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Friction 2016年第3期4卷 257-265页

作者： Jingyan NIAN yifan si Zhiguang GUO Ping GAO Weimin LIU State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 ChinaHubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei University Wuhan 430062 China

In order to increase the life of spacecraft, it is important to improve the comprehensive lubrication performance. Multiple alkylated cyclopentane (MAC) lubricants are presently gaining wide acceptance for actual space applications; adding extreme pressure additive is a strategy to improve lubrication performance. In this study, taking 1,3,4-tri-(2-octyldodecyl) cyclopentane as base oil, tricresol phosphate (traditional additive) and tri-(2-octyldodecyl) phosphate (developmental additive) have been screened computationally for compatibility, shear film forming and energy dissipation. Theoretical results indicate that (a) tricresol phosphate additive is not suited for addition to 1,3,4-tri-(2-octyldodecyl) cyclopentane lubricant due to limited compatibility; (b) tri-(2-octyldodecyl) phosphate is an excellent lubricant additive due to its perfect compatibility, ease of forming a shear film on the surface of friction pairs, higher strength, and low energy dissipation; and (c) lubrication occurs through the solid-liquid composite lubrication mechanism. These theoretical results were confirmed experimentally.

关键词： 1,3,4-tri-(2-octyldodecyl) cyclopentane lubricant additive computational screening lubrication mechanism experimental verification

Electrospun Textile Strategies in Tendon to Bone Junction Reconstruction

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Advanced Fiber Materials 2023年第3期5卷 764-790页

作者： Xiaoyun Xu yifan si Yi Zhao Qinfei Ke Jinlian Hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China Shanghai Frontiers Science Center of Advanced Textiles Donghua UniversityShanghai 201620China Shanghai Institute of Technology Shanghai 200235China

The repair of tendon to bone junction(TBJ)remains a tremendous challenge in tissue engineering due to the complicated structure,components,mechanical properties,and cell *** order to reconstruct the tissue and restore its functionality,biomedical scaffolds with hierarchical and gradient structures have been fabricated by various *** recent decades,electrospinning has become one of the most popular methods in fabricating TBJ scaffolds due to easy fabrication,high porosity,and ECM-like nano-scale ***,mechanical properties are the pain point of electrospun biomedical *** textile technology can be exploited to compensate for this weakness,which will be deeply discussed *** review will start with a brief introduction to the structure and function of the native TBJ tissue and a short overview of electrospinning ***,different electrospun biomedical scaffolds for TBJ repair will be summarized and ***,some advanced technologies and modification methods in fabricating functionalized electrospun TBJ scaffolds are *** the end,current challenges and solutions are being proposed,which would provide instruction for the research of electrospun textile TBJ scaffolds.

关键词： Electrospun Textile Tendon to bone Tissue engineering Biomimetic

Bioinspired All‑Fibrous Directional Moisture‑Wicking Electronic Skins for Biomechanical Energy Harvesting and All‑Range Health Sensing

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Nano-Micro Letters 2023年第4期15卷 277-293页

作者： Chuanwei Zhi Shuo Shi Shuai Zhang yifan si Jieqiong Yang Shuo Meng Bin Fei Jinlian Hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China Institute of Textiles and Clothing The Hong Kong Polytechnic UniversityHong Kong S.A.R 999077China City University of Hong Kong Shenzhen Research Institute Shenzhen 518057People’s Republic of China

Electronic skins can monitor minute physiological signal variations in the human skins and represent the body’s state,showing an emerging trend for alternative medical diagnostics and human-machine *** this study,we designed a bioinspired directional moisture-wicking electronic skin(DMWES)based on the construction of heterogeneous fibrous membranes and the conductive MXene/CNTs electrospraying *** moisture transfer was successfully realized by surface energy gradient and push-pull effect via the design of distinct hydrophobic-hydrophilic difference,which can spontaneously absorb sweat from the *** DMWES membrane showed excellent comprehensive pressure sensing performance,high sensitivity(maximum sensitivity of 548.09 kPa^(−1)),wide linear range,rapid response and recovery *** addition,the single-electrode triboelectric nanogenerator based on the DMWES can deliver a high areal power density of 21.6μW m^(−2) and good cycling stability in high pressure energy ***,the superior pressure sensing and triboelectric performance enabled the DMWES for all-range healthcare sensing,including accurate pulse monitoring,voice recognition,and gait *** work will help to boost the development of the next-generation breathable electronic skins in the applications of AI,human-machine interaction,and soft robots.

关键词： Bioinspired Electrospinning Electronic skin Directional moisture wicking MXene

Bioinspired Stable single‑Layer Janus Fabric with Directional Water/Moisture Transport Property for Integrated Personal Cooling Management

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Advanced Fiber Materials 2023年第1期5卷 138-153页

作者： yifan si Shuo Shi Zhichao Dong Hanbai Wu Fengxin Sun Jieqiong Yang Jinlian Hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China CAS Key Laboratory of Bio‑Inspired Materials and Interfacial Sciences Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Eco‑Textiles of Ministry of Education Jiangnan UniversityWuxi 214122China

Extensive progress has been achieved regarding Janus fabric for directional water transport due to its excellent and feasible personal cooling management ability,which has great significance for energy conservation,pollution reduction,and human ***,existing Janus asymmetric multilayer fabrics for directional water transport are still limited by their com-plicated syntheses and poor *** by the compositionally graded architecture of leaf cuticles,we propose a single-layer Janus personal cooling management fabric(JPCMF)via a one-step electrospinning *** JPCMF shows not only great directional bulk water transport ability but also asymmetry moisture(water vapor)transport ability with a high asymmetry factor(1.49),water vapor transmission value(18.5 kg^(-1) m-2 D-1),and water evaporation rate(0.735 g h^(-1)).Importantly,the JPCMF exhibits outstanding durability and stability thanks to a novel electrostatic adsorption-assisted self-adhesion strategy for resisting abrasion,peeling and *** these characteristics,the JPCMF can achieve a 4.0°C personal cooling management effect,better than taht of cotton fabric,on wet *** good biocompatibility and nontoxic-ity also endow the JPCMF with the potential to be a self-pumping *** strategy should facilitate a new method for developing next-generation intelligent multifunctional fabrics.

关键词： Cooling management Janus directional transport Electrospinning Superwettability bioinspired

Wettability Gradient-Induced Diode:MXene-Engineered Membrane for Passive-Evaporative Cooling

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Nano-Micro Letters 2024年第8期16卷 382-397页

作者： Leqi Lei Shuo Meng yifan si Shuo Shi Hanbai Wu Jieqiong Yang Jinlian Hu Department of Biomedical Engineering City University of Hong KongHong Kong S.A.R 999077China

Thermoregulatory textiles,leveraging high-emissivity structural materials,have arisen as a promising candidate for personal cooling management;however,their advancement has been hindered by the underperformed water moisture transportation capacity,which impacts on their thermophysiological ***,we designed a wettability-gradient-induced-diode(WGID)membrane achieving by MXene-engineered electrospun technology,which could facilitate heat dissipation and moisture-wicking *** a result,the obtained WGID membrane could obtain a cooling temperature of 1.5℃ in the“dry”state,and 7.1℃ in the“wet”state,which was ascribed to its high emissivity of 96.40%in the MIR range,superior thermal conductivity of 0.3349 W m^(-1) K^(-1)(based on radiation-and conduction-controlled mechanisms),and unidirectional moisture transportation *** proposed design offers an approach for meticulously engineering electrospun membranes with enhanced heat dissipation and moisture transportation,thereby paving the way for developing more efficient and comfortable thermoregulatory textiles in a high-humidity microenvironment.

关键词： Passive-evaporative cooling MXene Electrospun membrane Wettability gradient Diode

医源性胃穿孔中应用内镜下闭合技术的治疗效果与安全性分析

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当代医学 2019年第17期25卷 18-20页

作者：斯轶凡南昌大学第四附属医院消化内科

目的分析医源性胃穿孔中应用内镜下闭合技术的治疗效果与安全性。方法选取本院2015年11月至2017年11月期间胃黏膜下肿瘤行内镜治疗术,在术中发生胃穿孔后行金属闭合技术的21例患者作为研究对象。分析内镜下金属闭合技术在医源性胃穿孔... 详细信息

目的分析医源性胃穿孔中应用内镜下闭合技术的治疗效果与安全性。方法选取本院2015年11月至2017年11月期间胃黏膜下肿瘤行内镜治疗术,在术中发生胃穿孔后行金属闭合技术的21例患者作为研究对象。分析内镜下金属闭合技术在医源性胃穿孔的治疗效果与安全性。结果本组21例患者均及时有效进行内镜下OTSC闭合,平均留置胃管时间(3.15±1.12)d,平均开放饮食时间(3.65±1.16)d,平均术后住院时间(6.95±1.23)d,平均抗生素应用时间(5.62±1.10)d;闭合手术后出现2例出血,8例发热,6例腹痛;闭合时间10~20min,平均(16.25±1.63)min。结论内镜下OTSC夹闭系统技术对医源性胃穿孔的疗效肯定,且术后并发症少,安全性好。

关键词：金属夹医源性胃穿孔内镜治疗治疗效果安全性

微型探头超声内镜对消化道隆起性病变诊断价值的研究

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当代医学 2018年第31期24卷 84-86页

作者：斯轶凡曹燕南昌大学第四附属医院消化内科江西南昌330000

目的本课题研究微型探头超声内镜(mEUS)检查术诊断消化道隆起性病变的诊断准确率,总结探讨消化道隆起性病变在mEUS的超声图像特点,评价微探头超声内镜对消化道隆起性病变的诊断能力。方法回顾性分析2011年11月～2015年12月行微探头超声... 详细信息

目的本课题研究微型探头超声内镜(mEUS)检查术诊断消化道隆起性病变的诊断准确率,总结探讨消化道隆起性病变在mEUS的超声图像特点,评价微探头超声内镜对消化道隆起性病变的诊断能力。方法回顾性分析2011年11月～2015年12月行微探头超声内镜检查术检查消化道隆起性病例302例,所有病例诊断结果均经内镜病理,手术病理或随访确诊,比较微探头超声内镜检查结果及传统内镜检查结果的诊断准确率,数据采用SPSS 13.0统计学处理,计数资料采用百分率及构成比描述,组间率比较采用x^2计学检验,以P<0.05有统计学意义。结果共有302例患者行微型探头超声内镜检查术,其中mEUS检查阳性286例,胃镜检查阳性176例,mEUS阳性率与胃镜检查阳性率比较(x^2=6.317668,P<0.05),差异有统计学意义。结论微探头超声内镜能清晰的显示消化道管壁各层结构,反映病变的起源层次及浸润深度。因此,其能对大多数消化道隆起性病变做出准确诊断。

关键词：微型探头超声消化道隆起性病变诊断

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适用于PHR系统的混合属性加密签名方案

信息网络安全 2016年第12期 46-50页

作者：陈飞司一帆韩益亮武警工程大学陕西西安710086

PHR系统可以用于个人身体健康信息的交互,但信息的存储往往需要一个第三方服务器,这给用户的隐私信息安全带来了隐患。同时,现有PHR系统仅考虑到服务器的存储优势,并没有考虑到其计算优势。为了有效保护用户个人隐私,提高用户计算效率,... 详细信息

PHR系统可以用于个人身体健康信息的交互,但信息的存储往往需要一个第三方服务器,这给用户的隐私信息安全带来了隐患。同时,现有PHR系统仅考虑到服务器的存储优势,并没有考虑到其计算优势。为了有效保护用户个人隐私,提高用户计算效率,文章提出了一个密文策略的外包混合属性加密签名方案,方案结合属性签名隐私保护以及属性加密访问控制的功能,为消息提供机密性、不可伪造性和匿名性,其密钥生成代价小于属性签名与属性加密的简单组合。该方案将接收方大部分的存储和验证以及解密算法中所有的双线性对运算交由云服务器执行,用户只需执行指数运算,有效地节约了用户本地资源。

关键词： PHR系统混合属性加密签名隐私保护外包计算

NiCr_(2)O_(4)化合物的磁相变临界行为

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安徽大学学报（自然科学版） 2024年第5期48卷 42-46页

作者：张名锋曹睿阳斯一凡戴振翔郑赣鸿安徽大学材料科学与工程学院安徽合肥230601 安徽大学物理与光电工程学院安徽合肥230601

采用标准固相法制备NiCr_(2)O_(4),并对其结构、磁性能和磁相变临界行为进行研究.研究结果表明:NiCr_(2)O_(4)具有尖晶石结构;当温度低于居里温度TC时,随着磁场强度增加,磁化强度趋于饱和;当温度高于TC,随着磁场强度增加,磁化强度线性增... 详细信息

采用标准固相法制备NiCr_(2)O_(4),并对其结构、磁性能和磁相变临界行为进行研究.研究结果表明:NiCr_(2)O_(4)具有尖晶石结构;当温度低于居里温度TC时,随着磁场强度增加,磁化强度趋于饱和;当温度高于TC,随着磁场强度增加,磁化强度线性增加,NiCr_(2)O_(4)呈顺磁特征;长程和短程铁磁相互作用共存于NiCr_(2)O_(4).

关键词： NiCr_(2)O_(4) 二级相变临界行为居里温度

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消化内镜联合四联疗法对胃溃疡出血的治疗效果和再出血的原因分析

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当代医学 2019年第12期25卷 56-58页

作者：斯轶凡王农荣谢桂生南昌大学第四附属医院消化内科江西南昌330003

目的探讨消化内镜联合四联疗法对胃溃疡出血的治疗效果和再出血的原因。方法选取本院在2016年6月至2017年6月期间收治的90例胃溃疡出血患者作为研究对象,通过随机数字表法分为观察组(45例)和对照组(45例),对照组患者给予四联疗法治疗,... 详细信息

目的探讨消化内镜联合四联疗法对胃溃疡出血的治疗效果和再出血的原因。方法选取本院在2016年6月至2017年6月期间收治的90例胃溃疡出血患者作为研究对象,通过随机数字表法分为观察组(45例)和对照组(45例),对照组患者给予四联疗法治疗,观察组患者采取消化内镜联合四联疗法治疗,对比两组患者治疗的临床疗效并通过多元Logistic回归分析影响治疗后再出血的相关因素。结果观察组有效率95.56%高于对照组77.78%,差异有统计学意义(P<0.05),由单因素分析显示,出血量及溃疡AI期、血小板水平、血红蛋白含量、未联合内镜治疗等均是属于治疗后再出血的影响因素,通过多因素Logistic回归分析发现溃疡AI期及血红蛋白含量低、未联合内镜治疗属于影响胃溃疡患者治疗后再出血的独立危险因素(P<0.05)。结论消化内镜联合四联疗法对胃溃疡出血的治疗效果较好,有效的降低了再出血的发生率,且溃疡AI期和血红蛋白含量低为患者再出血的相关危险因素。

关键词：消化内镜四联疗法胃溃疡出血临床疗效再出血原因