Pipe systems are commonly used in the process and power industries to transport fluid from one terminal others. Propagation behaviour of lateral flexural waves a pipe coupled with periodic rack structure is investigated. The pipe-rack system considered this study practical case realized as on elastic supports, while simple without supports represents special cases when stiffness leads extreme v...

In this paper we investigate the interaction between the accelerator muscle (the muscle that powers tongue projection) and the entoglossal process (the tongue's skeletal support) that occurs during tongue projection in chamaeleonid lizards. Previous work has shown that there is a delay of about 185 ms between the onset of accelerator muscle activity and the onset of tongue projection. In conjun...

A 20-year-old motorcycle messenger crashed into a truck transporting structural pipes. Accidentally a 3 cm diameter pipe penetrated his right inferior orbit and soft tissue below the left posterior lateral neck. When he arrived at the emergency room, there was a blunt wound with active bleeding in his right zygoma and haematoma in his left neck. On CT the metallic pipe passed through the inferi...

Abstract As femtosecond (fs) laser machining advances from micro/nanoscale to macroscale, approaches capable of macroscale geometries that sustain precisions are in great demand. In this research, an fs sharp shaping approach was developed address two key challenges (i.e. defects on edges and tapered sidewalls). The evolution edge sharpness (edge transition width) sidewall tapers were systemati...

Culex quinquefasciatus Say mosquitoes flourish in belowground stormwater systems in the southern United States. Recent evidence suggests that oviposition-site-seeking females may have difficulties locating, entering, and ovipositing inside permanent water chambers when surface entry through pickholes in manhole covers are sealed. It remains unknown, however, if newly emerged adults are able to ...

Abstract The article presents an investigation of the stabilization a cantilever pipe discharging fluid using electromagnetic actuators transformer type. With flow velocity reaching critical value, straight equilibrium position becomes unstable, and self-excited lateral vibrations arise. Supplying voltage to yields two opposite effects. First, each attracts pipe, thus introduces effect negative...

This work aimed to test the feasibility, both experimentally and numerically, of a novel concept for robust Wave Energy Converter (WEC) operating in near-shore region. The converter uses series non-return valves, constrained by tapered pipe, where incoming wave builds up pressure each compartment finally drives turbine onshore with pressurised water. device is at remote communities, gain energy...

Identifying the functional and mechanical limitations of single tooth implant systems is essential for the long-term success of the restoration. Three designs with different prosthetic connections were evaluated with their corresponding single tooth abutments for structural integrity and cyclic fatigue. The internal implant octagon was the weakest connection under off-axis impact loading and la...

in this paper, a novel technique on friction aided deep drawing using tapered blank holder divided into eight segments is proposed to overcome defect of friction aided deep drawing using four segments tapered blank holder technique. a taper blank holder is designed to be of two parts: stationary part with 5 degree taper angle and moving parts divided into eight tapered segments. the main functi...