Federal University of Roraima

About: Federal University of Roraima is a based out in . It is known for research contribution in the topics: Population & Thermogravimetry. The organization has 981 authors who have published 1218 publications receiving 7849 citations. The organization is also known as: Federal University of Roraima.

Potencial do uso da beldroega na segurança alimentar de comunidades em situação de risco e vulnerabilidade social

Abstract: O potencial da beldroega (Portulaca oleracea) tem chamado atencao de extensionistas, tecnicos e pesquisadores devido sua rusticidade, adaptabilidade, podendo ser, alternativa para diversificar e melhorar a qualidade nutricional da dieta de populacoes de baixa renda. Esta pesquisa bibliografica teve como objetivo socializar as principais potencialidades de uso da Portulaca oleracea que possam promover a seguranca alimentar em comunidade em situacao de risco e vulnerabilidade social. Elaborou-se pesquisa bibliografica nas plataformas da Scielo, Google Academico e periodicos da CAPES, com as palavras-chave: seguranca alimentar; PANCS; Portulaca oleracea; comunidade em situacao de risco e vulnerabilidade social, beldroega. A partir desta pesquisa, fica clara a potencialidade de uso de Portulaca oleracea na promocao da seguranca alimentar em comunidades em situacao de risco e vulnerabilidade social.

Population fluctuations in the pink hibiscus mealybug and its natural enemies in Annona squamosa (Annonaceae) in Roraima, Brazil.

Abstract: Maconellicoccus hirsutus (Hemiptera, Pseudococcidae), a species of economic interest, especially for fruit plants, is expanding on the South American continent. Information about the population dynamics of this pest associated with control by natural enemies and cultural practices is fundamental for its management. Our objective was to study the population fluctuations in M. hirsutus and its natural enemies in a sugar-apple (Annona squamosa) orchard in Roraima, northern Brazil. Trees were evaluated monthly over a 12-month period. Infestation rates by M. hirsutus and its parasitism were also estimated for potential host plants around the study area. Highest infestation occurred in August and February-March. Alternative hosts were infested during the off-season, mainly fruit. Lacewings and the parasitoid Anagyrus kamali (Hymenoptera, Encyrtidae) were abundant natural enemies. Average parasitism by A. kamali in fruits was 50%, with highest rates in periods of greatest infestation by M. hirsutus. Fruitification pruning reduced M. hirsutus populations.

Uso de biofertilizantes en el desarrollo vegetativo y productivo de plantas de camu-camu en Ucayali, Perú

Abstract: RESUMEN Para aumentar la calidad y el rendimiento de frutos en plantaciones de camu-camu, actualmente se viene buscando alternativas de produccion organica. En ese sentido, el presente trabajo tuvo por objetivo determinar el efecto de diferentes biofertilizantes en el desarrollo vegetativo y productivo de plantas de camu-camu. Para ello, fue conducido un experimento mediante un diseno de bloques completamente al azar (DBCA) en esquema factorial (5Bx5C), con cuatro repeticiones y una planta por unida experimental. El primer factor (B) estuvo constituido por 5 tipos de biofertilizantes: B1) vacaza (estiercol de vaca), B2) gallinaza (estiercol de gallina de postura), B3) guano de isla (estiercol de aves de mar), B4) pollinaza (estiercol de pollo) y B5) sedimentos de rio, y el segundo factor (C) por cinco concentraciones de biofertilizante: C1) 0, C2) 2, C3) 4, C4) 6 y C5) 8%. Despues de 210 dias, fue verificado que, el biofertilizante guano de isla estimulo mayor emision de brotes nuevos (1773,73) y el biofertilizante vacaza presento los mejores resultados de botones florales, numero de frutos de cosecha y rendimiento de frutos (t ha-1) con 4611,67; 2926,85 y 28,8 en las dosis 6; 8 y 8%, respectivamente. Se concluye que, el biofertilizante vacaza (VA) incremento la calidad y el rendimiento de frutos de camu-camu en suelos de restinga. Asi tambien, el biofertilizante guano de isla (GI) fue el segundo en presentar los mejores resultados, sin embargo, el alto contenido de N retardo el desarrollo normal de las fases fenologicas.

Public Policy and Curriculum Guidelines on Higher Education of Journalism in Brazil

Abstract: The 70 years of higher education in Journalism in Brazil are part of the project that legally regulates the curriculum requirements for vocational training intended by the Brazilian State. This research has recovered the history of the higher education courses triangulated by the established literature on the topic, observing its numerical growth in both the offer of training positions and in the increase in the number of positions in different regions of the Brazilian territory. The moment of occurrence of the legal devices of public policies that regulate the activity of higher education in journalism and other state actions has also been contextualized, in accordance with the recognition of the political system that instituted it. An exploratory survey of the national bibliographical production on the theme was carried out, to later consider the challenges encountered in the training activity. Faced with phenomena marked by violence against journalists and restrictions to the development of the activity in the professional practice of journalism, one strongly questions what skills are in mind when it comes to critically assessing the proposed formation. But these contradictory conditions do not prevent them to present themselves to the labour market every year. In Brazil there are 145,000 registered journalists, 89% of them having been registered as holders of higher education diplomas. An estimated 52,900 journalists were registered between the years 1980 and 2000. The rate of workers that obtained the register between the years 2000 and 2011 reached the amount of 92,500 (BERGAMO, MICK and LIMA, 2012). It is considered that about 90% are holders of higher education diplomas. This research recovered the history of the creation of the higher education courses according to the registers of the Ministry of Education triangulated by the specialized literature, observing their growth regarding both the number of vacancies offered for journalism and the number of courses offered in different regions of the Brazilian territory. The moment of appearance of the legal systems that integrate the public practices regulating the activity of higher education in journalism and other state actions was contextualized, according to the recognition of the political system by which they were organized. By the study of documental sources, it can be acknowledged that the higher education in journalism has known different intervention instruments since the public education policies. This is connected to legal instruments as the Minimum Curricula, succeeded by the Curricular Guidelines and other legal instruments, as discussed hereinafter. In addition, an exploratory survey concerning the national literature on the subject was held, so as then to think over the difficulties imposed to the training activity, specially in a framework to which the action of the Brazilian State has been critical. Shifting from the legal requirements to the contents, raising the bibliographical production of the year 2000, specifically published after the first version of the National Curricular Guidelines in 2001 and only considering the texts on journalism training, a significant number of academic works were found. Regarding the researches developed in the graduate programs in communication, 39 thesis and dissertations that were defended in this period in Brazil were identified. In addition to this production are more than 300 scientific papers published in 32 national scientific journals and in the proceedings of four of the most important scientific events in the area of communication that deal specifically with studies of journalism. Empirical and documentary references allow the confirmation of the presence of an author given to his regular publications on the subject (MOURA, 2000). Professor Jose Marques de Melo researches the topic since the 1970s and wrote at least nine titles, between books and compilation of texts (MELO, 1974, 1981, 1985, 1986, 1991, 2006, 2008, 2009, 2011; MELO, FADUL and SILVA, 1979; MELO, VIDAL and ALVES, 2012) dedicated to the pedagogy of communication, specially the various aspects of journalism training. The position defended by the Brazilian Ministry of Education in different governments since the creation of the Minimum Curriculum in 1962, through the Military Regime and in effect from the "New Republic" (1985) to the present, arouses questions regarding the comprehension of the relations between journalism and political power. How much is journalism and the training of its professionals worth for the Brazilian State? As argued, the research reinforces an understanding of the advanced vocational training as surrounded by tension; being protected by the State, a parallel was drawn while limiting university autonomy. The protection of the Brazilian State regarding higher education also raises the question of why - being its consecutive authoritarian and democratic governments unable to establish a regulatory framework consistent to the technological status of the national media system - proselytize with the teaching of journalism. 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