Results 231 to 240 of about 38,586 (263)
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Biological tissues analysis by XRF microtomography
Applied Radiation and Isotopes, 2010The main of this work is to determine the elemental distribution in breast and prostate tissue samples in order to verify the concentration of some elements correlated with characteristics and pathology of each tissue observed by the X-ray transmission microtomography (microCT).
G R, Pereira +5 more
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Photoluminescence microtomography of diamond
Philosophical Magazine B, 1990Abstract The three-dimensional distribution of various types of point defects in diamond crystals has been investigated by means of new photoluminescence tomographic techniques. In relatively perfect natural yellow diamonds the zoned distribution of blue luminescent N3 and blue–green luminescent 463·0 nm centres was mapped.
W. J. P. Van Enckevort, E. P. Visser
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Direct Determination of Dissolution Rates at Crystal Surfaces Using 3D X-ray Microtomography
ACS Earth and Space Chemistry, 2018Investigations of mineral surface reactivity have recently challenged the classical approach of determining dissolution rates from mineral powders as crystals often exhibit heterogeneous and/or anisotropic reactivity.
C. Noiriel +3 more
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Biological Applications of Microtomography
1988X-ray microtomography can be used to obtain, non-destructively, 3-dimensional information about biological structures at a resolution of a few microns. The information may be purely morphological, but if accurately monochromatic X-radiation is used, the results are in the form of the 3-dimensional distribution of the linear absorption coefficient.
J. C. Elliott +3 more
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Transmission electron microtomography in soft materials
Microscopy, 2012This review summarizes the recent advances in three-dimensional (3D) imaging techniques and their application to polymer nanostructures, for example, microphase-separated structures of block copolymers. We place particular emphasis on the method of transmission electron microtomography (electron tomography for short; hereafter abbreviated as ET).
Hiroshi, Jinnai +5 more
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Ethanol bone evaluation using 3D microtomography
Micron, 2008The study of trabecular structures is important for understanding the mechanism of alcohol related to bone changes. Alcohol consumption can compromise the body mineral composition, affecting the bone metabolism and compromising the skeleton. The effects of the ethanol treatment on the internal microarchitecture of bone samples through 3D microcomputed ...
I, Lima, M S, Rocha, R T, Lopes
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Synchrotron X-Ray Microtomography
1988We present results obtained with a new form of 3-D microscopy. The technique is based on tomographic methods and we refer to it as 3-D Microtomography. When used with a tunable X-ray source, it is a powerful diagnostic and research tool for a wide variety of materials studies problems.
K. L. D’Amico +3 more
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EPR imaging in biological applications: Towards microtomography
Magnetic Resonance in Chemistry, 1995AbstractEPR imaging and microtomography promises to be a powerful tool for the EPR spectroscopist, but the expansion of this technique was hindered by the lack of commercial apparatus. A simple modification of an existing commercial system that can reach a resolution of the order of 75 μm with a gradient of 150 mT m−1 is described.
SOTGIU A. +4 more
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Microtomography with ionising radiations
Applied Radiation and Isotopes, 1995Abstract The physical requirements for tomographic imaging with x-ray photons and energetic ions beams are reviewed and some illustrative applications are briefly described. The number of x-ray photons needed to produce tomographic images of a given quality in terms of spatial and density resolution is shown to be independent of object size ...
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