Retenção do dimetoato e sua relação com pH e teores de argila e matéria orgânica nos sedimentos da zona não-saturada de uma microbacia no nordeste paraense

Na agricultura familiar na Amazônia oriental, em particular no nordeste do Pará, são comuns os cultivos semi-perenes com pesada aplicação de agrotóxicos. Em virtude da ampla utilização desses produtos, principalmente o dimetoato, na microbacia hidrográfica do igarapé Cumaru, município de Igarapé-Açu (PA), foi avaliada a retenção dessa substância em amostras da zona não-saturada em laboratório, verificando-se também a influência do pH e dos teores de argila e de matéria orgânica nesse processo. Entre os diversos agrotóxicos utilizados na área, o dimetoato foi selecionado por apresentar maior potencial de lixiviação, segundo o índice GUS (Groundwater Ubiquity Score). Para a quantificação da retenção do dimetoato nos sedimentos da zona não-saturada foi realizado um experimento de sorção. Este último mostrou que, em termos percentuais, a sorção do dimetoato variou de 2.5% a 36.2% (concentração inicial 20 mg.^-1) e de 6.20% a 31.0 % (concentração inicial 10 mg. ^-1). Esses dados comprovam o elevado potencial de contaminação da água subterrânea por essa substância, devido, principalmente, à sua mobilidade e baixa retenção. Devido ao caráter hidrofóbico do dimetoato, que aumenta a sua afinidade com a matéria orgânica, a quantidade sorvida dessa substância se mostrou diretamente proporcional à de matéria orgânica presente nos sedimentos. O pH exerce efeito contrário a este, ou seja, quanto mais elevado o seu valor, menor é a quantidade de dimetoato sorvida. Em relação à variação do teor e ao tipo de argila, foi observado que esses fatores não influenciam na retenção do dimetoato, sendo esse resultado atribuído ao comportamento não iônico desse agrotóxico.

Diversidade genética molecular de progênies de dendezeiro

O objetivo deste trabalho foi avaliar a diversidade genética, entre e dentro de progênies de dendezeiro tipo dura, de origem Deli. A caracterização genética foi feita com uso de marcadores microssatélites em 24 progênies usadas na produção comercial de sementes, sendo 22 provenientes de autofecundação e duas de cruzamentos entre irmãos completos. Foi realizada análise de variância molecular entre e dentro das progênies, com posterior construção de um dendrograma. Observou-se baixa variabilidade genética nas progênies, com média de 1,32 alelos por loco e variância genética total igual a 0,3241. A maior parte da variação ocorreu entre progênies. A menor variabilidade genética dentro das progênies pode ser explorada nos cruzamentos com progênies endogâmicas de outras origens, o que facilitaria o alcance de heterose para o desenvolvimento de novas variedades.

Hidrocarbonetos policíclicos aromáticos e outras substâncias orgânicas na combustão de madeira para produção de carvão e em particulado atmosférico da cidade de Campo Grande /MS

Pós-graduação em Química - IQ

Demanda energética na colheita, degradabilidade e digestibilidade da silagem de híbridos de milho

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Anatomia da coluna vertebral torácica em auxílio de ressonância nuclear magnética

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Identificação e quantificação das proteínas miofibrilares, isoformas da cadeia pesada de miosina (MyHC) e o amaciamento da carne de bovinos Nelore (Bos indicus)

Pós-graduação em Genética e Melhoramento Animal - FCAV

Determinação das estratégias coletivas de forrageamento em Atta sexdens rubropilosa (Hymenoptera, Formicidae)

Pós-graduação em Agronomia (Proteção de Plantas) - FCA

Acúmulo de matéria seca e nutrientes de híbridos de sorgo sacarino em condições de safrinha em Selvíria-MS

Pós-graduação em Agronomia - FEIS

Demanda energética na colheita de híbridos de milho para silagem em função do estádio de maturidade e tamanho de partícula

Corn is the crop most used for making silage. The efficiency of the process should also be evaluated by cost per kg of dry matter harvested (kgDM). The objective of this study was to evaluate energy consumption in the harvest of corn hybrids for silage depending on the texture of the hybrid, four and three harvest maturities of particle sizes - Tp was used a tractor Massey Ferguson MF 610 model 86 cv. Cutting and harvesting the forage harvester is used model JF92 Z10. To obtain data on fuel consumption (CC) and time spent for each plot, we used a flow meter, installed near the fuel filter of the tractor. The experimental design was completely randomized in a split plot. The interaction between factors triple stage hybrid * Harvest * Tp. The velocity and displacement of the tractor were different for the maturities for hybrid hard texture. The CC schedule for hybrid dent increased harvest maturity earlier and at lower Tp. Consumption was lower by kgDM later maturity, hard texture and bite respectively. The theoretical power was higher in earlier maturity and yield were higher for hybrid hard texture in the most advanced. The CC was lower in late maturity and the hybrid hard texture can be used for silage in relation to the Cc and income in later maturity in higher Tp.

Effect of bleaching agents and soft drink on titanium surface topography

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

Low-temperature degradation of a Y-TZP ceramic after surface treatments

The purpose of this study was to evaluate the influence of zirconia surface treatments on low-temperature degradation (LTD). Disc-shaped specimens were subjected to one of four surface treatments, denoted as C (controlno surface treatment), Si (air abrasion with 30 mu m silica-modified alumina particles), Al (air abrasion with 30 mu m alumina particles), and Gr (grinding with 120 grit diamond discs). Half of the samples were submitted to autoclave treatment for 12 h (127 degrees C, 1.5 bar). Samples were characterized by x-ray diffraction and profilometer analysis and were subjected to biaxial flexural strength test. All of the groups exhibited an increase in the amount of monoclinic phase (m-phase) after LTD. The tm transformation was remarkable for the specimens from the C group, which also exhibited a significant increase in strength. The Gr group also exhibited an increase in strength but lower initial roughness, which probably suppressed LTD on the zirconia surface. The specimens subjected to air abrasion exhibited higher initial amounts of m-phase and a small increase in m-phase after LTD; the strength was not affected in these groups. The effects of LTD were different with each surface treatment applied. Apparently, LTD may be suppressed by smoother surfaces or the presence of an initial amount of m-phase on zirconia surface. (c) 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 101B: 1387-1392, 2013.

Microparticulated and nanoparticulated zirconium oxide added to calcium silicate cement: Evaluation of physicochemical and biological properties

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Leptomeningeal enhancement in computed tomography of feline brains

Contrast enhancement enables the verification of several pathological conditions that lead to vascular changes and/or breakdown of the blood-brain barrier. Examples of diseases that cause these disorders are: neoplastic diseases, vascular communications, active inflammation and cerebral ischemia. Several contrast enhancements located peripherically to cerebral lobes, in the topography of brain sulci and gyri, were identified on tomographic scan of twelve healthy cats that had their health confirmed through history, general and neurologic physical examination and polymerase chain reaction for feline leukemia (FeLV) and immunodeficiency (FIV) virus. This study aims to describe the tomographic contrast enhancement findings, which showed an identical appearance to the pia mater and arachnoid enhancement, also called leptomeninges. This finding is generally considered related to leptomeningeal diseases such as meningitis and neoplastic disease. However, in dogs, the leptomeningeal enhancement has already been described in healthy animals. This finding has a great importance in the interpretation of tomographic images of these animals since, so far, in the presence of these enhancements, meningeal disorders were suggested. Thus, the verification of other tomographic findings and the combination with other diagnostic methods are of great importance for the diagnosis of leptomeningeal disease.

Artemidia independente: Vidas Imperfeitas, o quadrinho em um diálogo entre linguagem e suporte

The term “independent media art” expresses an artistic-scientific process performed in the Art- Science Communication interface presented as Final Paper in Visual Arts baccalaureate modality. The first part consists in gather, in artisticscientific research, an overview of the production of independent comics, mainly in Brazil, as well as some of the manifestations that were derived from it. The identification is made from bibliographical and iconographical survey, both printed and virtual materials. The second part discusses the production of a comic of my own - Imperfect Lives - published independently. This work is inserted in the line of research “Artistic Processes and Procedures” of the Department of Fine Arts of the Art Institute of UNESP and describes: Creative process, production, dissemination and influences. The third and final section brings together the work done by me during the four-year course, whose theme has some relation with comics. Experiments are in various media, using one or another characteristic intrinsic to them. The monography includes as an appendix a copy of each issue of the fanzine Imperfect Lives. The methodology used was Freinetiana Educational Cybernetics, developed in the research group “Art media and Videoclip”, whose leading advisor is the one from this Final Paper. The result and discussion of the artistic research and scientific monography were reported in the following versions: PDF File repository for dissemination in the virtual library of the Institute of Arts. Hardcover version for physical collection in the Library of the Institute of Arts. Paper version for the committee. Template version appropriate for submission to International Scientific Congress in the area of Arts

Artemídia escrevente: a caligrafia entre a arte e o design

The term “writing media art” expresses an artisticscientific process performed in the Art-Science Communication interface presented as Final Paper in Visual Arts baccalaureate modality. The first part gathers, in artistic-scientific research, a historical overview of the relation between image and writing, which its main focus is calligraphy and its different expressions in art and design, including their interrelations. The identification is made from bibliographical and iconographical survey, both printed and virtual materials. This approach involves the selection of authors’ statements and comments in order to offer a deeper historical basis, since it comes to facts and events. The second part relates to the set of works produced during the four-year period of the Visual Arts course, including a reflection about the creation process and all that surrounds it – influences, memories, visions etc. – to finally establish a connection between all these elements in order to make clear this incredible web of creation. This work is inserted in the line of research “Artistic Processes and Procedures” of the Department of Fine Arts of the Art Institute of UNESP and describes: creative process, production and influences. The methodology used was Freinetiana Educational Cybernetics, developed in the research group “Art media and Videoclip”, whose leading advisor is the one from this Final Paper. The result and discussion of the artistic-scientific research were reported in monography in the following versions: PDF File repository for dissemination in the virtual library of the Institute of Arts; hardcover version for physical collection in the Library of the Institute of Arts; paper version for the committee; template version appropriate for submission to International Scientific Congress in the area of Arts