Abrasion
Mostrando 1-12 de 241 artigos, teses e dissertações.
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1. SYNTHESIS OF TOLUENE DIISOCYANATE URETHANE PREPOLYMER USING CASTOR OIL AND EVALUATION OF MECHANICAL PROPERTIES
This research is the synthesis of urethane prepolymer cast elastomer which had been produced using toluene diisocyanate and castor oil to replace the synthetic polyol, from petroleum origin, and the evaluation of mechanical properties of the polyurethane. The focus was to replace polyol from petroleum to vegetable material looking for renewable resources. Th
Química Nova. Publicado em: 2022
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2. Lignin-modified road marking paint: weathering aging studies
Abstract The accelerated artificial aging with ultraviolet radiation, viscosity, density, no-pick-up time, flexibility, and abrasion resistance of lignin-modified road marking paint were evaluated. The addition of lignin did not cause significant changes in the physical chemistry, flexibility and no-pick-time test compared to the precursor paint. The additio
REM, Int. Eng. J.. Publicado em: 2021-06
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3. Healing effects of natural latex serum 1% from Hevea brasiliensis in an experimental skin abrasion wound model,
Abstract Background Dermabrasion is related with mechanical and surgical traumas on the skin; usually topical antiseptics and/or saline have been used for healing. Natural products for wound healing can also be used for abrasions, such as latex from Hevea brasiliensis. Objective This study aimed to evaluate the in vitro viability and migratory/proliferativ
An. Bras. Dermatol.. Publicado em: 2020-08
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4. Effects of Oral Oxytetracycline-Therapy on Wound Progression and Healing Following Aeromonas caviae Infection in Nile Tilapia (Oreochromis niloticus L.)
Abstract The effects of oral oxytetracycline (OTC)-therapy against Aeromonas caviae infection as well as the wound progression and healing in intramuscular (IM) and abrasion-immersion (AI) challenged Nile tilapia juveniles were evaluated. The IM challenge caused significantly (p < 0.05) high mortalities (90%) compared to AI challenge (40%). The mortalities r
Braz. arch. biol. technol.. Publicado em: 20/12/2019
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5. The effect of Allium sativum in experimental peritoneal adhesion model in rats
Abstract Purpose: To evaluate the effect of garlic on formation of postoperative adhesions in rats. Methods: Twenty-four Sprague dawley rats were divided into three groups. In Group 1 (sham), laparotomy was performed and stitched up. In Group 2 (control), after laparotomy was performed, punctate hemorrhage was induced by cecal abrasion in the cecum and 2 c
Acta Cir. Bras.. Publicado em: 09/12/2019
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6. Mechanical behavior of PVD coatings deposited on ADI
ABSTRACT In this work, the mechanical behavior of the coated ADI system is studied. For this purpose, single layer Ti and bilayer Ti/TiN and TiAl/TiAlN coatings, with different thicknesses, were deposited by the PVD technique of cathodic arc deposition on high strength ADI substrates using industrial and experimental devices. The characterization of the coat
Matéria (Rio J.). Publicado em: 25/11/2019
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7. Influência do tipo e teor de pigmento no estado endurecido de ladrilhos hidráulicos
Resumo A aplicação de ladrilhos hidráulicos voltou a ser valorizada nos últimos anos em função de sua beleza e versatilidade. O ganho de resistência sem necessidade de queima é uma considerável vantagem, mas o tempo e o custo de produção e a manutenção em estoque são algumas desvantagexns observadas. Como são materiais que permanecem expostos
Cerâmica. Publicado em: 14/11/2019
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8. Fundente para Recargue por Soldadura con Arco Sumergido a Partir de Ferrocromo-manganeso y Escoria de la Reducción Simultánea de Cromita y Pirolusita
Abstract The obtaining of a flux for hardfacing by Submerged Arc Welding (SAW), using ferrochrome-manganese and slag obtained from the simultaneous carbothermal reduction of chromite and pyrolusite is addressed. The ferrochrome-manganese and the slag were obtained, conceiving that both products satisfy the requirements of the components (alloy system and ma
Soldag. insp.. Publicado em: 24/10/2019
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9. Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites
Rigid particles have been incorporated into laminated composites, especially to enhance their bending performance attributed to the stiffening of the matrix phase (i) and the increased interlaminar shear resistance (ii). In order to better evaluate the improvement mechanism provided by the particulate inclusions, this work investigates the incorporation of m
Mat. Res.. Publicado em: 17/10/2019
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10. Avaliação da resistência de união de uma cerâmica de óxido de zircônia submetida a tratamentos de superfície por abrasão
Resumo Introdução A cimentação adesiva, com cerâmicas puras, é um passo relevante no estabelecimento da longevidade de trabalhos protéticos, sendo estes os melhores materiais utilizados para a reposição de dentes perdidos, de forma a reabilitar o sorriso. O sistema cerâmico de zircônia não se beneficia do tratamento com ácidos e necessita de di
Rev. odontol. UNESP. Publicado em: 12/09/2019
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11. Influence of the incorporation of triclosan methacrylate on the physical properties and antibacterial activity of resin composite
Abstract The incorporation of antimicrobials in the composites as an attempt to reduce bacterial adhesion without jeopardizing mechanical properties is a challenge for Dentistry. Objective: To evaluate the bacterial adhesion and physical properties of a composite containing the methacrylate triclosan- derivative monomer (TM). Methodology: TM was synthesize
J. Appl. Oral Sci.. Publicado em: 09/09/2019
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12. Waste tires and the burning of sugarcane bagasse in the manufacture of concrete pavers (pavers)
Resumo A pesquisa desenvolvida tem como proposta analisar a potencialidade de utilização da cinza do bagaço da cana-de-açúcar e do resíduo de pneus na confecção de blocos de concreto para pavimentação (pavers) em substituição do agregado miúdo, a areia natural. Para atingir este objetivo a metodologia adotada compreende etapas como: a caracteriz
Rev. IBRACON Estrut. Mater.. Publicado em: 18/07/2019