Engineering

Se denomina conflicto al choque entre dos o más personas a consecuencia de la distinta percepción que las partes involucradas tienen de un mismo problema o situación, esta diferencia de percepción es la que dará comienzo a una negociación en busca de la solución más adecuada que deberá ser real y duradera.

El Hombre posee una naturaleza que le proporciona la posibilidad de autodominio y le incita a la trascendencia .La posesión de esa naturaleza , que recibe como un don , le implica también una tarea:la del desarrollo de sus posibilidades . Los principios morales son indicativos de las vías de desarrollo natural que al hombre se le ofrecen y le posibilitan su relación con los valores o bienes cuya apropiación tiene como consecuencia ese desarrollo de su naturaleza.

 VACACIONES: Los empleados tienen derecho a un mínimo de 28 días naturales de vacaciones anuales, conservando su posición y salario promedio VS Por el primer año de trabajo se tiene derecho a seis días de vacaciones. Durante los siguientes años aumentará dos días cada año hasta llegar a 12 días de vacaciones.

El 6 de marzo de 1980 se publica en el DOF el Decreto en el que por causas de interés público se establece como Zona de Protección Forestal y Refugio de la Fauna Silvestre la región conocida como "La Primavera", con una superficie de 30,500 hectáreas, conservando la tenencia de la tierra quedando en manos de propietarios particulares, propiedad social en 11 ejidos y sólo una pequeña parte es propiedad del Gobierno del Estado.  Se ubica en los municipios de Zapopan, Tala, y Tlajomulco.

Porous metals have low densities and novel physical, mechanical, thermal, electrical, and acoustic properties. Hence, they have attracted a large amount of interest over the last few decades. One of their applications is for thermal management in the electronics industry because of their fluid permeability and thermal conductivity. The heat transfer capability is achieved by the interaction between the internal channels within the porous metal and the coolant flowing through them. This paper studies the fluid flow and heat transfer in open-cell porous metals manufactured by space holder methods by numerical simulation using software ANSYS Fluent. A 3D geometric model of the porous structure was created based on the face-centered-cubic arrangement of spheres linked by cylinders. This model allows for different combinations of pore parameters including a wide range of porosity (50 to 80 pct), pore size (400 to 1000 lm), and metal particle size (10 to 75 lm). In this study, water was used as the coolant and copper was selected as the metal matrix. The flow rate was varied in the Darcian and Forchheimer's regimes. The permeability, form drag coefficient, and heat transfer coefficient were calculated under a range of conditions. The numerical results showed that permeability increased whereas the form drag coefficient decreased with porosity. Both permeability and form drag coefficient increased with pore size. Increasing flow rate and decreasing porosity led to better heat transfer performance.

The current study presents the thermal control design of the 3U Cubesat "Pakal" from "Misión Colibrí". As part of the design requirements, a thermal analysis was carried out to study the effects of the space environment over the spacecraft. This was achieved by making a lumped parameter approach in the critical thermal cases and studying the effects of environmental heat fluxes on each critical component. The model was verified using Thermal Desktop software. Then a Passive Thermal Control (PTC) was proposed to keep critical components at their operating temperature. The proposed PTC consists of two types of passive control: thermal coatings and single-layer insulation.

A MILP and genetic algorithm optimization model for the sequencing of jobs in a medium-sized factory, dedicated to the manufacturing of home furniture, where different categories and types of articles are produced and whose routes and manufacturing processing times vary widely, are proposed. Different scenarios are considered for the objective function based on minimizing makespan and tardiness. The results of the optimization for an instance of 24 jobs on five machines, chosen as a representative instance of the order sizes that are handled by the company, show important reductions in the productive system's usage times, oscillating between 10% and 20% with respect to a random initial sequence in the production plan. Improvements were similar in both techniques, the main difference being the solution time of each one.

The motor disability is a limitation for people who suffer to get a job and be integrated into the country's industries. A lot of tools have been developed for rehabilitation or improving their motor skills, but not to be included in the industries. This paper presents a proposal for an application of current techniques for the motor disabled people inclusion through the development of a brain-computer interface (BCI) that, based on a device that captures real-time electroencephalogram (EEG) brainwave, can take decisions or activities without the need of movement. This research was conducted with various people in a water fountains company, obtaining satisfactory results. Experimental data show the accuracy of the device, from the training stage to the testing stage.

There is an unmet medical need for effective treatments for hospitalized patients with coronavirus disease 2019 (COVID-19). Ribavirin is a broad-spectrum antiviral with demonstrated in vitro activity against multiple viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This trial evaluated the potential of ribavirin inhalation solution (ribavirin aerosol) to reduce COVID-19 disease severity in adults with confirmed SARS-CoV-2 infection and a diagnosis of respiratory distress. This phase I, multicenter, open-label, nonrandomized trial was conducted from February 2021 through August 2021. Patients received ribavirin aerosol (100 mg/ml for 30 min or 50 mg/ml for 60 min) twice daily for up to 6 days. The primary end point was change from baseline in clinical status severity, rated on a 7-point scale (1 [death]; 7 [not hospitalized; no limitations on activities]), at day 7 (or end-of-treatment/early termination) and day 30 (follow-up). Fifty-one patients were treated with ribavirin aerosol (mean age, 51.5 years; 78.4% men); mean number of doses was 9.7 (range, 1-12). Improvement of ≥1 level in clinical status severity was observed in 31.4% (16/51) and 78.4% (40/51) of patients at end-of-treatment and day 30, respectively. Of 21 patients who required a ventilator, 16 (76.2%) were able to discontinue ventilator use. Five patients (9.8%) died between end-of-treatment and day 30. Three patients (5.9%) discontinued study treatment due to adverse events. No deaths were considered related to study treatment. These data provide preliminary evidence that ribavirin aerosol may be an efficacious treatment for respiratory distress in adults with COVID-19. Study Highlights WHAT IS THE CURRENT KNOWLEDGE ON THE TOPIC? In a subset of patients, coronavirus disease 2019 (COVID-19) disease progresses to involve the lower respiratory tract potentially leading to acute respiratory distress syndrome. Ribavirin is a broad-spectrum antiviral medication with demonstrated in vitro activity against multiple viruses, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).