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Energy & Environmental Materials 2023年第2期6卷 152-158页

作者： Haiyan Fan Xinxin zhang Yuxing Zhao Jianhua Xiao Hua Yuan Guang Wang Yitao lin Jifang zhang Ludi Pan Ting Pan Yang Liu Yuegang zhang State Key Laboratory of Low-Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China

A high-performance all-inorganic magnesium-lithium chloride complex(MLCC)electrolyte is synthesized by a simple room-temperature reaction of LiCl with MgCl_(2) in tetrahydrofuran(THF)*** dynamics simulation,density functional theory calculation,Raman spectroscopy,and nuclear magnetic resonance spectroscopy reveal that the formation of[Mg_(x)Li_(y)Cl_(2x+y)·nTHF]complex solvation structure significantly lowers the coordination number of THF in the first solvation sheath of Mg^(2+),which significantly enhances its de-solvation *** MLCC electrolyte presents a stable electrochemical window up to 3.1 V(vs Mg/Mg^(2+))and enables reversible cycling of Mg metal deposition/stripping with an outstanding Coulombic efficiency up to 99%at current densities as high as 10 mA cm^(-2).Utilizing the MLCC electrolyte,a Mg/Mo_(6)S_(8) full cell can be cycled for over 10000 cycles with a superior capacity retention of 85 mA h g^(-1) under an ultrahigh rate of 50 C(1 C=128.8 mA g^(-1)).The facile synthesis of highperformance MLCC electrolyte provides a promising solution for future practical magnesium batteries.

关键词： cycle life electrolyte Mg battery solvation structure

Formation mechanisms of nitrous acid(HONO) during the haze and non-haze periods in Beijing,China

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Journal of Environmental Sciences 2022年第4期34卷 343-353页

作者： Deng lin Shengrui Tong Wenqian zhang Weiran Li Fangjie Li Chenhui Jia Gen zhang Meifang Chen Xinran zhang Zhen Wang Maofa Ge Xiang He Key Laboratory of Oasis Ecology College of Resource and Environment SciencesXinjiang UniversityUrumqi 830046China State Key Laboratory for Structural Chemistry of Unstable and Stable Species Chinese Academy of Sciences Research/Education Center for Excellence in Molecular SciencesInstitute of Chemistry Chinese Academy of SciencesBeijing 100190China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China College of Chemistry Liaoning UniversityShenyang 110036LiaoningChina State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry of CMA Institute of Atmospheric CompositionChinese Academy of Meteorological SciencesBeijing 100081China College of Chemistry and Material Science Anhui Normal UniversityWuhu 241000China

As an important precursor of hydroxyl radical(OH),nitrous acid(HONO)plays a significant role in atmospheric ***,an observation of HONO and relevant air pollutants in an urban site of Beijing from 14 to 28 April,2017 was *** distinct peaks of HONO concentrations occurred during the *** contrast,the concentration of particulate matter in the first period(periodⅠ)was significantly higher than that in the second period(periodⅡ).Comparing to HONO sources in the two periods,we found that the direct vehicle emissionwas an essential source of the ambient HONO during both periods at night,especially in periodⅡ.The heterogeneous reaction of NO_(2)was the dominant source in periodⅠ,while the homogeneous reaction of NO with OH was more critical source at night in periodⅡ.In the daytime,the heterogeneous reaction of NO_(2)was a significant source andwas confirmed by the good correlation coefficients(R^(2))between the unknown sources(P_(unknown))with NO_(2),PM_(2.5),NO_(2)×PM_(2.5)in periodⅠ.Moreover,when solar radiation and OH radicals were considered to explore unknown sources in the daytime,the enhanced correlation of P_(unknown)with photolysis rate of NO_(2)and OH(J_(NO_(2))×OH)were 0.93 in periodⅠ,0.95 in periodⅡ.These excellent correlation coefficients suggested that the unknown sources released HONO highly related to the solar radiation and the variation of OH radicals.

关键词： Nitrous acid(HONO) Source Formation mechanisms OH radicals

Cu/Li Ratio on the microstructure Evolution and Corrosion Behaviors of Al–xCu–yLi–Mg Alloys

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Acta Metallurgica Sinica(English Letters) 2020年第9期33卷 1201-1216页

作者： Dan-Yang Liu Jin-Feng Li Yong-Cheng lin Peng-Cheng Ma Yong-Lai Chen Xu-Hu zhang Rui-Feng zhang School of Materials Science and Engineering Central South UniversityChangsha 410083China School of Mechanical and Electrical Engineering Central South UniversityChangsha 410083China Key Laboratory of Nonferrous Materials Science and Engineering of ministry of Education Central South UniversityChangsha 410083China Aerospace Research Institute of Materials and Processing Technology Beijing 100076China

The microstructure evolution and the corrosion feature of Al–x Cu– y Li–Mg alloys( x : y = 0.44, 1.65 and 4.2) were systematically investigated under the same artificial aging conditions. The relationships between types of precipitates and mechanical performance, as well as electrochemical behaviors, were discussed. Our results show that different types of precipitates can be obtained in alloys with different Cu/Li mass ratios, which significantly influences the mechanical performance of the alloys and substantial corrosion behaviors. Specifically, the analogous corrosion evolution in the aging Al– x Cu– y Li–Mg alloys was first ascertained to be derived from the growth mechanism of the precipitates at the grain boundary(GB). Moreover, a small number of GB precipitates can be obtained in the aged alloy with the lowest Cu/Li mass ratio, thereby resulting in the largest intergranular corrosion resistance. A higher proportion of the GB T1 phase in the continuous precipitates induces higher corrosion sensitivity in alloy with a high Cu/Li mass ratio.

关键词： Al–Cu–Li–Mg alloy Cu/Li mass ratio microstructure evolution Corrosion behaviors

Designing new work-hardenable ductile Ti-based multilayered bulk metallic glass composites with ex-situ and in-situ hybrid strategy

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Journal of Materials Science & Technology 2020年第15期47卷 128-138页

作者： Shifeng lin Zhengwang Zhu Shaofan Ge Long zhang Dingming Liu Yanxin Zhuang Huameng Fu Hong Li Aimin Wang Haifeng zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Laboratory of Electromagnetic Processing of Materials(ministry of Education) Northeastern UniversityShenyang 110819China School of Material Science and Engineering Northeastern UniversityShenyang 110819China

To overcome the trade-off between the devisable micro structure and the excellent tensile ductility of bulk metallic glass composites(BMGCs),a novel ex-situ and in-situ hybrid strategy is successfully proposed to design a series of the work-hardenable ductile Ti-based multilayered BMGCs(ML-BMGCs).The asprepared ML-BMGCs,consisting of α-phases,β-phases and amorphous phases,exhibit a controllable multilayered structure of the Ti layers and the amorphous layers with alternative *** size and volume fraction of the crystalline phases are tuned by Nb *** is found that the ML-BMGCs possess a suitable size and volume fraction of the crystalline phases when Nb microalloying content are5%(at.) or 8%(at.),and they obtain an optimum combination of the specific strength of 243 MPa g kg-1 or 216 MPa g kg-1,and tensile plasticity of 4.33%±0.1 % or 5.10%±0.1%.The deformation mechanism of the as-prepared ML-BMGCs during tension is also *** ex-situ Ti layers and in-situ dendrites together effectively serve as absorbers to suppress the propagation of shear bands and multiply shear *** the defo rmation of ex-situ α-Ti phases by dislocation slip and the transformation from in-situ metastable β-Ti phase to orthorhombic α-Ti during tension impart significant work-hardening capability to the ML-B *** present study provides a guidance of developing novel high-performance BMGCs with a controllable micro structure.

关键词： Hybrid Strategy ML-BMGCs Tensile property Deformation Mechanism

Giant piezotronic effect in ferroelectric field effect transistor

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Nano Research 2024年第9期17卷 8465-8471页

作者： Haiming zhang Mengshuang Chi Shidai Tian Tian Liang Jitao Liu Xiang zhang lingyu Wan Zhong lin Wang Junyi Zhai Center on Nanoenergy Research School of Physical Science&TechnologyGuangxi UniversityNanning 530004China Beijing Key Laboratory of micro-Nano Energy and Sensor Center for High-Entropy Energy and SystemsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of ScienceBeijing 100049China School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054China Georgia Institute of Technology AtlantaGA 30332USA

The piezotronics effect utilizes a piezopotential to modulate and control current in *** materials,as a type of piezoelectric materials,possess piezoelectric coefficients that are significantly larger than those found in conventional piezoelectric ***,we propose a strain modulated ferroelectric field-effect transistor(St-FeFET)utilizing external strain instead of gate voltage to achieve ferroelectric modulation,which eliminates the need for gate *** applying a very small strain(0.01%),the St-FeFET can achieve a maximum on-off current ratio of 1250%and realizes a gauge factor(GF)of 1.19×10^(6),which is much higher than that of conventional strain *** work proposes a new method for realizing highly sensitive strain sensors and presents innovative approaches to the operation methods of ferroelectric field-effect transistors as well as potential applications for coupling of strain sensors and various devices across different fields.

关键词： ferroelectric field-effect transistors piezotronics [Pb(Mg_(1/3)Nb_(2/3))O_(3)]_((1-x)^(-))[PbTiO_(3)]_(x)(PMN-PT) strain sensors

Incremental value of contrast echocardiography in the diagnosis of left ventricular noncompaction

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Frontiers of Medicine 2016年第4期10卷 499-506页

作者： Xiaoxiao zhang Li Yuan linli Qiu Yali Yang Qing Lv lin Li Jing Wang lin He Li zhang Xinfang Wang mingxing Xie Xu Yu Jin Department of Ultrasound Union Hospital Tongii Medical College Huazhong University of Science and Technology Wuhan 430022 China Oxford Echo Core Lab NDCLS Radcliffe Department of Medicine University of Oxford John Radcliffe Hospital Oxford OX3 9DU UK

Contrast echocardiography with left ventricular opacification （LVO） improves the definition of endocardium in two-dimensional echocardiography （2DE）. This study was aimed to determine whether LVO offered added diagnostic value in noncompaetion of left ventricular myocardium （NCVM）. A total of 85 patients （40± 20 years, 54 males） with suspected NCVM were subjected to transthoracic 2DE and LVO, and 40 healthy volunteers were examined with 2DE and assigned as control subjects. The location of NCVM, the thickness ratio of noncompacted to compacted myocardium （NCR）, and the cavity size and ejection fraction of LV were quantified. Results revealed that NCVM was mainly located in the LV medium （53.2%）, apical （46.2%） segments, and lateral wall （39.8%）. The NCR obtained through LVO was greater than that detected through 2DE （4.2 ±1.3 vs. 3.3 ±1.2, P 〈 0.001）, and higher inter-correlations and less intra- and inter-observer variabilities were determined in the former than in the latter. The NCVM detection rates were also increased from 63.5% via 2DE to 83.5% via LVO and 89.4% via 2DE combined with LVO （2DE ＋ LVO）（P = 0.0004）. The LV cavity size was greater and the LV ejection fraction （LVEF） was lower in the NCVM patients than in the control group （P 〈 0.01）. In the NCVM group, the LV cavity size was higher and the LVEF was lower in LVO than in 2DE （P 〈 0.01）. In conclusion, contrast echocardiography contributes significant sensitivity and reproducibility to routine transthoraeic echoeardiography in NCVM diagnosis. Therefore, this technique should be clinically performed to diagnose suspected NCVM.

关键词： echocardiography left ventricular noncompaction cardiomyopathy echo contrast media

基于国际标准的输电线路铁塔生产企业温室气体排放量化及减排对策研究

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中国资源综合利用 2025年第1期43卷 253-258页

作者：张鹏叶健诚韩霖黄体斌李想北京创拓国际标准技术研究院有限责任公司北京100032 国网电力科学研究院有限公司南京210000

输电线路铁塔生产企业在我国分布较广,铁塔是电网和电力系统的重要基础设施,开展生产制造环节温室气体排放量化和减排策略研究,能够帮助铁塔行业在碳达峰碳中和以及新型电力系统发展背景下科学设定减碳目标,促进行业绿色低碳发展。根据... 详细信息

输电线路铁塔生产企业在我国分布较广,铁塔是电网和电力系统的重要基础设施,开展生产制造环节温室气体排放量化和减排策略研究,能够帮助铁塔行业在碳达峰碳中和以及新型电力系统发展背景下科学设定减碳目标,促进行业绿色低碳发展。根据温室气体排放量化的国际标准,结合某大型输电线路铁塔生产企业的实际生产运行数据,开展算例分析,使用联合国政府间气候变化专门委员会(Intergovernmental Panel on Climate Change,IPCC)方法学和国际认可度较高的Ecoinvent数据库量化该企业2023年范围1、范围2和范围3的温室气体排放量。结果显示,组织层面,该企业温室气体排放量共计165942.36 t CO_(2)e,金属原料获取环节的温室气体排放量占比较高,达到92.76%。结合排放数据与企业实际情况,提出针对性的温室气体减排对策,最后对未来研究方向进行展望。总体来说,要建立绿色供应链体系,提高金属原料回收利用率,使用清洁能源,更换焊接保护气,使用高效防腐工艺。研究成果有助于规范输电线路铁塔企业温室气体排放计量,提高铁塔企业温室气体排放的管理能力,打破绿色贸易壁垒,促进行业绿色低碳发展。

关键词：铁塔温室气体排放国际标准温室气体减排电力系统

文旅融合背景下旅游管理专硕产教融合模式与路径

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黑龙江教育(高教研究与评估) 2025年第1期 72-74页

作者：张维亚汤澍徐子琳金陵科技学院江苏南京211169

在数字经济的加持下,文旅融合不断催生文旅行业产生新的业态、新的产业和新的市场,文旅行业对旅游专业高层次应用型人才的需求也更加迫切,高校旅游管理专硕人才培养模式改革也势在必行。在阐释文旅融合内涵和分析文旅融合对旅游行业和... 详细信息

在数字经济的加持下,文旅融合不断催生文旅行业产生新的业态、新的产业和新的市场,文旅行业对旅游专业高层次应用型人才的需求也更加迫切,高校旅游管理专硕人才培养模式改革也势在必行。在阐释文旅融合内涵和分析文旅融合对旅游行业和学科影响的基础上,从产教融合的视角研判旅游管理专硕人才培养过程中面临的困难,提出文旅融合背景下旅游管理专硕产教融合模式与路径。

关键词：文旅融合产教融合旅游管理专业硕士

A novel long persistent luminescent material CaGeO_(3):Tb^(3+)with photo-stimulation properties

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Journal of Rare Earths 2024年第7期42卷 1233-1239,I0002页

作者： Wei Meng Xiaoyan Fu Tongyan lin Zewen Liu Naihui Chen Jiaxu zhang Runyao Liu Rujun Yang Long Chen Hongwu zhang School of Chemistry and Material Sciences Ludong UniversityYantai264025China College of Materials Science and Engineering Xiamen University of TechnologyXiamen361024China College of Materials Xiamen UniversityXiamen361005China

A novel green long afterglow material CaGeO_(3):Tb^(3+)was synthesized by high temperature solid phase *** to the experimental results,CaGeO_(3):Tb^(3+)is a green long persistent luminescent(LPL)material with excellent ***_(3):Tb^(3+)shows LPL emission peak at 442,490.9,548.7,588.5 and 623.8 nm,corresponding to ^(5)D_(3) to^(7)F_(4)and^(5)D_(4)to^(7)F_(J)(J=6,5,4,3)transitions of Tb^(3+).Its CIE coordinates are(0.27,0.50),indicating that the afterglow emission is close to the light of green *** addition,after the excitation source is turned off,the afterglow time is longer than 90 *** an interval of 7 h,the photo-stimulation luminescence(PSL)can be observed by using 980 nm laser cyclic *** thermoluminescence(ThL)results show that there are three types of traps in the material and their depths are 0.666,0.774 and 0.892 eV respectively,which are caused by the doping of Tb^(3+).All the results show that CaGeO_(3):Tb^(3+)is an excellent long afterglow luminescent material.

关键词： Long persistent luminescence Photo-stimulation Trap CaGeO_(3):Tb^(3+) Rare earths

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统一战线视域下高校意识形态安全建设探析

未来与发展 2025年第2期49卷 141-146页

作者：张金安林子瑞田泽易思铭郑州升达经贸管理学院党委统战部河南郑州451191 信阳师范大学音乐与舞蹈学院河南信阳464000 河海大学商学院江苏南京211100 山东大学政治学与公共管理学院山东青岛266200

高校作为知识分子的聚集地,是意识形态安全建设的前沿阵地,也是统一战线工作的战略要地。新时代背景下,统战对象结构多元化、高校意识形态安全建设认知偏差、西方霸权行径等因素给高校意识形态安全建设带来威胁。统一战线作为凝聚人心... 详细信息

高校作为知识分子的聚集地,是意识形态安全建设的前沿阵地,也是统一战线工作的战略要地。新时代背景下,统战对象结构多元化、高校意识形态安全建设认知偏差、西方霸权行径等因素给高校意识形态安全建设带来威胁。统一战线作为凝聚人心的工作,与高校意识形态安全建设在政治上高度聚合、内容上相互贯通、逻辑上相辅相成,高校要将思想和行动统一到中央决策部署上来,科学把握统一战线与意识形态安全建设的内在关联,探索统一战线视域下高校意识形态安全建设的实践路径,从而增强高校师生的思想共识和人心力量,为立德树人营造安全稳定的校园环境。

关键词：高校意识形态安全建设统一战线