Piezo technology is used in a large number of sectors thanks to the possibility switching between electrical energy and motion energy. In particular, provides an important advantage pneumatic applications with its features such as low consumption, accuracy, quiet operation, compact structure, fast possibility, operation lightness. Directional control, proportional pressure flow positioning, sof...

Local scour around a cylindrical pier in a channel with an erodible bed or natural bed is a common problems in bridge or pile supported structure. The highly unsteady complex flow field around a circular pier produces scour hole mainly for the presence of vortices. The main mechanism that drives the formation and evolution of the scour hole around bridge pier is horse shoe vortex motion. In the...

general kind of encroachment of river is constructing a bridge on it. purpose of encroachment of river is occupation part of river and flood plain for constructing bridge. often being economical of bridge innovation affirmated that most of encroachment take place to river and flood plain, which this encroachment can be in form of embankment in flood plain of river or into the main bed of river ...

Using a wireless sensor network, variety applications are being developed. In this paper, considering the field of military surveillance and reconnaissance sensors in the network for network configuration in the clustering method to elect a cluster head is about technology. Clustering of a sensor nodes elect to cluster head from among the sensor nodes and cluster heads to the sink node is confi...

This paper aims to study the internal aerodynamics of a Miller cycle gasoline engine. uses an over-expanded stroke recover more work, for same amount fuel, than classical Otto cycle. To achieve this, effective compression is made smaller expansion one by closing intake valves prematurely. The in-cylinder tumble flow then stops being driven valve jet before piston reaches bottom dead center, whi...

In this work, we present and analyse the flow-sensing part of a recently-developed multisensor in LTCC (lowtemperature co-fired ceramic) technology; this device integrates flow / pressure / temperature sensing and is designed for diagnostics monitoring of standard industrial compressed air circuits and devices such as valves and actuators. In this prototype, flow is sensed using the constant-te...

Background: Cardiac murmur and subsequently cardiac failure is one of the poor-performance causes in athletic horses. Attention to murmur character is vital during heart examination. Polo is a sport which demands very high stress on horses, which may result in more stress on cardiovascular system. Objectives: In this study we assume that high pressure on polo horses makes them more susceptible ...

Abstract The poppet valve is by far the most widely used in cylinder head design of internal combustion (IC) engines; however, valves themselves create significant flow restrictions during both intake and exhaust strokes, thus causing a reduction volumetric efficiency that affects overall engine performance. By removing restrictive from path air into out allowing to unobstructed, any given IC c...