|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Microstructure and mechanical properties in the TLP joint of FeCoNiTiAl and Inconel 718 alloys using BNi2 filler显示文摘High entropy alloy(HEA) of Fe Co Ni Ti Al and Inconel 718 superalloy were firstly transient liquid phase(TLP) bonded by BNi2 filler due to the diffusion of Si and B in the filler to the base metals. The effects of bonding time on microstructure evolution and mechanical properties of the TLP joints were investigated.Owing to the complete isothermal solidification of the joints bonded for 30 min 120 min at 1100°C,no athermally solidified zones(ASZs) formed by eutectic phases were observed in the welded zone. Thus the TLP joints were only composed by the isothermally solidified zone(ISZ) and two diffusion affected zone(DAZ) adjacent to the dissimilar base metals and the negative effect of the ASZ on joint properties can be avoided. In addition, the increase of the bonding time can also make the Ti B2 borides precipitated in the DAZ near HEA and the brittle borides or carbides in the DAZ near IN718 alloy decrease and reduce the possibility of the stress concentration happened in the joints under loading. Therefore, the highest shear strength(632.1 MPa) of the TLP joints was obtained at 1100°C for 120 min, which was higher than that of the joint bonded for 30 min, 404.2 MPa. Furthermore, the extension of the bonding time made the fracture mechanism of the joint be transformed from the intergranular fracture to the transgranular fracture. However, as the brittle borides in the DAZ near IN718 can not be eliminated completely and refining of grains also happened in such region, all the TLP joints fractured inner the DAZ near IN718 alloy. | Lin Yuan Jiangtao Xiong Yajie Du Jin Ren Junmiao Shi Jinglong Li | 2021 | Journal of Materials Science & Technology2021，，2： | 3 |
| 2 | Angular distribution of terahertz emission from laser interactions with solid targets显示文摘Intense femtosecond laser-plasma interactions can produce high power terahertz radiations.In our experiment,the polished copper target was irradiated by a p-polarized laser with intensity of more than 1018 W/cm2 at an incident angle of 67.5 from the target normal.The THz energy from three dierent detection angles is measured.The maximum emission is found in the direction at an angle of 45 to the laser backward direction,which is more than one order of magnitude higher than in the other two directions.A simple theoretical model has been established to explain the measurements. | DU Fei LI Chun ZHOU MuLin WANG WeiMin SU LuNing ZHENG Yi GE XuLei LI YuTong MA JingLong LIU XiaoLong ZHANG Lu SHENG ZhengMing CHEN LiMing LU Xin DONG QuanLi WANG ZhaoHua WEI ZhiYi ZHANG Jie | 2012 | Science China(Information Sciences)2012，55，1： | 2 |
| 3 | Synoptic-scale disturbances over the northern South China Sea and their responses to El Nio显示文摘Using surface and aerological meteorological observations obtained at the Xisha Automatic Weather Station and three moored buoys along the continental slope, characteristics of the synoptic-scale disturbances over the northern South China Sea (NSCS) are extensively studied. The power spectra of surface and aerological observations suggest a synoptic feature with a pronounced energy peak at a period of 5-8 d and a weak peak at 3-4 d. The standard deviation of the synoptic temperature component derived at Xisha Station from 1976 to 2011 indicates that the strongest variability normally exists in August all through the whole troposphere. At the interannual scale, it is found that El Nin o plays an important role in regulating the synoptic disturbances of atmosphere. The vertical synoptic disturbances have a double active peak following El Nin o condition. The first peak usually occurs during the mature phase of El Nin o, and the second one occurs in the summer of decay year. Comparing with the summer of developing years, the summer of the decaying year of El Nin o has more active and stronger synoptic disturbances, especially for the 5-8 d period variations. | ZENG Lili LI Xixi DU Yan SHI Rui YAO Jinglong WANG Dongxiao SUI Dandan | 2012 | Acta Oceanologica Sinica2012，31，5： | 1 |
| 4 | The influence of target material and thickness on proton energy and angular distribution显示文摘The paper has studied the influence of target material and thickness on energy and angular distributions of the protons generated by using an 800 nm,60 fs,0.24 J laser pulse to irradiate solid target foils.The results show that the initial density and thickness of the targets will affect the formation of the acceleration sheath fields in the target normal direction.For the same target thickness,using lower density target materials can obtain a higher proton maximum energy.However,lower density targets tend to be deformed due to the shock waves launched by the laser pulses,making the proton spatial distribution more divergent. | SU LuNing LIU BiCheng LIN XiaoXuan LIU Feng DU Fei LIU XiaoLong ZHENG Yi GE XuLei LI YuTong SHENG ZhengMing CHEN LiMing WANG WeiMin MA JingLong LU Xin WEI ZhiYi CHEN JiaEr ZHANG Jie | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，2： | 1 |
| 5 | A preliminary study on calculating method for the evolution of siltation and erosion of tidal flat based on GIS显示文摘 | Du Jinglong Gao ang Yang shilun | 2005 | Marine Science Bullein2005，7，1： | 1 |
| 6 | Polarization of terahertz emission out of incident plane from laser interactions with solid targets显示文摘A powerful terahertz(THz) pulse was produced by a p-polarized,70 fs,800 nm laser interacting with solid targets at an incident angle of 45°.The polarization of the THz emission was measured out of the laser incident plane.The results showed that it was linearly polarized.We established a surface current model to explain this phenomenon,assuming that the transient current moving along the plasma surface was responsible for the generation of the THz emission.The model expectation and the experimental result were in good agreement. | DU Fei LI Chun ZHOU MuLin WANG WeiMin SU LuNing ZHENG Yi LI YuTong MA JingLong SHENG ZhengMing CHEN LiMing LU Xin WANG ZhaoHua WEI ZhiYi ZHANG Jie | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，4： | 1 |
| 7 | MOF-derived zinc manganese oxide nanosheets with valence-controllable composition for high-performance Li storage显示文摘Zinc manganese oxide(ZMO)system represents a notable family of mixed transition metal oxides(MTMOs)because of their superiority of the high theoretical capacity,adequacy of natural content,and low cost.However,the methods to match both the reliable synthesis and the designable construction of large-sized two-dimensional(2D)ZMO nanosheets are still considered as grand challenges.Herein,we have successfully realized the preparation of 2D ZMO nanosheets with large lateral sizes up to~20 mm by simple pyrolysis of 2D metal–organic framework(MOF)nanosheets precursor.The growth mechanism of 2D MOF is proposed to be based on the lamellar micelles formed by polyvinyl pyrrolidone(PVP).The obtained 2D and porous ZMO nanosheets exhibit high specific capacity as well as good rate capability.More importantly,the as-prepared ZMO electrode shows a remarkable capacity increment upon cycling(from 832 mAh g^(-1) at the 2nd cycle to 1418 mAh g^(-1) at the 700th cycle,at 1 A g^(-1)).Through simple adjustment of the calcination temperature,the valence state of Mn species in the yielding ZMO samples can be fine-tuned.Through systematic investigation towards these ZMOs containing different Mn species,the extra specific capacity is revealed to be chiefly on account of the arising of the valence state of Mn upon the cycling process.Moreover,it is disclosed that the higher-valent Mn the pristine ZMO contains,the more additional capacity it gains upon cycling.We believe that this work will inspire more detailed analysis on the relationship between the valence state of Mn and extra capacity. | Yu Du Yihan Xu Weiwei Zhou Yaoyang Yu Xinzhou Ma Fei Liu Jinglong Xu Yongming Zhu | 2021 | Green Energy & Environment2021，6，5： | 1 |
| 8 | Application of Zero-Watermarking for Medical Image in Intelligent Sensor Network Security显示文摘The field of healthcare is considered to be the most promising application of intelligent sensor networks.However,the security and privacy protection ofmedical images collected by intelligent sensor networks is a hot problem that has attracted more and more attention.Fortunately,digital watermarking provides an effective method to solve this problem.In order to improve the robustness of the medical image watermarking scheme,in this paper,we propose a novel zero-watermarking algorithm with the integer wavelet transform(IWT),Schur decomposition and image block energy.Specifically,we first use IWT to extract low-frequency information and divide them into non-overlapping blocks,then we decompose the sub-blocks by Schur decomposition.After that,the feature matrix is constructed according to the relationship between the image block energy and the whole image energy.At the same time,we encrypt watermarking with the logistic chaotic position scrambling.Finally,the zero-watermarking is obtained by XOR operation with the encrypted watermarking.Three indexes of peak signal-to-noise ratio,normalization coefficient(NC)and the bit error rate(BER)are used to evaluate the robustness of the algorithm.According to the experimental results,most of the NC values are around 0.9 under various attacks,while the BER values are very close to 0.These experimental results show that the proposed algorithm is more robust than the existing zero-watermarking methods,which indicates it is more suitable for medical image privacy and security protection. | Shixin Tu Yuanyuan Jia Jinglong Du Baoru Han | 2023 | Computer Modeling in Engineering & Sciences2023，，7： | 0 |
| 9 | Brain-targeted polymersome codelivery of siRNA and temozolomide for effective glioblastoma chemo-RNAi synergistic therapy显示文摘Temozolomide (TMZ) is a clinically approved drug for glioblastoma (GBM) therapy. However, as a result of methylguanine-DNA-methyltransferase (MGMT), which is able to repair damaged DNA-damage repairing, TMZ usually yields unsatisfactory therapeutic effects. Small interfering RNA (siRNA) is a potential alteration tool for sensitivity of TMZ by targeting DNA repair enzymes. However, a suitable TMZ and siRNA codelivery system that can effectively and actively co-deliver siRNA/TMZ into the brain tumor is lacking. In this study, we constructed an angiopep-2 decorated polymersomal delivery system to co-deliver TMZ/siRNA for synergistic GBM therapy. This targeted polymersomal nanomedicine not only enhanced the circulation time of siRNA/TMZ in blood but also improved their blood-brain barrier (BBB) crossing and GBM targeting ability. Moreover, when we co-administered siRNAs specific to retinoblastoma binding protein 4 (RBBP4) together with TMZ in GBM cells, these RBBP4- specific siRNA (siRBBP4) modulated the sensitivity of TMZ by regulating MGMT, and thus showed a powerful synergistic anti-tumor effect. We demonstrated that angiopep-2 decorated polymersomal siRBBP4/TMZ co-loaded nanomedicines are capable of inhibiting tumor growth and significantly improved life expectancy of orthotropic GBM bearing mice. Overall, our study suggests that such a polymersomal TMZ/siRNA codelivery system provides a robust and potent nanoplatform for targeted GBM chemo-RNAi therapy. | Meng Zheng Chengnan Yan Qingshan Yang Feiyan Zhu Qiuli Du Xue Xia Marco Morsch Albert Lee Jinglong Yin Yan Zou Bingyang Shi | 2022 | ChemPhysMater2022，1，3： | 0 |
| 10 | 3-78 Recruitment Kinetic of DNA Repair Protein XRCC1显示文摘Ion microbeam has become a powerful tool to investigate intracellular responses to ion irradiation. In order tostudy the dynamics of protein recruitment to DNA lesions[1??3], we set up a live cell imaging (LCI) system whichallows us to online study the fast recruitment dynamic of single stranded break (SSB) and double stranded break(DSB) proteins at the IMP heavy ion microbeam facility. | Guo Na Du Guanghua Liu Wenjing Guo Jinglong Wu Ruqun Chen Hao | 2014 | IMP & HIRFL Annual Report2014，，1： | 0 |
| 11 | Non-fullerene acceptor fibrils enable efficient ternary organic solar cells with 16.6% efficiency显示文摘Optimizing the components and morphology within the photoactive layer of organic solar cells(OSCs)can significantly enhance their power conversion efficiency(PCE).A new A-D-A type non-fullerene acceptor IDMIC-4F is designed and synthesized in this work,and is employed as the third component to prepare high performance ternary solar cells.IDMIC-4F can form fibrils after solution casting,and the presence of this fibrillar structure in the PBDB-T-2F:BTP-4F host confines the growth of donors and acceptors into fine domains,as well as acting as transport channels to enhance electron mobility.Single junction ternary devices incorporating 10 wt%IDMIC-4F exhibit enhanced light absorption and balanced carrier mobility,and achieve a maximum PCE of 16.6%compared to 15.7%for the binary device,which is a remarkable efficiency for OSCs reported in literature.This non-fullerene acceptor fibril network strategy is a promising method to improve the photovoltaic performance of ternary OSCs. | Donghui Li Xiaolong Chen Jinglong Cai Wei Li Mengxue Chen Yuchao Mao Baocai Du Joel A.Smith Rachel C.Kilbride Mary E.O'Kane Xue Zhang Yuan Zhuang Pang Wang Hui Wang Dan Liu Richard A.L.Jones David G.Lidzey Tao Wang | 2020 | Science China Chemistry2020，63，10： | 0 |
| 12 | Deformation micro-twinning arising at high temperatures in a Ni-Co-based superalloy显示文摘Deformation twinning is an important deformation mechanism in nickel-based superalloys. For superalloys, deformation twins are generally observed at low or intermediate temperatures and high strain rates;however, the appearance of microtwins(MTs) at high temperatures has rarely been reported. In this study, transmission electron microscopy(TEM) was used to study MT formation in Ni-Co-based superalloys following compression at 1120 °C/1 s. The deformation behavior was discussed in detail to reveal the mechanism of MT formation. The twinning mechanism at elevated temperatures was theoretically attributed to the low stacking fault energy(SFE) and poor dislocation-driven deformations caused by the high strain rate in specific directions. | Zijian Zhou Rui Zhang Chuanyong Cui Yizhou Zhou Xiaofeng Sun Jinglong Qu Yu Gu Jinhui Du Yi Tan | 2022 | Journal of Materials Science & Technology2022，，20： | 0 |
| 13 | Effect of Ti-Hf-Zr-Cu-Ni high entropy alloy addition on laser beam welded joint of Ti2AlNb based intermetallic alloy显示文摘TiAlNb based intermetallic alloys,a potential competitor for next-generation super alloys,are susceptible to high-temperature embrittlement due to nucleation of a metastable single B2 phase in the fusion zone(FZ)during laser beam welding(LBW).In this study,a high entropy alloy(HEA),Ti-Hf-Zr-Cu-Ni,was self-developed and introduced as an interlayer into laser beam welded joint(LBWJ)of Ti-22 Al-27 Nb to analyze its impact on the evolution of microstructure in the weld zone(WZ)and subsequently on joint performance.Microstructural examination was carried out through electron probe micro analysis(EPMA),electron backscattered diffraction(EBSD)analysis,high-resolution scanning transmission electron microscopy(HRSTEM)comprising bright field(BF),selective area electron diffraction(SAED)and high angle annular dark-field(HAADF)imaging.Addition of the HEA into FZ of LBWJ triggered heterogenous nucleation during solidification,resultantly,fine-grained B2 with a greater proportion of high angle grain boundaries(HAGBs)was developed.FZ of Ti-22 Al-27 Nb LBWJ,prepared with an interlayer of HEA,was composed of planar,cellular,columnar and equiaxed dendritic grains;a solidification mode which was different from that observed in LBWJ prepared without adulteration of the HEA.The impact of heterogenous nucleation during epitaxial solidification on mechanical properties was established through micro vickers hardness mapping and tensile test,conducted at room temperature.The average hardness,343.5 HV,in the FZ of LBWJ prepared with an interlayer of HEA,was compatible with that of base material(BM),345 HV.The ultimate tensile strength(UTS),1062 MPa,and percentage elongation,11.2%,of the HEA tempered LBWJ were found in close approximation with that of BM,1060 MPa and 13.4%,respectively.A ductile mode of failure was observed during tensile test of the Ti-Hf-Zr-Cu-Ni supplemented LBWJ of Ti-22 Al-27 Nb,while quasi-cleavage mode of fracture was apparent in the joint of Ti-22 Al-27 Nb welded without addition of the HEA. | Mirza Zahid Hussain Jiangtao Xiong Jinglong Li Farah Siddique Lin Jie Zhang Yajie Du Xian Rong Zhou | 2022 | Journal of Materials Science & Technology2022，，25： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员