| 2 | Investigation of High-Stability Temperature Control in Primary Gas Thermometry显示文摘We presented a relationship between the temperature control and measurement stability limit and the temperature resolution,particularly for using rhodium-iron resistance thermometers and AC resistance bridges.Based on this,temperature control was investigated and demonstrated in primary gas thermometry under various working conditions.With optimized parameters,micro-Kelvin level temperature control stability was realized in the temperature region from 5 K to 24.5 K.The temperature control stabilities are better than 8μK over 180 h with an integration time of 33.6 s in the concerned temperature range,closing to the limit that the sensors and the instruments can control and measure.These stabilities were significantly improved about(44±8)%at 24.5 K and(70±7)%at 5 K comparing with our previous work(Chen et al.,Cryogenics,2019,97:1–6). | HU Jiangfeng ZHANG Haiyang SONG Yaonan PAN Changzhao GAO Bo LIU Wenjing HAN Dongxu ZHANG Zhen LUO Ercang PITRE Laurent | 2022 | Journal of Thermal Science2022，31，3： | 1 |
| 3 | Meta-analysis on Efficacy of Yiqi Huoxue Chinese Drugs in the Treatment of Coronary Heart Disease after Coronary Revascularization显示文摘[Objectives] To make a systematic evaluation on the therapeutic efficacy and safety of Yiqi Huoxue traditional Chinese drugs combined with western medicine in treatment of coronary heart disease( CHD) after coronary revascularization. [Methods] The literatures were retrieved from China Knowledge Infrastructure( CNKI),Chinese science and technology journal full-text database( VIP database,VIP),Wanfang Data,the Chinese biomedical Database,Pub Med,Embase,and the Cochrane Library. The retrieval time was set to the creation of the database to January 2017. The randomized controlled trial( RCT) was conducted on the comparison between Yiqi Huoxue Chinese drugs combined with western medicine and the western medicine alone in the treatment of CHD after coronary revascularization. The literature information was extracted and the methodological quality of the included literature was evaluated according to the bias risk assessment tool developed by the Cochrane Collaboration. Meta-analysis was performed with the aid of Rev Man 5. 3 software. Coronary artery restenosis rate,angina pectoris treatment efficiency,left ventricular ejection fraction( LVEF),left ventricular end-diastolic volume( LVEDV),B-type natriuretic peptide( BNP),6-minute walk test( 6 MWT),and adverse reactions were analyzed. [Results] A total of 29 articles were included,a total of2 518 patients,the literature quality was low. Meta-analysis results showed that compared with the treatment by western medicine alone,Yiqi Huoxue Chinese drugs combined with western medicine could further reduce coronary restenosis rate[RR = 0. 45,95% CI( 0. 34,0. 60),P <0. 000 01],improve the angina pectoris treatment efficiency[RR = 1. 13,95% CI( 1. 05,1. 21),P = 0. 000 5],raise LVEF[WMD = 4. 25,95% CI( 3. 46,5. 04),P < 0. 000 01],reduce LVEDV[WMD =-10. 41,95% CI(-17. 88,-2. 95),P = 0. 006],decrease the plasma BNP level[WMD =-32. 32,95% CI(-44. 92,-19. 72),P < 0. 000 01],and increase 6 MWT distance(WMD = 62. 25,95% CI( 21. 71,102. 78),P = 0. 003)[Conclusions]Yiqi Huoxue Chinese drugs combined with western medicine can alleviate the symptoms of angina pectoris,reduce the rate of coronary restenosis,improve heart function and improve exercise capacity,thereby improving clinical efficacy in patients with CHD after coronary revascularization. | Yaonan DU Chenwei SONG Areyi JIAERKEN Xiaofeng WANG | 2019 | Medicinal Plant2019，10，3： | 0 |
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