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Chinese Chemical Letters 2024年第3期35卷 453-460页

作者： Kang Yang Long Li Yuanbin Xiao Qiaoli Zhang Chenpeng Xi Borong Li Yan Yu Chengkai Yang Key Laboratory of Advanced Materials technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The development of lithium-metal batteries(LMBs)is seriously restricted by the out-of-co.trol dendrites growth and infinite volume ***,a pervasive organic-inorganic layer co.struction strategy is reported for the co.posite lithium metal anode with co.gener-derived organic-inorganic solid electrolyte interphase(SEI).In this strategy,the organic-inorganic ag@polydopamine(ag@PDA)layer is co.ted on the arbitrary substrates by a simple two-step *** thin and stable co.gener-derived SEI is insitu formed with fewer inorganic co.ponents and more organic co.ponents during charging/*** polydopamine with sufficient adhesion groups and lithiophilic ag layer realize near-zero nucleation overpotential during lithium *** low interface resistance and stable lithium deposition are ***,the practical areal and volumetric capacities of the co.posite anode with three-dimensional co.per(3DCu)as the substrate are 10 mAh/cm^(2)and 1538 mAh/cm^3(*** mass of anode).The symmetrical cell shows very low polarization voltage(10 mV)and more than 2500 h cycles life at 1 mA/cm^(2)(1 mAh/cm^(2)).The LiNi_(0.8)co.(0.1)Mn_(0.1)O_(2)(NCM811)-based full cells show improved capacity retention(82%)after 100 cycles at 0.5 *** modified lithiophilic anode with co.gener-derived interphase provides a promising strategy to realize the next-generation dendrite-free LMBs.

关键词： Lithium metal anode co.gener-derived Lithiophilicity Volumetric capacity Organic-inorganic interphase

Influences on Generation of White Etching Crack Networks in Rolling Bearings

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Journal of Mechanics Engineering and Automation 2016年第2期6卷 85-94页

作者： Joerg Loos Toni Blass Joerg Franke Wolfram Kruhoeffer Iris Bergmann Schaeffler technologies ag & co. kg Herzogenaurach 91074 Germany schaejfler technologies ag & co. kg Schweinfurt Germany

In rare cases rolling bearings fail by WEC （white etching crack） damage before reaching their calculated rating life, if so called additional loads are applied on the bearing in addition to the normal Hertzian stress （PHz）. A number of additional loads have been identified by means of tests with rolling bearings. These can be small direct currents as a result of electrostatic charge or large alternating currents from inverter-fed drives that unintentionally flow through the bearing. WEC damages can also be initiated by a pure mechanical additional load which is dependent on factors including the bearing kinematics but also on the dynamics of the drive train. The current state of knowledge on this subject is presented and taken as the basis for developing a hypothesis on the WEC damage mechanism. If load situations critical for WEC cannot be avoided, the risk of WEC can be co.siderably reduced by the selection of suitable materials and co.tings as well as, in some cases, of suitable lubricants.

关键词： Rolling bearing WEC (white etching crack) WSF (white structure flaking) hydrogen fatigue.

Manipulation of Na3V2（PO4）2F3 via aluminum doping to alter local electron states toward an advanced cathode for sodiumion batteries（英文）

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Rare Metals 2024年第9期43卷 4253-4262页

作者： Shi-Min Wang Jin-Qi Li Li Xu Meng-Jiao Sun Wen-Jin Huang Qing Liu Fu-Tong Ren Yong-Jiang Sun Ling-Yan Duan Hang Ma Hong Guo International Joint Research Center for Advanced Energy Materials of Yunnan Province Yunnan Key Laboratory of Carbon Neutrality and Green Low-Carbon Technologies School of Materials and Energy Yunnan University co.lege of Environmental and Chemical Engineering Metallurgy College R & D Center Yunnan Yuntianhua Co. Ltd International Joint Research Center for Advanced Energy Materials of Yunnan Province Yunnan Key Laboratory of Carbon Neutrality and Green Low-Carbon Technologies School of Materials and EnergySouthwest United Graduate School Yunnan University

With its unique 3D skeleton structure and exceptional cyclic stability,the Na+superionic co.ducto（NASIco.）-type Na3V2（PO4）2F3（NVPF） has been co. sidered as a co.petitive cathode material for advanced Na ion ***,the release of fluorine during th heat treatment leads to the formation of an additional phas Na3V2（PO4）3（NVP）,which results in a low-voltage plateau and co.promises the energy ***,we modulat the local electronic states of the V site by aluminum sub stitution to strengthen the stability of *** results co.firm that the aluminum introduction not only changes the loca electron states of V sites,significantly reducing the for mation of NVP by-product from 6.71 wt% to 1.01 wt% but also effectively reduces the band gap,improving th electronic co.ductivity of *** optimized Na3V1.9Al0.1（PO4）2F3exhibits higher energy density of 340 Wh·kg-1and excellent rate performance of 106.7 mAh·g-1at 10C co.pared with the pristine cathode.

关键词： Cathode Doping Electrochemistry NASIco. Sodium-ion energy storage batteries

Insight study of rare earth elements in PM_(2.5)during five years in a Chinese inland city:co.position

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Journal of Environmental Sciences 2024年第4期138卷 439-449页

作者： Yi-Wen Shen Chang-Xian Zhao Hao Zhao Shuo-Fei Dong Qi Guo Jiao-Jiao Xie Mei-Ling Lv Chun-Gang Yuan Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants co.trol Department ofEnvironmental Science&EngineeringNorth China Electric Power UniversityBaoding 071000China MOE Key Laboratory of Resources and Environmental Systems Optimization College of Environmental Science and EngineeringNorth China Electric Power UniversityBeijing 102206China agilent technologies co.Ltd.(China) Beijing 100102China

The booming development of rare earth industry and the extensive utilization of its products acco.panied by urban development have led to the accelerated accumulation of rare earth elements(REEs)as emerging pollutants in atmospheric *** this study,the variation of REEs in PM_(2.5)with urban(a non-mining city)transformation was investigated through five co.secutive years of sample *** co.positional variability and provenance co.tribution of REEs in PM_(2.5)were characterized,and the REEs exposure risks of children and adults via inhalation,ingestion and dermal absorption were also *** results showed an increase in the total REEs co.centration from 46.46±35.16 mg/kg(2017)to 81.22±38.98 mg/kg(2021)over the five-year period,with Ce and La making the largest *** actual increment of industrial and traffic emission source among the three pollution sources was 1.34 ng/m^(3).co.l co.bustion source displayed a downward *** was the main exposure pathway for REEs in PM_(2.5)for both children and *** co.tributed the most to the total intake of REEs in PM_(2.5)among the population,followed by La and *** exposure risks of REEs in PM_(2.5)in the region were relatively low,but the trend of change was of great *** was strongly reco.mended to strengthen the co.cern about traffic-related non-exhaust emissions of particulate matter.

关键词： Rare earth elements Exposure risks Pollution sources Traffic-related non-exhaust emissions

Effects of co.bined soluble gas stabilization， modified atmosphere packaging and co.d plasma on co.trolling chilled chicken breasts spoilage

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Food Science and Human Wellness 2024年

作者： Jing Li Chen Xu Yifeng Lu Xiaoming Wang Shuangshuang Jin Yun Bai Xia Wang Xinglian Xu Minyi Han Key Laboratory of Meat Processing and Quality co.trol， Ministry of Education， Jiangsu Synergetic Innovation Center of Meat Production and Processing， and co.lege of Food Science and Technology， Nanjing agricultural University Wens Foodstuff Group co.， Ltd.

The hurdle technology for food preservation effectively addresses the limitations of individual antimicrobial technologies by integrating their strengths. It can not only prolong the storage time of food but also maintains its high quality. In this study， three antimicrobial and bactericidal technologies， namely soluble gas stabilization (SGS)， modified atmosphere packaging (MAP)， and co.d plasma (CP)， were applied to chilled chicken breasts. The packaging， total viable co.nt， and physico.hemical properties of chilled chicken breasts after treatments and storage at 4℃ were monitored. The microbial diversity at the initial and end points of the storage time of each group was also analyzed. The results indicated that a (3-5) h SGS treatment can effectively increase the proportion of carbon dioxide in the MAP during the storage process of chilled chicken breasts， thereby alleviating the packaging co.lapse problem. Simultaneously， the effect of SGS， MAP， and CP co.binational treatments significantly extended the storage time of chilled chicken breasts while maintaining the physico.hemical qualities of samples. co.pared to the co.trol group， the total viable co.nt (TVC) of chicken breast treated with SGS， MAP， and CP treatments decreased by 0.58 log CFU/g at 0 d. The shelf life was extended by 5 days. After 8 d， the total volatile basic nitrogen (TVB-N) was 26.67 vs 19.50 mg/100g， thiobarbituric acid reactive substances (TBARS) was 0.99 vs 0.72 mg MDA/kg， and TVC was 8.22 vs 6.52 log CFU/g. High-throughput sequencing results showed that SGS and MAP treatments significantly reduce the proportion of Pseudomonas and Psychrobacter， which are sensitive to carbon dioxide， in the total bacterial genera. This study undersco.es the potential of integrating multiple antimicrobial technologies for effective food preservation.

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Development of ag-Cu-Zn-Sn brazing filler metals with a 10 weight-% reduction of silver and same liquidus temperature

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China Welding 2014年第4期23卷 25-31页

作者： Daniel Schnee Gunther Wiehl Sebastian Starck Chert Kevin Umico.e ag & co. kg Business Unit Technical MaterialsRodenbacher Chaussee 4 63457 Hanau-Wolfgang Germany.

With BrazeTec BlueBraze the manufacturers in HVACR industry have an alternative filler metal with 10 weight-% less silver but same brazing temperatures. The performance of these new alloys has been evaluated in several tests. The evaluation included wetting investigations, metallographic examinations, joint strength at different temperatures and pulsation and co.rosion resistance. The results of these tests will be presented in this paper.

关键词： silver brazing filler metal shear strength co.rosion

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生物启发膜在水系镁离子电池阴极的界面工程

Science China Materials 2024年第8期67卷 2558-2566页

作者：洛古子呷苟倩志罗号燃陈昭宇邓江斌王凯鑫何玉婷李英芳王磊张奔郑玉杰李猛 National Innovation Center for Industry-Education Integration of Energy Storage Technology Xuefeng Mountain Energy Equipment Safety National Observation and Research StationMOE Key Laboratory of Low-Grade Energy Utilization Technologies and SystemsCQU-NUS Renewable Energy Materials&Devices Joint LaboratoryCollege of Energy&Power EngineeringChongqing UniversityChongqing 400044China Chongqing Windmagics Weichu Energy co. Ltd.Chongqing 401121China Southwest Technology and Engineering Research Institute Chongqing 400039China

受到水合镁离子的高脱溶能垒和不良界面水分解行为的限制,水系镁离子电池通常受制于缓慢的离子传输动力学和严重的阴极溶解.为了克服这些障碍,受细胞膜两亲性结构的启发,我们成功构建了一种由疏水性聚(3,4-乙二氧基噻吩)(PEDOT)和亲水性... 详细信息

受到水合镁离子的高脱溶能垒和不良界面水分解行为的限制,水系镁离子电池通常受制于缓慢的离子传输动力学和严重的阴极溶解.为了克服这些障碍,受细胞膜两亲性结构的启发,我们成功构建了一种由疏水性聚(3,4-乙二氧基噻吩)(PEDOT)和亲水性α-MnO_(2)基底组成的MnO_(2)碳基阴极.结合实验和理论计算结果分析,PEDOT层可以有效提高整体电极的导电性,降低水合Mg^(2+)的脱溶能垒,并抑制阴极溶解,从而提高复合电极的性能.因此,本文所制备的复合电极表现出优越的速率性能(58.4mA hg^(-1),3ag^(-1))和增强的长期循环稳定性(1000个循环后85.92mA hg^(-1),2ag^(-1)),优于原始的α-MnO_(2)阴极.这项基于生物启发设计理念的工作将为水合镁离子电池的发展提供创新方向.

关键词：镁离子电池复合电极生物启发传输动力学循环稳定性界面工程脱溶能垒

An Overview of Performance Characteristics, Experiencesand Trends of Aerospace Engine Bearings technologies

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Chinese Journal of Aeronautics 2007年第4期20卷 378-384页

作者： Ebert Franz-Josef Sales and Product Development Aerospace FAG Aerospace GmbH & Co. KG Schweinfurt D-97421 Germany

In this paper, the operating co.ditions, technical requirements, performance characteristics, design ideas, application experiences and development trends of aerospace engine bearings, including material technology, integration design and reliability, are reviewed. The development history of aerospace engine bearing is recalled briefly at first. Then today＇s material technologies and the high bearing performances of the bearings obtained through the new materials are introduced, which play important roils in the aeroengine bearing developments. The integration design ideas and practices are explained to indicate its significant advantages and importance to the aerospace engine bearings. And the reliability of the shaft-bearing system is pointed out and treated as the key requirement with goals for both engine and bearing. Finally, as it is believed that the co.rect design co.es from practice, the pre-qualification rig testing co.ducted by Fag Aerospace GmbH ＆ co. kg is briefly illustrated as an example. All these lead to the development trends of aerospace engine bearings from different aspects.

关键词： aerospace engine bearing performance characteristic material technology integrated bearing design reliability system co.t

co.pling of Adhesion and Anti‑Freezing Properties in Hydrogel Electrolytes for Low‑Temperature Aqueous‑Based Hybrid Capacitors

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Nano-Micro Letters 2024年第2期16卷 15-31页

作者： Jingya Nan Yue Sun Fusheng Yang Yijing Zhang Yuxi Li Zihao Wang Chuchu Wang Dingkun Wang Fuxiang Chu Chunpeng Wang Tianyu Zhu Jianchun Jiang Institute of Chemical Industry of Forest Products Chinese Academy of ForestryKey Laboratory of Biomass Energy and MaterialJiangsu ProvinceNanjing 210042JiangsuPeople’s Republic of China co.Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037JiangsuPeople’s Republic of China Energy technologies Area Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Materials Science and Engineering Clemson UniversityClemsonSC 29634USA

Solid-state zinc-ion capacitors are emerging as promising candidates for large-scale energy storage owing to improved safety,mechanical and thermal stability and easy-to-direct *** electrolytes are appealing solid-state electrolytes because of eco.friendliness,high co.ductivity and intrinsic ***,the electrolyte/electrode interfacial co.tact and anti-freezing properties of current hydrogel electrolytes are still challenging for practical applications of zinc-ion ***,we report a class of hydrogel electrolytes that co.ple high interfacial adhesion and anti-freezing *** synergy of tough hydrogel matrix and chemical anchorage enables a well-adhered interface between hydrogel electrolyte and ***,the co.perative solvation of ZnCl2 and LiCl hybrid salts renders the hydrogel electrolyte high ionic co.ductivity and mechanical elasticity simultaneously at low *** significantly,the Zn||carbon nanotubes hybrid capacitor based on this hydrogel electrolyte exhibits low-temperature capacitive performance,delivering high-energy density of 39 Wh kg^(-1)at-60°C with capacity retention of 98.7%over 10,000 *** the benefits of the well-adhered electrolyte/electrode interface and the anti-freezing hydrogel electrolyte,the Zn/Li hybrid capacitor is able to acco.modate dynamic deformations and function well under 1000 tension cycles even at-60°*** work provides a powerful strategy for enabling stable operation of low-temperature zinc-ion capacitors.

关键词： Interfacial adhesion Anti-freezing Hydrogel electrolytes Low-temperature hybrid capacitors Dynamic deformati

Efficacy and safety of human umbilical co.d-derived mesenchymal stem cells in the treatment of refractory immune thrombocytopenia:a prospective,single arm,phase I trial

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2250-2259页

作者： Yunfei Chen Yanmei Xu Ying Chi Ting Sun Yuchen Gao Xueqing Dou Zhibo Han Feng Xue Huiyuan Li Wei Liu Xiaofan Liu Huan Dong Rongfeng Fu Mankai Ju Xinyue Dai Wentian Wang Yueshen Ma Zhen Song Jundong Gu Wei Gong Renchi Yang Lei Zhang State Key Laboratory of Experimental Hematology National Clinical Research Centre for Blood DiseasesHaihe Laboratory of Cell EcosystemTianjin Key Laboratory of Gene Therapy for Blood DiseasesCAMS Key Laboratory of Gene Therapy for Blood DiseasesInstitute of Hematology&Blood Diseases HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeTianjin 300020China Tianjin Institutes of Health Science Tianjin 301600China National Clinical Research Center for Hematologic Diseases Jiangsu Institute of HematologyThe First Affiliated Hospital of Soochow UniversitySuzhou 215006China National Engineering Research Centre of Cell Products Tianjin Key Laboratory of Engineering Technologies for Cell PharmaceuticalAmCellGene Engineering Co.LtdTianjin 300457China School of Population Medicine and Public Health Chinese Academy of Medical Sciences and Peking Union Medical College100730 BeijingChina

Patients with refractory immune thrombocytopenia(ITP)frequently enco.nter substantial bleeding risks and demonstrate limited responsiveness to existing *** co.d-derived mesenchymal stem cells(UC-MSCs)present a promising alternative,capitalizing on their low immunogenicity and potent immunomodulatory effects for treating diverse autoimmune *** prospective phase I trial enrolled eighteen eligible patients to explore the safety and efficacy of UC-MSCs in treating refractory *** research design included administering UC-MSCs at escalating doses of 0.5×10^(6)cells/kg,1.0×10^(6)cells/kg,and 2.0×10^(6)cells/kg weekly for four co.secutive weeks across three co.orts during the dose-escalation phase,followed by a dose of 2.0×10^(6)cells/kg weekly for the dose-expansion *** events,platelet co.nts,and changes in peripheral blood immunity were monitored and reco.ded throughout the administration and follow-up ***,12(with an addition of three patients in the 2.0×10^(6)cells/kg group due to dose-limiting toxicity)and six patients were enrolled in the dose-escalation and dose-expansion phase,*** patients(13/18,72.2%)experienced one or more treatment emergent adverse *** adverse events occurred in four patients(4/18,22.2%),including gastrointestinal hemorrhage(2/4),profuse menstruation(1/4),and acute myocardial infarction(1/4).The response rates were 41.7%in the dose-escalation phase(5/12,two received 1.0×10^(6)cells/kg per week,and three received 2.0×10^(6)cells/kg per week)and 50.0%(3/6)in the dose-expansion *** overall response rate was 44.4%(8/18)among all enrolled *** sum up,UC-MSCs are effective and well tolerated in treating refractory ITP(*** ID:NCT04014166).

关键词： doses immunity treatment