Exposure to hazardous concentrations of volatile organic compounds indoors in small workshops could affect the health of workers, resulting in respirative diseases, severe intoxication or even cancer. Controlling the concentration of volatile organic compounds is required to prevent harmful conditions for workers in indoor environments. In this document, PI and fuzzy PI controllers were used to reduce hazardous indoor air benzene concentrations in small workplaces. The workshop is represented by means of a well-mixed room model. From the knowledge obtained from the model, PI and fuzzy PI controllers were designed and their performances were compared. Both controllers were able to maintain the benzene concentration within secure levels for the workers. The fuzzy PI controller performed more efficiently than the PI controller. Both approaches could be expanded to control multiple extractor fans in order to reduce the air pollution in a shorter time. The results from the comparative analysis showed that implementing a fuzzy logic PI controller is promising for assuring indoor air quality in this kind of hazardous work environment.

The purpose of this article is to contribute to the understanding of the effects generated by the technology and knowledge transfer processes in the agro-food sector, within the context of Mexico, a developing country where the economic sector is one of the most lagging in terms of technological development. To achieve this objective, academic-industry relations, key elements, results, and benefits will be examined in 87 identified cases. The analysis begins by describing the context of agriculture and the food industry in Mexico. Then, 14 cases are presented. Results show that companies implement new processes and methods or launch new products to the market, but also implement a new culture of innovation, by establishing laboratories and undertaking research areas of the firm, creating R&D programs which formalize and continue with the academy-industry alliances. The elements that were not found with the expected frequency, according to international scientific publications, was the participation of an available intellectual property.

The carbon nanowalls (CNWs) grown by Plasma-Enhanced CVD reveal differences in the magnetotransport properties depending on the synthesis parameters. In this paper, we report the influence of the deposition temperature, which produces variations of the disorder microstructure of the CNWs. Relative low disorder leads to the weak localization with the transition to weak antilocalization. Higher disorder generates positive Hopping mechanism in low field with a crossover to a diffusion transport by graphene nanocrystallites. The samples reveal a similitude of the isoline density of the MR at a low temperature (<50 K), explained in the context of the magnetization. This effect is independent of the number of defects. We can achieve a desirable amount of control over the MT properties changing the CNWs’ microstructure.

The objective of this research is to develop a methodology that allows the construction of a standard of knowledge management and technological innovation applicable to the field of the universities in Mexico, the use of which results in better use of their resources and the improvement of their productivity. The analysis is carried out based on the systematic integration of the knowledge management and innovation models published in recent years, as well as the results of the experiences that propose standards for knowledge management and innovation. The results found are that knowledge management favors and facilitates innovation in organizations and allows them to offer better products and services. These findings are with the application of a methodology and an instrument to measure the maturity of the organizational structure. The application of the evaluation instrument was applied in a single organization. However, it can be considered a case study that empirically contributes to the state of the art of knowledge management. Organizations need to become aware of the high value of the knowledge and experience in various fields of the people who participate in them. It has been observed that the participation of experts facilitates the achievement of organizational objectives and favors knowledge management and innovation. This study provided information and experiences of an administrative nature to a higher education institution, which allowed an improvement in strategic decision-making, the promotion of technological developments, and the improvement of internal processes that lead to greater effectiveness of the academic and research processes.