Gastroliths, where preserved, can provide indirect evidence regarding diet in extinct avian and non-avian dinosaurs.Masses of gastroliths consistent with the presence of a gastric mill are preserved in many Early Cretaceous Jehol birds mostly belonging to the Ornithuromorpha.Gastroliths are also present in basal birds Sapeornis and Jeholornis in wh
Paintings inevitably bear severe mechanical loads during transportation.Understanding the dynamic characteristics of paintings helps to avoid damage during transportation and to effectively slow down their aging.In this contribution, the vibration characteristics of canvas and primed canvas of paintings and their influencing factors are studied exp
Introduction Tries (from retrieval) are one of the most practical data structures with a tree construction in computer science.Tries store string data in leaves of tree.They are often used to store such data so that future retrieval can be made efficient.For example, tries are widely used in algorithms for automatically correcting words in texts.Th
Host plant resistance is an economic and environmental friendly method for controlling Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko).To evaluate resistance of 15 cultivars and advanced lines of wheat to RWA under field conditions, an experiment was conducted in a randomized complete block design with 4 replications in Mobarake region (Isfa