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 29 for “"ingegneria chimica"”.
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Simbiosi industriale per la riduzione delle emissioni di CO2 e sua conversione biochimica in biomasse Algali produttrici di molecole bioattive per la prevenzione dei Tumori. Una sintesi tra economia circolare, salute e ambiente.
… per il rapido assorbimento e trasformazione biochimica della CO2 e, contemporaneamente, producono biomolecole attive. La grande richiesta di tali prodotti ha spinto la ricerca scientifica a studiarne sistemi produttivi sempre più specializzati al fine di migliorarne le condizioni di …
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Studio Sperimentale e Modellazione della Separazione di Proteine con Membrane di Affinità
Chromatography represents one of the most important and 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 …
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Mass transport in polymers
The study of mass transport in polymeric membranes has grown in importance due to its potential application in many processes 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 …
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Caratterizzazione di membrane metalliche e ionomeriche per applicazioni energetiche
The work of this thesis has been focused on the characterization of metallic membranes 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 …
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Characterization and modeling of the barrier properties in nanostructured systems
The object of the present study is the process of gas transport 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 …
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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
Nanofiltration (NF) 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 …
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Caratterizzazione di membrane inorganiche per la separazione di idrogeno da gas di reforming
The work of this thesis has been focused on the characterisation of inorganic membranes 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 …
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Processes and Materials for Space Exploration and Colonization
Nowadays, Earth-based space exploration is extraordinarily challenging and still expensive, but significant efforts are being made to develop new space launchers according to the most cutting edge technologies. Indeed, more affordable and cost-efficient techniques are needed to guarantee both …
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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
Over the past 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 …
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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
The main objectives of the Ph.D. thesis were: i. to characterize the growth of Coccomyxa melkonianii SCCA 048 for the production of high-value bio-products, such as lipids; ii. to investigate the growth and lipids production kinetics of the microalga, and the optimization of its biomass production …
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Polymeric nanocapsules for pharmaceutical applications
Polymeric nanoparticles can be used for drug 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 …
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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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Enhancing Thermal Efficiency Assessment in High-Altitude Footwear
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.
The aim of this study was to better define, by immunohistochemistry, the molecular markers 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 …
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Novel technologies for microalgae cultivation and subsequent lipid extraction
World economy is strictly linked to the availability of fossil 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 …
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