| http://www.w3.org/ns/prov#value | - similar to FIG. 1A of the vessel positioned between two pairs of heater elements and showing a top pair of the elements in a closed position and a bottom pair of the elements in an opened position so that generally all of the reaction mixture is positioned between and heated by the bottom pair of elements. [0018]FIG. 1C is a diagrammatic view similar to FIGS. 1A and 1B showing the bottom pair of
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