.mt

.mt is the Internet country code top-level domain (ccTLD) for Malta.

Second-level domains

Registrations are at the third level beneath these names:

References

External links

5-Methoxytryptamine

5-Methoxytryptamine (5-MT), also known as mexamine, is a tryptamine derivative closely related to the neurotransmitters serotonin and melatonin. 5-MT has been shown to occur naturally in the body in low levels. It is biosynthesized via the deacetylation of melatonin in the pineal gland.

5-MT acts as a full agonist at the 5-HT₁, 5-HT₂, 5-HT₄, 5-HT₆, and 5-HT₇ receptors. It has no affinity for the 5-HT₃ receptor and it should also be noted that its affinity for the 5-HT_1E receptor is very weak in comparison to the other 5-HT₁ receptors. Its affinity for the 5-HT_5A receptor is unknown.

See also

References

719 Albert

719 Albert is a Mars-crossing, Amor asteroid; it was the second one discovered after 433 Eros.

Discovery

Discovered in 1911 by Johann Palisa, the asteroid was named after one of the Imperial Observatory in Vienna's major benefactors, Albert Salomon von Rothschild, who had died some months before. Due to inaccuracies in the asteroid's computed orbit it was subsequently lost and not recovered until 2000 by Jeffrey Larsen using data from the Spacewatch asteroid survey project. When it was recovered in 2000, Albert was the last "lost asteroid" among those assigned numbers (69230 Hermes was not numbered until 2003). The second-to-last "lost" numbered asteroid, 878 Mildred, had been recovered in 1991.

When it was rediscovered, 719 Albert was mistakenly thought to be a new asteroid and was designated 2000 JW₈. Upon further investigation, however, it was noticed that its orbital plane matched up nicely with the last remaining "lost" asteroid and it was properly identified. Using the new observational data the period was determined to be about 4.28 years instead of the 4.1 years calculated in 1911; this was the primary reason the asteroid was lost.