Stress and chronic pain have been shown to prevent the development of tolerance to morphine analgesia, which appears to be related to neuroendocrine activity and alternation in neurochemicals. Also the involvement of nitric oxide (NO) has been implicated in tolerance to morphine analgesia. In our pervious study, we showed that co-administration of swim stress (ss) with chronic morphine, prevent...

Introduction. The professional education can be a very stressful experience. The high level of stress often leads to disruptions in physiological and psychological health. Although a moderate degree of stress can promote students’ creativity and achievement, the intense pressures and relentless demands of medical education may destroy personal relationship and ultimately, affect patient care. ...

background: a cross sectional study was conducted to determine the association between occupational stress risk factors and salivary alpha-amylase activity levels among fresh fruit bunch (ffb) cutters at oil palm plantation.  methods: a total of 109 ffb cutters were selected from two oil palm plantations in pulau carey, selangor at west coast of malaysia in 2015. questionnaires were used to det...

The construction of high-speed railways in cold regions needs to consider the effects freeze–thaw cycles (FTHs) on long-term deformation subgrades. However, at present, research creep characteristics frozen–thawed rocks and soils is not extensive. In limited studies soil properties, current focuses more high stress–strain–time responses, but for subgrades, inner stress usually low. This paper p...

to study the impact of iron nanoparticles foliar application on mitigating the effects of drought stress on yield, yield components and  oil percentage of goldasht spring safflower cultivar, an experiment was carried out in 2012 in the agricultural research farm station of islamic azad university, roudehen branch as split plot in a completely randomized blocks design with three replications. in...