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高掺量胶粉改性沥青混合料疲劳性能对比研究

公路交通技术 2024年第2期40卷 82-86,105页

作者：赵占林高志良蒲昌瑜骆妍魏贵岭公路建设与养护技术、材料及装备交通运输行业研发中心石家庄050091 河北省交通规划设计研究院有限公司石家庄050091 河北雄安荣乌高速公路有限公司河北保定071700

为对比研究高掺量胶粉改性沥青混合料疲劳性能,选取5种不同类型混合料级配和3种改性沥青设计出8种沥青混合料进行疲劳试验。结果表明:1)高掺量胶粉改性沥青混合料路用性能较SBS改性沥青类混合料优越;2)40%胶粉改性沥青不同级配类型混合... 详细信息

为对比研究高掺量胶粉改性沥青混合料疲劳性能,选取5种不同类型混合料级配和3种改性沥青设计出8种沥青混合料进行疲劳试验。结果表明:1)高掺量胶粉改性沥青混合料路用性能较SBS改性沥青类混合料优越;2)40%胶粉改性沥青不同级配类型混合料疲劳性能整体优于30%胶粉改性沥青混合料,且疲劳性能优势随着应变水平提高呈先增大后减小的趋势;3)相较SBS改性沥青类混合料,胶粉改性沥青混合料疲劳性能具有明显的优势;4)随着公称最大粒径增大,同一掺量胶粉改性沥青其不同级配类型混合料的疲劳性能呈下降趋势,且随着应变水平增加,疲劳寿命逐渐降低。

关键词：高掺量胶粉改性沥青矿料级配沥青混合料疲劳性能

OPTIMAL　VALUE　FUNCTIONS　IN　MATHEMATICAL　PROGRAMMING　AND　CONVERGENCE　FOR　GRADIENT　PROJECTION　METHOD

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Systems Science and Mathematical Sciences 1994年第3期7卷 261-269页

作者： WANG changyu zhao Fuan (InStitute of OR, Qufu Normal University, Qufu 273165, China)

ＯＰＴＩＭＡＬＶＡＬＵＥＦＵＮＣＴＩＯＮＳＩＮＭＡＴＨＥＭＡＴＩＣＡＬＰＲＯＧＲＡＭＭＩＮＧＡＮＤＣＯＮＶＥＲＧＥＮＣＥＦＯＲＧＲＡＤＩＥＮＴＰＲＯＪＥＣＴＩＯＮＭＥＴＨＯＤ￥ＷＡＮＧＣｈａｎｇｙｕ；ＺＨＡＯＦｕａｎ... 详细信息

ＯＰＴＩＭＡＬＶＡＬＵＥＦＵＮＣＴＩＯＮＳＩＮＭＡＴＨＥＭＡＴＩＣＡＬＰＲＯＧＲＡＭＭＩＮＧＡＮＤＣＯＮＶＥＲＧＥＮＣＥＦＯＲＧＲＡＤＩＥＮＴＰＲＯＪＥＣＴＩＯＮＭＥＴＨＯＤ￥ＷＡＮＧＣｈａｎｇｙｕ；ＺＨＡＯＦｕａｎ（ＩｎＳｔｉｔｕｔｅｏｆＯＲ，Ｑｕ...

关键词： Optimal value function indicator function directional derivative projection gradient algorithm convergence exact penalty function.

POD Nanozyme optimized by charge separation engineering for light/pH activated bacteria catalytic/photodynamic therapy

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Signal Transduction and Targeted Therapy 2022年第4期7卷 1334-1342页

作者： changyu Cao Tingbo Zhang Nan Yang Xianghong Niu zhaobo Zhou Jinlan Wang Dongliang Yang Peng Chen Liping Zhong Xiaochen Dong Yongxiang zhao Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211816China School of Physics Southeast UniversityNanjing 211189China School of Chemical and Biomedical Engineering Nanyang Technological University62 Nanyang DriveSingapore 637459Singapore National Center for International Biotargeting Theranostics Guangxi Key Laboratory of Biotargeting TheranosticsCollaborative Innovation Center for Targeting Tumor TheranosticsGuangxi Medical UniversityNanningGuangxi 530021China

The current feasibility of nanocatalysts in clinical anti-infection therapy,especially for drug-resistant bacteria infection is extremely restrained because of the insufficient reactive oxygen ***,a novel Ag/Bi2MoO6(Ag/BMO)nanozyme optimized by charge separation engineering with photoactivated sustainable peroxidase-mimicking activities and NIR-II photodynamic performance was synthesized by solvothermal reaction and *** Ag/BMO nanozyme held satisfactory bactericidal performance against methicillin-resistant Staphylococcus aureus(MRSA)(~99.9%).The excellent antibacterial performance of Ag/BMO NPs was ascribed to the corporation of peroxidase-like activity,NIR-II photodynamic behavior,and acidity-enhanced release of Ag^(+).As revealed by theoretical calculations,the introduction of Ag to BMO made it easier to separate photo-triggered electronhole pairs for ROS *** the conduction and valence band potentials of Ag/BMO NPs were favorable for the reduction of O_(2) to·O_(2)^(−).Under 1064 nm laser irradiation,the electron transfer to BMO was beneficial to the reversible change of Mo^(5+)/Mo^(6+),further improving the peroxidase-like catalytic activity and NIR-II photodynamic performance based on the Russell *** vivo,the Ag/BMO NPs exhibited promising therapeutic effects towards MRSA-infected *** study enriches the nanozyme research and proves that nanozymes can be rationally optimized by charge separation engineering strategy.

关键词： mechanism. separation charge

High power and stable P-doped yolk-shell structured Si@C anode simultaneously enhancing conductivity and Li^(+)diffusion kinetics

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Nano Research 2021年第4期14卷 1004-1011页

作者： Ming Chen Qinnan Zhou Jiantao Zai Asma Iqbal TsegayeTadesse Tsega Boxu Dong Xuejiao Liu Yuchi Zhang changyu Yan Liang zhao Ali Nazakat SharelPeisan E CheeTongJohn Low Xuefeng Qian Shanghai Electrochemical Energy Devices Research Center School of Chemistry and Chemical Engineering and State Key Laboratory oj Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240China Warwick Electrochemical Engineering Group WMGEnergy Innovation CentreUniversity of WarwickCV47ALUK School of Health&Life Sciences Teesside UniversityMiddlesbroughTS13BXUK

Silicon is a low price and high capacity ancxje material for lithium-ion *** yolk-shell structure can effectively accommodate Si expansion to improve ***,the limited rate performance of Si anodes can't meet people's growing demand for high power ***,the phosphorus-doped yolk-shell Si@C materials(P-doped Si@C)were prepared through carbon coating on P-doped Si/SiO_(x)matrix to obtain high power and stable ***,the as-prepared P-doped Si@C electrodes delivered a rapid increase in Coulombic efficiency from 74.4%to 99.6%after only 6 cycles,high capacity retention of-95%over 800 cycles at 4 A·g^(-1),and great rate capability(510 mAh·g^(-1)at 35 A·g^(-1)).As a result,P-doped Si@C anodes paired with commercial activated carbon and LiFePO_(4)cathode to assemble lithium-ion capacitor(high power density of〜61,080 W·kg^(-1)at 20 A·g^(-1))and lithium-ion full cell(good rate performance with 68.3 mAh·g^(-1)at 5 C),*** work can provide an effective way tofurther improve power density and stability for energy storage devices.

关键词： P-doped yolk-shell structured Si@C anode excellent rate performance long life lithium-ion battery high power full cell

Ultrasensitive strain sensor based on superhydrophobic microcracked conductive TiCT MXene/paper for human-motion monitoring and E-skin

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Science Bulletin 2021年第18期66卷 1849-1857,M0003页

作者： Yibing Bu Taoyu Shen Wenke Yang Shiyin Yang Ye zhao Hu Liu Yanjun Zheng Chuntai Liu changyu Shen Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China

With the rapid development of wearable intelligent devices,low-cost wearable strain sensors with high sensitivity and low detection limit are urgently ***,sensing stability of sensor in wet or corrosive environments should also be considered in practical ***,superhydrophobic microcracked conductive paper-based strain sensor was fabricated by coating conductive Ti_(3)C_(2)T_(x) MXene on printing paper via dip-coating process and followed by depositing superhydrophobic candle soot layer on its *** to the ultrasensitive microcrack structure in the conductive coating layer induced by the mismatch of elastic modulus and thermal expansion coefficient between conductive coating layer and paper substrate during the drying process,the prepared paper-based strain sensor exhibited a high sensitivity(gauge factor,GF=17.4)in the strain range of 0–0.6%,ultralow detection limit(0.1%strain)and good fatigue resistance over 1000 cycles towards bending ***,it was also applicable for torsion deformation detection,showing excellent torsion angle dependent,repeatable and stable sensing ***,it displayed brilliant waterproof,self-cleaning and corrosion-resistant properties due to the existence of micro/nano-structured and the low surface energy candle soot *** a result,the prepared paper-based strain sensor can effectively monitor a series of large-scale and small-scale human motions even under water environment,showing the great promising in practical harsh outdoor ***,it also demonstrated good applicability for spatial strain distribution detection of skin upon body movement when assembled into electronic-skin(E-skin).This study will provide great guidance for the design of next generation wearable strain sensor.

关键词： Paper MXene Microcrack Superhydrophobic Strain sensor

基于cAMP-PKA途径研究茶碱影响核盘菌菌核形成的相关机制

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陕西农业科学 2024年第7期70卷 7-11页

作者：赵帅杨大群马常瑜王一峰白伊玲吕蕊花陕西中医药大学医学技术学院陕西咸阳712046

【目的】菌核在核盘菌生活史中占据核心地位,茶碱可作用于cAMP-PKA途径中的PDEs而影响生物体生长发育,本研究通过外源添加茶碱,研究茶碱对于核盘菌菌核的产生及其通路中相关因子的影响,其结果可为新型杀菌剂的开发提供参考。【方法】首... 详细信息

【目的】菌核在核盘菌生活史中占据核心地位,茶碱可作用于cAMP-PKA途径中的PDEs而影响生物体生长发育,本研究通过外源添加茶碱,研究茶碱对于核盘菌菌核的产生及其通路中相关因子的影响,其结果可为新型杀菌剂的开发提供参考。【方法】首先,通过外源添加不同浓度的茶碱,检测其对核盘菌菌丝生长抑制率及菌核形成情况的影响,其次,通过试剂盒检测茶碱对核盘菌菌丝体内cAMP含量的影响,最后,通过qRT-PCR方法检测外源添加茶碱对于核盘菌cAMP-PKA通路中相关因子的变化。【结果】外源添加终浓度为1~2.5 mmol/L的茶碱,对于核盘菌菌丝生长速率和菌核的形成均有抑制作用,而茶碱终浓度为0.5 mmoI/L对菌丝生长速率几乎没有影响。外源添加的茶碱主要是在菌核原基形成的S4期及菌核成熟的S5阶段提升胞内cAMP含量,而在S1~S3阶段和对照组胞内cAMP含量无差异。茶碱通过抑制PDE2的表达水平使得胞内cAMP含量升高,而下游基因PKA和RAS的表达量也相应减少,外源添加茶碱后ATG8的表达量显著上升。【结论】一定浓度的茶碱对于核盘菌菌丝生长速率和菌核的产生均有抑制作用,外源添加茶碱可通过抑制PDE2的表达而提高胞内cAMP含量,使得下游基因表达量相应减少。

关键词：核盘菌茶碱 cAMP含量菌核形成

计算机导航全膝关节置换术与传统全膝关节置换术的短期疗效观察

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中国中医骨伤科杂志 2024年第2期32卷 25-31页

作者：赵云超李晓明王恒俊周浩郭东辉周婷婷杜长宇河北省沧州中西医结合医院河北沧州061000 河北省中西医结合骨关节病研究重点实验室(筹) 华北理工大学

目的:比较计算机导航系统(Knee3软件,Brainlab公司,德国)全膝关节置换术与传统全膝关节置换术的短期疗效。方法:回顾性研究2020年12月至2022年5月就诊的124例全膝关节置换术患者,随访时间为3个月,全部获得随访。其中传统全膝关节置换术... 详细信息

目的:比较计算机导航系统(Knee3软件,Brainlab公司,德国)全膝关节置换术与传统全膝关节置换术的短期疗效。方法:回顾性研究2020年12月至2022年5月就诊的124例全膝关节置换术患者,随访时间为3个月,全部获得随访。其中传统全膝关节置换术患者63例,计算机辅助导航全膝关节置换术患者61例。记录术前资料,包括性别、年龄、体重指数、血红蛋白浓度(HGB)、髋-膝-踝角、关节活动度、疼痛视觉模拟量表(VAS)评分、牛津膝关节功能评分。记录术中资料,包括麻醉方式、手术时间与术中出血量。记录术后资料,包括血红蛋白浓度、手术并发症VAS评分、膝关节影像学假体角度(α,β,γ,σ)、髋-膝-踝角、关节活动范围及牛津膝关节功能评分。结果:手术时间传统组为(1.62±0.40)h,导航组为(1.97±0.52)h,差异有统计学意义(P<0.05);出血量传统组为(150.32±60.69)mL,导航组为(128.85±57.01)mL,差异有统计学意义(P<0.05);术后第3天VAS评分传统组为(3.63±0.73)分,导航组为(2.98±0.98)分,差异有统计学意义(P<0.05);出院前传统组血红蛋白浓度为(103.44±11.89)g/L,导航组为(108.82±9.38)g/L,差异有统计学意义(P<0.05)。术后3个月随访,α,β,γ,σ,髋-膝-踝角、关节活动范围及牛津膝关节功能评分两组差异有统计学意义(P<0.05)。结论:计算机导航辅助全膝关节置换术降低了术后早期疼痛,减少术中出血量,减轻术后贫血程度,提高假体角度与下肢力线的精准度,但对短期的关节活动度与膝关节功能的改善无明显优势。

关键词：计算机导航全膝关节置换术短期疗效假体角度力线膝关节功能关节活动度

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基于数字样机的飞机研制项目监控技术

北京航空航天大学学报 2014年第2期40卷 198-203页

作者：陈畅宇于勇赵罡北京航空航天大学机械工程及自动化学院北京100191

由于周期漫长、数据繁杂、并发事件多等特点,飞机研制项目需要高效的管理支撑环境.针对这种需求,提出了一种基于数字样机的项目监控方法.该方法首先在项目管理与产品数据管理集成模型的基础上创建一种面向项目监控的数字样机.通过将样... 详细信息

由于周期漫长、数据繁杂、并发事件多等特点,飞机研制项目需要高效的管理支撑环境.针对这种需求,提出了一种基于数字样机的项目监控方法.该方法首先在项目管理与产品数据管理集成模型的基础上创建一种面向项目监控的数字样机.通过将样机模型与任务信息进行绑定,实现多视图的项目监控环境.在进行样机模型可视化时,采用双层载入策略以降低系统显示负载.该方法以对数字样机的可视化与交互为基础,向项目管理人员提供一种支持多层面信息展示的项目监控界面,丰富了项目管理用户与企业信息间的交互方式.

关键词：飞机研制数字样机项目监控信息可视化人机交互

The Simulation of Internal Stresses of Injection Molded Crystalline Polymers during Cooling Stage

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The Simulation of Internal Stresses of Injection Molded Crys...