Mining Economy
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Flexible pavement with mining waste proposal - execution and analysis of an experimental section
Abstract The extraction of iron ore has a fundamental role in the Brazilian economy. However, such activity generates considerable volumes of waste whose disposal, even if regulated and licensed, has a significant environmental impact. The worldwide concern for sustainable practices along with the urgency for measures to mitigate environmental damage, justif
REM - International Engineering Journal. Publicado em: 2022
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2. Magnetic concentration route for recovering pellet feed fines stored in a mining dam
Abstract The greatest and noblest challenge of mining engineering for the present and the future of iron ore treatment could be considered as the pursuit of optimizing the use of mineral resources. The use of mining tailings, in the mineral sector itself, or in another industrial branch, meets the needs of circular economy as it increases the useful service
REM - International Engineering Journal. Publicado em: 2022
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3. Development of a low-cost alternative for the monitoring of the ore hauling production indicators in small-scale mining
Abstract Small and medium-sized mining represent an important part of a country's min eral economy. These companies, although substantial and numerous, have low invest ment potential in their development through new technologies. One of the problems small and medium mining companies face is the ore hauling production monitoring. This operation alone can cons
REM, Int. Eng. J.. Publicado em: 2020-09
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4. The spirit underneath: development, race and moral economy in Central Mozambique
Resumo Desde 2007, Tete, província central de Moçambique, passa por uma grande expansão econômica. Empresas multinacionais de mineração estão explorando um dos maiores - e praticamente intocados - depósitos de carvão do mundo. Liderados pela brasileira Vale, o bilionário e polêmico plano de investimento chamou a atenção de ONGs internacionais e
Vibrant, Virtual Braz. Anthr.. Publicado em: 28/11/2019
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5. Optimum mine production rate based on price uncertainty
Abstract The production rate of a mining operation has an important effect on the operational cycle and gross profit, which are often evaluated based on engineering practices. Assessment of the economic performance of mine operations in mining engineering is of great importance because an incorrect production rate can result in significant financial losses.
REM, Int. Eng. J.. Publicado em: 16/09/2019
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6. Structural and mineralochemical characterization of a pegmatite deposit in the Santa Rosa Pegmatite Field, Minas Gerais Brazil
Abstract The Santa Rosa Pegmatite Field (SRPF), in northeastern Minas Gerais State, is one of the most important gemstone sources in Brazil. The economy of several neighboring cities greatly relies on the trade of its gemstones. However, efforts to improve gemstone mining with practical, scientific methods are scarce, making it a yet inexpensive, marginally
REM, Int. Eng. J.. Publicado em: 19/06/2019
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7. Elaboração de indicadores bibliométricos a partir de patentes de nanotecnologia
The need to assign values to consumer and globalization have created a new format in the economy. These phenomena have increased investments in technology until the crisis of 1970 that generated a reduction in economic growth and consequently reduction in research funding. This context created resources that could gauge the areas that lacked development. One
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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8. Capital humano, oportunidades de trabalho e incentivos públicos: motivações e decisões da família quanto ao investimento em ensino superior / Human capital, job opportunities and public incentives: family motivations and decisions regarding investment in higher education
The research presented in this dissertation consisted of a study with theoretical basis in the human capital theory, whereby the higher the educational level of an individual, the higher will be his or her salary. However, in Brazil, where a significant part of the population is classified as poor, there are less public assets for investment in human capital
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/04/2011
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9. A CRISE FINANCEIRA DE 2008 E SEUS IMPACTOS NOS SETORES DA ECONOMIA BRASILEIRA: UMA ABORDAGEM POR REGRESSÃES QUANTÃLICAS E TEORIA DE PORTFÃLIO / THE FINANCIAL CRISIS OF 2008 AND ITS IMPACT ON THE SECTORS OF THE BRAZILIAN ECONOMY: AN APPROACH quantile regressions AND PORTFOLIO THEORY
This study applies traditional techniques in Finance and Econometrics in order to analyze the impacts of Financial Crisis on some sectors of the Brazilian economy based upon market indicators provided by Getulio Vargas Foundation (FGV). Initially we apply the theory proposed by Markowitz to sectoral indicators for eight economic sectors and estimate efficien
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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10. Computational framework to analyze agrometeorological, climate and remote sensing data: challenges and perspectives.
In the past few years, improvements in the data acquisition technology have decreased the time interval of data gathering. Consequently, institutions have stored huge amounts of data such as climate time series and remote sensing images. Computational models to filter, transform, merge and analyze data from many different areas are complex and challenging. T
CONGRESSO DA SOCIEDADE BRASILEIRA DE COMPUTAÇÃO. Publicado em: 2011
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11. Integrating time series mining and fractals to discover patterns and extreme events in climate and remote sensing databases.
This thesis presents new methods based on fractal theory and data mining techniques to support agricultural monitoring in regional scale, specifically regions with sugar cane fields. This commodity greatly contributes to the Brazilian economy since it is a viable alternative to replace fossil fuels. Since climate influences the national agricultural producti
2010.. Publicado em: 2011
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12. A mineraÃÃo de agregados na regiÃo metropolitana de Fortaleza: impactos ambientais e conflitos de uso e ocupaÃÃo do solo / The mining of aggregates in the metropolitan region of Fortaleza: environmental impacts and use conflicts and land use
The Metropolitan Area of Fortaleza has great potential natural and economic for the development of mining of aggregates. Diversity of lithology ensures good supply of material for immediate use in civil construction and economic growth associated pent-up demand by building housing and also the deficiencies, of urban structure form the scenery favorable to ex
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2010