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Displaying 4676 - 4700 of 13217

Cross Sectional Determination of Perfluorinated Compounds in the Upper Mississippi River Basin

May 4, 2010
Author(s)
Jessica L. Reiner, Shoji F. Nakayma, Mark J. Strynar, Amy D. Delinsky, Andrew B. Lindstrom
… sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in surface water, little has been published on the importance … sample collection, storage, and preservation procedures. In this study, an existing method was improved for use in a large scale cross sectional study of the Upper …

Influence of Ti and Ta doping on the irreversible strain limit of ternary Nb 3 Sn superconducting wires made by the restacked-rod process

April 1, 2010
Author(s)
Najib Cheggour, Loren F. Goodrich, Theodore C. Stauffer, Jolene D. Splett, Xifeng Lu, A. K. Ghosh, G. Ambrosio
… with Ti as compared to Ta. Whereas Ta-alloyed Nb 3 Sn in RRP wires showed permanent damage to its current-carrying … an intrinsic strain as small as 0.04 %, Ti-doped Nb 3 Sn in RRP strands exhibit a remarkable reversibility up to a … RRP wires more suitable for high-field magnets used in particle accelerators and nuclear magnetic resonance …

Relating Complex Fluid Composition and Thermophysical Properties with the Advanced Distillation Curve Approach

March 17, 2010
Author(s)
Thomas J. Bruno, Lisa S. Ott, Tara M. Lovestead, Marcia L. Huber
… Complex fluids have long posed a significant challenge in our ability to characterize and model fluid properties. … with many components that can differ significantly in polarity and polarizability. The penultimate complex fluid … equation of state development for the complex fluids. In addition to chemical characterization, the approach …

Normal-state conductance used to probe superconducting tunnel junctions for quantum computing

March 3, 2010
Author(s)
David P. Pappas, Jeffrey S. Kline, Seongshik Ohy, Carlos Chapraro, Richard Bavier, Yong Kim, Eunyoung Kim
… behavior predicted by the WKB approximation models. In the p-Al/a-AlO/p-Al junction, we observed enhancement of … On the other hand, such Al O vibration modes were missing in the epitaxial e-Re/e-AlO/p-Al junction. This suggests that … and the interface between the electrode and the barrier. In the e-V/e-MgO/p-V junction, which is one of the candidate …

Transport Characterization in Nanowires Using an Electrical Nanoprobe

January 22, 2010
Author(s)
Albert A. Talin, Francois Leonard, Brian Swartzentruber, Samuel T. Picraux, Maria Eugenia Toimil-Molares, Jeffrey Cederberg, Xiaorui Wang, Stephen Hursee, A. Rishinaramangalum
… Semiconductor Science and Technology … Transport Characterization in Nanowires Using an Electrical Nanoprobe …

Vapor Pressure Measurements on Low-Volatility Terpenoid Compounds by the Concatenated Gas Saturation Method

January 1, 2010
Author(s)
Jason A. Widegren, Thomas J. Bruno
… atmospheric oxidation of monoterpenes plays a central role in the formation of secondary organic aerosols (SAOs), which … method uses several pairs of saturators and traps linked in series. Consequently, several measurements of vapor … compound, which is important for ensuring data quality. In this paper we demonstrate the use of the concatenated gas …

The effect of strain on grains and grain boundaries in YBa2Cu3O7-d coated conductors

December 9, 2009
Author(s)
Daniel C. van der Laan, John (Jack) W. Ekin, Timothy J. Haugan, Paul N. Barnes, Dmytro Abraimov, Fumitake Kametani, David C. Larbalestier, Marty Rupich
… The role of grains and grain boundaries in producing reversible strain effects on the transport … of full-width coated conductors with that of samples in which current transport was limited to a few or single … effective tensile strain at the grain boundaries than in the grains. The really striking result is that the GB …

NMR-Based Microbial Metabolomics and the Temperature-Dependent Coral Pathogen Vibrio coralliilyticus

September 18, 2009
Author(s)
Daniel W. Bearden, Arezue Boroujerdi, Tracey B. Schock, Alexander Meyers, Elizabeth C. Pollock, Sara Lien Huynh, Maria Vizcaino, Pamela J. Morris
… has been linked to coral disease globally (for example in the Mediterranean, Caribbean, Red Sea and Indian Ocean), … The temperature-dependence of V. coralliilyticus in regard to its metabolome was investigated. Nuclear … (PCA), and significant temperature- based separations in PC1, PC2, and PC3 dimensions were observed. Betaine, …

Applications of artificial neural networks in optical performance monitoring

August 15, 2009
Author(s)
Jeffrey A. Jargon, Xiaoxia Wu, Ronald Skoog, Loukas Paraschis, Alan Willner
… (PMD) from eye-diagram parameters is shown via simulation in both 40 Gb/s on-off keying (OOK) and differential … CD, and PMD from eye-diagram and eye-histogram parameters in a 3-channel 40 Gb/s DPSK wavelength- division multiplexing … the ANNs are also shown for simultaneous identification of in-phase/quadrature (I/Q) data misalignment and data/carver …

A robust algorithm for eye-diagram analysis

November 1, 2008
Author(s)
Jeffrey A. Jargon, Paul D. Hale, Chih-Ming Wang
… robust, least-median-of-squares (LMS) location estimator. In contrast to commonly used histogram techniques, the LMS … root-mean-square jitter, and perform eye-mask alignment. In addition to describing our algorithm in detail, we compare results computed with this method to …

Accuracy Issues in Chemical and Dimensional Metrology in the SEM and TEM

October 16, 2008
Author(s)
J H. Scott
… In this work computer simulations are used to understand systematic errors and accuracy concerns in both dimensional and chemical metrology in the scanning electron microscope (SEM) and transmission … Measurement Science & Technology … Accuracy Issues in Chemical and Dimensional Metrology in the SEM and TEM …

Applications of Micro-Ring Resonator Filter Devices

October 16, 2008
Author(s)
S T. Chu, B E. Little, Y Kokubun, W Pan
Recently reported micro-ring resonator filters have demonstrated their compactness and signal processing functions. These features are attractive for large-scale integrated photonic circuits. This paper reviews the development and discusses the potential

Hydrolysis of Carbonyl Sulfide: A Potential Source of Downstream Sour Gas

October 16, 2008
Author(s)
Thomas J. Bruno, W C. Andersen, K I. Henning
… rbonyl sulfide (COS), which occurs as an impurity in commercial sources fo propane can hydrolyze in the presence of water to form hydrogen sulfide (H2S) and … the hydrolysis product H2S is corrosive, especially in the presence of water. In this paper, we summarize the …

In-Situ Visualization of Polymer Blends Processing: Influence of Viscosity Ratio and Surfaces

October 16, 2008
Author(s)
Kalman Migler, Erik K. Hobbie, F Qiao
… viscosity ratio, surfaces and shear on droplet morphology in immiscible polymer blends during extrusion. These in-line experiments are performed in an optical slit die situated at the exit of a twin screw … Rubber Chemistry and Technology … In-Situ Visualization of Polymer Blends Processing: Influence …

Towards A Simpler Bayesian Guide to the Expression of Uncertainty in Measurement

October 16, 2008
Author(s)
Raghu N. Kacker
… The impact of the Guide to Expression of Uncertainty in Measurement is spreading from the national measurement … should make the Guide more appealing to those interested in philosophical coherence. The Guide is not limited by the … Measurement Science & Technology …
Displaying 4676 - 4700 of 13217
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