Search results for "mass [charm]"
showing 10 items of 709 documents
The Influence of Biomass Ash on the Migration of Heavy Metals in the Flooded Soil Profile - Model Experiment
2014
Soils that have been exposed to fl ood waters can be heavily polluted by inorganic and organic compounds. They are mainly compounds which appear in dissolved or suspended form fl owing together with heavily laden fl oodwater, as well as compounds created as a result of reactions in the soil profi le, mostly due to anaerobic transformation of organic matter. Heavy metals brought with fl ood waters are absorbed by the soil and also washed out from fl ood sediments by precipitation when the fl ood recedes. This paper presents the results of research on the effects of fertilization with ash from incineration or pyrolysis of biomass on the migration process of heavy metals (Zn, Cu, Cr, Ni, Pb, C…
Validation of Methylmercury Determinations in Aquatic Systems by Alkyl Derivatization Methods for GC Analysis Using ICP-IDMS
2001
Isotope dilution mass spectrometry (IDMS), using an inductively coupled plasma quadrupole mass spectrometer (ICPMS) and a species-specific methylmercury spike was applied to validate the commonly used GC method for methylmercury (MeHg+) determination, which is based on the formation of volatile methylethylmercury by derivatization with NaBEt4. The spike compound, Me201Hg+, was synthesized by reaction of 201Hg-enriched mercury chloride with methylcobalamin. By analyzing different environmental aquatic samples, it was found that in most cases, transformation of MeHg+ into elemental mercury (Hg0) took place. From investigations of synthetic solutions, it could be followed that halide ions are …
Smart Cities Atlas
2014
Nuovi e affascinanti esempi sull’innovazione nelle città che provengono dal mondo reale. Ogni parte del mondo industrializzato ha un caso di smart city da mostrare: città e reti di città saranno il punto di contatto delle più importanti iniziative economiche e finanziarie nel prossimo futuro. Il catalogo ampio di città analizzato da una sintetica rappresentazione delle misure applicate da alcune di esse negli ultimi dieci anni nel mondo. Essere una smart city è una sfida difficile da raggiungere, sia per città progettate ex novo come Masdar o Caofedian sia per quelle che hanno una lunga storia dietro, come le città europee. New and fascinating examples about innovation in cities come from t…
HOMEMADE SLOW-ACTION FERTILIZERS, AS AN ECONOMIC SOLUTION FOR ORGANIC FOOD PRODUCTION
2017
Organic plant cultivation, especially those intended for human consumption, poses new requirements for gardening. It is recommended to use organic slow-action fertilizers, which provide doses of nutrients essential for plants for a long time. Particularly valuable fertilizers are those that arise within the household, due to their high quality and the absence of costs associated with their purchase and transport. Organic matter contained in the food industry waste or arising in households, in the absence of contamination by other types of waste, can be used for self-production of organic fertilizer. The paper presents the results of testing organic fertilizers, which you can make yourself, …
Timor Wschodni - 20 lat nadziei i rozczarowań
2019
Repenser l’intégration républicaine à l’aune de l’interculturalité
2018
Cet article analyse le dispositif français d’intégration républicaine et souligne le potentiel des apports d’une approche interculturelle pour accompagner et informer la réflexion en cours autour de la réforme de la politique publique d’intégration. Les entreprises forment leurs cadres expatriés pour réduire le choc culturel, alors que des dizaines de milliers d’autres migrants, souvent en marge de la société, ne bénéficient pas d’actions semblables de sensibilisation culturelle. À la lumière du rapport Taché sur l’intégration des migrants (février 2018), différents paradigmes – fondés sur les valeurs, socioconstructionnistes, critiques – sont exposés pour éclairer les logiques actuelles du…
Repenser la communication sociale
2015
International audience; Au-delà de l'horreur de la barbarie, au-delà des larmes, les morts des 7 et 9 janvier 2015 nous amènent à collectivement nous interroger : et maintenant ? Les contours du rôle de l'enseignant-chercheur dans sa société ne font pas l'unanimité ; nos disciplines peuvent cependant contribuer à la réflexion et au débat publics. La théorie des cinq filtres en oeuvre dans les médias de Noam Chomsky, nous indique par exemple que la désignation d'un ennemi commun est une tentation facile pour la plupart des médias actuels, et dans le même temps soulève des doutes et donc suscite des polémiques. Les programmes de recherche-action d'éducation à l'image et aux médias lancés par …
I Luoghi e i media. Prevenire il suicidio fra mondo interno e comunità
2009
How critical thinking should be at the heart of digital interactions?
2018
In this paper, we explore how to teach critical thinking in the digital age, in order to promote the autonomy of practitioners. An interaction theory is proposed to identify the constraints that structure digital creativity. This model helps to design a critical pedagogy, linking without opposing a procedural approach to a reflective approach. The article presents an implementation of this model in a writing course on a social network. The study of students' activity logs shows the presence of forms of objectivity and reflexivity, reflecting the development of critical thinking. This approach offers a way to develop critical thinking not from the outside, in an argumentation or media analys…
El dinamismo conversacional: subsunción y feed-back. Carácter acumulativo de los elementos conversacionales
1992
Los estudiosos de la conversación coinciden en señalar el carácter especial de la relación que une a dos hablantes en un encuentro verbal. Nuestro objetivo en el presente estudio es profundizar un poco más en tales relaciones. Analizaremos, pues, algunos de los rasgos fundamentales a los que se subordina una toma de turno conversacional, como la relación que vincula al hablante y los oyentes, los canales de retroalimentación, la construcción colaborativa de los enunciados o la progresión acumulativa que caracteriza la información. Englobaremos todas estas cuestiones bajo el nombre genérico de dinamismo conversacional.