Výsledky vyhledávání - "V. S. Parkhomenko"

Synthesis and Alkylation of Diethyl 6-Aryl-2-Oxo-1,2,3,6-Tetrahydropyrimidine-4,5-Dicarboxylates

Autor: Muataz J. K. Al-Ogaili, Valeriy D. Orlov, V. S. Parkhomenko, Maksim A. Kolosov

Publikováno v: Chemistry of Heterocyclic Compounds. 49:1484-1489

We have demonstrated the preparation of diethyl 6-aryl-2-oxo-1,2,3,6-tetrahydropyrimidine-4,5-dicarboxylates by reaction of urea, oxalacetic ester, and aromatic aldehydes with substituents of various electronic properties. Alkylation of the obtained

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::153c7e1312fc6a78e4eaad29f849277b
https://doi.org/10.1007/s10593-014-1399-1

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Role of the biogenic factor in platinum accumulation by oceanic ferromanganese nodules

Autor: Sergey Zhmodik, A. T. Titov, A. V. Tatarinov, A. G. Mironov, V. S. Parkhomenko, T. V. Teplyakova, Dmitriy Belyanin, V. G. Tsimbalist

Publikováno v: Doklady Earth Sciences. 427:777-782

A complex study of oceanic ferromanganese nodules (FMN) from the abyssal Clarion-Clipperton Fracture Zone and Lamont Guyot (Pacific Ocean) is performed. The concentrations of noble and trace elements are determined by AAS, INAA, and RFA-SR. Furthermo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::595ecbc656d0b68e72d8d1d91900ce77
https://doi.org/10.1134/s1028334x0905016x

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ChemInform Abstract: Synthesis and Alkylation of Diethyl 6-Aryl-2-oxo-1,2,3,6-tetrahydropyrimidine-4,5-dicarboxylates

Autor: Valeriy D. Orlov, Muataz J. K. Al-Ogaili, V. S. Parkhomenko, Maksim A. Kolosov

Publikováno v: ChemInform. 45

A variety of the title pyrimidinedicarboxylates (IV) are synthesized by a Biginelli-type three-component reaction and selectively transformed into corresponding 1,3-dialkylation products [cf.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa2814c737cd4ed69ec6e4668a76d0bc
https://doi.org/10.1002/chin.201421183

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Development of a complex of instrumental nuclear–physical methods to detect PGE, Re, Au, and Ag in hard-to-analyze rocks and complex ores

Autor: N.A. Mezentsev, K.V. Zolotarev, G.N. Anoshin, Yu.P. Kolmogorov, A. M. Spiridonov, T.S. Yusupov, A.D. Shaporenko, V. S. Parkhomenko, A.G. Mironov, Sergey Zhmodik

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 603:131-133

A system of methods to detect platinum group elements (PGE): Re, Au, and Ag in hard-to-analyze rocks and complex ores has been developed. It applies the SRXRF for Ru, Rh, Pd, and Ag and the INAA method for Os, Ir, Pt and Ag and implies mechanoactivat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79aac5e82040127df0d19564d4aa254e
https://doi.org/10.1016/j.nima.2008.12.117

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Geochemistry and age of ultrahigh pressure metamorphic rocks from the Kokchetav massif (Northern Kazakhstan)

Autor: Emil Jagoutz, O. A. Kozmenko, Nikolai V. Sobolev, M. Troesch, Vladislav S. Shatsky, V. S. Parkhomenko

Publikováno v: Contributions to Mineralogy and Petrology. 137:185-205

Isotopic and geochemical data of the Zerenda series metamorphic rocks from the Kokchetav massif are reported. Some of these rocks contain microdiamond inclusions in garnets and other indicators of ultrahigh pressure metamorphism (P > 40 kbar, T = 900

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::582aa20e36c72d8b35883f13bf674c9b
https://doi.org/10.1007/s004100050545

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