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Journal of Iron and Steel Research International 2018年第3期25卷 282-290页

作者： Zhong-kun Bai Li-ming Du Ming Chen Min Zhang xiao-hui shi hui-jun Yang College of Materials Science and Engineering TaiyuanUniversity of Technology Taiyuan 030024 Shanxi China

A systematic research on the tribological characteristics of Ti48Zr20Nb12Cu5Be15 metallic glass matrix composites was performed under different normal loads in dry condition and simulated seawater. The wear rate decreased with the increase in normal load under dry and simulated seawater conditions. The friction coefficient was lower in the dry condition than in the simulated seawater. The composite showed better wear resistance at lower loads （3, 5 and 10 N） hut poor wear resistance at higher loads （15 and 17 N） in the simulated seawater. The analysis of the worn surface illustrated that the wear mechanism in dry condition was plastic deformation, adhesive wear and abrasive wear at 3 and 5 N, while it was abrasive wear and adhesive wear at 10, 15 and 17 N. The wear mechanism in simulated seawater was abrasive wear, plastic deformation and adhesive wear at 3 N, adhesive wear at 10 N, and abrasive wear at 5, 15 and 17 N. At the same time, the corrosion occurred during wear tests in the simulated seawater.

关键词： Amorphous material Rapid solidification Friction Wear Corrosion

Entropy versus enthalpy in hexagonal-close-packed highentropy alloys

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Rare Metals 2022年第8期41卷 2906-2920页

作者： Xin-Wei Yang xiao-hui shi hui-Jun Yang Jun-Wei Qiao Peter KLiaw Yu-Cheng Wu College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024China School of Materials Science and Engineering University of TennesseeKnoxville37996USA School of Materials Science and Engineering Hefei University of TechnologyHefei230000China

The addition of hexagonal-close-packed(hcp)non-rare-earth elements Zr,Ti and Co,to the 10-component hep rare-earth-based high-entropy alloys(HEAs)with a composition of ScYLaNdGdTbDyHoErLuX(X=Zr,Co and Ti)was *** enthalpy of mixing between elements was found to have a significant effect on the formation of *** addition of Co combines with elements that had a strong chemical affinity to form intermetallic compounds by the effect of *** was added with all elements with poor chemical affinity and exhibited rejection to form a phase *** were the two terminal manifestations of the role of enthalpy over *** of Zr was soluble in the matrix under the action of entropy,while the other part had a greater affinity for Sc than the other elements to form a precipitate under the action of *** was the result of the local balance between the effect of enthalpy and *** solid solution of the elements had different degrees of strengthening effect,among which Zr had the most excellent strengthening effect from 185 to 355 MPa,so the solid solution strengthening model and precipitation strengthening model were proposed to predict the strength of the alloy with the addition of Zr effectively.

关键词： High-entropy alloys Hexagonal close-packed(hcp) Phase formation rule Configuration entropy Mechanical properties

Tensile strength prediction of dual-phase Al0.6CoCrFeNi high-entropy alloys

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International Journal of Minerals,Metallurgy and Materials 2020年第10期27卷 1341-1346页

作者： Min Zhang Jin-xiong Hou hui-jun Yang Ya-qin Tan Xue-jiao Wang xiao-hui shi Rui-peng Guo Jun-wei Qiao College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China

The evolution of the microstructure and tensile properties of dual-phase Al0.6CoCrFeNi high-entropy alloys(HEAs)subjected to cold rolling was *** homogenized Al0.6CoCrFeNi alloys consisted of face-centered-cubic and body-centered-cubic phases,presenting similar mechanical behavior as the as-cast *** yield and tensile strengths of the alloys could be dramatically enhanced to^1205 MPa and^1318 MPa after 50%rolling reduction,respectively.A power-law relationship was discovered between the strain-hardening exponent and rolling *** tensile strengths of this dual-phase HEA with different cold rolling treatments were predicted,mainly based on the Hollomon relationship,by the strain-hardening exponent,and showed good agreement with the experimental results.

关键词： dual-phase high-entropy alloys cold rolling strain-hardening exponent tensile strength

Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety

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Chinese Journal of Polymer Science 2018年第12期36卷 1375-1384页

作者： xiao-hui shi Li Chen Bo-Wen Liu Jia-Wei Long Ying-Jun Xu Yu-Zhong Wang School of Chemical Engineering National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610064 China

The achievement of both robust fire-safety and mechanical properties is of vital requirement for carbon fiber （CF） composites. To this end, a facile interracial strategy for fabricating flame-retardant carbon fibers decorated by bio-based polyelectrolyte complexes （PEC） consisting of chitosan （CH） and ammonium polyphosphate （APP） was developed, and its corresponding fire-retarded epoxy resin composites （EP/（PEC@CF）） without any other additional flame retardants were prepared. The decorated CFs were characterized by SEM- EDX, XPS and XRD, indicating that the flame-retardant PEC coating was successfully constructed on the surface of CF. Thanks to the nitrogen- and phosphorous-containing PEC, the resulting composites exhibited excellent flame retardancy as the limiting oxygen index （LOI） increased from 31.0% of EP/CF to 40.5% and UL-94 V-0 rating was achieved with only 8.1 wt% PEC. EP/（PEC8.1@CF） also performed well in cone calorimetry with the decrease of peak-heat release rate （PHRR） and smoke production rate （SPR） by 50.0% and 30.4%, respectively, and the value of fire growth rate （FIGRA） was also reduced to 3.41 kW·m-2- s-1 from 4.84 kW· m-2· s-1, suggesting a considerably enhanced fire safety. Furthermore, SEM images of the burning residues revealed that the PEC coating exhibited the dominant flame-retardant activity in condensed phase via the formation of compact phosphorus-rich char. In addition, the impact strength of the composite was improved, together with no obvious deterioration of flexural properties and glass transition temperature. Taking advantage of the features, the PEC-decorated carbon fibers and the relevant composites fabricated by the cost-effective and facile strategy would bring more chances for widespread applications.

关键词： Fire safety Carbon fiber composites Epoxy resin Polyelectrolyte complexes

Sign reversal and manipulation of anomalous Hall resistivity in facing-target sputtered Pt/Mn_(4)N bilayers

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Rare Metals 2023年第2期42卷 591-601页

作者： Ze-Yu Zhang Jia-Wei Jiang xiao-hui shi Xiang Liu Xia Chen Zhi-Peng Hou Wen-Bo Mi Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology School of ScienceTianjin UniversityTianjin300354China School of Physics and Electronic Engineering Linyi UniversityLinyi276000China College of Science Civil Aviation University of ChinaTianjin300300China Guangdong Provincial Key Laboratory of Optical Information Materials and Technology&Institute for Advanced Materials South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou510006China

The magnetic and electronic transport properties manipulated by spin-orbit torque have been devoted much attention as they show a great promise for future spintronic ***,the spin dependent transport properties of the facing-target sputtered Pt/Mn_(4)N bilayers on MgO(001)substrates have been investigated *** Hall resistivity of Pt/Mn_(4)N bilayers is strongly dependent on temperature,applied current intensity,Mn_(4)N and Pt layer *** temperature-dependent sign reversal of anomalous Hall resistivity appears in Pt/Mn_(4)N bilayers,which is dominated by the competition between the magnetic proximity and spin Hall ***,the magnitude of anomalous Hall resistivity can be manipulated by applied current *** critical and saturation currents are related to Mn_(4)N and Pt layer ***,a Dzyaloshinskii-Moriya interaction coefficient(D)of 5.63 mJ·m^(-2)is calculated in Pt/Mn_(4)N/MgO *** details of the anomalous Hall effects in Pt/Mn_(4)N bilayers are helpful to understand the interfacial effects between heavy metals and ferrimagnets.

关键词： Pt/Mn_(4)N bilayer Hall resistivity Magnetic proximity effect Spin Hall effect(SHE) DzyaloshinskiiMoriya interaction(DMI)

Time-Delayed Feedback Control in a Single-Mode Laser System

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Communications in Theoretical Physics 2007年第12期48卷 1055-1058页

作者： GU xiao-hui ZHU shi-Qun WU Dan School of Physical Science and Technology,Suzhou University,Suzhou 215006,China School of Physical Science and Technology Suzhou University

The effects of time-delayed feedback control in a single-mode laser system is *** the smalltime delay approximation,the analytic expression of the stationary probability distribution function of the laser field *** mean,normalized variance and skewness of the steady-state laser intensity are *** is found thatthe time-delayed feedback control can suppress the intensity fluctuation of the laser *** numerical simulationsare in good agreement with the approximate analytic results.

关键词： time-delayed feedback single-mode laser stationary probability distribution function

Static coarsening behavior of equiaxed α phase in Ti-8Al-1Mo-1V alloy

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Transactions of Nonferrous Metals Society of China 2021年第6期31卷 1628-1640页

作者： xiao-hui shi Zu-han CAO Zhi-yuan FAN Jürgen ECKERT Jun-wei QIAO College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Erich Schmid Institute of Materials Science Austrian Academy of SciencesLeobenA-8700Austria Department of Materials Science Chair of Materials PhysicsMontanuniversität LeobenLeobenA-8700Austria

To get a deep understanding of the evolution behavior of equiaxedαphase in Ti−8Al−1Mo−1V alloy during annealing,its static coarsening mechanism was studied based on the calculations of coarsening exponent n and the activation energy forαboundary *** result of n=6 indicates a special coarsening mechanism of equiaxedα*** activation energy forαboundary migration is calculated to be 138 kJ/mol,which is close to the activation energy for grain growth of pureα-*** is revealed that the coarsening of equiaxedαcan be mainly attributed to the self-diffusion of Ti atoms across theα/α*** on the experimental findings,a static coarsening kinetics model of equiaxedαgrains in theα+βfield is *** last,the effects of the coarsening behavior of equiaxedαon tensile properties were studied.

关键词： static coarsening kinetics model tensile properties Ti−8Al−1Mo−1V

Prevention and treatment of gastrointestinal dysfunction following severe burns: A summary of recent 30-year clinical experience

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World Journal of Gastroenterology 2008年第20期14卷 3231-3235页

作者： shi-Chu xiao shi-hui Zhu Zhao-Fan Xia Wei Lu Guang-Qing Wang Dao-Feng Ben Guang-Yi Wang Da-Sheng Cheng Department of Burn Surgery Changhai HospitalSecond Military Medical University 174 Changhai RoadShanghai 200433 China

AIM： To sum up the recent 30-year experience in the prevention and treatment of gastrointestinal dysfunction in severe burn patients, and propose practicable guidelines for the prevention and treatment of gastrointestinal （GI） dysfunction. METHODS： From 1980 to 2007, a total of 219 patients with large area and extraordinarily large area burns （LAB） were admitted, who were classified into three stages according the therapeutic protocols used at the time： Stage 1 from 1980 to 1989, stage 2 from 1990 to 1995, and stage 3 from 1996 to 2007. The occurrence and mortality of GI dysfunction in patients of the three stages were calculated and the main causes were analyzed. RESULTS： The occurrence of stress ulcer in patients with LAB was 8.6% in stage 1, which was significantly Dower than that in stage 1 （P 〈 0.05）. No massive hemorrhage from severe stress ulcer and enterogenic infections occurred in stages 2 and 3. The occurrence of abdominal distension and stress ulcer and the mortality in stage 3 patients with extraordinarily LAB was 7.1%, 21.4% and 28.5%, respectively, which were significantly lower than those in stage 1 patients （P 〈 0.05 or P 〈 0.01）, and the occurrence of stress ulcer was also significantly lower than that in stage 2 patients （P 〈 0.05）. CONCLUSION： Comprehensive fluid resuscitation, early excision of necrotic tissue, staged food ingestion, and administration of specific nutrients are essential strategies for preventing gastrointestinal complications and lowering mortality in severely burned patients.

关键词： Severe burn Gastrointestinal function Fluid resuscitation Staged food ingestion

急性Stanford A型主动脉夹层患者主动脉弓部手术后脑部并发症发病情况及危险因素分析

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中国现代医学杂志 2016年第11期26卷 98-101页

作者：刘艳石晓卉肖东新疆维吾尔自治区人民医院重症医学科新疆乌鲁木齐830000

目的回顾性分析急性Stanford A型主动脉夹层患者主动脉弓部手术后脑部并发症发病情况,并对其危险因素进行分析,为术后脑部并发症临床监测及干预提供依据。方法回顾性分析2006年1月-2012年12月该院收治的388例急性Stanford A型主动脉夹... 详细信息

目的回顾性分析急性Stanford A型主动脉夹层患者主动脉弓部手术后脑部并发症发病情况,并对其危险因素进行分析,为术后脑部并发症临床监测及干预提供依据。方法回顾性分析2006年1月-2012年12月该院收治的388例急性Stanford A型主动脉夹层行主动脉弓部手术患者的临床资料,对术后发生脑神经系统并发症的相关因素进行单因素及多因素Logistic回归分析。结果 388例患者术后发生脑神经系统并发症93例,其中短暂性神经系统功能不全(TND)80例(20.62%),永久性神经系统功能不全(PND)13例(3.35%)。多因素Logistic回归分析结果显示,TND发生的独立危险因素有术前白细胞水平较高、术前血肌酐水平较高、术中主动脉阻断时间较长、术中峰值血糖水平较高,差异有统计学意义(OR=1.972、1.846、1.825和2.089,P<0.05)。PND发生的独立性危险因素有年龄、脑卒中史(OR=1.756和2.848)。结论急性Stanford A型主动脉夹层行主动脉弓部手术后发生TND与术前白细胞、肌酐、术中主动脉阻断时间及血糖水平等密切相关,PND的发生与患者年龄和脑卒中史有关,术前抗感染治疗、降低血肌酐及术中积极控制血糖可减少脑部并发症的发生。

关键词： Stanford A型主动脉夹层主动脉弓部手术并发症危险因素

Glycosylation of recombinant human thyroid peroxidase ectodomain of insect cell origin has little effect on recognition by serum thyroid peroxidase antibody

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Chinese Medical Journal 2013年第15期126卷 2907-2911页

作者： LILT Ming-ming LI Qing ZHAO Lan-lan GAO Ying HUANG You-yuan LU Gui-zhi GAO Yan-ming GUO xiao-hui shi Bing-yin Peking Univ Hosp 1 Dept Endocrinol Beijing 100034 Peoples R China Chinese Acad Sci Inst Microbiol CAS Key Lab Pathogen Microbiol & Immunol Beijing 100101 Peoples R China Xi An Jiao Tong Univ Sch Med Affiliated Hosp 1 Dept Endocrinol Xian 710061 Shaanxi Peoples R China

Background Thyroid peroxidase （TPO） is an important autoantigen in Hashimoto＇s thyroiditis （HT）, and almost all epitopes are located in TPO ectodomain. The glycosylation of TPO might contribute to breaking self-tolerance, therefore, pudfied glycosylated recombinant TPO ectodomain is prerequisite of elucidating its role in the pathogenesis of HT. The aim of our study was to investigate whether the glycosylation has influence on the antigenic determinants of recombinant TPO. Methods Bac-to-Bac baculovirus expression system was used to generate recombinant human TPO ectodomain. The antigenicity was analyzed by antigen specific enzyme-linked immunosorbant assays （ELISAs）. The glycosylation of recombinant human TPO ectodomain of High Five insect cell origin was detected by lectin-ELISAs. Results TPO ectodomain was recovered from the culture media as a soluble protein, and it was fused with a hexahistidine tag which allowed purification by nickel-affinity chromatography. The recombinant TPO ectodomain could be recognized by all the 54 HT patients and three TPO monoclonal antibodies. Fucose, sialic acid and galactose were all detected on the recombinant TPO ectodomain. Sera TPOAb binding decreased slightly after non-specific deglycosylation of TPO by periodic acid. Conclusions High Five insect cells derived recombinant human TPO ectodomain had N-glycosylation sites, which might have little effect on recognition by serum TPOAb.

关键词： thyroid peroxidase baculovirus expression vector system sialic acid galactose fucose