997 resultados para Comparação de soluções


Relevância:

20.00% 20.00%

Publicador:

Resumo:

No Brasil, a forma farmacêutica sólida mais empregada em preparações homeopáticas é a de glóbulos. Para a sua preparação são propostas diferentes técnicas, sendo que as farmácias de manipulação adotam a de sua preferência. A FARMACOPÉIA HOMEOPÁTICA BRASILEIRA 2. ed. (1997) propõe a técnica de tríplice impregnação à 10% (V/p) enquanto que o MANUAL DE NORMAS TÉCNICAS DA ABFH 3. ed. (2003) propõe a simples impregnação de 2 a 5% (V/p). A qualidade do medicamento homeopático dispensado em glóbulos depende da técnica de impregnação adotada. O presente trabalho propôs um estudo comparativo sobre a impregnação de glóbulos avaliando duas técnicas rotineiras impregnando-se corantes. Posteriormente, comparando-se com a ação já conhecida do ácido salicílico em estacas das espécies de hortelã Mentha spicata L. e Mentha villosa L. Foram utilizados os corantes Azul de Metileno, Safranina e Verde Iodo, todos na concentração de 0,5% (p/V). Diferenças visuais entre as técnicas de impregnação utilizadas foram observadas em todos os corantes e na análise da diferença de massa antes e após a impregnação, para safranina e verde iodo. As espécies de hortelã mostraram perfil de enraizamento semelhante, não havendo diferenças significativas para a técnica de impregnação utilizada. Diferenças entre os comprimentos das raízes adventícias foram observadas graficamente, na comparação dos tratamentos homeopáticos e não homeopáticos, mostrando a potencialidade da dinamização nos medicamentos. As soluções estoque de ácido salicílico, ou seja, aquelas que não sofreram dinamização, inibiram o enraizamento das estacas de Mentha spicata L. e Mentha villosa L. Um efeito... (Resumo completo, clicar acesso eletrônico abaixo)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Cassava wastewater, generated during cassava processing, is a highly polluting and toxic waste. This study aimed to assess the relationship of cassava treatment efficiency in two aerobic sequencing batch reactors, cylindrical plastics (31cm height x 9cm diameter), with 2.0 liters capacity and 1.5 liters of work volume, a ratio of diameter and height of the liquid 1:2.5, with a running time of 24 hours and stoppage aeration for 16 hours with average feed of 2,500 and 6,000 mg COD. L -1. COD, pH, SVI and F/M were analyzed. The results obtained in the two reactors showed an average reduction of 94.1% and 76.8% organic content, respectively; pH values showed a rising in the output pH values compared to entry ones; SVI values obtained: 54.1 mL/g, 99.3 mL/g, respectively in a F/M ratio values worked out of 0.4 d-1 and 1,1 d-1 , respectively. The results demonstrated that the process has generated considerable saving in energy consumption compared to traditional continuous systems, was efficient and did not affect the efficiency overly of the reactor.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In this paper we consider the problem of differential inclusion in time scales whose vector field is a multifunction, that is, a function that maps points to sets. It is provided conditions of existence without requiring compactness of the vector field; it is required that the vector field is closed, convex, and lower semicontinuous. In previous work in literature, it is required that the field is either scalar or compact, convex, and has closed graph.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Several alloys present the shape memory effect and among them, the equiatomic NiTi alloy, nitinol, is the most important one. It is usually used in several engineering applications and also in biomedical devices, in the fabrication of orthodontic wire, stents and Judet staples. Although a considerable amount of these biomedical devices is utilized in Brazil and a fraction of it is already made here, all nitinol used is bought abroad. Thus, it is important to develop the necessary know-how to fabricate NiTi wire and sheet. It would mean less importation with job creation and wealth generation for the country. In this work nitinol was obtained powder metallurgy from elemental powders of Ti and Ni using uniaxial compression and uniaxial compression followed by isostatic compression. The final densities achieved were determined by the Archimedes method. The precipitation of intermetallic secondary phases was studied and the samples were characterized by metallographic analysis, optical microscopy and X-ray diffraction. Results indicated that 50 hours sintering route showed a low amount of intermetallics, and no trace of unreacted powder. XRD and metallography at room temperature indicated B19’ as the predominant phase, which corresponds to martensite. Although density results showed little dispersion, the most dense sample was compacted under uniaxial compression and presented 4.8 g/cm3, corresponding to 20.84% porosity. Density variation was considered normal to the measurement process and independent of the compaction mode

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Pós-graduação em Engenharia Elétrica - FEIS

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Pós-graduação em Medicina Veterinária - FCAV

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Relevância:

20.00% 20.00%

Publicador:

Resumo:

In contemporary industrial, welding processes are widely used, this is the most important process of joining metals used industrially. The welding can be used to build simple structures, like doors and gates for instance, in the same way can be used in situations of high responsibility, such as the nuclear industry and oil industry. Dissimilar welding is a case of welded joints, is characterized by the junction between different materials, for this case, stainless steel and carbon steel that are widely used in steam lines, power plants, nuclear reactors, petrochemical plants. Because their different mechanical and corrosive properties, the join, stainless steel with carbon steel, not only meets environmental requirements and also reduces cost. By using penetrating liquid tests, macrograph, hardness and tensile test was compared the possibility of replacing the current use of 309 rods as filler metal in dissimilar welding between carbon steel and stainless steel by add-on material carbon steel essentially, in this case E7018 coated electrode was used, but without the coating. After analysis of the results and for comparison, was proposed with some certainty that it is possible to replace the addition of materials, thus leading economy in this process widely used in the modern industry

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The purpose of this work was the study of numerical methods for differential equations of fractional order and ordinary. These methods were applied to the problem of calculating the distribution of the concentration of a given substance over time in a given physical system. The two compartment model was used for representation of this system. Comparison between numerical solutions obtained were performed and, in particular, also compared with the analytical solution of this problem. Finally, estimates for the error between the solutions were calculated