In chemistry, the oxidation state, or oxidation number, is the hypothetical charge of an atom if all of its bonds to other atoms were fully ionic. It describes the degree of oxidation of an atom in a chemical compound. Conceptually, the oxidation state may be positive, negative or zero. Beside nearly-pure ionic bonding, many covalent bonds exhibit a strong ionicity, making oxidation state a useful predictor of charge.
The Canadian Football Hall of Fame (CFHOF) is a not-for-profit corporation, located in Hamilton, Ontario, that celebrates achievements in Canadian football. It is maintained by the Canadian Football League (CFL). It includes displays about the CFL, Canadian university football and Canadian junior football history.
5-HT receptors, 5-hydroxytryptamine receptors, or serotonin receptors, are a group of G protein-coupled receptor and ligand-gated ion channels found in the central and peripheral nervous systems. They mediate both excitatory and inhibitory neurotransmission. The serotonin receptors are activated by the neurotransmitter serotonin, which acts as their natural ligand.
Canada competed at the 2000 Summer Olympics in Sydney, Australia, held from 15 September to 1 October 2000. 294 competitors, 150 men, and 144 women, took part in 175 events in 29 sports.
The Unified Team at the 1992 Summer Olympics in Barcelona, Spain, was a joint team consisting of twelve of the fifteen former Soviet republics that chose to compete together; the states of Estonia, Latvia, and Lithuania competed separately. The team has been informally called the Commonwealth of Independent States team, though Georgia was not yet a member of the CIS when it competed as part of the Unified Team. Selected athletes from the Baltic states also competed on the Unified Team. It competed under the IOC country code EUN. A total of 475 competitors, 310 men and 165 women, took part in 234 events in 27 sports.
Kazakhstan competed in the Summer Olympic Games as an independent nation for the first time at the 1996 Summer Olympics in Atlanta, United States. Previously, Kazakhstani athletes competed for the Unified Team at the 1992 Summer Olympics. 96 competitors, 72 men and 24 women, took part in 99 events in 14 sports.
The 4 × 400 metre relay at the 2005 World Championships in Athletics was held at the Helsinki Olympic Stadium on August 13 and August 14.
The 4 × 400 metre relay at the 2005 World Championships in Athletics was held at the Helsinki Olympic Stadium on August 13 and August 14.
The Women's 4 × 400 metres relay event at the 1999 World Championships in Athletics was held at the Estadio Olímpico de Sevilla on August 28 and August 29.
The 5HT6 receptor is a subtype of 5HT receptor that binds the endogenous neurotransmitter serotonin (5-hydroxytryptamine, 5HT). It is a G protein-coupled receptor (GPCR) that is coupled to Gs and mediates excitatory neurotransmission. HTR6 denotes the human gene encoding for the receptor.
The women's 4 × 100 metres relay event at the 2008 Olympic Games took place on 21 and 22 August at the Beijing Olympic Stadium.
The women's 800 metres at the 2009 World Championships in Athletics was held at the Olympic Stadium on 16, 17 and 19 August. The winning margin was 2.45 seconds which as of 2024 is the greatest winning margin in the women's 800 metres at these championships and the only time this event has been won by more than two seconds at these championships.
The men's 200 metres at the 2005 World Championships in Athletics was held at the Helsinki Olympic Stadium on August 9, 10 and 11 August. The winning margin was 0.16 seconds.
The men's 400 metres hurdles event at the 2005 World Championships in Athletics was held at the Helsinki Olympic Stadium on August 6, 7 and 9.
The women's 1500 metres at the 2005 World Championships in Athletics was held on August 12 and 14 at the Helsinki Olympic Stadium. The winning margin was 1.11 seconds.
Keely Nicole Hodgkinson is an English middle-distance runner. She won the gold medal in the 800 metres at the 2024 Paris Olympics.
Selenogallates are chemical compounds which contain anionic units of selenium connected to gallium. They can be considered as gallates where selenium substitutes for oxygen. Similar compounds include the thiogallates and selenostannates. They are in the category of chalcogenotrielates or more broadly chalcogenometallates.
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