Chalazion Causes. Chalazion causes vary, but they are basically caused by a blockage or obstruction of the ducts in the meibomian glands. These glands are responsible for lubricating the film of tears with lipid material â a combination of oil and mucus.halazion Causes, Signs, and Symptoms. Signs and symptoms of a chalazion include eyelid swelling and tenderness, sensitivity to light, more frequent tearing and heaviness of the eyelid. A chalazion tends to point towards the nose.
Nuclear Plants. Nuclear plants use the fission process to generate the energy needed to produce electricity. In a nuclear plant, atoms of low-grade uranium are split apart. This creates the heat needed to create steam. The highly pressurized steam then travels through pipes to fan-like blades in a turbine.
The energy produced by nuclear energy power plants is measured in megawatts. The United States tops the list with more than 101 megawatts of power produced. This is roughly one-fourth of the total nuclear energy produced in the world.France follows at a far second with energy output of 63 megawatts. Japan takes the third place followed by Russia and Germany, which completes the list of the top five countries that produce electricity from nuclear energy power plants.he radioactive waste takes years to be no longer hazardous. In addition there is a risk of a nuclear accident like the one at Chernobyl. In spite of that, with the help of modern technology many countries use nuclear power plants to generate electricity and the number of nuclear power plants is increasing every year.