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| Registros recuperados: 27 | |
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| Almeida, Fabiane Ferreira de; Instituto Nacional de Pesquisas da Amazônia - Programa de Pós-Graduação em Biologia de Água Doce e Pesca Interior; Melo, Sérgio; Instituto Nacional de Pesquisas da Amazônia. |
| Este estudo aborda a variação temporal (sazonal, semanal e nictemeral) e espacial de algumas variáveis limnológicas na região limnética do lago Catalão, um lago da planície de inundação do rio Amazonas. Foram analisados os valores de temperatura, zona eufótica, zona de mistura, condutividade elétrica, oxigênio dissolvido, transparência, nitrogênio e fósforo total, amostrados em quatro estações, em escala semanal, durante um mês no período de seca de 2006 e um mês no período de cheia de 2007. Regressões simples foram realizadas para testar a hipótese da homogeneização de ambientes aquáticos em função da inundação. Foram analisados, também, os valores de temperatura, oxigênio dissolvido e condutividade elétrica em um perfil vertical ao longo de um ciclo... |
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Palavras-chave: 2.05.02.00-1 variáveis limnológicas; Variação nictemeral; Planície de inundação; Variação sazonal; Pulso de inundação; Amazônia Brasileira Ecologia de Ecossistemas (Limnologia) limnological variables; Diel variation; Flood plain lake; Seasonal variation; Flood pulse; Brazilian Amazon. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4641 |
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| AMORIM,MARÚCIA I. M.; MERGLER,DONNA; BAHIA,MARCELO O.; DUBEAU,HÉLÈNE; MIRANDA,DANIELA; LEBEL,JEAN; BURBANO,ROMMEL R.; LUCOTTE,MARC. |
| The mercury rejected in the water system, from mining operations and lixiviation of soils after deforestation, is considered to be the main contributors to the contamination of the ecosystem in the Amazon Basin. The objectives of the present study were to examine cytogenetic functions in peripheral lymphocytes within a population living on the banks of the Tapajós River with respect to methylmercury (MeHg) contamination, using hair mercury as a biological indicator of exposure. Our investigation shows a clear relation between methylmercury contamination and cytogenetic damage in lymphocytes at levels well below 50 micrograms/gram, the level at which initial clinical signs and symptoms of mercury poisoning occur. The first apparent biological effect with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Amazon; Mercury; Mitotic Index; Cytogenetics. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000400004 |
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| Silva,Leila da; Miranda,Angélica; Batalha,Rosieny; Ferreira,Luiz; Santos,Mayara; Talhari,Sinésio. |
| ABSTRACT OBJECTIVE: The goal of this study was to determine the prevalence of human papillomavirus infection infection and cervical lesions and its associated factors among HIV infected women attending an AIDS clinic in Amazonas state, Brazil. METHODS: Cross-sectional study. Women attending an AIDS clinic in the city of Manaus between March and December 2011 for gynecological examination were invited to participate. Enrolled patients answered a standardized interview including demographical, behavioral, and clinical data. Additionally, patients underwent a gynecological evaluation with collection of cervical samples for cytological analysis and high-risk human papillomavirus infection hybrid capture. A blood sample was also obtained to determine CD4... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HPV; HIV; Cervical cancer; Brazilian Amazon. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702015000600557 |
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| Fernandes,Marcus Emanuel Barroncas; Costa,Lanna Jamile Corrêa da; Andrade,Fernanda Atanaena Goncalves de; Silva,Lucila Pereira. |
| We evaluate the relationship of positive cases of rabies with the continuing expansion of livestock production, and analyse the trends of this zoonosis in human population in the state of Pará, Brazilian Amazon. The distribution of rabies cases was recorded between 1999 and 2004. Of 148 cases of rabies, 21% were in humans and 79% in non-human mammals. The rapid growth in livestock numbers seems to be associated with the increase of positive cases in bovine livestock transmitted by vampire bats. This idea is supported by positive and significant relationship of both events in time (p < 0.01), but failed when spatial distribution among regions of the state was considered. However, rabies cases tend to occur toward the northeastern of the state of Pará,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Amazon; Humans and non-humans; Lyssavirus; Rabies. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200020 |
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| Magalhães-Matos,Paulo Cesar; Silva,Michele Bahia do Vale; Souza,Paulo Geovani Silva; Lima,Danillo Henrique da Silva; Morais,Rodrigo de; Farias,Diana Maria de; Alvarenga,Laís Cristina Oliveira; Gabriel,Áurea Martins; Oliveira,Wanessa Batista Lima; Góes-Cavalcante,Gustavo; Scofield,Alessandra. |
| ABSTRACT: The objective of this study was to detect helminth eggs and protozoan oocysts in samples of feces from birds of the order Passeriformes in Para State, Brazil. Fecal samples were collected individually from 403 passerine birds seized and kept in captivity in Para State. Samples were processed by the double centrifugation technique in saturated sucrose solution and the coccidial oocyst-positive samples were submitted to sporulation in potassium dichromate 2.0%. Helminth eggs and/or protozoan oocysts were observed in 43.18% (174/403) of the fecal samples examined. Coccidial oocysts were detected in 93.68% (163/174) of the positive samples, whereas helminth eggs were observed in 10.34% (18/174) of the positive samples. Oocyst sporulation occurred in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Passerine birds; Endoparasites; Coccidia; Helminths; Brazilian Amazon. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202177 |
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| Registros recuperados: 27 | |
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