Mineral Mixture
Mostrando 1-12 de 152 artigos, teses e dissertações.
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1. Evaluation of the Structural Integrity of Layered Double Hydroxides and Mesoporous Silica During the Preparation of Heterostructures
Heterostructures constructed with mesoporous silica and layered double hydroxides are interesting for catalytic and drug delivery applications. Different arrangements between these phases are possible. In this study, we prepared heterostructures by embedding layered double hydroxides phases [M4Al2(OH)12](CO3) (M = Mg2+ or Zn2+) within the MCM41 mesoporous si
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. 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
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3. QUANTIFICAÇÃO DE MULLITA PROVENIENTE DE RESÍDUOS DE CAULIM DA REGIÃO AMAZÔNICA: USO DO MÉTODO DE RIETVELD
Mullite is used to obtain a refractory material, there are several factors that influence the synthesis process of mullite: the preparation of the mixture, the precipitation and the reaction of SiO2 and Al2O3. For the synthesis of mullite, samples of kaolin processing residues were used as precursor material, because it presents SiO2 and Al2O3 in its composi
Quím. Nova. Publicado em: 2021-04
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4. Voltammetric Determination of Free and Total Manganese in Tea Infusions
Tea infusions are a source of mineral nutrients, including manganese. Although it is classified as an essential element, the excess of manganese is toxic for humans and its toxicity depends on its bioavailability. In this context, we propose a simple procedure to determine free and total manganese in black tea infusions by square-wave voltammetry (SWV). Free
J. Braz. Chem. Soc.. Publicado em: 2020-07
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5. Gluten-free pasta: development of a new formulation based on rice and lupine bean flour (Lupinus Mutabilis) using a mixture-process design
Abstract Gluten-free pasta was developed by substituting rice flour (RF) with lupin flour (LF). The factors tested were the substitution of RF by LF (10g/100g -30g/100g), egg (8g/100g -30g/100g) and guar gum (0.15g/100g -1g/100g) using a mixture-process design. Seven response variables were measured. Luminosity, ash content, protein content, chrome, hue, wei
Food Sci. Technol. Publicado em: 2020-06
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6. Application of Mixture Design Using Diluted Acid for Extraction of Inorganic Components in Fruits of Casearia fasciculata and Determination by ICP OES: Evaluation by PCA and HCA
This study is the first to propose the simultaneous quantification of 10 elements in fruits of Casearia fasciculata by inductively coupled plasma optical emission spectrometry (ICP OES). A method of digestion using dilute nitric acid was optimized by mixture design for extraction of elements in the seed, peel, and pulp of Casearia fasciculata cultivated in t
J. Braz. Chem. Soc.. Publicado em: 2020-06
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7. Gluten-free pasta: development of a new formulation based on rice and lupine bean flour (Lupinus Mutabilis) using a mixture-process design
Abstract Gluten-free pasta was developed by substituting rice flour (RF) with lupin flour (LF). The factors tested were the substitution of RF by LF (10g/100g -30g/100g), egg (8g/100g -30g/100g) and guar gum (0.15g/100g -1g/100g) using a mixture-process design. Seven response variables were measured. Luminosity, ash content, protein content, chrome, hue, wei
Food Sci. Technol. Publicado em: 20/12/2019
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8. Mineralogical Characterization of Iron Ore Tailings from the Quadrilatero Ferrifero, Brazil, by Eletronic Quantitative Mineralogy
The mineralogical characterization studies search for the best processing route, with the lowest environmental impact, aiming to improve the use of mineral resources. The electronic quantitative mineralogy (EQM) provides quickly and accurately great information about the characteristics of these materials. This work aims to characterize iron ore tailings by
Mat. Res.. Publicado em: 02/12/2019
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9. Does the sequence of addition of herbicide and adjuvants to the spray solution influence sicklepod control?
RESUMO O uso de adjuvantes associados a herbicidas visa melhorar o desempenho da aplicação e o consequente aumento do efeito biológico do tratamento. Porém, a ordem de adição dos produtos ao tanque do pulverizador pode trazer importantes influências à calda fitossanitária. Assim, o objetivo desta pesquisa foi avaliar o controle de Senna obtusifolia
Arq. Inst. Biol.. Publicado em: 28/11/2019
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10. Ensaios de infiltração em modelos experimentais de coberturas secas utilizando cinzas de carvão mineral da Termelétrica do Pecém
RESUMO O elevado volume de cinzas de carvão mineral acumulado nas bacias de armazenamento da Usina Termoelétrica Energia Pecém resultou em uma demanda por pesquisas que propusessem diferentes formas de utilização desse resíduo, de modo a dar um destino final para este material. O uso das cinzas na forma de coberturas secas de depósitos de resíduos se
Matéria (Rio J.). Publicado em: 25/11/2019
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11. Substituition of urea for soybean meal and forced intake of minerals on the performance of growing crossbred calves
RESUMO Quarenta e oito bezerros cruzados, com peso vivo de 203,6±3,7kg e idade de 11,8±1,0 meses, sendo 24 machos e 24 fêmeas, foram distribuídos nos tratamentos: MT - sal mineral à vontade e cana-de-açúcar adicionada de 10g kg -1 de uma mistura de ureia e sulfato de amônio na proporção de 9:1; MA - cana-de-açúcar adicionada de 16g kg -1 de uma
Arq. Bras. Med. Vet. Zootec.. Publicado em: 28/10/2019
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12. Physicochemical characterization and lipid profile of meat from crossbred
RESUMO: Objetivou-se avaliar as características da carcaça, parâmetros físico-químicos, composição centesimal e perfil de ácidos graxos do músculo Longissimus lomborum de novilhos mestiços em pastagem de Brachiaria (Syn. Uruchloa) brizantha cv. Marandu, durante as fases de recria e terminação. Foram utilizados 22 novilhos (½ Holandês e ½ Zebu
Cienc. Rural. Publicado em: 28/10/2019