Semicolons are used to mark a break between two parts of a sentence. Usually the two parts that are separated in this way are Finite Clauses, which could stand as sentences in their own right. You use a semicolon because you want to show that there is a close link between them:
He loved chasing women, but did not like them; it was the chase that excited him.
For Scientific english editing and Medical Writing Services visitwww.manuscriptedit.com