All articles starting with F
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Fission product yield
Fission product yield is the probability, usually in percent per fission, that a given nuclide or mass chain is produced when a heavy nucleus undergoes fission; yields are key to reactor physics and decay heat.
Fission track dating
Fission track dating, also called fission track analysis, is a radiometric method that determines the age of apatite, zircon, and volcanic glass by counting damage trails from uranium fission.
Fission-fragment rocket
The fission-fragment rocket is a proposed spacecraft propulsion concept, first described by George Chapline in the late 1980s, that uses fission fragments directly as exhaust.
Fission-track thermochronology
Fission-track thermochronology is a dating method using damage trails from spontaneous uranium fission in minerals such as apatite and zircon to reconstruct rocks' low-temperature thermal histories.
Fissler
Fissler is a German family-owned manufacturer of premium cookware, founded in 1845 by tinsmith Carl Philipp Fissler in Idar-Oberstein and known for inventing the safe home pressure cooker in 1953.
Fissure
A fissure is a deep, narrow crack in rock or the earth, ranging from volcanic vents that erupt lava along linear cracks to ground fissures opened by subsidence.
Fist (telegraphy)
In telegraphy, a fist is an operator's individual hand-sending style in Morse code, distinctive enough that a receiving operator can identify the sender by sound alone.
Fist & Faith
Fist & Faith (青禾男高) is a 2017 Chinese action film directed by Jiang Zhuoyuan and starring Jing Tian and Ou Hao, set in Japanese-occupied 1930s Manchuria.
Fist bump
Fist bump, also called a dap greeting: two people tap closed fists together as an informal handshake alternative. Transfers far fewer bacteria than handshakes; popularized in sports and by COVID-19.
Fist Fight
Fist Fight is a 2017 American comedy directed by Richie Keen, starring Ice Cube and Charlie Day as teachers set to brawl in the parking lot after school.
Fist of Fury (精武门)
Fist of Fury (精武門, Jingwu Men), released in the US as The Chinese Connection, is a 1972 Golden Harvest kung fu film directed by Lo Wei, starring Bruce Lee as Chen Zhen avenging master Huo Yuanjia in Shanghai; it broke Hong Kong box office records and introduced Lee's nunchaku.
Fist of Legend (精武英雄)
Fist of Legend (精武英雄) is a 1994 Hong Kong martial arts film directed by Gordon Chan and starring Jet Li as Chen Zhen, a Jingwu student avenging his master in 1914 Shanghai.
Fist of the North Star
Fist of the North Star (北斗の拳, Hokuto no Ken) is a 1983–1988 postapocalyptic martial arts manga by Buronson and Tetsuo Hara about Kenshiro, heir of Hokuto Shinken, fighting his brother Raoh; adapted into 1984/2026 anime, films, games, and a record-selling pachislot.
Fist of the North Star: Lost Paradise (北斗が如く)
Fist of the North Star: Lost Paradise (Hokuto ga Gotoku) is a 2018 Sega/RGG Studio action RPG for PS4, an original non-canon Kenshiro story in Eden built on Yakuza-style combat and minigames; Metacritic 72, never ported to PC.
Fist of the White Lotus
Fist of the White Lotus (洪文定三破白蓮教), aka Clan of the White Lotus, is a 1980 Shaw Brothers kung fu film directed by and starring Lo Lieh, with Gordon Liu and Kara Hui; a loose sequel to Executioners from Shaolin in which the hero learns embroidery kung fu and acupuncture.
Fistball
Fistball: five-a-side net sport, one bounce allowed, played with fist or one arm on a 50x20 m court; ancient southern European roots, German rules from 1870, IFA founded 1960.
Fistball at the World Games
Fistball at the World Games: the IFA-governed outdoor fistball tournament at the IWGA's four-yearly World Games, on the program since London 1985, with Germany leading the medal table and Karlsruhe hosting in 2029.
Fisternae
Fisternae (Fisternas on the Tabula Peutingeriana) was a Roman road station in Sabine country between Interocrium and Amiternum, near modern Vigliano, known only from the Peutinger map.
Fisting
Fisting is a sexual practice of inserting a whole hand, sometimes to the wrist or forearm, into the vagina or rectum; it can be partnered or autoerotic.
Fistula
Fistula: an abnormal tunnel-like connection between two body parts such as organs, skin, or blood vessels. Types include anal, arteriovenous, vesicovaginal, and tracheoesophageal; causes include injury, surgery, infection, and Crohn's disease.
Fistula of appendix
Fistula of appendix (ICD-11 DB11.4): an abnormal communication between the vermiform appendix and a hollow viscus, vessels, or skin. Rare, 301 reported cases; commonest sites bladder and skin; commonest cause appendicitis.
Fistula of duodenum
Fistula of duodenum (ICD-11 DA50.2), an abnormal communication between the duodenum and skin or another organ; 3–14% of enterocutaneous fistulas, usually postoperative, with 7–40% mortality.
Fistula of large intestine
A fistula of the large intestine is an abnormal tract connecting the colon to the skin, a neighboring organ, or another bowel segment, most often caused by diverticulitis.
Fistula of small intestine
A fistula of the small intestine is an abnormal connection between the small bowel and another surface, usually the skin, arising after surgery in 85 to 95% of cases.
Fistula repair
Fistula repair, also known as vesicovaginal fistula repair, is surgery closing an abnormal opening between a woman's urinary tract or rectum and vagina to restore continence.
Fistula risk score
The fistula risk score (FRS) predicts the risk of a clinically relevant postoperative pancreatic fistula after pancreatoduodenectomy, scoring pancreatic texture, pathology, duct diameter, and blood loss.
Fistulae involving female genital tract
Fistulae involving female genital tract (ICD-11 GC04.1) are abnormal passages between the genital tract and bladder, urethra, rectum, or skin. Mostly obstetric injuries from obstructed labour; 50,000-100,000 new cases yearly; surgical closure 80-95%.
Fistulectomy
Fistulectomy is a surgical operation for anal fistula in which the entire fistula tract is excised over a probe, rather than laid open as in fistulotomy.
Fistulotomy
Fistulotomy is a surgical procedure that cuts open a fistula tract along its full length so the wound drains and heals; it is the standard operation for simple anal fistulas.
FIT (file format)
FIT (Flexible and Interoperable Data Transfer) is a compact binary file format created by Garmin for storing data from sport, fitness, and health devices such as GPS watches.