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.
Oil prices remained above $100 a barrel, however. Unlike traditional reservoirs, shale is a low-porosity rock from which oil and gas will not flow freely without additional stimulation from hydraulic fracturing or fracking. Shale gas production was pioneered in the early 2000s by US independent companies such as Devon Energy and Chesapeake Energy. View.