Produtividade da cana-de-açúcar e definição de zonas específicas de manejo do solo

The correct spatial intervention in the administration of the plantation, arising from specific areas of soil mapping, can increase your productivity as well as profitability and yields in agriculture. The spatial and Pearson's relationships between sugarcane attributes and chemical attributes of a Typic Tropustalf were studied in the growing season of 2010, in Suzanapolis, State of Sao Paulo, Brazil (20 degrees 27'33 '' S lat.; 51 degrees 08'05 '' W long.), in order to obtain the attributes that had the best sugarcane productivity relationship. To this end, a geostatistical grid containing 118 sample points was installed for soil and plant data collection in an area of 10.5 ha with the third crop cut. The productivity of sugarcane (PRO) represented the attribute of the plant, while the attributes of the soil were: K+, Ca+2, Mg+2 and organic matter at depths of 0-0.20 m and 0.20-0.40 m. Relationships were calculated between the PRO and the attributes of the soil. Semivariograms were adjusted for all attributes, obtaining the respective krigings and the cross-validations. It was also made the cokrigings between the PRO and the soil attributes. The levels of the soil organic matter, for their evident substantial correlations, Sperman's Rho and spatial, with the productivity of sugarcane, are indicators of two specific areas of soil management strongly associated with the productivity of sugarcane. In such zones this productivity varies between 75.8-94.7 t ha(-1) and 101.0-119.9 t ha(-1), when the levels of organic matter respectively are 12.7-14.5 g dm(-3) (0-0.20 m) and 11.8-12.8 g dm(-3) (0.20-0.40 m).

Simulação numérica através do método dos elementos finitos e comparação experimental para obtenção de tensões e deformações específicas em fêmur com prótese total de quadril

Pós-graduação em Engenharia Mecânica - FEG

O currículo do estado de São Paulo nas aulas de Educação Física escolar: vantagens e desvantagens

O objetivo do presente estudo foi avaliar os discursos presentes na literatura a respeito do Currículo do Estado de São Paulo, especificamente a proposta de Educação Física. Para isso, foi realizada uma análise das produções da área nas temáticas: propostas curriculares, Educação Física escolar e sistematização de conteúdos. Foram encontrados referenciais teóricos que apresentavam diversas vantagens e desvantagens a respeito do Currículo do Estado de São Paulo. Entre as principais vantagens encontradas pode-se perceber que há uma sequência didática significativa desenvolvida no atual Currículo do Estado de São Paulo; os materiais didáticos foram considerados fundamentais para os professores e para os alunos e percebeu-se ainda a necessidade de sistematização dos conteúdos na área de Educação Física. Já entre as principais, verificou-se que o documento é considerado autoritário, pois o professor recebe a proposta pronta e acabada; faltam recursos materiais para trabalhar os temas propostos; falta de formação profissional para os professores efetivamente terem condições de implementarem o currículo e o mesmo não considera o contexto do professor e do aluno

Retornos crescentes e decrescentes e firma representativa: uma visão do Simpósio de 1930

This paper objective is to analyze the Theory of Increasing and Diminishing Returns from the perspective of the Symposium of 1930, written by Robertson, Sraffa and Shove. Besides these authors, are also treated other texts Robetson and Sraffa, and texts by Pigou and Robbins, expressing the similarity and difference of thought of each author with respect to the Laws

As vantagens comparativas brasileiras no comércio bilateral de soja com a China

Neste trabalho será analisado o comércio bilateral Brasil-China com embasamento teórico das vantagens comparativas (modelos ricardianos), do modelo de dotação de fatores “Heckscher-Ohlin” e do Modelo de Comércio Gravitacional. Tais conceitos serão corroborados por testes empíricos, utilizando-se a equação gravitacional simples e dois Indicadores de Comércio (IVCR e IOR), do ano de 1995 até 2005, demonstrando-se que o Brasil apresenta vantagens comparativas no comércio de soja com a China

Copa do mundo no Brasil: vantagens e desavantagens

A Copa do Mundo de futebol é uma das maiores comemorações esportivas mundiais o que lhe confere o status de megaevento esportivo. Em 2014, o Brasil sediará essa competição, no entanto, ainda existem vários pontos que devem ser investigados para se compreender melhor esse megaevento para o desenvolvimento do País. Assim, o objetivo do presente estudo foi investigar as vantagens e desvantagens da realização da Copa do Mundo de Futebol no Brasil em 2014, a partir do discurso da mídia. A metodologia qualitativa buscou analisar as notícias veiculadas pelo jornal Folha.com que é acompanhado via internet, no período que compreendeu os meses de Janeiro, Fevereiro e Março do ano de 2011. Foram coletadas 96 notícias que versavam sobre a Copa do Mundo 2014. Os resultados encontrados mostraram que 36,45% das notícias designaram-se como vantagens no âmbito da realização da Copa do Mundo no Brasil. Já as notícias que foram analisadas com pontos de destaque desvantajosos atingiram a marca de 56,25%. Foi observada uma diferença mínima nos pontos de destaque, pois enquanto as vantagens chegaram a 15 pontos, as desvantagens perfizeram 16 pontos de destaque demonstrando que a mídia aponta tanto para os aspectos positivos como negativos da realização da Copa no país. Dentre os principais aspectos positivos da realização da Copa no Brasil estão uma melhor visibilidade do País para o mundo e uma conseqüente expansão comercial do próprio território brasileiro, além da geração de empregos e melhoria na infra estrutura física do Brasil, desde construção de estádios até melhorias no transporte e aeroportos brasileiros. Aliado a tudo isso estão a expansão do turismo nacional e um forte aquecimento da economia, culminando com os legados que ficarão para o Brasil. Dentre os principais aspectos negativos estão os atrasos e...(Resumo complet, clicar acesso eletrônico abaixo)

Cor do solo na caracterização de áreas específicas de manejo para cultura do café

Pós-graduação em Agronomia (Ciência do Solo) - FCAV

Estratégias tolerogênicas antígeno-específicas visando profilaxia e terapia na artrite autoimune experimental

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

Análise comparativa de tensões e deformações específicas em uma estrutura treliçada, utilizando abordagem experimental e pelo método de elementos finitos

The process of knowledge construction is associated with physical or mechanical view of the phenomenon. In mechanical engineering courses should supplement their courses with physical or virtual learning devices to aid visualization of these phenomena. For the purpose of improving the mechanical engineering department laboratory practice was developed, through a project, a didactic device a trellis. The purpose of this work is the detailed study by comparing the theoretical results with the experimental results collected through the specific strains collected in the Catman. The study was iniatially done with nodes made of aluminum, giving results with high errors not allowing a good conclusion of results. For best results were achieved an improvement of the structure with strict we support the lattice and, thus, further study and greater quality of lattice structure

Viabilidade da geração de eletricidade a partir de fonte eólica on-shore: dificuldades e vantagens de expansão na matriz elétrica brasileira

The renewable energy sources presents an important role on the world's current context, its growing is essentially connected to the environmental issues and the energetic security, guided by the search for alternatives of energy. Among the alternative energy sources, the wind energy shows great importance in the brazilian territory, it has a great potential still unexplored and constant growth in the national electric matrix. The specific factor of generation, the conjuncture and the incentive politics influence on the expansion of wind energy in Brazil. Thus, the brazilian wind sector shows features which can be evaluated enable its developing. Keeping that in mind, the present work aims identify which are the advantages and the difficulties for the expansion of this energy source in the brazilian electric matrix. For that, the work studies the different parameters: features of electric generation of the different energy sources, incentive politics, generation costs, CO2 emission, evolution of wind energy in Brazil, the brazilian wind potential, and the regime of complementarily hydro-wind

Concepções sobre escola e gênero na perspectiva de crianças abrigadas

School and family are critical contexts to the development of concepts in childhood and few studies are conducted from the report of children when they live in rest-home. The aim of this study was to investigate concepts that children in rest-homes have about school and gender. There were 22 participants, including boys and girls, between 4 and 6 years, who were interviewed with open questions for content analysis. For these children the school was associated with an area of study opportunities, favorable to themselves, although by necessity or obligation, and possibly with the presence of conflicts. The gender was described from biological and psychosocial aspects and children attributed their gender identity at destination, learning and social advantages. Children feel they belong to a gender in a positive way, although by attributing disadvantages to the opposite gender, for example, relating male aggression to violence. Children reproduce some patterns and social characteristics of gender that probably were learned in different contexts. We conclude that studies in this area are important to identify children´s conceptions about school and sexuality, their roles and representations, especially when they live in an environment with such specific features as a rest-home.

Preparação e caracterização óptica de filmes híbridos dopados com o azocorante Disperse Red 1

The Sol-gel process has facilitated the processing of Organic-Inorganic Hybrid Materials with several scientific applications and technologies. The hybrid combine the advantages of the Sol-gel process with specific characteristics of organic polymers, allowing processing of thin films without fractures or fissures. The incorporation of azo dyes in polymer matrices has been widely used in the investigation of optical properties. The azo dye Disperse Red (DR1) presents optical alterations when exposed to visible or ultraviolet light. The alterations occur due to transitions of their isomers, trans and cis, caused by photoisomerization, due to electronic transitions of azo group (-N=N-), presenting photochromic and/or photorefractive effects. The hybrid system used in this work is the precursor 3- Glycidoxypropyl-Trimethoxi-silane (GPTS), the Tetraethylorthosilicate (TEOS) and DR1 as a dopant. The characterizations were performed using absorption spectroscopy UV-Vis which allowed the identification of the absorption bands and its variations when the samples were treated thermally and/or illuminated by ultraviolet light

Storage media for avulsed teeth: a literature review

Dental avulsion is the most severe type of traumatic tooth injuries because it causes damageto several structures and results in the complete displacement of the tooth from its socketin the alveolar bone. The ideal situation is to replant an exarticulated tooth immediatelyafter avulsion because the extraoral time is a determinant factor for treatment successand for a good prognosis. However, it is not always possible. The success of replantationdepends on a number of factors that may contribute to accelerate or minimize theoccurrence of root resorption or ankylosis, among which is the type and characteristicsof the medium used for temporary storage during the time elapsed between avulsionand replantation. Maintaining the tooth in an adequate wet medium that can preserve,as longer as possible, the vitality of the periodontal ligament cells that remain on rootsurface is the key to success of replantation. Recent research has led to the developmentof storage media that produce conditions that closely resemble the original socketenvironment, with adequate osmolality (cell pressure), pH, nutritional metabolites andglucose, and thus create the best possible conditions for storage. Although these storagemedia can now be purchased in the form of retail products, the most common scenariois that such a product will not be readily available at the moment of the accident Thispaper reviews the literature on the different storage media that have been investigatedfor avulsed teeth based on full-length papers retrieved from PubMed/Medline, Lilacs, BBOand SciELO electronic databases using the key words storage medium , transportationmedium , avulsion , tooth avulsion , replantation , tooth replantation , milk and propolis .After application of inclusion and exclusion criteria, 39 papers were selected and criticallyreviewed with respect to the characteristics, efficacy and ease of access of the storagemedium. The review of the lite