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35篇 您的检索式:作者名="Yuanjun Li"
    题名 作者 年代 出处 被引量
1Metal-organic frameworks-derived nitrogen-doped carbon supported nanostructured PtNi catalyst for enhanced hydrosilylation of 1-octene显示文摘Here,we successfully developed nano structured PtNi particles supported on n itroge rrdoped carbon(NC),which were obtai ned by carbon izati on of metal-organic frameworks under different temperatures,forming the nano-PtNi/NC-600,nano-PtNi/NC-800,nano-PtNi/NC-900 and nano-PtNi/NC-1000 catalysts.For hydrosilylation of 1-octene,we found that the nano-PtNi/NC-1000 catalyst exhibits higher activity for anti-Markovnikov hydrosilylation of 1-octene than those of nano-PtNi/NC-600,nano-PtNi/NC-800,nano-PtNi/NC-900 catalysts.Experiments have verified that benefiting from obvious charge transfer from nano-PtNi particles to NC support carbonized at 1,000℃,the nano-PtNi/NC-1000 catalyst achieved almost complete conversion and produce exclusive adduct for anti-Markovnikov hydrosilylation of 1-octene.Importantly,the nano-PtNi/NC-1000 catalyst exhibited good reusability for the hydrosilylation reaction.This work provides a new path to optimize electronic structure of catalysts by support modification to enhance electron transfer between metal active species and supports for highly catalytic performance.Junfeng Wen Yuanjun Chen Shufang Ji Jian Zhang Dingsheng Wang and Yadong Li 2019Nano Research2019,12,10:6
2A Study of the Crustal Stability in the Yangtze Three Gorges Area显示文摘The Three Gorges Dam on the Yangtze River is situated on the intact rock mass composed of diorite granite at the southern termination of the Huangling block which, as a sub plate with a double layer structure (crystalline basement and sedimentary cover) in the Chinese inland, keeps a constant but slow uplift as a whole since its formation in the Indoncisia movement. Tectonic deformation within the block is not significant, with the exception of a slight southeastward tilt. The block is confined by many active structures, of which the sub longitudinal Yuanan and Xiannvshan ( Mount Fairy ) deep fault zones are the main strongly seismogenic zones. The Yuan’an fault zone represents a regional boundary among West Henan, West Hubei and West Hunan mountainous regions as well as the Nanyang, Jianghan and Dongting Lake basins, with a total length of more than 1,000 km. Two M 6 5 earthquakes (in Changde and Nanyang) occurred in the fault zone in historic time and the distance between the two epicenters is about 500 km. The Mount Fairy fault zone extends northward along the Xiangxi River and ends at the Qingfeng fault. It runs a total length of more than 220 km. southward across Yuyang Pass and then its trace is unknown. The fault zone has a tectonic condition for occurrences of M 6.0 earthquakes. The possible seismic risk for the dam may come from these two strong seismogenic zones. Thus the seismic intensity to influence the dam is estimated to be Ⅵ~Ⅶ and the horizontal peak acceleration to be 0 1~0 15 g.Li Ping 1, Li Yuanjun 2 (1 Institute of Geology, China Seismological Bureau, Beijing 100029) (2 College of Civil Construction Engineering, Wuhan University, Wuhan 430072) 2003工程科学(英文版)2003,1,1:4
3Effect of size and crystalline phase of TiO2 nanotubes on cell behaviors: A high throughput study using gradient TiO2 nanotubes显示文摘The research of TiO2 nanotubes(TNTs)in the field of biomedicine has been increasingly active.However,given the diversity of the nanoscale dimension and controversial reports,our understanding of the structure-property relationships of TNTs is not yet complete.In this paper,gradient TNTs with a wide diameter range of 20-350 nm were achieved by bipolar electrochemistry and utilized for a thorough high-throughput study of the effect of nanotube dimension and crystalline phase on protein adsorption and cell behaviors.Results indicated that protein adsorption escalated with nanotube dimension whereas cell proliferation and differentiation are preferred on small diameter(<70 nm)nanotubes.Large diameter anatase nanotubes had higher adsorption of serum proteins than as-prepared ones.But only as-prepared small diameter nanotubes presented slightly higher cell proliferation than corresponding annealed nanotubes whereas there was no discernible difference between as-prepared and annealed nanotubes on cell differentiation for the entire gradient.Those findings replenish previous research about how cell responses to TNTs with a wide diameter range and provide scientific guidance for the optimal design of biomedical materials.Yanran Li Si Wang Yuanjun Dong Ping Mu Yun Yang Xiangyang Liu Changjian Lin Qiaoling Huang 2020Bioactive Materials2020,5,4:3
4Biochemical properties of skin collagens isolated from black carp ( Mylopharyngodon piceus )显示文摘Yuanjun Jia Haibo Wang Haiyin Wang Yunyan Li Min Wang Jian Zhou 2012Food Science and Biotechnology2012,,6:2
5Task Autonomy of a Flexible Endoscopic System for Laser-Assisted Surgery显示文摘Laser beam string has ben widely studied forthe automation ofsurgery.Currently fexible instruments for laser surgery areoperated entirely by surgeons,which keeps the automation of endoluminal surgery at the initial level.This paper introducesthe design of a new workflow that enables the task autonomy of laser-assisted surgery in constrained environments such as thegastrointestinal(GI)tract with a flexible continuum robotic system.Unlike current,laser steering systems driven bypiezoelectric require the use of high voltage and are risky.This paper describes a tendon-driven 2mm diameter flexiblemanipulator integrated with an endoscope toster thelaser beamBy separating its motionfrom the total endoscopic systemthe designed flexible manipulator can automatically manipulate the laser beam.After the surgical site is searched by thesurgeon with a master/slave control,a population-based model-free control method is applied for the fexible manipulatortoachieve accurate laser beam steering while overcoming the noise from the visual feedback and disturbances from environmentduring operation.Simulations and experiments are performed with the system and control methods to demonstrate theproposed framework in a simulated constrained environment.Hangjie Mo Xiaojian Li Bo Ouyang Ge Fang Yuanjun Jia 2022Cyborg and Bionic Systems2022,,1:2
6显示文摘Li Zhengxiong Xing Yuanjun Dai Jinjin 2008Applied Surface Science2008,254,7:1
7SMART:Simulation Model for Activities,Resources and Travel显示文摘Peter R Stophew David T Hartgen Yuanjun Li 0,,:1
8SMART: simulation model for activities, resources and travel显示文摘Peter R. Stopher David T. Hartgen Yuanjun Li 1996Transportation1996,,3:1
9Curcumin enhances the response of non-Hodgkin’s lymphoma cells to ionizingradiation through further induction of cell cycle arrest at the G2/M phase andinhibition of mTOR phosphorylation显示文摘Qiao Qiao Yuanjun Jiang Guang Li 2013Oncology Reports2013,,1:1
10Evaluating the mechanical properties of anisotropic shale containing bedding and natural fractures with discrete element modeling显示文摘Natural fracture data from one of the Carboniferous shale masses in the eastern Qaidam Basin were used to establish a stochastic model of a discrete fracture network and to perform discrete element simulation research on the size efect and mechanical parameters of shale.Analytical solutions of fctitious joints in transversely isotropic media were derived,which made it possible for the proposed numerical model to simulate the bedding and natural fractures in shale masses.The results indicate that there are two main factors infuencing the representative elementary volume(REV)size of a shale mass.The frst and most decisive factor is the presence of natural fractures in the block itself.The second is the anisotropy ratio:the greater the anisotropy is,the larger the REV.The bedding angle has little infuence on the REV size,whereas it has a certain infuence on the mechanical parameters of the rock mass.When the bedding angle approaches the average orientation of the natural fractures,the mechanical parameters of the shale blocks decrease greatly.The REV representing the mechanical properties of the Carboniferous shale masses in the eastern Qaidam Basin were comprehensively identifed by considering the infuence of bedding and natural fractures.When the numerical model size is larger than the REV,the fractured rock mass discontinuities can be transformed into equivalent continuities,which provides a method for simulating shale with natural fractures and bedding to analyze the stability of a borehole wall in shale.Yingjie Li Lihong Song Yuanjun Tang Jianping Zuo Dongjie Xue 2022International Journal of Coal Science & Technology2022,9,2:1
11Sericin for Resistance Switching Device with Multilevel Nonvolatile Memory显示文摘Hong Wang Fanben Meng Yurong Cai Liyan Zheng Yuangang Li Yuanjun Liu Yueyue Jiang Xiaotian Wang Xiaodong Chen 2013Adv Mater2013,,38:1
12Chinese wild plant develop and process显示文摘Gao Yuanjun Fan Xiurong Li Guangwu 1997Utilize1997,2,1:1
13Treatment outcomes of transcatheter arterial chemoembolization combined with local ablative therapy versus monotherapy in hepatocellular carcinoma: a meta-analysis显示文摘Lili Gu Huiling Liu Linlin Fan Yuanjun Lv Zhuang Cui Yan Luo Yuanyuan Liu Guang Li Changping Li Jun Ma 2014Journal of Cancer Research and Clinical Oncology2014,,2:1
14Hunting Sodium Dendrites in NASICON-BasedSolid-State Electrolytes显示文摘NASICON-(Na superionic conductor-)based solid-state electrolytes(SSEs)are believed to be attracting candidates for solid-state sodium batteries due to their high ionic conductivity and prospectively reliable stability.However,the poor interface compatibility and the formation of Na dendrites inhibit their practical application.Herein,we directly observed the propagation of Na dendrites through NASICON-based Na3.1Zr2Si2.1P0.9O12 SSE for the first time.Moreover,a fluorinated amorphous carbon(FAC)interfacial layer on the ceramic surface was simply developed by in situ carbonization of PVDF to improve the compatibility between Na metal and SSEs.Surprisingly,Na dendrites were effectively suppressed due to the formation of NaF in the interface when molten Na metal contacts with the FAC layer.Benefiting from the optimized interface,both the Na||Na symmetric cells and Na3V2(PO4)3||Na solidstate sodium batteries deliver remarkably electrochemical stability.These results offer benign reference to the maturation of NASICON-based solid-state sodium batteries.Qiangqiang Zhang Yaxiang Lu Weichang Guo Yuanjun Shao Lilu Liu Jiaze Lu Xiaohui Rong Xiaogang Han Hong Li Liquan Chen Yong-Sheng Hu 2021Energy Material Advances2021,,1:1
15Design and implementation of a coal-dust removal device for heavy-haul railway tunnels显示文摘The Daqin Railway is China’s first electrified double-track heavy-haul railway line dedicated to coal transportation.Over the years of operation,the tunnels have been covered with a thick layer of coal dust,which also pervades in the air.Worse is that the coal dust has even buried the rail joints in some sections,making the repair and maintenance of the line difficult.This paper introduces a coal-dust removal device for railway tunnels that integrates pipeline transportation with dust-collection techniques.The device is mainly composed of a power system,a conveying system,a dust-filtration and collection system,and a control and protection system.The key technical elements of the system,such as the dust-extraction method and dust-filtration and collection parameters,are optimized based on the characteristics of the coal dust in the tunnel(obtained via field trials),which greatly enhances the adaptability of the device.Coal-dust removal efficiency reached over 20 t/h,which improves the working environment,reduces the intensity of manual work required and solves the problem of coal-dust removal from the most polluted area—within 500 m of the tunnel entrance.Yuanjun Li Zhigang Meng 2020Transportation Safety and Environment2020,2,4:1
16SMART:simulation model for activities,resources and travel显示文摘Stopher P R Hartgen D T Li Yuanjun 0,,:1
17A comprehensive review on deep learning approaches in wind forecasting applications显示文摘The effective use of wind energy is an essential part of the sustainable development of human society,in particular,at the recent unprecedented pressure in shaping a low carbon energy environment.Accurate wind resource and power forecasting play a key role in improving the wind penetration.However,it has not been well adopted in the real-world applications due to the strong stochastic characteristics of wind energy.In recent years,the application boost of deep learning methods provides new effective tools in wind forecasting.This paper provides a comprehensive overview of the forecasting models based on deep learning in the field of wind energy.Featured approaches include timeseries-based recurrent neural networks,restricted Boltzmann machines,convolutional neural networks as well as auto-encoder-based approaches.In addition,future development directions of deep-learning-based wind energy forecasting have also been discussed.Zhou Wu Gan Luo Zhile Yang Yuanjun Guo Kang Li Yusheng Xue 2022CAAI Transactions on Intelligence Technology2022,7,2:1
18Coping with stress among Chi- nese male army recruits during basic military training显示文摘Yuanjun Xie Huahua An Min Li 2015Military Behavioral Health2015,3,2:1
19Antitumor Activity of Chinese Propolis in Human Breast Cancer MCF-7 and MDA-MB-231 Cells显示文摘Hongzhuan Xuan Zhen Li Haiyue Yan Qing Sang Kai Wang Qingtao He Yuanjun Wang Fuliang Hu Thomas Efferth 2014Evidence-Based Complementary and Alternative Medicine2014,,:1
20CoSMSOL:Complex system modeling,simulation and optimization language显示文摘Complex System Modeling,Simulation and Optimization Language(CoSMSOL)is problem-oriented and designed to run on multi-core computers.This paper provides the system environment of CoSMSOL and proposes the modeling methods of complex system,language text specification,function library,algorithm library,parallel simulation algorithms and intelligent optimization algorithms which support continuous system,discrete system and agent systems.Also,we developed a simulation language compiler of CoSMSOL,which is employed in two case studies generating a multi-entity war gaming system and an aerodynamic spacecraft model.The two cases illustrate main functions and implementation processes of CoSMSOL.The results validate that CoSMSOL is useful to model agent-based system and aerospace system.Bo Hu Li Xiao Song Lin Zhang Jing Liu Peng Chi Tingyu Lin Xing Zhang Yuanjun Laili Fei Tao Tan Li 2017International Journal of Modeling, Simulation, and Scientific Computing2017,8,2:0
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