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| 1 | Nonlinear 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 | 2011 | Science China(Technological Sciences)2011，54，8： | 6 |
| 2 | Spontaneous Monolayer Dispersion of Oxides and Salts onto Surface of Supports:Application to Heterogeneous Catalyst显示文摘 | Xie Youchang Tang Youqi | 1990 | Adv Catal1990，37，1： | 1 |
| 3 | Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports: applications to heterogeneous catalysis显示文摘 | XIE Youehang TANG Youqi | 1990 | Adv Catal1990，，37： | 1 |
| 4 | Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports; Application to heterogeneouscatalysis显示文摘 | Xie Youchang Tang Youqi | 1990 | AdvCatal1990，37，17： | 1 |
| 5 | Parity Violation of Electroweak Force in Phase Transitions of Single Crystals of D- and L-Alanine and Valine显示文摘 | Wenqing Wang Fang Yi Yongming Ni Zhongxian Zhao Xianglin Jin Youqi Tang | 2000 | Journal of Biological Physics2000，，1： | 1 |
| 6 | SCORE: A New Empirical Method for Estimating the Binding Affinity of a Protein-Ligand Complex显示文摘 | Renxiao Wang Liang Liu Luhua Lai Youqi Tang | 1998 | Journal of Molecular Modeling1998，，12： | 1 |
| 7 | Dynamic stability of axially accelerating Timoshenko beam averaging method 显示文摘 | YANG Xiaodong TANG Youqi CHEN Lijun | 2010 | European Journal of Mechanics-A/Solids2010，29，1： | 1 |
| 8 | Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports:application to heterogeneous catalysis显示文摘 | XIE Youchang TANG Youqi | 1990 | Advances in Catalysis1990，37，： | 1 |
| 9 | Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports: Application to heterogeneouscatalysis 显示文摘 | Xie Youchang Tang Youqi | 1990 | Adv Catal1990，37，17： | 1 |
| 10 | Dynamic stability of axially accelerating viscoelastic plates with longitudinally varying tensions显示文摘The dynamic stability of axially accelerating plates is investigated.Longitudinally varying tensions due to the acceleration and nonhomogeneous boundary conditions are highlighted.A model of the plate combined with viscoelasticity is applied.In the viscoelastic constitutive relationship,the material derivative is used to take the place of the partial time derivative.Analytical and numerical methods are used to investigate summation and principal parametric resonances,respectively.By use of linear models for the transverse behavior in the small displacement regime,the plate is confined by a viscous damping force.The generalized Hamilton principle is used to derive the governing equations,the initial conditions,and the boundary conditions of the coupled planar vibration.The solvability conditions are established by directly using the method of multiple scales.The Routh-Hurwitz criterion is used to obtain the necessary and sufficient condition of the stability.Numerical examples are given to show the effects of related parameters on the stability boundaries.The validity of longitudinally varying tensions and nonhomogeneous boundary conditions is highlighted by comparing the results of the method of multiple scales with those of a differential quadrature scheme. | Youqi TANG Dengbo ZHANG Mohan RUI Xin WANG Dicheng ZHU | 2016 | Applied Mathematics and Mechanics(English Edition)2016，37，12： | 1 |
| 11 | Spontaneous monolayer dispersion ofoxides and salts onto surfaces of supports: Application to heterogeneous catalysis 显示文摘 | XIE Youchang TANG Youqi | 1990 | Advance in Catalysis1990，37，17： | 1 |
| 12 | Influence of supercritical and natural drying methods on structure and properties of porous silicon显示文摘We have studied the surface morphology, photoluminescence (PL), Raman spectra and optical absorption of the porous silicon (PS) samples prepared under supercritical drying (SD) and natural drying (ND) process. The experimental results of scan electron microphotograph and Raman spectra show that there are obvious differences in microstructure between the SD and ND samples. No crack of the skeleton has been found in the SD sample, but the skeleton of the ND sample has heavily destroyed. Besides, the PL and absorption spectra of the SD sample are not the same as those of the ND sample. | XU Dongsheng GUO Guolin GUI Linlin TANG Youqi ZHANG Bairui QIN Guogang | 2000 | Chinese Science Bulletin2000，45，9： | 1 |
| 13 | Spontaneous monolayer dispersion of oxides and salts onto surfaces of supports: Application to heterogeneous catalysis 显示文摘 | Xie Youchang Tang Youqi | 1990 | Adv Catal1990，37，17： | 1 |
| 14 | Complex modes and traveling waves in axially moving Timoshenko beams显示文摘Complex modes and traveling waves in axially moving Timoshenko beams are studied. Due to the axially moving velocity, complex modes emerge instead of real value modes. Correspondingly, traveling waves are present for the axially moving material while standing waves dominate in the traditional static structures. The analytical results obtained in this study are verified with a numerical differential quadrature method. | Youqi TANG Erbao LUO Xiaodong YANG | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，4： | 1 |
| 15 | Spontaneous Monolayer Dispersion of Oxides and Salts onto Surface of Supports:Application to Heterogeneous Catalyst显示文摘 | Xie Youchang Tang Youqi | | 0，，01： | 1 |
| 16 | IS4 peptide forms ion channel in rat skeletal muscle cell membrane显示文摘A 22-mer peptide, identical to the primary sequence of domain I segment 4 (IS4) of rat brain sodium channel I, has been synthesized. IS4 peptide can incorporate into cultured rat skeletal myotube membranes and form ion channels. With patch clamp cell-attached technique single channel currents through IS4 channels can be recorded. The single channel conduc- | Lin Bao Zhenwei Miao Pei’ai Zhou Yun Jiang Renji Zhang Youqi Tang | 1999 | Chinese Science Bulletin1999，44，24： | 0 |
| 17 | Predictive toxicology of chemicals and database mining显示文摘The toxic chemicals from the database Registry of Toxic Effects of Chemical Substances (RTECS) were analyzed by structural similarity comparison, which shows that the structure patterns or characteristics of toxic chemicals exist in a sufficiently large database. Then, a two-step strategy was proposed to explore noncongeneric toxic chemicals in the database: the screening of structure patterns by similarity comparison and the derivation of detailed relationship between structure and activity by using comparative molecular field analysis (CoMFA) of Quantitative Structure-Activity Relationship (QSAR) technologies. From the performance of the procedure, such a stepwise scheme is demonstrated to be feasible and effective to mine a database of toxic chemicals. It can be anticipated that database mining of toxic chemicals will be a new area for predictive toxicology of chemicals. | Jiansuo Wang Luhua Lai Youqi Tang | 2000 | Chinese Science Bulletin2000，45，12： | 0 |
| 18 | Application of TERRA/MODIS images, TM images and weather data to assess the effect of cold damage on rice yield显示文摘Data assimilation is extensively applied in agricultural remote sensing application.However,integration of multi-temporal and high spatial resolution images with crop growth model to evaluate the effect of cold damage on paddy rice was still lacking.In this paper,authors applied data assimilation combining LANDSAT/TM,a series of terra MODIS images with SIMRIW model to detect how cold damage affected paddy rice yield per unit in the Wuchang county,Heilongjiang province for the year 2006.In the study,MODIS images selected corresponding to a series of the key rice growth phases were utilized to retrieve daily LAI values that were needed in the SIMRIW model.Meanwhile,TM was applied to accurately extract paddy rice sown areas.The study results showed that the yield per unit was 10,628.5840 kg/ha under cold damage condition,which was little less than 10,768.3210 kg/ha under optimal condition.Moreover,the ratio of the calculated yield per value under cold damage condition to the actual value of paddy rice yield per unit was 0.56.The result was better than that acquired in USA and Japan.The results of this study expected to provide suggestions to policy-makers and reference to related research. | He Yingbin Satoshi Uchida Tang Huajun Chen Youqi Liu Jia | 2010 | International Journal of Agricultural and Biological Engineering2010，3，2： | 0 |
| 19 | Internal resonance of an axially transporting beam with a two-frequency parametric excitation显示文摘This paper investigates the transverse 3:1 internal resonance of an axially transporting nonlinear viscoelastic Euler-Bernoulli beam with a two-frequency parametric excitation caused by a speed perturbation.The Kelvin-Voigt model is introduced to describe the viscoelastic characteristics of the axially transporting beam.The governing equation and the associated boundary conditions are obtained by Newton’s second law.The method of multiple scales is utilized to obtain the steady-state responses.The RouthHurwitz criterion is used to determine the stabilities and bifurcations of the steady-state responses.The effects of the material viscoelastic coefficient on the dynamics of the transporting beam are studied in detail by a series of numerical demonstrations.Interesting phenomena of the steady-state responses are revealed in the 3:1 internal resonance and two-frequency parametric excitation.The approximate analytical method is validated via a differential quadrature method. | Dengbo ZHANG Youqi TANG Ruquan LIANG Yuanmei SONG Liqun CHEN | 2022 | Applied Mathematics and Mechanics(English Edition)2022，43，12： | 0 |
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