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Chinese Chemical Letters 2017年第2期28卷 302-306页

作者： Rui Yu Cheng-Fa Jiang Wei Chu mao-fei ran Wen-Jing Sun Department of Chemical Engineering Sichuan University Chengdu 610065 China China-America Cancer Research Institute Key Laboratory for Medical Molecular Diagnostics of Guangdong Province Guangdong Medical University Dongguan 523808 China College of Chemistry & Environment Protection Engineering Southwest University for Nationalities Chengdu 610041 China

The decoration of CNTs surface by magnetic nanoparticles was achieved by an ultrasonication-assisted hydrothermal method（UAHM）.The effect of ultrasonication time on the crystal structure,magnetic performance,and chemical composition of the magnetic CNT composite material was determined.X-ray diffraction（XRD）,Fourier transform infrared spectroscopy（FTIR）,transmission electron microscopy（TEM）,and vibrating sample magnetometry were used to characterize the physical,chemical,and magnetic properties of the *** composites synthesized via the UAHM exhibited superparamagnetic *** ultrasonication time was a critical factor that affected the structure and magnetic performance of the *** simply controlling the ultrasonication time,the crystal phase structure of Fe oxide could be selectively modulated and the magnetic performance of the MCs could be effectively tuned.

关键词： CNTs/Fe3O4 Superparamagnetism Ultrasonication treatment Nanocomposite

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转盘轴承小曲率半径沟道感应加热器的改进

轴承 2013年第12期 27-28页

作者：李省伟冯辉马聪徐俊毛斐然洛阳轴研科技股份有限公司河南洛阳471039

分析了转盘轴承小曲率半径沟道(R<10 mm)中频感应淬火中各常用仿形感应器存在的弊端,在R形感应器的基础上,优化设计了一种新感应器,其具有传统R,J形感应器的优点,采用此感应器进行沟道淬火,便于观察和实时调整,沟道加热区域受热均匀,沟... 详细信息

分析了转盘轴承小曲率半径沟道(R<10 mm)中频感应淬火中各常用仿形感应器存在的弊端,在R形感应器的基础上,优化设计了一种新感应器,其具有传统R,J形感应器的优点,采用此感应器进行沟道淬火,便于观察和实时调整,沟道加热区域受热均匀,沟道淬火合格率达99%以上。

关键词：转盘轴承中频感应淬火感应器小曲率沟道结构改进

Intelligent interaction system based on multimodal conformal triboelectric nanogenerator patch for disabled sports and life

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Science China Technological Sciences 2025年

作者： Yuzhang WEN Mengqi ZHANG Zhenning XIE Zida AN Bing LIU Fengxin SUN Tianming ZHAO Zuojun YU fei WANG Yupeng mao Physical Education Department Northeastern University(Shenyang) Faculty of Robot Science and Engineering Northeastern University Criminal Investigation Police University of China State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences China Ice Sports College Beijing Sport University

Intelligent interaction technology based on advanced sensing units has become a research hotspot. In this paper, an intelligent interaction system (IIS) based on a multimodal conformal triboelectric nanogenerator patch (MCTP) is reported for sports monitoring and life promotion of the disabled. This IIS consists of a cloud-based smart sports recognition program and a smart life application. The porous micro-reinforced structure of polyurethane (PU) Sponge&Ecoflex, and the surface modification of PTFE by coating it with MXene endows the MCTP with excellent electrical properties. It shows good angle and force sensitivities of 1.1 V/°and 1.61 V/N, respectively, and has an ultra-fast response time of 15 ms, meeting the needs of human motion monitoring. The MCTP can also capture the mechanical energy, producing a maximum output power of 139μ*** with the commercial inertial measuring unit (IMU), the MCTP shows better consistency in human joint angle sensing. A precise analysis of wheelchair curling sports monitoring points is achieved by combining the MCTP and the human anatomy model. The cloud-based smart sports recognition program utilizes machine learning to achieve visual feedback on the three throwing technologies of draw, takeout and clearing. In addition, the developed smart life application uses a highsensitivity MCTP-sensor array design to achieve a variety of smart home interactions through simple finger touches. Overall,the IIS integrates the three major functions of smart sports sensing, energy capture, and smart home control, providing important application prospects in the fields of smart sports and human-computer interaction for the disabled.

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Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang Hong-Yu Tang Chun-mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-fei Xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

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盾构用大型向心关节轴承径向游隙的测量方法

建筑机械 2022年第10期42卷 87-88页

作者：毛斐然赵雁王雅梦张致远渠书文洛阳轴承研究所有限公司河南洛阳471039

由于盾构大型向心关节轴承体积、重量较大,其球面径向游隙无法像常规向心关节轴承球面径向游隙直接测量获得。本文介绍了盾构向心关节轴承球面径向游隙的测量方法,以供制造厂家参考。

关键词：盾构大型向心关节轴承球面径向游隙测量

Role of oxygen vacancy inducer for graphene in graphene-containing anodes

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Frontiers of Chemical Science and Engineering 2023年第3期17卷 326-333页

作者： fei Wang Jian mao College of Materials Science and Engineering Sichuan UniversityChengdu 610065China

Currently,graphene is only considered as a conductive additive and expansion inhibitor in oxides/graphene composite *** this study,a new graphene role(oxygen vacancy inducer)in graphene/oxides composites anodes,which are treated at high-temperature,is proposed and verified using experiments and density functional theory *** high-temperature processing,graphene forms carbon vacancies due to increased thermal vibration,and the carbon vacancies capture oxygen atoms,facilitating the formation of oxygen vacancies in ***,the induced oxygen vacancy concentrations can be regulated by sintering temperatures,and the behavior is unaffected by oxide crystal structures(crystalline and amorphous)and morphology(size and shape).According to density functional theory calculations and electrochemical measurements,the oxygen vacancies enhance the lithiumion storage *** findings can result in a better understanding of graphene’s roles in graphene/oxide composite anodes,and provide a new method for designing high-performance oxide anodes.

关键词： oxide oxygen vacancy graphene anode density functional theory calculation

Multimodal treatment for spinal cord injury: a sword of neuroregeneration upon neuromodulation

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Neural Regeneration Research 2020年第8期15卷 1437-1450页

作者： Ya Zheng Ye-ran mao Ti-fei Yuan Dong-Sheng Xu Li-Ming Cheng Rehabilitation Section Spine Surgery Division of Department of OrthopedicsTongji Hospital Affiliated to Tongji University School of MedicineShanghaiChina Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education of the People’s Republic of China Tongji UniversityShanghaiChina Spine Surgery Division of Department of Orthopedics Tongji Hospital Affiliated to Tongji University School of MedicineShanghaiChina

Spinal cord injury is linked to the interruption of neural pathways,which results in irreversible neural *** repair and neuroregeneration are critical goals and issues for rehabilitation in spinal cord injury,which require neural stem cell repair and multimodal neuromodulation techniques involving personalized rehabilitation *** the involvement of endogenous stem cells in neurogenesis and neural repair,exogenous neural stem cell transplantation is an emerging effective method for repairing and replacing damaged tissues in central nervous system ***,to ensure that endogenous or exogenous neural stem cells truly participate in neural repair following spinal cord injury,appropriate interventional measures(e.g.,neuromodulation)should be *** techniques,such as noninvasive magnetic stimulation and electrical stimulation,have been safely applied in many neuropsychiatric *** is increasing evidence to suggest that neuromagnetic/electrical modulation promotes neuroregeneration and neural repair by affecting signaling in the nervous system;namely,by exciting,inhibiting,or regulating neuronal and neural network activities to improve motor function and motor learning following spinal cord *** studies have indicated that fine motor skill rehabilitation training makes use of residual nerve fibers for collateral growth,encourages the formation of new synaptic connections to promote neural plasticity,and improves motor function recovery in patients with spinal cord *** the development of biomaterial technology and biomechanical engineering,several emerging treatments have been developed,such as robots,brain-computer interfaces,and *** treatments have the potential to help millions of patients suffering from motor dysfunction caused by spinal cord ***,large-scale clinical trials need to be conducted to validate their *** review evaluated the efficacy of ne

关键词： brain-computer interface technology multimodal rehabilitation nerve regeneration neural circuit reconstruction neural regeneration neuromodulation rehabilitation training spinal cord injury stem cells transcranial direct current stimulation transcranial magnetic stimulation

日粮中添加枯草芽孢杆菌对高氧气调包装猪肉蛋白质和脂质氧化的影响

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食品科学 2025年第1期46卷 142-148页

作者：张悦于江刘飞张玉玉张一敏毛衍伟山东农业大学食品科学与工程学院山东泰安271018 山东省农业科学院畜牧兽医研究所农业农村部畜禽生物组学重点实验室山东济南250100

为探究日粮添加枯草芽孢杆菌对猪肉抗氧化能力以及高氧气调包装贮藏期间猪肉肉色、蛋白质氧化、脂质氧化和感官品质的影响,选取对照组(只饲喂基础日粮)和处理组(基础日粮添加枯草芽孢杆菌)的三元杂交(杜洛克×长白×大约克)猪各6只,屠... 详细信息

为探究日粮添加枯草芽孢杆菌对猪肉抗氧化能力以及高氧气调包装贮藏期间猪肉肉色、蛋白质氧化、脂质氧化和感官品质的影响,选取对照组(只饲喂基础日粮)和处理组(基础日粮添加枯草芽孢杆菌)的三元杂交(杜洛克×长白×大约克)猪各6只,屠宰后取背最长肌测定抗氧化酶活性,其余背最长肌样品进行高氧气调包装,4℃冷库贮藏,分别在0、5、10、15、20?d测定肉色、丙二醛(malondialdehyde,MDA)、羰基和巯基含量,并进行感官评价。结果表明:与对照组相比,处理组能够显著提高超氧化物歧化酶、谷胱甘肽过氧化物酶和过氧化氢酶活性(P<0.05),增强猪肉的抗氧化能力;日粮中添加枯草芽孢杆菌可以显著改善高氧气调包装猪肉的肉色(P<0.05);在低温贮藏期间,处理组能够显著降低MDA含量(P<0.05),抑制高氧气调包装猪肉的脂肪氧化;日粮中添加枯草芽孢杆菌能够显著抑制高氧气调包装猪肉的蛋白质氧化、羰基的生成和巯基损失(P<0.05),同时显著提高猪肉打开包装前的颜色和打开包装后的总体喜爱度评分(P<0.05)。综上,在日粮中添加枯草芽孢杆菌可提高猪肉的抗氧化能力、改善猪肉在高氧气调包装中的肉色、抑制蛋白质和脂质氧化,提高猪肉的食用品质。

关键词：枯草芽孢杆菌猪肉抗氧化能力脂质氧化蛋白质氧化

Boundedness and stability of highly nonlinear hybrid neutral stochastic systems with multiple delays

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Science China(Information Sciences) 2019年第10期62卷 133-148页

作者： Mingxuan SHEN Chen fei Weiyin fei Xuerong mao School of Science Nanjing University of Science and Technology School of Mathematics and Physics Anhui Polytechnic University Glorious Sun School of Business and Management Donghua University Department of Mathematics and Statistics University of Strathclyde

This paper reports the boundedness and stability of highly nonlinear hybrid neutral stochastic differential delay equations(NSDDEs) with multiple delays. Without imposing linear growth condition, the boundedness and exponential stability of the exact solution are investigated by Lyapunov functional *** particular, using the M-matrix technique, the mean square exponential stability is obtained. Finally, three examples are presented to verify our results.

关键词： hybrid delay systems neutral stochastic systems multiple delays highly nonlinear

Hand-eye calibration with a new linear decomposition algorithm

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第10期9卷 1363-1368页

作者： Rong-hua LIANG Jian-fei mao College of Information Engineering Zhejiang University of Technology Hangzhou 310032 China

To solve the homogeneous transformation equation of the form AX=XB in hand-eye calibration, where X represents an unknown transformation from the camera to the robot hand, and A and B denote the known movement transformations associated with the robot hand and the camera, respectively, this paper introduces a new linear decomposition algorithm which consists of singular value decomposition followed by the estimation of the optimal rotation matrix and the least squares equation to solve the rotation matrix of X. Without the requirements of traditional methods that A and B be rigid transformations with the same rotation angle, it enables the extension to non-rigid transformations for A and B. The details of our method are given, together with a short discussion of experimental results, showing that more precision and robustness can be achieved.

关键词： Homogeneous transformation equation Singular value decomposition (SVD) Optimal rotation matrix Rigid transformations