Latest News for: yttrium(iii) oxide
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Yttrium oxide, also known as yttria, is Y2O3. It is an air-stable, white solid substance. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds.
It is the most important yttrium compound and is widely used to make Eu:YVO4 and Eu:Y2O3phosphors that give the red color in color TV picture tubes. Yttrium oxide is also used to make yttrium iron garnets, which are very effective microwave filters.
Y2O3 is used to make the high temperature superconductor YBa2Cu3O7, known as "1-2-3" to indicate the ratio of the metal constituents:
This synthesis is typically conducted at 800 °C.
The thermal conductivity of yttrium oxide is 27 W/(m·K).
Yttrium oxide is an important starting point for inorganic compounds. For organometallic chemistry it is converted to YCl3 in a reaction with concentrated hydrochloric acid and ammonium chloride.
Y2O3 is a prospective solid-state laser material. In particular, lasers with ytterbium as dopant allow the efficient operation both in continuous operation and in pulsed regimes. At high concentration of excitations (of order of 1%) and poor cooling, the quenching of emission at laser frequency and avalanche broadband emission takes place.
Year 3 (III) was a common year starting on Monday or Tuesday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Monday of the Proleptic Julian calendar. At the time it was known as the Year of the Consulship of Lamia and Servilius (or, less frequently, year 756 Ab urbe condita). The denomination 3 for this year has been used since the early medieval period when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Soulcalibur III (ソウルキャリバーIII, SōruKyaribā Surī) is a fighting game produced by Namco as a sequel to Soulcalibur II and the fourth installment in the Soul series. It was originally released exclusively for the PlayStation 2 in 2005. An improved arcade version, Soulcalibur III: Arcade Edition, was released in 2006.
The game includes new modes such as Tales of Souls, an interactive story-driven mode comparable to Edge Master Mode from Soul Edge; Character Creation, in which players can create custom characters from 13 total occupations, with multiple weapons and fighting styles; and Chronicles of the Sword, a real-time-play mode that allows players to take their created souls through adventures of their own. The game also has the largest character roster — 24 characters playable in Tales of Souls mode and an additional 18 playable in all other modes — and largest battle stage selection in Soul series history.
The Character Creation Mode allows the player to choose from several classes, clothing and armor, and physical features. Most of the classes can use up to five disciplines, three of which are unique, and two of which are "Soul of ..." disciplines: an exact replica of a main story character's moves. The created fighter's personality can be altered, which influences their quotes and their actions during battle. However, the personality is chosen by the equipment the character wears, and not directly by the player.
Comet Arend–Roland was discovered on November 8, 1956, by Belgian astronomers Sylvain Arend and Georges Roland on photographic plates. As the eighth comet found in 1956, it was named Arend–Roland 1956h after its discoverers. Because it was the third comet to pass through perihelion during 1957, it was then renamed 1957 III. Finally, it received the standard IAU designation C/1956 R1 (Arend–Roland), with the 'C/' indicating it was a non-periodic comet and the R1 showing it was the first comet reported as discovered in the half-month designated by R. The last is equivalent to the period September 1–15.
In November 1956, a double astrograph at the Uccle Observatory in Brussels was being used for routine investigation of minor planets. On November 8, 1956, the Belgian astronomers Sylvain Arend and Georges Roland discovered a comet on their photographic plates. At that time the comet was at visual magnitude 10, with a strong central condensation and a short tail. The early discovery of this comet allowed observing programs and equipment to be prepared well in advance.
