(See How Catalytic Converters Work for more details.). Controlling the engine is the most processor-intensive job on your car, and the engine control unit (ECU) is the most powerful computer on most cars.
â¢ Accidental poisoning is one of the leading causes of GI ulcer disease. This can be from plants (for example, toxic mushrooms, castor beans, or sago palm), pesticide or rodenticide toxicity, chemical poisoning (often with ethylene glycol or phenol), or heavy metal poisoning involving zinc, iron, or arsenic.
A peptic ulcer in the stomach is also called a gastric ulcer. Ulcers may be caused by lifestyle factors like diet and stress, or an excess amount of stomach acids. However, the majority are caused by an infection caused by the bacterium Helicobacter pylori (H. pylori). A considerable percentage of stomach ulcers are not directly caused by stress or diet, they are caused by Helicobacter pylori, which is a bacteria-not a virus. 2  A Nobel Prize was awarded to Australian scientists Barry Marshall and Robin Warren for this discovery.