Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 39 )

2018 ( 43 )

2017 ( 44 )

2016 ( 61 )

Custom range...

Search Results: 1 - 10 of 24095 matches for " Aldo Pacheco Ferreira "
All listed articles are free for downloading (OA Articles)
Page 1 /24095
Display every page Item
Estimation of heavy metals in little blue heron (Egretta caerulea) collected from sepetiba bay, rio de janeiro, brazil
Ferreira, Aldo Pacheco;
Brazilian Journal of Oceanography , 2010, DOI: 10.1590/S1679-87592010000400002
Abstract: samples of liver and kidney of little blue heron (egretta caerulea) collected on sepetiba bay, rio de janeiro, brazil, were analysed for their copper, zinc, cadmium, lead, chromium and nickel content. mean concentration levels in liver and kidney (μg.g-1 dry weight) were 6.32955 and 6.57136 (cd); 78.17409 and 96.89409 (zn); 44.01727 and 65.20864 (cu); 41.15091 and 39.62318 (pb); 2.80091 and 4.16455 (cr); and 9.27182 and 9.91091 (ni), respectively. results indicate relatively high trace metal contamination in e. caerulea, showing potential widespread biological and mutagenic adverse effects at trophic levels, and therefore, signalling risk to human health.
Caffeine as an environmental indicator for assessing urban aquatic ecosystems
Ferreira, Aldo Pacheco;
Cadernos de Saúde Pública , 2005, DOI: 10.1590/S0102-311X2005000600038
Abstract: this study aimed to evaluate the co-occurrence of caffeine and the extent of its influence as compared to other traditional water quality parameters (microbiological and physico-chemical) in order to characterize it as an efficient indicator of anthropic pollution of urban aquatic environments. caffeine is an ingredient in a variety of beverages (coffee, tea, and caffeinated soft drinks) and numerous food products (chocolate, pastries, and dairy desserts). although the human body metabolizes this stimulant efficiently, between 0.5 and 10.0% is excreted, mostly in the urine. analysis of water samples from the leopoldina basin and guanabara bay revealed a significant difference between areas not commonly affected by nutrient enrichment or sewage inputs and areas chronically influenced by sewage discharges and elevated eutrophication. monitoring caffeine will be fundamental in stressed urban aquatic environments where frequent accidental ruptures of sewer lines and discharges of untreated effluents impede effective water quality evaluation with traditional indicators.
Beneficios terapéuticos por empleo de los animales de compa?ía en el cuidado de salud de las personas mayores
Revista Gerencia y Políticas de Salud , 2012,
Abstract: objective: this article evaluated the compatibility of human-companion animal relationships, which were explored from the perspective of emotional and psychological benefits of companion animals. the main aims were to develop a measure of pet attachment that reflects psychologists' use of the attachment concept, and to see if pet ownership or attachment added to the health variance explained by known predictors. method: community-older adults (n=267) gave information by interview using structured questionnaire. multiple regressions were then conducted to examine the possible predictive role of health habits, human social supports, pet ownership, and owners' attachment to the pet, on health and well-being. results: this study confirm the results of therapeutic profit by companion animals' employment in health care of older people, which can make a difference to the health status levels. conclusion: the aging process involves new demands for services, benefits and attention that constitute challenges for governments and society.
Environmental Fate of Bioaccumulative and Persistent Substances - A Synopsis of Existing and Future Actions
Pacheco Ferreira,Aldo;
Revista Gerencia y Políticas de Salud , 2008,
Abstract: bordered by risks arising from their massive technical progress, the risk society sees surprised the confidence in the science and the public authorities in the proportion of accidents occur and side effects are impossible to be anticipated and prevented. thus, gaining prominence concepts such as chemical safety. the extent that it has reached new technologies in time and space makes it impossible to predict all its negative side effects, and in front of that uncertainty, it is the precautionary principle. the environmental and health issues related to the persistent organic pollutants (pops) are an excellent example of the need for adoption of the precautionary principle, because only when the pollution with these contaminants have reached global proportions that it was impossible to prove its harmful effects to human and animal health. aiming to reduce and eliminate some of the most dangerous pops, the convention was signed in stockholm in 2001, but the lack of financial resources in developing countries and the powerful lobby of multinational corporations in the chemical industry could jeopardize the implementation of this important multilateral treaty.
Evidence of social and environmental vulnerability in Sepetiba Bay: an analysis of risk situations
Aldo Pacheco Ferreira
Revista Brasileira em Promo??o da Saúde , 2009,
Abstract: Objective: To identify, among the population of Sepetiba Bay, risk situations of environmental vulnerability. Methods: Data collection was performed through a self-administered questionnaire with open and closed questions in a determined population of 895 subjects, between 2007 and 2009. The techniques used consisted of semi-structured interviews, structured questionnaires and participant observation (triangulation of methods). After the validation of the instrument by stages (face validity, content validity and construct validity),the main risks reported by the subjects were determined. Results: A total of 675 environmental risk situations was detected, especially the contamination of the water, soil and air; the waste; the impact on flora and social demands. It was observed that the same risk may simultaneously affect more than one location, emphasizing that one same problem was mentioned in more than one location of the bay. Conclusions: The results support the hypothesis guiding the research that the environment is part of the culture of a particular community or group as a process of interaction between cultural and natural environment.
Aldo Pacheco Ferreira
Revista Uniandrade , 2011,
Abstract: Samples of liver and kidney of Kelp gull (Larus dominicanus) collected on Sepetiba Bay, Rio de Janeiro, Brazil, were analysed for their copper, zinc, cadmium, lead, chromium and nickel content. All the analyses were made using the inductively coupled plasma optical spectrometry method (ICP-OES). The investigation focused on the variability of the elements content in kidney and liver from a number of sampling seabirds and over different seasons. The results were interpreted using the analysis of variance test (ANOVA). This has revealed differences in concentration for the majority of elements with regard to organs, and how different sampling metals and organs are related to each other. Results indicate relatively high trace etalcontamination in L. dominicanus, showing potential power of idespread biological and mutagenic adverse effects in trophic levels, and herefore, signalling risk to human health.
Aldo Pacheco Ferreira
Revista Uniandrade , 2010,
Abstract: Concentra es de metais tra o:chumbo, zinco, cromo, cádmio, níquel e cobre foram estimadas em Atobá-pardo (Sulaleucogaster), colhidos na Baía da Ilha Grande, Rio deJaneiro, Brasil. Os níveis médios de concentra o no fígado e no rim (μg.g-1 de peso seco), respectivamente foram 6,32955 e 6,57136 (Cd); 78,17409e 96,89409 (Zn); 44,01727 e 65,20864 ( Cu); 41,15091 e 39,62318 (Pb); 2,80091 e4,16455 (Cr) e 9,27182 e 9,91091 (Ni). Os resultados indicam níveis relativamente elevados de contamina o por metais tra o em S.leucogaster e os dados obtidos s o preocupantes pela extens o que pode causar para o nível trófico da fauna marinha na regi o estudada.
Ocorrência e fatores de risco da criptosporidiose em felinos de companhia de idosos
Pereira, Cassia Regina Alves;Ferreira, Aldo Pacheco;
Revista Brasileira de Geriatria e Gerontologia , 2012, DOI: 10.1590/S1809-98232012000400009
Abstract: the prevalenceof cryptosporidiosiswas analyzed indomestic catsand in theirelderly owners (over 60 yearsof age) of bothsexes, residentsinthe cityofteresópolis,andwho were attendedby avaccination against influenza in 2009and2010. the prevalence ofdiarrheainthe elderlywas29.4%and24.5% incats. it wasidentifiedthe presence ofone ormoreoocysts in fecal material in16.7% of elderly,and 12.7% incats. theprevalenceofdiarrheashowedstrongassociation inelderly people (pr=4.37, 95% ci: 2.67 to 7.16), and lower strengthof association in cats(pr=2.16, 95% ci: 1.06 - 4.39). byimmunofluorescenceconfirmedbypcr there was similarstrength ofassociationinelderly people (pr=4.43, 95% ci: 3.04 to 6.45), buttherewasanincrease in thestrengthof associationforfelines(pr = 4.67, 95% ci: 3.9 to 6.81). thefindings fromthisresearch are disturbing, but importanttopublic health, as they showthe relationshipofzoonoticcryptosporidiumspp. presentinfecal samplesofcompanion animalsfromthe population elderly studied.
Modelagem matemática para avalia??o dos efeitos de despejos organicos nas condi??es sanitárias de águas ambientais
Cunha, Cynara de Lourdes da Nóbrega;Ferreira, Aldo Pacheco;
Cadernos de Saúde Pública , 2006, DOI: 10.1590/S0102-311X2006000800020
Abstract: this article provides an overview of emerging trends in environmental approaches to wastewater management in the developing world. organic matter present in wastewater is one of the main sources of water pollution. in large amounts it can increase the number of microorganisms and thus the excessive consumption of dissolved oxygen in the metabolic processes of its utilization and stabilization, leading to the disappearance and extinction of aerobic organisms, favoring the appearance of other life forms in anaerobic conditions, often producing toxic residues. the main focus of this article is to analyze the presence of organic matter in urban sewage using a water quality model whose main parameters are dissolved oxygen and biochemical oxygen demand. wastewater management methodologies can contribute to public health, sanitation, and improved conservation of water resources.
Exposure assessment and the risk associated with trihalomethanes compounds in drinking water
Aldo Pacheco Ferreira,Cynara de Lourdes Nóbrega da Cunha
Revista Brasileira em Promo??o da Saúde , 2012,
Abstract: Objective: To measure the concentrations of trihalomethanes (THMs) in marshland of Jacarepaguá drinking water, Rio de Janeiro-RJ, Brazil, and their associated risks. Methods: Two hundred houses were visited and samples were collected from consumer taps water. Risksestimates based on exposures were projected by employing deterministic and probabilistic approaches. Results: The THMs (dibromochloromethane, bromoform, chloroform, and bromodichloromethane) ranged from 3.08 μg/l to 129.31 μg/l. Non-carcinogenic risks induced by ingestion of THMs were below the tolerable level (10-6). Conclusion: Dataobtained in this research demonstrate that exposure to drinking water contaminants andassociated risks were higher than the acceptable level.
Page 1 /24095
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.