calculus. Calculus, which was discovered by Newton and Liebniz, nothwithstanding all credit being given to Newton, is one of the most beautiful forms of intellectual material. Calculus requires and emphasizes the development of new methods of thinking, and therefore it is not for the weak minded.
Bacterial gastroenteritis happens when bacteria causes an infection in your gut. This causes inflammation in your stomach and intestines. You may also experience symptoms like vomiting, severe abdominal cramps, and diarrhea. While viruses cause many gastrointestinal infections, bacterial infections are also common.
What are the symptoms? When you have stomach flu, you may have one or more of the following symptoms: nausea vomiting stomach cramps diarrhea mild fever fatigue chills loss of appetite muscle aches The illness may develop over a period of hours, or it may suddenly start with stomach cramps, vomiting, or diarrhea.