Uso da avalia����o do ciclo de vida para a determina����o na redu����o de emiss��es de gases do efeito estufa e do consumo de energia associados a reciclagem de EPS

P��s-gradua����o em Engenharia Mec��nica - FEG

Quantifica����o eletroqu��mica de analitos de interesse ambiental e biol��gico, empregando novos materiais preparados a partir de silsesquioxanos funcionalizados

P��s-gradua����o em Ci��ncia dos Materiais - FEIS

Estudo de propriedades da resina acr��lica termoativada por energia de micro-ondas frente ��s varia����es nos procedimentos de inclus��o

On heat cured acrylic resins by microwaves energy the action of electromagnetic waves on methylmethacrylate promote the polymerization process. However, part of this energy is absorbed by the gypsum present in the flask and the function of this gypsum is to maintain the characteristics of specimen, nevertheless is unknown in the literature as the amount of water present in this gypsum affects the characteristics of acrylic resin. The proposal of this study was verified if dried gypsum influenced in some properties of the acrylic resins thermally activated by microwaves: presence of porosity, microhardness, roughness, flexural strength and dimensional change. Two different types of acrylic resin for complete denture were utilized: Lucitone 550 e Vipi-Wave and groups were formed: Lucitone 550, polymerization by microwave energy without gypsum treatment; Lucitone 550, polymerization by microwave energy with pretreatment gypsum; Vipi-Wave by microwave energy without gypsum treatment; Vipi Wave, polymerization by microwave energy with pretreatment gypsum; Lucitone 550 control group polymerization in hot water bath. For both situations were performed analysis of microhardness and porosity three different metallic shaped specimens were formed with followed dimensions: 2,0x2,0x2,0cm (8cm3); 2,0x2,0x1,0 (4cm3) e 2,0x2,0x0,5 (2cm3). Standardized wax specimens was used to prepare groups (n=9) and included in glass fiber flasks. The gypsum dry was made by microwave oven cycle (10min and 600W) and then the flasks were maintained in dry oven during two hours. Polymerizations of specimens were made and then polished. Wax patterns #7 obtained from the metal were embedded in plastic flask and following the processes of pressing and polymerization of the resin according to established groups. To evaluate the flexural strength, specimens 65mm x 10mm x 3.0mm from metallic patterns in bar format were made. ...

Construção de instrumentos t��cnicos de astronomia para a divulga����o cient��fica: telesc��pio fotom��trico de grande abertura e baixo custo

Although the popularization of astronomy in the last decade and the International Year of Astronomy, celebrated in 2009, there's a great lack in respect of quality instruments for astronomical disclosure. Thinking in this research about it, we intend to recuperate and elucidate a technique long forgotten: the metal mirror amateur telescope, once was done in the first reflecting telescopes. However, with the resources available today and given the high purity of the materials, our results were better than that obtained by the pioneers. We developed and built a large aperture telescope (250 mm diameter) and very bright (focal ratio = 4.0), versatile and portable. In our study was described step by step the process to fabricate the telescope. Through its first images captured of the Moon, we can illustrate its versatility both for use in outreach events and for use in amateur astronomy, because it is a primary focus capture system and can run registration of various astronomical events

Sistema de gera����o e armazenamento de energia el��trica utilizando transdutor piezel��trico na forma pulsada

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Proposta de adequa����o �� construção sustent��vel: tecnologias e alternativas para institui����es de ensino

Due to the huge impact negative on the environmental caused by the civil construction, the university plays a majorital role in the proposal of studies and projects that aim the sustainable building. Nowadays, it has been noted the great demand for projects which contain a systemic focus in the tripod of the sustainable development, that is to say, more and more the consumers are demanding that the final result of a project contemplate the social, economic and environmental areas. According to the National Industry Confederation (CNI) and the Brazilian Chamber of the Industry and the Construction (CBIS), the goal for 2020 is that the constructions have an environmental performance 20% higher in comparison to the actual one, starting with an index defined by many indicators, such as: water consumption, energy, residues generation and social-environmental performance of the bought products. In this case, the theme of the project comes around the adequation of scholar institutions to the sustainable construction through simple changes of tecnologies and habits aiming the growth of the environmental eficiency of the enterprise and, consequently, the improve of sustainable practices inside the institution. Once the change is proposed, it will be furnished datas liable of reproduction for the adequation of others scholar institutions, according to it's necessity or interest. After the realization of the studies, it was possible to notice that the environmental performance of a scholar institution can be improved through the implantation of tecnologies of fast return in the investment, such as: flow reducers, rain water reuse system, green roof, retrofit of lamps and execution of a photovoltaic system. Besides the fast return of investment, the monthly economy of the applied tecnologies combined can reach 75% when compared to the actual spending with water and electric energy

Construção e avalia����o t��rmica de um sistema concentrador parab��lico com seguidor solar

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Propriedades el��tricas de materiais h��bridos de S��lica/org��nico �� base de GPTS/TEOS preparados pelo m��todo sol-gel

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Uso de experimentos, confeccionados com materiais alternativos, no processo de ensino e aprendizagem de F��sica: Lei de Hooke

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

O papel dos consumidores residencias no ambiente das redes inteligentes: medidores eletr��nicos de energia

P��s-gradua����o em Engenharia Mec��nica - FEG

Construção e calibra����o de um inclin��metro para uso em tratores agr��colas como instrumento de seguran��a

The tractors are the main potency source, for the traction of tillage equipments and their use are increasing more and more in Brazilian agriculture. In spite of the great technological progress the increase of the number of agricultural tractors brought positive aspects and some negative, among these last ones it stands out the appearance of a new source of work accidents, which importance is given by the physical damages caused to the operator. Therefore the objective of this work was to project and develop an inclinometer, which indicates the inclination of the land, as safety sensor for agricultural tractors to avoid lateral hollovers, through a resonant sign, for the operator and the machine preservation. The built and evaluated inclinometer showed to be efficient for inclination indication of different areas during field operations with agricultural tractors, small angle oscillation and enough answer time to help operators to take decisions in imminence situation of lateral machine hollovers.

O efeito da ordena����o e estrutura geom��trica dos materiais PtSn/C e PdSn/C na eletrooxida����o do glicerol em meio alcalino

Conselho Nacional de Desenvolvimento Cient��fico e Tecnol��gico (CNPq)

A construção dos processos de sistematiza����o em processos aritm��ticos da EJA: um estudo

A proposta deste estudo teve in��cio a partir das dificuldades apresentadas na formaliza����o e sistematiza����o dos c��lculos matem��ticos, por um grupo de alunas da Educa����o de Jovens e Adultos, em uma Escola Municipal de Rio Claro- SP. A pesquisa, que ora proponho, visa entender a import��ncia das experi��ncias e vivencias trazidas por pessoas com baixa ou nenhuma escolaridade, para entendermos o porqu�� de fazerem c��lculos mentais matem��ticos com alguma facilidade e encontrarem grandes dificuldades na sistematiza����o/ formaliza����o desses c��lculos e como os jogos l��dicos matem��ticos podem ser considerados fundamentais nesse processo de formaliza����o das contas. Essa dificuldade, muitas vezes, repercute em entraves na escolariza����o regular dessas pessoas. Para pensar nessa problem��tica inicialmente elegemos como referenciais e materiais te��ricos autores como Danyluk, Freire, Fonseca, Vigotsky, entre outros; s��o estudiosos que v��m contribuindo para a compreens��o dos referidos processos e da linguagem matem��tica. No que concerne ��s experi��ncias, buscaremos aportes em Larrosa. Em continuidade, ser�� organizado um estudo baseado em registros, documentos e relatos de um acompanhamento da estagi��ria de aulas de matem��tica em uma sala de EJA, do Programa Institucional de Inicia����o a Doc��ncia- PIBID que vem acontecendo na cidade de Rio Claro- SP, desde o ano de 2010. Os procedimentos de an��lise nortear-se-��o, al��m dos autores citados acima, pela an��lise do material gerado por meio dos registros, obtidos em sala de aula, pautando-nos pelas categorias de codifica����o (BOGDAN & BIKLEN). Entendemos que levantar elementos e analisar essas dificuldades podem contribuir para a compreens��o do processo de construção da cultura e linguagem matem��tica, por essas pessoas, podendo assim contribuir para um novo olhar sobre a educa����o matem��tica nesse segmento da educa����o

Protocolo para sinteriza����o de zirc��nia odontol��gica por energia de micro-ondas

Coordena����o de Aperfei��oamento de Pessoal de N��vel Superior (CAPES)

Construção de ��ndice percentual de ���status��� de desenvolvimento sus-tent��vel de assentamentos rurais utilizando procedimento estat��sti-co multivariado

The objective of the present work is the construction of percentual indexes of sustainable development "Status" - PIDSD (%) aiming to order and classify the rural settlements, considering agricultural, socioeconomic and environmental aspects, in order to diagnose their sustainable reality. This way, we considered multivariate statistical procedure to establish analytical descriptors - indexes - like the principal components technique (CP). The CP technique was used in a matrix formed by 47 variables observed in 50 rural settlements, distributed in seven different regions of the state of Mato Grosso, obtained from diagnostics, provided by "Mato-Grossense" Enterprise of Research, Assistance and Rural Extension S/A - EMPAER - MT, in order to obtain the indexes used in the construction of PIDSD (%). The settlements with higher PIDSD (%) were considered "higher potential" or "higher sustainable" in relation to the analyzed variables, making the establishment of assistance strategies and cooperation possible, allowing the government and civil society in general, to improve those with worse results ("lower potential" or "lower sustainable"), and search for ways to strengthen and multiply the results of the "higher potential" settlements. Vale do Seringal settlement had the best conditions in relation to the variables, mainly those of higher weigh and was considered the one with "higher potential". S��o Sebasti��o had the worst conditions and was considered "lower potential".