Inserção e atuação profissional do psicólogo no campo das políticas sociais no Rio Grande do Norte

Since the first years of the regulation of Psychology as a profession in Brazil, it has been carried out studies on the academic graduation, practice, workplace and the social commitment of the category. Despite the diversity of goals and propositions, these studies show that psychologists have been significantly inserted into the social policies field, implying changes in the profession. Since the 1980s, researches in Rio Grande do Norte corroborate the results of national studies. The aim of this paper is to study the insertion and professional career of psychologists in the social policies field in Rio Grande do Norte. In order to accomplish the final results of this paper, it was developed an exploratory research, with the use of a questionnaire, comprised of four parts: general data, academic graduation, complementary graduation and professional experience. The results show three groups of information: characterization, insertion and professional performance. It has been verified expressive insertion of psychologists into the social policies field (41%). The socio-demographic and graduation characteristics are not different from those shown by literature: women, young, from families with an average of 7 to 15 minimum wages. Most of them graduated from public institutions and with post-graduation studies in clinical area. The professionals studied seem to be in worse working conditions compared to the rest of the category, which are also in unfavorable conditions, especially the psychologists who work in social assistance institutions, which present greater problems in its structure. The activities developed do not show anything new, reserving conservative practices instead of effective innovations, emphasizing the discussion on the profession for not considering demands presented to the psychologists in the social policies field. With unique scenario, the eproduction of liberal values corroborates classic performance standards; an unpolitical and uncritical practice is diffused. It is then reconsidered the importance of critical studies that organize goals to the category, with the aim of political transformation concerning the current scenario.

Performance comparativa entre R290/R600a (50:50) e R134a para drop-in em refrigerador doméstico

This research this based on the seminar on Use of Natural Fluids in Refrigeration and Air-Conditioning Systems conducted in 2007 in Sao Paulo. The event was inserted in the National Plan for Elimination of CFCs, coordinated by the Ministry of Environment and implemented by the United Nations Development Programme (UNDP). The objective of this research is analyze the performance of the hydrocarbons application as zeotropic mixtures in domestic refrigerator and validate the application of technical standards for pull down and cycling (on-off) tests to the mixture R290/R600a (50:50) in domestic refrigerator. It was first developed an computational analysis of R290/R600a (50:50) compared to R134a and other mass fractions of the hydrocarbons mixtures in the standard ASHRAE refrigeration cycle in order to compare the operational characteristics and thermodynamic properties of fluids based on the software REFPROP 6.0. The characteristics of the Lorenz cycle is presented as an application directed to zeotropic mixtures. Standardized pull down and cycling (on-off) tests were conducted to evaluate the performance of the hydrocarbons mixture R290/R600a (50:50) as a drop-in alternative to R134a in domestic refrigerator of 219 L. The results showed that the use of R290/R600a (50:50) with a charge of refrigerant reduced at 53% compared to R134a presents reduced energy performance than R134a. The COP obtained with hydrocarbon mixture was about 13% lower compared to R134a. Pull down times in the refrigerator compartments for fluids analyzed were quite close, having been found a 4,7% reduction in pull down time for the R290/R600a compared to R134a, in the freezer compartment. The data indicated a higher consumption of electric current from the refrigerator when operating with the R290/R600a. The values were higher than about 3% compared to R134a. The charge of 40 g of R290/R600a proved very low for the equipment analyzed