Navegando por Autor "BACELAR, Maria Denise Ribeiro"

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Acesso aberto (Open Access)
Epidemias de malária no Pará e sua relação com os padrões de uso da terra nos últimos quarenta anos: uma análise com sistema de informação geográfica
(Universidade Federal do Pará, 2009) BACELAR, Maria Denise Ribeiro; VENTURIERI, Adriano; http://lattes.cnpq.br/8968863324073508
This study aimed to investigate the relationship between the occurrence of malaria epidemics in Para State and the types of space occupation observed there, configured in the main uses of land in the period from 1970 to 2007, seeking to verify the hypothesis that malaria epidemics in Para has been a consequence of space occupation methods (use of the land). So, we tried to examine statistically the relationship between the rates of malaria and population and population and predominant production activities in Para and its regions and the evolution of these variables over time. Also, four villages were selected in Para (one per geographical region), located in the pioneer occupation area in the State, one of them was elected the control village in the study and they were all mapped in order to analyze temporal dynamics of its landscapes over the years 1975, 1991 and 2008. In the selected villages − Itaituba, Anajas, Tucurui and Juruti, − the main landscape types established were identified, and their temporal evolution analyzed, in attempt to verify the existence or not of a cause-effect relationship between these models of landscape and the malaria occurrence in these locations in the period investigated. It was possible to demonstrate in this study, by the data investigated, its historical evolution and statistical correlations, the hypothesis that malaria epidemics in Para in that period, is a consequence of misconducted occupation processes, resulting from government policies introduced in the region after 1970. Similarly, a cause-effect relationship between production activities introduced in the Region and malaria epidemics reported here proved evident. A relevant fact is that geographical occurrence of malaria in the State remains epidemic in areas, as investigated here, where primary production activities are performed using no environmentally correct methods.
Acesso aberto (Open Access)
Exposição humana ao metilmercúrio em comunidades ribeirinhas da Região do Tapajós, Pará, Brasil
(2000-06) PINHEIRO, Maria da Conceição Nascimento; NAKANISHI, Junko; OIKAWA, Teiichi; GUIMARÃES, Geraldo de Assis; QUARESMA, Manoel; CARDOSO, Bernardo da Silva; AMORAS, Walter Wanderley; HARADA, Masazume; MAGNO, Carlos; VIEIRA, José Luiz Fernandes; XAVIER, Marília Brasil; BACELAR, Maria Denise Ribeiro
Evaluation of total human exposure to mercury and methylmercury was effected in riverine villages along the Tapajos river and in the metropolitan area of Belem city, state of Para, Brazil, by using total mercury and methylmercury concentrations in hair samples in 1994 and 1995. It was observed that average concentrations of total mercury are in a range from 2 ± 1µg/g-1 to 20.5 ± 12.1µg/g-1. While methylmercury average concentration varies from 1.4 ± 0.7µg/g-1 to 18.5 ± 11µg/g-1. These results confirm mercury contamination in the Tapajos river and possible appearance of mercury intoxication symptoms, and recommends the monitoring of compounds in hair samples as well as the need for epidemiological and clinical studies for human health prevention and control of mercury intoxication.