Potencial Mineral de Rochas Metamáficas e Metaultramáficas da Faixa Itapira-amparo para Uso em Processo de Carbonatação Mineral no Sequestro de Co2

A redução das emissões de gases de efeito estufa representa um grande desafio tecnológico aos modelos industriais vigentes. Mecanismos de Desenvolvimento Limpo (MDL) e sequestro de CO2 fundamentam grande parte dos planos de crescimento sustentáveis, com vistas à obtenção de níveis mais seguros de CO2. Pesquisas promissoras consideram a técnica de sequestro de CO2, por meio da carbonatação mineral, em que silicatos ricos em magnésio, cálcio, ferro e manganês são transformados em carbonatos. Este trabalho teve por objetivo caracterizar, em caráter preliminar e exploratório, as rochas metamáficas e metaultramáficas dos Complexos Amparo e Itapira, com vistas à avaliação de seu potencial mineral para uso em processos de carbonatação mineral no sequestro de CO2; essas rochas constituem terrenos metamórficos de grau médio a alto, localizadas na região de Itapira, Amparo, Serra Negra e Lindóia (SP). As rochas metamáficas reúnem anfibolitos, actinolita xistos e hornblenditos, e encontram-se na forma de lentes ou camadas estiradas em intercalação com rochas supracrustais. As rochas metaultramáficas ocorrem em corpos pequenos e descontínuos, com composição mineralógica em geral rica em olivina, piroxênio e anfibólio. As rochas avaliadas no presente estudo apresentam potencial para carbonatação mineral, em particular aquelas com teores elevados de magnésio. Dessa forma, podem representar importante prospecto de avaliação de jazidas para utilização em processos de carbonatação mineral.

Manure production and mineral excretion in feces of gilts fed ractopamine

A study was conducted to evaluate the feces+urine produced per animal (FUPA), dry matter, mineral matter, organic matter, nitrogen, phosphorus, potassium and sulfur in feces of gilts fed diets with increasing levels of ractopamine (0, 5, 10 and 15 mg kg-1 of diet). A total of 468 finishing gilts were allotted into 36 pens. In two days of each week, feces and urine were daily sampled in four pens per treatment, quantifying the feces+urine. To determine the characterization of feces, two samples per week were taken daily, in nine pens per treatment. It was used a split plot design, considering the ractopamine level as the plot and the weeks as the subplots. There was no reduction in nitrogen amount in feces. An interaction was detected between ractopamine concentrations and weeks for FUPA and phosphorus, potassium and sulfur in feces. Ractopamine addition in diets for gilts has reduced the feces+urine production and nitrogen and phosphorus excretion. Higher values estimated for potassium content in feces of animals fed diets with 10 and 15 mg of ractopamine kg-1 were found between the second and third week. Increasing levels of ractopamine from 5 to 15 mg kg-1 promoted higher excretion of sulfur over the weeks of supply.

Análise comparativa da produção e composição físico-química do leite considerando a utilização de diferentes volumosos na alimentação de vacas Girolando

Pós-graduação em Medicina Veterinária - FMVZ

Performance of steers supplemented with mineral mixtures in the State of Mato Grosso

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

Composição química e atividade antioxidante da polpa e resíduos de abacate 'Hass'

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

Microalgas na Produção de Biodiesel: Extração e Composição Lipídica

The uninterrupted rise in emission of greenhouse gases open way to the use of biofuels, due to politics that focus on fuel safe, clean and renewable. The use of microalgae for biodiesel production has been described as one of the most promising sources of biomass for biofuels. The aim of this study was to evaluate the extraction and lipid profile of the microalgae Dunaliella tertiolecta, Isochrysis galbana and Tetraselsim gracilis. The extractions were performed with solvents chloroform /methanol and petroleum ether. The lipid profile was analyzed by gas chromatography after transesterification.The petroleum ether showed more efficiency in the extraction, the best result obtained was in the microalgae D. tertiolecta with 19.52% of lipid. The lipid profile analysis indicated a biodiesel stable to oxidation and elevated viscosity

Push-out bond strength of calcium hydroxide and mineral trioxide aggregate based sealers

The adhesiveness of six root canal sealers: Acroseal, Endo CPM, Epiphany, White MTA, Sealapex and Sealer 26 to dentin, was evaluated in a push-out test design. Methods: Twenty eight roots of freshly extracted teeth were gauged with a size 5 Largo drill. With a cutting machine slices of 2 mm were prepared, rinsed with 5.25% NaOCl and a final rinse with 17% EDTA, dried and filled with one of the sealers. After setting their bond strength was measured in a mechanical testing machine. The data were statistically analyzed by using a One Way ANOVA and post hoc Tukey test. Results: The mean and standard deviation from values of bond strength was: Sealapex 2.2±0.4; Endo CPM 3.8±1.3; White MTA 6.0±1.4; Epiphany 10.9±2.6; Sealer 26 12.3±2.3; and Acroseal 12.2±1.4. Acroseal, Sealer 26 and Epiphany presented a significantly (P<0.01) greater bond strength compared with the other sealers. Also White MTA showed higher adhesiveness compared with Endo CPM and Sealapex (P<0.01). Conclusion: The bond strength between endodontic sealers and root dentin was maximal when Acroseal, Sealer 26 and Epiphany were used; Sealapex e Endo CPM, in turn, presented the lowest bond strength mean values.

Formulação não linear: melhoria da composição corporal de frangos de corte

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

A influência da prática de atividade regular na composição corporal de pacientes com osteoartrite

Introduction: Osteoarthritis, osteoarthrosis or degenerative joint disease characterized by progressive loss of articular cartilage, pain, changes in subchondral bone, osteophyte formation and proliferation. Age, bone mineral density, joint instability, excess weight among others, are risk factors. Methods: To check the influence os physical exercise in patients with the disease were evaluated 39 patients over 50 years, both genders, with clinical and / or radiographic osteoarthritis were divided into experimental group (EG) and control group (CG). EG performed regular physical activity (aerobics) three times a week for four months, while CG was submitted to physical therapy painkiller in the same period. We analyzed demographics, BMI, basal metabolic rate and percentage of fat mass. Results: The results showed that regular physical activity reduced the body fat, but because of their characteristics and low-impact aerobics was not observed consistent benefits in muscle component. However, compared with the CG demonstrated a positive impact on other parameters of body composition.

Efeitos das antocianinas, ácidos hidroxinâmicos e vitamina C sobre a biometria, composição corporal e qualidade óssea de ratos Wistar

Pós-graduação em Medicina Veterinária - FCAV

Biomassa do fungo filamentoso Lasiodiplodia theobromae: composição química e utilização como nutriente para bioprocesso

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo sobre o uso de agregados reciclados na composição de concretos e argamassas

Two of the major problems caused by construction activity are the production of construction and demolition waste (CDW) and the exploitation of mineral resources, causing big impacts on the environment. Therefore, the recycling has been shown as an alternative to mitigate the harmful effects of waste on the urban environment and prevent the exploitation of new raw materials. This course work aims to study the behavior of recycled aggregates from Vale do Paraíba in concrete and mortar. Initially, it presents the definitions of recycled aggregates according to CONAMA Resolution No. 307/2002, the aggregate settings for concrete and mortar (such as the grain size, its origin and density, and the characterization parameters according to ABNT), and the definition of ACI method of concrete mix design. Afterwards, it presents the characterization of materials separated by assays. After that, it shows the theoretical concrete proportioning applying the ACI method and experimental concrete proportioning. Then, the analysis of results is performed to finally conclude that the materials provided can't be used to replace natural aggregates because they cannot have the same performance. With the studies, it could be observed that the recycled aggregate presents a great complexity and diversity in origin, therefore the form how the material should be handled requires great care

Estudo sobre o uso de agregados reciclados na composição de concretos e argamassas

Two of the major problems caused by construction activity are the production of construction and demolition waste (CDW) and the exploitation of mineral resources, causing big impacts on the environment. Therefore, the recycling has been shown as an alternative to mitigate the harmful effects of waste on the urban environment and prevent the exploitation of new raw materials. This course work aims to study the behavior of recycled aggregates from Vale do Paraíba in concrete and mortar. Initially, it presents the definitions of recycled aggregates according to CONAMA Resolution No. 307/2002, the aggregate settings for concrete and mortar (such as the grain size, its origin and density, and the characterization parameters according to ABNT), and the definition of ACI method of concrete mix design. Afterwards, it presents the characterization of materials separated by assays. After that, it shows the theoretical concrete proportioning applying the ACI method and experimental concrete proportioning. Then, the analysis of results is performed to finally conclude that the materials provided can't be used to replace natural aggregates because they cannot have the same performance. With the studies, it could be observed that the recycled aggregate presents a great complexity and diversity in origin, therefore the form how the material should be handled requires great care

Body composition and bone mineral density in male adults with hyperthyroidism. Which association?

Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2014

Caracterização de diferentes materiais de reparação endodontica: bioagregados, endosequence root repair material e agregado de trióxido mineral

Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz