Mineral Resources
Mostrando 13-24 de 103 artigos, teses e dissertações.
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13. Sustentabilidade do licenciamento ambiental minerário em Minas Gerais: caso aplicado
RESUMO A avaliação de impactos ambientais, introduzida por meio da Política Nacional de Meio Ambiente (PNMA), ganhou espaço primordialmente dentro do licenciamento ambiental, cujo modelo atual é questionado pela sua ineficácia em compensar ao ambiente a perda dos recursos naturais. Este estudo teve como objetivo analisar de forma técnica e legal o lic
Eng. Sanit. Ambient.. Publicado em: 06/06/2019
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14. Determination of maximum zinc recovery of Vazante mine ore by flotation process
Abstract Nowadays, Nexa Resources (ex-Votorantim Metais) operates two zinc mines in Brazil, represented by the Vazante unit in Vazante - MG and the Morro Agudo unit in Paracatu - MG. The present study was carried out at the Vazante unit, where zinc concentrate is produced from a silicate ore called Willemite (Zn2SiO4) through froth flotation processes. The t
REM, Int. Eng. J.. Publicado em: 2019-06
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15. Narrative and database in “All that is Solid”, a desktop documentary
Resumo Este artigo propõe analisar “All that is Solid”, do artista e cineasta Louis Henderson, um filme-documentário que utiliza a área de trabalho de um computador como o pano de fundo para um novo tipo de estrutura narrativa a desdobrar-se. O filme é analisado, principalmente, através da noção de Lev Manovich de “banco de dados como uma forma
Galáxia (São Paulo). Publicado em: 23/05/2019
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16. DNPM actions on the implementation of law 12.334/2010: from the ordinances and inspections to the SIGBM
Abstract As defined in PNSB - Law 12.334/2010 (Brasil, 2010), the DNPM, which manages the Brazilian mineral resources, is also responsible for overseeing the safety management of tailings dams in the country. The purpose of this article is to present the actions carried out in this context by the Department since the enactment of the Law in 2010, such as: el
REM, Int. Eng. J.. Publicado em: 2019-03
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17. Avaliação das propriedades físicas, químicas e mineralógicas da fração fina (<150 µm) do agregado reciclado de RCD
Resumo Fatores como o alto consumo de recursos naturais e os elevados volumes de resíduos produzidos pela indústria da construção civil alertam sobre a importância de reutilizar e reciclar os materiais. Assim, este trabalho objetivou determinar e avaliar as características físicas, químicas e mineralógicas dos finos do agregado reciclado (FAR), comp
Cerâmica. Publicado em: 2019-01
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18. Occurrence of Yeast Species in Soils under Native and Modified Vegetation in an Iron Mining Area
ABSTRACT Soils of the Quadrilátero Ferrífero are rich in mineral resources, especially gold and iron. Soil management and mining activities greatly impact soil biology. However, studies addressed to the diversity of microorganisms and their ecological role in the recovery of these areas are scarce. This study aimed to assess the yeast occurrence in soils w
Rev. Bras. Ciênc. Solo. Publicado em: 26/07/2018
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19. Geophysical prospection in tin mineral occurrence associated to greisen in granite São Sepé (RS)
Abstract The discovery of new mineral resources involves various research techniques through direct and indirect studies. The geophysical methods are important tools in the detection of deep deposits because they use the contrast between the physical properties of the hosting rocks and the mineralized zone. In this sense, electrical geophysical methods are w
REM, Int. Eng. J.. Publicado em: 2018-04
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20. Principal environmental impacts on pipeline tracks as a result of mining operations and their mitigated actions
Abstract This study deals with the main environmental impacts and possible mitigation measures for many pipeline tracks, due to the mining of different substances in areas of interference between mining activities and mineral research and those resulting from construction and gas pipeline operation. By monitoring the identified interferences/disturbances, it
Rem: Rev. Esc. Minas. Publicado em: 2016-06
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21. An Analysis of the Rate for Controlling, Monitoring and Supervision of Exploration and Mining Activities of Mineral Resources (TFRM)
Abstract Recently, the Brazilian media reported the withdrawal of the rate on profit from mining of coal and iron ore by the government of Australia. In Australia this rate was created in 2012 to finance social programs. However, due to the drop in the value of mineral commodities, the government has reversed this trend and seeks to quash the law that create
Rem: Rev. Esc. Minas. Publicado em: 2016-03
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22. Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of "Podbracan"
Mining projects for mineral resource mining contain in certain cases specific technical and technological solutions, these being the result of the mine’s characteristic spatial position and the geometry of the ore deposit, existing mining works, structures, and terrain relief etc. For the purpose of completion of the mining project, it is necessary to carr
Rem: Rev. Esc. Minas. Publicado em: 2015-09
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23. Biosurfactant production by
Pseudomonas aeruginosa in kefir and fish mealThe aim of this study was to increase rhamnolipid production by formulating media using kefir and fish meal for
Pseudomonas aeruginosa strains isolated from different environmental resources. The strains, named as H1, SY1, and ST1, capable of rhamnolipid production were isolated from soil contaminated with wastes originating from olive anBraz. J. Microbiol.. Publicado em: 2015-09
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24. Re-Ingeniería de apatita natural para soporte de tejidos óseos
Recent progresses in orthopedic medicine, traumatology and odontology have created a great requirement for biomaterials, especially those products having a composition based on calcium orthophosphate, which is similar to inorganic bone structure. Given this situation, there has been an intense search for new origins and resources of biomaterials. The natural
Matéria (Rio J.). Publicado em: 2014-09