Mahmoud, A. S., A. M. Fahmy, A. M. Mahmoud, A. A. Bayomi, and A. Y. E. - Amir,
"Dating of Long Bone Fracture Healing among Egyptian Pediatrics by Radiography (X-Ray)",
indian journal of forensic medicine & toxicology, vol. 14, issue 3, pp. 1048-1052, 2020.
Helmi, F. M., G. A. Mahgoub, and N. M. Ali,
"Dating, restoration,and coservation of an archaeological wooden door No.760, Coptic museum, Cairo, Egypt",
4th International Congress on Science and technology for the safeguard for cultura heritage in the Mediterranean Basin, Cairo, Egypt, 6-8 Decmber, 2009.
M.Fawzy, A.Badr, M.Reda, and I.Farag,
"DBCLUM: Density based Clustering and Merging Algorithm",
International Journal of Computer Applications, vol. 79, pp. 1-6, 2013.
AbstractClustering is a primary method for DB mining. The clustering process becomes very challenge when the data is different densities, different sizes, different shapes, or has noise and outlier. Many existing algorithms are designed to find clusters. But, these algorithms lack to discover clusters of different shapes, densities and sizes. This paper presents a new algorithm called DBCLUM which is an extension of DBSCAN to discover clusters based on density. DBSCAN can discover clusters with arbitrary shapes. But, fail to discover different-density clusters or adjacent clusters. DBCLUM is developed to overcome these problems. DBCLUM discovers clusters individually then merges them if they are density similar and joined. By this concept, DBCLUM can discover different-densities clusters and adjacent clusters. Experiments revealed that DBCLUM is able to discover adjacent clusters and different-densities clusters and DBCLUM is faster than DBSCAN with speed up ranges from 11% to 52%.
Abdelhamid, I. A., M. H. Mohamed, A. M. Abdelmoniem, and S. A. S. Ghozlan,
"DBU-Catalyzed, facile and efficient method for synthesis of spirocyclic 2-oxindole derivatives with incorporated 6-amino-4H-pyridazines and fused derivatives via [3+ 3] atom combination",
Tetrahedron, vol. 65, issue 48: Elsevier, pp. 10069-10073, 2009.
Abstractn/a
Abdelhamid, I. A., M. H. Mohamed, A. M. Abdelmoniem, and S. A. S. Ghozlan,
"DBU-Catalyzed, facile and efficient method for synthesis of spirocyclic 2-oxindole derivatives with incorporated 6-amino-4H-pyridazines and fused derivatives via [3+3] atom combination",
Tetrahedron, vol. 65, issue 48, pp. 10069 - 10073, 2009.
Abstractn/a
Abdelhamid, I. A., M. H. Mohamed, A. M. Abdelmoniem, and S. A. S. Ghozlan,
"DBU-Catalyzed, facile and efficient method for synthesis of spirocyclic 2-oxindole derivatives with incorporated 6-amino-4H-pyridazines and fused derivatives via [3+3] atom combination",
Tetrahedron, vol. 65, issue 48, pp. 10069 - 10073, 2009.
Abstractn/a
Abdelhamid, I. A., M. H. Mohamed, A. M. Abdelmoniem, and S. A. S. Ghozlan,
"DBU-Catalyzed, facile and efficient method for synthesis of spirocyclic 2-oxindole derivatives with incorporated 6-amino-4H-pyridazines and fused derivatives via [3+3] atom combination",
Tetrahedron, vol. 65, issue 48, pp. 10069 - 10073, 2009///.
Abstract3-Cyanomethylidene oxindole derivatives were prepared in excellent yields utilizing DBU-promoted Knoevenagel condensation of isatin derivatives with active methylene reagents. The isolated products were then reacted with azaenamines via a DBU-promoted Michael addition to yield spirocyclic 2-oxindole derivatives with incorporated 6-amino-4H-pyridazines and their fused derivatives. © 2009 Elsevier Ltd. All rights reserved.
El-kader, A. F. H., W. H. Osman, and R. S. Hafez,
"DC conduction mechanism and dielectric properties of poly (methyl methacrylate)/ poly (vinyl acetate) blends doped and undoped with malachite green.",
Physica B: Condensed Matter, vol. 408, pp. 140-150 , 2013.
AbstractCast thin films of Poly (methyl methacrylate)/Poly (vinyl acetate) blends of different concentrations undoped and doped with malachite green have been prepared and subjected to both dc electrical conduction and dielectric spectroscopy measurements. The analysis of dc electrical conduction data showed that the space charge limited current mechanism has been dominant for Poly (vinyl acetate) while Schottky–Richardson conduction mechanism prevailed for the Poly (methyl methacrylate) and blended samples. The values of field lowering constant β and the thermal activation energy ΔE involved in the dc conduction were reported, which provide another support for the suggested Schottky–Richardson mechanism. The increase in current for the blend sample doped with malachite green has been attributed to the formation of charge transfer complexes inside the polyblend matrix. The dielectric constant as a function of temperature for all samples have been calculated which are affected by the composition ratio and the addition of dye. The relaxation peak that appeared in the dielectric loss curve at 347 K for the doped blend sample is related to local dipoles that are present in the dye material. The obtained relaxation process spectra present in the investigated samples were analyzed with the well-known model of Havriliak–Negami.
Nasr, G. M., A. A. S. Haleem, A. Klingner, A. M. Alnozahy, and M. H. Mourad,
"The DC Electrical Properties of Polyvinyl Alcohol/ Multi-Walled Carbon Nanotube Composites",
Journal of Multidisciplinary Engineering Science and Technology (JMEST) , vol. 2, issue 5, pp. 884-889, 2015.