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Insight into microstructure evolution on anti-corrosion property of Al_(x)CoCrFeNiC_(0.01) high-entropy alloys using scanning vibration electrode technique

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Rare Metals 2023年第10期42卷 3455-3467页

作者： bo-Kai Liao Zhan-Xiang Liang Zhi-Gang Luo Yue Liu Hao-Wei Deng Tao Zhang Xing-Peng Guo Qi-Sen ren hong-En Ge School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou510006China School of Physics and Materials Science Center of Advanced Functional MaterialsGuangzhou UniversityGuangzhou510006China Joint Institute of Guangzhou University and Institute of Corrosion Science and Technology Guangzhou UniversityGuangzhou510006China Science and Technology Digitization Department China General Nuclear Power CorporationShenzhen518038China Institute of Nuclear Fuel and Materials China Nuclear Power Technology Research InstituteShenzhen518031China Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074China

The effect of micro structure on the corrosion resistance of Al_(x)CoCrFeNiC_(0.01)(x=0.2,0.7,and 1.2)high-entropy alloys(HEAs) was systematically studied in this *** microstructure evolution by regulating the Al content was analyzed in *** behavior was in situ monitored using the scanning vibration electrode technique,as well as some traditional electrochemical *** is interesting to find that the compositions of body-centered cubic(bcc) and face-centered cubic(fcc)phases changed with the rising Al content,while the corresponding electrochemical responses for both phases were discriminated using the scanning Kelvin probe force microscopy *** element was mainly distributed in the bcc phase for Al0.2(x=0.2) alloy,while its distribution changed to the fcc phase for the A10.7 and *** micro-galvanic corrosion cells formed between Cr-depleted and Cr-rich phases,resulting in the localized corrosion behaviors for the Al_(x)CoCrFeNiC_(0.01) HEAs,and the order for anti-corrosion property was Al0.2>Al1.2> Al0.7 HEAs.

关键词： High-entropy alloy Corrosion Mechanical property Scanning vibration electrode technique

Combination of hydrophobically modified γ-poly(glutamic acid)and trehalose achieving high cryosurvival of RBCs

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Science China(Technological Sciences) 2021年第4期64卷 806-816页

作者： ZHANG QiFa LIU bo Chong JingHui ren LiXia ZHAO YunHui YUAN XiaoYan School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300350China Tianjin Blood Center Tianjin 300110China

Trehalose is expected to be an alternative for toxic glycerol as a biocompatible cryoprotectant of red blood cells(RBCs).In this work,γ-poly(glutamic acid)(PGA)is modified by grafting hydrophobic phenethylamine,3,4-dimethoxyphenylethylamine and dodecylamine,*** graft-modified PGA can significantly enhance cryosurvival of RBCs in combination with *** of dynamic light scattering,hemolysis assay,atomic force microscope and confocal laser scanning microscope suggest that the modified PGA polymers can self-assemble into nanoparticles in phosphate buffer saline solutions at the pH range of 6.0–7.4,and exhibit membrane-disruptive activity due to hydrogen bond,conjugation and hydrophobic interactions with cell *** is assumed that the modified PGA polymers can improve the cryosurvival of RBCs by promoting membrane permeability of *** the three graft-modified polymers,phenethylamine-grafted PGA(PGA-g-PEA)can significantly increase the intracellular trehalose-loading content to 11.3±2.4 m M at pH 7.4,much higher than the value0.17±0.66 m M when trehalose is used without any *** view of the aforementioned merit,the cryosurvival rate of sheep RBCs is increased to about 90%by incubation with 1.0 mg mL-1 PGA-g-PEA and 0.36 M *** vitro cell culture of L929 fibroblasts demonstrates low cytotoxicity of ***,hydrophobic PEA-modified PGA with enhanced intracellular trehalose-loading ability can be potentially applied in glycerol-free RBC cryopreservation or other related biomacromolecule delivery systems.

关键词： γ-poly(glutamic acid) membrane-disruptive activity trehalose cryosurvival red blood cells

A passive source ranging method based on the frequency warping transform of the vertical intensity flux in shallow water

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Chinese Physics B 2019年第5期28卷 145-149页

作者： Yu-bo Qi Shi-hong Zhou Meng-Xiao Yu Shu-Yuan Du Mei Sun ren-He Zhang State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences School of Physics and Electronic Engineering Taishan University

The phase of cross-correlation function of two different normal modes contains source range information, which can be extracted by warping transform due to the dispersive characteristics of the shallow water waveguide. The autocorrelation function of the received pressure or particle velocity contains both modal autocorrelation component(MAC) and modal cross-correlation component(MCC), with the former part usually treated as interference for source ranging. Because the real part of the vertical intensity flux(RPVIF) only contains MCC, a passive impulsive source ranging method based on the frequency warping transform of RPVIF with a single vector receiver in shallow water is presented. Using a waveguide-invariant-based frequency warping operator, the cross-correlation components of two different modes in the vertical intensity flux are warped into separable impulsive sequences, the time delays of which are subsequently used for source ranging. The advantages of source ranging based on warping the vertical intensity flux compared with warping the pressure autocorrelation function are pointed out, and the experiment results are also presented.

关键词： passive source ranging vertical intensity flux frequency warping transform normal mode

Analytical Solutions to the Time-Independent Gross-Pitaevskii Equation with a Harmonic Trap

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Chinese Physics Letters 2012年第11期29卷 8-12页

作者： SHI Yu-ren WANG Guang-Hui LIU Cong-bo ZHOU Zhi-Gang YANG hong-Juan College of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070

We try to find the analytical solutions to the time-independent Gross-Pitaevskii equation,a nonlinear Schrodinger equation used in the simulation of bose–Einstein condensates trapped in a harmonic *** the homotopy analysis method and the Galerkin spectral method are *** investigate the one-dimensional case and obtain the approximate analytical solutions *** between the analytical solutions and the numerical solutions has been *** results indicate that they agree very well with each other when the atomic interaction is not too strong.

关键词： potential equation analytical

Construction of superhydrophobic directly Z-scheme bismuth oxybromide/silver phosphate fabric surface with UV shielding and enhanced visible light absorption activity

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Science China(Technological Sciences) 2021年第4期64卷 785-792页

作者： GE bo ZHANG YuLing ZHANG TingXiao ren GuiNa LI WenZhi ZHAO Hui School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252000China School of Environmental and Material Engineering Yantai UniversityYantai 264405China

Various forms of pollutants discharged from industrial and life;how to treat the opposite water-soluble pollutants at the same time is a ***,a superhydrophobic BiOBr/Ag3PO4 fabric(SH fabric)bulk material was prepared aiming at the diversity of ***(WCA=160°)and oil contaminants(spread)have different wetting behavior on fabric *** high recovery efficiency for oil pollutants was achieved by using the selective oil removal property of the SH ***,the pollutants in the aqueous phase were removed by photocatalyst after oil/water *** analysis demonstrated that the direct Z-type heterojunction formed between BiOBr(EVB=1.66 eV;ECB=-1.08 eV)and Ag3PO4(EVB=3.03 eV;ECB=0.6 eV).It is worth noting that the SH fabric exhibited good mechanical stability and UV shielding performance,which have potential application in environmental control.

关键词： superhydrophobic UV shielding oil-water separation pollutant removal

Numerical simulation of EMS position on flow, solidification and inclusion capture in slab continuous casting

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Journal of Iron and Steel Research International 2022年第11期29卷 1807-1822页

作者： Hai-biao Lu Yun-bo Zhong Zhong-ming ren Wei-li ren Chang-gui Cheng Zuo-sheng Lei State Key Laboratory of Advanced Special Steel and Shanghai Key Laboratory of Advanced Ferrometallurgy Shanghai UniversityShanghai 200444China The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Electromagnetic stirring(EMS)is a well-known and widely used technology for controlling the fluid flow in continuous casting mold,and therein the selection of stirrer position is closely related to final *** investigate the effect of stirrer position on initial solidification and inclusion capturing,a mathematical model coupling with electromagnetic field,turbulence flow,solidification,and inclusion movement was *** comparing the magnetic flux density,flow field and solidified shell thickness with measured data,the reliability of the mathematical model was *** uniform index has been introduced to judge the uniformity of solidified shell,and the washing effects of EMS on the numbers and distribution of captured inclusions were *** results show that a diagonal jet flow toward the mold wide face has generated when EMS is applied,and upper EMS position can effectively improve the uniformity of temperature and the solidified shell within the ***,due to the washing effect of EMS,the number of inclusions inside the solidified shell decreases,and the distribution of captured inclusions along the mold width changes *** the stirrer position,the uniform index decreases firstly and then increases,and the probability of inclusion capture by solidified shell ***,the upper stirrer position is suggested,with which the uniformity of solidified shell and cleanliness of slab are rational.

关键词： Slab continuous casting EMS position Flow Heat transfer Uniform index Solidified shell Inclusion capture

Extraction of Tetracycline via Ionic Liquid Two-phase System

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Chemical Research in Chinese Universities 2009年第6期25卷 832-835页

作者： MA Chun-hong WANG Liang YAN Yong-sheng CHE Guang-bo YIN Yan-su WANG ren-zhang LI Dong-ying Institute of Environment Jiangsu University Zhenjiang 212013 P. R. China Institute of Chemistry Jilin Normal University Siping 136000 P. R. China Department of Chemistry and Biological Engineering Sanming University Sanming 365004 P. R. China

A new method to extract and separate tetracycline（TC） in a new aqueous tyro-phase system（ATPS） consisting of hydrophilic [Bmim]BF4 and NaH2PO4 was investigated. The effects of the amount of salt, ionic liquid as well as tetracycline on extraction efficiency were studied systematically. The results show that ionic liquid-ATPS exhibited the highest extraction efficiency higher than 90%. When the concentration of NaH2PO4 was 33.3%--38.5% （mass fraction）, the amounts of ionic liquid and TC were 1.0--2.0 mL and 1.8 mL, respectively, and ionic liquid could be re-used.

关键词： Ionic liquid Aqueous two-phase Tetracycline Extraction separation

Priming strategies for controlling stem cell fate: Applications and challenges in dental tissue regeneration

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World Journal of Stem Cells 2021年第11期13卷 1625-1646页

作者： Si-Yuan Zhang Jia-Yin ren bo Yang State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Oral Radiology West China Hospital of StomatologySichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Oral and Maxillofacial Surgery West China Hospital of StomatologySichuan UniversityChengdu 610041Sichuan ProvinceChina

Mesenchymal stromal cells(MSCs)have attracted intense interest in the field of dental tissue *** tissue is a popular source of MSCs because MSCs can be obtained with minimally invasive *** possess distinct inherent properties of self-renewal,immunomodulation,proangiogenic potential,and multilineage potency,as well as being readily available and easy to ***,major issues,including poor engraftment and low survival rates in vivo,remain to be resolved before large-scale application is feasible in clinical ***,some recent investigations have sought ways to optimize MSC functions in vitro and in ***,priming culture conditions,pretreatment with mechanical and physical stimuli,preconditioning with cytokines and growth factors,and genetic modification of MSCs are considered to be the main strategies;all of which could contribute to improving MSC efficacy in dental regenerative *** in this field has made tremendous progress and continues to gather interest and stimulate *** this review,we summarize the priming approaches for enhancing the intrinsic biological properties of MSCs such as migration,antiapoptotic effect,proangiogenic potential,and regenerative *** in current approaches associated with MSC modification and possible future solutions are also *** aim to outline the present understanding of priming approaches to improve the therapeutic effects of MSCs on dental tissue regeneration.

关键词： Mesenchymal stem cells Priming Dental regeneration Culture conditions Cytokines Growth factors Genetic modification

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铂修饰氮化铝纳米管对CO的吸附性能研究

原子与分子物理学报 2025年第1期42卷 88-94页

作者：任舒宁何建桥黄海深沈光先吴波贵州师范大学物理与电子科学学院贵阳550025 遵义师范学院物理与电子科学学院遵义563006

本文采用基于密度泛函理论的第一性原理研究了铂修饰的(5,5)氮化铝纳米管的几何结构、电子性质以及与一氧化碳(CO)之间的相互作用.结果表明:铂原子吸附于氮化铝纳米管表面氮原子的顶位时能量最低.铂原子附近可以吸附四个CO分子,平均吸... 详细信息

本文采用基于密度泛函理论的第一性原理研究了铂修饰的(5,5)氮化铝纳米管的几何结构、电子性质以及与一氧化碳(CO)之间的相互作用.结果表明:铂原子吸附于氮化铝纳米管表面氮原子的顶位时能量最低.铂原子附近可以吸附四个CO分子,平均吸附能在1.189-2.940 eV之间,铂原子的修饰有效提高了氮化铝纳米管对CO分子的吸附能力.本研究为实验上开发制备性能更加优良的CO气体传感器提供理论指导.

关键词：氮化铝纳米管第一性原理密度泛函理论