منابع مشابه
Electron Probe Microanalysis (EPMA)
An electron microprobe is an electron microscope designed for the non-destructive x-ray microanalysis and imaging of solid materials. It is essentially a hybrid instrument combining the capabilities of both the scanning electron microscope (SEM) and an x-ray fluorescence spectrometer (XRF), with the added features of fine-spot focusing (~ 1 micrometer), optical microscope imaging, and precision...
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Introduction: Recent work has shown that sub-micron car-bonaceous spheres (" nanoglobules ") constitute a microstructur-ally distinct, ubiquitous form of extraterrestrial organic carbon. Nanoglobules have been reported to occur in the insoluble organic matter (IOM) of carbonaceous chondrites, in the matrices of primitive chondrites, in interplanetary dust particles and in Wild-2 samples [1-4]. ...
متن کاملElectron Probe Microanalysis
The section on tranquilizers comprises three chapters: (1) Phenothiazine derivatives by P. B. Bradley, (2) Rauwolfia derivatives by J. J. Lewis and (3) Diphenylmethane derivatives by T. R. Sherrod. The first two are, quite justifiably, restricted to detailed accounts of the pharmacology of chlorpromazine and reserpine respectively, which are treated as model compounds representative of their ch...
متن کاملQuantitative Electron Probe Microanalysis
The recognition and understanding of the role of the microstructure in controlling the macroscopic behavior of a material has been a major theme of science and technology throughout the history of NBS/NIST. In materials science, the late 19th century saw the development of the sample preparation procedures we know today as “metallography” and “materialography,” and the emergence of optical micr...
متن کاملThe Golden Age of Microanalysis.
The history of electron probe analysis in the USA in its first two decades is reviewed, with reference to the personalities which were involved, the development of instrumentation and theory, and the technical problems and limitations of that era.
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 1983
ISSN: 0021-1575,1883-2954
DOI: 10.2355/tetsutohagane1955.69.3_357