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Facile and effective synthesis strategy for terbium-doped hydroxyapatite toward photoelectric devices and flexible functional fibers

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Rare Metals 2024年第4期43卷 1713-1723页

作者： Xiao-Dong Zhang Kun Nie Zi-Yao Hu Ran-Ran Zhou Xiu-Qiang Duan Wu-bin Dai Song-Song Nie Song-Jun Yao Luo-Xin Wang Le-fu Mei Hua Wang Yi-Yi Yao Xiao-Xue Ma Key Laboratory for New Textile Materials and Applications and State Key Laboratory of New Textile Materials and Advanced Processing Technology School of Materials Science and EngineeringWuhan Textile University Key Laboratory of Testing and Tracing of Rare Earth Products for State Market Regulation Jiangxi University of Science and Technology Hubei Key Laboratory of Plasma Chemistry and Advanced Materials and Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of Technology Xiangyang Power Supply Company Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral Materials School of Materials Science and Technology China University of Geosciences (Beijing) Department of Chemistry and Biochemistry University of California Los Angeles

As a material with good biocompatibility,hydroxyapatite（HAP） can have optical properties after doping with various rare earth ions.As a biocompatible fluorescent material,doped HAP could have broad applications in biological probes,drug delivery,optoelectronic materials,fluorescence anti-counterfeiting,and other aspects.In this paper,we put forward the preparation of HAP doped with terbium（Ⅲ） ions(Tb3+) by hydrothermal co-precipitation.By controlling the Tb3+doping content in reaction and the reaction time,the changes in HAP's structure,morphology,and luminescence properties under different conditions were studied.When the doping amount of Tb3+reached an optimal value,the dipole-quadrupole would occur and the concentration would be quenched.The control experiment showed that the optimal Tb3+content was 7.5 × 10-5mol,which showed the best fluorescence performance.HAP,a non-luminous material,was rarely used in the field of fluorescent anti-counterfeiting and photoelectric devices.We proposed to prepare a luminescent aramid/polyphenylene sulfide（ACFs/PPS） fiber paper and a new light-emitting diode（LED） using the Tb-doped HAP phosphor.The composite sample exhibited an excellent stability and fluorescence performance,which also demonstrated a possibility of HAP applications in anticounterfeiting and photoelectric.The introduction of Tb3+dopant HAP was done to give HAP optical properties and broaden the application range of HAP.

关键词： Hydroxyapatite Rare earth luminescence Photoelectric device Aramid Polyphenylene sulfide fiber paper Luminescent fiber

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^(137)Cs tracing of the spatial patterns in soil redistribution,organic carbon and total nitrogen in the southeastern Tibetan Plateau

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International Soil and Water Conservation Research 2023年第1期11卷 86-96页

作者： Zhengan Su Lijuan Wang Yihan Liu bin fu Jjianhui Zhang Zuo Wu Tao Zhou Junjie Wang Key Laboratory of Mountain Environment Evolution and Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610041PR China University of Chinese Academy of Science Beijing100049PR China College of Geography and Resources Science Sichuan Normal UniversityChengdu610101PR China College of Water Conservancy and Hydropower Engineering Sichuan Agricultural UniversityYa'an625014.PR China

The southeastern Tibetan Plateau,which profoundly affects East Asia by helping to maintain the stability of climate systems,biological diversity and clean water,is one of the regions most vulnerable to water erosion,wind erosion,tillage erosion,freeze-thaw erosion and overgrazing under global climate changes and intensive human activities.Spatial variations in soil erosion in terraced farmland(TL),sloping farmland(SL)and grassland(GL)were determined by the^(137)Cs tracing method and compared with spatial variations in soil organic carbon(SOC)and total nitrogen(total N).The^(137)Cs concentration in the GL was higher in the 0-0.03 m soil layer than in the other soil layers due to weak migration and diffusion under low precipitation and temperature conditions,while the^(137)Cs concentration in the soil layer of the SL was generally uniform in the 0-0.18 m soil layer due to tillage-induced mixing.Low^(137)Cs inventories appeared at the summit and toe slope positions in the SL due to soil loss by tillage erosion and water erosion,respectively,while the highest^(137)Cs inventories appeared at the middle slope posi-tions due to soil accumulation under relatively flat landform conditions.In the GL,the^(137)Cs data showed that higher soil erosion rates appeared at the summit due to freeze-thaw erosion and steep slope gradients and at the toe slope position due to wind erosion,gully erosion,freeze-thaw erosion and overgrazing.The^(137)Cs inventory generally increased from upper to lower slope positions within each terrace(except the lowest terrace).The^(137)Cs data along the terrace toposequence showed abrupt changes in soil erosion rates between the lower part of the upper terrace and the upper part of the immediate terrace over a short distance and net deposition on the lower and toe terraces.Hence,tillage erosion played an important role in the soil loss at the summit slope positions of each terrace,while water erosion dominantly transported soil from the upper terrace to the lower terrace and resulted in net soil depos

关键词： Southeastern Tibetanplateau ^(137)Cs SOC Total N Soil erosion

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In situ forming injectable MSC-loaded GelMA hydrogels combined with PD for vascularized sweat gland regeneration

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Military Medical Research 2024年第1期11卷 152-155页

作者： Enhe Jirigala bin Yao Zhao Li Yi-Jie Zhang Chao Zhang Li-Ting Liang Fan-Liang Zhang Xing-Yu Yuan Xian-Lan Duan Wei Song Meng-De Zhang Yi Kong Xiao-bing fu Sha Huang Research Center for Tissue Repair and Regeneration Medical Innovation Research DepartmentChinese PLA General Hospital and PLA Medical CollegeBeijing 100048China Institute of Basic Medical Research Inner Mongolia Medical UniversityHohhot 010110China Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjin 300072China School of Medicine Nankai UniversityTianjin 300071China

Dear Editor,Three dimensional(3D)bioprinted extracellular matrix(ECM)can be used to provide both biochemical and biophysical cues to direct mesenchymal stem cells(MSCs)differentiation,and then differentiated cells were isolated for implantation in vivo using surgical procedures.However,the reduced cell activity after cell isolation from 3D constructs and low cell retention in injured sites limit its application[1].Methacrylated gelatin(GelMA)hydrogel has the advantage of fast crosslinking,which could resemble complex architectures of tissue construct in vivo[2].Here,we adopted a noninvasive bioprinting procedure to imitate the regenerative microenvironment that could simultaneously direct the sweat gland(SG)and vascular differentiation from MSCs and ultimately promote the replacement of glandular tissue in situ(Fig.1a).

关键词： Sweat gland GelMA In situ niche Cell differentiation Tissue incorporation Vascularization

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RuCo alloy nanoparticles embedded within N-doped porous two-dimensional carbon nanosheets:a high-performance hydrogen evolution reaction catalyst

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Tungsten 2024年第1期6卷 114-123页

作者： Jin-Hui Wang Shao-Wei Yang fu-bin Ma Yi-Ke Zhao Shi-Nuo Zhao Zheng-Yu Xiong Dong Cai Hai-Dong Shen Kai Zhu Qiu-Yu Zhang Yue-Ling Cao Tian-Shuai Wang He-Peng Zhang Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China Xi’an Key Laboratory of functional Organic Porous Materials School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710129China School of Power and Energy Northwestern Polytechnical UniversityXi’an 710129China Chongqing Science and Technology Innovation Center of Northwestern Polytechnical University Chongqing 401135China

Developing cost-effective electrocatalysts with high activity and stability especially at high current density is of great significance for the large-scale commercial application of electrochemical water splitting to hydrogen production but still remains challenging.Herein,we report an effective confinement pyrolysis strategy to fabricate embedded ruthenium-cobalt nanoclusters supported on N-doped porous two-dimensional carbon nanosheets(RuCo@CN).Markedly,the embedded structure can effectively prevent the migration,agglomeration,and leaching of nanoparticles,thus endowing the RuCo@CN catalyst with high stability.To be exact,high stability with up to 650 h can be achieved at high current density(-500 and-1000 mA·cm^(-2)).Besides,the RuCo@CN catalysts also exhibit highly reactive with low overpotentials of only 11mV at-10 mA·cm^(-2).Density functional theory calculations reveal that the introduction of cobalt reduces the decomposition barrier of H_(2)O for RuCo@CN alloy,thus promoting hydrogen evolution reaction.

关键词： Hydrogen evolution reaction Confinement pyrolysis strategy Mosaic structure Stability

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径-轴向磁轴承冷却设计及温度场分析

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中国电机工程学报 2024年第12期44卷 4945-4955,I0029页

作者：刘斌余中军付佳舰船综合电力技术国防科技重点试验室(海军工程大学) 湖北省武汉市430033

由于磁轴承与转子无直接物理接触、支承特性可控,在小功率等级电机环境下其损耗较低,可采用自然冷却。而对于大功率等级电机,磁轴承损耗增大,必须考虑冷却设计以降低其温升。该文以某型兆瓦级高速永磁发电机磁轴承为研究对象,在考虑径-... 详细信息

由于磁轴承与转子无直接物理接触、支承特性可控,在小功率等级电机环境下其损耗较低,可采用自然冷却。而对于大功率等级电机,磁轴承损耗增大,必须考虑冷却设计以降低其温升。该文以某型兆瓦级高速永磁发电机磁轴承为研究对象,在考虑径-轴向磁轴承集成状态及发电机实际内部环境条件下,基于径-轴向磁轴承三维流场、温度场分析,首先研究了自然冷却条件下磁轴承温度场特征,结果表明磁轴承温度过高,径向磁轴承定转子会产生较大热变形,增大磁轴承安全运行风险。为了解决该问题,该文结合电机空冷结构和磁轴承结构特征,提出一种集成化主动冷却结构,并仿真分析了冷却效果,结果表明进行主动冷却后径-轴向磁轴承温度明显下降,径向磁轴承定转子气隙变化量大幅减小。最后,进行样机温升试验,试验结果与仿真结果一致。

关键词：磁轴承集成状态三维温度场分析冷却设计

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Relationship between preoperative psychological stress and shortterm prognosis in elderly patients with femoral neck fracture

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World Journal of Psychiatry 2024年第6期14卷 838-847页

作者： Wen-Hui fu Zhi-Long Hu Yuan-Jun Liao Ri-Jiang Chen Jian-bin Qiu Wu-Tang Que Wan-Tao Wang Wei-Hua Li Wei-bin Lan Department of Orthopedics Longyan First Affiliated Hospital of Fujian Medical UniversityLongyan 361000Fujian ProvinceChina

BACKGROUND Older adults are at high risk of femoral neck fractures(FNFs).Elderly patients face and adapt to significant psychological burdens,resulting in different degrees of psychological stress response.Total hip replacement is the preferred treatment for FNF in elderly patients;however,some patients have poor postoperative prognoses,and the underlying mechanism is unknown.We speculated that the postoperative prognosis of elderly patients with FNF may be related to preoperative psychological stress.AIM To explore the relationship between preoperative psychological stress and the short-term prognosis of elderly patients with FNF.METHODS In this retrospective analysis,the baseline data,preoperative 90-item Symptom Checklist score,and Harris score within 6 months of surgery of 120 elderly patients with FNF who underwent total hip arthroplasty were collected.We analyzed the indicators of poor short-term postoperative prognosis and the ability of the indicators to predict poor prognosis and compared the correlation between the indicators and the Harris score.RESULTS Anxiety,depression,garden classification of FNF,cause of fracture,FNF reduction quality,and length of hospital stay were independent influencing factors for poor short-term postoperative prognoses in elderly patients with FNF(P<0.05).The areas under the curve for anxiety,depression,and length of hospital stay were 0.742,0.854,and 0.749,respectively.The sensitivities of anxiety,depression,garden classification of FNF,and prediction of the cause of fracture were 0.857,0.786,0.821,and 0.821,respectively.The specificities of depression,FNF quality reduction,and length of hospital stay were the highest at 0.880,0.783,and 0.761,respectively.Anxiety,depression,and somatization scores correlated moderately with Harris scores(r=-0.523,-0.625,and-0.554;all P<0.001).CONCLUSION Preoperative anxiety,depression,and somatization are correlated with poor short-term prognosis in elderly patients with FNF and warrant consideration.

关键词： Psychological stress Old age Femoral neck fracture Hip replacement Short-term prognosis Correlation

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Ilizarov technique for treating elbow stiffness caused by myositis ossificans:A case report

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World Journal of Clinical Cases 2024年第17期12卷 3144-3150页

作者： Ming-Wang Zhou Peng-Wei Zhang An-Le Zhang Chang-Hao Wei Yu-De Xu Wei Chen Zhi-bin fu Department of Orthopedics Medicine Gansu Province Hospital of Chinese MedicineLanzhou 730050Gansu ProvinceChina Gansu University of Chinese Medicine Clinical College of Traditional Chinese MedicineLanzhou 730000Gansu ProvinceChina

BACKGROUND Myositis ossificans(MO)is a rare disease involving the formation of bone outside the musculoskeletal system.While surgical intervention is the main treatment approach,preventing recurrence and standardized rehabilitation are also crucial.Here,we present a surgical strategy to prevent the recurrence of MO.CASE SUMMARY A 28-year-old female patient was admitted for the first time for a comminuted fracture of the left olecranon.However,incorrect postoperative rehabilitation resulted in the development of elbow joint stiffness with ectopic ossification,causing a loss of normal range of motion.The patient was diagnosed with MO based on physical examination,X-ray findings,and clinical presentation.We devised a surgical strategy to remove MO,followed by fixation with an Ilizarov frame,and implemented a scientifically reasonable rehabilitation plan.The surgery lasted for 3 h with an estimated blood loss of 45 mL.A drainage tube was placed after surgery,and fluid was aspirated through ultrasound-guided puncture.The patient experienced a significant reduction in joint stiffness after surgery.In the final follow-up at 9 mouths,there was evident improvement in the range of motion of the elbow joint,and no other symptoms were reported.CONCLUSION The Ilizarov frame is an advantageous surgical technique for facilitating rehabilitation after MO removal.It offers benefits such as passive recovery,individualized treatment,and prompt recovery.

关键词： Myositis ossificans Ilizarov frame Rehabilitation strategy Stiffness Case report

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基于文献回顾的有色金属冶炼废渣的特征、资源化途径及其安全利用评价

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Journal of Central South University 2024年第4期31卷 1178-1196页

作者：徐则林姚佳斌付融冰 Centre for Environmental Risk Management and Remediation of Soil and Groundwater Tongji UniversityShanghai 200092China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

冶炼废渣作为冶炼过程中产生的工业副产物,由于其缺乏安全、合理的防护和管理措施可能导致环境问题。通过全面分析近年来发表的相关文献,本文对有色金属冶炼废渣的特性、资源化利用途径及安全利用评价等方面的最新研究进展进行了介绍。... 详细信息

冶炼废渣作为冶炼过程中产生的工业副产物,由于其缺乏安全、合理的防护和管理措施可能导致环境问题。通过全面分析近年来发表的相关文献,本文对有色金属冶炼废渣的特性、资源化利用途径及安全利用评价等方面的最新研究进展进行了介绍。研究结果表明,不同的原生精矿、冶炼条件和冶炼类型决定了冶炼废渣的化学和矿物学特征。此外,冶炼废渣在各种资源化利用中表现出极高的灵活性,不仅可以用于金属回收和建筑材料,还可以作为农业肥料和修复剂。同时,本文强调了在各种利用情景下对废渣进行安全性评估的重要性,以降低其潜在环境风险。此外,本文还强调了未来的研究方向,包括建立一种综合且量化的土渣混合体中重金属环境风险评价方法,以及探索更多创新的冶炼废渣资源化利用方法。综上所述,本文对于推动冶炼废渣在环境保护和资源可持续利用方面的研究有重要意义。

关键词：冶炼废渣有色金属废渣特征资源化利用途径安全利用评价

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A Network Decomposition Model for Rubber-Like Materials Considering Topological Constraints

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Acta Mechanica Solida Sinica 2018年第6期31卷 785-793页

作者： bin fu Xiaoxiang Yang Qing Li College of Mechanical and Electrical Engineering Shaoxing UniversityShaoxing 312099China College of Mechanical Engineering and Automation Fuzhou UniversityFuzhou 350108China College of Mechanical and Electronic Engineering Fujian Agriculture and Forestry UniversityFuzhou 350108China

A molecular network constitutive model is proposed in this study.Based on the concept of molecular network decomposition,the molecular network was decomposed into a James-Guth 3-chain network model and an Arruda-Boyce 8-chain network model.Considering that the single molecular chain of rubber is constrained by the surrounding molecular networks, the 3-chain model and the 8-chain model were consequently modified using the tube theory.The proposed model contains four material parameters that were determined by fitting the uniaxial tensile test data from rubber-like materials,and the values of these parameters were utilized to determine the pure shear and the biaxial extension.The proposed model agrees well with the experimental data and can predict the test results of experiments performed under the conditions of pure shear and equi-biaxial deformation with acceptable accuracy.

关键词： Hyperelastic Network decomposition Rubber-like materials Constitutive model Tube model

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软黏土中吸力锚承载特性离心试验研究

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岩土力学 2024年第5期45卷 1472-1480页

作者：熊根付栋康朱斌赖莹中国电建集团华东勘测设计研究院有限公司浙江杭州311122 浙江大学建筑工程学院浙江杭州310058

加载倾角和系泊点位置是吸力锚基础最重要的设计要素之一,能够改变锚体的破坏姿态以影响极限承载力。在饱和软黏土地基中选择不同的加载倾角及系泊点位置进行位移控制下的张紧式吸力锚离心模型试验,利用六自由度磁力计装置定量分析了加... 详细信息

加载倾角和系泊点位置是吸力锚基础最重要的设计要素之一,能够改变锚体的破坏姿态以影响极限承载力。在饱和软黏土地基中选择不同的加载倾角及系泊点位置进行位移控制下的张紧式吸力锚离心模型试验,利用六自由度磁力计装置定量分析了加载倾角和系泊点位置对吸力锚破坏姿态与极限承载力的影响。研究发现,系泊点位置在锚体约2/3高度时,吸力锚发生平动破坏,当加载倾角由35°变化至20°时,在相同的系泊点位置,吸力锚发生后仰破坏,归一化极限承载力稍增大,并且达到极限承载力后仍保持一定的承载力余量;系泊点位置在锚体2/3高度以上时,吸力锚发生前倾破坏,归一化极限承载力降低了25%左右,并且破坏后的承载力余量大大降低。无论破坏模式如何,均未发现锚内土塞与锚有明显分离。

关键词：离心模型试验吸力锚加载倾角系泊点位置破坏姿态极限承载力

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