Surface Selection
Mostrando 13-24 de 591 artigos, teses e dissertações.
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13. Influence of the anodizing process variables on the acidic properties of anodic alumina films
Abstract In the present work, the effect of the different variables involved in the process of aluminum anodizing on the total surface acidity of the samples obtained was studied. Aluminum foils were treated by the electro-chemical process of anodic anodizing within the following variable ranges: concentration = 1.5-2.5 M; temperature = 303-323 K; voltage =
Braz. J. Chem. Eng.. Publicado em: 2017-10
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14. AVALIAÇÃO DE DIFERENTES ROTAS DE ESFOLIAÇÃO LÍQUIDA PARA OBTENÇÃO DE NANOLAMELAS DE NITRETO DE BORO HEXAGONAL
Hexagonal boron nitride (h-BN), graphite analogous structure, has many interesting applications due to its excellent thermal, electrical and mechanical properties. In this study, different routes of liquid exfoliation using solvent and ultrasound were used to obtain two-dimensional (2D) nanosheets of h-BN. The efficiency of the exfoliative routes was evaluat
Quím. Nova. Publicado em: 2017-09
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15. Wear Behaviour of Electroless heat Treated Ni-P Coatings as Alternative to Electroplated hard Chromium Deposits
In this present study was evaluated the influence of heat treatment on the wear resistance of electroless high phosphorus nickel coating (9-10% P wt.). In addition, both untreated and treated Ni-P deposits were then compared to electroplated hard chromium coatings in terms of wear behaviour. Three different heat treatment conditions were performed at tempera
Mat. Res.. Publicado em: 24/07/2017
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16. Quality Evaluation of Chromatic Interpolation Algorithms for Image Acquisition System
ABSTRACT The main goal of the Libertad 2 mission is to take images of the Earth’s surface in the visible spectrum with a multispectral sensor and send them as a Bayer array. To carry out the reconstruction in land of these images and to view them in a RGB color model, it is necessary to use a color interpolation algorithm to determine the values of the dif
J. Aerosp. Technol. Manag.. Publicado em: 2016-09
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17. Machinability Evaluation in Hard Milling of AISI D2 Steel
Milling of hardened steel components provides considerable benefits in terms of reduced manufacturing cost and time compared to traditional machining. Temperature variation in milling is an important factor affecting the wear of cutting tools. The poor selection of milling parameters may cause excessive tool wear and increased work surface roughness. Hence,
Mat. Res.. Publicado em: 01/03/2016
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18. ALK-5 Inhibition: A Molecular Interpretation of the Main Physicochemical Properties Related to Bioactive Ligands
Activin-like kinase 5 (ALK-5) receptor represents an attractive object to treat cancer. Analyses on the quantitative structure-activity relationship were performed to explore the relationship between the molecular structure of 1,5-naphthyridine, pyrazole and quinazoline derivatives and the inhibition of the activin-like kinase 5. From a data set containing 5
J. Braz. Chem. Soc.. Publicado em: 2015-09
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19. Theranostic applications of phage display to control leishmaniasis: selection of biomarkers for serodiagnostics, vaccination, and immunotherapy
AbstractPhage display is a high-throughput subtractive proteomic technology used for the generation and screening of large peptide and antibody libraries. It is based on the selection of phage-fused surface-exposed peptides that recognize specific ligands and demonstrate desired functionality for diagnostic and therapeutic purposes. Phage display has provide
Rev. Soc. Bras. Med. Trop.. Publicado em: 2015-08
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20. Wet oxidation of glycerol into fine organic acids: catalyst selection and kinetic evaluation
The liquid phase oxidation of glycerol was performed producing fine organic acids. Catalysts based on Pt, Pd and Bi supported on activated carbon were employed to perform the conversion of glycerol into organic acids at 313 K, 323 K and 333 K, under atmospheric pressure (1.0 bar), in a mechanically agitated slurry reactor (MASR). The experimental results ind
Braz. J. Chem. Eng.. Publicado em: 2014-12
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21. The 3D CFD study of gliding swimmer on passive hydrodynamics drag
The aim of this study was to analyze the effect of depth on the hydrodynamic drag coefficient during the passive underwater gliding after the starts and turns. The swimmer hydrodynamics performance was studied by the application of computational fluid dynamics (CFD) method. The steady-state CFD simulations were performed by the application of k - omega turbu
Braz. arch. biol. technol.. Publicado em: 2014-04
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22. Geometric effects of sustainable auxetic structures integrating the particle swarm optimization and finite element method
The development of new materials based on industrial wastes has been the focus of much research for a sustainable world. The growing demand for tyres has been every year exacerbating environmental problems due to indiscriminate disposal in the nature, making a potentially harmful waste to public health. The incorporation of rubber particles from scrap tyres
Mat. Res.. Publicado em: 11/03/2014
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23. A decision-tree-based model for evaluating the thermal comfort of horses
Thermal comfort is of great importance in preserving body temperature homeostasis during thermal stress conditions. Although the thermal comfort of horses has been widely studied, there is no report of its relationship with surface temperature (T S). This study aimed to assess the potential of data mining techniques as a tool to associate surface temperature
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-12
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24. Enhanced lipase recovery through RSM integrated differential evolutionary approach from the fermented biomass
The aim of this work was to apply a modeling integrated optimisation approach for a complex, highly nonlinear system for an extracellular lipase extraction process. The model was developed using mutation, crossover and selection variables of Differential Evolution (DE) based on central composite design of Response Surface Methodology. The experimentally vali
Braz. arch. biol. technol.. Publicado em: 2013-10