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Stated below are the soluabilities of gas in water at 30 and 40 degrees
centigrade.

Temp		30  		40

H		0.0170		0.0164
He		0.084		0.0084
N		0.0133		0.0119

These are the volume of gas measured at 0'c and 101.325kN/m2 which will 
dissolve in a unit mass of water at the stated temperature with the gas at 
a pressure of 101.325 kN/m2.

As can be seen the H and He values stradle the N value. 
Did Bulmann take into account the solubality factor in his formula, ( I
Have got to by his book on this ), and if so is it enough to reference
these value to the respective nitrogen value and divide the Volume
ratio my the result.

If not , suggestions please!!

As you can see from the above the solubality of the gases increases
with temperature, hence if the temp of the skin is below that of the core
as it always should be, surely this increases the soluability at the 
extremities of the body. Hence which temp values do you take, that of 40'C
(the one nearest the body temp), or that of 20'C ( that nearest the skin
temp). Ones initial reaction would be to side with caution.

For bulman tissues codes means that the conversion factor would be
for helium would be 

	2.65/(0.0119/0.0084)= 1.8705

at 40'c at the surface.

and 	2.65/(0.0152/0.0086) = 1.499

Please don't flame me it these results are a load of ******'s
just inform me why please!

The gas solubality factors come from Kaye + Labey 15th edit


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