The dynamic response of a transducer array made up of circular flexural plates in immersion is analytically calculated. The calculation method includes three steps: (1) the calculation of parallel resonant frequency and the velocity profile of each plate, (2) the calculation of mutual acoustic impedance between the plates, and (3) the calculation of velocity response, including the mechanical a...

BACKGROUND Liquid needle-free injection devices (NFIDs) employ a high-velocity liquid jet to deliver drugs and vaccine through transdermal injection. NFIDs for animal vaccination are more complicated than those used for human beings for their much larger and more flexible power sources, as well as rapid, repetitive and continuous injection features. METHOD In the paper, spring-powered NFID is...

• In several investigations in the past, Wetterer and Pieper connected a sinusoidal piston pump to the arterial system of intact anesthetized dogs in order to produce slow oscillations of the mean arterial pressure upon which the arterial pressure pulsation was superimposed. Simultaneous measurements of various parameters permitted the calculation of the elasticity coefficient of the arterial r...

Ocular Perfusion Pressure: New Evidence  Ocular Perfusion Pressure and Glaucoma Progression  Definition and Calculation  Lower IOP improves OPP  Remains number 1 goal !!  Measure blood pressure on your patients  Higher systemic BP improves OPP, but you do not necessarily want to raise BP:  Nocturnal Hypotension and OPP  Avoiding IOP meds that LOWER systemic BP at night (beta blockers, a...

Based on statistical analysis on the situation of casing damage and water injection pressure in Pubei Oilfield, it shows that the main forms of casing damage in Pubei Oilfield are deformation and dislocation. Dip angle and faults have a significant impact on casing damage and casing damage is closely related to water injection pressure. Through laboratory simulating experiment and theoretical c...

Method: In this paper, the shallow formation around the borehole is divided into plastic zone and elastic zone considering it under nonuniform in-situ stress. The collapse pressure formula of shallow formation is derived by taking the shrinkage rate of the borehole as the instability criterion. The fracturing pressure calculation model of shallow sediment under non-uniform in-situ stress is der...

We repeat and correct the recent calculation of the thermodynamic potential of hot QCD in the limit of large number Nf of fermions. The new result for the thermal pressure turns out to agree significantly better with results obtained from perturbation theory at small coupling. For large coupling, a nonmonotonic behaviour is reproduced, but the pressure of the strongly coupled theory does not ex...

We repeat and correct the recent calculation of the thermodynamic potential of hot QCD in the limit of large number Nf of fermions. The new result for the thermal pressure turns out to agree significantly better with results obtained from perturbation theory at small coupling. For large coupling, a nonmonotonic behaviour is reproduced, but the pressure of the strongly coupled theory does not ex...