surface recombination rate
111Planetary nebula — A planetary nebula is an emission nebula consisting of a glowing shell of gas and plasma formed by certain types of stars when they die. The name originated in the 18th century because of their similarity in appearance to giant planets when… …
112Transmission and infection of H5N1 — from infected avian sources to humans is a concern due to the global spread of H5N1 that constitutes a pandemic threat.Infected birds pass on H5N1 through their saliva, nasal secretions, and feces. Other birds may pick up the virus through direct …
113hydrogen — /huy dreuh jeuhn/, n. a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements. Symbol: H; at. wt.: 1.00797; at. no.: 1; density: 0.0899 g/l at 0°C and 760 mm pressure. [1785 95;… …
114photostationary — |fōd.(ˌ)ō+ adjective Etymology: phot + stationary : of, relating to, or being a stationary state in which the rate of photochemical dissociation of reactants is equaled by the rate of recombination * * * photostationary to surface: see photo 1 …
115Plasma ashing — In semiconductor manufacturing plasma ashing is the process of removing the photoresist from an etched wafer. Using a plasma source, a monatomic reactive species is generated. Oxygen or fluorine are the most common reactive species. The reactive… …
116Gamma ray burst — [ GRB 990123 taken on January 23, 1999. The burst is seen as a bright dot denoted by a square on the left, with an enlarged cutout on the right. The object above it with the finger like filaments is the originating galaxy. This galaxy seems to be …
117Lithium-ion battery — Batteries caption=Lithium ion battery of Varta, Museum Autovision, Altlußheim, Germany EtoW=160 Wh/kg EtoS=270 Wh/l PtoW=1800 W/kg CtoDE=99.9% [Cite web | title = BatteryUniversity.com: Charging lithium ion batteries | first = Isidor | last =… …
118Age of the universe — The age of the universe is the time elapsed between the theory of the Big Bang and the present day. Current observations suggest that this is about 13.73 billion years, with an uncertainty of about +/ 120 million years. The lowering of the… …
119Sailfin molly — Taxobox name = Sailfin molly image caption = Male regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Cyprinodontiformes familia = Poeciliidae genus = Poecilia species = P. latipinna binomial = Poecilia latipinna binomial… …
120Somatic evolution in cancer — Somatic evolution is the accumulation of mutations in the cells of a body (the soma) during a lifetime, and the effects of those mutations on the fitness of those cells. Somatic evolution is important in the process of aging as well as the… …
