Desempenho físico-mecânico de painéis LVL de pinus tropicais da região de São Paulo

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Processamento de imagens digitais para detecção e quantificação de defeitos na madeira serrada de coníferas de reflorestamento de uso não estrutural

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Modelo dinâmico da coluna lombar humana, com solicitação de esforço postero-anterior: análise com rigidez viscoelástica não linear

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Plantas hortícolas dos quintais e sua importância para as famílias do assentamento Pirituba II , Itapeva/Itaberá,SP

Pós-graduação em Agronomia (Horticultura) - FCA

Simulação numérica do processo de secagem de madeiras

Pós-graduação em Engenharia Mecânica - FEG

Aproveitamento de resíduos de laminação da madeira para a produção de painel estrutural

Products derived from wood or engineered products are becoming interesting alternatives to the replacement of solid wood in various applications, from structural components to the furniture industry and packaging. Among these products, there are panels built by strands, particles and fibers, each one having their particular characteristics and potential of use. Since the different types of panels are produced, waste generation is part of the process, and that more technological it is, it still generates losses of raw materials. Based on the need for rational use of raw materials and using almost full of industrially processed wood, It arises the proposal of this work, which seeks to use waste from the lamination, like pieces of strands, broken strands, strands rough, cracked strands to produce panels with structural characteristics of the OSL panel (Oriented Strand Lumber), LSL (Laminated Strand Lumber) and OSB (Oriented Strand Lumber). Besides the use of waste, this paper seeks an alternative to the use of the adhesive, because the industry uses formaldehyde-based adhesives, which over the press, they emit large amounts of formaldehyde, which is very aggressive to humans and environment. The panels made with polyurethane resin based on castor oil and hot-pressed were characterized by physical and mechanical tests according to specifications of European Standard (EN). High values of tensile strength, elastic modulus and density were found in the results of tests. Adding to stable values of swelling and moisture content, the panel studied adds attractive features to the panel market, especially in the civil construction

Considerações gerais sobre a aplicação de esterco no processo de compostagem dos resíduos de poda e capina

In the category of the solid waste, are included the yard solid waste, this kind of solid waste are noble raw material and uncontaminated being recycled through the composting processing. Inside this context, it was studied the influence of horse manure in yard solid waste composting process, analyze the viability to compost the yard solid waste in UNESP Bela Vista. It was made four piles of composting, two of them are composed only by yard solid waste and the others are composed by horse manure and yard solid waste. The experiments were operated during 45 days. The evaluation of the process was made through temperature measurements of the piles daily during the test period. On the contrary of the piles with horse manure, the piles with no horse manure didn’t undergo complete maturation in the end of the experiment. Through the results obtained concluded that it was important to use manure horse in yard solid waste composting process to accelerate this process, because the piles without horse manure didn’t reach temperatures that characterize the composting process.

Proposta de conector para ensaios de ligações CDE submetidas à tração perpendicular as fibras em madeira de pinus

The growth of urban population associated with the shortage of supply of public infrastructure such as hospitals, kindergartens, schools, among others, has reinforced the need to develop alternative methods that simplify the construction processes and allows for a reduction in these costs works. The conventional processes have increasingly been shown ineffective to solve the problem of demand for different types of urban and rural buildings. Given this fact, industrial construction processes can gain space and have proven to be highly interesting to solve the above problems, in particular, considering the cost-effective and time. Therefore, this study aimed to determine the influence of moisture on the strength of metal plate connections connectors (printed plate with teeth). For the sizing of the links between structural lumber using metal connectors with teeth prints; controlled process variables (drying of the wood and the different moisture contents), and finally found results and compare them with different literatures order to obtain a qualitative efficiency of the process. Some specimens had very low expectations, can be explained by the presence of bone marrow, and pre-existing cracks. Thus, the results were discarded for further analysis and more accurate results

O que acontece durante o recreio em duas escolas da cidade de Jaú com crianças do 2º e 3º ano do ensino fundamental

This work had how I aim to notice what it happens in the recreation of two schools of basic teaching I, more precisely with children of the 2nd and 3rd year, analysing what they do and since they play. The interest in observing this moment is the fact of, at present, the children they have not many places to play, principally due to the violence and gradually places with structure for the same thing; the streets are already not any more places where the child can play the friends calmly, interact with other, his turn discovers the world and principally to enjoy itself. With these facts the school becomes the most appropriate place so that the child can play and interact with other children and at the same time to be protected leaving so the most carefree parents. The school becomes the great back yard in the life of the child, when several activities are happening there more and in this way developing not only the communication, the spirit of collaboration and of companionship, the co-ordination motora in general and the autonomy. Therefore the recreation makes an important time into the school life, moment in which the child can practise the universal right that is secured of playing

Etnobotânica e práticas agroecológicas na comunidade rural Rio dos Couros, Cuiabá, MT, Brasil

Pós-graduação em Agronomia (Horticultura) - FCA

Ser ou não ser (de santo)?: aspectos do campo religioso afro-brasileiro na peça teatral Balbina de Iansã, de Plínio Marcos

To be or not to be (of candomblé)? – aspects of Afro-Brazilian religious field in the theater play Balbina de Iansã, by Plínio Marcos. In 1970, the playwright born in Santos-SP Plínio Marcos writes and directs the spectacle Balbina de Iansã, an adaptation (in form of a musical) from Romeo and Juliet, by Shakespeare. The action happens in a candomblé yard, managed authoritatively by a Mãe-de Santo, who tries to prevent the young protagonist couple’s love. This study analyzes the representation of some rites and principles of Afro-Brazilian religion in the play, especially concerning the critique of the relations of power that exist in the yards of São Paulo.

Plantas utilizadas para tratamento da malária e males associados em comunidades indígenas no rio Uapés em São Gabriel da Cachoeira - AM

Pós-graduação em Agronomia (Horticultura) - FCA

Ensaios não-destrutivos de propagação de ondas em toras e madeira serrada de Pinus. taeda L.

In this paper it was evaluated the influence of the relative position of logs on the trees, the type of wood (juvenile and mature wood and pith) and the dimension of sawed wood elements on the velocity of propagation of stress waves into the material on condition. P. taeda L wood (43 years old trees) from Horto Florestal of Manduri (latitude 230 00’ south, longitude 400 19’ west and altitude de 700 m) São Paulo State, Brazil were used, considering its easy growth rings visualization and the better ju regions definition. Six trees were randomly chosen in the plantation. Trees were sawed into 4 logs (2,5 m long each. In each log it was delimited the central board (80mm tick) region and the lateral boards (25mm tick) regions, cons right hand. It were evaluated relation between velocity of stress waves on logs and the correspondent lumber (central and lateral boards), on green condition, on the three main region of the elements (mature wood results obtained revealed the concordance between velocities of stress waves in the material before and after the its mechanical processing. It was also revealed statistical differences between the velocity of stress waves at juvenile wood, mature wood and pith regions. Keywords: stress wave method, velocity 17 destrutivos de propagação da propagação de ondas de tensão em toras e madeira serrada de taeda L. Hernando Alfonso Lara Palma - Universidade Estadual Paulista Faculdade de Ciências Agronômicas – FCA/UNESP – Botucatu - SP, e-mail: awballarin@fca.unesp.br Luiz Antonio Vasques Hellmeister - Universidade Estadual Paulista - Faculdade de Arquitetura, FAAC/UNESP – Bauru - SP, e-mail: hellmeister@faac.unesp.br Este trabalho teve como objetivo analisar a influência do tipo de lenho, da posição da tora ao longo do fuste e das dimensões das peças desdobradas, na velocidade de as de tensão (Stress wave method), na condição de madeira verde. P. taeda L., originária de árvores de plantio do Horto Florestal de SP., com idade aproximada de 43 anos, pela facilidade de identificação dos anéis imento e demarcação das regiões de madeira adulta e madeira juvenil. Foram amostradas 6 árvores distintas, escolhidas ao acaso do talhão selecionado. De cada árvore foram retiradas 4 toras com comprimento de 2,5 m cada. Foram demarcadas nas toras a ha central (8 cm de espessura) e 4 tábuas laterais (espessura comercial de 2,5 cm), sendo duas à esquerda e duas à direita da prancha central. Foram avaliadas as relações existentes entre as velocidades de propagação das ondas de tensão na madeira íntegra (toras) e desdobrada (pranchas e tábuas), na condição de madeira verde, nas três regiões distintas do lenho: medula, madeira adulta e madeira juvenil. A análise comparativa dos resultados revelou a concordância entre as velocidades antes e após o desdobr madeira. Houve diferenciação estatisticamente significativa entre as velocidades de propagação das ondas de tensão nos lenhos adulto, juvenil e na medula. -destrutivos, método das ondas de tensão, Pinus taeda stress wave tests on green logs and lumber of Pinus taeda In this paper it was evaluated the influence of the relative position of logs on the trees, the type of wood (juvenile and mature wood and pith) and the dimension of sawed wood elements on the velocity of propagation of stress waves into the material on L wood (43 years old trees) from Horto Florestal of Manduri (latitude 19’ west and altitude de 700 m) São Paulo State, Brazil were used, considering its easy growth rings visualization and the better juvenile and mature wood regions definition. Six trees were randomly chosen in the plantation. Trees were sawed into 4 logs (2,5 m long each. In each log it was delimited the central board (80mm tick) region and the lateral boards (25mm tick) regions, considering 2 boards on the left and 2 at the right hand. It were evaluated relation between velocity of stress waves on logs and the correspondent lumber (central and lateral boards), on green condition, on the three main region of the elements (mature wood, juvenile wood and pith). Comparative analyses of results obtained revealed the concordance between velocities of stress waves in the material before and after the its mechanical processing. It was also revealed statistical differences ty of stress waves at juvenile wood, mature wood and pith regions

Qualidade do óleo bruto de grãos de crambe (Crambe abyssinica Hochst) sob diferentes métodos de secagem

The Culture of crambe became promising since its grains presents high oil content. The methods of drying may influence the quality of crude oil extracted from the beans, depending on the way it is managed. This study goal was to evaluate the influence of different drying methods on the quality of the crude oil extracted from crambe grain. The experimental design was completely randomized with five treatments (drying with heated air, natural air, yard, shade, and at the field), and with four tests for each. In order to check the quality of the grains, we performed an analysis of fat acidity, and to evaluate the crude oil quality, we conducted analysis of iodine value, acid value, water content, density at 20ºC, and a kinematic viscosity at 40°. After obtaining the data, the results were submitted to analysis of variance. When significant means were detected, they were compared by t-test (p ≤ 0.05). The method of drying with heated air provided a lower rate of fatty acid in grains. The drying methods evaluated did not compromise the quality of the oil extracted from the crambe grain.

Alterações na composição química e sensorial de café (Coffea arabica L.) nos processos pós-colheita

An interdisciplinary study was conducted to evaluate the effects of drying and storage time on changes in the quality of natural and fully washed coffees beans dried out in the yard and mechanically dried at a temperature of 60/40°C in air dryer machine. The coffee beans (Coffea arabica L.) harvested in cherries were processed by dry and wet methods, being subjected to pre-drying yard, followed by drying yard in the sun with air heated of 60/40°C until it reached the water content of 11% (wb). After reached the thermal equilibrium with the environment, the beans were packed in jute bag with a capacity of five kilograms and stored in uncontrolled environment during the period of one year, and removing material from each treatment every three months. To characterize the effect of drying and storage time on the coffee quality different methodologies was evaluated. It was observed less drying time for the fully washed coffee 60/40°C, and thus less energy consumed in the drying process until the point of storage, for the natural coffee there was significant effect of time on the chemical quality, biochemical and sensory; fully washed coffee proved to be more tolerant to drying than natural coffee, regardless of drying method, showing a better drink quality and less variation in chemical composition and biochemistry.