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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
Sat Feb 09 2019
Journal Name
Journal Of The College Of Education For Women
ﺑﻧﺎء ﻣﻘﯾﺎس إدارة اﻟوﻗت ﻟدى أﻋﺿﺎء اﻟﮭﯾﺋﺔ اﻟﺗدرﯾﺳﯾﺔ ﻓﻲ ﺟﺎﻣﻌﺔ ﺑﻐداد
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The Current research aims at building a scale for the time management for the faculty members at the University of Baghdad. To achieve this goal, the researcher formulates (45) paragraphs by using verbal expressions. In front of each expression, five alternatives have been placed reflecting the extent of the emergence of this behavior (always, often, sometimes, rarely, never). For the purpose of verifying the validity of the paragraphs of the scale; the researcher has consulted a group of experts who revised these paragraphs and show their remarks. In the light of these remarks, the researcher excludes two paragraphs, and thus the number of the scale's paragraphs becomes (43). These paragraphs have been applied by the researcher on an ex

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Publication Date
Sun Feb 10 2019
Journal Name
Journal Of The College Of Education For Women
١٩٦٧اﻟﺪﻋﻢ اﻟﻠﯿﺒﻲ ﻟﻤﺼﺮ ﻓﻲ ﺣﺮب ﺣﺰﯾﺮان )ﺑﺤﺚ ﻣﺴﺘﻞ ﻣﻦ رﺳﺎﻟﺔ ﻣﺎﺟﺴﺘﯿﺮ(
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The Libyan-Egyptian relations since 1952 to 1969, which studies two neighboring states ,and the geographical proximity has an effect in documenting and cementing the relationship between the two states. They share 1094 m long borders. That was reflected on the kind of relationship the two countries has shares. The Libyan-Egyptian relationship is not a superficial one, as the two countries have shared borders. What lies between them is a mixture of geography and human. It is an undying history. Our choice of the topic is limited to the period 1952 the beginning of the LibyanEgyptian. The revolution of 23rd July 1952 in Egypt and the declaration of republic there. For Libya, it was the monarchy in 1969 with the September 1 revolution.

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Publication Date
Tue May 28 2024
Journal Name
Journal Of Optics
Study of the optical properties of aluminum films and the effect of current frequency on plasma parameters
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Publication Date
Wed Nov 14 2018
Journal Name
Iraqi National Journal Of Nursing Specialties
The Effect of Different Concentrations of Gilvest with Water on the Setting Time of Phosphate-bonded investment
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Objective: To identify of the effect of the different concentrations of the special liquid (for mixing the investment, Gilvest)
and mixed with water/powder ratio on setting time of phosphate–bonded investment.
Method and materials: The present study is (60) specimens made from phosphate bonded investment divided into (4)
groups (control and experimental groups), (15) specimens for each group. The Gillmore needle device is used to setting
time of phosphate bonded investment mixed with different concentration of Gilvest and water.
Results: Showed that there is a high significant difference (P<0.01) between each groups in the ANOVA test and a
significant difference (P<0.05) between the group (A) and control group i

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Publication Date
Thu Dec 01 2016
Journal Name
Journal Of Engineering
Numerical and Experimental Investigations of the Effect of PVD and Vacuum Pressure on the Degree of Saturation
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    Soft clays are generally characterized by low shear strength, low permeability and high compressibility. An effective method to accelerate consolidation of such soils is to use vertical drains along with vacuum preloading to encourage radial flow of water.  In this research numerical modeling of prefabricated vertical drains with vacuum pressure was done to investigate the effect of using vertical drains together with vacuum pressure on the degree of saturation of fully and saturated-unsaturated soft soils.  Laboratory experiments were conducted by using a specially-designed large consolidometer cell where a central drain was installed and vacuum pressure was applied. All tests were conducted

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Publication Date
Fri Jul 21 2023
Journal Name
Journal Of Engineering
The Effect of Different Types of Aggregate and Additives on the Properties of Self-Compacting Lightweight Concrete
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The major aim of this research is study the effect of the type of lightweight aggregate (Porcelinite and Thermostone), type and ratio of the pozzolanic material(SF and HRM) and the use of different ratios of w/cm ratio(0.32 and 0.35) on the properties of SCLWC in the fresh and hardened state. SF and HRM are used in three percentage 5%,10%, and 15% as a partial replacement by weight of
cement for all types of SCLWC. The requirements of self-compatibility for SCC are fulfilled by using the high performance superplasticizer (G51) at 1.2liter per 100 kg of cement. The values of air dry density and compressive strength at age of 28 days within the limits of structural lightweight concrete. The air dry density and compressive strength at a

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Publication Date
Thu Dec 15 2022
Journal Name
Al-academy
Evaluating the education quality in the College of Fine Arts "Design Department as a model"
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Education quality evaluation is one of the objectives of education quality. The evaluation includes assessing the education standards and academic program outcomes to develop intellectual, scientific and practical concepts for the educational structure. It considers the determination of the rates of the number of accepted students and graduates. The research focuses on "what are the levels of education quality according to the evaluation mechanisms in the design department" to enhance the quality system and the objectives of theoretical and applied education.
It is identifying the levels of education quality and evaluating it according to the numbers and rates of graduate students of the design department branches for morning and ev

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Crossref
Publication Date
Sun Mar 19 2023
Journal Name
Journal Of Educational And Psychological Researches
The Effect of the Active Reading Strategy on the Achievement of the Second Year Middle School Students in Biology
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Abstract

The aim of the current research is to identify the effect of the effective reading strategy on the achievement of second-middle students in biology, as well as the imaginative thinking skills of students. The researcher adopted the experimental design with partial control to achieve the goal of the research. The current research community identified the second-middle students in the government schools of the Baghdad Education Directorate / Rusafa I for the academic year (2021-2022 AD). The Safina Intermediate School for Girls was chosen to be the research sample in the form of intentionally, two classes were randomly selected from a total of four classes, one of them is experimental and the other is con

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Publication Date
Sun Jan 25 2026
Journal Name
Journal Of Studies And Researches Of Sport Education
The effect of using the educational bag on the level of learning some offensive skills with the epee weapon
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Publication Date
Sun Dec 01 2019
Journal Name
Acoustical Society Of America
Effect of ultrasonic pretreatment on pyrolysis of microalgae
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