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Carl Auer von Welsbach used a mixture of lanthanum oxide and zirconium oxide, which he called Actinophor and patented in 1886. The original mantles gave a green-tinted light and were not very successful, and his first company, which established a factory in Atzgersdorf in 1887, failed in 1889. [53] Modern uses of lanthanum include: LaB 6 hot ...
Lanthanum(III) oxide, also known as lanthana, chemical formula La 2 O 3, is an inorganic compound containing the rare earth element lanthanum and oxygen. It is used in some ferroelectric materials, as a component of optical materials, and is a feedstock for certain catalysts, among other uses.
5-year survival rate is measured from the time of diagnosis, it is not the same as Life expectancy. More aggressive screening methods will cause 5-year survival rate to increase because people are diagnosed earlier, this does not mean they live longer. This phenomenon is called Lead-Time Bias.
Lanthanum carbonate is used in medicine as a phosphate binder. [1] As a medication it is sold under the trade name Fosrenol by the pharmaceutical company Shire Pharmaceuticals. Due to its large size (1000 mg tablet is 2.2 cm in diameter), it may be possible to choke on the tablet if it is not chewed.
In Fluid Catalytic Cracking (FCC), lanthanum chloride enhances catalysts to convert heavy crude into valuable fuels like gasoline and diesel. [9] Also used in the field of geology as a very dilute solution, which when combined with the proper acids can help identify small >1% Strontium content in powdered rock samples.
Lanthanum(III) sulfide can be prepared from the effect of sulfur vapor on metallic lanthanum: 2 La + 3 S → La 2 S 3. It can also be prepared from the effect of hydrogen sulfide on lanthanum: 2 La + 3H 2 S → La 2 S 3 + 3 H 2. The effect of hydrogen sulfide on lanthanum oxide in the presence of reducing agents also produces lanthanum(III ...
Despite the importance Medicaid places on providing access to health care, many states have inconsistent policies toward paying for medications used to treat opiate addiction. The American Society of Addiction Medicine surveyed each state’s Medicaid program to determine which medications are covered and if any limitations exist.
Singapore generally has an efficient and widespread system of health care. It implements a universal health care system, and co-exists with private health care system. Infant mortality rate: in 2006 the crude birth rate stood at 10.1 per 1000, and the crude death rate was also one of the lowest in the world at 4.3 per 1000. In 2006, the total ...