Energy content of biofuel Energy content of biofuel The Energy content of biofuel is a description of the potential energy contained in a given biofuel, measured per unit mass of that fuel, as specific energy, or per unit of volume of the fuel, as energy density. A biofuel is a fuel, produced from living organisms. Biofuels include bioethanol, an alcohol made by fermentation—often used as a gasoline additive, and biodiesel, which is usually used as a diesel additive. Specific energy is energy per unit mass, which is used to describe the energy content of a fuel, expressed in SI units as joule per kilogram
Work unit Work unit A unit or danwei () is the name given to a place of employment in the People's Republic of China. While the term "danwei" remains in use today it is more properly used to refer to a place of employment during the period when the Chinese economy was not as developed and more heavily reliant on welfare for access to long-term urban workers or when used in the context of one of state-owned enterprises. Prior to Deng Xiaoping's economic reforms, a work unit acted as the first step of a multi-tiered hierarchy linking each individual with the central