Zobrazeno 1 - 10
of 69
pro vyhledávání: '"J. Libra"'
Publikováno v:
Advances in Geosciences, Vol 32, Pp 9-13 (2012)
The decreasing availability of water caused by depletion and climate change combined with a growing world population requires the productive use of water now and in the future. The young researcher group "AgroHyd" at the Leibniz-Institute for Agricul
Externí odkaz:
https://doaj.org/article/8a04be0db4f742fd9a4d9cd8be22c043
Publikováno v:
Eiszeitalter und Gegenwart, Vol 61, Pp 103-132 (2012)
Die Kenntnis der regionalen Paläohydrologie ist eine wesentliche Grundlage für das Verständnis aktueller Umweltfragen, wie zum Beispiel nach den Gründen von hydrologischen Veränderungen, dem Einfluss von Landnutzungsstrategien und der Wirksamkei
Externí odkaz:
https://doaj.org/article/ebc03aeba4344128a41fcdb3f382e85e
Autor:
Tomáš Skála, J. Libra, M. Cabala, Vladimír Matolín, Igor Píš, Václav Nehasil, M. Škoda, František Šutara
Publikováno v:
Journal of Alloys and Compounds. 543:189-196
V–Rh(111) bimetallic systems were prepared by deposition of 0.4 and 2.5 ML of vanadium on Rh(111) surface at 823 K and by annealing up to 1023 K. Subsurface alloys of similar composition and electronic structure were formed. On the latter one, (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57c5fc072cbfddf9237b4e6a60a72e7e
https://doi.org/10.1016/j.jallcom.2012.07.122
https://doi.org/10.1016/j.jallcom.2012.07.122
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 181:229-233
We have studied change of surface oxidation state of cerium oxide affected by Rh deposition, and interaction with gas molecules. Oriented films of CeO 2 (1 1 1)/Cu(1 1 1) were used as prepared (stoichiometric) as well as reduced by soft Ar + sputteri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8784340d35b1d70a07e245c75f728d44
https://doi.org/10.1016/j.elspec.2010.05.007
https://doi.org/10.1016/j.elspec.2010.05.007
Publikováno v:
Surface and Interface Analysis. 42:555-558
Platinum shows excellent catalytic activity in electrochemical oxidation of methanol. It is widely used in direct methanol fuel cells, but it is readily poisoned by CO-like intermediates generated in methanol activation process. To increase Pt CO tol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32f566a42a43c5d0713fcc2d0c6e2ddb
https://doi.org/10.1002/sia.3492
https://doi.org/10.1002/sia.3492
Publikováno v:
Surface and Interface Analysis. 42:540-544
In this paper, we report investigations of the structure and electronic properties of a well-defined Pt/tungsten oxide system prepared on W(110) single-crystal surface. The crystallographic structureand epitaxial orientation were determined by reflex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a450c0b8106a4fc7dbdfa54447ee3abd
https://doi.org/10.1002/sia.3362
https://doi.org/10.1002/sia.3362
Autor:
J. Libra, Vladimír Matolín, František Šutara, Weijie Song, Kevin C. Prince, Michiko Yoshitake, Karel Mašek
Publikováno v:
Applied Surface Science. 256:3051-3057
Both epitaxial and amorphous ultra-thin alumina films were grown on a Cu-9 at.%Al(1 1 1) substrate by selective oxidation of Al in the alloy in ultra high vacuum. The crystallinity of the alumina films was controlled by oxidation temperature. The pho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81b9beb54f42c22af918020ef9572acf
https://doi.org/10.1016/j.apsusc.2009.11.072
https://doi.org/10.1016/j.apsusc.2009.11.072
Publikováno v:
Surface Science. 603:1087-1092
Adsorption and desorption of methanol on a CeO2(1 1 1)/Cu(1 1 1) thin film surface was investigated by XPS and soft X-ray synchrotron radiation PES. Resonance PES was used to determine the occupancy of the Ce 4f states with high sensitivity. Methanol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f8e54f9a05360ac09a32e08fc49dc38
https://doi.org/10.1016/j.susc.2009.02.010
https://doi.org/10.1016/j.susc.2009.02.010
Autor:
Vladimír Matolín, Slavomír Nemšák, D. Baca, Nataliya Tsud, Kevin C. Prince, Václav Nehasil, Tomáš Skála, J. Libra
Publikováno v:
Thin Solid Films. 517:773-778
We have investigated the Ga–Pd(110) system by means of soft X-ray photoelectron spectroscopy and low energy electron diffraction, and tested its chemical properties by co-adsorbing CO. On adsorption on Pd, the Ga 3d and 2p3/2 core levels showed sma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4d3605ae8bffc347ee195fbbc929004
https://doi.org/10.1016/j.tsf.2008.08.003
https://doi.org/10.1016/j.tsf.2008.08.003
Publikováno v:
Applied Surface Science. 254:4340-4345
An ultra-thin alumina layer grown on Cu–9at.%Al (1 1 1) surface was studied using synchrotron radiation photoelectron spectroscopy (SRPES), X-ray photoelectron spectroscopy (XPS) and low energy electron diffraction (LEED). By deconvolving SRPES spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d604d9d65b0b3a9a8fc3b409b72394ef
https://doi.org/10.1016/j.apsusc.2008.01.057
https://doi.org/10.1016/j.apsusc.2008.01.057