SYNOPSIS. When the structures involved in digestive events in T. pyriformis are examined at the electron microscope level, some information is added to that long known from light microscopy. The food trapping mechanism consists of the three membranelles, undulating membrane, oral ribs, and a “valve” apparently closing the opening to the cytopharynx. Both of the latter structures are supported b...

The anatomy and function of the opening between the knee joint cavity and gastrocnemio-semimembranosus bursa was studied in 120 necropsy specimens of knee joints both by conventional knife dissection and by a newly modified technique of serial cryosectioning of undecalcified joints frozen at various angles of flexion. The communication invariably took the shape of a transverse slit separating t...

Functional mitral regurgitation (FMR) is frequent in patients with heart failure (HF). It develops as a consequence of left ventricle (LV) geometry alterations, causing imbalance between increased tethering forces and decreased closing forces exerted on the mitral valve apparatus during systole.FMR is known to change at rest and during effort, due to preload-afterload changes, myocardial ischem...

In two patients pulmonary air embolism was a complication of the implantation of a permanent transvenous cardiac pacemaker. One of these patients, in whom air embolism was documented by cinefluorograms, is described in detail. Cinefluorograms demonstrated air in the right ventricle and main pulmonary artery with clear visualization of the opening and closing of the pulmonary valve. Both patient...

Abstract Transient flow characteristics and dissipation mechanism in pressurized pipeline were investigated based on 1D friction models 3D turbulence models, where the pressure–density model was combined into continuity equation allowing for elasticity of fluid pipes. The applicability realizable k–ε SST (shear stress transport) k–ω verified with comparison to traditional water hammer experimen...

Abstract Aiming at the problems of high-altitude painting, an intelligent painting unmanned aerial vehicle (UAV) system, including hardware design and software implementation, has been developed. The system mainly includes three parts: drawer-type modular power supply, UAV control high airflow ultra-high-speed motor drive system. realization two thread high-voltage main solenoid valve for openi...

In this paper, the effect of the Intake Valve Deactivation (IVDA) on engine performance is investigated in detail. Based on an optimization platform with Genetic Algorithm (GA) and engine thermodynamic model, the characteristics of the engine volumetric efficiency and pumping loss were studied under the cam-drive, Single Intake Valve (SIV) and Dual Intake Valves (DIV) operating modes, and the e...