79 resultados para Hidróxidos duplos lamelares


Relevância:

10.00% 10.00%

Publicador:

Resumo:

In the competitive judo, the form as a trainer organizes the process of his/her athlete's training is a very important task for a good acting and a better use of the technical procedures. There is great importance in determining the exercise intensity for the judocas training due to the interest for the high income in several competitions, and few studies returned for this research area, involving those athletes' different physiologic conditions. Therefore, it is necessary to improve protocols of physical evaluation for this modality, increasing his/her applicability. The present study aimed at to verify the validity of a protocol of specific aerobic test of the judo (technique ipon-seoi-nague), no exhausting, adapted of the method of CHASSAIN (1986), using deltas of variations of the lactacidemia and of the Scale of Perception of Effort of Borg, in athletes well. The test adapted to the judo constituted of four exercise series with two efforts similar (double) of 180 seconds with one interval of 90 seconds among them. The series of exercises were accomplished in consecutive days. The intensities of the double tests were of 85%, 95%, 105% and 115% of the minimum lactato for each participant. This work used the technique ipon-seoi-nague, obeying the reasons effort-pause individualized for each athlete, that you/they correspond to the intensities of exercises proposed by the protocol of CHASSAIN (1986). In that way, the athletes applied a blow (maximum speed) and they rested some seconds, depending on the regime effort-pause of the session. At the end of each collection collection of blood (25NL) of each participant's earlobe was accomplished, seeking to measure the concentration of sanguine lactato. The collections were accomplished at the end of the first and of the second efforts, in each one of the series. For the analysis of the Perception of the athletes' Effort, the Scale of Perception... (Complete abstract click electronic access below)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The geophysical methods are used as tools that, together with other data, assist in target detail and sizing of ore bodies. This paper presents the results of the application of DC resistivity geophysical method on a manganese mineral occurrence located in Itapira, in the northern portion of São Paulo state, hosted predominantly in schists and quartzits of Itapira Group. The integration of geophysical data resulted in the elaboration of electrical resistivity models, where it was possible observe that the mineralized body, composed predominantly of manganese oxides and hydroxides, has a pattern of high resistivity (above 5000 Ω.m) both surface and subsurface. The contrast with the host rock is characterized mainly by different minerals assemblages and by the presence of local groundwater. The results accomplished in this paper reveal that the application of DC resistivity method is valid in primary evaluations of supergene deposits

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Studies of mafic-ultramafic bodies have been carried out through the years due to their great use on the interpretation of geochemical and geotectonic processes that took place in Earth's history. Amongst them, chromitites are notably recognized for being excellent indicators of their parental magma chemistry and of different geotectonic environments, as well for frequently containing associated noble metals mineralization. Thus the investigation of one of this ultramafic bodies that occurs inside the Pilar de Goiás Greenstone Belt was proposed, resulting in a detailed map of the chromitites and country rocks, as well as innumerous new data on the chemistry of chromite and associated matrix and accessory minerals. These studies were based upon geological field observations, optic and Scanning Electron Microscope (SEM), besides electron microprobe and cathodoluminescence analysis performed at the “Eugen F. Stumpfl Laboratory” of the Montanuniversität Institute of Resource Mineralogy, University of Leoben - Leoben, Austria. The chromitites are composed of 40-70% in volume of chromite (~50% on average), 14-55% of talc (~30% on average), 3-60% of chromium rich chlorite (~20% on average), traces to 4% of iron hydroxides and traces to 3% of rutile (1,5% on average). The chromite occurs as large spherical aggregates or as fine grained subhedral crystals disseminated in the matrix. This aggregates have diameters of 0.3-1.5 cm (1 cm on average) and are extremely well rounded, massive to intensively fractured, and commonly deformed to ellipsoids. When observed under the microscope, these aggregates show well rounded to slightly irregular borders, but on their interiors, these structures are represented by fine to medium grained euhedral to subhedral chromite crystals that have sharp contacts between themselves. The rock's matrix is basically made of chlorite and talc that define a metamorphic foliation (Sn), being the talc an alteration product ...

Relevância:

10.00% 10.00%

Publicador:

Resumo:

O presente estudo objetivou verificar a validade de um protocolo de teste aeróbio específico do judô (técnica ipon-seoi-nague), não exaustivo, adaptado do método de CHASSAIN (1986), utilizando deltas de variações da escala de percepção de Borg e da freqüência cardíaca em atletas bem treinados. O teste adaptado ao judô constituiu de quatro séries de exercício com dois esforços iguais (duplos) de 180 segundos com um intervalo de 90 segundos entre eles. As séries de exercícios foram realizadas em dias consecutivos. As intensidades dos testes duplos foram de 85%, 95%,105% e 115% do lactato mínimo para cada participante. Este trabalho utilizou a técnica ipon-seoi-nague, sendo que as razões esforço-pausa foram específicas para cada atleta, e correspondem às intensidades de exercício propostas pelo protocolo de Chassain (1986). A escala de percepção de esforço de Borg foi mostrada ao final do primeiro e do segundo esforços, em cada uma das séries, para que o atleta determinasse o nível de cansaço. Para análise da freqüência cardíaca foi utilizado um freqüencímetro, Polar Vantage NV, obtendo freqüência cardíaca concomitantemente a escala de Borg, ao final de bloco de esforço. Dessa maneira, foram obtidos dois deltas de variações entre o primeiro e o segundo esforços, para escala de percepção de Borg (ΔBORG) e FC (ΔFC). Uma vez que foram utilizadas quatro intensidades, foi possível determinar quatro ΔBORG e quatro ΔFC. Assim, a partir de duas regressões lineares (uma para o Borg e outra para a FC), foi possível determinar as razões esforço:pausas críticas do exercício na técnica específica do Judô, a partir da determinação das intensidades nas quais a variação de Borg e da FC foi igual a zero (ΔBORG=0 e ΔFC=0). Para validar esses procedimentos adaptados de Chassain (1986) ao Judô, foi realizado o teste de Lactato Mínimo Adaptado, conforme sugerido por Azevedo (2002).

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pós-graduação em Química - IQ

Relevância:

10.00% 10.00%

Publicador:

Resumo:

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

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

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

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Conselho Nacional de Desevolvimento Científico e Tecnológico (CNPq)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Pós-graduação em Agronomia - FEIS

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)