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Absorption Spectroscopy

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A. M. Liudchik – One of the best experts on this subject based on the ideXlab platform.

  • Further advancement of differential optical Absorption Spectroscopy: theory of orthogonal optical Absorption Spectroscopy.
    Applied optics, 2014
    Co-Authors: A. M. Liudchik
    Abstract:

    A modified version of the differential optical Absorption Spectroscopy (DOAS) method is presented. The technique is called orthogonal optical Absorption Spectroscopy (OOAS). A widespread variant of DOAS with smoothing of the registered spectrum and Absorption cross sections being made employing a polynomial regression is a particular case of OOAS. The concept of OOAS provides a variety of new possibilities for constructing computational schemes and analyzing the influence of different error sources on calculated concentrations.

  • Vector Interpretation of Orthogonal Optical Absorption Spectroscopy
    Journal of Applied Spectroscopy, 2014
    Co-Authors: A. M. Liudchik
    Abstract:

    The basic ideas of the technique of orthogonal optical Absorption Spectroscopy are illustrated with a simple example employing a vector representation of the functions of wavelength.

  • Theoretical basis of differential and orthogonal optical Absorption Spectroscopy of the atmosphere
    Journal of Applied Spectroscopy, 2013
    Co-Authors: A. M. Liudchik
    Abstract:

    The theoretical basis of differential optical Absorption Spectroscopy (DOAS) is examined and the conditions for applicability of the method are determined. Support is provided for the more general method of orthogonal optical Absorption Spectroscopy (OOAS), which can be used to interpret and estimate the effect of a number of previously unexplained sources of error inherent in DOAS.

Graham N George – One of the best experts on this subject based on the ideXlab platform.

  • CHAPTER 4:X-Ray Absorption Spectroscopy of Molybdenum and Tungsten Enzymes
    Molybdenum and Tungsten Enzymes, 2016
    Co-Authors: Graham N George
    Abstract:

    X-ray Absorption Spectroscopy has played vital roles in developing our understanding of the molybdenum and tungsten enzymes. This chapter discusses the technique of X-ray Absorption Spectroscopy, with an emphasis on experimental and data analysis techniques, and on strengths and weaknesses of the method. The role that X-ray Absorption Spectroscopy has played in the state of our knowledge of the molybdenum and tungsten enzymes will then be reviewed, with selected examples chosen to illustrate the strengths and weaknesses of the method.

  • X-ray Absorption Spectroscopy of light elements in biological systems
    Current Opinion in Structural Biology, 1993
    Co-Authors: Graham N George
    Abstract:

    Abstract Soft X-ray Absorption Spectroscopy of light elements has, until recently, fallen almost exclusively within the purview of materials science. Recent developments in techniques now allow access to this spectral range by biological scientists. This review discusses some of the recent work on X-ray Absorption Spectroscopy of light elements in biological systems and discusses some of the possibilities for future work.

R. J. Saykally – One of the best experts on this subject based on the ideXlab platform.

  • Peer Reviewed: Cavity Ringdown Laser Absorption Spectroscopy
    Analytical Chemistry, 1997
    Co-Authors: J. B. Paul, R. J. Saykally
    Abstract:

    Cavity ringdown laser Absorption Spectroscopy with simple commercial pulsed lasers and standard electronics can be used to obtain ultrasensitive direct Absorption measurements

Takahiro Kuga – One of the best experts on this subject based on the ideXlab platform.

  • Saturated Absorption Spectroscopy of acetylene molecules with an optical nanofiber
    Optics letters, 2011
    Co-Authors: Masato Takiguchi, Yutaka Yoshikawa, Takayuki Yamamoto, Kazuyuki Nakayama, Takahiro Kuga
    Abstract:

    We performed saturated Absorption Spectroscopy of acetylene (C2H2) ν1+ν3 band transitions with an optical nanofiber (ONF). Owing to high-intensity light around the ONF, we observed a Lamb dip at relatively low-power laser (∼10 mW) without a cavity. Our results showed that the simple ONF spectrometer is advantageous for performing saturation Absorption Spectroscopy and serves as a practical low-cost wavelength reference in the optical fiber communication band.

Isabella Ascone – One of the best experts on this subject based on the ideXlab platform.

  • Biological X-ray Absorption Spectroscopy and metalloproteomics.
    Journal of Synchrotron Radiation, 2009
    Co-Authors: Isabella Ascone, Richard W. Strange
    Abstract:

    : In the past seven years the size of the known protein sequence universe has been rapidly expanding. At present, more then five million entries are included in the UniProtKB/TrEMBL protein database. In this context, a retrospective evaluation of recent X-ray Absorption studies is undertaken to assess its potential role in metalloproteomics. Metalloproteomics is the structural and functional characterization of metal-binding proteins. This is a new area of active research which has particular relevance to biology and for which X-ray Absorption Spectroscopy is ideally suited. In the last three years, biological X-ray Absorption Spectroscopy (BioXAS) has been included among the techniques used in post-genomics initiatives for metalloprotein characterization. The emphasis of this review is on the progress in BioXAS that has emerged from recent meetings in 2007-2008. Developments required to enable BioXAS studies to better contribute to metalloproteomics throughput are also discussed. Overall, this paper suggests that X-ray Absorption Spectroscopy could have a higher impact on metalloproteomics, contributing significantly to the understanding of metal site structures and of reaction mechanisms for metalloproteins.

  • Metallogenomics and biological X-ray Absorption Spectroscopy
    Journal of Synchrotron Radiation, 2004
    Co-Authors: Isabella Ascone, Roger Fourme, S. Samar Hasnain, Keith O Hodgson
    Abstract:

    An overview of the second special issue of the journal on biological applications of X-ray Absorption Spectroscopy (BioXAS) is presented. The emphasis is on the study of metalloproteins in the context of structural genomics programmes (metallo­genomics).