2results about How to "Improve method" patented technology

The present application mainly relates to a kind of preparation of sulfur-rich amino acid protein CMd-copper nanoclusters and its detection mercury ion method, comprising: a) by prokaryotic expression obtains CMd protein, and the protein concentration of 5 mg / mL-25 mg / mL CMd protein solution is obtained by purification.b) CMd is reacted with reducing agent TCEP after opening protein disulfide bond.c) the protein solution after reduction is reacted with anhydrous copper sulfate, and preparation high fluorescence CMd-copper nanocluster.d) CMd-copper nanocluster is applied to detect heavy metal mercury ion.The application method can be synthesized under mild aqueous conditions by "one-step method" structure controllable, stable CMd-copper nanocluster, widens the raw material of copper nanocluster synthesized with protein as template, avoids the use of organic solvent and strong reducing agent, and reduces the cost and environmental burden brought by noble metal raw material, and also has higher selectivity to mercury ion.

The purpose of this invention is to suppress angular deviation at the shoulder of the segment coil and improve the insertion of the segment coil into the stator core. The stator of the electric motor of this invention comprises a stator core (12) having multiple armature slots (12a) and multiple segment coils (11) formed in a U-shape and inserted into the multiple armature slots (12a). Each segment coil (11) has a shoulder (11a) and a shoulder (11b) formed by bending to form a U-shape. When viewed from the front in the U-shape state, indentations (100a) are formed on the shoulder (11a) and shoulder (11b) in a front-rear direction, recessed from the surface of the shoulder (11a) and the surface of the shoulder (11b). Furthermore, indentations (100a) are also formed on the back of the shoulder (11a) and shoulder (11b).