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Journal of Thermal Science 2025年第1期34卷 24-33页

作者： lin Yongjie ZHANG Cancan WU yuting ZHANG Yi LU yuanwei Key Laboratory of Heat Transfer and Energy Conversion National User-Side Energy Storage Innovation Research and Development CenterBeijing University of Technology

Numerical simulations of the flow and heat transfer characteristics of four shell-and-tube molten salt electric heaters with different perforation rates was ***-and-tube electric heaters have the same geometry and tube arrangement,and all of them use single segmental baffles,but there exist four different baffle openings（φ）,i.e.,0%,2.52%,4.06%,and 6.31%.The results indicated that the reasonable baffle opening could significantly reduce the shell-side pressure drop,effectively decreasing the shell-side flow dead zone *** can eliminate the local high-temperature phenomenon on the surface of electric heating tubes,but the heat transfer coefficient is slightly *** perforated schemes significantly reduce shell-side pressure drop compared to the baseline solution without open *** particular,the φ=6.31% scheme exhibits the optimal performance among all the schemes,with a maximum reduction of up to 50.50% in shell-side pressure drop relative to the unopened holes *** heat transfer coefficient is the highest for φ=0%,exhibiting a range of5.26% to 5.73%,5.14% to 5.99%,and 7.31% to 8.54% higher than φ=2.52%,4.06%,and 6.31%,respectively,within the calculated *** composite index h/（Δp）1/3was higher for all open-hole solutions than that for the unopened-hole *** best overall performance was for φ=6.31%,which improved the composite index by15.29% to 17.18% over the unopened-hole solution.

关键词： molten salt electric heater perforated baffles heat transfer

RF Optimizer Model for Predicting Compressive Strength of Recycled Concrete

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 215-223页

作者： LIU lin WANG Liuyan WANG Hui SUN Huayue School of Civil Engineering and Architecture Shenyang UniversityShenyang 110000China

Traditional machine learning(ML)encounters the challenge of parameter adjustment when predicting the compressive strength of reclaimed *** address this issue,we introduce two optimized hybrid models:the Bayesian optimization model(B-RF)and the optimal model(Stacking model).These models are applied to a data set comprising 438 observations with five input variables,with the aim of predicting the compressive strength of reclaimed ***,we evaluate the performance of the optimized models in comparison to traditional machine learning models,such as support vector regression(SVR),decision tree(DT),and random forest(RF).The results reveal that the Stacking model exhibits superior predictive performance,with evaluation indices including R2=0.825,MAE=2.818 and MSE=14.265,surpassing the traditional ***,we also performed a characteristic importance analysis on the input variables,and we concluded that cement had the greatest influence on the compressive strength of reclaimed concrete,followed by ***,the Stacking model can be recommended as a compressive strength prediction tool to partially replace laboratory compressive strength testing,resulting in time and cost savings.

关键词： machine learning recycled concrete compressive strength

Recent development in electrode design for wide-temperature supercapacitors

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Science China Chemistry 2025年第1期68卷 96-117页

作者： Jianhong Liu Qiang Zhou yuxiao lin Xinsheng Zhao Guangmin Zhou Xiaoxiao Li School of Physics and Electronic Engineering Jiangsu Normal University Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School Tsinghua University

An ever-increasing market demand has stimulated the soaring enthusiasm of researchers to develop wide-temperature supercapacitors(SCs). The active electrode is one of the most important parts of SC, which is directly related to the energy density,power transmission and long-term cyclability of the device in the wide-temperature environment. Compared with the SC electrodes aimed for room-temperature application, the SC electrodes for operating at wide-temperature scene often face greater challenges. In this review, the main challenges of SC electrodes under various temperature conditions, including low, high and cross-fade temperatures, are summarized. The relevant performance decay and failure mechanisms of wide-temperature SC electrodes are analyzed. In addition, this review deals with the recent studies and developments in robust wide-temperature SC electrodes with respect to the rational design of electrode structures and the exploitation of advanced active materials. Finally, the future directions for exploring reliable wide-temperature SCs are also proposed.

关键词： supercapacitor wide-temperature electrode design active materials

Aerodynamic Optimization and Flow Mechanism for a Compressor Cascade at Low Reynolds Number

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Journal of Thermal Science 2025年第1期34卷 92-109页

作者： LI lin ZHANG Jianshe CHEN Caiyan TAN Wei ZHANG Yanfeng Key Laboratory of Light-Duty Gas-Turbine Institute of Engineering ThermophysicsChinese Academy of Sciences University of Chinese Academy of Sciences National Key Laboratory of Science and Technology on Advanced Light-duty Gas-turbine

Low-Reynolds-number effect is an important factor affecting the performance of compressors and other main components of high-altitude long-endurance unmanned aerial *** improve the flow condition and reduce flow loss under the condition of high altitude and low Reynolds number(Re),this paper proposes an optimization process based on a surrogate model,which combines the class-shape transformation method(CST),the Latin hypercube sampling(LHS) method,the light gradient-boosting machine algorithm(LightGBM),and a genetic algorithm(GA) to optimize a high-subsonic compressor *** surrogate model is verified to be accurate and can be used in the optimization *** accuracy of the GA is higher than the other algorithms under common test *** optimization results are verified by numerical simulation,and the flow differences before and after optimization are compared,especially the flow within the boundary *** changing the blade shape,the optimization process adjusts the loading distribution to delay the transition of the optimized blade on the suction surface,which changes the turbulent reattachment in the laminar separation bubble(LSB) into laminar ***,the mixing loss induced by the turbulent reattachment of the LSB and the wake loss of turbulent separation at the trailing edge are significantly reduced,and the performance of the compressor profile is finally *** addition,turbulent separation of the optimized profile is delayed reducing the range of the wake region on the suction *** this optimization process,the reduction of total pressure loss coefficient at Re of 2.5×10～5,3.5×10～5,and 4.5×10～5 are 16.32%,20.76%,and 22.16%,respectively.

关键词： Reynolds number

吴茱萸粉外敷神阙联合脐周按摩促进老年中风患者胃肠蠕动的疗效观察

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深圳中西医结合杂志 2015年第7期25卷 38-39页

作者：刘明珠黄佩娟林玉冰广东省阳江市中医医院广东阳江529500

目的:探讨吴茱萸粉外敷神阙联合脐周按摩促进老年中风患者胃肠蠕动的效果。方法:将阳江市中医医院2012年3月-2014年8月收治的50例中风患者随机分为对照组与观察组,每组各25例,对照组给予中风病人常规护理,观察组在对照的护理基础上增加... 详细信息

目的:探讨吴茱萸粉外敷神阙联合脐周按摩促进老年中风患者胃肠蠕动的效果。方法:将阳江市中医医院2012年3月-2014年8月收治的50例中风患者随机分为对照组与观察组,每组各25例,对照组给予中风病人常规护理,观察组在对照的护理基础上增加吴茱萸粉外敷神阙联合脐周按摩治疗。每天对患者的胃潴留、腹胀(腹围)、排便情况进行评测。结果:对照组患者总有效率为60%,观察组为92%,组间比较,差异具有统计学意义(P<0.05)。结论:吴茱萸粉外敷神阙联合脐周按摩可有效促进老年中风患者胃肠蠕动。

关键词：吴茱萸外敷脐周按摩中风胃肠蠕动

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取得实效立法研究

福建政法管理干部学院学报 2002年第3期4卷 54-56页

作者：吴伟智林育滨刘嗣元中南财经政法大学湖北武汉430073 厦门大学福建厦门361005

取得实效 ,又称实效取得 ,即无权占有人以行使所有权或者其他物权的意思公然、和平和继续占有他人的物达一定期间 ,而取得的所有权或其他权利的制度。[1]它是大陆法系民法和英美法系财产法的重要制度。但是我国立法机关新近公布的《物... 详细信息

取得实效 ,又称实效取得 ,即无权占有人以行使所有权或者其他物权的意思公然、和平和继续占有他人的物达一定期间 ,而取得的所有权或其他权利的制度。[1]它是大陆法系民法和英美法系财产法的重要制度。但是我国立法机关新近公布的《物权法草案》(征求意见稿 )却无此方面的规定 ,这令人十分不解。本文拟对取得实效制度基本内容进行分析 ,阐述我国建立取得实效制度的必要性 ,并对其提出建议 ,以求对物权立法有所裨益。

关键词：取得实效民法物权立法

Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： Yi Qi Xueying Chen Bowen Liu Xuliang lin Xueqing Qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel Biomass valorization Electrocatalysis Lignin oxidation Coupling

Wafer‑Scale Vertical 1D GaN Nanorods/2D MoS_(2)/PEDOT:PSS for Piezophototronic Effect‑Enhanced Self‑Powered Flexible Photodetectors

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Nano-Micro Letters 2025年第3期17卷 102-116页

作者： Xin Tang Hongsheng Jiang Zhengliang lin Xuan Wang Wenliang Wang Guoqiang Li State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Department of Electronic Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640People’s Republic of China

van der Waals(vdW)heterostructures constructed by lowdimensional(0D,1D,and 2D)materials are emerging as one of the most appealing systems in next-generation flexible ***,hand-stacked vdW-type photodetectors are not compatible with large-areaarray fabrication and show unimpressive performance in self-powered ***,vertical 1D GaN nanorods arrays(NRAs)/2D MoS_(2)/PEDOT:PSS in wafer scale have been proposed for self-powered flexible photodetectors arrays *** as-integrated device without external bias under weak UV illumination exhibits a competitive responsivity of 1.47 A W^(−1)and a high detectivity of 1.2×10^(11)Jones,as well as a fast response speed of 54/71μs,thanks to the strong light absorption of GaN NRAs and the efficient photogenerated carrier separation in type-II ***,the strain-tunable photodetection performances of device have been ***,the device at−0.78%strain and zero bias reveals a significantly enhanced photoresponse with a responsivity of 2.47 A W^(−1),a detectivity of 2.6×10^(11)Jones,and response times of 40/45μs,which are superior to the state-of-the-art self-powered flexible *** work presents a valuable avenue to prepare tunable vdWs heterostructures for self-powered flexible photodetection,which performs well in flexible sensors.

关键词： Vertical nanorod arrays van der Waals heterostructure Piezophototronic effect Self-powered photodetection Flexible sensors

基于最大Lyapunov指数方法预测油田产量

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西南石油学院学报 2005年第3期27卷 32-33,i003页

作者：朱义东李玉林黄炳光王怒涛唐坚西南石油学院石油工程学院四川成都610500 塔里木油田勘探事业部新疆塔里木841000 吉林油田分公司采油工艺研究所吉林松原138003

传统的预测方法是先建立数据序列的主观模型,然后根据主观模型进行计算和预测,而混沌科学的发展使得不必事先建立主观模型,直接根据数据序列本身所计算出来的客观规律(如Lyapunov指数等)进行预测,避免预测的人为主观性。提出适用于小数... 详细信息

传统的预测方法是先建立数据序列的主观模型,然后根据主观模型进行计算和预测,而混沌科学的发展使得不必事先建立主观模型,直接根据数据序列本身所计算出来的客观规律(如Lyapunov指数等)进行预测,避免预测的人为主观性。提出适用于小数据序列的方法,几乎利用了所有的数据信息,能够计算出比较精确的Lyapunov指数。结果表明:该方法可靠、计算量小、相对易操作,精度高,并能得出最大预测时间。

关键词：最大Lyapunov指数小数据量方法混沌时间序列预测

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艾灸配合局部吹氧治疗压疮的疗效观察

按摩与康复医学 2013年第7期4卷 82-83页

作者：刘明珠林玉冰林海明蔡璧君阳江市中医医院广东阳江529500

目的：观察艾灸配合局部吹氧治疗压疮的疗效。方法：将60例压疮患者随机分为对照组和观察组。对照组患者行传统治疗，观察组患者行艾灸配合局部吹氧治疗，比较两组患者的疼痛度、粘连度及创面平均愈合时间。结果：观察组患者的疼痛度和... 详细信息

目的：观察艾灸配合局部吹氧治疗压疮的疗效。方法：将60例压疮患者随机分为对照组和观察组。对照组患者行传统治疗，观察组患者行艾灸配合局部吹氧治疗，比较两组患者的疼痛度、粘连度及创面平均愈合时间。结果：观察组患者的疼痛度和粘连度均低于对照组，平均愈合天数少于对照组（P〈O．05）。结论：艾灸配合局部吹氧治疗压疮具有良好的疗效，值得在临床推广应用。

关键词：压疮艾灸局部吹氧