Thickness and marking quality of different occlusal contact registration strips

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

Influência de protetores físicos coloridos nas trocas gasosas de Canafístula (Peltophorum dubium (Spreng.) Taub.)

The aim of this experiment was to study the influence of transparent, blue and red tree shelters on gas exchanges of canafístula’s (Peltophorum dubium (Spreng.) Taub.) seedlings. This study was carried out in Department of Botany, Institute of Biosciences, U ESP, Botucatu, São Paulo State, Brazil. The experiment design was randomized blocks, with 5 replications, each one containing 6 units of each treatment (nonsheltered, transparent tree shelters, blue tree shelters and red tree shelters). The evaluations of gas exchanges were made through an infrared gas analyzer. It follows that the tree shelters use may limit the photosynthesis, increase the transpiration and stomatal opening, besides reducing the water use efficiency. The colored tree shelters use created unfavorable conditions for the development, reducing the photosynthesis, because they reflected the blue and red wavelengths, allowing only the passage of the other components of the white light or of the photosynthetically active radiation

Desenvolvimento de nanopartículas de quitosana para adminstração nasal de zidovudina

Zidovudine (AZT) is the drug most commonly used in AIDS treatment, isolated or in combination with other antiretroviral agents, but it has certain limitations due to its therapeutic dose-dependent haematological toxicity. In addition, it has low oral bioavailability, since it undergoes pre-systemic metabolism. The nasal route has been used as an alternative route for drug administration, because it can promote its direct absorption to blood circulation, avoiding hepatic metabolism. However, this route presents as a factor limiting the mucociliary clearance mechanisms that remove quickly the formulation of the nasal cavity. To prolong the residence time of formulations, in this direction, has been proposed the development of mucoadhesive systems. Among the various existing systems, the use of chitosan (QS), as mucoadhesive polymer, has been widely exploited in the preparation of nanoparticles (NPs). The objective of this study was to develop and characterize QS’s NPs for intranasal administration of AZT. For both NPs have been developed by ionic crosslinking of QS with sodium tripolyphosphate (TPP). These NPs were characterized by studies of particle size distribution, zeta potential, morphology, mucoadhesion tests, assessing the ability of encapsulation of the drug and permeation profile of AZT. The evaluation of AZT in the NPs was determined by UV-Vis spectroscopy. Mucoadhesion measures were made using a texture analyzer, using a mucin disk and porcine mucous membrane , and permeation assay were conducted using porcine nasal mucous membrane adapted to the Franz cell. These results suggest that the systems in hand have great potential for nasal AZT administration

Eficiência energética em uma indústria madeireira

In wood processing industries, which use electrical equipment in the production process, in most cases these are badly scaled or operate under inadequate conditions, resulting directly in industrial energy efficiency, which proves important because besides having technological innovation, also with practices and policies, aims to decrease power consumption. So in a wiring project should take into account the variables that influence energy efficiency. Thus this work has been reviewed and subsequently calculated some of these variables, such as active power, power factor and demand for the entire industry (global) and also for specific equipment, the chipper. The network analysis was performed in a wood processing industry in the city of Taquarivaí - SP, and evaluated these variables with a network analyzer and also by analysis on energy bills, which were found in both analysis levels below those found in literature. These factors are due to poor design, improper use, storage of equipment or even by characteristic of the production process, ie, the equipment running on empty because of the volatility of production

Análise da deposição de filmes finos semicondutores de GaN e GaN e Ga1-xMnxN preparados por sputtering reativo

Thin films of Ga1-xMnxN have great interest in its potential for control of electron spin (spintronics), in most cases this material is synthesized by techniques that have a high degree of control the deposition parameters, such as molecular beam epitaxy (MBE) and deposition of metalorganic chemical vapor deposition (MOCVD). The sputtering technique is an alternative route to produce such materials. Here we study the film deposition Ga1-xMnxN by reactive sputtering technique and apply enhancements such as a glove box, a residual gas analyzer and temperature control system, in order to growth films epitaxially using an analysis of the preconditions of films analyzed by spectroscopic techniques and microscopic. These procedures helped to improve the technique of deposition by cleaning substrates in an inert environment, and by the analysis of trace gases and heating the substrate holder as explained in the literature. Through the applications and comparisons it can be pointed out that the technique has the advantage of its simplicity and relatively low cost compared to MBE and MOCVD, but produces polycrystalline material

Sequenciamento de um fragmento de DNA mitocondrial de Camponotus textor (Forel, 1899) (Hymenoptera, Formicidae)

A grande diversidade das formigas implica na enorme variedade de hábitats de nidificação, preferências alimentares e comportamento social com divisão de trabalho, além da estruturação de seu ninho que por sua vez, podem revelar parte de sua história evolutiva. Camponotus textor é uma espécie tecelã, a qual constrói seu ninho a partir da seda produzida pelas suas próprias larvas, garantindo um dos mais notáveis exemplos de cooperação social. É uma formiga arborícola e de grande importância para a agricultura, já que pode nidificar no cafeeiro (Coffea arabica) e ser usada como agente de controle biológico impedindo o estabelecimento de outras pragas. Atualmente, existem poucos estudos abordando comportamento, fisiologia, genética, endossimbiontes e filogenia desse grupo. Segundo dados da literatura, o DNA mitocondrial tem sido utilizado em análises de filogenia devido ao ótimo número de cópias por célula, altas taxas mutacionais e pouca ou nenhuma recombinação. Sendo assim, o presente trabalho visa realizar o sequenciamento de um fragmento do DNA mitocondrial de populações distintas de Camponotus textor para ser utilizado como marcador molecular, tornandose uma ferramenta para diferenciação de populações e determinação das relações filogenéticas entre outras espécies de formigas relacionadas. Foi feita a extração do DNA em TNES (Tris, NaCl, EDTA, SDS), seguida da amplificação da região COI (citocromo oxidase I) do DNA mitocondrial utilizando-se os primers elaborados para este trabalho e o sequencimento foi realizado no 3130 Genetic Analyzer (Applied Biosystems). As seqüências obtidas foram editadas no BioEdit, e posteriormente comparadas com o banco de dados GenBank, utilizando-se a ferramenta BLAST, e assim a construção da análise filogenética através do programa MEGA. Foi possível a separação das cinco populações em duas linhagens distantes geograficamente

Influência do uso de malhas de sombreamento azul, vermelha e preta no desenvolvimento inicial do pepino Taiko

Cucumber (Cucumis sativus L.) is a plant of the Cucurbitaceae family of great commercial importance and their culture is widespread throughout the country. The production of vegetables, high-quality care begins with training ranging from seedlings and shading techniques have an important role in creating environments more conducive to the production of seedlings and many researchers and producers of seedlings have opted for the use of color shading screens, making this way, the wavelength and the amount of incident energy are changed in favor of the plants. Work will be performed at the Department of Forest Sciences, Faculty of Agricultural Sciences, Universidade Estadual Paulista (UNESP), Botucatu campus. The statistical design will be in three blocks, each containing 100 plots of each treatment (seedlings covered with blue screen, red and black). Evaluations of dry mass and height will be made at 7, 14, 21 and 28 days after emergence, and 5 will be selected seedlings of each treatment. At 14 and 28 DAE was measured, and SPAD chlorophyll content at 30 DAE, was evaluated by measuring gas exchange in the second pair of leaves, fully expanded for each plant, which was put in a chamber controlled with infrared gas analyzer (IRGA LI 6400, Licor) to perform measurements of photosynthesis. Treatment with black shading showed statistically better results for total dry matter, plant height, SPAD chlorophyll content and net assimilation of CO2, showing a better quality seedlings and its use is recommended in the cultivation of cucumber Taiko

Poluição atmosférica e paisagem urbana no município de São Paulo

This paper proposes an analysis of two major polluting elements of the atmosphere of São Paulo city, carbon monoxide (CO) and sulfur dioxide (SO2). This study was performed through analysis of data on the quality of air, by means of published reports and records obtained by experiment using measuring rate monitor for CO2. Atmospheric data were collected and sorted. From this work it was possible to identify the concentration of carbon dioxide in the center of São Paulo on September 14, 2012 using the infrared gas analyzer (IRGA). From the ratios of carbon monoxide and sulfur dioxide spatially analyzed could identify major emitters by comparing records of pollutants and their origin. The analysis makes it possible to map the intensity of air pollution in urban areas, identifying the polluting elements, their issuers and thereby contributes to the current understanding of atmospheric features, bringing a geographical spatial analysis of air pollutants in São Paulo, contributing to awareness of vulnerabilities, enabling a useful tool for planning and maintenance of the urban environment related public policies

Atividade enzimática no solo e dinâmica de carbono e nitrogênio em pastos de capim-tanzânia sob índices de área foliar residual

Pós-graduação em Zootecnia - FCAV

Identificação, caracterização e avaliação da patogenicidade de diferentes isolados de fusarium spp. para o controle de thaumastocoris peregrinus (hemiptera: thaumastocoridae)

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

Estudo comparativo das madeiras de cecropia palmata (imbaúba) e eucalyptus grandis para produção de celulose e papel

Pós-graduação em Ciência Florestal - FCA

Physical-chemical characterization of biomass samples for application iin pyrolysis process

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Procedência da cocaína e maconha definida por isótopos estáveis

Objectives: the aim of this work was to define the range of possible values for each isotope of carbon-13 and nitrogen-15 for cocaine and marijuana seized in Botucatu-SP, with the intention of distinguishing the geographical origin of the drug. Materials and Methods: samples of marijuana and cocaine were collected at the time of incineration. Then, at the Stable Isotope Center from São Paulo State University in Botucatu, São Paulo, Brazil, samples of marijuana were subjected to the drying process and subsequent grinding. Samples of cocaine were not submitted to the processes of drying and grinding because they were already in adequate granulometry. Subsequently, the samples of both drugs were weighed in accordance with the standards for carbon-13 and nitrogen-15. Lastly, CO2 and N2 gases were obtained from the samples through the elemental analyzer. They were then analyzed in a mass spectrometer to obtain values of δ13C and δ15N in ‰. Results and Discussion: the results of marijuana allowed for comparison with regions of Queensland, Australia, according to the range of δ13C between -29.9 ‰ and -29.3 ‰ and δ15N range from 4.1 ‰ to 5.8 ‰. The results were also consistent with those of the state of Pará, Brazil, where the values of δ13C and δ15N were -30.3 ± 0.7 ‰ and 5.0 ± 1.3 ‰, respectively. Also the results were in accordance with those from the state of Mato Grosso do Sul, Brazil, in which δ13C values varied by -28.7 ± 1.3 ‰, and δ15N values varied by 6.6 ± 1.1 ‰, respectively. In both regions, the samples identified as being from Pará and Mato Grosso do Sul showed an overlap. In addition, the results fitted with data from the state of Maranhão, in which the values of δ13C and δ15 N were -28.8 ± 1.6 ‰ and 2.9 ± 2.5 ‰, respectively. In the case of cocaine, the present study could not be related to the results from the literature. One possible explanation may be related to the non-purification of ...

Erosive potencial of energy drinks on the dentine surface

Coordenação de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)

Obtenção e caracterização de nanopartículas lipídicas sólidas como sistema de transporte para ibuprofeno

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)