permeability ratio curve
41Mass wasting — at Palo Duro Canyon, West Texas (2002) …
42Radon — This article is about the chemical element. For other uses, see Radon (disambiguation). astatine ← radon → francium Xe ↑ Rn ↓ Uuo …
43Economic growth — GDP real growth rates, 1990–1998 and 1990–2006, in selected countries …
44Technical diving — Technical diver during a decompression stop. Technical diving (sometimes referred to as Tec diving) is a form of scuba diving that exceeds the scope of recreational diving (although the vast majority of technical divers dive for recreation and… …
45Deep diving — The meaning of the term deep diving is a form of technical diving.[1] It is defined by the level of the diver s diver training, diving equipment, breathing gas, and surface support: in recreational diving, PADI define anything from 18 metres / 60 …
46Diving chamber — The decompression chamber at the Neutral Buoyancy Lab A diving chamber has two main functions: as a simpler form of submersible vessel to take divers underwater and to provide a temporary base and retrieval system in the depths; as a land or ship …
47Vegetation and slope stability — are interrelated by the ability of the plant life growing on slopes to both promote and hinder the stability of the slope. The relationship is a complex combination of the type of soil, the rainfall regime, the plant species present, the slope… …
48Nitrox — Typical Nitrox cylinder marking Nitrox refers to any gas mixture composed (excluding trace gases) of nitrogen and oxygen; this includes normal air which is approximately 78% nitrogen, 21% oxygen, and 1% other gases, primarily argon.[1][2] …
