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Changes in global land surface frozen ground and freeze-thaw processes during 1950-2.2. based on ERA5-Land data

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Advances in Climate Change Research 2024年第2期15卷 265-274页

作者： Yong YANG Ren-Sheng CHEN Yong-Jian ding Hong-Yuan LI Zhang-Wen LIU Qilian Alpine Ecology and Hydrology Research Station Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 73000China State Key Laboratory of Cryospheric Sciences Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 73000China shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection College of Resources and EnvironmentLinyi UniversityLinyi 276000China

Frozen ground(FG)plays an important role in global and regional climates and environments through changes in land freeze-thaw processes,which have been conducted mainly in different ***,the changes in land surface freeze-thaw processes under climate change on a global scale are still *** on ERA5-Land hourly land skin temperature data,this study evaluated changes in the global FG area,global land surface first freeze date(FFD),last freeze date(LFD)and frost-free period(FFP)from 1950 to *** results show that the current FG areas(1991-2.2. mean)in the Northern Hemisphere(NH),Southern Hemisphere(SH),and globe are 68.50×10^(6),9.03×10^(6),and 77.53×10^(6)km^(2.,which account for 72.4%,2..8%,and 60.4%of the exposed land(excluding glaciers,ice sheets,and water bodies)in the NH,SH and the globe,respectively;further,relative to 1951-1980,the FG area decreased by 1.9%,8.8%,and 2.8%,*** FG at lower latitudes degrades to intermittently FG,and intermittently FG degrades to non-frozen ground,which caused the global FG boundary to retreat to higher latitudes from 1950 to *** annual FG areas in the NH,SH,and globe all show significant decreasing trends(p2.2. at-0.32.10^(6),-0.2.×10^(6),and-0.54×10^(6)km^(2.per decade,*** FFP prolongation in the NH is mainly influenced by LFD advance,while in the SH it is mainly controlled by FFD *** prolongation trend of FFP in the NH(1.34 d per decade)is larger than that in the SH(1.15 d per decade).

关键词： Frozen ground Freeze-thaw processes Frost-free period First freeze date Global warming

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数字信息化技术在智慧能源项目中的运用

电子技术（上海） 2024年第4期53卷 250-251页

作者：丁立伟国核信息科技有限公司山东250010

阐述以数字信息化技术在智慧能源项目中的运用特点,探讨其在智慧电网建设与运营、智慧交通系统、智慧城市能源管理中的应用。通过监测、控制和优化等手段,优化城市资源管理。

关键词：数字信息化技术智慧能源城市资源管理

A highly selective electrochemical impedimetric sensor for imidacloprid determination based on WO_(3)/MoS_(2.nanosheets/molecularly imprinted polymer composite

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Rare Metals 2024年第3期43卷 1309-1315页

作者： Long-Hua ding Ya-Wen Wang Qiu-Wen Li Li-Li Zhang Ai-Zhu Wang institute for Advanced Interdisciplinary Research School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022China HCA Florida Healthcare Westside/Northwest Hospital Internal Medicine PlantationFL33324USA

In this study,an electrochemical impedimetric sensor was established for imidacloprid(IMI)detection based on WO_(3)/MoS_(2.and molecular imprinted polymer(MIP)*** layer was prepared on electrode surface by electropolymerization of o-phenylenediamine(o-PD)in the presence of IMI template,which ensured the specific rec-ognization toward IMI.

关键词： electrochemical polymer polymerization

铜铝锌复合金属氧化物导热系数和储热特性研究

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太阳能学报 2024年第9期45卷 647-654页

作者：吕洪坤邓佳莉丁历威侯成龙肖刚祝培旺国网浙江省电力有限公司电力科学研究院杭州310014 浙江大学清洁能源与碳中和重点实验室杭州310027 浙江大学能源高效清洁利用全国重点实验室杭州310027 浙江大学嘉兴研究院嘉兴314031

铜铝复合金属氧化物储热材料导热系数低,该文通过复合导热相氧化锌提高导热系数,对其导热提升机理和改善后的储热特性进行研究。结果表明:铜铝锌复合金属氧化物Cu_(9)Al_(1)Zn_(3)固体介质连续性提高/孔隙率降低/导热系数提高71%;同时... 详细信息

铜铝复合金属氧化物储热材料导热系数低,该文通过复合导热相氧化锌提高导热系数,对其导热提升机理和改善后的储热特性进行研究。结果表明:铜铝锌复合金属氧化物Cu_(9)Al_(1)Zn_(3)固体介质连续性提高/孔隙率降低/导热系数提高71%;同时其氧化还原基本可逆,还原/氧化反应时间从Cu_(9)Al_(1)的1.45 min/4.48 min降到1.16 min/2.82.min,循环稳定性高,在2.0次循环内能够保持98.3%的还原特性和94.2.的氧化特性;成型模块储热试验中Cu_(9)Al_(1)Zn_(3)模块还原/氧化反应时间从Cu_(9)Al_(1)的30.4 min/2..5 min降到2..5 min/2..9 min,反应速率加快,反应时间缩短,能够更快完成储放热响应。

关键词：复合材料热化学热能储存热分析金属氧化物

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论观点采择与皮亚杰的去自我中心化

山东师范大学学报（人文社会科学版） 2002年第6期47卷 111-113页

作者：丁芳山东教育学院教育管理分院山东济南250013

关于儿童对个人的心理过程、心理特征的认知的研究始于皮亚杰。皮亚杰提出了“自我中心化”和“去自我中心化”的概念 ,在社会认知发展的研究中占有重要的地位。观点采择的本质特征在于个体认识上的去自我中心化 ,即能够站在他人的角度 ... 详细信息

关于儿童对个人的心理过程、心理特征的认知的研究始于皮亚杰。皮亚杰提出了“自我中心化”和“去自我中心化”的概念 ,在社会认知发展的研究中占有重要的地位。观点采择的本质特征在于个体认识上的去自我中心化 ,即能够站在他人的角度 ,从他人的角度看待问题。

关键词：观点采择自我中心化去自我中心化儿童

中红外涡旋激光在有机晶体DSTMS中的演化(特邀)

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光学学报 2024年第10期44卷 307-313页

作者：林婷孟宪泽郑卓锐丁营营宋立伟刘一田野上海理工大学光电信息与计算机工程学院上海200093 中国科学院上海光学精密机械研究所强场激光物理国家重点实验室上海201800

具有轨道角动量的涡旋光束相比其他光束有很多独特的性质,其螺旋状的波前结构和相位变化为诸多应用开辟了新的维度。对涡旋光在非线性有机晶体DSTMS中的传输演化机制进行实验研究,探索了涡旋中红外激光的非线性传输特性,利用广义高斯光... 详细信息

具有轨道角动量的涡旋光束相比其他光束有很多独特的性质,其螺旋状的波前结构和相位变化为诸多应用开辟了新的维度。对涡旋光在非线性有机晶体DSTMS中的传输演化机制进行实验研究,探索了涡旋中红外激光的非线性传输特性,利用广义高斯光束分解方法模拟分析了拉盖尔-高斯光束经过介质前后的光强分布,并对比了不同入射涡旋光的偏振态对出射光斑的影响的差异。

关键词：物理光学涡旋光束五阶非线性 DSTMS晶体偏振

Deep Insight of Design,Mechanism,and Cancer Theranostic Strategy of Nanozymes

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Nano-Micro Letters 2024年第2期16卷 165-217页

作者： Lu Yang Shuming Dong Shili Gai Dan Yang He ding Lili Feng Guixin Yang Ziaur Rehman Piaoping Yang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001People’s Republic of China Yantai Research institute Harbin Engineering UniversityYantai 264000People’s Republic of China Key Laboratory of Green Chemical Engineering and Technology of Heilongjiang Province College of Material Science and Chemical EngineeringHarbin University of Science and TechnologyHarbin 150040People’s Republic of China Department of Chemistry Quaid-i-Azam UniversityIslamabad 45320Pakistan

Since the discovery of enzyme-like activity of Fe3O4 nanoparticles in 2.07,nanozymes are becoming the promising substitutes for natural enzymes due to their advantages of high catalytic activity,low cost,mild reaction conditions,good stability,and suitable for large-scale ***,with the cross fusion of nanomedicine and nanocatalysis,nanozyme-based theranostic strategies attract great attention,since the enzymatic reactions can be triggered in the tumor microenvironment to achieve good curative effect with substrate specificity and low side ***,various nanozymes have been developed and used for tumor *** this review,more than 2.0 research articles are discussed systematically to present progress in the past five ***,the discovery and development of nanozymes are ***,classification and catalytic mechanism of nanozymes are ***,activity prediction and rational design of nanozymes are focused by highlighting the methods of density functional theory,machine learning,biomimetic and chemical ***,synergistic theranostic strategy of nanozymes are ***,current challenges and future prospects of nanozymes used for tumor theranostic are outlined,including selectivity,biosafety,repeatability and stability,in-depth catalytic mechanism,predicting and evaluating activities.

关键词： Nanozymes Classification Prediction and design Catalytic mechanism Tumor theranostics

High temperature polyimide nanocomposites containing twodimensional nanofillers for improved thermal stability and capacitive energy storage performance

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Nano Research 2024年第8期17卷 7746-7755页

作者： ding Ai Yuting Han Zongliang Xie Xi Pang Yuan Chang He Li Chenglong Wu Yonghong Cheng Guanglei Wu State Key Laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710049China institute of Materials for Energy and Environment State Key Laboratory of Bio-Fibers and Eco-TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China

Future electronic devices toward high integration and miniaturization demand reliable operation of dielectric materials at high electric fields and elevated ***,the electrical deterioration caused by Joule heat generation remains a persistent challenge to ***,the solution-processed polyimide(PI)nanocomposites with unique two-dimensional(2.)alumina nanoplates are *** improvements in the breakdown strength,charge–discharge efficiency and discharged energy density at elevated temperatures have been demonstrated in the composites,owing to simultaneously suppressed conduction loss and increased thermal conductivity upon the incorporation of 2. Al_(2.O_(3) nanofillers possessing excellent dielectric insulation and thermophysical *** predominance of Al_(2.O_(3) nanoplates in enhancing thermal stability and high-temperature capacitive performance over nanoparticles and nanowires is validated experimentally and is further rationalized via finite element ***,the Al_(2.O_(3) nanoplates filled PI nanocomposite exhibits a hightemperature capability up to 2.0℃ and remarkable efficiency(e.g.≥95% at 2.0 MV/m)over a wide temperature range,which outperforms commercial dielectric polymers and rivals the state-of-the-art polyimide nanocomposites.

关键词： capacitors polymer nanocomposites high temperature energy storage thermal stability

Unveiling the time-temperature dependence of metastability of supercooled liquid using nano-calorimetry

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Science china(Physics,Mechanics & Astronomy) 2024年第3期67卷 119-127页

作者： Yijun ding Lijian Song Zheng Wang Ruiqi Yu Junqiang Wang Lina Hu Yuanzheng Yue Edgar D.Zanotto Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong University Jinan 250061China Ningbo institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201China Key Laboratory of Experimental Teratology shandong University jinan 2.0061 China Department of Chemistry and Bioscience Aalborg UniversityAalborg 9220Denmark Department of Materials Engineering Federal University of Sao CarlosSao Carlos SP 13.565-905Brazil

There is a lack of understanding of both the conversion of an unstable glass into a metastable supercooled liquid(MSL) upon heating and the metastability of MSLs. In this study, we investigated the time-and temperature-dependent metastability of an MSL using an advanced nano-calorimetric technique. The chosen Au-based metallic glass(Au MG) allowed adequate probing of its MSL in a temperature range between 10 and 70 K above the standard glass transition temperature. We found that the survival time of the MSL state is a quadratic function of temperature. Beyond this duration threshold, the sample undergoes fast crystallization even if it is below the crystallization temperature that is measured using differential scanning *** transmission electron microscopy, we observed the formation of clusters with a partially ordered lattice structure during relaxation in the Au MG sample fabricated using a nano-calorimeter. The atomic ordering within the clusters was enhanced by increasing time and temperature in the MSL region. Once the as-produced glass entered the MSL stage upon heating followed by a quenching stage at a given rate, the mechanical properties of the quenched glass remained the same regardless of its holding temperature and duration within the MSL region. This work provides insights into the glass-MSL-crystal transformation and offers guidance for designing standard metallic glasses for property characterizations.

关键词： metallic glass supercooled liquid relaxation nucleation nano calorimetric technology