Results 171 to 180 of about 1,251,014 (199)

Micro-PIXE in plant sciences: Present status and perspectives

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2002
Fundamental processes of plant physiology are affected or regulated by mineral nutrients. Hence understanding the mechanisms of nutrient uptake and their functions in plant metabolism is of fundamental importance in both basic and applied plant studies.
Jolanta Mesjasz-Przybyłowicz, Wojciech J. Przybyłowicz   +1 more
openaire   +1 more source

Micro-PIXE analysis of major elements in mineral specimens

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1993
Abstract Trace element analysis of mineral grains by micro-PIXE demands prior knowledge of major element concentrations from which the appropriate matrix corrections are derived. We describe the micro-PIXE determination of major elements using 750 keV protons.
J.L. Campbell, W.J. Teesdale
openaire   +1 more source

Macro- and micro-PIXE analyses of biological and medical samples

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1984
Abstract Since the development and optimalization of the PIXE technique, applications in biology and medicine have attracted many research workers. The reason for this can be found in the biomedical field and also in the analytical field. In biochemistry, the role of trace elements was underestimated previously but there is a growing awareness of the
R.D. Vis, C.C.A.H. Van der Stap, A.J.J. Bos   +2 more
openaire   +1 more source

3D-reconstruction of an object by means of a confocal micro-PIXE

J. Anal. At. Spectrom., 2010
We recorded a series of spectral maps of a hematite particle by combining a scanning proton microbeam excitation with detection of X-rays by a Si(Li) spectrometer equipped with polycapillary lens. The particle was driven through the sensitive microvolume to allow for a reconstruction of concentration in three dimensions.
Matjaž Žitnik, Nataša Grlj, Primož Vaupetič, Primož Pelicon, Klemen Bučar, Dimosthenis Sokaras, Andreas Germanos Karydas, Birgit Kanngießer   +7 more
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

Micro-PIXE Analysis of Ancient Roman Coins

2014
The presence of surface silver-enriched layer is quite common in objects made of a silver-copper alloy. In this work, some silver coins have been sectioned to study their microstructure and especially to assess the presence or absence of corrosion layers, enriched layers and non-homogeneities between surface and bulk.
CORSI, JACOPO, RE, ALESSANDRO, ANGELICI, Debora, LO GIUDICE, Alessandro, L. La Torre, V. Rigato   +5 more
openaire   +2 more sources

Analysis of geological samples by the micro-PIXE facility at KFUPM

Journal of Radioanalytical and Nuclear Chemistry, 2005
The scanning microprobe facility of the 3 MV Tandetron accelerator at King Fahd University of Petroleum and Minerals (KFUPM) has been applied extensively in various fields, including geology. This paper reviews a number of geological investigations carried out on samples of gold-bearing rocks, phosphorite ores and volcanic sediments.
openaire   +1 more source

Comparison of in-vacuum micro-PIXE and in-air micro-PIXE for unfixed plant sample

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Misako Miwa, Ayumi Nakatsuma, Shigeo Matsuyama, Sho Toyama, Takeshi Uchiyama, Yasuhiro Ishimaru, Nobuyuki Uozumi   +6 more
openaire   +1 more source

Applications of the remote operation of PIXE and Micro-PIXE measurements

2008
Fast internet connections that are available today worldwide are opening new possibilities in the research and education using accelerator based analytical techniques. Our newly developed accelerator computer control and recent improvements in sample positioning and data acquisition systems enabled a long distance access to experiments performed at ...
Bogdanović Radović, Ivančica, Fazinić, Stjepko, Bogovac, Mladen, Jakšić, Milko   +3 more
openaire  

Micro-PIXE study of Ag in digestive glands of a nano-Ag fed arthropod (, , Crustacea)

Nuclear Instruments & Methods in Physics Research B, 2011
Primož Vavpetič, Marjana Regvar, Damjana Drobne   +2 more
exaly