ROLE OF PROTON BEAM THERAPY IN SPINAL CHORDOMAS: A NARRATIVE REVIEW OF THE LITERATURE



Micro Aspheric Convex Lenses Fabricated by Precise Scraping

An easy, fast, inexpensive, and simple method utilizing a microshaper with a very small knife nose is used to fabricate microconvex aspherical lenses.The microshaper is mounted on a computer numerical control (CNC) machine.To achieve an accurately designed profile alphaville clothing of the lens surface, a cutter-path planning algorithm with compen

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