نتایج جستجو برای: collapse load factor
تعداد نتایج: 1016251 فیلتر نتایج به سال:
در سالیان اخیر پدیده حزن انگیز گرد و غبار گاها آسمان غرب ایران را اشغال کرده و زندگی مردم را تحت تاثیرات زیانبار خود قرار داده است. پدیده گرد و غبار که به عنوان مهمترین معضل زیست محیطی کشور در دهه اخیر قلمداد می شود واجد طیف وسیعی از خسارات و اثرات منفی است که باعث گردیده این موضوع از یک شکل محلی به بحرانی بین المللی تبدیل شود. این پایان نامه به مقایسه خصوصیات فیزیکوشیمیایی ذرات گرد و غبار در...
Introduction: This study aimed to examine the factor structure, reliability and validity of the compassion competence scale. Methods: In a descriptive study with exploratory factor analysis, 330 nurses in government hospitals in Mashhad were selected by cluster sampling method and completed compassion competence scale (2010) and Professional Quality of Life Scale (2010). Data were analyzed by ...
Abstract To avoid brittle collapse of reinforced concrete (RC) structures, RC elements such as beams, columns, and shear walls are invited to ensure a minimum level ductility. In this paper, an analytical method for predicting the curvature ductility factor confined columns is developed. The stress–strain model provided by Eurocode 2 adopted, effective lateral confining pressure calculated acco...
The cGMP-dependent protein kinase type I (cGKI) has multiple functions including a role in axonal growth and pathfinding of sensory neurons, and counteracts Semaphorin 3A (Sema3A)-induced growth cone collapse. Within the nervous system, however, the transcriptional regulation of cGKI is still obscure. Recently, the transcription factor and tumor suppressor p53 has been reported to promote neuri...
To assess the performance criteria of the reinforced-concrete, five-storey residential buildings common in Iran, an experimental study in the structural laboratory of the University of Tehran has been conducted. The test program includes cyclic and monotonic load tests of six beams that represent three-to-five storey buildings with rigid frame structures. Using definitions given in FEMA-356 a...
In the recent years use of Special Protection Schemes due to impact of notable these schemes in improving the performance of power systems has found increasing usage. The purpose of this paper is design a suitable and fast special protection schemes to deal with extreme contingency that will led to collapse of power network if they occurred. So at the first, for a clear form of power tran...
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