Bio-PIXE Theory and Applications. Chapter 1 Epitome (2) History of Bio-PIXE
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چکیده
منابع مشابه
Micro-PIXE in Ecophysiology
Two selected examples of PIXE microanalysis in ecophysiology have been shown. Studies of heavy metal distribution in mycorrhizal and nonmycorrhizal roots of Plantago lanceolata showed different mechanisms in filtering of Zn/Pb and Fe/Mn, both enabling plants to cope with metals present in the environment. Studies of the mechanism used by the beetle Chrysolina pardalina to eliminate excessive am...
متن کاملPIXE and XRF analysis of honey samples
The systematic determination of trace-element concentrations in honey samples was done by the PIXE method using a 2 MeV proton beam and by the total reflection XRF method. The different kinds of honey samples were collected in the period of spring–summer in three places of Poland: in the centre of Warsaw (a highly polluted region) and about 100 km east of Warsaw and 70 km southwest of Warsaw (a...
متن کاملCation-ratio Dating of Petroglyphs Using Pixe
A central problem in archaeological research has been the chronometric dating of petroglyphs (rock engravings). Recent improvements in the understanding of the chemistry of rock varnish (or patina) that develops on rock surfaces in arid regions has resulted in the development of a calibrated dating technique, cation-ratio (CR) dating. This is based on calibrating chemical changes in minor and m...
متن کاملPIXE analysis of Florida alligator plasma
Over the past several years, there has been an alarming increase in the death rate of some Florida alligators and a large decrease in the hatch rate of eggs. Several studies have been conducted to try to find a cause. These studies have ruled out toxins in the environment and high levels of toxic metals (mercury, for example). A previous study using Particle Induced X-ray Emission (PIXE) analys...
متن کاملPIXE analysis of paralesional psoriatic skin
The elemental distributions over epidermal skin cross sections as revealed by proton probe analysis on cryosections from human skin provides new insight into the physiology of skin. The present investigation shows that in comparison with skin from non-afflicted individuals nonlesional skin from psoriatics reveals abnormality (higher than normal levels) in calcium (Ca), iron (Fe) and zinc (Zn). ...
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ژورنال
عنوان ژورنال: RADIOISOTOPES
سال: 2000
ISSN: 0033-8303,1884-4111
DOI: 10.3769/radioisotopes.49.411