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2011
It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.
The effect of a cavitation attack in the presence of pseudohomogeneous catalyst additives on the chemical composition of primary coal tar was studied. It was found that, upon the introduction of metal salts into coal tar, they underwent reduction followed by sulfidization; the resulting iron and nickel sulfides were nearly spherically shaped.