08 TESI DI DOTTORATO

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AGN fraction and metallicity in clusters and field: the role of ram pressure stripping

Active Galactic Nuclei (AGN) activity is one of the many processes involved in the so-called baryonic cycle, which broadly speaking is how the gas enters and exits the galaxy disks. Other mechanisms can affect the baryon cycle and some of them depend on the environment in which galaxies reside. In clusters, the largest structures in the universe, the ram-pressure (RP) exerted by the hot plasma filling the intra-cluster medium (ICM) is certainly one of the most efficient processes affecting g...

Deciphering the role of respiration in bioenergetics and metabolism of plants using the model Physcomitrium patens

This thesis delves into the intricate relationship between mitochondrial respiration and plant metabolism, unraveling the pivotal role played by respiration in orchestrating metabolic processes. Over four chapters, it traces the historical progression of research in this field, from the early investigation of cytoplasmic male sterility to the contemporary utilization of genetic manipulation techniques in various plant models. These models have been instrumental in studying the physiological c...

Metodi di progettazione volumetrici ispirati alla natura per le tecnologie additive

Additive manufacturing (AM) technologies allow producing components layer upon layer in a completely different way with respect to the traditional techniques. This new approach enables unprecedented design freedom; indeed, objects with complex shapes inspired by nature, cellular solids and multiple materials can be produced. However, even though the manufacturing technologies are ready for producing such components, the literature emphasized that the available design tools are not appropriate...

Sol-gel inks for Additive Manufacturing of ceramic-based materials

Additive manufacturing processes have represented a milestone breakthrough over a broad range of technologies, enabling the fabrication of three-dimensional structures with utterly unique architectures over different length scales. Significant efforts have been devoted thus far to developing feedstock formulations for the fabrication of components with previously unattainable degrees of complexity over a wide range of materials, including ceramics, polymers and metals. Significant possibiliti...

Developing of a predictive model for non-ferrous casting alloys melt quality assessment

The PhD thesis investigates the crucial role of melt preparation in achieving high-quality aluminum casting. Casting defects, like cracks, voids, and porosities, are linked to melt quality, emphasizing the importance of meticulous preparation and casting parameter optimization. Current limitations in equipment hinder real-time assessment of melt quality, delaying checks and increasing time and energy investments. However, recent advancements in evaluating molten aluminum before casting offer ...

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