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Mostrando ítems 7961-7970 de 18873
A study on friction coefficient and wear coefficient of coated systems submitted to micro-scale abrasion tests
(2013)
Several works on friction coefficient during abrasive wear tests are available in the literature, but only a few were dedicated to the friction coefficient in micro-abrasive wear tests conducted with rotating ball. This ...
Surface integrity and residual stresses analysis by strain gages after hard turning process of case hardened steel aisi 8620
(2010)
This work aims an analysis on the functional surface integrity resulting from turning mechanical components manufactured from case hardened steel AISI 8620 with 1 millimeter average layer depth and hardness of 58-62HRC. A ...
Structure of cobalt (II) perchlorate adsorbed on silica gel surface chemically modified with benzimidazole molecule
(1997-12-01)
Covalently attached benzimidazole molecules on silica gel surface, ≡SiL (where L = N-propyl-benzimidazole), adsorbs Co(ClO4)2 from non-aqueous solvent by forming a surface complex according to the reaction: m ≡SiL + Co(ClO4)2 ...
Theoretical study of the stoichiometric and reduced Ce-Doped TiO2 anatase (001) surfaces
(Amer Chemical Soc, 2015-03-05)
The effects of Ce doping (2.6%) on the oxygen vacancy (V-O) formation energy (Et) and the electronic structure of the anatase TiO2(001) surface were studied by ineans of periodic density functional calculations within the ...
Análise das características de operação e desempenho de micro jatos sintéticos
(Universidade do Vale do Rio dos Sinos, 2012-11-27)
The rising power consumption of electronic components requires higher and higher thermal dissipation. Current fan systems, commercially known as "coolers", are becoming ineffective to cope with this demand since their ...
Estudo experimental de jatos sintéticos para resfriamento
(Universidade do Vale do Rio dos Sinos, 2012-03)
With the rapid evolution of technology, electronics have become more compact and with higher processing power, increasing heat generation. Thus, there is a need to develop new forms of cooling, due to the low efficiency ...
Análisis del modelo matemático de una bobina plana de calentamiento por inducción y optimización de su eficiencia
(2018)
An energy efficiency of a flat induction heating coil is optimizated using the FEMM finite element software building its geometry and linking it to Matlab using a genetic algorithm. The optimized efficiency is 86% with a ...
Comparative assessment of a mountain river flow resistance – 1D-: sensitivity and prediction using data-based approaches
(Universidad de Cuenca, 2022-11-21)
Mountain -rivers are, by far, the most challenging case to model because of its bed characteristics and their energy
dissipation mechanisms depending on its irregular morphology. Resistance, roughness, or friction parameter ...
Guía didáctica para el tema: aplicaciones del cálculo integral, mediante el uso de infografías y el software GeoGebra
(Universidad de Cuenca, 2023-01-30)
The present degree work “TEACHING GUIDE FOR THE THEME:
APPLICATIONS OF INTEGRAL CALCULUS, THROUGH THE USE OF
INFOGRAPHIES AND GEOGEBRA SOFTWARE" responds to the problems
encountered in the teaching of integral calculus, ...
Comparación del efecto P-Delta en edificaciones de hormigón armado con columnas regulares e irregulares
(2023-02)
The P-Delta effect is a non-linear secondary analysis, which is the product of the application of an axial load to structural elements, whose analysis becomes complex in tall structures and slender sections.
In this work, ...