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.
The stomach âbugâ is usually a sickness caused by a virus which spreads from person to person or through food contamination. Symptoms usually appear 1 to 2 days after exposure.Symptoms are often mild and usually only last a day or two.You may experience some of the following symptoms:1  Upset Stomach.he stomach âbugâ is usually a sickness caused by a virus which spreads from person to person or through food contamination. Symptoms usually appear 1 to 2 days after exposure.