OBJECTIVE Ozone (O3) has been suggested as an anti-microbial treatment in dentistry, with an ozone gas delivery system introduced for the treatment of fissure and root caries. The aim of this study was to investigate the sealing capacity of the novel delivery system and its re-suction capacity during accidental displacement of the cup at different stages of ozone delivery. MATERIAL AND METHOD...

Small airway disease in infants is characterised by abnormal lung volume and uneven ventilation distribution. An inert tracer gas washin/washout technique using a pulsed ultrasonic flow meter is presented to measure functional residual capacity (FRC) and ventilation distribution in spontaneously breathing and unsedated infants. With a pulsed ultrasound sent through the main stream of the flow m...

It has recently been shown (O. F. Pedersen T. R. Rasmussen, O. Omland, T. Sigsgaard, P. H. Quanjer. and M. R. Miller. Eur. Respir. J. 9: 828-833, 1996) that the added resistance of a mini-Wright peak flowmeter decreases peak expiratory flow (PEF) by approximately 8% compared with PEF measured by a pneumotachograph. To explore the reason for this, 10 healthy men (mean age 43 yr, range 33-58 yr) ...

Due to increasing economic pressures in natural gas production, there is a recognized demand for flow meters that are able to measure when a significant quantity of liquid is present in gas flows. The key issues are that the liquid quantity is often unknown and its presence can affect the operation of traditional dry gas meters making the gas flow readings inaccurate. A number of techniques are...

BACKGROUND The aim of this study was to evaluate the use of a glucose meter with surgical patients under general anesthesia in the operating room. METHODS Glucose measurements were performed intraoperatively on 368 paired capillary and arterial whole blood samples using a Nova StatStrip (Nova Biomedical, USA) glucose meter and compared with 368 reference arterial whole blood glucose measureme...

The performance of an incinerator is affected markedly by the moisture content of the refuse. To maintain a satisfactory £ire and a high rate of operation under con� ditions of varying refuse moisture is difficult at best: As the flue gas reflects the refuse analysis, a meter is proposed that would report the ratio of CO, and H,O vapor in the furnace exit gas. The CO2/H20 ratio varies from 2.0 ...