This research work involves the preparation of nano activated carbonand macro activated carbon from corn seeds with a various mixing ratio ofpotassium hydroxide (1:0, 1:0.2, 1:0.4, 1:0.6, 1:0.8 and 1:1) % using thermaland micro radiation carbonization to identify the best mixing ratio. At studyto confirmed that the efficiency and effectiveness of the prepared of activatedcarbon samples increase when ratio potassium hydroxide increase with athermal and micro radiation carbonization was used. The study of samplesexternal surface area was performed via studying the adsorption of methyleneblue from their aqueous solution, also measured the internal surface area wasperformed via studying the adsorption of iodine from their aqueous solution.Measurement of density and humidity content were also been studied. Todetermine the efficiency and effectivity prepared samples. The samples werecharacterized by atomic force microscope (AFM), scanning electronmicroscopy (SEM)
الحمد لله رب العالمين والصلاة والسلام على نبينا محمد صلى الله عليه وآله وصحبه وسلم اجميعن.
وبعد...
فان من أعظم مظاهر اعجازه البياني ذلك التشابه العجيب بين كثير من آياته ، وقد اكتفيت في هذا البحث عن موضوعين ، وقد بينت التشابه بوصف اللفظي حتى لا ينصرف الذهن الى المتشابه المقابل للمحكم ، وقد اظهر البحث سمة الترتيب ، ولاسيما الترتيب داخل الجملة ، ويتضح ذلك في موضوع التقديم والتأخير بين الجمل في ا
... Show Moreسارت اليهودية على نهج التوحيد بعدما بعث الله تعالى موسى (عليه السلام) ليبلغهم رسالات ربهم، ليكونوا على هدى وصراط قويم، غير أن القوم لم يستقيموا على ذلك الصراط" فبدلوا وأولوا وتمردوا على موسى (عليه السلام) وصوروا الرب حسب أهواء أنفسهم لأنهم جبلوا على حب المادة والإيمان بالمشهود، فصوروا الرب بصور عدة بما يتماشى مع ما الفت عليهم نفوسهم .
الأسطورة ذلك العالم الغريب المجهول الذي يرويه الناس بعضهم يؤمنون به وآخر يبقى بعيد الصلة عنه ولكن لا يمكن أن يشكك به وبما يعتقد به البعض الآخر، تبقى متوارثة من جيل لجيل حتى تتذكر جزئياً أو كلياً وحسب ثقافة الكائن البشري. وفي معطيات كثيرة نجد الإنسان لا يتوانى أن يوعز تلك الأشياء إلى مجهول مسيطر ومهيمن، يستطيع أن يكون متحرراً من كثير من الالتزامات والإشكالات التي يعاني منها الإنسان، وهو في هذا إنما ينتمي أو ي
... Show MoreA paraffin wax and copper foam matrix were used as a thermal energy storage material in the double passes air solar chimney (SC) collector to get ventilation effect through daytime and after sunset. Air SC collector was installed in the south wall of an insulated test room and tested with different working angles (30o, 45o and 60o). Different SC types were used; single pass, double passes flat plate collector and double pass thermal energy storage box collector (TESB). A computational model based on the finite volume method for transient tw dimensional domains was carried out to describe the heat transfer and storage in the thermal energy storage material of collector. Also, equivalent specific heat metho
... Show MoreConsidering the magnitude of its economic, social and political impact, unemployment represents a crucial challenge confronting the majority of the countries of the world. The problem of the study was the high rates of unemployment in Sudan and the inability of economic growth rates to keep pace with the steady increases in unemployment rates during the study period. This study aimed to identify the economic and social variables influencing unemployment rate in Sudan, in addition to measuring the impact of these variables over the period (1981-2015). Data were collected from databases of the World Bank and Atlas of the World's data .The study hypothesized the presence of statistically significant and direct relationship between u
... Show MoreKnowing the conduct of the common stocks during the different intervals of time (quarterly and yearly) is an important step in choosing and administrating the portfolio of common stocks which be in accordance with the tendency of the investor toward risk and revenues. This is an attempt to understand the behavior of this common stocks in Amman stock Exchange to discover the extent of change in its behavior for employing them by the managers in identifying the accurate and beneficed investments , which meet the ambitions of Arab investor.
Reliability has an important role in both the industrial and engineering applications. So the need for Reliability Tests appeared are series of tests a discover out of factors that appear through the test, knowledge limit of fit a specifics production addition for getting on goodness of production.
Therefore, the need for research to test for censor data from ( Type II ) for exponential distribution with one parameter and that test it’s (Reliability Growth) includes three curves are Idealized Growth curve estimation parameters and reliability with maximum likelihood method, Duane Growth curve takes estimation parameters and reliability with least squares method, Exponential Reliability Growth Cur
... Show MoreAbstract
The health section is considered to be one of the most important section in the field of service economical and social unit because of its concern in the life of human begin and society and the process of determining t
... Show More