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| 1 | An elastic-plastic contact model for line contact structures显示文摘Although numerical simulation tools are now very powerful,the development of analytical models is very important for the prediction of the mechanical behaviour of line contact structures for deeply understanding contact problems and engineering applications.For the line contact structures widely used in the engineering field,few analytical models are available for predicting the mechanical behaviour when the structures deform plastically,as the classic Hertz’s theory would be invalid.Thus,the present study proposed an elastic-plastic model for line contact structures based on the understanding of the yield mechanism.A mathematical expression describing the global relationship between load history and contact width evolution of line contact structures was obtained.The proposed model was verified through an actual line contact test and a corresponding numerical simulation.The results confirmed that this model can be used to accurately predict the elastic-plastic mechanical behaviour of a line contact structure. | Haibin Zhu Yingtao Zhao Zhifeng He Ruinan Zhang Shaopeng Ma | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，5： | 8 |
| 2 | Deformation Field around the Stress Induced Crack Area in Sandstone by the Digital Speckle Correlation Method显示文摘在亚裂缝附近的变丑地用数字点缀关联方法被计算。首先,单轴的压缩在包含预制破裂的样品被做的沙岩上测试。显示出亚裂缝发展的特征的显微镜照相的照片用一台扫描电子显微镜(SEM ) 被拿。从亚裂缝的这些显微镜照相的照片,显示出开始的即时图象,生长和结合并且在沙岩标本微裂缝被获得,在裂缝的开发装载水平以及谷物边界的效果被分析。第二,沙岩标本表面的紧张图象从相应于不同装载层次的 SEM 的观察被捕获。然后,关联计算被执行让紧张图象的顺序的对评估排水量部件,以及紧张地。结果证明变丑在亚裂缝在岩石损坏过程期间分开的不同区域变化。 | ZHAO Yonghong MA Shaopeng | 2009 | Acta Geologica Sinica(English Edition)2009，83，3： | 3 |
| 3 | Influence of Cr^(3+) Concentration on SO_2 Removal over TiO_2 Based Multi-walled Carbon Nanotubes显示文摘In this study, titanium dioxide supported by multi-walled carbon nano tubes(MWCNTs/TiO_2) and Cr-doped TiO_2 supported by MWCNTs(MWNTs/Cr-TiO_2) were synthesized by the sol-gel method. The prepared samples were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, the BrunauerEmmett-Teller analysis, and the Raman spectroscopy. The oxidation and efficiency for removal of SO_2 in a simulated flue gas were investigated experimentally in a fixed-bed reactor. The 15% MWCNTs/Cr-Ti02 sample displayed excellent adsorption properties, and a SO_2 removal rate equating to 30.415 1 mg/g from the simulated flue gas containing 2 300 μg/g of SO_2, 8% of 02, and 5% of H20 was achieved under optimal conditions covering a temperature of 333.15 K, and a space velocity of 1 275 h^(-1). The adsorption process was enhanced because Cr doping modified the pore structure and inhibited the grain growth of TiO_2. In addition, the Freundlich and Langmuir models revealed that SO_2 was mainly adsorbed through chemical adsorption on the sample surfaces, and the thermodynamic model analysis indicated that the adsorption was a spontaneous, exothermic, and entropy-reducing process. The adsorption kinetics of SO_2 can be described by the pseudosecond-order kinetic and the Bangham dynamics models. The possible reaction mechanism involved in desulfurization process was also proposed. | Yang Yanchun Jia Fengrui Jian Weiwei Zhang Shaopeng Ma Danzhu Liu Guangxin | 2019 | China Petroleum Processing & Petrochemical Technology2019，21，1： | 2 |
| 4 | 2 K superfluid helium cryogenic vertical test system for superconducting cavity of ADS Injector I显示文摘Purpose The accelerator-driven subcritical system(ADS)is the internationally recognized key technology of nuclear waste problem treatment,of which superconducting proton linac is an important part.With the support of the strategic science and technology pilot project of the Chinese Academy of Sciences,the Institute of High Energy Physics of the Chinese Academy of Sciences took the lead in the research of 325 MHz superconducting proton linac,which is called ADS Injector I.The superconducting accelerator part of ADS Injector I mainly consists of 14 spoke-type superconducting cavities withβ0.12.At the same time,the research work of various cavities with differentβvalues and different frequencies is also carried out to lay the technical and technological foundation for ADS main accelerator.The only way to determine whether the superconducting cavity can reach the design target and whether it can be installed into the cryostat is the vertical test at cryogenic.As the only way to test the microwave performance of the superconducting cavity at low temperature,the vertical test can accurately test the acceleration gradient Eacc and the corresponding quality factor Q0 of the superconducting cavity.The design and construction of the superconducting cavity vertical test facility is based on the practical needs of the pilot project and the long-term development of the superconducting accelerator.Methods This paper mainly introduces the design and construction of the cryogenic vertical test system for the superconducting cavity of ADS Injector I,including the system scheme design,process design,heat load analysis,2 K superfluid helium obtaining method,system commissioning and operation,etc.Results and Conclusion The static heat leakage at 2 K of the 2 K superfluid helium vertical test system of ADS Injector I is 1.624W,which has reached the international advanced level.The 2 K superfluid helium vertical test system of ADS Injector I after constructed not only meets the test requirements of ADS pilot project,but also conducts 4 K and 2 K vertical tests for other different types of superconducting cavities and relevant cryogenic experiments. | Rui Ge Liangrui Sun Miaofu Xu Rui Ye Xiangzhen Zhang Minjing Sang Ruixiong Han Zhuo Zhang Jiehao Zhang Lin Bian Mei Li Changcheng Ma Tongxian Zhao Yongcheng Jiang Zhengze Chang Shaopeng Li | 2020 | Radiation Detection Technology and Methods2020，4，2： | 2 |
| 5 | A simple approach to multiview face hallucination 显示文摘 | MA Xiang HUANG Hua WANG Shaopeng | 2010 | IEEE Signal Processing Letters2010，17，6： | 1 |
| 6 | Application of an improved subpixel registration algorithm on digital speckle correlation measurement显示文摘 | ZHANG Jun JIN Guanchang MA Shaopeng | 2003 | Optics and Laser Technology2003，35，7： | 1 |
| 7 | Luminescence temperature and pressure studies of Zn 2 SiO 4 phosphors doped with Mn 2+ and Eu 3+ ions显示文摘 | Fuhai Su Baoshan Ma Kun Ding Guohua Li Shaopeng Wang Wei Chen Alan G. Joly David E. McCready | 2005 | Journal of Luminescence2005，，1： | 1 |
| 8 | Observation of damage evolution in polymer bonded explosives using acoustic emission and digital image correlation显示文摘 | Xian Wang Shaopeng Ma Yingtao Zhao Zhongbin Zhou Pengwan Chen | 2011 | Polymer Testing2011，，8： | 1 |
| 9 | A simple element-splitting model to simulate the tensile fracture of brittle materials and its experimental verification 显示文摘 | Wang laigui Zhao Na Ma Shaopeng | 2009 | Computational Materials Science2009，46，3： | 1 |
| 10 | Application of an improved subpixel registration algorithm on digital speckle correlation measurement 显示文摘 | Jun Zhang Guanchang Jin Shaopeng Ma | 2003 | Optics & Laser Technology2003，35，： | 1 |
| 11 | Analysis of localization in rock materials through DSCM proceedings 显示文摘 | Jin Guanchang Ma Shaopeng Pan Yishan | 2002 | SPIE2002，4537，： | 1 |
| 12 | A simple element-splitting model to simulate the tensile fracture of brittle materials and experimental verification显示文摘 | Wang Laigui Zhao Na Ma Shaopeng | 2009 | Computational Materials Science2009，46，： | 1 |
| 13 | Status of the IHEP 1.3 GHz superconducting RF program显示文摘The 1.3 GHz superconducting radio-frequency (SRF) technology is one of the key technologies for the ILC and future XFEL and ERL projects in China. With the aim to develop 1.3 GHz SRF technology, IHEP has started a program to build an SRF Accelerating Unit. This unit contains a 9-cell 1.3 GHz superconducting cavity, a short cryomodule, a high power input coupler, a tuner and a low level RF system. This program also includes the SRF laboratory upgrade, which will permit the unit to be built and tested at IHEP. The unit will be used for the 1.3 GHz SRF system integration study, high power horizontal test and possible beam test in the future. In this paper, we report the recent R&D status of this program. The first large grain low-loss shape 9-cell superconducting RF cavity made by IHEP reached 20 MV/m in the first vertical test in July, 2010. The prototype tuner and low level RF (LLRF) system are under test. The high power input coupler and cryomodule are under fabrication. Several key SRF facilities for 9-cell cavity surface treatment and pre-tuning were successfully commissioned and are in operation. | GAO Jie ZHAI JiYuan PAN WeiMing LI ShaoPeng SUN Yi DAI JianPing CHI YunLong LI ZhongQuan ZHAO TongXian HUANG TongMing MA Qiang GE Rui LI ChunHua GUO HaiSheng WANG GuangWei QIU Feng LIN HaiYing HOU Mi WANG QunYao | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S2： | 1 |
| 14 | Characterization and antioxidant activities of degraded polysaccharides from Poria cocos sclerotium显示文摘 | Jin Tang Jing Nie Danping Li Wenjun Zhu Shaopeng Zhang Fang Ma Qiao Sun Jia Song Yonglian Zheng Ping Chen | 2014 | Carbohydrate Polymers2014，，： | 1 |
| 15 | New correlation coefficients designed for digital speckle correlation method (DSCM) 显示文摘 | MA Shaopeng JIN Guanchang | 2003 | Proceedings of SPIE(S0277-786X)2003，5058，： | 1 |
| 16 | Experimental investigation of three-dimensional propagation process from surface fault显示文摘Experimental study of the formation and propagation of three-dimensional (3D) faults is of great sig- nificance in the understanding of the propagation process developing from initial natural faults. In the study described in this paper, experimental investigations of 3D propagation processes of a type of surface fault are carried out under biaxial compression. The strain field near the surface fault is dy- namically measured and fully analyzed with a high-density Multi-Channel Digital Strain Gauge (MCDSG) and Digital Speckle Correlation Method (DSCM) based on the white-light image analysis. Simultane- ously the micro-fracture process involved in fault formation is observed by a 3D acoustic emission (AE) location system with a set of multi-channel whole-wave record equipment. The experimental results show that the 3D propagation process of surface fault differs greatly from that of the two-dimensional (2D) state and that a new more complicated type of 3D morphological characters and deformation mechanisms are produced. The 3D propagation process of surface faults may be divided into three stages: 1) the first stage of crack propagation initiated by wing cracks; 2) the conversion stage propa- gated by petal cracks; and 3) the second stage of crack propagation formed by shell-shaped fracture surface. The primary propagation patterns of the three stages are different. The corresponding defor- mation fields and micro-fracture distributions are likewise different. The fracture activities from petal cracks especially are of vital importance during surface fault propagation. This is also a key conversion state and marks an intrinsic difference between 2D-like and the 3D state in fault development. | LIU LiQiang LIU PeiXun WONG HonChu MA ShaoPeng GUO YanShuang | 2008 | Science China Earth Sciences2008，51，10： | 1 |
| 17 | Thermometry strategy developed based on fluorescence contrast driven by varying excitations in codoped LiNbO3显示文摘We propose what we believe is a novel optical thermometry strategy(FIR-Ex)based on the fluorescence intensity ratio(FIR)between two radiations associated with the same emission peak but different excitation wavelengths,in contrast to the traditional approach(FIR-Em),which depends on the FIR at varying emission wavelengths.The temperature-dependent FIR within the FIR-Ex strategy arises from the different charge/energy evolution routes,rather than the distribution of thermally coupled levels within the FIR-Em strategy.Considerable diversity in thermal behaviors and luminescence mechanisms was demonstrated by analyzing the 618 nm red emission in Pr^3+-doped congruent LiNbO3(Pr:CLN)under 360 and 463 nm excitations.The temperature sensitivity was further improved via Mg^2+ codoping due to the optimization of charge dynamics and energy transfer processes.Given its wide detection scope,relatively high absolute sensitivity at low temperature,and high tunability of temperature sensitivity,the FIR-Ex strategy is promising for developing optical temperature-sensing materials with high performance. | SIWEI LONG SHAOPENG LIN DECAI MA YUNZHONG ZHU HUASHAN LI BIAO WANG | 2020 | Photonics Research2020，8，2： | 1 |
| 18 | Crystal-phase engineering of PdCu nanoalloys facilitates selective hydrodeoxygenation at room temperature显示文摘Selective hydrodeoxygenation of biomass-derived aromatic alcohols to value-added chemical or fuel is of great importance for sustainable biomass upgrading,and hydrodeoxygenation of 5-hydroxymethylfurfural(HMF)to 2,5-dimethylfuran(DMF)is one of the most attractive reactions.Achieving the conversion of HMF to DMF using H_(2)at ambient temperature is challenging.In this work,we used PdCu nanoalloys to catalyze the selective hydrodeoxygenation reaction of HMF to DMF using H_(2)as the reducing agent.The reaction path and the product selectivity are governed by the crystallographic phase of the PdCu nanoalloys.It was discovered that body-centered cubic(BCC)PdCu nanoalloys supported on activated carbon(AC)exhibited outstanding performance with 93.6%yield of DMF at room temperature(PdCu/AC-BCC).A combination of experimental and density functional theory(DFT)studies showed that the tilted adsorption modes of furanic intermediates on PdCu-BCC nanoalloy surfaces accounted for the high selectivity of DMF;however,furan ring was activated on PdCu face-centered cubic(FCC)nanoalloy surfaces.Furthermore,PdCu/AC-BCC could also catalyze the hydrodeoxygenation of other aromatic alcohols at room temperature while maintaining the aromatic structures.This work opens the way for selective hydrodeoxygenation of the aromatic alcohols at room temperature with the aromatic ring intact. | Shaopeng Li Minghua Dong Mi Peng Qingqing Mei Yanyan Wang Junjuan Yang Youdi Yang Bingfeng Chen Shulin Liu Dequan Xiao Huizhen Liu Ding Ma Buxing Han | 2022 | The Innovation2022，3，1： | 0 |
| 19 | R&D of BEPCII 500 MHz superconducting cavity显示文摘Beijing Electron-Positron Collider Upgrade (BEPCII) adopts two 500 MHz superconducting cavities (SCCs) in each ring for higher accelerated gradient, higher Q and lower impedance (Wang et al. The proceedings of SRF'07). There's no spare cavity due to the limited time and funding during BEPCII construction. If any serious trouble happened on either one of the two cavities and could not be recovered in a short time, the operation of BEPCII facility will be affected. Therefore, since 2009 three spare cavities have been fabricated in China to ensure reliable operation, and two of them have been successfully vertically tested in January and July 2011. This paper will briefly present the manufacture, post-process and vertical test performance of the 500 MHz spare cavities. | LIU YaPing WANG GuangWei PAN WeiMin LI JiZhen LIU DeGui SUN Yi LI ZhongQuan DAI JianPing LI ShaoPeng HE Kun WANG GuoPing ZHAO GuangYuan MA Qiang LIN HaiYing SHA Peng WANG QunYao QIU Feng MENG FanBo LI Han | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S2： | 0 |
| 20 | Standardized Cultivation Technology of Maize Jinhai 5显示文摘It is very important to adopt standardized production technology in the process of maize cultivation,which is conducive to giving full play to the high-yield,high-quality and multi-resistant characteristics of Jinhai 5.This paper standardized the cultivation technology of Jinhai 5 from the aspects of maize seed quality,fertilization before sowing,sowing,seedling management,mid-period management,later management,disease and pest control,and harvesting,so as to provide reference for the standardized production of maize Jinhai 5. | Lizhi YU Xiufeng DENG Shaopeng LIU Dongwei WANG Yunfei MA | 2020 | Agricultural Biotechnology2020，9，6： | 0 |
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