511 research outputs found
Herramienta de autoría de contenidos didácticos multimedia para entorno de formación colaborativo en cirugía de mínima invasión
Dada la gran importancia de los contenidos para el éxito del proceso de formación es necesario desarrollar herramientas que permitan la creación de los mismos de una manera simple, eficaz y motivadora. Actualmente, su proceso de creación es largo y costoso, teniendo que llevarlo a cabo expertos cirujanos docentes en estrecha colaboración con técnicos especialistas en herramientas de edición y creación de contenidos multimedia. El presente trabajo de investigación presenta una nueva herramienta de autoría que permite la creación y edición de contenidos didácticos multimedia que son utilizados en el proceso de formación de los cirujanos. La herramienta incorpora un editor multimedia de vídeos laparoscópicos, capaz de realizar un procesamiento y agregar valor didáctico a los vídeos originales. La herramienta de autoría se incorpora en un entorno de formación web que permite crear, compartir y reutilizar contenidos didácticos basados en la edición de vídeo laparoscópico
Beam-Ion Acceleration during Edge Localized Modes in the ASDEX Upgrade Tokamak
The acceleration of beam ions during edge localized modes (ELMs) in a tokamak is observed for the first
time through direct measurements of fast-ion losses in low collisionality plasmas. The accelerated beamion
population exhibits well-localized velocity-space structures which are revealed by means of tomographic
inversion of the measurement, showing energy gains of the order of tens of keV. This suggests that
the ion acceleration results from a resonant interaction between the beam ions and parallel electric fields
arising during the ELM. Orbit simulations are carried out to identify the mode-particle resonances
responsible for the energy gain in the particle phase space. The observation motivates the incorporation of a
kinetic description of fast particles in ELM models and may contribute to a better understanding of the
mechanisms responsible for particle acceleration, ubiquitous in astrophysical and space plasmas.H2020 Marie- Sklodowska Curie programme (Grant No. 708257)Ministerio de Economía y Competitividad. FIS2015-69362-
Adaptación de la usabilidad del entorno de formación TELMA a las necesidades de los cirujanos expertos
Uno de los principales inconvenientes manifestados por los cirujanos a la hora de llevar a cabo su formación continuada es la elevada carga asistencial que les limita la posibilidad de asistir a cursos y estancias presenciales. Por tanto, los cirujanos necesitan otros métodos formativos distintos a la formación in situ y para ello son de gran utilidad las tecnologías web, como es el caso de la plataforma de e-Learning TELMA, que ofrezcan contenidos didácticos adaptados a cada usuario para que puedan complementar su formación con contenidos multimedia online. Estudios previos de validación de TELMA detectaron diferentes problemas respecto a su diseño y usabilidad, propiciando mayores dificultades de accesibilidad para los cirujanos expertos en relación a los cirujanos noveles. Para corregirlos, en este trabajo se han analizado las deficiencias encontradas y se han propuesto una serie de medidas fundamentadas en un conjunto de directivas de diseño web que se deberían adoptar en futuras versiones de la plataforma TELMA para tratar de solventar estas desigualdades, ofreciendo a todos los usuarios tanto expertos como noveles, las mismas facilidades de accesibilidad
The late-Variscan peraluminous Valdepeñas pluton (southern Central Iberian Zone)
The Valdepeñas pluton is the easternmost outcrop of the Cáceres-Valdepeñas magmatic alignment (southern Central Iberian Zone). This massif is constituted by a cordierite-bearing porphyritic monzogranite and may be grouped within the so-called “Serie Mixta” granitoids. The Valdepeñas monzogranite is of magnesian [FeOt/(FeOt+MgO)~0.76], alkali-calcic [(Na2O+K2O)–CaO=7.8–8.5] and peraluminous (A/CNK=1.14–1.20). Multielemental- and REE-normalized patterns are comparable to those of similar rocks in the Nisa- Alburquerque-Los Pedroches magmatic alignment, and slightly differ from those of the Montes de Toledo batholith, both in the southern Central Iberian Zone. The U-Pb zircon age of 303±3Ma is consistent with the late-orogenic character of the intrusion and is in accordance with most of the granitic peraluminous intrusions in the southern Central Iberian Zone. 86Sr/87Sr300Ma ratios (0.707424–0.711253), εNd300Mavalues (-5.53 to -6.68) and whole-rock major and trace element compositions of the studied rocks, suggest that the parental magma of the Valdepeñas monzogranite could derive from a crustal metaigneous source. The U-Pb ages (552–650Ma) of inherited zircon cores found in Valdepeñas monzogranite samples match those often found in Lower Paleozoic metavolcanics and granitic orthogneisses of Central Iberia and, furthermore, point to Upper Neoproterozoic metaigneous basement rocks as possible protoliths at the magma source. Based on the solubility of monazite in peraluminous melts, the estimated emplacement temperature of the studied monzogranite is 742–762ºC. The results obtained in this work would contribute to a better understanding of the origin of the “Serie Mixta” granitoids
The short and long-term effects of aerobic, strength, or mixed exercise programs on schizophrenia symptomatology
The purpose of this study was to compare the effects of three different physical exercise programs on the symptomatology, body composition, physical activity, physical fitness, and quality of life of individuals with schizophrenia. A total of 432 patients were assessed for eligibility and 86 were randomized into the aerobic (n = 28), strength (n = 29) or mixed (n = 29) groups. Positive, negative, and general symptoms of psychosis, body mass index (BMI), physical activity (IPAQ-SF), physical fitness (6-min walk test [6MWT] and hand-grip strength [HGS]), and quality of life (WHOQUOL-BREF) were assessed at baseline, post-intervention (16 weeks), and at 10-months. Our results at 16 weeks showed significant improvements in all three groups in the negative, general, and total symptoms with moderate to large effect sizes (P < 0.01, ¿p2 > 0.11), no change in the BMI, 6MWT or IPAQ-SF, and a significant improvement in the HGS test in the strength and mixed groups (P = 0.05, ¿p2 > 0.08). Nonetheless, all the improvements had disappeared at 10 months. We concluded that 3 weekly sessions of a moderate to vigorous progressive exercise program for 16 weeks improved the symptomatology of individuals with schizophrenia in all three groups, with no differences between them. However, the effects had declined to baseline levels by the 10-month follow-up, suggesting that exercise interventions should be maintained over time. © 2021, The Author(s)
Real space observation of the magnetic coupling between a Co film and a barium hexaferrite film
RIVA ONLINE 2021 – IBERIAN VACUUM ONLINE MEETING.
The Iberian Vacuum Conference, (Reunión Ibérica de Vacío, RIVA) is a joint meeting of the Portuguese Vacuum Society (SOPORVAC) and the Spanish Vacuum Society (ASEVA),
2021 RIVA will take place ON-LINE from 4-6th October 2021. .-https://aseva.es/conferences/riva-online/Barium ferrite (BaFe12O19, BFO) is a hexagonal ferrite with applications as permanent magnet in many different devices due to its high magnetocrystalline anisotropy, high coercive field and low cost. However, the moderate saturation magnetization of BFO
means that the energy product is orders of magnitude smaller than the one that rare-earth-based magnetic materials offer. To overcome this limitation, a commonly proposed strategy to enhance the energy product is exchange-coupling the magnetically hard
component (BFO) with a soft phase in order to improve the combined remanent magnetization without a high loss in coercivity. Nonetheless, the results obtained in other hard/soft systems (SFO/Co bilayers) have pointed out the difficulty to take advantage of
this rigid coupling magnetic regime1. In this research, we focus on two steps to investigate the Co/BFO coupling in a bilayer system: first, we sought to obtain BFO films with an in-
plane magnetic easy axis to avoid shape anisotropy competition, and second, we deposit Co on top of such a BFO film while monitoring both the BFO and Co magnetic domains
Pembrolizumab as Consolidation Strategy in Patients with Multiple Myeloma: Results of the GEM-Pembresid Clinical Trial
PD1 expression in CD4+ and CD8+ T cells is increased after treatment in multiple myeloma patients with persistent disease. The GEM-Pembresid trial analyzed the efficacy and safety of pembrolizumab as consolidation in patients achieving at least very good partial response but with persistent measurable disease after first- or second-line treatment. Moreover, the characteristics of the immune system were investigated to identify potential biomarkers of response to pembrolizumab. One out of the 17 evaluable patients showed a decrease in the amount of M-protein, although a potential late effect of high-dose melphalan could not be ruled out. Fourteen adverse events were considered related to pembrolizumab, two of which (G3 diarrhea and G2 pneumonitis) prompted treatment discontinuation and all resolving without sequelae. Interestingly, pembrolizumab induced a decrease in the percentage of NK cells at cycle 3, due to the reduction of the circulating and adaptive subsets (0.615 vs. 0.43, p = 0.007; 1.12 vs. 0.86, p = 0.02). In the early progressors, a significantly lower expression of PD1 in CD8+ effector memory T cells (MFI 1327 vs. 926, p = 0.03) was observed. In conclusion, pembrolizumab used as consolidation monotherapy shows an acceptable toxicity profile but did not improve responses in this MM patient population. The trial was registered at clinicaltrials.gov with identifier NCT02636010 and with EUDRACT number 2015-003359-23.This study was funded by Fundación Ramón Areces (FRA 16/003). T.P. is supported by a grant from the AECC (INVES18043PAIN). This study received financial support from Merck Sharp & Dohme of Spain, a subsidiary of Merck & Co., Inc., Whitehouse Station, New Jersey, USA
Obtaining cloud top height from WRF model vertical profiles: application to the EUSO program
The objective of the Extreme Universe Space Observatory (EUSO) program is detection and measurement of high-energy particles that reach earth?s atmosphere from space. Clouds at mid and upper levels of the troposphere can interfere with such detection. Therefore, determining cloud top height with high accuracy is crucial to estimating the effect of clouds on these measurements.With this aim, we developed a method to extract that height using cloud temperature via vertical profiles predicted by the WRF model
Actions for the Conservation and Restoration of the Dunes and Wetlands in the Salinas of San Pedro del Pinatar: LIFE-Salinas Project (Murcia, Southeast of Spain)
© 2022 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://
creativecommons.org/licenses/by/
4.0/).The LIFE SALINAS project, co-financed by the European Union, aims for the conservation and improvement of the protected area named the Regional Park of Las Salinas and Arenales de San Pedro del Pinatar (Region of Murcia, Spain). The main objectives are, among others, to stop the erosion of the dunes in front of a 500 m long beach and to expand the breeding habitat of aquatic birds. Between the dune and the beach, a barrier was placed to protect the dune from the effects of storms. The dunes were fenced, placed with sand traps and revegetation was carried out with native species in the most degraded areas. Within the salt pans, 1800 m of new sandy dikes were built to separate the salt ponds. The results have been the recovery of the dune ecosystem and the increase in the population of nesting aquatic birds and other species, as well as an increase in the quality and production of salt
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