Aplicação da destilação simulada por cromatografia gasosa e da termogravimetria para a avaliação da influência da redução do teor de enxofre sobre as propriedades físico-químicas do óleo diesel

One of the main problems related to the use of diesel as fuel is the presence of sulfur (S) which causes environmental pollution and corrosion of engines. In order to minimize the consequences of the release of this pollutant, Brazilian law established maximum sulfur content that diesel fuel may have. To meet these requirements, diesel with a maximum sulfur concentration equal to 10 mg/kg (S10) has been widely marketed in the country. However, the reduction of sulfur can lead to changes in the physicochemical properties of the fuel, which are essential for the performance of road vehicles. This work aims to identify the main changes in the physicochemical properties of diesel fuel and how they are related to reduction of sulfur content. Samples of diesel types S10, S500 and S1800 were tested according with the methods of the American Society for Testing and Materials (ASTM). The fuels were also characterized by thermogravimetric analysis (TG) and subjected to physical distillation (ASTM D86) and simulated distillation gas chromatography (ASTM D2887). The results showed that the reduction of sulfur turned the fuel lighter and fluid, allowing a greater applicability to low temperature environments and safer for transportation and storage. Through the simulated distillation data was observed that decreasing sulfur content resulted in higher initial boiling point temperatures and the decreasing of the boiling temperature of the medium and heavy fractions. Thermogravimetric analysis showed a loss event mass attributed to volatilization or distillation of light and medium hydrocarbons. Based on these data, the kinetic behavior of the samples was investigated and it was observed that the activation energies (Ea) did not show significant changes throughout conversion. Considering the average of these energies, the S1800 had the highest Ea during the conversion and the S10 the lowest values

Unidades geoambientais e áreas de preservação permanente como instrumentos de auxílio para o planejamento ambiental - o caso da via costeira de Natal-RN

Brazilian law provides a series of rules and policies which regulate space use and occupancy as well as guide environmental planning. Among those are the Permanent Preservation Areas (PPAs) which purpose is to ensure the preservation of elements that are essential to maintain the environmental function and landscape. Another important instrument identifier of spaces are geoenvironmental units, which are synthesis elements grouping areas of similar characteristics and can be used for the analysis of risk, fragility and potential use of spaces. The geoenvironmental units are defined by more complex processes (information integration), focusing not only on individual elements, but being determined from a systemic analysis. Is It possible to identify and delineate APPs from the identification and determination of geoenvironmental units? The aim of this study was to evaluate the potential of geoenvironmental units in the process of identification and delineation of APPs a see how much of the study area, the area by the Coast line in Natal/RN, is still good for occupation. It was used the physiognomic method, in which the limits of the units are plotted on a synthetic document (aerial photographs), valuing aspects of relief in a range of detail by the analysis of systemic categories (element, structure, function and interaction), observed. The methodology used allowed the identification and delineation of eleven geoenvironmental units and, from these, it was possible to identify and delineate four out of the five PPAs occurring in the study area. Only a small space of 1.2 ha of the study area is not considered APP by law. Thus, the occupation of the unoccupied area by the Coast line is not feasible from a legal standpoint. The geoenvironmental units as well as the identified and delineated APPs in the area by the Coast line are spaces which preservation is guaranteed by law in various scopes and are necessary to maintain the environmental functions of the area. The planning for the use and occupation of the area should involve the recovery of degraded areas and the creation of elements that make possible the use as well as attract the community, as provided in the initial planning, by ensuring the public utility and social interest in the Project.

Avaliação do impacto socioambiental de indústrias têxteis no rio Jundiaí - Macaíba/RN/Brasil

The contamination of aquatic environments is a phenomenon that dates back the origins of human civilizations and was amplified by the advent of industrial processes. The Jundiaí river , Macaíba's main water source, suffering discharge of effluents from various industries. The study work´s in two fronts, the environmental perception front was conducted through semistructured interviews whose textile effluent was appointed by the population as the main problem in the river. It was observed that nearly all respondents had concerns about the environment. In addition, there is an inclusion of individuals as the cause of the problem, because a significant part recognizes that its activities may cause damage to the environment and people's health. In other front, the experimental monitoring of water quality was conducted through ecotoxicological tests and physiochemical analysis that proposed to assess Pomacea lineata .Mysidopsis juniae isolated effect of textile effluent and its influence on the river compared with the limits established by Brazilian law. Although the physio-chemical analysis shows is inconclusive about the participation of the textile effluent in environmental contamination of the river, the ecotoxicological tests have shown to blunt the signal that the effluent may present a risk to aquatic organisms and consequently to human health. Thus, an interdisciplinary way it was possible to study the cause of the environmental problem identified by the population in the realization phase and measurable effect on water quality analysis in the river by means of the tests mentioned.

O papel do ambiente residencial na qualidade de vida de idosos: um estudo exploratório em Cabedelo, Paraíba

Currently, the growing aging population challenges the society and public health policies, for increased longevity need to be associated with quality of life. Adequate physical and social environment are key factors for the welfare of the elderly, particularly the housing environment - this thesis understood as the home (dwelling unit) and its surroundings (close proximity). In addition, Brazilian legislation in this sector indicates the importance of the elderly remain at home and in the family. In addition, Brazilian legislation in this sector indicates the importance of the elderly remain at home and in the family. Based on this framework mortar, the thesis was starting questions: How do you live the elderly population aged 80 and over which is served by the Health Family Strategy of the Unified Health System? That social and environmental conditions of the place of residence act more directly on their quality of life? How do these people get housing conditions experienced? The research aimed to investigate how the residential environment (social and physical) influence everyday activities and quality of life of the elderly. Exploratory qualitative study highlighting the home visits, developed based on multimethod strategy. The empirical study was conducted in the city of Cabedelo-PB, Nov/2013 to Feb/2014. Participants were 36 elderly people (31 women and 5 men) aged between 80 and 99 years, little education, who live 39 years in the area (average). In the research first stage were applied questionnaires for socio-demographics and livability of the residence and the surroundings. In the second stage we used semi-structured interview and a tour accompanied in the neighborhood (with those who have accepted to do so). Throughout work it was kept a diary by the researcher and held naturalistic observations of the behavior of the elderly. Quantitative data were described using descriptive statistics, and information from the interviews were analyzed through the Collective Subject Discourse technique. Among the key ideas that emerged from them are: the representation of home, neighborhood support and related issues dyad independence / autonomy. The study showed that the elderly develop strong attachment to the place where he lives, the importance of it for your health and the desire to stay there. Thus, despite experiencing many barriers (more physical than the social), at the place where they live, they say they are satisfied, even when unfavorable conditions are evident. Concluding that as the houses are environmentally more docile, simple changes ensure autonomy, independence and mobility for the elderly. In turn, the barriers of the urban environment show it more difficult to deal with, making this space inhospitable to most survey participants, a condition that hinders your physical activities and social participation, and negatively influence their quality of life.

Depreciação no serviço público: reconhecimento e evidenciação nas demonstrações contábeis dos estados e municípios brasileiros

Public institutions, as well as other entities, if use of various assets for development of its activities. These assets are tools that help with the generation of benefit present and future. For the assets that compound the Property, Plant and Equipament, this loss of generation of future benefits is called Depreciation and must be recognized as an expense in the period in which it occurs. This way, be considered as an expense, the depreciation has negative influence on the composition of the entity’s income, as this is the result of the confrontation between revenue and expenditure incurred in the same period. The Brazilian legislation regulates it is necessary to recognize and disclosure in the financial statements, all of the situations that interfere with the composition of economic and financial income of the public institution. The main objective of this work was to verify if the states and cities recognize and disclosure the depreciation on their Statements of Financial Position. The data were extracted from datas of the Brazilian public administration’s entities.. The sample analyzed is 100% of the States (including the Federal District) and 91% of the Brazilian cities. The research found the historical evolution of the expenditure with depreciation, evidenced in the balance sheets of the Brazilian cities, in the last 10 years, in the period 1999 to 2008. The results indicate that 10 Brazilian states (37 %) did not show the depreciation of fixed assets in the Statements of Financial Position of the year 2008. The situation is even more worrying in relation to cities, because 4,971 (98.4 %) of 5,050 municipalities not evidenced the depreciation. The evidence found in this study indicate that public entities do not recognize the expense with depreciation, which may indicate that the economic income and financial position presented in the financial statements of these public entities does not accurately reflect the actual situation of institutional performance.

O argumento de inclusão enquanto política de acesso à universidade pública

There are a great number of evidences showing that education is extremely important in many economic and social dimensions. In Brazil, education is a right guaranteed by the Federal Constitution; however, in the Brazilian legislation the right to the three stages of basic education: Kindergarten, Elementary and High School is better promoted and supported than the right to education at College level. According to educational census data (INEP, 2009), 78% of all enrolments in College education are in private schools, while the reverse is found in High School: 84% of all matriculations are in public schools, which shows a contradiction in the admission into the universities. The Brazilian scenario presents that public universities receive mostly students who performed better and were prepared in elementary and high school education in private schools, while private universities attend students who received their basic education in public schools, which are characterized as low quality. These facts have led researchers to raise the possible determinants of student performance on standardized tests, such as the Brazilian Vestibular exam, to guide the development of policies aimed at equal access to College education. Seeking inspiration in North American models of affirmative action policies, some Brazilian public universities have suggested rate policies to enable and facilitate the entry of "minorities" (blacks, pardos1, natives, people of low income and public school students) to free College education. At the Federal University of the state Rio Grande do Norte (UFRN), the first incentives for candidates from public schools emerged in 2006, being improved and widespread during the last 7 years. This study aimed to analyse and discuss the Argument of Inclution (AI) - the affirmative action policy that provides additional scoring for students from public schools. From an extensive database, the Ordinary Least Squares (OLS) technique was used as well as a Quantile Regression considering as control the variables of personal, socioeconomic and educational characteristics of the candidates from the Brazilian Vestibular exam 2010 of the Federal University of the state Rio Grande do Norte (UFRN). The results demonstrate the importance of this incentive system, besides the magnitude of other variables

Estudos e propriedades mecânicas de um novo tipo de bloco cerâmico híbrido para edificações em alvenarias estruturais

This dissertation presents a hybrid ceramic block the use of which reside in the buildings executed with walls. Initially, we conducted a survey on the requirements and / or norms prevailing in Brazil about structural ceramic blocks, making use of the experiences in other countries. This work seeks new materials and / or products in order to maintain or increase the compressive strength of the ceramic blocks, without neglecting the other properties. Then was collected materials (clay and crushed powder) and an approach on the characterization, through fluorescence, Mineralogy, vitrification curve and characterization of these materials used in the manufacture of the blocks by Ray Diffraction "X" and SEM. Subsequently it was made, numbered and measured dimensions of about 150 bodies of the test piece (hybrid ceramic blocks in small sizes) with varying percentages of 0%, 5%, 10% and 15% substitution of crushed clay powder. After sintering of the bodies of the test piece at temperatures of 900oC, 1000oC 1100oC and with a heating rate of 5oC/minuto and level of 1 hour, the samples were submitted to the tests (compressive strength and water absorption) and calculated their retractions, which were subsequently carried out the analysis of the results according to the criteria and parameters required by Brazilian legislation and standards in force

Impactos da legislação ambiental brasileira na exportação de camarão: um estudo com exportadores de camarão do Rio Grande do Norte

Brazilian exportations come growing in a constant form in the last years, stimulated for the globalization and public politics directed toward the increase of the internal surplus. In this context the objective of this work was to investigate the perception of the shrimp exporting entrepreneurs of Rio Grande do Norte, with relation to the impact of the Brazilian environmental legislation in the companies competitiveness at the external market. From data collected from the controllers of the companies, it was used a survey methodology, with exploratory and descriptive character. The results found in this study indicate that the companies, in general way, understand that the environmental legal requirements do not confuse nor help in the search and conquest of new international markets. A little more of the half of the researched companies, does not see the legislation rigid as important factor of competitiveness. However a sufficiently significant percentage, already has a more strategical vision on the subject, or at least already it heard to speak on such possibility

A OAB no processo de transformação da sociedade brasileira: a seccional potiguar como espaço de redemocratização (1979-1988)

The period known as the Military Dictatorship (1964-1985) was a period of history marked by Brazil's control of state power by the Armed Forces together, this started with the Civil-Military Coup of April 1964. Was characterized as a time where political freedoms of expression and were placed in check by authoritarian and repressive measures taken by the military governments. The sectional potiguar of the Ordem dos Advogados do Brasil (OAB / RN), and the Federal Council of the institution, supported the establishment of this scam, but from the 1970s undertook measures that sought to corroborate the struggles around democracy the country, which has consolidated its image as a defender of democratic order. With the title inspired by the XII Meeting of OAB in October 1988, the research aims to analyze the participation of OAB / RN and its members within the Brazilian democratization. This analysis begins in 1979 with the participation of the entity in discussions Amnesty Policy to the promulgation of the 1988 Constitution, since the Constitution is the beginning of a full rule of law. We seek to understand the object as a space for democratization, combining the concepts of History, Memory and Politics. In the analyzes are guided theoretically by Jacques Le Goff, Pierre Nora, Maurice Halbwachs, Pierre Bourdieu and Hannah Arendt. Be rebuilt the period of democratic rule in the land potiguares birthing shares of OAB / RN, particularly in the following events: Amnesty Policy 1979, the mobilizations around the campaign of "Direct Now" and the 1988 Constitution We make use of legislation. minutes, papers and interviews built on Oral History.