Rock structures are subjected to cyclic tension-compression loading due to a blasting, earthquake, traffic and injection-production in underground storage case. Therefore study the fatigue behavior of rock samples under this type of loading is required. In this study, the accumulated fatigue damage for a Green Onyx rock sample which consisted of only one mineral composition with two-step high-l...

in this study, the hepatoprotective effect of the methanol extract of aerial parts (shoot) from otostegia persica boiss (golder) was investigated against the carbon tetrachloride (ccl4)-induced acute hepatotoxicity in male rats. liver damage was induced through the oral administration of 50% ccl4 in liquid paraffin (2.5 ml/kg bw, per os) 60 min after the administration of the methanol extract o...

Background: Varicoceles are the abnormal tortuosity and dilatation of the veins of the pampiniform plexus that drain the testis. Recently, studies evaluating the role of oxidative stress in male infertility have shown that infertile men with varicocele have elevated levels of sperm and testicular tissue-derived reactive oxygen species (ROS). Therefore current study was designed to evaluate prot...

background: oxidative stress in reproductive system leads to sperm dna damage and sperm membrane lipid peroxidation and may play an important role in the pathogenesis of male infertility, especially in idiopathic cases. antioxidants such as carotenoids function against free radical damages. objective : the aim of this study was to determine the levels of lycopene, beta-carotene and retinol in s...

objective(s) erythropoietin has been shown to exert neuroprotective effects in a variety of cns injury models. elevation of serum s100β, as a glial damage marker and myelin basic protein (mbp) has been reported to occur in acute carbon monoxide (co) poisoning. the aim of this study was to evaluate the effect of erythropoietin (epo) on serum s100β and mbp levels after co poisoning in rats. mater...

in this paper, a crack localization method for euler-bernoulli beams via an efficient static data based indicator is proposed. the crack in beams is simulated here using a triangular variation in the stiffness. static responses of a beam are obtained by the finite element modeling. in order to reduce the computational cost of damage detection method, the beam deflection is fitted through a poly...

results of damage prediction in buildings can be used as a useful tool for managing and decreasing seismic risk of earthquakes. in this study, damage spectrum and c4.5 decision tree algorithm were utilized for damage prediction in steel buildings during earthquakes. in order to prepare the damage spectrum, steel buildings were modeled as a single-degree-of-freedom (sdof) system and time-history...

one of the most important forms of preharvest damage to wheat is caused by sunn pests. the insects insert their mouth parts into the immature grain and while injecting their saliva suck the milky juices. flour from damaged wheat results in low baking performance due to the bug proteolytic enzymes’ injected which cause the breakdown of gluten structure in the dough. in the present study three wh...