Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Arpad E. Torma"'
Autor:
Arpad E. Torma
Publikováno v:
Interdisciplinary Science Reviews. 17:366-370
The continuing depletion of high grade oxide gold deposits has created a need for new, economically viable and environmentally safe methods to treat refractory sulphidic ores. One of the alternativ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53b15b5746d740bcab57a21a1e9e3753
https://doi.org/10.1179/isr.1992.17.4.366
https://doi.org/10.1179/isr.1992.17.4.366
Autor:
Arpad E. Torma, Heli Jiang
Publikováno v:
Mineral Processing and Extractive Metallurgy Review. 7:235-258
The present article provides information on uses, mineral resources and production methods of gallium and germanium. Both of these metals are used in advanced technology. Gallium is mainly used in the production of high-speed computer chips (integrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d69c9d80cc5b5a1f5531726094562835
https://doi.org/10.1080/08827509108952673
https://doi.org/10.1080/08827509108952673
Publikováno v:
Journal American Society of Mining and Reclamation. 1991:141-150
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5f5ba48dab0d1ab58b065c341fac568
https://doi.org/10.21000/jasmr91010141
https://doi.org/10.21000/jasmr91010141
Autor:
Arpad E. Torma
Publikováno v:
Biotechnology Advances. 1:73-80
The present review describes the advances achieved during the last two years in the application of biotechnological principles in the extraction of metals from ores and minerals. Despite the fact that this branch of science is very young and many det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::864bbaf4bf0c6e5ee56aae0ba43a802b
https://doi.org/10.1016/0734-9750(83)90302-6
https://doi.org/10.1016/0734-9750(83)90302-6
Publikováno v:
European Journal of Applied Microbiology and Biotechnology. 7:85-90
The effect of hydrostatic pressure on the activity of Thiobacillus ferrooxidans grown on chalcopyrite concentrate has been investigated. It was found that bacterial activity, measured by conventional respirometry, was little affected by subjecting th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3e57a8e7f965c93be36a18f0dd99735
https://doi.org/10.1007/bf00522482
https://doi.org/10.1007/bf00522482
Publikováno v:
Biotechnology and Bioengineering. 19:727-740
The microbiological oxidation of ferrous iron in batch and continuous systems has been investigated in relation to uranium extraction from a low-grade ore by Thiobacillus ferrooxidans. The influence of the parameters, agitation, and aeration on oxyge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93ae972dcd31bd685cfc02178a678112
https://doi.org/10.1002/bit.260190509
https://doi.org/10.1002/bit.260190509
Autor:
Arpad E. Torma, Osman T. Inal
Publikováno v:
Journal of the Less Common Metals. 64:107-114
The reduction of stibnite by hydrogen in the absence and in the presence of sulfur acceptors has been investigated at atmospheric pressure and at temperatures of 200 – 600 °C. The activation energy of these processes has been found to be 17.4 kcal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7dc02eff5fb9551ba44cd426548ea80
https://doi.org/10.1016/0022-5088(79)90138-3
https://doi.org/10.1016/0022-5088(79)90138-3
Autor:
Arpad E. Torma
Publikováno v:
Canadian Journal of Microbiology. 24:888-891
The bacterial oxidation of a naturally occurring gallium-bearing chalcopyrite concentrate and a pure synthetic gallium (III) sulfide has been investigated at pH 1.8 and 35 °C, using an active culture of Thiobacillus ferrooxidans. This oxidation proc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3086b9cb6373106f48782cda066dbc1f
https://doi.org/10.1139/m78-148
https://doi.org/10.1139/m78-148
Autor:
O. T. Inal, Arpad E. Torma
Publikováno v:
JOM. 30:16-19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9a2d43e5f0d9825928a0abaafc1ba8a
https://doi.org/10.1007/bf03354392
https://doi.org/10.1007/bf03354392
Publikováno v:
Solar Energy Materials. 2:177-199
Concentrating solar collector assemblies of the substrate steel surface electroplated with a nickel coating followed by a thin black chrome solar absorber overlayer have been studied for the role and optimization of plating parameters such as; platin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1766eeb276c9b9de8ba4a0ed8fcd6bc
https://doi.org/10.1016/0165-1633(79)90017-0
https://doi.org/10.1016/0165-1633(79)90017-0