How to download Abum video
It is very easy to download Abum video with TubeHunter Ultra. TubeHunter Ultra downloads video from 1097 Abum-like websites, and directly converts to other popular video formats like AVI, MPEG4, DivX, XviD, iPOD Video, iPhone format, MPEG, WMV, RM, MOV, Sony PSP, Zune Video, 3GP, 3G2, SWF, M4A, MP3, MP4, WAV, AAC and AC3.
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Actinium is a silvery radioactive metallic element. Due to its intense radioactivity, Actinium glows in the dark with an eerie blue light. It is found only in traces in uranium ores as 227-Ac, an a and ß emitter with a half-life of 21.773 years. One ton of uranium ore contains about a tenth of a gram of actinium.

It is about 150 times as radioactive as radium, making it valuable as a neutron source. Otherwise it has no significant industrial applications.

Actinium-225 is used in medicine to produce Bi-213 in a reusable generator or can be used alone as an agent for radio-immunotherapy.


Actinium was discovered in 1899 by André-Louis Debierne, a French chemist, who separated it from pitchblende. Friedrich Otto Giesel independently discovered actinium in 1902. The chemical behaviour of actinium is similar to that of the rare earth lanthanum.

The word actinium comes from the Greek aktis, aktinos, meaning beam or ray.


Actinium is found in trace amounts in uranium ore, but more commonly is made in milligram amounts by the neutron irradiation of 226-Ra in a nuclear reactor. Actinium metal has been prepared by the reduction of actinium fluoride with lithium vapor at about 1100 to 1300ºC.