BACKGROUND Fibre reinforced composites (FRC) can be used to join teeth as a rigid unit for anchorage purposes and/or for tooth movement. The utility of FRCs for these applications depends on the fracture characteristics and durability of the material under masticatory loads. AIMS To evaluate the effect of simulated masticatory loads on the fracture characteristics of FRC bars joining two bicu...

Functional residual capacity (FRC) and breath-by-breath compliance of the ventilatory system (Crs) were measured in 10 mechanically ventilated patients during anaesthesia for lung surgery (pneumonectomy, lobectomy, lung or pleural resections or exploratory thoracotomy). In eight patients not requiring pneumonectomy, FRC of the lower lung decreased by 8 +/- 9% (mean +/- 1 SD) (P less than 0.05) ...

In this work, the temporal variations in ionospheric F region current (FRC) during 2022 volcanic eruption Tonga are reported for first time. The FRC increased and underwent several polarity reversals following eruption, as observed by dual Swarm satellites. By combining neutral wind observations derived from Ionospheric Connection Explorer (ICON) satellite, we attempt to reveal potential physic...

1. The pattern of breathing in 12 patients with severe irreversible airflow obstruction has been studied during ventilatory stimulation by rebreathing CO2. Mean maximum tidal volume response was only 1.23 +/- 0.30 litres (mean +/- SD); this represented 65% of mean measured vital capacity and 82% of mean measured inspiratory capacity. During the course of rebreathing mean total breath duration w...

Disinfected water at the water treatment plant may be polluted again when the water is being transported. Hence, the water should be protected against the possible pollutions by keeping the disinfectant residues in the transportation line. If chlorine is selected as the disinfectant, it will be added to the water in a way that its residue remains in the line so as to prevent any unpredicted pol...

Missing a canine is of serious concern in social life of a patient in most of societies. While conventional fixed partial dentures and implant-supported restorations may often be the treatment of choice, fiber-reinforced composite (FRC) resins offer a conservative, fast and cost-effective alternative for single and multiple teeth replacement. This clinical report presents two cases where FRC te...

The maximum static inspiratory and expiratory pressures (MIP and MEP, respectively) were measured in 15 normal male subjects (average age, 27.14 years) in standing and sitting position. The MIP was determined at RV and FRC and MEP was determined at TLC and FRC. No significant differences were found for these parameters between the two postures. Our study proves that the posture adopted by the s...

An economic magnetic fusion reactor favours a high ratio of plasma kinetic pressure to magnetic pressure in a well-confined, hot plasma with low thermal losses across the confining magnetic field. Field-reversed configuration (FRC) plasmas are potentially attractive as a reactor concept, achieving high plasma pressure in a simple axisymmetric geometry. Here, we show that FRC plasmas have unique...