1,721,223 research outputs found
La regolazione dell'intelligenza artificiale: Stati Uniti e Unione europea alla ricerca di un equilibrio
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Economic and environmental analysis of a Steam Assisted Gravity Drainage (SAGD) facility for oil recovery from Canadian oil sands
No full textAs conventional oil production becomes limited, transportation fuels are being produced from other unconventional fossil resources such as oil sands. Oil sands are a combination of clay, sand, water and bitumen. Vast quantities of oil sands resources have been found worldwide. The largest known reservoir of oil sands in the world is located in the province of Alberta (Canada). Several techniques for the extrac- tion of the oil from oil sands have been developed in recent decades. Steam-Assisted Gravity Drainage (SAGD) is the most promising approach for recovering heavy and viscous oil resources. In SAGD, two clo- sely-spaced horizontal wells, one above the other, form a steam-injector and producer pair. The reservoir oil is heated by the injected steam and drains to the producer under the effect of gravity. First aim of this work is an economic optimization and evaluation of an hypothetical industrial scale facility (named LINK), located in Alberta. All data relating to LINK plant have been obtained from a review of the existing literature references or have been assumed. A Discounted Cash Flow Analysis (DCFA) of LINK plant has been performed. Costs of existing projects have been found in literature. The results show that the hypo- thetical plant LINK is a profitable investment and that the investment cost has a significant effect on the competitiveness of the LINK facility. Second purpose of the present work is an environmental analysis of the LINK plant: in order to evaluate GHG emissions from LINK plant, a LCA analysis has been carried out. The calculated emissions from oil sand production by SAGD technology have been compared with values relating to conventional crude oil pathways and to recovery and extraction of bitumen through surface mining from literature. The comparison demonstrated that SAGD is a promising technology also from an environmental point of view. An economic–environmental model for SAGD technology optimization has been developed
Innovative experimental-numerical method for quality control during sausages production
No full textA reliable assessment and control of water content in food products maximise product quality, safety, and shelf-life while minimising undesirable changes. Product considerations include sensitivity to flavour and related deteriorations, colour changes, vitamin loss, microbial activity, and amount of flavour available. Nevertheless the majority of food related processes, also at an industrial level, lack of suitable instrumentation and technologies for monitoring the humidity content and its variation during the different phases of the product life. This paper presents the implementation of an innovative numerical-experimental method for monitoring moisture content evolution during the ripening process of sausages
Development and test of a new fuzzy-QFD approach for characterizing customers rating of extra virgin olive oil
No full textThis research work focuses on the application of life-cycle assessment methodology to determine the carbon footprint of
different players involved in a supply chain of the textile sector. A case study of a product by a textile leader company was
carried out. This study demonstrates that, in the textile chain, the main contribution to the greenhouse effect is provided by
the electrical and thermal energy used and by the transportation (since different production phases are delocalised in a wide
range that goes from South Africa, Italy, Romania and all around the world, from the distribution centre to the stores).
The Monte Carlo analysis has been used in order to obtain, for each calculated impact, not only the average value but also the
distribution curve of the results characterised by uncertainty parameters. Moreover, a sensitivity analysis was carried out to
evaluate the impact of management choices such as:
† a change in the transportation modality, from aeroplane to boat;
† a combination of road and rail transportation; and
† a selection among suppliers that allows the firm to cut environmental impacts
Dynamic model for the economical evaluation of different technical solutions for reducing naval emissions
No full textThe new regulations for the prevention of marine Pollution are compelling the shipping industry to a change of strategy. This research
provides an economical analysis of the short term alternative options for ship
owners: to fit exhaust gas cleaning system on board using heavy fuel oil; to
burn marine gas oil or to switch from heavy fuel oil to low sulfur fuel entering
emissions controlled areas. An economic evaluation model of investments has been developed in order to compare the different solutions. Based on technical data of engines and operative vessel profiles, the model provides possible measurement tools to consider for the investment choice in the defined reference scenario. Different scenarios can be created by modifying investment conditions, environmental regulations and fuel price forecasts. The results of
the model application to three real vessels of different types encourage the ship owners to adopt the option of the seawater scrubber
Dynamic model for the economical evaluation of different technical solutions for reducing naval emissions
No full textI gas di scarico della combustione di olio combustibile pesante sono la principale fonte di emissioni dalle navi. Vengono valutate da un punto di vista tecnico ed economico soluzioni alternative di miglioramento
Supplier Satisfaction Survey as a management tool for reengineering the procurement process
No full textThe main innovation presented in this paper is the use of the Supplier Satisfaction Survey as a management tool for reengineering the procurement process. The Survey was elaborated after a deep analysis of the literature and case study related to the relationship with suppliers, and by interviewing internal personnel of the company such as: designers, buyers, warehousemen and quality responsible. The results were analysed in order to identify the main issues associated to the procurement process and for proposing appropriate corrective actions. The survey allowed also to improve the buyer-supplier relationship quality, by considering suppliers as key factors for establishing optimised procurement policies
Pensare il diritto pubblico
No full textmetodo e storia - il diritto amministrativo oltre lo Stato - problemi di attività e di giustizia - istituzioni e territori
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