Manganese Chloride
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. Increased whitening efficacy and reduced cytotoxicity are achieved by the chemical activation of a highly concentrated hydrogen peroxide bleaching gel
Abstract Objective This study was designed for the chemical activation of a 35% hydrogen peroxide (H2O2) bleaching gel to increase its whitening effectiveness and reduce its toxicity. Methodology First, the bleaching gel - associated or not with ferrous sulfate (FS), manganese chloride (MC), peroxidase (PR), or catalase (CT) - was applied (3x 15 min) to
J. Appl. Oral Sci.. Publicado em: 12/08/2019
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2. Effect of sulfate on the pitting potential of austenitic stainless steels 18Cr8Ni and 17Cr6Mn5Ni in chloride media
Abstract Pitting corrosion resistance of two austenitic stainless steels, 18Cr8Ni (Type 304L or UNS S30403 stainless steel) and 17Cr6Mn5Ni, was evaluated in three electrolytic solutions containing a fixed concentration of 0.6M sodium chloride and different additions of sodium sulfate, 0.06M, 0.15M or 0.6M. Cyclic potentiodynamic polarization tests were perfo
REM, Int. Eng. J.. Publicado em: 2019-03
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3. Potassium-modulated physiological performance of mango plants infected by Ceratocystis fimbriata
ABSTRACT Mango wilt, caused by the fungus Ceratocystis fimbriata, is an important disease affecting mango production. In view of the beneficial effects of potassium (K) in other profitable crops and the lack of information about the effect of macronutrients on mango wilt development, the present study aimed to evaluate how mango plants supplied with K respon
Bragantia. Publicado em: 14/08/2017
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4. EVALUATING ARSENIC AND MANGANESE REMOVAL FROM WATER BY CHLORINE OXIDATION FOLLOWED BY CLARIFICATION
AbstractThis paper investigates the simultaneous removal of arsenic [As(V) or As(III)] and manganese [Mn(II)] from natural waters of low and high turbidity by clarification (with polyaluminum chloride and aluminum sulfate as primary coagulants) associated or not with chlorine pre-oxidation. The results showed that the clarification process exhibited low Mn(I
Braz. J. Chem. Eng.. Publicado em: 2015-06
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5. Reagentes organometálicos: preparação e reatividade de compostos orgânicos de telúrio / Organometallic reagents: preparation and reactivity of organic compounds of tellurium
Nesta tese foram desenvolvidas metodologias sintéticas para a preparação de compostos orgânicos de telúrio empregando reagentes organometálicos. Primeiramente, foi estudada a abertura tipo SN2 de lactonas, por organoiltelurolatos de lítio ou magnésio para obtenção dos respectivos ácidos telurocarboxílicos. Os organoiltelurolatos foram preparados
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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6. Caracterização da resistência à corrosão de ligas inoxidáveis Fe-Mn-Si-Cr-Ni-(Co) com efeito de memória de forma / Characterization of the corrosion resistance of Fe-Mn-Si-Cr-Ni-(Co) Shape memory stainless steels
In this work, the corrosion behavior of three Fe-Mn-Si-Cr-Ni(Co) shape memory stainless steels (SMSS) in aggressive environments was characterized. The electrochemical corrosion behavior in 0.5 M H2SO4 solution was obtained by potentiodynamic polarization, linear polarization, potential decay curves, electrochemical impedance spectroscopy (EIS), and Mott-Sch
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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7. Remoção de sulfeto de hidrogênio, ferro e manganês de águas de abastecimento através dos processos de dessorção gasosa, nanofiltração e oxidação com permanganato de potássio
Many regions in Brazil have problems associated with the water quality of their supplies, which bring problems to the production of safe drinking water that is distributed in communities. Generally, consumers judge the drinking water safety through the use of their organoleptic senses. The conventional processes used in water treatment are not effective to r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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8. Tratamento de água para abastecimento público por sistema de separação por membrana de ultrafiltração: estudo de caso na ETA Alto da Boa Vista (São Paulo, SP). / Drinking water treatment by ultrafiltration: case study at Alto da Boa Vista WTP(São Paulo- SP).
Membrane processes, specially microfiltration and ultrafiltration, are emerging technologies for drinking water treatment due the possibility for producing high quality water through compact treatment plants that are easier to automate with reduced sludge production and cost competitive compared with conventional processes. In this research it had been evalu
Publicado em: 2010
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9. âFormulaÃÃes de extratos vegetais e micronutrientes na induÃÃo de resistÃncia em mudas de cafeeiro contra Cercospora coffeicolaâ, / Formulations of vegetal extracts and micronutrients for the induction of resistance of coffee seedlings against Cercospora coffeicola.
The current work was aimed at evaluating the effect of different formulations based on plant extracts, in mixture or in combination with the compounds ASM (acibenzolar-S-methyl), copper sulfate, manganese sulfate or manganese chloride, in the severity of brown eye spot and on the number of leaves of coffee seedlings. Biochemical mechanisms involved in the de
Publicado em: 2008
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10. Características da planta e produção de batata-semente básica em substrato com diferentes materiais de propagação / Potato plant characteristics and basic seed production in substrate with different propagation materials
This study was carried out to optimize the pot with substrate system on basic seed potato production using different propagation materials. At diferent experiments were evaluated: a) five substrate volumes in the pot (1.5; 3.0; 6.0; 12.0, and 24.0 dm3) and tuber sprout as the propagation material; b) two propagation materials, minituber and tuber sprout, and
Publicado em: 2008
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11. Metalloporhyrins as Biomimetical MOdels of Cytochrome P450 in the Oxidation of Pesticides / Metaloporfirinas como modelos biomiméticos do citocromo P450 na oxidação de pesticidas"
In this work we investigated the ability of metalloporphyrin model systems to mimic the action of cytochrome P450 in the oxidation of a herbicide, atrazine. To this end, we employed the second generation commercially available metalloporphyrins metal (III) 5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrin chloride [M(TDCPP)Cl] and metal (III) 5,10,15,20- tetr
Publicado em: 2006
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12. Estudo comparativo das caracterÃsticas dos lÃquidos percolados gerados no Aterro Metropolitano â PB e no Aterro da Muribeca â PE
The way of final disposition used for homely urban solid waste in Brazil and throughout the world has been sanitary embankment, which can be applied for both small and big communities. It is important to mention in this method, the treatment of the liquids that are not generated inside the heap of refuse, named leachate, which produces the percolate when mix
Publicado em: 2006