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Item National Symposium on “Chromatography in bio-Medical and Pharmaceutical research : advanced Techniques and Applications” (NSCBPR-2024)(Faculty of Science, 2024-05-09&08)The national symposium on “Chromatography in Bio-Medical and Pharmaceutical Research: Advanced Techniques and Applications” (NSCBPR-2024) was taken place in hybrid mode, in May 08&09th, 2024 at Skikda University, Algeria Scientific research usually aims to transfer the best knowledge from academia to industry and then to the commercial sector. Pharmaceutical and biomedical fields as well pharmacy are interdependent but complement each other in various ways. To achieve this, the success of such transition and accompaniment must be ensured through all available channels. Currently, fundamental findings of advanced techniques of separation and chromatography as research tool provide a strong platform for many pharmaceutical and biomedical applications in health media and industry. To boost up this incorporation, chromatographic research and its related technologies including methodologies and strategies of recent innovations must be transfer to the next generation in order to have an impact and to bring effective changes in various fields such as public health, the environment, industry and others. This has led to sharing research techniques, experiences and skills in scientific meetings. It could be the best way to achieve this objective and it can solve many problems and challenges in all scientific areas.. Hence, this scientific event of NSCBPR-2024 organized by the Department of Chemistry, Skikda University, is an emanation of such reflection and will cover the various subjects related to advanced techniques and applications of chromatography in bio-medical and pharmaceutical research. Leading scientists and researchers will share their recent progress and stimulate discussions on their research activities. The organizing committee also encourages socio-economic companies to present their problems likely to be solved by researchers.Item Effect of Marble Powder and Dolomite on the Mechanical Properties and the Thermal Stability of Poly(vinyl chloride)(Asian Journal of Chemistry Vol. 22, No. 9, 6687-6692, 2010) ZAGHDOUDI , Rachida; BOUNAMOUS , Ghada; MEGHEZZI , Ahmed; DJAZI , FaycalThe polymers are materials whose proprieties can be improved by adding various additives such as the fillers which can be mineral or organic compounds. In this study, we are interested in the possibility of improving the mechanical proprieties and the thermal stability of poly(vinyl chloride) (PVC) by adding local mineral fillers i.e., powder of marble and the dolomite. The composites PVC/dolomite and PVC/ marble (fillers: 0, 5, 10, 15 and 20 phr) have been prepared. The test- tubes have been made up of the different composites through three stages i.e., blending, pressing and cutting up. These test-tubes have been then put under mechanical tests (tensile test and impact IZOD) and a thermo test (Vicat softening temperatures) whereas, the thermo stability of various components has been evaluated by the dehydrochlorination. The results have shown that there is a notable improvement of mechanical and thermo proprieties which is interpreted by the increase of the Vicat softening temperatures and an extension of stability time.