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In 1950, the cleaning technology division was established with the development of the first European hot water high-pressure cleaner, the DS 350. [11] From the mid-1950s to the 1970s, the production of steam generators for industry and construction was a key focus for the company, while cleaning technology only later became Kärcher's main revenue-generating sector.
Five modern technetium-99m generators The first technetium-99m generator, unshielded, 1958. A Tc-99m pertechnetate solution is being eluted from Mo-99 molybdate bound to a chromatographic substrate A technetium-99m generator , or colloquially a technetium cow or moly cow , is a device used to extract the metastable isotope 99m Tc of technetium ...
Technetium-99m (Tc-99m) can be readily detected in the body by medical equipment because it emits 140.5 keV gamma rays (these are about the same wavelength as emitted by conventional X-ray diagnostic equipment), and its half-life for gamma emission is six hours (meaning 94% of it decays to 99 Tc in 24 hours). Besides, it emits virtually no beta ...
Before the development of tracers such as 99m Tc-MAG3, a range of other radiopharmaceuticals were employed. The test was first introduced in 1956, using iodine-131 diodrast . [ 25 ] [ 26 ] Later developments included iodine-131, and then iodine-123 , labelled ortho-Iodohippuric acid (OIH, marketed as Hippuran).
The metastable technetium-99m (99m Tc) is a short-lived (half-life about 6 hours) nuclear isomer used in nuclear medicine, produced from molybdenum-99. It decays by isomeric transition to technetium-99, a desirable characteristic, since the very long half-life and type of decay of technetium-99 imposes little further radiation burden on the body.
Carl Nicholas Karcher SMOM (January 16, 1917 – January 11, 2008) [1] was an American businessman who founded the Carl's Jr. hamburger chain, now owned by parent company Snow Star LP. Early life [ edit ]
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