In this paper, we investigate the dynamics of a discrete-time predator-prey system involving group defense.The existence and local stability shamrock belt buckle of positive fixed point of the discrete dynamical system is analyzed algebraically.It is shown that the system undergoes a flip bifurcation and a Neimark-Sacker bifurcation in the interior

Tick-borne haemoparasite Babesia gibsoni has been detected rarely in cats, in surveys of apparently healthy animals.In stored blood from a 6-year-old male-neutered domestic shorthair cat in Hong Kong, B.gibsoni DNA was detected retrospectively using PCR for Babesia spp.18S rRNA and mitochondrial cytochrome 5x4 tattoo B genes, followed by sequencing

To deal with train moen vichy bathroom faucet delays in large high-speed railway stations, a multi-objective mixed-integer nonlinear programming (MO-MINLP) optimization model was proposed.The model used the arrival time, departure time, track occupation, and route selection as the decision variables, and fully considered the station infrastructure