Relationship between composition and organizational levels of nanostructured systems formed by Oleth 10 and PPG-5-Ceteth-20 for potential drug delivery

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

Sistemas precursores de cristais líquidos mucoadesivos para administração bucal de curcumina no tratamento do câncer bucal

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

Simetria quiral: fótons, píons e núcleons

Pós-graduação em Física - IFT

Tratabilidade de águas pluviais utilizando coagulante natural a base de tanino visando fins não potáveis

This paper aimed to study the treatability of rainwater using natural coagulant tannin based. Assays were performed in laboratory scale and aimed to study the conditions most suitable for dosage and for pH of coagulation. Preliminary tests indicated that tannin concentration of 3% (m/m) prepared from the commercial solution presented the best set of results (84.3% of removal for apparent color and 82.51% for turbidity) compared to ferric chloride (66.25% of removal for apparent color and 67.82% for turbidity) and starch (73.68% of removal for apparent color and 67.19% for turbidity). The coagulation diagrams indicate that the best region for dosage ranges from 15 mg/L to about 37.5 mg/L and for pH ranging from about 6.5 to 7.5. The results indicate that the tannin based natural coagulant may be an alternative to conventional coagulants for rainwater treatment seeking non potable uses.

Teores e quantidade de alguns elementos no córrego Lavapés, sub-bacia do rio Sorocaba, São Paulo, Brasil

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

Corpos em travessia: ensaio de uma clínica dos fluxos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Fabricação e caracterização elétrica de filmes nanoestruturados de derivados do politiofeno

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A geometria presente em alguns livros didáticos dos anos finais do ensino fundamental

Pós-graduação em Educação Matemática - IGCE

O Raciocínio lógico-matemático: classificação e uso em concursos públicos

This study offers an analysis of classification of the main issues of logic and logical thinking found in competitive tendering and math tests, according to their concepts and characteristics, whether involving mathematics, or not. Moreover, a research on the evolutionary historic processes of logic according to three major crises of the foundations of mathematics was conducted. This research helped to define Logic as a science that is quite distinctive from Mathematics. In order to relate the logical and the mathematical thinking, three types of knowledge, according to Piaget, were presented, with the logical-mathematical one being among them. The study also includes an insight on the basic concepts of propositional and predicative logic, which aids in the classification of issues of logical thinking, formal logic or related to algebraic, and geometric or arithmetic knowledge, according to the Venn diagrams. Furthermore, the key problems - that are most frequently found in tests are resolved and classified, as it was previously described. As a result, the classification in question was created and exemplified with eighteen logic problems, duly solved and explained

Introdução aos sistemas aviônicos de rádio navegação

This work is focused on the subject of air radio navigation systems embedded on aircraft and in the ground stations. Initially is presented a historical context and motivation of the chosen theme. In the following chapters the basics avionics systems are presented, ADF, VOR, DME and ILS such that there is a deepening of electronics theory behind the operation of each system. In this graduate work were presented theories involved in systems such as the definition and creation of radio waves, the frequency spectrum used by each system, the modulation and demodulation of waves, the operating block diagrams of embedded receiver in the aircraft and the terrestrial source station, and the errors involved in the use of each system

O Raciocínio lógico-matemático: classificação e uso em concursos públicos

This study offers an analysis of classification of the main issues of logic and logical thinking found in competitive tendering and math tests, according to their concepts and characteristics, whether involving mathematics, or not. Moreover, a research on the evolutionary historic processes of logic according to three major crises of the foundations of mathematics was conducted. This research helped to define Logic as a science that is quite distinctive from Mathematics. In order to relate the logical and the mathematical thinking, three types of knowledge, according to Piaget, were presented, with the logical-mathematical one being among them. The study also includes an insight on the basic concepts of propositional and predicative logic, which aids in the classification of issues of logical thinking, formal logic or related to algebraic, and geometric or arithmetic knowledge, according to the Venn diagrams. Furthermore, the key problems - that are most frequently found in tests are resolved and classified, as it was previously described. As a result, the classification in question was created and exemplified with eighteen logic problems, duly solved and explained

Introdução aos sistemas aviônicos de rádio navegação

This work is focused on the subject of air radio navigation systems embedded on aircraft and in the ground stations. Initially is presented a historical context and motivation of the chosen theme. In the following chapters the basics avionics systems are presented, ADF, VOR, DME and ILS such that there is a deepening of electronics theory behind the operation of each system. In this graduate work were presented theories involved in systems such as the definition and creation of radio waves, the frequency spectrum used by each system, the modulation and demodulation of waves, the operating block diagrams of embedded receiver in the aircraft and the terrestrial source station, and the errors involved in the use of each system

Análise climatológica da precipitação e do transporte de umidade na região da ZCAS através da nova geração de reanálises

O conhecimento do desempenho das reanálises e dos erros associados a elas apresenta um papel fundamental na compreensão dos processos físicos que ocorrem na atmosfera. Este trabalho tem por objetivo documentar as principais características da precipitação associada à Zona de Convergência do Atlântico Sul (ZCAS), baseado em seis conjuntos de reanálises atmosféricas (MERRA, ERA-Interim, ERA-40, NCEP 1, NCEP 2 e NCEP CFSR) e cinco conjuntos de produtos observados de precipitação (SALDAS, CPC, CMAP, GPCP e GLDAS). Através destes dados também foi analisado o transporte de umidade sobre a região da ZCAS, para os anos de 1979 a 2007. Em resumo, este trabalho evidencia o avanço das novas reanálises na tentativa de representar de forma mais adequada a variável precipitação acumulada. Os diagramas de Taylor mostram que os produtos de precipitação estão bem correlacionados com o ponto de referência (CPC), com coeficientes entre 0,6 e 0,9. Somente a reanálise do NCEP CFSR possui correlações próximas as dos produtos de precipitação. Os conjuntos mais antigos de reanálises apresentam correlações menores, abaixo de 0,6. O Oceano Atlântico é a fonte principal do fluxo de umidade para a direção da ZCAS, que diminui na direção do continente. Na Região SE do Brasil, a topografia tem um papel importante para a convergência de umidade. Já na parte noroeste da ZCAS, este fator deve estar associado a processos termodinâmicos.

Contribution to assessing the stiffness reduction of structural elements in the global stability analysis of precast concrete multi-storey buildings

This study deals with the reduction of the stiffness in precast concrete structural elements of multi-storey buildings to analyze global stability. Having reviewed the technical literature, this paper present indications of stiffness reduction in different codes, standards, and recommendations and compare these to the values found in the present study. The structural model analyzed in this study was constructed with finite elements using ANSYS® software. Physical Non-Linearity (PNL) was considered in relation to the diagrams M x N x 1/r, and Geometric Non-Linearity (GNL) was calculated following the Newton-Raphson method. Using a typical precast concrete structure with multiple floors and a semi-rigid beam-to-column connection, expressions for a stiffness reduction coefficient are presented. The main conclusions of the study are as follows: the reduction coefficients obtained from the diagram M x N x 1/r differ from standards that use a simplified consideration of PNL; the stiffness reduction coefficient for columns in the arrangements analyzed were approximately 0.5 to 0.6; and the variation of values found for stiffness reduction coefficient in concrete beams, which were subjected to the effects of creep with linear coefficients from 0 to 3, ranged from 0.45 to 0.2 for positive bending moments and 0.3 to 0.2 for negative bending moments.

Definición y clasificación de cuadriláteros convexos : Contradicciones en las producciones escritas de estudiantes docentes

Reporte del estado de una investigación acción desarrollada en un profesorado en matemática de la Provincia de Buenos Aires, cuyo objetivo es analizar los criterios que emplean los estudiantes docentes al momento de definir y clasificar cuadriláteros convexos. Uno de los propósitos consiste en acompañar a los estudiantes de la cohorte 2011-2014 durante toda la carrera, monitoreando la evolución del concepto durante ese lapso. Entre las líneas de acción previstas pueden destacarse la producción de una secuencia didáctica y su implementación en la Educación Secundaria (ES) por estudiantes en sus prácticas de residencia. En este trabajo se presentan los resultados obtenidos en una encuesta realizada a los estudiantes durante su cursada del 2o año de la carrera, respecto de la definición y clasificación de cuadriláteros convexos. Particularmente se presentan las diferentes contradicciones observadas en las definiciones escritas de trapecio y romboide y en los diagramas clasificatorios producidos por los estudiantes. Finalmente se proponen diferentes dimensiones para la producción de una secuencia didáctica para la ES