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
The Year's Work in Modern Language Studies comprehensive bibliographical listings waned somewhat, and the focus of the work became more strongly evaluative. Traditionally the contributors to YWMLS were scholars of Modern Languages at British universities, and there was a strong focus on British scholarship. However since the beginning of the 21st century there have been a growing number of American and continental European contributors, and the focus has become more international. The Year's Work in Modern Language Studies The Year's Work in Modern Language Studies ("YWMLS") is an English-language evaluative bibliographical journal which appears annually, containing reports on new scholarship in the fields of European languages, linguistics,