A theoretical and protection study was conducted of the corrosion behavior of carbon steel surface with different concentrations of the derivative (Quinolin-2-one), namely 7-Ethyl-4-methyl-1-[(4-nitro-benzylidene)-amino]-1H-quinolin-2-one (EMNQ2O). Theoretically, Density Functional Theory (DFT) of B3LYP/ 6-311++G/ 2d, 2p level was carried out to calculate the geometrical structure, physical properties and chemical inhibition chemical parameters, with the local reactivity in order to predict both the reactive centers and to know the possible sites of nucleophilic and electrophilic attacks, in vacuum and two solvents (DMSO and H2O), all at the equilibrium geometry. Experimentally, the inhibition efficiencies (%IE) in (3.5% NaCl) and (0.5M HCl) solutions were studied using potentiometric polarization measurements. The results revealed that the (%IE) in the salty solution (94.98%) is greater than that in the acidic solution (81.40%). The thermodynamic parameters obtained, supported the physical adsorption mechanism and the adsorption followed the Langmuir adsorption isotherm. The surface changes of the carbon steel were studied using SEM (Scanning Electron Microscopy) and AFM (Atomic Force Microscopy) techniques.
اكتشافات النص الروائي واهميته في المعالجة والاخراج
تهدف هذه دراسه
This paper deals with an important aspect of creativity in the poetry of Ibn Zaidoun, a senior poets Andalusians and writers
Non-Muslim scholars, who are Jews, Christians, Sabians and Magi, excelled in various pure scientific and human sciences, being the owners of civilizational inheritances. On the rest of the sciences in which non-Muslims excelled, namely mathematics, chemistry, astronomy, astrology, philosophy, history, and the Arabic language.
يتعلق موضوع بحثنا في الصلة بين القانون والاخلاق، إذ تكمن جوهر فكرة القانون عموما والجنائي بشكل أخص فهذا الاخير انما يتعامل اساسا مع صور المساس الاكثر خطورة بالمعايير الاخلاقية والقيم التي تستند اليها. ويتعلق الامر بعد ذلك بالحقائق الاجتماعية التي تؤكد وجود تباين ملحوظ في مستويات الالتزام الفردي والجمعي بتلك المعايير نتيجة للتغير والتغيير الاجتماعي السلبي او الايجابي فإذا جمعنا ذلك مع ثبات القانون النسبي ك
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تعد السياحة احد مستلزمات الحضارة الحديثة لما تفرزه من آثار ايجابية ودور متميز في دعم الاقتصاد الوطني وتقليل نسبة البطالة وتنشيط الحركة التجارية بين البلدان، اذ لا يمكن ان نتصور وجود بلد متحضر بلا فنادق ولا سياحة وتقديم مختلف السلع والخدمات سياحية التي يمكن ان تسبع الحاجات والرغبات واذواق السياح من خلال وجود منشآت سياحية تعكس النمط السياحي القائم على اختلاف انواعه
... Show MoreEpistemological skepticism was present strongly in the Islamic
philosophical heritage. Many texts were received by thinkers and
philosophers calling for
ف هذه الدراسة إلى حثىظ هىةهالا ارابىاا وىي ر"ادىة ا فدىء اللاىدا ا رر،ىي ىة ا لأن هىىذه الهىىةهالا تأىىد" ضوحىىا "هىى اة وىىي هىىذه الا"ادىىة "ت حىى تیىىةرا طىىی الا ،ىى ي یةتهىىة "اتجةهةتهىىىىة اللا ااىىىىة "اللاةیىىىىة تة ىىىىة ضن ال ةتىىىى اسىىىىب ةم ضن دجطىىىىد هىىىىذه الهىىىىةهالا ال ث راىىىىة تجط دا وةیة ب زا "كشف ن طأیية اليلاقة ب ن ةلم ال اقع " ةلم الث،م لدى الشخصیةت " ىىىة تبطىىىم حىىىض ىىىن تةى
... Show Moreاهتم العرب بالجواهر والاحجار الكريمة منذ القدم وازداد هذا الاهتمام في حقب الترف والحضارة . ولم يقتصر استخدام الجواهر والاحجار على الطبقات الغنية كالخلفاء والامراء والوزراء بل شمل كل شرائح المجتمع الاخرى لان الاحجار
Abstract
The twentieth century French novel had undergo a significant change that took the form of a radical move from the traditional son who follows his father to one who no way prevalent in the classical French novel. The new son in the 2Oth century novel finds himself emotionally attached which both became a new trend and approach in novel writing.
Marcel Proust's novel which can be considered a source of inspiration for most of 2Oth century novelists is a good example of the mother supremacy which is crystal clear from the first page through its parts and chapters till the last page. In fact, Proust had written a completely different novel from the Balzacian conventions. Unlike the latter's novels, Pro
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