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| 1 | Aromatization over nanosized Ga-containing ZSM-5 zeolites prepared by different methods:Effect of acidity of active Ga species on the catalytic performance显示文摘Nanosized Ga-containing ZSM-5 zeolites were prepared via isomorphous substitution and impregnation followed by characterized using various techniques. The catalytic performance of the zeolites for the aromatization of 1-hexene was investigated. The results indicate that isomorphous substitution promotes the incorporation of Ga heteroatoms into the framework along with the formation of extra-framework GaO^+species([GaO^+]a) that have stronger interactions with the negative potential of the framework. In addition, based on the Py-IR results and catalytic performance, the [GaO^+]aspecies with stronger Lewis acid sites produced a better synergism with moderate Br?nsted acid sites and thus improved the selectivity to aromatic compounds. However, the impregnation results in the formation of Ga_2O_3 phase and small amounts of GaO^+species that are mainly located on the external surface([GaO^+]~b), which contribute to weaker Lewis acid sites due to weaker interactions with the zeolite framework. During 1-hexene aromatization, the nanosized Ga isomorphously substituted ZSM-5 zeolite samples(Gax-NZ5) exhibited better catalytic performance compared to the impregnated samples, and the highest aromatic yield(i.e.,65.4 wt%) was achieved over the Ga4.2-NZ5 sample, which contained with the highest Ga content. | Yujun Fang Xiaofang Su Xuefeng Bai Wei Wu Gaoliang Wang Linfei Xiao Anran Yu | 2017 | Journal of Energy Chemistry2017，26，4： | 8 |
| 2 | The principle of measuring unusual change of underground mass by optical astrometric instrument显示文摘Optical observations from a ground-based astrometric instrument provide a unique set of data sensitive to variations of local plumb line, which represent the change of local gravitational field on the ground. The local gravitational change could be caused by density variation or movement of underground mass in addition to tidal action. Earthquake was found to be related with gravitational change. A seismic zone could have abnormal underground material density, causing the variation of plume line on the ground. In this frame, the astrometric telescope can measure the variation of local plumb line by observing the local astronomical longitudes and latitudes from stars in the Hipparcos catalog. In this study, we estimate the deflection angle of the plumb line on a ground site, and give a relation between the angle, abnormal mass and site distance (depth and horizontal distance). Then we derive the abnormality of underground material density using the plumb lines measured at different sites, and study the earthquake gestation, development and occurrence. Using the deflection angles of plumb lines observed at two sites, we give a method to calculate the mass and the center of gravity of underground materials. We also estimate the abnormal masses of latent seismic zones with different energy, using thermodynamic relations, and introduce a new optical astrometric instrument we had developed. | Wang Jiancheng Chen Linfei Yang Lei Cheng Xiangming Su Jie Li Binghua Mao Wei Tie Qiongxian | 2012 | Geodesy and Geodynamics2012，3，4： | 4 |
| 3 | The synergic effects of highly selective bimetallic Pt-Pd/SAPO-41 catalysts for the n-hexadecane hydroisomerization显示文摘The hydroisomerization of n-hexadecane over Pt-Pd bimetallic catalysts is an effective way to produce clean fuel oil.This work reports a useful preparation method of bimetallic bifunctional catalysts by a co-impregnation or sequential impregnation process.Furthermore,monometallic catalysts with loading either Pt or Pd are also prepared for comparison.The effects of the metal species and impregnation order on the characteristics and catalytic performance of the catalysts are investigated.The catalytic test results indicate that the maximum iso-hexadecane yield over different catalysts increases as follows:Pt/silicoaluminophosphate SAPO-41 | Guozhi Jia Chunmu Guo Wei Wang Xuefeng Bai Xiaomeng Wei Xiaofang Su Tong Li Linfei Xiao Wei Wu | 2021 | Frontiers of Chemical Science and Engineering2021，15，5： | 4 |
| 4 | Retrieving Drill Bit Seismic Signals Using Surface Seismometers显示文摘Seismic while drilling(SWD) is an emerging borehole seismic imaging technique that uses the downhole drill-bit vibrations as seismic source.Without interrupting drilling,SWD technique can make near-real-time images of the rock formations ahead of the bit and optimize drilling operation,with reduction of costs and the risk of drilling.However,the signal to noise ratio(SNR) of surface SWD-data is severely low for the surface acquisition of SWD data.Here,we propose a new method to retrieve the drill-bit signal from the surface data recorded by an array of broadband seismometers.Taking advantages of wavefield analysis,different types of noises are identified and removed from the surface SWD-data,resulting in the significant improvement of SNR.We also optimally synthesize seismic response of the bit source,using a statistical cross-coherence analysis to further improve the SNR and retrieve both the drill-bit direct arrivals and reflections which are then used to establish a reverse vertical seismic profile(RVSP) data set for the continuous drilling depth.The subsurface images derived from these data compare well with the corresponding images of the three-dimension surface seismic survey cross the well. | Linfei Wang Huaishan Liu Siyou Tong Yanxin Yin Lei Xing Zhihui Zou Xiugang Xu | 2015 | Journal of Earth Science2015，26，4： | 2 |
| 5 | Shallow Water Body Data Processing Based on the Seismic Oceanography显示文摘Physical properties of sea water,such as salinity,temperature,density and acoustic velocity,could be demarcated through degradation of energy caused by water absorption,attenuation and other factors.To overcome the challenging difficulties in the quick monitoring of these physical properties,we have explored the high resolution marine seismic survey to instantly characterize them.Based on the unique wavefield propagating in the sea water,we have developed a new approach to suppress the noise caused by the shallow sea water disturbance and obtain useful information for estimating the sea water structure.This approach improves seismic data with high signal-to-noise ratio and resolution.The seismic reflection imaging can map the sea water structure acoustically.Combined with the knowledge of local water body structure profile over years,the instant model for predicting the sea water properties could be built using the seismic data acquired from the specially designed high precision marine seismic acquisition.This model can also be updated with instant observation and the complete data processing system.The present study has the potential value to many applications,such as 3D sea water monitoring,engineering evaluation,geological disaster assessment and environmental assessment. | LIU Huaishan HU Yi YIN Yanxin WANG Linfei TONG Siyou MA Hai | 2013 | Journal of Ocean University of China2013，12，3： | 2 |
| 6 | Study of propagation characteristics of plasma surface wave in the medium tube显示文摘 | WANG Shiqing YAN Zelin LI Wenzhong LIU Jian XU Linfei | 2008 | Plasma Science and Tecnology2008，10，6： | 1 |
| 7 | Multi-oriented moiré superstructures of graphene on Ir(111): experimental observations and theoretical models显示文摘 | Lei Meng Rongting Wu Lizhi Zhang Linfei Li Shixuan Du Yeliang Wang H-J Gao | 2012 | Journal of Physics: Condensed Matter2012，，： | 1 |
| 8 | Syntheses, properties and electrochemical activity of carbon microtubes modified with amino groups 显示文摘 | Xiaofeng Wang Xiaoqing Liu Linfei Lai etal | 2008 | Advanced Functional Materials2008，，18： | 1 |
| 9 | Phase Characteristic Analysis of Continuous Depth Air-Gun Source Wavelet显示文摘Air guns are important sources for marine seismic exploration. Far-field wavelet of air gun arrays, as a necessary parameter for pre-stack processing and source models, plays an important role during marine seismic data processing and interpretation. When an air gun fires, it generates a series of air bubbles. Similar to onshore seismic exploration, the water forms a plastic fluid near the bubble; the farther the air gun is located from the measurement, the more steady and more accurately represented the wavelet will be. In practice, hydrophones should be placed more than 100 m from the air gun; however, traditional seismic cables cannot meet this requirement. On the other hand, vertical cables provide a viable solution to this problem. This study uses a vertical cable to receive wavelets from 38 air guns and data are collected offshore Southeast Qiong, where the water depth is over 1000 m. In this study, the wavelets measured using this technique coincide very well with the simulated wavelets and can therefore represent the real shape of the wavelets. This experiment fills a technology gap in China. | XING Lei LIU Huaishan ZHENG Xilai LIU Xueqin ZHANG Jin WANG Linfei ZOU Zhihui XU Yiming | 2016 | Journal of Ocean University of China2016，15，5： | 1 |
| 10 | Novel CeO2 yolk-shell structures loaded with tiny Au nanoparti- cles for superior catalytic reduction of p-nitrophenol 显示文摘 | Fan Congmin Zhang Linfei Wang Shasha | 2012 | Nanoscale2012，4，21： | 1 |
| 11 | Construction of 2D Atomic Crystals on Transition Metal Surfaces: Graphene, Silicene, and Hafnene显示文摘 | Yi Pan Lizhi Zhang Li Huang Linfei Li Lei Meng Min Gao Qing Huan Xiao Lin Yeliang Wang Shixuan Du Hans‐Joachim Freund Hong‐Jun Gao | 2014 | Small2014，，： | 1 |
| 12 | Functional divergence of oligoadenylate synthetase 1(OAS1)proteins in Tetrapods显示文摘OASs play critical roles in immune response against virus infection by polymerizing ATP into 2-5 As,which initiate the classical OAS/RNase L pathway and induce degradation of viral RNA.OAS members are functionally diverged in four known innate immune pathways(OAS/RNase L,OASL/IRF7,OASL/RIG-I,and OASL/cGAS),but how they functionally diverged is unclear.Here,we focus on evolutionary patterns and explore the link between evolutionary processes and functional divergence of Tetrapod OAS1.We show that Palaeognathae and Primate OAS1 genes are conserved in genomic and protein structures but differ in function.The former(i.e.,ostrich)efficiently synthesized long 2-5 A and activated RNase L,while the latter(i.e.,human)synthesized short 2-5 A and did not activate RNase L.We predicted and verified that two in-frame indels and one positively selected site in the active site pocket contributed to the functional divergence of Palaeognathae and Primate OAS1.Moreover,we discovered and validated that an in-frame indel in the C-terminus of Palaeognathae OAS1 affected the binding affinity of ds RNA and enzymatic activity,and contributed to the functional divergence of Palaeognathae OAS1 proteins.Our findings unravel the molecular mechanism for functional divergence and give insights into the emergence of novel functions in Tetrapod OAS1. | Xiaoxue Wang Jiaxiang Hu Linfei Song Enguang Rong Chenghuai Yang Xiaoyun Chen Juan Pu Honglei Sun Chuze Gao David WBurt Jinhua Liu Ning Li Yinhua Huang | 2022 | Science China(Life Sciences)2022，65，7： | 1 |
| 13 | Preparat ion of supercapacitor electrodes through selection of graphene surface functionalities显示文摘 | Lai Linfei Yang Huanping Wang Liang | 2012 | ACSNano2012，6，： | 1 |
| 14 | A Unified Time Scale Intelligent Control Algorithm for Microgrid Based on Extreme Dynamic Programming显示文摘Benefiting from the progress of power electronics technology,distributed generation technology is developing rapidly.Since microgrids cannot rely on traditional multi-time scale control strategies to ensure the high-quality frequency stability control and economic dispatch in the same time scale,this paper proposes an extreme dynamic programming algorithm.The proposed algorithm takes an adaptive dynamic programming algorithm as the framework,an extreme learning machine as a kernel of the evaluation module,a model module,an implementation module and a new prediction module.The resulting unified time scale intelligent control algorithm better realizes the combined functions of“droop control+automatic generation control+economic dispatch”in the traditional opermode.Finally,in order to verify the effectiveness of the proposed algorithm,a microgrid model of 8 nodes is simulated.The results confirm the feasibility and validity of the proposed extreme dynamic programming algorithm. | Junbin Chen Tao Yu Linfei Yin Jianlin Tang Hanqi Wang | 2020 | CSEE Journal of Power and Energy Systems2020，6，3： | 0 |
| 15 | Effects of childhood trauma on aggressive behaviors andhippocampal function:the modulation of COMT haplotypes显示文摘Background:Aggression is a commonly hostile behavior linked to the hippocampal activity.Childhood trauma(CT)exposure has been associated with altered sensitization of the hypothalamic-pituitary-adrenal(HPA)axis and hippocampal volumewhich could increase violent aggressive behaviors.Additionally,Catechol-O-methyltransferase(COMT),the major dopamine metabolism enzyme,is impli-cated in stress responsivity,including aggression.Hence,CT exposure may affect aggression through the effect on the hippocampal function,which might also be modulated by the COMT variations.Objectives:This study examined whether both CT and haplotypes of COMT moderate hippocampal function and thus affect human aggressive behavior.Methods:We obtained bilateral hippocampal functional connectivity maps using resting state functional magnetic resonance imag-ing(MRI)data.COMT haplotype estimation was performed using Haploview 4.2 and PHASE 2.1.Then we constructed a moderated mediation model to study the effect of the CTQ×COMT on aggressive behavior.Results:Three major haplotypes were generated from thirteen single nucleotide polymorphisms(SNPs)within the COMT gene and formed three haplotypes corresponding to high,medium,and low enzymatic activity of COMT.The results showed interactive re-lationships between the Childhood Trauma Questionnaire(CTQ)and COMT with respect to the functional connectivity(FC)of the bilateral hippocampus(HIP)-orbital frontal cortex(OFC).Specifically,CT experience predicted lower negative HIP-OFC coupling in the APS and HPS haplotypes corresponding to the medium and high enzymatic activity of COMT,but greater FC in the LPS haplotypes corresponding to the low enzymatic activity.We also observed a conditional mediation effect of the right HIP-OFC coupling in the link between COMT and aggressive behavior that was moderated by CT experience.Conclusions:These results suggest that CT and COMT have a combined effect on aggressive behavior through hippocampal function.This mediation analysis sheds light on the influence of childhood experience on aggressive behavior in different genetic backgrounds. | Chao Wang Linfei Zhu Wenyu Zheng Hanyuzhu Peng Jiaojian Wang Yue Cui Bing Liu Tianzi Jiang | 2023 | Psychoradiology2023，3，1： | 0 |
| 16 | Study of Panjin Wetlands Along Bohai Coast:(Ⅰ) the Information System of Wetlands Based on 3S Technique显示文摘Based on previous studies on Panjin wetlands along the coast of the Bohai Sea,this paper adopts RS,GIS and GPS tech-niques and establishes the information system for Panjin wetlands. The system involves many functions,such as identification and classification of wetlands,calculation of the area of wetlands and storage of the information of the wetland management. Moreover,our study indicates that remote sensing technique is a useful tool for great macrography,speediness and accuracy to carry out the extraction,analysis,management and handling of information together with geography information system,which has prospective applications in similar kinds of research. | WANG Tieliang ZHOU Linfei YANG Peiqi ZHAO Bo | 2008 | Journal of Ocean University of China2008，7，4： | 0 |
| 17 | The Research of Ecology-Oriented Reasonable Deployment of Water Resources at Shuangtaizi Estuary Wetland显示文摘Shuangtaizi estuary wetland, the largest natural conservation district in China, and one of the best preserved, largest ecological lands with the most complete vegetation types in the world, is located in Panjin city, Liaoning Province. In recent years, the degradation of Shuangtaizi estuary wetland is very serious. In order to rescue lives in the wetland and protect valuable natural resources, the information system of Shuangtaizi estuary wetland was built with '3S' technology, and the minimum, optimum, and maximum eco-environmental water requirements were calculated respectively. Furthermore, for restoring the ecological functions of wetland and preventing wetland degradation, the balance between supply and demand of water resource was analyzed , and an optimal allocation scheme of water resources was proposed based on three kinds of equilibrium. | LU Xiaofeng WANG Tieliang SU Fangli ZHOU Linfei LI Bo | 2011 | Journal of Ocean University of China2011，10，2： | 0 |
| 18 | Analyzing characteristics of signal transmission in drill string system显示文摘It is a key problem to retrieve the drill-bit signal for seismic while drilling(SWD).The conventional approach is to extract the drill-bit signal from the pilot sensors deployed on the top of the drill string.Therefore,it is essential to obtain the propagating mechanism of drill-bit signal in the drill string.Based on the algorithm of transfer matrix,this paper analyzed the propagating rules of drill-bit signals in periodic drill pipe and derived the transmission equation for the drill-bit signal in Bottom Hole Assembly(BHA).To overcome the disadvantage that output energy is bigger than input energy,this equation is modified with an important scale factor.According to this method,the signal propagating in the drill string system was modeling with the real parameters for the drilling.The results show that the frequency filtering of the drill string system has a little impact on the drill-bit signal and its energy become 80%of the raw energy. | Linfei Wang Shaojie Cheng Xuesheng Ge Jun Cao | 2021 | Earthquake Research Advances2021，1，S01： | 0 |
| 19 | Shallowing interfacial carrier trap in transition metal dichalcogenide heterostructures with interlayer hybridization显示文摘With the unique properties,layered transition metal dichalcogenide(TMD)and its heterostructures exhibit great potential for applications in electronics.The electrical performance,e.g.,contact barrier and resistance to electrodes,of TMD heterostructure devices can be significantly tailored by employing the functional layers,called interlayer engineering.At the interface between different TMD layers,the dangling-bond states normally exist and act as traps against charge carrier flow.In this study,we propose a technique to suppress such carrier trap that uses enhanced interlayer hybridization to saturate dangling-bond states,as demonstrated in a strongly interlayer-coupled monolayer-bilayer PtSe2 heterostructure.The hybridization between the unsaturated states and the interlayer electronic states of PtSe2 significantly reduces the depth of carrier traps at the interface,as corroborated by our scanning tunnelling spectroscopic measurements and density functional theory calculations.The suppressed interfacial trap demonstrates that interlayer saturation may offer an efficient way to relay the charge flow at the interface of TMD heterostructures.Thus,this technique provides an effective way for optimizing the interface contact,the crucial issue exists in two-dimensional electronic community. | Xu Wu Jingsi Qiao Liwei Liu Yan Shao Zhongliu Liu Linfei Li Zhili Zhu Cong Wang Zhixin Hu Wei Ji Yeliang Wang Hongjun Gao | 2021 | Nano Research2021，14，5： | 0 |
| 20 | Effect of dipole location on profile properties of symmetric surface plasmon polariton mode in Au/Al2O3/Au waveguide显示文摘这研究使用在 Al2O3 层嵌入使对称的表面电浆子电磁声子(SPP ) 激动的偶极子在 Au/Al2O3/Au 波导到的模式由使用有限差别的时间域(FDTD ) 调查它的侧面性质方法。激动的偶极子腐烂由于 100 nm 的薄 Al2O3 层的放射地直接的近地的联合到 SPP 模式。效果电并且磁场紧张侧面和腐烂长度被考虑了并且描绘。偶极子地点是一个重要因素在 Au/Al2O3/Au 波导影响对称的 SPP 模式的水平、垂直的侧面性质,这被发现。振幅电并且磁场紧张和 metal-insulatormetal (MIM ) 的波长 SPP 回声模式能被变化调节偶极子地点。水平、垂直的腐烂长度分别地是 19 和 24 nm。Au/Al2O3/Au 波导结构为设计 SPP 来源的实际应用是很有用的,这被期望。 | Gongli XIAO Xiang JI Linfei GAO Xingjun WANG Zhiping ZHOU | 2012 | Frontiers of Optoelectronics2012，5，1： | 0 |
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