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jcoeduw-1117
Space-Charge Effect on the Theoretical Design of Enzil Lens
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The presentwork is a theoretical study in the field of charged particle optics. It concentrates on the design of electrostatic enzil lens for focusing charge particles beams, using inverse method in designingthe electrostatic lens. The paraxial ray equation was solved to obtain the trajectory of the particles, the optical properties such as the focal length and spherical and chromatic aberration coefficients were determined. The shape of the electrode of the electrostatic lens were determined by solving poison equation and the results showed low values of spherical and chromatic aberrations, which are considered as good criteria for good design.

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Publication Date
Tue Dec 06 2016
Journal Name
Chalcogenide Letters
THEORETICAL MODELING OF THE ELECTRONIC PROPERTIES CORE AND SURFACE OF CdSe1-xTex CHALCOGENIDE NANOCRYSTALS VIA DFT CALCULATION
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Publication Date
Mon Sep 30 2013
Journal Name
Iraqi Journal Of Chemical And Petroleum Engineering
Effect of Additives on the Properties of Different Types of Greases
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The aim of this research is to study the influence of additives on the properties of soap greases, such as lithium, calcium, sodium, lithium-calcium grease, by adding varies additives, such as graphite, molybdenum disulfide, carbon black, corrosion inhibitor, and extreme pressure.
These additives have been added to grease to obtain the best percentages that improve the properties of grease such as load carrying, wear resistance, corrosion resistance, drop point, and penetration.
The results showed the best weight percentages to all types of grease which give good properties are 1.5% extreme pressure additive, 3% graphite, 1% molybdenum disulfide, 2.5% carbon black.
The other hand, the best weight percentage for corrosion inhibit

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Publication Date
Sat Feb 09 2019
Journal Name
Journal Of The College Of Education For Women
ﺗﺳرب طﻼب اﻟﻣدرﺳﺔ اﻻﺑﺗداﺋﯾﺔ ﻓﻲ ﺑﻐداد اﻻﺷﻛﺎﻟﯾﺎت واﻟﻔرص
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Waste is the most common phenomenon in the educational systems. Such a waste should reduce its efficiency and weaken its productivity which is best represented by failing and dropouts .thus resources meant to develop the educational institutions quality and quantity–wise would be wasted .in other words the return of the investments allotted to develop the educational system would fall short of the aims . The consequences would worst in the primary learning field. The research has three chapters: The first chapter is about significance of the research and its aims in addition to a review of literature. The second chapter is about the concept of dropping out of schools in the primary learning sector plus a history of the phenomenon .Thir

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Publication Date
Sun Feb 10 2019
Journal Name
Journal Of The College Of Education For Women
اﻟﺤﻮار اﻟﺤﺴﻲ واﻟﻌﻘﻠﻲ ﻓﻲ ﻓﻠﺴﻔﺔ اﻻﺧﻼق-ﻧﻘﺪ وﺗﺤﻠﯿﻞ
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This research in the philosophy of ethics, we have written under the title (Sensory And Mental Dialogue In The Philosophy Of Ethics -Criticism And Analysis-). Consists of three sections; first: talked dealt within the second part; we writhe about controversial consepts of sensory and mental. Then we about the concept of common philosophical doctrines, either in the third section we talked about the concept of the mind doctrines that secured sence mainly studies in philosophy. The purpose for which our finding in this research is to show that undeniable sense or exceeded in any doctrine of mentale doctrines, just as the mind can not be bypassed or undeniable doctrines sensory ... So as to complete the theory that we have in our thesis to

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Publication Date
Sun Feb 10 2019
Journal Name
Journal Of The College Of Education For Women
آﯾﺎت إﻗﺼﺎء اﻵﺧﺮ ﻓﻲ اﻟﻘﺮآن اﻟﻜﺮﯾﻢ )دراﺳﺔ ﻣﻮﺿﻮﻋﯿﺔ(
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Trading global discourse topic as one of the other entrances to world peace, and the most important reasons for co-existence of intellectual and lumpy, and there Important issue related to a fundamental issue of the other cases are denied and the exclusion of others, Trading global discourse topic as one of the other entrances to world peace, and the most important reasons for co-existence of intellectual and lumpy, and there Important issue related to a fundamental issue of the other cases are denied and the exclusion of others, The stories of the prophets and their people the position of calling them and thought the new Massadik it. have found through research that there are two types of methods in the exclusion are as follows: 

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Publication Date
Sun Feb 10 2019
Journal Name
Journal Of The College Of Education For Women
وﺣدة اﻷﻣﺔ اﻹﺳﻼﻣﯾﺔ ﻓﻲ اﻟﻘرآن اﻟﻛرﯾم )دراﺳﺔ ﻣوﺿوﻋﯾﺔ(
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The theme of unity of the topics that figured prominently Quran, cited preachers and scholars verses function on the unity and sense, to lift the nation from Hdtha, saved from the crisis, in an attempt to reunite and heal the rift, and re nation to unity and strength, and conduct on the path religion True, The Quran the unit is the Constitution of the Islamic nation and a safety valve, a strong rope of God. The following us in our research and Rod talk about it lonely in the Quran, and the statement of some form, and means its findings, including: (obey Allah and His Messenger, and referring to the Quran and Sunnah, and talk by saying better, reform between the brothers, call wisdom and good advice, etc.. ..), as Pena main obstacles and

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Publication Date
Mon Oct 01 2018
Journal Name
Iraqi Journal Of Physics
Study of matter density distributions, elastic charge form factors and size radii for halo 11Be, 19C and 11Li nuclei
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In this work, the calculation of matter density distributions, elastic charge form factors and size radii for halo 11Be, 19C and 11Li nuclei are calculated. Each nuclide under study are divided into two parts; one for core part and the second for halo part. The core part are studied using harmonic-oscillator radial wave functions, while the halo part are studied using the radial wave functions of Woods-Saxon potential. A very good agreement are obtained with experimental data for matter density distributions and available size radii. Besides, the quadrupole moment for 11Li are generated.

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Publication Date
Mon Oct 01 2018
Journal Name
Iraqi Journal Of Physics
Study of matter density distributions, elastic charge form factors and size radii for halo 11Be, 19C and 11Li nuclei
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In this work, the calculation of matter density distributions, elastic charge form factors and size radii for halo 11Be, 19C and 11Li nuclei are calculated. Each nuclide under study are divided into two parts; one for core part and the second for halo part. The core part are studied using harmonic-oscillator radial wave functions, while the halo part are studied using the radial wave functions of Woods-Saxon potential. A very good agreement are obtained with experimental data for matter density distributions and available size radii. Besides, the quadrupole moment for 11Li are generated.

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Publication Date
Sun Mar 06 2011
Journal Name
Baghdad Science Journal
The Calculation of the partical distribution function g(r12,r1) for Carbon Ion cases (C+2,C+3,C+4) in the position space
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The aim of this work is study the partical distribution function g(r12,r1) for Carbon ion cases (C+2,C+3,C+4) in the position space using Hartree-Fock's Wave function, and the partitioning technique for each shell which is represented by Carbon Ions [C+2 (1s22s2)], [C+3 (1s22s)] and [C+4 (1s2)]. A comparision has been made among the three Carbon ions for each shell. A computer programs (MATHCAD ver. 2001i) has been used texcute the results.

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Publication Date
Mon Oct 01 2018
Journal Name
Iraqi Journal Of Physics
SiO2 particles effect on the mechanical properties of the starch/PVA blends
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The present work studies the mechanical properties of SiO2 μPs, and NPs in St/PVA blends. The samples were prepared by casting method as PVA, St/PVA blends at different concentrations (30, 40, 50, and 60 %). DSC and TGA tests were carried out to the samples evolved. The result showed a single glass transition temperature (Tg) for all St /PVA blends that was attributed to the good miscibility of the blends involved. It was found that (Tg) decrease with starch ratio increase. It was seen that (PVA) of (Tg=105 oC); The glass transition temperature which was decrease with starch ratio that was attributed to glass transition relaxation process due to micro-Brownian motion of the main chain back bond. The endothermic peak at 200 oC was attrib

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