Flows passing sudden diameter expansion of ducts can be found in many industrial situations such as flows in annular spaces between drill pipes and open or cased holes while circulating drilling fluids down the wells and ...

Continued advances in technology have increased the demand of crude oil. The most common types of problems encountered in oil and gas production operations is Emulsions (Normal or Reverse). The formation of water and oil ...

Artimisa herba and Erodium antimicrobial activity were used against Serratia spp., Bacillus cereus, E.coli, Micrococcus roseus, Staphylococcus aureus, Streptomyces spp.and Micrococcus lutaus. The method of extraction applied ...