Dams
Mostrando 1-12 de 448 artigos, teses e dissertações.
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1. Development of innovation routes for iron ore using high intensity magnetic separators
Abstract The mineral processing of low-grade iron ores commonly generates large volumes of slime, which are disposed as tailings. Modern mining requires strives to eliminate the use of tailings dams in a maximum effort to increase metallurgical recovery, the security and reduction of the operational cost. This research aims for the recovery of iron contained
REM - International Engineering Journal. Publicado em: 2022
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2. The Induction of Hypothyroidism during Gestation Decreases Outer Hair Cell Motility in Rat Offspring
Abstract Introduction Perinatal hypothyroidism has a negative repercussion on the development and maturation of auditory system function. However, its long-term effect on auditory function remains unsettled. Objective To evaluate the effect of prenatal hypothyroidism on the auditory function of adult offspring in rats. Methods Pregnant Wistar rats were gi
International Archives of Otorhinolaryngology. Publicado em: 2022
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3. Impressions of the chronic 900-MHz electromagnetic field in the prenatal period on Purkinje cells in male rat pup cerebella: is it worth mentioning?
SUMMARY OBJECTIVE: The aim of this study was to examine the changes on the Purkinje cells in the cerebella of male rat pups born to pregnant dams that were exposed to an electromagnetic field in the prenatal period. METHODS: The first stage of the study involved 12 Sprague-Dawley rats, 6 male and 6 female, weighing between 180 and 250 g. The female rats in
Revista da Associação Médica Brasileira. Publicado em: 2022
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4. Maternal Intake of Flaxseed During Lactation and Exercise Training Protect Against Salt Overload-Induced Aortic Remodeling in Adult Offspring
Abstract Background High dietary sodium intake can induce endothelial stiffness even without changes in blood pressure. Objectives To evaluate the effects of exercise training and chronic intake of sodium chloride solution on aortic morphology of male offspring of rat dams who consumed flaxseed during lactation. Methods Female rats were fed with a control
Int. J. Cardiovasc. Sci.. Publicado em: 2021-04
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5. Acute Myocardial Infarction as the Initial Clinical Manifestation of Pernicious Anemia
Abstract Background High dietary sodium intake can induce endothelial stiffness even without changes in blood pressure. Objectives To evaluate the effects of exercise training and chronic intake of sodium chloride solution on aortic morphology of male offspring of rat dams who consumed flaxseed during lactation. Methods Female rats were fed with a control
Int. J. Cardiovasc. Sci.. Publicado em: 2021-04
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6. Obtaining geotechnical parameters from correlations between geophysics and CPT tests in tailings dams
Abstract This article introduces a hassle-free methodology for geotechnical parameters to be obtained from correlations between geophysics and CPT field tests in tailings dams undergoing the decommissioning process, which are reasonably representative of site conditions, from the very early project stages, with extensive coverage of all impoundment parts, wi
REM, Int. Eng. J.. Publicado em: 2020-12
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7. Detection of seepage paths in small earth dams using the self-potential method (SP)
Abstract The application of geoelectric methods, such as induced polarization (IP), the electrical resistivity and the self-potential (SP), presents an important indirect study methodology in several areas of geology, such as mining, geotechnics and environmental geology. The present study deals with the results of the application of the self-potential metho
REM, Int. Eng. J.. Publicado em: 2020-09
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8. Stabilization of sandy soil with high content of asphalt emulsion
Abstract The purpose of this article is to evaluate the shear strength parameters of mixtures of sandy soil with high asphalt emulsion contents for their use in geotechnical structures, such as zoned earth dams, embankments, etc. The methodology adopted consisted of: collecting and characterizing samples of sandy soil to be laboratory tested; compacting the
REM, Int. Eng. J.. Publicado em: 2020-06
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9. Percepção e paisagem no cotidiano de escolas inseridas em paisagens rurais e urbanas
Resumo: O estudo identificou a percepção sobre meio ambiente de alunos de quatro escolas localizadas em paisagens culturais, rurais e urbanas. Na percepção dos alunos, identificada por meio de mapas mentais, há predomínio significativo de elementos naturais, bióticos e abióticos, indicando que possuem uma percepção naturalista sobre meio ambiente.
Ciênc. educ. (Bauru). Publicado em: 20/12/2019
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10. Checklist of the fishes from Jamari River basin, in areas under influence of dams, Rondônia, Brazil
Resumo: O rio Madeira é o mais extenso afluente do rio Amazonas e possui a maior biodiversidade de peixes do mundo. Em sua margem direita, o rio Madeira recebe o rio Jamari, no qual foi construída a primeira usina hidrelétrica (UHE) do estado de Rondônia, a UHE Samuel. Além desta, outros barramentos foram construídos no rio Jamari e em seus afluentes,
Biota Neotrop.. Publicado em: 13/12/2019
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11. DAMS SAFETY INDEX (DSI): A REASSESSMENT OF THE PARAMETERS OF ANALYSIS
ABSTRACT Dams provide a water supply, irrigation and power generation. However, the economic, social and environmental impacts are serious when they rupture. It is important that dams continue to function properly and are constantly evaluated for their safety and functionality. Contrary to general belief, small dams are the ones that present the most problem
Eng. Agríc.. Publicado em: 09/12/2019
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12. Land-use influence on the soil hydrology: An approach in upper Grande River basin, Southeast Brazil
RESUMO A Bacia do Alto Grande (ARG) é responsável pela drenagem de vários rios no sudeste do Brasil, sendo uma região hidrológica de grande importância para o Sistema Elétrico Brasileiro. Portanto, estudos sobre a disponibilidade de água nesta região são indispensáveis para uma melhor tomada de decisão na gestão dos recursos hídricos. O objetiv
Ciênc. agrotec.. Publicado em: 09/12/2019