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| 1 | A new complex Duffing oscillator used in complex signal detection显示文摘In view of the fact that complex signals are often used in the digital processing of certain systems such as digital communication and radar systems,a new complex Duffing equation is proposed.In addition,the dynamical behaviors are analyzed.By calculating the maximal Lyapunov exponent and power spectrum,we prove that the proposed complex differential equation has a chaotic solution or a large-scale periodic one depending on different parameters.Based on the proposed equation,we present a complex chaotic oscillator detection system of the Duffing type.Such a dynamic system is sensitive to the initial conditions and highly immune to complex white Gaussian noise,so it can be used to detect a weak complex signal against a background of strong noise.Results of the Monte-Carlo simulation show that the proposed detection system can effectively detect complex single frequency signals and linear frequency modulation signals with a guaranteed low false alarm rate. | DENG XlaoYing LIU HaiBo LONG Teng | 2012 | Chinese Science Bulletin2012,57,17: | 11 |
| 2 | In - Depth Colloidal Dispersion Gels Improve Oil Recovery Efficiency显示文摘Daqing Oilfield has carried out the production of polymer flooding was promoted since in 1996. Presently, polymer flooding is very successful in several production plants of Daqing Oilfield, and getting into industrialization production. It has played a very important role in maintaining the oilfield stable production of over 50 million tons of oil. But the high permeability variation is serious, resulting in polymer production in some production wells recylingly and production concentration increasing slowly, which adversely affects polymer flooding efficiency. Chlloid dispersion gels (CDG) is a unique in - depth permeability modification process. It can reduce in - depth reservoir permeability variation by moving into highly permeable, water saturated zones and providing high resistance to subsequent water injection in those zones, so that oil can be produced from tighter rock. So CDG can enlarge volumetric sweep, and improve oil recovery efficiency. We had a CDG pilot programme in Daqing Oil Field in 1999, now this pilot has been entering into effective period with produing more oil and less water. | Luo Jiangtao Yang Haibo Wu Tianhu Xiao Long | 2000 | Global Geology2000,5,2: | 5 |
| 3 | Effect of boron doping on waterproof and dielectric properties of polyborosiloxane coating on SiO2f/SiO2 composites显示文摘A hydrophobic coating of the silica fiber reinforced silica composites(SiO2f/SiO2) was synthesized by sol-gel method using methyltriethoxy-silane(MTES) and boric acid(B(OH)3) as raw materials. The relationship among boron doping, chemical structure of precursors and durability of hydrophobic coatings was discussed. The Si-O-B and methyl groups were successfully introduced in the gel precursors according to the FT-IR and XPS results. The resins were filled in the internal and surface holes of the SiO2f/SiO2 composites partially or completely, which is beneficial to reduce the physical adsorption of the moisture. In addition, hydroxyl groups of the SiO2f/SiO2 composites reacted with the resins and hydrophobic methyl groups were introduced, leading to the reduction of the chemical adsorption of water. Also, the boron doping was beneficial to enhancing the physical cross-linking between the coating and the SiO2f/SiO2 composites, and improved the adhesion of the coating to the substrate. The results show that the optimal hydrophobic coating with contact angle 130.33°, moisture absorption 0.33% and adhesion level 1 is obtained when the molar ratio of MTES to B(OH)3 is 10:4. The real permittivity of M10B4 is constant in the range of 2.32–2.51 and the dielectric tangent loss is constant in the range of 5.5 × 10-4–8.7 × 10-3. The hydrophobic coating has excellent dielectric properties. | Long XIA Siru LU Bo ZHONG Longnan HUANG Hua YANG Tao ZHANG Haibo HAN Pan WANG Li XIONG Guangwu WEN | 2019 | Chinese Journal of Aeronautics2019,32,8: | 5 |
| 4 | Distributed Containment Control of Networked Nonlinear Second-order Systems With Unknown Parameters显示文摘In this paper, we study the containment control problem for nonlinear second-order systems with unknown parameters and multiple stationary/dynamic leaders. The topologies that characterize the interaction among the leaders and the followers are directed graphs. Necessary and sufficient criteria which guarantee the control objectives are established for both stationary leaders(regulation case) and dynamic leaders(dynamic tracking case) based protocols. The final states of all the followers are exclusively determined by the initial values of the leaders and the topology structures. In the regulation case, all the followers converge into the convex hull spanned by the leaders,while in the dynamic tracking case, not only the positions of the followers converge into the convex hull but also the velocities of the followers converge into the velocity convex hull of the leaders.Finally, all the theoretical results are illustrated by numerical simulations. | Long Ma Haibo Min Shicheng Wang Yuan Liu Zhiguo Liu | 2018 | IEEE/CAA Journal of Automatica Sinica2018,5,1: | 3 |
| 5 | Effects of Surfactants SDS and CTAB on Ni-SiC Deposition显示文摘The influences of surfactant type and concentration on the content and uniformity of SiC particles in Ni-SiC deposit were studied in this paper. The electrochemical behavior of preparing Ni-SiC composite coating was investigated using the cyclic voltammetry method. Then the impact of surfactants on the deposition potential of Ni-SiC coating was analyzed. Electrochemical studies showed that the cathode overvoltage increases gradually with increasing SDS(Sodium dodecyl sulfate) concentration. The CV curve showed the shift towards a lower current at a given potential with increasing SDS concentration. Ni-SiC composite coatings were prepared by electrodeposition. The experimental results show that the dispersion of 40 nm SiC in Ni-SiC coating obtained in the electrolyte containing SDS is superior that containing CTAB(cetyltrimethyl ammonium bromide). CTAB increases the content of 40 nm SiC particles in the Ni-SiC coating, but the uniformity of 40 nm SiC particles in Ni-SiC composite coating is poor. SiC particles are still agglomerated. Compared with the anionic surfactant SDS and the cationic surfactant CTAB, surfactant SDS makes the particles better dispersed. But the contribution of surfactant SDS for co-deposition amount of SiC particles is negligible. The cationic surfactant CTAB can effectively improve the suspension performance of SiC particles and promote the co-deposition of SiC particles and metallic nickel. But there is still some reunion of SiC. | 阚洪敏 FENG Xiaojun WEI Xiaodong ZHANG Ning WANG Xiaoyang LONG Haibo | 2018 | Journal of Wuhan University of Technology(Materials Science)2018,33,4: | 2 |
| 6 | Analysis of Protein Moiety of Polysaccharide Conjugates Water-extracted from Low Grade Green Tea显示文摘 | CHEN Xiaoqiang SHAO Shengrong XIE Jianchun YUAN Hao LI Qian WU Long WU Zhengqi YUAN Haibo JIANG Yongwen | 2018 | Chemical Research in Chinese Universities2018,34,4: | 2 |
| 7 | An Overview of Research in Distributed Attitude Coordination Control显示文摘This paper provides an overview of attitude coordination problems of multi-rigid-body with the goal of promoting research in this area. Theoretical results regarding consensus seeking with different system models, different communication topologies, different control goals and different techniques are summarized. And applications of consensus protocols to multirigid-body coordination are investigated. Finally, some future research directions and open problems are also proposed. | Long Ma Haibo Min Shicheng Wang Yuan Liu Shouyi Liao | 2015 | IEEE/CAA Journal of Automatica Sinica2015,2,2: | 2 |
| 8 | Separation and accumulation of Cu(Ⅱ),Zn(Ⅱ) and Cr(Ⅵ) from aqueous solution by magnetic chitosan modified with diethylenetria-mine显示文摘 | Li Haibo Bi Shaodan Liu Long | 2011 | Desalination2011,278,3: | 1 |
| 9 | Sensitive and Selective Determination of Cu^(2+) Using Self-Assembly of 4-Mercaptobenzoic Acid on Gold Nanoparticles显示文摘Cu^(2+)is a bio-accumulative and toxic environmental pollutant,so its sensitive and selective detection is of great importance.In this work,gold nanoparticles were electrochemically deposited on fluorine-doped tin oxide and characterized by scanning electron microscope and cyclic voltammetry.4-Mercaptobenzoic acid(4-MBA),which contained carboxyl chelator,was self-assembled on the surface of gold nanoparticles through S-Au bond.The strong chelation of Cu^(2+)with 4-MBA formed a stable Cu^(2+)-4-MBA complex,which was confirmed by energy-dispersive X-ray spectroscopy.Square wave voltammetry was applied to determine the concentration of Cu^(2+).Under optimized condition,the oxidation peak current was proportional to the concentration of Cu^(2+)in the range of 10-1500 nM with limit detection of 8 nM.The proposed electrochemical sensor showed excellent selectivity towards Cu^(2+).In addition,the applicability of the developed sensor was evaluated by determin-ing the concentrations of Cu^(2+)in river water samples,which were consistent with the results of inductively coupled plasma mass spectroscopy. | Mi Zhou Long Han Haibo He Dongmei Deng Lin Zhang Xiaoxia Yan Zhenyu Wu Yaqi Zhu Liqiang Luo | 2019 | Journal of Analysis and Testing2019,3,4: | 1 |
| 10 | Synthesis, characterization and photoactivity of bi-crystalline mesoporous TiO2显示文摘Mesoporous titania (meso-TiO 2) 由于它的万用的潜在的应用收到了广泛的注意。这份报纸用 peroxo 为 meso-TiO 2 的制造报导一条低温度的 templating 途径巨人的酸(PTA ) 大音阶的第五音作为先锋和 Pluronic P123 作为 nonionic 模板。TGA, XRD, N 2 吸着, FE-SEM 和 HRTEM 被用来描绘获得的样品。结果与高表面区域显示出那 meso-TiO 2 直到 163 m 2 汣獥 ?? 坍乃吗?? | Dongthanh NGUYEN Wei WANG Haibo LONG Hongqiang RU | 2016 | Frontiers of Materials Science2016,10,1: | 1 |
| 11 | Inorganic Halide Perovskite Quantum Dots:A Versatile Nanomaterial Platform for Electronic Applications显示文摘Metal halide perovskites have generated significant attention in recent years because of their extraordinary physical properties and photovoltaic performance.Among these,inorganic perovskite quantum dots(QDs)stand out for their prominent merits,such as quantum confinement effects,high photoluminescence quantum yield,and defect-tolerant structures.Additionally,ligand engineering and an all-inorganic composition lead to a robust platform for ambient-stable QD devices.This review presents the state-of-the-art research progress on inorganic perovskite QDs,emphasizing their electronic applications.In detail,the physical properties of inorganic perovskite QDs will be introduced first,followed by a discussion of synthesis methods and growth control.Afterwards,the emerging applications of inorganic perovskite QDs in electronics,including transistors and memories,will be presented.Finally,this review will provide an outlook on potential strategies for advancing inorganic perovskite QD technologies. | Chien‑Yu Huang Hanchen Li Ye Wu Chun‑Ho Lin Xinwei Guan Long Hu Jiyun Kim Xiaoming Zhu Haibo Zeng Tom Wu | 2023 | Nano-Micro Letters2023,15,2: | 1 |
| 12 | A simple and reusable fluorescent sensor for heme proteins based on a conjugated polymer-doped electrospun nanofibrous membrane显示文摘 | Huaming Wang Zhou Peng Yuanyuan Long Haibo Chen Yufei Yang Na Li Feng Liu | 2012 | Talanta2012,,: | 1 |
| 13 | Separation and ac- cumulation of Cu( I ), Zn( lI ) and Cr( V显示文摘 | Li Haibo Bi Shaodan Liu Long | 2011 | Desalination2011,278,3: | 1 |
| 14 | Cadmium tolerance and hyperaccumulation in a new Zn-hyperaccumulating plant species (Sedum alfredii Hance) 显示文摘 | YANG Xiaoe LONG Xinxian YE Haibo | 2004 | Plant and Soil2004,259,12: | 1 |
| 15 | Highly sensitive detection of nitroaromatic explosives using an electrospun nanofibrous sensor based on a novel fluorescent conjugated polymer显示文摘 | Long Yuanyuan Chen Haibo Wang Huaming | 2012 | Analytica Chimica Acta2012,744,: | 1 |
| 16 | Preliminary Results of Combination Therapy with Chinese Herbs and Vinorelbine in Elderly Advanced Non-Small Cell Lung Cancer显示文摘 | Wanyin Wu Xiaoshu Chai Gaoyang Li Haibo Zhang Shunqing Long Xiaoguang Xue Hong Deng Weisheng Liu | 2006 | Journal of US-China Medical Science2006,3,2: | 0 |
| 17 | Recent advances in directα-C(sp^(3))-H bond functionalization of thioethers显示文摘Thioether skeletons are widely present in drugs,natural products,functional materials,and life science.In the past decade,the selective C–H functionalization of thioethers has been extensively studied to construct novel thioether derivatives.This mini-review systematically introduces the recent advances in the field of the directα-C(sp^(3))-H functionalization of thioethers. | Long Tang Qingyue Hu Ke Yang Mazen Elsaid Chong Liu Haibo Ge | 2022 | Green Synthesis and Catalysis2022,3,3: | 0 |
| 18 | Major controlling factors and hydrocarbon accumulation models of large-scale lithologic reservoirs in shallow strata around the Bozhong sag,Bohai Bay Basin,China显示文摘Based on the practice of oil and gas exploration and the analysis of shallow lithologic reservoirs,combined with the allocation relationship and enrichment law of oil and gas accumulation factors,main controlling factors and models of hydrocarbon accumulation of large lithologic reservoirs in shallow strata around the Bozhong sag are summarized,and favorable exploration areas are proposed.The coupling of the four factors of“ridge-fault-sand-zone”is crucial for the hydrocarbon enrichment in the shallow lithologic reservoirs.The convergence intensity of deep convergence ridges is the basis for shallow oil and gas enrichment,the activity intensity of large fault cutting ridges and the thickness of cap rocks control the vertical migration ability of oil and gas,the coupling degree of large sand bodies and fault cutting ridges control large-scale oil and gas filling,the fault sealing ability of structural stress concentration zones affects the enrichment degree of lithologic oil and gas reservoirs.Three enrichment models including uplift convergence type,steep slope sand convergence type and depression uplift convergence type are established through the case study of lithologic reservoirs in shallow strata around the Bozhong sag. | ZHOU Xinhuai WANG Deying YU Haibo YANG Haifeng LI Long | 2022 | Petroleum Exploration and Development2022,49,4: | 0 |
| 19 | A Compact,Flexible Low Energy Experimental Platform of Highly Charged Ions for Atomic Physics Experimental Research显示文摘A new,compact and exible low energy experimental platform of highly charged ions(HCIs)based on an electron beam ion source of the Dresden EBIS-A type is presented.The so-called IMP EBIS-A Facility of the Institute of Modern Physics(IMP)in Lanzhou is designed as a user facility for the state-resolved charge exchange studies in HCIs with atoms and molecules collisions by cold target recoil ion momentum spectroscopy(COLTRIMS). | Zhu Xiaolong Ma Xinwen Li Jinyu M.Schmidt Feng Wentian Peng Haibo Xu Jiawei G.Zschornack Liu Huiping Zhang Tongmin Zhao Dongmei Guo Dalong Huang Zhongkui Zhou Xianmin Gao Yong Cheng Rui Wang Hanbing Yang Jie Kang Long 无 | 2019 | IMP & HIRFL Annual Report2019,,1: | 0 |
| 20 | Absorptive root-multidimension strategy links air temperature and species distribution in a montane forest显示文摘Background: Air temperature affects absorptive root traits, which are closely related to species distribution.However, it is still unclear how air temperature regulates species distribution through changes in absorptive root traits. Seven functional traits of the absorptive roots of 240 individuals of 52 species, soil properties and air temperature were measured along an elevational gradient on Mt. Fanjingshan, Tongren City, Guizhou, and then the direct and indirect effects of these controls on species distribution were detected.Results: Absorptive roots adapted to air temperature with two strategies. The first strategy was positively associated with the specific root area(SRA) and specific root length(SRL) and was negatively associated with the root tissue density(RTD), representing the classic root economics spectrum(RES). The second strategy was represented by the trade-off between root diameter, mycorrhizal fungi colonization(MF) and SRL, representing the collaboration gradient with “do it yourself” resource uptake ranging from “outsourcing” to mycorrhizal resource uptake. Air temperature regulated species distribution in six ways: directly reducing species importance value;indirectly increasing the species importance value by reducing soil nitrogen content or increasing soil pH by reducing soil moisture inducing absorptive roots to change from “do it yourself” resource absorption to “outsourcing” resource absorption;indirectly decreasing the species importance value by decreasing soil moisture to change from“outsourcing”resource absorption to “do it yourself” resource absorption;indirectly increasing the species importance value with increasing soil pH by reducing soil moisture resulting in absorptive root traits turning into nutrient foraging traits;and indirectly decreasing the species importance value by promoting absorptive root traits to nutrient conservation traits.Conclusions: Absorptive root traits play a crucial role in the regulation of species distribution through multiapproaches of air temperature. | Zuhua Wang Min Liu Long Li Jianwei Hou Xiaodong Zhang Haibo Li Chuandong Yang Lilin Yang | 2023 | Forest Ecosystems2023,10,3: | 0 |