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[en] Neptunium dioxide with crystal size of about 10 μm is prepared by means of Npsup((4)) oxalate calcination at 600 deg C. Oxalate precipitation is realized from Npsup((4)) solutions up to 1 g/l, with nitric acid concentration 2.5 m, deposition duration 10 min, temperature approximately 20 deg C. The precipitate settling is not used. Neptunium dioxide with crystal size (0.3-2.5) μm is prepared by means of mechanical grinding of large-disperse neptunium dioxide in agate stamp under the layer of alcohol for 20-25 min. Neptunium dioxide with dispersity interval (0.3-2.5) μm can be used to conduct biological experiment on model study of an organism affection by the given radionuclide during its respiratory administration
Journal
Radiokhimiya; ISSN 0033-8311; 
; v. 26(3); p. 382-384
; v. 26(3); p. 382-384
No abstract available
Source
Rossijskaya Akademiya Nauk, Moscow (Russian Federation); Federal'noe Agentstvo po Atomnoj Ehnergii (Rosatom), Moscow (Russian Federation); Mezhvedomstvennyj Nauchnyj Sovet po Radiokhimii pri Prezidiume RAN i Rosatome, Moscow (Russian Federation); Ob''edinennyj Institut Yadernykh Issledovanij, Dubna (Joint Institute for Nuclear Research (JINR)); 354 p; ISBN 5-903159-07-9; ; 2006; p. 230; The Fifth Russian conference on radiochemistry. Radiochemistry-2006; Pyataya Rossijskaya konferentsiya po radiokhimii. Radiokhimiya-2006; Dubna (Russian Federation); 23-27 Oct 2006
; 2006; p. 230; The Fifth Russian conference on radiochemistry. Radiochemistry-2006; Pyataya Rossijskaya konferentsiya po radiokhimii. Radiokhimiya-2006; Dubna (Russian Federation); 23-27 Oct 2006
No abstract available
Source
Mezhvedomstvennyj Nauchnyj Sovet po Radiokhimii pri Prezidiume RAN i Rosatome, Moscow (Russian Federation); Federal'noe Gosudarstvennoe Unitarnoe Predpriyatie Proizvodstvennoe Ob''edinenie Mayak, Ozersk (Russian Federation); GOU VPO Moskovskij Inzhenerno-Fizicheskij Institut, Ozerskij Tekhnologicheskij Institut OTI MIFI, Ozersk (Russian Federation); 133 p; ISBN 5-903159-04-4; ; 2006; p. 77-79; 2. Russian school on radiochemistry and nuclear technologies; Vtoraya Rossijskaya shkola po radiokhimii i yadernym tekhnologiyam; Ozersk (Russian Federation); 4-8 Sep 2006
; 2006; p. 77-79; 2. Russian school on radiochemistry and nuclear technologies; Vtoraya Rossijskaya shkola po radiokhimii i yadernym tekhnologiyam; Ozersk (Russian Federation); 4-8 Sep 2006
[en] It is presented the results of hydrochemical regime dynamics influence on plankton biomass for the cooling reservoir at PA 'Mayak' (lake Kyzyl-Tash) during 1990-1998 after uranium - graphite reactor stopping and termination of acid infusion into cooling water. In paper it is defined the basic hydrochemical parameters influencing on phytoplankton reproduction with the greatest degree. It is stated that the sharp increase of reservoir bio-reproduction being observed in 1996, 1997 is the result of the cycle phenomena in such processes, being connected with coincidence of the long-lived-changes of temperature and chemical elements concentration defining the reservoir bio-reproduction. (author)
Journal
Vestnik Natsional'nogo Yadernogo Tsentra Respubliki Kazakhstan; ISSN 1729-7516; ; v. 3(4); p. 114-122
; v. 3(4); p. 114-122
No abstract available
Source
Rossijskaya Akademiya Nauk, Moscow (Russian Federation); Rossijskoe Khimicheskoe Obshchestvo im. D.I. Mendeleeva, Moscow (Russian Federation); Administratsiya Volgogradskoj Oblasti, Volgograd (Russian Federation); Ministerstvo Obrazovaniya i Nauki Rossijskoj Federatsii, Moscow (Russian Federation); Natsional'nyj Komitet Rossijskikh Khimikov, Moscow (Russian Federation); Rossijskij Soyuz Khimikov, Moscow (Russian Federation); 536 p; ISBN 978-5-9948-0782-8; ; ISBN 978-5-9948-0785-9 (VOLUME 3); ; 2011; p. 143; 19. Mendeleev Congress on general and applied chemistry; XIX Mendeleevskij s''ezd po obshchej i prikladnoj khimii; Volgograd (Russian Federation); 25-30 Sep 2011
; ISBN 978-5-9948-0785-9 (VOLUME 3); ; 2011; p. 143; 19. Mendeleev Congress on general and applied chemistry; XIX Mendeleevskij s''ezd po obshchej i prikladnoj khimii; Volgograd (Russian Federation); 25-30 Sep 2011
[en] Ultrasonic phosphating was studied using specimens of polished magnets characterized by R-Nd-Fe-B-M type chemical composition under the following mass proportions: R (heavy rare-earth metal) - 3-5%; Nd - 33%; M (Al, Ti) - 3-5%; the balance - Fe. Phosphating of polished magnets within ultrasonic high-frequency field is determined to ensure fast and qualitative formation of protective-adhesion zinc-phosphate sublayer to be painted and varnished
[ru]
Процесс ультразвукового фосфатирования исследовали на образцах шлифованных магнитов, имеющих химический состав типа (R-Nd-Fe-B-M при следующих массовых пропорциях: R (тяжелый редкоземельный металл) - 3-5%, Nd - 33%, М (Al, Ti) - 3-5%, остальное Fe. Установлено, что фосфатирование шлифованных магнитов в высокочастотном ультразвуковом поле обеспечивает быстрое и качественное образование защитно-адгезионного цинк-фосфатного подслоя под лакокрасочное покрытиеJournal
No abstract available
Source
Ministerstvo Obrazovaniya i Nauki Rossijskoj Federatsii, Moscow (Russian Federation); Ivanovskij Gosudarstvennyj Khimiko-Tekhnologicheskij Univ., Ivanovo (Russian Federation); Moskovskaya Akademiya Tonkoj Khimicheskoj Tekhnologii im. M.V. Lomonosova, Moscow (Russian Federation); Rossijskoe Khimicheskoe Obshchestvo im. D.I. Mendeleeva, Moscow (Russian Federation); Akademiya Inzhenernykh Nauk im. A.M. Prokhorova, Moscow (Russian Federation); 595 p; ISBN 978-5-9616-0261-6; ; 2010; p. 261; 8. international science and technology conference on high-tech chemical technologies 2010 with elements of Scientific school for young people innovation in chemistry: achievements and prospects; XIII Mezhdunarodnaya nauchno-tekhnicheskaya konferentsiya Naukoemkie khimicheskie tekhnologii-2010 s ehlementami Nauchnoj shkoly dlya molodezhi Innovatsii v khimii: dostizheniya i perspektivy; Ivanovo (Russian Federation); 29 Jun - 2 Jul 2010
; 2010; p. 261; 8. international science and technology conference on high-tech chemical technologies 2010 with elements of Scientific school for young people innovation in chemistry: achievements and prospects; XIII Mezhdunarodnaya nauchno-tekhnicheskaya konferentsiya Naukoemkie khimicheskie tekhnologii-2010 s ehlementami Nauchnoj shkoly dlya molodezhi Innovatsii v khimii: dostizheniya i perspektivy; Ivanovo (Russian Federation); 29 Jun - 2 Jul 2010
No abstract available
Source
Rossijskaya Akademiya Nauk, Moscow (Russian Federation); Rossijskoe Khimicheskoe Obshchestvo im. D.I. Mendeleeva, Moscow (Russian Federation); Natsional'nyj Komitet Rossijskikh Khimikov, Moscow (Russian Federation); Ministerstvo Promyshlennosti, Nauki i Tekhnologij Rossijskoj Federatsii, Moscow (Russian Federation); Ministerstvo Obrazovaniya Rossijskoj Federatsii, Moscow (Russian Federation); Kabinet Ministrov Respubliki Tatarstan, Kazan' (Russian Federation); Akademiya Nauk Respubliki Tatarstan, Kazan' (Russian Federation); 508 p; ISBN 5-94541-024-1; ; 2003; p. 133; 17. Mendeleev congress on general and applied chemistry. Plenary reports. Progress and prospects of chemical science; XVII Mendeleevskij s''ezd po obshchej i prikladnoj khimii. Plenarnye doklady. Dostizheniya i perspektivy khimicheskoj nauki; Kazan' (Russian Federation); 21-26 Sep 2003
; 2003; p. 133; 17. Mendeleev congress on general and applied chemistry. Plenary reports. Progress and prospects of chemical science; XVII Mendeleevskij s''ezd po obshchej i prikladnoj khimii. Plenarnye doklady. Dostizheniya i perspektivy khimicheskoj nauki; Kazan' (Russian Federation); 21-26 Sep 2003
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