viable
121Latin America, history of — Introduction history of the region from the pre Columbian period and including colonization by the Spanish and Portuguese beginning in the 15th century, the 19th century wars of independence, and developments to the end of World War II.… …
122Hybrid (biology) — In biology and specifically, genetics, the term hybrid has several meanings, all referring to the offspring of sexual reproduction.[1] In general usage, hybrid is synonymous with heterozygous: any offspring resulting from the mating of two… …
123Fusion power — The Sun is a natural fusion reactor. Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power). In doing so they release a …
124Sound film — …
125Population bottleneck — followed by recovery or extinction A population bottleneck (or genetic bottleneck) is an evolutionary event in which a significant percentage of a population or species is killed or otherwise prevented from reproducing.[1] A slightly different… …
126Porter generic strategies — Michael Porter has described a category scheme consisting of three general types of strategies that are commonly used by businesses to achieve and maintain competitive advantage. These three generic strategies are defined along two dimensions:… …
127Severn Barrage — The Severn Barrage is the name of a number of ideas for building a barrage from the English coast to the Welsh coast over the Severn tidal estuary. Ideas for damming or barraging the Severn estuary (and Bristol Channel) have existed since the… …
128Dor procedure — In 1985, Vincent Dor, MD, introduced endoventricular circular patch plasty (EVCPP), or the Dor procedure, as a viable method for restoring a dilated left ventricle to its normal, elliptical geometry. The Dor procedure, which uses a circular… …
