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Publication Date
Mon Jul 31 2017
Journal Name
Journal Of Engineering
Volume
23
Issue Number
8
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Effect of New Urban Transformations at Townscape of Historical Cities Urban Study of Alnajaf Historical City Center
Urban transformations
Community participation
Historical Cities Centers
Townscape
Al-najaf City Center
صبيح لفتة فرحان
حسام ساجت عويد
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Elastic Electron Scattering form Factors for Odd-A 2s-1d Shell Nuclei
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and P 31 nuclei
Altaf Abdul
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The charge density distributions (CDD) and the elastic electron scattering form
factors F(q) of the ground state for some odd mass nuclei in the 2s 1d shell, such
as K Mg Al Si 19 25 27 29 , , , and P 31
have been calculated based on the use of
occupation numbers of the states and the single particle wave functions of the
harmonic oscillator potential with size parameters chosen to reproduce the observed
root mean square charge radii for all considered nuclei. It is found that introducing
additional parameters, namely; 1  , and , 2  which reflect the difference of the
occupation numbers of the states from the prediction of the simple shell model leads
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Publication Date
Mon Nov 01 2010
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Chemical Elements Diffusion in the Solar Interior
The standard solar model and equation of state have been used to study relative diffusion of Hydrogen and Helium in the present time for solar interior
as a function of distance and depth from the center of the star. The effects of temperature and density on diffusion velocity for these chemical elements have been explaned. It is found that heat flow which is arising from these reactions leads to an increase in helium diffusion velocity
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diffusion percentages for Hydrogen
Helium and other Heavy Elements could be determined for the main sequence stars and white dwarf stars.
H.
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