Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"ING-IND/24 Principi di ingegneria chimica"”.
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Studio Sperimentale e Modellazione della Separazione di Proteine con Membrane di Affinità
… widely used unit operation in the biotechnology industry. However this technique suffers from several limitations such as high pressure drop, slow mass transfer through the diffusive pores and strong dependence of the binding capacity on flow rate. In this work, affinity membranes with improved …
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Mass transport in polymers
… such as separation of gases and vapors, packaging, controlled drug release. The diffusion of a low molecular weight species in a polymer is often accompanied by other phenomena like swelling, reactions, stresses, that have not been investigated in all their aspects yet. Furthermore, novel …
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Caratterizzazione di membrane metalliche e ionomeriche per applicazioni energetiche
… for the hydrogen purification from steam reforming process and also of perfluorosulphonic acid ionomeric (PFSI) membranes suitable as electrolytes in fuel cell applications. The experimental study of metallic membranes was divided in three sections: synthesis of palladium and silver palladium …
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Characterization and modeling of the barrier properties in nanostructured systems
… in nano-sized materials, i.e. systems having structural elements of the order of nanometers. The aim of this work is to advance the understanding of the gas transport mechanism in such materials, for which traditional models are not often suitable, by providing a correct interpretation of …
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Fenomeni di trasporto ed elettrostatici in membrane da Nanofiltrazione
Fenomeni di trasporto ed elettrostatici in membrane da Nanofiltrazione La capacità di predire le prestazioni delle membrane da nanofiltrazione è molto importante per il progetto e la gestione di processi di separazione a membrana. Tali prestazioni sono strettamente legate ai fenomeni di trasporto …
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Caratterizzazione di membrane da nanofiltrazione
… is a pressure-driven membrane process, intermediate between reverse osmosis and ultrafiltration. Commercially available polymeric membranes have been used in a wide range of applications, such as drinking, process industry and waste water treatment. For all the applications requiring high …
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Caratterizzazione di membrane inorganiche per la separazione di idrogeno da gas di reforming
… for the hydrogen purification from steam reforming gas. Composite membranes based on porous inorganic supports coated with palladium silver alloys and ceramic membranes have been analysed. A brief resume of theoretical laws governing transport of gases through dense and porous inorganic …
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Supercritical Water Gasification of Biomass
Finding new ways to produce renewable energy is among the most important and strategic challenges of technology nowadays. Biomass is one of the ideal candidates for reliable and abundant renewable energy production, since it is largely available, universally distributed and potentially CO2 neutral, …
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Development of Planning Support Systems in the European context
… decades, the implementation of several European Directives affected the European Member States normative framework influencing the traditional spatial planning process. The Directive 2001/42/EC on Strategic Environmental Assessment and the Directive 2007/2/EC on the development of INfrastructure …
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The role of alternative food networks in agricultural landscape conservation: some evidences from Italy and Spain
Drawing on the vast literature about Alternative Food Networks (AFNs) and by utilizing the concepts of social, spatial and ecological embeddedness, this thesis studies the driving forces boosting the AFN farmers’ behaviours in the Community of Madrid and the AFN and conventional farmers in …
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Biomass productivity enhancement and extraction of high values products of an extremophile microalga from SCCA culture collection
… Coccomyxa melkonianii SCCA 048, belonging to the Sardinian Culture Collection of Algae (SCCA), is a green extremophile microalga found in a mine drainage habitat and characterized by the ability to live in highly selective environments with extreme conditions, such as high …
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Polymeric nanocapsules for pharmaceutical applications
… release in cancer therapy. Nanoparticles can be divided into nanospheres and nanocapsules, accordingly to their structure. Nanospheres are constituted by just the polymer, while nanocapsules have an inner liquid core surrounded by a polymer layer. Drug can be incapsulated inside these structures. …
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Innovative antibacterial biocomposite films based on biomacromolecules and nanostructured zinc oxide
L'abstract è presente nell'allegato / the abstract is in the attachment
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Markers immunoistochimici delle cellule staminali/progenitrici nel rene umano in via di sviluppo.
… of renal stem/progenitor cells localized in the different niches of ten human preterm kidneys with gestational age ranging from 11 up to 25 weeks. Our data evidence the existence of multiple stem/progenitor pools in different zones of the human developing kidney that are characterized by …
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Novel technologies for microalgae cultivation and subsequent lipid extraction
… fuels, which nowadays meet the world’s growing energy demand. However, the intensive exploitation of fossil fuels as main source of energy is currently recognized to be not sustainable due to the continuous depletion of available resources as well as to their contribution to environmental …
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Production and activation of shear-responsive drug carriers for treating obstructed blood vessels: a coupled CFD-DEM approach
L'abstract è presente nell'allegato / the abstract is in the attachment
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Development of new processes for ISRU (In Situ Resource Utilization) and ISFR (In Situ Fabrication and Repair) applications on Moon and Mars
… process based on the occurrence of Self-propagating High temperature Synthesis (SHS) reactions potentially exploitable for the in-situ fabrication of construction materials in Lunar and Martian environments is described. The mixtures to be reacted by SHS are prepared taking advantage of the …
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Supercritical Technologies for the Valorization of Wine Industry By-Products
This study aim at the valorization of wine industry by products; particularly on the extraction and characterization of grape seeds oil using supercritical CO2 (SC-CO2) and polyphenols from grape skins and defatted grape seeds using subcritical water (SW) and then, modeling of the kinetics of …
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