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Displaying records 11 to 20 of 109 records.
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11. The ABCs of Using Standard Reference Materials in the Analysis of Foods and Dietary Supplements: A Practical Guide
Series: Special Publication (NIST SP)
Report Number: 260-181
Topic: Chemical Analysis
Published: 6/2/2014
Authors: Katherine E Sharpless, David Lee Duewer, Katrice A Lippa, Andrew L Rukhin
Abstract: Although ,nutraceuticals‰ and ,functional foods‰ seem to be ill-defined terms, both are often used to indicate a food that contains compounds providing benefits beyond basic nutrition, often with the expectation that these compounds are protectiv ...

12. Chemical Imaging of Artificial Fingerprints by Desorption Electro-Flow Focusing Ionization Mass Spectrometry
Topic: Chemical Analysis
Published: 5/19/2014
Authors: Thomas P Forbes, Edward Ryan Sisco
Abstract: Desorption electro-flow focusing ionization (DEFFI) mass spectrometry was used to image chemical distributions of endogenous, e.g., fatty acids, and trace exogenous compounds, e.g., explosives, narcotics and lotions, in deposited and lifted artificia ...

13. Estimation of the Limit of Detection Using Information Theory Measures
Topic: Chemical Analysis
Published: 1/31/2014
Authors: Alexander (Alexander) Vergara Tinoco, Fonollosa Jordi, Huerta Ramon, Santiago Marco
Abstract: Definitions of the Limit of Detection (LoD) based on the probability of false positive and/or false negative errors have been proposed over the past years. Although such definitions are straightforward and valid for any kind of analytical system, the ...

Topic: Chemical Analysis
Published: 12/8/2013
Authors: Myrna Simpson, Daniel W Bearden
Abstract: Environmental metabolomics is a rapidly growing area of research, and over the last decade the focus has been on organism responses to various types of environmental stressors (pollutants, nutritional shifts, and global climate change, for example) ...

15. Determination of Trace Sulfur in Biodiesel and Diesel Standard Reference Materials by Isotope Dilution Sector Field Inductively Coupled Plasma Mass Spectrometry
Topic: Chemical Analysis
Published: 11/14/2013
Authors: Steven J Christopher, Stephen E Long, Renata Amais, Joaquim N¿ga
Abstract: A method is described for quantification of sulfur at low concentrations on the order of 10 µg g-1 in biodiesel and diesel fuels using double isotope dilution and sector field inductively coupled plasma mass spectrometry (ID-SF-ICP-MS). Closed vessel ...

16. Connection between thermodynamics and dynamics of simple fluids in highly attractive pores
Topic: Chemical Analysis
Published: 10/25/2013
Authors: William P Krekelberg, Vincent K Shen, Daniel W Siderius, Thomas M. Truskett, Jeffrey R. Errington
Abstract: We investigate the structural and diffusive dynamics properties of a model fluid in highly-absorptive cylindrical pores. At subcritical temperatures, self diffusion displays three distinct regimes as a function of average pore density ρ: 1) a de ...

17. Determination of Arsenic in Food and Dietary Supplement Standard Reference Materials by Neutron Activation Analysis
Topic: Chemical Analysis
Published: 9/1/2013
Author: Rick L Paul
Abstract: Arsenic has been measured in food and food supplement Standard Reference Materials by neutron activation analysis for the purpose of value-assigning As mass fractions and assessing homogeneity. Instrumental neutron activation analysis (INAA) has been ...

18. Surface mediated assembly of small, metastable gold nanoclusters
Topic: Chemical Analysis
Published: 5/27/2013
Authors: John M Pettibone, William A Osborn, Konrad Rykaczewski, Albert A. Talin, John E Bonevich, Jeffrey W Hudgens
Abstract: The unique properties of metallic nanoclusters are attractive for numerous commercial and industrial applications but are generally less stable than nanocrystals. Thus, developing methodologies for stabilizing nanoclusters and retaining their enhance ...

19. The Development and Implementation of Quality Assurance Programs to Support Nutritional Measurements
Topic: Chemical Analysis
Published: 5/24/2013
Authors: Lane C Sander, Mary Bedner, David Lee Duewer, Katrice A Lippa, Melissa Meaney Phillips, Karen W Phinney, Catherine A Rimmer, Michele Miller Schantz, Katherine E Sharpless, Susan Shu Cheng Tai, Jeanice M Brown Thomas, Stephen A Wise, Laura J Wood, J. M. Betz, Paul M Coates
Abstract: The National Institute of Standards and Technology administers quality assurance programs devoted to improving measurements of nutrients and related metabolites in foods, dietary supplements, and serum and plasma samples. These programs have been de ...

20. DNA Purification From Crude Samples for Human Identification Using Gradient Elution Isotachophoresis
Topic: Chemical Analysis
Published: 5/23/2013
Authors: Elizabeth A Strychalski, Christopher Konek, Erica L Romsos, Peter M Vallone, Alyssa Henry, David J Ross

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  • SP 250-XX: Calibration Services
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  • SP 300-XX: Precision Measurement and Calibration
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