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Fast-forward/fast-backward substitutions on vector computers
(Institute of Electrical and Electronics Engineers (IEEE), 1999-11-01)
This paper deals with approaches for sparse matrix substitutions using vector processing. Many publications have used the W-matrix method to solve the forward/backward substitutions on vector computer. Recently a different ...
Adsorption of copper(II) and cobalt(II) complexes on a silica gel surface chemically modified with 3-amino-1,2,4-triazole
(Elsevier B.V., 1998-12-20)
The isotherms of adsorption of MX2 (M = Cu2+, Co2+; X = Cl-, Br-, ClO4) by silica gel chemically modified with 3-amino-1,2,4-triazole (SiATR) were studied in acetone and ethanol solutions, at 25 degrees C. The 3-amino-1, ...
Properties of DLC films deposited by an oxyacetylene flame
(Elsevier B.V., 1999-08-01)
Diamond-like carbon (DLC) films were obtained by spinning a tungsten carbide substrate at a high speed using an oxyacetylene flame. The films deposited at a typical experimental condition of substrate temperature of 810 ...
Polyaniline mixed LB films exposed to X-rays
(Elsevier B.V., 1999-05-01)
X-ray irradiation is shown to affect electronic properties of polyaniline (PANi) in composite Langmuir-Blodgett (LB) films of PANi and cadmium stearate, in a similar way to acid doping. The time it takes for the shift in ...
Componentes de produção e produtividade de grãos de arroz de sequeiro em função do espaçamento e da densidade de semeadura
(Escola Superior de Agricultura Luiz de Queiroz, 1999-01-01)
O presente trabalho teve por objetivo estudar três espaçamentos entre fileiras (30, 40 e 50 cm) e três densidades de semeadura (100, 150 e 200 sementes viáveis/m2) quanto a fenologia da planta, os componentes da produção ...
Viabilidade econômica da cultura do melão (Cucumis melo L.) na região de Ilha Solteira - SP
(Universidade de São Paulo (USP), Escola Superior de Agricultura Luiz de Queiroz (ESALQ), 1994-12-01)
Com o objetivo de se verificar a viabilidade econômica da cultura do melão, na região de Ilha Solteira, ano agrícola 1991/92, procedeu-se a uma análise econômica para estudar o comportamento de dois cultivares de melão ...
O processo de latenciação no planejamento de fármacos
(Sociedade Brasileira de Química, 1999-02-01)
Short review about the main aspects of prodrug design, as its objectives, applicability and importance, showing the new trends in the research for selective latent forms, namely targeted drugs.
Indicator-free electrochemical DNA hybridization biosensor
(Elsevier B.V., 1998-11-30)
A new electrochemical hybridization biosensor protocol without an external indicator is described. The biosensor format involves the immobilization of inosine-substituted (guanine-free) probe onto the carbon paste transducer, ...
Off line extraction of phenol from human urine sample with isoamyl alcohol and determination by HPLC
(Marcel Dekker Inc, 1998-01-01)
This method has been developed for extraction and determination of phenol in a urine sample by high performance liquid chromatography.After acid hydrolysis, the free phenol was extracted with isoamyl alcohol solvent, ...
A new algorithm for Reverse Monte Carlo simulations
(American Institute of Physics (AIP), 1998-08-15)
We present a new algorithm for Reverse Monte Carlo (RMC) simulations of liquids. During the simulations, we calculate energy, excess chemical potentials, bond-angle distributions and three-body correlations. This allows ...