O caso dos quatro quatros como uma possibilidade pedagógica para o desenvolvimento de competências e habilidades matemáticas

The teaching and learning of mathematics through alternative methods make Mathematics more enjoyable, accessible and meaningful. Through teaching resource storytelling the student becomes the protagonist of the construction of their knowledge. With the use of books and writings of Malba Tahan is possible to work with mathematics, as a curriculum component, fostering the development of skills and Mathematics skills in students. Thus, this study aims to understand which skills and Mathematics skills can be developed with the storytelling of The Case of the Four Fours in Basic Education. Through the telling of this story, students develop the skills related to the block / shaft Numbers and Operations, present in official documents, and other skills and mathematics skills

Diversidade bacteriana em solos, vinhaça e semicompostagem relacionados ao cultivo de cana-de-açúcar

Pós-graduação em Microbiologia Agropecuária - FCAV

Surface roughness analysis of dental ceramics treated with hydrofl uoric acid and aluminum oxide jet

The aim of this study was to evaluate the surface roughness of 5 indirect restorative materials treated with hydrofluoric acid to 10%, with aluminum oxide jet and a combination of both. The specimens was prepared with 10 mm in diameter and 2 mm thickness, divided into fi ve groups: (1) Ceromer (CeseadII-Kuraray), (2) Leucite crystals ceramics (IPS EmpressIIIvoclarforcasket), (3) glass ceramic with fluorapatite (IPS D. Sign-Ivoclar), (4) lithium disilicate ceramic (IPS Empress II-Ivoclar restorations), (5) ceramics (Cergogold-Degussa). For all groups were performed the controls, and the surfaces with the 3 types of treatment. For testing roughness used the rugosimeter Taylor/Hobson-Precision, model form tracerSV-C525 high sensitivity. After confi rmation of variance analysis with a signifi cance level of 1% (p < 0.01), there was equality between the average roughness of materials from groups 1, 3 and 5, and the group 2 was different from the others. It was also found that the ceramics of the group 5 behaved similar to group 4. However the lowest average roughness was observed in group 2 ceramic. In the evaluation between the types of treatment, the aluminum oxide jet and associations and blasting with hydrofl uoric acid were similar, and different isolated hydrofl uoric acid, and 3 types of treatment signifi cantly higher than the control group. All treatments promoted superfi cial alterations in all tested materials.

Divergência interpopulacional e interespecífica e processo seletivo atuante nos genes ortólogos a fruitless e Odysseus em Drosophila mojavensis e D. arizonae

Pós-graduação em Biologia Animal - IBILCE

One-step glycerol oxidehydration to acrylic acid on multifunctional zeolite catalysts

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Distribution, management and diversity of the endangered Amerindian yam (Dioscorea trifida L.)

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

Correlation between structural and catalytic properties of copper supported on porous alumina for the ethanol dehydrogenation reaction

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Chemical and rheological properties of exopolysaccharides produced by four isolates of rhizobia

The rheological, physicochemical properties, emulsification and stability of exopolysaccharides (EPSs) from four rhizobia isolates (LBMP-C01, LBMP-C02, LBMP-C03 and LBMP-C04) were studied. The EPS yields of isolates under these experimental conditions were in the range of 1.5-6.63gL(-1). The LBMP-C04 isolate, which presented the highest EPS production (6.63gL(-1)), was isolated from Arachis pintoi and was identified as a Rhizobium sp. strain that could be explored as a possible potential source for the production of extracellular heteropolysaccharides. All polymers showed a pseudoplastic non-Newtonian fluid behavior or shear thinning property in aqueous solutions. Among the four EPS tested against hydrocarbons, EPS LBMP-C01 was found to be more effective against hexane, olive and soybean oils (89.94%, 82.75% and 81.15%, respectively). Importantly, we found that changes in pH (2-11) and salinity (0-30%) influenced the emulsification of diesel oil by the EPSs. EPSLBMP-C04 presented optimal emulsification capacity at pH 10 (E24=53%) and 30% salinity (E24=27%). These findings contribute to the understanding of the influence of the chemical composition, physical properties and biotechnology applications of rhizobial EPS solutions their bioemulsifying properties.

Análise dos parâmetros antropométricos da cabeça dos militares da força aérea brasileira no projeto de capacetes balísticos

The study of the physical man characteristics and their variations have caught the man's interests since the ancient age. In Brazil, there are no studies which define the anthropometric profile of the Brazilian's head, hindering the development of ergonomic designs. One problem that occurs in the Brazilian armed forces is the use of protective helmets made with measurements of other countries, which causes great discomfort. Thus, this study aims to conduct a study to determine the anthropometric measurements of the head of the Brazilian Air Force military, assisting in the production of helmets more suitable. Therefore, it is presented ananthropometric survey in 576 students of the School of Aeronautics Expert, 286 females and 290 males, aged between 17 and 36 years. The study showed that the differences found between genders are less than 5%. In addition to the fact that the helmet Tues adjustments, there is no need for production of different helmets in relation to gender, but some changes are necessary measures in circumference and shape of the helmet.

O monitoramento climático e o alerta de desastres naturais na era da comunicação digital

This article presents considerations concerning the interaction between communication and digital platforms and applications developed to perform computerized climate monitoring and issue alerts about natural disasters. From work in the Center for Integrated Natural Disaster Alert (CIADEN), which processes meteorological data provided by Platform Monitoring, Analysis and Warning TerraMA2 designed by the National Institute for Space Research (INPE) to conduct monitoring and fi ring warning about climate risk environment, we propose the expansion of interactivity with the various possibilities of digital communication available today for signifi cant portion of society. On another front, the CIADEN has articulated teaching and research on climate monitoring and warning of natural disasters, weather, and geoprocessing environment, involving teachers and students both in school and in higher and technical.

A produção técnico-científica de James Precott Joule: uma leitura a partir da epistemologia de Ludwig Fleck

This paper aims an epistemologically analysis of the attempt of James Prescott Joule to replace the steam engine by the electric one. In this historical analysis, we use the epistemological categories: style of thinking, collective thinking, intercollective circulation of ideas and practices,Joule and other technicians in Machester received in that time financial incentives from governments and industry to replace the steam engine by the electric one, since it was in Manchester a culture of the technique of the accuracy and precision in which Joule was immersed, which allowed us to initially identify the styles of techniques thinking and experimental efficiency. However, Joule could not replace the steam engine by the electric; and the awareness of the problems faced by him, in the attempt to make such a substitution, led him to seek, through an intercollective circulation of ideas and practices, such as the studies of Faraday and Jacobi, a change of direction in his researches. According to our analysis, what happened was a change of style from a technical to a scientific thinking. In this sense, Joule began to investigate issues of a scientific nature, as the Joule’s effect and the mechanical equivalent of heat, which contributed significantly to the establishment of the principle of conservation of energy. We present here the contributions of this epistemological analysis to the discussion of questions of the nature of science in the basic education and for the training of physics teachers.

Crescimento da firma, diversificação e internacionalização: um estudo de casos das empresas brasileiras de construção de infraestrutura

Contractors Odebrecht, Camargo Correa and Andrade Gutierrez play an important role in Brazil's economy stressed by the number of jobs they add, capital accumulation and diversification through the acquisition of state firms and assets. Abroad, they rank among the top companies in the industry. Is there a behavioral standard among these firms? How did they grow? Why did they diversify? What triggers them to internationalization and what are the strategies they adopt in the foreign markets? The attempt to shed light on these questions resulted in the observation of patterns inside Brazilian market as they grew and diversified, but such a pattern could not be detected in the internationalization process

Sequência didática e o interacionismo sociodiscursivo na geografia escolar: propostas teórico-metdologógicas

Pós-graduação em Geografia - IGCE