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).
The Arabs took care of the Arabic language, collected it, and set standards governing it; This is for fear of melody, in order to preserve the language of the Noble Qur’an from distortion, after many of those who are not fluent in Arabic entered Islam; There were many reasons for setting linguistic standards, but although scholars set these standards, we see them often deviate from them, as well as the language’s departure from these restrictions that they set, because language cannot be restricted, as it is subject to the law of use
اشكالية المواطنة في الخطاب الاسلامي المعاصر
Finance is the various forms of the basic components of the economies of the countries and playing the important role of developing of the social aspects and economic communities, and foreign trade in particular, its really important for countries because finance represent the largest share in the national income. Thus, finance became the important aspects for nations and how could be improved and ensure good reputation to it , Perhaps one of the most important insurance that seek to achieve is the funding guarantees through the intervention of financial institutions and most important banks, using a range of techniques and tools that today are among the most important foreign trade financing sources and the most important documentary cr
... Show MoreIslamic banking refers to a system of banking or banking activity that is consistent with the principles of the Shari'ah (Islamic rulings) and its practical application through the development of Islamic economics. The principles which emphasise moral and ethical values in all dealings have wide universal appeal. Shari'ah prohibits the payment or acceptance of interest charges (riba) for the lending and accepting of money, as well as carrying out trade and other activities that provide goods or services considered contrary to its principles. While these principles were used as the basis for a flourishing economy in earlier times, it is only in the late 20th century that a number of Islamic banks were formed to provide an alternative basi
... Show MoreSıfat - Fiillere Osmanlıcada fer’i fiil adı verilmektedir. Sıfat - fiiller için çeşitli kaynaklarda, kılın adı (kılın sanı[1]), ortaç[2], sıfat - fiil (sıfat - eylem[3]), partisip[4], isim - fiil[5] gibi terimler kullanılmıştır.
Sıfat - fiiller, isim- fiiler gibi fiilden türerler. Aldıkları belli başlı ekler vardır. Bu eklere sıfat - fiil ekleri denir.sıfat - fiiller, cümlede bir sıfat gibi görev yaparlar. Sıfatlar gibi isimlerin önün gelirler ve onları nitelerler tıpkı bir sıfat gibi ismin hal eklerini alab
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