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Harness High-Temperature Thermal Energy via Elastic Thermoelectric Aerogels

Nano-Micro Letters 2024年第8期16卷 196-210页

作者： Hongxiong Li Zhaofu Ding Quan Zhou Jun Chen Zhuoxin Liu Chunyu Du lirong liang Guangming Chen College of Materials Science and Engineering Shenzhen UniversityShenzhen 518055People’s Republic of China Department of Bioengineering University of CaliforniaLos AngelesCA 90095USA

Despite notable progress in thermoelectric(TE)materials and devices,developing TE aerogels with high-temperature resistance,superior TE performance and excellent elasticity to enable self-powered high-temperature monitoring/warning in industrial and wearable applications remains a great ***,a highly elastic,flame-retardant and high-temperature-resistant TE aerogel,made of poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate)/single-walled carbon nanotube(PEDOT:PSS/SWCNT)composites,has been fabricated,displaying attractive compression-induced power factor *** as-fabricated sensors with the aerogel can achieve accurately pressure stimuli detection and wide temperature range ***,a flexible TE generator is assembled,consisting of 25 aerogels connected in series,capable of delivering a maximum output power of 400μW when subjected to a temperature difference of 300 *** demonstrates its outstanding high-temperature heat harvesting capability and promising application prospects for real-time temperature monitoring on industrial high-temperature ***,the designed self-powered wearable sensing glove can realize precise wide-range temperature detection,high-temperature warning and accurate recognition of human hand *** aerogel-based intelligent wearable sensing system developed for firefighters demonstrates the desired self-powered and highly sensitive high-temperature fire warning *** from these desirable properties,the elastic and high-temperature-resistant aerogels present various promising applications including self-powered high-temperature monitoring,industrial overheat warning,waste heat energy recycling and even wearable healthcare.

关键词： Thermoelectrics Aerogel Self-powered High-temperature monitoring High-temperature warning

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Utilizing EMR Data for Smoking Behavior Surveillance in Hospitalized Patients With Chronic Respiratory Diseases and Its Impact on Clinical Outcomes—Beijing Municipality,China,2014–2023

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China CDC weekly 2024年第22期6卷 530-534页

作者： Jiachen Li Jian Su Zhaohui Tong lirong liang Department of Clinical Epidemiology Beijing Institute of Respiratory Medicine and Beijing Chao-Yang HospitalCapital Medical UniversityBeijingChina School of Economics Peking UniversityBeijingChina Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory Medicine and Beijing Chao-Yang HospitalCapital Medical UniversityBeijingChina

What is already known on this topic?Smoking is the primary risk factor for a poor prognosis in chronic respiratory disease(CRD).Current tobacco surveillance efforts in China focus on the general population and do not adequately cover CRD *** is added by this report?We employed electronic medical records(EMR)to track smoking habits in 28,334 hospitalized CRD patients at Beijing Chao-Yang *** rates of former and current smokers were 30.7%and 18.0%,*** former and current smokers exhibited an increased risk of respiratory symptoms and extended hospital *** are the implications for public health practice?These results underscore the importance of implementing smoking monitoring and targeted cessation interventions for hospitalized patients with CRDs.

关键词： respiratory prognosis smoke

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Ultrafast Response and Threshold Adjustable Intelligent Thermoelectric Systems for Next‑Generation Self‑Powered Remote IoT Fire Warning

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Nano-Micro Letters 2024年第11期16卷 413-428页

作者： Zhaofu Ding Gang Li Yejun Wang Chunyu Du Zhenqiang Ye lirong liang Long‑Cheng Tang Guangming Chen College of Materials Science and Engineering&College of Civil and Transportation Engineering Shenzhen UniversityShenzhen 518055People’s Republic of China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material Technology of MoEHangzhou Normal UniversityHangzhou 311121People’s Republic of China

Fire warning is vital to human life,economy and ***,the development of effective warning systems faces great challenges of fast response,adjustable threshold and remote ***,we propose an intelligent self-powered remote IoT fire warning system,by employing single-walled carbon nanotube/titanium carbide thermoelectric composite *** flexible films,prepared by a convenient solution mixing,display p-type characteristic with excellent high-temperature stability,flame retardancy and TE(power factor of 239.7±15.8μW m^(-1) K^(-2))*** comprehensive morphology and structural analyses shed light on the underlying *** the assembled TE devices(TEDs)exhibit fast fire warning with adjustable warning threshold voltages(1–10 mV).Excitingly,an ultrafast fire warning response time of~0.1 s at 1 mV threshold voltage is achieved,rivaling many state-of-the-art ***,TE fire warning systems reveal outstanding stability after 50 repeated cycles and desired durability even undergoing 180 days of air ***,a TED-based wireless intelligent fire warning system has been developed by coupling an amplifier,analogto-digital converter and Bluetooth *** combining TE characteristics,high-temperature stability and flame retardancy with wireless IoT signal transmission,TE-based hybrid system developed here is promising for next-generation self-powered remote IoT fire warning applications.

关键词： Thermoelectric Self-powered IoT fire warning Ultrafast response Threshold adjustable

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Self-assembled aerogel sheet electrodes of thermocells for low-grade heat harvest

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Science China Chemistry 2024年第5期67卷 1672-1679页

作者： Ziwei Mo Shouhao Wei Daibin Xie Kaihua Zhu Hongxiong Li Xin Lu lirong liang Chunyu Du Zhuoxin Liu Guangming Chen College of Materials Science and Engineering Shenzhen UniversityShenzhen 518055China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

Efficiently harvesting low-grade heat is crucial for sustainable energy management. Thermocells(TECs), inducing heat-toelectricity conversion via the thermogalvanic effect, have thus drawn tremendous attention in recent years. This study introduces a self-assembly approach for fabricating aerogel sheet electrodes(ASEs) tailored for TECs. The crafted ASEs retain a remarkable porous architecture with approximately 95% porosity, even with their slimmed-down thickness. Results reveal that the electrode composition has minimal influence on the thermopower of TECs. Notably, the porous ASE with tunned composition demonstrates an optimal effective surface area for the thermogalvanic effect, resulting in enhanced output current density. This balances the desirable traits of electrode compactness with abundant redox active sites, positioning it favorably against conventional bulky electrode designs. The TECs utilizing the optimized ASE achieve a peak output power of 22.10 μW cm^(-2)under a temperature difference of 30 K. Furthermore, a tubular TEC device is readily assembled and specially designed for harvesting heat energy from hot fluids. These findings underscore the potential of composite electrodes in the realm of low-grade heat harvest, paving the way for broader applications in sustainable energy solutions.

关键词： thermocells low-grade heat harvest energy conversion composite electrodes

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Comparative Effectiveness of Mobile Health-Based Comprehensive Smoking Cessation Modalities and Traditional Clinic-Delivered Treatments—Beijing Municipality,China,May 2022 to April 2024

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China CDC weekly 2024年第22期6卷 516-521页

作者： Shuilian Chu Hang Jing Di Zhang Yuan Cao Yunliang Qian Xiurong Liu Lin Xiao Zhaohui Tong lirong liang Department of Research on Tobacco Dependence Therapies Beijing Institute of Respiratory Medicine and Beijing Chao-Yang HospitalCapital Medical UniversityBeijingChina Beijing Center for Disease Prevention and Control BeijingChina Tobacco Control Office Chinese Center for Disease Control and PreventionBeijingChina Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory Medicine and Beijing Chao-Yang HospitalCapital Medical UniversityBeijingChina

What is already known about this topic?Most Chinese smokers have not accessed professional help due to a lack of sufficient smoking cessation *** health(mHealth)can mitigate obstacles related to time and transportation,thereby providing effective support for smokers seeking to *** is added by this report?This study offers real-world evidence supporting the effectiveness of mHealth-based comprehensive smoking cessation *** findings indicate that these modalities can significantly enhance abstinence rates,albeit to a lesser extent compared to traditional clinicbased *** to the intervention was identified as a critical factor influencing the effectiveness of smoking cessation *** are the implications for public health practice?The mHealth-based comprehensive smoking cessation modalities,with or without mailing cessation medications,present a promising approach to enhancing access to and utilization of smoking cessation *** strategy addresses the significant challenge of limited smoking cessation resources in China.

关键词： smoke Health thereby

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中医临床预测模型研究方法学质量的系统评价

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中国循证医学杂志 2024年第3期24卷 312-321页

作者：景城阳冯琳李嘉琛梁立荣廖星中国中医科学院中医临床基础医学研究所循证医学基础研究室北京100700 首都医科大学附属北京朝阳医院北京市呼吸疾病研究所临床流行病学研究室北京100020

目的系统评价中医临床预测模型研究的方法学质量。方法计算机检索PubMed、Embase、Web of Science、CNKI、WanFang Data、VIP和SinoMed数据库,搜集与中医临床预测模型研究相关的文献,检索时限均从建库至2023年3月31日。由2名研究者独立... 详细信息

目的系统评价中医临床预测模型研究的方法学质量。方法计算机检索PubMed、Embase、Web of Science、CNKI、WanFang Data、VIP和SinoMed数据库,搜集与中医临床预测模型研究相关的文献,检索时限均从建库至2023年3月31日。由2名研究者独立筛选文献和提取资料,并基于预测模型偏倚风险评估工具PROBAST评价纳入研究的偏倚风险。结果共纳入113项中医临床预测模型研究(79项诊断模型研究和34项预后模型研究),其中111项(98.2%)研究存在高偏倚风险,各有1项(0.9%)研究为低偏倚风险和偏倚风险不清。统计分析领域被评为高偏倚风险的比例最高,其次是研究对象领域。由于特定研究信息的报告普遍缺失,大量研究在预测因子和预测结局领域中的偏倚风险不清。结论现有中医临床预测模型研究的方法学质量普遍较差,几乎均存在高偏倚风险。产生偏倚风险的原因包括非前瞻性设计的数据来源、结局定义包含预测因子、建模样本量不足、特征选择不合理、性能评估欠准确和内部验证方法错误。未来建模研究需针对模型的设计、构建、评价和验证进行全方位的方法学质量改进,并全面报告模型的所有关键信息,以促进其在医疗实践中的转化应用。

关键词：临床预测模型预测模型研究方法学质量系统评价中医

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中医药领域预测模型研究的可视化分析

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中国实验方剂学杂志 2024年第14期30卷 209-217页

作者：景城阳戴泽琦吴雪张乐梁立荣廖星中国中医科学院中医临床基础医学研究所循证医学基础研究室北京100700 首都医科大学附属北京朝阳医院北京市呼吸疾病研究所北京100020

目的:基于知识图谱对中医药领域预测模型研究进行可视化分析,通过梳理发展历程、总结研究热点及动态趋势,为未来研究方向的挖掘和演化提供参考依据。方法:计算机检索中国知网数据库与Web of Science核心数据库,筛选在2023年2月28日前发... 详细信息

目的:基于知识图谱对中医药领域预测模型研究进行可视化分析,通过梳理发展历程、总结研究热点及动态趋势,为未来研究方向的挖掘和演化提供参考依据。方法:计算机检索中国知网数据库与Web of Science核心数据库,筛选在2023年2月28日前发表的中医药领域预测模型研究文献。采用Endnote X20软件进行文献管理,应用CiteSpace和VOSviewer软件生成知识图谱并对研究的发文量特征、机构合作关系、作者合作网络、共引情况、关键词进行可视化分析。结果:共纳入264篇中文文献和266篇英文文献,研究发文量总体上呈现逐年递增的趋势。发文机构间的合作关系呈现出明显的地域性,其中中医药院校与其附属医院、科研机构下属的二级单位之间的合作关系最为紧密。发表英文文献的研究团队数量及团队成员数量更多、且不同团队间的合作更为频繁。具有开创性意义和(或)借鉴作用的研究被广泛引用与参考;高被引文献主要发表于补充替代医学类期刊和药学类期刊。研究热点主要集中于中医临床预测模型、中药定量模型及具体建模方法。机器学习、深度学习等人工智能技术在中医药研究领域的应用将是未来最为前沿的研究方向。结论:中医药领域对预测模型研究的关注程度正日益增高,多机构、多团队的研究合作模式日趋成为主流。随着多学科交叉融合的不断发展,预测模型研究与新技术/方法的发展与兴起息息相关,任何在理论或应用层面的突破都会带动和引领新一轮的研究热潮。未来需针对特定主题的预测模型开展系统评价研究以提供循证依据。

关键词：中医药预测模型知识图谱可视化分析 CiteSpace VOSviewer

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Flexible nanocomposite electrodes with optimized hybrid structure for improved low-grade heat harvest via thermocells

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Science China Chemistry 2023年第6期66卷 1814-1823页

作者： Ziwei Mo Jiaqian Zhou Xin Lu lirong liang Fusheng Liu Zhuoxin Liu Guangming Chen College of Materials Science and Engineering Shenzhen UniversityShenzhen 518055China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

Thermal energy is ubiquitous and constantly generated in nature and ***(TECs)represent a promising energyconversion technology that can directly translate thermal energy into electricity with a large thermopower,thus having attracted considerable attention in recent ***,the use of noble platinum electrodes in TECs has substantially limited their widespread applications,as the scarcity of platinum element increases the cost of materials,and its intrinsic rigidity is not conducive to flexible and wearable applications under heat sources with complex surface ***,we propose a facile hybridizing route to constructing flexible electrodes with optimized *** flexible composite electrode is fabricated by decorating a single-walled carbon nanotube network with conducting polypyrrole nanospheres through controlled electrochemical *** refined interfacial nanostructures,the resultant composite film can facilitate carrier transport/transfer at the electrolyte-electrode interface,and thereby shows superior overall thermoelectrochemical performance to noble platinum *** TEC employing the flexible composite electrodes yields a maximum output power of 2.555μW under the temperature difference of 30 K,and a device comprising 6 TEC units is assembled to efficiently utilize waste heat and human body heat,revealing the high potential of low-grade heat harvesting.

关键词： nanocomposites thermocells carbon nanotubes polymers

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Regulating Thermogalvanic Effect and Mechanical Robustness via Redox Ions for Flexible Quasi‑Solid‑State Thermocells

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Nano-Micro Letters 2022年第5期14卷 153-167页

作者： Peng Peng Jiaqian Zhou lirong liang Xuan Huang Haicai Lv Zhuoxin Liu Guangming Chen College of Materials Science and Engineering Shenzhen UniversityShenzhen 518055People’s Republic of China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China

The design of power supply systems for wearable applications requires both flexibility and *** cells(TECs)with large Seebeck coefficient can efficiently convert lowgrade heat into electricity,thus having attracted considerable attention in recent *** hydrogel electrolyte essentially addresses the electrolyte leakage and complicated packaging issues existing in conventional liquid-based TECs,which well satisfies the need for ***,the concern of mechanical robustness to ensure stable energy output remains yet to be ***,a flexible quasisolid-state TEC is proposed based on the rational design of a hydrogel electrolyte,of which the thermogalvanic effect and mechanical robustness are simultaneously regulated via the multivalent ions of a redox *** introduced redox ions not only endow the hydrogel with excellent heat-to-electricity conversion capability,but also act as ionic crosslinks to afford a dual-crosslinked structure,resulting in reversible bonds for effective energy *** optimized TEC exhibits a high Seebeck coefficient of 1.43 mV K−1 and a significantly improved fracture toughness of 3555 J m^(−2),thereby can maintain a stable thermoelectrochemical performance against various harsh mechanical *** study reveals the high potential of the quasi-solid-state TEC as a flexible and durable energy supply system for wearable applications.

关键词： Thermocells Thermoelectric Flexible energy devices Wearable applications Hydrogel electrolytes

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妊娠期维生素A、D、E表达水平及其临床意义

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右江医学 2024年第1期52卷 64-67页

作者：蒙保山廖晗献梁丽荣林娜广西医大睿谷医学检验有限公司检验科广西南宁530021 广西南宁市妇幼保健院检验科广西南宁530021 广西医大开元埌东医院检验科广西南宁530021

目的探讨妊娠期维生素A、D、E的表达水平及其对不良妊娠结局的预测价值。方法回顾性分析2021年11月至2022年11月于广西医大开元琅东医院行产前检查并分娩的90例孕妇的临床资料。根据妊娠结局分为不良妊娠结局组(不良组,n=37)和正常妊娠... 详细信息

目的探讨妊娠期维生素A、D、E的表达水平及其对不良妊娠结局的预测价值。方法回顾性分析2021年11月至2022年11月于广西医大开元琅东医院行产前检查并分娩的90例孕妇的临床资料。根据妊娠结局分为不良妊娠结局组(不良组,n=37)和正常妊娠结局组(正常组,n=53)。收集妊娠期间相关临床资料,采用logistic回归分析影响不良妊娠结局的危险因素,采用受试者工作特征曲线(ROC)评价维生素A、D、E水平对不良妊娠结局的预测价值。结果Logistic回归分析显示高水平的维生素A、D、E是不良妊娠的保护因素(P<0.05);维生素A、D、E预测不良妊娠结局的AUC分别为0.691、0.797、0.784;三者联合预测妊娠不良结局的AUC为0.906,敏感度为81.08%,特异度为83.02%。结论维生素A、D、E联合使用在孕妇不良妊娠结局的预测中具有较高的指导价值,可为医护人员识别不良妊娠的风险人群提供参考。

关键词：妊娠期维生素A 维生素D 维生素E 妊娠结局

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