Abstract Background The adjustment of sex ratios in birds can occur at the egg and nestling stages.Previous studies showed that the sex ratio was affected by environmental factors and parental condition; it may result in seasonal and ecosystem differences.Methods In this study, T-shirts the brood sex ratio of the Yellow-bellied Prinia (Prinia flavi

The world-wide cement industry is seeking Lighters experimental avenues that will lead to cement production that is less energy-intensive, less damaging to the surrounding environment and less prolific in GHG emissions.In Spain and Europe in general, this approach is wholly consistent with the concept of sustainability and compliance with the Kyoto

It is often the case that data used for the systems reliability assessment comes from more than one information source.Whether they are power plants at different geographical locations, gas transmission pipelines operating in different environment or power transmission networks deployed within various areas.Therefore, different operating conditions

Groundwater is used for drinking, household and agricultural activities by the growers surrounding Erbil city.Therefore, it was necessary to Lighters determine its quality by measuring physical and chemical parameters according to standard method.Thus, water samples have been collected from sixteen wells during December 2016, March, Jun, and Septem

Abstract : In this paper , Arm Slings we apply the stochastic dynamic programming to approximate the mean project completion time in dynamic Markov PERT networks.It is assumed that the activity durations are independent random variables with exponential distributions, but some social and economical problems influence the mean of activity durations.