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A simplified model for a spacecraft ZPM is a sailboat. A sailboat tacks against the wind to travel in a zig-zag manner without using its outboard motors thus not using any propellant. The sailboat takes advantage of the winds just like ZPM takes advantage of spacecraft environmental disturbances.
3D model . Interactive image; SMILES [Pm+3].[N-3] ... Promethium nitride is a binary inorganic compound of promethium and nitrogen with the chemical formula PmN. [1] [2]
MM 2: Burmese copy of the PMN-1 used in Myanmar. [9] Gyata 64: Hungarian copy of the PMN-1. [10] PM-79 mine: Bulgarian variant of the PMN-1. [11] MS-3: Has existed since at least 1973. It looks similar to the PMN-1, but has a small "blister" in the centre of the pressure-plate, incorporating a spring-loaded, pressure-release anti-handling device.
1-nitropropane is produced industrially by the reaction of propane and nitric acid. This reaction forms four nitroalkanes: nitromethane, nitroethane, 1-nitropropane, and 2-nitropropane. 1-nitropropane is also a byproduct of the process for making 2-nitropropane, which is done by vapour phase nitration of propane.
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The PMN-150 produces approximately 1,500 fragments that have an effective range of 150 meters. The PMN-250 is a larger mine which produces 2,100 fragments that have an effective range of 250 meters. The mines have a number of electronic fuzes available including three microwave fuzes, an acoustic fuze and a seismic sensor.
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The crash took place at around 1 p.m. local time Thursday while the aircraft was operating over the Palisades Fire near the Pacific Coast, according to Los Angeles Fire Department spokesperson ...