to study the effect of different weed control methods in tomato, an experiment was conducted as completely randomized block design with three replications at the research farm of university of tehran (karaj) in 2008. the treatments consisted of post emergence (at recommended rate) or pre emergence (reduced rate in combination with mulch) application of metribuzin, rimsulfuron and sulfosulfuron,...

in order to evaluate the response of emergence rate of oil seed rape seedlings to temperature, a pot experiment was conducted to assess the relationship between emergence rate of three rape seed cultivars (apetalous flower, rgs003 and syn3) by using a non-linear regression against temperature variation. six models (tooth shape, segmented, beta, curve, quadratic and cubic) were used and the supe...

background: strabismus surgery under general anesthesia is one of the most common ophthalmic procedures in children with emergence delirium as an important post-operative complication. additionally, postoperative pain is another important issue which is considered as a contributing factor to emergence delirium. we conducted a study to compare meperidine with paracetamol on postoperative pain an...