نتایج جستجو برای: pre stressing
تعداد نتایج: 315185 فیلتر نتایج به سال:
A conserved response to stress involves endonucleolytic cleavage of cytoplasmic transfer RNAs (tRNAs) by ribonucleases that are normally secreted or sequestered. Ribonuclease activation or release is an intriguing new aspect of cellular stress responses, with a potential impact on translation, apoptosis, cancer, and disease progression.
In this issue of Neuron, Hultman et al. (2016) find that stress-induced abnormal social behavior reflects aberrant prefrontal regulation of downstream limbic networks. This illustrates how linking aberrant network dynamics to neuropsychiatric disorders may lead to new circuit-based therapeutic interventions.
Introduction: Clinical education is a complicated process which is affected by several factors and variables. Thus the aim of this study was to determine the stressing factors in clinical education from the viewpoints of students of Boushehr University of Medical Sciences. Methods: In this descriptive cross-sectional study, 334 students of Boushehr University of Medical Sciences were selected t...
Abstract Previous research has evidenced that by adding a ductile reinforcement on the tension side of glass beam, for instance adhesive bonding, its post-cracking behaviour and redundancy were improved, while an additional pre-stressing this further helped to increase initial cracking resistance. Past investigations used steel tendons or stainless strips, which required rather complex setups p...
Understanding the mechanical degradation of microelectronic solder joints under high electric current stressing is an important step to develop a damage mechanics model in order to predict the reliability of a solder joint under such loading. In this paper, the experiment results for flip chip solder joints under high current stressing are reported. Nanoindentation tests suggest that mechanical...
This article considers the seismic behavior of beam-to-column joints in steel frames for different bolt arrangements by using of finite element modeling. As the most important beam-to-column joint type, the beam-to-column joints with end-plate is chosen for the analysis. Four different specimens have been analyzed. These models had some differences such as bolt arrangement and the presence or a...
The paper considers models of monolithic flat floor slabs with five spans in both directions. cell sizes are 6×6m, 6×9m, and 6×12m. calculation method is based on the application temperature load rope modeling rod elements. It shown that post-stressing should be used for slab side lengths over 7 m, as installation pre-stressed reinforcement shorter less feasible causes high economic costs.
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