Research ArticleOpen accessIn the keywordsOn a Univalent Class Involving Differential Subordinations with ApplicationsR. W. Ibrahim, M. DarusProblem statement: By means of the Hadamard product (or convolution), new class of analytic functions was formed. This class was motivated by many authors. Approach: By using the concept of the subordination and superordination, we define certain differential inequalities and first order differential subordinations. Results: As their applications, we obtain some sufficient conditions for univalence which generalize and refine some … …Journal of Mathematics and Statistics, Vol. 7, Issue 2 · 18 May 2011 · 7,532 accessesView PDFCite
Research ArticleOpen accessIn the abstractGeneralization of Differential OperatorMaslina Darus, Rabha W. IbrahimThe main objective of this study was to generalize a differential operator. The generalized differential operator reduced to many known operators studied by various authors. New classes containing this generalized operator were studied and characterization of these classes was obtained. Further, subordination and superordination results involving this operator were studied and obtained the sandwich theorem. …Journal of Mathematics and Statistics, Vol. 4, Issue 3 · 30 Sep 2008 · 6,945 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy of Electronic Properties of Metal-Insulator-Metal Structures for Fabrication of Cold CathodesHossein Ghaforyan, Majid EbrahimzadehProblem statement: The electrical properties of thin film structures consisting of metalinsulator- metal sandwiches are important in electronic devices. Approach: The electrical properties of thin film structures consisting of metal-insulator-metal sandwiches are investigated in this experimental work. Results: We are discussed of the electroformed metal-insulator-metal structures Au-MgF2-Au and comparison with other Au-SiO/CeF3-Au, Cu-CeF3-Cu, Cu-SiO-Cu, Au-CeF3-Au specimens. There explains various properties … …Physics International, Vol. 1, Issue 2 · 12 Aug 2011 · 7,751 accessesView PDFCite