Zobrazeno 1 - 10
of 106
pro vyhledávání: '"K. Traxel"'
Publikováno v:
International Journal of PIXE. 12:101-107
By building up a cryo-preparation laboratory a method was developed which allows us to prepare cryo sections of fully differentiated plant-root material, according to the requirements of the proton microprobe. Since cryo-preparation is the only possi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3db4d52fcb25cd4e1596f72bd46fad4c
https://doi.org/10.1142/s0129083502000196
https://doi.org/10.1142/s0129083502000196
Autor:
A. Wallianos, Elmar K. Jessberger, M. Maetz, K. Traxel, C. Wies, Detlef Rost, W. Klöck, Thomas Stephan
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 181:539-544
Sections of interplanetary dust particles (IDPs) have been analyzed with proton-induced X-ray emission (PIXE) and scanning transmission ion microscopy (STIM) in order to determine trace element contents and distributions on a micrometer scale as well
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d2b761f950771d95b085056ef6fe583
https://doi.org/10.1016/s0168-583x(01)00332-9
https://doi.org/10.1016/s0168-583x(01)00332-9
Autor:
A. Wallianos, K. Traxel, Stefan Scheloske, Thorsten Schneider, A. Núñez-Ruiz, M. Maetz, C. Wies
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:90-96
We developed a new technique to determine the impact position of single pencil beams in the image plane with an accuracy of 0.2 μm. This technique bases on the overlapping of secondary electron images from a 1000 mesh grid. The measurements themselv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02fc63d3cd4f517505bbc4b69f4c860d
https://doi.org/10.1016/s0168-583x(99)00332-8
https://doi.org/10.1016/s0168-583x(99)00332-8
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:621-627
Micron-sized melt inclusions (MI), trapped in host quartz crystals from rocks of magmatic systems, probe the evolution of ore deposits. PIXE in combination with NRA of light element concentrations provide a nearly complete database for geochemical ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::902c51cc5cbd9e2b549d5ac614cd8abc
https://doi.org/10.1016/s0168-583x(99)00380-8
https://doi.org/10.1016/s0168-583x(99)00380-8
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 158:292-298
Some aspects of quantitative analysis of biological samples – including a review of the relevant literature – are discussed. Special emphasis is put on the accuracy of trace elemental results despite severe sample damage which occurs during analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd2d3012c594e38010c68d511f8bcd5d
https://doi.org/10.1016/s0168-583x(99)00331-6
https://doi.org/10.1016/s0168-583x(99)00331-6
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 150:200-207
Geosiphon pyriforme is a unique endosymbiotic consortium consisting of a soil dwelling fungus and the cyanobacterium Nostoc punctiforme. At present this symbiosis becomes very interesting because of its phylogenetic relationship to the arbuscular myc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0815e9d9bebc7f9ff1ca12849565e204
https://doi.org/10.1016/s0168-583x(98)00929-x
https://doi.org/10.1016/s0168-583x(98)00929-x
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 130:144-148
PIXE investigations in Heidelberg utilize very different target types for which analogous standards are very rarely available. Standardless quantitative measurements are therefore the preferred method. This asks for precise beam monitoring and accura
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97a0ba5a9f09bff8833b456b25fd2de2
https://doi.org/10.1016/s0168-583x(97)00273-5
https://doi.org/10.1016/s0168-583x(97)00273-5
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :192-196
Mass losses caused by proton bombardment in the course of PIXE analyses have been frequently reported in the case of biological samples but only very little information on the damage of rock targets is available. With the Heidelberg Proton Microprobe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d49e8553914d8d4a3b8154f3e36ef7f4
https://doi.org/10.1016/0168-583x(95)00904-3
https://doi.org/10.1016/0168-583x(95)00904-3
Publikováno v:
Protoplasma, 190, 107-118
Protoplasma 190 (1996)
Protoplasma 190 (1996)
The distribution of free cytosolic Ca2+ was studied during somatic embryogenesis of carrot using confocal scanning laser microscopy with fluo-3 as a fluorescent Ca2+ indicator. Chlorotetracycline fluorescence, antimonate precipitation and proton indu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8e57e2a8daea75c5da4553824ea0cb5
https://doi.org/10.1007/bf01281199
https://doi.org/10.1007/bf01281199
Publikováno v:
International Journal of PIXE. :241-253
During PIXE analyses of biomedical samples often great damage of the sample occurs. This damage is always combined with mass loss and strong alterations of the initial structure. The loss of mass can be explained by the loss of volatile elements, mai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f382d79c3a0c4354b0d255bcdf6c57e
https://doi.org/10.1142/s0129083596000247
https://doi.org/10.1142/s0129083596000247