Hernando González S., Clotario I. Peralta G., Yasmidt Vera,
Las dificultades que tienen los estudiantes en el aprendizaje de la Física, se deben a diferentes factores. Queremos hacer hincapié en el papel preponderante que tiene la comprensión adecuada de los conceptos en el entendimiento del mundo físico. La Física se fundamenta en modelos, leyes, teorías, principios, postulados, los cuales tienen anexo un esquema conceptual que, si es bien entendido y aplicado mejorará sustancialmente el aprendizaje de esta ciencia.
Tópico(s): Knowledge Societies in the 21st Century
2000 - | Paideia Surcolombiana
Andrej Atrens, Qian Liu, Clotario V. Tapia‐Bastidas, Evan Gray, Bartolomeus Irwanto, Jeff Venezuela, Qinglong Liu,
The influence of hydrogen on the mechanical properties of four, medium-strength, commercial, quenched-and-temped steels has been studied using the linearly increasing stress test (LIST) combined with cathodic hydrogen charging. The relationship was established between the equivalent hydrogen pressure and the hydrogen charging overpotential during cathodic hydrogen charging, though the use of electrochemical permeation experiments and thermal desorption spectroscopy. The cathodic hydrogen charging ...
Tópico(s): Material Properties and Failure Mechanisms
2018 - Multidisciplinary Digital Publishing Institute | Corrosion and Materials Degradation
Qinglong Liu, Evan Gray, Jeffrey Venezuela, Qingjun Zhou, Clotario V. Tapia‐Bastidas, Mingxing Zhang, Andrej Atrens,
Thermal desorption spectroscopy (TDS) is used to analyze hydrogen in 980DP after (i) electrochemical charging, and (ii) gaseous charging. The hydrogen concentration increases with (i) a more negative charging potential and (ii) an increasing hydrogen gas pressure. For charging in 0.1 M NaOH, the hydrogen fugacity for 980DP is similar to that for (i) low interstitial steel, and (ii) MS1500, and is greater than that for the 3.5NiCrMoV steel. This indicates an influence of steel chemistry on the hydrogen ...
Tópico(s): Welding Techniques and Residual Stresses
2017 - Wiley | Advanced Engineering Materials
Andrés Rigail-Cedeño, Miriam Lazo, Julio Gaona, Joshua Delgado, Clotario V. Tapia‐Bastidas, Ana Rivas, Estephany Adrián, Rodrigo Perugachi,
The circular economy promotes plastic recycling, waste minimization, and sustainable materials. Hence, the use of agricultural waste and recycled plastics is an eco-friendly and economic outlook for developing eco-designed products. Moreover, new alternatives to reinforce recycled polyolefins and add value to agroindustrial byproducts are emerging to develop processable materials with reliable performance for industrial applications. In this study, post-consumer recycled high-density polyethylene ( ...
Tópico(s): Polymer crystallization and properties
2022 - Multidisciplinary Digital Publishing Institute | Journal of Manufacturing and Materials Processing