The object of the function of respiration is to supply the animal with oxygen and to remove carbon dioxide. To attain this object the vertebrates are provided with a complicated mechanism of which the respiratory movements are an essential feature. The respiration appears as a continuous chain of rhythmically recurring cycles, each cycle consisting of two antagonistic movements, one which carri...

At present, great progress has been made in the prediction of undercompaction and fluid expansion overpressure. However, recent years, field frequently encountered pressure relief-type Different from primary overpressure, such as expansion, this type overpressure belongs to secondary which a certain concealment response seismic velocity logging data. Based on this, geological analysis model was...

The atomic force microscope (AFM) is a powerful instrument for nanolithography, which is well characterized in air where the deposition process is steered by capillary action. In contrast, AFM patterning has been seldom achieved in liquid, mostly via electrochemical deposition. This study investigates the pressure-controlled local deposition of nanoparticles in a liquid environment using a Flui...

In centrifugal microfluidics, dead volumes in valves downstream of mixing chambers can hardly be avoided. These dead volumes are excluded from mixing processes and hence cause a concentration gradient. Here we present a new bubble mixing concept which avoids such dead volumes. The mixing concept employs heating to create a temperature change rate (TCR) induced overpressure in the air volume dow...

Power transformer rupture and fire resulting from an arcing fault inside the tank usually leads to significant security risks and serious economic loss. In order to reveal the essence of tank deformation or explosion, this paper presents a 3-D numerical computational tool to simulate the structural dynamic behavior due to overpressure inside transformer tank. To illustrate the effectiveness of ...

[1] The construction of a large volcanic edifice at Earth’s surface generates stresses in the upper crust whose magnitude is comparable to those of tectonic stresses and overpressures within a magma chamber. We study how this affects eruption behavior. Analytical calculations are carried out in two dimensions for a cylindrical reservoir with an internal overpressure in an elastic half-space wit...

The risk of explosion can occur in all activities involving flammable substances which, when mixed with air, form an explosive atmosphere. Explosion protection is intended to prevent the ignition atmospheres. Pressurization, as a type protection, 'p' based on introduction protective gas (air or inert gas) enclosure formation atmosphere within by maintaining overpressure relative surrounding and...

The arrangement of obstacles can significantly impact the deflagration behavior combustible gases. In actual pipeline accident site, liquefied petroleum gas (LPG) and other gases often show non-uniform distribution after leakage owing to diffusion gravity, mechanism is also more complex. this paper, based on gases, flame overpressure characteristics LPG–air are carried out by a combination expe...

This study presents a numerical analysis to reduce the overpressure inside protective tunnels for external detonations. A three-dimensional computational fluid dynamics model of tunnel subjected detonation hemispherical charge with weight 555 kg and standoff distance 7.6 m was established, based on mesh sensitivity obtain an optimal element size, stability overpressure, validation evaluate accu...