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    Travaux Pratiques Biophysique (partie1) _1ère année Médecine- (2024-2025)
    (2026-03-04) Abadlia Lakhdar
    Résumé Les travaux pratiques de biophysique destinés aux étudiants de première année de médecine visent à renforcer la compréhension des notions théoriques à travers des expériences simples. Ils sont organisés en deux parties selon la disponibilité du matériel. La première partie comprend des manipulations en électricité, optique géométrique, spectrophotométrie et conductivité, permettant d’acquérir les bases expérimentales. La seconde partie, prévue ultérieurement, porte sur des phénomènes biologiques tels que la diffusion, l’osmose, l’électrophorèse et la radioactivité. L’ensemble de ces travaux pratiques a pour objectif de développer les compétences expérimentales des étudiants et de faciliter le lien entre théorie et applications biomédicales.
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    اخلاقيات المهنة و الفساد
    (2025-06-29) khier legridi
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    Structural changes of amorphous Fe86Cr6P6C2 alloy according to temperature and time determined by resistivity, thermopower and DSC
    (16th International Conference on Liquid and Amorphous Metals (LAM-16), 2016-09-04) Abadlia Lakhdar; Gasser Françoise; Khalouk Karim; Gasser Jean-Georges
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    STUDY BY RESISTIVITY MEASUREMENT AND THERMOELECTRIC POWER OF PHASE TRANSITIONS OF MATERIALS AS A FUNCTION OF TEMPERATURE AND TIME
    (4th International Symposium on Materials and Sustainable Development ISMSD2019 Boumerdes - Algeria, November 12-14, 2019 Website: https://ismsd2019.sciencesconf.org, 2019-11-12) Abadlia Lakhdar; Moussa Mayoufi; Gasser Jean-Georges
    Electronic transport properties are important means in understanding materials and in certain industrial processes. They are directly related to atomic structure, crystal lattice, grain size and growth, defects, diffusion, intermetallic phase formation, nucleation, precipitation, aggregation, to dislocations, and gaps ... etc. The modification of the "structure" will lead to a modification of the electronic transport properties. Therefore, electronic transport can be used to characterize changes in the solid, especially phase transformations and their kinetics.As a result, the formation of new phases, the local modification of the composition or the presence of impurities cause a modification of the resistivity and the absolute thermoelectric power which become very sensitive probes for characterizing a material and its phase changes. The principle of the method used is based on the four-wire DC technique for resistivity measurements and the temperature difference (Î‖T) method with constant gradient for thermoelectric power measurements. We first briefly present a very userfriendly "labView" program3 to pilot an automated experimental device for simultaneous measurement of resistivity and ATP as a function of temperature or time (at constant temperature) of hours and days. The device and the program allow us to carry out our measurements in the laboratory between 170 K and 1500 K. The "labView" program can measure either simultaneously or separately the electrical resistivity and the ATP.
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    Mécanique du point matériel-cours et exercices
    (Uinversité de Soukahras 2024, 2024-11-14) ABADLIA Lakhdar