purpose the aim of this study was to investigat the offensive efficiency of the professional handball players forming the front and rear lines. methods our investigation was carried out on four matches (final, semi-finals and classifying match) at the 19th male handball world championship “tunisia 2005”. finalist teams were tunisia, france, croatia, and spain. matches were recorded using 5 digi...

Since crazes have a porous structure in the order of tens nanometers, if they could be generated periodically polyacrylonitrile (PAN), which is raw material for carbon fiber, we can create new materials (e.g., films with periodic layers). However, according to Wu, PAN polymer that predominant yield behavior than craze behavior. Therefore, this study, generate polymers behavior, such as PAN, use...

The fracture behavior of highly cross-linked epoxy resin under plane strain conditions for crack tip rates spanning over four orders magnitude (10-4 −10-1 s−1) has been examined. toughness initially decreases with increasing rate (∊̇tip) and saturates at ∼ 0.8 MPa-m−0.5 after ∊̇tip 0.02 s−1 is attained. For all the specimens, a process zone (FPZ) forms ahead sharp pre-crack prior to catastrophic ...

we assessed the size and composition of the soil seed bank and above-ground vegetation in 52 relevés representing a range of habitats within an old- growth, temperate deciduous forest at hyrcanian region, northern iran. we identified 63 taxa in the seed bank, with an average density of 4202 seeds/spores per m2 by seedling emergence method. hypericum androsaemum, cardamine impatiens, and rub...

objective(s): artemisia is a genus of herbs and small shrubs forms an important part of natural vegetation in iran. it has been reported that several artemisia species possess anti-proliferative effects. considering the value of this genus in anti-cancer researches we have chosen artemisia biennis for cytotoxic and mechanistic studies. materials and methods:in this study we have investigated th...