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| 1 | Preoperative P-wave duration as a predictor of atrial fibrillation after coronary artery bypass grafting: A prospective cohort study with meta-analysis显示文摘Objectives:Reported prediction rules for postoperative atrial fibrillation(AF)have suffered from inconsistent results and controversy surrounding the predictive value of a preoperative P-wave duration(PreOPWD).This study examined PreOPWD as a predictor for AF after coronary artery bypass grafting(CABG).Methods:Two-hundred-and-ninety-nine patients with sinus rhythm before off-pump CABG were recruited into the study.Patients'demographic and clinical data were evaluated prospectively.Patients were continuously monitored for the first seven postoperative days.Multiple logistic regressionwas used to determine significant predictors of AF.Findings were then combined with similar studies and a metaanalysis was performed.Results:Postoperative AF was observed in 33.1%of 299 patients.Patients with AF were older,had a prolonged PreOPWD,higher incidences of hypertension,aortic regurgitation,and mitral regurgitation.A cut-off point of PreOPWD105ms achieved a specificity of 74%,and a sensitivity of 65%for predictive of AF.Multivariate analysis showed that PreOPWD105ms(odds ratio[OR]4.63,95%confidence intervals[CI]2.66 to 8.03,P<0.001),age60 years(OR 2.72,95%CI 1.51 to 4.90,P<0.01)and hypertension(OR 2.10,95%CI 1.08 to 4.07,P<0.05)independently predicted postoperative AF.A meta-analysis of this data combined with those of ten other studies showed that PreOPWD was greater in patients with POAF,with a weighted mean difference of 3.95 ms(95%CI 1.97 to 5.92,P<0.001).Conclusion:This study confirmed,among other predictive characteristics,that PreOPWD is a powerful independent predictor of POAF. | Fangqin Wu Ying Wu Wenyan Tao Haibo Zhao Dongyan Shen | 2018 | International Journal of Nursing Sciences2018，5，2： | 1 |
| 2 | Influence of Modified Medical Stone on Behavior of Sulfur during Pyrolysis of Longma Coal显示文摘The influence of Co Mo P/medical stone and SO_4^(2-)/medical stone on sulfur behavior during the Longma coal pyrolysis was investigated in a fixed bed reactor. Moreover, the kinetics was also studied. It is found that adding SO_4^(2-)/medical stone was favorable to removal of volatile matter, while adding Co Mo P/medical stone could inhibit the emission of volatiles. Moreover, the results also showed that adding Co Mo P/medical stone made the total sulfur retention higher, while adding SO_4^(2-)/medical stone made the total sulfur retention lower. Adding modified medical stone was beneficial to removal of sulfate sulfur and pyritic sulfur, while it was beneficial to retaining organic sulfur in the residue. Furthermore, adding Co Mo P/medical stone and SO_4^(2-)/medical stone all could increase the emission of H_2S when the temperature was higher than 450℃. Judging from the kinetics study, it also can be known that addition of the natural minerals could result in a decrease of the pre-exponential factor and also change the apparent activation energy upon comparing the apparent activation energy and the pre-exponential factor of raw Longma coal at 435—537℃. | Li Jingkuan Zhao Shuguang Wang Baofeng Jin Yan Zhang Jinjun Cheng Fangqin | 2017 | China Petroleum Processing & Petrochemical Technology2017，19，1： | 0 |
| 3 | Experimental investigation and cost assessment of the salt production by solar assisted evaporation of saturated brine显示文摘The technical feasibility and economy of solar heat collection-forced evaporation process are the keys to its practicality,especially its application in strong brine treatment.The operation cost of applying solar collection in salt manufacturing through depth evaporation of brine has been studied.For Na^+,K^+,Mg^(2+)//Cl^-,SO_4^(2-)-H_2O salt–water system,most of the Na Cl and all of the Carnallite were separated.The operation cost reached the optimum when the heat collection and evaporation were controlled at 75 and 55°C,respectively.When the solar radiation amount was 19557 kJ·m^(-2)·d^(-1),the solar collector area for producing Carnallite was about 34.27 m^2·(t salt)^(-1),and the operation cost was 13 USD?(t salt)^(-1).The energy consumption of salt manufacturing is at least 25%higher than that of natural evaporation.Regarding the economy,the solar assisted salt manufacturing process is recommended to be performed at a production scale of more than 20 tons per day. | Jing Zhao Huaigang Cheng Xiao Wang Wenting Cheng Fangqin Cheng | 2018 | Chinese Journal of Chemical Engineering2018，26，4： | 0 |
| 4 | miR-126-5p affects the chemosensitivity of colorectal cancer cells by regulating SPRED1, ERK1/2 pathway and apoptosis显示文摘Chemoresistance is still one of the main obstacles to treat colorectal cancer(CRC).Substantial studies on biomarkers related to chemoresistance have emerged in recent years.Many microRNAs(miRNA)have been reported to involved in drug resistance and CRC.1 MiR-126-5p participates in malignant behaviors of numerous cancers.2,3 However,it is not known if miR-126-5p participates in multidrug resistance in CRC.Especially,the impact of miR-126-5p on drug resistance of CRC and its drug resistance mechanism have not been reported. | Mingshi Xu Gang Zhang Xiaofan Gu Fangqin Zhao Zhongmin Yang Xiongwen Zhang | 2023 | Genes & Diseases2023，10，3： | 0 |
| 5 | Hybrid microbial electrolytic/UV system for highly efficient organic pollutants removal显示文摘This study for the first time proposed an efficient microbial electrolyte/UV system for Methyl Orange decomposition. With an external applied voltage of 0.2 V and cathode aeration of20 mL/min, H2O2 could be in-situ generated from two-electron reduction of oxygen in cathode, reaching to 8.1 mg/L in 2 hr and continued to increase. The pollutant removal efficiency of approximate 94.7% was achieved at initial neutral pH, with the activation of ·OH in the presence of UV illumination. Although the nature of its guiding principles remain on the vista of practical exploration, this proof-of-concept study provides an alternative operation pattern of solar–microbial hybrid technology for future wastewater treatment from a basic but multidisciplinary view. | Yingying You Shaobin Huang Xuesong Zhao Han Li Fangqin Cheng Jinhua Wu Yongqing Zhang Shaofeng Zhou | 2019 | Journal of Environmental Sciences2019，31，9： | 0 |
| 6 | Effect of aluminum on microstructure and magnetic properties of sintered Nd-Fe-B magnets processed by grain boundary diffusion of Tb-Al显示文摘The grain boundary diffusion process(GBDP)of Tb can improve the coercivity of sintered Nd-Fe-B magnets.In this study,the effect of AI on the diffusion of Tb in the GBDP was investigated.The content of diffused Tb-Al was precisely controlled by adjusting the magnetron sputtering process.The Tb equivalent of Al was also studied.Results show that AI promotes the diffusion of Tb deeper into the magnet,reducing the thickness of the shell in the core-shell structure.This study is helpful for further developing the process,reducing the consumption of heavy rare earth elements(Tb),and improving the coercivity of sintered Nd-Fe-B magnets. | Tinghui Wang Zhaokun Ma Qihang Zhu Lijing Yang Baosheng Liu Yu Zhao Cheng Xu Bizhang Zheng Fangqin Hu Jianzhong Li Qingfang Huang Zhenlun Song | 2023 | Journal of Rare Earths2023，41，5： | 0 |
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