Abstract: What is provided is a system, computer-implemented method, apparatus and article for interacting with video, audio and/or picture content by providing business rules, response rules, instructions and/or URL pointer data for client side generation. The system does not receive nor store the video, audio and/or picture content, nor the interactive content piece to be enabled upon the video, audio and/or picture content.

Abstract: A process for the elimination of iron from silica sand, comprising: abrasive-attritioning sand particles by subjecting the sand particles, in a single step and under dry conditions, to centrifugal rotation and simultaneously imparting an agitation with a translative eccentric movement and downstream and upstream movements causing that substantially all the sand particles be abrasive attritioned to each other wearing their surfaces to remove impurities covering said sand particles; and separating said iron impurities from said sand particles by magnetic separation, flotation or other known methods, thus simplifying the conventional processes just to one attrition step and suppressing the chemical treatment with acids or alkalis which was necessary in conventional processes.