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A critical section object in the user mode needs kernel intervention to ensure mutual exclusion.
Background Radiation
The ambient ionizing radiation present in the environment, originating from natural and artificial sources.
Medical X-rays
A form of electromagnetic radiation used in healthcare to generate images of the inside of a body, aiding in diagnosis and treatment.
Isotopes
Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number, but not in proton number.
Hydrogen
The lightest and most abundant element in the universe, consisting of one proton and typically one electron.
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