Preferred Language
Articles
/
jih-1303
The Space-Charge Effect on Theoretical Design of the Electron Gun Operated under Finite Magnification Condition
...Show More Authors

A computer theoretical s1udy has been carried out in field of opto - clcctroniccs, to design  an electron  gun using the space charge effect.

The   distribution  of   axial  potential    upon   the  two   -electrode

immersion  lens  of  (L=l4mm)  has been  carried   out   using   Poisons equation and the  tinite  clement  method;  knowing  the first 11nd second derivation  of  the    axial   potential   and  the  solution   of  paraxial   ray equation, the  optical   properties of  the  focal   length. (Spherical and Chromatic aberration Coefficients) been founds.

An   acceptable  values   for   Splerical   and   Chromatic  aberration

Coefficients aberration coefficients abtained  when a current  of (I= I o-4

  1. A) applied with a been ofunifom1 cross-sectional area S=lmm 2.

View Publication Preview PDF
Quick Preview PDF
Publication Date
Mon Mar 01 2021
Journal Name
Review Of International Geographical Education
Application of strategic management in the colleges of Education / University of Baghdad
...Show More Authors

A field study aimed at identifying the reality of the application of strategic management in the colleges of education/ University of Baghdad. The research adopted the descriptive analytical approach. The research community, consisting of 801 faculty teachers, has been identified. The research sample was selected in a simple random way and represented 15% of the research community, totalling 124 teaching members. A questionnaire was constructed that included (46) items divided between areas (strategic objectives, strategy planning and formulation, implementation of the strategy, and evaluation of the strategy). The honesty and consistency of the tool was verified. The researcher analyzed the research data using SPSS. The most important resu

... Show More
Preview PDF
Publication Date
Sun Jul 09 2023
Journal Name
Journal Of Engineering
Kinetics of the Saponification of Mixed Fats Consisting of Olein and Stearin
...Show More Authors

This research presents the kinetics of the saponification reaction using mixed fats of olein and stearin [in the ratio (3:1)] with NaOH solution. In this reaction, excess solution of NaOH was used to ensure the reaction being irreversible. Three parameters were varied to show their effects on the reaction rate .They are: percentage excess of NaOH solution (10 % - 100 %) , temperature (100-150)oC , and stirring speed (400-1100) rpm. It was noticed that increasing the percentage excess of NaOH solution enhances the rate of reaction while increasing temperature decreases the reaction rate since it is exothermic reaction.    Increasing stirring speed also improves the reaction rate because it is mass transfer controlled .Calcu

... Show More
View Publication Preview PDF
Crossref (3)
Crossref
Publication Date
Wed Nov 01 2023
Journal Name
College Of Physical Education And Sports Science
Electronic shorts for the disabled
...Show More Authors

Publication Date
Thu May 14 2020
Journal Name
Journal Of Planner And Development
Dialogue bridges in the city
...Show More Authors

Since its establishment, cities have been looking for a special urban architectural language that distinguishes them from other cities and expresses their distinctive identity through continuous products through time and controls the totality of temporal and spatial changes through a bridging dialogue that manages the language of the city correctly, Which gives the stability of that language and its ability to adapt to the total changes that occur in the city over time, and thus the possibility of producing ideas integrated series and ideas are renewed overlapping with the legacy and bear multiple layers of meaning and signals and symbols create a total of two meanings The problem of research (not comprehensive studies to create a contem

... Show More
View Publication Preview PDF
Publication Date
Fri Dec 22 2006
Journal Name
Journal Of Planner And Development
Cultural development throughout the ages
...Show More Authors

Urbanization can not be seen as a modern phenomenon. It has led people to live and live in cities for thousands of years. It should be noted here that the oldest villages and large cities have emerged after the crystallization of civilization, that the emergence of cities was one of the phenomena of civilization. There is no doubt that the cities after the emergence has contributed to the development of civilization effective contribution. There has been a civilizational progress when the man practiced agriculture and used metal tools and invented the wheels and went to write in the New Stone Age. In this period, many changes in the field have taken place in economic, cultural and social life. In the economic and cultural aspect, this tr

... Show More
View Publication Preview PDF
Publication Date
Thu Dec 20 2007
Journal Name
Journal Of Planner And Development
The Weighted Index Number Method
...Show More Authors

The process of identifying the region is not an easy process when compared with other operations within the attribute or similarity. It is also not difficult if the process of identifying the region is based on the standard and standard indicators in its calculation. The latter requires the availability of numerical and relative data for the data of each case Any indicator or measure is included in the legal process

View Publication Preview PDF
Publication Date
Mon Feb 25 2019
Journal Name
Iraqi Journal Of Physics
The nuclear level density parameter
...Show More Authors

The nuclear level density parameter  in non Equi-Spacing Model (NON-ESM), Equi-Spacing Model (ESM) and the Backshifted Energy Dependent Fermi Gas model (BSEDFG) was determined for 106 nuclei; the results are tabulated and compared with the experimental works. It was found that there are no recognizable differences between our results and the experimental -values. The calculated level density parameters have been used in computing the state density as a function of the excitation energies for 58Fe and 246Cm nuclei. The results are in a good agreement with the experimental results from earlier published work.

View Publication Preview PDF
Crossref
Publication Date
Fri Dec 31 2021
Journal Name
Political Sciences Journal
The Palestinian division 2006-2007
...Show More Authors

Receipt date:12/15/2020   accepted date:12/29/2020  Publication date: 12/31/2021

Creative Commons License  This work is licensed under a Creative Commons Attribution 4.0 International License.

The study aims to review the division between Fateh and Hamas between 2006 -2007 based primarily on the documents and statements that have been announced in various media, through a review of the course of events after the Palestinian elections of 2006, which resulted in the victory of Hamas, indicating the course division, and the position of each of

... Show More
View Publication Preview PDF
Crossref
Publication Date
Mon Sep 30 2019
Journal Name
College Of Islamic Sciences
the occasion in Surat Maryam
...Show More Authors

The title of the research (the occasion in Surat Maryam) highlights the importance of the subject because he is studying Surah from the wall of the Koran, and that the best times of preoccupation with this light shown, study and thoughtful, and the reason for choosing the topic that the occasion of science helps in understanding the Almighty God in his book, and not Falling in confusion or error, or exaggerated interpretations, and be the key to knowing the rule of the Koran and repeating it, but the results of the conclusion that the occasion has many benefits: including making parts of speech taking each other's necks, strengthens that link and the authorship becomes his case in the case of tight construction , And that the occasion of

... Show More
View Publication Preview PDF
Publication Date
Fri Feb 01 2019
Journal Name
Journal Of The College Of Education For Women
Changing the Wine into Vinegar
...Show More Authors

Changing the Wine into Vinegar

View Publication Preview PDF