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Shaft sinking. A plan-view schematic of a mine shaft showing cage and skip compartments. Services may be housed in either of the four open compartments. Shaft mining or shaft sinking is the action of excavating a mine shaft from the top down, where there is initially no access to the bottom. [1] Shallow shafts, typically sunk for civil ...
A Stirling engine is a heat engine operating by cyclic compression and expansion of air or other gas, the "working fluid", at different temperature levels such that there is a net conversion of heat to mechanical work. [1][2] The Stirling cycle heat engine can also be driven in reverse, using a mechanical energy input to drive heat transfer in ...
A drain-waste-vent system (or DWV) is the combination of pipes and plumbing fittings that captures sewage and greywater within a structure and routes it toward a water treatment system. It includes venting to the exterior environment to prevent a vacuum from forming and impeding fixtures such as sinks, showers, and toilets from draining freely ...
Each compartment was separated from its neighbour by a bulkhead running the width of the ship; there were fifteen bulkheads in all. Each bulkhead extended at least to the underside of E Deck, nominally one deck, or about 11 feet (3.4 m), above the waterline. The two nearest the bow and the six nearest the stern went one deck further up. [62]
A chest tube (also chest drain, thoracic catheter, tube thoracostomy or intercostal drain) is a surgical drain that is inserted through the chest wall and into the pleural space or the mediastinum. The insertion of the tube is sometimes a lifesaving procedure. The tube can be used to remove clinically undesired substances such as air ...
Compartment (ship) A compartment is a portion of the space within a ship defined vertically between decks and horizontally between bulkheads. It is analogous to a room within a building, and may provide watertight subdivision of the ship's hull important in retaining buoyancy if the hull is damaged. Subdivision of a ship's hull into watertight ...
In electromagnetism, current sources and sinks are analysis formalisms which distinguish points, areas, or volumes through which electric current enters or exits a system. . While current sources or sinks are abstract elements used for analysis, generally they have physical counterparts in real-world applications; e.g. the anode or cathode in a batte
Taiwan showed off its missile firepower on Tuesday, launching a battery of surface-to-air missiles in front of reporters during a visit to a sensitive test site on a remote part of the island's ...