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| 1 | GLOBAL ATTRACTIVENESS OF DISCRETE-TIME EPIDEMIC OUTBREAK IN NETWORKS显示文摘 | QINGCHU WU XINCHU FU GUANGHU ZHU | 2012 | International Journal of Biomathematics2012，5，1： | 5 |
| 2 | Modeling and high-precision processing of the azimuth shift variation for spaceborne HRWS SAR显示文摘One basic assumption for high-efcient SAR imaging algorithms is azimuth-shift-invariance of SAR data.The new spaceborne high-resolution wide-swath(HRWS)SAR generation will retain the same signifcant swath depth of the past but will achieve much higher resolution.The formerly insignifcant variance of efective radar velocity along azimuth path will cause noticeable focusing blurring at azimuth scene edges.It is a new problem to accommodate the azimuth-shift variance with high efciency and high precision.In this paper,the azimuth variation of efective velocity and main influencing factors are analyzed and accurately modeled.A highly accurate and efcient phase preserving processor with embedded azimuth variance compensation for sliding spotlight mode is proposed.The proposed processor does not add extra computing load and inherits the high efciency of the original azimuth-invariant subaperture approach.Through careful design of the fourthorder phase terms of the processing functions,azimuth variation compensation can be achieved in company with the original baseband azimuth scaling steps.Simulation with point targets in C-band HRWS sliding spotlight mode is made to validate the focusing and phase preservation performance of the proposed algorithm. | HE Feng CHEN Qi DONG Zhen JIN GuangHu LIANG DianNong | 2013 | Science China(Information Sciences)2013，56，10： | 4 |
| 3 | The dynamics of a mutual interference age structured pred- ator-prey model with time delay and impulsive pertur- bations on predators 显示文摘 | ZHU Guanghu MENG Xinzhu CHEN Lansun | 2010 | Appl Math and Comput2010，216，1： | 1 |
| 4 | Effect of Friction on Dynamic Response of A Power Split Transmission System显示文摘The tooth surface friction stiffness and friction torque coefficient equations of cylindrical gear are derived.On the basis of factors such as time varying friction coefficient and mesh stiffness,support stiffness,torsional stiffness and comprehensive error,the dynamic equations of the gear trains with bending torsional coupling are established.Using the Fourier series method,the total response of the system is obtained,and the influence of friction on it is analyzed.The results show that when the spur gear enters the meshing,the frictional amplitude of the tooth surface is larger than that of the gear when it is withdrawn from engagement,and the meshing force fluctuates greatly.The frictional force and dynamic meshing force of the herringbone gear tooth surface are relatively stable,and the fluctuation amplitude is much smaller than that of the spur gear.The amplitude of the bearing vibration is not affected by the friction,but the friction has a certain influence on the bearing force of the output shaft.The first order natural frequency of the split stage and the power confluence stage has a large influence on the vibration of the bearing force.In general,the natural frequency of the power confluence stage has a large proportion of influence. | JIN Guanghu YANG Haoyun LU Fengxia ZHU Rupeng | 2019 | Transactions of Nanjing University of Aeronautics and Astronautics2019，36，3： | 1 |
| 5 | Structure and motion of non-rigid ob- ject under perspectiv projection 显示文摘 | Guanghu W Tsui T H Zhanyi H | 2007 | Pattern Recognition Letters2007，28，4： | 1 |
| 6 | Highly Enantio‐ and Diastereoselective Reactions of γ‐Substituted Butenolides Through Direct Vinylogous Conjugate Additions显示文摘 | Wen Zhang Davin Tan Richmond Lee Guanghu Tong Wenchao Chen Baojian Qi Kuo‐Wei Huang Choon‐Hong Tan Zhiyong Jiang | 2012 | Angew Chem Int Ed2012，，40： | 1 |
| 7 | Development of a thermal-hydraulic safety analysis code RETAC for AP1000显示文摘 | WANG Weiwei TIAN Wenxi SU Guanghu | 2012 | Progress in Nuclear Energy2012，55，1： | 1 |
| 8 | Global attractivity of a network-based epidemic SIS model with nonlinear infectivity显示文摘 | Guanghu Zhu Xinchu Fu Guanrong Chen | 2011 | Communications in Nonlinear Science and Numerical Simulation2011，，： | 1 |
| 9 | 普罗斯左汀(prostratin)的全合成显示文摘文章简介由植物中提取出的普罗斯左汀以及具有类似结构的二萜天然分子显示出多种重要的生物活性。其中,普罗斯左汀可以激活潜伏的HIV病毒,因此当与现有抗HIV药物组合使用,可能获得根除HIV感染的疗法。同时,普罗斯左汀还表现出显著抗肿瘤活性。但是,针对普罗斯左汀及这一大类天然产物的合成在化学上具有非常高的挑战性,近40多年来尽管有许多相关研究,但成功的合成路线非常少,而且存在路线长、难以用于系统结构优化的问题。 | Guanghu Tong Zhi Liu 李鹏飞 | 2019 | 科学新闻2019，0，2： | 0 |
| 10 | Analysis of the forces acting on the saltating particles in the coupled wind-sand-electricity fields显示文摘Based on the theoretical model describing the saltation of sand particles in the coupled wind-sand- electricity fields, the numerical simulations of the forces acting on saltating particles, such as the aerodynamic drag force, Magnus effect, Saffman force and electrostatic force, are analyzed in com- parison to the gravity force of the particles in the steady windblown sand movement. Furthermore, the laws of the above forces vary with the friction velocity, the diameter of the sand particle, the initial an- gular velocity and the lift-off velocity are discussed. | WU JianJun YAN GuangHu | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，2： | 0 |
| 11 | Finite Element Modeling and Vibration Analysis of Sprag Clutch⁃Flexible Rotor System显示文摘To study the overall vibration characteristics of the sprag clutch⁃flexible rotor system(SC⁃FRS)under high⁃speed operating conditions,a finite element model of SC⁃FRS considering rotor flexibility and bearing support stiffness was established based on the proposed calculation method of the stiffness matrix.According to this model,the natural frequency and mode shape of the system are calculated,and the correctness of the model was verified by comparing it with the calculation results of ANSYS software.Under the action of unbalance,the bending⁃torsion coupled vibration and the dynamic load of the inter⁃shaft bearings were analyzed,and it is found that the resonant peak in the torsional direction has the same resonance frequency as that in the bending direction.A test rig for the sprag clutch⁃rotor system was built,and the axis trajectory and critical speed were tested.The test results show that the finite element model of SC⁃FRS can accurately describe the vibration characteristics of the system.The coupling vibration characteristics analysis of the sprag clutch⁃flexible rotor system can provide theoretical guidance for the dynamic design of the sprag clutch components. | Chuang Huang Yongqiang Zhao Guanghu Jin | 2022 | Journal of Harbin Institute of Technology(New Series)2022，29，2： | 0 |
| 12 | Novel Gas-tight Multi-sampler for Discrete Deep-sea Water显示文摘The issues of how to quickly collect seawater samples and of how to make sure that those samples truly reflect the in-situ information on gas composition and concentration have therefore become a hot but difficult topic in the field of ocean technology.Most conventional seawater samplers only focus on collecting seawater itself,but take little consideration on gas preservation.A set of new oceanographic tools are presented for ocean resource exploration such as hydrothermal sulfide and gas hydrate,and for investigations on the processes and mechanisms of marine physical,chemical and biological evolutions.A gas-tight deep-sea water sampling system(GTWSS) is designed for the collection of deep-sea geochemical samples.This set of tools mainly consists of a conductivity temperature depth profiler(CTD),release devices and gas-tight deep-sea water samplers(GTWS).The GTWS is able to hold the gases in deep-sea water samples tightly,providing in-situ information on gas contents in the seawater samples and can be deployed on a routine wire-deployed CTD sampler for multi-layer discrete sampling of gas-tight seawater.Sea trials are performed successfully in 2008 and 2009,on a research vessel named HaiYang Si Hao in South China Sea,with the deepest trial depth 3 930 m.GTWSS is capable of quickly sampling 12 discrete gas-tight seawater samples(8.3 L per sample) during its single deployment.The head space method is employed to separate the gases from the seawater samples immediately after recovery of the seawater samples on the vessel.Field geochemical analysis is carried out by gaseous hydrocarbon sensors and an infrared gas analyzer.Results show that the concentrations of CH4 and CO2 in the seawater sampled by GTWSS are higher than those sampled by general non-gas-tight water samplers,thus confirming the gas tightness of GTWSS.Seawater samples can be collected quickly by using GTWSS,and GTWSS can keep the samples' integrity quite well. | HUANG Haocai YANG Canjun CHEN Shicheng CHEN Daohua SUN Chunyan NIU Wenda LI Fengbo LIU Guanghu CHEN Ying | 2012 | Chinese Journal of Mechanical Engineering2012，25，4： | 0 |
| 13 | Analysis of Coupling between DR and Microstrip显示文摘The coupling between dielectric resonator (DR) and microstrip is theoretically analyzed in thispaper.The equivalent circuit and corresponding components’ expression are achieved.Also,the formula of thecoupling ratio is deduced,which is the critical parameter to calculate the values of components.The analysis of thepaper can be used in modeling and strict design in DR applications such as dielectric resonator oscillators(DROs)and DR filters.At the end of the paper,an example of DRO design based on the analysis above is given.Thecoincidence between modulation and measure shows the significance of the paper. | LIAO Juan LIU Guanghu(School of Electronic Engineering,UESTC Chengdu 610054 China) | 2003 | Journal of Electronic Science and Technology of China2003，1，1： | 0 |
| 14 | AFFECTION OF ER FLUID ON STIFFNESS OF VIBRATION SYSTEM显示文摘On the application of an electric field, the mechanical properties of ER(Electro-rheological) fluid are very complex. The damping force of ER fluid is linear without electric field and is nonlinear when an electric field is applied. By increasing the strength of the electric field, the behavior of ER fluid changes from linear viscous to nonlinear viscoelastic-plastic. External electric fluid changes natural behavior of system with ER fluid besides the mechanical properties of ER fluid. The affect of ER fluid on the stiffness of nonlinear vibration system with ER dampers is analyzed by iterative perturbation method. The results show that the stiffness of structure would be increased with growing of the strength of the electric field. | Yang GuangHu XulinDong XiaogangHan XiuqingDepartment of Basic Sciences,Changchun University of Technology,Changchun 130012, China | 2003 | Chinese Journal of Mechanical Engineering2003，16，1： | 0 |
| 15 | Geology, Mineralization, Fluid Inclusion and Stable Isotope of the Early Cretaceous Sn and Associated Metal Deposits in the Southern Great Xing’an Range, NE China: A Review显示文摘The Southern Great Xing’an Range(SGXR) hosts a number of Early Cretaceous Sn and associated metal deposits, which can be divided into three principal types according to their geological characteristics: skarn type deposits, porphyry type deposits and hydrothermal vein type deposits. Fluid inclusion assemblages of different types of deposits are quite different, which represent the complexities of metallogenic process and formation mechanism. CH4 and CO2 have been detected in fluid inclusions from some of deposits, indicating that the ore-forming fluids are affected by materials of Permian strata. Hydrogen and oxygen isotope data from ore minerals and associated gangue minerals indicate that the initial ore fluids were dominated by magmatic waters, some of which had clearly exchanged oxygen with wall rocks during their passage through the strata. The narrow range for the δ34S values presumably reflects the corresponding uniformity of the ore forming fluids, and these δ34S values have been interpreted to reflect magmatic sources for the sulfur. The comparation between lead isotope ratios of ore minerals and different geological units’ also reveals that deeply seated magma has been a significant source of lead in the ores. | WANG Chengyang LIU Guanghu SUN Zhenjun LIU Jie LI Jianfeng LIANG Xinyang | 2019 | Acta Geologica Sinica(English Edition)2019，93，5： | 0 |
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