Environmental Impacts And Contamination
Mostrando 13-24 de 46 artigos, teses e dissertações.
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13. Endocrinologia e controle de vitelogênese em carrapatos / Endocrinology and control of tick vitellogenesis
Background: Ticks are distributed worldwide, with impacts on human and animal health. The cattle tick Rhipicephalus (Boophilus) microplus is the main parasite that affects livestock in tropical and subtropical regions of the world, causing large economical losses. Tick control methods are based on the application of chemical acaricides, which has resulted in
Publicado em: 2011
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14. Valores de referência de metais pesados em solos de Mato Grosso e Rondônia / Reference Values for heavy metals in soils from Mato Grosso and Rondônia states, Brazil
Os órgãos de monitoramento ambiental necessitam de indicadores de referência para a avaliação continuada dos impactos ambientais. Indicadores são obtidos por meio da comparação dos teores totais de elementos tóxicos de um solo com valores determinados em condições naturais (não poluídos) ou com valores de referência. No Brasil, com a crescente
Publicado em: 2011
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15. DinÃmica Geoambiental do Sistema HÃdrico MaceiÃ/Papicu / Dynamic Geoenvironmental System Hydride Maceià / Papicu
This research aims to analyse the geo-environmental features of the MaceiÃ/ Papicu Hydrical System relating the dynamic in the natural landscape to the human aspects. The survey is based on the process of degradation from occupation considering the changes and their consequences to the environment. By means of the visual interpretation of the AUMEF 1978 air
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2010
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16. Implementação e aplicação de metodologia para dosagem de metais e não metais em águas de drenagem de solo adubados com fosfogesso
Phosphogysum is a waste generated in phosphoric acid production by the wet process. The immense amount of phosphogysum yearly produced (around 150 million tons) is receiving attention from environmental protection agencies all over the word, given its potential of contamination. In Brazil, this material has been used for many decades, especially for agricult
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2010
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17. Impactos Socioambientais no EstuÃrio do Rio Jaguaribe: o Caso da Cidade de Aracati-Ce. / Social and Environmental Impacts on River Estuary Jaguaribe: If the City Aracati-Ce.
The Jaguaribe River was fundamental to the development of the city of Aracati. However, during recent decades a degradation of the fluvial and marine ecosystems caused by several environmental impacts has been perceived. Analyzing the social and environmental impacts at the estuary of the Jaguaribe River, highlighting the process of urban expansion from 1980
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2010
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18. RESÍDUOS DE AGROINDÚSTRIAS FAMILIARES: IMPACTOS NA QUALIDADE DA ÁGUA E TRATAMENTO COM TÉCNICAS SIMPLIFICADAS / WASTE OF AGRO-INDUSTRY FAMILY: IMPACT ON WATER QUALITY AND TREATMENT WITH TECHNIQUES SIMPLIFIED
Human activities have altered the environmental quality especially with regard to water sources. The agro-industry activity in small scale may represent a potential pollutant different from those of other agricultural activities, and, therefore, there is the need to search alternatives to minimize its impacts. This work aims to: (a) assess the quality and qu
Publicado em: 2010
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19. COMUNIDADE DE ALGAS EPIFÍTICAS (COM ÊNFASE EM DIATOMÁCEAS) EM 23 VEREDAS DO ESTADO DE GOIÁS SOB DIFERENTES IMPACTOS AMBIENTAIS / Epiphytic algae community (with emphasis on diatoms) of Palm swamps of Goias State
(Epiphytic algae community of (with emphasis on diatoms) of Palm swamps of Goias State). The present study is the first to evaluating epiphytic algae community structure of in the subsystem Palm swamps in the Cerrado. The general hypotheses of this study were: impacted Palm swamps are under greater influence of allochthonous material, causing changes in limn
Publicado em: 2010
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20. Contaminação biológica e o uso de animais de montaria no Parque Nacional da Serra do Cipó - MG / Biological contamination and horse hiding in the Serra do Cipó National Park MG
Serra do Cipó National Park has undergone a major management challenge that is the definition of the use of horse riding by the visitors. Recently, the Brazilian Government launched a document entitled Diretrizes para visitação em unidades de conservação (Guidelines for visitation in protected areas) which dictates certain rules for recreation ecology a
Publicado em: 2010
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21. Seleção de áreas aptas a disposição de lodo de estações de tratamento de esgoto com fins agrícolas / Selection of areas suitable for the disposal of sludge stations sewage treatment for agriculture
Overcrowding in urban centers has spawned many impacts on the environment, highlighting the waste generated by their activities. To properly allocate these wastes, technologies are developed such as those involved in sewage treatment. However, this form of treatment also generates waste, which must be treated and disposed of properly. The sludge is a byprodu
Publicado em: 2010
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22. Diagnóstico ambiental urbano da cidade de Novo Airão - Amazonas
Most of Brazils municipalities are suffering environmental impacts. This situation is worse when we talk about small towns, where the framework for environmental policies is still precarious. In this ambit, when it comes to the urban planning of cities in the Brazilian Amazon, the situation is different, because the cities in the countrys northern region usu
Publicado em: 2009
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23. ProposiÃÃo do uso de indicadores ambientais na avaliaÃÃo de desempenho de portos brasileiros
This work aims to demonstrate the possibility of inclusion of environmental indicators in the Current Port Performance System (SDP) used to evaluate the Brazilian ports. The environmental indicators are very important because of the scope of the environmental issue and, when used properly, can be effective in preventing impacts to the environment. In port ma
Publicado em: 2009
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24. Qualidade ambiental de solos agrícolas da bacia do Rio Jaguari -São Paulo / ENVIRONMENTAL QUALITY OF AGRICULTURAL SOILS WITHIN THE JAGUARI RIVER BASIN - SÃO PAULO
Environmental impacts have occurred in various forms and intensities on soil, water and air media. Consequently, several countries have used legal criteria for soil protection, either by means of generic guiding values or through case-by-case risk assessment. The São Paulo Environmental Agency (CETESB) pioneered the publication of guiding values for soils a
Publicado em: 2009