Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The marketable banana fruit is climatic and therefore has a short maturation period, which means shorter shelf life. Properly stored storage becomes of great value so that such transformations do not harm the commercialization of fruit. However, research is needed to provide more affordable maturation alternatives for smallholder and domestic consumption. Thus, the objective of this study was to evaluate the physical and physicochemical quality of silver banana submitted to different types of maturation. A completely randomized design with four treatments was used: CONT = environment temperature, CARB = carbide, SP = paper bag, and FOR = oven temperature, with five replications each. The fruits were collected on the same day and with the same green color. The variables analyzed were: total weight, pulp weight, shell thickness, pulp thickness, internal and external appearance; longitudinal and transverse lengths; total soluble solids (SST), total titratable acidity (TA) and SST / TA ratio. External and internal appearances were determined using a rating scale; the pulp TSS were measured in a digital refractometer; total weight and pulp weight with the aid of semi-analytical balance and acidity by titration. Carbide and bag maturation methods presented the best banana quality and shelf life. It is recommended to put the green bananas in bags to obtain higher quality ripe bananas than the other methods.

A deficiência nutricional é um dos fatores que afetam a produção do feijão em diversas regiões do Brasil e o baixo rendimento dessa cultura é muitas vezes em função da exploração inadequada em áreas com baixa fertilidade, além de pouco investimento tecnológico. O tratamento de sementes com a aplicação de micronutrientes é uma forma prática e eficiente de fornecer-lo de maneira mais rápida para acultura. Objetivou-se avaliar a qualidade fisiológica de sementes de feijão submetidas a diferentes períodos de embebição em soluções com boro e molibdênio. Para a aplicação dos micronutrientes boro (B) e molibdênio (Mo) nas sementes de feijão, realizou-se inicialmente a dissolução das fontes em 4 ml de água destilada e posteriormente as sementes foram embebidas por 1, 2, 3, 4 e 5 horas à temperatura ambiente, e para a testemunha, utilizou-se as sementes sem tratamento, constituindo o período zero. Após cada período de embebição as sementes foram submetidas aos seguintes testes: porcentagem de germinação, primeira contagem de germinação, comprimento e massa seca da raiz e parte aérea. O delineamento experimental utilizado foi o inteiramente ao acaso com quatro repetições de 25 sementes.  Verificou-se que o tempo de embebição das sementes nas soluções de boro e molibdênio influenciou positivamente a germinação e o vigor das sementes de feijão, sendo recomendado a embebição por um período de cinco horas.

ABSTRACT: Wasps contribute to environmental quality and ecosystem services, and play a key role in the functioning of many environments. The present study identified the diversity of species of solitary wasps that occupied trap-nests in farming environments. as well as the architecture of the nests found. The study focused on three areas of agroecosystem, where 30 blocks of trap-nests, with four diameters (5 mm, 7 mm, 9 mm, and 11 mm), were installed. A total of 56 nests were occupied by solitary wasps, with the most frequent species being Trypoxylon sp.1 (N=100, 54.9%), Pachodynerus cf. brevithorax (N=31, 17.0%), Trypoxylon sp.2 (N=27, 14.8%) and Caenochrysis nigropolita (N=9, 4.9%). The wasps occupied preferentially the trap-nests of 5 mm and 7 mm in diameter. Six wasp families were recorded, with the most abundant being the Crabronidae with 127 individuals, followed by the family Vespidae (N=36). Reduced number of species was recorded in the study area with frequent use of pesticides, and farming practices, which may damage nesting sites. These findings provide important guidelines for the use of agricultural practices, and emphasize the need for the adoption of effective strategies for the conservation and sustainable management of the populations of these potentially beneficial insects. KEY-WORD: Conservation, hymenopterans, agroecosystems.

The municipality of São João is one of the largest producers of common bean (Phaseolus vulgaris L.) in Pernambuco, but has sandy soils with nutrient content and water retention low, which limits bean yield. Biochar has been used to increase water retention and may be an alternative for the region. Thus, the objective of the present study was to evaluate different biochar rates on the yield, evapotranspiration (ET) and water use efficiency (EUA) of bean. A greenhouse pot experimente was conducted out using biochar, in a completely randomized design, with four repetitions. Treatments consisted in four rates of biochar made with coffee husk: 0, 5, 10 and 20 t ha-1. Biomass, ET and WUE of bean were evaluated. It was verified that there was a reduction of the ET with the increase of the rates of biochar. The rates of 11 and 12.1 t ha-1 of coffee husk biochar provided higher yield and higher WUE of bean. For the cultivation of beans, in sandy soils of the agreste region of Pernambuco, the use of rate of 11 t ha-1 of coffee husk biochar is recommended.

Anuran amphibians are vertebrates that have as singular characteristic the development of the larval phase in the aquatic environment and the adult phase in the terrestrial environment. Like other animals, they are components of the food chain, feeding on insects and other terrestrial invertebrates, they are responsible for controlling various pests. In addition, they are also important indicators of environmental quality, being called bioindicators. The present study aimed to address the general characteristics of anuran amphibians and their biodiversity. The method was exploratory, through bibliographic search in the database of Scielo, CAPES and Google Scholar. The following were selected to compose the present study: 10 international articles; 04 national articles; 06 international and 05 national informative websites, and 07 national books and 09 international books, published, from 1926 to 2017. From the bibliographic review it is possible to realize the importance of knowing the characteristics, behavior and the role that this group of animals have on ecological balance. It is noteworthy that the lack of knowledge of the population poses a risk of extinction for the different species of these animals in the world. Thus, this study was relevant, in the sense of bringing clarifications, allowing to reverse a scenario of erroneous information about anuran amphibians.  

Rapid vigor tests are currently used by seed companies to evaluate batch quality. The seed industry with the technological evolution, demands faster and faster separation of high vigor lots. Thus, this work aimed to verify the efficiency and speed of seed respiratory activity to differentiate the vigor of bean seed lots. The work was carried out at the Rural University of Pernambuco, conducted at the Seed Analysis Laboratory with three bean lots acquired in municipalities of the state of Pernambuco. Some tests and determinations were performed: moisture content, one thousand seed weight, germination, first germination count, shoot and root length and dry mass, electrical conductivity, seedling emergence, shoot, root and dry mass length aerial part. The emergence speed index indicated lot 3 and 1 as the ones with the highest physiological potential and lot 2 as the lowest. Bean seeds from lot 2, in the germination tests, germination speed index, emergence speed index, shoot and root dry mass as the least vigorous lot, and which had the lowest CO2 release in the respiratory activity test. The respiratory activity test can be used to determine bean seed vigor after 12 hours of soaking.    

This article discusses the Parnassian and Symbolist influences in the poem Musa Impassível I, by Francisca Júlia (1874-1920). The theoretical-methodological course started with bibliographical research and the qualitative approach supported by readings and reflections of authors such as Almeida (2009), Candido & Castello (2007), among others. On the basis of the content, it was concluded that the Parnassian influence resides from the formal aspect of the sonnet - the Parnassian ideal par excellence - to the thematic aspects of the poem, considering that the sonnet under study approaches concepts and rules for itself make poetic. On the other hand, the symbolist influence, as in the case of the Parnassian one, can also be evidenced in the sonnet, but with some differences, since the author's approach is not limited to the formal requirements of poetic procedures. Quite the contrary, the poet mixes various themes, such as the faith and story of characters in the biblical narrative. Moreover, in the symbolist construction, the preference for light tones was evident, as one could perceive in the choice of the adjective "candid".

The challenge in the learning process through the reality of the public school: an analysis of the demotivation of the students in the classes of GeographyRESUMO: A educação pública ao longo dos anos passa por diferentes barreiras, cabendo aos decentes se adaptar a diferentes contextos educacionais, somado a diferentes desafios socioeconômicos dos alunos, possibilitando uma desmotivação nas aulas de geografia. Este artigo tem como objetivo principal identificar os problemas de aprendizagem na disciplina de geografia, visando entender as principais barreiras enfrentadas pelos alunos com um enforque na análise da forma como os alunos enxergam a disciplina de geografia, diante dessa perspectiva, como pesquisadores buscamos propor algumas possíveis soluções. A metodologia se dar de forma qualitativa e quantitativa baseado em estudos de obras como Demo (2004), Freire (1996) e Trindade (2007) com aplicações de questionários aos alunos, observação de campo e entrevistas informais. Os resultados revelam que fatores como bulling, racismo, e métodos tradicionais, desmotivam os alunos nas aulas geografia. Consideramos que existe uma necessidade de reformulação nas condições de ensino e a criação de melhores métodos de ensino que envolvam a motivação e proporcionem a possibilidade dos alunos enxergar a geografia como uma disciplina transformadora no que diz respeitos a construção e desconstrução do conhecimento.PALAVRAS CHAVE: Desafio, aluno, aprendizagem.ABSTRACT: Public education over the years goes through different barriers, and it is up to the decent to adapt to different educational contexts, added to the different socioeconomic challenges of the students, allowing a disassembly in the geography classes. This article has as main objective identified the problems of learning in the discipline of geography aiming to understand as the main barriers faced by students with a hang on the analysis of the way students emerge a discipline of geography, anticipated perspective, as researchers seek to propose a solution of ideas. A methodology, such as Demo (2004), Freire (1996) and Trindade (2007) with applications of questionnaires to students, field observation and informal interviews. The results reveal that factors such as bulling, racism, and traditional methods, discourage students in geography classes. We consider that there is a need for reformulation in teaching conditions and a creation of better teaching methods that involve a motivation and provide a possibility for students to see a geography as a transforming discipline without regard to the construction and deconstruction of knowledge.KEYWORDS: Challenge, student, learning.

Com a evolução dos recursos energéticos e a grande utilização dos combustíveis fósseis, a emissão de gases poluentes como o dióxido de carbono, cresceu gradativamente agravando o aquecimento global, causado serias preocupações com o futuro do planeta. O hidrogênio surge como um vetor energético que apresenta propriedades que o coloca como o combustível do futuro, numa possível substituição dos combustíveis fósseis. Dentre essas propriedades destaca-se o fato de não emitir gases poluentes na atmosfera, uma vez que em sua combustão há apenas a liberação de água e energia. O presente trabalho objetivou realizar um levantamento bibliográfico de artigos publicados entre 2013 e 2017 nas bases Scielo, Google Acadêmico e Periódico Capes, sofre as técnicas de produção de hidrogênio.  Entre os métodos de obtenção de hidrogênio destaca-se a eletrólise da água ou mesmo por métodos biológicos por espécies de bactérias fotossintetizantes, cianobactérias ou algas e métodos fermentativos. Pesquisas que envolvam os mais variados aspectos na implantação da economia de hidrogênio devem ser intensificadas para a maior viabilidade de suas tecnologias e possível introdução deste combustível nas matrizes energéticas do mundo.

RESUMO: O presente artigo partiu do interesse em identificar como vem ocorrendo a prática pedagógica dos educadores no campo pelo ideário da educação do campo e da educação popular. Atualmente a educação do campo vem sendo ressignificada em seu contexto político, cultural e econômico, sendo assim, é importante dialogar sobre, agregando a necessidade que emerge de uma discussão mais aproximada com a educação popular. Assim, como os estudiosos sobre o campo pensam a educação do campo? Neste interesse, a metodologia desenvolveu-se a partir de uma pesquisa bibliográfica acerca da educação do campo, da educação popular e da prática pedagógica. Com esta finalidade foi possível entender como pensam os pesquisadores sobre o contexto do campo e suas especificidades. A luz de alguns pesquisadores como Arroyo (2005); Molina (2006); Caldart (2002); Wanderley (2010) e outros foram possíveis confrontar o contexto empírico com as possibilidades defendidas pelos autores como alternativas metodológicas que corroboram para o processo de aprendizagem, de valorização da cultura, da identidade e do contexto em que se desenvolve a educação do campo. A educação do campo e a educação popular possuem aproximações teoricamente, sendo estas pertinentes para que se desenvolva de fato nas escolas do campo, as quais muitas delas possuem uma prática tradicional, meramente urbanocêntrica.PALAVRAS-CHAVE: Prática Pedagógica, escola do campo, diálogo.ABSTRACT: This article came from interest in identifying as it has the pedagogical practice of educators in the field through the opposing ideas of education and popular education. Currently the education field has been re-signified in its political, cultural and economic context, therefore, it is important to talk about, adding the need emerging from a closer discussion with the popular education. As well as scholars of the countryside think education field? This interest, the methodology developed from a bibliographical research about the field of education, popular education and teaching practice. To this end it was possible to understand how researchers think about the context of the field and its specificities. The light of some researchers as Arroyo (2005); Molina (2006); Caldart (2002); Wanderley (2010) and others were possible confront the empirical context with the possibilities advocated by the authors as methodological alternatives that support for the process of learning, appreciation of culture, identity and context in which it develops the education field. The rural education and popular education have theoretically approached, which are relevant in order to develop actually in the schools of the field, which many of them have a traditional practice, merely urbanocêntrica.KEYWORDS: Teaching Practice, field school, dialogue.RESUMO: O presente artigo partiu do interesse em identificar como vem ocorrendo a prática pedagógica dos educadores no campo pelo ideário da educação do campo e da educação popular. Atualmente a educação do campo vem sendo ressignificada em seu contexto político, cultural e econômico, sendo assim, é importante dialogar sobre, agregando a necessidade que emerge de uma discussão mais aproximada com a educação popular. Assim, como os estudiosos sobre o campo pensam a educação do campo? Neste interesse, a metodologia desenvolveu-se a partir de uma pesquisa bibliográfica acerca da educação do campo, da educação popular e da prática pedagógica. Com esta finalidade foi possível entender como pensam os pesquisadores sobre o contexto do campo e suas especificidades. A luz de alguns pesquisadores como Arroyo (2005); Molina (2006); Caldart (2002); Wanderley (2010) e outros foram possíveis confrontar o contexto empírico com as possibilidades defendidas pelos autores como alternativas metodológicas que corroboram para o processo de aprendizagem, de valorização da cultura, da identidade e do contexto em que se desenvolve a educação do campo. A educação do campo e a educação popular possuem aproximações teoricamente, sendo estas pertinentes para que se desenvolva de fato nas escolas do campo, as quais muitas delas possuem uma prática tradicional, meramente urbanocêntrica. PALAVRAS-CHAVE: Prática Pedagógica, escola do campo, diálogo. ABSTRACT:This article came from interest in identifying as it has the pedagogical practice of educators in the field through the opposing ideas of education and popular education. Currently the education field has been re-signified in its political, cultural and economic context, therefore, it is important to talk about, adding the need emerging from a closer discussion with the popular education. As well as scholars of the countryside think education field? This interest, the methodology developed from a bibliographical research about the field of education, popular education and teaching practice. To this end it was possible to understand how researchers think about the context of the field and its specificities. The light of some researchers as Arroyo (2005); Molina (2006); Caldart (2002); Wanderley (2010) and others were possible confront the empirical context with the possibilities advocated by the authors as methodological alternatives that support for the process of learning, appreciation of culture, identity and context in which it develops the education field. The rural education and popular education have theoretically approached, which are relevant in order to develop actually in the schools of the field, which many of them have a traditional practice, merely urbanocêntrica. KEYWORDS: Teaching Practice, field school, dialogue. <w:LsdException Locked="false" Prior