Abstract Background Karst areas in southwestern China exhibit ecological degradation in the form of rocky desertification.Local governments launched large-scale afforestation and other ecological restoration programs to curb this trend.Soil thickness is a key limiting factor for vegetation restoration in Karst areas, but the relationship between ec
The dynamic performance of three slab ballastless tracks in the China Railway Track System (CRTS), which is supported by a simply supported box girder under various train loads, were comprehensively investigated with refined rigid-flexible coupled models.A refined rigid-flexible coupled model of vehicle-multi layer track-bridge system was developed
Abstract In honey bees and many other social insects, production of queens is a vital task, as colony fitness is dependent on queens.The factors considered by honey bee workers in selecting larvae to rear new queens during emergency queen rearing are poorly understood.Identifying these parameters is critical, both in an evolutionary and apicultural