Abstract Light scattering spectroscopy is used as a non-invasive technique to characterize mineralization of silk films. Acquired scattering data is analyzed to provide information about the overall content as well as the organization of... more
Abstract Light scattering spectroscopy is used as a non-invasive technique to characterize mineralization of silk films. Acquired scattering data is analyzed to provide information about the overall content as well as the organization of mineral deposits.
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We discuss two phase-sensitive optical methods, light scattering spectroscopy (LSS) and quantitative phase imaging (QPI), which can reveal structure and dynamics of living cells at the nanometer scale. The LSS technique is shown to... more
We discuss two phase-sensitive optical methods, light scattering spectroscopy (LSS) and quantitative phase imaging (QPI), which can reveal structure and dynamics of living cells at the nanometer scale. The LSS technique is shown to characterize sub-micron cellular structures in pre-...
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Page 1. Atmospheric fate of several alkyl nitrates Part 1 Rate coefficients of the reactions of alkyl nitrates with isotopically labelled hydroxyl radicals Ranajit K. Talukdar, Scott C. Herndon,¤ James B. Burkholder, James M. Roberts ...
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... (1) Air Quality Criteria for Particulate Matter; United States Environmental Protection Agency, EPA/600/P-95/001, 1996. (2) Pandis, SN; Harley, RA; Cass, GR; Seinfeld, JH Atmos. ... Seinfeld, JH; Pandis, SN Atmospheric Chemistry and... more
... (1) Air Quality Criteria for Particulate Matter; United States Environmental Protection Agency, EPA/600/P-95/001, 1996. (2) Pandis, SN; Harley, RA; Cass, GR; Seinfeld, JH Atmos. ... Seinfeld, JH; Pandis, SN Atmospheric Chemistry and Physics; Wiley-Interscience: New York, 1998. ...
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We report the first successful study of the use of Raman spectroscopy for quantitative, noninvasive... more
We report the first successful study of the use of Raman spectroscopy for quantitative, noninvasive ("transcutaneous") measurement of blood analytes, using glucose as an example. As an initial evaluation of the ability of Raman spectroscopy to measure glucose transcutaneously, we studied 17 healthy human subjects whose blood glucose levels were elevated over a period of 2-3 h using a standard glucose tolerance test protocol. During the test, 461 Raman spectra were collected transcutaneously along with glucose reference values provided by standard capillary blood analysis. A partial least squares calibration was created from the data from each subject and validated using leave-one-out cross validation. The mean absolute errors for each subject were 7.8%+/-1.8% (mean+/-std) with R2 values of 0.83+/-0.10. We provide spectral evidence that the glucose spectrum is an important part of the calibrations by analysis of the calibration regression vectors.