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| 1 | Numerical analysis of dynamic response of vehicle–bridge coupled system on long-span continuous girder bridge显示文摘To systematically study the vehicle–bridge coupled dynamic response and its change rule with different parameters, a vehicle model with seven degrees of freedom was built and the total potential energy of vehicle space vibration system was deduced. Considering the stimulation of road roughness, the dynamic response equation of vehicle–bridge coupled system was established in accordance with the elastic system principle of total potential energy with stationary value and the ‘‘set-in-right-position'' rule. On the basis of the self-compiled Fortran program and bridge engineering, the dynamic response of longspan continuous girder bridge under vehicle load was studied. This study also included the calculation of vehicle impact coefficient, evaluation of vibration comfort, and analysis of dynamic response parameters.Results show the impact coefficient changes with lane number and is larger than the value calculated by the ‘‘general code for design of highway bridges and culverts(China)''. The Dieckmann index of bridge vibration is also related to lane number, and the vibration comfort evaluation is good in normal conditions.The relevant conclusions from parametric analyses have practical significance to dynamic design and daily operation of long-span continuous girder bridges in expressways. Safety and comfort are expected to improve significantly with further control of the vibration of vehicle–bridge system. | Lipeng An Dejian Li Peng Yu Peng Yuan | 2016 | Theoretical & Applied Mechanics Letters2016，6，4： | 4 |
| 2 | Comprehensive test stand for high-intensity cyclotron development显示文摘A comprehensive test stand for high-intensity cyclotron development,a 10 MeV 430 μA cyclotron,has been successfully constructed at China Institute of Atomic Energy (CIAE) for the experimental verification of the viability of a 100 MeV high-intensity cyclotron (CYCIAE-100) being constructed at CIAE.The verification includes the overall design technology,detail design and engineering technology for the crucial parts of the machine,e.g.main magnet and beam diagnostics.It will also pave the way for future enhancement of the beam intensity.The test stand consists of a H-ion source,axial injection system,central region,main magnet and coil,RF resonator,stripping extraction,and auxiliary systems,which include the RF power amplifier,high voltage and DC power supplies,electric apparatus,beam diagnostics,control,vacuum,water cooling,pneumatic system,and safety interlock.This paper presents the work regarding the design and sub-system development of the test sand,and the results of the beam commissioning of the machine. | ZHANG TianJue LI ZhenGuo CHU ChengJie XING JianSheng GUAN FengPing ZHONG JunQing JI Bin GE Tao YIN ZhiGuo HOU ShiGang PAN GaoFeng YAO HongJuan LU YinLong WANG ZhenHui WU LongCheng LIN Jun JIA XianLu WEI SuMin WEN LiPeng WANG Feng XIA Le CAI HongRu XIE HuaiDong CHEN RongFan ZHANG Yan ZHANG SuPing LIU GengShou ZOU Jian AN ShiZhong YANG JianJun BI YuanJie YANG Fang | 2011 | Chinese Science Bulletin2011，56，3： | 3 |
| 3 | Selenium-oxidizing Agrobacterium sp.T3F4 decreases arsenic uptake by Brassica rapa L.under a native polluted soil显示文摘Toxic arsenic(As)and trace element selenium(Se)are transformed by microorganisms but their complex interactions in soil-plant systems have not been fully understood.An Asand Se-oxidizing bacterium,Agrobacterium sp.T3F4,was applied to a native seleniferous As-polluted soil to investigate As/Se uptake by the vegetable Brassica rapa L.and As-Se interaction as mediated by strain T3F4.The Se content in the aboveground plants was significantly enhanced by 34.1%,but the As content was significantly decreased by 20.5% in the T3F4-inoculated pot culture compared to the control(P<0.05).Similar result was shown in treatment with additional 5 mg/kg of Se(IV)in soil.In addition,the As contents in roots were significantly decreased by more than 35% under T3F4 or Se(IV)treatments(P<0.05).Analysis of As-Se-bacterium interaction in a soil simulation experiment showed that the bioavailability of Se significantly increased and As was immobilized with the addition of the T3F4strain(P<0.05).Furthermore,an As/Se co-exposure hydroponic experiment demonstrated that As uptake and accumulation in plants was reduced by increasing Se(IV)concentrations.The 50% growth inhibition concentration(IC50)values for As in plants were increased about one-fold and two-fold under co-exposure with 5 and 10μmol/L Se(IV),respectively.In conclusion,strain T3F4 improves Se uptake but decreases As uptake by plants via oxidation of As and Se,resulting in decrease of soil As bioavailability and As/Se competitive absorption by plants.This provides a potential bioremediation strategy for Se biofortification and As immobilization in As-polluted soil. | Lijin An Chunzhi Zhou Lipeng Zhao Ao Wei Yiting Wang Huimin Cui Shixue Zheng | 2024 | Journal of Environmental Sciences2024，，4： | 0 |
| 4 | Laminin 332-functionalized coating to regulate the behavior of keratinocytes and gingival mesenchymal stem cells to enhance implant soft tissue sealing显示文摘Peri-implant epithelial sealing is the first line of defense against external pathogens or stimuli;hence,an essential process to prevent peri-implantitis.Laminin 332(LN332)is the main component of the internal basal lamina and participates in peri-implant epithelial sealing by forming hemidesmosomes(HDs)with integrinα6β4.In thiswork,poly(D,L-lactide)(PDLLA)-LN332 composite coating was successfully constructed by a method similar to layer-by-layer assembly,displaying staged LN332 release for as long as 28days.The PDLLA-LN332 composite coating can activate the intracellular PI3K-Akt pathway via binding to cellular integrinα6β4,which can promote adhesion,migration and proliferation of HaCaT cells and further enhance the expression of keratinocyte HD-related molecules,including integrinα6β4,LN332 and plectin.Furthermore,the PDLLA-LN332 composite coating can promote the adhesion,spreading and proliferation of gingival mesenchymal stem cells and accelerate their epithelial differentiation.Therefore,the PDLLA-LN332 composite coating can enhance implant soft tissue sealing,warranting further in vivo study. | Lipeng Liu Jing Wang Ying Li Bing Liu Wei Zhang Weikang An Qing Wang Boya Xu Lingzhou Zhao Chufan Ma | 2022 | Regenerative Biomaterials2022，9，1： | 0 |
| 5 | Extracted Proton Energy Measurement for CYCIAE-100显示文摘Since the first beam was got in 2014,the100 MeV compact cyclotron(CYCIAE-100)has been into the operation process.75-100 MeV proton beams were extracted by the stripping extraction mode.The extracted proton energy for CYCIAE-100 was finished measurement by the experts in last year.The Bragg peak position in the water is fixed for the extracted proton | AN Shizhong WANG Feng WANG Lei LYU Yinlong GE Tao WEN Lipeng WEI Sumin CAO Lei HUANG Peng Operation Team | 2017 | Annual Report of China Institute of Atomic Energy2017，，1： | 0 |
| 6 | Testing of Extracting Proton Beams Simultaneously in Dual Direction for CYCIAE-100显示文摘The 100 MeV compact cyclotron(CYCIAE-100)has been into the operation process.75-100 MeV proton beams with the beam current of200μA are extracted by the stripping extraction mode.Two sets of stripping extraction systems are installed in opposite direction of north | AN Shizhong LYU Yinlong WEN Lipeng CAO Lei LU Xiaotong GE Tao WEI Sumin HUANG Peng WANG Feng WANG Lei Operation Team | 2017 | Annual Report of China Institute of Atomic Energy2017，，1： | 0 |
| 7 | Test and Appraising for Transfer System of BRIF显示文摘Beam transfer system of BRIF has been finished,and the test and the appraising held by CNNC has been finished at last November.The beam transfer system is an important part of BRIF,in which there are 5beam lines,transports the proton beams from 100MeV compact cyclotron to different targets,such as neutron physics,isotope production,nuclear medi- | WEI Sumin GE Tao AN Shizhong WEN Lipeng LI Ming ZHENG Xia YIN Meng LU Xiaotong CAO Lei | 2017 | Annual Report of China Institute of Atomic Energy2017，，1： | 0 |
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