World Hepatitis Day, observed July 28, aims to raise global awareness of hepatitis B and hepatitis C and encourage prevention, diagnosis, and treatment. It has been led by the World Hepatitis Alliance since 2007 and in May 2010, it received global endorsement from the World Health Organization.
Medical Definition of joule. : a unit of work or energy equal to the work done by a force of one newton acting through a distance of one meter.
One joule can also be defined as: 1  The work required to move an electric charge of one coulomb through an electrical potential difference of one volt, or one 'coulomb volt (CÂ·V). 2  The work required to produce one watt of power for one second, or one watt second (WÂ·s) (compare kilowatt hour - 3.6 megajoules).