Results 21 to 30 of about 88,933 (263)
Geotecnia, 2014 Na região norte de Natal, um terço do total das águas destinadas ao consumo humano é captado de poços tubulares. Entretanto, a expansão urbana sem infraestrutura sanitária tem produzido um aporte de nitrato, comprometendo sua qualidade.
Guttenberg Martins, Vera Castro
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A comparative study of optical properties and X-ray induced luminescence of octahedral molybdenum and tungsten cluster complexes [PDF]
, 2017 © 2017 The Royal Society of Chemistry. Octahedral metal cluster complexes have high potential for biomedical applications. In order to evaluate the benefits of these moieties for combined CT/X-ray luminescence computed tomography, this paper compares ...
Efremova, Olga A. +13 more
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Redetermination ofcatena-poly[[nitrato(1,10-phenanthroline)copper(II)]-μ-nitrato]
Acta Crystallographica Section E Structure Reports Online, 2007 The structure of the title copper coordination polymer, [Cu(NO3)3(C10H8N2)]n, previously reported by McFadden & McPhail [J. Chem. Soc. Dalton Trans. (1975), pp. 1993–1998], has been redetermined, leading to a more precise result. The crystal structure consists of a zigzag chain formed by the polymer [Cu(NO3)3(phen)]n (phen is 1,10-phenanthroline).
Yin-Qiu Liu, Xiao-Chun Zhou
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NITRATO ADDUCTS AND DERIVATIVES: SYNTHESIS AND INFRARED STUDY
Journal of Engineering Studies and Research, 2017 <p>Five new nitrato adducts and derivatives have been synthesized and studied by infrared spectroscopy. The suggested structures are discrete or of infinite chain type, the nitrate behaving as a bidentate or a monodentate ligand, the environment around the tin (IV) centres being octahedral or trigonal bipyramidal.
Libasse Diop, Mouhamadou Birame Diop
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Nitrate Upcycling Mediated by Organonickel Catalysis
Angewandte Chemie, Volume 136, Issue 39, September 23, 2024.A nickel‐catalyzed nitrate (NO3−) upcycling technology has been developed that uses a nickel pincer complex as a bifunctional catalyst to effect sequential deoxygenation followed by C−N coupling. This approach enables nitrate salts to be selectively transformed into various oximes (>20 substrates) with excellent conversion (>90 %).
Sudakar Padmanaban +5 more
wiley +2 more sources
Revista Brasileira de Ciência do Solo, 2009 O teor de N disponível em solos tratados com lodo de esgoto é um dos fatores restritivos à aplicação do resíduo em grandes volumes na agricultura, e deve ser utilizado nas normas que regulamentam seu uso agrícola com o fim de evitar a contaminação ...
Rita Carla Boeira +1 more
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The Ni-II, Hg-II and Cu-II complexes of 12-membered-ring mixed-donor macrocycles [PDF]
, 2000 The structures of diaqua(1,7-dioxa-4-thia-10-azacyclododecane)nickel dinitrate, [Ni(C8H17NO2S)(H2O)(2)](NO3)(2), (I), bis(nitrato-O,O')(1,4,7-trioxa-10-azacyclododecane)mercury, [Hg(NO3)(2)(C8H17NO3)], (II), and aqua(nitrato-O)(1-oxa-4,7,10 ...
Bernhardt, Paul V. +2 more
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Pesquisa Agropecuária Brasileira, 2007 O objetivo deste trabalho foi avaliar a taxa de nitrificação do N amoniacal dos dejetos líquidos de suínos, aplicados ao solo em sistema de plantio direto.
Celso Aita +2 more
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Atividade de microrganismos solubilizadores de fosfatos na presença de nitrogênio, ferro, cálcio e potássio [PDF]
Pesquisa Agropecuária Brasileira, 2001 A capacidade e o potencial de solubilização de 21 isolados de microrganismos solubilizadores de fosfatos (Bacillus, Pseudomonas, Enterobacteriaceae, Penicillium, Aspergillus e Paecilomyces) foram avaliados em cultivos em meio de cultura Glicose-Extrato ...
Germano Nunes Silva Filho, Caio Vidor
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Revista de Investigación Agraria y Ambiental, 2015 La zona de playa de Riohacha, La Guajira, Colombia, constituye un ecosistema muy rico, diverso y productivo, dotado de gran capacidad para proveer bienes y servicios que sostienen actividades como pesca, turismo y navegacion; sin embargo, experimenta ...
Carlos Doria Argumedo +1 more
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