Literatura científica selecionada sobre o tema "Excitation dynamique"
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Artigos de revistas sobre o assunto "Excitation dynamique"
Kanaev, A., V. Zafiropulos, M. Aït-Kaci, L. Museur, H. Nkwawo e M. C. Castex. "Etude des effets de pression sur la dynamique de relaxation du krypton après excitation sélective par un laser ultraviolet à 125 nm". Annales de Physique 17 (junho de 1992): 61–62. http://dx.doi.org/10.1051/anphys/1992012.
Texto completo da fonteBeurg, Maryline, Anne Cantereau e Dinu Georgescauld. "Dynamique et distribution spatiale du Ca2+libre intracytosolique et s intranucléaire par microscopie conventionnelle et confocale de fluorescence. Applications à 1′étude du couplage excitation-contraction des cellules musculaires striées". Archives Internationales de Physiologie, de Biochimie et de Biophysique 102, n.º 4 (janeiro de 1994): A17. http://dx.doi.org/10.3109/13813459109045386.
Texto completo da fonteBailly, J., M. R. Moro, T. Baubet, O. Taieb, A. Reyre e T. Belghouar. "Si les murs pouvaient parler… Contenance et enveloppes d’un lieu de soins ambulatoires en addictologie, étude qualitative par la photo-élicitation". European Psychiatry 29, S3 (novembro de 2014): 529. http://dx.doi.org/10.1016/j.eurpsy.2014.09.384.
Texto completo da fontePerez, Laetitia, e Laurent Autrique. "Un dispositif expérimental pour l’identification dans l’espace des fréquences". J3eA 21 (2022): 2040. http://dx.doi.org/10.1051/j3ea/20222040.
Texto completo da fonteMinko, Ignace Davy Mendoume, Pierre Bernard e Michel Fogli. "Identification de paramètres modaux de structures sous excitations dynamiques ambiantes". Revue Européenne de Génie Civil 9, n.º 1-2 (janeiro de 2005): 43–85. http://dx.doi.org/10.1080/17747120.2005.9692746.
Texto completo da fonteMendoume Minko, Ignace Davy, Pierre Bernards e Michel Fogli. "Identification de paramètres modaux de structures sous excitations dynamiques ambiantes". Revue européenne de génie civil 9, n.º 1-2 (28 de fevereiro de 2005): 43–85. http://dx.doi.org/10.3166/regc.9.43-85.
Texto completo da fonteAli Toudert, Nassima. "Fonctionnement psychique et équilibre psychosomatique chez des adultes atteints d'émophilie". Wisdom Journal For Studies & Research 2, n.º 5 (30 de setembro de 2022): 125–53. http://dx.doi.org/10.55165/wjfsar.v2i5.151.
Texto completo da fonteBitoun, Marc. "La myopathie centronucléaire liée au gène de la dynamine 2". médecine/sciences 39 (novembro de 2023): 6–10. http://dx.doi.org/10.1051/medsci/2023130.
Texto completo da fonteLoisel, Yoann. "Albert Cohen : voyage à la vie, à la mort, aux frontières du deuil et du tendre". Revue française de psychanalyse Vol. 88, n.º 3 (4 de junho de 2024): 57–67. http://dx.doi.org/10.3917/rfp.883.0057.
Texto completo da fonteFeng, Xin, Nian Qin Wang, Jing He, Qing Tao Wang e Xing Chen Jiang. "Application of Three-Dimensional Seismic Exploration Technology in the Mining Area of Loess Plateau". Applied Mechanics and Materials 709 (dezembro de 2014): 491–95. http://dx.doi.org/10.4028/www.scientific.net/amm.709.491.
Texto completo da fonteTeses / dissertações sobre o assunto "Excitation dynamique"
Halley, Clara. "La dynamique du traitement de l'excitation à l'adolescence : étude comparative de deux groupes d'âge : éclairage de la clinique projective". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCB206.
Texto completo da fonteAdolescence, marked by the emergence of puberty and the resurgence of sexual and aggressive drives, engages an internal work linked to psychic transformations and to the emergence of genital sexuality. Puberty can therefore intrude and cause trauma, hurting the subject who is more or less ready to bear the constraint to change induced by the pubertal process. In reference to the theoretical psychoanalytic model, we are interested in the study of the way in which adolescents are confronted with the influx of excitations, both external and internal, through a psychic treatment, by a work of mentalisation and symbolisation, or behavioural, or somatic, by the language of the body or the use of sensoriality. Indeed, whatever the mental capacity of the adolescent, a transient vulnerability of the mental apparatus is expected at this age of life. Our work thus proposes to explore the treatment of excitation in adolescence, evidenced by the study of the quality of several psychic movements: narcissism, protective-shield system, sensoriality and body language, as well as the processes of thought through the study of mentalisation and symbolisation. Our research object thus questions the quality of the treatment of excitation, through the putting into perspective of these four conceptual dimensions, likely to expose a better process approach of adolescence. On the basis of the main hypothesis that the processing of the excitation is multifactorial, the objective of this study is to determine how the articulation of the different concepts studied is able to account more sensibly for the treatment of excitation in adolescence. The projective methodology was chosen to test this hypothesis using grids referred to the above four dimensions. We met 17 teenagers aged 14 to 18 years old who passed the Rorschach and TAT. In a comparative approach, we studied the treatment of excitation with two age groups (14-16 years and 16-18 years). The results highlight differences in the treatment of adolescent arousal between the two age groups, with the younger ones preferring inhibition, the older age groups being more able to mentalise and symbolize the excitation. According to our general hypothesis, the projective analysis of the four dimensions of our work allows a finer approach for each adolescent to the specificities of the treatment of excitation
Lique, François. "Excitation collisionnelle de molécules d'intérêt astrophysique : théorie et interprétation d'observations". Paris 6, 2006. https://tel.archives-ouvertes.fr/tel-00172004.
Texto completo da fonteMabilia, Antoine. "Dynamique non-linéaire d'une soufflante en rotation". Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEC026.
Texto completo da fonteIn an aeronautics industry increasingly concerned by the environmental issues of our time, the mastery of dynamic behavior is of particular interest in terms of compliance with the environmental legislation. Indeed, this allows the structures to be designed as accurately as possible and therefore optimizes the total weight of the turbojet engine, while maintaining an exemplary level of reliability and safety as well as excellent performances. Fully integrated into this theme, the problematics of mistuning and nonlinear dynamics are eminently studied by present academic research, leading to the development of numerical methods that allow these two effects to be taken into account simultaneously. However, the representativity of these numerical methods with respect to the behavior of an actual engine can hardly be evaluated because of the few tests available in the literature. In addition to improving the understanding and prediction of bladed disks vibratory phenomena, this doctoral work has a twofold objective: experimental and numerical. The latter aimed at investigating the representativity of numerical models and methods, particularly developed at the LTDS on the problematics of mistuning and nonlinear dynamics, in comparison with rotating tests on a latest-generation industrial fan made of composite materials. For this purpose, the PHARE#1 test bench, developed over the last few years at the LTDS, allows the testing of bladed disks on a 1:1 scale, rotating in vacuum, while exciting the blades by means of piezoelectric actuators. The numerical methods used to simulate the fan are based on the concept of substructuring associated with a triple modal synthesis, thus allowing the consideration of mistuning within nonlinear problems of industrial size. Two case studies, both experimental and numerical, were conducted and analyzed during this doctoral work. These studies exploit an excitation by means of piezoelectric actuators whose modeling required the development of an electrical degrees of freedom condensation technique in order to benefit from the numerical methods of purely mechanical reduction and resolution. The first study has been carried out on a fan blade embedded in clamping jaws. This application made possible to focus on the nonlinear aspects of contact and friction at the dovetail by comparing the test results and the numerical simulations. The second study was performed on the composite bladed fan rotating in vacuum, thus achieving analyses and comparisons concerning the mistuning of the response and modal shapes coupled with nonlinear effects. The results obtained show a very good representativity of the numerical simulations with respect to the rotating tests in terms of mistuning, especially with respect to the decompositions in diameter components and the spatial distributions of the vibration amplitudes of the blades
Dubanet, Olivier. "Dynamique des interactions entre excitation et inhibition périsomatique dans le circuit hippocampique normal et épileptique in vivo". Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0259.
Texto completo da fonteThe hippocampus is a key structure for learning and memory. The function of this neuronal circuit is based on complex interactions between excitatory glutamatergic pyramidal cells and various types of inhibitory GABAergic interneurons. The precise roles fullfiled by interneuron subtypes is still unclear because it is challenging to study in vivo the inhibitory function of specific interneurons. Alterations of the synaptic interactions between pyramidal cells and interneurons in the hippocampus also underlie neurological pathologies such as epilepsy, neurodevelopmental diseases such as autism, or neurodegenerative diseases such as Alzheimer's disease. Among the different types of interneurons, those that express parvalbumin (PV) and project to pyramidal cell bodies (perisomatic inhibition) are particularly efficient in blocking action potential generation in their target cells. PV interneurons therefore play a central role in neuronal coding (by controlling which cell can fire or not) but also in the balance between global excitation and inhibition within the circuit, prevention runaway excitation between interconnected pyramidal cells and the generation of epileptic seizure. Functional perisomatic inhibition directly depends on Cl- electrochemical gradient, or the interaction between membrane potential and Cl- distribution across the membrane of the target neuron. However, these parameters change continuously during neuronal activity, and it has been shown that the Cl- gradient can be reversed, resulting in paradoxically excitatory GABAergic transmission. This phenomenon, which contributes to the physiological maturation of neuronal circuits during early development, is also considered as a major source of neuronal circuit dysfunction in various pathologies such as epilepsy, autism or schizophrenia. This field of research is therefore clinically relevant, and the research for drugs restoring a physiological Cl- gradient is very active. However, a direct assessment of the excitatory GABA hypothesis has been hindered by the technical difficulty of probing endogenous GABAergic synaptic function in vivo, and contradictory data in the literature call for a direct evaluation. During my PhD, using electrophysiological, opto- and pharmaco-genetic techniques, I have contributed to develop a new and sophisticated methodological approach to evaluate the perisomatic GABAergic transmission in the hippocampus, respecting the complexity of spontaneous neuronal activity dynamics in vivo. I have studied the functional role of perisomatic inhibition from PV interneurons in the adult hippocampal circuit, in physiological conditions and in two models of epileptic mice in which I was able to detect an excitatory GABAergic transmission in vivo. However, excitatory GABA was unlikely to participate in epileptogenesis because it was expressed only during the period of post-ictal silence after acute seizures, or in a potentially negligible minority of pyramidal cells one week post-status epilepticus during the latent period that precedes the emergence of chronic epilepsy, a stage during which I also demonstrated that the majority of CA3 pyramidal neurons were no longer under perisomatic inhibitory control. In addition to contribute to a better understanding of epileptogenesis, this approach constitutes an invaluable tool to quantify the actual in vivo efficacy of drugs designed to modulate Cl- homeostasis and restore physiological GABAergic inhibition, thereby meeting high clinical and therapeutical expectations
Ajili, Yosra. "Etude de la dynamique d'excitation ro-vibrationnelle de molécules d'intérêt astrophysique par collision avec He ou H2". Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1057/document.
Texto completo da fonteThe main goal of this work is to examine the capabilities of explicitly correlated coupled cluster (CCSD(T)-F12) methods for the mapping of multidimensional potential energy surfaces (PESs) at short, medium and long intermolecular ranges and therefore their use in the determination of accurate collisional data for a wide range of collision energies after dynamical computations. This is done through close comparisons of these PESs and corresponding data to those deduced using standard coupled cluster approaches with perturbative treatment of triple excitations (CCSD(T)). Therefore, we definitely establish that CCSD(T)-F12 in connection with the aug-cc-pVTZ basis set is the method of choice for the generation of such accurate PESs with strong reduction of computational cost (CPU and disk occupancy). As a benchmark, we treated the rotational excitation induced by collision of HCl/DCl-He and CO2 -CO2 van der Waals molecular systems, which are relevant for astrophysics and planetary atmospheres, respectively. For HCl-He and DCl-He, we closely compared the results deduced from PESs calculated with explicitly correlated and standard coupled cluster methods. These PESs were generated over the intermonomer degrees of freedom. Through these comparisons, we have shown that the use of explicitly correlated CCSD(T)-F12/aug-cc-pVTZ method overcomes the accuracy of the reference approach CCSD(T) associated with the complete basis set (CBS) with a very low computational cost (2 orders of magnitude less). The quality of the explicitly correlated potential surface was verified by cross sections and collision rate calculations. Then, we extended our findings to the CO2 -CO2 larger molecular systems. Hence, we generated four-dimentional (4D) PES of the carbon dioxide dimer (CO2 )2 using the CCSD(T)-F12 method and we compared it with other surfaces specially with that generated by the CCSD(T)/CBS and SAPT approaches. Again, we established the performance of explicitly correlated method to account fully for electron correlation. This was validated after dynamical calculations, where second virial coefficient, first spectral moment and vibrational energies of the CO2 dimer were computed and compared to previous experimental and theoretical data. In total, we recommend the use of CCSD(T)/aug-cc-pVTZ method for the investigation of weak interactions occurring between polyatomic-polyatomic systems for a wide range of applications
Renucci, Pierre. "Dynamique des polaritons de microcavité : cohérences optiques, cohérences de spin". Toulouse, INSA, 2001. http://www.theses.fr/2001ISAT0020.
Texto completo da fonteThis thesis is a contribution to the study, via ultrafast time-resolved optical spectroscopy, of optical and spin coherence phenomena involving polaritons in semiconductor microcavities. Coherent control of spin and population of polaritons is performed and we show that the scattering processes responsible for the loss of optical coherence are less efficient when the quasi-particule exhibits a strong photonic character. At low density, the analysis of spin coherences evidences a quenching of spin and alignment relaxation processes for negative detuning. At higher density, a strong non-linear mechanism is observed in the strong coupling regime. This effect is interpreted as stimulated parametric scattering, a coherent process which relies on a bosonic approach of interacting polaritons. Under transverse magnetic field, spin quantum beats are observed. Under resonant excitation, an electron-hole spin correlation is evidenced. To finish with, we show that the absolute value of the effective transverse electron Landé factor increases with the excitonic character of the quasi-particule
Lique, François. "Excitation collisionnelle de molécules d'intérèt astrophysique : théorie et interprétation d'observations". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2006. http://tel.archives-ouvertes.fr/tel-00172004.
Texto completo da fonteFrindi, Mohammed. "Etude dynamique des nonlinearites optiques de cucl en regime impulsionnel nanoseconde". Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13116.
Texto completo da fonteMathieu, Cécile. "Régime de conduction métallique des fluides coulombiens métal alcalin-halogénure alcalin : structure et dynamique". Lyon 1, 1987. http://www.theses.fr/1987LYO10143.
Texto completo da fonteAit, Younes Tarik. "Calcul de la réponse dynamique de grands domaines à une excitation acoustique par une méthode de sous domaines". Compiègne, 1999. http://www.theses.fr/1999COMP1248.
Texto completo da fonteLivros sobre o assunto "Excitation dynamique"
R, Tilley David, ed. Introduction to surface and superlattice excitations. 2a ed. Bristol: Institute of Physics Pub., 2005.
Encontre o texto completo da fonteR, Tilley David, ed. Introduction to surface and superlattice excitations. Cambridge [Cambridgeshire]: Cambridge University Press, 1989.
Encontre o texto completo da fonteCouturier, Hélène, e Robert J. Stoller. L'Excitation sexuelle : Dynamique de la vie érotique. Payot, 2000.
Encontre o texto completo da fonteCottam, Michael G., e D. R. Tilley. Introduction to Surface and Superlattice Excitations. Taylor & Francis Group, 2019.
Encontre o texto completo da fonteCottam, Michael G., e D. R. Tilley. Introduction to Surface and Superlattice Excitations. Taylor & Francis Group, 2019.
Encontre o texto completo da fonteCottam, Michael G., e David R. Tilley. Introduction to Surface and Superlattice Excitations. Cambridge University Press, 2011.
Encontre o texto completo da fonteCottam, Michael G., e David R. Tilley. Introduction to Surface and Superlattice Excitations. Cambridge University Press, 2009.
Encontre o texto completo da fonteCottam, Michael G., e D. R. Tilley. Introduction to Surface and Superlattice Excitations. Taylor & Francis Group, 2019.
Encontre o texto completo da fonteCottam, Michael G., e D. R. Tilley. Introduction to Surface and Superlattice Excitations. Taylor & Francis Group, 2019.
Encontre o texto completo da fonteTilley, D. R., e Michael G. Cottam. Introduction to Surface and Superlattice Excitations, Second Edition (Graduate Student Series in Physics). 2a ed. Taylor & Francis, 2004.
Encontre o texto completo da fonteTrabalhos de conferências sobre o assunto "Excitation dynamique"
Huaibang*, Zhang, Ding Wei, Chen Wujin, Zhao Diandong e Wu Cheng. "The study of dynamite source excitation technology based on near-source wave field". In Beijing 2014 International Geophysical Conference & Exposition, Beijing, China, 21-24 April 2014. Society of Exploration Geophysicists and Chinese Petroleum Society, 2014. http://dx.doi.org/10.1190/igcbeijing2014-041.
Texto completo da fonte