Tetra JSC

Tetra, JSC (Ukrainian: ЗАТ «Тетра») is a Ukrainian company, manufacturer of devices and equipment for searching and measuring of ionizing radiations. The company was founded in 1995. Head office and manufacturing facilities are based in Zhovti Vody. Tetra is a brand registered in Ukraine.

Technological opportunities

Designing, developing and manufacturing of dosimeter, radiometer and spectrometer apparatus and devices, automated control systems for monitoring radiation situation in the objects and areas; tooling; mechanical development; regulation; calibrating; testing; developing of specialized software.

Main activities

Development and production

Lunar regolith simulant

A lunar regolith simulant is a terrestrial material synthesized in order to approximate the chemical, mechanical, and engineering properties of, and the mineralogy and particle size distributions of, lunar regolith. Lunar regolith simulants are used by researchers who wish to research the materials handling, excavation, transportation, and uses of lunar regolith. Samples of actual lunar regolith are too scarce, and too small, for such research.

MLS-1

MLS-1 (Minnesota Lunar Simulant 1) is a lunar simulant that was developed at the University of Minnesota. The basaltic rock used in this simulant was mined from a quarry in Duluth, Minnesota. It contains plagioclase, olivine, pyroxene and ilmenite as some of its major minerals. The minerals and grain sizes resemble the chemistry of the Apollo 11 mare material (specifically soil sample 10084).

JSC-1

JSC-1 (Johnson Space Center Number One) is a lunar regolith simulant that was developed in 1994 under the auspices of NASA and the Johnson Space Center. Its developers intended it to approximate the lunar soil of the maria. Unlike MLS-1, it simulates a soil that is poor in titanium. It is a basaltic ash with a high glass content.

JSC

JSC may refer to:

Tetra

A tetra is one of several species of small freshwater fish from Africa, Central America and South America belonging to the biological family Characidae and to its former subfamilies Alestidae (the "African tetras") and Lebiasinidae. The Characidae are distinguished from other fish by the presence of a small adipose fin between the dorsal and caudal fins. Many of these, such as the neon tetra (Paracheirodon innesi), are brightly colored and easy to keep in captivity. Consequently, they are extremely popular for home aquaria.

Tetra is no longer a taxonomic, phylogenetic term. It is short for Tetragonopterus, a genus name formerly applied to many of these fish, which is Greek for "square-finned" (literally, four-sided-wing).

Because of the popularity of tetras in the fishkeeping hobby, many unrelated fish are commonly known as tetras, including species from different families. Even vastly different fish may be called tetras. For example, payara (Hydrolycus scomberoides) is occasionally known as the "sabretooth tetra" or "vampire tetra".

Princess Zelda

Princess Zelda (Japanese: ゼルダ姫, Hepburn: Zeruda-Hime) is the name of a fictional character in Nintendo's The Legend of Zelda video game series, who was introduced in its original entry in 1986. The name has applied to many female members of Hyrule's royal family, which includes several distinct characters in Hyrule legend.

Though she is the eponymous character, her story role is often that of donor or damsel in distress. The player instead controls Link, the series' central protagonist, and usually focuses on defeating Ganon (or Ganondorf), the series' main antagonist. Many Zelda games adopt the classic princess-and-dragon premise of chivalric literature: Zelda is usually kidnapped or imprisoned by Ganon, prompting Link to come to her rescue. Some games in the series have also emphasized Zelda's magical abilities and importance to the functioning of Hyrule, demonstrating that she is more than capable of taking care of herself. In several games, she is one of the Sages, whose work is essential to defeating Ganon; in others, she adopts alternative personae in order to take a more active role in her kingdom; and in some, she is a self-sacrificing princess regnant. Zelda's alter egos include the ninja Sheik in Ocarina of Time and the pirate Tetra in The Wind Waker and Phantom Hourglass.

Tetra (disambiguation)

Tetra is any of several species of freshwater fish in the family Characidae from Africa, Central America and South America.

Tetra may also refer to:

See also