A theoretical and protection study was conducted of the corrosion behavior of carbon steel surface with different concentrations of the derivative (Quinolin-2-one), namly (1-Amino-4,7-dimethyl-6-nitro-1H-quinolin-2-one (ADNQ2O)). Theoretically, Density Functional Theory (DFT) of B3LYP/ 6-311++G (2d, 2p) level was used to calculate the optimized geometry, physical properties and chemical inhibition parameters, with the local reactivity to predict both the reactive centers and to locate the possible sites of nucleophilic and electrophilic attacks, in vacuum, and in two solvents (DMSO and H2O), all at the equilibrium geometry. Experimentally, the inhibition efficiencies (%IE) in the saline solution (of 3.5%) NaCl were studied using potentiometric polarization measurements. The results revealed that the (%IE) for carbon steel corrosion by ADNQ2O is (89.88%). The obtained thermodynamic parameters support the physical adsorption mechanism. The adsorption followed the Langmuir isotherm. The surface change on carbon steel was studied using SEM (Scanning Electron Microscopy).
الادب في اللغة ملكة تقصي من قامت به عن كل ما يشبنه
او هو حسن الخلق وفعل المكارم
او الظرف وحسن التناول
او الالتزام لما يندب له الانسان(1) .
وقد كثر استخدام هذه اللفظة في التراث فقيل ادب الطبيب ، وادب الوزير، وادب القاضي ، وادب المائدة ، وادب الخط ، وادب المعلم والمتعلم ، وادب المعلم في نفسه وفي درسه ،وادب المتعلم مع استاذه وادب البحث والدرس.
المتغير في النحت العراقي المعاصر
In 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.
This research to study the effectiveness of the reception in the interactive theatre revealed the impact of this receipt in the educational process, and has focused on regarding the role of interactive theatre in education, the role of the interactive receiver, and how this type of theater that have an impact on the process of learning and education aimed at the receiver positive actor, this research was to examine this in detail through theatrical prepared for this purpose with a group of students (fine arts Institute for girls/morning), and marking research under Address (effectively receive interactive theatre) as taken from the theme Finder receive education through theatre material for consideration, as follows:
- 1. Ch
الواقعية في قصص يهوشاع كتان
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 MoreThe current study aims to determine the extent of SOMO's interest in governance and whether this interest is sufficient to be reflected in enhancing its organizational reputation, and the field of research was in the oil marketing company SOMO. (109), (105) questionnaires were distributed, (94) forms and (11) forms were not retrieved, and the valid questionnaires had reached (91). The analytical and descriptive approach was used for the study, and the current research has found a positive impact of government on the reputation of the organization, and this research demonstrated the existence of the proposed relationship and the impact between governance and the reputation of the organization.
تدريس العلاقات الدولية في العراق