Bed Load
Mostrando 13-24 de 57 artigos, teses e dissertações.
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13. Tratamento de esgoto sanitário pelo sistema zona de raízes utilizando plantas de bambu / Sewage treatment by root zone system using bamboo plants.
This study aimed to evaluate the efficiency of three species of bamboo (Guadua angustifolia, Phyllostachys aurea and Phyllostachys bambusoides) in the sanitary sewage treatment, with a vertically downward sub-surface flow root zone system, in Goiânia, GO, Brazil. Sewage from a university was applied to asbestos cement water tanks with 1,000 liters volume ca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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14. Nonlinear instabilities on a granular bed sheared by a turbulent liquid flow
The granular media is of great importance in our quotidian, and their transport by a fluid flow is frequently found in nature and in industry. When the shear stresses exerted by the fluid flow on a granular bed are bounded to some limits, a mobile granular layer known as bed-load takes place in which the grains stay in contact with the fixed part of the gran
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-09
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15. Initial instabilities of a granular bed sheared by a turbulent liquid flow: length-scale determination
The transport of granular matter by a fluid flow is frequently found in nature and in industry. When the shear stresses exerted by the fluid flow on a granular bed are bounded to some limits, a mobile granular layer known as bed-load takes place, in which the grainsstay in contact with the fixed part of the granular bed. Under these conditions, an initiallyf
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-12
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16. Análise geoquímica dos sedimentos de fundo do Arroio do Salso, Porto Alegre-RS-Brasil
This paper presents the results of a study performed on bedload samples from the Salso Creek in the Porto Alegre City (Rio Grande do Sul State) rural area where agricultural and pastoral activities are carried out within urban areas. Sediment sampling took place on the 16th September 2001 (winter) and 21th January 2002 (summer), at five sites along the Salso
Publicado em: 2010
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17. Tectônica e sedimentação na Bacia do Camaquã Central (RS): exemplos do Grupo Guaritas e do Grupo Santa Bárbara / Tectonics and sedimentation in Central Camaquã Basin: the Guaritas Group and the Santa Bárbara Group
The relationship between tectonics and sedimentation plays a primordial role in the understanding of sedimentary successions. On the other hand, the study of pre-Silurian fluvial deposits represents a challenge due to the lack of interaction between land plants and river systems which characterizes post-Silurian environments. The Camaquã Basin (Ediacaran to
Publicado em: 2010
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18. Aplicação de processo oxidativo avançado (POA) como pré-tratamento de efluente de laticínio para posterior tratamento biológico / Aplication of Advanced Oxidative Process (AOP) as pretreatment of dairy wastewater for subsequent biologic treatment
The aim of this work is at developing a hybrid system in order to treat dairy wastewater. The hybrid system was composed by two modules. The first one is based in advanced oxidative process (AOP) and the second in actived sludge system (SLA). Methodologies from Standard Methods were adaptded and validated (BOD, COD, Norganic, N - NH4 +, Ptotal, Fe2+, G&O, TS
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2009
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19. Eficiência de diferentes métodos de controle sobre oocistos de Eimeria acervulina na cama reutilizada de frangos de corte
The efficiency of different methods of control on oocysts of Eimeria acervulina in broilers was evaluated. Preventive methods in the reused bed had been tested as the fermentation and the disinfection for quaternary ammonia, beyond the anticoccidian treatment of the chickens of cut with Diclazuril. 300 broilers of the Cobb strain had been used equally distri
Publicado em: 2009
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20. Ergonomic evaluation of operations in poultry production systems / Avaliação ergonômica em operações do sistema produtivo de carne de frango
Based on the importance of poultry production for the Brazilian economy and based on current demands of domestic and foreign markets with respect to production and processing of chicken meat, several aspects should be improved in the production chain in order to provide increased product quality with particular attention to safe working conditions for employ
Publicado em: 2009
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21. Post-treatment of effluents from anaerobic reactor treating domestic sewage by flotation/filtration pilot system with cationic synthetic polymers / Emprego de polímeros em unidade piloto de floto-filtração como pós-tratamento de efluentes de reatores anaeróbios de leito expansível tratando esgoto sanitário
This work assessed the performance of domestic sewage treatment pilot unit consisting of anaerobic reactor followed dissolved-air flotation/filtration (DAFF). Associated ferric chloride was used polyelectrolytes. First, was tested in lab-scale dissolved-air flotation (LSDAF), low dosages of cationic synthetic polymer with high molecular weight as aiding of f
Publicado em: 2008
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22. Analise morfodinamica do Rio Mogi Guaçu / Morphodynamics analysis of the Mogi Guaçu River
This study shows that fluvial dynamics of the Mogi Guaçu River (NE State of São Paulo, SE Brazilian) is influenced by hydrographic basin geological structures and lithologies that sustain the river bed. These structures and lithologies affect the shape of the longitudinal profile, changing the relationships between the stream flow dynamics and sedimentary
Publicado em: 2008
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23. Influência da taxa de carregamento orgânico na degradação anaeróbia da vinhaça em reator de leito fluidizado
In this work, the mesophilic anaerobic degradation (35 C) of the sugar cane vinasse was studied in an anaerobic fluidized bed reactor (RALF) for 255 days. The reactor, built in acrylic and with a total volume of 4,192 cm3, was filled with polystyrene particles as a means support, occupying 70 % of the total volume, and operated with hydraulic retention time
Publicado em: 2008
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24. Domestic wastewater post-treatment using ornamental plants : Constructed-Wetlands with gravel and bamboo as substrate / Plantas ornamentais no pos-tratamento de efluentes sanitarios : wetlands-construidos utilizando brita e bambu como suporte
Anaerobic reactor s effluent post-treatment systems make possible the improvement of anaerobic-treated wastewater characteristics in diverse conditions in a simple way. This posttreatment design flexibility will be able to support small communities to have better environmental conditions even if they did not have a traditional wastewater plant previously. Th
Publicado em: 2008