Processamento e caracterização da blenda poli (metacrilato de metila) (PMMA) elastomerico e poli (tereftalato de etileno) (PET) pós-consumo

This work studied the immiscible blend of elastomeric poly(methyl methacrylate) (PMMA) with poly(ethylene terephthalate) (PET) bottle grade with and without the use of compatibilizer agent, poly(methyl methacrylate-co-glycidyl methacrylate - co-ethyl acrylate) (MGE). The characterizations of torque rheometry, melt flow index measurement (MFI), measuring the density and the degree of cristallinity by pycnometry, tensile testing, method of work essential fracture (EWF), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were performed in pure polymer and blends PMMA/PET. The rheological results showed evidence of signs of chemical reaction between the epoxy group MGE with the end groups of the PET chains and also to the elastomeric phase of PMMA. The increase in the concentration of PET reduced torque and adding MGE increased the torque of the blend of PMMA/PET. The results of the MFI also show that elastomeric PMMA showed lower flow and thus higher viscosity than PET. In the results of picnometry observed that increasing the percentage of PET resulted in an increase in density and degree crystallinity of the blends PMMA/PET. The tensile test showed that increasing the percentage of PET resulted in an increase in ultimate strength and elastic modulus and decrease in elongation at break. However, in the phase inversion, where the blend showed evidence of a co-continuous morphology and also, with 30% PET dispersed phase and compatibilized with 5% MGE, there were significant results elongation at break compared to elastomeric PMMA. The applicability of the method of essential work of fracture was shown to be possible for most formulations. And it was observed that with increasing elastomeric PMMA in the formulations of the blends there was an improvement in specific amounts of essential work of fracture (We) and a decrease in the values of specific non-essential work of fracture (βWp)

Estudo comparativo de pás para aerogeradores de grande porte fabricadas em materiais compósitos reforçadas com fibra de carbono ou fibra de vidro

The research and development of wind turbine blades are essential to keep pace with worldwide growth in the renewable energy sector. Although currently blades are typically produced using glass fiber reinforced composite materials, the tendency for larger size blades, particularly for offshore applications, has increased the interest on carbon fiber reinforced composites because of the potential for increased stiffness and weight reduction. In this study a model of blade designed for large generators (5 MW) was studied on a small scale. A numerical simulation was performed to determine the aerodynamic loading using a Computational Fluid Dynamics (CFD) software. Two blades were then designed and manufactured using epoxy matrix composites: one reinforced with glass fibers and the other with carbon fibers. For the structural calculations, maximum stress failure criterion was adopted. The blades were manufactured by Vacuum Assisted Resin Transfer Molding (VARTM), typical for this type of component. A weight comparison of the two blades was performed and the weight of the carbon fiber blade was approximately 45% of the weight of the fiberglass reinforced blade. Static bending tests were carried out on the blades for various percentages of the design load and deflections measurements were compared with the values obtained from finite element simulations. A good agreement was observed between the measured and calculated deflections. In summary, the results of this study confirm that the low density combined with high mechanical properties of carbon fibers are particularly attractive for the production of large size wind turbine blades

Obtenção de pós de tântalo metálico a partir da redução aluminotérmica com ignição a plasma

Metallic tantalum has a high commercial value due to intrinsic properties like excellent ductility, corrosion resistance, high melt and boiling points and good electrical and thermal conductivities. Nowadays, it is mostly used in the manufacture of capacitors, due to excellent dielectric properties of its oxides. In the nature, tantalum occurs in the form of oxide and it is extracted mainly from tantalite-columbite ores. The tantalum is usually produced by the reduction of its oxide, using reductants like carbon, silicon, calcium, magnesium and aluminum. Among these techniques, the aluminothermic reduction has been used as the industrial method to produce niobium, tantalum and their alloys, due to the easy removal of the Al and Al2O3 of the system, easing further refining. In conventional aluminothermic reduction an electrical resistance is used to trigger the reaction. This reaction self-propagates for all the volume of material. In this work, we have developed a novel technique of aluminothermic reduction that uses the hydrogen plasma to trigger the reaction. The results obtained by XRD, SEM and EDS show that is possible to obtain a compound rich in tantalum through this technique of aluminothermic reduction in the plasma reactor

Pirólise termoquímica de pós da fibra de coco seco em um reator de cilindro rotativo para produção de bio-óleo

This master thesis aims at developing a new methodology for thermochemical degradation of dry coconut fiber (dp = 0.25mm) using laboratory rotating cylinder reactor with the goal of producing bio-oil. The biomass was characterized by infrared spectroscopy with Fourier transform FTIR, thermogravimetric analysis TG, with evaluation of activation energy the in non-isothermal regime with heating rates of 5 and 10 °C/min, differential themogravimetric analysis DTG, sweeping electron microscopy SEM, higher heating value - HHV, immediate analysis such as evaluated all the amounts of its main constituents, i.e., lignin, cellulose and hemicelluloses. In the process, it was evaluated: reaction temperature (450, 500 and 550oC), carrier gas flow rate (50 and 100 cm³/min) and spin speed (20 and 25 Hz) to condensate the bio-oil. The feed rate of biomass (540 g/h), the rotation of the rotating cylinder (33.7 rpm) and reaction time (30 33 min) were constant. The phases obtained from the process of pyrolysis of dry coconut fiber were bio-oil, char and the gas phase non-condensed. A macroscopic mass balance was applied based on the weight of each phase to evaluate their yield. The highest yield of 20% was obtained from the following conditions: temperature of 500oC, inert gas flow of 100 cm³/min and spin speed of 20 Hz. In that condition, the yield in char was 24.3%, non-condensable gas phase was 37.6% and losses of approximately 22.6%. The following physicochemical properties: density, viscosity, pH, higher heating value, char content, FTIR and CHN analysis were evaluated. The sample obtained in the best operational condition was subjected to a qualitative chromatographic analysis aiming to know the constituents of the produced bio-oil, which were: phenol followed by sirigol, acetovanilona and vinyl guaiacol. The solid phase (char) was characterized through an immediate analysis (evaluation of moisture, volatiles, ashes and fixed carbon), higher heating value and FTIR. The non-condensing gas phase presented as main constituents CO2, CO and H2. The results were compared to the ones mentioned by the literature.

Evuloção cognitiva e funcional de pacientes pós-acidente vascular cerebral - AVC

PURPOSE: Stroke is a high-incidence cerebrovascular disease with elevated morbidity that results in impairments such as functional disabilities. This study aimed to investigate the functional evolution of individuals in the first six months post-stroke. METHOD: Longitudinal study with 42 stroke patients. The functional independence measure (FIM) and The National Institutes of Health Stroke Scale (NIHSS) were used by multidisciplinary staff 3 times in each participant; the first application was at admission to rehabilitation and the others three and six months later. RESULTS: Sample predominantly female (57%), married (52%), mean age 65.26 ±10.72 years, elementary schooling level (43%), ischemic stroke (91%), and right cerebral hemisphere (74%). Motor FIM scores and NIHSS scale showed improvement in the 3 evaluations, with significant p-value (<0.001). There was a strong relation between motor FIM evolution and NIHSS evolution (r = - 0.69 p-value< 0.001). CONCLUSIONS: It was observed that functional evolution at 6 months post-stroke was significant and the smaller the evolution of clinical impairment in these patients, the larger the evolution of their functional independence. The study is important because it allows a more appropriate therapeutic planning according with functional evolution in stroke rehabilitation

Síndrome metabólica e risco cardiovascular na pós- menopausa: avaliação por diferentes critérios diagnósticos e influência de fatores sócio-econômicos

The metabolic syndrome (MetS) involves a group of risk factors and is associated with a significantly higher risk of developing cardiovascular diseases (CVD) and type 2 diabetes. Recent studies have shown the importance of preventing CVD through early diagnosis and treatment of patients with MetS. The objective of our study was to determine the prevalence of MetS by different diagnostic criteria in postmenopausal women and analyze the influence of socioeconomic factors on cardiovascular risk in this sample of the population. A cross-sectional study involving 127 postmenopausal women (45 to 64 years) from Natal and Mossoró, Brazil. The study was approved by the Research Ethics Committee of the Federal University of Rio Grande do Norte. The experimental protocol consisted of applying structured interview, clinical examination and implementation of dosages blood. The diagnosis of MetS was based on NCEP-ATP III (National Cholesterol Education Program-Adult Treatment Panel III) and IDF (International Diabetes Federation) criteria. The research was accomplished with the participation of an interdisciplinary team in their several phases. The result of the sample studied had mean age of 53.9 ± 4.6 years and per capita income of 54.5 dollars. The prevalence of MetS, according to NCEP-ATP III and IDF criteria, was 52.8% and 61.4$, respectively. The agreement rate between NCEP-ATP III and IDF criteria was 81.9%, with a kappa value of 0.63 (CI 95%, 0.49-0.76), indicating good agreement between the two definitions. The most prevalent cardiovascular risk factor was HDL < 50 mg/dl, observed in 96.1% of the women analyzed, followed by increased waist circumference (≥ 80 cm) in 78.0%, elevated blood pressure in 51.2%, triglycerides ≥ 150 mg/dl in 40.9% and glycemia ≥ 100 mg/dl in 37.0% of the women. The occurrence of MetS was significantly associated with schooling and body mass index (BMI). High blood pressure was significantly associated with low family income, low schooling and weight gain. There was no significant association between the intensity of climacteric symptomatology and the occurrence of MetS. The conclusions of the research were that MetS and its individual components show a high prevalence in postmenopausal Brazilian women, and significant associations with weight gain and low socioeconomic indicators. The data point to the need for an interdisciplinary approach at the basic health care level, directed toward the early identification of risk factors and the promotion of cardiovascular health of climacteric women.

Avaliação da incontinência urinária de esforço em mulheres na pós-menopausa com e sem queixa de perda urinária através da aplicação do pad-test de 1 hora

Stress urinary incontinence (SUI) is defined as "involuntary loss of urine" due to several processes that alter the ability of the bladder to hold urine properly, regarded as a social and hygienic problem that adversely affects quality of life. In postmenopausal women, IU is associated with atrophy and weakness of the pelvic floor muscles. The objective this study was investigate, using the onehour pad test, stress urinary leakage (SUI), evaluate and compare their results in postmenopausal and premenopausal women. The survey was characterized as a cross-sectional study. The study consisted of 60 postmenopausal women were divided into GIU - consisting of 34 volunteers complaining of involuntary loss of urine during stress - and GSIU - consisting of 26 volunteers without complaints of loss of urine during stress, and 15 women, during the premenopausal (GPM), and ovulatory with normal menstrual cycle. All volunteers were evaluated clinically, subjected to one-hour pad test, after the biochemical evaluation of blood and sex hormones. Statistical analysis was performed by descriptive analysis, ANOVA, Turkey´s post-test and Pearson correlation. The results showed that 100% of postmenopausal patients had involuntary loss of urine during one hour pad test (GIU: 4.0 g; GSIU: 4.5 g). GPM remained continent after an hour pad test (GPM: 0.4 g). In addition, Pearson showed a strong correlation between urine loss with time since menopause (r = 0.8, p <0.01) and body mass index - BMI (r = 0.7; p = 0.01). These data suggest that the one-hour pad test is a useful test to assess and quantify urinary leakage, including those volunteers who had no previous complaint of SUI

Mudanças Morfofuncionais Ditadas pela Menarca no Âmbito Escolar

O processo de desenvolvimento e crescimento humano é um constructo de etapas que se sucedem e se sobrepõe, em um continuo de eventos que podem interferir diretamente sobre as características morfofuncionais do indivíduo. O objetivo deste estudo de Mestrado está centrado na observação do comportamento de variáveis morfofuncionais na linha do tempo, ditado pelo evento da menarca no âmbito escolar do ensino fundamental ao médio. O estudo caracterizou-se como transversal com cunho descritivo, tipologia desenvolvimental e delineamento comparativo. A amostra foi composta por 1148 jovens estudantes do sexo feminino com idades entre 10 e 17 anos residente na zona urbana da cidade de Natal/RN. Foram subdivididas em grupos pelo distanciamento da menarca, sendo o Grupo I (M0) n= 289; Grupo 2 (M) n102=; Grupo 3 (M1) n=100; Grupo 4 (M2) n=109; Grupo 5 (M3) n=177; Grupo 6 (M4)n= 371. Para os instrumentos da coleta foram utilizados as medidas de dobras cutâneas Triciptal, subescapular, de Tórax, Axilar Média, Supra-Ilíaca, Supra- Espinhal, de Abdômen, de Coxa Média e de Perna. Perímetros de cintura, quadril, abdômen e coxa média. Também foi utilizado o diâmetro ósseo de Bi-cristal e Bi-acrômio e força de membros superiores através do teste de apoio no solo, força de tronco através do teste abdominal e flexibilidade do quadril através do teste de amplitude angular. O tratamento estatístico utilizado nos artigos obedeceu ao princípio estatístico descritivo com valores de tendência central e seus derivados e como tratamento inferencial para o artigo final da dissertação utilizou-se um índice percentual de mudanças entre os momentos maturacionais e a magnitude percentual das mudanças e ainda o teste não paramétrico de Mann-Whitney U. Os resultados do estudo demonstraram que o pico de alteração no desenvolvimento morfofuncional do grupo estudado, ocorreu um ano após a menarca. Apontando para a importância dos efeitos das transformações morfofuncionais decorrentes pela maturação, indicando mesmo que de maneira indireta, efeitos hormonais nestas mudanças. O que ora está demonstrado pelos trabalhos que integram esta dissertação, nos permite concluir que, embora circunscrito aos sujeitos observados, que a maturação constitui-se como instrumento decisivo na investigação do crescimento e desenvolvimento da criança e do adolescente, sendo o ambiente como demostrado fator de interveniente sobre estas variáveis. Ao finalizar esta etapa de estudos sobre o tema, deixamos a sugestão da continuidade da pesquisa, agora com a utilização de intervenções com aulas padronizadas com diferentes estratégias, para investigação das interveniências da atividade física no ambiente escolar e fora dele, na busca de um método ou de métodos mais adequados a minimizar aos efeitos combinados, do crescimento e hipocinesia.

Avaliação da eficácia analgésica no pós-operatório de revascularização do miocárdio: ensaio clínico randomizado controlado

A analgesia pós-operatória eficaz é especialmente importante após cirurgias torácicas, pois, além de aliviar a dor, facilita a retomada de atividades normais, incluindo a deambulação, a respiração e a tosse. Dessa forma, os objetivos deste estudo são: avaliar a eficácia analgésica da associação entre anestesia geral e raquianestesia com morfina e ropivacaína mais esquema multimodal em relação à anestesia geral e esquema multimodal em cirurgia de revascularização do miocárdio; analisar a eficácia analgésica da injeção subcutânea de lidocaína e analgesia multimodal na remoção de tubos torácicos em cirurgia de revascularização do miocárdio. A metodologia consiste em ensaio clínico randomizado, controlado, envolvendo 58 pacientes, de ambos os sexos, com idade média de 59,8  8,9 anos, estado físico ASA II e III. Os participantes foram alocados em dois grupos, sendo o GI composto por indivíduos submetidos à anestesia geral combinada à raquianestesia com morfina 400μg e 6 ml (30mg) a 8 ml (40mg) de ropivacaína a 0,5% e analgesia multimodal; já o GII foi composto por indivíduos submetidos à anestesia geral associada à analgesia multimodal. Foi avaliada a dor, ao despertar, nas primeiras 24 horas, e ao realizar exercício respiratório, ao retirar drenos de torácicos e o tempo para extubação. A análise estatística foi realizada pelos testes do Qui-quadrado e Teste t de Student e o teste de Fisher. O resultado obtido foi o seguinte: o GI apresentou menor intensidade de dor ao despertar (p= 0,001), nas primeiras 24 horas (p= 0,001) e durante a realização dos exercícios respiratórios (p= 0,004). Houve maior necessidade de analgesia complementar no grupo GII, com maior consumo de morfina (p= 0,05), e os efeitos colaterais leves, como náuseas (p= 0,001), vômito (p= 0,002), prurido (p= 0,030), predominaram no GI. Não houve diferença estatisticamente significante entre os grupos (P= 0,47), em relação à intensidade de dor na remoção dos drenos. Após as observações feitas, o estudo sugere que a anestesia geral combinada à raquianestesia com morfina associada à ropivacaína oferece melhor efeito analgésico no pós-operatório de cirurgia cardíaca. Adicionalmente, o estudo sugere que o efeito analgésico da injeção subcutânea de lidocaína 1% associado à analgesia multimodal não é eficaz

Osteopenia diabética e pós-menopausa: efeito metabólico do zinco na recuperação do volume ósseo trabecular

Diabetes mellitus has been associated with bone metabolism alterations, such as osteopenia and osteporosis. So, the search of new anabolic agents promote bone mass gain can be important to prevent osteoporosis. The aim of this study was evaluate zinc anabolic effect over bone in diabetic and post-menopausal osteopenic models. Diabetes was induced by STZ (45mg/Kg of body weight) administration and post-menopausal by bilateral ovariectomy. Adults female Wistar rats (n=65) were divided in 5 groups: control group (n=15), ovariectomized without (n=15) and with zinc supplementation (n=10) groups, diabetic and ovarioctomized without (n=15) and with zinc supplementation (n=10) groups. Studied periods had been untill 90 days. Diabetic condition was confirmed hiperglicemic state and alterations of state with polyuria, polyphagia, polydipsia and glucosuria. Histomorphometric analysis showed that zinc supplementation increased trabecular thickness and reduced trabecular distance significantly in diabetic groups with similar values to those showed in control group. Correlation analysis of histomorphometric parameters with serum glucose concentration showed that more time in hyperglycemia more bone damage, as well as, zinc supplementation contributed to prevent this damage. Elevated serum glucose caused hyperzincuria, phosphaturia and calciuria. Zinc supplementation promoted increased levels of calcium and phosphorous ions in 90th days diabetic group. No alteration was observed by ovariectomy in mineral (Ca, P and Zn) serum and urine concentrations. Total serum Alkaline Phosphatase activity increased in diabetic groups, supplemented or not, compared with control group. However, Tartarate-Resistant Acid Phosphatase, magnesium and serum zinc did not altered in studied groups. Serum albumin was reduced only in diabetic groups. Serum creatinine was unaltered. These results support the hypotesis that zinc can be used to prevent and treat diabetic and post-menopausal osteopenia

Paulo Freire e a pedagogia do oprimido: afinidades pós-coloniais

The main objective of the present research is to reflect on the affinities between post-colonial theories - analytical perspectives directed toward the discussion of colonialism and its effects on the contemporary social fabric - and Brazilian educator, Paulo Freire‟s (1921-1997) Pedagogy of the Oppressed, written at the end of the 1960‟s. The study aims to make the argument that the present reflections on the featured work is an example of a post-colonial theoretical framework, delineating a critical modus operandi of colonialism, particularly in its cultural and epistemic dimensions, delineating a problematization of the processes of cognitive domination set, above all, by the European colonization of the Latin American continent, with the formation of the modern-world-system (WALLERSTEIN, 2007), dated from the 16TH Century forward. From this stand point, and especially supported by the contributions of Boaventura de Sousa Santos on the sociology of absence, the present work accentuates Pedagogy of the Oppressed as a set of reflections that bring the possibility of a pedagogy of absence (SANTOS, 1996), having in mind that, this book deals with, the presuppositions of an educational action, which considers the plurality of knowledge and social practices by way of the establishment of a pedagogical practice of collective construction, emancipator and dialogic that arises from the encounter to the indolent reason (SANTOS, 2009) in which the silencing of the voices of the oppressed, construct their conditions of invisibility, promoting also the absence of the social questions inherent to the processes of teaching and learning. It is with this perspective, however, that post colonialism is considered a theoretical site for the affirmation and the reinvention of the Pedagogy of the Oppressed, an obligatory reference in the construction of a prudent knowledge for a decent life (SANTOS, 2006)

Barreiras de sobrevivência: angústias e dilemas de jovens infratores pós-institucionalização

This study critically examines the effects of public policies, implemented by Fundação Estadual da Criança e do Adolescente (FUNDAC/RN), along with adolescents of both sexes, perpetrators of illegal acts in compliance by court order, by socio-educative measures , identifying the contradictions that permeate the understanding and treatment of issue. The aim is to investigate the chances that youths have by living in Centro Educacional Pitimbu and Centro Educacional Padre. João Maria (CEDUC), to become subjects in the exercise of their citizenship. The methodology adopted is the verbal history of life (MEIHY, 2005) of youths that had life experiences in these institutions from 2002 to 2005, allowing researchers to access directly to investigated individuals, through the place where they currently reside, and enabling the reconstitution of their life story, from semi-structured interviews. The young people s statements interviewed were grouped and analyzed from the following categories of analysis: the egress and family, the school and egress, the community and egress, the egress and work, the egress and CEDUC, the egress and experience infringement. The results indicate that, despite the advances in Brazilian legislation for the sector, the actions promoted by these institutions generally would have produced innocuous and stigmatized consequences. Moreover, they show in essence that they carry on their inner contradictions which fundamentally correspond to the interests of the dominant system and a society which uses mechanisms of social policy, in addition to favoring the control and repression. And thus, while such actions remain unable to produce important changes in the conditions of existence of young people who meet by social deprivation of liberty, it is possible to say that the chances are minimal so that they become autonomous subjects in a society that, preferring their punishment, denies them, stubbornly, access to their basic rights. In theory, the researcher dialogues with authors as Foucault, Goffman, Bourdieu, Offe, Bauman, Boaventura Santos, Takeuti, Germano, Ariès, Wacquant, among others

Os dias são maus : o ensino religioso cristão em dias pós-modernos o desafio de fazer crer perante a cultura da incredulidade

This paper adopts the assumption that religion continues to be a major highlight in the dimension of the contemporary world - characterized by pluralism, the ideas of tolerance and freedom. But for certain streams of Christianity, the postmodern culture seems to be characterized as a highly damaging to their doctrines and principles, since this religious matrix carries a truth claim that would support all its significance, its definition values and their dissemination effort ( evangelism ). This is not to say that Christianity is the only religion that claims to the truth, which would be a gross mistake. Now, religion has been reputed as a phenomenon doomed to disappear, according to the " ideology " of Modernity, given the idea that scientific development would lead us inevitably to the statement that religion was merely a social institution based in the superstition, in fantasy, the imaginary and therefore had nothing "real " unless its existence as an institution capable of aggregating society (give it cohesion), provide values and meaning to different ontological anxieties and doubts of humankind. In the contemporary scenario - seeded by modernity - as Christian ideas, doctrines and principles are in harmony or conflict with postmodernity? These are our starting questions and issues that we intend to stop and reflect. From the assumption that the religious phenomenon has great force in the present day, this research aims to perform central analysis of how religious education, a Protestant denomination specific, harmonizes or clashes with the ideology or ideas more general and emphatic that we can observe in the western world is presented to us from the diagnoses made by the contemporary authors who debate about postmodernism and postmodernity, notably David Harvey, Jean - François Lyotard, Bauman Zygmunt and Fredric Jameson

Política de assistência social no Brasil: uma análise a partir das tipologias de políticas públicas

The study of public policy typologies is still a knowledge field which lacks more embracing and applicable studies to different sectors. On that perspective, this work, Social Assistance Policy in Brazil: an analysis from the typologies on public policy, pursues to add the relevant literature to social assistance what focus on the public policy ratings. Moreover, it concerns about a study on the the national policy of social assistance implemented by the Brazilian government from the theoretical referrence of the public policy typologies. For that reason, the referential framework of the public policies as well as the analisys of its fundamentals/principles that are indispensable for achieving a bigger goal, that is to tipify the social assistance policy based on the different public policy typologies and characterize it through the main elements which are intrinsec to the social political and economic reality of Brazil. Thus, the issue suggested for the work is: what is the profile and the political trajectory of the social assistance implemented by the Brazilian Government? How it presents, above all, the features of a distributive, focused and lawful policy, the work has been done througho the following hypothesis: the social assistance policy in Brazil has been of universal, assistance, and focusing aspects. For each of those features granted to the social assistance policy, there is a gathering of changes according to the social, political and economic moment of the country and that stands out due to the different institutions within every cyclical period. The work showed that besides the social policy has gone through meaningful changes during the last decades, even though the adoption of the Organic Law of Social Assistance and its rules, some of the mentioned characteristics still remain, as long as the State s primacy goes on being the economic policies over the dubbed social policies. Notwithstanding, the social assistance will build up itself from the materialization of the growing of the social rights related to the State, but also assuming an important role on the amplified reproducing process regarding the capitalist social relations

Família, aluno e professor: as forças tipológicas da educação básica na região metropolitana de Natal

This work was developed in the research line: "The habitus of study: builder of a new reality in the basic education of metropolitan area Natal" which is being developed with the support of CAPES by the Centre for Education. Acts, especially the problem of academic performance of students in basic education of the public in the Metropolitan Region of Natal (RMN). Thus, the aim of this paper is to construct a typology of students in the 9th year of basic education, attending the public schools (state or municipal) of MRN, 2009, and assess, according to these profiles, what personal characteristics student and their families: economic, social and cultural capital as well as teaching practices create environments capable of favoring a good educational development as measured by the performance obtained in the assessments in mathematics and English language. The data used were provided through the microdata Brazil Exam 2009 held by INEP. We used the methods Grade of Membership (GoM) for construction of profiles relevance of students according to the characteristics already mentioned. With these profiles was verified, which were effectively generating good performance in school curriculum components evaluated. The findings indicate that students belonging to the profile considered good environment, able to achieve better school performance both in Portuguese as in Mathematics, compared to the extreme profiles and adverse deficit