Marbled electric

The richest source of nicotinic acetylcholine receptors are the electric organs of the South American electric eel (Electrophorus electricus), the African electric catfish Malapterurus electricus) and the electric ray e.g. the marbled electric ray of the eastern Atlantic Ocean (Torpedo marmoratd) and the Californian electric ray in the northeastern Pacific (Torpedo califomica)) (Fig. 8.36). 

Electric eel (Electrophorus electricus) (left) and marbled electric ray (Torpedo marmorata) (right). 

Construction Bathtubs, shower stalls, hot tubs, spas, cultured marble, building panels, swimming pools, floor grating, doors, electrical boxes and cabinets, countertops, sinks, tanks, pipes, pipe linings, concrete rebar, bridges, concrete forming pans... 

Note 1) held in place by a plug of glass wool supported by indentations in the tube, followed by 100 ml. of marble chips which serve as a vaporizer and preheater for the reactants. The reaction tube is supported in an electrically heated furnace (Note 2) extending from the inlet tube to the joint connecting the condenser. 

The "marble-melt" process consists of producing I -inch l2.5-cenlimeter) marbles by a separate tank furnace, The marbles are then fed lo a bushing unit, which is heated by electrical resistance. From this point, the process is identical to the direct-melt prnccss. 

Because we have to overcome the electric repulsion this collision is a lot like pushing O 1 a marble up a bump in a track in order for it... 

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Petroleum fueled electrical power plants are also a major contributor to air pollution. Such power plants emit about 500 tons per day of sulfur into the environment in the form of sulfuric anhydride. This reacts with water resulting in the immediate formation of sulfuric acid. A French journalist, M. Ruze, has presented data to show that a French thermal power plant belonging to Electricite de France emits about 33 tons of sulfuric anhydride into the atmosphere on a daily basis. This can result in a daily production of about 50 tons of sulfuric acid. The after-math of acid production is acid rain, the adverse effect of which covers the power plant and surrounding territory up to a radius of 5 km. Such rains have high chemical activity. They corrode even cement and marble. 

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