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Heat-expanded lightweight pebbles. Lightweight expanded clay aggregate (LECA) or expanded clay (exclay) is a lightweight aggregate made by heating clay to around 1,200 °C (2,190 °F) in a rotary kiln.
Clay is a type of fine-grained natural soil material containing clay minerals [1] (hydrous aluminium phyllosilicates, e.g. kaolinite, Al 2 Si 2 O 5 4). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impurities, such as a reddish or brownish colour from small amounts of iron oxide .
Direct air capture (DAC) is the use of chemical or physical processes to extract carbon dioxide (CO 2) directly from the ambient air. [1] If the extracted CO 2 is then sequestered in safe long-term storage, the overall process is called direct air carbon capture and sequestration ( DACCS ), achieving carbon dioxide removal and be a "negative ...
"Cob stitch" repair on old traditional cob cottage in Devon, England Maison de Jeanne, Sévérac-le-Château.Timber and cob construction. Cob is an English term attested to around the year 1600 [3] for an ancient building material that has been used for building since prehistoric times.
Monazite contains 2.5% thorium, allanite has 0.1 to 2% thorium and zircon can have up to 0.4% thorium. [2] Thorium-containing minerals occur on all continents. [ 3 ] [ 4 ] [ 5 ] Thorium is several times more abundant in Earth's crust than all isotopes of uranium combined and thorium-232 is several hundred times more abundant than uranium-235.
LIAT (1974) Ltd, also known as Leeward Islands Air Transport Services and operating as LIAT, was a regional airline headquartered in Antigua and Barbuda that operated high-frequency inter-island scheduled services to 15 [3] destinations in the Caribbean.
Lithium acetate is used in the laboratory as buffer for gel electrophoresis of DNA and RNA.It has a lower electrical conductivity and can be run at higher speeds than can gels made from TAE buffer (5-30V/cm as compared to 5-10V/cm).
Tanah Lot is one of the seven main sea temples, [8] located along the south-western coast Pura Batu Bolong, some 300 m north of Pura Tanah Lot. The Tanah Lot temple is close to the Balinese mythology. At the base of the rocky island, venomous sea snakes are believed to guard the temple from evil spirits and intruders.