Frequency dependent phase and amplitude distortion may theoretically be minimized using correction formulae derived from a model which assumes that water-filled catheter-manometer systems are analogous to an oscillating mass attached to a spring and damping pot. This study defines the practical limits of this correction technique using harmonic analysis of simultaneously recorded water-filled a...

Vacuum technology is one of the established advanced technologies, of present age, in the field of research and industry. Having numerous applications, in the areas of human activities, one is concerned with a relatively large vacuum chamber where pressure distribution is, usually, not uniform during dynamic gas flow. To minimize the pressure non-uniformities in such chambers, baffles are gener...

This paper was discussed the hardware components of a remotely controlled water channel management system for laboratory education utilizing internet things(IoT) and supervisory control data acquisition systems (SCADAs). The consists various sensors devices included air pressure sensor (mpx5010dp), sensor, ultrasonic distance (JSNSR04T) solenoid valve plastic. (mpx5010dp) used to detect level i...

Oceanic conditions play an important role in determining the effects of climate change and these effects can be monitored through the changes in the physical properties of sea water. In fact, Oceanographers use various probes for measuring the properties within the water column. CTDs (Conductivity, Temperature and Depth) provide profiles of physical and chemical parameters of the water column. ...

OBJECTIVE We have planned to evaluate the laryngeal mask cuff pressures (LMcp) inflated by anesthesia workers of several seniority, without using manometer. METHODS 180 patients scheduled to have short duration surgery with laryngeal mask were included in the study. Five anesthesia specialists (Group S), 10 residents (Group R) and 6 technicians (Group T) inflated the LMc; thereafter LMcp were...

It is often noted that the rise of C.S.F. pressure in response to compression of the jugular veins is variable and unpredictable. While doing routine lumbar punctures it was noticed that the amount of pressure rise seemed to depend on the side on which the patient was lying, and this report describes a study made to extend this observation. The subjects were I2 ward patients in whom there was n...

Dimethyl amino ethyl azide (DMAZ) is a good replacement for hydrazine group in space programs. This chemical was purified from water (1) + DMAZ (2) mixture in sub-atmospheric distillation column due to thermal sensitivity of DMAZ. For designing of the column, it is necessary to have vapor-liquid equilibrium data. In this article, T-x,y and y-x diagrams were obtain...

OBJECTIVE To test the agreement between two handcrafted devices and a cuff-specific manometer. METHODS The agreement between two handcrafted devices adapted to measure tracheal tube cuff pressure and a cuff-specific manometer was tested on 79 subjects. The cuff pressure was measured with a commercial manometer and with two handcrafted devices (HD) assembled with aneroid sphygmomanometers (HD1...

The existence of a large communication between the atria allows detailed study of sounds and pressures in the four heart chambers and the pulmonary arteries. Only the aorta is inaccessible to the cardiac catheter. In uncomplicated atrial septal defect, moreover, pressures within the heart chambers are almost normal. There are no important pressure gradients across the valves. It seems likely, t...