OBJECTIVE To compare the efficacy of low-flow oxygen, low-flow air and sham treatment given via nasal cannulae in preventing desaturation (falls in oxygen saturation (SpO2)) in preterm infants. STUDY DESIGN Infants born at <33 weeks gestation receiving gas at flow rates <1 l/min via nasal cannulae were eligible for inclusion. Enrolled infants received three treatments-0.1 l/min 100% oxygen, 0...

a canola seed pneumatic conveyor was designed and constructed to convey canola seed at a 90 g/hr mass flow rate through a 58 mm diameter pipe. physical and aerodynamic properties of the canola seed that are critical to the design process were measured. system pressure drop, comprising air pressure drop and solid pressure drop and which is the most important aspect of pneumatic conveyor design, ...

In this paper, we develop an analytical approach to planning air traffic flow management (TFM) strategies under uncertain weather. To do that, we model the dynamics of an air traffic flow under uncertain weather as a discrete jump-linear system, which enacts the tracking of transient traffic congestion statistics. We then conduct a sensitivity analysis of traffic congestion to disturbances intr...

Treatment of Methyl Tert-Butyl Ether (MTBE) from contaminated surface and groundwater supplies presents specific challenges due to the physicochemical properties of MTBE which depend strongly on its hydrophilic nature, and translate into a high solubility in water, very low HenryÕs constant and very low affinity for common adsorbents. In this study we evaluate two common treatment technologies,...

background: the aim of this study was to prevent of increasing end tidal co2(et co 2) with changing of vital capacity and respiratory rate, when using of birthing filter in infants. materials and method: in a randomized clinical trial study, ninety four infant' patients were studied in three groups . basic values, such as: peak inspiratory pressure, tidal volume, minute ventilation, respiratory...