Equilíbrio líquido-líquido para o sistema biodiesel de óleo de semente de melão (Cucumis melo l.) + metanol + glicerina

Rio Grande do Norte, northeast state from Brazil, it is the greatest producer and exporter of yellow melon, well known as Spanish melon. Despite the consumption of this fruit to be mainly its pulp, melon seeds are an important source of lipids considered an industrial residue it has been discharge product. The use of oilseeds in order to produce biodiesel establishes an important raw material and the increase of its production promotes the national development of the agriculture. In this background, the aim of this work has been to use oil from seeds of yellow melon to produce biodiesel and to accomplish a study of the phase equilibrium of the system evolving biodiesel, methanol and glycerin. The biodiesel was obtained by oil transesterification through methylic route with molar ratio 1:9.7 (oil:alcohol) and with a mass of NaOH of 0.5% from the oil mass; the reaction time was 73 minutes at 55 °C. A yield of 84.94% in biodiesel was achieved. The equilibria data present a well-characterized behavior with a great region of two phases. The tie lines indicate that methanol has a best solubility in the phase that is rich in glycerin. Consistency of the experimental data was made based on Othmer-Tobias and Hand correlations which values above 0.99 were found to correlation coefficients, this fact confers a good thermodynamic consistency to the experimental data. NRTL and UNIQUAC models were employed to predict liquid-liquid equilibrium of this system. It was observed a better concordance of the results when NRTL was applied (standard deviation 1.25%) although the UNIQUAC model has presented a quite satisfactory result either (standard deviation 2.70%). The NRTL and UNIQUAC models were also used to evaluate the effect of temperature in the range of 328 K to 358 K, in which a little change in solubility with respect to the data obtained at 298 K was observed, thus being considered negligible the effect of temperature

As especificidades da clínica psicanalítica com crianças na neurose e na psicose: conseqüências para a direção do tratamento

This dissertation aims to answer the question: What are the specifics of psychoanalytical clinic with children in neurosis and psychosis and its consequences for the treatment direction? It constitutes a theoretical study based on Freud, Lacan and the current productions of Lacanian psychoanalysts about the clinic with children. It presents some clinical vignettes. To answer this question, were constructed four chapters. The chapter The subject constitution treats the psychoanalysis subjectivity, based on a structure from the relationship with the Other. Key concepts of Lacanian psychoanalysis are shown, necessary to understand what becomes present in clinic with children. The second chapter, The clinic of neurosis, reveals the structure of the subject in its oedipal mooring held by the Name-of the-Father, that separates the mother-child dual relationship. The child neurosis is the effect of psyche constitution and the symptoms are an interpretation of what child picks up from parents and helps him/her on the passage through the Oedipus. The analyst is there to help him/her through this path. The next chapter is entitled The clinic of psychosis. In psychosis the non-occurrence of the Name-of-the-Father is concerned. The subject is stuck in duality with the mother, and becomes what fills the Other s gap. To protect themselves, they have to be in incessant work. The analyst will be a child s partner in daily work already carried out by him/her. The last chapter, The consequences for the treatment direction, shows that the standard analytic treatment works well to the clinic of neurosis. To psychosis it s not true. Psychoanalysts thought about a different way of psychotic children treatment: the practice held in a multiprofessional team work. The practice shared by many has been a team strategy applied to the institutional practice that aims to attenuate the invasive character of the Other, facilitating the partnership between the analyst and the child in treatment and the Other contention