Literatura científica selecionada sobre o tema "Magnésie – Effets des hautes pressions"
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Artigos de revistas sobre o assunto "Magnésie – Effets des hautes pressions":
Lonvaud-Funel, Aline, Géraldine Dupont, Gérard Demazeau e J. Bignon. "Essais de mutage de vins blancs liquoreux par traitement aux hautes pressions". OENO One 28, n.º 1 (31 de março de 1994): 57. http://dx.doi.org/10.20870/oeno-one.1994.28.1.1155.
LE NEINDRE, Bernard. "Effets des hautes et très hautes pressions". Caractérisation et propriétés de la matière, dezembro de 1990. http://dx.doi.org/10.51257/a-v1-k484.
Teses / dissertações sobre o assunto "Magnésie – Effets des hautes pressions":
Ledoux, Estelle. "Microstructures de transformation et déformation dans le manteau terrestre : application au périclase et à la wadsleyite". Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR050.
The microstructure of rocks depends on the conditions of pressure, temperature and deformation they undergo. In the Earth's mantle, microstructures affect the seismic signals, in the form of seismic anisotropy, for instance. The interpretation of seismic observations in terms of microstructures, however, requires a good knowledge of plastic deformation in mantle minerals.In this thesis, I am using laboratory experiments to investigate the microstructures that can form in mantle's minerals. I am focusing on three cases: the deformation of periclase at high pressure and high temperature, the transformation of (Mg,Fe)2SiO4 olivine in wadsleyite at conditions relevant for the 410 km depth discontinuity in the mantle, and the deformation of wadsleyite at high-pressure and high-temperature.I identify microstructures in polycrysals resulting from deformation / transformation experiments using in-situ X-rays diffraction analysis using powder diffraction and multigrain crystallography, and post-mortem scanning and transmission electron microscopy characterization. My results show: i) that an increase of temperature induces a transition of dominant deformation mechanism in polycrystalline periclase, with dislocation creep at low temperatures and grain boundary sliding at 1270 K, ii) that an increase of pressure and temperature induces change of dominant slip systems in periclase, iii) that at conditions of the 410 km depth discontinuity, the transformation from olivine to wadsleyite is not martensitic and then erases the microstructures of the parent rocks, and iv) that the activity of the slip systems in wadsleyite, and so the texture and anisotropy, depend on the temperature and the water content of wadsleyite.Finally, from the microstructures observed in the deformed wadsleyite, I simulate seismic observables in different scenarii, a subduction zone and a mantle plume, and compare the results to seismic anisotropy from the literature to discuss the predictions of the mineralogy experiments
Guerrero, François. "Etude des effets des hautes pressions sur le debit carotidien". Aix-Marseille 2, 1993. http://www.theses.fr/1993AIX20660.
Kadri, Adel. "Aspects physico-chimiques des effets de la pression sur la cristallogenèse des protéines". Université Louis Pasteur (Strasbourg) (1971-2008), 2004. http://www.theses.fr/2004STR13024.
Marie, Philippe. "Conception et développement d'un nouveau procédé d'émulsification par haute pression". Dijon, 2003. http://www.theses.fr/2003DIJOS054.
Nabhan, Mohamad Ammar. "Protéolyse et redistribution des protéines entre différentes fractions azotées après traitement du lait par hautes pressions". Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL054N.
The thermal treatments induce frequently undesirable modifications in foods that could be avoided by the use of minimum treatment strategies. Among these treatments, high pressures are already commercialized by the alimentary industry. Pressure/temperature combination induced denaturation of beta-lactogiobulin and the formation of aggregates composed principally of beta-lactogiobulin, kappa-casein and of aipha-lactaibumin and of alphas1-casein at a lesser extent. The treatment reduce plasmin activity and induce an irreversible unfolding of alpha-lactaibumin at pH 7. 0 and a significant quantity was recovered in proteose-peptones fraction. To ensure the stability of natural microflora of milk during 21 days, milk must be treated at least 400 MPa and at comparatively extreme temperature. To eliminate completely the studied pathogen bacteria and ensure no surviving during 21 days, a treatment of at least 500 MPa and 55°C for 5 min minimum is necessary. Our results show that pressurized milks present an odor, a taste, a color and a texture different of pasteurized milk. Although different, the jury do not mark preference to any milk tested
Douzals, Jean-Paul. "Effets des hautes pressions isostatiques sur les modifications physico-chimiques de l'amidon". Dijon, 1999. http://www.theses.fr/1999DIJO5004.
Canelon, Carlos Eduardo. "Cinétique de floculation des asphaltènes dans les mélanges n-heptane-toluène et étude de leur stabilité dans le brut en présence de CO2 à haute pression et haute température". Pau, 2006. http://www.theses.fr/2006PAUU3004.
The first part of this thesis focuses on an experimental study of the kinetic of asphaltenes flocculation of theVenezuelan crude oils Furrial and Hamaca. The influence of the ratio resins-asphaltenes and n-heptane-toluene, on the flocculation constant rate analyzed. The experimental results are interpreted and modelled by an osmotic micro-model allowing to illustrate the stabilizing effect of the absorption of resins on asphaltene colloids. In the second part, an original device with high sensitivity and precision is presented. It allows measurements of structural modifications occurring in opaque paraffinic and of asphaltenic crudes at high pressure and temperature (0. 1 to 70 MPa and 273 - 473 K). Experimental results of the effects of CO2 injection into two Venezuelan crude oils (Furrial et Jusepin) are also reported
En la primera parte de esta memoria hemos abordado el estudio de la cinética de floculación de asfaltenos de crudos venezolanos Furrial y Hamaca. Analizamos la influencia de la relación entre la concentración de resinas-asfaltenos y la n-heptano-tolueno, sobre la constante de velocidad de floculación. Los resultados experimentales son interpretados y discutidos en términos de un micro-modelo osmótico que permite ilustrar el efecto estabilizador de la adsorción de resinas sobre la periferia coloidal de los asfaltenos. En la segunda parte, se presenta un dispositivo experimental original con una alta sensibilidad que permite mediciones de las modificaciones estructurales de medios opacos parafinicos y de asfaltenos, en condiciones de alta presión y temperatura (0,1 a 70 MPa y 273 a 473 K). Igualmente, se muestran los resultados experimentales obtenidos del efecto de inyección de CO2 para dos crudos venezolanos (Furrial y Jusepin)
Risso, Jean-Jacques. "Recherches concernant les effets neurochimiques des hautes pressions d'hélium chez le mammifère de laboratoire : contribution à l'étude des mécanismes du syndrôme nerveux des hautes pressions". Lyon 1, 1987. http://www.theses.fr/1987LYO10014.
Risso, Jean-Jacques. "Recherches concernant les effets neurochimiques des hautes pressions d'hélium chez le mammifère de laboratoire contribution à l'étude des mécanismes du syndrome nerveux des hautes pressions /". Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37609397k.
Cognigni, Andrea. "Méthodes expérimentales pour l'étude par BioXAS de métalloprotéines en variant le potentiel et la pression : application à l’étude de la superoxyde dismutase". Paris 11, 2005. http://www.theses.fr/2005PA112376.