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Displaying 43526 - 43550 of 73778

Identification and Characterization of a Human DNA Glycosylase for Repair of Modified Bases in Oxidatively Damaged DNA

March 19, 2002
Author(s)
T. K. Hazra, T. Izumi, I Boldough, B Imhoff, Y W. Kow, Pawel Jaruga, Miral M. Dizdar, Somenath Mitra
8-oxoguanine (8-oxoG), ring-opened purines (formamidopyrimidines or Fapys), and other oxidized DNA base lesions generated by reactive oxygen species, are often mutagenic and toxic, and have been implicated in the etiology of many diseases including cancer

Immobilization of DNA Hydrogel Plugs in Microfluidic Channels

March 15, 2002
Author(s)
K G. Olsen, David J. Ross, Michael J. Tarlov
Acrylamide-modified DNA probes are immobilized in polycarbonate microfluidic channels via photopolymerization in a polyacrylamide matrix. The resulting polymeric, hydrogel plugs are porous under electrophoretic conditions and hybridize with fluorescently

User-Centered Evaluations of Ubicomp Applications

March 12, 2002
Author(s)
Jean C. Scholtz, L Arnstein, M Kim, T Kindberg, Sunny Consolvo
This paper describes some properties of ubiquitous computing applications that warrant user-centered evaluation and describes a number of approaches carried out in recent studies.

Agent Technology: Feasibility for Business and Manufacturing Application

March 1, 2002
Author(s)
Elizabeth N. Fong, Nenad Ivezic, R Korchak, Y Peng, Thomas R. Rhodes
Electronic commerce (e-commerce) may be defined as the entire set of processes that support transaction activities on a network and involve information analysis. These activities spawn product information and display events, services, providers, consumers

Broadband Direct Detection Submillimeter Spectrometer with Multiplexed Superconducting Transition Edge Thermometer Bolometers

March 1, 2002
Author(s)
D. J. Benford, Troy A. Ames, Jay A. Chervenak, S. H. Mosely, Rick A. Shafer, Johannes G. Staguhn, George M. Voellmer, Francois Pajot, Cyrille Rioux, Thomas G. Phillips, Bruno Maffei, Kent D. Irwin
We present performance results based on the first astronomical use of multiplexed superconducting bolometers. The Fabry-Perot Interferometer Bolometer Research Experiment (FIBRE) is a broadband submillimeter spectrometer that achieved first light in June

CD Reference Materials for Sub-Tenth Micrometer Applications

March 1, 2002
Author(s)
Richard A. Allen, Michael W. Cresswell, William F. Guthrie, Loren W. Linholm, H Bogardus, J V. Martinez de pinillos, B A. Am ende, Christine E. Murabito, M H. Bennett
Prototype linewidth reference materials with Critical Dimensions (CDs) as narrow as 70 nm have been patterned in (110) silicon-on-insulator films. The sidewalls of the reference features are parallel, normal to the substrate surface, and have almost

Characterization of UV Detectors at SURF III (invited)

March 1, 2002
Author(s)
Ping-Shine Shaw, Thomas C. Larason, R Gupta, Keith R. Lykke
The Synchrotron Ultraviolet Radiation Facility (SURF III) at the National Institute of Standards and Technology provides a unique research opportunity in precision measurement with its continuous and calculable radiation stretching from the soft x-ray to

Creep of Lanthanum Gallate

March 1, 2002
Author(s)
William E. Luecke, T R. Armstrong
Strontium- and magnesium-doped lanthanum gallate (LSGM) was deliberately prepared to give A-site deficient non-stoichiometry with compositions (La 0.9Sr 0.1)z(Ga 0.8Mg 0.2)O 3-delta (z =1.0,0.98, and 0.95). Creep tests in four-point 950 C 75 Mpa in air
Displaying 43526 - 43550 of 73778
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