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.
يعدّ مرقد السيدة نرجس كاحد المعالم القديمة المقدسة في العالم الإسلامي،
لابدّ من تسليط الضوء على شخصية السيدة نرجس عليها السلام
دراسات في قانون التجارة الدولية
L'ouverture des frontières et la mondialisation des échanges,comme les projets de l'intégration font de la connaissance de langue un enjeu essentiel ,professionnel et culturel,pour le citoyen de demain.
L'Irak est un pays Anglophone où domine l'anglais,le français est considérée comme deuxième langue étrangère en Irak.
Notre mini-mémoire se compose de deux parties.Dans la première partie nous essayons d'examiner la place du français en Irak qui nous dirige à savoir pourquoi on apprend le français en Irak et qui l'apprend?Est –ce qu'il y a une coopération française?
Dans la deuxième partie nous examinons les problèmes du français en Ir
... Show MoreRESUMEN:
Pretendemos hacer con este trabajo un breve recorrido sobre lo que han dicho algunos gramáticos de las construcciones condicionales, a la par señalaremos los criterios que los mismos establecen y siguen para diferenciar entre distintos tipos de estructuras condicionales o entre las construcciones que ellos entienden o consideran como tales y las que no, atendiendo fundamentalmente a dos criterios; formal y semántico-pragmático. El presente trabajo tiene como objetivo la clasificación y la descripción de las construcciones condicionales, demostrando que no todas las condicionales son hipotéticas ni todas las hipotéticas son condicionales.
Abstract
We intend to make this work
... Show MoreIn conclusion, I should mention that a lot of Alabaltrathih disappeared and no longer practiced in the present invention of alternatives to it like a game Almsra practiced by children for many generations by Almsra wooden, replaced Almsra-mail, or game Aledo.
تدريس العلاقات الدولية في العراق
Tribute in Islamic economical system was considered one of the matters that took great importance where there put for it many jurisdictions that organize its work and the tribute was considered one of the permanent income for the state and the tribute had direct benefits for the life of the people where with the increasing differences in the
اهميه البحث :
ان ظاهره الصراع هي احدى حقائق العلاقات منذ فجر التاريخ ,وعالم اليوم يتميز بالمتغيرات السريعه التي اسفرت عن توترات شتى , تؤكد اتصافه بالكيانات الكبرى والمصالح المتباينه وعلى الرغم من التقدم الحضاري وثبات الدعائم والاسس التي تقوم عليها العلاقات فان العالم يتسم بتعدد الازمات التي يواجهها والناجمه عن اختلال توازنات القوى الكبرىوتزايد اطماعها مع سعي القوى الصغرى الى تحقيق مز
... Show Moreالعلمانية في الفكر الصهيوني المعاصر
Nesrin Erbil, Çağdaş Türk şiirinin kıvançla söyliyebileceğimiz öncü bir isimdir. Gerçek aşk, ayrılık, üzüntü, sevgiliye hasretin yetiştirdiği ve olanaksızlıklara haykıran bir sesidir. O bir Türkcesine tüm zencirleri kıran engelleri aşan sevgiyle sevgiye ve sevgiliye koşan kendi başına bir yaratıcılıktır. Şiirleri Erbil kokar yumuşak saçının tellerini Altın Köprü suyuyla yıkamayı diler. Yüreği ise Gürgür Baba’dır Türkmen için yanar.
Nesrin Erbil, 1960 yılından sonra Irak’ta gelişen yeni Türk edebiyatı ve serbest şiir akımının en önde gelen temsilcisi olarak, büyük ilgi toplamıştır. Şiire karşı olan merak
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