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    题名 作者 年代 出处 被引量
1A general synthetic strategy to monolayer graphene显示文摘Youqi Zhu Tai Cao Chuanbao Cao Xilan Ma Xingyan Xu Yadong Li 2018Nano Research2018,11,6:14
2Nonlinear free transverse vibrations of axially moving Timoshenko beams with two free ends显示文摘In this paper, nonlinear transverse vibrations of axially moving Timoshenko beams with two free ends are investigated. The governing equations and the associated boundary conditions are derived by the extended Hamilton principle. The method of multiple scales is applied to analyze the nonlinear partial differential equation. The natural frequencies and modes are investigated by performing the complex mode approach. The effect of natural frequencies with the stiffness and the axial speeds are numerically demonstrated. The solvability conditions are established for the cases of without and with 3:1 internal resonances. The relationships between the nonlinear frequencies and the initial amplitudes at different axial speeds and the nonlinear coefficients are showed for the case of without internal resonances. The effects of the related coefficients are demonstrated for the case of 3:1 internal resonances.LI Biao TANG YouQi CHEN LiQun 2011Science China(Technological Sciences)2011,54,8:6
3Spatial explorations of land use change and grain production in China显示文摘Peter H Verburg Youqi Chen Tom (A.) Veldkamp 2000Agriculture Ecosystems and Environment2000,,1:2
4Radiation balance and the response of albedo to environmental factors above two alpine ecosystems in the eastern Tibetan Plateau显示文摘Understanding the energy balance on the Tibetan Plateau is important for better prediction of global climate change. To characterize the energy balance on the Plateau, we examined the radiation balance and the response of albedo to environmental factors above an alpine meadow and an alpine wetland surfaces in the eastern Tibetan Plateau, using 2014 data. Although our two sites belong to the same climatic background, and are close geographically, the annual incident solar radiation at the alpine meadow site(6,447 MJ/(m2·a)) was about 1.1 times that at the alpine wetland site(6,012 MJ/(m2·a)),due to differences in the cloudiness between our two sites. The alpine meadow and the alpine wetland emitted about 38%and 42%, respectively, of annual incident solar radiation back into atmosphere in the form of net longwave radiation; and they reflected about 22% and 18%, respectively, of the annual incident solar radiation back into atmosphere in the form of shortwave radiation. The annual net radiation was 2,648 and 2,544 MJ/(m2·a) for the alpine meadow site and the alpine wetland site, respectively, accounting for only about 40% of the annual incident solar radiation, significantly lower than the global mean. At 30-min scales, surface albedo exponentially decreases with the increase of the solar elevation angle; and it linearly decreases with the increase of soil-water content for our two sites. But those relationships are significantly influenced by cloudiness and are site-specific.ShaoYing Wang Yu Zhang ShiHua Lyu LunYu Shang YouQi Su HanHui Zhu 2017Research in Cold and Arid Regions2017,9,2:2
5Regulating bifunctional flower-like NiFe_(2)O_(4)/graphene for green EMI shielding and lithium ion storage显示文摘Environment and energy are the eternal hot topics in the world,multiloculated microscale materials have attracted great attention in the field of electromagnetic interference(EMI)shielding and lithium ions storage.Herein,a novel flower-like NiFe_(2)O_(4)/graphene composite with adjustable structure was fabricated as EMI shielding material and anode material of lithium-ion batteries.NiFe_(2)O_(4)/graphene composite is a potential green EMI shielding material.The EMI shielding effectiveness(SE)increases with the increase of graphene content in NiFe_(2)O_(4)/graphene composite,and the total EMI SE of NiFe_(2)O_(4)/graphene with 73.6 wt.%graphene increases from 26.5 to 40.6 d B with the increase of frequency in 2–18 GHz.Furthermore,it exhibits long-life and large capacity lithium storage performance at high current density.The capacity reaches 732.79 m Ah g^(-1)after 100 cycles at 0.1 A g^(-1),recovering to more than 139%from the minimum capacity value.After 300 cycles at 0.5 A g^(-1),the capacity increases to 688.5 mAh g^(-1).The initial capacities at 2 and 5 A g^(-1)are 704.9 and 717.8 mAh g^(-1),and remain 297.9 and 203.2 m Ah g^(-1)after 1000 cycles.The distinguished EMI shielding performance and electrochemical performance are mainly ascribed to the structure regulation of NiFe_(2)O_(4)/graphene composite,as well as the synergistic effect of graphene and NiFe_(2)O_(4).This research opens up infinite opportunities for the application of multifunctional and interdisciplinary materials.Lihua Yao Wenqiang Cao Jianguo Zhao Qi Zheng Yuchang Wang Shang Jiang Qiliang Pan Jie Song Youqi Zhu Maosheng Cao 2022Journal of Materials Science & Technology2022,,32:2
6Effect of Metallic Zn Powder on Oxidation Resistance of Al_2O_3-C Refractories显示文摘Al2O3-C specimens were prepared by using tabular corundum, flaky graphite, Al, Si, and Zn powder as starting materials and phenolic formaldehyde resin as binder. Keeping the mass ratios of tabular corundum, flaky graphite, Al and Si constant, different contents of Zn (0, 0.5%, 1%, 2% and 3%) were added respectively. The specimens were heat treated at 120-220℃ for 24h, and then fired at 1400℃ for 3h in air atmosphere. The mass change rate, thickness of decarburization layer, apparent porosity, bulk density and microstructure of the products were determined and observed by means of SEM and EDX. The results show that the specimen with 2% Zn was characterized by minimum in thickness of decarburization layer and in apparent porosity and maximum in bulk density. Consequently, the specimen with 2% metal Zn is supposed to perform the best oxidation resistance.LI Youqi KE Changming LI Yousheng LI Nan 2006China's Refractories2006,15,4:2
7A fusion–fission hybrid reactor with water-cooled pressure tube blanket for energy production显示文摘Hongchun Wu Tiejun Zu Suizheng Qiu Xinli Gao Youqi Zheng Liangzhi Cao Wenxi Tian 2012Progress in Nuclear Energy2012,,:1
8Spatial explorations of land use change and grain production in China显示文摘Verburg Peter H Chen Youqi Veldkamp Tom A 2000Agriculture Ecosystems and Environment2000,82,13:1
9Digital-element simulation of textile processes显示文摘Wang Youqi Sun Xuekun 2001Composites Science and Tech- nology2001,61,2:1
10Multichain digital element analysis in textile mechanics 显示文摘Zhou Guangming Sun Xuekun Youqi Wang 2004Composites Science and Technology2004,64,2:1
11Integrating environmental impact minimization into conceptual chemical process design - a process systems engineering review 显示文摘Youqi Yang Lei Shi 2000Computers and Chemical Engineering2000,,24:1
12Angiotensin induces interleukin-6 transcription in vascular smooth muscle cells through pleiotropic activation of nuclear factor-κB transcription factors显示文摘Youqi Han Marschall S Runge 1999Circulation1999,84,:1
13Spontaneous Monolayer Dispersion of Oxides and Salts onto Surface of Supports:Application to Heterogeneous Catalyst显示文摘Xie Youchang Tang Youqi 1990Adv Catal1990,37,1:1
14.中国医药工业杂志[J],Dong(尤启冬),CHEwen-Jun(车文军),804-_807显示文摘LIzhi-Vu(李志裕) YOUQi 3V(11) 0,,:1
15Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports: applications to heterogeneous catalysis显示文摘XIE Youehang TANG Youqi 1990Adv Catal1990,,37:1
16Digital-element simulation of textile processes显示文摘 Xuekun Sun 2001Composites Science and Technology 612001,61,:1
17Multi-chain digital element analysis in textile mechanics显示文摘 Xuekun Sun Youqi Wang 2004Composites Science andTechnology2004,64,:1
18Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports; Application to heterogeneouscatalysis显示文摘Xie Youchang Tang Youqi 1990AdvCatal1990,37,17:1
19Mg,Ti-base surface integrated layer and bulk doping to suppress lattice oxygen evolution of Ni-rich cathode material at a high cut-off voltage显示文摘The Nickel-rich layered cathode materials charged to 4.5 V can obtain a specific capacity of more than 200 m Ah g^(-1).However,the nickel-rich layered cathode materials suffer from the severe capacity fade during high-voltage cycling,which is related to the phase transformation and the surface sides reactions caused by the lattice oxygen evolution.Here,the simultaneous construction of a Mg,Ti-based surface integrated layer and bulk doping through Mg,Ti surface treatment could suppress the lattice oxygen evolution of Nirich material at deep charging.More importantly,Mg and Ti are co-doped into the particles surface to form an Mg_(2)TiO_(4) and Mg_(0.5–x)Ti_(2–y)(PO_(4))_(3) outer layer with Mg and Ti vacancies.In the constructed surface integrated layer,the reverse electric field in the Mg_(2)TiO_(4) effectively suppressed the outward migration of the lattice oxygen anions,while Mg_(0.5–x)Ti_(2–y)(PO_(4))_(3) outer layer with high electronic conductivity and good lithium ion conductor could effectively maintained the stability of the reaction interface during highvoltage cycling.Meanwhile,bulk Mg and Ti co-doping can mitigate the migration of Ni ions in the bulk to keep the stability of transition metal–oxygen(M-O)bond at deep charging.As a result,the NCM@MTP cathode shows excellent long cycle stability at high-voltage charging,which keep high capacity retention of 89.3%and 84.3%at 1 C after 200 and 100 cycles under room and elevated temperature of 25 and 55°C,respectively.This work provides new insights for manipulating the surface chemistry of electrode materials to suppress the lattice oxygen evolution at high charging voltage.Fan Peng Youqi Chu Yu Li Qichang Pan Guangchang Yang Lixuan Zhang Sijiang Hu Fenghua Zheng Hongqiang Wang Qingyu Li 2022Journal of Energy Chemistry2022,31,8:1
20uzhi-yu(李志裕),Dong(尤启冬),Fang(唐伟方),.中国药科大学学报显示文摘TANGWei YOUQi 0,,:1
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