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Applied Mathematics and Mechanics(English Edition) 2023年第6期44卷 981-996页

作者： Fanming CAI Zhaomiao liu nan ZHENG yanlin REN yan PANG Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China

The boiling heat transfer technology with cavity surfaces can provide higher heat flux under lower wall superheat,which is of great significance for the cooling of electronic chips and microelectromechanical *** this paper,the boiling characteristics of the cavity surfaces are investigated based on the lattice Boltzmann(LB)method,focusing on the effects of cavity shapes,sizes,and heater thermal conductivity on the heat transfer *** results show that the triangular cavity has the best boiling performance since it has less residual vapor and higher bubble departure frequency than those of the trapezoidal and rectangular *** the cavity size increases,the enhancement of heat transfer by the cavity mouth is suppressed by the heat accumulation effect at the heater *** liquid rewetting process during bubble departure is the reason for the fluctuation of the space-averaged heat flux,and the heater thermal conductivity determines the fluctuation *** evaporation of liquid in the cavity with high thermal conductivity walls is more intense,resulting in shorter waiting time and higher bubble departure frequency.

关键词： lattice Boltzmann(LB)method boiling cavity conjugate heat transfer

Hybrid Janus nanotubes with Tunable Internal Pore Size Disassembled from Mesoporous Block Copolymer-based Hybrid Scaffolds

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Chinese Journal of Polymer Science 2022年第10期40卷 1165-1172,I0007页

作者： Chang-Xu liu Li-Jie Duan nan yan Wei Jiang State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China

The hybrid Janus nanomaterials have captured considerable attention since the asymmetric structure can combine the properties of each component and display synergistic ***,the precise design of the specific hybrid Janus nanostructures still remains a formidable ***,we for the first time report the fabrication of novel and highly uniform inorganic/organic hybrid Janus nanotubes via disassembling the mesoporous inorganic nanoparticles(NPs)/polystyrene-block-poly(4-vinylpyridine)(PS-b-P4VP)hybrid sheets,which are generated through the in situ reduction of functional metal precursors on the prepared PS-b-P4VP mesoporous *** importantly,the internal pore size of the hybrid Janus nanotubes can be precisely tuned by readily controlling the swelling time of the PS-b-P4VP sheet-like assemblies in a selective solvent for P4VP domains,thus generating the particular inorganic/organic hybrid Janus nanotubes with adjustable inner diameter *** believe that our finding will provide an efficient and universal route to fabricate the particular inorganic/organic hybrid nanotubes for hierarchical functional devices and nanomaterials.

关键词： Hybrid Janus nanotubes Block copolymer Inorganic nanoparticles Disassembly Mesoporous sheets

Effect of Hydrophobic Modification on the Durability and Environmental Properties of Porous MgF_2 Antireflective Films

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Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 649-655页

作者： Lianghong yan nan liu Songnan Zhao Hongwei yan Haibing L Xiaodong Yuan Research Center of Laser Fusion China Academy of Engineering Physical

Conventional porous MgF2 antireflective films show poor environmental durability due to its hydrophilic *** improve the film environmental durability,hydrophobic porous MgF2 antireflective films are prepared by a methyl silicone-modified MgF2 *** of the methyl silicone proportions on the film properties are examined in order to control the wettability,peak transmittance,and environmental durability of the *** modification of methyl silicone can increase the film hydrophobicity,thus decreases the adsorption of water,and improves the environmental ***,large amounts of methyl silicone could increase the film refractive index,resulting in the decrease in peak transmittance for films on BK7 *** with 40% silicone show water contact angle of 110°,peak transmittance of 98.7%,and good environmental *** results of accelerated test show that the environmental durability of the porous MgF2 films modified with 40% methyl silicone is six times higher than that of the conventional films.

关键词： Porous MgF2 Antireflective film Environmental durability Hydrophobicity

基于重叠社区划分和非回溯矩阵的社交网络多源点检测

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计算机工程与应用 2025年第1期61卷 300-307页

作者：刘岗王炎张雪芹华东理工大学信息科学与工程学院上海200237 上海市计算机软件评测重点实验室上海201112

在线社交网络的发展为信息传播提供了极大的便利,但同时在一定程度上也成为谣言等信息的重要传播渠道。社交网络的信息源检测对于控制信息的传播起着重要作用。为了解决现有社交网络多源点检测方法准确度不够高的问题,提出了一种新颖的... 详细信息

在线社交网络的发展为信息传播提供了极大的便利,但同时在一定程度上也成为谣言等信息的重要传播渠道。社交网络的信息源检测对于控制信息的传播起着重要作用。为了解决现有社交网络多源点检测方法准确度不够高的问题,提出了一种新颖的多源点同步检测方法SVT-BiasMSI。该方法将多源检测问题转化为若干单源检测问题,采用局部度中心节点及相邻节点的Jaccard系数选取种子节点,使用Voronoi方法对社交网络进行初步社区划分,通过tolerance neighborhood方法寻找分区之间重叠部分的节点并实现重叠社区划分,为了兼顾网络全局和局部信息,基于传染邻域偏差改进非回溯矩阵多源点检测方法,提高单源点检测精度。在多个社交网络数据集中的实验表明,所提的方法能够有效提高在线社交网络多源点检测和定位准确度。

关键词：社交网络多源检测重叠社区划分非回溯矩阵传染邻域偏值

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论产品责任中的产品自损

北京理工大学学报（社会科学版） 2025年第1期27卷 66-74页

作者：谢远扬刘岩中国政法大学民商经济法学院北京100088 北京市朝阳区人民法院北京100016

产品自损是否属于产品责任的赔偿范围,立法、司法和理论界各有不同的看法。基于产品瑕疵的产品自损和基于产品缺陷造成他人损害的损害赔偿责任,在责任性质、构成要件、责任形态等方面各有不同。在传统民法体系中,前者属于合同法中的瑕... 详细信息

产品自损是否属于产品责任的赔偿范围,立法、司法和理论界各有不同的看法。基于产品瑕疵的产品自损和基于产品缺陷造成他人损害的损害赔偿责任,在责任性质、构成要件、责任形态等方面各有不同。在传统民法体系中,前者属于合同法中的瑕疵担保责任,后者属于侵权法中的无过错产品责任,具有明确的区分。《侵权编解释》第19条特别规定将产品自损纳入产品责任的赔偿范围,突破了传统民法理论中合同责任和侵权责任的界分。为了避免体系内部的规范冲突,在实践中需要特别注意,在适用范围上,明确只有缺陷导致的产品自损才能通过侵权责任救济。在赔偿范围上,部分的履行利益能够纳入侵权责任的保护范围。在免责事由上,瑕疵检验期间并不能成为不承担侵权责任的理由。

关键词：产品自损产品责任瑕疵缺陷责任范围

调整细胞培养条件提高间充质干细胞外泌体治疗骨关节炎的潜能

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中国组织工程研究 2025年第1期29卷 164-174页

作者：钱燕刘启颂深圳国家感染性疾病临床医学研究中心南方科技大学深圳市第三人民医院广东省深圳市518112

背景:间充质干细胞外泌体有望发展成为治疗骨关节炎的无细胞疗法,而通过调整细胞培养条件,可以进一步提高其治疗活性和临床转化潜能。目的:综述分析细胞培养条件对外泌体活性的影响,分析其临床转化潜力。方法:查阅国内外有关骨关节炎/... 详细信息

背景:间充质干细胞外泌体有望发展成为治疗骨关节炎的无细胞疗法,而通过调整细胞培养条件,可以进一步提高其治疗活性和临床转化潜能。目的:综述分析细胞培养条件对外泌体活性的影响,分析其临床转化潜力。方法:查阅国内外有关骨关节炎/软骨损伤修复与间充质干细胞来源外泌体的文献。检索词分别为“外泌体,间充质干细胞,骨关节炎,软骨修复”和“exosomes,extracellular vesicles,mesenchymal stem cells,osteoarthritis,cartilage repair”,检索数据库分别为PubMed和中国知网数据库,检索时限为2010-2023年,最后纳入100篇文献进行总结和分析。结果与结论:(1)在间充质干细胞的培养过程中,提供有利于软骨细胞生长的物理环境,或添加软骨保护小分子、成软骨诱导因子和炎症因子等刺激细胞,可以进一步提高间充质干细胞外泌体在维持软骨细胞表型、促进软骨再生和免疫抑制等方面的调控活性;因此,其他具有相似特征的物理或化学因素,也有可能提升间充质干细胞外泌体治疗骨关节炎的疗效。(2)低氧诱导、脉冲电磁场刺激、生物反应器及软骨保护分子(如人甲状旁腺素1-34)刺激等细胞培养方案具有安全、可规模化生产等优点,可用于制备临床用途的、疗效好的间充质干细胞外泌体。(3)间充质干细胞外泌体有望实现骨关节炎的修正治疗,通过调整细胞培养方案提升治疗活性,可进一步提高其临床转化的可行性。

关键词：间充质干细胞外泌体骨关节炎软骨修复细胞培养低氧诱导预处理三维培养软骨保护因子炎症因子

Precisely engineered bionic Cu-doped titanium dioxide nanoarrays/fluorine-doped tin oxide with excellent antibacterial and antifouling properties

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Tungsten 2024年第3期6卷 522-528页

作者： yan-nan Li yan Zhao Jun-Jie liu School of Physical Science and Technology College of Energy Materials and ChemistryInner Mongolia UniversityHohhot 010021China

With the development of society and the aggravation of population aging,the abuse of various antibiotics seriously affects people's living environment[1].Bacterial pollution has become a major problem in the fields of... 详细信息

关键词： titanium fouling fluorine

Preparation of Modified Composite nanofiltration Membrane Synergistically Using Carboxylic Multi- walled Carbon nanotube and β-cyclodextrin

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 232-239页

作者： liu Peng MAO Junpeng FANG yanfeng YU Yunwu CHEN Changxiu TANG Ning WAN Ye GU Yaxin liu Yunxue WANG Lihua School of Materials Science and Engineering Shenyang Jianzhu UniversityShenyang 110168China

A new modified blend ultrafiltration(UF)membrane with good hydrophilicity,high porosity and excellent anti-fouling performance was developed by using carboxylic multi-walled carbon nanotube(CMWCNT)as casting solution ***,a composite nanofiltration(NF)membrane with large water flux and good retention rate was fabricated by using the PVDF/CMWCNT blend UF membrane as the substrate,and polyvinyl alcohol(PVA),β-cyclodextrin(β-CD)and polyethylenimine(PEI)as the coating *** results show that with the appropriate addition of CMWCNT in the casting solution,the surface roughness,porosity and recovery rate of the PVDF/CMWCNT blend UF membrane is obviously *** water flux of blend UF membrane is significantly improved when the CMWCNT content increases from 0 wt%to 0.2 wt%.The water flux of blend UF membrane with 0.2 wt%CMWCNT is 162.7 L/(m^(2)·h),which is 44.3%higher than that of the pure PVDF ***β-CD content is 0.8 wt%,the retention rate of Congo red by PVDF/CMWCNT/β-CD composite NF membrane reaches 98.7%,which is 28.3%higher than that of single PVA/PEI modified *** research will provide a new idea and simple method for developing novel high-performance composite NF membranes.

关键词： CMWCNT cyclodextrin nanofiltration membrane

Two sequential surgeries in infant with multiple floor of the mouth dermoid cysts: A case report

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World Journal of Clinical Cases 2020年第13期8卷 2885-2892页

作者： nan-nan liu Xin-Yue Zhang yan-yan Tang Zhi-Ming Wang Department of Stomatology Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina

BACKGROUND Multiple intraoral dermoid cysts of large magnitude generally appear in the second or third decade of *** are rare in infants and are usually *** this case,a large mass was identified in utero during prenatal *** SUMMARY We introduce a rare case on multiple dermoid cysts in the floor of the mouth of an infant who underwent two surgeries for *** magnetic resonance imaging confirmed a large well-circumscribed cystic lesion that originated at the former midline region in the floor of the mouth in which a suspicious lesion of minute size was likely compressed by the bulkier mass and ***,the infant underwent two surgeries by an intraoral approach within 9 *** 5 mo after the second operation,a routine follow-up ultrasound showed evidence of an additional *** further surgery was planned because the tumor had no immediate *** This report demonstrates the importance of carefully analyzing preoperative imaging to avoid multiple operations for a seemingly isolated oral cyst.

关键词： Multiple Dermoid cysts Floor of the mouth Infant Case report Recurrent

Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期68卷 21-25页

作者： Leyu liu Zhaoming Xia Zeyu Wang Yinjuan Chen Hai Xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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