The columnar to equiaxed transition of horizontal unsteady-state directionally solidified Al-Si alloys

Experiments were conducted to investigate the influence of thermal parameters on the columnar to equiaxed transition during the horizontal unsteady-state directional solidification of Al-Si alloys. The parameters analyzed include the heat transfer coefficients, growth rates, cooling rates, temperature gradients and composition. A combined theoretical and experimental approach is developed to determine the solidification thermal variables considered. The increasing solute content in Al-Si alloys was not found to affect significantly the experimental position of the CET which occurred for cooling rates in the range between 0.35 and 0.64 K/s for any of three alloy compositions examined. A comparative analysis between the results of this work and those from the literature proposed to analyze the CET during upward vertical solidification of Al-Si alloys is reported and the results have shown that the end of the columnar region during horizontal directional solidification is abbreviated as a result of about six times higher thermal gradient than that verified during upward unidirectional solidification of alloys investigated.

Revendo o gênero: a representação da mulher no Bildungsroman feminino contemporâneo

Pós-graduação em Letras - IBILCE

Política cultural: o audiovisual

Not available

Luzes e foco sobre Kracauer

Este artigo procura resgatar a importância dos trabalhos realizados pelo frankfurtiano Siegfried Kracauer. Além de revisitar alguns textos traduzidos no Brasil, este trabalho apresenta também algumas aproximações entre o pensamento de Walter Benjamin e Kracauer.

Serviço social e projeto ético-político profissional: contributos da extensão universitária

Pós-graduação em Serviço Social - FCHS

Heavy Metals Extracted by DTPA and Organic Acids from Soil Amended with Urban or Industrial Residues

Understanding soil responses to the application of urban or industrial residues is necessary. In the current experiment, both sources of residues were applied to the soil surface of a Hapludox soil for 8 years. The four residues studied were biodigested and centrifuged sewage sludge (LB and LC, respectively), steel slag from the metallurgic industry (E), and limed mud from the pulp and cellulose industry (LCal). The residues were applied at 0, 2, 4, and 8 Mg ha(-1) four times from 2002 to 2010 when soybean was cultivated in the summer and lopsided oat and sorghum were cultivated during the winter. The contents of heavy metals were evaluated with diethylenetriaminepentaacetic acid (DTPA) and organic acids. The LB was the residue that increased the contents of soil micronutrients and heavy metals to their greatest levels, although within limits that impair the risks of environmental contamination.

Cartas e escrita: práticas culturais, linguagem e tessitura da amizade

Pós-graduação em Educação - IBRC

Glycolipid Sensing and Innate Immunity in Paracoccidioidomycosis

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

Heating value of eucalypt wood grown on SRC for energy production

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Subtropical Cyclones over the Southwestern South Atlantic: Climatological Aspects and Case Study

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

EFFECT OF BIOMETRIC VARIABLES ON TWO-DIMENSIONAL ECHOCARDIOGRAPHIC MEASUREMENTS IN THE RED-TAILED BOA (BOA CONSTRICTOR CONSTRICTOR)

The effects of body biometrics on cardiac measurements and description of cardiac anatomy were performed in red-tailed boas (Boa constrictor constrictor) (n = 29) using real-time B-mode ultrasonography. Statistical comparison of measured cardiac metrics according to sex and body measurements demonstrated no significant difference between sexes but a highly significant linear increase between body length and mass and all cardiac metrics.

Manejo da adubação com sulfato de amônio no desempenho produtivo do milho cultivado após aveia e trigo

The time, dose and applied nutrients in corn have a direct effect on its productivity. Therefore, the objective was to study the application of N and S in corn as ammonium sulfate, in succession to wheat and oats and evaluate different forms of fertilizer management. The experiment was conducted in a randomized block design in Oxisol (Hapludox). The five treatments with N, at a dose of 120 kg ha(-1) were applied in 20 plots (5x4), according to the management of fertilizer: T1-N (120 kg ha(-1)) full at sowing, T2-N (120 kg ha(-1)) total coverage; T3-N (40 kg ha(-1)) at sowing and N (80 kg ha(-1)) in coverage; T4-N advance in wheat sowing and sowing oats (120 kg ha(-1)), T5-(control). The S doses were corresponding to their concentrations in the fertilizer. Only wheat received a dose of 24 kg N ha(-1) at sowing all plots and oats received 24 kg N ha(-1) at sowing only the portions related to treatment with anticipation of corn N (T4). We evaluated the biomass production of winter crops (oats and wheat), according to the fertilization at sowing, and also the influence of winter crops and management of ammonium sulfate, the corn yield. The oats produced more dry matter in relation to wheat, positively influencing the corn yield, regardless of fertilizer management. The anticipation of ammonium sulfate, the sowing of oats, was favorable to corn yield, equating to other forms of management of fertilizer. Rotation corn and oats, forms management, ammonium sulphate, at seeding, topdressing or applied in split were equally efficient in corn yields.

Negócio de artesão: empreendendo no artesanato pessoal

Negócio de Artesão: Empreendendo no Artesanato Pessoal is a blog about entrepreneurship for craftspeople. The present work comes to help in the formation of the artisan, bringing material for study on business, experts and organizations who understand the subject show up to talk about several topics in a simple, concise and relaxed way. Moreover, we also want to tell the story of people who already undertake projects, and supplement their income by selling products they make, humanizing the testimonies. The overall goal is to generate interest for the entrepreneurial activity in people who do handcrafts or who want to start doing it. Thus, people who once used to handcraft just as a hobby can now find a way to supplement their income. The specific goals are: to encourage people to think of a business of their own; stimulate the creative industries through the blog; contribute to the formalization of the artisan; stimulate the exchange of knowledge among artisans; to spread the work of artisans. The methodology used for this project was exploratory research, using bibliographical and desk research, in addition to interviewing and direct and indirect documentary techniques. The method used was the deductive approach, as the methods of procedure used were the historical and comparative ones. As a result, we have the blog named Negócio de Artesão, which can be used both to inform the reader about how he can conceive their enterprise and to be able to make money from their work

O lúdico no ensino de espanhol como língua estrangeira

Este trabalho discute a importância do lúdico no processo de ensino e aprendizagem de espanhol como língua estrangeira. Para tanto, apresenta um panorama histórico com as principais concepções filosóficas, psicológicas e educacionais acerca da prática dos jogos. Os marcos de referência são, sobretudo, os estudos de Kishimoto, que operam uma releitura dos postulados de Froebel, Piaget, Vygotsky e Bruner. Esses pressupostos teóricos são levados ao contexto de aprendizagem da língua espanhola e constituem uma defesa de um ensino significativo do idioma, que se baseia na capacidade de criação, exploração e argumentação do aluno, e privilegia um ambiente de motivação e descontração. A partir de uma proposta educativa que valoriza a formação cognitiva, social e afetiva dos aprendizes, e se atenta a questões como o prazer e a alegria, encaminha-se uma breve análise dos livros didáticos de espanhol selecionados pelo PNLD, bem como uma observação da presença de atividades lúdicas nesses materiais. Diante da expressiva oferta de cursos de idiomas para idosos, e do crescente interesse desse público em aprender uma segunda língua, este estudo contempla, também, a cultura lúdica inserida no espaço de ensino a grupos da terceira idade, uma vez que os benefícios dos jogos e brincadeiras se estendem a qualquer faixa etária. São elaboradas, ainda, algumas atividades destinadas ao ensino de espanhol para esse público, pois nunca é tarde para brincar

Loss of nuclear poly(A)-binding protein 1 (PABPN1) causes defects in myogenesis and mRNA biogenesis

The nuclear poly(A)-binding protein 1 (PABPN1) is a ubiquitously expressed protein that plays a critical role in polyadenylation. Short expansions of the polyalanine tract in the N-terminus of PABPN1 lead to oculopharyngeal muscular dystrophy (OPMD), which is an adult onset disease characterized by eyelid drooping, difficulty in swallowing and weakness in the proximal limb muscles. Although significant data from in vitro biochemical assays define the function of PABPN1 in control of poly(A) tail length, little is known about the role of PABPN1 in mammalian cells. To assess the function of PABPN1 in mammalian cells and specifically in cells affected in OPMD, we examined the effects of PABPN1 depletion using siRNA in primary mouse myoblasts from extraocular, pharyngeal and limb muscles. PABPN1 knockdown significantly decreased cell proliferation and myoblast differentiation during myogenesis in vitro. At the molecular level, PABPN1 depletion in myoblasts led to a shortening of mRNA poly(A) tails, demonstrating the cellular function of PABPN1 in polyadenylation control in a mammalian cell. In addition, PABPN1 depletion caused nuclear accumulation of poly(A) RNA, revealing that PABPN1 is required for proper poly(A) RNA export from the nucleus. Together, these experiments demonstrate that PABPN1 plays an essential role in myoblast proliferation and differentiation, suggesting that it is required for muscle regeneration and maintenance in vivo.