Embryo

An embryo is a multicellular diploid eukaryote in its earliest stage of development, from the time of fertilization through sexual reproduction until birth, hatching, or germination.

In humans, an embryo is generally considered to be between the first and the eighth week of development after fertilization, and from then it is instead called a fetus. While most organ systems develop from the third week to the eighth, embryonic life begins at conception.

The development of the embryo is called embryogenesis. In organisms that reproduce sexually, once a sperm fertilizes an egg cell, the result is a cell called the zygote, which possesses half the DNA of each of its two parents. In plants, animals, and some protists, the zygote will begin to divide by mitosis to produce a multicellular organism. The result of this process is an embryo.

Etymology

First attested in English in the mid-14c., the word embryon derives from Medieval Latin embryo, itself from Greek ἔμβρυον (embruon), lit. "young one", which is the neuter of ἔμβρυος (embruos), lit. "growing in", from ἐν (en), "in" and βρύω (bruō), "swell, be full"; the proper Latinized form of the Greek term would be embryum.

Pink Floyd bootleg recordings

Pink Floyd bootleg recordings are the collections of audio and video recordings of musical performances by the British rock band Pink Floyd, which were never officially released by the band. The recordings consist of both live performances and outtakes from studio sessions unavailable in official releases. In some cases, certain bootleg recordings may be highly prized among collectors, as at least 40 songs composed by Pink Floyd have never been officially released.

During the 1970s, bands such as Pink Floyd created a lucrative market for the mass production of unofficial recordings with large followings of fans willing to purchase them. In addition, the huge crowds that turned up to these concerts made the effective policing of the audience for the presence of recording equipment virtually impossible. Vast numbers of recordings were issued for profit by bootleg labels.

Some Pink Floyd bootlegs exist in several variations with differing sound quality and length because sometimes listeners have recorded different versions of the same performance at the same time. Pink Floyd was a group that protected its sonic performance, making recording with amateur recording devices difficult. In their career, Pink Floyd played over 1,300 concerts, of which more than 350 were released as bootlegged recordings (sometimes in various versions). Few concerts have ever been broadcast (or repeated once they were broadcast on television), especially during 'the golden age' of the group from 1966 to 1981.

Embryo (1976 film)

Embryo is a 1976 science fiction horror film directed by Ralph Nelson and starring Rock Hudson alongside Barbara Carrera, with a cameo appearance by Roddy McDowall. It deals with the mental and physical consequences of growing a human embryo in an artificial uterus.

Plot

Dr. Paul Holliston (Hudson) is a geneticist who has been living alone in his rambling clinic, which he operates out of his home, after losing his wife in a car crash. This leads to his feeling constant pangs of guilt from his sister-in-law Martha Douglas (Diane Ladd), who has become his assistant.

One night, Holliston runs over a pregnant doberman dog. The dog is fatally injured, but Holliston manages to save one of her unborn puppies by gestating it in an artificial uterus. Because the device still requires nutrients to be supplied by the mother, he must drastically shorten the gestation period: to this end, he uses an experimental growth hormone made from human placental lactogen, which speeds up the embryo's growth.

Raft

A raft is any flat structure for support or transportation over water. It is the most basic of boat design, characterized by the absence of a hull. Although there are cross-over boat types that blur this definition, rafts are usually kept afloat by using any combination of buoyant materials such as wood, sealed barrels, or inflated air chambers (such as pontoons), and are typically not propelled by an engine.

Human-made rafts

Traditional or primitive rafts are constructed of wood or reeds. Modern rafts may also use pontoons, drums, or extruded polystyrene blocks . Inflatable rafts use durable, multi-layered rubberized fabrics. Depending on its use and size, it may have a superstructure, masts, or rudders. Timber rafting is used by the logging industry for the transportation of logs, by tying them together into rafts and drifting or pulling them down a river . This method was very common up until the middle of the 20th century but is now used only rarely.

The type of raft used for recreational rafting is almost exclusively an inflatable boat, manufactured of flexible materials for use on whitewater.

Raft (disambiguation)

Raft may refer to:

Raft, as a person, may refer to:

Raft, as a location, may refer to:

Raft may also refer to:

Raft (band)

Raft is a French pop band active in the 1980s, most notable for their 1987 hit single, "Yaka dansé (l'arborigène)".

Biography

The band was a duet composed of Christian Fourgeron (guitar, vocals) and Pierre Schott (guitar, bass, vocals, born 24 April 1958). They begin their musical career in 1985 with their single "Io (c'est ça)" which passed unnoticed in France. However, in 1987, they had their first hit with "Yaka dansé (l'arborigène)", which was a number 2 hit in France, and earned a gold disc. The single was succeeded by "Femmes du Congo", which achieved a moderate success in comparison. The band's songs contained many puns and dealt with grave themes of society, sung on joyful music. In 1988, they released their first album entitled Madagascar and was the opening act for Niagara's concerts. In 1990, the band split up and both members started a solo career.

More recently, the reformed group participated in the concert tour named RFM Party 80, which started in 2006.

Discography