Search results
Results from the WOW.Com Content Network
Sand containing gamma-emitting tracer isotopes is used to trace and measure fractures. [citation needed] A 1995 study found that radioactive tracers were used in over 15% of stimulated oil and gas wells. [109] In the United States, injection of radionuclides are licensed and regulated by the Nuclear Regulatory Commission (NRC). [110]
This 60 Co from the tower would have been scattered over the site reducing the difference in the soil levels. The 133 Ba (half life 10.5 year) and 241 Am (half life 432.6 year) are due to the neutron activation of barium and plutonium inside the bomb.
Fluorine-18 is one of the early tracers used in positron emission tomography (PET), having been in use since the 1960s. [4] Its significance is due to both its short half-life and the emission of positrons when decaying.
In Cincinnati, some 200 patients were irradiated over a period of 15 years. In Chicago, 102 people received injections of strontium and caesium solutions. In Massachusetts, 73 children were fed oatmeal laced with radioactive tracers in an experiment sponsored by MIT and the Quaker Oats Company .
Hydraulic fracturing is the propagation of fractures in a rock layer by pressurized fluid. Induced hydraulic fracturing or hydrofracking, commonly known as fracking, is a technique used to release petroleum, natural gas (including shale gas, tight gas and coal seam gas), or other substances for extraction, particularly from unconventional reservoirs. [1]
Then came positron emission tomography (PET) scans, which light up the proteins with radioactive tracers. Now, blood tests can detect the proteins and are increasingly used in people with mild ...
A radioactive tracer, radiotracer, or radioactive label is a synthetic derivative of a natural compound in which one or more atoms have been replaced by a radionuclide (a radioactive atom). By virtue of its radioactive decay , it can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from ...
The environmental isotopes are a subset of isotopes, both stable and radioactive, which are the object of isotope geochemistry.They are primarily used as tracers to see how things move around within the ocean-atmosphere system, within terrestrial biomes, within the Earth's surface, and between these broad domains.