Application of the Rietveld Method to Quantify Mineral Phases in a Kaolin Mineral

The applications of the mineral kaolin are varied, such as the ceramic industry, and the pharmaceutical industry, among others; although it is generally found in mining deposits accompanied by other mineral species considered contaminants. The above makes it necessary to apply qualitative and quantitative analysis techniques that determine the purity of the mineral, from its extraction, during its mechanical processing and kaolin recovery. In this work, a procedure for quantification of the majority species in the Kaolin mineral is proposed, according to the procedure proposed by Rietveld, from the diffractogram obtained by the x-ray diffraction technique, as well as the knowledge of the crystallographic characteristics of the mineral constituents. Three models are proposed based on the structural parameters of the phases present in the system: tridymite, cristobalite, and kaolinite. The experimental results show the total adjustment of the diffraction pattern in which it is observed that the weight percentage corresponds to 40.0% for tridymite, 39.5% for cristobalite, and 20.5% for kaolinite. These results were corroborated by specific semi-quantitative chemical analyses using scanning electron microscopy.&nbsp

Knowledge Networks around the Strategic Alliances of Micro Coffee Producers

The organizational process that goes from the knowledge networks to the strategic alliances supposes a management, production and transfer of information that the literature differentiates according to the degree of empathy, commitment, entrepreneurship, innovation and satisfaction of leaders and followers. In this sense, the objective of this study was to study the phenomenon in coffee growers in central Mexico. From a structural model ⌠X 2 = 321.23 (34gl) p = 0.009; GFI = 0.990; CFI = 0.975; RMSEA = 0.008⌡, after establishing the reliability and validity of an instrument, it was found that innovation determines satisfaction (0.51), although the type of study, sample selection and analysis limit the findings to the specific context of the investigation. Lines concerning the extension of work to different contexts and samples are noticed

Situational-Context for Virtually Modeling the Elderly

The generalized aging of the population is incrementing the pressure over, frequently overextended, healthcare systems. This situations is even worse in underdeveloped, sparsely populated regions like Extremadura in Spain or Alentejo in Portugal. In this paper we propose an initial approach to use the Situational-Context, a technique to seamlessly adapt Internet of Things systems to the needs and preferences of their users, for virtually modeling the elderly. These models could be used to enhance the elderly experience when using those kind of systems without raising the need for technical skills. The proposed virtual models will also be the basis for further eldercare innovations in sparsely populated regions

BENEFICIOS DE LA LECHE Y LACTANCIA MATERNA COMO FACTOR IMPORTANTE DEL CRECIMIENTO Y DESARROLLO DEL NIÑO Y SU RELACION CON EL ORGANO DE LA BOCA

La lactancia forma parte integrante del proceso reproductivo y es la forma ideal y natural de alimentar al lactante. Constituye una base biológica y psicológica única para el desarrollo del niño. Este hecho, junto a otros importantes efectos en la prevención de las infecciones, en la salud y el bienestar de la madre, en el espaciamiento de los embarazos, en la salud de la familia, en la economía de la familia, el país y en la producción de alimentos, hace de la lactancia natural un elemento clave de autosuficiencia, de la atención primaria de la salud y de los actuales criterios de desarrollo.La lactancia forma parte integrante del proceso reproductivo y es la forma ideal y natural de alimentar al lactante. Constituye una base biológica y psicológica única para el desarrollo del niño. Este hecho, junto a otros importantes efectos en la prevención de las infecciones, en la salud y el bienestar de la madre, en el espaciamiento de los embarazos, en la salud de la familia, en la economía de la familia, el país y en la producción de alimentos, hace de la lactancia natural un elemento clave de autosuficiencia, de la atención primaria de la salud y de los actuales criterios de desarrollo

Contrast of a Quality Control Model for Sustainability in a Mexican Organization in Central Mexico

Often, the total quality has been instrumented before being weighted. The strategies even precede a diagnosis in Mexican organizations, but in an opposite sense, the present work set out to establish the reliability and validity of an instrument to measure the perception of total quality based on three indicators related to management. , production and transfer of knowledge. A nonperimental study was carried out with a non-probabilistic selection of 124 administrative staff and employees from an organization in central Mexico. From a structural model ⌠X2 = 123,24 (23df) p = 0,010; GFI = 0,990; CFI =,991; IFI = 0,993; RMSEA = 0,007⌡, it was found that management affects production (0,38) and this about the total perceived quality (0,35), although there are lines of research concerning empathy, commitment, entrepreneurship, satisfaction and happiness in relation to the implementation of continuous improvements to the quality of processes and products

Una Experiencia de iniciación al paralelismo en segundo curso del Grado de Ingeniería Informática

En este artículo se analiza una experiencia de introducción del paralelismo de forma temprana en el Grado de Ingeniería Informática. En la experiencia participan cuatro asignaturas de segundo curso, impartidas por tres departamentos distintos y con la colaboración de un centro de computación. En este curso se realiza la primera aproximación de los alumnos al paralelismo, y se pretende realizar un acercamiento coordinado y práctico a diferentes materias.SUMMARY -- This work presents an experience of early introduction to parallelism in the Degree on Computing Engineering. Four courses of the second year participate in the experience and also a computing centre. The courses are tought by three departments. In the second year the students are introduced to parallelism for the first time, and with our experience we intend to approach different topics of parallelism in a coordinated and practical way.Peer Reviewe

Mercadotecnia en los deportes

Este trabajo consistió en desarrollar un plan de negocio y de mercadotecnia para la creación de una plataforma múltiple de vinculación a nivel digital en la que se podrá compartir y consultar información relevante de deportes

Bioethical Concerns During the COVID-19 Pandemic: What Did Healthcare Ethics Committees and Institutions State in Spain?.

Objectives: Each new wave of the COVID-19 pandemic invites the possible obligation to prioritize individuals’ access to vital resources, and thereby leads to unresolved and important bioethical concerns. Governments have to make decisions to protect access to the health system with equity. The prioritization criteria during a pandemic are both a clinical and legal-administrative decision with ethical repercussion.We aim to analyse the prioritization protocols used in Spain during the pandemic which, in many cases, have not been updated. Method: We carried out a narrative review of 27 protocols of prioritization proposed by healthcare ethics committees, scientific societies and institutions in Spain for this study. The review evaluated shared aspects and unique differences and proffered a bioethical reflection. Results: The research questions explored patient prioritization, the criteria applied and the relative weight assigned to each criterion. There was a need to use several indicators, being morbidity and mortality scales the most commonly used, followed by facets pertaining to disease severity and functional status. Although age was initially considered in some protocols, it cannot be the sole criterion used when assigning care resources. Conclusions: In COVID-19 pandemic there is a need for a unified set of criteria that guarantees equity and transparency in decision-making processes. Establishing treatment indications is not the aim of such criteria, but instead prioritizing access to care resources. In protocols of prioritization, the principle of efficiency must vary according to the principle of equity and the criteria used to guarantee such equity.post-print204 K

Uso de compuestos nutracéuticos en nuevas formulaciones de piensos acuícolas

Trabajo presentado en las X Jornadas de Acuicultura en el Litoral Suratlántico: Nuevos retos y perspectivas para la sostenibilidad de la acuicultura, celebrado entre el 22 y 23 de noviembre de 2023 en Huelva.[EN] Different strategies have been followed to improve the aquaculture of main European farmed fish, such as genetic selection, refinements in culture conditions or enhanced feed formulation and management. However, more knowledge is required to exploit fish phenotypic plasticity to obtain those that better match aquaculture or market conditions. The overall objective of this mini-review is to identify the latest productive traits recently performed, mainly in commercial carnivorous species, and underlying biological processes that would be susceptible to improve the competitivity of aquaculture sector through nutritional issues. Thus, this work is framed within the concepts of Circular Economy and Blue Growth, where it is intended to point out the use of natural compounds extracted from seaweeds, microalgae and by-products of the industry for their inclusion in aquafeeds, allowing a more efficient use of more sustainable vegetable protein sources, and also to evaluate if these nutraceutical compounds counteract detrimental effects observed by nutritional interventions or environmentally challenged.[ES] La producción acuícola ha seguido diferentes estrategias para su optimización a lo largo de las últimas décadas, como el desarrollo de la selección genética, la mejora de las condiciones de cultivo, o el avance en la formulación y gestión de los piensos. Sin embargo, se requiere más conocimiento para explotar la plasticidad fenotípica de los peces para obtener aquellos que se ajusten mejor a las condiciones de la acuicultura o del mercado. El objetivo general de esta mini-revisión es identificar los últimos avances realizados recientemente, principalmente en especies carnívoras comerciales, y los procesos biológicos subyacentes que serían susceptibles de mejorar la competitividad del sector acuícola a través de intervenciones nutricionales. Así, este trabajo se enmarca dentro de los conceptos de Economía Circular y Crecimiento Azul, donde se pretende señalar el uso de compuestos naturales extraídos de algas, microalgas y subproductos de la industria para su inclusión en alimentos acuícolas, permitiendo un uso más eficiente de fuentes de proteínas vegetales más sostenibles, y también evaluar si estos compuestos nutracéuticos son capaces de contrarrestar los efectos perjudiciales observados por las formulaciones inadecuadas o desafiados por factores ambientales estresantes.This work was supported by the Projects “FEDER-UCA18-107182”, “FisioBream-II Call for Young Researchers CEI⋅MAR 2019”, “ALGAE4FISH-CEI·MAR Empresa 2018”, “VALINVA-CEI·MAR Empresa 2019”, “SeriBlue-CEI·MAR Empresa 2020”, and co-financed by the spin-off LifeBioencapsulation S.L. (Almería) and Biotechnology Biopolym S.A. (Granada)

Short- and Long-Term Prognosis of Patients With Takotsubo Syndrome Based on Different Triggers: Importance of the Physical Nature

Background Takotsubo syndrome (TTS) is an acute reversible heart condition initially believed to represent a benign pathology attributable to its self-limiting clinical course; however, little is known about its prognosis based on different triggers. This study compared short- and long-term outcomes between TTS based on different triggers, focusing on various physical triggering events. Methods and Results We analyzed patients with a definitive TTS diagnosis recruited for the Spanish National Registry on TTS (RETAKO [Registry on Takotsubo Syndrome]). Short- and long-term outcomes were compared between different groups according to triggering factors. A total of 939 patients were included. An emotional trigger was detected in 340 patients (36.2%), a physical trigger in 293 patients (31.2%), and none could be identified in 306 patients (32.6%). The main physical triggers observed were infections (30.7%), followed by surgical procedures (22.5%), physical activities (18.4%), episodes of severe hypoxia (18.4%), and neurological events (9.9%). TTS triggered by physical factors showed higher mortality in the short and long term, and within this group, patients whose physical trigger was hypoxia were those who had a worse prognosis, in addition to being triggered by physical factors, including age >70 years, diabetes mellitus, left ventricular eyection fraction <30% and shock on admission, and increased long-term mortality risk. Conclusions TTS triggered by physical factors could present a worse prognosis in terms of mortality. Under the TTS label, there could be as yet undiscovered very different clinical profiles, whose differentiation could lead to individual better management, and therefore the perception of TTS as having a benign prognosis should be generally ruled out