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Recent advances in flexible self-oscillating actuators

eScience 2024年第5期4卷 91-109页

作者： Jingjing Li Wenjin Guo Weiqiang Zhao Yutian Zhu Jie Bai Zhigang Xia Xiang Zhou Zunfeng Liu School of Textile Science and Engineering State Key Laboratory of New Textile Materials and Advanced Processing TechnologiesWuhan Textile UniversityWuhan 430200China State Key Laboratory of Medicinal Chemical Biology Key Laboratory of Functional Polymer MaterialsTianjin Key Laboratory of Functional Polymer MaterialsSmart Sensing Interdisciplinary Science CenterCollege of ChemistryNankai UniversityTianjin 300350China College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationKey Laboratory of Organosilicon Material TechnologyHangzhou Normal UniversityHangzhou 311121China College of Chemistry and Chemical Engineering Inner Mongolia Univ TechnolChem Engn CollHohhot 010051China Department of Science China Pharmaceutical UniversityNanjing 211198China

Soft actuators are constituted by a type of intelligent materials,and they can generate reversible mechanical motions under external *** usually achieve continuous actuation by manual turning on or off the power supply,which significantly increases the operation *** contrast,self-oscillating actuators can achieve autonomous motions under constant stimuli,and have recently attained great advancements,as well as promoted the development of autonomous soft *** this review,the latest achievements of soft oscillators are ***,the self-oscillating mechanisms mainly including oscillating chemical reactions and self-shadowing-induced mechanical negative feedback loops are *** oscillators constructed with various materials and configurations,driven by different stimuli and applied in different fields are then presented in ***,the difficulties and hopes of oscillators are ***,self-oscillating actuators are in the stage of vigorous development,and we believe that in the future,they will be used in various fields and make many scenarios more intelligent and autonomous.

关键词： Oscillating actuator Artificial muscles Polymer composite Biomimetic Smart materials

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Comparative Analysis on Microstructure and Mechanical Properties between EBW and TANDEM Welding of 7A52 Aluminum Alloy Joint

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稀有金属材料与工程 2011年第S4期40卷 68-73页

作者： Zhai Xiwei1,2,Chen Furong1,2,Bi Liangyan1,2,Zhang Chuanchen3 1College of Materials Science and Engineering,inner mongolia university of technology,Hohhot 010051,China2Key Laboratory of Materials Processing & Control Engineering of inner mongolia Autonomous Region,Hohhot 010051,China3School of Materials Science and Engineering,university of Science and technology Beijing,Beijing 100083,China inner mongolia univ technol Coll Mat Sci & Engn Hohhot 010051 Peoples R China Key Lab Mat Proc & Control Engn inner mongolia Au Hohhot 010051 Peoples R China univ Sci & technol Beijing Sch Mat Sci & Engn Beijing 100083 Peoples R China

The plates with 20mm thickness of 7A52 aluminum alloy were welded by electron beam welding and TANDEM welding with ER5356 filler,*** microstructure and mechanical properties of the joints were *** results showed that the microstructure of EBW metal was finer and tighter than TANDEM *** heat-affected zone of the EBW joint was narrower,its hardness was higher and the tensile strength improved obviously compared to TANDEM *** quality control of the EBW joint was made without abnormal porosity,inclusions and ***,the EBW joint of 7A52 aluminum alloy showed excellent performance.

关键词： 7A52 aluminum alloy electron beam welding TANDEM welding microstructure mechanical properties

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Effects of Mg on Mechanical Properties of 35CrNi3MoV Steel

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Journal of Materials Science & technology 1998年第2期14卷 104-108页

作者： Yu, Yueguang Fu, Jie Wang, Anren Chen, Boping Sun, Wenshan univ Sci & technol Beijing Beijing 100083 Peoples R China inner mongolia Metall Mat Res Inst Baotou 014034 Peoples R China

The results show that Mg has less effect on the tensile properties and hardness of the steel at room temperature, but a right amount of Mg improves impact and fracture toughness and decreases the fracture-transition temperature considerably due to inclusions modification, as well as prolongs the notch stress rupture life dramatically through strengthening grain boundary and modifying boundary carbides. There is an optimum Mg content, which is about 0.0030% in the experimental 35CrNi3MoV steel. (Edited author abstract) 8 Refs.

关键词： Steel

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Inclusion Modification with Mg Treatment for 35CrNi3MoV Steel

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Journal of Materials Science & technology 1998年第1期14卷 53-56页

作者： Fu, J Yu, YG Wang, AR Chen, BP Sun, WS univ Sci & technol Beijing Beijing 100083 Peoples R China inner mongolia Met Mat Res Inst Baotou 014034 Peoples R China

The effects of Mg on the inclusion characteristics of 35CrNi3MoV steel have been studied. The results show that Mg treatment reduces obviously the amount of inclusion in the steel. Magnesium and oxygen in liquid steel form dispersed fine particles of MgO, to which other oxides or sulphides nucleated at heterogeneity and grown during solidification. In this way the inclusions are modified. The small spherical inclusions containing MgO have been observed in the Mg treated steel in contrast to the large angular inclusions with Al2O3 in the conventional steel. Especially the elongated MnS inclusion is replaced by small MgS . MgO or MgS. MnS . MgO complex inclusion. The formation of inclusions have been discussed.

关键词： Steel metallurgy

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The development of real time data driving multi-axis linkage and synergic movement control system of 3D variable cross-section roll forming machine

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High technology Letters 2013年第3期19卷 261-266页

作者：管延智 Li Qiang Wang Haibo Yang Zhenfeng Zheng Yuting College of Sciences Inner Mongolia University of Technology College of Mechanical and Electrical Engineering North China University of Technology

The three dimensional variable cross-section roll forming is a kind of new metal forming technol- ogy which combines large forming force, multi-axis linkage movement and space synergic movement, and the sequential synergic movement of the ganged roller group is used to complete the metal sheet forming according to the shape of the complicated and variable forming part data. The control system should meet the demands of quick response to the test requirements of the product part. A new kind of real time data driving multi-axis linkage and synergic movement control strategy of 3D roll forming is put forward in the paper. In the new control strategy, the forming data are automatically generated according to the shape of the parts, and the multi-axis linkage movement together with cooperative motion among the six stands of the 3D roll forming machine is driven by the real-time information, and the control nodes are also driven by the forming data. The new control strategy is applied to a 48 axis 3D roll forming machine developed by our research center, and the control servo period is less than 10ms. A forming experiment of variable cross section part is carried out, and the forming preci- sion is better than ＋ 0.5mm by the control strategy. The result of the experiment proves that the control strategy has significant potentiality for the development of 3D roll forming production line with large scale, multi-axis ganged and svner^ic movement

关键词： real time data driving variable cross-section roll forming multi-axis ganged synergic movement

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Critical behavior of Gd5Si2Ge1.9Ga0.1 near the ferromagnetic-paramagnetic phase transition

Critical behavior of Gd5Si2Ge1.9Ga0.1 near the ferromagnetic...

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第八届中国功能材料及其应用学术会议

作者： ZHAO Zeng-ru WANG Gao-feng ZHANG Xue-feng Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources Inner Mongolia University of Science and Technology School of Mathematics Physics and Biological EngineeringInner Mongolia University of Science and Technology

ISBN: (纸本)9783037859698

The critical behavior near the ferromagnetic-paramagnetic phase transition in GdSiGeGahas been investigated using a method based on the field dependence of isothermal entropy *** reliability of the critical exponents determined in such a way has been examined through various techniques,like constructing the modified Arrott plot,applying the scaling law on the isothermal magnetization curves,and comparing the values with those obtained from the Kouvel-Fisher *** resulting values of the exponents were estimated to be β= 0.45(2),γ=1.31(5),8= 3.9(2) and n= 0.69(1),close to the values predicted by the mean field ***,we concluded that the exchange interaction is of long-range type.

关键词： Gd5Si2Ge1.9Ga0.1 Critical exponent Phase transition Isothermal entropy change

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Synthesis and Characterization of Sm_xGd_yCe_(1-x-y)O_(2-δ) Nanopowders

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Journal of Materials Science & technology 2005年第1期21卷 131-134页

作者： Xiwen SONG, Yongwang ZHAO, Zhefeng WANG, Jun PENG,Wenguang ZHAO and Shengli AN School of Materials Science and Engineering, inner mongolia university of Science and technology, Baotou 014010, China School of Metallurgical and Ecological Engineering, university of Science and technology Beijing, Beijing 100083, ChinaAssoc. Prof. Sch. of Mat. Sci. and Eng. Inner Mongolia Univ. of Sci. Baotou 014010 China Sch. of Metall. and Ecological Eng. Univ. of Sci. and Technol. Beijing Beijing 100083 China

SmxGdyCe1-x-yO2-δ (x+y=0.2 and x=0, 0.04, 0.08, 0.12, 0.16, 0.2) nanopowders were prepared by a copre-cipitation method. The zeta potential and sedimentation volume of Ce(OH)4 aqueous dispersions at different pH values were measured. The isoelectric point (IEP) of Ce(OH)4 suspensions is 7.0. The maximum potential value of -18.5 mV and maximum sedimentation volume of 19 ml are reached at pH=10. The evolution behaviors of the xSm(OH)3·yGd(OH)3·(1-x-y)Ce(OH)4 dried powders in the heating process was characterized by DTA/TG and XRO. The powders decompose to ceria based solid solution at a temperature below 300℃ and forms cubic fluorite structure ceria at about 650℃. The properties of SmxGdyCe1-x-yO2-δ solid solutions were characterized by XRD, TEM and BET. The lattice parameter of doped Ce02 increases linearly with increasing Sm3+ substitution (or decreasing Gd3+ substitution). The particle size of the doped ceria powders is from 5 nm to 10 nm.

关键词： Coprecipitation Sm2O3 Gd2O3 Doped Ceria Nano-powders

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Establishing Public Crisis Management System in Chinese Minority Regions

Establishing Public Crisis Management System in Chinese Mino...

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2012年公共管理国际会议

作者： GUO Jing-tao College of Public Administration of Huazhong University of Science and Technology School of Public Management of inner mongolia university

ISBN: (纸本)9787564710316

Currently, the local governments in Chinese minority regions face very serious public security problems. Chinese governors have to pay close attention to the work concerning emergency management. Due to current situation and particularities of public crisis management in regions of minorities, the relevant governments will face greater challenges when managing crisis. The construction of the Chinese e-government not only has a huge influence on the crisis management system, but also provides a convenient platform for the government on the technical implementation. For the regional government crisis managers, they should know how to make full use of existing computer network on e-government platform. The crisis management system in line with the particularities of government crisis management in Chinese minority regions should be built so as to administrate and control the whole process of crisis prevention and governance effectively.

关键词： E-government Regions of minorities Public crisis Emergency management

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Sweet sorghum for phytoremediation and bioethanol production

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Journal of Leather Science and Engineering 2021年第1期3卷 360-382页

作者： Ming‑Zhao Xiao Qian Sun Si Hong Wei‑Jing Chen Bo Pang Zhi‑Yan Du Wen‑Bin Yang Zhuohua Sun Tong‑Qi Yuan Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityBeijing 100083China Yuan Longping High‑Tech Agriculture Co. LtdChangsha 410000China inner mongolia Lignicell Bio‑Refining Co. LtdBaotou 014000China

As an energy crop,sweet sorghum(Sorghum bicolor(L.)Moench)receives increasing attention for phytoremedia‑tion and biofuels production due to its good stress tolerance and high biomass with low input *** sorghum possesses wide adaptability,which also has high tolerances to poor soil conditions and *** rapid growth with the large storage of fermentable saccharides in the stalks offers considerable scope for bioethanol pro‑***,sweet sorghum has heavy metal tolerance and the ability to remove cadmium(Cd)in ***,sweet sorghum has great potential to build a sustainable phytoremediation system for Cd‑polluted soil remediation and simultaneous ethanol *** implement this strategy,further efforts are in demand for sweet sorghum in terms of screening superior varieties,improving phytoremediation capacity,and efficient bioetha‑nol *** this review,current research advances of sweet sorghum including agronomic requirements,phytoremediation of Cd pollution,bioethanol production,and breeding are ***,crucial problems for future utilization of sweet sorghum stalks after phytoremediation are combed.

关键词： Sweet sorghum Bioenergy crop Phytoremediation Cadmium,Bioethanol Pretreatment

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Effects of Nd2O3 exposure of rare earth particles on C57 BL/6J male mice sex hormone secretion and CYP11A1/PLZF/STRA8 protein expression

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China Medical Abstracts (Internal Medicine) 2023年第1期 20-20页

作者：宋海燕 Dept Occup Health & Environ Hyg Baotou Med CollInner Mongolia Sci Technol Univ

Objective To explore the effects of Nd203 exposure to rare earth particles on the secretion of sex hormones,cytochrome P450 family member 11A1 (CYP11A1),spermatogenesis markers promyelocytic leukemia zinc finger protein (PLZF) and retinoic acid stimulating gene8 (STRA8) protein in C57 BL/6J male *** In March 2021,forty-eight male C57 BL/6J mice aged6-8 weeks were divided into control group and Nd2 03exposure low,medium and high dose groups (exposingdoses of 62.5,125.0,250.0 mg/ml Nd203),

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