نتایج جستجو برای: square and circular tubes
تعداد نتایج: 16858420 فیلتر نتایج به سال:
This study reports an experimental investigation on the impact behavior of elliptical concrete-filled steel tubular (CFT) columns subjected to lateral loading. A total five CFT columns, including one circular cross-section and four cross-sections, were tested using a horizontal-impact-testing system. The influences velocity, times, geometry dynamic response analyzed. results have shown that spe...
esl/efl books play a crucial role in shaping language learners worldview of gender roles in society. the present study investigated the status of sexism in two sets of efl textbooks, one developed by non-native iranian authors (ili series) and the other by native authors (top notch series). first, two books from each series was selected randomly. then, a quantitative analysis was carried out wi...
Many patterns of ancient art and architecture have been designed based on religious beliefs and orders in the Indian continent. One of them is the wisdom of sacred art Vastu Purusha Mandala. This knowledge is related to square plan that has its roots in the ancient Indian religious texts that so called Vedas. The mandala has three main shapes: circle, square and triangle. Although the circle i...
Several designs for Fresnel zone plate lenses (FZPLs) to be used in conjunction with antenna-coupled infrared detectors have been fabricated and tested. The designs comprise square and circular FZPLs with different numbers of Fresnel zones working in transmissive or reflective modes designed to focus infrared energy on a square-spiral antenna connected to a microbolometer. A 163x maximum increa...
Providing comfort conditions for fish from the point of view of velocity uniformity and flow regime is one of the most important requirements of aquaculture improving the production conditions. In this research, for this purpose, by using computational fluid dynamics, Fluent software and k-ɛ turbulence model, the geometrical shape and pattern of water circulation in a fish breeding pond have be...
To the memory of Paul Erdd os and to his living heritage Abstract. An abelian square in a binary word is a pair of adjacent non-empty blocks of the same length, having the same number of 1s. An abelian circular square is an abelian square which is possibly wrapped around the word: the tail protruding from the right end of the word reappears at the left end. Two abelian circular squares are equi...
The application of stainless steel tubes in concrete-filled tube systems can significantly improve their corrosion resistance comparison with those that employ carbon tubes. In this paper, a series push-out tests were carried out to investigate the bond stress-slip behavior between and concrete. A total 14 square specimens tested, covering two cross-sectional width-thickness ratios (B/t = 30 50...
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