75 research outputs found
A mÃdia na transição democrática brasileira
O texto trata dos caminhos percorridos pela mÃdia na fase de transição do regime militar autoritário para a democracia no Brasil. Procura indicar como a mÃdia participou da luta em favor da volta à democracia, suas ações e estratégias para denunciar a censura e a opressão dos militares. Mas a atuação da mÃdia, nesse processo brasileiro, só recentemente tornou-se objeto de estudo dos historiadores e cientistas sociais. Algumas explicações para essa ausência são apresentadas no texto.The text deals with the paths followed by the media during the transition from the authoritarian military regime to democracy in Brazil. It seeks to describe how the media took part in the struggle for a return to democracy, its actions and strategies for denouncing censorship and military oppression. But the behaviour of the media in this process in Brazil has only recently been examined by historians and social scientists. A number of explanations for this omission are presented in the text.Ce texte aborde les chemins parcourus par les médias durant la phase de transition du régime militaire autoritaire vers la démocratie au Brésil. Il s’efforce de montrer comment les médias ont participé à la lutte pour le retour de la démocratie, leurs actions et leurs stratégies pour dénoncer la censure et l’oppression des militaires. Mais l’intérêt des historiens et des sociologues pour le rôle des médias dans ce processus est très récent: l’article en présente quelques explications.El texto trata de los caminos recorridos por los medios de comunicación en la fase de transición del régimen militar autoritario a la democracia en Brasil. Intenta indicar como los medios de comunicación participaron en la lucha a favor de la vuelta a la democracia, sus acciones y estrategias para denunciar la censura y la opresión de los militares. Pero la actuación de los medios, en este proceso brasileño, solo recientemente se ha convertido en objeto de estudio de los historiadores y cientÃficos sociales. Algunas explicaciones para esa ausencia se presentan en el texto
O jornalismo carioca em debate
As mudanças que ocorreram no jornalismo do Rio de Janeiro nos anos 1950 é um tema que tem muitos significados. Não há dúvida de que a autora do livro enfrentou com grande competência o desafio de analisá-los
Environmental implications of CO2 absorption by pervious concrete pavement in urban roads
This research deals with a new material, made from conventional pervious concrete, but with the addition of two
components in its mixture, calcium hydroxide (Ca(OH)2), to improve its carbon dioxide (CO2) absorption properties from
the atmosphere, and Scrap Tyre Tubes (STT), a rubber waste from used tyres of vehicle (motorcycles and cars), which
makes the new material lighter and contributes to urban sustainability by reusing industrial waste automotive.
Conventional pervious concrete has a main property that benefits the environment, which is natural from its porous
structure, which is the permeability of the urban pavement, which allows the drainage of rainwater from the urban
pavement to the underground, contributing to the reduction of flooding in cities through the infiltration of water into the
groundwater. This research sought to improve conventional pervious concrete through additives in its mix to create a
new porous material, more efficient at sequestering CO2 from the atmosphere, lighter and reusing rubber waste from
used tyres. The porosity of conventional pervious concrete makes this material ideal for carbon dioxide (CO2)
sequestration due to the ease of CO2 penetration into its internal structure pore network, which interacts with cement
and other additives, which by means of a chemical reaction called carbonation, absorbs CO2 from the atmosphere to
form calcium carbonate (CaCO3) in its internal structure, which is an excellent environmental benefit for the materials
used in the manufacture of urban pavements, as it makes the urban pavement contribute directly for air quality and for
the control of pollution emanating from motor vehicles traveling on urban roads. In this investigation were performed
laboratory tests of compressive strength and permeability, because these are the most important properties of
conventional permeable concrete that make this building material a porous pavement that can be used on urban
roadways, these properties are essential for the new pervious concrete material, were also CO2 volume monitoring in
contact with specimens of conventional pervious concrete and specimens of new material, because this environmental
benefit of CO2 absorption from the atmosphere is very important for the control of air quality in large metropolis, which
have high levels of pollution that affect the life of urban citizens, causing respiratory diseases in old and children. In this
research, 40 conventional pervious concrete were manufactured with limestone aggregate, to serve as a control group
in the statistical analysis and 10 specimens of the new material of pervious concrete also were manufactured with
proportions of 1:0.5:4 (cement:Ca(OH)2:pebble), factor water/cement (w/c) of 0.30, with 5% STT in mix, because the
proportion of SST in the mix defines how much waste tyre waste can be reused in the manufacture of this new material.
The STT is a non-biodegradable material that occupies a lot of urban space, so it harms the environment and the quality
of life of the urban citizen, an alternative to reuse STT in the mix of new pervious concrete material is a very important
sustainable solution to modern cities around the world due to the progressive annual increase of this waste tire rubber
from automotive industries. In this research the results of the tests served to compare compression and permeability, as
well as monitoring the absorption of CO2 from the atmosphere of the different groups. The results of the compressive
strength and permeability tests and CO2 volume monitoring were analyzed statistically for normality and the t-Student
test. This analysis showed that the improvement of environmental properties harms the physical properties of the new
material with compressive strength of 1.25 MPa, permeability of 7.00 mm/s and 5% of STT in the mix of new material of
the pervious concrete, however, this new permeable concrete material can be used in non-structural works, such as garden pavement, pedestrian sidewalks, finishes to beautify buildings and condominium facades, etc., due to the
environmental benefits it produces and cannot be neglected.info:eu-repo/semantics/publishedVersio
Comparative statistical analysis new urban road pavement versus conventional pavement of pervious concrete
This research proposes a variation to pervious concrete pavement, in which a mixture of cement, aggregates and water includes calcium hydroxide additive (Ca(OH)2). This new approach focuses on two main environmental functions: increased permeability of urban soil favoring a decrease of total and peak runoff and resulting reduction of flood occurrence in the cities, and CO2 absorption from the atmosphere, contributing to reduction of the negative impacts caused by the observed increased greenhouse effect in the cities. A series of 40 conventional pervious concrete pavement samples and 30 specimens of the proposed urban pavement were tested in the laboratory for permeability, density, porosity and compression resistance, and monitored for CO2 absorption. Results show that there is an environmental benefit of CO2 sequestration when adding Ca(OH)2 to pervious concrete, but there is also a decrease in its compressive strength and permeability.info:eu-repo/semantics/publishedVersio
Comparative Statistical Analysis New Urban Road Pavement Versus Conventional Pavement of Pervious Concrete
This research proposes a variation to pervious concrete pavement, in which a mixture of cement, aggregates and water includes calcium hydroxide additive (Ca(OH)2). This new approach focuses on two main environmental functions: increased permeability of urban soil favoring a decrease of total and peak runoff and resulting reduction of flood occurrence in the cities, and CO2 absorption from the atmosphere, contributing to reduction of the negative impacts caused by the observed increased greenhouse effect in the cities. A series of 40 conventional pervious concrete pavement samples and 30 specimens of the proposed urban pavement were tested in the laboratory for permeability, density, porosity and compression resistance, and monitored for CO2 absorption. Results show that there is an environmental benefit of CO2 sequestration when adding Ca(OH)2 to pervious concrete, but there is also a decrease in its compressive strength and permeability.info:eu-repo/semantics/publishedVersio
Chronic inflammatory polyneuropathy associated with ulcerative colitis: a reported case in literature
AbstractBackground: Peripheral neuropathy is known to be related to inflammatory bowel disease and it is one of the most frequently reported neurologic complications. Various studies have found peripheral nervous system complications, rather than central nervous system involvement, to be predominant. In the literature, there are a few cases of inflammatory polyneuropathy developed in the course of ulcerative colitis : 5 cases of Guillain-Barré syndrome, one case of chronic inflammatory demyelinating polyneuropathy, 10 cases of neuropathy and one case of perineuritis. Case presentation: We describe a case of chronic inflammatory polyneuropathy associated with ulcerative colitis. Conclusion: Peripheral neuropathy is not a common manifestation of IBD, highlighting the need for careful exclusion of other causes of neuropathy when both conditions are encountered in clinical practice. Â
PREVALENCE AND FACTORS ASSOCIATED WITH DEPRESSION IN MEDICAL STUDENTS
Introduction: depression, besides causing great psychological distress, may lead to poor academic performance and social relationships. Objective: to examine the prevalence of depressive symptoms in medical students from a northeastern region of Brazil. Methods: the population comprised 1024 students from first to twelfth semesters of two medical schools in Cariri, Ceará, Brazil. We used the questionnaire on sociodemographic characteristics and the Beck Depression Inventory II version. Results: the prevalence in this population for the diagnosis of depression was 28.8%.652 (63.7%) complied with all protocols to stay in research. After logistic regression, had a negative impact on studentsmental health: female Odds Ratio adjusted (ORa) (95% CI): 1.83 (1.19 to 2.82), reasonable physical health ORa (95% CI): 3.15 (2 0.09 to 4, 73), uncertainty about professional future ORa (95% CI): 2.97 (1.65 to 5.34), desire to change course ORa (95% CI): 2.51 (1.63 to 3.86), good social relationship but without participation in social activities ORa (95% CI): 1.96 (1.27 to 3.04), relationship difficulties ORa (95% CI): 11.40 (4.32 to 30.14) and rare leisure activities (95% CI): 2.45 (1.49 to 4.04) or eventual leisure activities ORa (95% CI): 3.04 (1.70 to 5.42 ). Conclusion: there was a high prevalence of depression among medical students in this region. Female, reasonable physical health, uncertainty over future career, desire to change course, do not participate in social activities and / or difficulties in relationships, sporadic or rare leisure activity were associated with increased risk of developing depressive symptoms
Associação entre internações por condições sensÃveis e qualidade da atenção primária
OBJECTIVE: To analyze the association between municipal rates of ambulatory care sensitive conditions (ACSC) hospitalization and the quality of primary health care (PHC), socioeconomic, and demographic variables and those related to local characteristics of the health system from 2010 to 2019. METHOD: Ecological time series study in Brazilian municipalities analyzing the correlation of ACSC hospitalization rates with PHC quality measured by the three cycles of the Primary Care Access and Program for improving primary care access and quality (PMAQ-AB). The study included municipalities whose teams participated in 80% or more of at least two PMAQ-AB cycles. The correlation between standardized ACSC hospitalization rates and PHC quality and other variables was analyzed. Spearman’s test was used between the response variable and numerical explanatory variables. Generalized equations estimation was used as a multivariate model associating ACSC hospitalization rates with the other variables over the years. RESULTS: A total of 3,500 municipalities were included in the models. The quality of PHC (PMAQ-AB score) showed an inverse association with the variation in ACSC hospitalization rates. Hospitalization rates fell by -2% per year every ten-point increase in the PMAQ-AB score, adjusted by the remaining variables. A one-unit increase in the beds per 1,000 inhabitants variable had an impact of approximately +6.4% on ACSC hospitalization rates. Regarding population size, larger municipalities had lower ACSC hospitalization rates. Increased PHC coverage and lower socioeconomic inequality were also associated with the reduction in hospitalizations. CONCLUSIONS: The reduction in ACSC hospitalization rates over time was associated with an increase in the quality of PHC. It was also associated with a reduction in the number of hospital beds and municipalities with better socioeconomic indicators.OBJETIVO: Analisar a associação entre taxas municipais de internações por condições sensÃveis à atenção primária (ICSAP), com a qualidade da atenção primária à saúde (APS), variáveis socioeconômicas, demográficas e relacionadas a caracterÃsticas locais do sistema de saúde, de 2010 a 2019. MÉTODOS: Estudo ecológico de séries temporais nos municÃpios brasileiros analisando a correlação das taxas de ICSAP, com a qualidade da APS medida pelos três ciclos do Programa de Melhoria do Acesso e da Qualidade da Atenção Básica (PMAQ-AB). Foram incluÃdos municÃpios que participaram com 80% ou mais de suas equipes em, ao menos, dois ciclos do PMAQ-AB. Foi analisada a correlação entre as taxas de ICSAP padronizadas com a qualidade da APS e demais variáveis. Empregou-se o teste de Spearman entre a variável resposta e as variáveis explicativas numéricas. Foi usado o generalized equations estimating como modelo multivariado associando as taxas de ICSAP e as demais variáveis ao longo dos anos. RESULTADOS: Foram incluÃdos 3.500 municÃpios nos modelos. A qualidade da APS (nota do PMAQ-AB) apresentou associação inversa com a variação das taxas de ICSAP. As taxas de internação tiveram queda de -2% ao ano a cada aumento de dez pontos na nota do PMAQAB, ajustado pelas demais variáveis. O aumento de uma unidade na variável leitos por mil habitantes impactou em uma elevação de aproximadamente +6,4% nas taxas de ICSAP. Quanto ao porte populacional, municÃpios maiores tiveram menores taxas de ICSAP. Também se associaram à redução das internações o aumento da cobertura da APS e a menor desigualdade socioeconômica. CONCLUSÕES: A redução das taxas de ICSAP ao longo do tempo mostrou-se associada com o aumento da qualidade da APS. Além disso, esteve associada com diminuição do número de leitos hospitalares e a municÃpios com melhores indicadores socioeconômicos
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