This paper presents a systematic knowledge of the chemical composition, type of molding and treatment, mechanical and thermal properties, of aluminium-silicon (Al-Si) alloys applied in the manufacture of structural parts of reciprocating internal combustion engines (RICE), with the aim of providing support for the development of researches when compare, analyze or select the presented alloys. For which, a first paper was presented that revealed that structural parts of these types of engines are manufactured with Al-Si alloys. This second part establishes the importance that Al-Si alloys will have in reducing emissions of polluting gases, problematic that the world has. In response, the article presents the benefits and properties of Al-Si alloys of the series ANSI AA 3xx.0 and 4xx.0, being its low density which allows a lower fuel consumption compared to high density materials, for which are applied in structural parts of the RICE type Otto. A brief description of the manufacture of Al-Si alloy parts for RICE is also made. Finally, its present the structuring of a table that shows the ANSI AA 3xx.0 and 4xx.0 alloys applied in the manufacture of structural parts of RICE Otto, concluding that the technical information of the industrial applications of the alloys, have been developed and structured in a systematized way, to provide detailed and comparative knowledge between the properties.

Currently, custom orthotics are being built for physical rehabilitation using 3D rapid prototyping, due to this it is important to know their mechanical resistance, due to it has been proposed to test 3D printed specimens with PLA and ABS filaments. The test specimens were designed using CAD software, based on ASTM D256; Later they were 3D printed with a cubic and tri-hexagonal filling structure in PLA and ABS materials. Several tests were carried out to analyze the resistance of the test pieces: the Izod pendulum impact test, microscopy of the breaking surface and the SHORE D hardness analysis. Based on the results obtained, it was determined that the 3D printed specimen with ABS offers greater absorption of impact energy with respect to the PLA specimen; The filling structure of the test piece that gives the greatest mechanical resistance is the cubic structure compared to the tri-hexagonal structure. Furthermore, it is determined that the hardness of the PLA specimen is greater than that of the ABS specimen, finally it was observed that the fracture of the PLA specimen is linear, while the fracture of the ABS specimen is zigzag shaped.

The leading cause of death and disability in the young adult population is trauma. Worldwide, an estimated 278.6 million people suffered trauma in special relation to traffic accidents. In Latin American countries, statistics are double compared to world power and that 20% to 40% of hospital occupation was related to this cause. The present investigation was carried out with the objective of assessment as a predictor of mortality on the Revised Trauma Score (RTS) scale in the emergency service of the General Teaching Ambato Hospital (HGDA). It was of an observation-documented nature with a qualitative and quantitative approach, of a non-experimental design, synthetic analytical and cross-sectional retrospective. It was defined that the variables of the vital signs were found in a normal percentage in most of the patients attended and in whom the calculation of the fuel scale could not be performed due to the limitation of the lack of information due to an incomplete volume of Clinically, in addition to pre-hospital care an triage, the implementation of RTS is needed to improve the time in care that influence the prognosis of these critically ill patients.

The objective of this article is to reveal the impact of a combined cooperative learning strategy and information and communication technologies to improve English language learning. The study population was of 100 students: 50 from the intervention group and 50 from the control group, who belonged to the Chemical Engineering degree at the Higher Polytechnic School of Chimborazo. Through a quasi-experimental analysis and control group, the development of the four language skills such as listening, reading, speaking, writing, and the two linguistic areas: grammar and vocabulary. The statistically analyzed results show that the students improved their skills in the English language proficiency. on geometric elements to reason about conditional probability. The productions analyzed before and after the instruction. The purpose was to contribute to the construction of the meaning of the formula programmed in the software or firmware of a network interface, by promoting the ability to carry out the cognitive construction of the communication channel and its behavior in a work setting. Students who developed this skill showed less difficulty in their resolutions and came up with new ideas on optimizing.

Mathematics and numbers are actually a linguistically based invention that characterizes the human species. Quantities exist in nature, from prehistoric times; stone tools, wheels, machines, and advanced computer systems have transformed the environments in which we live and evolve. Entropy is a function that establishes a relationship between macro and microstates. The history of the transformation and development of the human condition characterized by a change in cultural eras. Each period of the development of the history of art, science and language has its own tendencies and directions, and stand out by the struggle of tendencies of progress and decline. In all life spheres entropy establishes a function of the state of the system, which does not depend on the transition from one state to another, but depends only on the initial and final position of the system. In modern society, the globalization process has intensified and with it the entropy to its most probable configuration.