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randomly for the study. they were divided into groups. pre and post saliva samples were collected before and after the administration of the respective mouth rinse. the microbial count was calculated from the samples. results. among the groups chlorhexidine showed better antimicrobial property than crude...
[read release] suncor energy declares dividend may , the covid- pandemic and the associated rapid demand reduction and the crude oil supply shock as a result of the opec+ production decisions are expected to keep crude oil prices lower for at least......
bitumen, and that obtained by the distillation of crude oil is called refined bitumen. it is now possible to produce bitumen from non-petroleum based renewable resources such as sugar , molasses , or starch . materials that contain bitumen are described as bituminous, such as bituminous coal and bituminous...