The scope of new investigations made it desirable to use a Warburg apparatus for 32 manometers instead of 14, as usual in our laboratory. A circular thermostat was chosen for this apparatus. This made it possible to move the manometers around the thermostat, simplifying inserting and reading of the manometers by the manipulator. Moreover the location in the room is subject to less restrictions ...

Methods and Materials Pressures are recorded from the internal anal sphincter by a double balloon device tied around a hollow steel cylinder forming two separate compartments (Fig. 1). With both balloons deflated, this device is gently inserted into the anus. The internal balloon is inflated with 10 ml. air through a three-way stopcock and kept inflated by closing the stopcock. The recording de...

BACKGROUND Inappropriately cuffed tracheal tubes can lead to inadequate ventilation or silent aspiration, or to serious tracheal damage. Cuff pressures are of particular importance during aeromedical transport as they increase due to decreased atmospheric pressure at flight level. We hypothesised, that cuff pressures are frequently too high in emergency and critically ill patients but are depen...

Deep convection energizes the entire water column. Large-eddy simulation of the oceanic boundary layer system predicts turbulence in the well-mixed layer as well as turbulence-induced internal waves propagating into the underlying stratified water column of the freely convecting wintertime Labrador Sea. Of particular interest is the downward propagation of energy from the turbulent boundary lay...

Abstract: In recent years deadly earthquakes in seismic areas have caused special concerns regarding liquefaction phenomenon by researchers and specialists. Excess pore water pressure in loose sediments may cause phenomena such as boiling, shearing strength and dynamic stiffness reduction and lateral movements cause difficulties. Many remedial methods such as soil replacement with proper materi...

BACKGROUND Previous investigations reported that the cuff pressure (CP) can decrease secondary to the CP evaluation itself. However is not established in literature if this loss of CP is able to generate alterations on expired tidal volume (ETV). Therefore, the aim of this study was to evaluate the potential consequences of the endotracheal CP assessment maneuver on CP levels and ETV in the ear...

Pressure suppression systems in boiling water reactors a r e designed to condense a largearmunt of steam very rapidly by injecting it into a pool of water. It transpires that such condensing flows a r e unstable and can lead to large oscillatory pressures on the walls of the containment system. This paper presents a theoretical model whose purpose i s to attempt to understand why these flows ar...

In this paper, the MEMS type ionization gauge with no X-Ray limitations has been presented. Having the dimensions of 2.4 mm× 0.8mm × 1.4 mm, the designed gauge is 9000 times smaller than the conventional type and can operate in HV and UHV pressures up to 5×10-9 torr. Operating at the temperature of 750°C, the cathode of proposed gauge is implemented using nickel and works in a way in...