Piperine, along with its isomer chavicine, is the alkaloid responsible for the pungency of black pepper and long pepper. It has been used in some forms of traditional medicine.
In the Japanese constitutional monarchy, the emperor does not have any political power. In world politics, he is the only current emperor. The current emperor is His Imperial Majesty the Emperor Akihito. He has been on the Chrysanthemum Throne since his father Emperor ShÅwa (Hirohito) died in 1989. The amount of power belonging to the emperor of Japan has changed a lot throughout Japanese history.
The counting of Japanese years follows the Gregorian calendar with the year starting on January 1st and ending on December 31st, yet it would be a rare occurrence that the death of an Emperor conveniently conforms to these dates. When an Emperor dies mid-year, that year can therefore have two names.