Filtration Element
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Filtração de água com diferentes concentrações de argila e silte em filtros de discos para irrigação localizada / Filtration of water with different clay and silts concentrations in discs filters for trickle irrigation
O uso da irrigação localizada está em pleno crescimento no Brasil, em decorrência da escassez de recursos hídricos e a necessidade de poupar água na irrigação. Isto tem requerido aplicação de conhecimentos no desenvolvimento de materiais e equipamentos que tendem a otimizar os sistemas de irrigação localizada. Os sistemas de irrigação localizad
Publicado em: 2010
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2. Reuso de agua em industria de reciclagem de embalagens plasticas : aspectos economicos e ambientais em modelo de escala real / Water reuse on plastics recycling pack industry : economical and enviromental aspects in real scale model
The discussion about technical, economical and environmental feasibility of water reuse in industrial process has been a constant concern. This thesis purposes a simplified alternative for waste water treatment seeking reuse in a plastic recycle industry. The water, in this case, is a prime component because it is the main element for the debris and impuriti
Publicado em: 2007
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3. Large eddy simulation of three-dimensional turbulent flows by the finite element method
The main objectives of this work are the formulation, implementation and applications of a numerical algorithm to simulate turbulent, incompressible, isothermal flows. The transient three-dimensional flow is analyzed using an explicit Taylor-Galerkin scheme and the finite element method with hexahedrical eight-node element. Turbulence is simulated using Larg
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-06
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4. Tratamento das águas de chuva escoadas sobre telhado e avaliação do seu uso
This research, qualitative and quantitative, is resulted of experiments for the treatment and quality of rain waters, flowed off on roofs, for domestic and industrial use. The choice of the subject is justified by the fact of the exploitation of the rain water to be an auxiliary resolution to the water scarcity, mainly in places where the lack of this resour
Publicado em: 2004
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5. Renal disposition of moxalactam in experimental animals as revealed by stop-flow analysis.
The mechanisms of moxalactam excretion were studied by stop-flow analysis in dogs, monkeys, and rabbits. In dogs, the amount of moxalactam excreted in the urine was almost equal to that estimated by glomerular filtration. There was no specific moxalactam peak corresponding to the p-aminohippuric acid (PAH) peak in the stop-flow patterns of the dogs. The PAH
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6. Characterization of a nuclear protein that binds to three elements within the silencer region of a bean chalcone synthase gene promoter.
The chalcone synthase (EC 2.3.1.74) gene promoter from the bean Phaseolus vulgaris L. contains a silencer element between positions -140 and -326 fro the transcription start site that is functional in electroporated soybean protoplasts. This element contains three binding sites for a bean nuclear factor (SBF-1) with DNA sequence recognition properties that a
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7. Purification and characterization of recombinant Rev protein of human immunodeficiency virus type 1.
Recombinant Rev protein of human immunodeficiency virus type 1 has been expressed in Escherichia coli and purified by ion-exchange and gel-filtration chromatography. Specific binding of the purified protein to the Rev-responsive element of the viral RNA is demonstrated. Physical characterization of the purified protein by circular dichroism and intrinsic flu
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8. Identification of an essential proximal sequence element in the promoter of the telomerase RNA gene of Tetrahymena thermophila.
Telomerase is a ribonucleoprotein reverse transcriptase that synthesizes and maintains telomeric DNA. Studies of telomeres and telomerase are facilitated by the large number of linear DNA molecules found in ciliated protozoa, such as Tetrahymena thermophila. To examine the expression of telomerase, we investigated the transcription of the RNA polymerase III-
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9. Characterization of an RNP complex that assembles on the Rous sarcoma virus negative regulator of splicing element.
We have characterized an RNP complex that assembles in nuclear extracts on the negative regulator of splicing (NRS) element from Rous sarcoma virus. While no complex was detected by native gel electrophoresis under conditions that supported spliceosome assembly, gel filtration revealed a specific ATP-independent complex that rapidly assembled on NRS RNA. No
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10. Comparison of structure and function of human erythrocyte and human muscle actin.
Human erythrocyte actin and human skeletal muscle actin were purified by acetone powder extraction and gel filtration. Pure human erythrocyte actin resembles muscle actin in its polymerization and depolymerization by phalloidin, cytochalasin B, and DNase I, in its peptide mapping pattern, and in the amino acid composition of corresponding peptides. Isoelectr
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11. Characterization of the ECB Binding Complex Responsible for the M/G1-Specific Transcription of CLN3 and SWI4
The transcription factor Mcm1 is regulated by adjacent binding of a variety of different factors regulating the expression of cell-type-specific, cell cycle-specific, and metabolic genes. In this work, we investigate a new class of Mcm1-regulated promoters that are cell cycle regulated and peak in late M-early G1 phase of the cell cycle via a promoter elemen
American Society for Microbiology.
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12. Evidence for a cAMP-dependent nuclear factor capable of interacting with a specific region of a eukaryotic gene.
Nuclear extracts prepared from the livers of rats treated with or without 8-bromo-cAMP were tested for their ability to bind to various fragments from the flanking region of the gene encoding phosphoenolpyruvate carboxykinase (GTP) [GTP: oxaloacetate carboxy-lyase (transphosphorylating), EC 4.1.1.32] known to contain the element that confers transcriptional