Granulometric Parameters
Mostrando 1-12 de 20 artigos, teses e dissertações.
-
1. Recirculating system using biological aerated filters on tambaqui fingerling farming
Resumo: O objetivo deste trabalho foi avaliar um sistema de recirculação de água com uso de filtros biológicos aerados em tanques de criação de alevinos de tambaqui (Colossoma macropomum), com duas densidades de estocagem (1,4 e 2,5 kg m-3). Os biofiltros possuíam materiais semelhantes (meios) e os mesmos padrões granulométricos, mas com a ordem dos
Pesq. agropec. bras.. Publicado em: 18/07/2019
-
2. Least limiting water range, S-index and compressibility of a Udalf under different management systems
ABSTRACT: Agricultural areas in the region of Turuçu, on the Southeast Hillside in the state of Rio Grande do Sul (RS), Brazil present many examples of soil physical degradation. Accordingly, strategies aimed at evaluating and ameliorating the structural quality of soils should be developed to ensure the sustainable use of these areas. This study aimed to e
Sci. agric. (Piracicaba, Braz.). Publicado em: 01/07/2019
-
3. Microstructural, thermochemistry and mechanical evaluation of self-reducing pellets using electric arc furnace (EAF) dust containing zinc for Waelz process
ABSTRACT The increment of recycling of steel using electric arc furnace and the tendency to coat of steel products with zinc, in order to prevent corrosion, has increased the proportion of galvanized scrap used worldwide in the recent years. Approximately 10 to 20 Kg/t of cast steel is generated in casting arcs. These collected dusts electric arc furnace (EA
Matéria (Rio J.). Publicado em: 19/07/2018
-
4. Pharmacognostic evaluation, and development and validation of a HPLC-DAD technique for gallocatechin and epigallocatechin in rhizomes from Limonium brasiliense
ABSTRACT Limonium brasiliense (Boiss.) Kuntze, Plumbaginaceae, is a plant from the southern coast of Brazilian that is used for the treatment of premenstrual syndrome, menstrual disorders and genito-urinary infections. The aim of the present study was to determine the quality control parameters for rhizomes collected during different periods by pharmacopoeia
Rev. bras. farmacogn.. Publicado em: 2017-04
-
5. Biologia populacional do poliqueta exogone (exogone) breviantennata Hartmann-Schröder, 1959 (Syllidae: Exogoninae) / Population biology of the polychaete exogone (exogone) breviantennata Hartmann-Schröder, 1959 (Syllidae: Exogoninae)
The study of the syllid Exogone (Exogone) breviantennata was conducted in two soft bottom beds of the mytilid Mytella charruana at Camaroeiro and Cidade beaches, located on the northern coast of São Paulo. To characterize the study areas, samples were taken monthly between february 2006 and february 2007 at Camaroeiro, and between april 2006 and april 2007
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
-
6. Identificação de áreas de sedimentos compatíveis na Plataforma Continental interna para recuperação de praias entre as cidades de Niterói e Macaé¿ RJ
A faixa urbanizada da orla na costa sul ¿ oriental e leste do Estado do Rio de Janeiro sofre constantemente com a destruição de calçadões, ruas, muros e casas em eventos oceanográficos extremos. Essas construções, na maior parte dos casos estão localizadas muito próximas ao limite com a praia, dentro da faixa de não edificação prevista no Projet
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
7. Variabilidade morfodinâmica das praias oceânicas entre Imbé e Arroio do Sal, RS, Brasil
The morphodynamic variability of the oceanic beaches between Imbé and Arroio do Sal towns, Rio Grande do Sul State, Brazil, was investigated by means of periodic beach profiling combined with the interpretation of granulometric and hydrodynamic regime data. A seasonal trend in the hydrodynamic regime, in the distribution of the sediments and in the morphome
Publicado em: 2010
-
8. CARACTERIZAÇÃO TECNOLÓGICA DE UM SINTER FEED HEMATÍTICO CONTENDO DIFERENTES PROPORÇÕES E TIPOS DE SÍLICA NAS FRAÇÕES ADERENTES, INTERMEDIÁRIAS E NUCLEANTES
There are important Vale iron ore reserves located in the state of Minas Gerais. The hematite/itabirite relationship in the ROMs has been decreasing compared to the last decade. The beneficiation plants have been concentrating its efforts on reducing the silica content in the sinter feed in order to reach the quality levels demanded for the sintering process
Publicado em: 2010
-
9. Avaliação das condições química e física dos sedimentos do estuário Jundiaí-Potengi
The aim of this study was to quantify the presence of major and minor elements in the sediments of the Jundiaí-Potengi estuary, bordering the municipalities of Macaíba, Natal and São Gonçalo do Amarante in the state of Rio Grande do Norte, Brazil, considering the evidence of anthropic activity along this estuary, resulting in pollution by treated and unt
Publicado em: 2009
-
10. Comportamento de filtros rápidos de camada profunda no tratamento de águas de abastecimento mediante o emprego de polímeros como auxiliares de filtração. / Behavior of deep bed rapid filters treating public water supplies through the use of polymers as filter aids.
The project was to evaluate the use of anionic and cationic polymers of different molecular weights as filter aids to treat drinking water treatment of surface water sources with high degree of eutrophication, particularly with regard to particulate matter removal optimization and head loss rate minimization. The experimental apparatus was composed of four p
Publicado em: 2009
-
11. Caracterização hidrológica dos solos da bacia experimental do Ribeirão Concórdia, Lontras/SC
The knowledge of the physical and hydraulic soil properties is highly important to both use and appropriate management of the soil, as well as the understanding of the dynamic process of water and solutes movement. This work has the finality to generate knowledge about the hydrological characteristics of the soil of the experimental Basin of Ribeirão Concó
Publicado em: 2008
-
12. Mapeamento geomorfolÃgico e de processos erosivos da bacia hidrogrÃfica do rio Botafogo â PE utilizando tÃcnicas de geoprocessamento
This work presents the result of geomorphological and sedimentlogical studies and also erosion processes at the Botafogo Watershade, located 40 km north of Recife, Pernambuco State, Northeastern Brazil. In order to treat and analyse cartographic charts and remote sensing products , geoprocessing techniques were used. The data were validated and taken togethe
Publicado em: 2008