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| 1 | Finite-Time Neural Funnel Control for Motor Servo Systems with Unknown Input Constraint显示文摘In this paper, a finite-time neural funnel control(FTNFC) scheme is proposed for motor servo systems with unknown input constraint. To deal with the non-smooth input saturation constraint problem, a smooth non-affine function of the control input signal is employed to approximate the saturation constraint, which is further transformed into an affine form according to the mean-value theorem. A fast terminal sliding mode manifold is constructed by using a novel funnel error variable to force the tracking error falling into a prescribe boundary within a finite time. Then, a simple sigmoid neural network is utilized to approximate the unknown system nonlinearity including the saturation.Different from the prescribed performance control(PPC), the proposed finite-time neural funnel control avoids using the inverse transformed function in the controller design, and could guarantee the prescribed tracking performance without knowing the saturation bounds in prior. The effectiveness and superior performance of the proposed method are verified by comparative simulation results. | CHEN Qiang TANG Xiaoqing NAN Yurong REN Xuemei | 2017 | Journal of Systems Science & Complexity2017，30，3： | 9 |
| 2 | Cellulose structure and lignin distribution in normal and compression wood of the Maidenhair tree(Ginkgo biloba L.)显示文摘We studied in detail the mean micro fibril angle and the width of cellulose crystals from the pith to the bark of a 15-year-old Maidenhair tree(Ginkgo biloba L.). The orientation of cellulose micro fibrils with respect to the cell axis and the width and length of cellulose crystallites were determined using Xray diffraction. Raman microscopy was used to compare the lignin distribution in the cell wall of normal/opposite and compression wood, which was found near the pith. Ginkgo biloba showed a relatively large mean micro fibril angle,varying between 19° and 39° in the S2 layer, and the average width of cellulose crystallites was 3.1–3.2 nm. Mild compression wood without any intercellular spaces or helical cavities was observed near the pith. Slit-like bordered pit openings and a heavily lignified S2 L layer con firmed the presence of compression wood. Ginkgo biloba showed typical features present in the juvenile wood of conifers. The micro fibril angle remained large over the 14 annual rings. The entire stem disc,with a diameter of 18 cm, was considered to consist of juvenile wood. The properties of juvenile and compression wood as well as the cellulose orientation and crystalline width indicate that the wood formation of G. biloba is similar to that of modern conifers. | Seppo Andersson Yurong Wang Raili P?nni Tuomas H?nninen Marko Mononen Haiqing Ren Ritva Serimaa Pekka Saranp?? | 2015 | Journal of Integrative Plant Biology2015，57，4： | 5 |
| 3 | Effect of impregnation methods on sorbents made from lignite for desulfurization at middle temperature显示文摘With lignite after vacuum drying as the raw material,a series of Zn-based sorbents were prepared by static impregnation,ultrasonic-assisted impregnation,bubbling-assisted impregnation and high-pressure impregnation.The physical properties and the desulfurization performances of Zn-based sorbents were studied systematically by XRD,BET,AAS characterization techniques and the fixed-bed desulfurization evaluation apparatus.The sorbents obtained by high-pressure impregnation method have a larger specific surface area,pore volume and pore diameter comparing with other methods,which is conducive to the sulfidation reaction of hydrogen sulfide gas in the sorbent.The effects of pressure during the high-pressure impregnation and concentration of Zn(NO3)2 precursor solution on the sorbents properties and desulfurization behavior were investigated.The higher the impregnation pressure and the concentration of impregnation solution are,the greater the amount of the active components are uploaded.However,overhigh impregnation pressure can cause collapse and blocking of the carrier pore.The optimal operating condition of high-pressure impregnation method for preparing the sorbents was the impregnation pressure of 20 atm and the solution concentration of 41%.Under that condition,the sorbent had the best desulfurization ability with a sulfur capacity of 13.94 gS/100 gsorbent and a breakthrough time of 54 h.Its desulfurization precision and efficiency of removing H2S before sorbent breakthrough from the middle temperature gases of 400℃ can reach<5 ppm and>99%,respectively.Sorbents could be regenerated under the condition of 1 vol%O2,20 vol% H2O,0.5 vol% NH3,and N2balance gas.The regenerated sorbent could be used for repeated absorption of H2S with a slight decrease in desulfurization effect. | Yurong Dong Xiurong Ren Meijun Wang Qiang He Liping Chang Weiren Bao | 2013 | Journal of Energy Chemistry2013，22，5： | 3 |
| 4 | Stannous oxalate: An efficient catalyst for poly(trimethylene terephthalate) synthesis显示文摘A complete study on the catalytic activity of stannous oxalate for poly(trimethylene terephthalate) (PTT) synthesis via esterification method is carried out by comparison to the well known catalysts (tetrabutyl titanate (TBT), dibutyltin oxide (Bu2SnO), and stannous octoate (SOC)). Their catalytic activity in the esterification process is monitored by measuring the amount of water generated, while intrinsic viscosity (IV) and content of terminal carboxyl groups (CTCG) are used as the index in the polycondensation process. Stannous oxalate shows higher activity than the other catalysts. Decrease in reaction time and improvements in PTT property are observed. The higher catalytic activity of stannous oxalate is attributed to its chelate molecular structure. | JIA ShuYong REN YuRong ZHANG Dan HU Jing ZENG Yi WANG GongYing | 2008 | Science China Chemistry2008，51，3： | 2 |
| 5 | Structurally tunable characteristics of ionic liquids for optimizing lithium plating/stripping via electrolyte engineering显示文摘Electrolyte chemistry offers the opportunity to regulate the solid electrolyte interphase(SEI) and Li^(+)solvation,which is considered to be crucial to the growth of lithium crystals for safe lithium metal batteries(LMBs).Structurally tunable characteristics of ionic liquids(ILs) from anion type,cationic substituent chain length and cationic substituents,will contribute this field.Here,we explore the influence mechanism of imidazole-based ILs as electrolyte additives on Li+solvation and the formation of SEI.ILs can participate into the formation of efficient SEI,together with cathode electrolyte interphase(CEI).Moreover,ILs can also regulate the sheath structure of Li^(+)solvation,to fasten the kinetics of Li.Furthermore,the imidazole-based cations with long alkyl chain can form an electrostatic shield around newly formed Li nucleus,and suppress further Li plating at this site.Under the optimized condition,the 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide([OMIm]TFSI) additive shows the best ability to enhance the electrochemical performance,endowing the Li||Li symmetric cell with a stable life(over800 h) at 0.5 mA cm^(-2) and the Li||LiNi_(0.6)Mn_(0.2)Co_(0.2)O_(2)(NMC622) full cell with a high capacity of 141.7 mAh g^(-1) after 200 cycles at 0.5 C. | Shihan Qi Jiandong Liu Jian He Huaping Wang Mingguang Wu Daxiong Wu Junda Huang Fang Li Xin Li Yurong Ren Jianmin Ma | 2021 | Journal of Energy Chemistry2021，30，12： | 2 |
| 6 | Effect of high - pres- sure impregnation on structure variation and desulfurization prop- erty of a Zn - based sorbent prepared using lignite as a support 显示文摘 | Ren Xiurong He Qiang Dong Yurong | 2014 | Energy & Fuels2014，28，78： | 1 |
| 7 | Progress on genetic and genomic research for enhanced oil content and quality in peanut显示文摘 | Boshou LIAO Yong LEI Li HUANG Silong CHEN Xiaoping REN Liying YAN Yurong LI Dongxin HUAI Xiaojing ZHOU Liyun WAN Yuning CHEN Wei HUA Huifang JIANG | 2016 | Oil Crop Science2016，1，1： | 1 |
| 8 | Diethyl phenylphosphonite contributing to solid electrolyte interphase and cathode electrolyte interphase for lithium metal batteries显示文摘Lithium metal batteries have obtained increasing interest due to their high specific capacity.Nonetheless,the growth of lithium dendrites brings safety risks to batteries and further deteriorates the performance.Herein,we explore diethyl phenylphosphonite(DEPP) as the electrolyte additive to alleviate this problem.DEPP can be preferentially decomposed than carbonate solvents to form the stable interface between electrolyte and lithium anode for inhibiting the dendrite growth.As expected,the symmetrical LiIILi cells could achieve a stable cycling performance with 200 h at 1 mA cm^(-2).Moreover,DEPP can be preferentially oxidized on the surface of lithium cobalt oxides(LiCoO_(2)) to form a dense cathode electrolyte interphase(CEI) film for suppressing the continuous oxidative decomposition of the electrolyte and eliminating the adverse effects of HF on the battery.This endows LiCoO_(2) IILi full battery with the enhanced cycling and rate performance. | Chunxia Miao Shihan Qi Kang Liang Yanli Qi Junda Huang Mingguang Wu Hongshun Zhao Jiandong Liu Yurong Ren Jianmin Ma | 2021 | Journal of Energy Chemistry2021，30，12： | 1 |
| 9 | Peroxiredoxin 1 is a tumor-associated antigen in esophageal squamouscell carcinoma显示文摘 | Pengfei Ren Hua Ye Liping Dai Mei Liu Xinxin Liu Yurong Chai Qing Shao Yang Li Ningjing Lei Bo Peng Wu Yao Jianying Zhang | 2013 | Oncology Reports2013，，5： | 1 |
| 10 | A Cloud-Fog Enabled and Privacy-Preserving IoT Data Market Platform Based on Blockchain显示文摘The dynamic landscape of the Internet of Things(IoT)is set to revolutionize the pace of interaction among entities,ushering in a proliferation of applications characterized by heightened quality and diversity.Among the pivotal applications within the realm of IoT,as a significant example,the Smart Grid(SG)evolves into intricate networks of energy deployment marked by data integration.This evolution concurrently entails data interchange with other IoT entities.However,there are also several challenges including data-sharing overheads and the intricate establishment of trusted centers in the IoT ecosystem.In this paper,we introduce a hierarchical secure data-sharing platform empowered by cloud-fog integration.Furthermore,we propose a novel non-interactive zero-knowledge proof-based group authentication and key agreement protocol that supports one-to-many sharing sets of IoT data,especially SG data.The security formal verification tool shows that the proposed scheme can achieve mutual authentication and secure data sharing while protecting the privacy of data providers.Compared with previous IoT data sharing schemes,the proposed scheme has advantages in both computational and transmission efficiency,and has more superiority with the increasing volume of shared data or increasing number of participants. | Yurong Luo Wei You Chao Shang Xiongpeng Ren Jin Cao Hui Li | 2024 | Computer Modeling in Engineering & Sciences2024，139，5： | 0 |
| 11 | Research progress in failure mechanisms and electrolyte modification of high-voltage nickel-rich layered oxide-based lithium metal batteries显示文摘High-voltage nickel(Ni)-rich layered oxide-based lithium metal batteries(LMBs)exhibit a great potential in advanced batteries due to the ultra-high energy density.However,it is still necessary to deal with the challenges in poor cyclic and thermal stability before realizing practical application where cycling life is considered.Among many improved strategies,mechanical and chemical stability for the electrode electrolyte interface plays a key role in addressing these challenges.Therefore,extensive effort has been made to address the challenges of electrode-electrolyte interface.In this progress,the failure mechanism of Ni-rich cathode,lithium metal anode and electrolytes are reviewed,and the latest breakthrough in stabilizing electrode-electrolyte interface is also summarized.Finally,the challenges and future research directions of Ni-rich LMBs are put forward. | Jiandong Liu Xinhong Hu Shihan Qi Yurong Ren Yong Li Jianmin Ma | 2024 | InfoMat2024，6，2： | 0 |
| 12 | Research progress on Na_(3)V_(2)(PO_(4))_(2)F_(3)-based cathode materials for sodium-ion batteries显示文摘Sodium-ion batteries(SIBs)have received significant attention in large-scale energy storage due to their low cost and abundant resources.To obtain high-performance SIBs,many intensive studies about electrode materials have been carried out,especially the cathode material.As various types of cathode material for SIBs,a 3D open framework structural Na_(3)V_(2)(PO_(4))_(2)F_(3)(NVPF)with Na superionic conductor(NASICON)structure is a promising cathode material owing to its high operating potential and high energy density.However,its electrochemical properties are severely limited by the poor electronic conductivity due to the insulated[PO_(4)]tetrahedral unit.In this review,the challenges and strategies for NVPF are presented,and the synthetic strategy for NVPF is also analyzed in detail.Furthermore,recent developments of modification research to enhance their electrochemical performance are discussed,including designing the crystal structure,adjusting the electrode structure,and optimizing the electrolyte components.Finally,further research and application for future development of NVPF are prospected. | Kang Liang Daxiong Wu Yurong Ren Xiaobing Huang Jianmin Ma | 2023 | Chinese Chemical Letters2023，34，6： | 0 |
| 13 | Quasi-solid electrolyte membranes with percolated metal–organic frameworks for practical lithium-metal batteries显示文摘High-energy Li-metal batteries (LMBs) suffer from short cycle life and safety issues due to severe parasitic reactions and dendrite growth of Li metal anode (LMA) in liquid electrolytes [1–3].It is generally believed that replacing liquid electrolytes with solidstate electrolytes (SSEs) would be a feasible approach for practical LMBs [4,5]. Conventional SSEs including ceramic and polymer electrolytes have been studied for decades. | Zijian Li Qianqian Liu Lina Gao Yifei Xu Xueqian Kong Yang Luo Huaxin Peng Yurong Ren Hao Bin Wu | 2021 | Journal of Energy Chemistry2021，30，1： | 0 |
| 14 | Multi-Scale Numerical Simulation of Flow,Heat and Mass Transfer Behaviors in Dense Gas-Solid Flows:A Brief Review显示文摘Dense gas-solid flows are very common in actual production and industrial fields,so it is significant to understand their hydrodynamic characteristics and heat and mass transfer behaviors.This article provides a brief review of multi-scale numerical simulation of flow,heat and mass transfer behaviors in dense gas-solid flows.It describes multiscale models(direct numerical simulation,discrete particle model,and two-fluid model)and the results of related research.Finally,it discusses possible future developments in research on the flow,heat and mass transfer characteristics of dense gas-solid two-phase flows. | HE Yurong REN Anxing TANG Tianqi WANG Tianyu | 2022 | Journal of Thermal Science2022，31，3： | 0 |
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