Gamma Distribution Of Water
Mostrando 1-12 de 25 artigos, teses e dissertações.
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1. A Novel Synthesis Route of Mesoporous γ-Alumina from Polyoxohydroxide Aluminum
Mesoporous gamma-aluminas (γ-Al2O3) were synthesized starting from an unusual precursor of polyoxohydroxide aluminum (POHA). This precursor was obtained from aluminum oxidation in alkaline water-ethanol solvent in the presence of d-glucose that induces the formation of a gel, which leads to the POAH powder after ethanolic treatment. Precipitated POHAs were
Mat. Res.. Publicado em: 22/01/2018
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2. Aging simulation of the tailings from Stava fluorite extraction by exposure to gamma rays
Abstract Tailings storage facilities are disposal systems for storing the waste products of the mining industry consisting of a slurry mixture made of soil, rock and water that remain after the mineral values have been removed from the patent ore. Tailings dams are supposed to last forever, so after their deposition, tailings can experience aging processes w
REM, Int. Eng. J.. Publicado em: 2017-12
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3. Estimation of climatological water deficit in an experimental watershed in the brazilian cerrado
ABSTRACT This study aimed to estimate the probability of climatological water deficit in an experimental watershed in the Cerrado biome, located in the central plateau of Brazil. For that, it was used a time series of 31 years (1982–2012). The probable climatological water deficit was calculated by the difference between rainfall and probable reference eva
Eng. Agríc.. Publicado em: 2016-08
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4. Efeito indireto dos aerossóis: observações em nuvens amazônicas em atmosfera poluída e na transição para limpa segundo os dados dos programas LBA/SMOCC/ENFIM! E AERONET/NASA. / Indirect effect of aerosols: observations in the Amazon clouds in polluted air and clean transition to the second program data LBA / SMOCC / AT LAST! And AERONET / NASA.
In the Brazilian Amazon, fires occur seasonally. The pollution generated because changes in time weather and climate of the Amazon. Studies have shown that the emission of particulate matter alters the radiative balance via direct effect (Solar radiation scattering and reflection.) and indirect aerosol (Increased concentration droplet and the cloud content l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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5. Estudo do processo de esferolização de partículas vítreas visando a aplicação em radioterapia interna seletiva / Study of the spheroidization process of glass particles for selective internal radiotherapy
The selective internal radiotherapy is an alternative method to treat hepatocellular carcinoma. Glass microspheres containing radionuclides are introduced in the liver through the hepatic artery, and they are housed preferentially in the region where the cancer cells are located. The microspheres are trapped in the arterioles which feed the tumors, and the &
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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6. Regionalização de potencial hidrelétrico com escassez de dados : aplicação Moçambique
Hydroelectricity (hydropower) is one branch of water resources engineering, which uses water (river flows) producing electricity. A hydroelectric undertaking, besides providing electricity and its comfort, it also allows the establishment of other productive activities, which provides a good economic and social development of the population (social responsab
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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7. Modelo matemático para avaliação de desempenho de sistemas de irrigação.
The irrigation performance of any irrigation systems is highly facilitated when using a fitted model to represent the measured data. Several statistical distribution models, such as uniform, normal, lognormal, specialized power, beta, and gamma, have been used to fit applied water from irrigation, as na aid to evaluate the irrigation performance. However, th
Planaltina. Publicado em: 2011
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8. Variacao espaco-temporal da disponibilidade hidrica climatica no Estado de Goias.
Este estudo objetivou estimar e espacializar a disponibilidade hidrica climatica no Estado de Goias, a partir dos dados de precipitacao com 75% de probabilidade de ocorrencia, e de evapotranspiracao potencial. Usou-se o Sistema de Informacoes Geograficas, que alem de realizar as operacoes com dados georeferenciados de precipitacao e evapotranspiracao, permit
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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9. Temporal and spatial variability of rainfall and water balance in the state of Rondônia, Brazil: characterization tendency analysis / Variabilidade temporal e espacial das chuvas e do balanço hídrico no estado de Rondônia: caracterização e análise de tendência
Amazon deforestation rate has been significant, resulting in a great concern about the effect that the reduction of the forest can have on the climatic dynamics in this region, as well as in other brazilian locations. In such context, the present work aimed to verify if the current rate of deforestation in Rondônia, last 30 years has been contributed for ch
Publicado em: 2009
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10. Simulation of dense colloids
We present in this proceeding recent large scale simulations of dense colloids. On one hand we simulate model clay consisting of nanometric aluminum oxyde spheres in water using realistic effective electrostatic interactions and Van der Waals attractions, known as DLVO potentials and a combination of molecular dynamics (MD) and stochastic rotation dynamics (
Brazilian Journal of Physics. Publicado em: 2008-03
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11. Análise sub-ppm de flúor em água pela técnica PIGE / SUB-PPM analysis of fluorine in water by the Pige technique
This work presents a new method for the analysis of fluorine in water, at the tenth of ppm concentration level, based on the PIGE (Particle-Induced Gamma-ray Emission) technique. It is shown that determination of concentrations of this order of magnitude by PIGE requires the use of a preconcentration method. Some attempts of preconcentration of fluorine by a
Publicado em: 2008
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12. Ativo ambiental e preÃo de imÃvel na cidade do recife: um estudo exploratÃrio a partir da utilizaÃÃo do mÃtodo dos preÃos hedÃnicos
This work makes use of hedonic price valuation theory to estimate the individual marginal value attributed to the environmental assets in Recife, throughout the differences in house pricing, according to its proximity to the natural resources. Traditionally, itâs assumed the dependent variable be normally distributed, however, due to its endogenous variable
Publicado em: 2008