This research has presented a solution to the problem faced by alloys: the corrosion problem, by reducing corrosion and enhancing protection by using an inhibitor (Schiff base). The inhibitor (Schiff base) was synthesized by reacting of the substrates materials (4-dimethylaminobenzaldehyde and 4-aminoantipyrine). It was diagnosed by infrared technology IR, where the IR spectrum and through the visible beams proved that the Schiff base was well formed and with high purity. The corrosion behavior of carbon steel and stainless steel in a saline medium (artificial seawater 3.5%NaCl) before and after using the inhibitor at four temperatures: 20, 30, 40, and 50 C° was studied by using three electrodes potentiostat. The corrosion behavior was studied by cathode and anode polarization through which all corrosion parameters were investigated which include: corrosion current icorr (1341× 10-7- 5393 × 10-9A/cm2), corrosion potential Ecorr (-1.031- -0.227 mV vs SCE) , corrosion rates CR (0.658-0.007 mm.y-1), inhibition efficiency %IE (92-98%), and energy activation barriers Ea (4.709-26.733 kJ/mole). The thermodynamic and kinetic properties of the corrosion behavior of these two metals under study, which include: enthalpy ∆H*(2.153-24.176 kJ/mole), entropy ∆S*(-197 -156 J/mole), and free Gibbs energy ∆G*(59.87-74.56 kJ/mole) before and after using the inhibitor, were also studied.
The emergence of e-marketing to make the world a small village does not comply with barriers, the place nor the time, which led to the transformation of marketing in various service sectors, regional and international general and the insurance sector, especially from traditional marketing to electronic marketing, bringing e-marketing of insurance services is the effective tool to achieve for growth, was able to jump to the overall marketing efforts to the contemporary trends in line with the current and its variables, and this significant acceleration in technological development has made insurance companies are racing to offer their insurance services on the latest applications of modern technology through multiple sites on the Internet
... Show Moreان حماية البيئة وتخفيض التكاليف من األهداف التي تسعى الوحدات االقتصادية الى تحقيقها لكي تتماشى مع التوجه العالمي لحماية الموارد الطبيعية وإنتاج منتجات صديقة للبيئة وفي الوقت نفسه التخلص من االلتزامات التي تتحملها الوحدات االقتصادية من تكاليف بيئية وغر امات مما يؤدي الى ارتفاع كلف االنتاج ، يهدف البحث الى دراسة المرتكزات المعرفية الستراتيجية اإلنتاج األنظف وتحديد التكاليف التي يمكن تخفيضها خالل مراحل اا
... Show MoreThe main target of this research is to follow the stages of the emergence of
the idea of republican form of government from its very beginning , yet there
were many elements from different estates thinker , educated , few of heads of
clans . This first opportunity for the mobilization of politically-minded people
with fundamental activity like najei shokat . hussain al-rahal notable poet maruf
al-rasafi those who formed what so called the political elite who believed in
constitutional , democratic parliamentary republic , one of them was al-rahal who
called for a constitutional republic even before the emergence of the
constitutional movement in Iran and ottoman empire (1908).
The holy najaf become cultural cen
في ظل التطورات التقنية التي حدثت خلال السنوات القليلة الماضية ومحاولة الإستفادة من تطور هذه التقنيات في مختلف مجالات الحياة، سعى العديد من منظمات الأعمال ـ بمختلف نشاطاتها وهياكلها القانونية ـ لتوظيف أعمالها بالإستفادة من تقنيات المعلومات ـ بمختلف أنواعهاـ وظهر مفهوم جديد في التعاملات أطلق عليه "التجارة الإلكترونية".وبما أن أية وحدة اقتصادية تعمل ضمن نظام مفتوح يؤثر و
... Show Moreהקדמה
המילה היא יחידה בסיסית ב שפה המתאפיינת בכך שיש לה משמעות ייחודית וביטוי פונטי )בשפה מדוברת (, גרפי
)בכתיבה( או מרחבי )בשפת סימנים. ובעיקר המונח מילה מתייחס ל שפות טבעיות או לשפות מתוכננות , אבל הוא קיים
גם בשפות מלאכותיות כגון שפות תכנות או שפות לוגיקה . בית היא מהמילות שראינו צריך לחקור אותה מתוך
משמצאנו בה מתפקידים גדולים בפעולה חשובה בתולדות הלשון עהברית שהיא התחדיש, פעולה זו שנכנסה לעברית אחרי
This research attempts to study Monetary system status and financing in the CIB through 4 sections, starting with the methodology and ending with conclusions and recommendations.
These two topics of Monetary and financing, that falls within the mandate of the CBI, are researched / studied relying on the resources and relevant literature. This research is a simple contribution, but meantime it is an honest attempt to elevate the effective role of the CBI which is considered one of the most pioneering central banks in the region.
بينت النظريات والمناهج النقدية الحديثة بعد تفعيلها لوسائل قراءة النص وتحليل عناصره وبيان وسائل تماسكه وروابطه فضلا عن تمثيله لمضامين مركزية ودلالات فرعية ان النصوص التراثية بوصفها نصوصا كاملة لسمات النص المؤثر قابلة للحضور في مجال المعرفة وفق تصور حديث يختلف عن تصور منتجهامنهجيا كما اتضح مدى عمق هذه النظريات والاسس التي ارساها بلاغيو العرب التي كانت ولاتزال محط انظار كبار النقاد وباحثي البلاغة.
Human wealth is the most valuable wealth on the face of the earth, and building the intellectual, cultural and scientific human being is the greatest process carried out by all religions and philosophies at all times, and the divine law aimed at reforming the earth, including in order to preserve this great wealth, and to preserve its existential and qualitative entity
Abstract The Kenyan policy towards Somalia was influenced by a set of interrelated factors between the two countries and stemmed from the internal environment and most prominent: the geographical factor, ethnic, cultural, religious, political, economic and security, has been dominated by this policy since independence from the British colonial administration in the sixties of the last century and so far the nature of instability and tension, As the two countries are geographically contiguous and as security risks escalate, Kenya in 2011 rushed military action against Somalia, the first military action by Kenya outside its borders since independence.
The science of exegesis was started by the first teacher, the Holy Prophet, and then further developed in various methods and approaches through history