Search results for " compost"
showing 10 items of 86 documents
Thermal kinetics for the energy valorisation of polylactide/sisal biocomposites
2018
[EN] The thermal stability and decomposition kinetics of PLA/sisal biocomposites was discussed to evaluate the suitability of their use in energy recovery processes such as pyrolysis and combustion. The influence of the addition of sisal up to 30%wt, the presence of coupling agent, and the atmosphere of operation, i.e. inert or oxidative was discussed by means of multi-rate linear non-isothermal thermogravimetric experiments. All biocomposites showed a mean high heating value of 15 MJ/kg indicating their suitability for energy recovery processes. The thermal requirements of PLA/sisal decomposition were assessed in terms of onset decomposition temperature and apparent activation energy. A mi…
Estudio del compostaje como técnica para la eliminación de contaminantes emergentes
2017
Desde hace unos años está surgiendo una nueva clase de contaminantes químicos utilizados por el hombre con distintas finalidades y denominados contaminantes emergentes, entre los cuales se incluyen los productos farmacéuticos. Todos estos compuestos se encuentran en las aguas residuales, y como las estaciones de depuración de aguas residuales no están acondicionadas para eliminarlos, acaban liberándose en el medio ambiente. La mayor acumulación de estos compuestos se produce en los lodos que son utilizados en agricultura y compostaje. De hecho, se han encontrado fármacos de uso humano y fungicidas de aplicación agrícola en aguas superficiales, suelos, biosólidos e incluso en agua potable. E…
Morir en femenino:la construcción simbólica en las exequias fúnebres de María Josefa Amalia de Sajonia
2021
Este artículo ofrece un análisis de la construcción simbólica de la reina María Josefa Amalia de Sajonia, tercera esposa de Fernando VII, a través de sus exequias fúnebres celebradas en España en 1829. A través de los textos impresos de las Relaciones, Oraciones fúnebres y textos poéticos nos adentramos en el lenguaje hiperbólico que en ellos se ofrecía de la difunta, mientras que las Descripciones de las fiestas y de los cenotafios o túmulos funerarios, así como los grabados que se conservan de estos nos plantean en qué medida el lenguaje artístico contribuyó a fabricar el concepto de la reina doméstica frente a la antigua imagen de la reina cortesana, en la crisis del Antiguo Régimen. En …
A proposito della collocazione dell'accento su certi composti di tipo bahuvrihi in vedico e in greco antico
2010
Una discussione sui composti non prescinde mai dalla sistemazione di essi proposta dalla grammatica indiana. Secondo la terminologia da questa introdotta i composti oggi detti possessivi erano chiamati bahuvrihi (es. hiranyaparna "dalle ali d'oro"). Il lavoro è dedicato a una specifica questione relativa alla collocazione dell'accento in certi composti del tipo bahuvrihi. Coincidenze nella collocazione dell'accento sui composti greci e indiani antichi erano già state notate da altri. Gli autori hanno provato a verificare se il fenomeno dell'accentazione del suffisso, riscontrabile nei bahuvrihi del Rig Veda, sia presente e in che termini nel greco antico.
Un afecto a la apostolica iglesia de señor Santiago, y zeloso de sus grandes prerrogativas, y lustre. Contra un papel anonimo, irreverente y opuesto …
Caplletra ornada Sign.: [A]2, B-Mmm2 Port. orlada Text amb postil·les marginals Reclams
Ultreya, suseya, Santiago!” Viaggio e spazialità ne La ballata dei pellegrini
2020
Per studiare dal punto di vista della geografia culturale alcuni aspetti del pellegrinaggio a Santiago de Compostela, in Spagna, il capitolo prende in considerazione un testo letterario, il romanzo autobiografico "La ballata dei pellegrini" della scrittrice francese Edith De La Héronnière, pubblicato per la prima volta nel 1993 e tradotto in italiano nel 2004. Il romanzo racconta l’esperienza del pellegrinaggio giacobeo effettuato dall’autrice negli anni Novanta assieme a tre compagni di viaggio partendo da un cammino francese. In particolare, attraverso l’analisi di alcune parti del testo, si indagano le modalità attraverso le quali la narrazione costruisce e descrive lo spazio fisico e si…
Effetti di intensità ed epoche di defogliazione sui parametri vegeto-produttivi e sulla qualità dell'uva della cv Nero d'Avola
2014
The trial was carried out over the seasons 2012-2013. A defoliation in prebloom, fruitset and veraison phenological stages was performed and several vegetative, productive and qualitative parameters were assessed. Prebloom and fruitset defoliation resulted in a strong vegetative regrowth and in a reduction of cluster compactness and berry weight. Sugar content at harvest showed significant differences depending on the meteorological condition of the season. Anthocyanins and flavonoids synthesis was favored by leaf removal practice in the coldest season; vice versa in the hottest season the highest bunch exposure in defoliated treatments determined extreme berry temperature and an intense de…
La sostenibilità delle destinazioni turistiche: la misurazione per indicatori
2013
Tourism often has had (and has) detrimental outcomes on destinations but the need and the rele-vance of a sustainable development of tourism was only recently recognised. Sustainable tour-ism is a quite recent concept, derived by the notion of sustainable development; it is usually re-lated to environmental issues and particularly to natural resources waste. Wider definitions are now emerging in the scientific community including, usually, social and economic dimensions together with the environmental one. Although, the intrinsic multidimensional nature of sustain-ability and the high number of stakeholders to be involved in its evaluation (e.g. policy makers, administrators, local resident…
Water absorption and hydrothermal performance of PHBV/sisal biocomposites
2014
[EN] The performance of biocomposites of poly(hydroxybutyrate-co-valerate) (PHBV) and sisal fibre subjected to hydrothermal tests at different temperatures above the glass transition of PHBV (TH ¿ 26, 36 and 46 C) was evaluated in this study. The influences of both the fibre content and presence of coupling agent were focused. The water absorption capability and water diffusion rate were considered for a statistical factorial analysis. Afterwards, the physico-chemical properties of water-saturated biocomposites were assessed by Fourier-Transform Infrared Analysis, Size Exclusion Chromatography, Differential Scanning Calorimetry and Scanning Electron Microscopy. It was found that the water d…
Prussian blue@MoS2 layer composites as highly efficient cathodes for sodium- and potassium-ion batteries
2018
Prussian blue (PB) represents a simple, economical, and eco‐friendly system as cathode material for sodium‐ion batteries (SIBs). However, structural problems usually worsen its experimental performance thus motivating the search for alternative synthetic strategies and the formation of composites that compensate these deficiencies. Herein, a straightforward approach for the preparation of PB/MoS2‐based nanocomposites is presented. MoS2 provides a 2D active support for the homogeneous nucleation of porous PB nanocrystals, which feature superior surface areas than those obtained by other methodologies, giving rise to a compact PB shell covering the full flake. The nanocomposite exhibits an ex…