Tendências teórico-metodológicas na pesquisa em educação: o caso do Mestrado em Educação da Universidade Regional de Blumenau (FURB), Santa Catarina, Brasil

O principal objetivo da presente pesquisa consiste em abordar essas tendências na produção de Dissertações de Mestrado no Programa de Pós-graduação em Educação (PPGE) da Universidade Regional de Blumenau (FURB), Blumenau, Santa Catarina, Brasil. A pesquisa é de caráter quali-quantitativo e fundamenta-se no estudo de 44 Dissertações de Mestrado em Educação da FURB relacionadas ao Ensino de Ciência, Filosofia e Epistemologia da Educação. Pode-se observar uma importante influência das perspectivas filosóficas de Paulo Freire e de Thomas S. Kuhn nas Dissertações que têm com foco a Filosofia e Epistemologia da Educação. Já nas Dissertações que têm como problemática de pesquisa o Ensino de Ciências, a maior fundamentação está em Ubiratan D´Ambrósio e Fritjof Capra. Em ambos o caso, prevalece a pesquisa qualitativa. A metodologia de pesquisa utilizada aparece no capítulo introdutório. Observa-se que as Dissertações sobre o Ensino de Ciências colocam de forma mais explícita os autores utilizados na definição da Metodologia da Pesquisa. As tendências teórico-metodológicas da produção de Dissertações do Mestrado em Educação da FURB manifestam a crescente preocupação em refletir sobre os fundamentos da Pesquisa em Educação e sua cientificidade.The main objective of this research is to address these trends in the production of Dissertations in the Masters Program for Post-graduate diploma in Education (PPGE) Regional at the University of Blumenau (FURB), Blumenau, Santa Catarina, Brazil. The search is character-quality quantitative and based on the study of 44 Dissertations of Master in Education of FURB related to the Teaching of Science, Philosophy and Epistemologia Education. You can see a significant influence of philosophical perspectives of Paulo Freire and Thomas S. Kuhn in Dissertations have with the focus Epistemologia Philosophy and Education. Already in Dissertations that are problematic to search the Teaching of Science, the biggest reasons is Ubiratan D'Ambrose and Fritjof Capra. In both cases, the prevailing qualitative research. The methodology used appears in the search introductory chapter. It is observed that the Dissertations on the Teaching of Science put in a more explicit the authors used in the definition of the Research Methodology. The theoretical and methodological trends in the production of Dissertations of the Masters in Education of FURB expressed concern at the increasing reflect on the foundations of Research in Education and its cientificidade

Plastic in the Environment: A Modern Type of Abiotic Stress for Plant Physiology

In recent years, plastic pollution has become a growing environmental concern: more than 350 million tons of plastic material are produced annually. Although many efforts have been made to recycle waste, a significant proportion of these plastics contaminate and accumulate in the environment. A central point in plastic pollution is demonstrated by the evidence that plastic objects gradually and continuously split up into smaller pieces, thus producing subtle and invisible pollution caused by microplastics (MP) and nanoplastics (NP). The small dimensions of these particles allow for the diffusion of these contaminants in farmlands, forest, freshwater, and oceans worldwide, posing serious menaces to human, animal, and plant health. The uptake of MPs and NPs into plant cells seriously affects plant growth, development, and photosynthesis, finally limiting crop yields and endangering natural environmental biodiversity. Furthermore, nano- and microplastics—once adsorbed by plants—can easily enter the food chain, being highly toxic to animals and humans. This review addresses the impacts of MP and NP particles on plants in the terrestrial environment. In particular, we provide an overview here of the detrimental effects of photosynthetic injuries, oxidative stress, ROS production, and protein damage triggered by MN and NP in higher plants and, more specifically, in crops. The possible damage at the physiological and environmental levels is discussed

PERFORMANCE OF TWO TYPES OF CEMENT IN PRODUCTION OF CEMENT BONDED WOOD PANELS COMBINED WITH RICE HULL

AbstractThe objective of this study was to evaluate the performance of two types of cement in the manufacturing of cement bonded wood panels with addition of rice hull. Sealers used were cement V-ARI (CP V) and cement Portland IV, pozzolanic (CP IV). Proportions adopted in the composition of panels were 0, 50 and 100 % rice hulls combined with 100, 50 and 0% of wood particles. Species used in this study were Eucalyptus grandis and Pinus elliottii. Parameters considered to evaluate panels were the mechanical properties. CP IV did not cure with the addition of pine particles in any proportion. The values of modulus of rupture (MOR) were higher with CP IV, but with the addition of rice hulls they decreased. CP V shoved higher internal bond strength in all proportions studied. Addition of rice hulls decreased all the mechanical properties studied in this work, therefore its use in cement bonded wood panels must be controlled, larger quantities than 50% of total vegetal mass weight are not recommended. Using Bison process as a reference, CP IV presented the necessary requirements to be used in cement bonded wood panels.Keywords: Eucalyptus grandis; CP IV; CP V-ARI; agricultural waste.AbstractPERFORMANCE OF TWO TYPES OF CEMENT IN PRODUCTION OF CEMENT BONDED WOOD PANELS COMBINED WITH RICE HULLThe objective of this study was to evaluate the performance of two types of cement in the manufacturing of cement bonded wood panels with addition of rice hull. Sealers used were cement V-ARI (CP V) and cement Portland IV, pozzolanic (CP IV). Proportions adopted in the composition of panels were 0, 50 and 100 % rice hulls combined with 100, 50 and 0% of wood particles. Species used in this study were Eucalyptus grandis and Pinus elliottii. Parameters considered to evaluate panels were the mechanical properties. CP IV did not cure with the addition of pine particles in any proportion. The values of modulus of rupture (MOR) were higher with CP IV, but with the addition of rice hulls they decreased. CP V shoved higher internal bond strength in all proportions studied. Addition of rice hulls decreased all the mechanical properties studied in this work, therefore its use in cement bonded wood panels must be controlled, larger quantities than 50% of total vegetal mass weight are not recommended. Using Bison process as a reference, CP IV presented the necessary requirements to be used in cement bonded wood panels.Keywords: Eucalyptus grandis; CP IV; CP V-ARI; agricultural waste. ResumoDesempenho de dois tipos de cimentos na produção de painéis cimento madeira combinados com casca de arroz. O objetivo deste trabalho foi avaliar o desempenho de dois tipos de cimento na manufatura de painéis cimento madeira com adição de casca de arroz. Os cimentos avaliados foram o cimento Portland V - ARI (CP V) e o cimento Portland IV, pozolânico (CP IV). As proporções usadas na composição dos painéis foram de 0, 50 e 100% de casca de arroz combinadas com 100, 50 e 0% de partículas de madeira, sendo as espécies utilizadas Eucalyptus grandis e Pinus elliottii. Os parâmetros utilizados para avaliar os painéis foram as propriedades mecânicas. O CP IV não foi capaz de curar com a adição das partículas de pinus em nenhuma proporção. Os valores de módulo de ruptura (MOR) foram maiores com o CP IV, porém com adição de casca de arroz estes foram decrescendo. O CP V apresentou maiores valores de ligação interna para todas as proporções estudadas. A adição da casca de arroz diminuiu todas as propriedades estudadas neste trabalho portanto a sua utilização em painéis cimento madeira deve ser controladas e não aconselhadas em quantidades maiores que 50% do peso da massa vegetal utilizada. Usando o processo Bison como referência, o CP IV apresentou os requerimentos necessários para uso como painéis cimento madeira.Palavras-chave: Eucalyptus grandis; CP IV; CP V-ARI; resíduo agrícola

Environmental suitability for Lutzomyia longipalpis in a subtropical city with a recently established visceral leishmaniasis transmission cycle, Argentina

BACKGROUND Visceral leishmaniasis (VL) is an endemic disease in northeastern Argentina including the Corrientes province, where the presence of the vector and canine cases of VL were recently confirmed in December 2008. OBJECTIVES The objective of this study was to assess the modelling of micro- and macro-habitat variables to evaluate the urban environmental suitability for the spatial distribution of Lutzomyia longipalpis presence and abundance in an urban scenario. METHODS Sampling of 45 sites distributed throughout Corrientes city (Argentina) was carried out using REDILA-BL minilight traps in December 2013. The sampled specimens were identified according to methods described by Galati (2003). The analysis of variables derived from the processing of satellite images (macro-habitat variables) and from the entomological sampling and surveys (micro-habitat variables) was performed using the statistical software R. Three generalised linear models were constructed composed of micro- and macro-habitat variables to explain the spatial distribution of the abundance of Lu. longipalpis and one composed of micro-habitat variables to explain the occurrence of the vector. FINDINGS A total of 609 phlebotominae belonging to five species were collected, of which 56% were Lu. longipalpis. In addition, the presence of Nyssomyia neivai and Migonemya migonei, which are vectors of tegumentary leishmaniasis, were also documented and represented 34.81% and 6.74% of the collections, respectively. The explanatory variable normalised difference vegetation index (NDVI) described the abundance distribution, whereas the presence of farmyard animals was important for explaining both the abundance and the occurrence of the vector. MAIN CONCLUSIONS The results contribute to the identification of variables that can be used to establish priority areas for entomological surveillance and provide an efficient transfer tool for the control and prevention of vector-borne diseases.Fil: Berrozpe, Pablo Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Salud. Instituto Nacional de Medicina Tropical; Argentina. Ministerio de Ciencia, Tec. E Innovación Productiva. Subsecretaria de Politicas En Ciencia, Tecnología E Innovación Productiva; Argentina. Red de Investigación de la Leishmaniasis en Argentina; ArgentinaFil: Lamattina, Daniela. Ministerio de Salud. Instituto Nacional de Medicina Tropical; ArgentinaFil: Santini, Maria Soledad. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina. Ministerio de Ciencia, Tec. E Innovación Productiva. Subsecretaria de Politicas En Ciencia, Tecnología E Innovación Productiva; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Araujo, Analia Vanesa. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas, Naturales y Agrimensura. Departamento de Biología. Laboratorio Biología de los Parásitos; Argentina. Ministerio de Ciencia, Tec. E Innovación Productiva. Subsecretaria de Politicas En Ciencia, Tecnología E Innovación Productiva; Argentina. Red de Investigación de la Leishmaniasis en Argentina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Útges, María Eugenia. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina. Red de Investigación de la Leishmaniasis en Argentina; ArgentinaFil: Salomón, Oscar Daniel. Ministerio de Salud. Instituto Nacional de Medicina Tropical; Argentina. Ministerio de Ciencia, Tec. E Innovación Productiva. Subsecretaria de Politicas En Ciencia, Tecnología E Innovación Productiva; Argentina. Red de Investigación de la Leishmaniasis en Argentina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Ductal invasive carcinoma arising within atypical microglandular adenosis in a patient with BRCA-1 mutation: A case report

Abstract Microglandular adenosis (MGA) of the breast is a benign lesion that may mimic invasive carcinoma and which has been proposed to be a potential precursor of a well defined subset of triple-negative and basal-like breast carcinomas, characterized by specific expression of both basal and luminal markers (positive for EGFr and luminal cytokeratins such as CK 8/18, negative for high molecular weight cytokeratins such as CK 5/6), with a crucial role played by p53 mutation as "driver mutation" in the multistep model of cancerization. When an invasive carcinoma arises in a background of MGA, it is possible to identify a clear multistep transition from conventional MGA to atypical MGA (AMGA), Ductal Carcinoma In Situ (DCIS) arising within AMGA and invasive carcinoma. This is the first histological case report of an invasive carcinoma arising within MGA and AMGA in a patient carrying a germline BRCA-1 mutation, recognized as one of the most important genetic alterations correlated with the development of triple-negative carcinoma

Evaluation of remotely sensed evapotranspiration products MOD16 and GLEAM in eddy covariance flux sites from LBA Project

O objetivo do trabalho é analisar o desempenho dos conjuntos de dados de evapotranspiração (ET) dos modelos MOD16 e GLEAM, em nove sítios nos quais estão instaladas torres de monitoramento de fluxos turbulentos. Para esse fim, os dados de ambos os produtos foram adquiridos e as médias diárias calculadas. As ET estimadas pelos modelos foram comparados com as observadas nas torres de monitoramento de fluxos turbulentos do Projeto de Grande Escala da Biosfera-Atmosfera na Amazônia (LBA). Foi realizada a análise estatística através do coeficiente de correlação (R), do erro médio quadrático (RMSE) e do erro médio (BIAS). Os resultados indicam que os dois produtos de ET analisados são capazes de representar, de forma geral, o comportamento da ET observado nas torres de fluxo. O MOD16 e o GLEAM apresentam estatísticas similares, quando comparados com os dados observados. Tanto as estimativas dos modelos quanto as das torres de fluxo turbulento estão sujeitas à incertezas que influenciam a análise dos produtos de ET.This study aims to evaluate the performance of MOD16 and GLEAM evapotranspiration (ET) datasets in nine eddy covariance monitoring sites. Data from both ET products were downloaded and its daily means calculated. Evapotranspiration estimations were then compared to the observed ET in the eddy covariance monitoring sites from the Large-Scale Biosphere-Atmosphere Experiment in the Amazon (LBA). We performed a statistical analysis using the correlation coefficient (R), the root mean square error (RMSE) and BIAS. Results indicate that, in general, both products can represent the observed ET in the eddy covariance flux towers. MOD16 and GLEAM showed similar values to the calculated statistics when ET estimates were compared to observed ET. Model estimates and eddy covariance flux towers are subject to uncertainties that influence the analysis of remotely-sensed ET products

Avaliação dos produtos de evapotranspiração baseados em sensoriamento remoto MOD16 e GLEAM em sítios de fluxos turbulentos do Programa LBA

This study aims to evaluate the performance of MOD16 and GLEAM evapotranspiration (ET) datasets in nine eddy covariance monitoring sites. Data from both ET products were downloaded and its daily means calculated. Evapotranspiration estimations were then compared to the observed ET in the eddy covariance monitoring sites from the Large-Scale Biosphere-Atmosphere Experiment in the Amazon (LBA). We performed a statistical analysis using the correlation coefficient (R), the root mean square error (RMSE) and BIAS. Results indicate that, in general, both products can represent the observed ET in the eddy covariance flux towers. MOD16 and GLEAM showed similar values to the calculated statistics when ET estimates were compared to observed ET. Model estimates and eddy covariance flux towers are subject to uncertainties that influence the analysis of remotely-sensed ET products.O objetivo do trabalho foi analisar o desempenho dos conjuntos de dados de evapotranspiração (ET) dos modelos MOD16 e GLEAM em nove sítios nos quais estão instaladas torres de monitoramento de fluxos turbulentos. Para esse fim, os dados de ambos os produtos foram adquiridos e as médias diárias calculadas. As ET estimadas pelos modelos foram comparados com as observadas nas torres de monitoramento de fluxos turbulentos do Projeto de Grande Escala da Biosfera-Atmosfera na Amazônia (LBA). Foi realizada a análise estatística através do coeficiente de correlação (R), do erro médio quadrático (RMSE) e do erro médio (BIAS). Os resultados indicam que os dois produtos de ET analisados são capazes de representar, de forma geral, o comportamento da ET observado nas torres de fluxo. O MOD16 e o GLEAM apresentam estatísticas similares, quando comparados com os dados observados. Tanto as estimativas dos modelos quanto as das torres de fluxo turbulento estão sujeitas à incertezas que influenciam a análise dos produtos de ET