Objective:To systematically evaluate the safety and efficacy of acupuncture on patients with postherpetic neuralgia.Methods:Based on the heyword retrieval method,China National Knowledge Infrastructure(CNKI,1978-2020)...Objective:To systematically evaluate the safety and efficacy of acupuncture on patients with postherpetic neuralgia.Methods:Based on the heyword retrieval method,China National Knowledge Infrastructure(CNKI,1978-2020),China Biomedical Literature database(CBM,1979-2020),VIP database(WEIPU,1989-2020),Wanfang database(1989-2020),Cochrane Library,PubMed,and Embase were searched;randomized controlled trials of the use of acupuncture in the treatment of postherpetic neuralgia were screened out;the quality of the included literatures was evaluated based on the evaluation criteria in the Cochrane Handbook,and meta-analysis was performed using RevMan 5.3.Results:Twenty-six literatures that met the criteria,involving 2,174 patients,were included;the meta-analysis showed that compared with western medicine,the use of acupuncture can improve the overall effective rate(RR=1.24,95%CI[1.17,1.32],P<0.00001)and reduce the VAS score(MD=-1.43,95%CI[-1.97,-0.89],P<0.00001).Conclusion:The use of acupuncture can further improve the clinical effect of patients with postherpetic neuralgia.展开更多
“Yang promotes Qi transformation and Yin promotes forming”maintains the normal progress of human life activities,which is an important embodiment of human vitality.The dysfunction of“Yang promotes Qi transformation...“Yang promotes Qi transformation and Yin promotes forming”maintains the normal progress of human life activities,which is an important embodiment of human vitality.The dysfunction of“Yang promotes Qi transformation and Yin promotes forming”leads to the coagulation of pathological products such as phlegm and blood stasis in the breast meridian,resulting in the occurrence of acne mastitis.In clinical treatment,we should take“warm Yang to promote Qi transformation”as the treatment principle,and add or subtract according to the specific situation.展开更多
Based on daily visibility data obtained from 1980-2002 and air pollution index data from 2001-2004 in Xi＇an, long-term variations and relationships for daily horizontal extinction coefficient and mass concentration o...Based on daily visibility data obtained from 1980-2002 and air pollution index data from 2001-2004 in Xi＇an, long-term variations and relationships for daily horizontal extinction coefficient and mass concentration of PM10 have been evaluated. A decreasing trend was found in horizontal extinction coefficient during the past 23 years, with higher values observed in 1980s relative to 1990s, and the highest and lowest values in winter and summer, respectively. Significant correlation and similar seasonal variations existed between horizontal extinction coefficient and PM10 concentration, suggesting the high influence of PM10 to the visibility drop at a site in the Guanzhong Plain of central China during the past two decades.展开更多
Existing valveless piezoelectric pumps are mostly based on the flow resistance mechanism to generate unidirectional fluid pumping,resulting in inefficient energy conversion because the majority of mechanical energy is...Existing valveless piezoelectric pumps are mostly based on the flow resistance mechanism to generate unidirectional fluid pumping,resulting in inefficient energy conversion because the majority of mechanical energy is consumed in terms of parasitic loss.In this paper,a novel tube structure composed of a Y-shaped tube and aȹ-shaped tube was proposed considering theory of jet inertia and vortex dissipation for the first time to improve energy efficiency.After verifying its feasibility through the flow field simulation,the proposed tubes were integrated into a piezo-driven chamber,and a novel valveless piezoelectric pump with the function of rectification(NVPPFR)was reported.Unlike previous pumps,the reported pump directed the reflux fluid to another flow channel different from the pumping fluid,thus improving pumping efficiency.Then,mathematical modeling was established,including the kinetic analysis of vibrator,flow loss analysis of fluid,and pumping efficiency.Eventually,experiments were designed,and results showed that NVPPFR had the function of rectification and net pumping effect.The maximum flow rate reached 6.89 mL/min,and the pumping efficiency was up to 27%.The development of NVPPFR compensated for the inefficiency of traditional valveless piezoelectric pumps,broadening the application prospect in biomedicine and biology fields.展开更多
文摘Objective:To systematically evaluate the safety and efficacy of acupuncture on patients with postherpetic neuralgia.Methods:Based on the heyword retrieval method,China National Knowledge Infrastructure(CNKI,1978-2020),China Biomedical Literature database(CBM,1979-2020),VIP database(WEIPU,1989-2020),Wanfang database(1989-2020),Cochrane Library,PubMed,and Embase were searched;randomized controlled trials of the use of acupuncture in the treatment of postherpetic neuralgia were screened out;the quality of the included literatures was evaluated based on the evaluation criteria in the Cochrane Handbook,and meta-analysis was performed using RevMan 5.3.Results:Twenty-six literatures that met the criteria,involving 2,174 patients,were included;the meta-analysis showed that compared with western medicine,the use of acupuncture can improve the overall effective rate(RR=1.24,95%CI[1.17,1.32],P<0.00001)and reduce the VAS score(MD=-1.43,95%CI[-1.97,-0.89],P<0.00001).Conclusion:The use of acupuncture can further improve the clinical effect of patients with postherpetic neuralgia.
文摘“Yang promotes Qi transformation and Yin promotes forming”maintains the normal progress of human life activities,which is an important embodiment of human vitality.The dysfunction of“Yang promotes Qi transformation and Yin promotes forming”leads to the coagulation of pathological products such as phlegm and blood stasis in the breast meridian,resulting in the occurrence of acne mastitis.In clinical treatment,we should take“warm Yang to promote Qi transformation”as the treatment principle,and add or subtract according to the specific situation.
基金the Key Research Foundation of Education Bureau of Sichuan Province(Grant No.17zd1122)the Natural Science Foundation of Southwest University of Science and Technology(Grant No.19zx7168)+2 种基金the Shock and Vibration of Engineering Materials and Struc-tures Key Laboratory of Sichuan Province(Grant No.I9kfgk07)the Sci-ence and Technology Department of Sichuan Province(Grant No.2021 YJ0525)National Natural Science Foundation of China(Grant No.11802255).
文摘Based on daily visibility data obtained from 1980-2002 and air pollution index data from 2001-2004 in Xi＇an, long-term variations and relationships for daily horizontal extinction coefficient and mass concentration of PM10 have been evaluated. A decreasing trend was found in horizontal extinction coefficient during the past 23 years, with higher values observed in 1980s relative to 1990s, and the highest and lowest values in winter and summer, respectively. Significant correlation and similar seasonal variations existed between horizontal extinction coefficient and PM10 concentration, suggesting the high influence of PM10 to the visibility drop at a site in the Guanzhong Plain of central China during the past two decades.
基金This work was financially supported by Guangdong Basic and Applied Basic Research Foundation,China(Grant No.2019B1515120017)Regional Joint Youth Fund Project of Guangdong Basic and Applied Basic Research,China(Grant No.2020A1515110619)Guangzhou Science and Technology Plan Project,China(Grant No.202002030356).
文摘Existing valveless piezoelectric pumps are mostly based on the flow resistance mechanism to generate unidirectional fluid pumping,resulting in inefficient energy conversion because the majority of mechanical energy is consumed in terms of parasitic loss.In this paper,a novel tube structure composed of a Y-shaped tube and aȹ-shaped tube was proposed considering theory of jet inertia and vortex dissipation for the first time to improve energy efficiency.After verifying its feasibility through the flow field simulation,the proposed tubes were integrated into a piezo-driven chamber,and a novel valveless piezoelectric pump with the function of rectification(NVPPFR)was reported.Unlike previous pumps,the reported pump directed the reflux fluid to another flow channel different from the pumping fluid,thus improving pumping efficiency.Then,mathematical modeling was established,including the kinetic analysis of vibrator,flow loss analysis of fluid,and pumping efficiency.Eventually,experiments were designed,and results showed that NVPPFR had the function of rectification and net pumping effect.The maximum flow rate reached 6.89 mL/min,and the pumping efficiency was up to 27%.The development of NVPPFR compensated for the inefficiency of traditional valveless piezoelectric pumps,broadening the application prospect in biomedicine and biology fields.
