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Study the Dissociation Enthalpies for R134a Clathrate Hydrate in Binary and Ternary Systems
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In the present work the clathrate hydrate dissociation enthalpies of refrigerant R134a+ water system, and R134a + water + salt system were determined. The heat of dissociation of three types of aqueous salts solutions of NaCl, KBr and NaF at three concentrations (0.09, 0.17and 0.26) mol·kg−1 for each salt type, were enthalpy measured. The Clapeyron equation was used tocalculate heat of dissociation of experimental data for binary and ternary system.In order to find the effect of compressibility factor on heat dissociation enthalpy, the study was conducted by using equation of state proposed by Peng and Robinson Stryjek-Vera (PRSV). The obtained results of dissociation enthalpy for binary system were (143.8) kJ.mol-1 without gas compressibility factor (z) and (136.08) kJ.mol-1 with z where the variation between two values was (5.3%). For ternary system (R134a+ water +NaCl) at three concentrations of this salt, the calculated values were in the range of (146.7 - 154.1) kJ.mol-1without z and (138.02-145.14) kJ.mol-1with z where the variation rang between two values was (5.8-5.7) %. The other two types of salts given similar results within (0.886 - 0.129) % deviation rang about NaCl results without z and (0.818-0.149) % deviation rang with z values.

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Publication Date
Tue Jan 29 2019
Journal Name
Arab Science Heritage Journal
دراسة نقدية للمنهج عند ابن حزم الظاهري
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ابن حزم ، أبو محمد بن احمد بن سعيد بن حزم ، ولد في قرطبة (384هـ - 944م) وتوفي ودفن فيها عام (456هـ - 1016م) علم من أعلام الفكر الأندلسي ومن أجّل وأشهر مفكريه أصالة وعبقرية ، ويعد أفضل من مثل الثقافة الأندلسية في الحضارة العربية الإسلامية ، مفكر كبير ، وصاحب ثقافة واسعة غطت مجالات المعرفة كلها ، له اهتمامات متعددة يدل عليها كثرة تصانيفه والحقول التي كتب فيها ، حيث بلغ مجموع تأليفه نحو أربعة مائة مجلد (1) ، شملت فروع ا

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Publication Date
Thu Feb 07 2019
Journal Name
Journal Of The College Of Education For Women
١٩٤٥- سیاسة الیابان التوسعیة ١٨٩٥ (دراسة تاریخیة)
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Japans expansionist policy begins (Phase I) after the Chinese- Japanese
war in 1895 until end of the Washington conference in 1922 marine. Therefore
sought to implement the expansion program from the effect that get it after
Chinese- Japan war 1894-1895, and the Russo- Japanese conditions of the
first world war to complete its expansion program through the provision of
twenty- one demands and imposed on china.
In (1916-1917) it was signed a secret agreement with Allied power, that
including the German concessions in the far East to Japan legally has already
received official recognition from the international community.
In sum, the Japan during its period of expansion that has becom the first
Asian power tha

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Publication Date
Thu Jan 06 2011
Journal Name
مجلة العلوم السياسية
الارهاب في العراق :دراسة في الاسباب الحقيقية
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يناقش البحث الاسباب الحقيقية بتفشي الارهاب في العراق بعد العام 2003

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Publication Date
Wed Mar 30 2022
Journal Name
Arab Science Heritage Journal
دراسة دلالية في الاشعار الوجدانية لوليد حسين
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 in his Diwan, and standing on them, and determines This study dealt with the lexical and semantic fields in the sentimental poems in Walid Hussein's Diwan (I do not desire to whisper the question) that the classification

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Publication Date
Fri Feb 08 2019
Journal Name
Journal Of The College Of Education For Women
إستخدامات المرأة العراقیة للقنوات الفضائیة دراسة میدانیة
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This study aims to know how much and how long the Iraqi women's
watch space channels and expose to them and if these channels mee their
need to get knowledge information an entertainment . the role played by
these channels to provide Iraqi women with news about their community to
meet their needs and motives. this study also aims to know much the Iraqi
women expose to these channels and to know the favorable type of the
channels for them and the causes of that and know favorable programs and
why. also it aims to know the types of the if these channels deal with the Iraqi
women's problems and if the women get any advantage either behavior
knowledge for the watching these channels .

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Publication Date
Sat Jan 01 2011
Journal Name
Political Sciences Journal
الاهاب في الهعراق .. دراسة في الاسباب الحقيقية
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لقد حمَّلت مفردة الإرهاب بكمٍ هائلٍ من المفاهيم والدلالات المُتباينة والمُتناقضة . لذا حاول البحث التأكيد على أهمية وضع تعريفٍ مُحدد لظاهرة الارهاب،ومن ثم توضيح ماهي الاسباب الحقيقية وراء تنامي الارهاب في العراق بعد 2003 ،وما هي المتغيرات الاجتماعية والسياسية التي اسهمت في تصاعد وتيرة العمليات الارهابية في العراق،لاسيما وإن المجتمع العراقي مجتمع متعدد الشرائح الاجتماعية،وبشكلٍ قد يُمَّ

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Publication Date
Sat Feb 01 2014
Journal Name
Journal Of Economics And Administrative Sciences
فلسفة دراسة أدارة الموارد البشرية بمنظور استراتيجي*
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with intellectual and philosophical in modern administrative thought. The focus of the target on the identification of the strategic concept of human resource management practices in business organizations. It studied the scientific concept, in terms of how it has been the shift from  personnel management, and to human resources management, and then to HR management strategy. The research has included extensive serious discussions about the nature of the changes, and how to determine the nature and content of the strategic perspective of human resources management in the changing and volatile world of business. It was also the explanation and clarification theoretical philosophies that came in various previous studies, and i

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Publication Date
Tue May 15 2012
Journal Name
مجلة الاداب الجزء الثاني\ اللسانيات –اللغات الاجنبية
العدد: دراسة مقارنة بين اللغة الاسبانية والعربية.
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العدد: دراسة مقارنة بين اللغة الاسبانية والعربية.

Publication Date
Mon Dec 01 2008
Journal Name
Political Sciences Journal
المنظمات الدولية دراسة في منهجها وطبيعة فهمها
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المنظمات الدولية دراسة في منهجها وطبيعة فهمها

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Publication Date
Thu Jul 29 2021
Journal Name
Arab Science Heritage Journal
القيم الحضارية في سورة الحجرات دراسة موضوعية
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Praisebe to God, Lord of the worlds, and blessings and peace be upon the most honorable messengers, our Prophet Muhammad, may God bless him and granthim peace. And after

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