| http://www.w3.org/ns/prov#value | - The inorganic compound used in this invention includes, for example, metal oxides such as magnesium oxide, calcium oxide, aluminum oxide (alumina), silicon dioxide (silica), and titanium dioxide; metal hydroxides such as magnesium hydroxide, calcium hydroxide, aluminum hydroxide, and ortho-titanic acid; metal carbonates such as potassium carbonate, sodium bicarbonate, sodium carbonate, magnesium c
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