Fatigue (medical)

Fatigue (also called exhaustion, tiredness, languidness, languor, lassitude, and listlessness) is a subjective feeling of tiredness which is distinct from weakness, and has a gradual onset. Unlike weakness, fatigue can be alleviated by periods of rest. Fatigue can have physical or mental causes. Physical fatigue is the transient inability of a muscle to maintain optimal physical performance, and is made more severe by intense physical exercise. Mental fatigue is a transient decrease in maximal cognitive performance resulting from prolonged periods of cognitive activity. It can manifest as somnolence, lethargy, or directed attention fatigue.

Medically, fatigue is a non-specific symptom, which means that it has many possible causes. Fatigue is considered a symptom, rather than a sign because it is a subjective feeling reported by the patient, rather than an objective one that can be observed by others. Fatigue and 'feelings of fatigue' are often confused.

Classification

Physical fatigue

Exhausted (song)

"Exhausted" is the first Foo Fighters release and the lead single from the debut album. It was only issued as a promotional single, pressed on black 12" vinyl. The song is notable for being the first original Foo Fighters track released to the public, when it premiered January 8, 1995 on Eddie Vedder's Self-Pollution Radio broadcast.

Background

"Exhausted" is a song that dates from Dave Grohl's time in Nirvana. Grohl would regularly write and demo songs by himself, some of which would be tried out by the band. Kurt Cobain liked the song and was keen to record a version of it, but ultimately shied away since he was uncomfortable replacing Grohl's lyrics with his own.

Grohl did record a version of the song while still a member of Nirvana, along with bassist Krist Novoselic. It was among a handful of songs that the two recorded while waiting for Cobain to arrive for the band's last ever studio session at Robert Lang Studios in Seattle in 1994.

Composition

"Exhausted" is a mid-tempo melancholic rock song in the key of D minor. The song is played with guitars tuned down to Drop-D, with the low E string (sounding as D) being picked to add to the droning sound. The song is notable for its heavy distortion or fuzz, which is often allowed to feed back and break up.

Wheat

Wheat (Triticum spp.) is a cereal grain, originally from the Levant region of the Near East but now cultivated worldwide. In 2013, world production of wheat was 713 million tons, making it the third most-produced cereal after maize (1,016 million tons) and rice (745 million tons). Wheat was the second most-produced cereal in 2009; world production in that year was 682 million tons, after maize (817 million tons), and with rice as a close third (679 million tons).

This grain is grown on more land area than any other commercial food. World trade in wheat is greater than for all other crops combined. Globally, wheat is the leading source of vegetable protein in human food, having a higher protein content than other major cereals, maize (corn) or rice. In terms of total production tonnages used for food, it is currently second to rice as the main human food crop and ahead of maize, after allowing for maize's more extensive use in animal feeds. The archaeological record suggests that this first occurred in the regions known as the Fertile Crescent.

Wheat (color)

Wheat is a color that resembles wheat.

The first recorded use of wheat as a color name in English was in 1711.

Wheat is one of the X11 web colors.

References

See also

Wheat (disambiguation)

Wheat may refer to:

See also:

Fixer

Fixer or The Fixer may refer to:

In places

In arts, entertainment, and media

In comics and literature

In film and television

Photographic fixer

Photographic fixer is a mix of chemicals used in the final step in the photographic processing of film or paper. The fixer stabilises the image, removing the unexposed silver halide remaining on the photographic film or photographic paper, leaving behind the reduced metallic silver that forms the image. By fixation, the film or paper is insensitive to further action by light. Without fixing, the remaining silver halide would darken and cause fogging of the image. Fixation is commonly achieved by treating the film or paper with a solution of thiosulfate salt. Popular salts are sodium thiosulfate—commonly called hypo—and ammonium thiosulfate—commonly used in modern rapid fixer formulae. Fixation involves these chemical reactions (X = halide, typically Br⁻):

Fixer is used for processing all commonly used films, including black-and-white films, Kodachrome, and chromogenic films. In chromogenic films, the remaining silver must be removed by a chemical mixture called a bleach fix, sometimes shortened to blix. This mixture contains ammonium thiosulphate and ferrous EDTA, a powerful chelating agent.