Structural and Electrochemical Properties of Lutetium Bis-Octachloro-Phthalocyaninate Nanostructured Films. Application as Voltammetric Sensors

Thin films of the bis[2,3,9,10,16,17,23,24-octachlorophthalocyaninate] lutetium(III) complex (LuPc2Cl32) have been prepared by the Langmuir-Blodgett and the Langmuir-Schaefer (LS) techniques. The influence of the chlorine substituents in the structure of the films and in their spectroscopic, electrochemical and sensing properties has been evaluated. The pi-A isotherms exhibit a monolayer stability greater than the observed in the unsubstituted analogue (LuPc2), being easily transferred to solid substrates, also in contrast to LuPc2. The LB and LS films present a linear growth forming stratified layers, monitored by UV-VIS absorption spectroscopy. The latter also revealed the presence of LuPc2Cl32 in the form of monomers and aggregates in both films. The FTIR data showed that the LuPc2Cl32 molecules present a non-preferential arrangement in both films. Monolayers of LB and LS were deposited onto 6 nm Ag island films to record surface-enhanced resonance Raman scattering (SERRS), leading to enhancement factors close to 2 x 10(3). Finally, LB and LS films deposited onto ITO glass have been successfully used as voltammetric sensors for the detection of catechol. The improved electroactivity of the LB and LS films has been confirmed by the reduction of the overpotential of the oxidation of catechol. The enhancement of the electrocatalytic effect observed in LB and LS films is the result of the nanostructured arrangement of the surface which increases the number of active sites. The sensors show a limit of detection in the range of 10(-5) mol/L.

Layer-by-Layer Films Based on Carbon Nanotubes and Polyaniline for Detecting 2-Chlorophenol

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

Uma análise fenomenológica do uso de jogos e materiais manipulativos no ensino de matemática

This work investigates the reasons that take teachers to use or not use manipulative materials in mathematics education as well as the knowledge that teachers of Basic Education schools of the city of Guaratingueta have about such resources. The experience in the classroom, while participating in projects, showed that these resources are important allies in knowledge production. However, we noticed that they are not often present in the teachers teaching practice. This leads us to investigate the relevance of such education resources from authors like Grando (2000) and Macedo (2012) and try to see the idea that math teachers have about their use. For this research we developed a questionnaire and we headed teachers to obtain data. Assuming a posture qualitative with phenomenological approach, organized researched data and interpreted following the procedures described by Bicudo (2011) and Machado (1994). We built three categories or regions of generality that lead us to consider that, for our research subjects, the use of manipulative materials is significant as Didactic Resources and Learning Aid, however, used from a Naïve Knowledge that does not involve reflection on practice or relies on theoretical concepts

Análise da gestão da dívida pública nos governos FHC (1995-2002) e Lula (2003-2010)

Principalmente a partir do final da década de 1990, com as crises internacionais que afetaram especialmente os países em desenvolvimento, passou-se a designar maior importância a temas como dívida pública, sua gestão e o desenvolvimento do mercado de títulos públicos. Nos últimos dezesseis anos da economia brasileira observamos diferentes momentos da situação do endividamento público. O crescimento da relação dívida pública/PIB e a piora da sua composição (em relação aos indexadores) são características do período de governo de Fernando Henrique Cardoso (1995-2002), enquanto o decréscimo da dívida pública em relação ao PIB, assim como a melhora de seu perfil, foram características presentes durante o governo de Luis Inácio “Lula” da Silva (2003-2010). É importante destacar que o cenário da economia mundial, em cada um dos períodos citados, influenciou diretamente na execução da política econômica, e, portanto, na gestão da dívida pública

Análise do Programa Município VerdeAzul na Unidade de Gerenciamento de Recursos Hidricos do Pontal do Paranapanema

The increasing degradation of the environment and the depletion of natural resources, caused by indiscriminate production practices, by current and unlimited human needs and also misconceptions that natural resources are inexhaustible, make current and future environment situation, a constant concern of national and world leaders. With the purpose to confront these issues and to qualify the cities on the environmental situation in the state of São Paulo, the Department of the Environment created, in 2007, the Program “Município VerdeAzul. This paper aims to the study this program of Unit Water Resources Management Pontal Paranapanema through specific analysis of data representing the efficiency of the program directives and a comparative study between two cities unit with discrepant scores and a survey of the possible causes of obtaining low scores for municipalities participating in the project. For such a method was used that consisted of a bibliographical survey related to the main environmental liabilities Brazilians... (Complete abstract click electronic access below)

Qvod erat demonstrandvm: os Exempla no discurso gramatical de Mário Vitorino e Élio Aftônio

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Novo algoritimo genético para problemas de cobertura de conjuntos

The Set Covering Problem (SCP) plays an important role in Operational Research since it can be found as part of several real-world problems. In this work we report the use of a genetic algorithm to solve SCP. The algorithm starts with a population chosen by a randomized greedy algorithm. A new crossover operator and a new adaptive mutation operator were incorporated into the algorithm to intensify the search. Our algorithm was tested for a class of non-unicost SCP obtained from OR-Library without applying reduction techniques. The algorithms found good solutions in terms of quality and computational time. The results reveal that the proposed algorithm is able to find a high quality solution and is faster than recently published approaches algorithm is able to find a high quality solution and is faster than recently published approaches using the OR-Library.

Supramolecular arrangements of an organometallic forming nanostructured films

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

Centralidade, eixos comerciais e consumo: um estudo das concessionárias de automóveis em Presidente Prudente (SP)

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

Possibilidades de diálogo entre o conceito de ideologia em Bakhtin e a teoria das representações sociais

Introducing the theoretical trajectory of social representations theory, outline here the parallel between this theory in social psychology and the Bakhtinian concept of ideology. Both approaches include individual and society as inseparable and views the array of social construction of knowledge forms, related to day-to-day, or composed by formal record of science, as state, religion etc. With this interdisciplinary study, although limited, we hope to contribute to a better understanding of theories that have made important contributions to social psychology, linguistics, ethnography, cultural studies etc.

Representações sociais de professores sobre indisciplina no ensino médio e técnico

O objetivo do presente estudo foi identificar as representações sociais de professores sobre indisciplina em sala de aula. Adotamos a teoria das Representações Sociais como referencial teórico. Os dados foram coletados por meio de entrevistas individuais semiestruturadas. Os participantes foram três professores do ensino técnico, três do ensino médio e três de ambos os ensinos, totalizando nove docentes de uma Escola Técnica Estadual (ETEC) do interior paulista, pertencente ao Centro Estadual de Educação Tecnológica Paula Souza. Utilizando a análise de conteúdo, definimos três eixos temáticos: causas atribuídas à indisciplina, alternativas para lidar com a questão e concepção de indisciplina, para os quais caracterizamos categorias, em que obtivemos a frequência de respostas. Na análise dos resultados, podemos indicar que a representação social da indisciplina parece estar objetivada, principalmente, nas questões individuais dos alunos. Os professores relataram diferentes causas da indisciplina para os ensinos médio e técnico. Foram indicadas algumas diferenças na maneira de lidar com o aluno adolescente e adulto e entre as causas e as alternativas para lidar com a indisciplina. As representações sociais dos professores sobre a indisciplina ancoraram-se, em sua maioria, num referencial tradicional, associado à responsabilização do aluno e da família.

A concepção de criança e alei de nove anos

The historical analysis of the conception of child is essential to understand the speeches, public policies and actions that are set aside for them. The 20th century ´ social-economic changes and the consequent need for women's work produced a restructuring not only in the family, but also in the care and attention focused on childhood. The present article under the perspective of Cultural-historical approach aims to make a reflection about the conception of child in the educational context, especially in the face of recent public policies that favor education´s advance in state schools. Besides, they also intend to point out some consequences and possible problems that may arise with their implementation and discuss the implications for the teacher´s organization of methodological practice and the relationship between development and learning.

Indisciplina no ensino técnico: representações sociais de professores

The present study is a result of a Master’s degree’s research in Psychology, which has been developed with the objective of identifying the social representations of teachers about indiscipline in the classroom. We adopted a qualitative and quantitative approach and also the theory of Social Representations. Data were collected through individual semi-structured interviews. There were three high school teachers, three technical teachers and three teachers from both types of education, resulting in nine teachers from a technical school in São Paulo countryside. We defined three themes to process data through a content analysis, which are: indiscipline causes, alternatives to deal with this issue and conception of indiscipline. This division into themes allowed us to identify categories and we were able to measure frequency and percentage of answers. So far, we analyzed data of interviews corresponding to technical teachers. We noted that most of the answers related to the indiscipline were due to individual and family factors of students. Regarding the alternatives to deal with indiscipline, the answers were mostly related to the relationship of teachers and students. In general, we can say these pre-results show us a difference between the indiscipline causes and the alternatives to deal with them: teachers tend to blame the students themselves and their family problems, but they also say the alternatives are centered on the interaction teacherstudent.

A Psicologia e a judicialização dos casos de violência sexual

The violence is a phenomenon to be faced by several public actions and requires a formal notification system that preserves the victim of suffering from public exposure. This article discusses, in the specificity of Psychology action at the Court of the State of Sao Paulo, the importance of public policy in confronting sexual violence and the assistance of the victims. The main objective of this article is to provide a review of the relationship between the Judiciary and the Public Policy, focusing on networking and the unnecessary judicialization of actions that should be developed in another environment. The way the fact is treated in the family and the society will determine the victims' reactions and their readiness to talk about it, both in the police investigation, as in the judicial lawsuit, or yet, in specific assistance programs.

A relevância das redes de apoio social durante a infância

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