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Search Results: 1 - 10 of 41499 matches for " Francisco;Costa "
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The Dog as a Risk Factor in Transmission of Visceral Leishmaniasis: A Review  [PDF]
Francisco Assis Lima Costa
Advances in Infectious Diseases (AID) , 2012, DOI: 10.4236/aid.2012.22006
Abstract: Visceral leishmaniasis (VL) is a serious public health problem in Brazil and worldwide. Despite the euthanasia of dogs serologically positive, such action has not solved the endemic in Brazil. A risk area for VL involves the presence of the vector, the occurrence of canines and the record of human cases. The factors that have favored the persistence and spread of VL in Brazil are related to the predatory action of man on the environment, to the migratory movements and rural exodus, and a close coexistence of man and animals. Thus considering the epidemiological chain of VL, one fact seems clear: we do not know yet the true extent of the participation of the dog in the infectious cycle of VL. The clinical disease is an important indicator of the extent of the problem in an endemic area. The immunological events are complex and involve resistance and susceptibility to canine visceral leishmaniasis (CVL). One aspect in CVL is that many symptomatic dogs underwent xenodiagnosis not infect the vector. In such cases the pattern recognition receptors CD11b+, TLR2+, and NO present higher values for dogs with results in immunohistochemistry of skin and xenodiagnosis negative (IMH-/XENO-) than dogs with immunohistochemistry in skin and xenodiagnosis positive (IMH+/XENO+), suggesting that innate immunity modulates the competence of the dog to infect the vector. The organic response in CVL varies from individual to individual and within the same individual, with a strong evidence of being organ-specific. Only 20% of asymptomatic dogs have parasites in the skin and 15% are able to recover from clinical signs and eliminate the parasites spontaneously. In this review, we analyze the epidemiology of visceral leishmaniasis and clinical, immunological and pathological conditions that can contribute to understanding the role of dogs in transmission of visceral leishmaniasis.
Mercado de terras e trajetórias tecnológicas na Amaz?nia
Costa, Francisco de Assis;
Economia e Sociedade , 2012, DOI: 10.1590/S0104-06182012000200002
Abstract: the dynamics of the rural economy in the amazon has been observed through the phenomenon of deforestation and evaluated primarily by environmental risks and inequalities in distribution. the article indicates possibilities of change and, at the same time, demonstrates the obstacles to overcome. starting from the observation of the agrarian economy of the region as a totality in motion, it establishes the foundation of the development on six technological trajectories, explaining the asymmetries of capacity between them in the context of their relations with institutions. among these, special focus is led to the mediations that ensure production and land market. regarding the latter, the article indicates policy measures to constrain it.
A economia colonial do Gr?o-Pará: uma avalia??o crítica (1720-1822)
Costa, Francisco de Assis;
Economia e Sociedade , 2012, DOI: 10.1590/S0104-06182012000100008
Abstract: based on work of restoration of time series of some important economic variables that extend from 1720 to 1822, the paper aims to contribute to a vision of the amazonian colonial economy that emphasizes the global context - it means a demonstrated ability to assert itself as sub-system of the portuguese colonial empire in the context of world market. in discussing this capacity, the article evaluates the evolution of fundamental conditions of efficiency of the colony, considering them as determined by the peculiar features that assumed the local operation of the colonial project in gr?o-pará. these conditions, strongly characterized by the uniqueness of the natural foundations of the amazonian biome, are evaluated in reference to the institutional changes that mark in time the trajectory of the regional economy and society.
Lugar e significado da gest?o pombalina na economia colonial do Gr?o-Pará
Costa, Francisco de Assis;
Nova Economia , 2010, DOI: 10.1590/S0103-63512010000100005
Abstract: the historiography on the colonial period in the amazon involves an opposition between reality shaped by a colonial agricultural project and the occurrence of concrete situations of extractive economies, depending on the availability of capital to be applied in the main means of production: the black slave. so, a long period of scarcity of resources would have conformed a cycle of the extractive economy in the region dominated by the "drogas do sert?o", replaced with an agricultural cycle as the very result of pombal's management. this period would be the turning point for a dynamics determined by agriculture, which improved on by world market situations, particularly those linked to the independence war in the usa, would find significant limitation only with the emergence of the new cycle centered on extractive rubber, which began around the second half of the xix century. the results discussed here do not show that pombal's period is the moment when finally the foundations of the amazon economy were established. in fact, it was a vital and creative time for a trajectory, which even though started almost ? of a century before, imposed itself marking the reforms of the period, which in turn conditioned indelibly the history of the region.
Corpora??o e economia local: uma análise usando Contas Sociais Alfa (CSα) do programa de investimentos da CVRD no Sudeste Paraense (2004 a 2010)
Costa, Francisco de Assis;
Nova Economia , 2008, DOI: 10.1590/S0103-63512008000300004
Abstract: the southeast region of the state of pará has been an extraordinarily dynamic area. the great cattle ranching projects financed by the sudam were implemented there the sixties, which confronted the old brazil nut extraction structures and the expansion of family farming both spontaneous and induced, along with major mineral projects and gold mining prospectors. as parts of the process, important structural transformations took place reinforcing the role of the urban centers and their local rural bases in the logistics of new economic sectors conditioned by the formation of the mining economy. this mining economy was a result of the presence of the vale do rio doce company (cvrd), which has operated its north-system of ferrous metals based in carajás since 1985. the article presents the results of an input-output analysis with button-up methodology that calculates the economic impacts of the investment program of cvrd from 2004 to 2010, on both the rural and urban local economy and also on the rest of para state and of brazil.
Quest?o agrária e macropolíticas para a Amaz?nia
Costa, Francisco de Assis;
Estudos Avan?ados , 2005, DOI: 10.1590/S0103-40142005000100009
Abstract: the strategic statements of the pt government that started in early 2003 reaffirm the need for the country to develop based on the expansion of the domestic market, model that, in your general lines, is guiding internal discussions and political performances of the pt since long. they place, however, two innovations of great meaning: the guarantee of a macroeconomic stability as presupposition of the development and the environmental sustainability as its attribute. the combination of those three elements produces great challenges for the federal government and thus could generate inconsistencies among the solutions thinking brazil as a whole and the peculiar conditions of the amazon subject. it urges to explain such inconsistencies and to indicate modes to overcome them.
Políticas de conten??o de desmatamento, produ??o e mercado de terras na Amaz?nia: um ensaio sobre a economia local do sudeste paraense usando contas sociais alfa (CSα)
Costa, Francisco de Assis;
Estudos Econ?micos (S?o Paulo) , 2011, DOI: 10.1590/S0101-41612011000300006
Abstract: the current discussion on avoiding carbon emission associated to agricultural use of land needs a more systemic approach, whether in regard to the economic flows properly and their interactions, whether in terms of the institutional environment that ensures them. given that avoiding deforestation schemes implicate resources input-output throughout local economies and broader economic context, it seems fundamental to discuss what are the final impacts of those flows. the basic questions are: a) how such policies, starting from the rural sectors, will affect final demand, the value of the production and the variables of value added all over the economy and b) how variations in the economy affect the forms of use of natural resources and, therefore, deforestation itself. related to institutions, the article puts special emphasis on defining the market for land, because it is the core of vital issues. the article uses an ascending model to generate input-output matrices for local economies based on primary products, where works a market for land, incorporates an algorithm of carbon balance, finds the multipliers of the economy of southeastern pará and simulates four situations of policies on avoiding deforestation. the main conclusion is that policies for avoiding deforestation will probably have a hard time if not part of macro development policy on local level.
Mercado e produ??o de terras na Amaz?nia: avalia??o referida a trajetórias tecnológicas
Costa, Francisco de Assis;
Boletim do Museu Paraense Emílio Goeldi. Ciências Humanas , 2010, DOI: 10.1590/S1981-81222010000100004
Abstract: the dynamics of the rural economy in the amazon has been observed through the phenomenon of deforestation and evaluated primarily by environmental risks and distribution inequalities associated with that. the article shows possibilities of change. at the same time, demonstrates the obstacles to overcome. starting from the observation of the agrarian economy of the region as a totality in motion, establishes the foundation of this development on six technological trajectories, explaining the asymmetries of capacity between them in context of their relations with the institutions. among these, special focus is led to the mediations which ensure the production and market for land.
Fronteiras da Identidade: O caso dos macaenses em Portugal e em Macau
Costa,Francisco Lima da;
Sociologia, Problemas e Práticas , 2004,
Abstract: globalization, cosmopolitanism and identity are key-words to understanding the contemporary world. though apparently contradictory, they are, in fact, complementary. this article discusses the re-writing of the history of macau and the contextual nature of identity. we shall analyze the ethnicization process of the macanese identity and the way in which its inclusion in both the portuguese-speaking linguistic area and the political area with the chinese formula of "one country, two systems" is co-ordinated and negotiated. a target of analysis will be the repercussions of these options on the recasting of reference points of macanese identity.
Arranjos e Sistemas Produtivos e Inovativos Locais – As Possibilidades do Conceito na Constitui o de um Sistema de Planejamento para a Amaz nia
Francisco de Assis Costa
Revista Brasileira de Inova??o , 2006,
Abstract:
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