Análise não-linear do campo de temperaturas desenvolvidas durante a soldagem do tipo TIG contínuo em placas delgadas

This study offers an analytical approach in order to provide a determination of the temperature field developed during the DC TIG welding of a thin plate of aluminum. The non-linear characteristics of the phenomenon, such as the dependence of the thermophysical and mechanical properties with temperature were considered in this study. In addition to the conductive heat exchange process, were taken into account the exchange by natural convection and radiation. A transient analysis is performed in order to obtain the temperature field as a function of time. It is also discussed a three-dimensional modeling of the heat source. The results obtained from the analytical model were be compared with the experimental ones and those available in the literature. The analytical results show a good correlation with the experimental ones available in the literature, thus proving the feasibility and efficiency of the analytical method for the simulation of the heat cycle for this welding process.

Aplicação da democracia deliberativa como mecanismo de efetivação do direito fundamental a uma administração pública proba

This study aims to analyze citizen participation in state policy decisions, as an essential element of legitimacy in the branches of government, especially in the sphere of the Executive, in the context of deliberative democracy. But, this study still has the desideratum to understand the citizen's role in public life, especially in the sphere of the Executive Branch, in order to effect the Fundamental Right to Public Administration proba, efficient and honest. Thus, to achieve this mister, the proposal is to expose the pesamento the classic contractualist, Thomas Hobbes, John Locke and Rousseau about the legitimacy of governments, through the statutes, and the question of the general will and majority rule as well how to present the comments of Thomas Jefferson on popular sovereignty and dialogical citizen participation in matters of local interest. After, it will be studied the theories of Fundamental Rights in order to demonstrate the need for the Civil Service should be veiled in a more specific custody rights, given the deep crisis in the Public Administrative practice due, especially, corruption. On the other side, the fundamentality of management also covers the aspect of the development of cities, which decisively affects the development of man, which, to join a deliberative governance program needs to be politicized, adopting full participation, dialogue, as duty citizen. Furthermore, taking as most heart, will be presented the doctrine of Jürgen Habermas, whose Discourse Theory element is to be followed for the implementation of a This study aims to analyze citizen participation in state policy decisions, as an essential element of legitimacy in the branches of the government, especially in the sphere of the Executive, in the context of deliberative democracy. But, this study also has the desideratum to understand the citizen's role in public life, especially in the sphere of the Executive Branch, in order to actualize the Fundamental Right to a just, efficient and honest Public Administration. Thus, to achieve this necessity, the proposal is to expose the thought of the classic contractualist thinkers, Thomas Hobbes, John Locke and Rousseau about the legitimacy of governments, through the statutes, and the question of the general will and majority rule as well as how to present the comments of Thomas Jefferson on popular sovereignty and dialogical citizen participation in matters of local interest. Later on, the theories of Fundamental Rights will be studied in order to demonstrate that the need for the Civil Service should be veiled in a more specific right custody, given the deep crisis in the Public Administrative practice due to, especially, the corruption. On the other hand, the fundamentality of management also covers the aspect of the development of cities, which decisively affects the development of man, who, to join a deliberative governance program, needs to be politicized, adopting full participation and dialogue as a citizen responsibility. Furthermore, taking as the major heart, it will be presented the doctrine of Jürgen Habermas whose Discourse Theory element is to be followed for the implementation of a broad deliberative and emancipatory democracy, with effective citizen participation. It will also be considered the Condorcet Constitution Project as a comparative link in the linking of the public deliberative will, and the Central Power, in the face of the Theory of “Sluice” Habermas. The proposal, based on communicative action, must allow a continuous flux and influx process of social interests towards the exercise of administrative power. The dialogical deal, brought to the center of the decisions, will allow discussions in the public scope, and may contribute to the legitimacy of government actions, inasmuch as it creates the feeling of politicization demanded by the man in a democratic state.

Impacto do exercício físico na qualidade de vida e do sono em pessoas vivendo com HIV/AIDS

The increased incidence along to new therapies for the treatment of HIV/AIDS bring way up exercise as a treatment option, as this promotes relevant changes in the general functioning of the body. The objective of this study was to evaluate in different periods the influence of exercise on quality of life and quality of sleep people living with HIV/AIDS, Natal/RN. The sample consisted of 17 people living with HIV/AIDS participating in physical exercise program, along accompanied by 25 months during the period January 2013 to April 2015. We evaluated through specific instruments quality of life, sleep quality and immunological parameters, which were evaluated before starting the exercise program and reassessed during periods of 2-4 months (short), 5-17 months (average period or intermediate) and finally to 19-25 months (long period). The results showed significant differences in five of the nine areas of quality life, pointing positive behaviors, specifically in the areas overall function, life satisfaction, health concerns, concerns about the medication and acceptance to HIV. We conclude that physical exercise promoted benefits both in short and long term, especially for the areas of quality of life of people living with HIV/AIDS and also demonstrated positive behavior changes and to aspects of sleep quality.

Efeitos do Kinesio Taping® sobre os marcadores clínicos indiretos de dano muscular induzido pelo exercício excêntrico: ensaio clínico randomizado

Objective: analyze the effect of Kinesio Taping (KT) on the indirect clinical markers of muscle damage induced by eccentric exercises in the elbow flexors in healthy individuals. Materials and methods: It is a randomized controlled trial involving sixty volunteers at age group between 18 and 28 years randomly selected. The sample into three groups with twenty participants: control group (CG) – eccentric protocol without KT, KT group – eccentric with tensioned KT, placebo group – eccentric protocol KT with no tension. The evaluations took place at four moments; the first one was the basis line (AV1), after the second protocol (AV2) and the following two groups 24 (AV3) and 48 hours (AV4) after the intervention protocol. The muscle damage was induced by sixteen maximum eccentric contractions of the elbow flexors from the non-dominant limb, divided in two sets of eight repetitions, at 60º/s, with two minutes interval. The variables analyzed were: the joint amplitude in rest, the level of pain, the joint position sense (JPS) followed of isokinetic checking with electromyographic sign capitation. These data were analyzed in software SPSS 20.0. The normality was identified by Kolmogorov-Smimov examination and then, being used the ANOVA mixed model with significance of 5%. Outcomes: a decrease was observed at joint amplitude moreover, an immediate increase of pain wich increased after 24 and remained until 48 hours at all groups searched. There was not difference at the JPS. The variables peak torque, average peak torque, total work and mean power mean reduced until 48 hours after muscle lesion in all groups. Among the groups, there was no difference in EMG values and for any of the variables. Conclusion: The KT did not influence at the indirect clinical markers of muscle lesion induced by eccentric exercises in the elbow flexors in healthy people.

Efeitos do Kinesio Taping® sobre os marcadores clínicos indiretos de dano muscular induzido pelo exercício excêntrico: ensaio clínico randomizado

Objective: analyze the effect of Kinesio Taping (KT) on the indirect clinical markers of muscle damage induced by eccentric exercises in the elbow flexors in healthy individuals. Materials and methods: It is a randomized controlled trial involving sixty volunteers at age group between 18 and 28 years randomly selected. The sample into three groups with twenty participants: control group (CG) – eccentric protocol without KT, KT group – eccentric with tensioned KT, placebo group – eccentric protocol KT with no tension. The evaluations took place at four moments; the first one was the basis line (AV1), after the second protocol (AV2) and the following two groups 24 (AV3) and 48 hours (AV4) after the intervention protocol. The muscle damage was induced by sixteen maximum eccentric contractions of the elbow flexors from the non-dominant limb, divided in two sets of eight repetitions, at 60º/s, with two minutes interval. The variables analyzed were: the joint amplitude in rest, the level of pain, the joint position sense (JPS) followed of isokinetic checking with electromyographic sign capitation. These data were analyzed in software SPSS 20.0. The normality was identified by Kolmogorov-Smimov examination and then, being used the ANOVA mixed model with significance of 5%. Outcomes: a decrease was observed at joint amplitude moreover, an immediate increase of pain wich increased after 24 and remained until 48 hours at all groups searched. There was not difference at the JPS. The variables peak torque, average peak torque, total work and mean power mean reduced until 48 hours after muscle lesion in all groups. Among the groups, there was no difference in EMG values and for any of the variables. Conclusion: The KT did not influence at the indirect clinical markers of muscle lesion induced by eccentric exercises in the elbow flexors in healthy people.

Efeitos da terapia laser de baixa intensidade associada ao exercício aeróbio no reparo de tenotomia do tendão de aquiles de ratos diabéticos

Diabetes Mellitus (DM ) is a complex disease that requires continuous medical care for the reduction of risk factors in addition to glycemic control. The typical hyperglycemia of this disease produces glycosylation of proteins and so the consequence is the accumulation of glycosylation final products in various human tissues, among them, the tendon. The aerobic exercise (AE) and the low level laser therapy (LLLT) have been used to treat tendinopathies in individuals with or without DM. Objective: The aim of this study was to watch the effect of the LLLT and the AE, in association, in partial tenotomy of the tissue repair of the Achilles tendon (AT) of diabetic rats. Methods: 91 animals were utilized and divided in to the following groups: control group (GC), injured control group (GCL), diabetic group (GD), diabetic group LLLT (GD – TLBI), diabetic group trained (GD - EX) and diabetic group trained laser (GD-EX+TLBI). The animals were submitted to intervention with AE, using a protocol with a progressive increase of time (12 to 60 min) and speed of (4 to 9 m/min), and the LLLT (660 nm laser, 10mW, 4 J/cm², single point for 16 seconds, three times for week). It was analyzed morphological, biomechanical and molecular characteristics. For data showing normal distribution was used one-way ANOVA test and post hoc Tukey and data without normal distribution was used Mann Whitney test and post hoc Dunn's. It was accepted p <0.05 for statistical significance Results: The biomechanical tests indicated major improvement in the GC and GD-EX+TLBI groups when compared with the diabetic groups in the following variables: maximum load, strain, absorbed energy, stress, cross section area, elastic modulus and energy density (p<0.05). The analysis through molecular biology indicated that the association of aerobic exercise and LLLT generated an increase of the collagen I gene expression and modulated the expression of the MMP2 and MMP9 (p<0.05). No observed any major improvement in the morphological variable studied. Conclusion: the LLLT associated with aerobic exercise promotes and increase of the mechanical properties, in the control of collagen I gene expression and of the MMP2 and MMP9 of the diabetic rats.