both-way signalling
31Lipid raft — organisation, region (1) is standard lipid bilayer, while region (2) is a lipid raft. The plasma membrane of cells is made of a combination of glycosphingolipids and protein receptors organized in glycolipoprotein microdomains termed lipid… …
32High-speed rail in Europe — High speed rail is emerging in Europe as an increasingly popular and efficient means of transportation. The first high speed rail lines in Europe, built in the 1980s and 1990s, improved travel times on intra national corridors. Since then,… …
33Mirror — looking glass redirects here. For other uses, see Looking Glass (disambiguation). This article is about wave reflectors (mainly, specular reflection of visible light). For other uses, see Mirror (disambiguation). A mirror, reflecting a vase A… …
34Mid-Norfolk Railway — Steam hauled train on Danemoor Bank, 2011 Locale England Terminus Dereham Connections Breckland Line: near Wymondham …
35Right- and left-hand traffic —   countries with right hand traffic …
36Rail transport in Victoria — Infobox rail railroad name = Railways of Victoria logo filename = logo size = system map caption = Victorian railway network, passenger lines in colour, freight only lines in grey marks = locale = Victoria, Australia start year = 1854 end year =… …
37North American railway signaling — For the actual physical signals, see North American railroad signals. Standards for North American railway signaling in the United States are issued by the Association of American Railroads (AAR), which is a trade association of the railroads of… …
38USB — This article is about the computer bus to connect peripherals. For other uses of USB, see USB (disambiguation). Universal Serial Bus Original logo Type Computer Hardware Bus …
39Crossrail — For other uses, see Crossrail (disambiguation). Crossrail Crossrail logo Overview Type Commuter rail, Suburban rail …
40List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
