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| 1 | Study on the imaging ability of the 2D neutron detector based on MWPC显示文摘A 2D neutron detector based on 3 He convertor and MWPC with an active area of 200 mm×200 mm has been successfully designed and fabricated.The detector has been tested with Am/Be neutron source and with collimated neutron beam with the wavelength of =1.37.The best spatial resolution of 1.18 mm(FWHM) and good linearity were obtained.This is in good agreement with theoretical calculations. | TIAN LiChao CHEN YuanBo TANG Bin ZHOU JianRong QI HuiRong LIU RongGuang ZHANG Jian YANG GuiAn XU Hong CHEN DongFeng SUN ZhiJia | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，10： | 3 |
| 2 | Biosorption of citric acid-cadmium complex by imprinted Chitosan polymer 显示文摘 | LIANG Peng WANG Dongfeng QI Hongtao | 2013 | Desalin Water Treat2013，51，1921： | 1 |
| 3 | Pancreatic stent insertion: consequences of failure and results of a modified technique to maximize success显示文摘 | Martin L Freeman Carol Overby Dongfeng Qi | 2004 | Gastrointestinal Endoscopy2004，，1： | 1 |
| 4 | Foundry technology and its applications of ductile iron castings produced by water-cooled copper alloy Mold显示文摘The high efficiency mechanized foundry technology of castings produced by using water-cooled copper alloy permanent mold has been systematically studied. Through the researching a Cu-Cr-Mg alloy with high conductivity and good combined mechanical properties used for making permanent mold was developed, and the basic design principles of the water-cooled permanent mold along with the control-range of relevant foundry processing parameters were also established. A cast production line equipped with water-cooled copper alloy mold was designed and fabricated for production of ductile iron automobile gear castings, This production line can consistently make automobile gear castJngs Jn QT500-15 and QT600-5 (Chinese Standard) grades of ductile iron with up to 95% casting success rate. | ~*X. B. Qi~1, J. Tang~1, Z.A. Liu~1, D.X. Piao~1, F.Q. Yin~2, S.C. Yang~2 (1. Shenyang Research Institute of Foundry, Shenyang 110022, Liaoning, P. R. China 2. Dongfeng Chaoyang Diesel Engine Co. Ltd, Chaoyang 112000, Liaoning, P. R. China) | 2004 | China Foundry2004，1，S1： | 1 |
| 5 | Disruption of Klf4 in Villin-Positive Gastric Progenitor Cells Promotes Formation and Progression of Tumors of the Antrum in Mice显示文摘 | Qiang Li Zhiliang Jia Li Wang Xiangyu Kong Qi Li Kun Guo Dongfeng Tan Xiangdong Le Daoyan Wei Suyun Huang Lopa Mishra Keping Xie | 2012 | Gastroenterology2012，，3： | 1 |
| 6 | Common Variants in Epithelial Sodium Channel Genes Contribute to Salt Sensitivity of Blood Pressure: The GenSalt Study显示文摘 | Qi Zhao Dongfeng Gu James E. Hixson De-Pei Liu Dabeeru C. Rao Cashell E. Jaquish Tanika N. Kelly Fanghong Lu Jixiang Ma Jianjun Mu Lawrence C. Shimmin Jichun Chen Hao Mei L. Lee Hamm Jiang He | 2011 | Circulation: Cardiovascular Genetics2011，，4： | 1 |
| 7 | Correlation between blood pressure responses to dietary sodium and potassium intervention in a Chinese popuIation显示文摘 | Zhao Qi Gu Dongfeng Chen Jing | 2009 | A- merican Journal of Hypertension2009，176，22： | 1 |
| 8 | Pancreatic stent insertion: consequences of failure and results of a modified technique to maximize success显示文摘 | Martin L Freeman Carol Overby Dongfeng Qi | 2004 | Gastrointestinal Endoscopy2004，，1： | 1 |
| 9 | Genetic variants in the renin–angiotensin–aldosterone system and blood pressure responses to potassium intake显示文摘 | Jiang He Dongfeng Gu Tanika N. Kelly James E. Hixson Dabeeru C. Rao Cashell E. Jaquish Jing Chen Qi Zhao Chi Gu Jianfeng Huang Lawrence C. Shimmin Ji-Chun Chen Jianjun Mu Xu Ji De-Pei Liu Paul K. Whelton | 2011 | Journal of Hypertension2011，，9： | 1 |
| 10 | A Novel Criterion for Optimum Multilevel Coding Systems in Mobile Fading Channels显示文摘 | Dongfeng Yuan Cheng-Xiang Wang Qi Yao Zhi-Gang Cao | | 0，，： | 1 |
| 11 | In-situ analysis of laser-induced breakdown spectra for online monitoring of femtosecond laser machining of sapphire显示文摘Laser-induced breakdown spectroscopy(LIBS)is widely used for elemental analysis.However,its application for monitoring and analyzing a laser machining process by examining the changes in spectral information warrants further investigation.In this study,we investigate the effect of laser parameters on the spectra,variations in the time-resolved plasma emission spectra,and the relationship between the morphology of craters and plasma plume evolution during the femtosecond(fs)laser ablation of sapphire.The Boltzmann plot method and Stark’s broadening model are employed to estimate the temporal temperature and electron density of the plasma plume,revealing the process of plasma evolution.This study aims to demonstrate the feasibility of LIBS for online monitoring of laser processing through experimental data and theoretical explanations. | SHANGGUAN ShiYong ZHANG JianGuo LI ZhanZhu SHI Wei WANG WenKe QI DongFeng ZHENG HongYu | 2024 | Science China(Technological Sciences)2024，67，1： | 0 |
| 12 | Unveiling the spatial distribution and molecular mechanisms of terpenoid biosynthesis in Salvia miltiorrhiza and S. grandifolia using multi-omicsand DESI-MSI显示文摘Salvia miltiorrhiza and S.grandifolia are rich in diterpenoids and have therapeutic effects on cardiovascular diseases.In this study,the spatial distribution of diterpenoids in both species was analyzed by a combination of metabolomics and mass spectrometry imaging techniques.The results indicated that diterpenoids in S.miltiorrhiza were mainly abietane-type norditerpenoid quinones with a furan or dihydrofuran D-ring and were mainly distributed in the periderm of the roots,e.g.cryptotanshinone and tanshinone IIA.The compounds in S.grandifolia were mainly phenolic abietane-type tricyclic diterpenoids with six-or seven-membered C-rings,and were widely distributed in the periderm,phloem,and xylem of the roots,e.g.11-hydroxy-sugiol,11,20-dihydroxy-sugiol,and 11,20-dihydroxy-ferruginol.In addition,the leaves of S.grandifolia were rich in tanshinone biosynthesis precursors,such as 11-hydroxy-sugiol,while those of S.miltiorrhiza were rich in phenolic acids.Genes in the upstream pathway of tanshinone biosynthesis were highly expressed in the root of S.grandifolia,and genes in the downstream pathway were highly expressed in the root of S.miltiorrhiza.Here,we describe the specific tissue distributions and mechanisms of diterpenoids in two Salvia species,which will facilitate further investigations of the biosynthesis of diterpenoids in plant synthetic biology. | Jie Xia Ganggui Lou Lan Zhang Yanbo Huang Jian Yang Juan Guo Zhechen Qi Zhenhao Li Guoliang Zhang Shengchun Xu Xijiao Song Xiaodan Zhang Yukun Wei Zongsuo Liang Dongfeng Yang | 2023 | Horticulture Research2023，10，7： | 0 |
| 13 | Intrusion Simulation of a C60 Ball into Sliding Contact Space with Graphene Layered Surfaces显示文摘The intrusion process of a C60 molecular ball into a sliding contact space with garaphene layered surfaces was simulated using the Molecular Dynamic approach.The contact space was made up by two silicon substrates with graphene layered on the surface of the upper substrate forming an included angle which was defined as initial entry angle changing from 20°to 90°.Then a linear velocity of 30/ps was applied to the lower substrate along horizontal direction.The simulation was carried out using Tesoff potential of C and Si atoms at room temperature 300K.The simulation results showed that when the intrusion angle exceeded a critical angle of 80°,the C60 ball could not intrude the contact space,and the number of the sticking atoms sharply increased.Also,the dependence of maximum pull-off force acting on the upper substrate on the initial entry angle during the C60 intrusion process was calculated in which the critical force for C60 intrusion is found.All the results showed that the upper silicon substrate was well protected by the mono graphene layer. | Qi, Zhang Diao Dongfeng Pei, Li | 2012 | 稀有金属材料与工程2012，41，S1： | 0 |
| 14 | Bandgap tunable preparation of GaS nanosheets and their application in photoelectrochemical photodetectors显示文摘Bandgap engineering of two-dimensional(2D)materials is essential for the design of photoelectrochemical(PEC)devices.Gallium(II)sulfide(GaS),a layered semiconductor material with a direct bandgap of approximately 3.05 eV,has recently gained extensive attention owing to its unique photoresponse property.However,its bandgap tunability relative to the number of layers has not been experimentally confirmed;thus,the effect of bandgap on the photoresponse has not been explored yet.Herein,fewlayered GaS nanosheets(Ns)are prepared using a simple liquid-phase exfoliation(LPE)approach.After centrifuging at different speeds,GaS Ns with defined layers are obtained,which enable verification of the tunable bandgap from 2.02 to 3.15 eV.When applied as a PEC-type photodetector,the responsivity of the photodetector is 4.77 mA W^(−1)and 33.7μA W^(−1)under bias voltages of 0.6 and 0 V,respectively.Theoretical models of the electronic structure suggest that a reduction in the number of layers,leading to a decrease of the effective mass at the valence band maximum(VBM),can enhance the carrier mobility of GaS Ns.This results in high photocurrents and indicates that 2D GaS Ns are ideal materials for future high-performance optoelectronic systems. | YOU Qi ZHU JiaQi PENG Chao ZHANG YanHui RUAN BanXian DAI XiaoYu WANG Xin WONG Wai-Yeung XUE DongFeng XIANG YuanJiang | 2022 | Science China(Technological Sciences)2022，65，10： | 0 |
| 15 | Tip-induced directional charge separation on one-dimensional BiVO4 nanocones for asymmetric light absorption显示文摘One dimensional(1D)semiconductor is a class of extensively attractive materials for many emerging solar energy conversion technologies.However,it is still of shortage to assess the impact of 1D structural symmetry on spatial charge separation and understand its underlying mechanism.Here we take controllably-synthesized 1D BiVO_(4)nanocones and nanorods as prototypes to study the influence of 1D symmetry on charge separation.It is found that the asymmetric BiVO_(4)nanocones enable more effective charge separation compared with the symmetric nanorods.The unexpected spatial charge separation on the nanocones is mainly ascribed to uneven light absorption induced diffusion-controllable charge separation due to symmetry breaking of 1D nanostructure,as evidenced by spatial and temporal resolved spectroscopy.Moreover,the promotion effect of charge separation on the nanocones was quantitatively evaluated to be over 20 times higher than that in BiVO_(4)nanorods.This work gives the first demonstration of the influence of 1D structural symmetry on the charge separation behavior,providing new insights to design and fabricate semiconductor materials for efficient solar energy conversion. | Nengcong Yang Ruotian Chen Chenwei Ni Dongfeng Li Qi Sun Lifang Liu Yu Qi Shengye Jin Xiuli Wang Fengtao Fan Can Li Fuxiang Zhang | 2022 | Journal of Energy Chemistry2022，31，9： | 0 |
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