Mining
Mostrando 13-24 de 1303 artigos, teses e dissertações.
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13. Impact and future of telemedicine amidst the COVID-19 pandemic: a systematic review of the state-of-the-art in Latin America
Resumo Foram feitos progressos significativos na utilização de tecnologias de informação e comunicação na medicina, com impacto no sistema de prestação de cuidados de saúde e nos cuidados aos doentes, e abrindo caminho a ferramentas inovadoras para sistemas eletrônicos de saúde e de apoio à decisão clínica. O presente estudo investiga até que
Ciência & Saúde Coletiva. Publicado em: 2022
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14. CHARACTERISTICS OF PHYSIOLOGICAL CHANGES IN ATHLETE TRAINING BASED ON THE DATA MINING ALGORITHM
RESUMO Objetivo: Na competição do treinamento atlético, é imperativo usar vários indicadores fisiológicos e bioquímicos para estudar as alterações que eles podem suportar. Métodos: Neste trabalho, os indicadores fisiológicos e bioquímicos dos tenistas nacionais são tomados como amostras, e a Rede Neural Artificial (ANN) no algoritmo de minera�
Revista Brasileira de Medicina do Esporte. Publicado em: 2022
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15. DISCUSSION CONCERNING THE APPLICATION OF DATA MINING TECHNOLOGY IN SPORTS PERFORMANCE MANAGEMENT
RESUMO Introdução: Encontrar os fatores que contribuam para o sucesso no desempenho do aluno ou o seu fracasso é uma necessidade de todo professor. A mineração de dados, que já é utilizada em empresas para processos de gestão, pode ser uma importante aliada dessa pesquisa. Objetivo: Discutir a aplicação de algoritmos da mineração de dados na ge
Revista Brasileira de Medicina do Esporte. Publicado em: 2022
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16. Unplanned dilution back analysis in an underground mine using numerical models
Abstract In underground mines, stability problems can cause unplanned dilution, increasing the costs of mining operations, such as loading, transport, crushing and grinding. This is usually dealt with by simply increasing investments with support. However, the design geometry of stopes and drifts also has a great effect on a stope’s stability. The use of e
REM - International Engineering Journal. Publicado em: 2022
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17. Mapping of areas suitable for the application of biosolids in the Quadrilátero Ferrífero region, Minas Gerais, Brazil
Abstract The recovery of degraded areas is imperative for the sustainability of mining activities. The main action implemented to improve the chemical, physical and biological conditions of soils, tailings and sterile deposits is the incorporation of organic material. Biosolids (hygienized sewage sludge) are among the organic materials that can be applied. H
REM - International Engineering Journal. Publicado em: 2022
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18. Effects of the addition of graphene on the compressive strength of geopolymeric mortar developed from k-feldspar mining waste
Abstract Contemporary organizations are showing a growing interest in the reuse of solid waste from industrial processes with the intention of reducing environmental impacts and reducing costs. The mining activity is one of the main waste generators in Brazil. In parallel, geopolymeric materials have been gaining prominence in studies that make it a possible
REM, Int. Eng. J.. Publicado em: 2021-09
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19. Caminhos metodológicos para apreensão de rastros discursivos da mineração
Resumo O presente trabalho pretende apresentar parte do percurso teórico-metodológico adotado para se analisar a constelação discursiva em torno da mineração, segmento econômico marcado por contradições e conflitos, sobretudo após o rompimento de duas barragens de rejeitos de minério de ferro em Minas Gerais (Brasil), que causou a morte de quase t
Intercom, Rev. Bras. Ciênc. Comun.. Publicado em: 2021-08
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20. Technical dossier and legal proceedings in Brazilian dimension stone mining
Abstract This article presents a guide to be followed by mining companies willing to open a dimension stone quarry in Brazilian territory. It highlights the main technical documents required by Federal legislation to obtain mining authorization. These documents and their singularities were compiled based on a study of Brazilian mining laws, other normative i
REM, Int. Eng. J.. Publicado em: 2021-06
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21. Multi-stage dumping sequence - a feasible waste management alternative for open pit mining
Abstract Waste management and environmental aspects are progressively gathering attention in the mining industry. Mine planners must deal with increasingly complex tasks to balance between ore block schedules, waste disposal, operational cost and environmental reclamation. The mine incomes are generally related to mining and processing of the ore, thus most
REM, Int. Eng. J.. Publicado em: 2021-06
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22. Geostatistical simulations with heterotopic hard and soft data without modeling the linear model of coregionalization
Abstract Most mining decisions are based on models estimated/simulated given the information obtained from samples. During the exploration stage, samples are commonly taken using diamond drill holes which are accurate and precise. These samples are considered hard data. In the production stage, new samples are added. These last are cheaper and more abundant
REM, Int. Eng. J.. Publicado em: 2021-06
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23. Indicator kriging applied to RMR geomechanical modelling in a Pb-Zn deposit case study
Abstract The opening of a mining enterprise requires knowledge of the geomechanical characteristics of the mineral deposit, which will be worked according to the use of parameters of stability and/or resistance of the material, as well as the discontinuities present in the rock. In this study, the Rock Mass Rating methodology was used to propose a geomechani
REM, Int. Eng. J.. Publicado em: 2021-06
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24. SALITRE: O PRODUTO QUÍMICO ESTRATÉGICO NO PASSADO DO BRASIL
Saltpeter demanded for a long-time strategic attention in view of its importance in the form of gunpowder by the governments of many nations. The sources of this mineral in Brazil were almost always associated to the soil in caves, which was extracted because of a limited amount of that precious salt. The first references pointed out that saltpeter was first
Quím. Nova. Publicado em: 2021-04