure

Investigation of 3D Tyrosine-Derived Polycarbonate Scaffold for Tissue Engineering

August 25, 2005
Author(s)
J S. Stephens, Tithi Dutta Roy, Joy P. Dunkers, Aarti Rege, J Kohn
A library of tyrosine-derived polycarbonates of have been developed that share a structurally identical backbone with a rich chemical and structural diversity, which depend solely on the pendent ester substituent (Scheme 1).1 The physical and chemical

Progress Toward the Second-Generation Atomic Fountain Clock at NIST

August 23, 2005
Author(s)
Elizabeth Donley, M O. Tataw, F Levi, Steven R. Jefferts, Thomas P. Heavner
We present results on the performance of two important subsystems for NIST -F2 -the second-generation atomic fountain clock at NIST. Firstly, we demonstrate the efficient capture of cesium atoms from a low-velocity intense source (LVIS) of atoms into an

Correction of Stray Light in Spectrographs: Implications for Remote Sensing

August 22, 2005
Author(s)
Yuqin Zong, Steven W. Brown, Bettye C. Johnson, Keith R. Lykke, Yoshihiro Ohno
Spectrographs are used in a variety of applications in the field of remote sensing for radiometric measurements due to the benefits of measurement speed, sensitivity, and portability. However, spectrographs are single grating instruments that are

Implementing Electronic Materials Data Exchange

August 18, 2005
Author(s)
Eric D. Simmon, Arthur Griesser
Adding automation to your materials declaration process will set, simplify, and streamline the materials declaration process. Whether your company is a component supplier, board manufacturer or assembly services company, the structure of how you manage

Dynamic Modeling and Vibration Analysis of a UHV Scanning Tunneling

August 17, 2005
Author(s)
Sumanth B. Chikkamaranahalli, R. R. Vallance, Bradley N. Damazo, Richard M. Silver, James D. Gilsinn
Techniques based on scanning probe microscopy (SPM) are used to fabricate surface structures with dimensions ranging from 10 - 100mm. These structures have been fabricated and imaged using a scanning tunneling microscope (STM), and the STM requires the tip

Linear and Generalized Linear Models for Analyzing Face Recognition Performance

August 17, 2005
Author(s)
J. R. Beveridge, Geof H. Givens, Bruce A. Draper, P. Jonathon Phillips
This paper introduces linear models (LM), generalized linear models (GLM), and generalized linear mixed models (GLMM) for analyzing performance of face recognition algorithms. These three statistical techniques are applied to analyzing the affect of

Microfluidic interfacial tensiometry

August 17, 2005
Author(s)
Steven D. Hudson, J Cabral, Kathryn L. Beers, W Goodrum, Eric J. Amis
A microfluidic approach to measure interfacial tension of immiscible fluids rapidly is reported. This method rests upon quantitative real-time analysis of two-phase flow and drop-shape dynamics. Drops of prescribed dimension and spacing are produced

Resonant microwave power absorption and relaxation of the energy levels of the molecular nanomagnet Fe 8 using superconducting quantum interference device-based magnetometry

August 15, 2005
Author(s)
Brant Cage, Stephen E. Russek, David Zipse, Micah North, Naresh S. Dalal
Energy levels and saturation of molecular nanomagnet Fe 8 crystals were investigated using a 95 and 141 GHz electron paramagnetic resonance (EPR) technique based on a standard superconducting quantum intererence device (SQUID) magnetometer. The technique

Standards and Standardization of Molecular Diagnostics

August 15, 2005
Author(s)
J P. Jakupciak, C D. O'Connell
DNA has become a major target for clinical laboratory testing over the past 5 years, and RNA testing is emerging for infectious disease and gene expression (1). To normalize laboratory results across different technology platforms as well as between
Displaying 36651 - 36675 of 74242
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