Os obstáculos epistemológicos no ensino de ligações químicas

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As contribuições da formação continuada de professores para a qualificação do ensino de Ciências

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A pesquisa como estratégia inovadora no ensino de ligações químicas

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Comprometimento organizacional e qualidade de vida no trabalho para pessoas com e sem deficiência Compromiso con la organización y calidad de vida laboral de personas con y sin discapacidad Organizational commitment and quality of working life for people with and without disability

Esta pesquisa buscou verificar se o comprometimento organizacional e a satisfação com aspectos relacionados à qualidade de vida no trabalho apresentam resultados significativamente diferentes entre pessoas com (PcD) e sem deficiência (PsD). Participaram do estudo 150 trabalhadores, dos quais 75 com e 75 sem deficiência. Os grupos foram emparelhados conforme a função desempenhada e a organização de trabalho. Os instrumentos utilizados foram: Questionário de Comprometimento e de Qualidade de Vida no Trabalho. As respostas foram analisadas quantitativamente. Os resultados permitiram verificar que as PcD têm resultados de satisfação com fatores relacionados ao contexto de trabalho e de comprometimento similares aos das demais pessoas. No entanto, quando possuir uma deficiência se associa a condições sociais de desvantagem (menor renda familiar e primeiro emprego) e ao fato de ser do sexo masculino, as pessoas com deficiência tendem a ter um maior comprometimento instrumental.<br>Esta investigación buscó verificar si el compromiso con la organización y la satisfacción con aspectos relacionados con la calidad de la vida laboral presentan resultados diferentes entre personas con y sin discapacidad. Participaron 150 trabajadores, 75 con y 75 sin discapacidad. Los grupos fueron emparejados de acuerdo con la función desempeñada y la organización del trabajo. Los instrumentos utilizados fueron: Cuestionario de Compromiso y de Calidad de Vida Laboral. Las respuestas fueron analizadas por método cuantitativo. Los resultados permitieron verificar que las personas con discapacidad tienen resultados de satisfacción con factores relacionados al contexto laboral y de compromiso similares a las demás personas. Sin embargo, cuando la discapacidad se asocia a condiciones de desventaja social (menor ingreso y primer empleo) y al hecho de ser hombre, las personas con discapacidad tienden a tener un mayor compromiso instrumental.<br>The aim of this research was to verify if organizational commitment and satisfaction with aspects related to quality of working life were different between people with and without disabilities. The sample was constituted of 150 workers, 75 with and 75 without some disability. The groups were paired in function and work organization. The tools used were: Questionnaire about Organizational Commitment and Questionnaire about Satisfaction with Quality of Working Life. The answers were analyzed by quantitative method. The statistical analysis of organizational commitment and satisfaction did not present difference between people with and without disability. The results show that Satisfaction with Quality of working life and commitment are similar between people with and without disability. However, when the disability is associated with conditions of social disadvantage (lower income and first job) and when people with disabilities are males, these people tend to have higher instrumental commitment

Association between Contact with Nature and Anxiety, Stress and Depression Symptoms: A Primary Survey in Brazil

Mental health benefits have been linked to human interaction with nature. However, most studies have been carried out in developed countries, limiting the generalizability of empirical findings to other parts of the world. To address this gap, this study was conducted in Brazil. The objective of the study was to assess whether the frequency of contact with nature affects the occurrence of anxiety, stress, and depression. Data were collected between June and July 2022 through an online survey (n = 1186, 1 − α = 0.95, p = 0.05, 1 − β = 0.85, rho = 0.1). Thus, the public online survey made it possible to carry out voluntary response sampling suitable for an exploratory study, with the purpose of an initial understanding of an under-researched population. First, a logistic regression was performed for quantifying the association between contact with nature and mental symptoms. In addition, three groups of people having different frequencies (low, medium, and high) of contact with nature and a reference group, comprised of those who reported no contact, were compared using Kruskal–Wallis and Dwass–Steel–Chritchlow–Fligner tests. This study employs a cross-sectional design and relies on retrospective recall. As a result, the research hypothesis was confirmed. People who very rarely have contact with nature had a 97.95% probability of moderate occurrence of stress, which decreases to 20.98% for people who have contact with nature frequently. Furthermore, in the same comparison, the probability of occurrence was 3.6 times lower for anxiety and 4.8 times lower for depression. In conclusion, the evidence indicates that the greater the frequency of contact with nature, the lower the occurrence of stress, anxiety, and depression symptoms. Nevertheless, the benefits of this contact were significant only when its frequency was moderate (about once or twice a week) or higher

Determination of the physiologic parameters, thermal gradient and index of heat tolerance in different breeds of goats

ABSTRACT. Medeiros L.F.D., Rodrigues V.C., Vieira D.H., Souza S.L.G. de, Neto O.C., Oliveira C.A., Silva L. de A. da S., Figueiredo N. de & Azevedo S. F. de. [Determination of the physiologic parameters, thermal gradient and index of heat tolerance in different breeds of goats.] Determinação dos parâ- metros fisiológicos, gradiente térmico e índice de tolerância ao calor em diferentes raças de caprinos. Revista Brasileira de Medicina Veterinária, 37(4):275-285, 2015. Departamento de Reprodução e Avaliação Animal, Instituto de Zootecnia, Universidade Federal Rural do Rio de Janeiro, BR 465 Km 7, Seropédica, RJ 23851-970, Brasil. E-mail: [email protected] The aim of this study was to evaluate the adaptation of different exotic breeds of goats through the physiologic responses of rectal temperature (RT), superficial temperature (ST), respiratory frequency (RF), cardiac frequency (CF), and the gradient between RT and ST, and the ST and air temperature (AT) and the heat tolerance index (HTI) by Baccari Junior, under the conditions of hot and humid climate of the Baixada Fluminense, South East Region of Brazil. Forty eight goats were used, being twelve animals of each breed: Saanen, Alpine (european origin), Anglo-nubian and Boer (african origin), between 24 and 30 months of age with medium weight of 50 kg, maintained in intensive system. There were significant difference in the RT, ST, RF and CF between breeds, by morning (P<0.05) and afternoon (P<0.01). The RT, ST, RF and CF of the animals range significant (P<0.01) between the shifts (morning and afternoon) and days, with significant interaction (P<0.01) between morning and afternoon and days, by consequence of the variation of AT. It was found the RT, ST, RF and CF of Saanen and Alpine goats were more higher (P<0.05) by morning (P<0.01) and by afternoon in comparison with Anglo-nubian and Boer goats. There was significant effect (P<0.05) between shifts (morning and afternoon) and breed for the termic gradient (RT-ST). The african breeds average showed more higher in both shifts in comparison as the european breeds. There were significant difference (P<0.05) between breeds for termal gradient (ST-AT). By the application of HTI, the Anglo-nubian and Boer breeds showed the HT higher (9.63 and 9.65) than the Saanen and Alpine breeds (8.89 and 8.91), respectively. The breeds of african origin (Anglo-nubian and Boer) showed more heat tolerance than the breeds of european origin (Saanen and Alpine) by HT. The breeds of european origin reveal more sensitive to termal stress. The african breeds showed more capacity for maintained the homeotermy. So, the use of Anglo-nubian and Boer breeds to increase the goats productivity under the conditions of hot and humid climate of the Baixada Fluminense, Rio de Janeiro State, can be advised

Sustained reduction of the dengue vector population resulting from an integrated control strategy applied in two Brazilian cities

Submitted by Kamylla Nascimento ([email protected]) on 2017-12-12T14:04:45Z No. of bitstreams: 1 art. Sustained Reduction - regis.pdf: 1717708 bytes, checksum: 17432badc1f472a47a0d00ecf62d4546 (MD5)Approved for entry into archive by Kamylla Nascimento ([email protected]) on 2017-12-13T11:24:31Z (GMT) No. of bitstreams: 1 art. Sustained Reduction - regis.pdf: 1717708 bytes, checksum: 17432badc1f472a47a0d00ecf62d4546 (MD5)Made available in DSpace on 2017-12-13T11:24:31Z (GMT). No. of bitstreams: 1 art. Sustained Reduction - regis.pdf: 1717708 bytes, checksum: 17432badc1f472a47a0d00ecf62d4546 (MD5) Previous issue date: 2013Este trabalho recebeu apoio financeiro de bolsas do CNPq, http://www.cnpq.br (PQ-301277 / 2005-2 e APQ-479214 / 2010-7); FACEPE, http://www.facepe.br (APQ-0692-2.13 / 08); e PDTSP-FIOCRUZ, http://www.fiocruz.br (RDVE-03). O Departamento de Saúde do Estado de Pernambuco ofereceu transporte terrestre para pessoas e materiais relacionados ao projeto de Recife para Santa Cruz do Capibaribe e Ipojuca, durante 2008-2011. Os financiadores não tiveram papel no desenho do estudo, na coleta e análise de dados, na decisão de publicação ou na elaboração do manuscrito.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Entomologia. Recife, PE, Brasil.Secretaria Estadual de Saúde. Recife, PE, Brazil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Entomologia. Recife, PE, Brasil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Entomologia. Recife, PE, Brasil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Saúde Coletiva. Recife, PE, Brasil.Secretaria Municipal de Saúde. Santa Cruz do Capibaribe, PE, Brazil.Secretaria Municipal de Saúde. Ipojuca, PE, Brazil.Instituto Nacional de Pesquisas Espaciais-INPE. Divisão de Processamento de Imagens. São José dos Campos, SP, Brazil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Entomologia. Recife, PE, Brasil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Entomologia. Recife, PE, Brasil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Parasitologia. Recife, PE, Brasil.Universidade Federal de Pernambuco. Departameto de Eletrônica e Sistemas. Recife, PE, Brazil.Universidade Federal de Pernambuco. Departameto de Eletrônica e Sistemas. Recife, PE, Brazil.Universidade Federal do Paraná. Departameto de Estatística. Curitiba, PR, Brazil.Universidade Federal do Paraná. Departameto de Estatística. Curitiba, PR, Brazil.Instituto Nacional de Pesquisas Espaciais-INPE. Centro de Ciência do Sistema Terrestre. São José dos Campos, SP, Brazil.Fundaçao Oswaldo Cruz. Rio de Janeiro, RJ, Brazil.Fundaçao Oswaldo Cruz. Instituto Aggeu Magalhães. Departamento de Virologia. Recife, PE, Brasil.Aedes aegypti has developed evolution-driven adaptations for surviving in the domestic human habitat. Several trap models have been designed considering these strategies and tested for monitoring this efficient vector of Dengue. Here, we report a real-scale evaluation of a system for monitoring and controlling mosquito populations based on egg sampling coupled with geographic information systems technology. The SMCP-Aedes, a system based on open technology and open data standards, was set up from March/2008 to October/2011 as a pilot trial in two sites of Pernambuco -Brazil: Ipojuca (10,000 residents) and Santa Cruz (83,000), in a joint effort of health authorities and staff, and a network of scientists providing scientific support. A widespread infestation by Aedes was found in both sites in 2008-2009, with 96.8%-100% trap positivity. Egg densities were markedly higher in SCC than in Ipojuca. A 90% decrease in egg density was recorded in SCC after two years of sustained control pressure imposed by suppression of >7,500,000 eggs and >3,200 adults, plus larval control by adding fishes to cisterns. In Ipojuca, 1.1 million mosquito eggs were suppressed and a 77% reduction in egg density was achieved. This study aimed at assessing the applicability of a system using GIS and spatial statistic analysis tools for quantitative assessment of mosquito populations. It also provided useful information on the requirements for reducing well-established mosquito populations. Results from two cities led us to conclude that the success in markedly reducing an Aedes population required the appropriate choice of control measures for sustained mass elimination guided by a user-friendly mosquito surveillance system. The system was able to support interventional decisions and to assess the program's success. Additionally, it created a stimulating environment for health staff and residents, which had a positive impact on their commitment to the dengue control program