First developed by the United States in the early 1950s, the hydrogen or thermonuclear bomb is perhaps a thousand times more powerful than a uranium-or plutonium-based fission bomb, making it effectively the nuclear weapon's nuclear weapon.n a fusion reaction, two atoms of the lightest element, hydrogen, fuse to create one atom of helium, the next-lightest element â and release much more energy.
Clival tumors were found to enhance intensely. A clivus of very low signal intensity (signal void) on T1- or T2-weighted images was always abnormal. The clivus with marrow reconversion was uniformly hypointense relative to the pons on T1-weighted images and isointense relative to normal marrow on T2-weighted images.
BPPV is a condition of the inner ear. It is a common cause of intense dizziness (vertigo), especially in older people. Benign means that it is due neither to a cancerous nor a serious cause. Paroxysmal means recurring sudden episodes of symptoms. Positional means that the symptoms are triggered by certain positions. In the case of BPPV, it is certain positions of the head that trigger symptoms.