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Topic Area: Spectroscopy

Displaying records 1 to 10 of 116 records.
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1. Path degeneracy and EXAFS analysis of disordered materials
Topic: Spectroscopy
Published: 10/24/2014
Author: Bruce D Ravel
Abstract: The analysis of EXAFS data measured on a material with a disordered local configuration environment around the absorbing atom can be challenging due to the proliferation of photoelectron scattering paths that must be considered in the analysis. In th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915315

2. Bromination of marine particulate organic matter through oxidative mechanisms
Topic: Spectroscopy
Published: 9/14/2014
Authors: Bruce D Ravel, Alessandra C Leri, Kathleen Thornton, Lawrence M Mayer
Abstract: Although bromine is considered conservative in seawater, it exhibits a well established correlation with organic carbon in marine sediments. This carbon-bromine association was recently attributed to covalent bonding, with organobromine in sinking pa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915663

3. High-Speed Coherent Raman Fingerprint Imaging of Biological Tissues
Topic: Spectroscopy
Published: 7/20/2014
Authors: Charles H Camp, Young Jong Lee, John Heddleston, Christopher Michael Hartshorn, Angela R Hight Walker, Jeremy N. Rich, Justin D. Lathia, Marcus T Cicerone
Abstract: We have developed a coherent Raman imaging platform using broadband coherent anti-Stokes Raman scattering (BCARS) that provides an unprecedented combination of speed, sensitivity, and spectral breadth. The system utilizes a unique configuration of la ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914850

4. Plasmonic nanodome array fabricated on plastic as a dual-mode surface plasmon resonance and surface- enhanced Raman scattering sensor
Topic: Spectroscopy
Published: 5/12/2014
Authors: Charles J. Choi, Stephen Semancik
Abstract: Label-free optical sensors have recently emerged as a highly sensitive approach for detecting a broad range of chemical and biological analytes that include illicit drug compounds, explosives, proteins, viruses, and bacteria.To best meet such div ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916142

5. N-methylmesoporphyrin IX fluorescence as a reporter of strand orientation in guanine quadruplexes
Topic: Spectroscopy
Published: 4/1/2014
Authors: Navin C. Sabharwal, Victoria Savikhin, Joshua Turek-Herman, John M. Nicoludis, Veronika A Szalai, Liliya Yatsunyk
Abstract: Guanine quadruplexes (GQ) are four-stranded DNA structures formed by guanine-rich DNA sequences. Formation of GQs inhibits cancer cell survival, but detecting GQs in vivo has proved difficult, in part because of GQ structural diversity. Development ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914285

6. Improved Normalization of Systematic Biases Affecting Ion Current Measurements in Label-free Proteomics Data
Topic: Spectroscopy
Published: 2/21/2014
Authors: Paul A Rudnick, Xinjian Yan, Stephen E Stein, Xia Wang, Nell Sedransk
Abstract: Systematic biases, or batch effects, in ,high-throughput‰ biological datasets can be described as obscuring variabilities introduced during experimental design or analytical processing. These biases, if left unresolved, can lead to misinterpreta ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913822

7. Probing the intracellular glutathione redox potential using in-cell NMR spectroscopy
Topic: Spectroscopy
Published: 1/2/2014
Authors: Steve Y. Rhieu, Aaron A Urbas, Daniel W Bearden, John P Marino, Vytautas Reipa, Katrice A Lippa
Abstract: Non-invasive and real-time analysis of cellular redox processes has been greatly hampered by lack of suitable measurement techniques. Here we describe an in-cell nuclear magnetic resonance (NMR)-based method for measuring the intracellular glutathion ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914505

8. Time-Resolved Infrared Studies of a Trimethylphosphine Model Derivative of [FeFe]-Hydrogenase
Topic: Spectroscopy
Published: 10/1/2013
Authors: Edwin J Heilweil, Christopher Jon Stromberg, Melissa Johnson, James Thuman, Roger G. Letterman, Webster Edwin Charles
Abstract: Model compounds that structurally mimic the hydrogen-producing active site of [FeFe] hydrogenases have been explored. In order to explore potential ground-state electronic structure effects on reaction mechanisms compared to hexacarbonyl derivatives, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914239

9. Determination of Arsenic in Food and Dietary Supplement Standard Reference Materials by Neutron Activation Analysis
Topic: Spectroscopy
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910386

10. Frequency-agile, rapid scanning spectroscopy
Topic: Spectroscopy
Published: 4/28/2013
Authors: Gar-Wing Truong, Kevin O Douglass, Stephen E Maxwell, Roger D van Zee, David F Plusquellic, Joseph Terence Hodges, David A Long
Abstract: Challenging applications in trace gas analyses require high precision and acquisition rates.1-4 Many continuous-wave laser spectroscopy techniques exhibit significant sensitivity and potential;5 however, their scanning rates are slow because they rel ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912076



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