Experimentos sistemáticos de crescimento de cristais pelo método de soluções sólidas óxidas de GdAlO3:Cr3+ (estrutura pseudo perovskita), foram efetuados em diversas composições de solventes. Os perfis de concentrações dopante (Cr3+) e do solvente (Pb),em amostras previamente selecionadas e os coeficientes de segregação efetivos foram determinados e comparados com os dos cristais crescidos pelo método Czochralski. Modelos teóricos foram desenvolvidos para o entendimento dos resultados experimentais e outros são propostos com o objetivo de fornecer tratamentos alternativos para os efeitos dos parâmetros de crescimento tais como: flutuações térmicas, forma geométrica nucleações secundárias, evaporação do dopante, reações químicas e estabilidade de crescimento na homogeneidade das soluções sólidas. Devido ao interesse científico-tecnológico também foram crescidos outros cristais de estrutura perovskita como GdAlO3:La3+, LaAlO3:Cr3+ e NdAlO3:La3+ pelo método de fluxo e GdAlO3:Cr3+:La3+, pelo método Czocharalski e os resultados das experiências de crescimento estão descritas neste trabalho. / Systematic growth experiments by flux method of the oxides solid solutions of GdAlO3:Cr3+ (perovskite type) were done with several solvents compositions. The doping (Cr3+) and solvent (Pb) concentrations profiles in selected samples, and the effetive segregations coefficient were determined and compared with those obtained by Czochralski method. Theoretical models for crystal growth process were developed to understand the experimental results, and others are proposed to give alternative treatment on several growing parameters like thermal fluctuations, geometric crystal shape, secondary nucleations, doping evaporations, chemical reactions and growth stability effects in the solid solutions homogeneity. Due to scientific and technological interest, also were grown other perovskite crystals like GdAlO3:La3+, LaAlO3:Cr3+ and NdAlO3:La3+ by flux method and GdAlO3:Cr3+:La3+ by Czochralski method and the results are descrived in the present work.

Work purpose – to determine permanent quickness and power manual loads influence on skeleton muscle anaerobic potential. 11 of the best Lithuanian short distance runners and 8 persons, who do not go in for sports, were attending in research. Also, there were used adequate testing results and trainings processes information of 8 world short distance runners. They took anthropometrical information measurements from researched, body mass index was estimated (BMI), maximum and comparative legs muscles power was assessed, maximum running and 60m drubbing speed measured. Gained results showed that the best world short distance runners reached better maximum running speed, but maximum and comparative muscles power indicators were not differ from Lithuanians short distance runners. Persons, who do not go in for sports, maximum and relative powers and maximum running speed meaning in worse than researched Lithuanian short distance runners, who go in for sports. When they were running 60m only 10m they were going faster than the best world short distance runners. Persons, who do not go in for sports run 60m distance slower than other researched group members. They also reached slower speed increase and after 50m they got tired. When the best Lithuanian short distance runners of annual training facts were analyzed then came out that in annual training cycle was applied more exercises which needed power and had higher power indicators. Thus, Lithuanian short distance runners faster run 6... [to full text]

Experimentos sistemáticos de crescimento de cristais pelo método de soluções sólidas óxidas de GdAlO3:Cr3+ (estrutura pseudo perovskita), foram efetuados em diversas composições de solventes. Os perfis de concentrações dopante (Cr3+) e do solvente (Pb),em amostras previamente selecionadas e os coeficientes de segregação efetivos foram determinados e comparados com os dos cristais crescidos pelo método Czochralski. Modelos teóricos foram desenvolvidos para o entendimento dos resultados experimentais e outros são propostos com o objetivo de fornecer tratamentos alternativos para os efeitos dos parâmetros de crescimento tais como: flutuações térmicas, forma geométrica nucleações secundárias, evaporação do dopante, reações químicas e estabilidade de crescimento na homogeneidade das soluções sólidas. Devido ao interesse científico-tecnológico também foram crescidos outros cristais de estrutura perovskita como GdAlO3:La3+, LaAlO3:Cr3+ e NdAlO3:La3+ pelo método de fluxo e GdAlO3:Cr3+:La3+, pelo método Czocharalski e os resultados das experiências de crescimento estão descritas neste trabalho. / Systematic growth experiments by flux method of the oxides solid solutions of GdAlO3:Cr3+ (perovskite type) were done with several solvents compositions. The doping (Cr3+) and solvent (Pb) concentrations profiles in selected samples, and the effetive segregations coefficient were determined and compared with those obtained by Czochralski method. Theoretical models for crystal growth process were developed to understand the experimental results, and others are proposed to give alternative treatment on several growing parameters like thermal fluctuations, geometric crystal shape, secondary nucleations, doping evaporations, chemical reactions and growth stability effects in the solid solutions homogeneity. Due to scientific and technological interest, also were grown other perovskite crystals like GdAlO3:La3+, LaAlO3:Cr3+ and NdAlO3:La3+ by flux method and GdAlO3:Cr3+:La3+ by Czochralski method and the results are descrived in the present work.

Athletic performance assessments are important for identifying physical giftedness, monitoring athlete progress and supporting training recommendations. Sprint performance is a key component in athlete success both in athletics and field-based sports, and talent identification testing batteries often include sprint and jump assessments. Jumping and sprinting share a number of similar characteristics and research has shown that the relationships between sprint and jump tests depend on the recorded segment of the sprinting task, type of jump performed, and the speed and sex of the athlete. The majority of this research has been conducted in small, single sex, similar athlete cohorts and there has yet to be an analysis of a large cohorts multi-sport population with both male and female groups. Understanding the relationships between sprint ability and horizontal jump performance, based on large groups of athletes separated by sex can provide great insight into the shared and independent value of sprint and jump performance tests to support athlete testing and development. Therefore, the purpose of this study was to investigate the relationships between horizontal jump tests and sprint performance within different athlete sexes and sprint ability. To the authors’ knowledge, this is the first study with a large population sample of multisport athletes, with differing sprint and jump abilities. The associations and relationships between horizontal jump performance in standing broad jump (SBJ) and standing triple jump (STJ) with 0-10m and 30-40m sprint time in a group of athletes participating in a talent identification event were investigated in this study. Correlations and linear regressions were assessed with athletes grouped only by sex (male (n = 742), and female (n = 610)), and then grouped by sex and speed (fast = -0.5 SD, slow = +0.5 SD) for both 0-10m and 30-40m time separately. When grouped only by sex there were very large and large associations between sprint and jump measures (r = -0.533 to -0.717), and linear regression equations explained 37.4% to 55.5% of the variance. When grouped by sex and speed, slow athletes showed stronger associations (r = -0.353 to -0.488) than fast athletes (r = -0.088to -0.307). Linear regressions explained 20.3% to 28.5% of the variance in slow athletes, but only up to 12.0% of the variance explained in fast athletes. Linear regressions in slow and fast males all included SBJ as a predictor, but not STJ. Linear regressions in slow and fast females all included STJ as a predictor, but not SBJ. Overall, these results support the use of general sprint and jump tests for slower athletes, the importance of both sprint and jumps tests with higher resolution in faster athletes, as well as the utility of different jump tests to evaluate lower limb performance between sexes. / Graduate

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Att, Thais Oliveira mestradoprofissional@fgv.br/ 3799-7764 on 2018-03-06T00:12:08Z (GMT) / Submitted by Mychaeell Cardoso (mychaeell@gmail.com) on 2018-03-06T03:00:37Z No. of bitstreams: 1 012 - Mychaeell Cardoso.pdf: 1052433 bytes, checksum: f275f8309067c6ad7a5838d67f518552 (MD5) / Approved for entry into archive by Thais Oliveira (thais.oliveira@fgv.br) on 2018-03-06T19:31:55Z (GMT) No. of bitstreams: 1 012 - Mychaeell Cardoso.pdf: 1052433 bytes, checksum: f275f8309067c6ad7a5838d67f518552 (MD5) / Made available in DSpace on 2018-03-07T14:20:45Z (GMT). No. of bitstreams: 1 012 - Mychaeell Cardoso.pdf: 1052433 bytes, checksum: f275f8309067c6ad7a5838d67f518552 (MD5) Previous issue date: 2018-02-06 / O grande crescimento da frota de automóveis nos países em desenvolvimento viabilizou uma sensível melhora na produtividade e bem-estar da população, mas a intensificação do tráfego de veículos trouxe também uma elevação no número de acidentes e fatalidades no trânsito. Em meio a esse cenário, a ONU, por intermédio da OMS, propôs em maio de 2011 que os governantes dessem maior atenção ao tema e estabeleceu um objetivo de redução no número de acidentes, pautado por propostas de ajustes na gestão do trânsito, entre elas a redução da velocidade máxima. Nesse ambiente, Fernando Haddad assumiu a prefeitura de São Paulo em 2013 e se propôs a fazer da gestão da mobilidade urbana um dos marcos do seu governo. A partir disso, o então prefeito, através da CET-SP, propôs uma série de intervenções no trânsito da cidade, uma delas, foi a alteração da velocidade máxima permitida em algumas vias. Tal política foi embasada pelo sucesso alcançado em países desenvolvidos na redução dos acidentes a partir desse mecanismo, mas os estudos internacionais sobre o assunto questionam se a performance da redução dos acidentes devido a alteração na velocidade máxima permitida em países em desenvolvimento, teria a mesma eficácia demonstrada nos países desenvolvidos. Esse questionamento foi levantado por pesquisas internacionais, devido à dificuldade que os países em desenvolvimento apresentam em tornar efetiva a prática de leis e políticas públicas. A estratégia de identificação da pesquisa tem como referência a base de acidentes reportadas pelas seguradoras da cidade de São Paulo agrupada por via e o uso da metodologia econométrica de diferenças-em-diferenças. Os resultados apurados apontam que a redução da velocidade máxima em São Paulo foi neutra em relação aos acidentes; dessa forma, será necessário buscar outros mecanismos para efetivamente reduzir o número de acidentes na cidade. / The large growth of the car fleet in developing countries has led to a significant improvement in population productivity and well-being, but the intensification of vehicle traffic has also led to an increase in the number of traffic accidents and fatalities. Amid this scenario, the UN, through WHO, proposed in May 2011 that the governments should pay more attention to such an issue and established a goal of reducing the number of accidents, based on proposals for adjustments in traffic management, among them the maximum speed reduction. In this environment, Fernando Haddad started his mandate of Mayor in São Paulo City in 2013 and proposed to make urban mobility management one of the marks of his government. From this, the mayor, through CET-SP, proposed a series of interventions in the city traffic, one of which was the change of the maximum speed allowed in some city roads. This policy was based on the success achieved in developed countries in reducing accidents with this mechanism, but the international studies on the subject question whether the performance of the reduction of the accidents due to the change in the maximum speed allowed in developing countries would have the same effectiveness demonstrated in developed countries. This questioning was made by international researches, due to the difficulty of the developing countries in making the practice of laws and public policies effective. The basis of accidents reported by insurers in the São Paulo city, grouped by roads, and the use of econometric differences-in-differences methodology are the reference of this research identification strategy. The results show that the reduction of maximum speed in São Paulo was neutral in relation to accidents; therefore, it will be necessary to seek other mechanisms to effectively reduce the number of accidents in the city.