Search results

Thought many of you on SB would be interested in this recently published statistical validation paper for the LANL deep stop model (RGBM). We have been collecting data (ongoing effort) from our C&C dive operations for the past 5-8 yrs or so, and finally had some time to publish the data...

SB Folks, Expect many of you on Mike's Dr Deco Site interested, so am happy to post upcoming USN/UHMS/DAN/NAUI/PADI Wkshp on Lists. Here it is -- News Release and Schedule. News Release: Theoretical and practical solutions as to how to ascend or decompress after diving have been...

Just FYI. Just back from a USN ONR/NAVSEA/BUMED Review/Wkshp in Baltimore. NEDU will begin man trials on deep stops, and this is monumental for the USN. Pairwise correlation of air dives to 170 ft for 25 - 35 minutes will commence in January, with one dive classical (Haldane-like) and...

Listees, Have been asked to pass this onto SB -- great historical perspectives from the Father Of Modern Decompression Theory. Is part of article from SOURCES. BW Some Early Evidence for Models Dual-Phase By Brian A. Hills Editor’s note: Brian Hills was one of...

List, Just FYI and some are already familiar. Mark Ellyat (UK) continues in his quest for world record OC dives on trimix using modern deco strategies. These stratgeies include eliminating nitrox switches (keeping N2 levels low while minimizing isobaric N2...

List, Interesting discussions on related Threads, so maybe some will find this interesting too. Modern deco science and technology modeling, validation, and testing are very global in approach, not just a "plunk 'em and dunk'em" and pulse'em and record'em" process which...

Guys And Gals, Just a quicky here. If you have seen, please move past. Fumbling thru a couple of mailboxes, I got requests to spell out differences between RGBM and VPM (again). Here's a copy of that post on another site. Thanks for all that great RGBM feedback and discourse. :)...

All, ;) Got some emails about optimal switch strategies in modern deco frameworks, and impacts of isobaric countertransport. So for those who asked me, here's my read using dual phase dynamics (RGBM)), what tec sectors dive and report, some earlier experiments and observation...

Folks, Thought you might like some non-religious facts about DAN PDE, stats, and FAD incidence: This comes off the DAN CD "DCS Case Series". Plus return email from Dick Vann at my office (can FWD). Dick gave a talk at DEMA on same -- maybe some of you caught it...

All, Enjoyed stimulating exchanges (most) the past week or so. Thanks for your interest too, and all the personal emails. Heading out, and have been real busy since 9/11. Bruce Wienke Program Manager Computational Physics C & C Dive Team Ldr

Folks, The business of "P/1.6", "halving", and "gradient factor" rules for juxta-positioning deep stops (first and following afterward) are all ad hoc measures imposed on Haldane deco. Sometimes they work for very limited diving and ranges, but in general they are without...

Somebody out there asked about optimal gas switching strategies, but had some misconceptions about dissolved gas transfer. At any rate, the simple answer these days to the former is solid, tested, validated, recorded data, and backed up by real diving, in the real world. And phase models...

All, Just want to correct a few statements on some recent posts on reverse profiles: 1) the RP Wkshp was sponsored by the Smithsonian Institute, NOT DAN. 2) SI Wkshp ONLY suggested RPs were OK for recreational air diving with deltas less than 30 fsw...

Just back from DEMA with news from HydroSpace Engineering -- also check their Website. EXPLORER now uses FULL UP RGBM code for mixed gas, deco diving up. This is a complete model -- deep stops, adjustable user safety, mixed gases, constant ppO2 for breathers, etc. This is a first...

Just back from DEMA. Here are some RGBM related things: 1) -- EXPLORER now uses FULL UP RGBM code for mixed gas, deco diving up. This is a complete model -- deep stops, adjustable user safety, mixed gases, constant ppO2 for breathers, etc. This...

Guys and Gals, Having read thru and answered many of your questions on RGBM algorithmx, tables, meters, and software (see my 2 earlier posts on RGBM questions), you might be interested in the Deep Stops And Modern Deco Strategies Wkshp being held in Tampa on February...

Speaking of deep stops -- check out the article in Alert Diver about Haldane Deep Stops. It's patently FALSE-- Haldane couldn't put deep stops into a consistent dissolved gas only computational format, didn't introduce them ad hoc into his published RN schedules, didn't test deep enough...

All questions about oxygen dose can be answered directly by simple calculations and bookkeeping of hypothetical dose. It's pretty straightforward and tech divers have to do it all the time. 1) -- for CNS dose, divide all your actual exposure times at any given ppO2 by...

All, If your Webmeister will allow it, I can post a general info blurb on RGBM -- it's in PDF (ACROBAT) format. Maybe this answers some of your RGBM questions in general terms. I also have another technical blurb that might be of interest to others. Otherwise...

Someone asked about RGBM Tables, algorithms, etc. and why we use them over the old "stuff" (Haldane M-values etc.) It's simple -- DCS is caused by bubbles, not dissolved gas, and RGBM looks at bubbles (and also dissolved gas as it couples to bubble growth). Staging dynamics differ for...