Behavior Modification
Mostrando 1-12 de 225 artigos, teses e dissertações.
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1. BEHAVIOR OF THERMALLY MODIFIED WOOD TO BIODETERIORATION BY XYLOPHAGE FUNGI
ABSTRACT Thermally modified wood undergoes chemical, physical, and mechanical modifications, resulting in changes in resistance to wood biodegrading agents. The objective of this study was to evaluate the resistance to biodeterioration of thermally modified wood by the industrial process VAP HolzSysteme® of Eucalyptus grandis, Pinus taeda and Tectona grandi
CERNE. Publicado em: 2020-09
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2. Novel PEG 4000 derivatives and its use in controlled release of drug indomethacin
The insertion of functional groups in polymer compounds may facilitate their interaction with different drugs. PEG polymers are widely used for their low melting point, low toxicity, drug compatibility, and hydrophilicity. They are used as pharmaceutical excipients for the formulation of conventional or modified released drugs and are designed to be upgraded
Quím. Nova. Publicado em: 2020-06
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3. IMPACT OF MELD SODIUM ON LIVER TRANSPLANTATION WAITING LIST
RESUMO Racional: Desde 2016 os EUA utilizam o MELD-Na para alocação de enxertos hepáticos, uma vez que o valor da natremia, quando adicionada ao MELD, aumenta a eficácia para prever a mortalidade na lista de espera. Entretanto, tal modificação não foi adotada no Brasil. Objetivo: Realizar uma simulação utilizando o MELD-Na como critério de or
ABCD, arq. bras. cir. dig.. Publicado em: 09/12/2019
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4. Produção e caracterização de revestimentos de ligas metálicas Cu-Sn em banho eletrolítico contendo glicina: ensaios preliminares
RESUMO Os problemas relacionados à corrosão são frequentes, podendo ocorrer nas mais variadas áreas, tais como, nas indústrias química, petroquímica, naval, de construção civil e automobilística, dentre outros setores produtivos. Portanto, métodos para prevenir a corrosão devem ser empregados para evitar a perda de materiais e o uso de revestimen
Matéria (Rio J.). Publicado em: 16/09/2019
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5. Influence of a Femtosecond Laser Surface Modification on the Fatigue Behavior of Ti-6Al-4V ELI Alloy
The objective of this investigation was to evaluate the influence of surface modification by femtosecond laser (with average fluence of 0.6 J/cm2 and scanning speed of 0.1 mm/s) on the fatigue resistance of Ti-6Al-4V ELI alloy. A significant reduction in the fatigue strength of the material modified by laser was observed. Residual tensile stresses generated
Mat. Res.. Publicado em: 01/07/2019
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6. Improvement in spray-drying technology for preparation of pregelatinized cassava starch
Abstract Native cassava starch was gelatinized under different pretreatment conditions (preheating temperature, starch concentration and heating time) and spray-dried. A rotational compound central design was used to test the three independent variables: the preheating temperature, starch concentration, and heating time, and the behavior of the system was a
Food Sci. Technol. Publicado em: 31/01/2019
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7. Wear behavior of Diamond-like Carbon Deposited on Ti6Al4V Prepared with Surface Mechanical Attrition Treatment
Surface modification by deposition of hard coatings is a way to overpass the poor wear resistance of some metallic materials and one potential material is the Diamond-Like Carbon (DLC). We investigated the wear behavior, and the adhesion of the DLC deposited on a Ti6Al4V (Ti64) alloy after Surface Mechanical Attrition Treatment (SMAT). The SMAT was applied u
Mat. Res.. Publicado em: 21/01/2019
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8. Continuous Scanning Technique with Barkhausen Magnetic Noise for Carbon Steel Sheets
This work studies the application of a Non-Destructive Inspection Technique (NDIT), based on the Magnetic Barkhausen Noise (MBN), for the detection of non-homogeneous regions in carbon steel plates. It presents the advances in the development of a variant of a new non-destructive magnetic test technique, called Continuous Scanning Magnetic Barkhausen Noise (
Mat. Res.. Publicado em: 10/01/2019
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9. Estabilidad de las fases U3Si5, USi2-x y USi2 al incorporar Al en solución. Experiencias de calorimetría diferencial de barrido
ABSTRACT U(Mo) alloys are being studied to be applied as a fuel for research and test reactors. When U(Mo) particles are dispersed in an Al matrix, it is known that an interdiffusion during fabrication process and / or irradiation. In this sense, irradiation tests have shown that this IL has a bad behavior under irradiation coming up the addition of Si to Al
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Study of Mechanical and Wear Behaviour of Hyper-Eutectic Al-Si Automotive Alloy Through Fe, Ni and Cr Addition
Effect of Fe, Ni and Cr addition on the wear behavior of hyper-eutectic Al-Si automotive alloy has been studied. Dry sliding wear tests have been conducted using pin-on-disc wear testing machine under normal loads of 20N and constant sliding speed of 0.64 ms-1. Influence of Fe addition to the base alloy increases the wear rate due to the formation of needle
Mat. Res.. Publicado em: 11/06/2018
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11. Cellulose nanomaterials: size and surface influence on the thermal and rheological behavior
Abstract Cellulose nanocrystals (CNC) and nanofibrils (CNF) were obtained by acid hydrolyzis and mechanical treatment, respectively, of cellulosic fibers from paper. Additionally, surface modification was performed for CNC by neutralization (NaOH) and oxidation (TEMPO). The thermal stability, surface properties and rheological behavior of these nanomaterial
Polímeros. Publicado em: 21/05/2018
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12. Electrodeposition of Prussian Blue/Carbon Nanotube Composites at a Liquid-Liquid Interface
The iron complex hexacyanoferrate (Fe4[Fe(CN)6]3), known as Prussian Blue (PB), was electrodeposited over a free-standing carbon nanotube (CNT) film assembled at the interface between two immiscible liquids, water and 1,2-dichlorobenzene. Polarization of the interface achieved through a fixed potential or under potential variation enabled iron present inside
J. Braz. Chem. Soc.. Publicado em: 2018-05