The flight mechanical model of tilt-rotor UAV is the basis of designing flight control rate and analyzing flight characteristics.Based on the engineering reality, the nonlinear flight mechanics model of a new configuration tilt-rotor UAV is set up.Features and advantages of the new type rotor-craft are analyzed compared with the traditional tilt-ro
Anticoagulant-related nephropathy (ARN) is a rare, newly recognized cause of acute kidney injury and significant but underdiagnosed complication of anticoagulation therapy.ARN occurs in patients taking oral anticoagulant therapy most Cards often warfarin or a novel oral anticoagulant (NOAC).It is a potentially devastating disorder with serious rena
In this Cards study, a new method for manipulating energy flow in a 3D vector field is proposed.In this method, an azimuthally-polarized beam with a noncanonical vortex, the X-type vortex, is focused in a high-numerical aperture system.It is found that, instead of the invariance of the energy flow which is characteristic of the traditional vortex (