Hierarchy is one of the most conspicuous features of numerous natural, technological and social systems.The underlying structures are typically complex and their most relevant organizational principle is the ordering of the ties among the units abc material they are made of according to a network displaying hierarchical features.In spite of the abu
In cryogenic electron microscopy (cryo-EM) of radiation-sensitive biological samples, both the signal-to-noise ratio (SNR) and the contrast of images are critically important in the image-processing pipeline.Classic methods improve low-frequency image contrast experimentally, by imaging with high defocus, or computationally, by applying various typ
A numerical cubs foam finger study of high-speed (with the velocity of 250 m/s) impact of a liquid cone (cone-like jet) on a plain rigid wall has been performed.The range of the angles of inclination of the cone surface to the wall corresponds to that of their variation in the process of impact on the wall of a cylindrical jet with the semi-spheric