Search results for "valor"
showing 10 items of 857 documents
Accrochage scolaire et alliances éducatives : vers une intégration des approches scolaires et communautaires
2012
À partir d’une revue des facteurs de risque du décrochage scolaire et en vue d’illustrer le caractère multidimensionnel de la problématique, le présent texte montre l’importance des facteurs scolaires et en particulier la prégnance des effets de l’étiquetage et du climat scolaire sur le phénomène du décrochage. Si l’école peut générer de l’exclusion, elle peut aussi, dans certains cas, cultiver des facteurs de protection, par exemple par des relations de soutien, d’empathie et d’accompagnement individualisé, qui peuvent faciliter l’accrochage scolaire de jeunes à risque. Dans ce contexte, nous illustrons l’approche scolaire du traitement du décrochage en décrivant des structures qui permett…
Acid and alkaline production from multi-ionic brines via Electrodialysis with Bipolar Membranes
2022
In recent years, a great attention has grown towards the brine valorization through chemicals production and mineral recovery as an alternative to conventional disposal. Electrodialysis with Bipolar Membranes (EDBM) is an emerging process that can be used for the production of alkaline and acidic solutions from salt solutions. Within the SEArcularMINE project framework, the exploitation of saltworks bitterns (highly concentrated solutions generated during the sea-salt production process) is proposed for minerals recovery and NaOH and HCl solutions production. In this work, an EDBM unit, equipped with commercial ion exchange membranes, was tested for the first time in closed-loop mode with: …
La calidad periodística en España según la percepción de los periodistas
2015
Este artículo expone los resultados de una investigación sobre la percepción que tienen los periodistas españoles de la calidad periodística, teniendo en cuenta el contexto económico, tecnológico, empresarial, laboral y profesional. Los resultados de una encuesta, en la que participan 363 periodistas españoles con al menos tres años de experiencia en diferentes medios, ponen de manifiesto carencias relativas tanto a la relevancia y diversidad de los temas abordados como al acceso a las fuentes o el tratamiento y verificación de los datos, así como a las condiciones laborales o a los retos derivados de la adaptación a las nuevas tecnologías y a las imposiciones de la acuciante inmediatez. Ju…
Enseñanza de las ciencias : revista de investigación y experiencias didácticas
1993
Resumen basado en el de la publicación Resumen en inglés ¿La educación sanitaria es lo mismo que la educación para la salud? ¿Qué factores hay que tener en cuenta al configurar un plan de estudios para la educación de la salud? ¿Es necesario tratar asuntos de salud tales como higiene, vacunaciones, etc., para desarrollar este tipo de educación para las escuelas? Estas son solo algunas de las preguntas que se plantean y se muestra el uso de fuentes que determinan un plan de estudios, como en el caso específico de Alimentación-Nutrición. ESP
Premio mundial de las artes 2001
2001
Se trata de la transcripción del borrador del discurso de José Vidal-Beneyto en la entrega del Premio Mundial de las Artes a Peter Brook (Encuentro Mundial de las Artes, 2001).
Green Extraction Strategies for Sea Urchin Waste Valorization
2021
Commonly known as “purple sea urchin,” Paracentrotus lividus occurs in the Mediterranean Sea and the eastern Atlantic Ocean. This species is a highly appreciated food resource and Italy is the main consumer among the European countries. Gonads are the edible part of the animal but they represent only a small fraction (10–30%) of the entire sea urchin mass, therefore, the majority ends up as waste. Recently, an innovative methodology was successfully developed to obtain high-value collagen from sea urchin by-products to be used for tissue engineering. However, tissues used for the collagen extraction are still a small portion of the sea urchin waste (<20%) and the remaining part, main…
Long-term properties and end-of-life of polymers from renewable resources
2017
[EN] The long-term properties and end-of-life of polymers are not antagonist issues. They actually are inherently linked by the duality between durability and degradation. The control of the service-todisposal pathway at useful performance, along with low-impact disposal represents an added-value. Therefore, the routes of design, production, and discarding of bio-based polymers must be carefully strategized. In this sense, the combination of proper valorisation techniques, i.e. material, energetic and/ or biological at the most appropriate stage should be targeted. Thus, the consideration of the end-of-life of a material for a specific application, instead of the end-of-life of a material s…
Suitability of blends from virgin and reprocessed polylactide: performance and energy valorization kinetics
2018
[EN] A blending strategy of virgin and reprocessed polylactide may be postulated as an alternative to reduce the material cost at industrial level, and as a valorisation route to plastic waste management of production scraps. The performance of blends prepared from virgin polylactide and polylactide mechanically reprocessed up to two cycles (PLA-V/R) was assessed in terms of thermo-oxidative stability, morphology, viscoelasticity and thermal kinetics for energetic valorisation. PLA-V/R blends showed appropriate thermo-oxidative stability. The amorphous nature of polylactide was preserved after blending. The viscoelastic properties showed an increment of the mechanical blend effectiveness, w…
Application of Pulsed Electric Field Treatment for Food Waste Recovery Operations
2016
International audience; Food industry is generating annually huge quantities of by-products and waste, which are generally considered as problem, as their disposal is associated with environmental and health related issues. During the last decade, numerous research groups and industries have been interested in valorizing these by-products by extracting valuable compounds and incorporating them generally in food and/or cosmetic products, which enhances the profitability of the process. Conventional extraction methods (i.e., maceration, thermal extraction) are exten- sively used for such purposes and showed high yields in many cases. However, the need to replace toxic organic solvents, shorte…
L'allevamento bovino nella Vale del Torto: un caso di zootecnia sostenibile in Sicilia
2011
La zootecnia pur non risultando tra le principali attività del settore agricolo siciliano, riveste un ruolo di estrema importanza sociale, ancor più che economica, per ampie zone della Sicilia. La crisi che dagli inizi degli anni 2000 investe il settore, ed in particolare quello bovino, ha provocato tanto la chiusura di un elevato numero di allevamenti che una forte contrazione dei capi allevati, siano essi ad indirizzo carne che ad indirizzo latte. La zootecnia bovina ad indirizzo carne presente nella Valle del Torto, in provincia di Palermo e zona oggetto del presente studio, ha per molti decenni decisamente contribuito allo sviluppo di una comunità rurale che su questa attività ha creato…