combustion instability
41Ethylene oxide — Oxirane redirects here. For oxiranes as a class of molecules, see epoxide. Ethylene oxide …
42Depleted uranium — The DU penetrator of a 30 mm round[1] Depleted uranium (DU; also referred to in the past as Q metal, depletalloy, or D 38) is uranium with a lower content of the fissile isotope U 235 than natural uranium (natural uranium is about 99.27% uranium… …
43Fusion power — The Sun is a natural fusion reactor. Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power). In doing so they release a …
44Syria — This article is about the modern state of Syria. For other uses, see Syria (disambiguation). Syrian Arab Republic الجمهورية العربية السورية Al Jumhūriyyah al ʿArabiyyah as Sūriyyah …
45Générateur MHD — Un générateur MHD (magnétohydrodynamique) est un convertisseur MHD qui transforme l énergie cinétique d un fluide conducteur directement en électricité. Le principe de base est fondamentalement le même que pour n importe quel générateur… …
46global warming — an increase in the earth s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. [1975 80] * * * Potential increase in global average surface temperatures resulting from… …
47Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
48nitrogen group element — ▪ chemical elements Introduction any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… …
49Space tether — Artist s conception of satellite with a tether Space tethers are cables, usually long and very strong, which can be used for propulsion, stabilization, or maintaining the formation of space systems by determining the trajectory of spacecraft and… …
50Markstein number — The Markstein number is a term used in combustion engineering and explosion studies. It characterizes the effect of local heat release of a propagating flame on variations in the surface area along the flame front and the associated local flame… …
