any language foremost is composed of words and words are one of the most important elements in conveying meaning and they have different diversities and levels in conveying this meaning. quranic words are not the exception; therefore, to discover and to understand the different levels of conveying meaning (exterior and inner) by words, the quran reader can be more aware of the meaning and the p...

Conveying hard and the abrasive materials has been one of the major operational problems in industrial situations. The erosion of plant components, especially the pipe bends by abrasive solid particles of a fluid stream makes installation of pneumatic conveying systems a very costly affair for industry. Most users have either lived with the problem or have employed expensive bend materials to r...