نتایج جستجو برای: stress concentration factor
تعداد نتایج: 1568110 فیلتر نتایج به سال:
The purpose of this paper is to present a new method based on the regression analysis for estimating stress concentration factor different cutouts in orthotropic plates. existence an explicit relation terms mechanical properties can be approach analyzing viscoelastic Little research has been conducted provide relationships calculate theoretical concentration. In study first, using values compos...
s:2728:"Background: Rapid industrialization, environmental pollution, changing living conditions and unfavourable working conditions cause stress to the people which may play an important role in developing several disorders. Sress is one of the most important health and social problems. Physchological stress has long been suspected of having an important impact on infertility . There is a grea...
This study calculates the stress concentration factor of flat and curved PLA plate structures studies features surrounding holes structure. It is essential to understand behaviour 3D-printed plates around hole. Flat with 40 mm, 20 10 mm in diameter were investigated. With a 2.5 N/mm2 applied load plate, such models put through finite element analysis simulations using ANSYS investigate maximum ...
Stress is a suspected cause of depression. High cortisol concentration, a biomarker of an activated stress response, has been found in depressed patients. The aim of this study was to determine if a high level of salivary cortisol is a risk factor of depression. In 2007, we enrolled 4467 public employees. Morning and evening salivary cortisol concentration were measured for each participant. Pa...
background: despite the emerging evidence on beneficial effects of probiotics on the cardiovascular system, their impact on the management of ischemic heart diseases and its possible mechanism have not been elucidated. methods: four viable probiotics bacterial strains, including bifidobacterium breve, lactobacillus casei, lactobacillus bulgaricus and lactobacillus acidophilus, at the concentrat...
post-traumatic stress disorder (ptsd) is a syndrome causing from a severe traumatic happening that leads to threatened death or injury. ptsd is associated with changes in limbic, hippocampal, and prefrontal cortical region function due to changes in synaptogenesis, dendritic modifying, and neurogenesis. changes in neuron in ptsd patients result from pathophysiological disturbances in inflammato...
this study was aimed to assess of priming effects on soluble proteins and antioxidant enzymes of as a nigella sativa medicinal plant under different levels of salinity and drought. two greenhouse factorial experiments with three replicated randomized complete block design were conducted.treatments included five levels of priming (potassium nitrate 1% and salicylic acid 0.2 mm in 6 hours, potass...
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