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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
Sun Jan 24 2016
Journal Name
Al-academy
Balance Role in designing cloth curtain: مها غازي توفيق
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Designing cloth is a part from culture and civilization of the area of every state to prove its being in all times because it is grown with Man to establish both goals: usefulness and beauty.It is necessary that designer puts in his mind the importance of the designing sources that he derives his designs from , because those sources are also important in that time especially :The Iraqi Ancient Civilization , the Islamic Civilization and Iraqi Folklores . Not to use the cloth sources that doesn't have well known roots in addition to lacking of elements and bases of balance in its different aspects. In conclusion to that studying research subject comes. (Balance Role in designing cloth curtains) The idea or the problem of the research is t

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Publication Date
Tue Mar 30 2021
Journal Name
Baghdad Science Journal
Fixed Point Theorems in General Metric Space with an Application
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   This paper aims to prove an existence theorem for Voltera-type equation in a generalized G- metric space, called the -metric space, where the fixed-point theorem in - metric space is discussed and its application.  First, a new contraction of Hardy-Rogess type is presented and also then fixed point theorem is established for these contractions in the setup of -metric spaces. As application, an existence result for Voltera integral equation is obtained.  

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Publication Date
Sun Jun 30 2024
Journal Name
ملجة نسق
أفعال الكلام في شعر شعراء الفتوح الاسلامية دراسة تداولية
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لم تعد اللغة مجرد أداة للتعبير عما يفكر به المتكلمون، إذ تعدت ذلك إلى أن تكون سبيلاً في صناعة العالم على وفق مقاربة تداولية، وقف عليها علماء البحث اللساني من أمثال أوستن و هرسل، للكشف عما وراء اللغة، وما يقصده المتكلمون، والبحث عن أفعال الكلام التي يسعى المتحدثون الى استعمالها، ولذلك اتجهت هذه الدراسة للوقوف على شعر عصر صدر الإسلام، واجراء دراسة تداولية لاستكشاف الأفعال التي كثيرا ما استعملها شعراء الإسلام

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Publication Date
Mon Jan 23 2023
Journal Name
Arab Science Heritage Journal
الترادف في التعليق المغني لشمس الحق محمد العظيم آبادي
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Praise be to God, Lord of the Worlds, and prayers and peace be upon our master and beloved Muhammad and all his family and companions. As for what follows:

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Publication Date
Mon Dec 01 2008
Journal Name
Political Sciences Journal
العلوم السياسية في العراق بداياتها ، نشأتها ، تطورها ، ومفرداتها التدريسية
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العلوم السياسية في العراق بداياتها ، نشأتها ، تطورها ، ومفرداتها التدريسية

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Publication Date
Thu Jul 29 2021
Journal Name
Arab Science Heritage Journal
اللغة ما بين العامية والفصحى في مجلة لغة العرب
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The Arabic language is one of the important magazines that issued in our contemporary history not only on the Iraqi level but according Arabic one as well because it considered

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Publication Date
Sun Jan 01 2006
Journal Name
Journal Of Educational And Psychological Researches
التعليم المصغر وتطبيقه في برامج إعداد معلمي مادة التاريخ
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مشكلة البحث:

بين الحين والآخر تتصاعد الصيحات مطالبة بإصلاح النظام التعليمي لكي يتوافق هذا النظام مع ما يحدث في العالم من تطورات علمية وتكنولوجية تترك بصماتها على مختلف قطاعات الحياة .

ويعد المعلم وبلا شك ركنا أساسيا في هذا النظام ،وذلك لما للمعلم من تأثير أساسي في عملية التعليم والتعلم . ماذا يجدي إذا ما طورنا مناهجنا، واحسنا مباني مدارسنا، وأكثرنا من الوسائل والتقنيات ،ولم نوفر المع

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Publication Date
Wed Oct 01 2008
Journal Name
Journal Of Educational And Psychological Researches
برنامج لتقويم اداء رؤساء الاقسام العلمية في الجامعات العراقية
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مشكلة البحث

       لقد حدا بالمهتمين في الميدان التربوي، والادارة التربوية بصورة خاصة، ان يجدوا علاقات ايجابية بين متغيرات الميدان التربوي عامة والاداري بصورة خاصة وقد تمخض هذا عن وجود علاقة ايجابية بين اداء المديرين ورؤساء الاقسام ودرجة التقويم، ومن هنا يتضح انه كلما كان التقويم عالياً في درجته، يتضح ان هناك اداءً فاعلاً ولكن ليس بالشكل الحقيقي لمعنى التقويم ما لم يكن هناك

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Publication Date
Wed Feb 01 2023
Journal Name
Baghdad Science Journal
Some New Fixed Point Theorems in Weak Partial Metric Spaces
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The main objective of this work is to introduce and investigate fixed point (F. p) theorems for maps that satisfy contractive conditions in weak partial metric spaces (W.P.M.S), and give some new generalization of the fixed point theorems of Mathews and Heckmann. Our results extend, and unify a multitude of (F. p) theorems and generalize some results in (W.P.M.S). An example is given as an illustration of our results.

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Publication Date
Sun Dec 02 2007
Journal Name
Political Sciences Journal
التطورات السياسية في افريقيا جنوب الصحراء بعد الحرب الباردة
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التطورات السياسية في افريقيا جنوب الصحراء بعد الحرب الباردة

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