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Recovery of rare earth elements from permanent magnet scraps by pyrometallurgical process

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Rare Metals 2022年第5期41卷 1697-1702页

作者： Yu-Yang Bian Shu-Qiang Guo Yu-Ling Xu Kai Tang xiong-Gang lu Wei-Zhong Ding Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai UniversityShanghai 200072China SINTEF Materials and Chemistry 7465 TrondheimNorway

In order to recover valuable rare earth elements from Nd-Fe-B permanent magnet scraps, a high-temperature pyrometallurgical process was developed in this work. The magnet scraps were first pulverized and oxidized at 1000℃ in normal atmosphere. The oxidized mixtures were then selectively reduced by carbon in the temperature range of 1400-1550℃. In this way, the rare earth elements were extracted to the form of oxides, whereas Fe and B were separated to metal phase. For improving the purity of rare earth oxides, the effects of temperature and reaction time on the reduction of B_(2)O_(3) in oxide phase were investigated. It is found that increasing reaction temperature and extending reaction time will help the reduction of B_(2)O_(3) contents in rare earth oxide phase. Almost all rare earth elements can be enriched in the oxide phase with the highest purity of 95 %.

关键词： Rare earth Permanent magnet Recycling

行气活血止痛膏对输液性静脉炎疗效及相关炎性因子影响的实验研究

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实用临床医药杂志 2024年第13期28卷 126-130页

作者：唐灵玲冯莉杨棋熊璐罗锋李润西南医科大学附属中医医院四川泸州646000 四川省第二中医医院四川成都610000 西南医科大学护理学院四川泸州646000

目的探讨行气活血止痛膏中药外治法在静脉炎治疗中的应用效果。方法以甘露醇为致炎物,通过家兔耳缘静脉进行输注,建立静脉炎模型,将建模成功的家兔随机分为4个亚组进行干预,空白对照组常规饲养,不做任何干预处理。干预后通过观察静脉炎... 详细信息

目的探讨行气活血止痛膏中药外治法在静脉炎治疗中的应用效果。方法以甘露醇为致炎物,通过家兔耳缘静脉进行输注,建立静脉炎模型,将建模成功的家兔随机分为4个亚组进行干预,空白对照组常规饲养,不做任何干预处理。干预后通过观察静脉炎表征、血清白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、血管内皮生长因子A(VEGF-A)的含量,探讨行气活血止痛膏对甘露醇致家兔输液性静脉炎的改善作用。结果造模成功率为90.0%。治疗第1天,生理盐水组无效8例、有效1例;喜疗妥组无效6例、有效3例;硫酸镁组无效7例、有效2例;行气活血止痛膏组无效7例、有效2例;4组疗效比较,差异无统计学意义(P=0.431)。治疗第4天,生理盐水组无效5例、有效2例、显效2例;喜疗妥组有效1例、显效5例、治愈3例;硫酸镁组有效2例、显效5例、治愈2例;行气活血止痛膏组有效2例、显效4例、治愈3例。治疗第4天,与生理盐水组比较,喜辽妥组(P=0.001)、硫酸镁组(P=0.020)、行气活血止痛膏组(P=0.003)疗效差异均有统计学意义;硫酸镁组、行气活血止痛膏组疗效与喜疗妥组比较,差异均无统计学意义(P>0.05);与硫酸镁组比较,喜疗妥组、行气活血止痛膏组疗效差异均无统计学意义(P>0.05);与行气活血止痛膏组比较,喜疗妥组、硫酸镁组疗效差异均无统计学意义(P>0.05);生理盐水组治疗有效率为11.1%,治愈率为0%,喜辽妥组有效率为100.0%,治愈率为33.3%,硫酸镁组有效率为77.7%,治愈率为44.4%,行气活血止痛膏组有效率为66.7%,治愈率为22.2%。行气活血止痛膏组、喜疗妥组、硫酸镁组药物有效率高于生理盐水组,差异有统计学意义(P<0.05)。干预后,4个模型亚组血清炎性因子IL-6、TNF-α、VEGF-A水平与空白对照组比较,差异均有统计学意义(P<0.05);生理盐水组与喜辽妥组、硫酸镁组、行气活血止痛膏组血清炎性因子IL-6、TNF-α、VEGF-A含量差异均有统计学意义(P<0.05);与喜辽妥组比较,硫酸镁组和行气活血止痛膏组血清炎性因子IL-6、TNF-α、VEGF-A含量比较,差异均有统计学意义(P<0.05)。空白对照组炎性因子水平最低,生理盐水组炎性因子水平最高。结论行气活血止痛膏对于甘露醇致家兔输液性静脉炎具有改善作用,但相较于常用的喜疗妥软膏疗效较差,因此可对药物配方进行适当调整和改进,以提高疗效。

关键词：静脉炎行气活血止痛膏抗炎血清炎性因子

A Nonlinear Control Allocation Algorithm for DYC in Distributed-motor Drive Electric Vehicles using S-SQP

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A Nonlinear Control Allocation Algorithm for DYC in Distribu...

Preparation of metal‐organic frameworks and their derivatives for supercapacitors

第26届中国控制与决策会议

作者： xiong lu Chen Yuanlong Jin Chi Clean Energy Automotive Engineering Center Tongji University School of Automotive Studies Tongji University

ISBN: (纸本)9781479937066

The yaw stabilization in distributed-motor drive electric vehicles is usually based on hierarchical control structure, namely an upper-level motion following controller and a lower-level control allocation scheme. The existing strongly coupling property of tire forces gives rise to extreme difficulty in solving the control allocation problem for its nonlinearities in the moment/effector relationships, especially under critical cornering. In this paper, an improved approach is presented for the solution of the control allocation where the control variable rates or moment are nonlinear functions of control position. A single-iteration sequential quadratic programming method based on simplified tire model is exploited to solve the control allocation problem. The performance of this approach will be compared with the traditional approach which utilizes linear efficiency matrix without considering the tire coupling property by simulation. The results show that the yaw moment generated by the change of lateral force cannot be neglected, which will affect both the allocation accuracy and control energy. The single-iteration sequential quadratic programming method that satisfies the real-time requirement not only efficiently achieves four wheel longitudinal forces according to the wheel states, but also significantly reduces the allocation errors. Additionally, control energy consumption is lower when compared with the approach using linear efficiency matrix.

关键词： Distributed-motor Drive Electric Vehicle Direct Yaw-moment Control(DYC) Control Allocation Nonlinear Programming Single-iteration Sequential Quadratic Programming

来源： cnki会议评论

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Biosurface and Biotribology 2022年第3期8卷 151-164页

作者： Youjian Li Donglin Gan Xu Deng Lili Jiang Chaoming Xie xiong lu Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduSichuanChina Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio‐functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjingJiangsuChina Institute of Fundamental and Frontier Science University of Electronic Science and Technology of ChinaChengduChina Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science and EngineeringXihua UniversityChengduChina

To satisfy the requirements of social power development,it is urgently necessary to develop innovative and sustainable new energy storage *** have attracted considerable attention as a new type of energy storage device,owing to their high energy density,high power density,fast charging and discharging speeds,and long cycle *** electrode material is an important factor in determining the electrochemical performance of *** recent years,researchers explored the application of metal‐organic frameworks(MOFs)and their derivatives as electrode materials for *** this paper,the preparation of monometallic,bimetallic,and conductive MOFs,and their derivatives for application in supercapacitors are *** addition,challenges facing MOFs in the field of supercapacitors and their future development prospects are discussed.

关键词： bimetallic MOFs conductive MOFs derivatives monometallic MOFs supercapacitors

Extraction of valuable metals from low nickel matte by calcified roasting-acid leaching process

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Transactions of Nonferrous Metals Society of China 2019年第10期29卷 2202-2212页

作者： Shu-hua GENG Guang-shi LI Yong ZHAO Hong-wei CHENG Yi lu xiong-gang lu Qian XU State Key Laboratory of Advanced Special Steel School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

A calcified roasting-acid leaching process was developed as a highly effective method for the extraction of valuable metals from low nickel matte in the presence of CaO additive. The influences of process parameters on the metal extraction were studied, including the roasting temperature, roasting time, addition of CaO, H2SO4 concentration and liquid-solid ratio. Under the optimum condition, 94.2% of Ni, 98.1% of Cu, 92.2% of Co and 89.3% of Fe were recovered. Additionally, 99.6% of Fe was removed from the leachate as goethite by a subsequent goethite iron precipitation process. The behavior and mechanism of CaO additive in the roasting process was clarified. The role of CaO is to prevent the formation of nonferrous metal ferrite phases by a preferential reaction with Fe2O3 during the roasting process. The metal oxides(Cu O and NixCu1-xO) remained stable during high-temperature roasting and were subsequently efficiently leached using a sulfuric acid solution.

关键词： low nickel matte calcified roasting CaO ferrite goethite process

Mussel‑Inspired Redox‑Active and Hydrophilic Conductive Polymer Nanoparticles for Adhesive Hydrogel Bioelectronics

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Nano-Micro Letters 2020年第12期12卷 117-132页

作者： Donglin Gan Tao Shuai Xiao Wang Ziqiang Huang Fuzeng Ren Liming Fang Kefeng Wang Chaoming Xie xiong lu Key Lab of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031People’s Republic of China Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongPeople’s Republic of China Department of Polymer Science and Engineering School of Materials Science and EngineeringSouth China University of TechnologyGuangzhouPeople’s Republic of China National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610064People’s Republic of China

Conductive polymers(CPs)are generally insoluble,and developing hydrophilic CPs is significant to broaden the applications of *** this work,a mussel-inspired strategy was proposed to construct hydrophilic CP nanoparticles(CP NPs),while endowing the CP NPs with redox activity and *** is a universal strategy applicable for a series of CPs,including polyaniline,polypyrrole,and poly(3,4-ethylenedioxythiophene).The catechol/quinone contained sulfonated lignin(LS)was doped into various CPs to form CP/LS NPs with hydrophilicity,conductivity,and redox *** CP/LS NPs were used as versatile nanofillers to prepare the conductive hydrogels with long-term *** CP/LS NPs-incorporated hydrogels have a good conductivity because of the uniform distribution of the hydrophilic NPs in the hydrogel network,forming a well-connected electric *** hydrogel exhibits long-term adhesiveness,which is attributed to the mussel-inspired dynamic redox balance of catechol/quinone groups on the CP/LS *** conductive and adhesive hydrogel shows good electroactivity and biocompatibility and therefore has broad applications in electrostimulation of tissue regeneration and implantable bioelectronics.

关键词： Mussel-inspired Redox-active nanoparticles Conductive polymer Conductive hydrogel Adhesive bioelectronics

Performance of Sm_(0.7)Sr_(0.3)CoO_(3-δ) dmembrane under CO_2-containing atmosphere

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Rare Metals 2016年第9期35卷 723-728页

作者： Yu-Wen Zhang Fan-Lin Zeng Chen-Chen Yu Cheng-Zhang Wu Wei-Zhong Ding xiong-Gang lu Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University

The permeability and stability of Sm_（0.7）Sr_（0.3）CoO_（3-δ）（SSCO） regarding the special requirements for carbon capture and storage（CCS） application were *** CO_ was used as the sweep gas at 900 °C,leading to that the oxygen permeation flux decreases by about 34 %.Several cycles of changing the sweep gas between helium and CO_2 indicate the good reversibility of this *** carbonate formation and adsorption of CO_2 on the membrane surface are responsible for the degradation of the membrane *** better CO_2 resistance results from the substitution of Sm for Sr due to the higher acidity of Sm_2O_3（1.278） than that of Sr O（0.978） and a discontinuous layer of carbonate.

关键词： Sm0.7Sr0.3CoO3-δ Oxygen permeation CO2 Carbonate Perovskite

A transient expression system in soybean mesophyll protoplasts reveals the formation of cytoplasmic GmCRY1 photobody-like structures

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Science China(Life Sciences) 2019年第8期62卷 1070-1077页

作者： lu xiong Cong Li Hongyu Li Xiangguang Lyu Tao Zhao Jun Liu Zecheng Zuo Bin Liu Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing100081China Jilin Province Engineering Laboratory of Plant Genetic Improvement College of Plant ScienceJilin UniversityChangchun130062China

Soybean(Glycine max(L.) Merr.), grown for its plant oils and proteins, is one of the most important crops throughout the *** stable and heritable transgenic soybeans is relatively inefficient;therefore, there is an urgent need for a simple and high-efficient transient transformation method by which to enable the investigation of gene functions in soybeans, which will facilitate the elucidation and improvement of the molecular mechanisms regulating the associated agronomic traits. We established a system of transient expression in soybean mesophyll protoplasts and obtained a high level of protoplast transfection efficiency(up to 83.5%). The subcellular activity of the protoplasts was well preserved, as demonstrated by the dynamic formation of GmCRY nucleus photobodies(NPs) and/or cytoplasmic photobody-like structures(CPs) in response to blue *** addition, we showed that GmCRY1b CPs colocalized with GmCOP1b, a co-ortholog of Arabidopsis thaliana CONSTITUTIVE PHOTOMORPHOGENIC 1(COP1), which provided new insight into the potential roles of GmCRY1s in the cytoplasm.

关键词： soybean protoplast transfection subcellular localization cryptochrome photobodies

Robust Identification of Road Surface Condition Based on Ego‑Vehicle Trajectory Reckoning

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Automotive Innovation 2022年第4期5卷 376-387页

作者： Cheng Tian Bo Leng Xinchen Hou Yuyao Huang Wenrui Zhao Da Jin lu xiong Junqiao Zhao School of Automotive Studies Tongji UniversityShanghaiChina College of Electronic and Information Engineering Tongji UniversityShanghaiChina

The type of road surface condition(RSC)will directly affect the driving performance of *** the type of RSC is essential for both transportation agencies and individual ***,most existing methods are solely based on a dynamics-based method or an image-based method,which is susceptible to road excitation limitations and interference from the external ***,this paper proposes a decision-level fusion identification framework of the RSC based on ego-vehicle trajectory reckoning to accurately obtain the type of RSC that the front wheels of the vehicle will ***,a road feature extraction model based on multi-task learning is conducted,which can simultaneously segment the drivable area and road cast ***,the optimized candidate regions of interest are classified with confidence levels by *** environmental interference,candidate regions of interest regarded as virtual sensors are fused by improved Dempster-Shafer evidence theory to obtain the fusion ***,the ego-vehicle trajectory reckoning module based on the kinematic bicycle model is added to the proposed fusion method to extract the RSC experienced by the front *** performance of the entire framework is verified on a specific dataset with shadow and split curve *** results reveal that the proposed method can identify the RSC with accurate predictions in real time.

关键词： Road surface identification Ego-Vehicle trajectory reckoning Multi-task learning Dempster-Shafer evidence theory Autonomous vehicle