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A Buchan trap (alternative names: Bristol interceptor, [1] interceptor trap and disconnecting trap) is a device fitted in a domestic sewer pipe to prevent odours entering the pipe from the public sewer [2] and permeating the house, a common problem before individual plumbing fittings were separately trapped.
The factors influencing gully erosion were investigated in Zaria, Kaduna state, Nigeria, utilizing SRTM data, soil samples, rainfall data, and satellite imagery. The findings indicated that the factors that had the biggest effects on gully erosion were slope (56%) and rainfall (26%), land cover (12%), and soil (6%).
In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings while allowing waste materials to pass through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases and chemical fumes from escaping through drains.
A gully emptier (colloquially: "gully sucker") is a type of specialized tank truck with suction gear which can suck wastewater and mud and sludge out of hollows such as the hollows below drain grids in street gutters and carry it to a suitable disposal point. It needs to be able to suck out and pump through into its tank any road grit and ...
[note 1] An example of such a double-acting fuze is the British WW II Fuze, D.A. and percussion, No. 119 [1] This fuze uses a nose striker, as for the original No. 106, but is rather more complex with an added inertia mechanism for grazing impacts and also three automatic safety devices. Simple contact impacts drive the striker back into the ...
M734 fuze cross section Amplifier (top) and oscillator. The M734 multi-option fuze [1] is a rangefinder and collision detection system used on 60 mm, 81 mm, and 120 mm mortar shells as a trigger to detonate the shells at the most damaging heights of burst when combating four types of battlefield threats:
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