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Oxidoreductase enzymes are a group of enzymes that catalyzes the transfer of electrons from one molecule, the reductant, also called the electron donor, to another, the oxidant, also called the electron acceptor. Oxidoreductase enzymes utilize NADP+ or NAD+ as cofactors. Oxidoreductase enzymes include the following: oxidase, dehydrogenase, peroxidase, hydroxylase, oxygenase, and reductase. Most oxidoreductase enzymes are dehydrogenases. However, reductases are also common. The accepted nomenclature for dehydrogenases is “donor dehydrogenase”, where the donor is the oxidized substrate....

The aim of this book is to introduce and study some chaotic and hyperchaotic complex nonlinear systems. Basic properties of these systems including symmetry, dissipation and stability of the equilibrium points are analyzed. The dynamics of these systems is rich in the sense that our systems exhibit chaotic, hyperchaotic attractors, periodic, quasi-periodic solutions and solutions that approach fixed points. Numerically the range of parameters values of the system at which hyperchaotic attractors exist is calculated based on the calculations of Lyapunov exponents. The signs of Lyapunov...

Twelve mango cultivars grown in the Egypt were discriminated by their seed SDS-protein and PCR- based molecular markers. For PCR analysis three different techniquess were used including novel technique. Comparitive analysis were conductied beween the two old technique, ISSR and RAPD, and the novel tecnique, three primers-based RAPD. The cultivar- specific markers represented 24.46%of the total markers (regardless of type of analysis), 88.89% of them were RAPD markers. Most of these markers were scored for the presence of unique bands. Cultivar- specific markers were shown to be useful in...

The potential applications of magnetoelectric composites found much attention in the past years due to their wide range of use as in sensors and memory storages elements. According to the thesis results, the composite may have possible applications in magnetic field sensing probes and linear ME devices. Keywords: Ni-nanoferrite; Magnetoelectric nanocomposite; Structural properties; IR spectra; TEM; dielectric properties; conductivity; electric hysteresis. Supervisors for the Master thesis: 1- Prof. Dr. D.Sc. Mohamed Ali Ahmed 2- Prof. Dr. Salwa Fahim Mansour