The wind speed gauge in a tunnel plays an important role the airflow simulation process so that it is similar to actual conditions as desired. Wind measurement mostly use manometer with special fluid (red fluid) and resulting data form of analog data. red unavailable Indonesia its price quite expensive becomes challenge for tunnels still manometer. Therefore, necessary make new instrument measu...

It has been shown in scattered reports (1, 2, 3, 4) from this laboratory that sudden changes of intrathoracic and abdominal pressure such as occur in coughing and straining produce simultaneous changes in the arterial pressure and in cerebrospinal pressure. It was argued that whereas these pressure changes may strain the arteries of the arms, legs and skin, the more vital arteries of the thorac...

The purpose of this study was to determine the effect of using a pressure manometer on the delivery of target airway pressures during manual hyperinflation by student physiotherapists in the laboratory and clinical environments. Manual hyperinflations were delivered under control and feedback conditions where the feedback condition involved manual hyperinflation with a pressure manometer. Compa...

With sterile precautions and after infiltration with local anaesthetic, a special type of needle was introduced into the lateral aspect of the knee near the upper border of the patella. This needle (S.W.G. 18, Down Bros., with a short bevel and perforations made in the sides 0 5 cm. from the point to prevent blockage) had a tap and a side-arm. A manometer filled with normal saline was attached ...

That flying involves at least a theoretical hazard to individuals with closed pneumothorax has long been known. Many observers have made references to the simple application of Boyle’s law, concerning the reciprocal relationship of volume and pressure of gases. In 1942 Lovelace and Hinshaw2 reported a roentgenographic demonstration of the effect of altitude on a series of patients, utilizing a ...

THE method about to be described secures a correct record of any part of the intracardiac pressure curve, for it meets the theoret-Fig. 1.-Scheme illustrating the arrangement of the apparatus. The meaning of the abbreviations is given in the text. ieal requirements of a perfect method, in that it employs an incom-pressible fluid and at the same time practically does away with the inertia error....

BACKGROUND Adequate ventilation is the key to successful neonatal resuscitation. Positive pressure ventilation (PPV) is initiated with manual ventilation devices via face masks. These devices may be used with a manometer to measure airway pressures delivered. The expiratory tidal volume measured at the mask (V(TE(mask))) is a good estimate of the tidal volume delivered during simulated neonatal...

Hir • Much is known of the cardiovas responses of normal man to le; but the available data on blood been obtained during relatively s Until recently, there has not b< factory method for continuously ing changes in thoracic aortic bloi man for significant periods of ti during, and after the changing caused by exercise: Thus, the actual alterations in aortic blood flow at the onset of exercise an...