PhD

In this work new derivatives of L-ascorbic acid (Vitamin C ) have been stynthezized .

      This work is a continuous of our previous work in M.Sc study. Our previous work was concerned with the use of locally produced V₂O₅ (technical grade) in the preparation of catalyst successfully employed in the oxidation of n-butane to Malice Anhydride. The catalyst was evaluated using geomechanic system (France) specially built for catalytic test and modified to our proposes. The results had indicated to a functional catalyst.

In this thesis, a Content-Based Image Retrieval (CBIR) system is presented that supports querying with respect to color and texture low-level features. The fundamental idea is to generate automatically image descriptors by analyzing the image content. The focus will be on computing global similarity between images. Query is made upon images of homogeneous color/texture that do not require segmentation.