Abstract:
A weight reduction re-profiling process after dynamic balance for a wheel set of a passenger train, comprising the following steps: designing a spindle end clamp and a tailstock end clamp according to structures of screw holes on an end of train axle; fixing the spindle end clamp to the train axle; hanging up the wheel set, aligning a center hole of the spindle end clamp with a top tip of a spindle end of a lathe, and inserting a handle portion of the spindle end clamp into a drive plate hole; aligning an eccentric hole of the tailstock end clamp with a scribed line on an end for weight reduction after dynamic balance by visual inspection, then sheathing the tailstock end clamp on the train axle, aligning a top tip of tailstock of the lathe with the eccentric hole of the tailstock end clamp, and tightening them; and so on.
Abstract:
An attenuated verotoxin comprising a verotoxin A subunit amino acid sequence in which at least one of the amino acids at positions 167 to 172 and positions 202 to 207 from the N terminus is mutated; an attenuated verotoxin A subunit thereof; a complex of the A subunit with a ligand; an anticancer agent using the verotoxin, A subunit or ligand; a method for treating cancer; a gene that encodes the attenuated verotoxin or its A subunit; a gene therapy agent using the gene; and a gene therapy method.