constraining
121Protoplanetary disk — A protoplanetary disk (or proplyd) is a rotating circumstellar disk of dense gas surrounding a young newly formed star, a T Tauri star or Herbig star. The protoplanetary disk may be considered an accretion disk because gaseous material may be… …
122Observable universe — For a general discussion of the universe, see Universe. Visualization of the 93 billion light year – or 28 billion parsec – three dimensional observable universe. The scale is such that the fine grains of light represent collections of large… …
123Lexical functional grammar — (LFG) is a grammar framework in theoretical linguistics, a variety of generative grammar. The development of the theory was initiated by Joan Bresnan and Ronald Kaplan in the 1970s, in reaction to the direction research in the area of… …
124Fernand Braudel — (August 24 1902 ndash;November 27 1985), was the foremost French historian of the postwar era, and a leader of the Annales School. He organized his scholarship around three great projects, each worth several decades of intense study: The… …
125Teratoma — Classification and external resources Micrograph of a teratoma showing tissue from all three germ layers: mesoderm (immature cartilage left upper corner of image), endoderm (gastrointestinal glands cente …
126Quebec sovereignty movement — The Quebec sovereignty movement ( fr. Mouvement souverainiste du Québec) is a political movement aimed at either attaining independent statehood (sovereignty) or some degree of greater political autonomy [… …
127Honoré Daumier — (photograph by Nadar). Birth name Honoré Victorin Daumier Born February 26, 1808(1808 02 26) …
128Owner-occupier — An owner occupier (also known as an owner occupant or home owner) is a person who lives in and owns the same home. It is a type of housing tenure. The home of the owner occupier may be, for example, a house, apartment, condominium, or a housing… …
