ISO (International Organization for Standardization) envelope sizes are the official international metric envelope sizes; however, Japan uses JIS (Japan Industrial Standard) and metricated traditional envelope sizes. N.B.
Peptic ulcers are holes or breaks in the protective lining of the duodenum (the upper part of the small intestine) or the stomach -- areas that come into contact with stomach acids and enzymes. Duodenal ulcers are more common than stomach ulcers.Comparatively rare are esophageal ulcers, which form in the esophagus -- or swallowing tube -- and are often a result of exposure to medications, like certain antibiotics or anti-inflammatories, or alcohol abuse.veruse of over-the-counter painkillers (such as aspirin, ibuprofen, and naproxen), heavy alcohol use, psychological stress, and smoking exacerbate and may promote the development of ulcers, especially in someone with H. pylori. Other studies show that stomach ulcers are more likely to develop in older people.
The majority of peptic ulcers are caused by a bacterial infection of the stomach called Helicobacter pylori. This infection is often asymptomatic and can be acquired in childhood. The other cause of ulcers is the regular use of aspirin and anti â inflammatory medicines.irst off, let's not buy into the myth that ulcers are caused by a bacteria called H. pylori. Just not true. Ulcers are caused by the prior use of a medication that destroyed your mucosal lining, thus leaving your stomach tissue exposed to your own digestive acids, which then eat a hole right through the flesh.