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Academic literature on the topic 'Cristallisation spontanée'
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Journal articles on the topic "Cristallisation spontanée"
W. GADE, Daniel. "Formation régionale et force dénominative des Bois-Francs au Québec." Cahiers de géographie du Québec 53, no. 148 (September 30, 2009): 7–25. http://dx.doi.org/10.7202/038139ar.
Full textDissertations / Theses on the topic "Cristallisation spontanée"
Guillotel-Nothmann, Christophe. "Asymétrie conditionnelle et asymétrie spontanée des progressions harmoniques. Le rôle des dissonances dans la cristallisation de la syntaxe harmonique tonale, c. 1530-1745." Thesis, Paris 4, 2013. http://www.theses.fr/2013PA040191/document.
Full textThe theory of harmonic vectors identifies the asymmetry of root progressions as one of the most outstanding characteristics of tonal harmonic language. This study aims at explaining this phenomenon by defining, from a theoretical and empirical point of view, the evolution of the relationship between contrapuntal constraints – including the treatment of dissonance – and the asymmetry of root progressions. The reading of German treaties from 1548 to 1745 helps to consider the phenomenon of dissonance in its technical and rhetorical aspects, establishes links with the theories of cadence and triad, and investigates the semiotic, cognitive, aesthetic and philosophical principles that underlie the origin of asymmetry. In order to determine the evolution of correlation and causality between the asymmetry of root progressions and the treatment of the dissonance from an empirical point of view, this study will exploit the analysis of the counterpoint and harmony of a corpus of madrigals from 1530-1638. This computer-assisted statistical analysis aims at examining, form a synchronic and diachronic point of view, the links between the overall asymmetry and the asymmetry associated with dissonances. It explores the relationship between verbal and musical semantics and syntax and investigates the bonds between the asymmetry of root progressions and other characteristics of the harmonic syntax, including harmonic rhythm, morphology of chords and phenomena of polarization
Guillotel-Nothmann, Christophe [Verfasser]. "Asymétrie conditionnelle et asymétrie spontanée des progressions harmoniques : Le rôle des dissonances dans la cristallisation de la syntaxe harmonique tonale, c. 1530-1745 / Christophe Guillotel-Nothmann." Norderstedt : PubliQation, 2017. http://d-nb.info/1143276698/34.
Full textLoranca, Cruz Luisa Fernanda. "Towards atomic crystallization in a hollow-core fiber." Electronic Thesis or Diss., Bordeaux, 2025. http://www.theses.fr/2025BORD0014.
Full textCold atoms are versatile quantum systems that enable the study of numerous quantum phenomena through precise tools and a high degree of control. Many experiments use these systems to explore spontaneous organization phenomena : systems that are initially disordered undergoing a phase transition to an ordered state due to interactions between their constituents. Most studies in this field rely on atoms confined in cavities. However, such cavities impose the light modes interacting with the atoms by their boundary conditions,there by predetermining the final geometry the system. Some experiments using ring cavities,which lack standing waves, offer an additional degree of freedom. In our experiment, we aim to go even further: the experiment we developed and describe in this thesis aims to induce the spontaneous crystallization of cold atoms in free space. Since the atoms are not in a cavity, they are considered as in free space, even if they are radially confined within the fiber’s core. The quasi 1D geometry increases the light-atom interaction, needed to implement the long range interatomic forces required to trigger the phase transition towards a crystal structure The cold atom crystal would be formed by long-range interactions induced by the light interacting with the atoms, simultaneously generating a light crystal with an associated superradiant pulse, that did not initially exist. Beyond a certain intensity threshold, these interactions would break the translational symmetry of the atomic cloud, with a spacing determined only by the characteristics of the cloud and the light, rather than by a standing wave.This type of experiment could contribute to the study of long-range interactions, the mechanisms of crystal formation, and could find applications in quantum simulations or magnetic field sensors. Finally, an important aspect is that the size of cold atom experiments generally remains too large to enable measurements outside vacuum chambers. In the case of atomic sensors,the measured forces often depend on the inverse of the distance from the observed fields. It is therefore crucial to work towards the miniaturization of cold atom experiments. Although other studies exploit HCFs, this experiment is unique in that it connects two vacuum chambersvia an HCF, with the goal of using cold atoms as magnetic field sensors between the chambers.This represents a step towards more compact devices for cold atom experiments. This project began with my doctoral research therefore, in this thesis, I present the development and construction of this new experiment, as well as the initial results concerning the cold atom source, the loading of atoms into the HCF, and a brief introduction to spontaneous organization phenomena
Echatoui, Nor-Saïd. "Etude des transferts thermiques lors des cristallisations spontanées ou induites de gouttelettes dispersées dans une émultion : cas de l'écoulement forcé." Pau, 1995. http://www.theses.fr/1995PAUU3006.
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