Abstract The effect of four concentrations (0, 3, 1, 5%) the nanopesticide neem leaf extract was tested on stages hairy grain beetle at five time times (1, 2, 5, 7) days. results showed that there is Significant differences between three 5) compared to fourth concentration, which represents control treatment, where it noted hatching rate egg stage lowest 5% concentration. As for larva and pupal...

We study the problem of scheduling n jobs in a two-machine flow shop where the second machine is not available for processing during a given time interval. A resumable scenario is assumed, i.e if a job cannot be finished before the down period it is continued after the machine becomes available again. The objective is to minimize the makespan. The best fast approximation algorithm for this prob...

purpose: to evaluate refractive state in patients with unilateral congenital nasolacrimal duct obstruction. methods: in this descriptive prospective study, patients with unilateral congenital nasolacrimal duct obstruction scheduled for surgery were enrolled over a period of two years (2007-2009). cycloplegic refractive error in both eyes was measured under anesthesia before surgery (probing, si...