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.
This research aims to present a range of views and beliefs about the climate that have prevailed spontaneously in the Iraqi society and, whether agricultural or Bedouin communities and even popular communities within cities.
عاش البيروني في القرن الرابع الهجري الذي كان يمثل مثاراً للصراعات السياسية والفكرية، ومن خلال هذه الأوضاع المتأزمة برز البيروني كعلم من اعلام هذا القرن، ومن أبرز مفكري الحضارة العربية الاسلامية فنجده كتب في الرياضيات
Harold Pinter was one of the most important dramatists in the modern and the
contemporary age. Pinter presented his own dramatic realm in which he turns the theatre into
a moral institution. He employed the elements of several schools of drama and manipulated
them in order to deliver his ethical messages emphasizing the necessity to regain and renew
the world's morality in order to face the political and social injustices committed against
humanity. His writings developed over more than fifty years in style, techniques and his
interests. However, his main concern was his social and political satire.
ملخص البحث
العولمة ظاهرة اقتصادية سياسية اجتماعية لها انعكاساتها المختلفة على المجتمعات وعلى منظمات الأعمال في مختلف دول العالم، هذه الظاهرة أدت إلى المزيد من النتائج التي زادت منظمات الأعمال في الدول الغنية غناً وزادت منظمات الأعمال في دول العالم الثالث فقر، وقد ترتب على ذلك نتائج ايجابية لدى المجتمعات الغربية والمؤتلفة معها بسبب سيطرة منظمات الأعمال في تلك الدول على الأسواق في البلدان الن
... Show MoreReduction has been linked visually in art since man began making functional and aesthetic forms, and this beginning can be identified with cave paintings. Reduction is one of the clearest indications of intellectual presence in aesthetic experience. Modernism was greatly supported by the great transformations that the intellectual movement witnessed in the world in general and in Europe in particular. There, and their transfer of European artistic experiences, and the reflection of this influence in their aesthetic sculptures, and for this reason the researchers find that the study of the aesthetic references of the reductive forms in the Iraqi sculptural experience represents a great importance in the study of the history of contemporar
... Show MoreAccording to Bowens Family systems theory self – differentiation defiance as a
construct that consists of two interrelated abilities : the first is an intrapsychic
ability to distinguish between the thoughts and feelings , and an inter personal
ability to maintain connections with others while achieving an autonomous self .
The present research concerned in testing the hypothesis of marital similarity
(people married persons with the same level of self – differentiation).
The present research aimed to:
1. Measures self – differentiation of university officers .
2. Measures self - differentiation of sample husbands' .
3. Measures self - differentiation of sample wives .
4. Acquaint to the relation betwe
مستقبل الايديولوجيا واليوتوبيا في الفكر السياسي الغربي الحديث
اشكالية الطائفية السياسية في العراق بين الاستمرارية والانكفائية
Receipt date:08/26/2020 accepted date:9/8/2020 Publication date:12/31/2021
This work is licensed under a Creative Commons Attribution 4.0 International License.
The research entitled (Moderation in Omani External Political Behavior 1970-2020. contained introduction and two sections conclusion and recommendations. The introduction included a general overview of the topic, and the importance of the political behavior o
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