photovoltaic-thermal (PV/T) system â A photovoltaic system that, in addition to converting sunlight into electricity, collects the residual heat energy and delivers both heat and electricity in usable form. Also called a total energy system or solar thermal system.olar cooling â The use of solar thermal energy or solar electricity to power a cooling appliance. Photovoltaic systems can power evaporative coolers (swamp coolers), heat-pumps, and air conditioners.
HEPATITIS B VACCINATION The first hepatitis B vaccine became commercially available in the United States in 1982. In 1986, a hepatitis B vaccine produced by recombinant DNA technology was licensed and a second recombinant-type hepatitis B vaccine was licensed in 1989.
Blue Bloods (season 4) The fourth season of Blue Bloods, a police procedural drama series created by Robin Green and Mitchell Burgess, premiered on CBS on September 27, 2013. Leonard Goldberg serves as executive producer. According to TV by the Numbers, CBS was all but guaranteed to commit to a fourth season.