They may be a sign that the gas comes from localized sources or disappears into localized sinks. (scientificamerican.com)
This enabled the scientists to localize the source of water to two darker spots on the surface of Ceres, previously seen by NASA's Hubble Space Telescope and ground - based telescopes. (sciencedaily.com)
To localize the source of his seizure and identify which nearby tissue could be surgically removed without major loss of function, Parvizi's team implanted so - called subdural intracranial electrodes into Blackwell's brain that would not only monitor neuronal activity but could also apply electric current and so stimulate the adjacent part of the brain. (scientificamerican.com)