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Topic Area: Bioscience

Displaying records 321 to 330 of 467 records.
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321. MAGF: A New Method for High-performance Focusing of Uncharged and Hydrophobic Analytes
Topic: Bioscience & Health
Published: 10/1/2003
Authors: David J Ross, K M. Balss, P B. Howell, Wyatt N Vreeland
Abstract: A new method for analyte focusing is demonstrated that can be used for concentration and separation of analytes based upon their affinity for a micellar phase. The method works by producing (through the application of a temperature gradient) a gradie ...

322. Crystal Structure of Escherichia cole Protein ybgl, a toroidal Structure with a Dinuclear Metal Site
Topic: Bioscience & Health
Published: 9/30/2003
Authors: Jane E Ladner, G Obmolova, A Teplyakov, A J Howard, P P Khil, R D Camerini-Otero, G L. Gilliland

323. Fluorescence Thermometry in Microfluidics
Topic: Bioscience & Health
Published: 9/29/2003
Authors: David J Ross, Laurie E Locascio
Abstract: Two techniques are described for the measurement of fluid temperatures in microfluidic systems based on temperature-dependent fluorescence. In the first technique, a single, strongly temperature-dependent fluorophore, rhodamine B, is used as the basi ...

324. DNA Base Damage by the Antitumor Agent 3-Amino-1,2,4-Benzotriazine 1,4-Dioxide (Tirapazamine)
Topic: Bioscience & Health
Published: 9/24/2003
Authors: M Birincioglu, Pawel Jaruga, G Chowdhury, H Rodriguez, M Miral Dizdar, K Gates
Abstract: Tirapazamine is a bioreductively activated DNA-damaging agent that selectively kills the hypoxic cells found in solid tomors. This compound shows great clinical promise and is currently being examined in a variety of clinical trails, including sever ...

325. Interdiffision in Polystyrene and End-Functional Polystyrene Thin Films Near a Solid Surface
Topic: Bioscience & Health
Published: 9/10/2003
Authors: Chengqing C. Wang, Vivek M Prabhu, Christopher L Soles, B D. Vogt, Wen-Li Wu, Eric K Lin, Sushil K. Satija
Abstract: Polymer interdiffusion near the polymer/solid interface is studied using neutron reflectometry. Bilayers of hydrogenated polystyrene (hPS) and deuterated polystyrene (dPS) or hydrogenated dicarboxy terminated polystyrene (hPS(COOH)2) and dPS are prep ...

326. The Development of Reduced Size STR Amplicons as Tools for Analysis of Degraded DNA
Topic: Bioscience & Health
Published: 9/1/2003
Authors: John M Butler, Y Shen, B. R. McCord

327. Renewable Standard Reference Materials for the Detection of TP53 Mutations
Topic: Bioscience & Health
Published: 8/1/2003
Authors: C D O'Connell, L A. Tully, J M Devaney, M Marino, J P. Jakupciak, Donald H Atha

328. A Superconducting Microwave Power Limiter for Protection of High-Performance Superconducting Electronics
Topic: Bioscience & Health
Published: 7/11/2003
Authors: James C Booth, Kenneth Leong, Susan Schima
Abstract: We report on the development of a microwave power limiter based on high temperature superconductor technology. The power limiter takes the form of a 50 Ω coplanar waveguide transmission line that can be reversibly driven into the normal state as ...

329. Kinetic Inductance Contributions to the Nonlinear Response of Superconductors at Microwave Frequencies
Topic: Bioscience & Health
Published: 7/11/2003
Authors: James C Booth, Kenneth Leong, Susan Schima
Abstract: We demonstrate how nonlinear effects in high temperature superconducting thin films can be quantified based on a current-dependent penetration depth {lambda}(J). Using an assumed form for {lambda}(J), we calculate the expected third-order harmonic si ...

330. A Self-Attenuating Superconducting Transmission Line for Use as a Microwave Power Limiter
Topic: Bioscience & Health
Published: 6/1/2003
Authors: James C Booth, David A Rudman, Ronald H. Ono
Abstract: We have designed, fabricated, and tested a microwave power limiter based on high temperature superconductor thin film technology. The signal limiter takes the form of a 50 {Ohm} coplanar waveguide transmission line that is reversibly driven from the ...

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