Viabilidade do Código MCNPX para o Estudo da Técnica de Fluorescência de Raios-X por Reflexão Total

The X-ray fluorescence analysis (XRF) is an important technique for the qualitative and quantitative determination of chemical components in a sample. It is based on measurement of the intensity of the emitted characteristic radiation by the elements of the sample, after being properly excited. One of the modalities of this technique is the total reflection x-ray fluorescence (TXRF). In TXRF, the angle of refraction of the incident beam tends to zero and the refracted beam is tangent to the sample-support interface. Thus, there is a minimum angle of incidence that there is no refracted beam and all the incident radiation undergoes total reflection. As it is implemented in very small samples, in a film format, self-absorption effects should not very relevant. In this study, we evaluated the feasibility of using code MCNPX (Monte Carlo N - Particle eXtended), to simulate a measure implemented by the TXRF technique. In this way, it was verified the quality of response of a system by TXRF spectroscopy using synchrotron radiation as excitation beam for a simple setup, by retrieving the characteristic energies and the concentrations of the elements in the sample. The steps of data processing, after obtaining the excitation spectra, were the same as in a real experiment and included the obtaining of the sensitivity curve for the simulated system. The agreement between the theoretical and simulated values of Ka characteristic energies for different elements was lower than 1 % .The obtained concentration of the elements of the sample had high relatively errors ( between 6 and 60 % ) due mainly to lack of knowing about some realistic physical parameters of the sample , such as density . In this way, this result does not preclude the use of MCNPX code for this type of application

Análise e reflexão sobre a educação especial inclusiva em Maringá/BR e em Guadalajara /ES

The purpose of this study is to know the route of Special Education in different contexts, the city of Maringa/Brazil and Guadalajara/Spain and analyze the bases underlying the organization, structure and operation of this mode of education having as starting point the process inclusive school. This investigation is based on the theoretical and methodological principles of the historical-cultural notion by Vygotsky. He argues that the existence of fundamental principles underlying the development of children with disabilities. If, on the one hand, the disability imposes limitations on the individual, hindering its development, on the other, just by causing difficulties, enables the movement to compensate, increasing the development of other capabilities. The deficit itself is less. Therefore, it is a field research carried out by means of observations, literature search and document analysis in early childhood education institutions visited in the cities mentioned above. The results showed that there are peculiarities of its path, organization and functioning of Special Education in each of the contexts analyzed. Referentemente the inclusive education movement, it is clear that Spain is a precursor of this process therefore has the right conditions in different ways to conduct the service children with special needs, and on the other hand, schools have the resources and specialized materials they need. While in Brazil the operationalization of these measures occurs more slowly. Thus, we can say that this process of inclusive education does not happen in a linear fashion within mainstream schools and so little action in the different forms of special education in two contexts analyzed.

Autonomia e reflexão nas práticas telecolaborativas em teletandem

New technologies have been playing an important role in providing access to foreign languages and cultures and to authentic communication. Telecollaborative practice can enrich foreign languages teaching and learning and the teachers’ formation processes. This paper focuses on the possibilities that emerge in teletandem for learners to practice autonomy and reflection. Teletandem is a distance tandem modality performed by audio and video conferences with tools such as Windows Live Messenger, Skype or ooVoo. This modality is presented by Teletandem Brasil Project: foreign languages for all. Based on a qualitative ethnographic study with Brazilian and foreign students, the results have shown that teletandem provides and encourages reflexive and autonomous attitudes.

Ensino/aprendizagem de línguas em teletandem: espaços para autonomia e reflexão

This paper focuses on teletandem telecollaborative practice aiming at maximizing the teaching and learning foreign languages and investigating the spaces created for autonomy and reflection. Teletandem is a new context for learning languages in which students are paired up and help each other to learn the language. A qualitative ethnographic study was conducted from partnerships of Brazilian and American students. Based on e-mails, informal conversations, written reports and field notes taken at the Teletandem Laboratory, the results have shown that autonomy is gradually experienced by the partners as they take responsibility for their learning. Teletandem has also proved to be a context which fosters reflective actions.

Pesquisas em animais: uma reflexão bioética

Animal models are an important tool in scientific research. It is known that this practice must be based on bioethical principles in order to impose limits about pain and suffering, or for inspecting proceedings and research site. This study has as aim to evaluate and present current legislation ruling animal research in Brazil, comparing it with other countries, as well as fostering bioethical reflection about this issue. For this, we present current Brazilian legislation and we have carried out international literature review and discussion. The articles were searched in PubMed data base, using the key words "bioethics" and "animal welfare". Nineteen articles from 1997 to 2013 were included. It was concluded the evident contribution of animal research for scientific research in several fields. It is morally relevant for humans, as rational beings, to secure humane treatment to animals contributing to research. The safest way to follow this path is establishing clear norms and studies well designed, involving society for assigning ethical norms. Thus, animal welfare would be guarantee.

Análise da modulação do reflexo H do vasto medial em mulheres com síndrome da dor femoropatelar

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

O reflexo estético como reflexo da realidade: a particularidade em Diego Rivera

Pós-graduação em Ciências Sociais - FFC

Efeito do teor de água na avaliação da compactação do solo causada pelo tráfego agrícola e seu reflexo nos atributos físicos do solo

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

Alienação acadêmica: uma reflexão a partir de Marx, Bauman e Castoriadis

The education is a fundamental part of a human life, extrapolating formal aspects and can be experienced in different existence activities. When the education is analyzed under a cultural context, it's noticed the influence of the education on docent and students formation, being the reproduction of this context. Thus, three aims were stablished: a) revise Marx literature about alienation; b) analyze and compare the understanding of alienation in Bauman's and Castoriadis' theory; c) suggest, from the theoretical readings, a search path in education area. For this purpose, a simple theoretical research was performed, showing the recurrent categories found in a literature review. Besides, the current context is discussed from a sociological and pedagogical point of view, focusing on raise important questioning for the educational area. The results pointed out that in a society characterized by liquid pragmatism, the students turn out to reflect their current society. It is expected - inside the limit of this study - to contributing to the formation of an education more aware of its culture that surrounds them

Escolarização e oportunidade de trabalho: uma pequena reflexão sobre um equívoco comum

This article intends to deal with an ordinary link it does on education and type of work what can be achieved. In two studies we conducted, one with the motorcyclists of Assis, in the state Sao Paulo - under the theoretical and methodological Psychodynamics of Work -, and another with the couriers in São Paulo - under a methodological framework ethnographic -, as we noted this relationship was used professionals to explain their connection and within these activities remain so poor and so dangerous for this group. This connection self cupabilization favors workers by their situation in the labor market and a difficult see no alternative to this reality. Intend to contribute to this discussion show a possible hypothesis as established this relationship (education / access to work) and show how the changes in the political context and economic environment and the world, contributed to the reduction of jobs, increasing the number precarious jobs and unemployment.

Políticas públicas e vulnerabilidade social: uma reflexão teórica a partir de experiência de estágio

This article provides a theoretical reflection on the relationship between public policies and the social vulnerability of children and adolescents, based on the supervised internship of students of Psychology at UNESP/Campus Assis. The work revealed the need to examine the implications that social vulnerability concepts and public policies have in this area of professional activity. The study indicated the importance of addressing the ways that social vulnerability arises, and suggested possible contributions that psychology could make in the social sphere. The work highlights the need for the future psychologist to deepen his/her knowledge of these issues in order to develop a critical professional attitude that breaks from the approach in which individuals and/or their families are considered responsible for the processes that maintain them at risk.