نتایج جستجو برای: orto stannate

تعداد نتایج: 330  

Journal: :Фундаментальные исследования (Fundamental research) 2018

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2016

Journal: :Zeitschrift für anorganische und allgemeine Chemie 2021

The reaction of TiCl3 ⋅ 3THF with perfluoropinacol (H2fpin), triethylamine and silver nitrite in acetonitrile yielded the formation first tris(perfluoropinacolato) complex a transition metal, (HNEt3)3[TiIV(fpin)3]NO2 (1). compound was fully characterized IR UV-vis spectroscopy as well elemental analysis single crystal X-ray diffraction. structure 1 is compared that known homoleptic titanium(IV)...

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :Comput. Sci. Inf. Syst. 2016
Aljaz Osojnik Pance Panov Saso Dzeroski

We address the task of modeling dynamical systems in discrete time using regression trees, model trees and option trees for on-line regression. Some challenges that modeling dynamical systems pose to data mining approaches are described: these motivate the use of methods for mining data streams. The algorithm FIMT-DD for mining data streams with regression or model trees is described, as well a...

2007
Maria José N. de Paiva Isarita Martins Maria Elisa P. B. de Siqueira

Neste trabalho foi desenvolvido um método usando a microextração em fase sólida (SPME) para análise cromatográfica em fase gasosa capilar com detector de ionização por chama (CG/ IC) de orto-cresol urinário, metabólito do tolueno. Após otimização das variáveis da SPME e da validação do método, foram analisadas amostras de urina de 27 trabalhadores expostos a solventes em oficinas de reparo auto...

2006
Isolda C. Mendes Juliana P. Moreira Nivaldo L. Speziali Antonio S. Mangrich Jacqueline A. Takahashi Heloisa Beraldo

Três complexos inéditos do tipo [Cu(HL)Cl 2 ] foram obtidos com N(4)-orto (H2Bz4oT, HL1), N(4)-meta (H2Bz4mT, HL2) e N(4)-para-toluil-2-benzoilpiridina tiossemicarbazona (H2Bz4pT, HL3), nos quais a tiossemicarbazona coordena-se ao metal por meio do sistema quelante N py N-S. H2Bz4pT (HL3) cristaliza-se no grupo espacial P1 – , a = 9,509(3) Å, b = 9,807(4) Å, c = 11,564(4) Å; α = 100,76(2)°, β =...

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