Recirculation Rate
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. Poultry by-product meal as dietary protein source for dourado, Salminus brasiliensis: an economic appraisal
ABSTRACT: The dourado, Salminus brasiliensis, a large, carnivorous, Neotropical, Characin, is highly regarded for fish farming and sport fishing alike. However, studies on the farming and husbandry of dourado are still scarce. This study evaluated the performance of dourado fed diets formulated so as to contain increasing levels of poultry by-product meal as
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-05
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2. Growth, water consumption and basil production in the hydroponic system under salinity
ABSTRACT In irrigated crops, salinity is the main cause of the reduction of growth and productivity, with damage of the variability according to the sensitivity of the crop. The objective of this work was to evaluate the growth, water consumption and production of basil cv. Toscano Folha de Alface under saline stress, in different frequencies of recirculatio
Rev. Ceres. Publicado em: 2019-02
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3. Analysis of combustion efficiency in a pelletizing furnace
Abstract The objective of this research is to assess how much the improvement in the combustion reaction efficiency can reduce fuel consumption, maintaining the same thermal energy rate provided by the reaction in a pelletizing furnace. The furnace for pelletizing iron ore is a complex thermal machine, in terms of energy balance. It contains recirculation fa
REM, Int. Eng. J.. Publicado em: 2016-09
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4. Biomethane production from vinasse in upflow anaerobic sludge blanket reactors inoculated with granular sludge
ABSTRACT The main objective of this study was to evaluate the anaerobic conversion of vinasse into biomethane with gradual increase in organic loading rate (OLR) in two upflow anaerobic sludge blanket (UASB) reactors, R1 and R2, with volumes of 40.5 and 21.5 L in the mesophilic temperature range. The UASB reactors were operated for 230 days with a hydraulic
Braz. J. Microbiol.. Publicado em: 2016-09
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5. COMPARISON OF UASB AND FLUIDIZED-BED REACTORS FOR SULFATE REDUCTION
Abstract Reactor hydrodynamics is important for sulfidogenesis because sulfate reduction bacteria (SRB) do not granulate easily. In this work, the sulfate reduction performance of two continuous anaerobic bioreactors was investigated: (i) an upflow anaerobic sludge blanket (UASB) reactor and (ii) a fluidized bed reactor (FBR). Organic loading, sulfate reduct
Braz. J. Chem. Eng.. Publicado em: 2015-03
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6. Human papillomavirus infection among sexual partners attending a Sexually Transmitted Disease Clinic in Rio de Janeiro, Brazil
Cervical cancer is a major source of illness and death among women worldwide and genital infection with oncogenic human papillomavirus (HPV) its principal cause. There is evidence of the influence of the male factor in the development of cervical neoplasia. Nevertheless, the pathogenic processes of HPV in men are still poorly understood. It has been observed
Braz J Med Biol Res. Publicado em: 24/05/2013
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7. Cultivo integrado de juvenis de TilÃpia do Nilo (Oreochromis niloticus) com a microalga Spirulina platensis: uma alternativa para tratamento de efluente aquÃcola / Culture integrated youth of nile tilapia (Oreochromis niloticus) with microalgae Spirulina platensis: an alternative for treatment of aquaculture effluent
The environmental potential impacts from intensive aquaculture have increased public concern about the sustainability of the activity itself. The present work aimed to evaluate the zootÃcincos parameters of Nile tilapia , water quality, algal biomass production and rate of nitrogen removal compounds by Spirulina platensis realize an integrated cultivation o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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8. Desenvolvimento de um sistema de recirculação para estudos sobre digestibilidade em condições de alto desempenho para camarões marinhos: avaliação de ingredientes protéicos alternativos à farinha de peixe em diferentes níveis de inclus / Development of a recirculated system for digestibility studies in high performance conditions for marine shrimp: evaluation of alternative protein sources to fish meal in different dietary inclusion levels for Litopenaeus vannamei juveniles
This thesis focused on the validation of an aquaculture recirculation system (RAS) for shrimp digestibility studies and the determination of the digestibility coefficients of protein sources at different inclusion levels for shrimp feeds. The recirculation system for digestibility studies proved to be adequate for its purpose and shrimp growth rates was equa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/06/2011
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9. Influência da razão de recirculação na produção de hidrogênio em reator anaeróbio de leito fixo / Influence of recirculation rate in biohydrogen production in an anaerobic upflow fixed-bed reactor
A presente pesquisa avaliou diferentes razões de recirculação do meio líquido com a finalidade de identificar a melhor condição de mistura para uma produção elevada e contínua de hidrogênio em um reator anaeróbio de leito fixo com fluxo ascendente alimentado com um meio contendo sacarose como fonte de carbono e uréia como fonte de nitrogênio. Fo
Publicado em: 2011
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10. Degradação de 2,4-diclorofenol em solução aquosa por meio de processo fotoquímico solar. / Degradation of 2,4-dichlorophenol in aqueous solution by means of solar photochemical process.
2,4-dichlorophenol (2,4-DCF), the model pollutant selected in this work, is a compound used in the production of pesticides, herbicides, antiseptics, and commonly found in industrial wastewaters. It is considered a priority pollutant due to its high toxicity and high persistence in the environment. This study investigated the degradation of 2,4-DCF in a tubu
Publicado em: 2011
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11. Desidratação parcial de tomate cereja em secador de bandejas vibradas com reciclo
In this essay, it has been analyzed the partial dehydration of oval cherry tomato Lycopersicum sp. Mill, by using a vibrated tray dryer with recycle until the tomatoes reached 15% of its initial water content what represents 70,19% of humidity in wet basis or 2,35 kg of water/kg of dry mass in dry basis. The dryer used consists basically of a vertical dryer
Publicado em: 2011
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12. Modelagem Matemática da produção e transporte de biogás em aterros sanitários / Mathematical modeling of production and transportation of biogas in landfills
The processes that occur within the landfill for the production of methane are the methane generation through biodegradation, transport of methane through a porous medium and sorption of methane through reactions with other compounds present in the landfill, especially oxidation. This work aims to develop a computer model to estimate the biogas production ra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/03/2010