GBR-12935 is a piperazine derivative which is a potent and selective dopamine reuptake inhibitor. It was originally developed in its ³H radiolabelled form for the purpose of mapping the distribution of dopaminergic neurons in the brain by selective labelling of dopamine transporter proteins. This has led to potential clinical uses in the diagnosis of Parkinson's disease, although selective radioligands such as Ioflupane (¹²³I) are now available for this application. GBR-12935 is now widely used in animal research into Parkinson's disease and the dopamine pathways in the brain.

Diana Maria Chelaru (born August 15, 1993, in Oneşti, Romania) is a Romanian artistic gymnast. She is a world and European silver medalist on floor and a European bronze medalist on floor and with the team.

Chelaru started to train for gymnastics at CSS Oneşti Club with coaches Elena Dragomir, Octavian Teodoru and Ioana Dragomir. In 2005 she joined the junior national team where she trained with coaches Aurica Nistor, Lacramioara Moldovan, Cristian Moldovan, Carmen Bogasiu, Ingrid Istrate and Daniel Nistor. She moved to Deva National Training Center in 2008.

Her debut at a senior international competition was at the 2009 European Championships. Here she placed 14th in the all around finals. Later that year she competed at the Glasgow Grand Prix placing sixth on floor, seventh on vault and eight on uneven bars. Her first World Championships experience was at the 2009 World Championships in London. Here she placed 15th in the qualifications for floor and vault finals. She ended her first senior year by winning bronze all around at the Blume Memorial and silver all around at the Arthur Gander Memorial and by placing tenth at Swiss Cup.

The Honourable Usain St. Leo Bolt, OJ, C.D. ( /ˈjuːseɪn/; born 21 August 1986), is a Jamaican sprinter and a five-time World and three-time Olympic gold medalist. He is the world record and Olympic record holder in the 100 metres, the 200 metres and (along with his teammates) the 4×100 metres relay. He is the reigning Olympic champion in these three events, and is one of only seven athletes (along with Valerie Adams, Veronica Campbell-Brown, Jacques Freitag, Yelena Isinbayeva, Jana Pittman, Dani Samuels) to win world championships at the youth, junior, and senior level of an athletic event.

Bolt won a 200 m gold medal at the 2002 World Junior Championships, making him the competition's youngest-ever gold medalist at the time (since surpassed by Jacko Gill). In 2004, at the CARIFTA Games, he became the first junior sprinter to run the 200 m in less than 20 seconds with a time of 19.93 s, breaking the previous world junior record held by Roy Martin by two-tenths of a second. He turned professional in 2004, and although he competed at the 2004 Summer Olympics, he missed most of the next two seasons due to injuries. In 2007, he broke Don Quarrie's 200 m Jamaican record with a run of 19.75 s.

Imogen Jane Cairns (born 26 January 1989) is an English gymnast. She has won the British Junior Championship twice, in 2003 and 2004. She is coached by Liz Kincaid at the Academy of Gymnastics in Portishead, Somerset.

In 2005 at the DTB Cup, she placed 4th on vault and 3rd for her floor exercise. At the 2005 British Championships, she achieved 3rd in the all-around, 2nd for vault and 2nd for floor exercise. Cairns's first world championships were in 2005 in Melbourne, where she became the first British woman ever to qualify for a world vault final. She placed 8th, showing a Yurchenko with 1.5 twists and a piked Lucconi.

Her greatest achievement to date was winning a gold medal in the individual women's vault at the 2006 Commonwealth Games in Melbourne, Australia. She also won silver with England in the combined team event at the same competition. Cairns was narrowly denied a bronze medal in the all-around, behind Hollie Dykes of Australia, despite the fact that the latter had fallen on every piece of apparatus. The British federation complained bitterly about this on their official website, implying that the reason for the delay after Dykes' last score was because the judges were working out what to give her to ensure she would take the bronze.^{[citation needed]}

The FIM Trial World Championship and FIM X-Trial World Championship are the most prestigious motorcycle trials tournaments of the world, organised by the Fédération Internationale de Motocyclisme. The outdoor championship is held since 1964 and the indoor (X-Trial) since 1993.

From 1964 to 1967 the championship was named Challenge Henry Groutards. From 1968 to 1974, it was the Trial European Championship, and from 1975 onwards it has been known as the World Championship.

Up until 2010, the outdoor world trial championship has been won by 6 different pilots from the UK, 5 from Spain (all of them from Catalonia), 2 from Finland and France, and 1 from Belgium, Germany, USA, Japan and Sweden.

As of March 31, 2012, the following ranking shows the riders with most world titles, in outdoor, indoor and total:

As of March 31, 2012, the following ranking shows the countries with most world titles, in outdoor, indoor and total: