A process for producing Portland cement clinker at low temperatures fixing the sulfur produced by burning high sulfur content coke fuel. The invention also describes a Portland cement clinker that includes new additional phases.

 
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< Composition for an injectable bone mineral substitute material

> OPTICAL ELEMENTS MADE FROM CERAMICS COMPRISING ONE OR MORE OXIDES OF Y, Sc, In AND/OR LANTHANIDE ELEMENTS AND MAPPING OPTICS INCLUDING THE OPTICAL ELEMENTS

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