What is DMS? Sonography can be used to examine many parts of the body, such as the abdomen, breasts, female reproductive system, prostate, heart, and blood vessels. Sonography is increasingly being used in the detection and treatment of heart disease, heart attack, and vascular disease that can lead to stroke.
For other uses, see Mass action (disambiguation) . In chemistry, the law of mass action is a mathematical model that explains and predicts behaviours of solutions in dynamic equilibrium. Simply put, it states that the rate of a chemical reaction is proportional to the product of the masses of the reactants.
Class action. A class action, class suit, or representative action is a type of lawsuit where one of the parties is a group of people who are represented collectively by a member of that group. The class action originated in the United States and is still predominantly a U.S. phenomenon, but Canada, as well as several European countries with civil law have made changes in recent years to allow consumer organizations to bring claims on behalf of consumers.