Simulaçao hidrológica com o uso de chuva estimada por satélite

Orientador: Alexandre Kolodynskie GuetterInclui apendiceDissertaçao (mestrado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduaçao em Recursos Hídricos e Ambientais. Defesa: Curitiba, 2006Inclui bibliografi

ECONOMIA E SUBJETIVIDADE DIANTE DA CRISE NEOLIBERAL

Este trabalho explora a ideia de neoliberalismo e suas características como modelo econômico e político e como um modo de subjetividade que se destaca na apreensão dos princípios desse modelo no âmbito da vida pessoal e profissional dos indivíduos. Realizou-se uma pesquisa social de abordagem qualitativa e finalidade descritiva-interpretativa, por meio do procedimento bibliográfico. Concluiu-se pela percepção de uma crise sistêmica no neoliberalismo, que se utiliza das mídias como meio ideológico de sustentação e da instrumentalização de crises econômicas como modo de encontrar novas estruturas de manutenção da acumulação do capital

Justifications of Representative Democracy

The totalitarian regimes of the 20th century - Nazism, fascism and Stalinism - in the same way as the dictatorships of South America and Africa, gave the human community a profound reflection on the future. This literature review problematizes the justifications and limits of representative democracy. It discusses the mechanisms of improvement of the democratic process for greater popular participation in the decisive spheres of political life. The lack of popular participation and a possible disbelief with political representation deserve to be addressed in order to continuously actualize democracy as a political regime

Effects of nitrogen fertilization and seasons on the morphogenetic and structural characteristics of Piatã (Brachiaria brizantha) grass

The objective of this study was to evaluate the morphogenetic and structural characteristics of Piatã grass under rotational stocking and nitrogen fertilization during the seasons. A randomized complete block design in a split-plot arrangement with three replications was used. The main plots were the applications of 0, 150, 300 and 450 kg per ha of N in the form of urea, and the subplots were seasons of the year: late summer/fall, winter, spring and summer. No interaction was detected between nitrogen fertilization and season for leaf appearance rate, leaf lifespan, number of live leaves and final length leaves. However, an interaction (P<0.05) of nitrogen fertilization and season influenced leaf elongation rate, phyllochron, leaf senescence rate and stem elongation rate. The leaf elongation rate and leaf appearance rate were linearly affected (P<0.05) by nitrogen fertilization. The seasons affected (P<0.05) the leaf lifespan and number of life leaves. The leaf lifespan decreased by 0.06 days for each kg of N applied. On the other hand, the number of live leaves increased by 0.0026 leaves/tiller for each kg of N. Fertilization with nitrogen positively affects morphogenetic and structural characteristics of Piatã grass under rotational stocking. This effect can be optimized during rainy periods in spring and late summer/autumn.The objective of this study was to evaluate the morphogenetic and structural characteristics of Piatã grass under rotational stocking and nitrogen fertilization during the seasons. A randomized complete block design in a split-plot arrangement with three replications was used. The main plots were the applications of 0, 150, 300 and 450 kg per ha of N in the form of urea, and the subplots were seasons of the year: late summer/fall, winter, spring and summer. No interaction was detected between nitrogen fertilization and season for leaf appearance rate, leaf lifespan, number of live leaves and final length leaves. However, an interaction (P<0.05) of nitrogen fertilization and season influenced leaf elongation rate, phyllochron, leaf senescence rate and stem elongation rate. The leaf elongation rate and leaf appearance rate were linearly affected (P<0.05) by nitrogen fertilization. The seasons affected (P<0.05) the leaf lifespan and number of life leaves. The leaf lifespan decreased by 0.06 days for each kg of N applied. On the other hand, the number of live leaves increased by 0.0026 leaves/tiller for each kg of N. Fertilization with nitrogen positively affects morphogenetic and structural characteristics of Piatã grass under rotational stocking. This effect can be optimized during rainy periods in spring and late summer/autumn

Aviso de temperaturas extremas em Santa Catarina

O presente estudo teve por objetvo gerar um produto automatizado para aemissão diária de avisos de extremos de temperatura mínima e de temperatura máxima do ar em Santa Catarina para os dois dias próximos

Avanços e desafios da ciência de recursos hídricos no Brasil: uma síntese comunitária do XXIII Simpósio Brasileiro de Recursos Hídricos

In this paper we synthesize the special sessions of the XXIII Brazilian Water Resources Symposium 2019 in order to understand the major advances and challenges in the water sciences in Brazil. We analyzed more than 250 papers and presentations of 16 special sessions covering topics of Climate Variability and Change, Disasters, Modeling, Large Scale Hydrology, Remote Sensing, Education, and Water Resources Management. This exercise highlighted the unique diversity of natural and human water features in Brazil, that offers a great opportunity for understanding coupled hydrological and societal systems. Most contributions were related to methods and the quantification of water phenomena, therefore, there is a clear necessity for fostering more research on phenomena comprehension. There is a vast network of co-authorship among institutions but mostly from academia and with some degree of regional fragmentation. The ABRhidro community now has the challenge to enhance its collaboration network, the culture of synthesis analysis, and to build a common agenda for water resources research. It is also time for us to be aligned with the international water science community and to use our experiences to actively contribute to the tackling of global water issues.Este artigo apresenta uma síntese das sessões especiais do XXIII Simpósio Brasileiro de Recursos Hídricos 2019, com o objetivo de compreender os principais avanços e desafios em recursos hídricos no Brasil. Foram analisados mais de 250 trabalhos e apresentações em 16 sessões especiais abrangendo temas como Variabilidade e Mudanças Climáticas, Desastres, Modelagem, Hidrologia de Grande Escala, Sensoriamento Remoto, Educação e Gestão de Recursos Hídricos. Esta avaliação destacou a diversidade única de atributos naturais e antrópicos dos recursos hídricos brasileiros, que oferece uma grande oportunidade para aprendizado sobre sistemas hidrológico e humano acoplados. A maioria das contribuições é relacionada a métodos e quantificação de fenômenos hídricos, existindo uma necessidade clara de incentivo a mais pesquisas em compreensão de fenômenos. Existe uma vasta rede de coautores, mas principalmente da academia e com certo grau de fragmentação regional. A comunidade da ABRhidro tem o desafio de aumentar a sua rede de colaboração, a cultura de análises de síntese, e construir uma agenda comum para a pesquisa em recursos hídricos. Também é o momento de alinhar esforços com a comunidade de recursos hídricos internacional, usando nossas experiências para contribuir ativamente na solução de questões relacionadas à água em nível global

Monitoramento da qualidade do ar no campus Três Poços em termos de partículas totais em suspensão

Segundo o INEA, Poeiras em suspensão no ar diminuem a capacidade de remoção das partículas pelo sistema respiratório e potencializam os efeitos dos gases. O objetivo desta pesquisa é monitorar a qualidade do ar no campus Três Poços do UniFoa, em termos de partículas totais em suspensão na bacia aérea local. Os resultados permitem um acompanhamento da qualidade do ar em todo o campus para um diagnóstico. Foram consideramos dados da estação meteorológicaem Volta Redonda – RJ. O monitoramento foi feito pelo Amostrador de Grande Volume para Partículas Totaisem Suspensão AGV PTS, o qual determina concentrações de partículas totais em suspensão (PTS). O equipamento foi calibrado por um calibrador portátil aferido pela empresa ENERGÉTICA em 25 / 05 / 2009 com prazo de validade 25 / 05 / 2010. O resultado da pesquisa é importante para todos os frequentadores do campus Três Poços, pois a qualidade do ar afeta o Meio Ambiente, a saúde e a qualidade de vida dos mesmos

Stress granules, RNA-binding proteins and polyglutamine diseases: too much aggregation?

Stress granules (SGs) are membraneless cell compartments formed in response to different stress stimuli, wherein translation factors, mRNAs, RNA-binding proteins (RBPs) and other proteins coalesce together. SGs assembly is crucial for cell survival, since SGs are implicated in the regulation of translation, mRNA storage and stabilization and cell signalling, during stress. One defining feature of SGs is their dynamism, as they are quickly assembled upon stress and then rapidly dispersed after the stress source is no longer present. Recently, SGs dynamics, their components and their functions have begun to be studied in the context of human diseases. Interestingly, the regulated protein self-assembly that mediates SG formation contrasts with the pathological protein aggregation that is a feature of several neurodegenerative diseases. In particular, aberrant protein coalescence is a key feature of polyglutamine (PolyQ) diseases, a group of nine disorders that are caused by an abnormal expansion of PolyQ tract-bearing proteins, which increases the propensity of those proteins to aggregate. Available data concerning the abnormal properties of the mutant PolyQ disease-causing proteins and their involvement in stress response dysregulation strongly suggests an important role for SGs in the pathogenesis of PolyQ disorders. This review aims at discussing the evidence supporting the existence of a link between SGs functionality and PolyQ disorders, by focusing on the biology of SGs and on the way it can be altered in a PolyQ disease context.ALG-01-0145-FEDER-29480, SFRH/BD/133192/2017, SFRH/BD/133192/2017, SFRH/BD/148533/2019info:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio