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Tempo de hidrolise e concentracao de acido para fracionamento do nitrogenio organico do solo.
(Pesquisa Agropecuaria Brasileira, Brasilia, v.32, n.2, p.221-227, fev. 1997., 2011)
Mixed pseudohalide complexes of copper(II). Crystal and molecular structure of [Cu(N-3)(NCS)(tmen)](n) and of [Cu(N-3)(NCO)(tmen)]2 (tmen = N,N,N ',N '-tetramethylethylenediamine)
(Kluwer Academic Publ, 2004-11-01)
The compounds [Cu(N-3)(NSC)(tmen)](n) (1), [Cu(N-3)(NCO)(tmen)](n) (2) and [Cu(N-3)(NCO)(tmen)](2) (3) (tmen = N,N,N',N'-tetramethylethylenediamine) were synthesized and studied by i.r. spectroscopy. Single crystals of ...
DICHLORO-[N-(2PIRYDYLMETHYLIDENE)-2-THIENYLMEtHYLAMINE-N,N'] COPPER(II) AND DIBROMO-N-(2-PYRIDILMETHYLIDENE)-2-THIENYLMETHYL-AMINE-N,N]COPPER(II) COMPLEXES, [CUCL2(C11H10N2S)] AND [CLCUBR2(C2(C11H10N2S)]
(Munksgaard Int. Publ. Ttd., 1994-07-15)
The crystal structures of dichloro- (2) and dibromo[2-pyridilmethylidene)-2thienylmethylidene)-2-thienylmethylmethyamine-NN'] copper(II) (1) have been determined to investigate the coordination of die metal centre. In ...
EFFECT OF NITROGEN FERTILIZER AND MAIZE STRAW INCORPORATION ON NH4+15N AND N0(3) -15N ACCUMULATION IN BLACK SOIL OF NORTHEAST CHINA AMONG THREE CONSECUTIVE CROPPING CYCLES
(Chilean Society of Soil Science/Sociedad Chilena de la Ciencia del Suelo, 2010)
Optimization of N, N, N-trimethylchitosan synthesis by factorial design
(Wiley-blackwellMaldenEUA, 2011)
THE CATHODIC CLEAVAGE OF THE NITROBENZENESULFONYL GROUP FROM ALIPHATIC-AMINES IN N,N-DIMETHYLFORMAMIDE
(Elsevier B.V., 1991-08-26)
The reduction of benzenesulfonyl derivatives of n-butylamine and N,N-di-n-butylamine with nitro substituents at the 2, 3 and 4 positions of the phenyl ring in N,N-dimethylformamide is reported. The N,N-di-n-butyl-4- and ...
Phase separation and gap bowing in zinc-blende InGaN, InAlN, BGaN, and BAlN alloy layers
(Elsevier B.V., 2002-03-01)
We present first-principles calculations of the thermodynamic and electronic properties of the zinc-blende ternary InxGa1-xN. InxAl1-xN, BxGa1-xN, and BxAl1-xN alloys. They are based on a generalized quasi-chemical ...
Absorção foliar pelo capim-tanzânia da amônia volatilizada do 15N-ureia aplicado ao solo
(Sociedade Brasileira de Ciência do Solo, 2009)
Avaliou-se o efeito da dose de N-ureia (40, 80 e 120 kg ha-1 de N) e da distância (0, 27 e 35 cm) entre dreno (folhas) e fonte (ureia aplicada ao solo) sobre a absorção foliar de amônia por pastagem de Panicum maximum cv. ...