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| 1 | Hierarchical pore structure of activated carbon fabricated by CO_2/microwave for volatile organic compounds adsorption显示文摘An activated carbon pore-expanding technique was achieved through innovative reactivation by CO_2/microwave.The original and modified activated carbons were characterized by nitrogen adsorption–desorption,scanning electron microscopy,transmission electron microcopy,and Fourier transform infrared spectroscopy.The mesopore volume increased from 0.122 cm^3·g^(-1) to 0.270 cm^3·g^(-1),and a hierarchical pore structure was formed.A gradual decrease in the phenolic hydroxyl and carboxyl groups on the surface of activated carbon enhanced the surface inertia of granular activated carbon(GAC).The toluene desorption rate of the modified sample increased by 8.81% compared with that of the original GAC.Adsorption isotherm fittings revealed that the Langmuir model was applicable for the original and modified activated carbons.The isosteric adsorption heat of toluene on the activated carbon decreased by approximately 50%,which endowed the modified sample with excellent stability in application.The modified samples showed an enhanced desorption performance of toluene,thereby opening a way to extend the cycle life and improve the economic performance of carbon adsorbent in practical engineering applications. | Wenjuan Qiu Kang Dou Ying Zhou Haifeng Huang Yinfei Chen Hanfeng Lu | 2018 | Chinese Journal of Chemical Engineering2018，26，1： | 16 |
| 2 | Application of Scanning Tunneling Microscopy in Electrocatalysis and Electrochemistry显示文摘Scanning tunneling microscopy(STM)has gained increasing attention in the field of electrocatalysis due to its ability to reveal electrocatalyst surface structures down to the atomic level in either ultra-high-vacuum(UHV)or harsh electrochemical conditions.The detailed knowledge of surface structures,surface electronic structures,surface active sites as well as the interaction between surface adsorbates and electrocatalysts is highly beneficial in the study of electrocatalytic mechanisms and for the rational design of electrocatalysts.Based on this,this review will discuss the application of STM in the characterization of electrocatalyst surfaces and the investigation of electrochemical interfaces between electrocatalyst surfaces and reactants.Based on different operating conditions,UHV-STM and STM in electrochemical environments(EC-STM)are discussed separately.This review will also present emerging techniques including high-speed EC-STM,scanning noise microscopy and tip-enhanced Raman spectroscopy. | Haifeng Feng Xun Xu Yi Du Shi Xue Dou | 2021 | Electrochemical Energy Reviews2021，4，2： | 2 |
| 3 | MoSwi6, an APSES family transcription factor, interacts with MoMps1 and is required for hyphal and conidial morphogenesis, appressorial function and pathogenicity of Magnaporthe oryzae显示文摘 | ZHONGQIANG QI QI WANG XIANYING DOU WEI WANG QIAN ZHAO RUILI LV HAIFENG ZHANG XIAOBO ZHENG PING WANG ZHENGGUANG ZHANG | 2012 | Molecular Plant Pathology2012，，7： | 2 |
| 4 | New antioxidant and antiglycation active triterpenoid saponins from the root bark of Aralia taibaiensis显示文摘 | Linlin Bi Xiangrong Tian Fang Dou Liangjian Hong Haifeng Tang Siwang Wang | 2011 | Fitoterapia2011，，1： | 1 |
| 5 | Static strength and crashworthiness analysis of a train cowcatcher at a running speed of 160 km/h显示文摘The cowcatcher is one of the unique devices at the front end of the train, which can remove obstacles on the track by crashing before the vehicle body to ensure the safety of the train. When a collision accident happens, the cowcatcher serves as the first energy-absorbing structure to dissipate and guide the collision energy. The design of the existing cowcatcher of multiple units generally focuses on the good ability to remove obstacles, while the secondary function, the crashworthiness of orderly deformation under collision, still needs further research. In this study, a finite element model of structural static load and collision analysis was established under standard EN 15227, with the cowcatcher for 160 km/h train as the prototype. Then the solution and simulation process was accomplished under the environment of ANSYS and LS-DYNA. The analysis results showed that the structural static strength of the current cowcatcher met the requirements of the standard EN 15227, and the longitudinal stiffness was evenly distributed. When removing the obstacles with low mass, the impact force was small and the structure would not produce obvious deformation;when removing the obstacles with large mass, the impact force was large and the shear fracture might occur at the connection of the cowcatcher. | Yanzhao Guo Lele Zhang Weiyuan Dou Yu Zhu Haifeng Zhang | 2023 | High-Speed Railway2023，1，4： | 0 |
| 6 | OFDM Simulation and Its Application in Mobile Communication显示文摘In recent years, with the rapid development of the economy, people rely more and more on mobile communication, and therefore greatly promoted the rapid development of modern mobile communications industry, efficient mobile communication system has gradually become a new generation the direction of development. This article describes the content of OFDM simulation and in mobile communications applications. This paper analyzes the principle of OFDM technology, establishes the simulation model of mobile communication system, writes the program code of the system, establishes the simulation model, analyzes the interference factors in the process of the mobile communication transmission, and completes the analysis of the simulation result through simulation. This paper also focuses on the realization of orthogonal frequency division multiplexing (OFDM) and the performance of sub-channels and other parameters and reduces the peak-to-average power ratio of OFDM systems. Finally, the application status and prospect of OFDM technology in the modern communication system are expounded. | Zhanyi Lu Zhixi Xie Haifeng Dou | 2018 | Signal and Information Processing2018，1，1： | 0 |
| 7 | Modeling detector response function of alpha particles for neutron depth profiling显示文摘The energy spreading of recorded ions is influenced by straggling,geometrical acceptance angles and detector energy resolution effects in neutron depth profiling(NDP)and a symmetric Gaussian function model was customarily applied before.In addition,the spectra of mono-energetic alpha particles show a well known asymmetric shape as well when measured by silicon detectors.This article presents a physical model predicting the observed energy spectrum of a sample ion with target nuclides in prearranged depths.It is expressed as the convolution of a Gaussian function with a left-hand double-exponential function.Experiment showed that the predicted ions spectrum derived from the asymmetric model matches the observed energy spectrum.Therefore,the model can be applied to produce matrix for inversion of NDP spectrum. | DOU HaiFeng LI RunDong XU JiaYun YUAN Shu TANG FengPing YANG Xin | 2014 | Science China(Technological Sciences)2014，57，1： | 0 |
| 8 | Fatigue Characterization on a Cast Aluminum Beam of a High-Speed Train Through Numerical Simulation and Experiments显示文摘The cast aluminum beam is a key structure for carrying the body-hung traction motor of a high-speed train;its fatigue property is fundamental for predicting the residual life and service mileage of the structure.To characterize the structural fatigue property,a finite element-based method is developed to compute the stress concentration factor,which is used to obtain the structural fatigue strength reduction factors.A full-scale fatigue test on the cast aluminum beam is designed and implemented for up to ten million cycles,and the corresponding finite element model of the beam is validated using the measured data of the gauges.The results show that the maximum stress concentration occurs at the fillet of the supporting seat,where the structural fatigue strength reduction factor is 2.45 and the calculated fatigue limit is 35.4 MPa.Moreover,no surface cracks are detected using the liquid penetrant test.Both the experimental and simulation results indicate that the cast aluminum beam can satisfy the service life requirements under the designed loading conditions. | Weiyuan Dou Lele Zhang Haifeng Chang Haifeng Zhang Changqing Liu | 2021 | Chinese Journal of Mechanical Engineering2021，34，5： | 0 |
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