Results 141 to 150 of about 996 (203)

On the characterization of the “Paris” meteorite using PIXE, RBS and micro-PIXE

open access: yesNuclear Instruments & Methods in Physics Research B, 2013
Abstract “Paris” meteorite is a CM type carbonaceous chondrite, a primitive meteorite whose parent body has been formed in the early stage of the solar system and that has experienced low alterations (thermal and aqueous) since its formation. Proton induced X-ray emission (PIXE), Rutherford backscattering spectroscopy (RBS) and micro-PIXE techniques ...
M Roumie, T Calligaro, B Nsouli
exaly   +5 more sources

A neural network approach for micro-PIXE data

open access: yesNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1999
The application of the artificial neural network for the processing of one-dimensional micro-PIXE data is described. The network architecture, selection of the transfer function as well as the training and verification operations are described in detail.
Rokita, E.   +4 more
openaire   +3 more sources

MICRO-PIXE FOR SINGLE CELL ANALYSIS

open access: yesInternational Journal of PIXE, 2012
The knowledge of the intracellular distribution of biological relevant metals is important to understand their mechanisms of action in cells, either for physiological, toxicological or pathological processes. However, the direct detection of trace metals in single cells is a challenging task that requires sophisticated analytical developments.
Ortega, R., ORTEGA, Richard
openaire   +3 more sources

Micro‐PIXE characterization of different skin models

open access: yesX-Ray Spectrometry, 2005
Abstract Because of the large natural inter‐individual variability and of some difficulties in obtaining material from surgery or from healthy volunteers, the use of human native skin in experimentation comes up against fierce competition from experimental models, such as reconstituted epidermis or human skin grafted in animals.
Gontier, E.   +13 more
openaire   +3 more sources

Micro-PIXE studies on gallium incorporation in mineralized tissue

open access: yesNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2001
The influence of gallium ions on the development of the mineralization process in a cell culture model was investigated. To determine the elemental composition the proton microprobe in combination with proton induced X-ray emission (micro-PIXE) and energy-dispersive X-ray fluorescence (XRF) were used.
Rokita, E.   +4 more
openaire   +2 more sources

Localization and quantification of Pb and nutrients in Typha latifolia by micro-PIXE

open access: yesMetallomics, 2012
Typha latifolia is a plant species widely used for phytoremediation. Accumulation, localization and distribution of Pb and mineral nutrients were investigated in roots, rhizomes and leaves of Typha latifolia grown at 0, 50, 100 and 250 μM Pb concentrations in a pot experiment under controlled conditions. Bulk elemental concentrations were determined by
Lyudmila, Lyubenova   +10 more
openaire   +3 more sources

Comparison between major and trace element concentrations in garnet performed by EPMA and micro-PIXE techniques

open access: yesSpectrochimica Acta, Part B: Atomic Spectroscopy, 2003
This paper deals with the application of the electron and proton microprobe (EPMA and micro-PIXE) in order to determine major and trace elements in metamorphic garnet samples.
Gloria Vaggelli   +2 more
exaly   +2 more sources

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