(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 peptic ulcers include: 1  H. pylori bacteria (Helicobacter pylori ). Most ulcers are caused by an infection from a bacteria or germ called H. pylori. 2  NSAIDs (nonsteroidal anti-inflammatory drugs). These are over-the-counter pain and fever medicines such as aspirin, ibuprofen, and naproxen.