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Chemical Research in Chinese Universities 2001年第4期17卷 362-367页

作者： hu Jing-bo LI Qi-long Department of Chemistry Beijing Normal UniversityBeijing 100875P.R.China

In a 0. 10 mol/L HAc-NaAc buffer solution (pH = 4. 59), a sensitive reduction peak of bleomycin was observed by linear sweep voltammetry at a Co/GC ion implantation modified electrode. The peak potential was-0. 73 V(iw. SCE). The peak current was proportional to the concentration of bleomycin over the range of 5.0 × 10-8-1.0× 10-6 and 1.0× 10-6-1. 0 × 10-5 mol/L with a detection limit of 2.0 × 10-8 mol/L. The electrochemical behavior of the reduction peak of bleomycin at the Co/GC modified electrode was studied by linear sweep and cyclic voltammetry and applied to the determination of bleomycin in urine. This method is simple, rapid and reliable. The reduction process is quasi-reversible. The experiments of AES and XPS showed that Co was surely implanted into the surface of GCE and the depth distribution of Co was in good agreement with Gooses normal distribution; the implanted Co at GCE improved the electrocatalytic activity.

关键词： Co/GC ion implantation modified electrode Electrochemical behavior Linear sweep voltammetry Bleomycin

Effects of relative humidity on the characterization of a photochemical smog chamber

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Journal of Environmental Sciences 2011年第12期23卷 2013-2018页

作者： Gaoshuo hu Yongfu Xu long Jia State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

Water vapor plays an important role in many atmospheric chemical reactions. A self-made indoor environmental smog chamber was used to investigate the effects of relative humidity （RH） on its characterization, which included the wall effects of reactive species such as O3 and NOx, and the determination of chamber-dependent OH radicals in terms of CO-NOx irradiation experiments. Results showed that the rate constant of O3 wall losses increased with increasing RH, and that their relationship was linearly significant. Although RH aflected the rate constant of NOx wall losses, their relationship was not statistically significant. Background air generated a small amount of ozone at both high and low RH. When RH varied from 5% to 79%, the apparent rate constant kNO2→HONO for the conversion of NO2 into gas phase HONO was estimated in the range of 0.70×10-3–2.5×10-3 min-1. A linear relationship between kNO2→HONO and RH was obtained as kNO2→HONO （10-3 min-1） = –0.0255RH ＋ 2.64, with R2 and P value being 0.978 and 0.01. To our knowledge, this is the first report on their relationship. The generation mechanism for HONO and OH was also discussed in this work.

关键词： chamber characterization relative humidity wall effects OH radicals

Microstructure evolution of semi-solid Mg2Si/A356 composites during remelting process

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China Foundry 2020年第5期17卷 384-388页

作者： Yong hu sheng-qi Fu long-zhi Zhao Da-hao Wang Fei Liu School of Materials Science and Engineering East China Jiaotong UinversityNanchang 330013China Key Laboratory of Advanced Materials for Vehicles&Laser Additive Manufacturing of Nanchang City East China Jiaotong UniversityNanchang 330013China

The semi-solid processed Mg2Si/A356 composites were fabricated using a sloping plate,and the phase and morphology evolution of the semi-solid Mg2Si/A356 slurry during the remelting process was *** indicate that compared to as-cast microstructure,the size of primaryα-Al phase and Mg2Si phase of semi-solid microstructure fabricated by using a sloping plate decreases and the morphology ofα-Al phase becomes fine and *** increasing the reheating temperature and prolonging the holding time,the primaryα-Al phase spheroidizes,the liquid fraction in semi-solid microstructure increases,and the Chinese script Mg2Si phase embedded in the primaryα-Al phase cannot be *** Chinese script Mg2Si phase is distributed in the secondaryα-Al phase and becomes *** net-shaped eutectic phase also becomes finer after *** optimum remelting parameters suitable for thixoforming in this study are remelting at 580℃for 30 min.

关键词： semi-solid Mg2Si aluminum matrix composites remelting microstructure

Multidrug dissolvable microneedle patch for the treatment of recurrent oral ulcer

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Bio-Design and Manufacturing 2023年第3期6卷 255-267页

作者： Yuqiong Wang An’an sheng Xinran Jiang Shanshan Yang long Lin Mingzhu Yang Fengshuo Zhu Yongyan hu Jian Li Lingqian Chang Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijing 100191China Department of Stomatology Xiang’an Hospital of Xiamen UniversityXiamen 361000China Institute of Plastic Machinery and Plastic Engineering School of Mechanical and Electrical EngineeringBeijing University of Chemical TechnologyBeijing 100029China Department of Biochemistry Institute of Basic Medical SciencesChinese Academy of Medical Sciences(CAMS)and Peking Union Medical CollegeBeijing 100005China Department of Oral Maxillofacial-Head and Neck Oncology Shanghai Ninth People’s HospitalShanghai 200011China Laboratory Animal Facility Peking University First HospitalBeijing 100034China

Recurrent oral ulcer is a painful oral mucosal disorder that affects 20%of the world’s *** lack of a radical cure due to its unknown underlying cause calls for innovative symptomatic *** work reports a hyaluronic acid-based dissolvablemicroneedle patch(ROUMNpatch,short for recurrent oral ulcer microneedle)loaded with dexamethasone acetate,vitamin C and tetracaine hydrochloride for the treatment of recurrent oral *** ROUMN patch shows enhancement in both the anti-inflammatory effect elicited by dexamethasone and the pro-proliferation effect of vitamin *** vitro experiments show that ROUMN has a higher efficiency in suppressing lipopolysaccharide(LPS)-induced interleukin-6(IL-6)expression than dexamethasone *** proliferation and migrationwere also significantly promoted byROUMNcompared to vitamin C *** healing-promoting effect of ROUMN was also verified in vivo using an acetic acid-cauterized oral ulcer model in *** as a treatment accelerated the healing process of oral ulcers,shortening the total healing time to 5 days compared with the 7 days required by treatment using watermelon frost,a commonly used over-the-counter(OTC)drug for oral *** rapid dissolution of the hyaluronic acid-based microneedles and the superior healing-promoting effect of the drug combination could lead to a broad application prospect of the ROUMN patch in the treatment of recurrent oral ulcers.

关键词： Recurrent oral ulcer Dissolvable microneedle Hyaluronic acid microneedle Multidrug Anti-inflammation Healing promoting effect

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新型二维声子晶体带隙特性及调控方法研究

大连理工大学学报 2025年第1期65卷 48-55页

作者：胡启国胡皓魏晨胡豁然重庆交通大学机电与车辆工程学院重庆400074 国网重庆市电力公司信息通信分公司重庆401120

为拓宽声子晶体弹性波带隙,提出一种关于基体双侧对称的声子晶体结构模型.采用有限元法计算了该声子晶体的能带结构和本征模态,基于局域共振机理深入分析了其带隙的形成机理,通过改变几何参数及施加等轴预拉伸应变的方法对该声子晶体的... 详细信息

为拓宽声子晶体弹性波带隙,提出一种关于基体双侧对称的声子晶体结构模型.采用有限元法计算了该声子晶体的能带结构和本征模态,基于局域共振机理深入分析了其带隙的形成机理,通过改变几何参数及施加等轴预拉伸应变的方法对该声子晶体的带隙进行被动调控与主动调控.仿真结果表明:所提声子晶体结构基体中的长波行波与振子的谐振相互耦合作用产生一条局域共振带隙,通过优化几何参数可以获得起始频率更低的宽频带隙,对结构施加等轴预拉伸应变可以有效拓宽带隙且带隙宽度随着预拉伸应变的增大而变宽.研究结果为声子晶体的带隙主动调控提供了方案,为结构减振降噪提供了新思路.

关键词：声子晶体带隙特性带隙调控预拉伸应变

A reconstructed edge-based smoothed DSG element based on global coordinates for analysis of Reissner–Mindlin plates

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Acta Mechanica Sinica 2017年第1期33卷 83-105页

作者： Gang Yang De’an hu Shuyao long State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle Engineering Hunan University Changsha 410082China

A reconstructed edge-based smoothed triangular element, which is incorporated with the discrete shear gap (DSG) method, is formulated based on the global coordinate for analysis of Reissner-Mindlin plates. A symbolic integration combined with the smoothing technique is implemented to calculate the smoothed finite element matrices, which is integrated along the boundaries of each smoothing cell. Numerical results show that the proposed element is free from shear locking, and its results are in good agreement with the exact solutions, even for very thin plates with extremely distorted elements. The proposed element gives more accurate results than the original DSG element without smoothing, and it can be taken as an alternative element for analysis of Reissner-Mindlin plates. The prominent feature of the present element is that the integration scheme is unified in the smoothed form for all of the finite element matrices.

关键词： Reissner-Mindlin plate DSG method Symbolic integration Smoothing technique Global coordinate Distorted element

Synthesis and Characterization of Zirconia Nanocrystallites by Cationic Surfactant and Anionic Surfactant

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Chinese Journal of Structural Chemistry 2005年第10期24卷 1133-1139页

作者： YU Jian-Chang hu sheng-Wei College of Material Science and Engineering Fuzhou University Fuzhou 350002 China

Study on nanomaterials has attracted great interests in recent years. In this article, zirconia nanocrystallites of different structures have been successfully synthesized via hydrothermal methods with cationic surfactant （CTAB） and anionic surfactant （SDS）, respectively. Differential Scanning Calorimeter （DSC-TG）, X-ray Diffractometer （XRD）, Transmission Electron Microscope （TEM）, Ultraviolet-Visible （UV-vis） and N2 adsorption-desorption analyses are used for their structure characteristics. The results show that the cationic surfactant has a distinctive direction effect on the formation of zirconia nanocrystallites, while the anionic surfactant has a self-assembly synergistic effect on them. The sample synthesized with the cationic surfactant presents good dispersion with the main phase of tetragonal zirconia, and the average nanocrystal size is around 15 nm after calcination at 500 ℃. While the sample synthesized with the anionic surfactant exhibits a worm-like mesoporous structure with pure tetragonal phase after calcination at 500 ℃ and with good thermal stability.

关键词： cationic surfactant anionic surfactant zirconia nanocrystallites,mesoporous zirconia

Deep eutectic solvents for separation and purification applications in critical metal metallurgy:Recent advances and perspectives

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 1-19页

作者： Shuo Chen shengpeng Su Yanfang huang Bingbing Liu hu Sun Shuzhen Yang Guihong Han School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Zhongyuan Critical Metals Laboratory Henan ProvinceZhengzhou 450001China

Solvent extraction,a separation and purification technology,is crucial in critical metal *** solvents commonly used in solvent extraction exhibit disadvantages,such as high volatility,high toxicity,and flammability,causing a spectrum of hazards to human health and environmental *** solvents have been recognized as potential alternatives to these harmful organic *** the past two decades,several neoteric solvents have been proposed,including ionic liquids(ILs)and deep eutectic solvents(DESs).DESs have gradually become the focus of green solvents owing to several advantages,namely,low toxicity,degradability,and low *** this critical review,their classification,formation mechanisms,preparation methods,characterization technologies,and special physicochemical properties based on the most recent advancements in research have been systematically ***,the major separation and purification applications of DESs in critical metal metallurgy were comprehensively ***,future opportunities and challenges of DESs were explored in the current research *** conclusion,this review provides valuable insights for improving our overall understanding of DESs,and it holds important potential for expanding separation and purification applications in critical metal metallurgy.

关键词： deep eutectic solvents preparations properties separation and purification critical metal metallurgy

Optimization Strategies of Na_(3)V_(2)(PO_(4))_(3) Cathode Materials for Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 204-251页

作者： Jiawen hu Xinwei Li Qianqian Liang Li Xu Changsheng Ding Yu Liu Yanfeng Gao School of Materials Science and Engineering Shanghai UniversityShanghai 200444People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China

Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural ***,the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density,which strictly confine its further application in ***,it is of significance to boost the sodium storage performance of NVP cathode *** to now,many methods have been developed to optimize the electrochemical performance of NVP cathode *** this review,the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed,including carbon coating or modification,foreign-ion doping or substitution and nanostructure and morphology *** foreign-ion doping or substitution is highlighted,involving Na,V,and PO_(4)^(3−)sites,which include single-site doping,multiple-site doping,single-ion doping,multiple-ion doping and so ***,the challenges and prospects of high-performance NVP cathode material are also put *** is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.

关键词： Sodium-ion batteries Na_(3)V_(2)(PO_(4))_(3) Cathode materials Electrochemical performance Optimization strategies

Investigation on Surface Plasmon Polaritons and Localized Surface Plasmon Production Mechanism in Micro-Nano Structures

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Journal of Electronic Science and Technology 2022年第1期20卷 20-29页

作者： Ling-Xi hu Min hu sheng-Gang Liu Terahertz Research Center School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054 Key Laboratory of Terahertz Technology(Ministry of Education) University of Electronic Science and Technology of ChinaChengdu 610054

The simulation mechanism of surface plasmon polaritons(SPPs)and localized surface plasmon(LSP)in different structures was studied,including the Au reflection grating(Au grating),Au substrate with dielectric ribbons grating(Au substrate grating),and pure electric conductor(PEC)substrate with Au ribbons grating(Au ribbons grating).And the characteristics of the Smith-Purcell radiation in these structures were *** results show that SPPs are excited on the bottom surface of Au substrate grating grooves and LSP is stimulated on the upper surface both of Au ribbons grating grooves and Au grating *** to the irreconcilable contradiction between optimizing the grating diffraction radiation efficiency and optimizing the SPPs excitation efficiency in the Au substrate grating,only 40-times enhancement of the radiation intensity was obtained by excited ***,the LSP enhanced structure overcomes the above problem and gains much better radiation enhancement ability,with about 200-times enhancement obtained in the Au ribbons grating and more than 500-times enhancement obtained in the Au *** results presented here provide a way of developing miniature,integratable,tunable,high-power-density radiation sources from visible light to ultraviolet rays at room temperature.

关键词： Coherent radiation high-power radiation localized surface plasmon(LSP) micro-nano structure Smith-Purcell radiation surface plasmon polaritons(SPPs)