Results 161 to 170 of about 2,001 (220)

Micro‐PIXE characterization of different skin models

X-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., Barberet, P., Barbotteau, Yves, Habchi, C., Incerti, S., Moretto, P., Pouthier, T., Ynsa, M.D., Mavon, A., Rosdy, M., Gaspar, K., Hunyadi, J., Kiss, B., Surleve-Bazeille, J.E.   +13 more
openaire   +2 more sources

The skin barrier function: a micro‐PIXE study

X-Ray Spectrometry, 2009
Abstract Human body is perpetually subjected to environmental exposures as sun, natural, urban or industrial pollutions and societal exposures. Skin is the main physiological barrier facing to these different stresses; however its response mechanisms are still not well understood. Skin models are thus necessary to
Simon, M., Seznec, H., Barberet, Ph., Bacqueville, D., Mavon, A., Moretto, Ph.   +5 more
openaire   +4 more sources

Development of a Micro-PIXE Camera

International Journal of PIXE, 1998
We developed a system of μ-PIXE analysis at the division of Takasaki ion accelerator for advanced radiation application (TIARA) in Japan Atomic Energy Research Institute (JAERI), which consists of a microbeam apparatus, a multi-parameter data acquisition system and a personal computer.
S. MATSUYAMA, K. ISHII, A. SUGIMOTO, T. SATOH, K. GOTOH, H. YAMAZAKI, S. IWASAKI, K. MUROZONO, J. INOUE, T. HAMANO, S. YOKOTA, T. SAKAI, T. KAMIYA, R. TANAKA   +13 more
openaire   +1 more source

Micro-PIXE quantification of histochemical reactions

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1990
Abstract The proton induced X-ray emission in combination with a proton microprobe (micro-PIXE) was used for the quantitative determination of a locally bound histochemical reaction end-product. The determination of proteoglycans (PG) content in the cartilage is described in detail. The cartilage from the femur and the skull of 17–19 days old embryos
E. Rokita, T. Cichocki, S. Divoux, B. Gonsior, M. Höfert, L. Jarczyk, A. Strzalkowski, M. Sych   +7 more
openaire   +1 more source

A neural network approach for micro-PIXE data

Nuclear 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., Mutsaers, P.H.A., Quaedackers, J.A., Tabor, Z., Voigt, de, M.J.A.   +4 more
openaire   +2 more sources

Quantitative micro-PIXE mapping of squid statoliths

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1997
Distribution of elements in statoliths of squid Loligo vulgaris reynaudii d'Orbigny, 1845 was studied, using the true elemental imaging system (Dynamic Analysis) of the NAC nuclear microprobe. The analysis revealed various patterns of Ca and Sr distributions.
Lipinski, M. R., Przybylowicz, W. J., Durholtz, M. D., Mesjasz-Przybylowicz, J.   +3 more
openaire   +2 more sources

Quantitative micro-PIXE analysis of Yanzhuang meteorite

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1995
Abstract Yanzhuang H6 chondrite is the most heavily shocked, severely reheated, partly melted and recrystallized meteorite formed in the environment of microgravity, high vacuum and ultralow temperature of the space. It is consequently the most valuable specimen for microgravity research on the mechanism of crystallization of FeNi alloy in space ...
Xiankang Wu, Jieqing Zhu, Zhaohui Li
openaire   +1 more source

Micro-PIXE study of gold archaeological objects

Journal of Radioanalytical and Nuclear Chemistry, 2003
Several fragments of ancient gold objects coming from an Eneolithic hoard and from Pietroasa ‘Closca cu Puii de Aur’ (‘The Golden Brood Hen with Its Chickens’) hoard, unearthed on Romanian territory, and two Romanian native gold nuggets samples were analyzed using micro-PIXE technique. The purpose of the study was to clarify the metal provenance. Trace
Bugoi, R., Cojocaru, V., Constantinescu, B., Constantin, D., Grambole, D., Herrmann, F.   +5 more
openaire   +2 more sources

Accuracy of thick-target micro-PIXE analysis

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1990
Abstract The accuracy attainable in micro-PIXE analysis is assessed in terms of the X-ray production model and its assumptions, physical realities of the specimen, the necessary data base, and techniques of standardization. NTIS reference materials are analyzed to provide the experimental tests of accuracy.
J.L. Campbell, W.J. Teesdale, J.-X. Wang
openaire   +1 more source

Two-pyroxene geothermometer by using micro-PIXE data

Journal of Radioanalytical and Nuclear Chemistry, 2006
Rock-forming pyroxene phenocrystals from two andesite localities regarded as remnants of ancient lava flows in the southeastern part of the Tokaj Mountains near Sarospatak town (NE Hungary) were analyzed by micro-PIXE technique. The major element composition data of coexisting clino-and orthopyroxene phenocrystal pairs make it possible to estimate the ...
Á. Csámer, Z. Elekes, P. Rózsa, I. Uzonyi   +3 more
openaire   +1 more source