During polymer melt extrusion from a circular nozzle, the extrudate toddler shoes at low flow rate shows a stable linear shape with smooth surface but the extrudate at higher flow rate shows unstable shapes with spiral, rosary, or zig-zag structures.This phenomenon is known as melt fracture and hampers high throughput production in polymer processi
Unman aerial vehicle (UAV) LiDAR has been widely used in the field of forestry.Individual tree extraction is a key step for forest inventory.Although many individual tree extraction methods have been proposed, the individual tree extraction accuracy is still low due to the complex forest environments.Moreover, many parameters in these methods gener
In recent years, there is a great interest in many countries to use the limestone powder in produce concrete by the replacing it as a proportion of cement weight able to improving the properties Winter of the concrete as well as this type of powder lead to the reducing concrete cost and the CO2 emissions through the process of cement industry.This
Three new species and toddler shoes two new genera are described within the wasp family Ichneumonidae from Late Cretaceous (Campanian) amber collected at the Grassy Lake locality in Alberta, Canada.New taxa include Pareubaeus rasnitsyni n.gen.et sp.and P.incertus n.sp.within the subfamily Labenopimplinae, and Albertocryptus dossenus n.gen.et sp.wit
Bacteria, which prey on other microorganisms, are commonly found in the environment.While some of these organisms act as solitary hunters, others band together in large consortia before they Waffle Makers attack their prey.Anecdotal reports suggest that bacteria practicing such a wolfpack strategy utilize antibiotics as predatory weapons.Consistent