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71篇 您的检索式:作者名="Linfei"
    题名 作者 年代 出处 被引量
1Aromatization 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 2017Journal of Energy Chemistry2017,26,4:8
2Redox-responsive polymer prodrug/AgNPs hybrid nanoparticles for drug delivery显示文摘A drug carrier system of the hybrid nanoparticles based on the redox-responsive P[(2-((2-((camptothecin)-oxy)ethyl)disulfanyl)ethylmethacrylate)-co-(2-(D-galactose)methylmethacryl-ate)](P(MACPTS-co-MAGP)) and AgNPs is developed to deliver the anti-cancer drug camptothecin(CPT) and monitor the drug release by the recovery of the fluorescence of CPT. CPT is linked to the polymer sidechains via a redox-responsive disulfide bond, attaching on the surface of AgNPs and leading to the quenching of CPT fluorescence( 'off' state) due to the nanoparticle surface energy transfer(NSET) effect.Upon the exposure to glutathione(GSH), the disulfide bond is cleaved to release CPT, resulting in the recovery of the fluorescence of CPT('on' state). The system offers a platform to track the CPT delivery and releasing in realLiang Qiu Linfei Zhao Chengfen Xing Yong Zhan 2018Chinese Chemical Letters2018,29,2:6
3Association of three single nucleotide polymorphisms of ESR1 with breast cancer susceptibility:a meta-analysis显示文摘Expression of estrogen receptors is correlated with breast cancer risk,but inconsistent results have been reported.To clarify potential estrogen receptor(ESR)-related breast cancer risk,we analyzed genetic variants of ESR1 in association with breast cancer susceptibility.We performed a meta-analysis to investigate the association between rs2234693,rs1801132,and rs2046210(single nucleotide polymorphisms of ESR1),and breast cancer risk.Our analysis included 44 case-control studies.For rs2234693,the CC genotype had a higher risk of breast cancer compared to the TT or CT genotype.For rs2046210,the AA,GA,or GA + GG genotype had a much higher risk compared to the GG genotype.No significant association was found for the rs 1801132 polymorphism with breast cancer risk.This meta-analysis demonstrates association between the rs2234693 and rs2046210 polymorphisms of ESR1 and breast cancer risk.The correlation strength between rs2234693 and breast cancer susceptibility differs in subgroup assessment by ethnicity.Xu Hu Linfei Jiang Chenhui Tang Yuehong Ju Li Jiu Yongyue Wei Li Guo Yang Zhao 2017The Journal of Biomedical Research2017,31,3:4
4The 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 2012Geodesy and Geodynamics2012,3,4:4
5The 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-41Guozhi Jia Chunmu Guo Wei Wang Xuefeng Bai Xiaomeng Wei Xiaofang Su Tong Li Linfei Xiao Wei Wu 2021Frontiers of Chemical Science and Engineering2021,15,5:4
62020 roadmap on two-dimensional materials for energy storage and conversion显示文摘Energy storage and conversion have attained significant intere st owing to its important applications that reduce CO2 emission through employing green energy.Some promising technologies are included metalair batteries,metal-sulfur batteries,metal-ion batteries,electrochemical capacitors,etc.Here,metal elements are involved with lithium,sodium,and magnesium.For these devices,electrode materials are of importance to obtain high performance.Two-dimensional(2 D) materials are a large kind of layered structured materials with promising future as energy storage materials,which include graphene,black phosporu s,MXenes,covalent organic frameworks(COFs),2 D oxides,2 D chalcogenides,and others.Great progress has been achieved to go ahead for 2 D materials in energy storage and conversion.More researchers will join in this research field.Under the background,it has motivated us to contribute with a roadmap on ’two-dimensional materials for energy storage and conversion.Baolin Xu Shihan Qi Mengmeng Jin Xiaoyi Cai Linfei Lai Zhouting Sun Xiaogang Han Zifeng Lin Hui Shao Peng Peng Zhonghua Xiang Johan E.ten Elshof Rou Tan Chen Liu Zhaoxi Zhang Xiaochuan Duan Jianmin Ma 2019Chinese Chemical Letters2019,30,12:2
7Retrieving 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 2015Journal of Earth Science2015,26,4:2
8A subunit vaccine based on rH-NS induces protection against Mycobacterium tuberculosis infection by inducing the Thl immune response and activating macrophaqes显示文摘Yuan Liu Suting Chen Bowen Pan Zhu Guan Zhenjun Yang Linfei Duan Hong Cai 2016Acta Biochimica et Biophysica Sinica2016,48,10:2
9Shallow 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 2013Journal of Ocean University of China2013,12,3:2
10Carbon dioxide adduct from polypropylene glycol grafted polyethyleneimine as a climate-friendly blowing agent for polyurethane foams 显示文摘LONG Yuanzhu ZHENG Linfei XIE Xingyi 2014Polymer2014,55,:1
11Novel acidic ionic liquids mediated zinc chloride: Highly effective catalysts for the Beckmann rearrangement 显示文摘Liu Xiaofei Xiao Linfei Wu Hugjihu 2009Catalysis Communications2009,10,:1
12Immobilized Ionic Liquid/Zinc Chloride: Heterogeneous Catalyst for Synthesis of Cyclic Carbonates from Carbon Dioxide and Epoxides 显示文摘Xiao Linfei Li Fuwei Peng Jiajian 2006J MolCatalA Chem2006,253,12:1
13Existence and stability of periodic solution of a Lotka–Volterra predator–prey model with state dependent impulsive effects显示文摘Linfei Nie Jigen Peng Zhidong Teng Lin Hu 2008Journal of Computational and Applied Mathematics2008,,2:1
14Existence and stability of periodic solution of a predator–prey model with state-dependent impulsive effects显示文摘Linfei Nie Zhidong Teng Lin Hu Jigen Peng 2008Mathematics and Computers in Simulation2008,,7:1
15Numb regulates vesicular docking for homotypic fusion of early endosomes via membrane recruitment of Monlb显示文摘Ximing Shao Yi Liu Qian Yu Zhihao Ding Wenyu Qian Lei Zhang Jianchao Zhang Nan Jiang Linfei Gui Zhiheng Xu Yang Hong Yifan Ma Yanjie Wei Xiaoqing Liu Changan Jiang Minyan Zhu Hongchang Li Huashun Li 2016Cell Research2016,26,5:1
16Study 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 2008Plasma Science and Tecnology2008,10,6:1
17Optical image encryption based on fractional wavelet transform 显示文摘CHEN Linfei ZHAO Daomu 2005Optics Communications (S0030-4018)2005,254,46:1
18Multi-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 2012Journal of Physics: Condensed Matter2012,,:1
19Application of Fractional Fourier Transform on Spatial Filtering显示文摘CHEN Linfei ZHAO Daomu 2006Optics2006,,117:1
20Syntheses, properties and electrochemical activity of carbon microtubes modified with amino groups 显示文摘Xiaofeng Wang Xiaoqing Liu Linfei Lai etal 2008Advanced Functional Materials2008,,18:1
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