Search Results - (Author, Cooperation:M. Munidasa)

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  1. 1
    Staff View
    Publication Date:
    2012-02-10
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Alleles ; Animals ; Centromere/genetics ; Chromosomes, Insect/genetics ; Drosophila melanogaster/*genetics ; *Genome-Wide Association Study ; *Genomics ; Genotype ; Phenotype ; Polymorphism, Single Nucleotide/genetics ; Quantitative Trait Loci/*genetics ; Selection, Genetic/genetics ; Starvation/genetics ; Telomere/genetics ; X Chromosome/genetics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Seidel, U. ; Haupt, K. ; Walther, H. G. ; Burt, J. A. ; Munidasa, M.

    [S.l.] : American Institute of Physics (AIP)
    Published 1995
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Based on the description of photothermal image formation as a convolution between a defect distribution and the photothermal point spread function, a technique is presented by which subsurface thermal inhomogeneities can be quantitatively reconstructed from photothermal images. Numerical simulations demonstrate the performance and the limits of the suggested approach. Experimental results obtained from a low thermal contrast sample are presented and compared with the theory. © 1995 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.360182

    Articles: DFG German National Licenses
  3. 3
    Munidasa, M. ; Mandelis, A. ; Ferguson, C.
    Springer
    Published 1992
    Staff View
    ISSN:
    1432-0630
    Keywords:
    07.68 ; 81.70 ; 77.70
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Physics
    Notes:
    Abstract A capacitive photopyroelectric tomographic technique to obtain photothermal images of cross-sections with subsurface defects of opaque solid samples is reported. Unlike the two-dimensional “projection” images obtained by conventional photothermal detection methods, a tomographic scanning sequence has been used for cross-sectional imaging of subsurface features. Ray-like propagation of thermal waves is assumed in reconstructing the images. Resolution of these tomographic images with multiple features is investigated. Sensitivity of this reconstruction method to the size and shape of a single subsurface defect is also discussed.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00323844

    Articles: DFG German National Licenses
  4. 4
    Mandelis, A. ; Munidasa, M.
    Springer
    Published 1994
    Staff View
    ISSN:
    1572-9567
    Keywords:
    depth profiling ; laser processing ; liquid crystals ; nondestructive ; evaluation ; photothermal methods ; shot-peening ; thermal diffusivity
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract Several applications are presented of the Hamilton-Jacobi formulation of thermal-wave physics to the problem of laser photothermal depth profilometry of the thermophysical transport parameter (the thermal diffusivity) of inhomogeneous condensed phases (solids and liquids) with arbitrary, continuously varying thermal diffusivity profiles. A working general method for solving the inverse problem and obtaining arbitrary diffusivity depth profiles from the laser beam-intensity modulation frequency dependence of the photothermal signal (amplitude and phase) is described. Specific examples of profile reconstructions are presented, including magnetic field-induced thermophysical inhomogeneities in liquid crystals, laser processing inhomogeneities in steels and Zr-Nb alloys, and finally, evaluation of machining damage in metals. Whenever possible, profiles obtained photothermally are compared with those resulting from destructive methods, such as microhardness testing.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01458838

    Articles: DFG German National Licenses