Abstract In this paper we study a leptophilic dark matter scenario involving feeble dark matter coupling to the Standard Model (SM) and compressed dark matter-mediator mass spectrum.We consider a simplified model where the SM is extended with one Majorana fermion, the dark matter, and one charged scalar, ovation toddler helmet the mediator, couplin
Due to a multiplicity of causes provoking traumatic brain injury (TBI), TBI is a highly heterogeneous pathology, characterized by high mortality and disability rates.TBI is an acute neurodegenerative event, potentially party favor display stands and unpredictably evolving into sub-chronic and chronic neurodegenerative events, with transient or perm
Understanding the WOB and the law of tubular buckling is significant to handle workover operation efficiently and safely.Based on the simulation theory and the characteristics of workover string dynamics,a finite element model is established for the workover string.Then,the tubular in the wellbore is simulated by tekoparta the model,and the simulat