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bsj-7070
Experimental Investigation of the Mechanical and Structural Properties of a Functionally Graded Material by Adding Alumina Nanoparticles Using A Centrifugal Technique
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In this work, functionally graded materials were synthesized by centrifugal technique at different
volume fractions 0.5, 1, 1.5, and 2% Vf with a rotation speed of 1200 rpm and a constant rotation time, T
= 6 min . The mechanical properties were characterized to study the graded and non-graded nanocomposites
and the pure epoxy material. The mechanical tests showed that graded and non-graded added alumina
(Al2O3) nanoparticles enhanced the effect more than pure epoxy. The maximum difference in impact strength
occurred at (FGM), which was loaded from the rich side of the nano-alumina where the maximum value was
at 1% Vf by 133.33% of the sample epoxy side. The flexural strength and Young modulus of the functionally
graded samples were enhanced by 43.69% and 52.74%, respectively, if loaded from the alumina-rich side.
On the other hand, when loading (FGM) from the epoxy side, the amount of decrease in bending resistance
was 122.4% while the improvement in bending modulus was 81.11% compared to pure epoxy. Scanning
electron microscopy (SEM) revealed the fracture surface of the impact samples and the gradient scattering of
nanoparticles in the epoxy matrix. Numerous applications can be used to manufacture the functionally
graded material by centrifugal casting method, including for the manufacture of gears and all bending
applications such as leaf springs.

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Publication Date
Sat Jun 30 2018
Journal Name
College Of Islamic Sciences
الرواة الذين خرج لهم البخاري في صحيحه وجرحهم ابن حبان دراسة نقدية
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Since the early ages, scientists have been keen on the second source of Islamic law, namely the hadith of the Prophet. They also took from the less disciplined narrators, but they chose from their conversations a selection, and for this some prominent narrators who can be considered that Ibn Habban has been hardened to weaken them. Narrators who avoided Ibn Habban novel They are not true because Ibn Habban neglected her and left her to hurt some narrators who are confident in themselves

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Publication Date
Sun May 10 2015
Journal Name
Al-academy
System formations in contemporary discourse theatrical: حارث حمزة الخفاجي
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System is one of the concepts that fused stages of human thought his contemplations , and the evolution of his ideas and know the universe and existence , was formed several systems and numerous multi- humanitarian field , for example : the political system , the economic system , the system of philosophical , scientific system ... etc. .The current research around trying to find the identity of the system aesthetic in general and theater in particular , the detection of compositions and how Cklath within shifts functional and conceptual , which confirms the importance of Altgria creative as characterized by the following heading towards experimentation and update ongoing , and in particular what we find in the discourse of postmodernism

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Publication Date
Sun Jun 18 2023
Journal Name
Arab Science Heritage Journal
رعاية الايوبييـن للعلـم والعلمـاء في مصـر وبـــــلاد الشـــــــام (567-648هـ/1171-1250م)
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The Ayyub era witnessed a popular for science, knowledge and became the Ayyub state in its various regions a scientific beacon، despite their preoccupation with wars with the Crusaders now that did not discourage them from their care for science and scientists، and this scientific renaissance had many factors، foremost of which are the tendencies of the sultans and Ayyub kings to pay attention to science and its care، through their establishment of the role of science

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Publication Date
Wed Mar 30 2022
Journal Name
College Of Islamic Sciences
أجـــــوبة الحافظ محمد البرزالي على سؤالات العز ابن الحاجب في الجرح والتعديل
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ملخص البحث بالعربي

عنوان البحث : أجـــــوبة الحافظ محمد البرزالي على سؤالات العز ابن الحاجب في الجرح والتعديل

يهدف البحث : إلى جمع أجوبة الحافظ أبي عبدالله محمد البرزالي في الجرح والتعديل، ودراستها.

يتكون البحث من : مقدمة، وتمهيد، نص السؤالات، وخاتمة، وفهارس.

المقدمة : تسمية الموضوع، وسبب اختياره، وأهميته .

والتميهد : ترجمة مختصرة للحافظ أبي عبدالله البرزالي، والتعريف بأجوبة الحافظ الب

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Publication Date
Thu Oct 01 2015
Journal Name
Journal Of Educational And Psychological Researches
القيادة التربوية في ضوء نظريتي x-yوعلاقتها بالروح المعنوية لمديري المدارس الإعدادية
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This study aimed to identify the educational leadership in the light of my theory xy and its relationship to the morale of the managers of the junior high school as the study population consisted of directors of junior high school in the city of Baghdad of six directorates education for the academic year 2013-2014 AD The number of managers (211) as director, and amounted to a sample Search of (150) director and director of the research community overall rate (71%) and represent this community fully representative sample, two tools were used in the study: the first measure of educational leadership in the light of my theory xy and the second tool to gauge morale.

Results concluded that the

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Publication Date
Thu Oct 25 2018
Journal Name
وقائع مؤتمر
تطبيقات انماط قيادة التعقيد في المؤسسات المستندة على المعرفة (التعليم العالي انموذجاً)
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Publication Date
Sun Jul 03 2005
Journal Name
Political Sciences Journal
عرض رسائل واطاريح (اثر التواجد العسكري الامريكي على النظام السياسي في العراق)
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اثر التواجد العسكري الامريكي على النظام السياسي في العراق

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Publication Date
Sun Mar 30 2025
Journal Name
مجلة كلية التربية الأساسية للعلوم التربوية والإنسانية
سمات الشخصية المفضلة لدى معلمي ومعلمات التربية الخاصة في العراق (دراسة عاملية)
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يستهدف البحث الحالي التعرف إلى 1 .بناء مقياس سمات الشخصية المفضلة لدى معلمي ومعلمات التربية الخاصة في العراق من وجهة نظر ذوي اإلختصاص والعاملين في هذا المجال. 2 .مستوى توافر سمات الشخصية المفضلة لدى معلمي ومعلمات التربية الخاصة في العراق من وجهة نظر ذوي اإلختصاص والعاملين في هذا المجال. 3 .داللة الفروق اإلحصائية في سمات الشخصية المفضلة لدى معلمي ومعلمات التربية الخاصة ً في الع ارق من وجهة نظر ذوي اإلختصاص والعا

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Publication Date
Fri Jan 04 2013
Journal Name
المجلة السياسية والدولية
عوامل تكوين الرأي العام وتأثيره في السياسه الخارجيه المصريه بعد عملية التغيير
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Publication Date
Fri Feb 08 2019
Journal Name
Journal Of The College Of Education For Women
"حركة نیاغارا" في الولایات المتحدة الامریكیة: مقدماتھا ، نشأتھا، ١٩١٠- وعوامل انھیارھا ١٨٩
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The Negro minority in the United States is associated with social injustice,
political deprivation, and economic oppresion. Its members felt that they are
second-class citizens, and that the acceptance of such status will lead to the
continual oppresion of the Whites upon them. As a result, the educated community
adopted a process to put a framework to their opposition to the former's injustice.
This organised framework is exemplified in the "Niagara Movement," which is
regarded as the first national organisation for Negros. The topic of this study is
chosen due to its historical and political significance.
The study consists of an introduction and five sections. The first section
addresses the preliminaries an

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