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| 1 | Tribological properties of copper matrix composites reinforced with homogeneously dispersed graphene nanosheets显示文摘Graphene reinforced copper matrix composites(Gr/Cu) were fabricated by electrostatic self-assembly and powder metallurgy. The morphology and structure of graphene oxide, graphene oxide-Cu powders and Gr/Cu composites were characterized by scanning electronic microscopy, transmission electronic microscopy, X-ray diffraction and Raman spectroscopy, respectively. The effects of graphene contents,applied loads and sliding speeds on the tribological behavior of the composites were investigated. The results indicate that the coefficient of friction of the composites decreases first and then increases with increasing the graphene content. The lowest friction coefficient is achieved in 0.3 wt% Gr/Cu composite,which decreases by 65% compared to that of pure copper. The coefficient of friction of the composite does not have significant change with increasing the applied load, however, it increases with increasing the sliding speed. The tribological mechanisms of the composite under different conditions were also investigated. | Xin Gao Hongyan Yue Erjun Guo Shaolin Zhang Longhui Yao Xuanyu Lin Bao Wang Enhao Guan | 2018 | Journal of Materials Science & Technology2018，34，10： | 9 |
| 2 | Research on microstructure in as-cast 7A55 aluminum alloy and its evolution during homogenization显示文摘The microstructure of the as-cast 7A55 aluminum alloy and its evolution during homogenization were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) analysis. The results indicate that the microstructure of the as-cast 7A55 aluminum alloy mainly consists of the dendritic network of aluminum solid solution, Al/AlZnMgCu eutectic phases, and intermetallic compounds MgZn2, Al2CuMg, Al7Cu2Fe, and Al23CuFe4. After homogenization at 470°C for 48 h, Al/AlZnMgCu eutectic phases are dissolved into the matrix, and a small amount of high melting-point secondary phases were formed, which results in an increasing of the starting melting temperature of 7A55 aluminum alloy. The high melting-point secondary phases were eliminated mostly when the homogenization time achieved to 72 h. Therefore, the reasonable homogenization heat treatment process for 7A55 aluminum alloy ingots was chosen as 470°C/72 h. | LV Xinyu GUO Erjun LI Zhihui WANG Guojun | 2011 | Rare Metals2011，30，6： | 8 |
| 3 | Physical modeling of spent-nuclearfuel container显示文摘A new physical simulation model was developed to simulate the casting process of the ductile iron heavy section spent-nuclear-fuel container.In this physical simulation model,a heating unit with DR24 Fe-Cr-Al heating wires was used to compensate the heat loss across the non-natural surfaces of the sample,and a precise and reliable casting temperature controlling/monitoring system was employed to ensure the thermal behavior of the simulated casting to be similar to the actual casting.Also,a mould system was designed,in which changeable mould materials can be used for both the outside and inside moulds for different applications.The casting test was carried out with the designed mould and the cooling curves of central and edge points at different isothermal planes of the casting were obtained.Results show that for most isothermal planes,the temperature control system can keep the temperature differences within 6 ℃ between the edge points and the corresponding center points,indicating that this new physical simulation model has high simulation accuracy,and the mould developed can be used for optimization of casting parameters of spent-nuclear-fuel container,such as composition of ductile iron,the pouring temperature,the selection of mould material and design of cooling system.In addition,to maintain the spheroidalization of the ductile iron,the force-chilling should be used for the current physical simulation to ensure the solidification of casting in less than 2 h. | Wang Liping Guo Erjun Jiang Wenyong Xue Muyu Liu Dongrong Ren Shanzhi | 2012 | China Foundry2012，9，4： | 5 |
| 4 | Tuning the intermolecular interaction of A_(2)-A_(1)-D-A_(1)-A_(2) type non-fullerene acceptors by substituent engineering for organic solar cells with ultrahigh V_(OC) of ~1.2 V显示文摘For non-fullerene acceptors(NFAs)with linear A_(2)-A_(1)-D-A_(1)-A_(2) backbone,there are three kinds of possible intermolecular interaction,A_(1)-A_(1),A_(1)-A_(2) and A_(2)-A_(2) stacking.Hence,it is a huge challenge to control this interaction and investigate the effect of intermolecular stacking model on the photovoltaic performance.Here,we adopt a feasible strategy,by utilizing different substituent groups on terminal A2 unit of dicyanomethylene rhodanine(RCN),to modulate this stacking model.According to theoretical calculation results,the molecule BTA3 with ethyl substituent packs via heterogeneous interaction between A_(2) and A_(1) unit in neighboring molecules.Surprisingly,the benzyl group can effectively transform the aggregation of BTA5 into homogeneous packing of A_(2)-A_(2) model,which might be driven by the strong interaction between benzyl and A1(benzotriazole)unit.However,different with benzyl,phenyl end group impedes the intermolecular interaction of BTA4 due to the large steric hindrance.When using a BTA-based D-π-A polymer J52-F as donor according to“Same-A-Strategy”,BTA3-5 could achieve ultrahigh open-circuit voltage(VOC)of 1.17–1.21 V.Finally,BTA5 with benzyl groups realized an improved power conversion efficiency(PCE)of 11.27%,obviously higher than that of BTA3(PCE=9.04%)and BTA4(PCE=5.61%).It is also worth noting that the same trend can be found when using other four classic p-type polymers of P3HT,PTB7,PTB7-Th and PBDB-T.This work not only investigates the intermolecular interaction of A_(2)-A_(1)-D-A_(1)-A_(2) type NFAs for the first time,but also provides a straightforward and universal method to change the interaction model and improve the photovoltaic performance. | Xiaochen Wang Ailing Tang Jing Yang Mengzhen Du Jianfeng Li Gongqiang Li Qiang Guo Erjun Zhou | 2020 | Science China Chemistry2020，63，11： | 5 |
| 5 | Non-contact cylindrical rotating triboelectric nanogenerator for harvesting kinetic energy from hydraulics显示文摘Hydraulics provide a unique and widely existed mechanical energy source around us,such as in water or oil pipes,and sewers.Here,a non-contact cylindrical rotating triboelectric nanogenerator(TENG)was developed to harvest the mechanical energy from water flows.Operation of the TENG was based on the non-contact free-rotating between a curved Cu foil and a flexible nanostructured fluorinated ethylene propylene(FEP)polymer film.The free-standing distance between two rotating interfaces avoided abrading of electrode materials.The TENG was able to effectively convert mechanical energy of the water flow into electricity.When driven by water flow,the output voltage and current of the TENG reached 1,670 V and 13.4 uA,respectively.Without any energy storage component,the produced electricity could instantaneously power 12 white light emitting diodes(LEDs)bulbs and a digital timer.This non-contact rotating TENG would provide new opportunities for harvesting energy from many types of hydraulics as a self-sustainable power source for sensing,detection,and protection. | Nan Zhang Cheng Qin Tianxing Feng Jun Li Zhirui Yang Xiupeng Sun Erjun Liang Yanchao Mao Xudong Wang | 2020 | Nano Research2020，13，7： | 4 |
| 6 | Rotary impeller refinement of 7075Al alloy显示文摘The effects of four parameters, gas flow, rotational speed, refining time, and stewing time, on the rotary impeller refinement of 7075 Al were studied. The effects of C2Cl6 refining, rotary impeller refining, and composite refining of 7075 Al alloy were compared with each other. The results showed that the greatest impact parameter of rotary impeller refinement was rotational speed, followed by gas flow, refining time, and stewing time. The optimum purification parameters obtained by orthogonal analysis were as follows: rotor speed of 400 r/min, inert gas flow of 0.4 mL/h, refining time of 15 min, and stewing time of 6 min. The best degassing effect can be obtained by the composite refining of C2Cl6 and rotary impeller. The degassing rate of C2Cl6, rotary impeller, and composite refining was 34.5%, 69.2%, and 78%, respectively. The mechanical properties of the specimen refined by rotary impeller were higher than those by C2Cl6 refining, but lower than those by composite refining. | WANG Liping GUO Erjun HUANG Yongchang LU Bin | 2009 | Rare Metals2009，28，3： | 4 |
| 7 | Effect of Bi on graphite morphology and mechanical properties of heavy section ductile cast iron显示文摘To improve the mechanical properties of heavy section ductile cast iron, bismuth(Bi) was introduced into the iron. Five castings with different Bi content from 0 to 0.014 wt.% were prepared; and four positions in the casting from the edge to the center, with different solidifi cation cooling rates, were chosen for microstructure observation and mechanical properties test. The effect of the Bi content on the graphite morphology and mechanical properties of heavy section ductile cast iron were investigated. Results show that the tensile strength, elongation and impact toughness at different positions in the fi ve castings decrease with a decrease in cooling rate. With an increase in Bi content, the graphite morphology and the mechanical properties at the same position are improved, and the improvement of mechanical properties is obvious when the Bi content is no higher than 0.011wt.%. But when the Bi content is further increased to 0.014wt.%, the improvement of mechanical properties is not obvious due to the increase of chunky graphite number and the aggregation of chunky graphite. With an increase in Bi content, the tensile fracture mechanism is changed from brittle to mixture ductile-brittle fracture. | Song Liang Guo Erjun Tan Changlong | 2014 | China Foundry2014，11，2： | 4 |
| 8 | Effects of RE,V,Ti and B composite modification on the microstructure and properties of high chromium cast iron containing 3% molybdenum显示文摘The effects of RE, V, Ti and B on the microstructure and properties of high chromium cast iron containing 3% molybdenum under as-cast and heat treatment conditions were investigated with the method of comparing experiments. The results show that with the increase of RE content, the primary austenite of high chromium cast iron is obviously refined. The morphology of carbide is changed from netlike and lath to small multiangular isolated blocks or massive blocks, the isolated degree of carbide is improved obviously, and the size is significantly refined. The addition of V and B into high chromium cast iron can refine the microstructure, reduce coarse columnar crystals and make the carbide smaller and uniform. Through composite modification with RE, V, Ti and B, the hardness, wear resistance and impact toughness of high chromium cast iron are increased conspicuously. After heat treatment, the hardness of high chromium iron is increased significantly, but the toughness and wear resistance do not show great improvement. | GUO Erjun WANG Lihua WANG Liping HUANG Yongchang | 2009 | Rare Metals2009，28，6： | 4 |
| 9 | BHMT Gene Polymorphisms as Risk Factors for Cleft Lip and Cleft Palate in a Chinese Population显示文摘Objective Convincing evidence suggests a link between increased risk of nonsyndromic cleft lip with or without cleft palate (NSCL/P) and low intake of folic acid by the mother during pregnancy. The present study was designed to explore if genetic variation in the betaine‐homocysteine methyltransferase (BHMT) gene contributes to NSCL/P. Methods DNA was obtained from 166 individuals with NSCL/P and 285 healthy subjects. Three known single nucleotide polymorphisms (SNPs) present in the BHMT gene (rs651852, rs3797546, and rs3733890) were investigated by real‐time PCR‐based TaqMan genotyping. Results Neither allelic nor genotypic association was found between NSCL/P and SNPs rs651852 and rs3733890. SNP rs3797546 did not show allelic association with NSCL/P; however, a higher proportion of NSCL/P patients carry the CC genotype compared with the TT+CT genotype (P=0.020, OR=2.10, 95% CI=1.11‐3.95). Conclusion Our study suggests that polymorphism rs3797546 in the BHMT gene may confer genetic risk of NSCL/P in a recessive manner. | HU Ying CHEN ErJun MU Yue LI JinLu CHEN RenJi | 2011 | Biomedical and Environmental Sciences2011，24，2： | 3 |
| 10 | Negative thermal expansion: Mechanisms and materials显示文摘Negative thermal expansion(NTE)of materials is an intriguing phenomenon challenging the concept of traditional lattice dynamics and of importance for a variety of applications.Progresses in this field develop markedly and update continuously our knowledge on the NTE behavior of materials.In this article,we review the most recent understandings on the underlying mechanisms(anharmonic phonon vibration,magnetovolume effect,ferroelectrorestriction and charge transfer)of thermal shrinkage and the development of NTE materials under each mechanism from both the theoretical and experimental aspects.Besides the low frequency optical phonons which are usually accepted as the origins of NTE in framework structures,NTE driven by acoustic phonons and the interplay between anisotropic elasticity and phonons are stressed.Based on the data documented,some problems affecting applications of NTE materials are discussed and strategies for discovering and design novel framework structured NET materials are also presented. | Erjun Liang Qiang Sun Huanli Yuan Jiaqi Wang Gaojie Zeng Qilong Gao | 2021 | Frontiers of physics2021，16，5： | 3 |
| 11 | Integrated histopathological,lipidomic,and metabolomic profiles reveal mink is a useful animal model to mimic the pathogenicity of severe COVID-19 patients显示文摘Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is transmitted on mink farms between minks and humans in many countries.However,the systemic pathological features of SARS-CoV-2-infected minks are mostly unknown.Here,we demonstrated that minks were largely permissive to SARS-CoV-2,characterized by severe and diffuse alveolar damage,and lasted at least 14 days post inoculation(dpi).We first reported that infected minks displayed multiple organ-system lesions accompanied by an increased inflammatory response and widespread viral distribution in the cardiovascular,hepatobiliary,urinary,endocrine,digestive,and immune systems.The viral protein partially co-localized with activated Mac-2+macrophages throughout the body.Moreover,we first found that the alterations in lipids and metabolites were correlated with the histological lesions in infected minks,especially at 6 dpi,and were similar to that of patients with severe and fatal COVID-19.Particularly,altered metabolic pathways,abnormal digestion,and absorption of vitamins,lipids,cholesterol,steroids,amino acids,and proteins,consistent with hepatic dysfunction,highlight metabolic and immune dysregulation.Enriched kynurenine in infected minks contributed to significant activation of the kynurenine pathway and was related to macrophage activation.Melatonin,which has significant anti-inflammatory and immunomodulating effects,was significantly downregulated at 6 dpi and displayed potential as a targeted medicine.Our data first illustrate systematic analyses of infected minks to recapitulate those observations in severe and fetal COVID-19 patients,delineating a useful animal model to mimic SARS-CoV-2-induced systematic and severe pathophysiological features and provide a reliable tool for the development of effective and targeted treatment strategies,vaccine research,and potential biomarkers. | Zhiqi Song Linlin Bao Wei Deng Jiangning Liu Erjun Ren Qi Lv Mingya Liu Feifei Qi Ting Chen Ran Deng Fengdi Li Yunpeng Liu Qiang Wei Hong Gao Pin Yu Yunlin Han Wenjie Zhao Junjun Zheng Xujian Liang Fuhe Yang Chuan Qin | 2022 | Signal Transduction and Targeted Therapy2022，7，2： | 2 |
| 12 | Wide Band Gap Non-Fullerene Small Molecular Acceptors Containing Spirobifluorene and Benzotriazole with Three Different End-Capped Groups for P3HT-Based Organic Solar Cells显示文摘 | Xiaoyu Wen Bo Xiao Ailing Tang Junyi Hu Chunhe Yang Erjun Zhou | 2018 | Chinese Journal of Chemistry2018，36，5： | 2 |
| 13 | Influences of different degassing processes on refining effect and properties of 4004 Al alloy显示文摘In order to improve the plasticity of 4004 Al alloy and subsequently the productivity of 4004 Al foil, the research studied in detail the influence of the rotary impeller degassing process on the refining effect of 4004 Al alloy, in which the impacts of four major parameters: gas flow, rotational speed, refining time, and stewing time, on degassing rate of 4004 Al alloy was systematically studied by using an orthogonal experiment methodology. Results show that the rotational speed has the greatest impact on the degassing of 4004 Al alloy, followed by gas flow and refining time; stewing time has the least impact. The optimum purification parameters obtained by current orthogonal analysis were: rotor speed of 500 r·min-1, inert gas flow of 0.4 mL·h-1, refining time of 15 min, and stewing time of 6 min. Degassing rate using the optimum parameters reaches 68%. In addition, the comparison experiments among C2Cl6 refining, rotary impeller degassing, and combined treatment of C2Cl6 refining and rotary impeller degassing for 4004 Al alloy were performed. The experimental data indicated that the combined treatment of C2Cl6 refining and rotary impeller degassing has the best degassing effect. Degassing rate of C2Cl6 refining, rotary impeller degassing and combined refining treatment is 39%, 69.1% and 76.9%, respectively. The mechanical properties of the specimen refined by rotary impeller degassing were higher than those by C2Cl6 refining, but lower than those by combined refining treatment. | Wang Liping Cao Guojian Guo Erjun Wang Guojun Lü Xinyu | 2013 | China Foundry2013，10，2： | 2 |
| 14 | Microstructure and wear resistance of TaC reinforced Ni-based coating by laser cladding 显示文摘 | Chao Mingju Wang Wenli Liang Erjun | 2008 | Surface and Coatings Technology2008，202，10： | 1 |
| 15 | Microstructure and wear resistance of TaC reinforced Ni-based coating by laser cladding 显示文摘 | CHAO MINGJU WANG WENLI LIANG ERJUN | 2008 | Surface and Coatings Technology2008，，202： | 1 |
| 16 | Lysozyme inhibits postharvest physiological deterioration of cassava显示文摘After harvest,cassava(Manihot esculenta Crantz)storage roots undergo rapid postharvest physiological deterioration,producing blue-brown discoloration in the vasculature due to the production of polyphenolics(mainly quinonesand coumarins)by enzymes such as polyphenol oxidase(PPO).Here,we report the application of hen egg-white lysozyme(HEWL),a natural PPO inhibitor,in transgenic cassava to repress the symptoms of postharvest physiological deterioration.The HEWL-expressing transgenic plants had lower levels of the two main cassava coumarins tested,scopoletin and scopolin,compared with wild type.HEWL-expressing cassava also showed increased tolerance of oxidative stress.Overall,the lysozyme-PPO system proved to be functional in plants for repressing PPO-mediated commercial product browning. | Xiaoyun Wu Jia Xu Qiuxiang Ma Sulaiman Ahmed Xinlu Lu Erjun Ling Peng Zhang | 2022 | Journal of Integrative Plant Biology2022，64，3： | 1 |
| 17 | Investigation on the microstructure and cracking susceptibility of laser-clad V2O5/NiCrBSiC alloy coatings 显示文摘 | Wang Dongsheng Liang Erjun Chao Mingju | 2008 | Surf Coat Techn2008，202，： | 1 |
| 18 | Investigation of monolithic quesi-planar ring lasers显示文摘 | Zang Erjun Cao Hongjun Zhao Kun et al | 1998 | SPIE1998，3549，： | 1 |
| 19 | Crystal struc- tures and elastic properties of superhard IrN2 and IrN3 from first principles显示文摘 | Wu Zhijian Zhao Erjun Xiang Hongping | 2007 | Phys Rev B2007，76，5： | 1 |
| 20 | Gradual chlorination at different positions of D-π-A copolymers based on benzodithiophene and isoindigo for organic solar cells显示文摘Isoindigo(IID)has been widely used as strong acceptor unit(A)to construct narrow bandgap polymers in organic field effect transistors(OFETs)and organic solar cells(OSCs).Combing with IID,we chose benzodithiophene(BDT)as the donor unit(D)and thieno[3,2-b]thiophene(TT)as theπbridge to construct a new type of D-π-A polymer PE70.Based on PE70,we adopt the chlorination strategy to fine-tune photoelectric characteristics and film morphology,and then developed PE74 and PE75.By blending with non-fullerene acceptor(NFA)Y6,device based on PE74 with chloride substitution on the BDT unit showed increasing photovoltaic performance.In addition,further chlorine substitution on the IID(PE75)would greatly reduce the non-radiative voltage loss(ΔV3),and the distorted molecular conformation also took responsible for the excessive recombination.As results,PE74:Y6-based device achieves a power conversion efficiency(PCE)of 11.06%with open-circuit voltage(VOC)of 0.76 V,which are higher than those of PE70:Y6(PCE of 10.40%and VOC of 0.72 V)and PE75:Y6-based device(PCE of 6.24%and VOC of 0.84 V).This work demonstrates the regularity of the photovoltaic performance caused by chlorination strategy in polymer in the non-fullerene OSC devices,which provide important insights into highperformance photovoltaic materials. | Jialing Zhou Bao Zhang Yanfang Geng Qing Guo Qiang Guo Erjun Zhou | 2021 | Materials Reports(Energy)2021，1，4： | 1 |
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