33 research outputs found

    Desarrollo y puesta a punto de un banco de ensayos para órtesis de pie-tobillo

    Get PDF
    Las órtesis dinámicas de pie-tobillo (DAFO) son soluciones ortopédicas para facilitar el movimiento del tobillo en personas que sufren alguna condición fisiológica que afecta a la capacidad de caminar. La fabricación de estas órtesis está en los últimos años transformándose de los métodos tradicionales al uso de nuevas tecnologías de impresión 3D. La rigidez y características mecánicas del DAFO varían de un diseño a otro, y son críticas para la efectividad de la órtesis en el paciente. Aunque varias publicaciones de grupos investigadores han intentado establecer modelos de determinación de estas características mecánicas, aún no existe un protocolo específico para medir estas propiedades. En este proyecto se continúa una línea de trabajo anterior para desarrollar un banco de ensayos con el que determinar el comportamiento dinámico de DAFOs fabricados mediante impresión 3D, realizando un rediseño, puesta a punto, toma de ensayos y análisis de los resultados obtenidos.Dynamic ankle-foot orthoses (DAFO) are orthopedic solutions to facilitate ankle motion in people suffering from physiological conditions that affect gait. The manufacture of these orthoses is in recent years shifting from traditional methods to the use of new 3D printing technologies. The stiffness and mechanical characteristics of the DAFO vary from design to design, and are critical to the effectiveness of the orthosis on the patient. Although several publications by research groups have attempted to establish models for determining these mechanical characteristics, there is still no specific protocol for measuring these properties. This project continues a previous line of work to develop a test bench to determine the dynamic behavior of DAFOs manufactured by 3D printing, performing a redesign, tuning, testing and analysis of the results obtained.Departamento de Ciencias de los Materiales e Ingeniería Metalúrgica, Expresión Gráfica en la Ingeniería, Ingeniería Cartográfica, Geodesia y Fotogrametría, Ingeniería Mecánica e Ingeniería de los Procesos de FabricaciónMáster en Ingeniería Industria

    Effects of Prehabilitation on Functional Capacity in Aged Patients Undergoing Cardiothoracic Surgeries: A Systematic Review

    Get PDF
    Background: an increasing number of advanced age patients are considered for cardiothoracic surgeries. Prehabilitation optimizes the patients’ functional capacity and physiological reserve. However, the effectiveness of prehabilitation on physical functioning and postoperative recovery in the scope of cardiothoracic surgery is still uncertain. Objective: to assess the effectiveness of prehabilitation on pre- and/or postoperative functional capacity and physiological reserve in aged patients that are considered for cardiothoracic surgeries. Methods: this systematic review was registered in PROSPERO (CRD42021247117). The searches were conducted in PubMed, Web of Science, Scopus, and Cochrane CENTRAL until 18 April 2021. Randomized clinical trials that compared different prehabilitation strategies with usual care on the pre- and-postoperative results in aged patients undergoing cardiothoracic surgeries were included. Methodological quality was assessed by means of the Jadad scale, and the effectiveness of the interventions according to the Consensus on Therapeutic Exercise Training. Results: nine studies with 876 participants aged from 64 to 71.5 years old were included. Risk of bias was moderate due to the absence of double-blinding. The content of the interventions (multimodal prehabilitation n = 3; based on physical exercises n = 6) and the result measures presented wide variation, which hindered comparison across the studies. In general, the trials with better therapeutic quality (n = 6) reported more significant improvements in physical functioning, cardiorespiratory capacity, and in the postoperative results in the participants under-going prehabilitation. Conclusions: prehabilitation seems to improve functional capacity and postoperative recovery in aged patients undergoing cardiothoracic surgeries. However, due to the significant heterogeneity and questionable quality of the trials, both the effectiveness of prehabilitation and the optimum content are still to be determine

    Growth response to thinning in a mixed pine-oak stand of Pinus pinaster and Quercus pyrenaica.

    Get PDF
    During the last decades the interest on mixed stands has increased in forestry due to their potential benefits, especially conifer-broadleaves mixtures. However, more knowledge is need about their dynamic and their response to silvicultural treatments. On the other hand, climate change can affect different species in different ways, so it is important to study the effect of climate in mixed stands with different silvicultures. In this work we present preliminary results of a thinning trial in a mixed stands of Pinus pinaster Ait. and Quercus pyrenaica Willd located in ?Montes de Toledo? (Central Spain). The main objectives of the experiment are to study the growth response of each species to thinning and to analyse if there are different climate-growth relationships between species and thinning treatments. The stand is a stratified mixture with a planted pine overstory and a natural regenerated oak lower stratum (understory). The experiment design is a Latin square of order three with the following treatments: heavy thinning from below (40% of basal area is removed), moderate thinning from below (25% of basal area is removed) and control or unthinned. The thinning was applied during the winter 2009-10. The position of all trees larger than 7.5 cm of diameter per plot was recorded. Diameter of all trees and heights of a sample were measured before the thinning. In each plot dendrometer bands were installed in 10 trees per species in order to study the effect of treatments on individual tree growth. Dedrometer bands were read every month to detect possible differences in growth pattern between treatments. These data were complemented with continued records registered with electronic dendrometer installed in one tree per species and treatment. Climatic variables and soil temperature and humidity were recorded with a weather station and soil sensors set up in the study site. Data from the first growing season after the thinning treatment (spring of 2010) will be presented in this work. The possible differences in total growth and in growth pattern between species and treatments will be analysed and discussed

    Mediación y sustracción internacional de menores: buenas prácticas

    Get PDF
    Grado en Derecho. Derecho Internacional Privado Grupo II, 2020-201[ES]La sustracción internacional de menores tiene su origen en el seno de los conflictos familiares que como siempre plantean numerosas complejidades para ser solucionados, y con más intensidad cuando esos conflictos ocurren entre parejas que en el momento de la ruptura tienen descendientes menores de edad. La globalización ha contribuido al incremento de parejas mixtas, en el que cada sujeto en ocasiones tiene un origen diferente, algo que complica la situación de sus hijos cuando se producen separaciones o divorcios matrimoniales. Principalmente por ese elemento sentimental, que no se aprecia en otros sectores del Derecho, es importante una especial fijación y sensibilidad por el legislador para que se vele siempre por el interés y el bienestar del menor que en algunas ocasiones es el que sale más perjudicado de las situaciones descritas

    Can the Cytokine Profile According to ABO Blood Groups Be Related to Worse Outcome in COVID-19 Patients? Yes, They Can

    Get PDF
    Producción CientíficaSevere status of coronavirus disease 2019 (COVID-19) is extremely associated to cytokine release. Moreover, it has been suggested that blood group is also associated with the prevalence and severity of this disease. However, the relationship between the cytokine profile and blood group remains unclear in COVID-19 patients. In this sense, we prospectively recruited 108 COVID-19 patients between March and April 2020 and divided according to ABO blood group. For the analysis of 45 cytokines, plasma samples were collected in the time of admission to hospital ward or intensive care unit and at the sixth day after hospital admission. The results show that there was a risk of more than two times lower of mechanical ventilation or death in patients with blood group O (log rank: p = 0.042). At first time, all statistically significant cytokine levels, except from hepatocyte growth factor, were higher in O blood group patients meanwhile the second time showed a significant drop, between 20% and 40%. In contrast, A/B/AB group presented a maintenance of cytokine levels during time. Hepatocyte growth factor showed a significant association with intubation or mortality risk in non-O blood group patients (OR: 4.229, 95% CI (2.064–8.665), p < 0.001) and also was the only one bad prognosis biomarker in O blood group patients (OR: 8.852, 95% CI (1.540–50.878), p = 0.015). Therefore, higher cytokine levels in O blood group are associated with a better outcome than A/B/AB group in COVID-19 patients.Instituto de Salud Carlos III (grant COV20/00491)Junta de Castilla y León (grant 18IGOF

    Mars 2020 Perseverance Rover Studies of the Martian Atmosphere Over Jezero From Pressure Measurements

    Get PDF
    The pressure sensors on Mars rover Perseverance measure the pressure field in the Jezero crater on regular hourly basis starting in sol 15 after landing. The present study extends up to sol 460 encompassing the range of solar longitudes from Ls ∼ 13°–241° (Martian Year (MY) 36). The data show the changing daily pressure cycle, the sol-to-sol seasonal evolution of the mean pressure field driven by the CO2 sublimation and deposition cycle at the poles, the characterization of up to six components of the atmospheric tides and their relationship to dust content in the atmosphere. They also show the presence of wave disturbances with periods 2–5 sols, exploring their baroclinic nature, short period oscillations (mainly at night-time) in the range 8–24 min that we interpret as internal gravity waves, transient pressure drops with duration ∼1–150 s produced by vortices, and rapid turbulent fluctuations. We also analyze the effects on pressure measurements produced by a regional dust storm over Jezero at Ls ∼ 155°.The UPV/EHU team (Spain) is supported by Grant PID2019-109467GB-I00 funded by 1042 MCIN/AEI/10.13039/501100011033/ and by Groups Gobierno Vasco IT1742-22. GM wants to acknowledge JPL funding from USRA Contract Number 1638782. A. Vicente-Retortillo is supported by the Spanish State Research Agency (AEI) Project No. MDM-2017-0737 Unidad de Excelencia “María de Maeztu”- Centro de Astrobiología (INTA-CSIC). Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). GM wants to acknowledge JPL funding from USRA Contract Number 1638782

    Conexión inteligente para la gestión turística desde el aula al destino (CIGTAD – II)

    Get PDF
    Para reducir la brecha digital existente en la sociedad actual es necesario situar la innovación en el núcleo de la toma de decisiones. Este proyecto camina hacia la plena inclusión de todos los colectivos de la comunidad universitaria en el uso de las nuevas tecnologías, y gracias a ellas, poder generar una mayor conciencia social y medioambiental. Desarrollaremos soluciones para la mejora de la accesibilidad a la información que se genera, tanto formal como informal, para los grupos implicados y en cuyos contenidos se introducirá la conceptualización de los ODS y su implicación en sectores tan importantes como el Comercio y el Turismo. Se trabajará con tecnología actual y futura de los destinos turísticos, lo que mejorará, a su vez, la empleabilidad de los egresados en la facultad. El proyecto impulsa la implementación de las tecnologías que se están utilizando en los planes estratégicos de Destinos Turísticos Inteligentes. De este modo, los estudiantes del Grado en Turismo y el Doble Grado en Turismo y Comercio, así como del Máster en Planificación y Gestión de Destinos Turísticos podrán experimentar la inmersión en el uso de este tipo de herramientas. El proyecto estará dividido en 3 fases como son: el análisis, el desarrollo de contenidos y la implementación de las herramientas en el que participarán diferentes colectivos tales como PDI, PAS y Estudiantes de diferentes niveles y Alumni de la Facultad de Comercio y Turismo, así como la participación de una trabajadora social experta en trabajar con colectivos juveniles. El proyecto está alineado para trabajar por mejorar la sostenibilidad de la facultad e incrementar el nivel de compromiso de los colectivos con los objetivos de la Agenda 2030

    Convective Vortices and Dust Devils Detected and Characterized by Mars 2020

    Get PDF
    We characterize vortex and dust devils (DDs) at Jezero from pressure and winds obtained with the Mars Environmental Dynamics Analyzer (MEDA) instrument on Mars 2020 over 415 Martian days (sols) (Ls = 6°–213°). Vortices are abundant (4.9 per sol with pressure drops >0.5 Pa correcting from gaps in coverage) and they peak at noon. At least one in every five vortices carries dust, and 75% of all vortices with Δp > 2.0 Pa are dusty. Seasonal variability was small but DDs were abundant during a dust storm (Ls = 152°–156°). Vortices are more frequent and intense over terrains with lower thermal inertia favoring high daytime surface-to-air temperature gradients. We fit measurements of winds and pressure during DD encounters to models of vortices. We obtain vortex diameters that range from 5 to 135 m with a mean of 20 m, and from the frequency of close encounters we estimate a DD activity of 2.0–3.0 DDs km−2 sol−1. A comparison of MEDA observations with a Large Eddy Simulation of Jezero at Ls = 45° produces a similar result. Three 100-m size DDs passed within 30 m of the rover from what we estimate that the activity of DDs with diameters >100 m is 0.1 DDs km−2sol−1, implying that dust lifting is dominated by the largest vortices in Jezero. At least one vortex had a central pressure drop of 9.0 Pa and internal winds of 25 ms−1. The MEDA wind sensors were partially damaged during two DD encounters whose characteristics we elaborate in detail.The authors are very grateful to the entire Mars 2020 science operations team. The authors would also like to thank Lori Fenton and an anonymous reviewer for many suggestions that greatly improved the manuscript. This work was supported by Grant PID2019-109467GB-I00 funded by MCIN/AEI/10.13039/501100011033/ and by Grupos Gobierno Vasco IT1742-22 and by the Spanish National Research, Development and Innovation Program, through the Grants RTI2018-099825-B-C31, ESP2016-80320-C2-1-R, and ESP2014-54256-C4-3-R. Baptiste Chide is supported by the Director's Postdoctoral Fellowship from the Los Alamos National Laboratory. M. Lemmon is supported by contract 15-712 from Arizona State University and 1607215 from Caltech-JPL. R. Lorenz was supported by JPL contract 1655893. Germán Martínez acknowledges JPL funding from USRA Contract Number 1638782. A. Munguira was supported by Grant PRE2020-092562 funded by MCIN/AEI and by “ESF Investing in your future.” A. Vicente-Retortillo is supported by the Spanish State Research Agency (AEI) Project No. MDM-2017-0737 Unidad de Excelencia “María de Maeztu”-Centro de Astrobiología (INTA-CSIC), and by the Comunidad de Madrid Project S2018/NMT-4291 (TEC2SPACE-CM). Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). Finnish researchers acknowledge the Academy of Finland Grant 328 310529. Researchers based in France acknowledge support from the CNES for their work on Perseverance
    corecore