Auswahl der wissenschaftlichen Literatur zum Thema „Transformation polymorphique“
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Zeitschriftenartikel zum Thema "Transformation polymorphique":
HÉREIL, P. L., und F. DOUBAX. „MODÉLISATION DE LA TRANSFORMATION POLYMORPHIQUE DU FER HOLTZER“. Le Journal de Physique IV 01, Nr. C3 (Oktober 1991): C3–873—C3–878. http://dx.doi.org/10.1051/jp4:19913122.
Quarton, M., und W. Freundlich. „Un nouvel exemple de transformation rotationnelle: Le polymorphisme de NaPbPO4“. Journal of Solid State Chemistry 56, Nr. 3 (März 1985): 355–59. http://dx.doi.org/10.1016/0022-4596(85)90185-9.
Richard, François. „Contradictions dans la sublimation 1923-2023“. Revue française de psychanalyse Vol. 87, Nr. 4 (20.09.2023): 889–98. http://dx.doi.org/10.3917/rfp.874.0889.
Kniep, Rüdiger, Heinz Jürgen Beister und Dieter Wald. „Polymorphie von Tellur(IV)-iodid/ Polymorphism of Tellurium(IV) Iodide“. Zeitschrift für Naturforschung B 43, Nr. 8 (01.08.1988): 966–80. http://dx.doi.org/10.1515/znb-1988-0810.
RENAND, G., C. LARZUL, E. LE BIHAN-DUVAL und P. LE ROY. „L’amélioration génétique de la qualité de la viande dans les différentes espèces : situation actuelle et perspectives à court et moyen terme“. INRAE Productions Animales 16, Nr. 3 (10.05.2003): 159–73. http://dx.doi.org/10.20870/productions-animales.2003.16.3.3657.
BROCHARD, M., K. DUHEN und D. BOICHARD. „Dossier "PhénoFinlait : Phénotypage et génotypage pour la compréhension et la maîtrise de la composition fine du lait"“. INRAE Productions Animales 27, Nr. 4 (21.10.2014): 251–54. http://dx.doi.org/10.20870/productions-animales.2014.27.4.3071.
MORAND-FEHR, P. M., R. BAUMONT und D. SAUVANT. „Avant-propos : Un dossier sur l’élevage caprin : pourquoi ?“ INRAE Productions Animales 25, Nr. 3 (25.08.2012): 227–32. http://dx.doi.org/10.20870/productions-animales.2012.25.3.3210.
FAVERDIN, P., und C. LEROUX. „Avant-propos“. INRAE Productions Animales 26, Nr. 2 (16.04.2013): 71–76. http://dx.doi.org/10.20870/productions-animales.2013.26.2.3137.
Dissertationen zum Thema "Transformation polymorphique":
Doubax, Francis. „Caractérisation et modélisation de la transformation polymorphique et de l'endommagement dynamique de l'acier MARS“. Toulouse 3, 1992. http://www.theses.fr/1992TOU30251.
Mabire, Catherine. „Transformation polymorphique et fusion de l'étain sous choc dans la gamme 0-100 GPa ; étude expérimentale et modélisation“. Poitiers, 1999. http://www.theses.fr/1999POIT2380.
Juban, Audrey. „Transformation Induite au cours d’un Procédé Industriel (TIPI) de compression directe : transition polymorphique de la caféine et propriétés physiques des comprimés“. Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1144/document.
Direct compression process is widely used in the pharmaceutical industry for tablet manufacturing. This work is dedicated to the study of the polymorphic transformation induced by a direct compression process, and its impact on tablet mechanical properties. The main objective is to improve the understanding of the phase transition of caffeine Form I into Form II occurring during the direct compression process, and whether it has an impact on the tablet tensile strength. In this way, several studies have been conducted on the impact of operating conditions on the polymorphic transformation of a model active pharmaceutical ingredient (API) and on few physical properties of the tablets.The use of a compression simulator Styl’One Classique (Médel’Pharm) and a fatigue equipment (Instron®) for the manufacture of tablets, allowed studying two process parameters (compression load and compression speed) and two formulation parameters (dilution of the API and nature of the diluent). Caffeine phase transitions have been evaluated by differential scanning calorimetry (DSC). Moreover, during several months after tableting, kinetic studies were conducted in order to observe the influence of these parameters on the polymorphic transition of the anhydrous caffeine Form I into Form II in tablets during storage. Finally, the analysis of the transition mechanism of this API was performed thanks to a stretched exponential law, derived from the Johnson-Melh-Avrami model.The tensile strength of tablets (global property) was measured by a diametral compression test and their surface hardness (local property) by nanoindentation. A first predictive model for tablet tensile strength according to the caffeine content was developed. The compression cycle characteristics calculated from the data recording with the compression simulator allowed analyzing the behavior of different blends during the compression process. A second model for predicting the tensile strength was then established.Finally, results obtained for the polymorphic transition and physical properties of tablets will then be confronting
Dupont, Anthony. „Cinétiques de transformations de produits pharmaceutiques sous broyage“. Electronic Thesis or Diss., Université de Lille (2022-....), 2022. https://pepite-depot.univ-lille.fr/LIBRE/EDSMRE/2022/2022ULILR020.pdf.
The objective of this thesis is to improve the understanding of the fundamental microscopic mechanisms that govern the phase transformations induced directly in the solid state by mechanical milling. In particular, three key issues have been addressed: (i) We evaluated the influence of the milling temperature on the effective amorphization rate of a crystalline material. (ii) We determined the influence of monotropic and enantiotropic characters on the mechanisms of polymorphic transformations under milling. (iii) We have shown that the polymorphic transformations under milling are not direct but involve, on the contrary, a transient amorphization mechanism. Our strategy consisted in studying these different problems through a detailed analysis of the transformation kinetics which are the direct reflection of the physical mechanisms that govern them. For this purpose, we have studied in detail the transformation kinetics of physical states of several carefully chosen compounds. These include hydrochlorothiazide, sorbitol, glycine and their mixtures. The investigations were mainly carried out by X-ray diffraction and differential scanning calorimetry (DSC). Moreover, some experimentally demonstrated transformation mechanisms could be modelled and validated by numerical simulations. In summary, all our work indicates that, in general, the transformations under milling seem to result systematically from a competition between an amorphization mechanism due to mechanical shocks and a recrystallization mechanism whose nature depends on both the milling temperature and the crystalline specificities of the material
Artigas, Alava Miguel José. „Contribution à l'étude du polymorphisme des phases MM'X (M,M' = métaux de transition, X=P, As)“. Grenoble 1, 1992. http://www.theses.fr/1992GRE10133.
Khalef, Nawel. „Contributions méthodologiques et instrumentales aux études d'interaction solide-vapeur et transformations cristallines induites en recherche et développement pharmaceutique“. Université Joseph Fourier (Grenoble), 2008. http://www.theses.fr/2008GRE10015.
A methodology together with an instrumental approach, consisting of thermal activity tracing due to changes of the vapour pressure to which the sample is exposed are proposed for solving various pharmaceutieal research, development and production problems. They allow carrying out stability/compatibility testing and studies of the effect ofvapour pressure upon ingredients physical stability, such as amorphous to crystalline changes and amorphous content measurements. Critical vapour pressures of the material are determined. They also allow solid surface characterizations such as sorption isotherms and surface energies assessments that take into account the surface heterogeneity and solubility of the material. Measuring principle and system validation are presented. Numerous examples offTequently encountered prob]ems while manipulating pharmaceutica] ingredients either chemically defined or not, are presented. Procedures reported in the literature, for amorphous content detennination using mierohygrostats containing saturated salt solutions and calorimetrie measurements are questioned and shown to be based upon wrong assumptions. The physicochemical phenomena underlying there limitations are exposed and experimentally shown. Alternative solutions using the approach described above are proposed and experimentally tested. This approach together with classical methods (HPLC, MNR, XRD. . . ) allows studying the stability of sodium cromoglycate in solution and as solid. Its various hydration steps and pseudopo]ymorphic changes are identified. More than a precious analytical tool, the instrument can be used to scale down and monitor processes for production conditions optimization
Desprez, Sylvain Descamps Marc. „Transformation de phases induites par broyage dans un composé moléculaire : l'indométhacine“. Villeneuve d'Ascq : Université des sciences et technologies de Lille, 2007. https://iris.univ-lille1.fr/dspace/handle/1908/594.
N° d'ordre (Lille 1) : 3482. Titre provenant de la page de titre du document numérisé. Bibliogr. à la suite de chaque chapitre.
De, Gusseme Armelle. „Transformations de phases à l'état solide de matériaux pharmaceutiques : la fanansérine et la tréhalose“. Lille 1, 2003. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2003/50376-2003-167.pdf.
Desprez, Sylvain. „Transformation de phases induites par broyage dans un composé moléculaire : l'indométhacine“. Lille 1, 2004. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/2004/50376-2004-181-182.pdf.
La nature de ces états stationnaires est le résultat de la compétition entre un processus balistique, qui dépend de l'intensité du forçage extérieur; et un processus de restauration, thermiquement activé. Cette approche théorique, initialement proposée pour décrire les évolutions des alliages métalliques sous irradiation, a été ensuite étendue au broyage mécanique. Elle semble applicable aux composés organiques, à condition de tenir compte des évolutions propres de la dynamique moléculaire dans ces matériaux, en particulier dans le domaine de la transition vitreuse. Par ailleurs, nous avons mis en évidence la possibilité de manipuler mécaniquement l'état de vieillissement du verre. Des analyses. Microstructurales suggèrent que l'on puisse générer, par broyage, des amorphes différents recristallisant dans différentes variétés polymorphiques. Une image structurale de ce po1yamorphisme, reliée' à la présence de liaisons hydrogène dans ce système, est proposée
Henri-Dubernet, Ségolène. „Etude par électrophorèse en gradient de température de la biodiversité et des dynamiques des populations lactobacilles au cours de la transformation du lait cru en "Camembert de Normandie"“. Caen, 2004. http://www.theses.fr/2004CAEN2034.