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Concrete is the most used construction material in the whole world. More than that, behind water, it’s the most used material, all categories combined. Worldwide, about 10 billion tons of concrete are ...
In order to perceive the state of the process of reverse thinning spinning of the ultra-thin wall tube, a monitoring method based on drum shape is proposed. The method uses the non-uniform rational ...
ZURICH — A new method of correcting astigmatism, named the “cross-cylinder” technique by its developers, Paolo Vinciguerra, MD, and Daniel Epstein, MD, treats both principal meridians, correcting half ...