Mercury in soils and sediments from gold mining liabilities in Southern Amazonia

The 1980-1990 Amazonian gold rush left an enormous liability that increasingly has been substituted by developing fish aquaculture. This work aimed at the identification of the mercury levels in the environment, associated with fish farms located in the North of Mato Grosso State, Southern Amazon. Sediment and soil samples were analyzed for total organic carbon and total mercury. Results indicate that the chemical characteristics of the sediment largely depend on the management procedures of the fish pond (liming, fish food used and fish population). The soils presented relatively low concentrations when compared with other data from the literature.

Efeito da escória de siderurgia na nutrição e desenvolvimento inicial de eucalipto

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Estudo do potencial do licor pirolenhoso como aditivo em condicionador de solo e no crescimento inicial de eucalipto

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Avaliação de processos de caracterização e remediação de passivos ambientais de contaminação por hidrocarbonetos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Sistematização e avaliação de técnicas de investigação aplicadas à caracterização e diagnóstico de área contaminada por hidrocarbonetos de petróleo

Pós-graduação em Geociências e Meio Ambiente - IGCE

Gerenciamento de resíduos sólidos em indústria de cerâmica: estudo de caso

Pós-graduação em Geociências e Meio Ambiente - IGCE

Conforto térmico em edificações

Pós-graduação em Engenharia Mecânica - FEG

Análise da sustentabilidade na bacia do Rio Corumbataí (SP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise do Programa Município VerdeAzul na Unidade de Gerenciamento de Recursos Hidricos do Pontal do Paranapanema

The increasing degradation of the environment and the depletion of natural resources, caused by indiscriminate production practices, by current and unlimited human needs and also misconceptions that natural resources are inexhaustible, make current and future environment situation, a constant concern of national and world leaders. With the purpose to confront these issues and to qualify the cities on the environmental situation in the state of São Paulo, the Department of the Environment created, in 2007, the Program “Município VerdeAzul. This paper aims to the study this program of Unit Water Resources Management Pontal Paranapanema through specific analysis of data representing the efficiency of the program directives and a comparative study between two cities unit with discrepant scores and a survey of the possible causes of obtaining low scores for municipalities participating in the project. For such a method was used that consisted of a bibliographical survey related to the main environmental liabilities Brazilians... (Complete abstract click electronic access below)

Estudo comparativo entre o modelo analítico de Domenico (1987) e Wexler (1992) e suas implicações no gerenciamento de passivos ambientais

Pós-graduação em Geociências e Meio Ambiente - IGCE

Evaluation of area contaminated by wood treatment activities: genetic markers in the environment and in the child population

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Concepção detalhada de uma bancada para simular esforços mecânicos em colunas de perfuração

In this work we study the construction of a test rig made to simulate the Mechanical efforts in wich a drillstring is submitted. The model is based on the rig built at IDS, Germany. There are some fault liabilities while doing the project of the axis. Therefore it's important to analyze and take knowledge of this efforts in order to predict failures like rupture or fatigue collapse. The main objective of this theis is to show the operating principle of the test rig and it's construction. The accomplished study allow us to predict the drillstring behavior and from the economic point of view that is very important because failures results in equipments maintenance that requires time and money causing prejudice to the company. Using SolidWorks, a simulation software, the thesis approaches all the mechanical parts required for it's construction as well as it's working principle. Acquisition sensors like strain gauges, accelerometer, and torque transductor were also used in this model. The objective of this thesis is to create a simulation model to be eventually at FEG(UNESP). During the development of the study, it was possible to learn more about the drilling process and the mechanical efforts in which the drill pipe is submitted. The accomplished contributed with knowledge for the student in the drilling process area. Also during the development of the study it was possible to have contact with different areas of engineering but the study is specifically directed to the construction of the test rig. Therefore the main theme of this thesis is to show the operating principle of the test rig and it's construction