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19篇 您的检索式:作者名="Xiangjun Fan"
    题名 作者 年代 出处 被引量
1Analysis of three echo-trainings of a rainstorm in the South China warm region显示文摘Zhiying DING Lei QIAN Xiangjun ZHAO Fan XIA 2018Frontiers of Earth Science2018,12,2:3
2Knockdown of Oct4 and Nanog expression inhibits the stemness of pancreatic cancer cells显示文摘Yuhua Lu Hui Zhu Haiyan Shan Junjie Lu Xu Chang Xiaohong Li Jingjing Lu Xiangjun Fan Shajun Zhu Yao Wang Qingsong Guo Lei Wang Yan Huang Mingyan Zhu Zhiwei Wang 2013Cancer Letters2013,,:3
3KOH-assisted aqueous synthesis of bimetallic metal-organic frameworks and their derived selenide composites for efficient lithium storage显示文摘To solve low efficiency,environmental pollution,and toxicity for synthesizing zeolitic imidazolate frameworks(ZIFs)in organic solvents,a KOH-assisted aqueous strategy is proposed to synthesize bimetallic ZIFs polyhedrons,which are used as precursors to prepare bimetallic selenide and N-doped carbon(NC)composites.Among them,Fe–Co–Se/NC retains the three-dimensional(3D)polyhedrons with mesoporous structure,and Fe–Co–Se nanoparticles are uniform in size and evenly distributed.When assessed as anode material for lithium-ion batteries,Fe–Co–Se/NC achieves an excellent initial specific capacity of 1165.9 m Ah·g^(-1)at 1.0 A·g^(-1),and the reversible capacity of Fe–Co–Se/NC anode is 1247.4 m Ah·g^(-1)after 550 cycles.It is attributed to that the uniform composite of bimetallic selenides and N-doped carbon can effectively tune redox active sites,the stable 3D structure of Fe–Co–Se/NCs guarantees the structural stability and wettability of the electrolyte,and the uniform distribution of Fe–Co–S nanoparticles in size esuppresses the volume expansion and accelerates the electrochemical reaction kinetics.Shuya Zhang Yanchun Xue Yutang Zhang Chengxing Zhu Xingmei Guo Fu Cao Xiangjun Zheng Qinghong Kong Junhao Zhang Tongxiang Fan 2023International Journal of Minerals,Metallurgy and Materials2023,30,4:2
4Timing for high lake levels of Qinghai Lake in the Qinghai-Tibetan Plateau since the Last Interglaciation based on quartz OSL dating显示文摘XiangJun Liu ZhongPing Lai QiShun Fan Hao Long YongJuan Sun 2009Quaternary Geochronology2009,,2:1
5Potentially functional genetic variants in microRNA processing genes and risk of HBV‐related hepatocellular carcinoma显示文摘Li Liu Jiaze An Jibin Liu Juan Wen Xiangjun Zhai Yao Liu Shandong Pan Jie Jiang Yang Wen Zheng Liu Yixin Zhang Jianguo Chen Jinliang Xing Guozhong Ji Hongbing Shen Zhibin Hu Zhining Fan 2013Mol Carcinog2013,,1:1
6The topology of moment-angle manifolds——on a conjecture of S. Gitler and S. López de Medrano显示文摘In this paper,we study the topology of moment-angle manifolds and prove a conjecture of S.Gitler and S.Lopez de Medrano concerned with the behavior of the moment-angle manifold under the surgery’cutting off a vertex’on a simple polytope.Let P be a simple polytope of dimension n with m facets and Pv be a poly tope obtained from P by cutting off one vertex v.Let Z=Z(P)and Zv=Z(Pv)be the corresponding moment-angle manifolds.S.Gitler and S.Lopez de Medrano conjectured that:Zv is diffeomorphic to δ[(Z(-D^n+m)×D^2]##^m-n/j=1(m-n/j)(S^j+2×S^m+n-j-1),and they proved the conjecture in the case m<3 n.In this paper we prove the conjecture in the general case.Liman Chen Feifei Fan Xiangjun Wang 2020Science China Mathematics2020,63,10:1
7INTERFACIAL REACTIONS OF METAL FILMS WITH AlN SUBSTRATE显示文摘INTERFACIALREACTIONSOFMETALFILMSWITHAlNSUBSTRATEHeXiangjun;TaoKun;FanYudian(DepartmentofMaterialsScienceandEngineering,Tsingh...He Xiangjun Tao Kun Fan Yudian (Department of Materials Science and Engineering, Tsinghua University, Beijing 100084) 1996中国有色金属学会会刊:英文版1996,6,2:1
8A low-energy ion spectrometer with half-space entrance for three-axis stabilized spacecraft显示文摘A low-energy ion spectrometer(LEIS) for use aboard three-axis stabilized spacecraft has been developed to measure ion energy per charge distribution in three-dimensional space with good energy-, angular-and temporal-resolutions. For the standard top-hat electrostatic analyzer used widely in space plasma detection, three-axis stabilized spacecraft makes it difficult to obtain complete coverage of all possible ion arrival directions. We have designed angular scanning deflectors supplementing to a cylindrically symmetric top-hat electrostatic analyzer to provide a half-space field of view as 360°×90°(–45°–+45°), and fabricated the LEIS flight model for detecting magnetospheric ions in geosynchronous orbit. The performance of this payload has been evaluated in detail by a series of simulation and environmental tests, and the payload has also been calibrated through laboratory experiments using a low-energy ion source. The results show that capabilities of the LEIS payload are in accordance with the requirements of a magnetospheric mission.HU RenXiang SHAN Xu YUAN GuangYuan WANG ShuWen ZHANG WeiHang QI Wei CAO Zhe LI YiRen CHEN ManMing YANG XiaoPing WANG Bo SHAO SiPei LI Feng ZHONG XiaoQing FAN Dan HAO XinJun FENG ChangQing SU ZhenPeng SHEN ChengLong LI Xin DAI GuYue QIU BingLin PAN ZongHao LIU Kai XU ChunKai LIU ShuBin AN Qi ZHANG TieLong WANG YuMing CHEN XiangJun 2019Science China(Technological Sciences)2019,62,6:1
9Consistent response of nematode communities to management of coniferous plantations显示文摘Background:Crop-tree thinning (CTT) is a forest management practice aiming at enhancing the growth of target trees in plantations by harvesting neighboring trees. Along with the positive effect on tree growth, thinning represents a disturbance, which likely affects belowground organisms and may feed back to stand productivity.However, the impact of CTT on the belowground food web is poorly understood. Since nematodes are species-rich and abundant belowground organisms, occupying a variety of trophic positions in soil food webs and being sensitive to disturbances, they serve as ecological indicators of ecosystem disturbance.Results:We studied the effect of CTT on the soil nematode community structure in pine (Pinus massoniana Lamb.),Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) and cypress (Cupressus funebris Endl.) plantations in the Sichuan Basin three years after applying CTT. Crop-tree thinning significantly increased the abundance of soil nematodes in each of the plantations. Moreover, CTT significantly increased the relative abundance of herbivorous nematodes in each of the plantations. Furthermore, CTT increased the proportion of stress tolerators (c-p 1)and enrichment opportunists (c-p 2) and reduced the maturity, structure and enrichment indices of nematodes in Chinese fir and cypress plantations, while only subtle changes were observed in pine plantations. Interestingly,across plantations, the effects of CTT on soil nematode communities were mainly due to changes in microbial biomass nitrogen and understory vegetation diversity.Conclusions:Forest management practices resulting in more open canopies uniformly affect soil food webs by changing the quantity and quality of resources associated with increased understory cover and diversity as well as microbial food. These insights increase our understanding of the impacts of forest management on the structure and functioning of belowground communities, which may contribute to management and conservation policies for more sustainable forestry.Haifeng Yin Yu Su Size Liu Xiangjun Li Xianwei Li Chuan Fan Pingting Guan Zhijing Xie Simin Wang Stefan Scheu Valentyna Krashevska 2022Forest Ecosystems2022,9,4:1
10Removal of alizarin red from water environment using magnetic chitosan with Alizarin Red as imprinted molecules显示文摘Lulu Fan Ying Zhang Xiangjun Li Chuannan Luo Fuguang Lu Huamin Qiu 2011Colloids and Surfaces B: Biointerfaces2011,,:1
11Adsorbent for chromium removal based on graphene oxide functionalized with magnetic cyclodextrin–chitosan显示文摘Leilei Li Lulu Fan Min Sun Huamin Qiu Xiangjun Li Huimin Duan Chuannan Luo 2013Colloids and Surfaces B: Biointerfaces2013,,:1
12The characteristics and failure mechanism of the largest landslide triggered by the Wenchuan earthquake, May 12, 2008, China显示文摘Runqiu Huang Xiangjun Pei Xuanmei Fan Weifeng Zhang Shigui Li Biliang Li 2012Landslides2012,,1:1
13Nanoporous Vesicular Membranes of Amphiphilic Polymers Containing Trans/Cis Isomers显示文摘Nanoporous membranes and vesicles are interesting systems with potential in applications offering channels for material exchange.Herein,nanoporous membranes and polymersomes are developed by self-assembly of trans-and cis-stereoisomers of amphiphilic polymers.Two polymers,PEG550-TPEChol and PEG550-SS-TPE-SS-Chol,containing a central tetraphenylethene(TPE),a cholesterol(Chol),and a poly(ethylene glycol)(PEG550)are studied.Hui Chen Xia Yu Yujiao Fan Xiangjun Xing Sylvain Trépout Min-Hui Li 2022CCS Chemistry2022,4,8:1
14Genetic variants in pseudogene E2F3P1 confer risk for HBV-related hepatocellular carcinoma in a Chinese population显示文摘Recent studies showed that pseudogenes can regulate the expression of their coding gene partners by competing for miRNAs. The E2F family plays a crucial role in the control of cell cycle checkpoint. E2F3P1 is a pseudogene of E2F3. Few studies focused on genetic variations on pseudogenes. In this study, we performed a case-control study to assess the association between single nucleotide polymorphisms (SNPs) in E2F3P1 and hepatocellular carcinoma (HCC) risk in 1050 hepatitis B virus (HBV)-positive HCC cases and 1050 chronic HBV carriers. Logistic regression analysis was applied to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the associations between genotypes and HCC risk. We found that the variant CT/TT genotypes of rs1838149 were associated with a significantly decreased risk of HCC (adjusted OR=0.66, 95% CIs=0.51-0.86, P=0.002) compared to those with wildtype CC homozygote. Furthermore, the AA genotype of rs9909601 had an increased HCC risk with an adjusted OR of 1.41 (95% CIs=1.07-1.86), and the A allele of rs9909601 was significantly associated with HCC risk compared to those with the G allele (adjusted OR=1.17, 95% CIs=1.03-1.33, P=0.017). These results indicate that genetic variations in the pseudogene E2F3P1 may confer HCC risk.Li Liu Yao Liu Jibin Liu Xiangjun Zhai Juan Wen Kaipeng Xie Hongbing Shen Zhibin Hu Zhining Fan 2013The Journal of Biomedical Research2013,27,3:1
15Optimal Mode Decision Method for Interframe Prediction in H.264/AVC显示文摘Studies show that encoding technologies in H.264/AVC,including prediction and conversion,are essential technologies.However,these technologies are more complicated than the MPEG-4,which is a standard method and widely adopted worldwide.Therefore,the amount of calculation in H.264/AVC is significantly up-regulated compared to that of the MPEG-4.In the present study,it is intended to simplify the computational expenses in the international standard compression coding system H.264/AVC for moving images.Inter prediction refers to the most feasible compression technology,taking up to 60%of the entire encoding.In this regard,prediction error and motion vector information are proposed to simplify the computation of inter predictive coding technology.In the initial frame,motion compensation is performed in all target modes and then basic information is collected and analyzed.After the initial frame,motion compensation is performed only in the middle 8×8 modes,and the basic information amount shifts.In order to evaluate the effectiveness of the proposed method and assess the motion image compression coding,four types of motion images,defined by the international telecommunication union(ITU),are employed.Based on the obtained results,it is concluded that the developed method is capable of simplifying the calculation,while it is slightly affected by the inferior image quality and the amount of information.Hongjin Zhu Honghui Fan Zhenqiu Shu Congzhe You Xiangjun Chen Qian Yu Pengzhen Gan 2020Computers, Materials & Continua2020,,12:0
16Research on a Comprehensive Monitoring System for Tunnel Operation based on the Internet of Things and Artificial Intelligence Identification Technology显示文摘This article proposes a comprehensive monitoring system for tunnel operation to address the risks associated with tunnel operations.These risks include safety control risks,increased traffic flow,extreme weather events,and movement of tectonic plates.The proposed system is based on the Internet of Things and artificial intelligence identification technology.The monitoring system will cover various aspects of tunnel operations,such as the slope of the entrance,the structural safety of the cave body,toxic and harmful gases that may appear during operation,excessively high and low-temperature humidity,poor illumination,water leakage or road water accumulation caused by extreme weather,combustion and smoke caused by fires,and more.The system will enable comprehensive monitoring and early warning of fire protection systems,accident vehicles,and overheating vehicles.This will effectively improve safety during tunnel operation.Xingxing Wang Donglin Dai Xiangjun Fan 2024Journal of Architectural Research and Development2024,8,2:0
17Moment-angle manifolds and connected sums of simplicial spheres显示文摘The connected sum is a fundamental operation in geometric topology and combinatorics.In this paper,we study the connection between connected sums of simplicial spheres and the algebraic topology of their corresponding moment-angle manifolds.The cohomology rings of moment-angle manifolds corresponding to connected sums of simplicial spheres are computed,which leads to a conjecture on the topology of such moment-angle manifolds.Feifei Fan Xiangjun Wang 2021Science China Mathematics2021,64,12:0
18Homology Groups of Simplicial Complements显示文摘This paper deals with homology groups induced by the exterior algebra generated by the simplicial compliment of a simplicial complex K. By using ech homology and Alexander duality, the authors prove that there is a duality between these homology groups and the simplicial homology groups of K.Jun MA Feifei FAN Xiangjun WANG 2016Chinese Annals of Mathematics,Series B2016,37,5:0
19Low Energy H^+ Effects on the Photovoltaic and Optical Properties of Polycrystalline Silicon Solar Cells显示文摘0IntroductionThepolycrystalinesilicon(poly-Si)solarcelisconsideredtobeoneofthemostpromisingcelscapableofachievingbothhighefic...Li, Jinchai Wu, Xiangao Ye, Mingsheng Fu, Qiang Fan, Xiangjun 1999Wuhan University Journal of Natural Sciences1999,4,1:0
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