Direct Filtration
Mostrando 13-24 de 234 artigos, teses e dissertações.
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13. BTEX: DESENVOLVIMENTO DE BARRAS DE EXTRAÇÃO SORTIVA, DETERMINAÇÃO EM EFLUENTE HOSPITALAR E DEGRADAÇÃO POR MEIO DE FOTOCATÁLISE HETEROGÊNEA COM TiO2 SUPORTADO EM POLÍMEROS / BTEX: DEVELOPMENT OF BARS SORPTIVE EXTRACTION, DETERMINATION IN HOSPITAL EFFLUENT AND DEGRADATION BY HETEROGENEOUS PHOTOCATALYSIS WITH TIO2 SUPPORTED IN POLYMERS.
In this work were developed low cost bars of sorptive extraction, using commercial adhesive based on polydimethylsiloxane (PDMS) for the preconcentration and determination of benzene, toluene, ethylbenzene and xylene (BTEX) in effluent from the University Hospital of Santa Maria (HUSM). It was applied multivariate fractional factorial design (26-2) to invest
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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14. Nefropatia crônica por ciclosporina : papel do ácido úrico e do sistema renina angiotensina aldosterona como mediadores de disfunção endotelial, inflamação e vasculopatia / Cyclosporine nephropathy : effect of uric acid and the renin angiotensin aldosterone system as mediators of endothelial dysfunction, inflammation vasculopathy
Chronic allograft nephropathy is characterized by stripped tubular atrophy and interstitial fibrosis, in presence of arteriolar hyalinosis, resembling an ischemic pattern of chronic kidney disease. Chronic ischemia is associated with reduced glomerular filtration rate, and increase in serum uric acid levels. Cyclosporine per se also has a direct effect on tu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2011
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15. Tratamento de água para consumo humano de reservatório eutrofizado através de pré e interoxidação, adsorção em carvão ativado e dupla filtração / Drinking water treatment of eutrophic reservoir by pre and interoxidation, activated carbon adsorption and double filtration
Disordered basins occupation provoked acceleration of eutrophication, which besides purely aesthetic and landscaping problems, results in occurrence of high phytoplankton densities with potentially toxic cyanobacteria dominance. Alongside physical aging and consequent deterioration of installations, usual treatment technologies do not provide adequate condit
Publicado em: 2011
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16. Renal- and calcium-dependent vascular effects of Polybia paulista wasp venom
In the present study, the effects of Polybia paulista venom (PPV) on renal and vascular tissues were investigated. Isolated kidneys perfused with PPV (1 and 3 μg/mL) had increased perfusion pressure, renal vascular resistance, urinary flow, and glomerular filtration rate; and reduced sodium tubular transport. Histological evaluation demonstrated deposits of
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2011
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17. Glomerular filtration rate measured by 51Cr-EDTA clearance: evaluation of captopril-induced changes in hypertensive patients with and without renal artery stenosis
INTRODUCTION: Renal artery stenosis can lead to renovascular hypertension; however, the detection of stenosis alone does not guarantee the presence of renovascular hypertension. Renovascular hypertension depends on activation of the renin-angiotensin system, which can be detected by functional tests such as captopril renal scintigraphy. A method that allows
Clinics. Publicado em: 2010
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18. Remoção de oocistos de Cryptosporidium por meio da filtração direta ascendente em areia : avaliação em escala piloto / Cryptosporidium oocysts removal by up flow direct sand filtration : pilot scale assessment
Dentre as doenças de veiculação hídrica que vêm recebendo maior atenção nos últimos anos, destaca-se a Criptosporidiose que é causada pelo protozoário Cryptosporidium. Os oocistos de Cryptosporidium são resistentes ao estresse ambiental e à inativação por cloro e, devido ao seu tamanho, têm facilidade para passar através do processo de tratam
Publicado em: 2009
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19. Characterization, treatment and reuse of greywater and rainwater use in buildings. / Caracterização, tratamento e reúso de águas cinzas e aproveitamento de águas pluviais em edificações.
The reuse of greywater and the rainwater catchment for non potable uses meets the premises of sustainability and the concept of water conservation. Properly conceived greywater reuse systems and rainwater catchment systems should follow four basic criteria: hygienic reliability, aesthetics, environmental protection and technical/economic feasibility. The gre
Publicado em: 2009
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20. Remoção de oocistos de Cryptosporidium parvum E de indicadores no tratamento de água por ciclo completo, filtração direta descendente e dupla filtração, em escala piloto
Removal of oocysts in drinking water has on granular bed filtration, with previous coagulation and with or without sedimentation an efficient barrier for Cryptosporidium control. USA regulation for Cryptosporidium control in drinking water awards 3,0 log removal to conventional treatment and 2,5 log to direct filtration. In this pilot scale study, convention
Publicado em: 2008
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21. Avaliação da contaminação de ostras (Crassostrea rhizophorae) por especies de Cryptosporidium e Giardia em um ambiente de estuario do litoral de São Paulo / Evaluation of the contamination of oysters (Crassostrea rhizophorae) by species of Cryptosporidium and Giardia in a estuarine environment from São Paulo coast
Bivalve molluscs are great filter feeders that may accumulate and concentrate substances, particles and even pathogens in their tissues, if the places that they inhabit or are cultivated receive contaminated effluents dispose. These animals, which serve as biological indicators of faecal contamination, may transmit the protozoa accumulated in their tissues,
Publicado em: 2008
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22. Ocorrencia de Cryptosporidium spp. e Giardia spp. em hortaliças da região metropolitana de Campinas (SP) : sua relação com a comunidade de trabalhadores e com a area agricola / Occurence of Cryptpsporidium spp., Giardia spp. in vegetables of the metropolitan area of Campinas, SP : her relationship with the wokers community and and with the agricultural area
Cryptosporidium spp. and Gim-dia spp. are waterborne parasites that cause gastroenteritis. They are known for the high incidence of cases and the chemical resistance to treatments and capacity to stay intact for a prolonged time in environment. Today, the great influence of protozoa in several waterborne and foodborne outbreaks, becomes evident that vegetabl
Publicado em: 2008
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23. Dinâmica do uso dos recursos hídricos nas bacias do ribeirão Entre Ribeiros e do rio Preto, afluentes do rio Paracatu / Water resources use dynamics in watersheds of Ribeirão Entre Ribeiros and Rio Preto, tributaries of the Paracatu River
From times past, humanity confronts problems of environmental degradation. The environment, which always performed efficiently its function of filtration, today finds itself excessively overburdened by human activities: it suffers the risk of its resources exhausting, not being able in certain situations to recuperate itself and needing the help of man. Howe
Publicado em: 2008
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24. Mathematical modeling of the head loss and of the turbidity and particles removal in up flow direct filtration / Modelação matemática da perda de carga e da remoção de turbidez e de partículas na filtração direta ascendente
Este trabalho propõe a modelação matemática da perda de carga e da remoção de turbidez e de partículas na filtração direta ascendente baseada nos modelos que descrevem macroscopicamente o processo de filtração. Os modelos incluem o mecanismo de desprendimento de partículas do meio filtrante e a alteração da porosidade do material retido durante
Publicado em: 2007