Desarollo de un prototipo de germinación automática para semillas de café

El objetivo general de la investigación es desarrollar el prototipo de una maquina CNC para aplicaciones de agricultura inteligente (inspirada en la iniciativa global farmbot.cc) que permita automatizar los procesos ligados a un germinador de semillas de café. Así las cosas, se hace necesario en tender que la agricultura es un medio de desarrollo y eje fundamental de la sociedad. Por lo que su perfeccionamiento e innovación es una preocupación general que está ligado a las ciencias actuales del control y la electrónica; poder mecanizar, automatizar y hacer más estable este medio de producción, es una idea que motiva a los ingenieros actuales; debido a su relación directa con el avance y desarrollo mundial. No ajenos a esta situación y de preferente conociendo que el café es un producto que marca la economía de muchos sectores del país, se da vía a una idea de investigación con la cual, se pretende mejorar la producción del café, utilizando un germinador automático de semillas, el cual se centra en brindar las mejores condiciones para procurar un inicio de vida favorable a las plantas, objeto que debe repercutir, en su futuro como productora. Como se ha denominado CSG-bot (Coffee Seed Germinador Robot), es un germinador automático de semillas de café. Una máquina basada en el control numérico programable con software en código abierto, que sigue el lineamiento de la comunidad Farmbot, en la automatización de la agricultura. Es una idea innovadora con componentes y electrónica de punta, para monitorear la germinación de las semillas; analizando variable como temperatura, humedad e incidencia de luz, se garantiza el pleno desarrollo de las plantas con las mejores condiciones y un análisis constante, donde se hace poco prescindible la intervención humana. De tal forma, que se tiene un sistema SCADA autónomo y flexible de monitoreo en tiempo real. Su funcionalidad va relacionada con la garantía de mejores condiciones para las semillas de café; por lo que beneficencia a los productores y aquellas personas que se dedican a la siembra y producción. Haciendo que la primera fase de cultivo sea menos manual y más maquinal, con el fin de que, en el inicio, las plantas cuenten con las mejores condiciones de desarrollo, de tal forma, que puedan continuar su evolución bajo condiciones más favorables. Siguiendo este orden de ideas cabe mencionar, que brinda la posibilidad de mejorar el proceso de germinación en comparación con las técnicas manuales-artesanales tradicionales, que requieren un largo y tedioso análisis, por parte de los campesinos productores, haciendo no solo que se mantenga el proceso bajo las mismas condiciones, sino mucho más autónomo y con posibilidad de aumentar la producción, de igual forma brinda un sistema de observación en variables como temperatura, humedad, e incidencia de luz, que le den una idea al usuario de cómo va la geminación y si las condiciones son las más óptimas para continuar. Por consiguiente, esta propuesta mantiene una iniciativa de vital importancia para aumentar y mejorará la agricultura y la siembra de café; sin perderse de mantener condiciones ambientales favorables, puesto que no altera la viabilidad y el ecosistema de las plantas. Además, repercute directamente en el campo económico y científico, ya que brinda una solución que no necesita de compra de instrumentos y software

Tuning the electronic and magnetic properties of 2D g-GaN by H adsorption: An ab-initio study

We have theoretically studied the structural, electronic and magnetic properties of the hydrogen adsorption on a honeycomb gallium-nitride two-dimensional monolayer (2D g-GaN). Results indicate that the band gap energy can be systematically tuned by the hydrogen coverage on the 2D g-GaN in the diluted limit. In addition, a total magnetic moment can be induced in the 2D g-GaN by hydrogen adsorption due to s-p interaction and band structure effects. Although hydrogen adsorption on top of nitrogen atoms shows the most stable energy in the 2D g-GaN, the most stable ferromagnetism -with a nonzero magnetic moment-is obtained when hydrogen is adsorbed on top of Ga atoms. These results indicate that H adatoms on the 2D g-GaN systems could be a potential candidate for future spintronic applications

Analysis of Variables for the Suitable Growth of a Latin American City in a Contemporary Context

Occupation in a city involves the process of continuous expansion. The fitness of a territory can be measured as a result of its physical, socioeconomic, and cultural variables. Hence, this is what lays the foundations for a comprehensive growth of human settlements. Also, it provides a setting that allows the social reproduction of its inhabitants beyond their basic needs. The way to predict its expression in the territory results to elements conceived through planning. This planning is conditional on the existing legal framework, and it is expressed during zoning which is exceeded in many cases. This research analyses the characteristics and practices of the planning process which is derived from various considerations in the international arena. It was conducted from a prospective approach to manage the territory with the aim of identifying variables that allows one to understand the dynamics of the physical expansion and growth of the cities. Also, it also opines success stories in order to define the basic components which are articulated in a harmonious and sustainable way

A systemic model of analysis of organizational culture in health care services

Introduction: The aim of this paper is to present the results of a case study carried out in the state of Hidalgo under a systemic model of analysis. This focused the organizational culture of health care services with the main purpose of studying these organizations and to understand their inner and outer dynamics. Method: A case study carried out under qualitative approach with the application of focus groups and interviews in communitarian health centers, physicians offices, sanatoriums and hospitals of the state of Hidalgo, Mexico. Results: The organizational culture in health care services was classified into 4 subsystems: human, technical-technological, functionalstructural and environmental macrosystem. Conclusion: An interrelation among the four subsystems was identified defining the dynamics of organizational culture of health care services in three transactions: interdynamics, intradynamics and outerdynamics

Antioxidant and Antimicrobial Capacity of Phenolic Compounds of Mango (Mangifera indica L.) Seed depending upon the Extraction Process

The extraction method is critical for the recovery of phenolic compounds. The main goal was to evaluate the effect of an extraction process from mango seed on their phenolic profile, antioxidant and antimicrobial capacities. Phenolic extraction was performed in different steps: maceration, alkaline hydrolysis, acid/alkaline hydrolysis, polar and non-polar fraction of an ethyl acetate separation.The macerated extract showed a higher variety of polyphenols from mango seed:gallic (138.36 µg/g dry weight), coumaric (65.36 µg/g), ferulic (1376.67 µg/g) , chlorogenic (57.75 µg/g) anddicaffeoylquinic (219.29 µg/g) acids, catechin (16.78 µg/g) and rutin (6678.62µg/g). In alkaline hydrolyzed extract most of these compounds were lost, ferulic acid decreased 1356.77 µg/g dw and gallic acid increased 1383.89 µg/g dw. Gallic and chlorogenic acids increased 165 and 969. 45 µg/g dw respectively in acid/alkaline hydrolyzed, 109.57 and 841.38 µg/g dw respectively in non-polar and 277.15 and 77.88 µg/g dw respectively in polar extracts related to the macerated extract. Rutin was found only in acid/hydrolyzed and non-polar extract in lesser amount (87.62 and 78.51 µg/g dw) compared to macerated extract. The content of phenolic compounds was higher for the macerated extract (phenols=484.42 mg GAE/g and flavonoids=86.59 mg QE/g) than for the other steps. Acid/alkaline hydrolysis increased the antioxidant activity (1787.67 μmol TE/g for DPPH and 3692.86 μmol TE/g for TEAC); while the alkaline hydrolysis increased the antimicrobial effectivity (MIC=2.5 mg/mL for bacteria and 0.5 mg/mL for yeast). Results indicate that the acid or alkaline hydrolysis yields a stronger antioxidant and antimicrobial extract

El huerto escolar de la Facultad de Educación - Centro de Formación del Profesorado: un espacio multidisciplinar para trabajar las competencias profesionales de futuros docentes

El huerto escolar sea el hilo conductor para formar a los estudiantes en las competencias profesionales propias del Grado, haciéndolo extensivo a las competencias básicas que debe alcanzar un escolar

Las ciencias sociales y sus abordajes en los estudios avanzados

Este libro tiene como uno de sus objetivos principales impulsar un ejercicio académico de tipo interdisciplinario entre investigadores y egresados del programa de Doctorado en Ciencias Sociales de la Universidad Autónoma del Estado México (UAEM). Si bien se trata de un esfuerzo incipiente porque los autores que escriben, presentan artículos de investigación en los que desarrollan temas de su campo disciplinar, se trata de un libro relevante porque inaugura una actividad editorial que involucraría a profesores y estudiantes de diferentes líneas de investigación y de distintas disciplinas y les daría la posibilidad de interactuar intelectualmente con el fin de consolidar un diálogo interdisciplinario, que seguramente hará posible desarrollar discusiones de tipo interdisciplinar sobre problemas concretos.Este libro tiene como uno de sus objetivos principales impulsar un ejercicio académico de tipo interdisciplinario entre investigadores y egresados del programa de Doctorado en Ciencias Sociales de la Universidad Autónoma del Estado México (uaem).1 Si bien se trata de un esfuerzo incipiente porque los autores que escriben, presentan artículos de investigación en los que desarrollan temas de su campo disciplinar, se trata de un libro relevante porque inaugura una actividad editorial que involucraría a profesores y estudiantes de diferentes líneas de investigación y de distintas disciplinas y les daría la posibilidad de interactuar intelectualmente con el fin de consolidar un diálogo interdisciplinario,UAE

Impact of hospital characteristics on implementation of a Pediatric Early Warning System in resource-limited cancer hospitals

BackgroundPediatric Early Warning Systems (PEWS) aid in identification of deterioration in hospitalized children with cancer but are underutilized in resource-limited settings. Proyecto EVAT is a multicenter quality improvement (QI) collaborative in Latin America to implement PEWS. This study investigates the relationship between hospital characteristics and time required for PEWS implementation.MethodsThis convergent mixed-methods study included 23 Proyecto EVAT childhood cancer centers; 5 hospitals representing quick and slow implementers were selected for qualitative analysis. Semi-structured interviews were conducted with 71 stakeholders involved in PEWS implementation. Interviews were recorded, transcribed and translated to English, then coded using a priori and novel codes. Thematic content analysis explored the impact of hospital characteristics and QI experience on time required for PEWS implementation and was supplemented by quantitative analysis exploring the relationship between hospital characteristics and implementation time.ResultsIn both quantitative and qualitative analysis, material and human resources to support PEWS significantly impacted time to implementation. Lack of resources produced various obstacles that extended time necessary for centers to achieve successful implementation. Hospital characteristics, such as funding structure and type, influenced PEWS implementation time by determining their resource-availability. Prior hospital or implementation leader experience with QI, however, helped facilitate implementation by assisting implementers predict and overcome resource-related challenges.ConclusionsHospital characteristics impact time required to implement PEWS in resource-limited childhood cancer centers; however, prior QI experience helps anticipate and adapt to resource challenges and more quickly implement PEWS. QI training should be a component of strategies to scale-up use of evidence-based interventions like PEWS in resource-limited settings

A global experiment on motivating social distancing during the COVID-19 pandemic

Finding communication strategies that effectively motivate social distancing continues to be a global public health priority during the COVID-19 pandemic. This cross-country, preregistered experiment (n = 25,718 from 89 countries) tested hypotheses concerning generalizable positive and negative outcomes of social distancing messages that promoted personal agency and reflective choices (i.e., an autonomy-supportive message) or were restrictive and shaming (i.e., a controlling message) compared with no message at all. Results partially supported experimental hypotheses in that the controlling message increased controlled motivation (a poorly internalized form of motivation relying on shame, guilt, and fear of social consequences) relative to no message. On the other hand, the autonomy-supportive message lowered feelings of defiance compared with the controlling message, but the controlling message did not differ from receiving no message at all. Unexpectedly, messages did not influence autonomous motivation (a highly internalized form of motivation relying on one’s core values) or behavioral intentions. Results supported hypothesized associations between people’s existing autonomous and controlled motivations and self-reported behavioral intentions to engage in social distancing. Controlled motivation was associated with more defiance and less long-term behavioral intention to engage in social distancing, whereas autonomous motivation was associated with less defiance and more short- and long-term intentions to social distance. Overall, this work highlights the potential harm of using shaming and pressuring language in public health communication, with implications for the current and future global health challenges