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Search Results: 1 - 10 of 349273 matches for " Astrogildo Fernandes Silva Júnior "
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A ciência da história e o ensino de história: aproxima es e distanciamentos
Astrogildo Fernandes Silva Júnior
OPSIS : Revista do Departamento de História e Ciências Sociais , 2011,
Abstract: This study has the objective to reflect about the relations between History science and History teaching. In this context, some questions are brought about: Which are the perspectives to put together History science and History teaching? What does the curricular proposal says about History teaching? Searching for answers to these questions, Rusen, Deleuze and Guatarri should be considered. / Este trabalho tem como objetivo refletir sobre a rela o entre a ciência da História e o ensino de História. Nesse sentido, algumas quest es tornaram-se recorrentes: Quais as perspectivas de aproxima o da ciência da História com o ensino de História? O que diz a proposta curricular para o ensino de História? Na procura de respostas às referidas inquieta es, podem ser consideradas importantes as obras de Rusen (2007), e Deleuze e Guatarri (1995).
O ENSINO DE HISTóRIA EM ESCOLAS NO MEIO RURAL BRASILEIRO
Astrogildo Fernandes Silva Júnior,Selva Guimar?es Fonseca
Eccos Revista Científica , 2010,
Abstract: In this text are shown the results from the Master thesis "Knowledge and practices of the History teaching in rural schools (a study performed in the City of Araguari, MG, Brazil), developed during Master in Education in the Pos-graduate program in Education from Universidade Federal de Uberlandia (PPGE/UFU), articulated to the research project "Teacher formation, knowledge and practice of History teaching" supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico -CNPq. Here the objectives were to characterize history teaching in rural schools education in the last decades and to analyze the knowledge and curricular practices from the History teaching in rural schools. We concluded that the History teaching and education in the Brazilian rural area underwent transformation in the last decades, and the knowledge and practices are built during the education experience in schools that are multicultural spaces, where distinct subjects play.
Biological properties of medicinal plants: a review of their antimicrobial activity
Silva, NCC;Fernandes Júnior, A;
Journal of Venomous Animals and Toxins including Tropical Diseases , 2010, DOI: 10.1590/S1678-91992010000300006
Abstract: plants have been used for thousands of years to flavor and conserve food, to treat health disorders and to prevent diseases including epidemics. the knowledge of their healing properties has been transmitted over the centuries within and among human communities. active compounds produced during secondary vegetal metabolism are usually responsible for the biological properties of some plant species used throughout the globe for various purposes, including treatment of infectious diseases. currently, data on the antimicrobial activity of numerous plants, so far considered empirical, have been scientifically confirmed, concomitantly with the increasing number of reports on pathogenic microorganisms resistant to antimicrobials. products derived from plants may potentially control microbial growth in diverse situations and in the specific case of disease treatment, numerous studies have aimed to describe the chemical composition of these plant antimicrobials and the mechanisms involved in microbial growth inhibition, either separately or associated with conventional antimicrobials. thus, in the present work, medicinal plants with emphasis on their antimicrobial properties are reviewed.
Reflex es sobre as primeiras organiza es patronais rurais no estado do Pará
Aluisio Fernandes da Silva Júnior
Revista IDeAS : Interfaces em Desenvolvimento, Agricultura e Sociedade , 2009,
Abstract: Este texto apresenta, de forma exploratória e descritiva, as primeiras organiza- es patronais rurais do estado do Pará a partir de levantamentos realizados na Federa o de Agricultura e Pecuária do Estado do Pará - Faepa. Em fun o das dificuldades encontradas visando à elabora o de um pensamento cronológico, congruente e fidedigno, outras fontes de pesquisas foram consultadas. A evolu- o e a expans o dessas organiza es constituem elementos importantes para a compreens o da atual configura o espacial desta entidade, bem como proporcionam o entendimento da complicada rede de rela es que envolvem diferentes personagens presentes no espa o rural paraense através das mudan as que geraram contradi es, conflitos e violências.
Tipos de riesgos percibidos en el proceso de compra de billetes aereos Types of Risk Perceived in the Process of Buying Online Airline Tickets.
Guthemberg Fernandes da Silva Júnior,Kleber Fossati Figueiredo,Claudia Affonso Silva Araujo
Estudios y perspectivas en turismo , 2013,
Abstract: Internet ha cambiado la forma en que los consumidores compran los productos de viajes, mediante la sustitución de las agencias convencionales por los sitios web. Sin embargo, muchos clientes todavía perciben riesgos en las compras realizadas a través de Internet. Así, el objetivo de este estudio es evaluar si la percepción de los diferentes tipos de riesgo (financiero, de desempe o, social, físico, psicológico y pérdida de tiempo) varía en función del canal de venta utilizado, o a lo largo de las diferentes etapas del proceso de compra. Se realizó una encuesta en Internet, generando 184 cuestionarios válidos. Los resultados muestran que los consumidores perciben un mayor riesgo financiero en la compra a través de Internet y un menor riesgo físico y pérdida de tiempo en ese canal a la hora de comprar en las agencias convencionales. Además, se observó que los compradores de billetes de avión a través de Internet perciben un menor riesgo en as etapas de búsqueda de información y evaluación de alternativas en relación con el canal convencional y que esta diferencia no existe en la etapa de la decisión de compra. The Internet has changed the way consumers buy travel products by replacing the conventional agency for websites. However, many customers still perceive risks in shopping over the Internet. Therefore, the aim of this study is to assess whether the perception of different types of risk (financial, social, performance, physical, psychological and loss of time) varies depending on the sales channel used, or along the different stages of purchase. It was conducted an Internet survey, yielding 184 valid questionnaires. The results show that consumers perceive greater financial risk in buying over the Internet and less physical risk and loss of time on that channel when compared with conventional agencies. It was also noted that buyers of airline tickets over the Internet perceive less risk in the early stages of information search and evaluation of alternatives relative to the conventional channel and that this difference does not exist on the stage of the buying decision.
Efeito de produtos químicos sobre a mancha bacteriana (Xanthomonas perforans) e na ativa o de proteínas relacionadas à patogênese em tomateiro Effect of chemicals on the bacterial spot (Xanthomonas perforans) and the activation of pathogenesis-related proteins in tomato
Adriana Terumi Itako,Jo?o Batista Tolentino Júnior,Tadeu A. Fernandes da Silva Júnior,José Marcelo Soman
IDESIA , 2012,
Abstract: O presente trabalho teve por objetivo avaliar a a o de fungicidas e antibiótico no controle da mancha bacteriana (Xanthomonas perforans) em tomate e na ativa o de proteínas relacionada à patogênese. Para avalia o da severidade da doen a foi utilizada o híbrido de tomate "AP529". Os tratamentos consistiram da pulveriza o com acibenzolar-S-metil, fluazinam, piraclostrobina, piraclostrobina + methiran, oxicloreto de cobre, oxicloreto de cobre + mancozeb e oxitetraciclina, além de uma testemunha inoculada e uma testemunha n o inoculada. Após três dias do tratamento, as plantas foram inoculadas com a bactéria X. perforans (10(6) UFC/mL). Discos foliares foram coletadas para avalia o das enzimas peroxidase, polifenoloxidase, β-1,3 glucanase, fenilalanina amonia liase e protease. Com os dados da severidade foi calculada a área Abaixo da Curva de Progresso da Doen a (AACPD). Todos os tratamentos apresentaram redu o da AACPD em rela o à testemunha inoculada. Os fungicidas acibenzolar-S-metil, piraclostrobina e piraclostrobina + methiran tiveram resultados mais satisfatórios na redu o da severidade da mancha bacteriana em tomateiro. Os produtos à base de piraclostrobina juntamente com acibenzolar-S-metil induziram as atividades enzimáticas de peroxidase, polifenoloxidase e β-1,3 glucanase, evidenciando que estes produtos podem estar relacionados à indu o de resistência à mancha bactéria em plantas de tomateiro. The present study aims to evaluate the effect of fungicides and antibiotics to control bacterial spot (Xanthomonas perforans) in tomato, and the activation of pathogenesis-related proteins. Hybrid tomato AP 529 was used to assess the severity of disease. The treatments consisted of spraying with acibenzolar-S-methyl, fluazinam, pyraclostrobin, pyraclostrobin + methiran, copper oxychloride, copper oxychloride and mancozeb + oxytetracycline, and inoculated and non-inoculated controls. After three days of treatment, all plants were inoculated with X. perforans (10(6) CFU / mL). Leaf discs were collected for assessment of peroxidase, polyphenol oxidase, β-1,3 glucanase, phenylalanine ammonia lyase and protease. The area under the disease progress curve (AUDPC) was calculated with the data of severity. All treatments had reduced AUDPC compared to the inoculated control. Fungicides acibenzolar-S-methyl, pyraclostrobin, and pyraclostrobin + methiran had more satisfactory results in reducing the severity of bacterial spot on tomato. The products based on pyraclostrobin together with acibenzolar-S-methyl induced enzymatic activities of peroxidase, polyphen
Efeito da qualidade da água de irriga??o sobre atributos hídricos de um Neossolo
Silva, Edison Fernandes da;Assis Júnior, Raimundo Nonato de;Sousa, José Ivo Gon?alves;
Revista Brasileira de Ciência do Solo , 2005, DOI: 10.1590/S0100-06832005000300009
Abstract: the influence of the salt content of two contrasting water sources (river and shallow well) on the hydraulic attributes of a clay loam fluvic inceptisol were tested. the experiment was carried out in 2000/2001 agricultural year on a 5,000 m2 plantation of musa sp banana, cultivar pacovan. it consisted of a 2 x 3 factorial arrangement of two water sources and three irrigation levels (l1, l2 and l3), applied via microsprinkling. results showed that the different irrigation levels and water quality did not influence the hydraulic conductivity significantly. soil water retention curves presented variations in the moisture content retained below field capacity during the dry season, while differences were observed in the tensions above field capacity during the rainy season. the predominance of silt and clay combined with the expansion and contraction cycles of the investigated soil probably determined the expression of the evaluated hydraulic properties since the levels of the electrolyte concentration and the soil sodium adsorption ratio (sar) were not high enough to influence the analyzed variables.
Dieta de Micoureus demerarae (Thomas) (Mammalia, Didelphidae) associada às florestas contíguas de mangue e terra firme em Bragan?a, Pará, Brasil
Fernandes, Marcus E. B.;Andrade, Fernanda A. G.;Silva Júnior, José de S. e;
Revista Brasileira de Zoologia , 2006, DOI: 10.1590/S0101-81752006000400015
Abstract: the diet of micoureus demerarae (thomas, 1905) was studied in mangrove and terra firme stands by using stomachal and faecal samples. the number of captured individuals was inversely proportional to availability of fruits and insects, being coleoptera and hemiptera the most consumed arthropod orders and passifloraceae and arecaceae the most ingested fruits. thus, either fruits variability or their high yield during the dry season seem to explain the increase of captured animals in the terra firme stands, where they originally come from. the food items suggest that this species has an omnivorous diet, independently of the seasonality or distribution of available resources.
Efeito da aplica??o de lodo de esgoto na severidade da murcha-de-curtobacterium em feijoeiro
Rodrigues, Ronaldo Bueno;Silva Júnior, Tadeu Ant?nio Fernandes da;Maringoni, Antonio Carlos;
Summa Phytopathologica , 2006, DOI: 10.1590/S0100-54052006000100013
Abstract: this work was aimed at evaluating the effect of different sewage sludge concentrations (ss) on the reduction of the severity of curtobacterium wilt in bean plants (pérola cultivar), and on plant development (dry mass of the above-ground part of plants), in two assays under greenhouse conditions. in the first assay, ss doses of 0, 2.5, 5.0, 7.5, and 10% were used. for the second assay, ss doses were 0, 0.5, 1.0, 1.5, 2.0, and 2.5%, incorporated in soil, with previously corrected ph and added with chemical fertilizers at the rate recommended for the crop. plants that had not been inoculated with the pathogen were maintained in both assays. no efficacy was verified for the different ss doses studied in the assays on the reduction of disease severity symptoms, as well as on dry mass of inoculated plants. concentrations of ss incorporated to the substrate higher than 5% were toxic to bean plants, reducing dry mass of plants.
Detec??o de Xanthomonas axonopodis pv. phaseoli em sementes de feijoeiro provenientes do estado do Paraná, Brasil
Torres, Jo?o Pereira;Silva Júnior, Tadeu Ant?nio Fernandes da;Maringoni, Antonio Carlos;
Summa Phytopathologica , 2009, DOI: 10.1590/S0100-54052009000200010
Abstract: the common bacterial blight of bean, caused by xanthomonas effective means of survival and dissemination of the xap. the health axonopodis pv. phaseoli (xap), is a major disease of common beans quality of 34 samples of seeds lots of common beans produced in the in brazil. even though this pathogen is disseminated in all production state of paraná during 1998/99 and 1999 were evaluated to the presence regions of the country, it has caused major damages in the states of of xap in seed macerates plated on a semi-selective culture medium. paraná, rio de janeiro and s?o paulo and in central region of brazil, fifty percent of the seed lots were carrying out by xap with an particularly during the rainy season. infected bean seeds are most incidence range of 0.1% to 1.7%.
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