Use of the System S2o3 (2-) -O2 for the Leaching of Precious Metals Contained in a Mineral From Molango in the State of Hidalgo, Mexico

The newer tendencies of research, related with the leaching of precious metals, involves the use of non toxic reagents that allows the leaching of a mineral of sedimentary origin using the system S2 - O3 2- - O2. Prior to thisprocess, the mineral was characterized by Scanning Electron Microscopy (SEM) in conjunction with Energy Dispersive Spectrometry of X – rays (EDS), X- ray mapping. Finally, the chemical composition was executed by Inductively Coupled Plasma Spectrometry (ICP). According to the results obtained, it was possible to determine that the mineral studied has adequate contents of gold, palladium, silver, and platinum. And after the leaching process, it could be possible to leach the gold and palladium that it contains, getting recoveries of 90% and 85 %, respectively. In the case of silver, a redissolution or precipitation could occur during the first minutes of reaction

Criterios de diseño para un sistema de reutilización de aguas grises

The use of natural resources is essential in human life; however, their proper management and development have not been given significant importance until recent years, as we face the current problems of meeting our needs. Considering the difficulty of scarcity and poor management of the vital resource, water, urgent measures must be taken to mitigate the bad results, supported by the development of new techniques, methodologies, and technologies to obtain good practices, incentivizing the well-being of humanity towards future generations. The following article considers the importance of design criteria by the client for the development of a prototype design for the collection and reuse of graywater from washing systems in a social housing unit, as well as its correct immersion into the problem presented in the process by incorporating the use of steps and tools established in the design thinking methodology for the proper design development.El uso de recursos naturales es imprescindible en la vida de la humanidad, sin embargo, su correcta gestión y desarrollo no ha tenido una relevancia hasta los últimos años, haciendo frente a los recientes problemas para satisfacer las necesidades. Por lo que, teniendo en cuenta la dificultad de la escazes y la mala gestión que se realiza del recurso vital, el agua, se debe tomar medidas necesarias ya urgentes para mitigar los malos resultados, apoyado en el desarrollo de nuevas tecnicas, metodologìas y tecnologías para obtener buenas prácticas, incentivando el bien de la humanidad hacia generaciones futuras. El siguiente artículo considera la importancia que tiene los criterios de diseño por parte del cliente para el desarrollo del diseño de un prototipo para la recolección y reutilizacion de aguas grises provenientes de los sistemas de lavado en una casa de interes social, así como su correcta inmersión a la problemática que se presenta en el proceso ya realizado inconroporando el uso de los pasos y herramientas establecidos en la metodologia design thinking para el correcto desarrollo de diseño

EDUCACIÓN AMBIENTAL Y SOCIEDAD. SABERES LOCALES PARA EL DESARROLLO Y LA SUSTENTABILIDAD

Este texto contribuye al análisis científico de varias áreas del conocimiento como la filosofía social, la patología, la educación para el cuidado del medio ambiente y la sustentabilidad que inciden en diversas unidades de aprendizaje de la Licenciatura en Educación para la Salud y de la Maestría en Sociología de la SaludLas comunidades indígenas de la sierra norte de Oaxaca México, habitan un territorio extenso de biodiversidad. Sin que sea una área protegida y sustentable, la propia naturaleza de la región ofrece a sus visitantes la riqueza de la vegetación caracterizada por sus especies endémicas que componen un paisaje de suma belleza

XVI International Congress of Control Electronics and Telecommunications: "Techno-scientific considerations for a post-pandemic world intensive in knowledge, innovation and sustainable local development"

Este título, sugestivo por los impactos durante la situación de la Covid 19 en el mundo, y que en Colombia lastimosamente han sido muy críticos, permiten asumir la obligada superación de tensiones sociales, políticas, y económicas; pero sobre todo científicas y tecnológicas. Inicialmente, esto supone la existencia de una capacidad de la sociedad colombiana por recuperar su estado inicial después de que haya cesado la perturbación a la que fue sometida por la catastrófica pandemia, y superar ese anterior estado de cosas ya que se encontraban -y aún se encuentran- muchos problemas locales mal resueltos, medianamente resueltos, y muchos sin resolver: es decir, habrá que rediseñar y fortalecer una probada resiliencia social existente - producto del prolongado conflicto social colombiano superado parcialmente por un proceso de paz exitoso - desde la tecnociencia local; como lo indicaba Markus Brunnermeier - economista alemán y catedrático de economía de la Universidad de Princeton- en su libro The Resilient Society…La cuestión no es preveerlo todo sino poder reaccionar…aprender a recuperarse rápido.This title, suggestive of the impacts during the Covid 19 situation in the world, and which have unfortunately been very critical in Colombia, allows us to assume the obligatory overcoming of social, political, and economic tensions; but above all scientific and technological. Initially, this supposes the existence of a capacity of Colombian society to recover its initial state after the disturbance to which it was subjected by the catastrophic pandemic has ceased, and to overcome that previous state of affairs since it was found -and still is find - many local problems poorly resolved, moderately resolved, and many unresolved: that is, an existing social resilience test will have to be redesigned and strengthened - product of the prolonged Colombian social conflict partially overcome by a successful peace process - from local technoscience; As Markus Brunnermeier - German economist and professor of economics at Princeton University - indicates in his book The Resilient Society...The question is not to foresee everything but to be able to react...learn to recover quickly.Bogot

Diseño del plan de ejecución BIM para la construcción del sitio de presa y casa de máquinas en el Embalse Río Piedras - proyecto de abastecimiento de agua para la cuenca media del Río Tempisque y comunidades costeras (PAACUME)

Proyecto de Graduación (Licenciatura en Ingeniería en Construcción) Instituto Tecnológico de Costa Rica, Escuela de Ingeniería en Construcción, 2021El Proyecto de Abastecimiento de Agua para la Cuenca Media del Río Tempisque y Comunidades Costeras (PAACUME), tiene por objeto proveer agua para distintos usos. Esto implica la construcción de obras de infraestructura de gran complejidad, por lo que la dirección técnica de PAACUME requiere asesoría con respecto a la fase constructiva de esas obras. En el marco planteado, el presente proyecto pretende brindar las herramientas necesarias de planificación, programación, organización y control de obra de la casa de máquinas y el sitio de la presa. Para ello se establecieron 4 ejes de trabajo: análisis de la información, creación de modelos, diseño de la estructura de trabajo y creación de la propuesta de control de obra. Se desarrollaron 2 herramientas, una en Revit y otra en Navisworks. Producto de la aplicación de estas herramientas y de la estructura del trabajo, se estimaron los materiales y la mano de obra necesaria; se crearon simulaciones y se determinó una duración de la labor para casa de máquinas de 83 días y para el sitio de presa de 2 años (735 días). Por último, se desarrollaron estrategias de control vinculadas con los modelos ejecutados. Dentro de las conclusiones del trabajo, sobresale la factibilidad de la metodología BIM para la planificación de obras de infraestructura hidráulica, debido a la complejidad derivada de su implementación, dada la inversión de recursos en aspectos como la introducción de herramientas, las capacitaciones y los procesos de adaptación, entre otros.The Project of Water Supply for the Middle Basin of Tempisque River and Coastal Communities (PAACUME) as known in Spanish, aims to provide water for various uses. This requires the construction of highly complex structures, which is why the (PAACUME) technical direction requires consultancy regarding the construction phase of these structures. Within the framework proposed, this project intends to provide the necessary tools for planning, programming, organization, and work control for particularly the powerhouse and the dam site. For these 4 work axes were defined: Information analysis, model creation, work structure design, and the creation of the work control proposal. Two tools were developed, one in Revit and another one in Navisworks. As a product of the implementation of these tools and the work structure, materials were estimated, manpower was estimated, simulations were created, and the duration of the powerhouse was determined to be 83 days and for the dam site 2 years (735 days). Finally, control strategies linked with the executed models were developed. Within the conclusions of this work, the most outstanding are the feasibility of BIM for the management and design of hydraulic infrastructure works, and in the same fashion, the complexity derived from its implementation. This given the investment in resources of areas such as the introduction of the tools, training, adaptation processes, among others

Integration of Sentiment Analysis of Social Media in the Strategic Planning Process to Generate the Balanced Scorecard

Strategic planning (SP) requires attention and constant updating and is a crucial process for guaranteeing the efficient performance of companies. This article proposes a novel approach applied in a case study whereby a balanced scorecard (BSC) was generated that integrated sentiment analysis (SA) of social media (SM) and took advantage of the valuable knowledge of these sources. In this study, opinions were consolidated in the main dataset to incorporate sentiments regarding the strategic part of a restaurant in a tourist city. The proposed methodology began with the selection of the company. Information was then acquired to apply pre-processing, processing, evaluation, and validation that is capitalized in a BSC to support strategic decision-making. Python support was used in the model and comprised lexicon and machine learning approaches for the SA. The significant knowledge in the comments was automatically oriented toward the key performance indicators (KPIs) and perspectives of a BSC that were previously determined by a group of opinion leaders of the company. The methods, techniques, and algorithms of SA and SP showed that unstructured textual information can be processed and capitalized efficiently for optimal management and decision-making. The results revealed an improvement (reduced effort and time) to produce a more robust and comprehensive BSC with the support and validation of experts. Moreover, new resources and approaches were developed to implement more efficient SP. The model was based on the efficient coupling of both fields of study

Integration of Sentiment Analysis of Social Media in the Strategic Planning Process to Generate the Balanced Scorecard

Strategic planning (SP) requires attention and constant updating and is a crucial process for guaranteeing the efficient performance of companies. This article proposes a novel approach applied in a case study whereby a balanced scorecard (BSC) was generated that integrated sentiment analysis (SA) of social media (SM) and took advantage of the valuable knowledge of these sources. In this study, opinions were consolidated in the main dataset to incorporate sentiments regarding the strategic part of a restaurant in a tourist city. The proposed methodology began with the selection of the company. Information was then acquired to apply pre-processing, processing, evaluation, and validation that is capitalized in a BSC to support strategic decision-making. Python support was used in the model and comprised lexicon and machine learning approaches for the SA. The significant knowledge in the comments was automatically oriented toward the key performance indicators (KPIs) and perspectives of a BSC that were previously determined by a group of opinion leaders of the company. The methods, techniques, and algorithms of SA and SP showed that unstructured textual information can be processed and capitalized efficiently for optimal management and decision-making. The results revealed an improvement (reduced effort and time) to produce a more robust and comprehensive BSC with the support and validation of experts. Moreover, new resources and approaches were developed to implement more efficient SP. The model was based on the efficient coupling of both fields of study

A service design process based on the business model CANVAS and the C-K theory

Services are fundamental to any economy. They are responsible for most of the employment and collaborate with a substantial proportion of the Gross Domestic Product. Despite its importance, the tools and methodologies for service design in Latin America have a slow evolution. One of the reasons that explain this phenomenon is the lack of practical tools and methods to take into account the complexity of the service and the intrinsic dynamism of the design process. Another limitation of the adoption of new service design tools is a nontechnical view of the design process, situation that puts the common sense as the first resource for service design. Hence, the lack of a service design methodology avoids the learning process, the reproducibility of successful service models in a different context, and the assimilation of new design techniques. Consequently, this chapter proposes a framework to guide the conceptual design or redesign of services through the combination of the Business Model CANVAS with the C-K theory. The Business Model CANVAS is a graphical tool to represent, as simple as possible, the interaction of different elements to capture and deliver value to the market. On the other hand, the C-K theory proposes a graphical tool where Concepts (C) and Knowledge (K) interact dynamically to shape a process, without increasing complexity. The integration offers a design framework useful to deal with the challenging context of service development. A case study illustrates this practical approach

Impact of uterine manipulator on oncological outcome in endometrial cancer surgery.

There are limited data available to indicate whether oncological outcomes might be influenced by the uterine manipulator, which is used at the time of hysterectomy for minimally invasive surgery in patients with endometrial cancer. The current evidence derives from retrospective studies with limited sample sizes. Without substantial evidence to support its use, surgeons are required to make decisions about its use based only on their personal choice and surgical experience. To evaluate the use of the uterine manipulator on oncological outcomes after minimally invasive surgery, for apparent early-stage endometrial cancer. We performed a retrospective multicentric study to assess the oncological safety of uterine manipulator use in patients with apparent early-stage endometrial cancer, treated with minimally invasive surgery. The type of manipulator, surgical staging, histology, lymphovascular space invasion, International Federation of Gynecology and Obstetrics stage, adjuvant treatment, recurrence, and pattern of recurrence were evaluated. The primary objective was to determine the relapse rate. The secondary objective was to determine recurrence-free survival, overall survival, and the pattern of recurrence. A total of 2661 women from 15 centers were included; 1756 patients underwent hysterectomy with a uterine manipulator and 905 without it. Both groups were balanced with respect to histology, tumor grade, myometrial invasion, International Federation of Gynecology and Obstetrics stage, and adjuvant therapy. The rate of recurrence was 11.69% in the uterine manipulator group and 7.4% in the no-manipulator group (P In this study, the use of a uterine manipulator was associated with a worse oncological outcome in patients with uterus-confined endometrial cancer (International Federation of Gynecology and Obstetrics I-II) who underwent minimally invasive surgery. Prospective trials are essential to confirm these results

Vivero Centroamericano de adaptación y rendimiento: VICAR 1983-1984

Centro Internacional de Agricultura Tropical (CIAT)UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Agroalimentarias::Estación Experimental Agrícola Fabio Baudrit Moreno (EEAFBM