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Chemistry

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Displaying 1126 - 1150 of 1924

The IUPAC Chemical Identifier

July 1, 2002
Author(s)
Stephen E. Stein, Stephen R. Heller, Dmitrii V. Tchekhovskoi
The author presented two talks at the IUPAC/CAS conference of Chemical identifiers and XML in Chemistry, on July 1, 2002 in Columbus Ohio. He will be sending powerpoint presentations of these talks, both concerning on-going projects at NIST, to IUPAC for

Free Radical-Induced Damage to DNA: Mechanisms and Measurement

June 1, 2002
Author(s)
M. Dizdaroglu, Pawel Jaruga, M Birincioglu, H Rodriguez
Free radicals are produced in cells by cellular metabolism and by exogenous agents. These species react with biomolecules in cells including DNA. The resulting damage to DNA which is also called oxidative damage to DNA, is implicated in mutagenesis

Liquid Agent Transport Around Solid Obstacles

May 1, 2002
Author(s)
Cary Presser, J F. Widmann, G Papadopoulos
The focus of this effort is to investigate the dispersal of liquid fire suppression agents around solid obstacles, and obtain a better understanding of the physical processes of droplet transport in cluttered spaces. An experimental investigation is

Biogenic Contributions to Atmospheric Volatile Organic Compounds in Azusa, California

April 1, 2002
Author(s)
George A. Klouda, C. W. Lewis, D C. Stiles, J L. Marolf, W D. Ellenson, W A. Lonneman
An objective of the 1997 Southern California Ozone Study (SCOS97) was to provide an up-to-date assessment of the importance of biogenic emissions for tropospheric ozone production in the South Coast Air Basin. To this end ambient air samples were collected

DNA Hydrogel Plugs Immobilized in Microfluidic Channels with Improved Stability

February 28, 2002
Author(s)
Rebecca A. Zangmeister, K G. Olsen, David J. Ross, Michael J. Tarlov
It has been previously demonstrated that DNA, modified on the 5' end with an acrylic acid group, can be incorporated into a polyacrylamide hydrogel matrix. These types of DNA containing gels have recently been immobilized in plastic microfluidic channels

Cell and DNA Standards for Medical Genetics Laboratories

February 1, 2002
Author(s)
Peter E. Barker
Standards have played a role in establishing human cytogenetic analysis as a clinical laboratory discipline from the beginning. Following implementation of basic cytogenetic techniques and discoveries of chromosomal disorders, scientific necessity inspired

Error Free Liquid Flow Diverters for Calibration Facilities (FEDSM2002-31085)

January 1, 2002
Author(s)
Tsyh Tyan Yeh, Aaron N. Johnson, Pedro I. Espina, N Yende
A design for diverter valves in gravimetric liquid flow calibration facilities is proposed. The concept makes use of repeated unidirectional motions of the diverter valve to reduce errors associated with asymmetry in the diverter valve motion and in the

Introduction To Serial Reviews On Oxidative DNA Damage And Repair

January 1, 2002
Author(s)
M. Dizdaroglu
Free radicals are produced in cells by cellular metabolism and by exogenous sources such as carcinogenic compounds, redox-cycling drugs and ionizing radiations. Reactive species cause damage to cells by reacting with molecules such as DNA, proteins and
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