Diffraction-enhanced imaging (DEI) is a radiographic technique that derives contrast from an object's X-ray absorption, refraction gradient and small-angle scatter properties (extinction). The DEI imaging system prepares ...

Three exact solutions are obtained for flow through porous media, as governed by the Darcy–Lapwood–Brinkman model, for a given vorticity distribution. The resulting flow fields are identified as reversing flows; stagnation ...

The problem of flat plate solar energy collector with water flow is simulated and analyzed using computational fluid dynamics (CFD) software. The considered case includes the CFD modeling of solar irradiation and the modes ...

Pure cultures of 2-chlorophenol degrading bacteria were isolated from a natural enrichment that may be adapted to chlorophenols in the industrial zone at Umm-Saied city (Qatar). The bacteria were identified by 16S rDNA ...

Plant life and the life they support are being eliminated and cannot cope with the construction activities in Doha City. One of the most important reasons behind this study is the fast rate at which many habitats are ...

This paper discusses comprehensively the dynamic performance of the FACTS control devices in multiple operations, hardware needed to complement the simulated models. This paper also presents the schematic and basic control ...

عرف الباحثون والقراء محمد إقبال (1877-1983) أديباً وشاعرا وناقدا لتاريخ الفكر الإسلامي، وزعيماً من زعماء الإصلاح الديني، وفيلسوفا مدققاً ومحللاً للفكر الإسلامي والإنساني معا، وواضعا لفلسفة تأملية واضحة المعالم ثابتة الينيان، ...

هذا البحث يحتوي على مخطوط قيم كتبه الإمام البيهقي. وفي هذا المخطوط يوضح كيفية كان رسول الله صلى الله عليه وسلم يلبس خاتمه، ويقدم المخطوط إجابات لأسئلة مختلفة مثل: ١ – هل رسول الله صلى الله عليه وسلم اعتاد لبس خاتمه في أصابع ...

خاتمة: نتائج وتوصيات: بعد أن وصل البحث إلى نهايته، يكون من المتعين إيراد أهم النتائج والخلاصات وبعض التوصيات، ذات الأهمية البالغة في هذا الباب. أولا: هم النتائج و الأفكار الرئيسة: 1- إن الاختيار الناجح للزوجين سبب رئيس ...

Extensive field and laboratory testing programs were performed to develop a relationship between the permeability of a fractured limestone and the core recovery values. The studied limestone does not encompass any jointing ...