A carbon-supersaturated (CS-) high-speed steel punch was STATIONARY prepared using low-temperature plasma carburizing for fine blanking of pure titanium plates.The bare high-speed steel punch was also prepared as a reference to describe the adhesion and abrasive galling in the fine blanking of the titanium plates, even in a single shot.The CS-punch
An instance of a balanced optimization problem with vector costs consists of a ground set X, a cost-vector Neff I96BMV5N5B 90cm Stainless Steel Island Cooker Hood for every element of X, and a system of feasible subsets over X.The goal is to find a feasible subset that minimizes the so-called imbalance of values in every coordinate of the underlyin
A commonly held view in evolutionary biology is that speciation (the emergence of genetically distinct and reproductively incompatible subpopulations) is driven by external environmental constraints, such as localized barriers to dispersal or habitat-based variation in selection pressures.We have developed a spatially explicit model of a biological
Abstract Dynamic networks are networks with temporal relationship features which evolve over time by the inclusion and deletion of nodes and edges.Suppressing the epidemic spreading in such networks is quite challenging.The problem of protecting a limited number of nodes to restrain the spreading of malicious attacks or dangerous rumor in the netwo