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2,4-Dichlorophenoxyacetic acid is an organic compound with the chemical formula Cl 2 C 6 H 3 OCH 2 CO 2 H.It is usually referred to by its ISO common name 2,4-D. [4] It is a systemic herbicide that kills most broadleaf weeds by causing uncontrolled growth, but most grasses such as cereals, lawn turf, and grassland are relatively unaffected.
The Durham boat was a large wooden, flat-bottomed, double-ended freight boat used on interior waterways in North America beginning in the middle of the 18th century. They were replaced by larger, more efficient canal boats during the canal era beginning with the opening of the Erie Canal in 1825.
Portland ' s wooden hull was built by the New England Company in Bath, Maine.The 1200-horsepower vertical-beam steam engine was constructed by the Portland Company, with a bore, or cylinder diameter, measuring 5 ft 2 in (1.57 m) across, together with a 12 ft (3.7 m) stroke. [1]
A pump-jet, hydrojet, water jet, or jet drive uses a ducted propeller (axial-flow pump), centrifugal pump, or mixed flow pump to create a jet of water for propulsion. These incorporate an intake for source water and a nozzle to direct its flow out, generating momentum, and in most cases, employing thrust vectoring to steer the craft.
The ctinidia lie mainly within the branchial siphon, through which the animal pumps the water that passes over the gills. The two siphons are very long and protrude from the posterior end of the animal. Where they leave the end of the main part of the body, the siphons pass between a pair of calcareous plates called pallets.
Torpedo Boat (12) Class Picture Type Boats Displacement Note Chidori-class: Torpedo boat: Chidori | Manazuru | Tomozuru | Hatsukari: 600 tonnes 20 vessel planned however only 4 completed. 16 replaced by Ōtori-class. Ōtori-class: Torpedo boat: Ōtori | Hiyodori | Hayabusa | Kasasagi | Kiji | Kari | Sagi | Hato | 960 tonnes 16 vessel planned ...
RMS Carpathia was a Cunard Line transatlantic passenger steamship built by Swan Hunter & Wigham Richardson in their shipyard in Wallsend, England.. The Carpathia made her maiden voyage in 1903 from Liverpool to Boston, and continued on this route before being transferred to Mediterranean service in 1904.
A month previously, procurement for boat 4 (Audacious) had been agreed. [9] Boats 5 and 6 (Anson and Agamemnon) were approved in March 2010. [9] In June 2012 the order was placed for the manufacture of the nuclear reactor for boat 7 (Achilles), as well as production of the first nuclear reactor for the Dreadnought-class submarine. [17]