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Effect of copper-enriched layers on localized corrosion of aluminium-copper alloys

Abstract: Copper-enriched layers were developed onto aluminum-copper alloys using alkaline etching in sodium hydroxide, for both, sputter deposited and bulk conditions. Enriched alloys were evaluated by potentiodynamic polarization in sodium chloride solution in order

en es pt

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Manufacture of titanium dioxide scaffolds for medical applications

Abstract: The skeletal system is vulnerable to injuries and bone loss over the years, making the use of autologous or allogeneic implants necessary. However, these implants have complications, such as the limited amount of bone to be extracted and the cell death at the

en es pt

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Implementation of on electromagnetic system for controlling resistance and speed in indoor cycling

Abstract: Advances in knowledge and technology in various fields of human life and, particularly, in sports have resulted in innovative systems for professional sportsmen training. Here, we designed an electromagnetic system for practicing indoor cycling; this system c

en es pt

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Night air conditioning of buildings by external air ventilation
Debrayan Bravo-Hidalgo

Abstract: Buildings contain the environment in which almost all human activities take place, and therefore, nowadays, they represent a great sink of energy. Establishing thermal comfort conditions within these buildings is responsible for a large portion of their energ

en es pt

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Degradation, mater uptake, injectability and mechanical strength of injectable bone substitutes composed of silk fibroin and hydroxyapatite nanorods

Abstract: Injectable bone substitutes are generally composite materials capable of being extruded through a device; they consist of a solid phase inside a matrix that allows the easy movement of particles. Injectable bone substitutes have the advantage of allowing its

en es pt

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Morphology, mechanical strength and degradation of polyhydroxyalkanoate scaffolds

Abstract: Tissue engineering (TE) seeks to improve the unsatisfactory development of implants and medical procedures to solve bone and cartilage injuries. TE aims at regenerating tissues using cell growth platforms (scaffolds), which may consist of natural polymers suc

en es pt

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Design of longitudinal finned tubes adjusted with the Cesàro curve

Abstract: This paper proposes a process of higher heat transfer efficiency, through a fractal design over Cesaro curve as an extend surface for an exchange tube. Our designs yielded better results applying finite element analysis compared with the smooth surface common

en es pt

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Mathematical software tools for teaching of complex numbers

Abstract: This article proposes a method for teaching complex numbers and their corresponding operations using mathematical software tools. Initially, the document introduces MATLAB, a paid software, and GeoGebra, a free software. Subsequently, the paper explains the p

en es pt

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