نتایج جستجو برای: planar membrane humidifier
تعداد نتایج: 452249 فیلتر نتایج به سال:
BACKGROUND During mechanical ventilation effective conditioning of inspired air is important. In this respect, conventional humidifiers do not perform optimally. By design, a counter-flow-type humidifier should improve humidification and heating, but may increase resistance. METHODS We investigated mechanical impedance and work of breathing (using pressure-flow characteristics and additional ...
OBJECTIVE The procedure for weaning from mechanical ventilation in many patients is a difficult and long process and increases the time of mechanical ventilation. There are numerous ways to achieve weaning. One common method is the use of CPAP. Considering the lower price of a humidifier, blender, and T-piece compared with CPAP and in light of the limited number of studies in this field, the cu...
Phase angle shift between the current and voltage with frequency has been reported for a single phosphoric acid fuel cell in the cell temperature from 100 °C to 160 °C and the humidifier temperature from 40 °C to 90 °C. An electrochemical workbench is employed to find the shift. The figure of phase angle shift shows a peak in high humidifier temperatures. The peak in phase angle shift directs t...
A key parameter that determines the efficiency of proton exchange membrane fuel cells is their operating conditions. Optimization various components in these pivotal improving cell performance, as performance directly related to operational conditions are subjected to. This investigation examined viability an air breathing ambient Riyadh Saudi Arabia. validated three-dimensional 5-cell stack, m...
BACKGROUND In South Korea, a cluster of acute lung disease patients included lung injury disease suspected of being caused by the use of humidifier disinfectants. We examined the relationship between humidifier disinfectant exposure and clinically diagnosed humidifier disinfectant-associated lung injury (HDLI) in a family-based study. METHODS This case-control study included 169 clinically co...
It is now more than 60 years since the polio epidemic in Denmark in 1952 that led, at least partly, to the development of artificial ventilation.1 In the report of that epidemic, Lassen stated that “A good humidifier is essential: otherwise incrustation of secretions may occur.” Subsequent to the polio epidemic, a heated humidifier was described by Marshall and Spalding in 1953,2 and Drägerwerk...
introduction: recent studies have shown the presence of cl- channels in heart and liver mitochondrial membranes. in this work, we have characterized the functional profile of a cl- channel from rat brain mitochondria. methods: after removing and homogenizing the rat brain, the supernatant was separately centrifuged in msedigitonin, h2o and na2co3 and mitochondrial inner membrane vesicles were o...
The pressures and resistances of a bubble humidifier (Bennett Cascade) and a blow-by humidifier (Fisher and Paykel) were measured and computed at gas flow rates from 4.5 to 100 litre min-1. Pressures increased with flows, with the Bennett pressures being greater at all flows. The resistance of the Fisher-Paykel increased with flows, but remained less than that of the Bennett. An inverse resista...
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