Development of VME system in RPC electronics for reactor neutrino experiment at Daya Bay Nuclear Power Plant

VME system of the Resistive Plate Chamber (RPC) electronics for the Daya Bay Reactor Neutrino Experiment is described in this paper. A 9U VME RPC trigger module (RTM) is designed to process coincidence signals coming from front end cards (FECs), to generate local triggers and send them to FECs to select the hit data from RPC detector, to report trigger information to a master trigger system and receive cross triggers from the master trigger system. Another 9U VME readout module is designed to collect data from all FECs, to send out configurations to FECs, and to transmit collected hit data to the data acquisition system via VME bus. Test results prove that the VME system is capable of treating a maximum data rate (2.2 MB·s-1 ), without data loss.

Study on the Tort Liability of Electronic Commerce Platform

Today,the rapid development of electronic commerce(E-commerce)has added a new driving force for China’s economic development.However,all kinds of legal problems have followed,such as uncontrolled production and sale of fake goods,frequent malicious complaints,endless unfair competition,and illegal infringement,which have harmed the legitimate interests of consumers and seriously damaged the market order and fair competition.In order to provide some theoretical and realistic reference for the development of China’s E-commerce industry,this paper focuses on the relevant problems in the field of“infringement”of E-commerce platforms for in-depth thinking,and puts forward suggestions for solving the existing problems based on the development status of E-commerce platforms.

Effectiveness and safety of electroacupuncture for the treatment of pain after laparoscopic surgery: a systematic review

OBJECTIVE:To evaluate the clinical effectiveness and safety of electroacupuncture for treating pain after laparoscopic surgery.METHODS:The following databases were searched(since their establishment until November 16,2021)for randomized controlled trials(RCTs)on electroacupuncture for pain after laparoscopic surgery:Pub Med,Embase,the Cochrane Library,Web of Science,China National Knowledge Infrastructure Database,Wanfang Database,China Science and Technology Journal Database,and Chinese Biomedical Literature Database.Data were screened independently and extracted by two reviewers.Two researchers independently extracted and cross-checked data and applied the modified Jadad scale and the Cochrane-recommended assessment method to evaluate the bias risk.The Meta-analysis was conducted using Rev Man5.3 software.RESULTS:Twelve RCTs enrolling 788 patients were included.(a)For postoperative 24 h visual analogue scale,five trials were included on electroacupuncture+routine analgesia therapy vs routine analgesia therapy with significance in electroacupuncture conducted after surgery[mean difference(MD)=-0.63,95%confidence interval(CI)(-0.90,-0.37)],as well as in electroacupuncture conducted before and after surgery[MD=-1.01,95%CI(-1.62,-0.41)]and in surgery.However,two trials were included in electroacupuncture conducted 24 h before surgery with no significant difference[MD=-0.16,95%CI(-0.44,0.12)].(b)The anesthetics intake of electroacupuncture+routine analgesia therapy vs.routine analgesia therapy was significant[MD=-121.71,95%CI(-164.92,-78.49)].(c)The adverse effects of electroacupuncture+routine analgesia therapy vs.routine analgesia therapy were significant both in the incidence of postoperative nausea and vomiting[risk rate(RR)=0.49,95%CI(0.39,0.61)]and postoperative dizziness and headache[RR=0.14,95%CI(0.04,0.47)].CONCLUSION:The evidence showed that electroacupuncture combined with routine analgesia therapy effectively treated pain after laparoscopic surgery.However,more rigorously designed RCTs are required due to the low quality of the included studies and the incomplete outcome evaluation system.