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Mostrando 13-24 de 2664 artigos, teses e dissertações.
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13. 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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14. Exploring the association between attention-deficit/hyperactivity disorder and entrepreneurship
Objective: To investigate the association between attention-deficit/hyperactivity disorder (ADHD) symptoms and entrepreneurial profiles and the effects of entrepreneurial characteristics in individuals who screen positive for ADHD and self-identify as entrepreneurs. Methods: We sent 4,341 questionnaires by e-mail to applicants for a career development cour
Braz. J. Psychiatry. Publicado em: 2021-04
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15. Enabling design characteristics and budget usefulness
Abstract Purpose This study aims to investigate the influence of budgeting design characteristics on perceived budgeting usefulness, based on the enabling-coercive framework. Design/methodology/approach This paper develops a survey in one large publicly-listed Brazilian company that operates in the electric utility industry. The sample comprises 75 middle
RAUSP Manag. J.. Publicado em: 2021-03
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16. Knee extension strength and handgrip strength are important predictors of Timed Up and Go test performance among community-dwelling elderly women: a cross-sectional study
ABSTRACT BACKGROUND: Handgrip and knee extension strengths have each been used to characterize disability. However, it has been reported that the association between handgrip and knee extension strengths is weak. OBJECTIVE: To evaluate the influence of knee extensor and handgrip muscle strength on Timed Up and Go (TUG) test results among elderly women wi
Sao Paulo Med. J.. Publicado em: 2021-02
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17. CARACTERIZAÇÃO FÍSICA E QUÍMICA DA BIOMASSA USADA COMO COMBUSTÍVEL SÓLIDO EM UMA CALDEIRA
Biomass is a renewable energy source most used in the world, however, depending on the chemical properties and origin of the material used as biofuel, the amount of ash generated during combustion can be high, harming the energetic harnessing. The objective of this study was to characterize chemically and physically biomass: bark, sawdust, and urban pruning;
Quím. Nova. Publicado em: 2021-01
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18. Corrigendum
Abstract Reconciliation plays a key role in controlling and analysing mine operations. It consists in comparing model estimates with actual results produced by the plant, being used as an indicator, a monitoring tool. Discrepancies between these values are common in the mining industry and they highlight problems during processing steps. However, these discr
Braz. J. Psychiatry. Publicado em: 2020-12
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19. Microstructural and mechanical characterisation of the Simon Bolivar's iron bridge structure, 19th century, Arequipa, Peru
Abstract The microstructure of the main structural elements (Phoenix columns, transversal beams and tie-rods) of the Simón Bolivar iron bridge, located in Arequipa (Peru), was investigated. The bridge was supposedly designed by Gustave Eiffel and opened to the public in 1882. The characterisation revealed that the columns, beams and tie-rods are made of pud
REM, Int. Eng. J.. Publicado em: 2020-12
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20. Reconciliation of sampling data and heterogeneity analysis of a bauxite mine in Poços de Caldas/MG, in Brazil
Abstract Reconciliation plays a key role in controlling and analysing mine operations. It consists in comparing model estimates with actual results produced by the plant, being used as an indicator, a monitoring tool. Discrepancies between these values are common in the mining industry and they highlight problems during processing steps. However, these discr
REM, Int. Eng. J.. Publicado em: 2020-12
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21. Strategies used to control the costs of underground ventilation in some Brazilian mines
Abstract In an underground mine, the ventilation is responsible for 25% to 50% of its electrical energy consumption. In countries such as South Africa, United States and Canada researchers have started to achieve a significant reduction in energy consumption without neglecting aspects of the quantity and quality of air required for the best performance of th
REM, Int. Eng. J.. Publicado em: 2020-12
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22. Novel semirigid ureterorenoscope with irrigation and vacuum suction system: introduction and initial experience for management of upper urinary calculi
ABSTRACT Objective: This study aims to design a novel semirigid ureterorenoscope with irrigation and vacuum suction system and a modified ureteral access sheath (UAS) named Sotn ureterorenoscope® (Sotn=ShuoTong Medical Company) to overcome the deficiencies of the current procedure and to improve the efficiency and safety of using Sotn ureterorenoscope® fo
Int. braz j urol.. Publicado em: 2020-10
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23. Everyday sadism in the business area
Abstract Purpose The purpose of this study is to identify sociodemographic factors that are predictive of the level of everyday sadism (SAD) in the business area. Design/methodology/approach A survey was conducted on 424 graduate and postgraduate students from business schools in Brazil and the USA. SAD was quantified by the assessment of sadistic personal
RAUSP Manag. J.. Publicado em: 2020-09
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24. Financial constraints and the interdependence of corporate financial decisions
Abstract Purpose This paper aims to examine the interdependence of financial decisions (investment, financing, dividends and cash-holding) under financial constraints. Design/methodology/approach The authors specify and estimate a system of simultaneous equations with panel data and firm fixed effects by three-stage least squares in a sample of firms from
RAUSP Manag. J.. Publicado em: 2020-09