It suppresses ignition noises from sparks. Resistor spark plugs prevent electrical interference that can disrupt car radio reception, two-way radio and cellular phone operation. This type of spark plug also prevents electrical noise from interfering with the operation of the computer in the engine. 1  Noise suppression effects of a resistor spark plug. (Compared with one of our conventional types) 2  As shown above, noise is reduced in all frequency zones by installing resistor spark plugs.
This is the first time we have taken a comprehensive view of mental illness on its own.. Estimates of mental illness -- such as major depressive disorder and other mental health problems -- were made based on data from the 2009 National Survey on Drug Use and Health, which polls about 68,700 Americans ages 12 and up.
Mental Disorders in America. Mental disorders are common in the United States and internationally. An estimated 22.1% of Americans ages 18 and older-about 1 in 5 adults-suffer from a diagnosable mental disorder in a given year. When applied to the 1998 U.S. Census residential population estimate, this figure translates to 44.3 million people.