Stratos Boats. It can also happen when saturation divers breathing hydreliox switch to a heliox mixture. There is another effect which can manifest as a result of the disparity in solubility between inert breathing gas diluents, which occurs in isobaric gas switches near the decompression ceiling between a low solubility gas (typically helium, and a higher solubility gas, typically nitrogen) An inner ear decompression model by Doolette and Mitchell suggests that a transient increase in gas tension after a switch from helium to nitrogen in breathing gas may result from the difference in gas transfer between compartments. If the transport of nitrogen 	Isobaric counterdiffusion
9452385	into the vascular compartment by perfusion exceeds removal of helium by perfusion, while transfer of helium into the vascular compartment by diffusion from the perilymph and endolymph exceeds the counterdiffusion of nitrogen, this may result in a temporary increase in total gas tension, as the input of nitrogen exceeds the removal of helium, which can result in bubble formation and growth. This model suggests that diffusion of gases from the middle ear across the round window is negligible. The model is not necessarily applicable to all tissue types. ICD prevention. Lambertsen made suggestions to help avoid ICD while diving. If 	Isobaric counterdiffusion
9452386	the diver is surrounded by or saturated with nitrogen, they should not breathe helium rich gases. Lambertson also proposed that gas switches that involve going from helium rich mixtures to nitrogen rich mixtures would be acceptable, but changes from nitrogen to helium should include recompression. However Doolette and Mitchell's more recent study of Inner Ear Decompression Sickness (IEDCS) now shows that the inner ear may not be well-modelled by common (e.g. Bühlmann) algorithms. Doolette and Mitchell propose that a switch from a helium-rich mix to a nitrogen-rich mix, as is common in technical diving when switching 	Isobaric counterdiffusion
9452387	from trimix to nitrox on ascent, may cause a transient supersaturation of inert gas within the inner ear and result in IEDCS. A similar hypothesis to explain the incidence of IEDCS when switching from trimix to nitrox was proposed by Steve Burton, who considered the effect of the much greater solubility of nitrogen than helium in producing transient increases in total inert gas pressure, which could lead to DCS under isobaric conditions. Recompression with oxygen is effective for relief of symptoms resulting from ICD. However, Burton's model for IEDCS does not agree with Doolette and Mitchell's model of 	Isobaric counterdiffusion
9452388	the inner ear. Doolette and Mitchell model the inner ear using solubility coefficients close to that of water. They suggest that breathing-gas switches from helium-rich to nitrogen-rich mixtures should be carefully scheduled either deep (with due consideration to nitrogen narcosis) or shallow to avoid the period of maximum supersaturation resulting from the decompression. Switches should also be made during breathing of the largest inspired oxygen partial pressure that can be safely tolerated with due consideration to oxygen toxicity. A similar hypothesis to explain the incidence of IEDCS when switching from trimix to nitrox was proposed by Steve 	Isobaric counterdiffusion
9452389	Burton, who considered the effect of the much greater solubility of nitrogen than helium in producing transient increases in total inert gas pressure, which could lead to DCS under isobaric conditions. Burton argues that effect of switching to Nitrox from Trimix with a large increase of nitrogen fraction at constant pressure has the effect of increasing the overall gas loading within particularly the faster tissues, since the loss of helium is more than compensated by the increase in nitrogen. This could cause immediate bubble formation and growth in the fast tissues. A simple rule for avoidance of ICD when gas 	Isobaric counterdiffusion
9452390	switching at a decompression ceiling is suggested: This rule has been found to successfully avoid ICD on hundreds of deep trimix dives. A decompression planning software tool called Ultimate Planner attempts to predict ICD through modeling the inner ear as either aqueous (Mitchell and Doolette's approach) or lipid tissue (Burton's approach). Isobaric counterdiffusion In physiology, isobaric counterdiffusion (ICD) is the diffusion of different gases into and out of tissues while under a constant ambient pressure, after a change of gas composition, and the physiological effects of this phenomenon. The term inert gas counterdiffusion is sometimes used as a 	Isobaric counterdiffusion
9452391	Stratos Boats Stratos Boats Stratos Boats, Inc. is a manufacturer of fishing boats and is located in Flippin, Arkansas. Formerly owned by Platinum Equity, which also owned Triton and Ranger Boats as Fishing Holdings LLS, Stratos was acquired by Bass Pro Group in December 2014. They produce a line of fiberglass boats, primarily for the U.S. bass and panfishing markets. Most of their boats are 16 ft. to 21 ft. in length. Stratos began building boats in 1984, and sells throughout a network of dealers throughout the United States, Australia, France, Japan, Mexico, Portugal, Romania, Russia, South Africa, Spain, Italy and Venezuela	Stratos Boats
9452392	. Stratos is partnered with high-profile professional anglers such as Skeet Reese, Larry Nixon, Shawn Battersby and Mike McClelland to help promote enthusiasm, excitement and overall benefits of time spent on the water. From the Stratos web site: After more than 30 years in the market and several changes in ownership, production of new Stratos boats has been halted as White River Marine Group focuses its resources on a consolidated group of high-demand performance fishing boat brands. White River Marine Group stands behind Stratos boats in operation with warranty, parts and service support." Stratos Boats Stratos Boats, Inc. is