using cold working fastener holes is a simple life enhancement procedure that strengthens metallic components by retarding crack growth around a hole. in the present paper, the residual stress field that is induced by the hole expansion process is obtained based on different material models namely elastic perfect plastic, isotropic hardening and kinematic hardening using three-dimensional finit...

As a representative warm-season grass, Bermudagrass [Cynodon dactylon (L). Pers.] is widely used in turf systems. However, low temperature remarkably limits its growth and distribution. ABA is a crucial phytohormone that has been reported to regulate much important physiological and biochemical processes in plants under abiotic stress. Therefore, the objective of this study was to figure out th...

to evaluate the effects of accelerated aging and cold stress on seed germination and seedling growth indices in five oilseed rape cultivars (hyola330, hyola401, hyola420, syn3 and pr401/15e), an experiment was carried out in a completely randomized design of three replications. results indicated that the cultivars were significantly different in germination percentage, seed vigour, germination ...

background: polycystic ovary syndrome (pcos) is a common disorder of infertility which affects more than 100 million women. it is characterized by chronic anovulation, hyper androgenism and obesity. pcos is also associated with oxidative stress changes. objective: here, we aimed to investigate the level of antioxidants and oxidative stress in iranian women with pcos as a predictive factor for c...

Within the male reproductive system, oxidative stress (OS) has been identified as prevailing etiology of infertility. The effects reactive oxygen species (ROS) on fertility depend dimensions, “modus operandi” ROS and oxido-reduction potential (ORP) tract. Hereupon, for an adequate response to OS, cells our body are endowed with a well-sophisticated system defense in order be protected. Various ...

The expression of most life history traits, such as immunity, growth and the development of sexual signals, is negatively affected by high levels of oxidative stress. Dietary antioxidants can reduce oxidative stress and have therefore been the focus of numerous studies in behavioural and evolutionary ecology in the last few decades. Most of this research has focused on carotenoids, neglecting a...

Aim: Reactive oxygen species induce oxidative stress that may contribute to endothelial dysfunction. In addition to endogen antioxidants, adding antioxidants to diet has been used to reduce oxidative-stress-induced endothelial dysfunction. Resveratrol is a natural phytoalexin which has many eff ects including antioxidant activity. Th e aim of this study was to investigate whether resveratrol co...