21 research outputs found

    Coche eléctrico: por qué ha resurgido después de fracasar el siglo pasado

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    El año pasado, las ventas de vehĂ­culos elĂ©ctricos e hĂ­bridos plug–in (enchufables) sumaron 408 000 unidades en Europa y 2,1 millones en todo el mundo. Los nĂșmeros suponen un 50 % mĂĄs, aproximadamente, que en 2017. Para este 2019, se espera alcanzar otro aumento cercano al 50 %. Se podrĂ­an superar los tres millones de vehĂ­culos elĂ©ctricos vendidos en un año

    L’aula inversa: una forma activa d’aprenentage tutelat

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    La transmissiĂł de coneixement, a partir de les explicacions orals del professor, Ă©s la forma menys eficient d’aprenentatge, d’acord amb els teĂČrics d’aquesta branca del coneixement. En aquest sentit, l’aula inversa organitza el treball previ, de forma que l’explicaciĂł del professor provĂ© de les qĂŒestions plantejades pel

    L’aula inversa

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    L'aula inversa (The Flipped Classroom) Ă©s un enfocament d'ensenyament universitari la repercussiĂł del qual en la innovaciĂł en l'educaciĂł superior i el seu potencial per a la millora de l'ensenyament sĂłn molt prometedors. Aquest enfocament inverteix la tradicional seqĂŒĂšncia d'activitats en l'educaciĂł superior: ensenyament‐estudiavaluaciĂł, per la seqĂŒĂšncia estudi‐(auto, peer, hetero) ‐avaluació‐ensenyament. Suposa un desplaçament intencional fora de l'aula de determinades parts del contingut de les assignatures d'una titulaciĂł

    Theoretical characterization of transition state dynamical resonances in heavy-light-heavy reactions

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    The resonant reactivity of three elementary Heavy-Light-Heavy reactions is presented and discussed. Collinear reactivity, in which a vibrational adiabatic model is constructed, is used for a detailed analysis of resonance phenomena, which appear as a direct consequence of transition state metastable states in the strong interaction region of the potential energy surface. Their influence on the detailed mechanism of the elementary process is also discussed. The shape of the resonant peak, and the phase and the Argand plot of the S-matrix are used for a further characterization.Three-dimensional approximate calculations are used to test the evolution of the energy dependent structure present in detailed quantities when sums and integrations over all partial waves contributing to reaction are taken into account to obtain the usual averaged global quantities such as integral state-to-state cross sections

    Prospective individual patient data meta-analysis of two randomized trials on convalescent plasma for COVID-19 outpatients

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    Data on convalescent plasma (CP) treatment in COVID-19 outpatients are scarce. We aimed to assess whether CP administered during the first week of symptoms reduced the disease progression or risk of hospitalization of outpatients. Two multicenter, double-blind randomized trials (NCT04621123, NCT04589949) were merged with data pooling starting when = 50 years and symptomatic for <= 7days were included. The intervention consisted of 200-300mL of CP with a predefined minimum level of antibodies. Primary endpoints were a 5-point disease severity scale and a composite of hospitalization or death by 28 days. Amongst the 797 patients included, 390 received CP and 392 placebo; they had a median age of 58 years, 1 comorbidity, 5 days symptoms and 93% had negative IgG antibody-test. Seventy-four patients were hospitalized, 6 required mechanical ventilation and 3 died. The odds ratio (OR) of CP for improved disease severity scale was 0.936 (credible interval (CI) 0.667-1.311); OR for hospitalization or death was 0.919 (CI 0.592-1.416). CP effect on hospital admission or death was largest in patients with <= 5 days of symptoms (OR 0.658, 95%CI 0.394-1.085). CP did not decrease the time to full symptom resolution

    Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic

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    This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic

    La MĂ gia de l'aigua

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    ConferĂšncia impartida dins el cicle de xerrades de la Setmana de la CiĂšncia 2018 a l'EPSEVG.L’aigua Ă©s una substĂ ncia extraordinĂ ria. No podem entendre la nostra existĂšncia, ni la nostra civilitzaciĂł, sense el seu paper primordial. És el compost mĂ©s abundant a l’Univers, i el senyal mĂ©s preuat en l’exploraciĂł de planetes. Tot i la seva importĂ ncia, Ă©s una substĂ ncia estranya, de la que es coneixen mĂ©s de setanta propietats peculiars: Ă©s gairebĂ© l’Ășnic sĂČlid que flota en el seu lĂ­quid, perĂČ Ă©s el que permet l’abundĂ ncia de vida submarina; n’hem de beure constantment, perĂČ pot ser la substĂ ncia mĂ©s corrosiva; Ă©s un lĂ­quid que travessa gairebĂ© tot, perĂČ pot ser un metall; l’aigua dolça Ă©s vital, l’aigua salada ens fulmina; Ă©s gairebĂ© incolora, perĂČ a la natura ens mostra tots els colors

    L’aula inversa: una forma activa d’aprenentage tutelat

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    La transmissiĂł de coneixement, a partir de les explicacions orals del professor, Ă©s la forma menys eficient d’aprenentatge, d’acord amb els teĂČrics d’aquesta branca del coneixement. En aquest sentit, l’aula inversa organitza el treball previ, de forma que l’explicaciĂł del professor provĂ© de les qĂŒestions plantejades pel

    Coche eléctrico: por qué ha resurgido después de fracasar el siglo pasado

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