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Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

Nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He Jie Peng Qingyun Lin Meng Li Weibin Chen Pei Liu Tao Huang Zhencheng Huang Yuying Liu Jiaojiao deng Shenghua Ye Xuming Yang Xiangzhong Ren xiaoping Ouyang Jianhong Liu Biwei xiao Jiangtao Hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China College of Energy Engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

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Chondroitinase ABC combined with Schwann cell transplantation enhances restoration of neural connection and functional recovery following acute and chronic spinal cord injury

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Neural Regeneration Research 2025年第5期20卷 1467-1482页

作者： Wenrui Qu Xiangbing Wu Wei Wu Ying Wang Yan Sun Lingxiao deng Melissa Walker Chen Chen Heqiao Dai Qi Han Ying Ding Yongzhi Xia George Smith Rui Li Nai-Kui Liu xiao-Ming Xu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteDepartment of Neurological SurgeryIndiana University School of MedicineIndianapolisINUSA Department of Hand Surgery the Second Hospital of Jilin UniversityChangchunJilin ProvinceChina Shriners Hospitals Pediatric Research Center Temple University School of MedicinePhiladelphiaPAUSA Department of Anatomy&Cell Biology Indiana University School of MedicineIndianapolisINUSA

Schwann cell transplantation is considered one of the most promising cell-based therapy to repair injured spinal cord due to its unique growth-promoting and myelin-forming properties.A the Food and Drug Administration-approved Phase I clinical trial has been conducted to evaluate the safety of transplanted human autologous Schwann cells to treat patients with spinal cord injury.A major challenge for Schwann cell transplantation is that grafted Schwann cells are confined within the lesion cavity,and they do not migrate into the host environment due to the inhibitory barrier formed by injury-induced glial scar,thus limiting axonal reentry into the host spinal *** we introduce a combinatorial strategy by suppressing the inhibitory extracellular environment with injection of lentivirus-mediated transfection of chondroitinase ABC gene at the rostral and caudal borders of the lesion site and simultaneously leveraging the repair capacity of transplanted Schwann cells in adult rats following a mid-thoracic contusive spinal cord *** report that when the glial scar was degraded by chondroitinase ABC at the rostral and caudal lesion borders,Schwann cells migrated for considerable distances in both rostral and caudal *** Schwann cell migration led to enhanced axonal regrowth,including the serotonergic and dopaminergic axons originating from supraspinal regions,and promoted recovery of locomotor and urinary bladder ***,the Schwann cell survival and axonal regrowth persisted up to 6 months after the injury,even when treatment was delayed for 3 months to mimic chronic spinal cord *** findings collectively show promising evidence for a combinatorial strategy with chondroitinase ABC and Schwann cells in promoting remodeling and recovery of function following spinal cord injury.

关键词： axonal regrowth bladder function chondroitinase ABC functional recovery glial scar lentivirus migration Schwann cell spinal cord injury transplantation

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Coupling Vibration of Simply-Supported Damping Beam Carrying a Moving Mass

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Acta Mechanica Solida Sinica 2022年第6期35卷 972-978页

作者： Jingjing Hu Weipeng Hu chuan xiao Zichen deng School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710072China School of Civil Engineering and Architecture Xi’an University of TechnologyXi’an710048China State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China Xi’an University of TechnologyXi’an710048China China Research and Development Academy of Machinery Equipment Beijing100089China

The coupling dynamic problems,such as the vehicle-bridge interaction problem,are difficult to be *** this paper,the generalized multi-symplectic approach is employed to investigate the coupling dynamic behaviors in the vehicle-bridge interaction system.A simply-supported damping beam model carrying a moving mass is considered and the generalized multi-symplectic form with the dynamical symmetry breaking factors is deduced *** then,Preissmann’s scheme is employed to discretize the generalized multi-symplectic form,and the discrete structure-preserving condition for the numerical scheme is *** to the discrete structure-preserving condition,the permitted moving speed of the mass with different damping factors and different time step lengths is obtained to ensure the structure-preserving properties of the numerical ***,the effects of the damping factor of the beam and the moving speed of the mass on the vibration of the beam are investigated by Preissmann’s *** main contribution of this work is to provide a structure-preserving analysis approach for the vehicle-bridge interaction problem.

关键词： Vehicle-bridge interaction Dynamical symmetry breaking Generalized multi-symplectic Hamiltonian Moving mass

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Highly active sites of low spin Fe^(Ⅱ)N_(4)species:The identification and the ORR performance

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Nano Research 2021年第1期14卷 122-130页

作者： Huizhu Cai Bingbing Chen xiao Zhang Yuchen deng Dequan xiao Ding Ma chuan Shi State Key Laboratory of Fine Chemicals College of Chemical EngineeringDalian University of TechnologyDalian 116024China College of Chemistry and Molecular Engineering and College of Engineering Peking UniversityBeijing 100871China Center for Integrative Materials Discovery Department of Chemistry and Chemical EngineeringUniversity of New HavenCT 06516USA

Over recent years,catalytic materials of Fe-N-C species have been recognized being active for oxygen reduction reaction(ORR).However,the identification of active site remains challenging as it generally involves a pyrolysis process and mixed components being *** Fe_(3)C/C and Fe_(2)N/C samples were synthesized by temperature programmed reduction of Fe precursors in 15%CH_(4)/H_(2)and pure NH_(3),*** acid leaching of Fe_(2)N/C sample,only single sites of FeN_(4)species were presented,providing an ideal model for identification of catalytic functions of the single sites of FeN_(4)in ORR.A correlation was conducted between the concentration of Fe^(Ⅱ)N_(4)in low spin state by Mossbauer spectra and the kinetic current density at 0.8 V in alkaline media,and such a structure-performance correlation assures the catalytic roles of low spin Fe^(Ⅱ)N_(4) species as highly active sites for the ORR.

关键词： single sites of FeN_(4) oxygen reduction reaction structure-performance correlation electrocatalysis

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Reconstruction of the Sturm-Liouville operator with discontinuities from a particular set of eigenvalues

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Applied Mathematics(A Journal of Chinese Universities) 2018年第2期33卷 225-233页

作者： XU xiao-chuan YANG chuan-fu Department of Applied Mathematics School of Science Nanjing University of Science and Technology

Sturm-Liouville operators on a finite interval with discontinuities are considered. We give a uniqueness theorem for determining the potential and the parameters in boundary and under discontinuous conditions from a particular set of eigenvalues, and provide corresponding reconstruction algorithm, which can be applicable to McLaughlin-Rundell＇s uniqueness theorem （see J. Math. Phys. 28, 1987）.

关键词： Sturm-Liouville operator discontinuous condition inverse spectral problem reconstruction al-gorithm

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黄原胶生物聚合物改良膨胀土裂隙演化规律研究

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岩土工程学报 2025年第1期47卷 106-114页

作者：欧阳淼张红日邓人睿王桂尧肖杰赵亚长沙理工大学土木工程学院湖南长沙410114 广西交科集团有限公司广西南宁530007 上海交通大学土木工程系上海200240 长沙理工大学交通运输工程学院湖南长沙410114

采用既可抑制膨胀土裂隙扩展,又不影响坡面植被生长的黄原胶生物聚合物对膨胀土进行改良,是膨胀土边坡生态防护新思路。对黄原胶改良膨胀土开展室内干湿循环试验,利用数字图像处理技术(PCAS)对裂隙发育的整个过程进行定量分析,探究了黄... 详细信息

采用既可抑制膨胀土裂隙扩展,又不影响坡面植被生长的黄原胶生物聚合物对膨胀土进行改良,是膨胀土边坡生态防护新思路。对黄原胶改良膨胀土开展室内干湿循环试验,利用数字图像处理技术(PCAS)对裂隙发育的整个过程进行定量分析,探究了黄原胶掺量对膨胀土裂隙形态特征指标的影响规律,并通过扫描电镜(SEM)、X射线衍射(XRD)试验分析了改良前后膨胀土的微观结构与矿物成分的变化,结合膨胀率试验结果探讨了黄原胶对膨胀土的改良机理。研究结果表明,黄原胶的掺入可以有效提高膨胀土的保水性和抗裂性,试样的平均失水速率和裂隙率均随着掺量的增加呈减小趋势;黄原胶能够降低干湿循环效应对膨胀土的影响,将裂隙宽度控制在较小范围内,增湿过程中易闭合;黄原胶主要通过两个方面抑制膨胀土开裂,一方面通过成键和胶结作用与土颗粒形成“桥联”结构,整体增强土体的抗拉强度;另一方面通过填充和成膜作用阻隔水分与土颗粒接触,减小黏土矿物的水化膜厚度。

关键词：道路工程黄原胶生物聚合物干湿循环裂隙微观结构

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Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

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Traditional Medicine Research 2025年第1期10卷 27-43页

作者： Shi-Bo Feng Hai-Hui Jiang Hui-Li Kang Yi Jiang Hua-Wei Zhang xiao-Mei Song Yu-Ze Li Wen-Li Huang Dong-Dong Zhang Chong deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

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Evaluation on cutting performance of novel PDC cutter for pipe jacking machine

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Underground Space 2024年第1期14卷 34-52页

作者： Long-chuan deng Yi-Xiang Yuan xiao-Zhao Li Qian-Wei Zhuang Chi Zhang Yi-Wei Chen School of Earth Sciences and Engineering Nanjing UniversityNanjingJiangsu 210023China Shanghai Tunnel Engineering Co.Ltd. Shanghai 200232China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyXuzhouJiangsu 221116China School of Mechanics and Engineering Science Shanghai UniversityShanghai 200444China

It is inevitable to cut reinforced concrete(RC)appeared in cross passage of city metro by cutting tools when constructing in densely populated *** previous cutters employed to cut RC are insufficient and easily damaged,so a new polycrystalline diamond compact(PDC)cutter is used to solve this *** on the theoretical analysis of cutting mechanism,both circular and tapered PDC cutters with cutting edge angle of 90and negative front rack angle of 10are used to cut *** peeling and breaking patterns of cutting concrete are proposed,the nodular and grainy chips are the preferred modes in cutting steel *** LS-DYNA is employed to investigate the cutting performance in *** simulation results show that the average and peak cutting forces increase with the growth of penetration depth,cutting speed,and roundness,and subsequently the recommended penetration depth less than 1.2 mm is obtained to cut RC due to the existence of steel ***,the linear cutting platform is adopted to investigate the force ability and damage state of PDC *** is concluded that the cutting force increases abruptly and fluctuates heavily when cutting the coarse *** patterns occurred in both numerical and experimental results are generally ***,the steel bar is pulled out and the PDC cutter is damaged at the penetration depth of 0.8 mm,while a good cut occurs at the penetration depth of 0.3 *** tapered PDC cutter with a relatively low cutting force is prone to be broken compared with circular PDC *** is suggested that the circular PDC cutter at the penetration depth of 0.3 mm should be used to cut RC in practical engineering.

关键词： PDC cutter RC Pipe jacking machine Linear cutting tests Damage and wear LS-DYNA

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Numerical study on the case effect of a bomb air explosion

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Defence Technology（防务技术） 2021年第4期17卷 1461-1470页

作者： Guo-qiang deng xiao Yu Institute of Defense Engineering AMSPLABeijing100850China

When considering the bomb explosion damage effect,the air shock wave and high-speed fragments of the bomb case are two major *** experiments,the air shock wave was studied by the bare explosives superseding the real cased bomb;in contrast,the bomb case influence was ignored to reduce *** air explosion simulations of the MK84 warhead with and without the case were *** numerical simulation results showed that the bomb case significantly influenced the shock wave generated by the bomb:the spatial distribution of shock wave in the near field changed,and the peak value of shock wave was *** of the case and kinetic energy of the fragmentation consumed 3 and 38% of the explosion energy,*** increasing factors of the peak overpressure induced by the bare explosive on the ground and in the air were 1.43-3.04 and 1.37-1.57,*** typical stages of case breakage were *** mass distribution of the fragments follows the Mott *** initial velocity distribution of the fragments agreed well with the Gurney equation.

关键词： Explosion Cased bomb Bare explosive Numerical simulation MK84

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刚构体系斜拉桥塔柱计算长度系数求解方法研究

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工程力学 2025年第1期42卷 44-52页

作者：康厚军钱登宇苏潇阳张晓宇丛云跃广西大学土木建筑工程学院南宁530004 广西交通设计集团有限公司南宁530004

斜拉桥塔柱计算长度的取值是验算其承载能力极限状态的关键问题。基于斜拉桥中拉索对桥面梁起弹性支撑作用的受力特点，针对刚构体系斜拉桥塔柱计算长度取值问题提出了一个新方法和力学模型，即传递矩阵法和三梁离散弹簧模型。该模型将... 详细信息

斜拉桥塔柱计算长度的取值是验算其承载能力极限状态的关键问题。基于斜拉桥中拉索对桥面梁起弹性支撑作用的受力特点，针对刚构体系斜拉桥塔柱计算长度取值问题提出了一个新方法和力学模型，即传递矩阵法和三梁离散弹簧模型。该模型将塔柱和主梁视为考虑轴向变形影响的欧拉伯努利梁，将斜拉索简化为有质量的弹簧。利用传递矩阵法进行求解，通过考虑边界条件以及连续性条件，推导出系统的稳定特征方程，进而得出塔柱面内稳定计算长度系数。最后，通过算例分析和有限元计算结果的对比，验证了该文中所提出的理论和方法的可行性，能够满足刚构体系独塔斜拉桥计算分析和塔柱计算长度评估的需要。

关键词：斜拉桥塔柱传递矩阵法计算长度系数有限元方法

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