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Multi-color mechano-luminescence of LaGaO_(3):Sm^(3+),Tb^(3+) via trap sharing for anti-counterfeiting and encryption

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Journal of Rare Earths 2023年第12期41卷 1869-1875,I0002页

作者： Ziyang Li Yajing Yan Ting Wang Shaoqing Wang Longchao Guo Wei feng Lei zhao Ziqi Wang feng zhao Jiaqi Chen Zhanhui Zhang Xuhui Xu xue Yu School of Mechanical Engineering Institute for Advanced MaterialsChengdu UniversityChengdu610106China Clinical Medical College&Affiliated Hospital of Chengdu University Chengdu610106China College of Materials and Chemistry&Chemical Engineering Chengdu University of TechnologyChengdu610059China College of Materials Science and Engineering Baoji University of Arts and SciencesBaoji721013China Key Laboratory of Plasma Chemistry and Advanced Materials of Hubei Province Wuhan Institute of TechnologyWuhan430205China College of Materials Science and Engineering Kunming University of Science and TechnologyKunming650093China

Mechano-luminescence(ML) has been found diverse applications such as stress sensing,3-D signature,energy harvesting,and anti-counterfeiting,due to the unique properties of the corresponding ML phosphors performing in-situ and real-time response to mechanical ***-controlled ML materials realize reproducible,quantitative mechano-optical conversion resulting from the released carriers for the trap-mediated charge storage and ***,modulating traps matters the controllable ML behavior for their promising *** this work,a deep trap distributed ranging from 0.9 to 1,3 eV is realized consecutively for the introduction of Sm^(3+)ions into LaGaO_(3) matrix,which contributes to the red emission at 600 nm under mechanical ***,tunable ML emission modulated from 600to 545 nm is successfully achieved for the codopant of Tb^(3+)*** is unambiguously indicated that the released carriers from the trap sharing rather than an additional constructed trap contribute to the modulated ML ***,multi-mode anti-counterfeiting and encryption are achieved with the as-explored Sm^(3+),Tb^(3+)co-activated ML phosphor.

关键词： LaGaO_(3):Sm^(3+) Tb^(3+)phosphors Mechano-luminescence Trap sharing Multi-color Rare earths

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High-temperature properties and microstructure of Mo microalloyed ultra-high-strength steel

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International Journal of Minerals,Metallurgy and Materials 2011年第4期18卷 407-412页

作者： Qi-hang Han Yong-lin Kang Xian-meng zhao Lu-feng Gao xue-song Qiu School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

The high-temperature mechanical properties and microstructure of forging billets of C-Si-Mn-Cr and C-Si-Mn-Cr-Mo ultra-high-strength cold-rolled steels（tensile strength≥1000 MPa,elongation≥10%） were *** the comparison of reduction in area and hot deformation resistance at 600-1300°C,the Mo-containing steel was found to possess a higher strength and a better plasticity than the Mo-free *** equilibrium phase diagram and atom fraction of Mo in different phases at different temperatures were calculated by Thermo-Calc software（TCW）.The results analyzed by using transmission electron microscopy and TCW show that precipitates in the Mo-containing steel are primarily M23C6,which promote pearlite *** experimental data also show that a lower ductility point existing in the Mo-free steel at 850°C is eliminated in the Mo-containing *** is mainly due to the segregation of Mo at grain boundaries investigated by electron probe microanalysis（EPMA）,which improves the strength of grain boundaries.

关键词： high strength steels high temperature properties microstructure molybdenum thermodynamics

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Phase composition and magnetic properties of Pr-Nd-MM-Fe-B nanocrystalline magnets prepared by spark plasma sintering

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Rare Metals 2020年第1期39卷 36-40页

作者： Xin Wang Zeng-Ru zhao Fei Liu Yan-Li Liu Gao-feng Wang Ming-Gang Zhu xue-feng Zhang Division of Functional Materials Central Iron and Steel Research InstituteBeijing100081China School of Science Inner Mongolia University of Science and TechnologyBaotou014010China Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou014010China

The isotropic nanocrystalline[(PrNd)0.8MM0.2]29.8Fe68.7Al0.1Cu0.12Co0.88B magnets(MM:mischmetal)were prepared by single-main phase and double-main phase methods using spark plasma sintering(SPS).Melt-spinning method was used to prepare initial powder and avoid component deviations caused by longtime ball *** magnetic properties of the magnet prepared by double-main phase method(called double-main phase magnet,DMP magnet)are remanence of Br=0.75 T,intrinsic coercivity of Hcj=909.83 kA·m-1,maximum magnetic energy product of(BH)max=95.48 kJ·m-3,which are better than those of the magnet prepared by single-main phase method(called singlemain phase magnet,SMP magnet).The diffraction peaks of the main phase of DMP magnet split in X-ray diffractometer(XRD)pattern,indicating that R2 Fe14B phases with different distributions of La/Ce elements exist in the *** speculation is confirmed by transmission electron microscopy(TEM)*** La/Ce-rich main phase and La/Celean main phase are present in DMP *** heterogeneity of rare earth elements suppresses the magnetic dilution effect in DMP magnet,and the magnetic properties are *** the DMP magnet contains different main phases,it presents unitary Curie temperature(TC)of 577 K,which is higher than that of SMP *** result suggests that the TC of the magnets can be promoted by double-main phase method and SPS.

关键词： Mischmetal Double-main phase Spark plasma sintering Magnetic properties Microstructure

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薯蓣皂苷元通过自噬降解Tau蛋白发挥神经保护作用

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中国临床药理学杂志 2021年第17期37卷 2290-2294页

作者：张瑜伊力亚斯·艾萨雷秀英陈倩西仁阿依·西热甫冯学召席庆袁芳新疆医科大学基础医学院生物学教研室新疆乌鲁木齐830011 新疆医科大学基础医学院生物化学与分子生物学教研室新疆乌鲁木齐830011

目的研究小分子药物薯蓣皂苷元(DG)降解Tau蛋白的作用机制。方法(1)将SH-SY5Y细胞分组为6组:对照组和5个浓度(5,10,15,20,25μg·mL^(-1))DG组,用DG处理24 h,MTT方法和平板克隆形成实验检测DG的毒性作用,依据毒性结果选择15μg·mL^(-1... 详细信息

目的研究小分子药物薯蓣皂苷元(DG)降解Tau蛋白的作用机制。方法(1)将SH-SY5Y细胞分组为6组:对照组和5个浓度(5,10,15,20,25μg·mL^(-1))DG组,用DG处理24 h,MTT方法和平板克隆形成实验检测DG的毒性作用,依据毒性结果选择15μg·mL^(-1)DG进行以下实验。(2)用15μg·mL^(-1)DG组处理稳定表达GFP-LC3的NRK细胞12 h,激光共聚焦显微镜检测对照组、饥饿组、雷帕霉素组和DG组的自噬体数目,饥饿组为阳性1组。蛋白质印迹法检测对照组、雷帕霉素组、DG组的选择性自噬接头蛋白(p62)和微管相关蛋白轻链3(LC3)-II蛋白量,雷帕霉素组为阳性2组。(3)稳定表达Tau-GFP蛋白的HEK293细胞分为4组:对照组、强力霉素组(200 ng·mL^(-1)DOX)、联合1组(200 ng·mL^(-1)DOX+15μg·mL^(-1)DG)和联合2组(DOX+DG+氯喹10 nmoL),强力霉素组为模型组,通过激光共聚焦显微镜检测各组Tau-GFP蛋白荧光强度,蛋白质印迹法检测Tau-GFP和LC3-II蛋白表达。结果(1)对照组和由低到高5个浓度DG组细胞存活率分别为(100.00±1.31)%,(102.25±0.62)%,(101.14±0.20)%,(103.32±1.40)%,(100.32±0.15)%和(100.36±2.98)%,DG各组与对照组比较无明显差异。15μg·mL^(-1)DG组对SH-SY5Y细胞活力没有影响。(2)稳定表达GFP-LC3的NRK细胞中,对照组、阳性1组和DG组自噬体数目为1.00±0.00,4.33±0.58和6.33±0.58。NRK细胞中,对照组、阳性2组、DG组p62蛋白相对表达量为0.97±0.03,0.39±0.03和0.60±0.05;LC3-II蛋白相对表达量为0.65±0.04,1.06±0.11和1.11±0.11。SH-SY5Y细胞中,对照组、阳性2组、DG组的p62蛋白相对表达量为1.47±0.22,0.91±0.10和0.85±0.05;LC3-II蛋白相对表达量为0.73±0.09,0.93±0.35和1.30±0.25。(3)HEK293细胞中,对照组、模型组、联合1组、联合2组中Tau-GFP蛋白相对表达量为0.66±0.28,1.58±0.06,1.18±0.12和1.63±0.15;LC3-II蛋白相对表达量为0.38±0.05,0.53±0.05,0.70±0.02和1.50±0.13。上述指标:对照组与DG组比较或与模型组比较,或对照组与联合1组比较或与联合2组比较,联合1组与模型组比较或与联合2组比较。差异均有统计学意义(均P<0.05)。结论DG能够降解Tau蛋白,进而发挥神经保护作用,其机制或许是通过诱导细胞发生自噬达成的。

关键词：薯蓣皂苷元自噬阿尔茨海默病微管相关蛋白强力霉素

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Adaptive Control of a Flexible Manipulator With Unknown Hysteresis and Intermittent Actuator Faults

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 148-158页

作者： Shouyan Chen Weitian He Zhijia zhao Yun feng Zhijie Liu Keum-Shik Hong School of Mechanical and Electrical Engineering Guangzhou University the School of Control Science and Engineering Shandong University IEEE the College of Electrical and Information Engineering Hunan University the National Engineering Research Center for Robot Visual Perception and Control Technology Hunan University the School of Intelligence Science and Technology University of Science and Technology Beijing (USTB) the Institute for Future the School of AutomationQingdao University the School of Mechanical Engineering Pusan National University

In this study, we consider a single-link flexible manipulator in the presence of an unknown Bouc-Wen type of hysteresis and intermittent actuator faults. First, an inverse hysteresis dynamics model is introduced, and then the control input is divided into an expected input and an error compensator. Second,a novel adaptive neural network-based control scheme is proposed to cancel the unknown input hysteresis. Subsequently,by modifying the adaptive laws and local control laws, a fault-tolerant control strategy is applied to address uncertain intermittent actuator faults in a flexible manipulator system. Through the direct Lyapunov theory, the proposed scheme allows the state errors to asymptotically converge to a specified interval. Finally,the effectiveness of the proposed scheme is verified through numerical simulations and experiments.

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Effect of leaf removal on photosynthetically active radiation distribution in maize canopy and stalk strength

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Journal of Integrative Agriculture 2017年第1期16卷 85-96页

作者： xue Jun GOU Ling SHI Zhi-guo zhao Ying-shan ZHANG Wang-feng Key Laboratory of Oasis Eco-Agriculture Xinjiang Production and Construction Group/Agricultural College Shihezi University Shihezi 832000 P.R. China

The objectives of this study were to determine how the distribution of photosynthetically active radiation （PAR） in a maize canopy affected basal internode strength and stalk lodging. The distributions of PAR within the canopies of two maize cultivars （Zhongdan 909 and Xinyu 41） were altered by removing whole leaves or half leaves in different canopy layers. The results showed that removing whole leaves or half leaves above the three-ear-leaves （RAE and RAE/2） at flowering sig- nificantly increased. PAR at the ear and interception of PAR （IPAR） from the ear to middle of the ear and soil surface. These changes increased the structural carbohydrate content and rind penetration strength （RPS） of the third basal internode by 5.4-11.6% and reduced lodging by 4.2-7.8%. Removal of the first three leaves below the three-ear-leaves （RBE） before flowering significantly reduced IPAR from the ear to half way below the ear. This reduced the structural carbohydrate con- tent and the RPS of the third basal internode by 9.1-17.4% and increased lodging by 7.0-11.2%. Removal of the three lowest green leaves （RB） in the canopy before flowering increased PAR at the bottom of the canopy, but had no effect on the structural carbohydrate content of the basal internode, the RPS, and the lodging rate. Overall, the results indicated that the key factors affecting the basal internode strength formation and lodging were PAR at the ear and IPAR from the ear to halfway below the ear. Increasing PAR at the ear and IPAR from the ear to halfway below the ear could enhance lodging resistance by increasing the structural carbohydrate content and mechanical strength of the basal internode.

关键词： maize leaf removal light distribution stalk strength lodging resistance

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Quinacrine pretreatment reduces microwave-induced neuronal damage by stabilizing the cell membrane

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Neural Regeneration Research 2018年第3期13卷 449-455页

作者： xue-feng Ding Yan Wu Wen-rui Qu Ming Fan Yong-qi zhao Department of Cognitive Sciences Beijing Institute of Basic Medical Sciences Hand & Foot Surgery and Reparative & Reconstructive Surgery Center Orthopedic Hospital of the Second Hospital of Jilin University

Quinacrine, widely used to treat parasitic diseases, binds to cell membranes. We previously found that quinacrine pretreatment reduced microwave radiation damage in rat hippocampal neurons, but the molecular mechanism remains poorly understood. Considering the thermal effects of microwave radiation and the protective effects of quinacrine on heat damage in cells, we hypothesized that quinacrine would prevent microwave radiation damage to cells in a mechanism associated with cell membrane stability. To test this, we used retinoic acid to induce PC12 cells to differentiate into neuron-like cells. We then pretreated the neurons with quinacrine （20 and 40 mM） and irradiated them with 50 mW/cm^2 microwaves for 3 or 6 hours. Flow cytometry, atomic force microscopy and western blot assays revealed that irradiated cells pretreated with quinacrine showed markedly less apoptosis, necrosis, and membrane damage, and greater expression of heat shock protein 70, than cells exposed to microwave irradiation alone. These results suggest that quinacrine stabilizes the neuronal membrane structure by upregulating the expression of heat shock protein 70, thus reducing neuronal injury caused by microwave radiation.

关键词： nerve regeneration quinacrine microwave irradiation heat shock cell apoptosis cell necrosis thermal effect cell membrane heat shock protein 70 nerve cells neural regeneration

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Synergistic effect from coaxially integrated CNTs@MoS_(2)/MoO_(2) composite enables fast and stable lithium storage

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Journal of Energy Chemistry 2021年第4期30卷 449-458页

作者： Hui Lu Kai Tian Liangmin Bu xue Huang Xiangyi Li Yue zhao feng Wang Jianming Bai Lijun Gao Jianqing zhao College of Energy Soochow Institute for Energy and Materials InnovationSSoochow UniversitySuzhou 215006JiangsuChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhou 215006JiangsuChina Sustainable Energy Technologies Department Brookhaven National LaboratoryUpton 11973NYUnited States National Synchrotron Light Source II Brookhaven National LaboratoryUpton 11973NYUnited States

Molybdenum oxide/sulfide materials are extensively evaluated as high-capacity anode candidates for lithium ion ***,they suffer from rapid capacity decay and poor ***,we report on synergistic effect from structurally integrated coaxial CNTs@MoS_(2)/MoO_(2) composite material on lithium storage,in which MoS_(2)/MoO_(2) nanosheets are conformally decorated on carbon nanotubes(CNTs).In-situ synchrotron X-ray diffraction measurement is performed to elucidate synergistic effect among three MoS_(2),MoO_(2) and CNTs components for lithium *** mechanism exploration reveals that the MoO_(2) component undergoes reversible Li^(+)intercalation via forming a stable Li_(0.98) MoO_(2) phase over a voltage range of 3.0 to 0.01 V ***^(+)/Li,without experiencing the conversion reaction into metallic Mo,which contributes to long-term stability during charge/discharge ***,lithium storage of MoS_(2) is through lithium and sulfur reversible reaction after the initial conversion reaction of lithiated MoS_(2) forming Li_(2)S and *** CNTs component enhances electronic conductivity and structural stability by minimizing volume change and reaction strains in the CNTs@MoS_(2)/MoO_(2) composite anode.A desired 68.2%capacity retention upon 2000 cycles at 10 A/g has been demonstrated for the CNTs@MoS_(2)/MoO_(2) anode,revealing prominent reaction kinetics and structural stability for fast and stable lithium storage,superior to various Mo-based anode materials previously *** findings from this study,with the unique insight into the role of structural integrity in combining MoS_(2)/MoO_(2) materials with the CNTs substrate,offers a strategy for designing composite anode materials for superior lithium storage performance.

关键词： MoS_(2)/MoO_(2) CNTs Synergistic effect Anode material Lithium storage

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Fatigue Damage Mechanism of Oil Film Bearing Sleeve

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Journal of Iron and Steel Research International 2007年第1期14卷 60-63,68页

作者： HUANG Qing-xue WANG Jian-mei MA Li-feng zhao Chun-jiang School of Mechanical and Electrical Engineering Taiyuan University of Science and Technology Taiyuan 030024 Shanxi China School of Mechanical Design and Automation Taiyuan University of Technology Taiyuan 030024 Shanxi China

With the rapid development of the steel industry, to keep pace with the current trend of high speed, continuous, and large-scale production that focuses on automation and high levels of efficiency, many state-owned steel companies are being equipped with oil film bearings. Through long-term on-spot inspection and research on the fatigue failure of oil film bearing, three segments of annulated fatigue breakage were found axially along the inner surface of the bearing sleeve. In order to elucidate the reason for the three-segment annulated damage under rolling load, numerical boundary element method was adopted to analyze the contact behaviors between the sleeve and rollneck. Failure mechanism was discussed in detail, the distributions of contact stress were analyzed, and the service lives of the sleeve for different positions on the inner surface were quantitatively described, which provided an effective means to decrease wear and adhesive damage of the sleeve and to increase the load capacity of oil film bearing and its service life as well.

关键词： oil film bearing fatigue failure analysis contact problem bearing life

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Buster Die Shape Design of a Track Link Forging Using FEM Based Back-Tracing Method

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Journal of Materials Science & Technology 2001年第1期17卷 139-140页

作者： Guoqun zhao xue DENG Mold&Die Engineer Technology Research Center Shandong University of TechnologyJinan 250061China

For the preform design of a complex track link forging, fifteen critical sections were selected for two dimensional back-tracing using FEM. The preform shapes of the critical sections are designed and integrated into an ideal 3D busting shape. The buster dies are finally designed according to the ideal busting shape with a little of modification. The 3D simulation of the busting stage is carried out.

关键词： two dimensional preform design

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