not perfectly level parts, or parts with heavy burr must be mechanically preclamped (without force multiplication) until they are no longer resilient before the highpressure force is ap- plied. 25. Extra high or extra long workpieces must be secured with the aid...
Biologists were puzzled by the discovery of left-handed Z-DNA because it seemed unnecessary. Z-DNA was stabilized by the negative supercoiling generated by transcription, which indicated a transient localized conformational change. Few laboratories worke