Element Fluxes
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. The Local Formulation for the Modified Green's Function Method
AbstractThe Modified Global Green's Function Method (MGGFM) is an integral technique that is characterized by good accuracy in the evaluation of boundary fluxes. This method uses only projections of the Green's Function for the solution of the discrete problem and this is the origin of the term 'Modified' of its name. In this paper the local strategy for cal
Lat. Am. j. solids struct.. Publicado em: 2015-05
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2. Nutrient fluxes on a riparian forest fragment in the Rondônia State, Brazil / Fluxo de nutrientes em um fragmento de mata ciliar no estado de Rondônia, Brasil
Para identificar a importância ecológica das matas ciliares é essencial conhecer a interação entre sua hidrologia e ciclagem de nutrientes. Isto se torna ainda mais crucial diante das crescentes transformações na paisagem causadas pelo homem, que têm promovido forte antropização destas formações florestais. O estudo foi conduzido em uma floresta
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/11/2011
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3. A finite element model for the ocean circulation driven by wind and atmospheric heat flux
A finite element model for solving ocean circulation forced by winds and atmospheric heat fluxes is presented. It is vertically integrated 1 1/2 layer model which solves the motion and continuity hydrodynamic equations coupled with the advection-diffusion transport equation for temperature. A space-time Petrov-Galerkin formulation is used to minimize the und
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
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4. Trilogia Qatsi : visões e movimentos de mundo / Qatsi trilogy : visions and movements of world
This work is a filmic analysis of the Qatsi trilogy (Koyaanisqatsi, Powaqqatsi, Naqoyqatsi), directed by Godfrey Reggio. Firstly, it is presented a bio-filmography of the director, indicating his trajectory and some comments on each of his films. Then, the analysis of the trilogy takes place, beginning with Koyaanisqatsi and focusing the acceleration movemen
Publicado em: 2009
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5. Estratégias para melhoria da completidade da sequência de funções de interpolação empregadas na formulação Quase-Dual do Método dos Elementos de Contorno
The Quase-Dual formulation is a new technique to allow the applications of Boundary Element approach to solve efficiently mathematical models associated to physical problems in wich it is difficult to obtains the inverse integral form. The advective-diffusive problems and non-homogeneous problems are some of the important problems in this last class. The cur
Publicado em: 2007
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6. WATER FLUX, CHEMICAL BALANCE AND SOIL CHANGES IN THE ATLANTIC FOREST REACHED BY AIR POLLUTION FROM CUBATÃO, SÃO PAULO, SP, BRAZIL / Fluxo de Água, Balanço Químico e Alterações no Solo da Floresta Atlântica Atingida pela Poluição Aérea de Cubatão, SP, Brasil.
Estudaram-se neste trabalho os efeitos da deposição atmosférica sobre o balanço de elementos químicos, analisando-se as entradas e saídas dos elementos através do ciclo hidrológico durante quatro anos (setembro de 1991 a agosto de 1995) na Floresta Atlântica, situada nas vizinhanças do pólo industrial de Cubatão, São Paulo. Por meio de amostrage
Publicado em: 2001
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7. Estrategias numericas para solução de modelos de não-equilibrio para absorção gasosa com reações quimicas complexas (regime estacionario e dinamico)
Gas absorption with chemical reactions is a very common industrial separation processo Until now the traditional equilibrium stage model have been the main tools to the design and unsteady state simulations of the gas-liquid contact equipment. The nonequilibrium model based on mass transfers fundamentais presents a more realistic description of the gas-liqui
Publicado em: 2000
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8. Calcium and growth factor pathways of c-fos transcriptional activation require distinct upstream regulatory sequences.
Transcription of the c-fos proto-oncogene is rapidly induced in the rat pheochromocytoma PC12 cell line by a wide variety of stimuli, including polypeptide growth factors, phorbol esters, and calcium ion fluxes. We have mapped the upstream sequence requirements for this activation in PC12 cells by analysis of promoter deletion mutants in a transient expressi
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9. Depolymerisation products of hyaluronic acid after exposure to oxygen-derived free radicals.
Preparative chromatographic fractions of human umbilical cord hyaluronic acid (HA) of a molecular weight of 10(6) were subjected to graded oxygen-derived free radical (oxy radical) fluxes produced by: (a) the autoxidation of ferrous ions; (b) the action of xanthine oxidase (XO) on hypoxanthine (HX); and (c) by peripheral blood polymorphonuclear leucocytes th
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10. The Paleoproterozoic snowball Earth: A climate disaster triggered by the evolution of oxygenic photosynthesis
Although biomarker, trace element, and isotopic evidence have been used to claim that oxygenic photosynthesis evolved by 2.8 giga-annum before present (Ga) and perhaps as early as 3.7 Ga, a skeptical examination raises considerable doubt about the presence of oxygen producers at these times. Geological features suggestive of oxygen, such as red beds, laterit
National Academy of Sciences.
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11. Effects of NaCl on Flows of N and Mineral Ions and on NO3- Reduction Rate within Whole Plants of Salt-Sensitive Bean and Salt-Tolerant Cotton.
The effects of NaCl on the transport rates of cations, NO3-, and reduced N compounds between roots and shoot and on NO3- assimilation rate were examined on plants of two species differing in their sensitivity to salinity, bean (Phaseolus vulgare L. cv Gabriella) and cotton (Gossypium hirsutum L. cv Akala). Biomass production after 20 d in response to 50 and