07 Tesi di Dottorato

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Prodotti recenti

Time-resolved elemental mapping and characterisation of storage proteins during soybean seeds development: a bottom-up strategy to increase protein content and quality

Soybean (Glycine max (L.) Merrill) is one of the most important crops worldwide and stands out as major a source of protein meal and vegetal oil for humans and animals. In this scenario, most of the proteins in soybean seeds are stowed to be used a nitrogen supply during germination and early seedling development processes. These storage proteins are mainly composed of legumin (glycinin) and vicilin (β-conglycinin), which mostly accumulate in the seed cotyledon’s cells. Nevertheless, the rela...

Recovering SU(2) gauge symmetry in cosmological implementations of loop quantum gravity

This thesis investigates the formal aspects of applying the quantisation techniques developed in Loop Quantum Gravity within a cosmological context. Its principal contribution is the proposal of a novel symmetry-reduction procedure that defines the cosmological sector of the Ashtekar-Barbero-Immirzi formulation of General Relativity for arbitrary cosmological models. Crucially, this method preserves the local SU(2) gauge symmetry, thereby enabling a quantisation scheme closely aligned with Lo...

The M-Layer construction: a diagrammatic framework for critical behavior in lattice models

This thesis presents and applies the M-layer construction, a recent diagrammatic method for studying the critical behavior of lattice models in finite dimensions. The construction provides a unified tool to compute correlation functions and critical exponents through a perturbative expansion in topological loops, whose leading order corresponds to the behavior on a Bethe lattice. The first application of the method is on well-known problems, such as the Ising model and the percolation problem...

A class of lightweight lenses and dielectric polarisation converters for high-gain wideband antennas

This PhD thesis addresses the characterisation of periodic layered dielectric structures, useful for the realisation of lightweight dielectric lenses and antennas designed to work at microwave frequency. Uniaxial anisotropic behaviours, related to the periodicity of thin layered structures, have been highlighted by a rigorous electromagnetic analysis which has been proven effective for the design of lightweight dielectric lenses useful for reducing the weight of radiating systems operati...

Analisi frattale e confronto del rimodellamento osseo in elementi dentari con osteolisi periapicale trattati endodonticamente con cementi bioceramici e tradizionali. Studio pilota retrospettivo

SCOPO DELLO STUDIO - Lo scopo del presente studio pilota retrospettivo monocentrico è valutare e confrontare la densità ossea peri-apicale (pre e post- trattamento) di elementi dentali che hanno subito un trattamento endodontico con cementi di nuova concezione (bioceraMici) e tradizionali. MATERIALI E METODI-La suddetta analisi verrà eseguita su radiografie endorali periapicali, con metodologia di analisi frattale (AF), processate con il programma open ImageJ®. Il campione comprende 44 pazie...

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