Energy content of biofuel (J/kg) or equivalent units. Energy density is the amount of energy stored in a fuel per unit volume, expressed in SI units as joule per litre (J/L) or equivalent units. The table below includes entries for popular substances already used for their energy, or being discussed for such use. The second column shows specific energy, the energy content in megajoules per unit of mass in kilograms, useful in understanding the energy that can be extracted from the fuel. The third column in the table lists energy density, the energy content per liter of volume, which is useful for understanding the
Work unit Communist Party infrastructure. Work units were the principal method of implementing party policy. Also workers were bound to their work unit for life. Each "danwei" created their own housing, child care, schools, clinics, shops, services, post offices, etc. The unit concept used in developing the work unit comes from Hegelian and especially behaviorist social science. Other related examples include the neighbourhood unit in developments, study of living creatures at the level of a defined ecological unit, the entity concept from accounting, the strategic business unit in commerce, the unit concept of church fellowship in the Wisconsin Evangelical Lutheran Synod, the