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It is commonly thought to be named after the Nobel Laureate Eduard Buchner (without umlaut), but it is actually named after the industrial chemist Ernst Büchner. [2] A Büchner funnel fitted with Sintered Disc made of Boro 3.3 Glass. Diagram of filtration set-up using a Büchner flask
The Buchner ring expansion is a two-step organic C-C bond forming reaction used to access 7-membered rings. The first step involves formation of a carbene from ethyl diazoacetate , which cyclopropanates an aromatic ring.
Buchner funnels are made of porcelain and include a plate of sintered glass or perforated porcelain. These are used in filtration under low pressure with a Buchner flask. [2] Hot filtration funnel is a less commonly seen funnel where the funnel is jacketed, and surrounded by a heated fluid. [3]
Büchner flask A Büchner funnel is attached to the flask via a black elastomer adapter. The hose barb is connected via vacuum hose to a vacuum source such as an aspirator. ...
The replenishment oiler HMAS Sirius (right) providing fuel to the amphibious warfare ship USS Juneau while both are underway. A replenishment oiler or replenishment tanker is a naval auxiliary ship with fuel tanks and dry cargo holds which can supply both fuel and dry stores during underway replenishment (UNREP) at sea.
The technology of oil transportation has evolved alongside the oil industry. Although use of oil reaches to prehistory, the first modern commercial exploitation of oils distilled from material extracted from the ground dates back to James Young's manufacture of paraffin (kerosene) in 1850. [1]
Motorized Lambo, the sail has been removed. The pinisi rig comprises seven to eight sails on two masts, i.e., three foresails (in Konjo, the language of the Bontobahari shipwrights, cocoroq [22]) set over a long bowsprit (anjong), a main and main-topsail on the main mast (sombalaq bakka and tampaseqreq), mizzen and mizzen-topsail on the smaller mast aft (sombalaq ri boko and tampaseqreq ri ...
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