1,378 research outputs found
CIAL/CSIC: "La salud va a marcar el futuro de la alimentación con soluciones adaptadas a las necesidades del consumidor"
Alimentación, salud y bienestar marcarán las tendencias del sector a corto, medio y largo plazo. También es clave la implantación de nuevos proyectos de innovación que puedan derivar en productos de nutrición personalizada.Peer Reviewe
Assessing the effectiveness of perimeter lockdowns as a response to epidemics at the urban scale
From September 2020 to May 2021 Madrid region (Spain) followed a rather unique non-pharmaceutical intervention (NPI) by establishing a strategy of perimeter lockdowns (PLs) that banned travels to and from areas satisfying certain epidemiological risk criteria. PLs were pursued to avoid harsher restrictions, but some studies have found that the particular implementation by Madrid authorities was rather ineffective. Based on Madrid’s case, we devise a general, minimal framework to investigate the PLs effectiveness by using a data-driven metapopulation epidemiological model of a city, and explore under which circumstances the PLs could be a good NPI. The model is informed with real mobility data from Madrid to contextualize its results, but it can be generalized elsewhere. The lowest lockdown activation threshold Θ considered (14-day cumulative incidence rate of 20 cases per every 105 inhabitants) shows a prevalence reduction >20% with respect to the scenario Θ=103, more akin to the case of Madrid, and assuming no further mitigation. Only the combination of Θ=20 and mobility reduction >90% can avoid PLs for more than >20% of the system. The combination of low Θ and strong local transmissibility reduction is key to minimize the impact, but the latter is harder to achieve given that we assume a situation with highly mitigated transmission, resembling the one observed during the second wave of COVID-19 in Madrid. Thus, we conclude that a generalized lockdown is hard to avoid under any realistic setting if only this strategy is applied
Profile of the woman music performer: training, adherence, frequency and professionalism
[ES] Resumen
Las mujeres siempre han participado activamente en la música, a pesar de la existencia de importantes
desigualdades de género. El presente estudio, de metodología cuantitativa y diseño ex post facto,
pretende conocer su situación actual. No se hallaron diferencias significativas entre mujeres y
hombres en relación a su formación musical y adherencia a la práctica; sin embargo, aún persisten
estereotipos de género en cuanto a estilo y elección de instrumento, así como diferencias en la
dedicación durante la etapa central de la vida profesional. Es necesario visibilizar la participación
pasada y presente de las mujeres en tareas musicales tradicionalmente consideradas masculinas y
desarrollar políticas sociales activas en pos de una plena igualdad de género en la actividad musica
Mathematical model for manoeuvrability of a riverine support patrol vessel with a pump-jet propulsion system
A study on the manoeuvrability of a riverine support patrol vessel is made to derive a mathematical model and simulate maneuvers with this ship. The vessel is mainly characterized by both its wide-beam and the unconventional propulsion system, that is, a pump-jet type azimuthal propulsion. By processing experimental data and the ship characteristics with diverse formulae to find the proper hydrodynamic coefficients and propulsion forces, a system of three differential equations is completed and tuned to carry out simulations of the turning test. The simulation is able to accept variable speed, jet angle and water depth as input parameters and its output consists of time series of the state variables and a plot of the simulated path and heading of the ship during the maneuver. Thanks to the data of full-scale trials previously performed with the studied vessel, a process of validation was made, which shows a good fit between simulated and full-scale experimental results, especially on the turning diamete
A study on the shallow water effect on a ship's pivot point
Information on the pivot point of a turning ship is collected, taking into account practical notes and manuals on ship maneuvering as well as experimental data and simulated results which all together reveal a consistent behavior when varying water depth or some ship particulars. Results from the studies already carried out on the Riverine Support Patrol Vessel (RSPV) of the Colombian Navy are included in this one, in order to estimate the pivot point’s position and to contrast those results with theory and available empirical observations. Linear manoeuvrability theory is tested and its results show poor approximation with respect to the kinematic equations. As to the depth variation effect, by means of fullscale experiments it is confirmed that the pivot point’s position, when going to shallow water, always varies in the same way, proving to be coherent with the available information on this phenomenon
Some contributions to the study of oenological lactic acid bacteria through their interaction with polyphenols
Probiotic features and the ability of two oenological lactic acid bacteria strains (Pediococcus pentosaceus CIAL‐86 and Lactobacillus plantarum CIAL‐121) and a reference probiotic strain (Lactobacillus plantarum CLC 17) to metabolize wine polyphenols are examined. After summarizing previous results regarding their resistance to lysozyme, gastric juice and bile salts, the three strains were assessed for their ability to release phenolic metabolites after their incubation with a wine phenolic extract. Neither of the two bacteria were able to metabolize wine polyphenols, at least in the conditions used in this study, although a certain stimulatory effect on bacterial growth was observed in the presence of a wine‐derived phenolic metabolite (i.e., 3,4‐dihydroxyphenylacetic acid) and a wine phenolic compound (i.e., (+) ‐catechin). Bacteria cell‐free supernatants from the three strains delayed and inhibited almost completely the growth of the pathogen E. coli CIAL‐153, probably due to the presence of organic acids derived from the bacterial metabolism of carbohydrates. Lastly, the three strains showed a high percentage of adhesion to intestinal cells, and pre‐incubation of Caco‐2 cells with bacteria strains prior to the addition of E. coli CIAL‐153 produced a notable inhibition of the adhesion of E. coli to the intestinal cells.The study was supported by the projects AGL2012-40172-C02-01 and AGL2015-64522-C2-1-R of
the Spanish Ministry of Economy and Competitiveness (MINECO) and ALIBIRD S2013/ABI-2728 of the
Comunidad de Madrid, as well as COST Action POSITIVe FA1403. IG-S is the recipient of an FPU contract
from the Spanish Ministry of Education. AE-F is the recipient of an FPI contract from the Spanish MINECO
(Project AGL2012-40172-C02-01).
We acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI).We acknowledge the support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI)
Passenger Exposure to Magnetic Fields in Electric Vehicles
In electric vehicles, passengers sit very close to an electric system of significant power, usually for a considerable amount of time. The relatively high currents achieved in these systems and the short distances between the power devices and the passengers mean that the latter could be exposed to relevant magnetic fields. This implies that it becomes necessary to evaluate the electromagnetic environment in the interior of these vehicles before releasing them in the market. Moreover, the hazards of magnetic field exposure must be taken into account when designing electric vehicles and their components. For this purpose, estimation tools based on finite element simulations can prove to be very useful. With appropriate design guidelines, it might be possible to make electric vehicles safe from the electromagnetic radiation point of view
Evaluation of the Magnetic Field Generated by the Inverter of an Electric Vehicle
In hybrid and electric vehicles, passengers sit very close to an electric system of significant power, which means that they may be subjected to high electromagnetic fields. The hazards of long-term exposure to these fields must be taken into account when designing electric vehicles and their components. Among all the electric devices present in the power train, the electronic converter is the most difficult to analyze, given that it works with different frequencies. In this paper, a methodology to evaluate the magnetic field created by a power electronics converter is proposed. After a brief overview of the recommendations of electromagnetic fields exposure, the magnetic field produced by an inverter is analyzed using finite element techniques. The results obtained are compared to laboratory measurements, taken from a real inverter, in order to validate the model. Finally, results are used to draw some conclusions regarding vehicle design criteria and magnetic shielding efficiency
Geoquímica del W en el área circundante al yacimiento de cheelita de Barruecopardo (Salamanca)
La microclinización, proceso ácido débil, implica una corrosión de plagioclasas y una transformación biotita-clorita, con paso del W de dicha biotita a la fase volátil, bajo forma compleja. El descenso de presión en las fisuras (filones) hace precipitar a los wolframatos. Este mecanismo explica el empobrecimiento en W en las inmediaciones del yacimiento, y justifica una explicación geoquímica y mineralógica expuesta precedentemente
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