Disassembly of the nuclear envelope must occur for kinetochore microtubules to form in animal cells. This disassembly of nuclear envelope is triggered by the cyclin-dependent kinase at the onset of mitosis. The reassembly is mediated by multiple interactions of the INM proteins with chromatin. Dephosphorylation of INM proteins at late anaphase/telophase is required for nuclear envelope reassembly.
It is a fact that nuclear energy is converted into thermal energy in the core of a nuclear reactor. This is because it is part of a power plant fission act, where nuclear energy heats up water in a nearby vicinity.