Vagal maneuvers are used to try to slow an episode of fast heart rate. These simple maneuvers stimulate the vagus nerve, sometimes resulting in slowed conduction of electrical impulses through the atrioventricular (AV) node of the heart. Be sure to talk to your doctor before trying these. Vagal maneuvers that you can try to slow your fast heart rate include: Gagging. Holding your breath and bearing down (Valsalva maneuver). Immersing your face in ice-cold water (diving reflex).
Some examples of renewable energy sources are solar energy, wind energy, hydropower, geothermal energy, and biomass energy. These types of energy sources are different from fossil fuels, such as coal, oil, and natural gas.
possesses enormous potential for the development of renewable energy. The government has recently set targets to be reached by 2010 and 2020 for installed generating capacity. The two main sources of renewable energy for China will be from hydropower and wind power. Hydropower (China accounts for 12% of world hydropower) is expected to reach a capacity of 190 GW by 2010 and 300 GW by 2020. Wind, the other large source of renewable energy, is expected to reach 10 GW by 2010 and 30 GW by 2020. Biomass is