One of the most important standards that the API has set is the method used for measuring the density of petroleum. This standard is called the API gravity. Specific gravity is a ratio of the density of one substance to the density of a reference substance, usually water.
The most common symptoms of RSI include: 1  Pain. 2  Tingling. 3  A feeling of restlessness in the joint. 4  Weakness. 5  Throbbing. 6  Stiffness or cramp.
Types[edit] There are more than a hundred different kinds of liver disease,symptoms may include jaundice and weight loss. Fascioliasis, a parasitic infection of liver caused by a Liver fluke of the Fasciola genus, mostly the Fasciola hepatica.