ingress of oil
51Hyaluronan — Identifiers CAS number 9004 61 9  …
52Cathedral of the Good Shepherd — The Cathedral of the Good Shepherd (Chinese: 善牧主教座堂) is the oldest Roman Catholic church in Singapore. It is located in the Museum Planning Area within the Civic District and affords a welcome respite from the city.Bounded by the parallel Queen… …
53Shaft-driven bicycle — A shaft driven bicycle is a chainless bicycle that uses a driveshaft instead of a chain to transmit power from the pedals to the wheel. Shaft drives were introduced over a century ago, but were mostly supplanted by chain driven bicycles due to… …
54Presidential Unit Citation (United States) — Presidential Unit Citation Army and Air Force P.U.C …
55African nationalism — is the nationalist political movement for one unified Africa, or the less significant objective of the acknowledgment of African tribes by instituting their own states, as well as the safeguarding of their indigenous customs. Establishments which …
56Rainbow — For other uses, see Rainbow (disambiguation). Double rainbow and supernumerary rainbows on the inside of the primary arc. The shadow of the photographer s head on the bottom marks the centre of the rainbow circle (antisolar point). A rainbow is… …
57LO-NOx burner — A LO NOx burner is a type of burner that is typically used in utility boilers to produce steam and electricity.Background [ thumb|right|John Joyce the inventor of the LO NOx burner at Australian Gas Association Conference in the early 1990 s] The …
58Cefn Mably — today makes up part of St Mellons, a small suburb on the east side of the capital city of Wales,Cardiff.History of Cefn Mably s Lords of the manor house David, the third son of a John Kemeys, married Cecil, daughter and heir of Llewelyn Evan of… …
59Rotary kiln — A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. Materials produced using rotary kilns include:* Cement * Lime * Refractories * Metakaolin * Titanium dioxide * Alumina * …
60Great fire of Newcastle and Gateshead — [ Handcoloured woodblock engraving from the Illustrated London News, 14th October 1854] The Great fire of Newcastle and Gateshead was a tragic and spectacular series of events starting on Friday 6 October 1854, in which a substantial amount of… …
