Surface Flow
Mostrando 13-24 de 1341 artigos, teses e dissertações.
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13. KINETIC MODELING AND EXPERIMENTAL VALIDATION OF A PHOTOCATALYTIC FLUIDIZED BED REACTOR FOR n-HEXANE DEGRADATION
Abstract This work presents a modeling procedure for a tall photocatalytic fluidized bed photoreactor used for the photocatalytic oxidation of n-hexane on the anatase TiO2 surface. The modeling strategy split the reactor into two parts: a lower dense phase, with high solids concentration behaving as a bubbling bed treated as a continuous stirred tank reactor
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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14. PREPARATION AND SIMULATION OF THE ON-LINE SiO2/S COATING FOR COKING INHIBITION IN THE INDUSTRIAL CRACKING FURNACE
Abstract Coke formation inside radiant coils is one of the main problems during thermal cracking of hydrocarbons. The on-line preparation of the coating for coking inhibition is a promising technology because it provides more flexibility to the operators on site. The SiO2/S coating was prepared on the inner surface of coils in an 8-year-served GK-VI industri
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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15. Effect of Scanning Speed on the Surface Roughness of Laser Metal Deposited Copper on Titanium Alloy
This paper reports on the effect of scanning speed on the laser deposited Cu on titanium alloy substrate. The experiments were conducted by varying the scanning speed from 0.3 m/min to 1.2 m/min while the laser power, the powder feed rate and the gas flow rate were kept constant. The laser deposited Cu were characterized through the evolving microstructure a
Mat. Res.. Publicado em: 20/12/2019
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16. Avaliação ecotoxicológica de efluentes tratados por alagados construídos
RESUMO O objetivo deste trabalho foi avaliar o desempenho de alagados construídos com fluxo subsuperficial horizontal cultivados com as macrófitas aquáticas Eleocharis sp. (junco) e Typha sp. (taboa) na redução da toxicidade de efluentes domésticos. Para isso, foram utilizados ensaios ecotoxicológicos com o microcrustáceo Daphnia similis, a dicotiled
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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17. Analysis of the long-term effects of groundwater extraction on the water balance in part of the Urucuia Aquifer System in Bahia - Brazil
Resumo Em regiões agrícolas onde há insuficiência de chuva para o cultivo, entender a dinâmica das águas, superficiais e subterrâneas, é fundamental para avaliar o impacto do crescente bombeio de poços sobre o balanço hídrico. O Oeste do estado da Bahia-Brasil, maior área de agronegócio do estado, experimenta uma progressiva ocupação a partir
Rev. Ambient. Água. Publicado em: 28/11/2019
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18. EXTRACTION CAPACITY OF GRASSES GROWN IN CONSTRUCTED WETLAND SYSTEMS USING DIFFERENT ARRANGEMENTS AND SUBSTRATES
ABSTRACT Constructed wetland systems have been used to treat different wastewater; among their essential components are the cultivated plant species and type of substrate used to fill them. The choice of plant species and type of substrate are important for the good system performance in wastewater treatment. This study aimed to evaluate the extraction capac
Eng. Agríc.. Publicado em: 04/11/2019
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19. How much do we know about the groundwater quality and its impact on Brazilian society today?
Resumo As águas subterrâneas são um recurso imprescindível para a sociedade e o meio ambiente no Brasil. Mais de 557 m3/s (17.5 km3/a) são extraídos através de 2.5 milhões de poços para atender a demanda nas cidades e no campo, gerando uma economia de R$ 56 bilhões ao ano (US$ 14 bilhões/ano). O aquífero tem função impar no ciclo hidrológico,
Acta Limnol. Bras.. Publicado em: 04/11/2019
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20. On-Flow Ligand Screening Assay Based on Immobilized Nucleoside Diphosphate Kinase B from Homo sapiens
We describe an on-flow zonal affinity-based chromatography assay to screen ligands for the nucleoside diphosphate kinase B enzyme (NME2) from Homo sapiens. For the first time, we have covalently immobilized NME2 on the surface of an open fused silica capillary reactor (NME2-ICER) and placed the reactor before the analytical column, which resulted in a two-di
J. Braz. Chem. Soc.. Publicado em: 24/10/2019
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21. Application of quality by design approach in RP-HPLC method development for simultaneous estimation of saxagliptin and dapagliflozin in tablet dosage form
A simple, sensitive, precise, accurate and robust high performance liquid chromatographic method has been developed for simultaneous estimation of saxagliptin (SAXA) and dapagliflozin (DAPA) in pharmaceutical formulation. Design of experiments (DoE) was applied for multivariate optimization of the experimental conditions of RP-HPLC method. Risk assessment wa
Braz. J. Pharm. Sci.. Publicado em: 24/10/2019
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22. A simple, ex vivo phagocytosis assay of Plasmodium vivax merozoites by flow cytometry
As phagocytosis is the first line of defense against malaria, we developed a phagocytosis assay with Plasmodium vivax (P. vivax) merozoites that can be applied to evaluate vaccine candidates. Briefly, after leukocyte removal with loosely packed cellulose powder in a syringe, P. vivax trophozoites matured to the merozoite-rich schizont stages in the presence
Mem. Inst. Oswaldo Cruz. Publicado em: 07/10/2019
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23. Coliform removal in a constructed wetland system used in post-swine effluent treatment
Resumo O objetivo deste estudo foi avaliar o desempenho de um sistema alagado construído (CWS) na remoção de coliformes totais (TC) e coliformes termotolerantes (ThC) de água residuária da suinocultura, como tratamento complementar a um sistema anaeróbio. Na etapa 1, o sistema experimental foi composto por um sistema alagado construído de escoamento v
Rev. Ambient. Água. Publicado em: 03/10/2019
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24. Processos hidrológicos em uma sub-bacia do Parque Estadual da Serra do Mar, núcleo Santa Virgínia
Resumo O presente estudo busca caracterizar o funcionamento hidrológico de uma sub-bacia com cobertura de Mata Atlântica, localizada no Parque Estadual da Serra do Mar, núcleo Santa Virgínia. Para isso, foram monitorados entre os anos de 2008 e 2009, alguns processos hidrológicos: escoamento superficial, umidade do solo (0,15, 0,30, 0,50 e 0,90 metros d
Ciênc. Florest.. Publicado em: 30/09/2019