And they have conducted experiments with an airplane in flight to measure the amount of time that the air space above the fuel in a tank has air and fuel vapors in a proportion that will allow combustion.
Due to the low equilibrium pressure of phenol in the crystallizer operated at low temperatures (e.g., −9 °C) and excellent membrane permselectivity for phenol, a large proportion of phenol vapor leaving from membrane surface was condensed as high purity phenol crystals in the first condenser (crystallizer).
Maciej Goniewicz, a toxicologist at the Roswell Park Cancer Institute in Buffalo, New York, says, "This is vapor, but only a small proportion of it is water".
It measures the proportion of alcohol vapors in exhaled air, a proportion that reflects the content of alcohol in the blood.
When mixed with the proper proportion of air, the vapor from just one cup of gasoline has the explosive force of roughly five sticks of dynamite.
During each thermal cycle, the cylinder contains, in general, air, fuel vapor, and combustion products with different proportions depending on the engine conditions under consideration.
The vapor was composed of 5 20 vol.% methane proportion in hydrogen.
In the early stages of the reaction, the vapor is rich in Pb and has a ZnO lesser proportion.
These studies show that ethanol caused a decrease in the relative proportion of fine particles due to the decrease in vapor pressure of the solution as we add ethanol.
High influenza virus activity coincided with high levels of temperature, relative humidity or vapor pressure, with the only exception of Guangzhou which had higher mean proportions when temperature is within the middle range.
