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| 1 | Electrochemical synthesis of ammonia using a cell with a Nafion membrane and SmFe_(0.7)Cu_(0.3-x)Ni_xO_3(x=0―0.3) cathode at atmospheric pressure and lower temperature显示文摘Samaria-doped ceria Ce0.8Sm0.2O2-δ(SDC) and SmFe0.7Cu0.3-xNixO3 have been synthesized by the sol-gel method and characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM) and scanning electron microscopy(SEM).The electrochemical synthesis of ammonia was investigated at atmospheric pressure and low temperature,using the SFCN materials as the cathode,a Nafion membrane as the electrolyte,nickel-doped SDC(Ni-SDC) as the anode and silver-platinum paste as the current collector.Ammonia was synthesized from 25 to 100℃ when the SFCN materials were used as cathode,with SmFe0.7Cu0.1Ni0.2O3 giving the highest rates of ammonia formation.The maximum rate of evolution of ammonia was 1.13 × 10-8 mol·cm-2·s-1 at 80℃,and the current efficiency reached as high as 90.4%. | XU GaoChao,LIU RuiQuan & WANG Jin College of Chemistry and Chemical Engineering,Xinjiang University,Urumqi 830046,China | 2009 | Science China Chemistry2009，52，8： | 11 |
| 2 | Design of robust non-fragile H-infinity controllerbased on Delta operator theory显示文摘Considering that the controller parameters are of additive norm-bounded uncertainties when realized,a design method of robust non-fragile H-infinity controller for uncertain system based on Delta operator theory is illustrated in this paper.A sufficient and necessary condition of the existence for the controller is given,which is presented in LMI forms.Finally,the designed method is used in the speed control system of permanent magnet linear synchronous motor (PMLSM).With the designed controller,the resulted speed closed-loop system is still stable and has the expected H- infinity performance even if the sample period is reduced and the parameters of the controller and the controlled object are of variations.The results show that the designed method is effective. | Ruiquan LIN Fuwen YANG Qiugang CHEN | 2007 | 控制理论与应用(英文版)2007，5，4： | 3 |
| 3 | Grain refining technique of AM60B alloy by Al-Ti-B master alloy显示文摘The effects of grain refining parameters on grain size of AM60B magnesium alloy have been investigated using an Al-5Ti-1B master alloy as refiner; and an appropriate refining technique has been developed. The results indicate that the Al-Ti-B master alloy is an effective grain refiner for AM60B alloy and the grain size can be decreased from 348 μm to 76 μm. Raising the addition temperature or the pouring temperature is beneficial for grain refinement; while for the addition amount and holding time, there is an optimal value. The appropriate grain refining technique is that 0.3% Al-Ti-B master alloy is added at 780oC and then the melt is held for 30 min before pouring. The above phenomena can be explained by the refining mechanisms that have been proposed from the related studies on Al and Mg alloys and theoretical analysis. | Chen Tijun Wang Ruiquan Ma Ying Hao Yuan | 2011 | China Foundry2011，8，4： | 2 |
| 4 | Design, Synthesis and Herbicidal Activities of Tetrahydroisoindoline-1,3-dione Derivatives Containing Alkoxycarbonyl Substituted 2-Benzoxazolinone显示文摘几不同代替 alkoxycarbonyl 的 2-benzoxazolinone 一半被合并了到 tetrahydroisoindoline-1,3-dione 脚手架提供 25 混合物(1a-1u 和 2a-2d ) 。这些混合物的结构被 1 H 和 13 C NMR, HRMS 和 X 光检查单个水晶的衍射。一些这些混合物(1g, 1h, 1j, 1k ) 对以 375 g AI·ha −1 的率的青麻 theophrasti, Amaranthus retroflexus 和 Echinochloa crus-galli 的展出优秀 herbicidal 活动。在他们之中,混合物 1h 和 1j 分别地与 1.8 和 5.3 g AI·ha −1, 的编辑 50 价值对青麻 theophrasti 显示了最好的出现以后的 herbicidal 效果,它比商业 acifluorfen 的优异(44.3 g AI·ha −1) 。地试用证明复合 1h 展出了类似的 herbicidal 活动到高集中 atrazine,并且发现了比 atrazine 为玉米更安全。这研究的结果因此证明复合 1h 能潜在地为玉米领域被用作出现以后的除草剂。 | Hao Zhang Kechang Liu Ruiquan Liu Qibo Li Yongqiang Li Qingmin Wang Shangzhong Liu | 2015 | Chinese Journal of Chemistry2015，33，7： | 2 |
| 5 | Nonfragile guaranteed cost control for Delta operator-formulated uncertain time-delay systems显示文摘With consideration that the controller parameters may vary from the designed value when the controller is realized, based on Lyapunov stability theory, a design method of nonfragile guaranteed cost control for a class of Delta operator-formulated uncertain time-delay systems is studied. A sufficient condition for the existence of the nonfragile guaranteed cost controller is given. A numeric example is then given to illustrate the effectiveness and the feasibility of the designed method. The results show that even if the parameters of the designed controller are of variations, the closed-loop system is still asymptotically stable and the super value of the cost function can also be obtained, while the closed-loop system will be unstable if the variations of the controller parameters are not considered when the controller is designed. The nonfragile guaranteed cost controller derived from the traditional shift operator method may cause the closed-loop system to be unstable, while the nonfragile guaranteed cost controller based on Delta operator method can avoid the unstable problem of the closed-loop system. | Ruiquan LIN, Silian CHEN, Xuwei DING (College of Electrical Engineering and Automation, Fuzhou University, Fuzhou Fujian 350108, China) | 2010 | 控制理论与应用(英文版)2010，8，2： | 2 |
| 6 | Effect of the Inclination Angle on Slippage Loss in Gas-Liquid Two-Phase Flow显示文摘The lifting efficiency and stability of gas lift well are affected by the socalled slippage-loss effect in gas-liquid two-phase flow.The existing studies on this subject have generally been based on vertical and horizontal wells.Only a few of them have considered inclined pipes.In the present work a new focused study is presented along these lines.More specifically,we use the non-slip pressure drop model with Flanigan’s fluctuation correction coefficient formula(together with the parameters of slippage density,slippage pressure drop and slippage ratio)to analyze the influence of the inclination angle on slippage loss for different conditions(different gas-liquid superficial velocity and pipe diameters).Moreover,the“standard regression coefficient method”is used for multi-factor sensitivity analysis.The experimental results indicate that slippage loss is affected by multiple factors,and the influence of the inclination angle on slippage loss is less significant than other factors.The change of the slippage pressure drop with the superficial velocity of gas-liquid is similar to that of the total pressure drop.The inclination angles of 45°and 60°have the greatest influence on slippage loss.The correlation between slippage density and slippage ratio is not obvious.Using the so-called slippage ratio seems to be a more accurate option to evaluate the degree of slippage loss. | Yushan Liu Yubin Su Zhenhua Wu Wei Luo Ruiquan Liao | 2020 | Fluid Dynamics & Materials Processing2020，16，3： | 2 |
| 7 | Observer-based H-infinity output feedback control with feedback gain and observer gain variations for Delta operator system显示文摘Considering that the controller feedback gain and the observer gain are of additive norm-bounded variations,a design method of observer-based H-infinity output feedback controller for uncertain Delta operator systems is proposed in this paper.A sufficient condition of such controllers is presented in linear matrix inequality(LMI) forms.A numerical example is then given to illustrate the effectiveness of this method,that is,the obtained controller guarantees the closed-loop system asymptotically stable and the expected H-infinity performance even if the controller feedback gain and the observer gain are varied. | Ruiquan LIN Fuwen YANG Renchong PENG | 2009 | 控制理论与应用(英文版)2009，7，2： | 1 |
| 8 | Destabilization of oil droplets in produced water from ASP flooding显示文摘 | Shubo Deng Gang Yu Zhanpeng Jiang Ruiquan Zhang Yen Peng Ting | 2004 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2004，，： | 1 |
| 9 | On Impulsive Control and Its Application to Chen's Chaotic System显示文摘 | Guan Zhihong Liao Ruiquan Zhou Feng | 1998 | International Journal of Bifurcation and Chaos1998，12，5： | 1 |
| 10 | Semisolid Microstructure Evolution of AZglD Magnesium Alloy Refined by Al- Ti -B 显示文摘 | Chen Tijun Wang Ruiquan Ma Ting | 2011 | Materials Research- Ibero- American Journal of Materials2011，14，4： | 1 |
| 11 | Semisolid microstructure evolution of AZ91D magnesium alloy refined by Al-Ti-B 显示文摘 | Chen Tijun Wang Ruiquan Ma Ting | 2011 | Materials Research-ibero-american Journal of materials2011，14，4： | 1 |
| 12 | Synthesis and application of amphoteric starch graft polymer显示文摘 | Song Hui Wu Di Zhang Ruiquan | | 0，，02： | 1 |
| 13 | Theoretical aspects of nonlinear echo image system显示文摘In order to develop the nonlinear echo image system to diagnose pathological changes in biological tissue , a simple physical model to analyse the character of nonlinear reflected wave in biological medium is postulated . The propagation of large amplitude plane sound wave in layered biological media is analysed for the one dimensional case by the method of successive approximation and the expression for the second order wave reflected from any interface of layered biological media is obtained . The relations between the second order reflection coefficients and the nonlinear parameters of medium below the interface are studied in three layers interfaces. Finally, the second order reflection coefficients of four layered media are calculated numerically. The results indicate that the nonlinear parameter B/A of each layer of biological media can be determined by the reflection method. | ZHANG Ruiquan, FENG Shaosong (Shanghai Acoustics Laboratory, Academia Sinica Shanghai 200032, China) | 2003 | 声学技术2003，22，z1： | 1 |
| 14 | Simulation and experimentation on the contact width and pressure distribution of lip seals显示文摘 | Lee Chunying Lin Chaosung Jian Ruiquan | 2006 | Tribology International2006，39，9： | 1 |
| 15 | Synthesis and Application of Amphoteric Starch Graft Polymer显示文摘 | Song Hui Wu Di Zhang Ruiquan | 2009 | Carbohydr Polym2009，78，2： | 1 |
| 16 | Influence of Post-annealing Conditions on Properties of ZnO: Ag Films 显示文摘 | DUAN L GAO Wei CHEN Ruiquan | 2008 | Solid State Commun2008，145，： | 1 |
| 17 | Synthesis and application of amphoteric starch graft polymer显示文摘 | Song Hui Wu Di Zhang Ruiquan | 2009 | Carbohydrate Polymers2009，78，2： | 1 |
| 18 | Synthesis and application of amphoteric starch graft polymer显示文摘 | SONG HUI WU DI ZHANG RUIQUAN | 2009 | Carbohydrate Polymers2009，78，2： | 1 |
| 19 | Characterization and demulsificatlon of produced liquid from weak base ASP flooding 显示文摘 | Zhang Ruiquan Liang Chenghao Wu Di | 2006 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2006，290，3： | 1 |
| 20 | On the Development of a Model for the Prediction of Liquid Loading in Gas Wells with an Inclined Section显示文摘The ability to predict liquid loading in horizontal gas wells is of great importance for determining the time of drainage and optimizing the related production technology.In the present work,we describe the outcomes of experiments conducted using air-water mixtures in a horizontal well.The results show that the configuration with an inclined section is the most susceptible to liquid loading.Laboratory experiments in an inclined pipe were also conducted to analyze the variation of the critical gas flow rate under different angles,pressure and liquid volume(taking the equal liquid volume at inlet and outlet as the criterion for judging on the critical state).According to these results,the related angle of the inclined section ranges from 45°to 60°.Finally,a modified approach based on the Belfroid model has been used to predict the critical gas flow rate for the inclined section.After comparison with field data,this modified model shows an accuracy of 96%,indicating that it has better performances with respect to other models used in the past to predict liquid loading. | Mengna Liao Ruiquan Liao Jie Liu Shuangquan Liu Li Li Xiuwu Wang Yang Cheng | 2019 | Fluid Dynamics & Materials Processing2019，15，5： | 1 |
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