Advanced Ceramic Materials Sintered by Microwave Technology

Processing of ceramic materials has also a strong impact in the quality of the consolidated body, as it plays a key role in the resulting microstructure and, as a consequence, in its final properties. Advanced ceramic materials are commonly processed as powders and densified via a high-temperature process. Traditional processing techniques include hot isostatic pressing, mold casting, and sintering in conventional ovens. As ceramics require very high processing temperatures compared to metals and polymers, these processes tend to be very energy intensive and result in higher production costs to the manufacturers. Therefore, new technologies known as nonconventional sintering techniques, such as microwave technology, are being developed in order to reduce energy consumption, while maintaining or even improving the characteristics of the resulting ceramic material. This novel and innovative technology aims at helping industrial sectors lower their production costs and, at the same time, lessen their environmental impact. On the other hand, it is interesting and necessary to know and explore the basic principles of microwaves to advance in the development of materials that demand, every day more, the different industrial sectors. This chapter presents the most recent advances of two materials with a great industrial future: zirconia and lithium aluminosilicate

Estimación por intervalos

Presentación de estimación por intervalos y cálculo del tamaño muestral en poblaciones infinitasParcialmente financiado por el PIE13-02

Cuestionario de estimación por intervalos

Parcialmente financiado por el PIE13-02

Cuestionario de estimación puntual

Parcialmente financiado por el PIE13-02

Cuestionario de distribuciones en el muestreo

Parcialmente financiado por el PIE13-02

¿Es efectivo el aprendizaje sobre alfabetización en información para estudiantes de enfermería?

Objective: The structured development on informatics and long term information literacy skills are urgently required for undergraduate nurses. Therefore, the improvement in the skills of information literacy of nursing students and evaluation of the learning process were proposed. Methods: A teaching-learning process on information literacy was developed with 80 students, who had to submit a report for evaluation of the learning process. A quasi-experimental design was used with a group for the evaluation of acquired knowledge, to which a pretest and post-test was applied. Results: 82.5% of students passed the report. Almost all participants were satisfied with the learning process. In the self-assessment of knowledge acquired, the means obtained were significantly higher in the post-test, while the effect size was very high. Conclusions: There is evidence that the teaching-learning process to improve information literacy has been effective. The main contribution has been to incorporate information literacy into the students’ curriculum.Objetivo: Es urgente realizar programas dirigidos a las enfermeras de pregrado para desarrollar destrezas informáticas y sobre alfabetización de la información a largo plazo. Por ello se propuso mejorar las destrezas en alfabetización en información de los/as estudiantes de Enfermería y evaluar el proceso de aprendizaje. Metodología: Se ha desarrollado un proceso enseñanza-aprendizaje para la alfabetización informacional de 80 estudiantes, que debían presentar para la evaluación un informe del proceso de aprendizaje. Se ha utilizado un diseño cuasi experimental con un grupo para la evaluación de conocimientos adquiridos, al que se le aplicó un pretest y un postest. Resultados: El 82.5% de los/as estudiantes ha superado el informe. Casi todos los participantes se han mostrado satisfechos/as con el proceso de aprendizaje. En la autovaloración de los conocimientos adquiridos, las medias obtenidas fueron significativamente mayores en el postest, siendo el tamaño de efecto muy grande. Conclusiones: Existen evidencias de que el proceso enseñanza-aprendizaje para mejorar la alfabetización en información ha sido efectivo. La principal contribución ha sido incorporar la alfabetización de la información en el currículum de los/as estudiantes

Cyber-Physical System Architecture for Minimizing the Possibility of Producing Bad Products in a Manufacturing System

The new industry 4.0 requires the implementation of several cyber-physical systems to increase the level of productivity in a manufacturing system. This chapter proposes an architecture of a generic manufacturing system that requires the use of techniques of agile production, lean manufacturing, and statistical approaches. The combination of the previous techniques will be implemented in the architecture proposed for minimizing the possibility of producing bad products. Thus, the cyber-physical system architecture proposed will optimize the overall system thanks to the implementation of intelligent modules and control strategies. Moreover, 10 proposed actions will be described in detail. These actions can be implemented in cyber-physical systems that take into account five levels

Carcass analysis of four quails species in Mexico State

The human diet consists of a great diversity of foods in where the most common source of protein comes from animals; mainly from fattening species of pigs, beef, chickens, and sheep due to intensive farming high fat content. The current study was aimed to evaluate the meat analysis of four species of wild quail breasts: Common quail, Banded quail, scaled or Squamous quail and Montezuma quail. Quails were collected from March to June, in the State of Mexico. The findings showed that of the studied species, the meat of Moctezuma had the greatest amount of protein (26.99%DM); however, the lowest fat content (1.25%DM) was with Squamos. Up to the time of this investigation, no data existed on the nutritional qualities of meat coming from these wild species in the State of Mexico. As we now know, this meat has better attributes, compared even to rabbit meat and to the meat of other domestic species that are consumed on a daily basis. It was concluded that the carcasses protein and dry matter contents were similar with all studied species where fat content of the Callipepla squamata had the highest value

Estimación puntual

Presentación de las propiedades de los estimadoresParcialmente financiado por el PIE13-02

Distribuciones en el muestreo. Introducción a la inferencia estadística.

Presentación de los conceptos introductorios a la inferencia estadísticaParcialmente financiado por el PIE13-02