Search results for "ambiente"
showing 10 items of 1727 documents
La ciudad contra la huerta. El conflicto del agua potable en Valencia (1926-1928)
2012
[EN] In Valencia, during the dictatorship of Primo de Rivera, the water users´ associations and the Ayuntamiento de Valencia underwent through a fierce conflict. The revision of the legal concession of water diverted from the Turia River for urban uses caused a strong reaction of the agricultural users, which promoted an unprecedented social mobilization and provoked the major’s resignation. The conflict between huerta and city is an interesting indicator of the politicization of Valencian society in the first third of the twentieth century and also of the power of symbolic capital to boost social action. The present article describes and analyzes this conflict, which shows the strong press…
International Legal Approaches to Waste Water Discharges
2002
Este capítulo se dedica al estudio de los distintos enfoques jurídicos seguidos en el Derecho Internacional del Medio Ambiente sobre las descargas de aguas residuales. Comienza analizando los enfoques jurídicos fragmentarios iniciales sobre las descargas de aguas residuales, principalmente en la Antártida y el Océano Austral, en algunos mares regionales (especialmente, el Mediterráneo) y el caso particular de las descargas de basuras procedentes de buques. No obstante, dedico la parte principal de este capítulo al enfoque global que sobre esta cuestión clave de la contaminación marina se inició en 1995, así como a su aplicación jurídica global, regional y nacional. This chapter is devoted t…
Preliminary data set to assess the performance of an outdoor membrane photobioreactor
2019
[EN] This data in brief (DIB) article is related to a Research article entitled 'Optimising an outdoor membrane photobioreactor for tertiary sewage treatment' [1]. Data related to the effect of substrate turbidity, the ammonium concentration at which the culture reaches nitrogen-deplete conditions and the microalgae growth rate under outdoor conditions is provided. Microalgae growth rates under different substrate turbidity were obtained to assess the reduction of the culture's light availability. Lab-scale experiments showed growth rates reductions of 22-44%. Respirometric tests were carried to know the limiting ammonium concentration in thismicroalgae-basedwastewater treatment system. Gro…
Voltammetric Analysis of Platinum in Environmental Matrices
2014
This article will summarize measurement data for Pt in different environmental samples obtained by the authors using a recently developed approach by voltammetric analysis. A fast accumulation of platinum and rhodium in the environmental and biological matrices has been observed in the last few years and concern has arisen about potential environmental and health risks. Voltammetry was used for the determination of Pt and Rh in airborne particulate collected in Palermo, Italy. Possible interferences by other environmental metals have also been evaluated. All samples show concentrations of Pt and Rh above average upper crust values. The Pt and Rh concentrations in particulate samples collect…
Agevolazioni su imposte ambientali ed aiuti di Stato
2009
Il modo in cui il rapporto tra aiuti di Stato ed imposizione fiscale acquista una particolare connotazione se riferito alla tutela ambientale.
La vite ad alberello e il giardino pantesco. Dinamiche globali di patrimonializzazione culturale ed economia locale
2021
In questo breve contributo proverò a introdurre il ruolo e la simbologia dell'albero nella società pantesca contemporanea in una prospettiva antropologica. Sintetizzando alcune fasi della mia ricerca sul campo sull'isola di Pantelleria, ho tentato di comprendere le dinamiche che hanno portato ai riconoscimenti Unesco della pratica della vite ad alberello e dei muretti a secco, così come al riconoscimento del giardino pantesco, e le conseguenze da questi determinate nella vita socio-economica dell’isola di Pantelleria e nell’immaginario collettivo della comunità locale e dei vari soggetti implicati. Applicando varie metodologie di indagine (interviste, osservazione partecipante, consultazion…
Uso de los museos para contribuir a superar visiones deformadas de la ciencia
2017
El trabajo se centra en la aportación de la educación no reglada, y más concretamente de los museos de ciencia y tecnología, al proceso de alfabetización científica. La enseñanza de las ciencias no facilita, en general, la familiarización de los estudiantes con las estrategias propias del trabajo científico. Y lo mismo sucede con la educación científica proporcionada por museos, medios de difusión, etc. Por ello las concepciones de los estudiantes y de la ciudadanía sobre la naturaleza de la ciencia y la actividad científica muestran, habitualmente, graves deformaciones que no solo dificultan un aprendizaje significativo sino que provocan el desinterés y rechazo hacia los estudios tecnocien…
The role of the Nature of Science in citizens' education
2007
O presente trabalho tem como propósito dar uma nova contribuição para o debate que se vem desenvolvendo, já faz algum tempo, em volta do papel da natureza da ciência na educação científica e, em particular, na formação de uma cidadania para a participação na tomada de decisões. This paper aims to contribute to the debate on the role of the nature of science and technology in science education, paying particular attention to preparing citizens to participate in decision making.
Catalytic cracking of n-alkane naphtha: The impact of olefin addition and active sites differentiation
2015
An extended dual kinetic model allows to fit the n-heptane cracking results working in a wide range of reaction conditions. The duality of the model is provided by the contribution of monomolecular and bimolecular cracking mechanisms. It takes into account the role played by the olefins formed on the global cracking or added within the feed. Furthermore by means of this model and the kinetic parameters obtained when cracking n-heptane on ZSM-5, it has been observed that, while some characterization techniques show a homogeneous zeolite surface from the point of view of the active sites, rigorous kinetic experiments point to the possibility that the reactant sees a heterogeneous surface with…
The hydrothermal system of the Domuyo volcanic complex (Argentina): A conceptual model based on new geochemical and isotopic evidences
2016
The Domuyo volcanic complex (Neuquén Province, Argentina) hosts one of the most promising geothermal systems of Patagonia, giving rise to thermal manifestations discharging hot and Cl−-rich fluids. This study reports a complete geochemical dataset of gas and water samples collected in three years (2013, 2014 and 2015) from the main fluid discharges of this area. The chemical and isotopic composition (δD-H2O and δ18O-H2O) of waters indicates that rainwater and snow melting are the primary recharge of a hydrothermal reservoir located at relative shallow depth (400–600 m) possibly connected to a second deeper (2–3 km) reservoir. Reactive magmatic gases are completely scrubbed by the hydrotherm…