Search Results - "Elnawawy, M."
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The impact of the AGN and the torus properties on the evolution of spiral galaxies
Published in Monthly notices of the Royal Astronomical Society (01-02-2023)“…For spiral galaxies, the active galactic nucleus (AGN) and some physical parameters that concern the host galaxy such as spiral arm radius and density can play…”
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A standalone prediction model for atomic oxygen and coronal mass ejections
Published in Astrophysics and space science (01-03-2023)“…This paper presents a standalone predictive model for Atomic Oxygen (AO), Coronal Mass Ejections (CMEs) and other space-environment parameters. The prediction…”
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FPGA Realizations of Chaotic Epidemic and Disease Models Including Covid-19
Published in IEEE access (01-01-2021)“…The spread of epidemics and diseases is known to exhibit chaotic dynamics; a fact confirmed by many developed mathematical models. However, to the best of our…”
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Two-Dimensional Rotation of Chaotic Attractors: Demonstrative Examples and FPGA Realization
Published in Circuits, systems, and signal processing (01-10-2019)“…In this work, we demonstrate the possibility of performing two-dimensional rotation on a chaotic system. This enables the rotation of its attractor in space…”
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FPGA implementation of a chaotic oscillator with odd/even symmetry and its application
Published in Integration (Amsterdam) (01-05-2020)“…We propose a mathematical system capable of exhibiting chaos with a chaotic attractor which is odd symmetrical in the x − y phase plane but even symmetrical in…”
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Effect of Atomic Oxygen on LEO CubeSat
Published in International journal of aeronautical and space sciences (01-06-2021)“…Atomic oxygen (AO) is a major threat to satellites in Low Earth Orbits (LEO). AO causes serious damage to satellites such as erosion, corrosion and damage to…”
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the impact of the AGN and the torus properties on the evolution of spiral galaxies
Published 30-12-2022“…For spiral galaxies, the active galactic nucleus (AGN) and some physical parameters that concern the host galaxy such as spiral arm radius and density can play…”
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ANTIOXIDANT AND ANTIRADICAL ACTIVITY OF GREEN TEA (Camellia sinensis) AQUEOUS EXTRACT AND ITS CAPABILITY TO RETARDATION OF RATS LIVER CIRRHOSIS
Published in Arab Universities journal of agricultural sciences (01-02-2018)“…he aim of the present study was to optimize the extraction conditions of green tea aqueous extract [green tea concentration (G) and extraction temperature…”
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The charge state in a highly dense molecular cloud
Published in Astrophysics and space science (01-04-1992)Get full text
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Microbial synthesis of 3-deoxy-D-erythro-hex-2-ulosonic acid 6-phosphate
Published in Carbohydrate research (07-04-1993)“…A microbial route was explored for the synthesis of 3-deoxy-D-erythro-hex-2-ulosonic acid 6-phosphate (2-keto-3-deoxy-6-phosphogluconate, KDPG). Two strains of…”
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The magnetic field in a protostellar cloud
Published in Astrophysics and space science (01-02-1990)“…The present investigation of both the isothermal and nonisothermal regions' B-rho relation gives attention to the magnetic dissipation, which can occur by way…”
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Magnetic flux dissipation in a collapsing protostar
Published in Monthly notices of the Royal Astronomical Society (01-06-1988)“…We discuss the redistribution of magnetic flux in a collapsing protostellar magnetic cloud subject to Ohmic dissipation. We have calculated numerically the…”
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The Rosseland mean opacity of interstellar grains
Published in Astrophysics and space science (01-02-1992)“…The opacity of interstellar grains in the temperature range 10-1500 K is calculated. Two composite grain models have been considered. One of them consists of…”
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Shock waves and the chemical structure of interstellar clouds
Published in Astrophysics and space science (01-11-1991)“…The effect of shock waves on the chemical structure of the interstellar clouds is studied. A model of molecular cloud has been assumed. The chemistry is…”
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Dynamics of shock waves in a contracting cloud
Published in Astrophysics and space science (01-11-1991)“…The dynamics of the shock waves in a contracting interstellar cloud is examined, with emphasis on the thermal state. The major cooling and heating mechanisms…”
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The evolution of charged particles in a model of contracting cloud
Published in Earth, moon, and planets (01-01-1996)“…The evolution of charged particles is followed during contraction of a model of an interstellar cloud, with initial density number of n = 10/cu cm. The…”
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The chemical evolution in a model of contracting cloud
Published in Earth, moon, and planets (01-01-1996)“…The evolution of the different chemical species are followed in a model of contracting interstellar cloud. The central density increases from n = 10/cu cm in a…”
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