REVISTA DE CIENCIAS TECNOLÓGICAS 2024-01-20T00:51:21+00:00 Luis Jesús Villarreal Gómez Open Journal Systems <p><strong>Purpose of the Journal</strong></p> <p>The purpose of the <strong>Revista de Ciencias Tecnológicas (RECIT)</strong> is to disseminate the original research and technological development carried out by the scientific community in all areas that include engineering and technology.</p> <p><strong>16 main topics are included:</strong></p> <p>1. Aerospace</p> <p>2. Applied Bioengineering</p> <p>3. City</p> <p>4. Design</p> <p>5. Edification and Building</p> <p>6. Electronic and Instrumentation</p> <p>7. Energetic Systems</p> <p>8. Innovation Strategies and Technological Development</p> <p>9. Life Cycle Assessment</p> <p>10. Material Sciences</p> <p>11. Mechanical Design and Manufacture</p> <p>12. Nanotechnology</p> <p>13. Physical and Chemical Sciences</p> <p>14. Sciences of Design</p> <p>15. Software and Emerging Technologies</p> <p>16. Sustainable Development Goals</p> <p> </p> <p>As well as other related lines. All published works are original and have been strictly reviewed.</p> <p><strong>Community and scientific field</strong></p> <p>The <strong>Revista de Ciencias Tecnológicas (RECIT)</strong> is aimed at the scientific community and the public interested in any area of engineering and technology, as well as the areas of architecture and design. The contents published in the journal are aimed at international and national researchers from public and private universities, research centers, government institutions, engineers and workers from private industry companies, as well as undergraduate and post-graduate students.</p> <p><strong>Publication language</strong></p> <p>English/Spanish</p> <p><strong>Editing formats</strong></p> <p>The preferred file format for editing in the journal is Microsoft word, which also accepts .pdf files. Files in .jpg, .png, .tiff, and .ppt are accepted for figures. For videos, only .mp4 files are accepted.</p> <p><strong>Declaration</strong></p> <p>The concepts that appear in this publication are the sole responsibility of the authors. The content of the advertising is the responsibility of the advertising companies and institutions. The partial or total reproduction of any article is authorized on the condition of making a bibliographic reference to the <strong>Revista de Ciencias Tecnológicas (RECIT)</strong>.</p> <div style="background-color: #eeeeee; border: 1px solid #999999; padding: 2%; text-align: center;"> <p>Open reception of articles for our July-September 2023 issue</p> <ol> <li style="text-align: left;">First, check if your manuscript meets all the requirements specified in the <a href="">Submission Preparation Checklist</a></li> <li style="text-align: left;">If your manuscript meets all the requirements, please register <a href="">here</a>, log in and send it to us <a href="">here</a></li> <li style="text-align: left;">Please read all the <a href="">refereeing steps</a> you have to go through to get to the home stretch</li> </ol> <p style="text-align: left;">The Journal accepts Pre-Prints!</p> </div> <p align="center"><strong><a title="Facebook" href=""><img src="" alt="" /></a> <a title="Youtube" href=""><img src="" alt="" /></a></strong></p> Mesh control with FEM to characterize a mechanical joint in research and prototyping applications 2023-12-20T17:44:47+00:00 Jesús Vicente González Sosa Enrique Ávila-Soler <p><em>One of the key features of mechanical seals is to achieve effective sealing between two mechanical parts to prevent displacement and coolant leakage in industrial applications. Currently most of these elements are produced using neoprene, compressed cardboard, tar paper, laminated graphite, so we sought to produce them using ABS and PLA materials. For the design we used CAD software with educational license intended for educators and researchers, then a finite element analysis is performed according to the specifications of the product. In this sense, the importance of FEM as an evaluation tool has been identified in the context of this trend of using innovative technologies for research. As part of the results, the data obtained allow the selection of both variables and physical properties of the connecting rod and can be used to develop projects and studies of this nature applicable in case studies related to mechanical, mechatronic, industrial and electronic engineering. Finally, the variables Factor of Safety (FS), Von Mises Stress (VM) and YZ Stress, are analyzed after simulation by FEM, providing a range of values for use in engineering applications with different techniques in which connecting rods are used, FS [ 0.55, 12.26], VM [1.63, 36.45], YZ [-1.36, 10.13]. As for the other results presented in this study, the correlation coefficient is used as a statistical part with graphs to evaluate the simulation, the dependence of variables and parameters relevant to the case study, so a strong relationship was observed between the variables; plane stress, deformation, displacement and Von Mises stress, whose values range between 0.87 and 0.99, showing a strong relationship between these variables and, for the others, it should be considered to improve the relationship and increase the coefficient.</em></p> 2024-02-06T00:00:00+00:00 Copyright (c) 2024 Jesús Vicente González-Sosa, Enrique Ávila-Soler Development and redesign of flexible packaging under sustainability criteria 2024-01-20T00:51:16+00:00 Johnatan Gabriel Bernal-Carrillo Fernando Sebastián Chiwo-González Ana del Carmen Susunaga-Notario Mayra del Ángel–Monroy Hugo Arcos-Gutiérrez Isaías Emmanuel Garduño-Olvera <p><em>The circular economy and sustainable development are critical issues today, given the growing environmental pollution caused by solid waste, especially plastics. Furthermore, plastic waste has raised significant social concerns and alerted plastic product designers. Therefore, developing or redesigning plastic products in the flexible packaging industry is imperative to ensure their recyclability at the end of their life cycle. It is necessary to ensure that the mechanical and barrier properties of the ecological plastic packaging remain intact for specific uses. The current study aims to redesign flexible packaging, focusing on providing the mechanical and barrier properties of the packaging suitable for food industry applications, thus offering a solution through new design proposals that allow the development of sustainable and flexible packaging, emphasizing material reduction and recyclability. This study assessed and compared the mechanical properties of the proposed packaging with those of existing products. The results demonstrated the feasibility of reducing plastic film thickness or eliminating layers in a tri-laminated structure and transitioning to a bi-laminated structure. This adjustment did not compromise the mechanical and barrier properties; the oxygen barrier remained at 35.39 cc/m<sup>2</sup>*day, and the humidity stood at 0.57 mg/m<sup>2</sup>*day. This investigation led to a 26.48% reduction in the raw material consumption of laminated coils and 12.68% in Doypack type packaging used in food applications. Consequently, the decreased material usage and adoption of monomaterial structures significantly minimized the environmental impact of plastic waste contamination due to the possibility of mechanically recycling the final product.</em></p> 2024-01-18T00:00:00+00:00 Copyright (c) 2024 Johnatan Gabriel Bernal-Carrillo, Fernando Sebastián Chiwo-González, Ana del Carmen Susunaga-Notario, Mayra del Ángel–Monroy, Hugo Arcos–Gutiérrez, Isaías Emmanuel Garduño-Olvera Synthesis and characterization of calcium titanate (CaTiO3) as a potential electrochemical sensor of organic pollutants in aqueous solution 2024-01-18T16:40:10+00:00 Juan José Hinostroza Balter Trujillo Navarrete Rosa María Félix Navarro Francisco Paraguay Delgado Jassiel R. Rodríguez Barrera Adrián Ochoa Terán <p><em>Organic contaminants are highly toxic and volatile and accumulate in fatty tissues. Due to their persistence and mobility, it is possible to find them practically anywhere on the planet, even where they have never been used. For this reason, monitoring and vigilance in water bodies are essential. We synthesized calcium titanate (CaTiO<sub>3</sub>) particles using the solid-state method in the present research. Several physicochemical techniques characterized the particles: energy dispersive spectroscopy (EED), X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), diffuse reflectance spectroscopy (ERD), and electrochemical: cyclic voltammetry (CV), among others.; It was found via XRD and Raman that the crystalline structure is orthorhombic with space group Pbnm. The synthesized CaTiO<sub>3</sub> particles have an average diameter of ≈ 2 µm. Furthermore, the value obtained for the energy gap (E<sub>g</sub>) was 3.41 eV; it also presents a low energy step at a value of 2.66 eV, which may correspond to the mingap electronic states. The glassy carbon electrode modified with the CaTiO<sub>3</sub> film showed a sensitivity for determining nitrobenzene (NB) in an aqueous solution. Therefore, it can be concluded that the development of CaTiO<sub>3</sub> particles is a viable alternative to be used as a sensor of organic contaminants in water.</em></p> 2024-02-08T00:00:00+00:00 Copyright (c) 2024 Juan José Hinostroza, Balter Trujillo Navarrete, Rosa María Félix Navarro, Francisco Paraguay Delgado, Jassiel R. Rodríguez Barrera, Adrián Ochoa Terán Life cycle cost comparison of reinforced concrete buildings locate in different types of soils in Mexico City 2024-01-20T00:51:19+00:00 Henry Emmanuel Reyes Heredia Juan Bojórquez Mora Edén Bojórquez Mora Manuel Antonio Barraza Guerrero Herían Alberto Leyva Madrigal <p><em>Reinforced concrete buildings subjected to seismic events may present different damages even though they have similar characteristics when designed with the regulatory seismic load combination. This results in higher costs and inconsistent structural reliability over the life cycle of the buildings. This work focuses on comparing the life cycle costs of reinforced concrete buildings of various levels located on soil with period Ts=0.75s and Ts=2.0s in Mexico City. For this purpose, a set of seismic load combinations proposed for the design of the buildings were used. The capacity of the designs was evaluated by incremental dynamic analysis and the structural reliability was examined by structural demand hazard curves. In addition, simulations of seismic demands were performed to estimate the damage that could occur during the life cycle of the buildings. Finally, initial and total damage costs were obtained for all the buildings analyzed. The results showed that some proposed load combinations provided cost savings while improving the structural performance of the buildings over time. These findings could be valuable to the construction industry, as they offer a clearer picture of how to optimize the design and seismic resistance of buildings.</em></p> 2024-01-17T00:00:00+00:00 Copyright (c) 2024 Henry Emmanuel Reyes Heredia, Juan Bojórquez Mora, Edén Bojórquez Mora, Manuel Antonio Barraza Guerrero, Herían Alberto Leyva Madrigal Influence of particle size distribution on the properties of cotton gin residue and urea formaldehyde resin particleboards 2023-10-27T16:14:41+00:00 Luciano Massons Florencia Araceli Benitez Regina Rosario Piccoli Maria Fernanda Carrasco Raul Esteban Puga Carlos Defagot <p><em>The present paper exposes the feasibility of producing particleboards with wastes from the cotton industry in northeastern Argentina, agglomerated with urea-formaldehyde resin, as an alternative to replace wood with lower-cost lignocellulosic waste, for there are no measures to achieve an efficient final disposal. The aim is to achieve particleboards suitable for the construction of housing enclosures and simple furniture. With the intention of optimizing boards behavior, the influence of the particle size distribution and their morphological characteristics on the mechanical properties, water resistance, and final quality of the boards is investigated. Three situations are compared: unclassified milled material, classified milled material, and classified remilled material, which constitutes single-layer boards with resin percentages of 11.9 %, 15.1 %, and 19.3 %. Results show that the use of finer particles increases the flexural strength (MOR) and the modulus of elasticity (MOE) by approximately 35 % compared to boards where larger particles are used. Swelling and water absorption decrease between 25 % and 70 % by using smaller particles. Boards made with smaller particles achieve better resin impregnation and simpler mixing processes, which result in better-cut quality and smoother surfaces. These results contribute to the identification of a final disposal with added value for abundant waste and an alternative raw material that can replace wood in the board manufacturing process.</em></p> 2024-02-19T00:00:00+00:00 Copyright (c) 2024 Luciano Gabriel Massons, Florencia Araceli Benitez, Regina Rosario Piccoli, Maria Fernanda Carrasco , Raul Esteban Puga, Carlos Defagot Monitoring reliability of man-machine system of machining area using the Weibull distribution 2024-01-20T00:51:21+00:00 Rosa María Amaya Toral Manuel Baro Tijerina Martha Patricia García-Martínez Cinthia Judith Valdiviezo Castillo <p><em>This publication presents the development of a method that seeks to monitor the parameters β (shape) and η (scale) for each component-subsystem combination following the Weibull distribution, necessary for the calculation of the reliability of the man-machine system in the machining area. This system defines the workshops of the metal-mechanic, with high-mix and low-volume batch production where conventional and Computerized Numerical Control (CNC) machines are involved, which share the manufacturing of parts that sometimes are unique, or their manufacturing period is short. The design of the man-machine system is based on the analysis of the failures of non-conforming parts in the machining area and on the failure rates, which the statistical model is developed for its evaluation, considering the 2-parameter Weibull distribution, and a redundant system with series-parallel configuration. The results obtained were based on the theoretical-practical, using mathematical and statistical models, as well as the Study Case. With the use of mathematical and statistical models, it is demonstrated that the probability of failure (risk) of the man-machine system is time-dependent and is generated by mechanical type stresses, which occur in the manufacture of parts.</em></p> 2023-12-31T00:00:00+00:00 Copyright (c) 2023 Rosa María Amaya Toral, Manuel Baro Tijerina, Martha Patricia García-Martínez, Cinthia Judith Valdiviezo Castillo