2 resultados para slightly enriched uranium

em AMS Tesi di Laurea - Alm@DL - Università di Bologna


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This dissertation aims at investigating differences in phraseological patterns in translated and interpreted language, on the basis of the intermodal corpus EPTIC_01_2011 and focusing on Italian and French. First of all, an overview is offered of the main studies and theories about corpus linguistics and collocations: the notion of corpus is defined and a typology (focusing on intermodal corpora) is presented, before moving on to the linguistic phenomenon of collocation and its investigation through corpus linguistics methods. Second, the general structure of EPTIC_01_2011 is presented, including the ways in which its texts have been assembled, edited through ad hoc conventions and enriched with metadata. The methodology proposed by Durrant and Schmitt (2009), slightly edited to fit the present study, has been used to extract and compare noun+adjective/adjective+noun bigrams from a quantitative point of view. A subset of these data have then been extracted and analysed manually. The results of the study are presented through graphs and examples, with an in-depth discussion of the bigrams considered. Lastly, the data collected are analysed and categorised in terms of shifts occurring in translation and in interpreting, potential causes are discussed and ideas for further research and for the development of the EPTIC corpus are sketched.

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The EBPR (Enhanced Biological Phosphorus Removal) is a type of secondary treatment in WWTPs (WasteWater Treatment Plants), quite largely used in full-scale plants worldwide. The phosphorus occurring in aquatic systems in high amounts can cause eutrophication and consequently the death of fauna and flora. A specific biomass is used in order to remove the phosphorus, the so-called PAOs (Polyphosphate Accumulating Organisms) that accumulate the phosphorus in form of polyphosphate in their cells. Some of these organisms, the so-called DPAO (Denitrifying Polyphosphate Accumulating Organisms) use as electron acceptor the nitrate or nitrite, contributing in this way also to the removal of these compounds from the wastewater, but there could be side reactions leading to the formation of nitrous oxides. The aim of this project was to simulate in laboratory scale a EBPR, acclimatizing and enriching the specialized biomass. Two bioreactors were operated as Sequencing Batch Reactors, one enriched in Accumulibacter, the other in Tetrasphaera (both PAOs): Tetrasphaera microorganisms are able to uptake aminoacids as carbon source, Accumulibacter uptake organic carbon (volatile fatty acids, VFA). In order to measure the removal of COD, phosphorus and nitrogen-derivate compounds, different analysis were performed: spectrophotometric measure of phosphorus, nitrate, nitrite and ammonia concentrations, TOC (Total Organic Carbon, measuring the carbon consumption), VFA via HPLC (High Performance Liquid Chromatography), total and volatile suspended solids following standard methods APHA, qualitative microorganism population via FISH (Fluorescence In Situ Hybridization). Batch test were also performed to monitor the NOx production. Both specialized populations accumulated as a result of SBR operations; however, Accumulibacter were found to uptake phosphates at higher extents. Both populations were able to remove efficiently nitrates and organic compounds occurring in the feeding. The experimental work was carried out at FCT of Universidade Nova de Lisboa (FCT-UNL) from February to July 2014.