Search results for " VIA"
showing 10 items of 388 documents
Inquiry-based environments for bio-signal processing training in engineering education
2021
Active student engagement, teaching via experience in real-life settings and learning by doing, are pedagogical strategies appropriate to improve student-reasoning skills. By building models, performing investigations, examining and explaining experimental results, using theoretical and computational thinking, constructing representations, undergraduates can acquire a deeper understanding of fundamental disciplinary concepts while reinforcing transversal abilities. In this framework, Engineering courses should be designed with the final objective to develop practical skills, focusing on hands-on activities. This contribution presents two different inquiry-based learning environments recent…
El sistema de personajes en la obra narrativa de Boris Vian
2002
El sistema de personajes en la obra narrativa de Boris VianEn esta tesis hemos abordado el estudio de la constelación de personajes en la obra narrativa de Boris Vian. Tras exponer un panorama crítico sobre dicho autor y teórico sobre el personaje narrativo del siglo XX, y una vez que hemos analizado detalladamente la producción vianesca, nos hemos decantado por abordar la configuración de los originales e innovadores personajes de este autor desde diferentes ópticas y aproximaciones.Hemos optado por aprehenderlo en toda su diversidad y complejidad siguiendo las reglas del juego que nos plantea Boris Vian, esto es, intentando no desvirtuar ni guiar hacia otros derroteros su obra narrativa. …
A way to follow the viability of encapsulated Bifidobacterium bifidum subjected to a freeze-drying process in order to target the colon: Interest of …
2012
The aim of this work was to apply flow cytometry in order to assess and compare the viability of freeze-dried entrapped bacteria with an usual technique by quantification by plate count techniques. It also aimed at studying the effect of various cryoprotectants on the viability of an entrapped Bifidobacterium bifidum subjected to freeze-drying to check their ability to be delivered all along the gastro-intestinal tract. The alginate-pectinate beads were chosen as the encapsulation matrix added with different protectants. The beads were characterized by scanning electron microscopy and the viability was checked by both methods. The best combination to improve viability of entrapped bacteria …
Noticias del botánico aragonés Baltasar Boldó
2018
Conocidos hoy los trabajos naturalísticos de Baltasar Boldó, traemos aquí varias noticias nuevas de su paso por la Universidad de Zaragoza y por la isla de Cuba. / Although the Naturalist work of Baltasar Boldó is already well-known, we bring new news of his stay both in the Universidad de Zaragoza and Cuba.
High gas pressure: An innovative method for the inactivation of dried bacterial spores
2012
In this article, an original non-thermal process to inactivate dehydrated bacterial spores is described. The use of gases such as nitrogen or argon as transmission media under high isostatic pressure led to an inactivation of over 2 logs CFU/g of Bacillus subtilis spores at 430 MPa, room temperature, for a 1 min treatment. A major requirement for the effectiveness of the process resided in the highly dehydrated state of the spores. Only a water activity below 0.3 led to substantial inactivation. The solubility of the gas in the lipid components of the spore and its diffusion properties was essential to inactivation. The main phenomenon involved seems to be the sorption of the gas under pres…
ANTIMICROBIAL AND ANTISTAPHYLOCOCCAL BIOFILM ACTIVITY FROM THE SEA URCHIN PARACENTROTUS LIVIDUS
2009
Aims: Staphylococcal biofilm-associated infections are resistant to conventional antibiotics. Consequently, new agents are needed to treat them. With this aim, we focused on the effector cells (coelomocytes) of the sea urchin Paracentrotus lividus immune system. Methods and Results: We tested the activity of the 5-kDa peptide fraction of the cytosol from coelomocytes (5-CC) against a group of Gram-positive, Gram-negative bacteria and fungi. We determined minimal inhibitory concentrations (MICs) ranging from 253.7 to 15.8 mg ml(-1). We observed an inhibitory activity and antibiofilm properties of 5-CC against staphylococcal biofilms of reference strains Staphylococcus epidermidis DSM 3269 an…
In vitro anti-biofilm activity of Boswellia spp. oleogum resin essential oils
2009
Aims: To evaluate the anti-biofilm activity of the commercially available essential oils from two Boswellia species. Methods and Results: The susceptibility of staphylococcal and Candida albicans biofilms was determined by methyltiazotetrazolium (MTT) staining. At concentrations ranging from 217·3 μg ml−1 (25% v/v) to 6·8 μg ml−1 (0·75% v/v), the essential oil of Boswellia papyrifera showed considerable activity against both Staphylococcus epidermidis DSM 3269 and Staphylococcus aureus ATCC 29213 biofilms. The anti-microbial efficacy of this oil against S. epidermidis RP62A biofilms was also tested using live/dead staining in combination with fluorescence microscopy, and we observed that …
Cellular, physiological, and molecular adaptive responses of Erwinia amylovora to starvation.
2013
Erwinia amylovora causes fire blight, a destructive disease of rosaceous plants distributed worldwide. This bacterium is a nonobligate pathogen able to survive outside the host under starvation conditions, allowing its spread by various means such as rainwater. We studied E. amylovora responses to starvation using water microcosms to mimic natural oligotrophy. Initially, survivability under optimal (28 °C) and suboptimal (20 °C) growth temperatures was compared. Starvation induced a loss of culturability much more pronounced at 28 °C than at 20 °C. Natural water microcosms at 20 °C were then used to characterize cellular, physiological, and molecular starvation responses of E. amylovora. Ch…
Un caso di sternismo: le "Avventure e osservazioni" di Filippo Pananti
1997
Il saggio studia l'influsso di Sterne sulle "Avventure e osservazioni" di Pananti e su altre relazioni di viaggio di primo Ottocento. The essay deals about Sterne's influence on Pananti's and othes authors' travel literature
Jubilación parcial y contrato de relevo: regulación y prospectiva
2022
En el marco de la “sociedad del bienestar” los Estados deben procurar acomodar la transición hacia la jubilación proveyendo a sus ciudadanos de vías efectivas, diversas y adaptadas a sus condiciones e intereses. Así pues, ante una “economía del conocimiento” donde las competencias profesionales de los recursos humanos de un país u organización adquieren un valor estratégico en términos de competitividad, resulta pertinente analizar el régimen jurídico de la jubilación parcial y del contrato de relevo.Respecto de dichas instituciones, en este trabajo se discuten sus distintas finalidades, incidiendo en su viabilidad y utilidad como fórmula adecuada al fin de transmitir bidireccionalmente las…