Nutrients Transport
Mostrando 13-24 de 115 artigos, teses e dissertações.
-
13. Variabilidade subinercial das correntes na plataforma continental ao largo de Cabo Frio (RJ): observações / Subtidal variability of the currents on the continental shelf off Cabo Frio (RJ): observations
This work was developed within the context of the continental shelf hydrodynamics, with the aim of studying the subtidal variability of the currents in the far north of the South Brazil Bight (SBB). The area of the study is located in the vicinity of Cabo Frio (RJ) and Arraial do Cabo (RJ) (approximately 23º S / 42º W). Despite being a well known and studi
Publicado em: 2010
-
14. Desempenho de plantas de cobertura no controle da erosão hídrica no Sul de Minas Gerais / Performance of cover crops to control erosion in the South of Minas Gerais
The erosion initiates with the impact of the raindrop on the soil surface, causing the transport of sediment, nutrients and organic matter. To reduce this erosion, the use of conservation practices, such as proper management and planting of cover crops that reduce these losses, is essential. The objective of this study was to evaluate the potential of plant
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/12/2009
-
15. MESOFAUNA EDÁFICA E A TAXA DE DECOMPOSIÇÃO DA RESTEVA DE TRÊS SUCESSÕES DE CULTURA EM SISTEMA PLANTIO DIRETO
The mesofauna soil is composed primarily of Mite and Collembola (75 to 97% of total arthropod fauna of the soil) is one of the few groups of human beings who show enormous diversity of forms, habitat and behavior, being found in almost all places accessible to wildlife because they live in regions epi, hemispheric and euedáficas. The components of mesofauna
Publicado em: 2008
-
16. Behavior of dissolved inorganic N in surface and sub-surface waters in a cultivated sugar cane area / Comportamento do N inorgânico dissolvido em águas superficiais e sub-superficiais em área com cultivo de cana-de-açúcar
The sugar cane is an important agricultural activity in Brazil and its productivity is related to several factors, such as the availability of suitable nutrients quantities, with emphasis on the nitrogen. However, the constant use of fertilizers increases the possibility of environmental contamination, mainly in water bodies. In this study were evaluated the
Publicado em: 2008
-
17. Environmental impacts and nutrient recycling on pastures grazed by cattle
Grasslands are being replaced by urbanization and more profitable agricultural activities around the world. Producers may be faced with land constraints and need to consider intensification of the remaining grasslands as a means of maintaining overall production on a decreasing land resource. However, intensification of the grazing system is usually associat
Revista Brasileira de Zootecnia. Publicado em: 2007-07
-
18. Aspects of the time-space variation of the phytoplankton biomass and production and related parameters in Santos Estuary and Bay / Aspectos da variação espacial e temporal da biomassa e produção fitoplanctônica e parâmetros correlatos no estuário e baía de Santos
The relationship between time-space variations of phytoplankton biomass and primary productivity and the variability in physical and chemical characteristics of the water column was investigated by monthly samplings of temperature, salinity, inorganic nutrients, seston and phytoplankton biomass in 4 oceanographic stations in Santos Bay and 3 stations in Sant
Publicado em: 2007
-
19. ABC transporters in Mycoplasma hyopneumoniae and Mycoplasma synoviae: insights into evolution and pathogenicity
ABC transporters represent one of the largest superfamilies of active membrane transport proteins (MTPs) with a highly conserved ATPase domain that binds and hydrolyzes ATP, supplying energy for the uptake of a variety of nutrients and for the extrusion of drugs and metabolic wastes. The complete genomes of a non-pathogenic (J) and pathogenic (7448) strain o
Genetics and Molecular Biology. Publicado em: 2007
-
20. Dinâmica do transporte de nutrientes no escoamento superficial em sistemas de manejo do solo / Dynamics of nutrients transport in runoff under soil management system
Em áreas agrícolas utilizadas de forma intensiva para descarte de resíduos urbanos e de dejetos de animais confinados geralmente ocorre acúmulo de nutrientes. Nestas áreas, a dinâmica do transporte de nutrientes no escoamento superficial pode ser alterada nos sistemas de manejo sem preparo do solo, devido ao acúmulo superficial de material orgânico e
Publicado em: 2007
-
21. Dinâmica biogeoquímica do estuário do Rio Itajaí-Açú, SC.
The Itajaí river estuary, SC, is located in the final portion of Itajaí river watershed, which has a total area of about 15,500 km2. The terminal region of this watershed is characterized by the presence of important cities such as Blumenau and Itajaí. Agriculture is also important, specially irrigated rice culture. The aim of this study was to evaluate t
Publicado em: 2006
-
22. Instantaneous transport of salt, nutrients, suspended matter and chlorophyll-a in the tropical estuarine system of Santos
A contribuição dos canais estuarinos de Santos e São Vicente para a eutrofização da baía de Santos foi avaliada quantificando-se o transporte instantâneo de sal, fosfato e nitrogênio inorgânico dissolvido (NID), material em suspensão orgânico (MSO) e inorgânico (MSI) e clorofila-a, durante a estação seca (inverno austral- Agosto/1999) e chuvosa
Brazilian Journal of Oceanography. Publicado em: 2005-12
-
23. Short-term variability and transport of nutrients and Chlorophyll-a in Bertioga Channel, São Paulo State, Brazil
Variações de curta escala das concentrações de nutrientes, clorofila-a (Cl-a) e séston foram acompanhadas em uma estação fixa no canal de Bertioga (CB), sudeste do Brasil, em dois ciclos completos de maré de quadratura e sizígia, no inverno de 1991. Dados simultâneos da estrutura hidrográfica, marés e correntes permitiram calcular o transporte re
Brazilian Journal of Oceanography. Publicado em: 2005-12
-
24. Effect of biomass-burning emitted aerosols on cloud droplets formation and rainwater chemistry in the Amazon Basin / "Os efeitos de aerossóis emitidos por queimadas na formação de gotas de nuvens e na composição da precipitação na Amazônia"
The main objective of this study was to investigate the relationship between anthropogenic emissions in the Amazon basin and the indirect aerosol effect on climate. A detailed study of physical and chemical properties of natural and biomass burning aerosols was conducted, in order to understand how these completely different aerosols behave as Cloud Condensa
Publicado em: 2005