Streptomycin is also occasionally used to treat infections such as brucellosis and endocarditis. As for TB, when treating these infections, streptomycin should be used in combination with another antibiotic to help prevent resistance occuring.
DEFINITION of 'Oil Shale'. A type of sedimentary rock composed chiefly of a combination of silt and clay. Shale may contain kerogen, a type of organic matter that yields oil and gas.
Petroleum (also called crude oil) (ASTM Test Method D4175) meaning literally rock. oil is the term used to describe a myriad of hydrocarbon-rich fluids that has accumulated. in subterranean reservoirs and which vary dramatically in properties (Table 1).