This study investigated the influence of nanoclay on the impact damage resistance of glass fiber-epoxy composites under high velocity ice impact loading. Addition of 0.5 wt. % nanoclay into epoxy was shown to improve damage resistance compared to composite plates having no nanoclay platelet. The glass fiber-epoxy composites containing nanoclay brought about substantial improvement in ice impact...

self-desiccation is the major source of autogenous shrinkage and crack formation in low water-binder ratio (w/b) concretes which can be reduced by internal curing. in this paper performance of high strength self consolidating concrete (hs-scc) with w/b of 0.28 and 0.33 including autogenous shrinkage, drying shrinkage, compressive strength, and resistance to freezing-thawing was investigated. th...

background urinary tract infection (uti) is one of the most common bacterial diseasesworldwidethat can be presented asymptomatic or symptomatic, characterized by a wide range of symptoms from mild irritative voiding to bacteremia, sepsis, or even death. in latter decades, widespread utilization of antibiotics has resulted in increased incidence of antibiotic resistance among urinary tract patho...

background and aims: to evaluate the effect of temperature on wheat streak mosaic virus (wsmv) resistance phenotype, through total protein, phenol, and peroxidase activity in bread wheat, a factorial experiment was conducted using adl-cross (resistant) and marvdasht (susceptible) cultivars. materials and methods: results showed that incubation at 32c changed the gene expression for resistance ...

tuberculosis is one of the most important infectious diseases and a major cause of morbidity and mortality in developing countries. multi drug resistant tuberculosis is a new threat, which can result in a high case fatality rate. this study was conducted to define the incidence of multidrug resistant tuberculosis in kermanshah. ­antibiogram was performed on­­ pcr-confirmed isolates of mycobacte...