A permission is authorization to perform an operation on a specific object, such as a file. Permissions are granted by owners. If you own an object, you can grant any user or security group permission to do whatever you are authorized to do with it. This includes granting permission to take ownership.
Fracking linked to radioactive river water in Pa. River water in western Pennsylvania has elevated levels of radioactivity, some of it from fluids discharged after fracking for natural gas in the Marcellus Shale area, says a Duke University study Wednesday. Post to Facebook.
Leaks in underground pipelines can be detected by the injection of a radioactive isotope. This is achieved by adding a small amount of a radioisotope which is a source of beta radiation to the fluid.The area above ground where a high intensity of beta radiation is detected will pin point the leak source in the pipeline. This saves time as the correct area is dug up.his is achieved by adding a small amount of a radioisotope which is a source of beta radiation to the fluid. The area above ground where a high intensity of beta radiation is detected will pin point the leak source in the pipeline. This saves time as the correct area is dug up.