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A Self-Healing Elastomer with Extremely High Toughness Achieved by Acylsemicarbazide Hydrogen Bonding and Cu^(2+)-Neocuproine Coordination Interactions

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Chinese Journal of Polymer Science 2024年第10期42卷 1425-1434,I0007页

作者： Xiao-Ming An Yi-Ping Wang Tang-song zhu Chong Xing Xu-Dong Jia Qiu-Hong Zhang Key Laboratory of High Performance Polymer Material and Technology of MOE Department of Polymer Science and EngineeringSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210093China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing210093China

Elastomers with high mechanical toughness can guarantee their durability during service ***-healing ability,as well as recyclability,can also extend the life of materials and save the consuming cost of the *** efforts have been dedicated to promoting the mechanical toughness as well as the self-healing capability of elastomers at the same time,while it remains a challenge to balance the trade-off between the above properties in one *** we proposed a molecular design driven by dual interactions of acylsemicarbazide hydrogen bonding and Cu^(2+)-neocuproine coordination *** introducing the reversible multiple hydrogen bonds and strong coordination bonds,we successfully fabricated an extremely tough and self-healing *** elastomer can achieve an impressive top-notch toughness of 491 MJ/m^(3).Furthermore,it boasted rapid elastic restorability within 10 min and outstanding crack tolerance with high fracture energy(152.6kJ/m^(2)).Benefiting from the combination of dynamic interactions,the material was able to self-repair under 80℃conveniently and could be reprocessed to restore the exceptional mechanical properties.

关键词： Metal-ligand coordination Hydrogen bond Ultra-tough elastomer Self-healing

Sodium Sulfite as a Novel Hypoxia Revulsant Involved in Hypoxic Regulation in Escherichia coli

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Biomedical and Environmental Sciences 2024年第2期37卷 228-232页

作者： YE Qiao HUO Jia Nan LUO Yuan MEI zhu song FANG Long Mei GUO Bing Qian WANG Guang Yun Laboratory of clinical medicine Air Force Medical CenterAir Force Medical UniversityBeijing 100142China

As a reducing salt,sodium sulfite could deprive oxygen in solution,which could mimic hypoxic stress in Caenorhabditis *** this study,the wildtype Escherichia coli strain MG1655 was used to examine the inhibition of so... 详细信息

关键词： hypoxic Sodium observing

Interval analysis for neural networks with application to fault detection

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Science China(Information Sciences) 2024年第11期67卷 222-237页

作者： Zhenhua WANG Youdao MA song zhu Thach Ngoc DINH Yi SHEN Department of Control Science and Engineering Harbin Institute of Technology National Key Laboratory of Complex System Control and Intelligent Agent Cooperation School of Mathematics China University of Mining and Technology The CEDRIC-Lab Conservatoire National des Arts et Métiers (CNAM)

This paper investigates an interval analysis method for neural networks and applies it to fault detection for systems with unknown but bounded measurement noise. First, a novel interval analysis method is presented, which can compute the bounds of the output of a feedforward neural network subject to a bounded input. By applying the proposed interval analysis method to a network trained with fault-free system data, adaptive thresholds for fault detection are computed. Finally, one can acquire fault detection results via a fault detection strategy. The proposed method can achieve tight bounds of the network output and employ simple operations, which leads to accurate fault detection results and a low computational burden.A numerical simulation and an experiment on an AC servo motor are given to illustrate the effectiveness and superiority of the proposed method.

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Potassium dehydroandrographolide succinate regulates the MyD88/CDH13 signaling pathway to enhance vascular injuryinduced pathological vascular remodeling

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Chinese Journal of Natural Medicines 2024年第1期22卷 62-74页

作者： GUO Qiru LI Jiali WANG Zheng WU Xiao JIN Zhong zhu song LI Hongfei ZHANG Delai HU Wangming XU Huan YANG Lan SHI Liangqin WANG Yong College of Basic Medicine Chengdu University of Traditional Chinese MedicineChengdu 610000China Chengdu University of Traditional Chinese Medicine Hospital of Chengdu University of Traditional Chinese MedicineChengdu 610000China

Pathological vascular remodeling is a hallmark of various vascular *** research has established the significance of andrographolide in maintaining gastric vascular homeostasis and its pivotal role in modulating endothelial barrier dysfunction,which leads to pathological vascular *** dehydroandrographolide succinate(PDA),a derivative of andrographolide,has been clinically utilized in the treatment of inflammatory diseases precipitated by viral *** study investigates the potential of PDA in regulating pathological vascular *** effect of PDA on vascular remodeling was assessed through the complete ligation of the carotid artery in C57BL/6 *** approaches,including rat aortic primary smooth muscle cell culture,flow cytometry,bromodeoxyuridine(BrdU)incorporation assay,Boyden chamber cell migration assay,spheroid sprouting assay,and Matrigel-based tube formation assay,were employed to evaluate the influence of PDA on the proliferation and motility of smooth muscle cells(SMCs).Molecular docking simulations and co-immunoprecipitation assays were conducted to examine protein *** results revealed that PDA exacerbates vascular injury-induced pathological remodeling,as evidenced by enhanced neointima *** treatment significantly increased the proliferation and migration of *** mechanistic studies disclosed that PDA upregulated myeloid differentiation factor 88(MyD88)expression in SMCs and interacted with T-cadherin(CDH13).This interaction augmented proliferation,migration,and extracellular matrix deposition,culminating in pathological vascular *** findings underscore the critical role of PDA in the regulation of pathological vascular remodeling,mediated through the MyD88/CDH13 signaling pathway.

关键词： Potassium dehydroandrographolide succinate Smooth muscle cell Myeloid differentiation factor 88 T-cadherin Pathological vascular remodeling

Strong nonlinear optical processes with extraordinary polarization anisotropy in inversionsymmetry broken two-dimensional PdPSe

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Light(Science & Applications) 2024年第8期13卷 1524-1533页

作者： song zhu Ruihuan Duan Xiaodong Xu Fangyuan Sun Wenduo Chen Fakun Wang Siyuan Li Ming Ye Xin Zhou Jinluo Cheng Yao Wu Houkun Liang Junichiro Kono Xingji Li Zheng Liu Qi Jie Wang School of Electrical and Electronic Engineering Nanyang Technological University639798 SingaporeSingapore School of Material Science and Engineering Nanyang Technological University639798 SingaporeSingapore CINTRA CNRS/NTU/THALES UMI 3288Research Techno PlazaNanyang Technological University637371 SingaporeSingapore School of Materials Science and Engineering Harbin Institute of Technology150001 HarbinChina Department of Chemistry National University of Singapore117543 SingaporeSingapore GPL Photonics Lab State Key Laboratory of Applied OpticsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences130033 ChangchunChina School of Electronics and Information Engineering Sichuan University610064 ChengduSichuanChina School of Physical and Mathematical Sciences Nanyang Technological University637371 SingaporeSingapore Departments of Electrical and Computer Engineering Physics and Astronomyand Materials Science and NanoEngineeringRice UniversityHoustonTXUSA

Nonlinear optical activities,especially second harmonic generation(SHG),are key phenomena in inversion-symmetrybroken two-dimensional(2D)transition metal dichalcogenides(TMDCs).On the other hand,anisotropic nonlinear optical processes are important for unique applications in nano-nonlinear photonic devices with polarization functions,having become one of focused research topics in the field of nonlinear ***,the strong nonlinearity and strong optical anisotropy do not exist simultaneously in common 2D ***,we demonstrate strong secondorder and third-order susceptibilities of 64 pm/V and 6.2×10^(-19)m^(2)/V^(2),respectively,in the even-layer PdPSe,which has not been discovered in other common TMDCs(e.g.,MoS2).Strikingly,it also simultaneously exhibited strong SHG anisotropy with an anisotropic ratio of~45,which is the largest reported among all 2D materials to date,to the best of our *** addition,the SHG anisotropy ratio can be harnessed from 0.12 to 45(375 times)by varying the excitation wavelength due to the dispersion ofχ^(2)*** an illustrative example,we further demonstrate polarized SHG imaging for potential applications in crystal orientation identification and polarization-dependent spatial *** findings in 2D PdPSe are promising for nonlinear nanophotonic and optoelectronic applications.

关键词： materials. anisotropy nonlinear

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一种多天线地面站的设备级资源调度算法

电讯技术 2024年第9期64卷 1420-1428页

作者：宋竹中国西南电子技术研究所成都610036

针对多天线地面站接收设备共享使用的需求,设计了一种设备级资源调度算法,以充分利用站内设备资源,提高地面站任务能力。首先,分析了多天线地面站资源调度需考虑的各类约束,并建立了各类调度资源和关系模型。然后,将所有卫星接收任务的... 详细信息

针对多天线地面站接收设备共享使用的需求,设计了一种设备级资源调度算法,以充分利用站内设备资源,提高地面站任务能力。首先,分析了多天线地面站资源调度需考虑的各类约束,并建立了各类调度资源和关系模型。然后,将所有卫星接收任务的时间分布抽象为无向图,通过定义边的权重计算任务冲突度。最后,提出了基于优先级和匹配性的概率选择算法,以迭代方式实现调度方案的寻优。仿真结果显示,所提算法的平均调度成功率较优先级算法和遗传算法分别提高了11.9%和6.9%,有效提高了接收设备使用效率。

关键词：多天线地面站资源调度元启发式算法加权无向图

乳清分离蛋白对烘焙预拌粉及其相关食品性质的影响

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中国粮油学报 2024年第5期39卷 86-92页

作者：沙丽丽朱松李玥江南大学食品学院无锡214122 上海华宝生物科技有限公司上海201800 江南大学食品科学与资源挖掘全国重点实验室无锡214122

通过添加不同比例乳清分离蛋白(WPI)制备烘焙预拌粉,研究WPI对预拌粉糊化和流变性质的影响。并进一步将预拌粉制成马芬蛋糕和曲奇饼干,研究其消化、质构及感官性质。结果表明,WPI的添加降低了烘焙预拌粉的峰值黏度、最终黏度、回生值和... 详细信息

通过添加不同比例乳清分离蛋白(WPI)制备烘焙预拌粉,研究WPI对预拌粉糊化和流变性质的影响。并进一步将预拌粉制成马芬蛋糕和曲奇饼干,研究其消化、质构及感官性质。结果表明,WPI的添加降低了烘焙预拌粉的峰值黏度、最终黏度、回生值和衰减值。随着WPI的增加,最终黏度从1038.00 cP降低至417.67 cP,回生值从495.00 cP降低至230.67 cP。随着WPI的添加,预拌粉凝胶的储能模量(G)和损耗模量(G)增加,并使预拌粉的黏性特征增加程度更高。添加WPI烘焙成品中快消化淀粉(RDS)含量显著降低,而抗性淀粉(RS)含量显著上升,WPI的加入抑制了淀粉的消化。并且,WPI对马芬蛋糕消化性的抑制作用高于曲奇饼干。随着WPI的添加,马芬蛋糕的硬度增大,而曲奇饼干则变得更脆。

关键词：烘焙预拌粉乳清蛋白糊化性质流变性质消化性

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防错技术在汽车总装工艺中的应用及提升

农业装备与车辆工程 2024年第8期62卷 68-71页

作者：宋柱湖北轻工职业技术学院机电工程学院湖北武汉430000

防错技术作为各大整车厂在总装工艺过程中的品质保证手段,受到越来越多的重视。通过对总装工艺中各项防错技术的调查,详细阐述了汽车设计阶段和制造阶段2个过程的防错技术。针对整车制造过程中螺栓拧紧类重要工序防错能力不足,提出一种... 详细信息

防错技术作为各大整车厂在总装工艺过程中的品质保证手段,受到越来越多的重视。通过对总装工艺中各项防错技术的调查,详细阐述了汽车设计阶段和制造阶段2个过程的防错技术。针对整车制造过程中螺栓拧紧类重要工序防错能力不足,提出一种双防错品质保证(Quality Assurance,QA)系统,在原QA系统仅对螺栓扭力值防错的基础上,增加对螺栓拧紧角度的防错。数据表明,在引入双防错QA系统后,螺栓拧紧类作业的品质不良削减了约82.6%,大大提升了整车生产品质。

关键词：汽车制造整车品质防错技术品质保证总装工艺

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基于激光数据的黄灯时刻驾驶员行为决策研究

农业装备与车辆工程 2024年第9期62卷 168-171页

作者：宋柱湖北轻工职业技术学院机电工程学院湖北武汉430000

由于闯黄灯导致的交通事故屡见不鲜且后果严重,研究黄灯时刻驾驶人的行为决策意义重大。利用激光雷达和摄像机采集在交叉口遇黄灯时的车辆动态数据,选取影响驾驶人决策的3个显著性因素——瞬时车速、与停车线距离和到达时间,建立二分类L... 详细信息

由于闯黄灯导致的交通事故屡见不鲜且后果严重,研究黄灯时刻驾驶人的行为决策意义重大。利用激光雷达和摄像机采集在交叉口遇黄灯时的车辆动态数据,选取影响驾驶人决策的3个显著性因素——瞬时车速、与停车线距离和到达时间,建立二分类Logistic驾驶员行为决策模型,并验证模型的拟合度,基于研究结果提出降低驾驶员闯黄灯概率的辅助决策措施。

关键词：闯黄灯激光雷达 Logistic模型辅助对策