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Displaying records 981 to 990 of 1000 records.
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981. Pulse Parameter Dependence on Transition Position and Epoch Duration
Topic: Chemistry
Published: 5/18/2004
Authors: Donald R Larson, Nicholas G Paulter Jr, David I Bergman
Abstract: The pulse parameters of amplitudes and transition duration (10% to 90%) are examined as a function of the epoch and position of the transition edge in the epoch. The primary explanations for the observed variations are the pulse aberrations and the f ...

982. Purity determination as needed for the realisation of primary standards for elemental determination - status of international comparability
Topic: Chemistry
Published: 7/9/2009
Authors: Gregory C Turk, Heinrich Kipphardt, Ralf Matschat, Jochen Vogl, Tamara Gusarova, Michael Czerwensky, Hans-Joachim Heinrich, Akiharu Hioki, Leonid A. Konopelko, Brad Methven, Tsutomu Miura, Ole Petersen, Gundel Riebe, Ralph Sturgeon, Lee Lijian Yu
Abstract: Within the National Metrology Institutes (NMIs) and designated laboratories, an interlaboratory comparison, CCQM-P107, was conducted to verify the degree of international comparability concerning the results of purity analysis. The mass fractions of ...

983. Quality Assurance of Contaminant Measurements in Marine Mammal Tissues
Topic: Chemistry
Published: 9/1/1993
Author: Stephen A Wise

984. Quality Control of PCR Primers Used in Multiplex STR Amplifcation Reactions
Topic: Chemistry
Published: 6/1/2001
Authors: John M Butler, J E Devaney, M A Marino, Peter M Vallone
Abstract: Reliable amplification of short tandem repeat (STR) DNA markers with the polymerase chain reaction (PCR) is dependent on high quality PCR primers. The particular primer combinations and concentrations are especially important with multiplex amplific ...

985. Quantifying Residual Stress Development and Reserve Strength in Restrained Internally Cured Concrete
Topic: Chemistry
Published: 1/1/2013
Authors: John Schlitter, Dale P Bentz, Jason Weiss
Abstract: Concrete can develop tensile stress when it is restrained from shrinking freely. Standard tests, like the restrained ring test (ASTM C1581-09) can be used to quantify how likely a mixture may be to crack under constant temperature conditions. The s ...

986. Quantifying Uncertainty in Nuclear Analytical Measurements
Topic: Chemistry
Published: 7/1/2004
Author: Lloyd A. Currie
Abstract: This document resulted from a request at an International Atomic Energy Agency Consultants' Meeting. Information is based on a document Foundationsand future of detection and quantification limits prepared for the 1996 Proceedings of the Joint St ...

987. Quantitative Absorption Measurements Using Cavity Ringdown Spectroscopy With Pulsed Lasers
Topic: Chemistry
Published: 4/1/1999
Authors: J P. Looney, Joseph Terence Hodges, Roger D van Zee
Abstract: The theory and implementation of quantitative gas phase absorption measurements based on cavity-ringdown spectroscopy with pulsed lasers is discussed. The response of ringdown cavities is modeled using an eigenmode description of the electromagnetic ...

988. Quantitative Analysis of Selected PCB Congeners in Marine Matrix Reference Materials
Topic: Chemistry
Published: 6/1/1994
Authors: B. R. Hillery, J. E. Girard, Michele M Schantz, Stephen A Wise

989. Quantitative Analysis of Selected PCB Congeners in Marine Matrix Reference Materials Using a Novel Cyanobiphenyl Stationary Phase
Topic: Chemistry
Published: 2/1/1995
Authors: B. R. Hillery, J. E. Girard, Michele M Schantz, Stephen A Wise

990. Quantitative Depth Profiling of an Alternating Pt/Co Multilayer and a Pt Co Alloy multilayer by SIMS using a Buckminsterfullerene (C60) Source
Topic: Chemistry
Published: 5/15/2007
Authors: Kyung Joong Kim, David S Simons, John G Gillen
Abstract: Buckmins erfullerene ion beam has been applied o he dep h profiling of an al erna ing pure P and pure Co mul ilayer. Quan i a ive dep h profiling was performed by secondary ion mass spec rome ry (SIMS) wi h C60 ions using P Co alloy films wi h di ...

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