Mohamed Zaki

Internet has been universally recognized as a medium for network-enabled transfer of information and knowledge in various areas. Taking advantage of the continuously improving, web-based learning systems plays an important role for selflearning. Nevertheless, learning systems do not generally adapt to learners’ profiles. Learners have to spend a lot of time before reaching the learning goal that is compatible with their
knowledge background. In this paper, we propose architecture for intelligent E-Learning system architecture which helps learners taking advantage of the web massive contents through the use of an automated assistant (a recommender system). The proposed recommender system is based on a novel feature reduction technique with the goal of being able to adapt according to the learner's interest in the general domain without being specific to a single domain.

Background In stable vitiligo, several techniques of autologous transplantation of melanocytes are used. Autologous melanocyte transplantation of non-cultured melanocytes is one of those techniques with variable reported outcomes.
Objective The objective of this study was to evaluate the response to autologous melanocyte–keratinocytes suspension transplantation in cases of stable vitiligo.
Methods A total of 25 cases of vitiligo were treated by autologous melanocyte–keratinocytes suspension transplantation. After 6–17 months, patients’ response was evaluated according to the extent of pigmentation (excellent 90–100%, good 50–89%, fair 20–49% and poor response <20%).
Results Of the 25 patients treated, 22 continued the follow-up period. Five (23%) patients showed excellent response, 7 (32%) good, 6 (27%) fair and 4(18%) showed poor response.
Conclusion Unlike transplantation of cultured melanocytes, which requires experience in culture technique,autologous melanocyte–keratinocytes suspension transplantation is an easy economic technique, which may be used in resistant areas of stable vitiligo.

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Automatic recognition of car license plate number became a very important in our daily life because of the unlimited increase of cars and transportation systems which make it impossible to be fully managed and monitored by humans, examples are so many like traffic monitoring, tracking stolen cars, managing parking toll, red-light violation enforcement, border and customs checkpoints. Yet it’s a very challenging problem, due to the diversity of plate formats, different scales, rotations and non-uniform illumination conditions during image acquisition. This paper mainly introduces an Automatic Number Plate Recognition System (ANPR) using Morphological operations, Histogram manipulation and Edge detection Techniques for plate localization and characters segmentation. Artificial Neural Networks are used for character classification and recognition.

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The azimuthal angle (f) dependence of the Coulomb barrier parameters (height Vb and position Rb) are studied in the framework of the double-folding model with the realistic M3Y nucleon-nucleon interaction.

The azimuthal angle (φ) dependence of the Coulomb barrier parameters (height V b and position R b) are studied in the framework of the double-folding model with the realistic M3Y nucleon-nucleon interaction. Different pairs of axially symmetric, deformed nuclei are considered. For the interaction between medium and heavy nuclei, the maximum percentage of φ dependence is studied as a function of relative orientations of the interacting nuclei. It appreciably increases as the values of the deformation parameters increase and is sensitive to the hexadecapole deformation. The smallest φ variation is found for the relative orientations θ P= θ T=90. The φ variation of the Coulomb barrier parameters, as calculated in the present paper, is completely different in both magnitude and behavior from those deduced in the widely used proximity approach. © 2011 American Physical Society.

Between 1950 and the beginning of the 21st century, the mortality rates for cancer did not significantly improve. Despite the discovery of dozens of novel anticancer drugs, cancer remains the leading cause of death worldwide. There are wide gaps between the disease incidence (0.16%), disease burden (5.6 %), and the mortality caused by cancer (12.5 %).1 However, in countries with a wide diversity of plant life, there have been intensified efforts to discover natural cancer therapeutics.

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Today, the recombinant proteins become a major foundation of different industrial sectors. Products ofthese industries enhance the fields of medicine, pharmacology, agriculture, nutrition, petrochemicals,paper, textiles and many others. Since the mid 1980s, recombinant DNA technology has enabled thedevelopment of a wide diversity of vectors for expression of the desired recombinant protein innumerous prokaryotic and eukaryotic organisms. Baculovirus expression vector system is consideredone of the most successful and widely acceptable means for the production of recombinant proteins inextremely large quantities.

Today, the recombinant proteins become a major foundation of different industrial sectors. Products of these industries enhance the fields of medicine, pharmacology, agriculture, nutrition, petrochemicals, paper, textiles and many others. Since the mid 1980s, recombinant DNA technology has enabled the development of a wide diversity of vectors for expression of the desired recombinant protein in numerous prokaryotic and eukaryotic organisms. Baculovirus expression vector system is considered one of the most successful and widely acceptable means for production of recombinant proteins in extremely large quantities. Proper posttranslational modifications of the expressed proteins in insect cells, the usual host of baculoviruses, get them soluble, correctly folded and biologically active products. Along with the convenient biological safety, the easy scale up production of recombinant proteins into industrial levels brings this system the first choice in most cases. In the current review, different aspects of the baculovirus biology, structure and morphology are briefly covered to establish the basic concepts important for understanding the mechanisms involved in utilization of baculoviruses as expression vectors. Few outlines on the baculovirus expression system are discussed in terms of potentials, limitations, strategies and perspectives.