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.

Gestão sustentável de unidades de conservação: O caso da APA estadual do rio Pandeiros, Minas Gerais

Abstract: A eficiencia dos planos de manejo de Unidades de Conservacao e um dos principais problemas quando a questao e a conservacao, acompanhada da preservacao do meio ambiente. O presente artigo examina um dos problemas na implantacao dos planos e gestao desses espacos: a nao participacao das comunidades. Para tal destaca a visao dos moradores e a relacao com o orgao gestor, apontando para a nao participacao e os principais problemas que enfrentam para a sobrevivencia em uma Unidade de Conservacao, a APA Estadual do Rio Pandeiros, que esta inserida em uma das regioes mais pobres de Minas Gerais. Em outro momento sao avaliadas as acoes do orgao gestor e as dificuldades que encontram na implementacao de seus projetos. Dessa forma pretende-se contribuir para as discussoes sobre a gestao dessas areas, apontando para a importância da participacao da comunidade que se torna parceira no processo.

The Yanomami sociopolitical dynamics in the context of the Hutukara creation: the Pata Thëpë and the emergency of young political leaderships

Abstract: The current study is an effort to understand the Yanomami sociopolitical dynamic in the context of mobilization and articulation that preceded the establishment of Hutukara Yanomami Association; in that context, new patterns of dialogs and knowledge were established, fact that has delineated new forms of relationship between youth and elder leaders. From reads in ethnology, history and I my own ethnography work, I try to understand the place of the new organization in the sociopolitical dynamic of Yanomami and its implication for the local groups and also in the relationship between traditional and youth leaders. I try to show that speech and knowledge are the two major principles that connect the youth and traditional leaders; the choice of youth leaders as major political speaker does not mean the elder’s loss of power; the Yanomami see the presence of the youth in the meetings as necessary, due to the necessity of decoding their relationship with non-Indians.

Pavimentando Roraima: a BR-174 como exemplo das lógicas neoliberais de transnacionalização do território na Amazônia Ocidental

Abstract: Este artigo discute a pavimentacao da BR-174 na metade da decada de 1990 e as suas consequencias socioespaciais no estado de Roraima. O caso e apresentado como um exemplo da transformacao das intervencoes territoriais na Amazonia no contexto da neoliberalizacao do Estado e da producao de um espaco economico transnacional. Os investimentos federais para o desenvolvimento rodoviario e infraestruturas auxiliares trouxeram conectividade sem precedentes para o estado de Roraima, alem de gerar crescimento economico. Todavia, o artigo argumenta que, alem dos novos discursos de desenvolvimento regional sustentavel, as logicas dominantes dos projetos, tais como o melhoramento da BR-174, sao as de um neoliberalismo em expansao transnacional, no qual o Estado empreendedor torna-se um parceiro para o estabelecimento de mercados externos mais do que o principal agente da integracao do territorio nacional. Assim, no desenho da BR-174, Roraima aparece, principalmente, como um espaco estrategico de conexao transfronteirica que liga a Amazonia brasileira aos portos do Caribe. Entretanto, passada mais de uma decada desde a conclusao do projeto, a concentracao territorial tem se aprofundado ao passo que emergem novas desigualdades socioespaciais intimamente atreladas as funcoes e fluxos que a integracao rodoviaria criou.

Effect of grafting on the control of gummy stem blight in muskmelons

Abstract: Gummy stem blight, caused by Didymella bryoniae, is the most important fungal diseases of muskmelons cultivated in protected environments in Brazil Fungicides are used to control this disease, and little is known about the effectiveness of alternative control methods The aim of this study was to evaluate the effect of grafting on the control of gummy stem blight in four muskmelon hybrids The hybrids Bonus II, Sunrise, Louis and Prince hakusho were grafted onto the squash hybrid Shelper, which is immune to D bryoniae Two experiments were conducted, one in greenhouse with artificial inoculation of the pathogen and the other in protected environment using crop residues and soil infected with the pathogen Under greenhouse conditions, mycelial discs of the pathogen were inoculated onto the hypocotyl or at the union graft/rootstock region of the grafted plants and onto ungrafted plants of each hybrid By growing these four melon hybrids in a protected environment, the effect of grafting on the control of gummy stem blight could be studied When these melons were grown in the greenhouse or in a protected environment, grafting significantly reduced the growth of gummy stem blight in all four melon hybrids For grafted hybrid plants inoculated at the hypocotyl, the disease severity decreased by 341%, 338%, 511% and 480% for Sunrise, Bonus II, Louis and Prince hakusho, respectively, compared to ungrafted plants For grafted plants inoculated at the union graft/rootstock region, the disease severity decreased by 543%, 573%, 541% and 446%, respectively For melons grown in protected environments, grafting reduced the severity of gummy stem blight in the four melon hybrids by 343%, 348%, 458% and 496%, respectively Thus, grafting onto immune rootstocks significantly reduced the severity of D bryoniae in the four muskmelon hybrids grown under greenhouse and protected environment conditions