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[en] The parameters of organic solar cells on the base of different organic semiconductors as poly epoxypropyl carbazole, copper phthalocyanine and bordeaux perylene are considered. Moreover the properties of solar cells on the base of n-GaAs and copper phthalocyanine heterostructure are described. The new technologies in the field of organic solar cells as bulk heterostructure solar cells are discussed. (author)
[en] Full text: One of the important processes in uranium technology is its concentration by "2"3"5U isotope, above the natural content in ores or present isotope extraction in its pure form, as far as just "2"3"5U - basic nuclear fuel; it is implemented by gas thermo-diffusion method, centrifugal and other methods based on mass difference "2"3"5U and "2"3"8U; in separation processes, uranium is used as evaporating hexafluoride UF_6. During uranium production of a high enrichment degree or isotopes their critical masses are taken into account; the most convenient method in this case - uranium oxides reduction by calcium; slag - Ca O which is formed as a result of this process and is easily separated from uranium by dissolution in acids. (author)
[en] Present article is devoted to uranium extraction from mine and technical waters by sorbent - apricot shell. It was found that apricot shells - the most accessible sorbent for uranium extraction from mine and technical waters due to the high price of sorbent A M (p). Uranium sorption was carried out similarly to the basic process flow of uranium extraction from mine waters with use of the anion exchanger sorbent A M (p). The schematic diagram of apparatus construction (sorption column) for uranium extraction by apricot shell was proposed.