Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica - Tesi di Dottorato
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Questa collezione raccoglie le Tesi di Dottorato afferenti al Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica dell'Università della Calabria.
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Item Controllo ambientale. Campagne di monitoraggio atmosferico(2012-11-29) Gensini, Mario; De Cindio, Bruno; Perrone, Nicola; Sprovieri, FrancescaLa normativa ambientale riveste una importanza fondamentale per chi effettua ricerca in campo ambientale poiché, da un lato, definisce lo stato attuale ed i limiti vigenti; dall’altro, evidenzia proprio tali limiti e permette al ricercatore attento di intraprendere le necessarie azioni correttive affinché eventuali vuoti normativi possano essere colmati. L’analisi della normativa, lo studio delle tecniche analitiche per la determinazione degli inquinanti, l’analisi della strumentazione necessaria al monitoraggio dell’inquinamento atmosferico hanno mostrato che la ricerca in questo campo è molto vivace e si ha un continuo aggiornamento sia tecnico che normativo. I dati ambientali devono essere soprattutto dati di qualità ed implementare un processo sistemico di qualità, non può sicuramente essere un fatto episodico o di semplice attuazione. La ricerca di metodiche di analisi dei dati raccolti, di visualizzazione degli stessi dati sono punti fondamentali per una corretta comprensione delle dinamiche ambientali sia per il trasporto degli inquinanti che per la chimica degli stessiItem Controllo ambientale. Campagne di monitoraggio atmosferico(2012-11-29) Gensini, Mario; De Cindio, Bruno; Perrone, Nicola; Sprovieri, FrancescaItem Controllo ambientale. Campagne di monitoraggio atmosferico(2012-11-29) Gensini, Mario; De Cindio, Bruno; Perrone, Nicola; Sprovieri, FrancescaItem Controllo ambientale. Campagne di monitoraggio atmosferico(2012-11-29) Gensini, Mario; De Cindio, Bruno; Perrone, Nicola; Sprovieri, FrancescaItem Controllo ambientale. Campagne di monitoraggio atmosferico(2012-11-29) Gensini, Mario; De Cindio, Bruno; Perrone, Nicola; Sprovieri, FrancescaItem Optimization of pretreatment and enzymatic hydrolysis in bioethanol production from lignocellulosic biomass(2011-11-28) Verardi, Alessandra; Calabrò, Vincenza; De Bari, Isabella; De Cindio, BrunoItem Modeling of biotechnological and food-industry processes(2011) Saraceno, Alessandra; De Cindio, Bruno; Curcio, StefanoItem Rheology of highly-concentrated-in-oil emulsions(2010) Lupi, Francesca Romana; De Cindio, BrunoItem Chemical-physical characterization of complex systems: the case of pectins(2010-12-02) Checchetti, Andrea; De Cindio, BrunoIn industrial process, separation of the hydrolyzed pectin solution is performed by centrifugal and filtration technologies. The effect of water addition to the hydrolyzed citrus peels slurry on the separation efficiency was investigated, with the aim to improve pectin recovery. Different dilution ratios were tested and it was found that the pectin recovery increases when increasing water addition passing through a maximum value. No relevant effects on pH and pectin yield were found when increasing the contact time between water and hydrolyzed slurry, confirming that no further progress of hydrolysis or extraction processes is caused by the dilution. Therefore, the increase in pectin recovery can be attributed only to the water addition. Intrinsic viscosity properties of commercial pectins and their mixtures in dilute solutions were investigated by using capillary viscometer. Influence of degree of esterification on interaction polymer-solvent was studied in order to provide additional evidence that can be used to elucidate the mechanism of the intermolecular interaction between two pectins and to determine their compatibility in dilute solutions. The viscosity measurements of ternary system have been performed by two techniques: 1. The first was determined by putting the polymer A and B with certain weight ratio in a pure solvent 2. The second was determined by putting the polymer A (referred to as guest or probe polymer) in solution in which the polymer B (referred to as host or matrix polymer) is found at a constant concentration. This technique is called the method of polymer solvent. By using the first method, two compatibility criteria, based on specific viscosity data and derived for synthetic polymers, have been applied to pectin mixtures at different degree of esterification (DE). Data revealed that positive molecular interaction take place when pectin in solution have a different DM (i.e. HM/LM mixtures), whilst an incompatible behavior was found for similar pectin (i.e. both HM and LM). In the case of incompatible pairs of pectin, also the apparent molecular weight of ternary solution showed an increase with respect to the additive mixing rule, due to repulsive forces. On the contrary, due to attractive forces in case of compatible pectin pairs, the molecular weight is lower than the calculated average. By using the polymer-solvent method, the coefficient (KAB) of interaction between polymers has been calculated. The analyzing of this parameter KAB allowed to justify the results obtained.