Dissertations / Theses on the topic 'Regolari'
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Bernardini, Lucia. "Sui cinque corpi regolari." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/1779/.
Full textCornacchia, Isabel Maria. "Sistemi di coordinate regolari per la soluzione di Schwarzschild." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16343/.
Full textMOLINARI, MARIA CHIARA. "Decomposizioni in cicli pari di indice 3 nei line graph 4-regolari." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2022. http://hdl.handle.net/11380/1266028.
Full textAn even cycle decomposition (ECD) of an Eulerian graph is a partition of the edge-set into even cycles. We color the even cycles so as two cycles sharing at least one vertex receive distinct colors. If m is the minimum number of required colors, then we say that the even cycle decomposition has index m. The notion of an ECD of index m is connected to the palette index of a graph, a chromatic parameter describing a graph by the minimum number of palettes of its vertices. In particular, the possible values for the palette index of a 4-regular graph are 1, 3, 4 and 5. It is 3 if and only if the graph has an even 2-factor or an ECD of index 3. There exist infinite families of 4-regular graphs with an ECD of index 3 . As far as we know, no example of 4-regular graph whose edge set can be partitioned into even cycles and every ECDs has index larger than 3 is known. Motivated by the problem on the existence of such a 4-regular graph, we study ECDs in 4-regular line graphs of class 2 cubic graphs. For some of the infinite families of class 2 cubic graphs that are characterized by an arbitrary large oddness, we can find an ECD of index 3 in the corresponding line graph.
Andenna, Cristina. "Mortariensis ecclesia una congregazione di canonici regolari in Italia settentrionale tra XI e XII secolo." Berlin Münster Lit, 2000. http://deposit.d-nb.de/cgi-bin/dokserv?id=3012723&prov=M&dok_var=1&dok_ext=htm.
Full textAndenna, Cristina. "Mortariensis ecclesia : una congregazione di canonici regolari in Italia settentrionale tra XI e XII secolo /." Berlin ; Münster : Lit-Verl, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=3012723&prov=M&dokv̲ar=1&doke̲xt=htm.
Full textROSSI, ALICE. "Da minori a Ir/regolari. Pratiche della temporaneità tra giovani migranti Maghrebini (Torino, Italia; Khouribga, Marocco)." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2016. http://hdl.handle.net/10281/104078.
Full textFabbrizzi, Simone. "Regular and exact categories." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9161/.
Full textPollio, Bernardino <1976>. "Valutazione dell'efficacia delle procedure di Pushover convenzionali, modali ed adattive applicate a telai piani in c.a. regolari ed irregolari in elevazione." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/3102/1/POLLIO_BERNARDINO_TESI.pdf.
Full textPollio, Bernardino <1976>. "Valutazione dell'efficacia delle procedure di Pushover convenzionali, modali ed adattive applicate a telai piani in c.a. regolari ed irregolari in elevazione." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/3102/.
Full textCascioli, Chiara. "Varietà algebriche e Problema di Waring." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17406/.
Full textSeccia, Lisa. "Complessi di Koszul." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13551/.
Full textAMBROSIO, Maria Teresa. "Migrazioni economiche e sfruttamento del lavoro immigrato. Riflessioni a partire dal sistema di regolazione dei flussi di ingresso." Doctoral thesis, Università degli studi del Molise, 2021. http://hdl.handle.net/11695/105459.
Full textThis paper is aimed at investigating the link between the regulation of migration for work reasons (both supranational and national) and the exploitation of the work of non-EU immigrants. In particular, this doctoral thesis aims to highlight the main critical aspects of the current legislation on the entry and stay of foreign workers in Italy, and the consequent effects that affect the legal and working conditions of non-citizens. Certain programming systems for access to the territory and to work may determine, strengthen and / or encourage irregular entries as well as the multiple forms of labour exploitation. Given this assumption, the ultimate goal is to discuss alternative models of regulation to entrances for work reasons that can finally bring the phenomenon of economic migration back to an interpretation that is not only utilitarian but also broader protection of the individual as a person, worker, migrant. The doctoral thesis is structured in four chapters. The first, dedicated to the supranational discipline of the phenomenon of economic migration, explores international regulation, with focus on its fragmentary and incomplete character. The perspective of the European Union is then examined, highlighting the main factors that have limited its action in the context of legal migration for work reasons. The second chapter investigates the national regulation of economic migration, highlighting the numerous criticalities and distorting effects it determines in the immigrant labour market. The conclusion reached is that the moment of access to work represents the main place in which the distorting effects of national migration policies are manifested. These effects can be identified, on the one hand, in the circumvention of the regulations related to entry and residence of the foreigner, and, on the other, in the spread of phenomena of labour exploitation. This analysis is followed by in-depth studies on the characteristics of the immigrant labour market and on the impact of the Covid-19 pandemic on the working conditions of foreigners. The third chapter deals with the exploitation of the labour of migrants in Italy and Spain in a comparative key. It moves from the assumption that migration represents a factor that facilitates exploitation. In particular, the latter is closely linked to the supranational and national regulatory framework of migration for work purposes in relation to both irregularly and regularly residing immigrant workers. It must be considered that the greater degree of vulnerability of irregularly residing immigrant workers derives primarily from the lack of a residence permit. Attention is then devoted to the phenomenon of “caporalato” and the illicit intermediation and exploitation of labour (art. 603-bis of the Criminal Code), examining its conditions (exploitation of labour and taking advantage of the state of need) and “symptomatic indices”, also through the examination of the criminal justice that has been used so far. Finally, the fourth chapter aims to identify a series of elements that could constitute a new "model" of management of economic migration with important implications on the regularity, working conditions and the process of integration and social inclusion of foreigners in the country of destination.
CAMPEDEL, ELENA. "Hopf-Galois Structures and Skew Braces of order p^2q." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/378739.
Full textIn my thesis I enumerate the Hopf-Galois structures on Galois extensions of order p^2q. This will be done, using the gamma functions, by enumerating the regular subgroups of the holomorph of groups G of order p^2q. The last objects are also connected to skew braces, and I also provide the number of isomorphism classes of skew braces of size p^2q.
Secreti, Nicola. "Superfici minimali." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16864/.
Full textMagnavacchi, Andrea. "Esistenza della versione regolare della probabilità condizionata." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9429/.
Full textMANENTI, SUSANNA. "Neutrofili regolatori in neuroinfiammazione." Doctoral thesis, Università Vita-Salute San Raffaele, 2023. https://hdl.handle.net/20.500.11768/136976.
Full textThe onset and progression of neurological disorders have recently been linked to neutrophils. The neutrophil-to-lymphocyte ratio has been proposed as a clinical marker for both ischemic stroke and multiple sclerosis (MS). A few recent studies have revealed the existence of neutrophils with immunosuppressive and protective roles in EAE mice. However, the identification and characterization of neutrophils with regulatory functions in patients with MS are still lacking. Here, we identified a subpopulation of neutrophils characterized by the expression of the regulatory ligand PD-L2 (or CD273) in both MS patients and mice with EAE. PD-L2+ neutrophils are more frequent during the active stages of human MS as well as during experimental neuroinflammation in EAE mice. In this study, we extensively characterized the expression of surface markers typically associated with immunosuppressive functions in humans using multiparametric flow and mass cytometry. By performing ex vivo co-culture experiments, we confirmed the suppressive action of PD-L2+ neutrophils on T lymphocytes. We then described the kinetics of PD-L2+ neutrophils in EAE mice and hypothesized the preferential recruitment of this population in the CNS through the CXCR2 axis. Finally, using transgenic mutant mice, we aimed to deplete this neutrophil population to understand its relative importance in the context of the disease. Overall, we speculate that PD-L2 may be a suitable candidate for identifying regulatory neutrophils in both MS and EAE, paving the way for innovative approaches to noninvasive diagnosis and cell therapies.
Casamenti, Filippo. "Pavimentazione stradale: studio della regolarità." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amslaurea.unibo.it/406/.
Full textThoraval, Fañch <1974>. "Curarum dulce lenimen : du document musical au monument dévotionnel : Innocentius Dammonis et le Laude libro primo, Venezia, 1508." Doctoral thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/3055.
Full textThe Laude libro primo is a well known document which has retained scholarship's attention since the beginning of the last century. Quite exceptionally for a collection of polyphonic laude of that period, it contains a repertoire composed by a single musician, a regular canon whose belonging to the congregation of San Salvatore is the only biographical known fact. The compositions by Innocentius Dammonis have been considered a typical product of the musical devotional culture from north-eastern Italy that was intended either for the use of the congregation's members or for that of some venetian confraternities. The observation of the musical, theological and literary culture recorded in this document allows to shed a new light on these laude. The distinction between the responsibility of the printer and the author for its editorial conception makes it possible to understand by which means these laude were intended to be presented. An onomastical study has given some evidence that this musician, who lived in various monasteries of the congregation, was probably born in northern Europe. The Laude libro primo appears to be the product of an individual project, the congregation of San Salvatore being partly its intellectual background, rather than the expression of a local (venetian) tradition. This observation suggests another approach to the canon's compositional choices that are sometimes unusual in that kind of repertoire. They don't seem to be the result of the opposition art/popular music (or its corollary complex/simple) which is the most used analytical framework for the study of polyphonic laude. On the contrary, they appear to serve a devotional project carried out by a specialist (a cleric) who mixes moral arguments with bucolic and petrarchan references.
Le Laude libro primo est un document bien connu qui, depuis le début du siècle dernier, a fait l'objet de plusieurs études. Fait assez exceptionnel pour un recueil de laude polyphoniques de la période, il transmet un répertoire composé par un unique musicien, un chanoine régulier dont l'appartenance à la congrégation réformatrice de San Salvatore constitue la seule donnée biographique établie. Considérées comme caractéristiques de la culture musicale de dévotion du nord-est de l'Italie, les compositions d'Innocentius Dammonis ont successivement été perçues comme étant destinées à l'usage de ses coreligionnaires ou, au contraire, à celui des différentes confréries laïques vénitiennes. L'observation de la culture musicale, théologique et littéraire mise en mémoire dans ce document permet de le présenter sous une autre lumière. En distinguant la part de la conception éditoriale du livre imputable à l'imprimeur de celle due à l'auteur lui-même, il est possible d'envisager les moyens par lesquels ce dernier a pu vouloir le présenter au public. Il ressort d'une étude onomastique que le musicien est probablement un ultramontain, actif dans divers monastères de la congrégation dans laquelle il paraît avoir été très impliqué. Le Laude libro primo semble ainsi moins s'inscrire dans une tradition locale (vénitienne) que dans un projet individuel dont la congrégation de San Salvatore constitue, en partie, le cadre intellectuel. Ce constat suggère une autre approche des choix compositionnels effectués par le chanoine. Parfois atypiques pour ce type de répertoire, ceux-ci ne semblent pas procéder de l'opposition savant-populaire (ou de son corollaire complexe-simple) qui constitue la principale grille d'analyse des laude polyphoniques ; ils s'avèrent avant tout être au service d'un projet dévotionnel mené par un spécialiste (un clerc) qui mêle les arguments moraux aux références bucoliques et pétrarquiennes.
Ricciotti, Diego. "Regolarità holderiana e teorema di De Giorgi." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2354/.
Full textBilardi, Alessandra. "Regolatori di RNA e loro sequenze bersaglio." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425986.
Full textSachs, Giacomo. "Regolarità delle soluzioni viscose di operatori uniformemente ellittici." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13557/.
Full textDi, Vita Davide. "Le 7 equazioni che regolano la struttura stellare." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21657/.
Full textCarotti, Simone. "La fibrogenesi epatica: markers precoci e meccanismi regolatori." Doctoral thesis, La Sapienza, 2007. http://hdl.handle.net/11573/916941.
Full textANCESCHI, FRANCESCA. "Sull'equazione di Kolmogorov: teoria della regolarità ed applicazioni." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2021. http://hdl.handle.net/11380/1237620.
Full textThe Kolmogorov equation was firstly introduced in 1934 as a fundamental ingredient of a kinetic model for the study of the density of a system of N particles of gas in the phase space. Kolmogorov pointed out that, although the dimension of the phase space is 2N and the diffusion term acts on the velocity variable, whose dimension is N, the differential operator is strongly degenerate. Nevertheless, Kolmogorov exhibited the explicit expression of the fundamental solution of the operator and pointed out that it is a smooth function, in fact proving that the operator is hypoelliptic. Throughout this work, we are mainly concerned with degenerate Kolmogorov equations in divergence form, for which the regularity theory for classical solutions had widely been developed during the years. Chapter 1 of this work is devoted to a survey of results on the classical regularity theory for Kolmogorov operators with constant or continuous coefficients, which can nowadays be considered complete. In Chapter 2 we consider an application of the Kolmogorov equation in finance, where the Black and Scholes theory is applied to the pricing problem for Asian options. The price of the option is computed by solving a Cauchy problem, where the initial data represents the payoff of the option and the associated PDE is a Kolmogorov type equation with local Hölder continuous coefficients. The existence and uniqueness of the fundamental solution of the associated PDO are proved, alongside with a uniqueness result for the solution of the Cauchy problem, through a limiting procedure whose convergence is ensured by Schauder type estimates. Furthermore, in Chapter 3 we consider an application of the Kolmogorov equation to the kinetic theory. Specifically, we introduce a space inhomogeneous kinetic model associated to a nonlinear Kolmogorov-Fokker-Planck (KFP) operator and we investigate the classical theory for the associated Cauchy problem. The second part of my thesis is devoted to the regularity theory for weak solutions to the Kolmogorov equation with measurable coefficients, which is nowadays the main focus of the research community. It has been developed during the last decade, and the most advanced achievements in this framework have been established in the particular case of the KFP equation. In Chapter 4 we give proof of a geometric statement for the Harnack inequality for weak solutions to the KFP equation proved by Golse, Imbert, Mouhot and Vasseur in 2017, based on the concepts of Harnack chains and attainable set. As far as we are concerned with the more general Kolmogorov equation in divergence form, Chapter 5 is devoted to the extension of the Moser’s iterative procedure for weak solutions to the Kolmogorov equation under minimal integrability assumptions for the lower order coefficients in the non dilation invariant case.
Falcone, Gaudenzio. "Lo spettro di un anello e i suoi punti." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11439/.
Full textDESOGUS, ALESSIA. "Identificazione e analisi funzionale di fattori regolatori dei geni globinici." Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266529.
Full textCarmagnini, Alberto. "Simmetria e Informazione Genomica: la regola di Chargaff." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8706/.
Full textFerri, Silvia <1976>. "I linfociti T regolatori nella patologia epatica da HCV: dall'epatite cronica al trapianto." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2382/1/Ferri_Silvia_tesi.pdf.
Full textFerri, Silvia <1976>. "I linfociti T regolatori nella patologia epatica da HCV: dall'epatite cronica al trapianto." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2382/.
Full textIacobini, Valerio. "Commedia regolare e comici sregolati : Farsa, novella e "mercato" dello spettacolo tra Francia e Italia alle soglie del Rinascimento." Paris 8, 2008. http://octaviana.fr/document/140535136#?c=0&m=0&s=0&cv=0.
Full textLe problème principal pour l'étude des premiers contacts établis entre dramaturgies italienne et française au début de la Renaissance est la pénurie des sources. Grace à une reconstruction qui utilise plusieurs outils critiques (bibliographie matérielle, histoire de l'imprimerie, linguistique), cette étude voudrait surmonter les lacunes documentaires sur la performance à la fin du Moyen Âge, en reconstituant le réseau de relations culturelles entre les deux côtés des Alpes pour la période 1464-1548 dans le provinces du Nord de la France et à Lyon. Les théories sur la modularité de la farce et de la sottie, (genres dominants en France aux XVe et XVIe siècles) nous permettent d'établir un parallèle structural entre théâtre français et nouvelle italienne ; vérifié également dans la circulation des schémas dramatiques. Nous avons cherché sinon les traces précoces des comédiens, au moins celles des ouvriers du spectacle italien, premièrement en analysant la perméabilité culturelle italo-française pendant les guerres d'Italie (où le théâtre devient un moyen de propagande politique) ; deuxièmement en considérant les données sur la migration des Italiens en France ; finalement en comparant une étrange gravure contenue dans un livre d'heures avec trois répertoires gestuels. Dans ce contexte les cas singuliers d'auteurs comme Pierre Gringore et Giovan Giorgio Alione ne manquent pas. Il s'agit de données en partie déjà connues, mais jamais regroupées dans un discours critique unitaire, qui révèle une concordance d'intérêts entre lettres profanes italiennes et françaises, apte à construire un milieu capable de faire fructifier plus tard en France la Renaissance théâtrale italienne
The essential problem in studying contacts between Italian and French dramaturgy during the early Renaissance is the shortage of sources. By a reconstruction that uses several critical tools such as textual bibliography, history of press and linguistic studies, our thesis wants to transcend this scarcity. In this aim we thought back the net of cultural relationships on the two sides of the Alps between 1464 and 1548, particularly in Lyon and Paris. Theories about farcical modularity (farce and "sotties" are the most important "dramas" in France at our given time) identify a structural analogy in French theater and Italian novels; an analogy that can be also verified in plots' repetitiveness. We looked for traces of all kinds, sometimes not directly linked to the theater, like the presence in the court of Italian arts workers or the general cultural permeability between Italy and France during the Italian Wars, where the theater became an important propaganda device. Then, we analyzed migration data and finally we compared a strange woodcut in a devotional book with three gestural repertoires. In this context we didn't forget singular cases such as Pierre Gringore and Giovan Giorgio Alione. Maybe all these elements are known singularly, but they have never been dealt with together, and we think that in a coherent frame all these phenomenons reveal a common background that permitted the late settling of Italian theatrical Renaissance culture in France
Appella, Andrea. "Stabilità dei punti di equilibrio per sistemi di equazioni differenziali ordinarie." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Find full textDias, Ana Celina Cartaxo. "Ninho Jardim Condessa Marina Regoli Crespi: de 1936 a 1965." Universidade Presbiteriana Mackenzie, 2011. http://tede.mackenzie.br/jspui/handle/tede/1809.
Full textFundo Mackenzie de Pesquisa
This research deals with childhood education and investigates historical facts about attending Cotonifício Rodolfo Crespi workers´children made by "Ninho Jardim Condessa Marina Regoli Crespi" in the period from 1936 to 1965. In accordance to children protection theories, the Ninho was created with the objective of assisting and educating children from 0 to 7 years old. In this research, there is a debate about the female worker and specially the poor child and also the intention to support them while their parents were working. The initial investigation is based on the following aspects that were analyzed: the history of Ninho Jardim Condessa Marina Regoli Crespi Fundation; the relationship between Ninho Jardim and Cotonifício Rodolfo Crespi; the relationship between the institution and the population in the neighborhood of Mooca at that time; the people who were assisted by the institution; the way the assistance occurred and who were the responsible professionals; and which theoretical basis were used to provide the assistance.
Esta pesquisa trata da Educação Infantil, e busca investigar fatos da história do atendimento realizado pelo "Ninho Jardim Condessa Marina Regoli Crespi" aos filhos de operários do Cotonifício Rodolfo Crespi no período que vai de 1936 a 1965. Consoante com as teorias defensoras de proteção à infância, o Ninho foi criado com a finalidade de assistir e educar crianças de 0 a 7 anos. Nesse sentido há no corpo dessa pesquisa um debate que atinge a mulher operária e particularmente a criança pobre e a intenção de ampará-la enquanto seus pais trabalhavam. A investigação inicial se apoia nos seguintes aspectos que, no corpo do trabalho, foram analisados: a história da Fundação Ninho Jardim Condessa Marina Regoli Crespi; a relação do Ninho Jardim com o Cotonifício Rodolfo Crespi; a relação entre a instituição e a população da Mooca na época; quem era atendido nessa instituição; como era o atendimento e quais profissionais eram responsáveis por ele e em que base teórica se assentava o modelo de atendimento prestado.
ATRIPALDI, ALESSANDRA. "L'equo indennizzo nella regola di neutralizzazione prevista dalla direttiva OPA." Doctoral thesis, Università Bocconi, 2009. https://hdl.handle.net/11565/4053468.
Full textBarbieri, Giorgia <1993>. "Porte chiuse nel Vicino Oriente Antico: origine, sviluppo e applicazione di sistemi di sicurezza per regolare l’accesso agli spazi costruiti." Master's Degree Thesis, Università Ca' Foscari Venezia, 2020. http://hdl.handle.net/10579/16532.
Full textCattarina, Giovanni. "Funzioni di Schur, jeu de Tacquin e regola di Littlewood-Richardson." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6921/.
Full textVILARDO, ELISA. "Il microRNA-101 regola la proteina precursore del peptide β-amiloide." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1175.
Full textIn the pathogenesis of Alzheimer's disease, the expression level of the β-amyloid precursor protein (APP) plays a crucial role. It has been shown that mutations which increase APP protein synthesis, including the duplication of the locus of APP gene in certain families and trisomy of chromosome 21 (containing the APP gene), are sufficient to induce the early form of pathology. Therefore APP gene regulation has been extensively studied and both the promoter and 5’ and 3’ untranslated regions of mRNA have been charachterised. In recent years, the post-transcriptional mechanism of gene expression mediated by microRNAs has been discovered and investigated in several biological mechanisms and cell types. MicroRNAs have been shown to finely modulate the translation of proteins needed for the response to extracellular stimuli, and to define the spatial and temporal expression profiles of genes involved in neuronal development and differentiation. This experimental thesis focused on the question whether microRNAs are significantly involved in APP regulation. Through RNAi , Argonauta-2 gene, a key component of the ribonucleoprotein complex mediating the action of microRNAs, was silenced and APP protein increase was observed. Through bioinformatic analysis, microRNAs potentially interacting with APP have been identified and miR-101, which is enriched in the nervous system, was further investigated. Through expression analysis in rat hippocampus, from 8 days up to 6 months of age, it was observed an inverse correlation between miR-101 levels, which increase, and APP expression, which decreases over time. Using a reporter construct, the ability of miR-101 to inhibit the translation of APP through direct interaction with the messenger 3’UTR was demonstrated. Through inhibition of miR-101 in hippocampal primary cultures, a significant increase of endogenous APP protein was observed, confirming the miRNA regulatory function in the neuronal context. Instead miR-101 over-expression was effective in inducing APP repression at post-transcriptional level. It was also observed that stimulation of hippocampal neurons with IL-1, the first player of neuroinflammation and risk factor for Alzheimers Disease, induces coordinated modulation of APP and miR-101. These data demonstrate the repressive effect of miR-101 on APP under physiological conditions, while the alteration of this regulation is sufficient to induce an increase of APP protein, a condition which is associated to familial Alzheimer’s disease. In view of previous studies, in which miR-101 was shown to be down-regulated in the brains of sporadic cases of Alzheimer's disease, and of data obtained in this work, miR-101 may be a protective regulator of excessive production of β-amyloid precursor protein. The characterization of the signal transduction pathway activated by neuroinflammation, involving miR-101, and the relationship between this pathway and Alzheimer's disease might open a new perspective on the pathogenesis of this neurodegenerative disease.
PEROZZI, SILVIA. "Caratterizzazione dell'ACMS decarbossilasi e della chinolifato fosforibosiltrasferasi, enzimi regolatori della via metabolica "Triptofano-NAD+" nell'uomo." Doctoral thesis, Università Politecnica delle Marche, 2008. http://hdl.handle.net/11566/242601.
Full textBertozzi, Davide <1983>. "RNA non-codificanti indotti da danno al DNA regolano il fattore di trascrizione HIF-1α." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4746/1/bertozzi_davide_tesi.pdf.
Full textWhole transcriptome analyses revealed a broad transcription of non-coding RNAs (ncRNA), which functions are largely unknown. In this work it was shown that high doses of camptothecin (CPT), an antitumor inhibitor of Top1, increase the transcription of two ncRNA antisense 5 'and 3' (5'aHIF-1α and 3'aHIF-1α respectively) respect to the locus HIF-1α gene and decreased HIF-1α mRNA levels. Treatment effects are Top1-dependent, while are not dependent by the replication fork-mediated DNA damage or by DNA damage-activated checkpoints. The ncRNAs are activated in response to different stress types, the 5'aHIF-1α is about 10 kb length and it has both 5’CAP and polyadenylation (in literature it is known that the 3'aHIF-1α is a transcript of 1.7 kb, with no 5'CAP and no polyadenylation). Intracellular localization have shown that both ncRNAs are nuclear transcripts. In particular 5'aHIF-1α co-localizes with nuclear pore complex proteins, suggesting its possible role as a traffic-mediator of the nuclear membrane. It has been demonstrated also the transcription of the two ncRNAs in human kidney tumor tissues, highlighting it possible roles in cancer development. It is also known that low doses of CPT in hypoxia conditions decrease the HIF-1α protein levels. Having demonstrated on several cell lines that the two ncRNA above could not be implicated in this effect, we studied the entire human miRnoma variations under our experimental conditions. Thus we found that miR-X seems to be the molecular mediator of HIF-1α abatement after low doses CPT treatment in hypoxia conditions. Overall, these results suggest that HIF-1α transcription factor is finely regulated by non-coding RNA induced by DNA damage.
Bertozzi, Davide <1983>. "RNA non-codificanti indotti da danno al DNA regolano il fattore di trascrizione HIF-1α." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4746/.
Full textWhole transcriptome analyses revealed a broad transcription of non-coding RNAs (ncRNA), which functions are largely unknown. In this work it was shown that high doses of camptothecin (CPT), an antitumor inhibitor of Top1, increase the transcription of two ncRNA antisense 5 'and 3' (5'aHIF-1α and 3'aHIF-1α respectively) respect to the locus HIF-1α gene and decreased HIF-1α mRNA levels. Treatment effects are Top1-dependent, while are not dependent by the replication fork-mediated DNA damage or by DNA damage-activated checkpoints. The ncRNAs are activated in response to different stress types, the 5'aHIF-1α is about 10 kb length and it has both 5’CAP and polyadenylation (in literature it is known that the 3'aHIF-1α is a transcript of 1.7 kb, with no 5'CAP and no polyadenylation). Intracellular localization have shown that both ncRNAs are nuclear transcripts. In particular 5'aHIF-1α co-localizes with nuclear pore complex proteins, suggesting its possible role as a traffic-mediator of the nuclear membrane. It has been demonstrated also the transcription of the two ncRNAs in human kidney tumor tissues, highlighting it possible roles in cancer development. It is also known that low doses of CPT in hypoxia conditions decrease the HIF-1α protein levels. Having demonstrated on several cell lines that the two ncRNA above could not be implicated in this effect, we studied the entire human miRnoma variations under our experimental conditions. Thus we found that miR-X seems to be the molecular mediator of HIF-1α abatement after low doses CPT treatment in hypoxia conditions. Overall, these results suggest that HIF-1α transcription factor is finely regulated by non-coding RNA induced by DNA damage.
Romano, Chiara. "Meccanismi strutturali che regolano l'efficacia degli Inibitori delle Tirosin-Chinasi sull'attività catalitica di BCR-ABL." Doctoral thesis, Università di Catania, 2013. http://hdl.handle.net/10761/1389.
Full textCUTULI, Marco Alfio. "Modelli preclinici non convenzionali: vantaggi, limiti e applicabilità della proof of concept agli aspetti regolatori." Doctoral thesis, Università degli studi del Molise, 2021. http://hdl.handle.net/11695/100701.
Full textNew global regulations and greater ethical conscience lead to stronger controls on the use of vertebrates in pre-clinical studies. To overcome the significant costs and time required to obtain authorisation for mammalian studies, alternative animal models have been proposed in recent years to reduce the utilisation of vertebrates. Three non-conventional pre-clinical models were proposed and tested in the present work to evaluate in vivo activity and toxicity of chemical and biological substances. Promising results were obtained from the Lepidoptera Galleria mellonella, which proved to be a reliable pre-clinical model for screening natural antimicrobial substances, probiotics, and the host-parasite relationship. Encouraging data were also observed using the Coleoptera Tenebrio molitor as a potential model of intestinal inflammation. In addition, the snail species Limacus flavus was developed as an in vivo mucosal model to assess the irritant potential of chemicals. Although the proposed models have some limitations, they have proven to be effective for rapid and reproducible pre-clinical screening. These assays do not require sophisticated instruments and are aligned with current legislation on the protection of animals used for scientific purposes.
GAVIOLI, CHIARA. "Nuove prospettive in modelli di transizione di fase." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2021. http://hdl.handle.net/11380/1237395.
Full textPhase transitions occur in many relevant processes in physics, natural sciences, and engineering: almost every industrial product involves solidification at some stage. Examples include metal casting, steel annealing, crystal growth, thermal welding, freezing of soil, freezing and melting of the earth surface water, food conservation, and others. All of these processes are characterized by two basic phenomena: heat-diffusion and exchange of latent heat of phase transition. In this thesis, which consists of four distinct parts, we deal with phase transitions from different points of view. The first part, titled "Control and controllability of PDEs with hysteresis with an application in phase transition modeling", is a bridge between controllability of PDEs with hysteresis and phase transitions. Indeed, thanks to the special link between hysteresis operators and phase transitions, the controllability results that we prove can be applied to the so-called relaxed Stefan problem. This is an example of a basic model of phase transition, since it simply accounts for heat-diffusion and exchange of latent heat. More complicated models, which take into account also the mechanical aspects of the process, are considered in the second and in the third part. More precisely in the second part, titled "A viscoelastoplastic porous medium problem with phase transition", we derive and investigate a model for filtration in porous media which takes into account the effects of freezing and melting of water in the pores. The third part, whose title is "Fatigue and phase transition in an oscillating elastoplastic beam", is devoted to the derivation and the study of a model describing fatigue accumulation in an oscillating beam under the hypothesis that the material can partially recover by the effect of melting. Finally, in the fourth part, titled "Regularity for double-phase variational problems", we address the problem of the higher differentiability of solutions to the obstacle problem. In particular we deal with the case of non-standard growth conditions, which includes the so-called double-phase functionals. Such functionals describe the behavior of strongly anisotropic materials whose hardening properties drastically change with the point, hence they exhibit the most dramatic phase transition. The techniques here employed are different from those used in the rest of the thesis, since they rely on the direct methods pertaining to the regularity theory in the field of Calculus of Variations.
Giampieretti, Linda. "Superfici minime." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5167/.
Full textMANCINI, CHIARA, and CHIARA MANCINI. "Identificazione e caratterizzazione di una nuova famiglia di regolatori trascrizionali della biosintesi del NAD+ nei batteri." Doctoral thesis, Università Politecnica delle Marche, 2009. http://hdl.handle.net/11566/242343.
Full textOsnato, M. "Caratterizzazione molecolare di putativi fattori regolatori di Bkn3, un gene omeobox di orzo coinvolto nell'attività meristematica." Doctoral thesis, Università degli Studi di Milano, 2006. http://hdl.handle.net/2434/36945.
Full textCristalli, Camilla <1985>. "Valutazione dell'efficacia terapeutica di agenti che regolano il processo epigenetico di controllo dell'espressione genica nei sarcomi ossei." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/7886/1/Cristalli_Tesi%20con%20frontespizio_corretta_30-3-2017.pdf.
Full textIdentification of new therapeutic strategies against bone sarcomas continues to represent a primary goal for patients refractory to common chemotherapy treatments. Both osteosarcoma (OS) and Ewing’s sarcoma (EWS), the two most common primary bone tumors, derive from transformation of mesenchymal stem cells (MSCs) and/or osteoblastic progenitors in any phases of their differentiation. The loss of differentiation is a widespread biological feature of these tumors and has a strong prognostic significance. Thus, reverting epigenetic alterations to restore differentiation may be a therapeutic opportunity. Here we analyze the effects of two novel non-nucleoside DNMT inhibitors (DNMTi), MC 3353 and MC 3343, in comparison with DAC nucleoside inhibitor, on cell proliferation, survival and differentiation, in a representative panel of OS and EWS cell lines and xenografts. Both inhibitors determined a significant inhibition of DNMTs activity, but only MC 3343 treatment affected the expression of DNMTs. In vitro, MC 3343 was found to have specific effects on cell proliferation and differentiation, while MC 3353 induced a general toxic effect. MC 3343 altered cell cycle by inducing blockage of cells in G1 or G2/M phases and was able to significantly induce cell differentiation. In EWS, the treatment induced the expression of terminal neural differentiation markers, while in OS cells, increased both matrix mineralization and expression of genes specifically related to osteoblastogenesis. In vivo treatment of an OS patient derived xenograft (PDX) confirmed the anti-proliferative effect of MC 3343 together with the severe induction of osteoblastic differentiation. In conclusion, MC 3343 non-nucleoside DNMTi, was found to be specific and effective to reduce proliferation and induce differentiation either in EWS or in OS context and its combination with doxorubicin and cisplatin, two of the chemotherapeutic agents of choice in OS treatment, resulted synergic. This compound may thus be considered for differentiative therapy of bone sarcomas.
De, Canio Michele. "Caratterizzazione funzionale di GadX e GadW, regolatori trascrizionali del principale sistema di acido-resistenza in Escherichia coli." Doctoral thesis, La Sapienza, 2006. http://hdl.handle.net/11573/916785.
Full textImolesi, Casadei Luca. "Impiego di regolatori ripetitivi per il controllo di convertitori elettronici di potenza per l'interfacciamento con la rete elettrica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/8015/.
Full textMarcolongo, Moira. "FATTORI GENETICI DELLâOSPITE REGOLANO LA PROGRESSIONE DI FIBROSI DEL FEGATO IN PAZIENTI CON EPATITE CRONICA C (CHC)." Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3426986.
Full textLâinfezione cronica da virus dellâepatite C (HCV) rappresenta una delle principali cause di malattia cronica del fegato, cirrosi ed epatocarcinoma nei paesi occidentali1. La malattia del fegato presente nei portatori cronici HCV comprende diversi gradi dâinfiammazione e di progressione della fibrosi che, in circa il 30% dei casi è in grado di evolvere verso le forme avanzate . à noto che la velocità e il tasso di progressione della malattia epatica sono estremamente variabili e in base a questi parametri sono stati definiti diversi pattern di progressione: rapida, intermedia, lenta e non progressione con sviluppo di cirrosi che va da pochi anni a molti decenni2. Tuttavia, i meccanismi patogenetici alla base del danno epatico causato da HCV non sono ancora del tutto stati chiariti. Diversi studi, longitudinali e trasversali hanno evidenziato che nell'infezione cronica da HCV (CHC), i meccanismi alla base della patogenesi e del tasso di progressione della malattia epatica sono influenzati sia da fattori genetici che epigenetici. à emerso infatti che il fenotipo clinico di pazienti HCV non trattati è influenzato principalmente da parametri ambientali e dell'ospite mentre i fattori virali, quali genotipo e livelli di viremia, sembrano avere un ruolo marginale3-4. In particolare è stato dimostrato che l'alcol e le coinfezioni virali con i virus dell'epatite B (HBV) e dell' immunodeficienza umana (HIV-1) sono associate ad un' aumento della progressione di fibrosi e ad un maggiore sviluppo di complicanze dello stadio finale della malattia5-6. Fino a pochi anni fa, i parametri clinici e metabolici considerati maggiormente associati ad una rapida progressione della malattia del fegato erano lâetà al tempo dell'infezione7, il sesso maschile8, l'immunosoppressione, e la presenza di sindromi metaboliche e/o diabete di tipo II 9-10.Tuttavia, tale approccio è da considerarsi limitativo in quanto la fibrosi epatica sembra essere il risultato di un processo dinamico nel quale diversi fattori genetici interagiscono con fattori ambientali. Per questo motivo, negli ultimi anni l'attenzione si è focalizzata sullo studio di fattori genetici dell'ospite che sembrano avere un impatto notevole nella storia naturale delle malattie epatiche tra cui anche la CHC. In particolare è sorto uno speciale interesse per l'identificazione di geni dell'ospite coinvolti nel meccanismo della fibrogenesi. Sono stati pubblicati numerosi studi nei quali è evidenziata un'associazione di alcuni polimorfismi a singolo nucleotide (SNPs) con la progressione della fibrosi in pazienti con CHC. Tuttavia, i risultati ottenuti da questi studi sono risultati spesso contraddittori in quanto derivati da un ridotto numero di pazienti o non sono stati confermati in serie indipendenti. In uno studio di scansione genomica condotto da. Huang et al.13, gli autori hanno identificato una âsignatureâ di sette polimorfismi, definita âcirrhosis risk scoreâ (CRS), la quale è associata allo sviluppo di cirrosi in pazienti con CHC. Lo studio di Huang et al. indica che un alto CRS è associato alla presenza di cirrosi nei pazienti con CHC, tuttavia finâora non è stato condotto nessuno studio longitudinale per testare il valore prognostico del CRS nella progressione della fibrosi nel tempo. Scopo di questo progetto di dottorato è stato quello di valutare longitudinalmente i polimorfismi del CRS e altri ad essi correlati nella progressione della fibrosi epatica in pazienti con epatite cronica da HCV con fibrosi epatica lieve o minima alla prima biopsia. A tal scopo sono stati arruolati 271 pazienti che alla biopsia iniziale presentavano stadi di fibrosi F0 (n=104), F1 (n=101), o F2(n=59) e che, per tutto il periodo intercorso tra le due biopsie di almeno 60 mesi (media 108.5±), non erano stati trattati. Il DNA genomico di ogni paziente è stato isolato da sangue intero e sono stati simultaneamente amplificati, mediante PCR multipla i sette polimorfismi del CRS più un marcatore per il sesso. Il genotipo di ogni paziente è stato individuato mediante una saggio di ligazione oligonucleotidica utilizzando la tecnologia Luminex ® TM system. Ogni profilo genetico emerso dallâanalisi è stato inserito in un software chiamato âRisk Calculatorâ il quale ha fornito per ogni paziente un indice di rischio per la cirrosi calcolato usando lâalgoritmo originale elaborato da Celera ( Huang et al). Durante il periodo di osservazione il 24.4% dei nostri pazienti non ha mostrato progressione istologica mentre il 75.6% è progredito di almeno uno stadio METAVIR. Di questi il 45% presenta una progressione di almeno due stadi METAVIR e il 10.3% una progressione maggiore di due stadi. Sono poi state confrontate le medie del CRS di pazienti progressori con quelle di pazienti non progressori evidenziando una differenza statisticamente significativa tra le due categorie (P=0.005). Questa differenza diventa maggiormente significativa paragonando pazienti progressori e non progressori aventi stadio F0 alla prima biopsia (P=0.002). Ciò nonostante la media del CRS non è associata con il grado di progressione della fibrosi. Dai nostri dati è emerso che il rischio relativo di sviluppare fibrosi cresce con lâaumentare del valore del CRS. Tuttavia questa associazione è significativa nei maschi ma non nelle femmine e diventa molto evidente nei pazienti maschi con F0 alla prima biopsia e alto CRS (odds ratio 16.5 intervallo di confidenza al 95% 1.6 â 166; P=0.02). Lâanalisi multivariata comprendente altri fattori come età al tempo dellâinfezione, età alla prima biopsia, sesso, intervallo tra le due biopsie, conferma lâassociazione significativa dellâindice CRS con la progressione della fibrosi. Inoltre, il valore predittivo del test è stato valutato e confermato anche in un gruppo di 49 pazienti con assunzione significativa di alcol giornaliera (> 30mg/ die). In conclusione i nostri dati mostrano come i fattori genetici che costituiscono il CRS sembrano poter predire la progressione della fibrosi in maschi con malattia epatica cronica iniziale o minima. Questo test quindi potrebbe essere usato come parametro per una valutazione predittiva della progressione di fibrosi ed essere utile al clinico per decidere il trattamento di un paziente.
Ferri, Paolo <1982>. "L'eccezione è la regola: ricerca espolorativa sul fenomeno del commissariamento nel settore culturale italiano." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4384/1/Ferri_Paolo_tesi.pdf.
Full textMy doctoral thesis topic concerns the intervention of the Italian central government when autonomous or semi-autonomous agencies are considered to be in 'emergency' or 'crisis' situations. The intervention is called 'commissariamento' and it entails the substitution of the ordinary management team. Moreover, emergencies entail extraordinary powers: special Commissioners can repeal part of the law in order to re-establish the order quickly. It is impossible to translate the word ‘commissariamento’ in English, an expression itself of diversity in administrative notions and vocabulary. In my explorative research, I'm focusing on the features of the intervention and on the results achieved by analyzing four case studies within the Italian cultural sector: two archeological areas (Napoli and Pompeii and Rome and Ostia) and two Opera Houses (Theatre Carlo Felice of Genoa and Arena of Verona).