Potentiostatic polarization and weight loss methods have been used to investigate the corrosion behavior of carbon steel in sodium chloride solution at different concentrations (0.1, 0.4 and 0.6) M under the influence of temperatures ( 293, 298, 303, 308 and 313) K. The inhibition efficiency of the amoxicillin drug on carbon steel in 0.6 M NaCl has also been studied based on concentration and temperature. The corrosion rate showed that all salt concentrations ( NaCl solution) resulted in corrosion of carbon steel in varying ratio and 0.6 M of salt solution was the highest rate (50.46 g/m².d). The results also indicate that the rate of corrosion increases at a temperature of 313 K.. Potentiodynamic polarization studies showed that the examined inhibitor suppress both anodic and cathodic process and behave as mixed type inhibitor. The adsorption of amoxicillin was found to obey Langmuir isotherm model. Arrhenius equation and transition state theory were used to calculate kinetic and thermodynamic parameter. Results obtained showed that corrosion reaction of carbon steel in NaCl is spontaneous and there is a good agreement between the data got from the both techniques employed. SEM analysis was performed to study the film persistency of the inhibitor.
The organization and development of the irrigation system and agrarian reform in Iraq had an impact on the diversity of its methods and uses
برزت الشخصانية في حقبة تاريخية كان فيها العالم و اوربا وفرنسا تشهد انتهاء حقبة حضارية امتدت من نهاية القرون الوسطى حتى اوائل القرن العشرين تميزت بكونها رأسمالية التركيب، ليبرالية المنهج، وبرجوازية القيم، جاءت الشخصانية ليس فقط محاولة للإجابة عن حقبة جديدة ولادة حضارة جديدة لاتزال غامضة المعالم فحسب انما ايضا كرد على المدرسة الماركسية المادية والوجودية الملحدة محددة هدفها الابعد بإعادة صنع النهضة
The insects like other creatures in the wide world, and there are more than a million class and type of these objects, some of which human haunted since the old to the present day.
In this study highlight the insect bee addressing her life and behavior, and the novelty of her and wonders what mystified by the minds of men that her world is full of mysteries and surprises drew the attention of workers in the natural history of the study and scrutiny of methods and different characteristics of scientists as she gives more than it takes. It appeared that the Islamic heritage has singled out these insects with something of interest and precise detail, but that God Almighty made suras from the Koran carrying insect name two Sura
... Show MoreThe current study aimed to know the reasons for the reluctance of
students to apply mathematics department in the Iraqi
universities. In order to achieve the objective of the study the
researchers a tool numbers of 4 - axes included 40 - paragraph,
distributed as follows:
- Set the first axis causes that relate to the student, the 14
paragraph.
- The second axis includes clauses concerning teacher and the
number of paragraphs of Article 9, paragraph.
- Axis III contains clauses concerning the nature of mathematics
and a number of paragraphs 11 paragraphs.
- The fourth, which included reasons related to classmates and
close and the number of paragraphs 6, paragraph.
The resolution offered on a group
Psychological Counseling Services occupies a high position in the developed countries and that for its psychologist services for different sectors of the community members, and has been popularized until recently the wrong concept of the effect, that the psychological service is provided only to the owners of behavior is normal only, Vantage him neglect to provide psychological services a large segment of the community members who are in dire need of these services.
The counseling service is part of a global social movement seeking to emphasize the quality of life of the human and the emphasis on the value and dign
... Show MoreThe research includes a bout IL- IQulle , and their role in scientific of the Islamic – Arabic civilization , for Dr. Khlood M.Namma the proff in the collage of education for woman , Baghdad university , History department .
دور الإدارة المصرفية الرشيدة في ضمان مخاطر الائتمان المصرفي
مشكلة البحث واهميته :
يعد الغضب من المظاهر الانفعالية الشائعة في مرحلة الطفولة المبكرة وذلك بسبب كثرة المواقف المثيرة لغضب الطفل في هذه المرحلة ، كما ان الطفل في هذه المرحلة سرعان ما يكتفي في كثير من الاحيان بان غضبه وبكائه طريقة سهلة للوصول الى ما يريد . ويعد المختصون في هذا المجال ، بان نوبات غضب الاطفال ، هي شيء عام طبيعي عند جميع الاطفال ، لكن عندما تكون نوبات عنيفة
... Show MoreIslam paid great attention to the youth, and took care of them because they
are the strength and movement, which is the preferrence stage in human life,
and they are the ones who
The development of drone technology in state of future warsDrones have recently imposed themselves as an effective multi-tasking weapon. States and armed groups have sought to possess them, due to their importance in delivering painful blows to the enemy at a low cost. This technology has played a prominent and varied role in many wars and stimulated countries to manufacture or obtain it