Sulfate Pulp
Mostrando 1-12 de 18 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. Initial inflammatory response after the pulpotomy of rat molars with MTA or ferric sulfate
Abstract Purpose To compare, both qualitatively and quantitatively, the inflammatory cells, vascular density and IL-6 immunolabeled cells present in the pulp after pulpotomy with white MTA versus 15.5% ferric sulfate (FS). Methodology Forty-eight mandibular first molars from 24 Wistar rats were divided into MTA or FS groups and subdivided according to th
J. Appl. Oral Sci.. Publicado em: 29/07/2019
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3. Decolorization of remazol brilliant blue R with laccase from Lentinus crinitus grown in agro-industrial by-products
ABSTRACT Lentinus crinitus is a white-rot fungus that produces laccase, an enzyme used for dye decolorization. Enzyme production depends on cultivation conditions, mainly agro-industrial by-products. We aimed to produce laccase from Lentinus crinitus with agro-industrial by-products for dye decolorization. Culture medium had coffee husk (CH) or citric pulp p
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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4. Non process elements balance in a pulp mill / Balanço de elementos não processáveis em uma fábrica de celulose
Elementos não processáveis são definidos como sendo elementos cujos compostos não participam ativamente das diversas etapas do processo, porém seu acúmulo traz como conseqüência inúmeros distúrbios operacionais, tendo em vista a formação de compostos indesejáveis. O aumento das pressões ambientais sobre a indústria de um modo geral, fez com qu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/07/2010
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5. Analysis of inorganic composition and release of formaldehyde after manipulation of endodontic sealers / Analise da composição inorganica e da liberação de formaldeido apos a manipulação de cimentos endonticos
This study evaluated chemical composition (inorganic) and formaldehyde presence in root-canal sealers. Seven root-canal sealers were chosen: four based-zinc-oxide-eugenol (ZOE) (Targer Canal Sealer, Konne; Endo Fill, Dentsply; Endométhasone N, Septodont and; Pulp Canal Sealer, Kerr); two based-mineral trioxide aggregate (MTA) (Endo CPM Sealer, EGEO Dental a
Publicado em: 2009
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6. Evaluation of the conventional and Lo-Solids® kraft process for Pinus taeda wood / Avaliação dos processos kraft convencional e Lo-Solids® para madeira de Pinus taeda
Este trabalho teve como objetivo avaliar a eficiência do processo de polpação Lo- Solids® em relação ao processo de polpação convencional para obtenção de polpa celulósica não branqueável (número kappa 58±2). A espécie de madeira utilizada foi Pinus taeda com 9 anos de idade, que se constitui na principal espécie utilizada no Brasil para obt
Publicado em: 2009
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7. Sistemas multiagentes para controle inteligente da caldeira de recuperação. / Multi-agent systems for the intelligent control of a recovery boiler.
Engineers have been introducing better support for procedures of monitoring complex conditions through the application of intelligent decentralized systems, implementing a variety of artificial intelligent techniques. Nowadays it is vastly known that these problems that are consequence of the functional complexity of monitoring conditioning can be solved tro
Publicado em: 2007
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8. Redução de poluentes de efluentes das indústrias de papel e celulose pela floculação/coagulação e degradação fotoquímica
The abatement of recalcitrant lignin macromolecules from effluents of pulp and paper industry was investigated by combined process. Flocculation and coagulation with aluminum sulfate and natural polyelectrolytes extracted from cactus Cereus peruvianus were used in the first step. After separation of solid residues by filtration, the photochemical methods usi
Química Nova. Publicado em: 2002-09
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9. Tratamento biológico de efluentes de indústrias de papel após floculação e coagulação com sais de alumínio e polieletrólitos naturais
The flocculation and sedimentation of recalcitrant organic compounds of high molecular weight using natural polyelectrolytes, extracted from the cactus Cereus peruvianus and Opuntia ficus indica, have been studied. Organic compounds of high molecular weight from effluents of paper and pulp industries are difficult for biological degradation. However, using a
Brazilian Archives of Biology and Technology. Publicado em: 2000
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10. Reparo de perfurações na furca de dentes de cães, seladas com endomethasone com e sem barreiras de hidroxido e sulfato de calcio
The purpose of the present study was to evaluate the histological and radiological response to two. materials used as a matrix under a zinc oxide-eugenol cement used as a sealant in the repair of furcation perforations in experimental animals. After anesthesia, rootcanal treatment of canaIs with zinc oxide-eugenol cement, furcal perforations were made in 24
Publicado em: 1999
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11. Produção de lipases e sua aplicação na eliminação de resinas em lignocelulosicos
Lipases produced from Penicillium citrinum in the Yeast Extract Medium MEL and Ammonium Sulfate Medium MSA have mantained an optimum temperature of 30 °C and pH between 8,0 - 8,5. Their pH s were around 2,2 - 3,0 (MSA medium), and 6,5 - 7,8 (MEL medium) in the maximum production of extracellular lipolytic activity. It was observed that, mantaining the lipas
Publicado em: 1997
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12. Gene expression in the pulp of ripening bananas. Two-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis of in vitro translation products and cDNA cloning of 25 different ripening-related mRNAs.
mRNA was extracted from the pulp and peel of preclimacteric (d 0) bananas (Musa AAA group, cv Grand Nain) and those exposed to ethylene gas for 24 h and stored in air alone for a further 1 (d 2) and 4 d (d 5). Two-dimensional sodium dodecyl sulfate-polyacrylamide gel electrophoresis of in vitro translation products from the pulp and peel of these fruits reve