منابع مشابه
Breathing expired gases from bedding .
lation cannot arise. We welcome the authors' recommendation that growth problems be identified at an early age in a community height screening programme. Once screening has been carried out on initial height however, there is little to be gained from waiting a year and screening on velocity using the 25th centile as a cut off, as in the Oxford study. First, the normal short child, on the third ...
متن کاملRebreathing expired gases from bedding: a cause of cot death?
The reported association of cot death and sleeping prone could be due to rebreathing of expired gases. A mechanical model simulating the respiratory system of an infant, exhaling warm humidified air with an end tidal carbon dioxide of 5%, has been used to investigate this. Some commonly used bedding materials caused an accumulation of carbon dioxide of 7% to over 10% with the model lying face d...
متن کاملPanel Discussion: Filtration of breathing gases during mechanical ventilation
Filtration of contaminated breathing gases is a necessary measure in mechanical ventilation. There are two types of filters available for filtration of breathing gases: mechanical filters and electrostatic filters. Filter efficiency can be established through a number of means, the most stringent being the High Efficiency Particulate Air (HEPA) test. While a variety of HEPA-grade filters are av...
متن کاملQuench-induced breathing mode of one-dimensional Bose gases.
We measure the position- and momentum-space breathing dynamics of trapped one-dimensional Bose gases at finite temperature. The profile in real space reveals sinusoidal width oscillations whose frequency varies continuously through the quasicondensate to ideal Bose gas crossover. A comparison with theoretical models taking temperature into account is provided. In momentum space, we report the f...
متن کاملSeparation of Dissolved Gases from Water for a Portable Underwater Breathing
Water contains oxygen which may make a human breathe under water like a fish. Centrifugal separator can separate dissolved gases from water. Carrier solution can increase the separation of dissolved oxygen from water. But, to develop an breathing device for a human under water, the enhancement of separation of dissolved gases including oxygen and portable devices which have dc battery based dev...
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ژورنال
عنوان ژورنال: Archives of Disease in Childhood
سال: 1994
ISSN: 0003-9888,1468-2044
DOI: 10.1136/adc.70.4.354-c