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--Boundary_(ID_aAfdWIvrD0xeSnqZUje4Vw) Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit On a final note on the 80/20 deco saga, given that the WKPP spends a third of the time on back gas, and two-thirds on pure O2, let's work out the weighted O2 concentration, over time: Let's assume that back gas is 14% O2. ..66 x 1.0 + .33 x .14 = 0.7062 So, on a time average, the WKPP executes their deco as if they were breathing EAN 50 and EAN 70, but they only spend as much time at their shallow stops as if they were on O2. Isn't it ironic that this entire time, WKPP really is decompressing using a 50/70 combination instead of 36/80, what a difference! It must be the mythical "oxygen window" that affords them the margin they need to make up the difference, or maybe they just like Russian roulette. DCS is, after all, just a game of statistics, right? What stats do you want to live with? The WKPP advocates seems to have quite a stomach. Should we contact Bill Gates to find out when the oxygen window is coming out? Maybe it's just more marketing, another unicorn. Let's see here, years of clinical research, and volumes have been published on the fact that pulmonary efficiency is negatively impacted by breathing pure oxygen, we even advocate taking breaks from breathing pure O2 to minimize lung tissue impact, and these folks pretend that gas exchange is miraculously improved as a result of pure O2 decompression? Again, give me a break. If that isn't yet another contradiction, what is? -- Guy --Boundary_(ID_aAfdWIvrD0xeSnqZUje4Vw) Content-type: text/html; charset=us-ascii Content-transfer-encoding: 7bit <!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> On a final note on the 80/20 deco saga, given that the WKPP <br>spends a third of the time on back gas, and two-thirds on pure <br>O2, let's work out the weighted O2 concentration, over time: <p>Let's assume that back gas is 14% O2. <p>.66 x 1.0 + .33 x .14 = 0.7062 <p>So, on a time average, the WKPP executes their deco as if they <br>were breathing EAN 50 and EAN 70, but they only spend as much <br>time at their shallow stops as if they were on O2. <p>Isn't it ironic that this entire time, WKPP really is decompressing <br>using a 50/70 combination instead of 36/80, what a difference! <p>It must be the mythical "oxygen window" that affords them the <br>margin they need to make up the difference, or maybe they just <br>like Russian roulette. DCS is, after all, just a game of statistics, <br>right? What stats do you want to live with? The WKPP advocates <br>seems to have quite a stomach. <p>Should we contact Bill Gates to find out when the oxygen window <br>is coming out? Maybe it's just more marketing, another unicorn. <p>Let's see here, years of clinical research, and volumes have been <br>published on the fact that pulmonary efficiency is negatively impacted <br>by breathing pure oxygen, we even advocate taking breaks from breathing <br>pure O2 to minimize lung tissue impact, and these folks pretend that <br>gas exchange is miraculously improved as a result of pure O2 decompression? <br>Again, give me a break. If that isn't yet another contradiction, what is? <pre>-- Guy</pre> <p> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> </html> --Boundary_(ID_aAfdWIvrD0xeSnqZUje4Vw)-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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