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STUDIO DELLE MIGLIORI TECNICHE DISPONIBILI (BAT) PER LA DIGESTIONE ANAEROBICA DI RESIDUI ERBOSI
No full textIl Progetto di ricerca, in correlazione con le il Progetto europeo GR3 - grass to green gas, si è occupato di valutare la disponibilità del materiale erboso di scarto in Veneto e connetterlo al processo di digestione anaerobica creando una nuova filiera di produzione energia rinnovabile.The aim of the research project, in correlation with European Project GR3 - grass to green gas, was evaluating the grass availability in the Veneto region and connect it with the anaerobic digestor process producing a new supply chain of renowable energy
STUDIO DEI MECCANISMI DI SCAMBIO ELETTRONICO INTER-SPECIE NEL PROCESSO DI DIGESTIONE ANAEROBICA DI RIFIUTI ORGANICI
No full textAnaerobic digestion is one of the most attractive technologies for the treatment of industrial wastewaters and organic wastes, because it requires less energy investments and generates less excess sludge than other treatment approaches such as the activated sludge system (Mata-Alvarez et al., 2000). Complete conversion of organic matter to CO2 and CH4 via anaerobic digestion typically requires the syntrophic cooperation between acetogenic bacteria (also referred to as syntrophs) and methanogenic archaea. Indeed, catabolic reactions catalysed by acetogenic bacteria become energetically favorable only when produced reducing equivalents are efficiently scavenged by their syntrophic partners, namely the methanogenic archaea. Typically, this interspecies electron transfer (IET) process is reported to occur via diffusive transport of soluble electron carriers (e.g., hydrogen and formate) from the acetogens to the methanogens (Morris et al., 2013; Stams and Plugge, 2009). Low concentrations of electron carriers however result in slow diffusion rates, causing IET to be often the bottleneck in the methanogenic conversion of organic substrates. Recently, direct interspecies electron transfer (DIET), in which two microbial species exchange electrons via electric currents flowing through conductive solid conduits (e.g., magnetite nanoparticles) or microbial pili, has been proposed as an alternative strategy to interspecies H2/formate transfer, through which microbial species in a community share reducing equivalents to drive the methanogenic degradation of organic substartes (Kouzuma et al., 2015; Shrestha and Rotaru, 2014)
Un buon monitoraggio aumenta le rese in biogas.
No full textNell’ultimo quinquennio molti sono stati gli impianti di nuova costruzione ed avviamento: numeri alla mano sono quasi 1.000 gli impianti oggi operativi in Italia, per lo più autorizzati nel settore agricolo, soprattutto nell’area della pianura Padana. Ora che l’onda lunga delle nuove realizzazioni è scemata e sempre maggior coscienza viene acquisita da parte dei gestori degli impianti, è arrivato il tempo della piena “ottimizzazione” dell’investimento: ciò consiste nell’individuare una ricetta di alimentazione che sia in grado di fornire la massima resa energetica al minor costo della razione, previlegiando, laddove possibile, scarti e sottoprodotti.
alle colture dedicate.
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VLPM: a Tool to support BPR in Public Administration
No full textRepresenting a law defining some procedures by means of workflow diagrams has various advantages: it facilitates the understanding of the actual meaning of its text, it helps to build a shared vision between law-makers and officers of the public administration, and it provides an easier way to analyze and make public administration procedures more efficient. To keep the model understandable and maintainable, however, the need soon arises to keep traceability between the workflow diagrams and the laws from which the workflows are derived. Moreover - since the public administration processes are defined and regulated by laws - when the workflows are the target of a re-engineering activity, such traceability information becomes essential to identify what laws need to be changed to implement the new procedures. This paper presents VLPM (visual law process modeler). It is a tool that addresses some of the issues mentioned above and that we have used to model the laws regulating the introduction of an electronic election in Friuli Venezia Giulia, one of the autonomous regions of Italy. VLPM is built on top of the UML visual paradigm tool and it is freely available
Assessing Procedural Risks and Threats in e-Voting: Challenges and an Approach
No full textPerforming a good security analysis on the design of a system is an essential step in order to guarantee a reasonable level of protection. However, different attacks and threats may be carried out depending on the operational environment in which the system is used, i.e. the procedures that define how to operate the systems. We are interested in reasoning about the security of e-Voting procedures, namely on the risks and attacks that can be carried out during an election. Our focus is more on people and organizations than on systems and technologies. In this paper we describe some ongoing work that we are carrying out within the ProVotE project (a project sponsored by the Autonomous Province of Trento to switch to e-Voting for local elections) to analyze and (possibly) improve procedural security of electronic elections. To do so, we are providing models of the Italian electoral laws using the UML and we are developing a custom methodology for analyzing threats from the models. Our reasoning approach is based on asset mobility, asset values and existence of multiple instances
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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