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Nano Research 2022年第6期15卷 5123-5133页

作者： Anchun Tang Chubin Wan Xianhe Meng Xiangcao Li Xiaoyu Hu Miaofeng Huang xin ju Physics Department University of Science and TechnologyBeijing 100083China College of Materials and Chemistry China Jiliang UniversityHangzhou 310018China College of Science Xi’an Aeronautical UniversityXi’an 710077China

Sodium-ion capacitors have the potential to deliver high energy,power density,and excellent cycling *** this study,ultrathin Co_(3)V_(2)O_(8)nanosheets are successfully synthesized through an one-pot hydrothermal reaction and a subsequent doping reconfiguration-induced vacancy-forming *** oxygen vacancies and high porosity are observed in the Co_(3)V_(2)O_(8)electrode and result in excellent electrochemical performance in 1 M NaOH and Na_(2)SO_(4)*** cathode has a large specific capacity(@NaOH),high-rate capability(@NaOH),wide voltage window(@Na_(2)SO_(4)),and favorable long-cycle ***-situ X-ray diffraction and X-ray photoelectron spectroscopy show that the Co_(3)V_(2)O_(8)electrode displays a battery-like behavior related to OH−ions in the alkaline NaOH *** contrast,in the neutral Na_(2)SO_(4)electrolyte,Co_(3)V_(2)O_(8)mainly shows an intercalation/extraction behavior with Na+*** functional theory calculation suggests that oxygen vacancy leads to a new state located in the bandgap,which greatly improves the electron transfer efficiency and reduces the sodiation energy barrier of Co_(3)V_(2)O_(8)in the neutral Na_(2)SO_(4)***,when paired with a high-voltage activated carbon(AC)anode,full-cell Co_(3)V_(2)O_(8)//Na_(2)SO_(4)//AC delivers high energy/power densities(89.6 Wh·kg^(−1)/330 W·kg^(−1)).

关键词： mesoporous Co_(3)V_(2)O_(8) oxygen vacancy aqueous hybrid capacitors sodium ion storage electrochemical mechanism

Investment risk evaluation of inland floating photovoltaic power plants in China using the HFLTS-TFN method

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Clean Energy 2021年第3期5卷 536-550页

作者： Yanli Xiao xin ju Bo Yu Zheng Wang Chuanbo Xu Economic and Technical Research Institute State Grid Ningxia Electric Power Co.Ltd.YinchuanNingxiaChina School of Economics and Management North China Electric Power UniversityBeijingChina

Inland floating photovoltaic power plants(IFPPPs)are the key to making full use of water advantages to develop solar resources in the *** the investment risk is an important prerequisite for promoting the projects on a large *** paper proposes a model to assess the investment risk of IFPPPs in ***,this paper identifies the investment risk factors and establishes an evaluation indicator system from four ***,the indicator data are collected and described by adopting hesitant fuzzy linguistic term sets and triangular fuzzy numbers to ensure soundness and ***,a weighted method combining the best-worst method and the entropy method are utilized to determine the indicator weights under the consideration of the impact of subjective preferences and objective ***,the results show that the overall risk level of China’s IFPPPs is‘medium low’.Fifth,sensitivity analysis and comparative analysis are implemented to examine the stability of the evaluation ***,this paper also provides some risk-response strategies for the development of China’s IFPPPs from economy,society,technology and environment.

关键词： inland floating photovoltaic power plants risk assessment HFLTS-TFN BWM

Fabrication of high Li:water molar ratio electrolytes for lithium-ion batteries

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Chinese Chemical Letters 2021年第2期32卷 834-837页

作者： Miaofeng Huang Jiajie Yang Siron Zhen Chubin Wan Xiaoping Jiang xin ju University of Science and Technology Beijing Beijing 100083China Qilu University of Technology Shandong Academy of SciencesJi'nan 250014China

Hydrous electrolytes with high electrochemical potentials were obtained by hydrating water molecules into solutes to form high Li:water molar ratio electrolytes(HMRE).Solid polyethylene glycol(PEG) were e mployed to enha nce the molar ratio of Li^(+) to water in the electrolytes while reducing the consumption of *** obtained mole ratio of Li^(+) to wa ter molecules in the hydrous electrolytes was greater than 1:1;however,the mass fraction of Li-salt was reduced to 61%(approximately 5.5 mol/kg,based on water and PEG).Compared with that of water-in-salt electrolytes,the mass fraction of Li-salt could be remarkably reduced by adding solid *** electrochemical stability of the electrolytes improved considerably because of the strong hydration of Li^(+) by the water molecules.A beneficial passivation effect,arising from the decomposition of the electrolyte,at a wide potential window was observed.

关键词： Aqueous electrolyte Wide potential window Aqueous Li-ion battery Solid electrolyte interface Water-in-salt electrolytes

急性中心性浆液性脉络膜视网膜病变患者视网膜和脉络膜微血管结构的改变

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中国医师杂志 2024年第5期26卷 667-672页

作者：丁国龙武炳慧巨欣李婵李英英陆慧琴西安市第一医院西北大学附属第一医院眼科西安710002

目的分析单眼急性中心性浆液性脉络膜视网膜病变(CSC)患者黄斑区视网膜及脉络膜微血管结构的变化,以及视网膜下积液(SRF)体积的影响因素。方法前瞻性选取2023年1月至10月于西安市第一医院眼科检查确诊的37例单眼急性CSC患者纳入本研究,... 详细信息

目的分析单眼急性中心性浆液性脉络膜视网膜病变(CSC)患者黄斑区视网膜及脉络膜微血管结构的变化,以及视网膜下积液(SRF)体积的影响因素。方法前瞻性选取2023年1月至10月于西安市第一医院眼科检查确诊的37例单眼急性CSC患者纳入本研究,患眼为A组,对侧眼为B组。选取同期30例年龄、性别匹配的正常人的右眼为正常眼组(C组)。采用扫频源光学相干断层扫描血管成像(SS-OCTA)对受检眼黄斑区6 mm×6 mm范围进行扫描。应用自带软件分析并记录黄斑区0~1 mm、0~3 mm、0~6 mm的视网膜浅层毛细血管丛(SCP)及深层毛细血管丛(DCP)的血管密度(VD)、灌注面积(PA)、视网膜厚度(RT)、脉络膜厚度(CT)以及脉络膜大中血管层的脉络膜血管容积(CVV)和脉络膜血管指数(CVI),同时记录患眼组SRF体积。对比三组VD、PA、RT、CT、CVV及CVI的变化。采用Spearman秩相关检验分析SRF体积与微血管结构参数的相关性。结果(1)在黄斑区0~6 mm范围内,患眼组与对侧眼组SCP的VD、PA比较差异无统计学意义(均P>0.05);患眼组及对侧眼组SCP的VD、PA均低于正常眼组,差异均有统计学意义(均P0.05);患眼组及对侧眼组脉络膜大中血管CVV、CVI均高于正常眼组,差异均有统计学意义(均P<0.05)。(3)SRF体积与黄斑区0~3 mm范围内DCP的VD呈负相关(P<0.05),与0~6 mm范围内CT呈正相关(P<0.05)。结论急性CSC是一种双眼脉络膜疾病,脉络膜增厚主要为大中血管层的增厚;急性CSC可以引起黄斑区视网膜浅层及深层血流密度的降低;SRF体积与DCP的VD呈负相关,与CT呈正相关。

关键词：中心性浆液性脉络膜视网膜病变视网膜下积液脉络膜血管指数微血管密度

同步放化疗联合早期综合营养治疗在局部晚期鼻咽癌中的应用价值

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中国现代医学杂志 2024年第8期34卷 65-69页

作者：刘新菊刘冬梅邱荣良郑州大学附属肿瘤医院(河南省肿瘤医院) 河南郑州450003

目的探讨同步放化疗联合早期综合营养治疗在局部晚期鼻咽癌中的应用价值。方法回顾性分析2018年1月—2020年12月在河南省肿瘤医院就诊的100例局部晚期鼻咽癌患者,根据不同干预方式分为对照组和观察组,每组50例。对照组同步放化疗和常... 详细信息

目的探讨同步放化疗联合早期综合营养治疗在局部晚期鼻咽癌中的应用价值。方法回顾性分析2018年1月—2020年12月在河南省肿瘤医院就诊的100例局部晚期鼻咽癌患者,根据不同干预方式分为对照组和观察组,每组50例。对照组同步放化疗和常规营养支持,观察组接受同步放化疗联合早期综合营养治疗方案,对比两组患者认知水平、干预前后营养状态、免疫功能和远期疗效。结果观察组营养认知、食欲、功能和饮食配合评分高于对照组(P 0.05)。观察组治疗前后CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)的差值高于对照组(P 0.05)。观察组总生存率、疾病特异性生存率、无局部复发率和无远处转移生存率高于对照组(P <0.05)。结论局部晚期鼻咽癌患者予以同步放化疗联合早期营养治疗方案,可提高认知水平,减少疾病对营养状态和免疫功能的影响,对预后有明显改善作用。

关键词：局部晚期鼻咽癌同步放化疗早期综合营养治疗营养状态免疫功能

Effect of Cu on the boron segregation at grain boundaries and vacancy-type defects in ultra-low carbon micro-alloy steels

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Science China(Technological Sciences) 2014年第6期57卷 1135-1141页

作者： YANG RuiJie WU Ping LI XiangLong ZHANG ShiPing CHEN Sen WANG BaoYi ju xin Department of Physics School of Mathematics and PhysicsUniversity of Science and Technology Beijing Key Laboratory of Nuclear Analysis Techniques

By thermal neutron irradiation particle tracking autoradiography(PTA)technique,the development of boron segregation at grain boundaries in ultra-low carbon micro-alloy steels was investigated during cooling from 1150°C to 850°C,and the effect of Cu on boron segregation at grain boundaries was *** positron annihilation lifetime(PAL)technique,the changes of vacancy-type defects with temperatures and the effect of Cu on vacancy-type defects in the cooling process were *** show that,the concentration of boron at grain boundaries increases rapidly at the beginning of the cooling;after that,it begins to decrease;and then,it increases gradually *** addition of Cu not only increases the concentration of boron at grain boundaries but also speeds up the development process of boron segregation at grain *** the continuous cooling process,the addition of Cu significantly affects the change of vacancy-type defects with temperatures in ultra-low carbon micro-alloy steels.

关键词： particle tracking autoradiography(PTA) technique boron segregation at grain boundaries positron annihilation lifetime(PAL) technique vacancy-type defects ultra-low carbon micro-alloy steels

Simulation of Light Intensification Induced by Defects of Polished Fused Silica

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Chinese Physics Letters 2011年第1期28卷 109-111页

作者： WANG Feng-Rui LIU Hong-Jie HUANG Jin ZHOU xin-Da JIANG Xiao-Dong WU Wei-Dong ZHENG Wan-Guo ju xin Research Center of Laser Fusion China Academy of Engineering Physics Mianyang 621900 Department of Physics University of Science and Technology Beijing Beijing 100083

Light intensity distribution in the vicinity of inclusions and etched cracks in polished fused silica at wavelength scale are simulated by using the finite-difference time-domain algorithm. Light intensity enhancement factor as functions of diameter and refractive index of inclusions are investigated, more than 10 times that of incident beam is obtained in the simulation. We model the etched crack in close proximity to a real structure, which is characterized by AFM. We find that the peak light intensity of the crack is a function of its cross sectional breadth depth ratio, providing good hints for the effective processing of fused silica samples to improve the damage threshold.

关键词： Computational physics Condensed matter: electrical magnetic and optical Condensed matter: structural mechanical & thermal

Preparation of safe water-lipid mixed electrolytes for application in ion capacitor

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Chinese Chemical Letters 2021年第6期32卷 2009-2012页

作者： Miaofeng Huang Aihua Tang Zhenyin Wang Jingkun Shi Xiaoping Jiang Chubin Wan xin ju University of Science and Technology Beijing Beijing 100083China Qilu University of Technology(Shandong Academy of Sciences) Ji'nan 250014China

Aqueous electrolytes are safe,economic,and environmentally ***,they have a narrow potential *** the other hand,organic electrolytes exhibit good thermodynamic stability but are inflammable and moisture *** this study,we prepared water-PEG-lipid ternary electrolytes(TEs).To combine the advantages of water,polyethylene glycol(PEG)and propylene carbonate(PC).The nonflammable mixed electrolytes exhibited a wide potential window of about 2.8 V due to the beneficial effects of PEG and *** these TEs,a lithium manganate-active carbon ion capacitor could be operated at 2.4 V with an energy density of 32 Wh/kg,based on the total active electrode material(current density of 3.3 m A/cm^(2)).This value was significantly higher than that achieved using an aqueous electrolyte,thereby rationalizing the higher energy density.

关键词： Safe electrolytes Wide potential window Ion capacitor Moisture tolerant Ternary electrolyte Water-lipid mixed

Effect of Nb Content on the Hot Deformation Behavior of S460ML Steel

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Acta Metallurgica Sinica(English Letters) 2019年第4期32卷 526-534页

作者： Yu-Cheng Zhang Zhen-Sheng Meng Yang Meng xin-Hua ju Zhong-Hang Jiang Ze-jun Ma Research Institute of Technology of Shougang Group Co.Ltd.

The hot deformation behavior of S460 ML steel with different Nb contents was investigated by single-pass compression experiment on the Gleeble-1500 thermo-machine simulator at deformation temperatures ranging from 900 to 1200 ℃ and strain rates from 0.1 to 5.0 s^(-1). The critical strain of dynamic recrystallization(DRC) under different conditions was determined by using working hardening rate-strain curves. The relationship between critical strain and peak strain of DRC was discussed. By means of regression analysis method, the hot deformation activation energy of steels and the mathematical model for predicting DRC critical strain were calculated and established, respectively. The results showed that DRC occurred during hot deformation. As the deformation temperature increased and strain rate decreased, the critical strain of DRC decreased. The critical strain(εc) showed linear relationship with peak strain(εp). As Nb content increased,the needed deformation temperature for occurring DRC increased, while the needed strain rate for it decreased. The activation energy for hot deformation of S460 ML steel increased with increasing Nb content.

关键词： Dynamic recrystallization Critical strain Nb content Deformation temperature Strain rate Hot deformation

Time-dependent photothermal characterization on damage of fused silica induced by pulsed 355-nm laser with high repetition rate

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Chinese Physics B 2020年第2期29卷 432-437页

作者： Chun-Yan Yan Bao-An Liu Xiang-Cao Li Chang Liu xin ju Department of Physics University of Science and Technology BeijingBeijing 100083China

Time-dependent damage to fused silica induced by high frequency ultraviolet laser is *** spectroscopy(PTS) and optical microscopy(OM) are utilized to characterize the evolution of damage pits with irradiation *** results describe that in the pre-damage stage of fused silica sample irradiated by 355-nm laser,the photothermal spectrum signal undergoes a process from scratch to metamorphism due to the absorption of laser energy by *** the visible damage stage of fused siliea sample,the photothermal spectrum signal decreases gradually from the maximum value because of the aggravation of the damage and the splashing of the *** method can be used to estimate the operation lifetime of optical elements in engineering.

关键词： photothermal spectroscopy fused silica laser-induced damage