目的探讨妊娠期糖尿病(GDM)患者血清糖化血红蛋白A1c(HbA1c)、Alarin及纤维凝胶蛋白-3(Ficolin-3)联合对不良妊娠结局的预测价值。方法选取入院产检并住院分娩的129例GDM患者为GDM组,选取同期于本院产检并分娩的133例糖耐量试验结果正...目的探讨妊娠期糖尿病(GDM)患者血清糖化血红蛋白A1c(HbA1c)、Alarin及纤维凝胶蛋白-3(Ficolin-3)联合对不良妊娠结局的预测价值。方法选取入院产检并住院分娩的129例GDM患者为GDM组,选取同期于本院产检并分娩的133例糖耐量试验结果正常孕妇作为对照组。采用全自动糖化血红蛋白分析仪检测血清HbA1c水平;酶联免疫吸附试验检测血清Alarin和Ficolin-3水平;Pearson法分析GDM患者血清HbA1c、Alarin、Ficolin-3水平与餐后2 h血糖(2 h PG)、空腹血糖(FBG)、胰岛素抵抗指数(HOMA-IR)的相关性;Logistic回归分析HbA1c、Alarin、Ficolin-3水平与GDM患者发生不良妊娠结局的关系;绘制受试者工作特征(ROC)曲线,分析血清HbA1c、Alarin、Ficolin-3水平对GDM患者发生不良妊娠结局的预测价值。结果GDM组2 h PG、FBG、HOMA-IR及血清HbA1c、Alarin、Ficolin-3水平均高于对照组(P<0.05)。GDM患者血清HbA1c、Alarin、Ficolin-3水平与2 h PG、FBG、HOMAIR均呈正相关(P<0.05)。血糖控制差的GDM患者血清HbA1c、Alarin、Ficolin-3水平均高于血糖控制好的GDM患者(P<0.05)。不良妊娠结局的GDM患者上述三指标水平均高于无不良妊娠结局GDM患者(P<0.05)。HbA1c、Alarin、Ficolin-3水平升高均是GDM患者发生不良妊娠结局的独立危险因素(P<0.05)。HbA1c、Alarin、Ficolin-3单独及联合预测GDM患者发生不良妊娠结局的曲线下面积分别为0.840、0.865、0.815和0.979。结论GDM患者血清HbA1c、Alarin、Ficolin-3水平异常升高,三者联合检测可提高不良妊娠结局的预测价值。展开更多
[目的]随着新能源的大规模应用,新能源发电并网面临的挑战不断突显,储能系统的重要性日益上升。二氧化碳储能(Carbon Dioxide Energy Storage,CES)技术是近年来兴起的一种压缩气体储能技术,具有储能密度大、寿命长、系统设计灵活等优势...[目的]随着新能源的大规模应用,新能源发电并网面临的挑战不断突显,储能系统的重要性日益上升。二氧化碳储能(Carbon Dioxide Energy Storage,CES)技术是近年来兴起的一种压缩气体储能技术,具有储能密度大、寿命长、系统设计灵活等优势。其中液态二氧化碳储能(Liquid Carbon Dioxide Energy Storage,LCES)技术在系统高压侧和低压侧均采用液相存储二氧化碳,储能密度高、运行稳定性强。[方法]文章首先介绍了LCES系统的运行原理和关键技术指标,指出二氧化碳液化的重要性和常见工艺。然后介绍了针对LCES系统低压侧CO_(2)液化的研究现状,包括采用混合储能工质、自冷凝、利用LNG冷能、采用蓄冷器,详细分析了各种方式的特点。[结果]研究表明,采用蓄冷器是最具优势的方式。进一步分析蓄冷液化面临的技术挑战及发展前景具有必要性。[结论]研究为LCES系统CO_(2)液化技术的进一步发展提供了指导。展开更多
A highly stable zinc metal anode modified with a fluorinated graphite nanosheets(FGNSs)coating was designed.The porous structure of the coating layer effectively hinders lateral mass transfer of Zn ions and suppresses...A highly stable zinc metal anode modified with a fluorinated graphite nanosheets(FGNSs)coating was designed.The porous structure of the coating layer effectively hinders lateral mass transfer of Zn ions and suppresses dendrite growth.Moreover,the high electronegativity exhibited by fluorine atoms creates an almost superhydrophobic solid-liquid interface,thereby reducing the interaction between solvent water and the zinc substrate.Consequently,this leads to a significant inhibition of hydrogen evolution corrosion and other side reactions.The modified anode demonstrates exceptional cycling stability,as symmetric cells exhibit sustained cycling for over 1400 h at a current density of 5 mA/cm^(2).Moreover,the full cells with NH_(4)V_(4)O_(10)cathode exhibit an impressive capacity retention rate of 92.2%after undergoing 1000 cycles.展开更多
文摘目的探讨妊娠期糖尿病(GDM)患者血清糖化血红蛋白A1c(HbA1c)、Alarin及纤维凝胶蛋白-3(Ficolin-3)联合对不良妊娠结局的预测价值。方法选取入院产检并住院分娩的129例GDM患者为GDM组,选取同期于本院产检并分娩的133例糖耐量试验结果正常孕妇作为对照组。采用全自动糖化血红蛋白分析仪检测血清HbA1c水平;酶联免疫吸附试验检测血清Alarin和Ficolin-3水平;Pearson法分析GDM患者血清HbA1c、Alarin、Ficolin-3水平与餐后2 h血糖(2 h PG)、空腹血糖(FBG)、胰岛素抵抗指数(HOMA-IR)的相关性;Logistic回归分析HbA1c、Alarin、Ficolin-3水平与GDM患者发生不良妊娠结局的关系;绘制受试者工作特征(ROC)曲线,分析血清HbA1c、Alarin、Ficolin-3水平对GDM患者发生不良妊娠结局的预测价值。结果GDM组2 h PG、FBG、HOMA-IR及血清HbA1c、Alarin、Ficolin-3水平均高于对照组(P<0.05)。GDM患者血清HbA1c、Alarin、Ficolin-3水平与2 h PG、FBG、HOMAIR均呈正相关(P<0.05)。血糖控制差的GDM患者血清HbA1c、Alarin、Ficolin-3水平均高于血糖控制好的GDM患者(P<0.05)。不良妊娠结局的GDM患者上述三指标水平均高于无不良妊娠结局GDM患者(P<0.05)。HbA1c、Alarin、Ficolin-3水平升高均是GDM患者发生不良妊娠结局的独立危险因素(P<0.05)。HbA1c、Alarin、Ficolin-3单独及联合预测GDM患者发生不良妊娠结局的曲线下面积分别为0.840、0.865、0.815和0.979。结论GDM患者血清HbA1c、Alarin、Ficolin-3水平异常升高,三者联合检测可提高不良妊娠结局的预测价值。
文摘[目的]随着新能源的大规模应用,新能源发电并网面临的挑战不断突显,储能系统的重要性日益上升。二氧化碳储能(Carbon Dioxide Energy Storage,CES)技术是近年来兴起的一种压缩气体储能技术,具有储能密度大、寿命长、系统设计灵活等优势。其中液态二氧化碳储能(Liquid Carbon Dioxide Energy Storage,LCES)技术在系统高压侧和低压侧均采用液相存储二氧化碳,储能密度高、运行稳定性强。[方法]文章首先介绍了LCES系统的运行原理和关键技术指标,指出二氧化碳液化的重要性和常见工艺。然后介绍了针对LCES系统低压侧CO_(2)液化的研究现状,包括采用混合储能工质、自冷凝、利用LNG冷能、采用蓄冷器,详细分析了各种方式的特点。[结果]研究表明,采用蓄冷器是最具优势的方式。进一步分析蓄冷液化面临的技术挑战及发展前景具有必要性。[结论]研究为LCES系统CO_(2)液化技术的进一步发展提供了指导。
基金supported by Young Elite Scientists Sponsorship Program by CAST,China(No.2023QNRC001)the Science and Technology Innovation Program of Hunan Province,China(No.2022RC1078)+1 种基金the Natural Science Foundation of Hunan Province,China(No.2023JJ10060)the Scientific Research Fund of Hunan Provincial Education Department,China(No.23A0003)。
文摘A highly stable zinc metal anode modified with a fluorinated graphite nanosheets(FGNSs)coating was designed.The porous structure of the coating layer effectively hinders lateral mass transfer of Zn ions and suppresses dendrite growth.Moreover,the high electronegativity exhibited by fluorine atoms creates an almost superhydrophobic solid-liquid interface,thereby reducing the interaction between solvent water and the zinc substrate.Consequently,this leads to a significant inhibition of hydrogen evolution corrosion and other side reactions.The modified anode demonstrates exceptional cycling stability,as symmetric cells exhibit sustained cycling for over 1400 h at a current density of 5 mA/cm^(2).Moreover,the full cells with NH_(4)V_(4)O_(10)cathode exhibit an impressive capacity retention rate of 92.2%after undergoing 1000 cycles.