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| 1 | The corrosion behavior of Ti-6Al-3Nb-2Zr-1Mo alloy:Effects of HCl concentration and temperature显示文摘Investigation about the corrosion behavior of Ti alloys in different ambient environment is of great significance for their practical application.Herein,we systematically investigate the corrosion behavior of a newfound Ti-6 Al-3 Nb-2 Zr-1 Mo(Ti80)alloy in hydrochloric acid(HCl)ranging from 1.37 to 7 M,and temperature ranging from 25 to 55℃,by means of electrochemical measurements,static immersion tests and surface analysis.Results manifest that increasing either HCl concentration or temperature can accelerate the corrosion of Ti80 alloy via promoting the breakdown of native protective oxide film and then further facilitating the active dissolution of Ti80 matrix.According to potentiodynamic polarization curves,Ti80 alloy displays a spontaneous passive behavior in 1.37 M HCl at 25℃,compared to a typical active-passive behavior under the other conditions.As indicated by cathodic Tafel slope,the rate determining step for cathodic hydrogen evolution reaction is likely the discharge reaction step.The apparent activation energies obtained from corrosion current density and maximum anodic current density for Ti80 alloy in 5 M HCl solution are 62.4 and 55.6 kJ mol-1,respectively,which signifies that the rate determining step in the corrosion process of Ti80 alloy is mainly determined by surface-chemical reaction rather than diffusion.Besides,the electrochemical impedance spectroscopy tests demonstrate that a stable and compact oxide film exists in 1.37 M HCl at 25℃,whereas a porous corrosion product film forms under the other conditions.Overall,the critical HCl concentration at which Ti80 alloy can maintain passivation at 25℃can be determined as a value between 1.37 and 3 M.Furthermore,the corroded surface morphology characterization reveals that equiaxedαphase is more susceptible to corrosion compared to intergranularβphase due to a lower content of Nb,Mo,and Zr in the former. | Baoxian Su Binbin Wang Liangshun Luo Liang Wang Yanqing Su Fuxin Wang Yanjin Xu Baoshuai Han Haiguang Huang Jingjie Guo Hengzhi Fu | 2021 | Journal of Materials Science & Technology2021，，15： | 5 |
| 2 | An efficient method for vibration and stability analysis of rectangular plates axially moving in fluid显示文摘An efficient method is developed to investigate the vibration and stability of moving plates immersed in fluid by applying the Kirchhoff plate theory and finite element method.The fluid is considered as an ideal fluid and is described with Bernoulli’s equation and the linear potential flow theory.Hamilton’s principle is used to acquire the dynamic equations of the immersed moving plate.The mass matrix,stiffness matrix,and gyroscopic inertia matrix are determined by the exact analytical integration.The numerical results show that the fundamental natural frequency of the submersed moving plates gradually decreases to zero with an increase in the axial speed,and consequently,the coupling phenomenon occurs between the first-and second-order modes.It is also found that the natural frequency of the submersed moving plates reduces with an increase in the fluid density or the immersion level.Moreover,the natural frequency will drop obviously if the plate is located near the rigid wall.In addition,the developed method has been verified in comparison with available results for special cases. | Yanqing WANG Han WU Fengliu YANG Quan WANG | 2021 | Applied Mathematics and Mechanics(English Edition)2021，42，2： | 3 |
| 3 | The mechanosensitive lncRNA Neat1 promotes osteoblast function through paraspeckle-dependent Smurf1 mRNA retention显示文摘Mechanical stimulation plays an important role in bone remodeling. Exercise-induced mechanical loading enhances bone strength,whereas mechanical unloading leads to bone loss. Increasing evidence has demonstrated that long noncoding RNAs(lnc RNAs) play key roles in diverse biological, physiological and pathological contexts. However, the roles of lnc RNAs in mechanotransduction and their relationships with bone formation remain unknown. In this study, we screened mechanosensing lnc RNAs in osteoblasts and identified Neat1, the most clearly decreased lnc RNA under simulated microgravity. Of note, not only Neat1 expression but also the specific paraspeckle structure formed by Neat1 was sensitive to different mechanical stimulations, which were closely associated with osteoblast function. Paraspeckles exhibited small punctate aggregates under simulated microgravity and elongated prolate or larger irregular structures under mechanical loading. Neat1 knockout mice displayed disrupted bone formation, impaired bone structure and strength, and reduced bone mass. Neat1 deficiency in osteoblasts reduced the response of osteoblasts to mechanical stimulation. In vivo, Neat1 knockout in mice weakened the bone phenotypes in response to mechanical loading and hindlimb unloading stimulation. Mechanistically, paraspeckles promoted nuclear retention of E3 ubiquitin ligase Smurf1 m RNA and downregulation of their translation, thus inhibiting ubiquitination-mediated degradation of the osteoblast master transcription factor Runx2, a Smurf1 target. Our study revealed that Neat1 plays an essential role in osteoblast function under mechanical stimulation, which provides a paradigm for the function of the lnc RNA-assembled structure in response to mechanical stimulation and offers a therapeutic strategy for long-term spaceflight-or bedrest-induced bone loss and age-related osteoporosis. | Caizhi Liu Xingcheng Gao Yuheng Li Weijia Sun Youjia Xu Yingjun Tan Ruikai Du Guohui Zhong Dingsheng Zhao Zizhong Liu Xiaoyan Jin Yinlong Zhao Yinbo Wang Xinxin Yuan Junjie Pan Guodong Yuan Youyou Li Wenjuan Xing Guanghan Kan Yanqing Wang Qi Li Xuan Han Jianwei Li Shukuan Ling Yingxian Li | 2022 | Bone Research2022，10，2： | 3 |
| 4 | Synthesis, Antitumor Activity and Preliminary Structure-activity Relationship of 2-Aminothiazole Derivatives显示文摘In this paper, we described the synthesis of 2-aminoflfiazole sublibrary containing methyl, bromo, phenylor butylidene at 4- or/and 5-position of its core. All target compounds were evaluated tbr their antitumor activitiesagainst human lung cancer cell line H1299 and human glioma cell line SHG-44. Among the compotmds screened,4,5,6,7-tetrahydrobenzo[d]thiazole(26b) exhibited the most potent antittunor activities with IC50 values of 4.89 and4.03 μmol/L against the two tested cell lines, respectively. Preliminary structure-activity relationship(SAR) studies ofthese compound were subsequently investigated. | LI Hongshuang WANG Xinran DUAN Guiyun XIA Chengcai XIAO Yuliang LI Furong GE Yanqing YOU Guirong HAN Junfen FU Xiaopan | 2016 | Chemical Research in Chinese Universities2016，32，6： | 3 |
| 5 | Phase structure and hydrogen storage properties of REMg8.35Ni2.18Al0.21 (RE=La, Ce, Pr, and Nd) hydrogen storage alloys显示文摘REMg8.35Ni2.18Al0.21 (RE=La, Ce, Pr,和 Nd ) 合金被感应的融化并且列在后面退火准备。X 光检查衍射(XRD ) 和扫描电子显微镜学(SEM ) 结果证明合金由 Mg2Ni 组成,(La, Pr, Nd ) Mg2Ni,(La, Ce ) 2Mg17,(Ce, Pr, Nd ) Mg12 和 Ce2Ni7 阶段。上述阶段是进 Mg2NiH4, MgH2 和 REHx 的 disproportioned (x=2.51 或 3 ) 在 hydriding 的阶段。而 LaH3, PrH3 和 NdH3 阶段仍然保持未改变, CeH2.51 阶段在 dehydriding 转变了成 CeH2.29 阶段。当 CeMg8.35Ni2.18Al0.21 合金介绍了最好的 hydriding/dehydriding 可逆性时, PrMg8.41Ni2.14Al0.20 合金有最快的 hydriding 动力学和最高的 dehydriding 高原压力。CeMg8.35Ni2.18Al0.21 氢化物的发作氢解吸附作用温度由于在 CeH2.51 和 CeH2.29 之间的阶段转变显著地减少了。 | LIU Yanqing HAN Shumin HU Lin LIU Baozhong ZHAO Xin JIA Yanhong | 2013 | Journal of Rare Earths2013，31，8： | 3 |
| 6 | Inactivation of food spoilage bacteria by high pressure processing: Evaluation with conventional media and PCR–DGGE analysis显示文摘 | Yanqing Han Xinglian Xu Yun Jiang Guanghong Zhou Xinsheng Sun Baocai Xu | 2010 | Food Research International2010，，6： | 2 |
| 7 | Biocompatible chitosan/polyethylene glycol/multi-walled carbon nanotube composite scaffolds for neural tissue engineering显示文摘Carbon nanotube(CNT)composite materials are very attractive for use in neural tissue engineering and biosensor coatings.CNT scaffolds are excellent mimics of extracellular matrix due to their hydrophilicity,viscosity,and biocompatibility.CNTs can also impart conductivity to other insulating materials improve mechanical stability guide neuronal cell behavior and trigger axon regeneration.The performance of chitosan(CS)/polyethylene glycol(PEG)composite scaffolds could be optimized by introducing multi-walled CNTs(MWCNTs).CS/PEG/CNT composite scaffolds with CNT content of 1%,3%,and 5%(1%=0.01 g/mL)were prepared by freeze-drying.Their physical and chemical properties and biocompatibility were evaluated.Scanning electron microscopy(SEM)showed that the composite scaffolds had a highly connected porous structure.Transmission electron microscope(TEM)and Raman spectroscopy proved that the CNTs were well dispersed in the CS/PEG matrix and combined with the CS/PEG nanofiber bundles.MWCNTs enhanced the elastic modulus of the scaffold.The porosity of the scaffolds ranged from 83%to 96%.They reached a stable water swelling state within 24 h,and swelling decreased with increasing MWCNT concentration.The electrical conductivity and cell adhesion rate of the scaffolds increased with increasing MWCNT content.Immunofluorescence showed that rat pheochromocytoma(PC12)cells grown in the scaffolds had characteristics similar to nerve cells.We measured changes in the expression of nerve cell markers by quantitative real-time polymerase chain reaction(qRT-PCR),and found that PC12 cells cultured in the scaffolds expressed growth-associated protein 43(GAP43),nerve growth factor receptor(NGFR),and class IIIβ-tubulin(TUBB3)proteins.Preliminary research showed that the prepared CS/PEG/CNT scaffold has good biocompatibility and can be further applied to neural tissue engineering research. | Shengbo SANG Rong CHENG Yanyan CAO Yayun YAN Zhizhong SHEN Yajing ZHAO Yanqing HAN | 2022 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2022，23，1： | 2 |
| 8 | Detection of Hydrazine at MXene/ZIF-8 Nanocomposite Modified Electrode显示文摘ZIF-8 with excellent chemical and physical properties is a promising material for the field of electrochemical sensing.However,the poor electrical conductivity of ZIF-8 severely limits its electrochemical performance.Here,we report a method that can significantly improve the conductivity of ZIF-8 by intercalating Ti_(3)C_(2)T_(x) MXene as a conductive platform.Benefiting from higher conductivity and unique electrocatalytic activity,the obtained MXene/ZIF-8 nanocomposite presented the worthy analytical performance for hydrazine sensing.The successful fabrication of MXene/ZIF-8 holds great promise for the design of electrochemical sensors,and it is a promising material to promote the development of new electrode materials. | Yanqing Yao Xuhui Han Xuanhe Yang Jia Zhao Chunpeng Chai | 2021 | Chinese Journal of Chemistry2021，39，2： | 1 |
| 9 | Inactivation of food spoilage bacteria by high pressure processing: evaluation with conventional media and PCR-DGGE analysis显示文摘 | HAN Yanqing XU Xinglian JIANG Yun | 2010 | Food Research International2010，43，： | 1 |
| 10 | Effect of high pressure treatment on microbial populations of sliced vacuum-packed cooked ham显示文摘 | Yanqing Han Yun Jiang Xinglian Xu Xinsheng Sun Baocai Xu Guanghong Zhou | 2011 | Meat Science2011，，4： | 1 |
| 11 | Constitutive Modeling and Dynamic Recrystallization Mechanisms of an Ultralow-carbon Microalloyed Steel During Hot Compression Tests显示文摘The hot deformation behavior of an ultralow-carbon microalloyed steel was investigated using an MMS-200 thermal simulation test machine in a temperature range of 1073-1373 K and strain rate range of 0.01-10 s-1.The results show that the flow stress decreases with increasing deformation temperature or decreasing strain rate.The strain-compensated constitutive model based on the Arrhenius equation for this steel was established using the true stress-strain data obtained from a hot compression test.Furthermore,a new constitutive model based on the Z-parameter was proposed for this steel.The predictive ability of two constitutive models was compared with statistical measures.The results indicate the new constitutive model based on the Z-parameter can more accurately predict the flow stress of an ultralow-carbon microalloyed steel during hot deformation.The dynamic recrystallization(DRX)nucleation mechanism at different deformation temperatures was observed and analyzed by transmission electron microscopy(TEM),and strain-induced grain boundary migration was observed at 1373 K/0.01 s^-1. | 李宁 HUANG Yao HAN Renheng BAO Ziming ZHU Yanqing ZHANG Hexin 赵成志 | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，5： | 1 |
| 12 | Inactivation of foodspoilage bacteria by high pressure processing:evaluation with conven-tional media and PCR-DGGE analysis显示文摘 | HAN Yanqing XU Xinglian JIANG Yun | 2010 | Food Research International2010，43，6： | 1 |
| 13 | Preparation of Cu 2 ZnSnS 4 thin films by sulfurizing stacked precursor thin films via successive ionic layer adsorption and reaction method显示文摘 | Zhenghua Su Chang Yan Kaiwen Sun Zili Han Fangyang Liu Jin Liu Yanqing Lai Jie Li Yexiang Liu | 2012 | Applied Surface Science2012，，19： | 1 |
| 14 | Molecular characterization of a ryanodine receptor gene in the rice leaffolder, Cnaphalocrocis medinalis ( Guen6e ) 显示文摘 | Wang Jianjun Li Yanqing Han Zhaojun | 2012 | PLoS One2012，7，36： | 1 |
| 15 | A novel three state RF MEMS switch for ultrabroadband(DC-40 GHz) applica- tions显示文摘 | Zhu Yanqing Han Lei Wang Lifeng | 2013 | Electron Device Letters2013，34，8： | 1 |
| 16 | Twinning Behaviour in the Intermetallic Compound Al_(18)Cr_2Mg_3显示文摘The twinning in the intermetallic compound Al18Cr2Mg3 was observed and identified by transmission electron microscopy.The geometric description of the twinning in Al18Cr2Mg3 with 184 atoms per unit cell was investigated at atomic level.The classical theory of deformation twinning states that the net atomic displacements are divided into shear and shuffles during twinning.Based on the theory and the hypothesis of full mirror reflection symmetry,the displacement and angle of shuffle were calculated for each atom.The geometric calculation results show that all of the atoms in single crystal Al18Cr2Mg3 have to shuffle.Moreover,the calculation results can be divided into 22 groups,which do not show obvious regularity. | Maohua Li Yanqing Yang Ming Han Wei Zhang Bin Huang Xian Luo Jigang Ru | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，4： | 1 |
| 17 | The enhanced conductivity and stability of AZO thin films with a TiO 2 buffer layer显示文摘 | Tianlin Yang Shumei Song Yanhui Li Yanqing Xin Guiqiang Du Maoshui Lv Shenghao Han | 2012 | Physica B: Physics of Condensed Matter2012，，23： | 1 |
| 18 | Effect of high pressure treatment on microbial populations of sliced vacuum-packed cooked ham显示文摘 | HAN Yanqing JIANG Yun XU Xinglian | 2011 | Meat Science2011，88，4： | 1 |
| 19 | Inactivation of food spoilage bacteria by high pressure processing: evaluation with conventional media and PCR-DGGE analysis显示文摘 | HAN Yanqing XU Xinglian JIANG Yun | 2010 | Food Research International2010，43，6： | 1 |
| 20 | Comparisons of Wave Force Model Effects on the Structural Responses and Fatigue Loads of a Semi-Submersible Floating Wind Turbine显示文摘The selection of wave force models will significantly impact the structural responses of floating wind turbines.In this study,comparisons of wave force model effects on the structural responses and fatigue loads of a semi-submersible floating wind turbine(SFWT)were conducted.Simulations were performed by employing the Morison equation(ME)with linear or second-order wave kinematics and potential flow theory(PFT)with first-or second-order wave forces.A comparison of regular waves,irregular waves,and coupled wind/waves analyses with the experimental data showed that many of the simulation results and experimental data are relatively consistent.However,notable discrepancies are found in the response amplitude operators for platform heave,tower base bending moment,and tension in mooring lines.PFT models give more satisfactory results of heave but more significant discrepan-cies in tower base bending moment than the ME models.In irregular wave analyses,low-frequency resonances were captured by PFT models with second-order difference-frequency terms,and high-frequency resonances were captured by the ME models or PFT models with second-order sum-frequency terms.These force models capture the response frequencies but do not reasonably predict the response amplitudes.The coupled wind/waves analyses showed more satisfactory results than the wave-only analyses.However,an important detail to note is that this satisfactory result is based on the overprediction of wind-induced responses. | HAN Yanqing LE Conghuan ZHANG Puyang XU Shengnan | 2024 | Journal of Ocean University of China2024，23，1： | 0 |
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