This research aims to investigate and evaluate a reactive powder concrete (RPC) cast using economical materials. Its mechanical properties were investigated and evaluated by studying the effects of using different cement and silica fume contents and locally steel fibers aspect ratios as reinforcement for this concrete. A compressive strength of about 155.2MPa, indirect tensile strength of 16.0MPa, modulus of elasticity of 48.7GPa, flexural strength of 43.5MPa, impact energy of 3294.4kN.m and abrasion loss 0.59%  have been achieved for reinforced RPC contains  910 kg/m³ cement content, silica fume content 185 kg/m³ of cement weight and fiber volume fraction 2%. The water absorption values w

This study has been developed axes of the search, including: Search (deliberative) language and idiomatically, and Description Language (b social phenomenon), and the definition of the theory of (acts of speech), and discussed the problem of the conflict between tradition and innovation, as defined objectively have a target aimed at reviving the deliberative thought when Arab scholars , and the balance between the actual done Arab and Western rhetoric, but Meet in intellectual necessity, a sober reading that preserve the Arab language prestige, and its position in the light of the growing tongue Sciences, as long as we have inherited minds unique, and heritage huge able to consolidate the Arab theory lingual in linguistics.

الدخول للموضوع: الحاجة لمواجهة التعقيد

تتناول هذه الورقة الفكرية فلسفة الادارة الجديدة وتطبيقاتها عبر ما يسمى "الادارة بالقيم" – MBV- (Management by values) التي تستند على الاحتياجات الحالية لبيئة المنظمات. ففي بحث (Dolan & Michley, 2006)، واستناداًَ لخبراتهما وممارساتهما اقترحا نموذج القيم ثلاثي المحاور (Tri- axial values model)، وهي: المادية- الذرائعية

This study reveals important aspects of Ibn Tulun approach in this book through reading and scrutinizing the texts that had a direct or indirect relationship with this topic, as his study was not an easy thing, especially as it depends on the deduction of intellectual trends in his approach and his dealings with the texts of this topic In his directions and his architectural and service idea and highlighting its basic aspects as part of the plans of the Islamic city and its connection with the cultural heritage at the time.

خص ابن الجزري في كتابه هذا قراء واسط بمجموعه من التراجم التي قدمها وفق صياغات  منهجية منوعه اعتمدت على الأسس والضوابط التي التزم بها في تقديم تلك التراجم الخاصة بقراء واسط بصورة خاصة  والتراجم الأخرى بصورة عامه مشيرا إليها من خلال بعض الصياغات الفنية في الروايات التي كان لها أثرها في البناء الفكري للتراث .

In the present research we the study the deposition of radioactive elements naturally and particularly radioactive radon gas in parts of the body of organisms which are of direct relevance to human life in the city of Baghdad as the samples which were collected from the bones and skin of some kinds of birds and chicken based on the principle that radioactive elements are concentrated always on the bones. We use of this as the exercise detector impact nuclear (CR-39), using the technology Cylindrical diffusion , the results indicated that the largest concentration of radon found in the bone bird Seagull tapered as it was (625 ± 37) Bq.cm-3, and less concentration of radon gas in the chicken bones of Al-kafeel as it was (105 ± 10) Bq.c

This effort is related to describe and assess the performance of the Iraqi cement sample planned for oil well-cementing jobs in Iraq. In this paper, major cementing properties which are thickening time, compressive strength, and free water in addition to the rheological properties and filtration of cement slurry underneath definite circumstances are experimentally tested. The consequences point to that the Iraqi cement after special additives encounter the requests of the API standards and can consequently is used in cementing jobs for oil wells. At this research, there is a comparative investigation established on experimental work on the effectiveness of some additives that considered as waste materials which are silica fume, baux

This effort is related to describe and assess the performance of the Iraqi cement sample planned for oil well-cementing jobs in Iraq. In this paper, major cementing properties which are thickening time, compressive strength, and free water in addition to the rheological properties and filtration of cement slurry underneath definite circumstances are experimentally tested. The consequences point to that the Iraqi cement after special additives encounter the requests of the API standards and can consequently is used in cementing jobs for oil wells. At this research, there is a comparative investigation established on experimental work on the effectiveness of some additives that considered as waste materials which are silica fume, bauxite,