894 research outputs found

    A construção da mercadorização no ensino superior no Brasil

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    A maneira como se construiu a mercadorização do ensino superior no Brasil, a partir da década de 1980, e com uma série de reformas, programas e legislações que apontaram para uma lógica inequívoca de adaptação deste nível de ensino e das instituições que o sustenta, às IFES, para a lógica de produção e reprodução capitalista. Este é o escopo deste artigo, que se apoia na análise de alguns destes programas e legislações - Programa Nova Universidade, LDB de 1996, REUNI - para evidenciar este processo em curso e em construção, a mercadorização e internacionalização da educação superior no país

    ANALISES DE VARIAVEIS PARA ESTRUTURAÇÀO DE UM MODELO ECONOMICO E AMBIENTAL: QUANTIFICAÇÃO DA SUSTENTABILIDADE NO SETOR AGROINDUSTRIAL BRASILEIRO.

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    Este artigo tem por finalidade analisar os conceitos de manutenção e preservação do meio ambiente que promovem desenvolvimento sustentável, tendo em vista a proposta de um modelo econômico e ambiental. Assim, intervenções no padrão da gestão pública que implique no aumento do grau de eficácia na utilização dos recursos financeiros propiciarão uma transformação no paradigma de desenvolvimento que não mais poderá ser excludente e danoso para o meio ambiente. A compreensão do significado de desenvolvimento social e econômico envolve os mecanismos de distribuição das riquezas geradas e neste contexto, a viabilização do conceito de sustentabilidade implicará em mudanças no comportamento social (coletivo) e individual. A discussão quanto ao comportamento e uso racional e planejado dos recursos naturais será fundamental para a perpetuação desses recursos para as gerações futuras.----------------------------------------------Analyzing the concepts of maintenance and preservation of the environment that promote sustainable development is the purpose of this article in order to draft of a model economic and environmental. Therefore, interventions to change the standard of public administration involving in increasing the degree of efficiency in the use of financial resources provide a change in paradigm of development that can no longer be exclusionary and harmful to the environment. The understanding of the meaning of social and economic development involves the mechanisms of distribution of the wealth generated in this context, the viability of the concept of sustainability will lead to changes in social behaviour (collective) and individual. The discussion about the behavior and planned and rational use of natural resources is central to the perpetuation of these resources for future generations.Sustentabilidade, modelo econômico, gerações futuras, Sustainability, economic model, future generations, Environmental Economics and Policy,

    VARIÁVEIS PARA COMPOR UM MODELO DE ANALISE SOBRE A COMPETITIVIDADE ECONÔMICA NO BRASIL

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    O presente artigo procura expor, de forma ampla os fatores que – na visão dos autores – são de importância cine qua non para a elaboração de indicadores que possam servir como guia para a elaboração de políticas publicas que ambicionem superar alguns dos gargalos presentes na economia brasileira. Estes obstáculos, na medida em que o PIB cresce, se tornam cada vez mais significantes para a forma com que o produto nacional compete no mercado mundial e/ou assegura seu lugar no mercado interno.-------------------------------------------This article tries expose, in the broad factors that - in view of the authors - are of importance cine qua non for the development of indicators which may serve as a guide for the formulation of public policies that wish overcome some of the bottlenecks in the Brazilian economy . These obstacles, in that GDP grows, they become increasingly significant for the way national product compete in the world market and / or ensures his place in the internal market.Competitividade, pesquisa e desenvolvimento, ensino e transporte, competitiveness, research and development, education and transportation, Financial Economics,

    Generation and Distribution of Quantum Oblivious Keys for Secure Multiparty Computation

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    The oblivious transfer primitive is sufficient to implement secure multiparty computation. However, secure multiparty computation based only on classical cryptography is severely limited by the security and efficiency of the oblivious transfer implementation. We present a method to efficiently and securely generate and distribute oblivious keys by exchanging qubits and by performing commitments using classical hash functions. With the presented hybrid approach, quantum and classical, we obtain a practical and high-speed oblivious transfer protocol, secure even against quantum computer attacks. The oblivious distributed keys allow implementing a fast and secure oblivious transfer protocol, which can pave the way for the widespread of applications based on secure multiparty computation.Comment: 11 pages, 5 figure

    Black jurema bark powder as new alternative material for treatment of water containing two toxic dyes / Emprego do pó da casca de jurema preta como uma nova alternativa para o tratamento de água contendo dois corantes tóxicos

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    Black jurema bark powder (BJBP) (Mimosa hostilis Benth) was studied for the removal of textile dyes Methylene Blue (MB) and Indigo Blue (IB) in water. The chemical and physical analysis of BJBP showed a heterogeneous surface with chemical groups capable to interact with MB and IB. The experiments were optimized for use of 1g of BJBP and stirring time of 3 minutes for IB, and 0.5g of BJBP and stirring time of 2 minutes for MB. The maximum adsorptive capacities for IB (115.21 mg/g) and MB (3.50 mg/g), obtained through the Langmuir Mathematical Model, were favorable for the use of BJBP as an adsorbent in water containing both dyes. The results obtained in this work suggest BJBP as a new alternative for the removal of IB and MB in aqueous medium. Besides, this work stimulates new studies to evaluate the BJBP adsorption capacity for other chemical pollutants

    Metabolite profile of Nectandra oppositifolia Nees & Mart. and assessment of antitrypanosomal activity of bioactive compounds through efficiency analyses

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    EtOH extracts from the leaves and twigs of Nectandra oppositifolia Nees & Mart. shown activity against amastigote forms of Trypanosoma cruzi. These extracts were subjected to successive liquid-liquid partitioning to afford bioactive CH2Cl2 fractions. UHPLC-TOF-HRMS/MS and molecular networking were used to obtain an overview of the phytochemical composition of these active fractions. Aiming to isolate the active compounds, both CH2Cl2 fractions were subjected to fractionation using medium pressure chromatography combined with semi-preparative HPLC-UV. Using this approach, twelve compounds (1-12) were isolated and identified by NMR and HRMS analysis. Several isolated compounds displayed activity against the amastigote forms of T. cruzi, especially ethyl protocatechuate (7) with EC50 value of 18.1 μM, similar to positive control benznidazole (18.7 μM). Considering the potential of compound 7, protocatechuic acid and its respective methyl (7a), n-propyl (7b), n-butyl (7c), n-pentyl (7d), and n-hexyl (7e) esters were tested. Regarding antitrypanosomal activity, protocatechuic acid and compound 7a were inactive, while 7b-7e exhibited EC50 values from 20.4 to 11.7 μM, without cytotoxicity to mammalian cells. These results suggest that lipophilicity and molecular complexity play an important role in the activity while efficiency analysis indicates that the natural compound 7 is a promising prototype for further modifications to obtain compounds effective against the intracellular forms of T. cruzi

    Socio-Environmental and Hematological Profile of Landfill Residents (Sao Jorge Landfill-Sao Paulo, Brazil)

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    We are experiencing an unprecedented urbanization process that, alongside physical, social and economic developments, has been having a significant impact on a population's health. Due to the increase in pollution, violence and poverty, our modern cities no longer ensure a good quality of life so they become unhealthy environments. This study aims to assess the effect of social, environmental and economic factors on the hematologic profile of residents of Santo Andre's landfill. In particular, we will assess the effect of social, economic, and environmental factors on current and potential disease markers obtained from hematological tests. The research method is the observational type, from a retrospective cohort, and by convenience sampling in Santo Andre in the Greater ABC (municipalities of Santo Andre, Sao Bernardo do Campo and Sao Caetano do Sul, southeast part of the Greater Sao Paulo Metropolitan Area, Brazil). The study determined a socio-environmental profile and the hematologic diseases screening related to a close location to the landfill. The disease manifests itself within a broad spectrum of symptoms that causes changes in blood count parameters. The objective of this work is to show that there is an association between social, environmental and economic factors and a variety of serious disease outcomes that may be detected from blood screening. A causal study of the effect of living near the landfill on these disease outcomes would be a very expensive and time-consuming study. This work we believe is sufficient for public health officials to consider policy and attempt remediation of the effects of living near a landfill.ABC Medical SchoolSchool of Health Technology Coimbra-IPC-Polytechnic Institute of Coimbra-PortugalDepartment of Environmental Health and Public HealthSEMASA-Sanitation and Insurance CentralABC MedSch, Environm Hlth Management Dept, BR-09060650 Santo Andre, SP, BrazilUniv Fed Sao Paulo, Inst Environm Chem & Pharmaceut Sci, Dept Biol Sci, BR-04060650 Diadema, SP, BrazilCoimbra Hlth Sch, EsTesC, Dept Environm Hlth Sci, P-3046854 Coimbra, PortugalBiological Sciences Department, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São Paulo (UNIFESP), Diadema 04060-650, SP, BrazilWeb of Scienc

    Amazonian plant natural products:perspectives for discovery of new antimalarial drug leads

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    Plasmodium falciparum and P. vivax malaria parasites are now resistant, or showing signs of resistance, to most drugs used in therapy. Novel chemical entities that exhibit new mechanisms of antiplasmodial action are needed. New antimalarials that block transmission of Plasmodium spp. from humans to Anopheles mosquito vectors are key to malaria eradication efforts. Although P. vivax causes a considerable number of malaria cases, its importance has for long been neglected. Vivax malaria can cause severe manifestations and death; hence there is a need for P. vivax-directed research. Plants used in traditional medicine, namely Artemisia annua and Cinchona spp. are the sources of the antimalarial natural products artemisinin and quinine, respectively. Based on these compounds, semi-synthetic artemisinin-derivatives and synthetic quinoline antimalarials have been developed and are the most important drugs in the current therapeutic arsenal for combating malaria. In the Amazon region, where P. vivax predominates, there is a local tradition of using plant-derived preparations to treat malaria. Here, we review the current P. falciparum and P. vivax drug-sensitivity assays, focusing on challenges and perspectives of drug discovery for P. vivax, including tests against hypnozoites. We also present the latest findings of our group and others on the antiplasmodial and antimalarial chemical components from Amazonian plants that may be potential drug leads against malaria

    Práticas corporais de aventura: uma experiência do PIBID educação física

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    O objetivo deste trabalho será o de apresentar as percepções de licenciandos em Educação Física sobre o processo de ensino e de aprendizagem do conteúdo Práticas Corporais de Aventura a alunos dos anos finais do Ensino Fundamental. Trata-se de um relato de experiência de uma proposta de sistematização das Práticas Corporais de Aventura elaborada e planejada de forma colaborativa entre dez estudantes de um curso de Licenciatura em Educação Física de uma Universidade Federal brasileira, bolsistas do Programa Institucional de Bolsas de Iniciação a Docência, e dois professores. A aplicação desse conteúdo se deu em turmas de 6º e 7º ano do Ensino Fundamental em uma escola pública. O resultado da experiência obtida nesse processo gerou três categorias: facilidades e dificuldades para o ensino, experiências com o ensino das práticas corporais de aventura e aprendizagem dos alunos

    Oxygen desaturation during the six-minute walk test in COPD patients

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    Objetivo: Avaliar o comportamento da curva de saturação de oxigênio durante o teste de caminhada de seis minutos (TC6) em pacientes com DPOC. Métodos: Incluímos 85 pacientes e todos realizaram espirometria, sendo classificados como portadores de DPOC moderada (DPOCm, n = 30) ou grave (DPOCg, n = 55). Todos os pacientes realizaram TC6 em um corredor de 27 m com monitoramento contínuo da SpO2 e FC por telemetria. A partir das curvas de SpO2, foram analisados os tempos para atingir a queda de 4% da SpO2, para atingir a SpO2 mínima (Tmin) e para a recuperação da SpO2 após o TC6 (TR). Foram calculadas as inclinações dessas curvas. Resultados: A média de idade nos grupos DPOCm e DPOCg foi de 62 ± 11 anos e 66 ± 10 anos, respectivamente. Todos os pacientes iniciaram o teste com SpO2 > 94%, nenhum recebeu suplementação de oxigênio durante o TC6, e não houve interrupções. A distância percorrida no TC6 não apresentou diferença significativa entre os grupos. Os menores valores da SpO2 ocorreram no grupo DPOCg. Não houve diferença no TR entre os grupos, e 71% e 63% dos pacientes nos grupos DPOCg e DPOCm, respectivamente, apresentaram queda de SpO2 ≥ 4% até o primeiro minuto. O VEF1% apresentou correlações significativas com ΔSpO2 (r = −0,398; p 94% in all of the patients; none received supplemental oxygen during the 6MWT; and none of the tests were interrupted. The six-minute walk distance did not differ significantly between the groups. The SpO2 values were lowest in the sevCOPD group. There was no difference between the groups regarding RT. In 71% and 63% of the sevCOPD and modCOPD group patients, respectively, a ≥ 4% decrease in SpO2 occurred within the first minute. We found that FEV1% correlated significantly with the ΔSpO2 (r = −0.398; p < 0.001), Tmin (r = −0.449; p < 0.001), and minimum SpO2 (r = 0.356; p < 0.005). Conclusions: In the sevCOPD group, in comparison with the modCOPD group, SpO2 was lower and the Tmin was greater, suggesting a worse prognosis in the former
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