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The brand recommends leaving the stretcher in shoes for 24- to 48-hours, but I've found that using it for longer leads to better results. I tend to keep the stretchers stored in my boots when I'm ...
The Neil Robertson stretcher (NRS) is believed to have been influenced by a Japanese stretcher made from bamboo. The NRS was designed with the purpose of packaging casualties into a compact form, allowing for rescue operations in spaces with limited openings and facilitating movement through vertical escape hatches while minimizing slippage.
Top: positioning the scoop stretcher; middle: casualty lifting with five team members (one is pushing the normal stretcher); bottom: view from below) The scoop stretcher (or clamshell, Roberson orthopedic stretcher, or just scoop) is a device used specifically for moving injured people. It is ideal for carrying casualties with possible spinal ...
The Nimier stretcher (brancard Nimier) was a type of stretcher used by the French army during World War I. The casualty was placed on their back, but in a "seated position", (that is, the thighs were perpendicular to the abdomen). Thus, the stretcher was shorter and could turn in the trenches. This type of stretcher is rarely seen today.
The nilpotent elements of a commutative ring R form an ideal of R, called the nilradical of R; therefore a commutative ring is reduced if and only if its nilradical is zero. Moreover, a commutative ring is reduced if and only if the only element contained in all prime ideals is zero. A quotient ring R/I is reduced if and only if I is a radical ...