Can urban e-commerce transformation improve economic resilience? a quasi-natural experiment from China.

The impact of urban e-commerce transformation on economic resilience can help a country improve its ability to resist risks and seize the initiative in economic development. This study examines the impact of the construction of the National E-commerce Demonstration City (NEDC) on economic resilience using the staggered different-in-differences approach using a sample of 282 Chinese cities from 2006 to 2020. The results show NEDC construction significantly strengthens urban economic resilience.

[Experimental and clinical studies on selective sacral rhizotomy in treatment of spastic bladder after spinal cord injury].

Objective: To observe the effect of selective sacral rhizotomy in treating spastic bladder after spinal cord injury and to explore the mechanism and the best surgical method of different sacral rhizotomies.

Methods: The spastic bladder models were established in 12 male dogs and were divided into 4 groups according to the different rhizotomies of the sacral nerve as the following: rhizotomy of the anterior root of S2 (group A), rhizotomy of the anterior root of S2 and half of the anterior root of S3 (group B), rhizotomy of the anterior roots of S2 and S3 (group C), and total rhizotomy of the nerve roots of S2-4 (group D). By urodynamic examination and electrophysiological observation, the changes of all functional data were recorded and compared between pre-rhizotomy and post-rhizotomy to testify the best surgical method.