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The Advanced Combat Optical Gunsight (ACOG) is a series of prismatic telescopic sights manufactured by Trijicon. The ACOG was originally designed to be used on the M16 rifle and M4 carbine, but Trijicon has also developed ACOG accessories for other firearms. Models provide fixed-power magnification levels from 1.25× to 6×. [1]
The second disc replacement to achieve wide clinical use was the prodisc total disc replacement; it continues to have worldwide use today. Designed by French orthopedic spine surgeon Thiery Marnay, M.D., in the late 1980s, early implantations of the prodisc device began in 1990, with a 7-11 year follow-up published in 2005.
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1. a herniated disc when other non-surgical treatments have failed. The nucleus pulposus (the jelly-like center of the disc) of the herniated disc bulges out through the annulus (surrounding wall) and presses on the nerve root next to it. 2. degenerative disc disease (spondylosis). The disc consists of about 80% water.
Due to the design of the target chamber, the baseline design limited the maximum possible fusion energy release to 45 MJ, [29] equivalent to about 11 kg of TNT exploding. [30] When NIF was built and used in 2011, the fusion energy was far lower than expected – less than 1 kJ.
Fluorescence and confocal microscopes operating principle. Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. [1]
A tracer gun, sometimes known as a disc gun, is a kind of toy gun made of durable plastic. The toy shoots lightweight plastic discs roughly the size of a penny. Kids discovered it would also shoot U.S. pennies over a shorter distance. The discs used as ammunition for these guns are often sold with the label "Jet Discs."
But to ensure no disc capacity was wasted, a head had to transfer data at a maximum linear rate at all times too, without slowing on the outer rim of the disc. This led to optical drives—until recently—operating with a constant linear velocity (CLV). The spiral groove of the disc passed under its head at a constant speed. The implication of ...