Search results for " Principi"
showing 10 items of 398 documents
Ultra-fast-prototyping of PMMA structures for micro-engineering applications: Choosing the right material
2017
Machining of poly(methyl methacrylate) (PMMA) by laser has been extensively studied in engineering research for several applications including microfluidic manufacturing and rapid prototyping. However, very few investigations have taken into consideration the wide range of physico-chemical characteristics of commercially available PMMA that can often affect the quality of the laser-machined structures. These characteristics are often ignored, with many manufacturing publications focusing on a single source of PMMA. To understand the different bonding strengths and laser-cut qualities in the context of our ultra-fast prototyping technique, four types of PMMA have been examined. Molecular wei…
Tiesneša darbības regulējums ētikas un tiesību normas
2019
Bakalaura darba mērķis ir izpētīt tiesneša darbības regulējumu ētikas un tiesību normās. Darbā ir izvirzīti uzdevumi analizēt tiesu varu valsti, sīkāk apskatīt Latvijas tiesnešu ētikas kodeksa normas un tiesnešu darbības regulējumu tiesību normās. Tiesneši ir reālie tiesas varas īstenotāji valstī. No tiesnešu profesionalitātes un ētiskas normu izpratnes ir atkarīgi gan visas sabiedrības, gan katra indivīda tiesību un likumisko interešu aizsardzība. Būtiski ir radīt situāciju, kad sabiedrības uzticība tiesai ir tik liela, ka nerodas šaubas, ka Latvija ir tiesiska valsts. Tiesnesis ir amats, kas prasa augstas profesionālās zināšanas. Tikpat svarīgi tiesnešiem ir ievērot ētikas normas prasības…
Sul potere della Commissione europea di ritirare una proposta legislativa e sui suoi riflessi sugli equilibri istituzionali nel diritto dell'Unione e…
2015
L'articolo si propone di commentare la sentenza del 14 aprile 2015, nella causa C-409/13, con cui la Corte di Giustizia ha risolto un antico contrasto di tesi giuridiche (e politiche) tra il Consiglio dell’Unione europea e la Commissione europea, avente ad oggetto la questione se quest’ultima possa ritirare una proposta legislativa e, se sì, a quali condizioni e in quali casi. Respingendo il ricorso del Consiglio, la Corte ha risolto il conflitto a favore della Commissione, ma ha anche dato alcune indicazioni riguardo a requisiti di ordine sia procedurale che sostanziale che devono essere rispettati ai fini di un “legittimo” esercizio del potere di ritiro. L'articolo si propone anche di sot…
Costituzione italiana e pluralismo religioso
2015
Libertà religiosa e istruzione pubblica nella giurisprudenza europea dopo le sentenze sul crocifisso nelle scuole: una valutazione critica
2012
Analisi critica della giurisprudenza europea in materia
Functional Activation of Osteoclast Commitment in Chronic Lymphocytic Leukaemia: A Possible Role for RANK/RANKL Pathway
2017
AbstractSkeletal erosion has been found to represent an independent prognostic indicator in patients with advanced stages of chronic lymphocytic leukaemia (CLL). Whether this phenomenon also occurs in early CLL phases and its underlying mechanisms have yet to be fully elucidated. In this study, we prospectively enrolled 36 consecutive treatment-naïve patients to analyse skeletal structure and bone marrow distribution using a computational approach to PET/CT images. This evaluation was combined with the analysis of RANK/RANKL loop activation in the leukemic clone, given recent reports on its role in CLL progression. Bone erosion was particularly evident in long bone shafts, progressively inc…
Human nasoseptal chondrocytes maintain their differentiated phenotype on PLLA scaffolds produced by thermally induced phase separation and supplement…
2018
Damage of hyaline cartilage such as nasoseptal cartilage requires proper reconstruction, which remains challenging due to its low intrinsic repair capacity. Implantation of autologous chondrocytes in combination with a biomimetic biomaterial represents a promising strategy to support cartilage repair. Despite so far mostly tested for bone tissue engineering, bioactive glass (BG) could exert stimulatory effects on chondrogenesis. The aim of this work was to produce and characterize composite porous poly(L-lactide) (PLLA)/1393BG scaffolds via thermally induced phase separation (TIPS) technique and assess their effects on chondrogenesis of nasoseptal chondrocytes. The PLLA scaffolds without or…
Heterogeneous photocatalytic aqueous succinic acid formation from maleic acid reduction
2022
This study reports the anaerobic reduction of maleic acid to succinic acid in aqueous dispersion of different TiO2 based photocatalysts. Some home prepared and commercial solids containing different polymorphic phases of TiO2 and loaded with Pt and Ru were compared at different acidic pHs. The aim of the work was to verify the feasibility of the process and to determine the best samples and the optimal experimental conditions of the reaction. The best selectivity towards succinic acid was 23.2 % at 70 % of maleic acid conversion. Fumaric acid was also formed as another high added value compound, and its quantity was related to the experimental conditions and the photocatalyst used.
Chitosan-Coating Deposition via Galvanic Coupling
2019
A galvanic method to deposit chitosan coatings on stainless steel substrate is reported. Deposition of suitable coatings is desired to improve biocompatibility and corrosion resistance of metallic medical devices to be implanted in human body. In the present work, a thin hydrogel layer of chitosan was deposited on 304SS by a galvanic displacement reaction, which is advantageous first as it does not require external power supply. 304SS was immersed into an aqueous solution of chitosan/lactic acid and electrochemically coupled with magnesium acting as a sacrificial anode. SEM images showed the formation of a uniform layer of chitosan with a thickness controlled by deposition time. Corrosion t…
Calcium phosphate/polyvinyl acetate coatings on SS304 via galvanic co-deposition for orthopedic implant applications
2021
Abstract In this work, the galvanic deposition method is used to deposit coatings of brushite/hydroxyapatite/polyvinyl acetate on 304 stainless steel. Coatings are obtained at different temperatures and with different sacrificial anodes, consisting of a mixture of brushite and hydroxyapatite. Samples are aged in a simulated body fluid (SBF), where a complete conversion of brushite into hydroxyapatite with a simultaneous change in morphology and wettability occurred. The corrosion tests show that, compared with bare 304, the coating shifts Ecorr to anodic values and reduces icorr Ecorr, and icorr has different values at different aging times due to chemical interactions at the solid/liquid i…