Doses e fontes alternativas de nitrogênio no milho sob plantio direto em solo arenoso

The objective of this work was to evaluate the effect of nitrogen sources and rates on maize nutrition and grain yield under no-tillage system in sandy soil. The experiment was conducted in a Typic Quartzipsamment, in the city of Cassilandia, State of Mato Grosso do Sul, Brazil. A completely randomized block design was used in a factorial array 3x4 with four replicates. Treatments consisted of three sources [urea, extruded urea with starch (Starea), and ammonium sulfonitrate with nitrification inhibitor of 3,4-dimethylpyrazole-phosphate (Entec (R) 26)] and four rates (0, 45, 90 and 180 kg ha(-1)) of nitrogen, applied in side-dressing when the plants presented four and six expanded leaves. The nitrogen source affected N, K, and S concentration in the leaf, but did not interfere in the components of production and maize grain yield. Nitrogen application like ammonium sulfonitrate promoted higher concentrations of N, K and S in the maize leaf in relation to the urea, especially in the larger rates studied. Side-dressing nitrogen fertilization increased the number of ears per plant, number of grains per ear and grain yield, grown under no-tillage system in sandy soil, independent of the used source.

Carta de Aptidão para a implantação de rodovias e avaliação de alternativas de traçado com uso de geotecnologias

This study discuss the use of the geotechnologies to aid the planners on the terrain aptness definition for highways implantation and on the different trace evaluation to the extention of the Governador Carvalho Pinto highway, between Taubaté-SP and Aparecida do Norte-SP. Fratures on the area were mapping using Landsat ETM+, band Pan. In order to elaborate the phisical aptness chart for highway implantation was used the Analitical Hierarchy Process (AHP) operation, in on geographical information system (GIS). Using GIS were realized a ponderate middle with the soils, rocks, relief, slope, fractures and land use/cover maps. Using this physical aptness chart and joinning it with urban and restrict areas (that was inserted by the Boolean operation), were obtained a viability chart for highway implantation. Based on it were proposed three aleatory traces for the Carvalho Pinto highway. This traces were evaluated with the cross tabulation operation. The integration of the restrict areas, land use and phisical aptness in digital media can offer for the planners the cartography of the viability for the highway implantation. The evaliation of these three traces, based on the viability chart, can subsidyse the decision by the planners.

Dificuldades e alternativas encontradas por licenciandos para o planejamento de atividades de ensino de óptica para alunos com deficiência visual

Partial outcomes of a study aimed to verify future High School teachers performance during the development of a Teaching Practice undergraduate course. The student teachers were asked to plan, elaborate and teach, in a classroom situation, optics topics to a class which included visual handicapped pupils. Data analysis shows that the main difficulties found by the student physics' teachers are related to which approach will be used to perceive phenomena dependent on vision and also to the need to break away from traditional pedagogy.. On the other hand, as alternatives, future teachers have shown creativity in order to overcome passive aptitudes related to this educational problem, working out methodological strategies that do not require the knowing/seeing relation, as well as, emphasizing oral communication within the physics teaching context. Copyright by the Sociedade Brasileira de Física.

Concepções da atividade física: Perspectivas para o fortalecimento da nação

From the 1930's, particularly during World War II, some different phenomena rise as alternatives to strengthen the people's physical, especially in countries like Germany and Italy. Keeping different proportions, that phenomenon was seen in Brazil through a policy to increase the value of the physical activities, mainly during the Estado Novo. This article tries to analyze that policy.

Alternativas para o tratamento da esquistossomose: Caracterizacao fisico-quimica do complexo de inclusao entre praziquantel e hidroxipropil-β-ciclodextrina

Praziquantel (PZQ) is the drug of choice commonly used for the treatment of shistosomiasis. However, it has low aqueous solubility, which could limit its bioavailability in the body. To circumvent these features, an inclusion complex with hydroxypropyl-beta- cyclodextrin (HP-β-CD) was prepared. Thus, the objective of this work was to prepare and characterize the PZQ/HP-β-CD inclusion complex. Morphological, spectroscopic, and calorimetric analysis showed the first signs of the guest/host interaction. The complexation kinetic analysis was used to determine the kinetic constant and, besides that, it was possible to establish the time consumed to reach equilibrium. Using the solubility isotherm, it was observed that the interaction with HP-β-CD increased 2.4 fold the aqueous solubility of plain PZQ. In vitro cytotoxicity tests, using fibroblast cells, evidenced no toxicity for these cells at the concentrations tested. These results demonstrated that there is a potential use of PZQ in formulations with HP-β-CD.

Concepções de surdez: A visão do surdo que se comunica em língua de sinais

At this time, diverse views on deafness are present in society. Such views, in general, arecharacterized by theoretical disputes between communicative possibilities - either oral or gestural - based onthe importance of having appropriated oneself of a language code for the development of language, which isessential in the constitution of subjectivity of human beings. Thus, this study aimed to identify the conceptionsof deaf people had about their condition. To collect the data we used semi-structured interviews, applied toten participants who were deaf adult users of the Brazilian Sign Language - Libras. The interviews were taped,transcribed and subjected to content analysis. The results indicate that the conceptions of deafness constitute amultifaceted view on this condition, infl uenced by social relations throughout each person's life trajectories. Theresearchers perceived that learning Libras enabled deaf persons to constitute their own assertiveness as someonewho is different, with different needs.

Influência das concepções europeias na formulação do pensamento urbanístico paulista

This article aims to present a list of the main influences experimented by architects and urbanists to formulate an urban thought of Sao Paulo City. This way, it will be discussed the main issues raised between the first decades of the XX Century until the 1950s, trying to foresee how the engineers and architects worked to incorporate the urbanistic proposals from Europe and the United States. On the first three sections of this article, it will be presented the concepts that effectively impacted the paulista urban thought of the first half of the XX Century: Sanitarism, the pendulum design: between the Mesologic Theory and the Microbian Theory; Camillo Sitte's historicist formulation; Howard Garden Town and the French experience. Our analysis was formulated by having as a reference a broad and systematic literature, documents stored at Arquivo Histórico Municipal de Araraquara (SP), visits to Faculdade de Arquitetura e Urbanismo da USP Library and to Faculdade de Ciências e Letras da Unesp, Araraquara. The analysis shows that two urbanistic planner streams that happened in São Paulo State were clearly influenced by the conceptions that led the urbanistic debates in the first half of the XX Century. So, these conceptions compose a painting of the urban interventions in São Paulo City.

Segmentações alternativas e constituintes prosódicos em Português brasileiro: uma análise através de canções da MPB

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

Uma nova metodologia de projeto e controle para o inversor Boost (CSI) monofásico, para o aproveitamento de fontes alternativas e renováveis de energia elétrica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

União Européia: a luta pelo reconhecimento identitário e a questão da cidadania supranacional

Pós-graduação em Ciências Sociais - FFC

Leitura de imagens: as concepções dos professores de educação infantil

Pós-graduação em Educação - IBRC

Capacitação de agentes multiplicadores para a semana da água 2005: concepções e práticas de educação ambiental

Pós-graduação em Educação - IBRC

Educação ambiental e educação infantil numa área de proteção ambiental: concepções e práticas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Educação ambiental e escola pública: concepções e práticas pedagógicas nos materiais didáticos institucionais (1988-2005)

Pós-graduação em Educação - IBRC

Projetos de educação ambiental no contexto escolar: concepções e práticas

Pós-graduação em Educação - IBRC