Mineral Analysis
Mostrando 1-12 de 772 artigos, teses e dissertações.
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1. Qual medicação utilizar nos casos de pulpotomia em dentes decíduos?
Para casos de pulpotomias de dentes decíduos o Agregado Trióxido Mineral (MTA) apresenta resultados clínicos e radiográficos significativamente mais satisfatórios, em relação aos demais materiais. A preservação da vitalidade pulpar e indução da formação de dentina reparadora podem ser alcançadas com o uso do hidróxido de cálcio ou do MTA
Núcleo de Telessaúde Espírito Santo. Publicado em: 12/06/2023
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2. Quais as indicações clínicas para a utilização do cimento de hidróxido de cálcio na prática clínica odontológica?
O cimento é empregado na proteção indireta do complexo dentino-pulpar, como curativos temporários e fixação de próteses provisórias. A forma de solução é útil para todos os tipos de limpeza de cavidades para desinfetá-las antes da proteção pulpar e da restauração, já a suspensão, além de ser utilizada para limpeza de preparos cavitári
Núcleo de Telessaúde Maranhão HU-UFMA. Publicado em: 12/06/2023
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3. Quais são as indicações de dosagem e reposição de vitamina D em pacientes assintomáticos?
Não está recomendada avaliação rotineira (rastreamento) de deficiência de vitamina D para pacientes adultos assintomáticos (gestantes ou não gestantes). No entanto, algumas populações de risco têm maior chance de apresentar deficiência e a dosagem pode ser recomendada:
– uso de medicamentos que influenciam no metabolismo mineral e funci
Núcleo de Telessaúde Rio Grande do Sul. Publicado em: 12/06/2023
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4. Bioactive compounds, bromatological and mineral characterization of blackberries in a subtropical region
ABSTRACT Given the above, the objective of this study was to evaluate the bromatological, mineral and bioactive compounds of blackberry grown in a subtropical region. Blackberries fruits (Rubus sp.), Grown in an orchard of Unioeste, Campus Marechal Cândido Rondon (Paraná, Brazil), were used. Immediately after harvest, the fruits were taken to the Food Tech
Revista Ceres. Publicado em: 2022
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5. Characterization of micaceous minerals occurring in phosphate ores in Brazil: emphasis on the interstratified phyllosilicates
Abstract Micaceous minerals were characterized in three phosphatic ores from mines in Western Minas Gerais State, Brazil, all having complex chemical and mineralogical compositions, with emphasis on interstratified phyllosilicates. Knowledge of the relationship between the physical and chemical characteristics of the phyllosilicates contributed to a better u
REM - International Engineering Journal. Publicado em: 2022
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6. 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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7. An alternative route to extract nickel and cobalt from non-commercial laterite ore
Abstract Laterite ores, which represent around two-thirds of nickel reserves, became an important source of nickel and cobalt metals. The objective of the present study was to investigate the efficiency of a hybrid route to extract nickel and cobalt present in a laterite ore sample which was not commercially attractive to be processed through the current rou
REM - International Engineering Journal. Publicado em: 2022
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8. Fundamental bioflotation aspects of hematite using an extracted Rhodococcus opacus by-product
Abstract The aim of this study is to assess the floatability of hematite using a crude biosurfactant (BS) extracted from Rhodococcus opacus. Throughout high-pressure ethanol extraction, unrefined surfactant was extracted from the bacteria with a yield of 0.3 g/L. An FTIR analysis on this extract, shows the presence of alcohol (–OH) and ketone (C=O) groups,
REM, Int. Eng. J.. Publicado em: 2021-09
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9. Development of Analytical Method for Determination of Inorganic Constituents in Powder Refreshment Using Dilute Mineral Acids and Detection by ICP OES
An analytical method for multi-elementary determination in powder refreshment, based on sample digestion using dilute mineral acids and detection by inductively plasma coupled optical emission spectrometry (ICP OES) is proposed. Chemometric tools, such as fractional factorial design and principal component analysis (PCA) and hierarchical cluster analysis (HC
J. Braz. Chem. Soc.. Publicado em: 2021-07
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10. Solventes eutéticos naturais profundos (NADES) no preparo de amostras de rocha fosfática e suplemento mineral para determinação elementar por técnicas de plasma
Natural deep eutectic solvents (NADES) based on xylitol, citric acid, and malic acid were synthesized and used in ultrasound-assisted extraction (UAE) and heating-bath extraction of phosphate rock and mineral supplement samples. Arsenic, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, P and Zn were determined by inductively coupled plasma mass spectrometry (ICP-MS) and i
Quím. Nova. Publicado em: 2021-06
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11. Geophysical and structural survey in copper occurrence located in the northern region of the Camaquã basin (RS)
Abstract The geophysical diagnosis of mineral deposits can be extremely useful in detailing mineralized zones and is a strategy for direct sampling by probing holes for content analysis. This study involves the combined use of Electrical geophysical methods (DC resistivity and Induced Polarization), geological recognition and structural field analysis, with
REM, Int. Eng. J.. Publicado em: 2021-06
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12. Purification of raw palygorskite: a comparative study involving different processes and dispersing agents
Abstract Palygorskite (Pal) is a natural clay mineral with fibrous morphology and high surface area. Depending on the geological origin, it presents impurities, such as quartz and carbonates, which can harm some of its properties. Therefore, this work seeks to define a viable methodology for the purification of a Brazilian Pal. Two types of mixing processes
Cerâmica. Publicado em: 2021-06