نتایج جستجو برای: time history
تعداد نتایج: 2179741 فیلتر نتایج به سال:
Many existing bridges were designed without adequate consideration of seismic risk. The full or partial collapse of even one major bridge in a city or community would have destroying results. There has been focuses on developing fragility-based seismic vulnerability of existing usual bridges in Iran or support decision making on seismic upgrade. This article focuses on developing performance b...
Introduction: Iron deficiency anemia is an important limiting factor for the number of donations in regular donors. Limited data is available on the iron status in Iranian donors. This study was conduced to evaluate the prevalence of iron deficiency and its related factors in blood donors at Shiraz blood transfusion centre in 2005. Methods: This descriptive study was done on all blood donors ...
Various methods have been presented to improve the performance of buildings against earthquakes. Friction damper device is one of the energy dissipation devices that appropriately absorbs and dissipates the input energy and decreases displacements. In this paper, the possibility of using endurance time method to determine the efficiency index and optimum slip load for these dampers was investig...
the artificial accelerograms have been developed for assessing the dynamic response ofstructures. considering seismological properties of the site are necessary for the best simulation ofaccelerograms. the real recorded accelergrams for simulating earthquake phenomenon are used in thearma model. this is due to the fact that the arma model can be considered more advantageous than theothers.in th...
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