1,721,053 research outputs found
L'impianto di biostabilizzazione di Bari: correlazione tra chimismo dell'effluente del biofiltro ed unità odorigene
No full textMadri costituenti
No full textLa Costituente è la prima Assemblea elettiva nazionale declinata anche al femminile e la Costituzione è la prima norma alla cui formazione hanno contribuito anche delle donne. Ma la Costituzione non è una norma qualsiasi, è la legge fondamentale dell’ordinamento. A rendere ancora più importante e speciale la sua genesi è, allora, proprio lo ‘stretto’ legame che unisce due fondamentali ‘protagoniste’ della Repubblica: le donne e la Costituzione. Soffermarsi sulle origini della Costituzione diviene essenziale per comprenderne appieno alcuni significati: il potere costituente – che per la prima volta nella storia del nostro Paese è stato esercitato dal popolo – si è espresso anche attraverso ‘voci’ femminili. La Costituzione è frutto anche di scelte di genere. Il 2 giugno 1946 è, per questa ragione, anche – e soprattutto – un punto di inizio. È l’avvio di un ordinamento che nasce paritario e come tale deve svilupparsi. È l’apertura di una nuova pagina politica, culturale e sociale che – proprio sul piano dell’eguaglianza di genere – implicherà un profondo cambiamento nella collettività, di pensiero e di azione. Grazie ai principi sanciti dalla Carta fondamentale e all’impegno di tante donne, dentro e fuori le sedi istituzionali, questa pagina è stata in parte scritta. C’è però ancora tanto da fare per completare il disegno costituzionale di eguaglianza nella diversità di genere. Persistono ancora, infatti, tracce evidenti della disparità uomo-donna, radicate in stereotipi che continuano a condizionare la caratterizzazione al ‘maschile’ di interi settori della vita sociale, economica e politica dello Stato
L'impianto di biostabilizzazione di Bari: correlazione tra chimismo dell'effluente del biofiltro ed unità odorigene
No full textImpianto di biostabilizzazione descrizione tecnic
Assessment of the fate of Escherichia Coli in different stages of wastewater treatment plants
No full textSeven full scale wastewater treatment plants were investigated to highlight the effectiveness of each treatment stage on removing E.coli. The primary sedimentation achieved an average E.coli removal efficiency of 30.5% which was much lower than the suspended solids (58%), thus revealing the absence of a linear relationship between the two parameters. Biological processes proved to be very important in the removal of E.coli through adsorption inside the sludge flocs and complex decay (mortality). In biological processes with a long retention time, such as activated sludge denitrification-nitrification, the decay was very important, whereas in the more traditional activated sludge process, without nitrification, the contribution of adsorption and mortality was quite balanced. Overall, the mechanical-biological treatment achieved a removal efficiency of 91.8-96.5% depending on the process. Additional removal can be achieved by disinfection. The effectiveness of E.coli removal with sodium hypochlorite was strictly depended on the product of residual chlorine (CR) with the contact time (t). The experimental curve fitted the Collins model well, with a standard deviation of less than 7%
Critical Analysis of the GreenMetric World University Ranking System: The Issue of Comparability
Full text linkThe Universitas Indonesia GreenMetric World Ranking is the most widely adopted system nowadays to rank worldwide universities' sustainability. The number of participating universities has consistently increased throughout the last decade. An in-depth analysis of this ranking system is made to assess how sustainability in universities is measured through specific indicators. Specifically, based on expert knowledge, common logic and the scientific literature, these indicators are assessed with respect to whether they can be used to fairly quantify and rank worldwide universities' sustainability development. Some indicators proposed by the ranking system, such as the number of renewable energy sources on campus and the number of various types of programs for sustainable development, were found to be unable to measure any sustainability development effectively and fairly. Many others, such as the opted sewage disposal modality, the percentage of university budget for sustainability efforts and the ratio of sustainability research funding to total research funding, were found to need adjustment to account for context-specific factors such as availability of renewable energy sources, weather, landscape, original construction and the cultural habits of the enrolled people. Taking into account these considerations, a fairer evaluation and comparison of universities' sustainability could be achieved which provides universities with information on how to effectively improve their sustainability
Incineration of Pre-Treated Municipal Solid Waste (MSW) for Energy Co-Generation in a Non-Densely Populated Area
No full textStrategic environmental assessment: a critical review of procedural soundness and reliability
No full textThe Strategic Environmental Assessment (SEA) is both a technical and administrative procedure with (mandatory) extensive application throughout Europe, holding a primary role in sustainable territorial development. Objectives of the SEA process are to: provide a high level of protection for the environment, and promote sustainability of development by contributing to the integration of appropriate environmental considerations in the adoption and implementation of specific plans and programs. In general, results of SEA application are quite positive, but some aspects may still be subject to a constructive critique, with considerable space for procedural improvement. Purpose of this work is to analyze a few case studies, which refer to the situation in Italy and, specifically, in the Lombardy Region, after a significantly extended period of SEA application, and evaluate their outcomes, suggesting possible ameliorations. Lombardy makes a good benchmark for examination, being a complex territory, characterized by the highest concentrations of population, industrial activities, and economic interests in Italy. Case studies' evaluation reveals some critical issues that may have a negative influence on the correct application of the SEA process (and not just in Italy, as these considerations can be extended at the international level), and consequently on the resulting governance of the territory, and on the determination of foreseen effects related to development goals. Among critical issues, frequent oversight of important aspects concerning sustainability, incorrect definition of players and stakeholders, variations and differences of the applied techniques, debatable role of both the public administration and the public, varying costs of the procedure, to state a few, could be mentioned. Furthermore, a critical need is the definition of specific standards and parameters in the presence of activities that may present risks of relevant accidents
Influence of key parameters on the removal efficiency of air pollutants by a biotrickling filter
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