Theoretical analysis and numerical simulation were conducted to study the disaster-causing mechanism of structural instability overlying strata induced by water–rock coupling effectively prevent control powered support jammed accident during mining below unconsolidated confined aquifer. The influencing factors on stability structure analyzed, method aquifer was designed. evolution process stres...

abstract to study the effects of four types of mulches including wood chips, municipal compost, sawdust and gravel in three different thicknesses on growth of platanus orientalis during two years, an experiment was conducted in mashhad area with semi-arid climate. the research was conducted as split plot based on a completely randomized block design with four replications. treatments included c...

Plant spacing and nitrogen are the most important factors for increasing tuberose quality and quantity. In this study, field experiment carried out as factorial Randomized Completely Block Design (RCBD) in 3 replications. Different levels of nitrogen (0, 50, 100, 150, 200, 250 kg/ha) of ammonium nitrate was used. Second factor was different plant spaces (10, 15, 20 and 25 cm). Results showed th...

the present study evaluated the effects of different dosages herbicides oxyfluorfen and trifluralin on crop properties of garlic, including plant height, number of cloves per bulbs as well as economical and biological yield of garlic. in this research, a randomized complete block design, with seven treatments and three replications, along with a control sample (weeding and no weed control), was...

in order to study the effect of planting arrangements and water quantities in drip irrigation onyield of maize, an experiment was carried out using a spilt block based on randomizedcomplete block design for three years (2006-09) in moghan. the factorial experiment hadthree planting densities (75000, 85000 and 95000 plants per hectare ) with one- and two-rowscultivation (b1= one row cultivation ...