Filtration Coefficient
Mostrando 1-12 de 144 artigos, teses e dissertações.
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1. Stage effect of chronic kidney disease in erectile function
ABSTRACT Purpose The study aims to assess the influence of the stage of chronic kidney disease and glomerular filtration rate on prevalence and degree of erectile dysfunction. Materials and Methods This transversal study, conducted from May 2013 to December 2015, included patients with chronic kidney disease in conservative treatment, stages III/IV/V. Erec
Int. braz j urol.. Publicado em: 2018-02
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2. Monitoração de doses em radiologia: a calibração de medidores do produto kerma-área (PKA)
Objective The authors have sought to study the calibration of a clinical PKA meter (Diamentor E2) and a calibrator for clinical meters (PDC) in the Laboratory of Ionizing Radiation Metrology at Instituto de Energia e Ambiente - Universidade de São Paulo. Materials and Methods Different qualities of both incident and transmitted beams were utilized in condi
Radiol Bras. Publicado em: 2013-12
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3. Projeto e construção de bancada para ensaios de filtração de gases a alta pressão
With the industrial expansion and the increase of vehicles assembled daily, there was an increase in the use of natural gas as combustible. Beyond the cheaper the level of emission of pollutants by burning natural gas as fuel it is lower than all the fuels used until today. The increasing consumption of natural gas and the severity of the legislation in resp
Publicado em: 2009
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4. Avaliação da taxa de filtração glomerular com EDTA-51 Cr em pacientes com anemia falciforme / 51Cr-EDTA measurements of the glomerular filtration rate in patients with sickle cell anemia
Creatinine clearance has been reported to be inaccurate for the glomerular filtration rate (GFR) estimation in patients with sickle celI anemia (SCA). Inulin clearance, the reference method for GFR estimation, is impractical for routine use in these patients. 51Cr EDTA measurements of the GFR have been rarely reported in SCA. In order to obtain reference 51C
Publicado em: 2007
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5. Loading losses in net and disc filters used in dropping irrigation / Perda de carga em filtros de tela e de discos utilizados na irrigação localizada
Drip irrigation systems always require filtration systems for a basic water treatment. The filters are fundamental for the water quality used in irrigated farming, providing better performance of irrigation systems and their components. It was studied in this work the loading loss according to the flow in net and disc filters and it was determined the filter
Publicado em: 2006
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6. Tratamento de lixiviado através de filtro anaeróbio associado a membrana de microfiltração
Nowadays, the use of membrane bioreactors (MBRs) has been researched in many places of the world to treat different kinds of wastewater. The use of MBRs has advantages over other processes when the main focus is on the reuse of wastewater, small areas for wastewater treatment plant or restricted laws conditions. Commonly, the MBRs have been designed with sus
Publicado em: 2006
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7. Microsprinklers performance distributing wastewaters from poultry and cattle / Desempenho de microaspersores operando com águas residuárias de avicultura e de bovinocultura
This work was performed to determine hydraulics characteristics of the Fixed microsprinkler of the mark Carborundum when in operation with clear water, poultry wastewater and cattle wastewater, moreover, the susceptibility to clogging up of the microsprinkler that distributes wastewater from poultry and cattle and determine the maxim concentration of total s
Publicado em: 2005
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8. Modelling and simulation of the biological and physical processes of slow sand filtration
Slow sand filtration (SSF) is the earliest form of engineered potable water treatment and remains one of the most efficient processes for improving the physical, biological and chemical quality of water. However, whilst widely used throughout the world, knowledge of the filtration mechanisms remains limited. This is important in understanding and managing th
Publicado em: 2002
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9. NUMERICAL STUDY OF LOSS OF INJECTIVITY IN ROCK / ESTUDO NUMÉRICO DE DECLÍNIO DE INJETIVIDADE EM ROCHA
Esta dissertação apresenta um estudo numérico, utilizando o método dos elementos finitos, para simular o entupimento de rochas provocado pela injeção de água contendo partículas sólidas. Dentre os diferentes parâmetros que afetam o declínio de injetividade, quatro foram analisados, considerando-se a situação de fluxo unidimensional: fator de dan
Publicado em: 2002
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10. VERIFICAÇÃO DE MODELOS ANALÍTICOS PARA A PERDA DE INJETIVIDADE DE ROCHAS / ANALYTICAL STUDY OF THE INJECTIVITY LOSS OF ROCKS
This work deals with the impairment of rocks subjected to the injection of water with solid particles in suspension. The effect of the permeability reduction and consequent loss in rock injectivity is analyzed by the interpretation of core flow tests, previously reported, and simulated by using a computational program developed for this research. The program
Publicado em: 2002
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11. Production of inulinase: recovery and scale-up / Obtenção de inulinase: recuperação e ampliação de escala
It has been observed that the production of extracellular inulinase by Candida kefyr DSM 70106 was markedly affected by the rate of oxygen transfer to the medium. The highest inulinase activity (37,5 U.Ml-1) was attained at a KLa value (volumetric coefficient of oxygen transfer) equal to 43 h-1. As such, KLa was chosen as a criterion for scaling-up the biore
Publicado em: 1995
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12. Disturbance of peripheral microvascular fluid permeability by the onset of atrioventricular asynchrony in patients with programmable pacemakers.
BACKGROUND: In vitro and in vivo evidence suggests that atrial natriuretic peptide can enhance fluid flux from intravascular to extravascular compartments. The relevance of this to human pathophysiology remains unclear. OBJECTIVES: To determine whether a central haemodynamic change associated with increased plasma concentrations of atrial natriuretic peptide