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22篇 您的检索式:作者名="Liu, XiangFu"
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1Metals in water and surface sediments from Henan reaches of the Yellow River,China显示文摘The concentrations of Cd,Cr,Cu,Ni,Pb and Zn were determined in the water and surface sediments from the Henan reaches of the Yellow River.Twenty-three sampling sites along the Yellow River and its tributaries were selected.Generally,metal concentrations were found to decrease in sequences of Zn>Cu>Pb>Cr>Ni>Cd in water and Zn>Cr>Pb>Ni>Cu>Cd in sediments.High levels of metal concentration were determined at a few stations of the river and its tributaries,such as Yiluo River,Si River and Qin River.The pollution of the Yellow River by Cd,Cr,Cu,Ni,Pb and Zn can be regarded as much higher compared to the background values,US EPA criteria(1999) and China water quality criteria(2002) .For sediments,metal lev-els except Pb did not significantly exceed the average shale levels and backgrounds in several countries including China.Data analysis manifests that positive correlations were found between Cu,Ni and Zn in water,and Pb,Ni,Zn and Cr in sediments. The Pearson correlation coefficient analysis and Cluster analysis were provided to assess the possible contamination sources. The results indicate a general appearance of serious pollution along the banks of the Yellow River.The wastewaters discharged by the mine plants,smelter plants,power plants,battery plants,tannery plants,etc.,and sewage inputs from the cities along the river banks may be the sources of metals.Feng, JingLan Wang, GuoLiang Sun, JianHui Sun, ShengPeng Liu, XiangFu 2010Science China Chemistry2010,53,5:5
2Growth mechanism of CsPbBr3 perovskite nanocrystals by a co-precipitation method in a CSTR system显示文摘A co-precipitation method based on supersaturated recrystallization in a continuous stirred-tank reactor(CSTR)system was applied to un cover the growth mecha nism of CsPbBr3 perovskite nano crystals(NCs).The reacti on rate can be controlled by changi ng the reaction conditions in this CSTR system,which helps us to observe importa nt intermediate stages to gain in sight into the growth mecha nism of these NCs.The effects of the temperature,concentrations of the ligands(oleylamine and oleic acid),and precursor concerttrations during the growth process of CsPbBr3 NCs were discussed in detail.Further,the growth mechanism of CsPbBr3 NCs was investigated in terms of the dynamics and thermodynamics on the basis of experimental results.The growth mechanism is a useful guide to large-scale synthesis.The synthesized CsPbBr3 NCs were employed for fabrication of both white light-emitting diodes and quantum-dot light-emitting diodes to test their photoelectric properties;the results show that CsPbBr3 NCs show great promise for optoelectronics applications.Jibin Zhang Lianwei Fan Junli Li Xiangfu Liu Rongwen Wang Lei Wang Guoli Tu 2019Nano Research2019,12,1:3
3Cetus:an efficient symmetric searchable encryption against file-injection attack with SGX显示文摘Symmetric searchable encryption(SSE)allows the users to store and query their private data in the encrypted database.Many SSE schemes for different scenarios have been proposed in the past few years,however,most of these schemes still face more or fewer security issues.Using these security leakages,many attacks against the SSE scheme have been proposed,and especially the non-adaptive file injection attack is the most serious.Non-adaptive file injection attack(NAFA)can effectively recover some extremely important private information such as keyword plaintext.As of now,there is no scheme that can effectively defend against such attacks.We first propose the new security attribute called toward privacy to resist nonadaptive file injection attacks.We then present an efficient SSE construction called Cetus to achieve toward privacy.By setting up a buffer and designing the efficient oblivious reading algorithm based on software guard extensions(SGX),we propose the efficient one-time oblivious writing mechanism.Oblivious writing protects the update pattern and allows search operations to be performed directly on the data.The experiment results show that Cetus achieves O(aw)search time and O(1)update communication.The practical search time,communication,and computation overheads incurred by Cetus are lower than those of state-of-the-art.Yanyu HUANG Siyi LV Zheli LIU Xiangfu SONG Jin LI Yali YUAN Changyu Dong 2021Science China(Information Sciences)2021,64,8:2
4Early results of a modified splenic hilar lymphadenectomy in laparoscopy-assisted total gastrectomy for gastric cancer with stage cT1-2: a case–control study显示文摘Guoxian Guan Weizhong Jiang Zhifen Chen Xing Liu Huishan Lu Xiangfu Zhang 2013Surgical Endoscopy2013,,6:1
5Photoconductivity Characteristics of Porous Silicon显示文摘The highly photo-sensitive characteristics of porous silicon(PS)were observed.The transient behaviors of photoconductivity in horizontal and perpendicular directions of PS surface were very different,though both of them include two decay components.The photoconduction spectra at room temperature and 14.5K show that characteristics of PS are different from those of silicon substrate.The difference may be attributed to quantum confinement effect in nano-size microstructures of PS.LIU Kaifeng WENG Yumin ZHU Lei WANG Shenyi ZONG Xiangfu 1994Chinese Physics Letters1994,11,5:0
6Plasmon-induced near-field and resonance energy transfer enhancement of photodegradation activity by Au wrapped CuS dual-chain显示文摘Self-assembled chain-like nanostructures utilizing localized surface plasmon resonance(LSPR)effect could enhance the local electromagnetic field for energy transfer,which provides huge structural advantages for some transmission-related applications such as photocatalysis.In this work,the dual-chain structure of Au chain wrapped CuS(denoted as Au Chain@CuS)was successfully synthesized by the one-step hydrothermal method.Namely,L-cysteine is used as the sulfur source and linking agent,and copper nitrate is the precursor of copper ions,forming the dual-chain driven by 15 nm uniform Au seeds.Transient absorption spectroscopy(TAS)and finite-difference-time-domain(FDTD)simulation exhibited the highly intensive electromagnetic field around the self-assembly chain,the raised formation and transfer rate of electron–hole pairs between the Au chain and surrounding CuS chain.Meanwhile,it shows an excellent photodegradation activity on dye rhodamine B(RhB).Within 1 h under simulated sunlight,the degradation rate reached 98.81%in Au Chain@CuS,which is 2.27 times higher compared to the bare CuS.The enhanced performance is mainly attributed to the near-field enhancement effect induced by LSPR,as well as the benefits of more effective resonance energy transfer(RET).This research comprehensively shows the electromagnetic field in LSPR metal chain is more intensive by order of magnitude relative to the isolated particles.Simultaneously the continuous CuS chain wrapped outside of the LSPR source effectively absorbs and utilizes the plasmonic energy,then promotes the formation of the photo-generated charge,thus increasing the photocatalytic performance.This founding of wrapped coupled-metal dual-chain provides a promising candidate for the highly efficient photocatalysts.Jinming Ma Xiangfu Liu Rongwen Wang Feng Zhang Guoli Tu 2022Nano Research2022,15,6:0
7A NEW SYNCHRONOUS DIGITAL HIERARCHICAL BI-DIRECTIONAL RING CAPACITY DESIGN ALGORITHM BASED ON THE SHORTEST-ROUTE TRAFFIC MATRIX显示文摘In this paper, the concept of the Shortest-Route Traffic Matrix(SRTM) was first presented, and the generalized formula for computing ring capacity requirement in use of SRTM is given. Then, a new capacity design algorithm which is based on SRTM was presented for Synchronous Digital Hierarchical(SDH) Bi-directional Self-Healing Ring (BSHR). The algorithm simulation results demonstrate that this algorithm is very efficient for SDH BSHR capacity design and can make less project investment and make high utilization of lines and equipment. By means of the algorithm in this paper, capacity optimization assignment for SDH Hierarchical Self-Healing Ring (HSHR) and for ATM Virtual Path (VP)-based Self-Healing Ring (SHR) is also discussed.Long Keping Cheng Shiduan(National Lab. of Switching Tech. and Telecommun. Networks, Beijing Univ. of Posts and Telecommun., Beijing 100876)Liu Hui(Chongqing University of Posts and Telecommunications, Chongqing 630065)Huang Xiangfu (Inst, of Elec. Eng., UEST of China, Chengdu 610054) 1999Journal of Electronics(China)1999,16,2:0
8An in vivo Study of Basic Fibroblast Growth Factor on Activation and Proliferation of Retinal Progenitor Cells in RCS Rat显示文摘Purpose: To investigate the effect of intravitreal injection of basic fibroblast growth factor(bFGF) on activation and proliferation of endogenous retinal progenitor cells in the Royal College of Surgeons(RCS) rat. Methods: Twenty-four rats were studied after the 30th postnatal day(≥30). Eighteen RCS-p+/LAV rats were divided into 3 groups: bFGF-treated, vehicle-treated and untreated groups randomly, and 6 RCS-ray+p+/Lav respectively rats were used as normal controls. 6 μl of bFGF (5 μg/10 μl) or vehicle was injected into the vitreous on day 31, 33 and 35 after birth (P31, P33, P35) in the bFGF group and vehicle group respectively, and no injections were administered in the untreated and control groups. All the rats were euthanized, and their eyes were enucleated, hemisected and fixed at 50 d ays after birth for immunohistochemistry and measurement of outer nuclear layer thickness. Results:Nestin and Chx10 were positive in all retinal layers, intravitreal injection of bFGF in retina-dystrophic RCS(RCS-p+/Lav) rats induced intense labeling for the retinal progenitor cell markers Chx10 and Nestin, which were highly colocalized. Fluorescence intensity for both labels was somewhat less in the control rats, and much less in the vehicle-injected rats as well as in the untreated RCS rats. The outer nuclear layer(ONL) was significantly thicker in bFGF group than that in vehicle-treated or untreated group(P<0.01), but thinner than that of the control group(P<0.01). No significant difference was observed in the ONL thickness between the vehicle group and untreated group(P>0.05). Conclusion:bFGF may contribute to the activation of retinal progenitor cells in RCS rats,thus counteract degeneration by promoting the proliferation of the progenitor cells.Xiaoping Xia Guoxiang Song Xiangfu Liu Xiangchen Tang Hui Ye 2010Eye Science2010,25,2:0
9Band Structure in Doubly Odd ~17Ta Nucleus显示文摘BandStructureinDoublyOdd~170TaNucleus¥ZhangYuhu;ZhaoQingzhong;ZhouXiaohong;XuHushan;GuoYinxiang;LeiXiangguo;LuJun;ZhuShaofei;?..Zhang Yuhu Zhao Qingzhong Zhou Xiaohong Xu Hushan Guo Yinxiang Lei Xiangguo Lu Jun Zhu Shaofei Huang Wenxue Liu Zhong Gou Quanbu Jin Hanjuan Hu Bitao Luo Yixiao Sun Xiangfu Zhu Yongtai Wen Shukian and Wu Shaoguang (The China Institute of Ato 1996IMP & HIRFL Annual Report1996,,1:0
10First In-beam γ Spectroscopy Experiment at HIRFL 显示文摘FirstIn-beamγSpectroscopyExperimentatHIRFL¥GuoYiugxiang;ZhuShaofei;ZhouXiaohong;LeiXiangguo;LiuZhong;JinHanjuan;ZhangYuhu;Zha...Guo Yiugxiang Zhu Shaofei Zhou Xiaohong Lei Xiangguo Liu Zhong Jin Hanjuan Zhang Yuhu Zhao Qingzhong Sun Xiangfu and Luo Yixiao 1996IMP & HIRFL Annual Report1996,,1:0
11Evidence for Octupole Correlations in ^(117)Xe显示文摘Evidence for Octupole Correlations in  ̄(117)XeEvidenceforOctupoleCorrelationsin ̄(117)XeLiuZhong;SunXiangfu;ZhouXiaohong;LeiXi...Liu Zhong Sun Xiangfu Zhou Xiaohong Lei Xiangguo Guo YingXiang Chen Xinfeng Jin Hanjuan Zhang Yuhu Luo YiXiao Wen Shuxian Yuan Guanjun Yang Chunxiang Li Guangsheng and Liu Xiangan 1995IMP & HIRFL Annual Report1995,,0:0
12Lifetimes Measurement of 11/2- and 7/2-States in ^(117)Xe显示文摘Lifetimes Measurement of 11/2- and 7/2-States in^(117)XeLifetimesMeasurementof11/2-and7/2-Statesin^(117)Xe¥LiuZhong;SunXiangfu...Liu Zhong Sun Xiangfu Lei Xiangguo Guo YingXiang Cheng Xinfeng Zhou Xiaohong Zhang Yuhu Jin Hanjuan Luo Yixiao Wen Shuxian Yuan Guanjun Liu Xiangan and Yang Chunxiang 1995IMP & HIRFL Annual Report1995,,0:0
13Observation of Noncollective Excitation in ^(117)Xe显示文摘Observation of Noncollective Excitation in^(117)XeObservationofNoncollectiveExcitationin^(117)Xe¥LiuZhong;SunXiangfu;ZhouXiaoh...Liu Zhong Sun Xiangfu Zhou Xiaohong Let Xiangguo Guo Yingkiang Zhang Yuhu Jin Hanjuan Chen Xinfeng Luo Yixiao Wen Shuxian Yuan Guanjun Yang Chunxiang Li Guangsheng Liu Xiangan Luo Wendong Chen Yongshou 1995IMP & HIRFL Annual Report1995,,0:0
14On Beam Study of^(198)Bi Decay显示文摘Excited nucleus ^(198)Bi was produced via the ^(187)Re(16O,5n)^(198)Bi reaction.Theγ-rays following theβ+/EC(electron capture)decay of ^(198)Bi were measured in beam by using a powerful multidetector system.Based on coincidences with the knownγ-rays of ^(198)Pb,five new transitions were identified and eight new energy levels were established for ^(198)Pb.ZHOU Xiaohong SUN Xiangfu LEI Xiangguo JIN Hanjuan LIU Zhong ZHANG Yuhu PAN Qiangyan GUO Yingxiang LUO Yixiao WEN Shuxian YUAN Guanjun LI Guangsheng YANG Chunxiang 1995Chinese Physics Letters1995,12,1:0
15Spin Assignment for Yrast Levels ofOdd-odd ^(162)Lu Nucleus显示文摘Spin Assignment for Yrast Levels of Odd-odd ^(162)Lu Nucleus¥ZhangYuhu;ZhouXiaohong;ZhaoQingzhong;SunXiangfu;LeiXiangguo;GuoY?..Zhang Yuhu Zhou Xiaohong Zhao Qingzhong Sun Xiangfu Lei Xiangguo Guo Yingxiang Liu Zhong Chen Xingfeng Zhu Yongtai Wen Shuxian Yuan Guanjun and Liu Xiangan(Chinese Institute of Atomic Energy,Beijing.) 1994IMP & HIRFL Annual Report1994,,0:0
16Strong Signature Dependence of Yrast Levels in ^(162)Lu显示文摘Strong Signature Dependence of Yrast Levels in^(162)Lu¥ZhangYuhu;ZhouXiaohong;ZhaoQingzhong;SunXiangfu;LeiXiangguo;GuoYingxia?..Zhang Yuhu Zhou Xiaohong Zhao Qingzhong Sun Xiangfu Lei Xiangguo Guo Yingxiang Liu Zhong Chen Xingfeng Zhu Yongtai Wen Shuxian Yuan Guanjun and Liu Xiangan(Chinese Institute of Atomic Energy,Beijing.) 1994IMP & HIRFL Annual Report1994,,0:0
17First Observation of Yrast Band in N=91 Odd-odd ^(162)Lu Nucleus 显示文摘First Observation of Yrast Band in N=91 Odd-odd ^(162)Lu Nucleus¥ZhangYuhu;ZhouXiaohong;ZhaoQingzhong;SunXiangfu;LeiXiangguo;?..Zhang Yuhu Zhou Xiaohong Zhao Qingzhong Sun Xiangfu Lei Xiangguo Guo Yingxiang Liu Zhong Chen Xingfeng Zhu Yongtai Wen Shuxian Yuan Guanjun and Liu Xianan(Chinese Institute of Atomic Energy,Beijing.) 1994IMP & HIRFL Annual Report1994,,0:0
18Progress in Lifetime Measurement with Plunger显示文摘Progress in Lifetime Measurement with Plunger¥ChenXinfeng;SunXiangfu;GuoYingxiang;LiuZhong;ZhouXiaohong;LetXiangguo;JinHanjua...Chen Xinfeng Sun Xiangfu Guo Yingxiang Liu Zhong Zhou Xiaohong Let Xiangguo Jin Hanjuan and Luo Yixiao 1994IMP & HIRFL Annual Report1994,,0:0
19Identification of γ-rays in ^(198)Bi显示文摘Identification of γ-rays in ^(198)Bi¥ZhouXiaohong;SunXiangfu;LetXiangguo;ChenXinfeng;LiuZhong;ZhangYuhu;JinHanjuan;GuoYingxia?..Zhou Xiaohong Sun Xiangfu Let Xiangguo Chen Xinfeng Liu Zhong Zhang Yuhu Jin Hanjuan Guo Yingxiang Luo Yiniao Wen Shuxian Yuan Guanjun Li Guangsheng and Yang Chunxian(Departemt of Nuclear Physics,CIAE,Beijing.) 1994IMP & HIRFL Annual Report1994,,0:0
20Determination of an Isomeric State in ^(198)Bi显示文摘Determination of an Isomeric State in ^(198)Bi¥ZhouXiaohong;SunXiangfu;LetXiangguo;ChenXinfeng;LiuZhong;ZhangYuhu;JinHanjuan;?..Zhou Xiaohong Sun Xiangfu Let Xiangguo Chen Xinfeng Liu Zhong Zhang Yuhu Jin Hanjuan Guo Yingxiang Luo Yisiao Wen Shuxian Yuan Guanjun Li Guangsheng and Yang Chunxian(Department of Nuclear Physics,CLAE,Beijing.) 1994IMP & HIRFL Annual Report1994,,0:0
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