Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Wallianos, A."'
Publikováno v:
The Canadian Mineralogist. 42:601-617
Euhedral macrocrystals of Pt–Fe alloy from the Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia, have a relatively constant composition of Pt2.4–2.6Fe, tin and antimony contents up to 0.3 wt.%, and an unusually low content of all PG
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9365d0875b030960faf2ee67d4658496
https://doi.org/10.2113/gscanmin.42.2.601
https://doi.org/10.2113/gscanmin.42.2.601
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
Publikováno v:
Economic Geology. 95:313-326
The Miocene tin porphyry systems of Llallagua, Chorolque, and Cerro Rico have a moderately fractionated rhyodacite to dacite bulk rock composition. Ta, Zr, and TiO2 concentrations are close to average upper crustal values. Hydrothermal overprint is r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d3977f73b794546c39f2f742dca7839
https://doi.org/10.2113/gsecongeo.95.2.313
https://doi.org/10.2113/gsecongeo.95.2.313
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. 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
Autor:
K.-U. Braun-Dullaeus, K. Traxel, Jörg Bohsung, A. Wallianos, D. Reimold, M. Maetz, H. Schiebler, Peter F. Arndt
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 104:19-25
The new proton microprobe is characterized by modular mounting resulting in easy maintenance, low cost personal computer (PC) system and several new features. The most important of these being the design of the lens, its location inside the vacuum, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de924b5cf64420d6eee03e4478196b75
https://doi.org/10.1016/0168-583x(95)00396-7
https://doi.org/10.1016/0168-583x(95)00396-7
Publikováno v:
Planetary and Space Science. 43:411-428
Besides meteorites and lunar material, interplanetary dust particles (IDPs) collected in the stratosphere represent another form of extraterrestrial matter available for studies in the laboratory. One major goal of IDP research activities is the sear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c511f9111479f0ee0da33115b7c74b6
https://doi.org/10.1016/0032-0633(94)00183-r
https://doi.org/10.1016/0032-0633(94)00183-r
Autor:
Alex Wallianos, Michael Wiedenbeck, A. Dietrich, Bernd Lehmann, Carlos Palacios, Jens Wittenbrink
Publikováno v:
Terra Nova
Quartz-hosted melt inclusions from latite dykes of the Eocene El Salvador copper porphyry system in northern Chile display wide ranges in both boron concentration (15–155 p.p.m. B) and isotope composition (δ11B −7 to +12‰; n = 10), likely refl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1b883375ed0cc52bcf6c7f68c74c695
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:240153
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:240153
