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Search Publications by: David L. Duewer (Fed)

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Displaying 126 - 150 of 168

CCQM –K40– DETERMINATION OF PCB CONGENERS IN SOLUTION: FINAL REPORT

October 5, 2005
Author(s)
David L. Duewer, Willie E. May, Reenie M. Parris, Michele M. Schantz, Stephen A. Wise
Abstract. Solutions of known mass fraction of organic analytes of interest are typically used to calibrate the measurement processes used in the determination of these analytes. Appropriate value assignments and uncertainty calculations for these

CCQM-K27-Subsequent: Key Comparison (subsequent) for the Determination of Ethanol in Aqueous Matrix

July 7, 2005
Author(s)
Michele M. Schantz, David L. Duewer, Reenie M. Parris, Willie E. May, M Archer, C Mussell, D Carter, L A. Konopelko, Y A. Kustikov, A I. Krylov, O V. Fatina
Ethanol is important both forensically ('drunk driving' or driving while under the influence, 'DWI', regulations) and commercially (alcoholic beverages). Blood- and breath-alcohol testing can be imposed on individuals operating private vehicles such as

Results From the NIST 2004 DNA Quantitation Study

May 1, 2005
Author(s)
Margaret C. Kline, David L. Duewer, Janette W. Redman, John M. Butler
For optimal DNA Short Tandem Repeat (STR) typing results, the DNA concentration ([DNA]) of the sample must be accurately determined prior to the polymerase chain reaction (PCR) amplification step in the typing process. In early 2004, the National Institute

Mitochondrial DNA Typing Screens With Control Region and Coding Region SNPs

March 1, 2005
Author(s)
Margaret C. Kline, Peter M. Vallone, Janette W. Redman, David L. Duewer, C D. Calloway, John M. Butler
Mitochondrial DNA (mtDNA) analysis has found an important niche in forensic DNA typing. It is used with highly degraded samples or low-copy number materials such as might be found from shed hair or bones exposed to severe environmental conditions. The

Intrinsic Standards for UV/Visible Spectrophotometry

April 1, 2004
Author(s)
John C. Travis, David L. Duewer, Marc L. Salit
The 21st century global marketplace and international performance standards provide a steady demand for fit-for-purpose reference materials. An efficient system for the delivery of reference materials to end-users begins with responsive and competitive

Polymerase Chain Reaction Amplification of DNA From Aged Blood Stains: Quantitative Evaluation of the Suitability for Purpose of Four Filter Papers as Archival Media

April 15, 2002
Author(s)
Margaret C. Kline, David L. Duewer, Janette W. Redman, John M. Butler, D A. Boyer
In collaboration with the Armed Forces Institute of Pathology's Department of Defense DNA Registry, the National Institute of Standards and Technology recently evaluated the performance of a short tandem repeat (STR) multiplex with dried whole blood stains