4,4'-Oxydianiline
4,4’-Oxydianiline is an organic compound with the formula O(C6H4NH2)2. It is an ether derivative of aniline. This colourless solid is a useful monomer and cross-linking agent for polymers, especially the polyimides, such as Kapton.
Uses
4,4’-Oxydianiline is used in the production of a wide variety of polymer resins. The primary use lies in the production of polyimide and poly(ester)imide resins. These resins are used for their temperature-resistant properties and are utilized in products including wire enamels, coatings, film, adhesives, insulating varnishes, coated fabrics, flame-retardant fibers, oil sealants and retainers, insulation for cables and printed circuits, and laminates and composite for aerospace vehicles.
Other applications of 4,4’-oxydianiline include the production of poly(amide)imide resins (which are used in the manufacture of heat-resistant wire enamels and coatings), as an intermediate in the manufacture of epoxy resins and adhesives, and in the production of aromatic polyether imides.
Demoxytocin
Demoxytocin (INN) (brand names Sandopart, Odeax, Sandopral), also known as desaminooxytocin or deaminooxytocin, as well as 1-(3-mercaptopropanoic acid)oxytocin ([Mpa1]OT), is an oxytocic peptide drug and synthetic analogue of oxytocin that is marketed in several European countries, including Italy, Czechoslovakia, and Poland. It has the amino acid sequence Mpa-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (Mpa = β-mercaptopropionic acid), and is an analogue of oxytocin wherein the leading cysteine is replaced with β-mercaptopropionic acid. Demoxytocin has similar activities as oxytocin, but is more potent and has a longer half-life in comparison. Unlike oxytocin, which is given via intravenous injection, demoxytocin is administered as a buccal tablet formulation. It is used to induce labor,promote lactation, and to prevent and treat puerperal (postpartum) mastitis (breast inflammation). The drug was first synthesized in 1960 and was introduced into clinical practice in 1971 by Sandoz.
See also
Heartbeat (company)
Heartbeat (sometimes Heart Beat) was a Japanese video game developer, famous for developing the sixth and seventh installments of the Dragon Quest series. Heartbeat also developed a remake of Dragon Quest IV. Plans to localize this remake in North America were halted when the employees of Heartbeat decided to take a sabbatical. The company stated its reason was "the raise of development costs", despite the massive financial success of its games. The company no longer exists but several of its members have created Genius Sonority, a company that develops games for Nintendo.
Games
Super NES
PlayStation
References
External links
Heartbeat (2PM song)
"Heartbeat" is a song by K-pop band 2PM. It was released on November 10, 2009, as the lead single for The First Album 01:59PM. The song peaked at No. 1 on the Gaon Chart.
Promotion
Six teaser videos, each featuring one of the band members, were released in the weeks leading up to the album's release on YouTube. The videos started with various close-up shots of the band members hooked up to medical equipment and speaking. The videos then pan to a heartbeat monitor, play a short clip of the song, and displays the text "What is your Heartbeating for?" Taecyeon's video mentioned the inclusion of seven members in the band, although the seventh member (Jaebeom) exited the group before release of "Heartbeat."
Release and chart performance
The song peaked at #1 on the Gaon Chart.
Music video
The song's music video was released on November 11, 2009, the day after the song's release. It features dark, moody visuals. The color palette is mostly blacks, greys, and whites. It is the band's first music video to exclude Jaebeom, who left the band a few months before the video's release.
Heartbeat (computing)
In computer science, a heartbeat is a periodic signal generated by hardware or software to indicate normal operation or to synchronize other parts of a system. Usually a heartbeat is sent between machines at a regular interval on the order of seconds. If a heartbeat isn't received for a time—usually a few heartbeat intervals—the machine that should have sent the heartbeat is assumed to have failed.
Heartbeat protocol
A heartbeat protocol is generally used to negotiate and monitor the availability of a resource, such as a floating IP address. Typically when a heartbeat starts on a machine, it will perform an election process with other machines on the heartbeat network to determine which machine, if any, owns the resource. On heartbeat networks of more than two machines, it is important to take into account partitioning, where two halves of the network could be functioning but not able to communicate with each other. In a situation such as this, it is important that the resource is only owned by one machine, not one machine in each partition.
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