ANGINA INESTABLE. PROPUESTA DE PROTOCOLO DE TRATAMIENTO EN EL HOSPITAL

Unstable angina is an acute coronary syndrome without elevation of the ST segment. It is clinically important because of its threatening and crippling nature, due to the possibility that it could precede acute myocardial infarction. That is why it is determined that the patient suffering from this condition must be hospitalized in the Intensive Care Unit. There are various therapeutic strategies and several forms to approach the treatment of each patient, but in many cases it is necessary a percutaneous coronary intervention and this procedure is not carried out in this hospital. That is why it is necessary to establish a guideline for the treatment of this condition with the aim of optimizing the medications and making an adequate selection of the patients who require being transferred to a hospital with interventional cardiology services. A proposal for treatment protocol is presented in this work. It can function as a guideline for those who on daily basis treat patient with this condition at the Roberto Rodriguez Fernandez University Hospital in Morón city

Elastic tunneling charge transport mechanisms in silicon quantum dots / SiO2 thin films and superlattices

The role of different charge transport mechanisms in Si /SiO2 structures has been studied. A theoretical model based on the Transfer Hamiltonian Formalism has been developed to explain experimental current trends in terms of three different elastic tunneling processes: (1) trap assisted tunneling; (2) transport through an intermediate quantum dot; and (3) direct tunneling between leads. In general, at low fields carrier transport is dominated by the quantum dots whereas, for moderate and high fields, transport through deep traps inherent to the SiO 2 is the most relevant process. Besides, current trends in Si /SiO2 superlattice structure have been properly reproduced

Financial Literacy and Financial Fragility in Mexico

Alfabetización Financiera y Fragilidad Financiera en MéxicoEl objetivo de esta investigación es analizar la relación entre la fragilidad financiera de los mexicanos y las siguientes variables: alfabetización financiera, ahorro, tenencia de activos, shocks financieros, educación financiera e inclusión financiera. También se identifican las características socioeconómicas y demográficas asociadas a la fragilidad financiera. Se utiliza un modelo Probit dicotómico estimado con datos de la Encuesta Nacional de Inclusión Financiera, 2021. Los resultados muestran que la alfabetización financiera, el ahorro (formal e informal), la educación financiera y la tenencia de activos se relacionan negativamente con la probabilidad de ser financieramente frágil. Los altos ingresos y la tenencia de ahorros formales e informales son los predictores más robustos de fragilidad financiera, con un efecto marginal de -9.40%, -5.34% y -5.27%, respectivamente. La probabilidad de ser financieramente frágil está relacionada con bajos ingresos y bajo nivel educativo, así como haber experimentado sobreendeudamiento en el último año. Los hallazgos pueden ser de utilidad para el diseño de estrategias de educación financiera que brinden a la población capacitación y de esta forma protección contra la disminución de ingresos.The objective of this research is to analyze the relationship between Mexicans’ financial fragility and the following variables: financial literacy, savings, assets owning, financial shocks, financial education, and financial inclusion. Likewise, socioeconomic and demographic characteristics associated with financial fragility are identified. The dichotomous Probit model is used for the analysis, estimated with data from the 2021 National Survey of Financial Inclusion. The results show that financial literacy, savings (formal and informal), financial education and possession of assets are negatively related to the probability of being financially fragile. High income and holding formal and informal savings are the most robust predictors of financial fragility, with a marginal effect of -9.40%, -5.34% and -5.27%, respectively. The probability of being considered financially fragile is related to low income and a low educational level, plus having overspent in the last year. The findings can be useful for financial education strategies design, to provide the population financial training in resources administration and protection against income decrease

Science with Neutrino Telescopes in Spain

The authors gratefully acknowledge the funding support from the following Spanish programs: Ministerio de Ciencia, Innovacion, Investigacion y Universidades (MCIU): Programa Estatal de Generacion de Conocimiento (refs. PGC2018-096663-B-C41, -A-C42, -B-C43, -B-C44) (MCIU/FEDER); Generalitat Valenciana: Prometeo (PROMETEO/2020/019) and GenT (refs. CIDEGENT/2018/034, /2020/049, /2021/023); Junta de Andalucia (ref. A-FQM-053-UGR18).The primary scientific goal of neutrino telescopes is the detection and study of cosmic neutrino signals. However, the range of physics topics that these instruments can tackle is exceedingly wide and diverse. Neutrinos coming from outside the Earth, in association with othermessengers, can contribute to clarify the question of the mechanisms that power the astrophysical accelerators which are known to exist from the observation of high-energy cosmic and gamma rays. Cosmic neutrinos can also be used to bring relevant information about the nature of dark matter, to study the intrinsic properties of neutrinos and to look for physics beyond the Standard Model. Likewise, atmospheric neutrinos can be used to study an ample variety of particle physics issues, such as neutrino oscillation phenomena, the determination of the neutrino mass ordering, non-standard neutrino interactions, neutrino decays and a diversity of other physics topics. In this article, we review a selected number of these topics, chosen on the basis of their scientific relevance and the involvement in their study of the Spanish physics community working in the KM3NeT and ANTARES neutrino telescopes.Ministerio de Ciencia, Innovacion, Investigacion y Universidades (MCIU) PGC2018-096663-B-C41 A-C42 B-C43 B-C44MCIU/FEDERGeneralitat Valenciana PROMETEO/2020/019GenT CIDEGENT/2018/034 2020/049 2021/023Junta de Andalucia A-FQM-053-UGR1

Gestión de residuos en entornos de investigación sanitaria en Aragón. Plan de gestión de residuos del Centro de Investigación Biomédica de Aragón.

La degradación del medio ambiente y el calentamiento global son, desde la segunda mitad del siglo XX, cuestiones preocupantes para la sociedad. Esta preocupación se ha acentuado con los años debido a la creciente información sobre los agentes implicados en estos procesos, tales como la generación de residuos. Pero, además del problema de la masiva generación de residuos y sus efectos a largo plazo para el medio ambiente, nos encontramos con los residuos que son directamente un peligro a largo y corto plazo para la gente cercana a su generación y manipulación, los llamados residuos peligrosos. Frente a estos agentes de riesgo, las medidas adoptadas se han centrado en lo que se han llamado las tres “R”: reducción, reutilización y reciclaje.La mala gestión de los residuos peligrosos, además de los problemas comunes a todos los residuos como es la imagen del centro de trabajo, generan problemas relativos a la seguridad de los trabajadores, la sanidad pública y una contaminación que es en general superior a los residuos urbanos comunes. Unos de estos residuos son los generados en centros sanitarios, que en los últimos 50 años han ido generando en la sociedad una especial conciencia sobre su peligrosidad y se ha tenido que variar el modo en el que se gestionaban por la preocupación climática. Es importante crear un procedimiento para la buena gestión de residuos en estos centros en los que se producen, y después de crear el procedimiento, crear una conciencia en los distintos responsables de las fases de la gestión de la importancia de cumplirlo. <br /

Comparison between two-fluid model simulations and particle image analysis & velocimetry (PIV) results for a two-dimensional gas-solid fluidized bed

This work compares simulation and experimental results of the hydrodynamics of a two-dimensional, bubbling air-fluidized bed. The simulation in this study has been conducted using an Eulerian–Eulerian two-fluid approach based on two different and well-known closure models for the gas–particle interaction: the drag models due to Gidaspow and Syamlal & O'Brien. The experimental results have been obtained by means of Digital Image Analysis (DIA) and Particle Image Velocimetry (PIV) techniques applied on a real bubbling fluidized bed of 0.005 m thickness to ensure its two-dimensional behaviour. Several results have been obtained in this work from both simulation and experiments and mutually compared. Previous studies in literature devoted to the comparison between two-fluid models and experiments are usually focused on bubble behaviour (i.e. bubble velocity and diameter) and dense-phase distribution. However, the present work examines and compares not only the bubble hydrodynamics and dense-phase probability within the bed, but also the time-averaged vertical and horizontal component of the dense-phase velocity, the air throughflow and the instantaneous interaction between bubbles and dense-phase. Besides, quantitative comparison of the time-averaged dense-phase probability as well as the velocity profiles at various distances from the distributor has been undertaken in this study by means of the definition of a discrepancy factor, which accounts for the quadratic difference between simulation and experiments The resulting comparison shows and acceptable resemblance between simulation and experiments for dense-phase probability, and good agreement for bubble diameter and velocity in two-dimensional beds, which is in harmony with other previous studies. However, regarding the time-averaged velocity of the dense-phase, the present study clearly reveals that simulation and experiments only agree qualitatively in the two-dimensional bed tested, the vertical component of the simulated dense-phase velocity being nearly an order of magnitude larger than the one obtained from the PIV experiments. This discrepancy increases with the height above the distributor of the two-dimensional bed, and it is even larger for the horizontal component of the time-averaged dense-phase velocity. In other words, the results presented in this work indicate that the fine agreement commonly encountered between simulated and real beds on bubble hydrodynamics is not a sufficient condition to ensure that the dense-phase velocity obtained with two-fluid models is similar to that from experimental measurements on two-dimensional bedsThis work has been partially funded by the Spanish Government (ProjectDPI2009-10518) and the Autonomous Community of Madrid (ProjectS2009/ENE-1660). Their supports are greatly appreciatedPublicad

The Effect of Cranio-Cervical Position on Core Muscle Activation during the Prone Plank Exercise

This study aimed to investigate the influence of head position on the electromyographical activity of the core muscles during the prone plank exercise. Twenty healthy participants were enrolled in this study. Muscle activation was registered using surface electromyography in the rectus abdominis, external oblique, internal oblique, and the lumbar portion of erector spinae. Three plank conditions were randomly evaluated, varying the position of the cranio-cervical segment during the plank performance (neutral, flexion and extension). The activation of each individual examined muscle and the overall core muscle activity (Total Intensity), as well as the ratings of perceived exertion were analysed with statistical significance set at p 0.90). The rectus abdominis presented larger activation in flexion compared to the other variations (p 0.70). Flexion elicited a greater response for both sides of external oblique when compared to neutral and extension, and also for both sides of internal oblique compared to the other conditions (p 0.70). Both flexion and extension reported higher exertion rating values compared to neutral (p 0.90). Head position influenced the electromyographical activation of core musculature, showing highest values when performing the plank in a head flexion.This research was funded by Consellería de Educación, Investigación, Cultura y Deporte de la Generalitat Valenciana, and European Social Fund (European Union), Grant Project Number ACIF/2016/048

Solar multiple optimization of a DSG linear Fresnel power plant

Linear Fresnel power plants are currently one of the most promising concentrating solar power plants. However there are only a few commercial projects. These power plants have a lower efficiency than parabolic trough collector plants and are still expensive. To increase the efficiency of these plants, the utilization of water/steam in the receivers (direct steam generation, DSG) and thermal storage (TES) have been considered. As case study, a 50 MWe solar-only linear Fresnel power plant located in Seville, Spain is considered. The effects of the solar field size and the thermal storage size on the annual production of the plant are analyzed: Nine different solar field sizes and up to eight thermal storage sizes have been compared. An economic optimization is presented in order to determine which plant has lowest Levelized Cost of Electricity (LCOE). It has been found that for the power plants with no-storage the optimum solar multiple (SM) is 1.7, whereas for the cases with thermal storage, the optimum configuration is a larger solar field (SM = 2), with a thermal storage of 2 h