(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.
Causes of Upper GI Bleeding. Peptic ulcers (open sores that develop in the lining of your stomach or duodenum (initial part of the small intestine)) are a common cause of GI bleeding. Peptic ulcers are most commonly caused by a bacterial infection known as H. pylori.