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Communications in Theoretical Physics 2021年第6期73卷 13-42页

作者： Meng-Li Qin Xiao-yong Wen Cui-lian Yuan School of Applied Science Beijing Information Science and Technology UniversityBeijing 100192China

Under investigation in this paper is a relativistic Toda lattice system with one perturbation parameterαabbreviated as RTLαsystem by Suris,which may describe the motions of particles in lattices interacting through an exponential interaction *** of all,an integrable lattice hierarchy associated with an RTLαsystem is constructed,from which some relevant integrable properties such as Hamiltonian structures,Liouville integrability and conservation laws are ***,the discrete generalized(m,2 N-m)-fold Darboux transformation is constructed to derive multi-soliton solutions,higher-order rational and semirational solutions,and their mixed solutions of an RTLα*** soliton elastic interactions and details of rational solutions are analyzed via the graphics and asymptotic ***,soliton dynamical evolutions are investigated via numerical simulations,showing that a small noise has very little effect on the soliton *** results may provide new insight into nonlinear lattice dynamics described by RTLαsystem.

关键词： RTLαsystem Hamiltonian structures discrete generalized(m,2N-m)-fold Darboux transformation soliton and rational solutions asymptotic analysis

Insight on corrosion behavior of a Cu-P-Cr-Ni steel with different Ni contents by electrochemical and periodic immersion corrosion experiments

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Journal of Iron and Steel Research International 2023年第3期30卷 580-590页

作者： Zhi-wei lian Tian-en Peng Shuang Hu bo He Xue-wen Hu Tao Zhu bo Jiang School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Technical Center Ma’anshan Iron&Steel Co.Ltd.Ma’anshan 243041AnhuiChina

Corrosion behavior of Cu-P-Cr-Ni weathering steels with different nickel contents was studied by periodic immersion corrosion test for 72 *** mass loss method was used to evaluate the weatherability of weathering *** rust layers formed on weathering steel were characterized by scanning electron microscopy,X-ray diffraction,electron probe microanalysis,X-ray photoelectron spectroscopy,and electrochemical *** results of periodic immersion corrosion test for 72 h showed that the mass loss rates of Cu-P-Cr-0.14Ni steel and Cu-P-Cr-0.04Ni steel were 1.57 and 1.61 g/(m^(2)h),*** to the electrochemical experiment,the corrosion potentials of the two tested steels at the initial stage of corrosion were-0.6852 and-0.7037 V,*** the corrosion time reaching 72 h,the corrosion potential difference between the two tested steels was gradually *** the initial stage,NiO was formed in the rust layer and can dramatically promote the crystallization of corrosion products to improve the stability of the rust *** periodic immersion corrosion test for 72 h,Ni element had no obvious *** this time,it was mainly the enrichment of Cu and Cr elements in the form of CuO and Cr_(2)O_(3)in the rust layer that could further protect the matrix.

关键词： Weathering steel Ni Electrochemical experiment Periodic immersion corrosion Corrosion behavior

Spatial and temporal classification of synthetic satellite imagery:land cover mapping and accuracy validation

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Geo-Spatial Information Science 2014年第1期17卷 1-7页

作者： yong XU bo HUANG Department of Geography and Resource Management The Chinese University of Hong KongShatinN.T.Hong KongChina

This study focused on land cover mapping based on synthetic images,especially using the method of spatial and temporal classification as well as the accuracy validation of their *** experimental results indicate that the accuracy of land cover map based on synthetic imagery and actual observation has a similar standard compared with actual land cover survey *** findings facilitate land cover mapping with synthetic data in the area where actual observation is ***,in order to improve the quality of the land cover mapping,this research employed the spatial and temporal Markov random field classification *** results show that overall mapping accuracy can be increased by approximately 5% after applying spatial and temporal *** finding contributes towards the achievement of higher quality land cover mapping of areas with missing data by using spatial and temporal information.

关键词： land cover mapping synthetic data spatial and temporal classification

Recent Progresses in Lanthanide Metal-Organic Frameworks(Ln-MOFs) as Chemical Sensors for Ions, Antibiotics and Amino Acids

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Chinese Journal of Structural Chemistry 2022年第11期41卷 45-70页

作者： Yan Yang Shuting Xu Yanli Gai bo Zhang lian Chen College of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252059China State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhouJiangsu 221116China

Various ions and antibiotics,widely used in industry and clinical medicine,respectively,are massively discharged to atmosphere and water,resulting in severe pollutions on environment and potential threats to human ***,amino acids,the primary substances for the establishment of proteins,cells and tissues,are crucial to human ***,seeking effective and practicable materials to detect aforesaid analytes is vitally ***-organic frameworks centered with lanthanide ions(Ln-MOFs),also known as lanthanide coordination polymers,are considered as a charming category of multi-functional hybrid crystalline materials with fascinating structures and incomparable luminescent *** from their unique merits,Ln-MOFs have been largely developed as excellent luminescent sensors for fast and efficient sensing various *** this review,we aim to introduce some of the recent researches between 2018 to 2022 on Ln-MOFs applied as chemical sensors for ions,antibiotics and amino acids based on luminescent quenching and enhancing effects,and provide an update and summary for the latest progresses in this field.

关键词： lanthanide metal-organic frameworks luminescence luminescent sensors sensing mechanism

Motion Coordination for a Class of Multi-Agents via Networked Predictive Control

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Journal of Systems Science & Complexity 2020年第3期33卷 622-639页

作者： ZHANG Tian-yong YOU bo LIU Guo-Ping School of Automation Harbin University of Science and TechnologyHarbin 150080China School of Engineering University of South WalesPontypriddCF371DLUK The CTGT Center School of AstronauticsHarbin Institute of TechnologyHarbin 150001China

The motion coordination formation control problem for a class of non-linear system is considered in this paper,where networked induced time-delays exist in the feedback channel of each agent and in communication channels between *** a foundation work,a coordination formation controller in discrete-time domain that without time-delay is provided *** on the above results,a motion coordination predictive formation control strategy as well as its detail implementation processes are proposed to actively compensate the *** analysis and simulation results are provided to demonstrate the feasibility and effectiveness of the proposed predictive strategy.

关键词： Formation control motion coordination networked predictive control time-delays wheeled mobile robots

A Brief Introduction to Organic Electrodeposition and a Review of the Fabrication of OLEDs based on Electrodeposition Technology

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Chinese Journal of Polymer Science 2023年第5期41卷 621-639,I0005页

作者： bo-Han Wang Yu-Guang Ma yong Cao Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China

Electrodeposition is an old and effective method for the fabrication of organic *** electrodeposited organic films have been widely used in various applications,highly luminescent films have been a great challenge because the electrochemically doped state may strongly quench the *** the first part of this review,the organic electrodeposition techniques,along with general electropolymerization and other special electrodepositions are *** the second part of the review,we describe how to electrochemically fabricate luminescent films for organic light-emitting diodes(OLEDs).With the rational molecular design and well-controlled electrodeposition process,we have not only demonstrated high-performance OLEDs,but also paved a promising way to practice active-matrix OLEDs(AMOLEDs)and super-resolution *** particular,RGB 3×3 array OLEDs based on active-matrix substrates,RGB passive-matrix OLEDs(PMOLEDs)with a resolution of 210 ppi,and monochromatic OLEDs with a super-resolution of 2822 ppi have been successfully *** is highly anticipated that the organic electrodeposition technology is of comparable or perhaps even higher contenders in manufacturing and downscaling OLEDs and AMOLEDs with low-cost and high-resolution for the human-computer interaction fields such as augmented reality(AR),virtual reality(VR),etc.

关键词： Electrochemistry Organic electrodeposition Electropolymerization Luminescent films OLEDs

Comparative analysis of DNA-SIP and magnetic-nanoparticle mediated isolation (MMI) on unraveling dimethoate degraders

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 59-69页

作者： Luning lian Yi Xing Dayi Zhang Longfei Jiang Mengke Song bo Jiang School of Energy and Environmental Engineering University of Science&Technology BeijingBeijing 100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants University of Science&Technology BeijingBeijing 100083China National Environmental and Energy Science and Technology International Cooperation Base University of Science&Technology BeijingBeijing 100083China College of New Energy and Environment Jilin UniversityChangchun 130021China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China College of Natural Resources and Environment South China Agricultural UniversityGuangzhou 510642China National Engineering Laboratory for Site Remediation Technologies Beijing 100015China

Microorganisms are crucial in the bioremediation of organophosphorus pesticides. However, most functional microorganisms (> 99%) are yet to be cultivated. This study applied two cultivation-independent approaches, DNA-SIP and magnetic-nanoparticle mediated isolation (MMI), to identify the functional microorganisms in degrading dimethoate in agricultural soils. MMI identified five dimethoate degraders: Pseudomonas, Bacillus, Ramlibacter, Arthrobacter, and Rhodococcus, whereas DNA-SIP identified three dimethoate degraders: Ramlibacter, Arthrobacter, and Rhodococcus. Also, MMI showed higher resolution than DNA-SIP in identifying functional microorganisms. Two organic phosphohydrolase (OPH) genes: ophC2 and ophB, were involved in dimethoate metabolism, as revealed by DNA-SIP and MMI. The degradation products of dimethoate include omethoate, O,O,S-trimethyl thiophosphorothioate, N-methyl-2-sulfanylacetamide, O,O-diethyl S-hydrogen phosphorodithioate, O,O,O-trimethyl thiophosphate, O,O,S-trimethyl thiophosphorodithioate, and O,O,O-trimethyl phosphoric. This study emphasizes the feasibility of using SIP and MMI to explore the functional dimethoate degraders, expanding our knowledge of microbial resources with cultivation-independent approaches.

关键词： Stable isotope probing(SIP) Magnetic-nanoparticle mediated isolation(MMI) Dimethoate Biodegradation Cultivation-independent approach

Tuning of interactions between cathode and lithium polysulfide in Li-S battery by rational halogenation

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Journal of Energy Chemistry 2020年第10期29卷 147-152页

作者： Samson O.Olanrele Zan lian Chaowei Si Shuo Chen bo Li Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016LiaoningChina Key Laboratory of Functional Inorganic Material Chemistry(Ministry of Education of China) School of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080HeilongjiangChina Chemical Sciences Department Mountain Top UniversityOgun StateNigeria

Li-S batteries have aroused intense interests as one of the most promising high-energy-density storage ***,the complex undesired shuttle effect induced by dissolution and diffusion of lithium polysulfide intermediates remains the major setback of this *** modification of carbon cathode through heteroatom-doping is widely accepted as an effective method to inhibit the shuttle effect in Li-S battery ***,using first principle calculations,we systematically examined the interaction between halogenated graphene and lithium polysulfide *** is found that the halogen dopants(F,Cl,Br,I)significantly modify the local electronic structure of adsorption site and further induce a polarization to trap the ***,a concave curve is observed from F to I for lithium polysulfide adsorption rather than a linear *** exceptions demonstrated from iodine dopant is carefully analyzed and attributed to its unique charge ***,boron as second dopant further strengthens the interaction between halogenated graphene and polysulfide *** on halogenation strategy,lithium polysulfide/cathode interactions are tuned in a wide range,which can also be of great importance to accelerate redox reaction in Li-S ***,an effective method by halogenation is verified to regulate the adsorption of lithium polysulfide and also enhance the reaction kinetics of the Li-S battery system.

关键词： Li-S battery Halogenation Shuttle effect Co-doping

Storage life prediction under pre-strained thermally-accelerated aging of HTPB coating using the change of crosslinking density

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Defence Technology（防务技术） 2021年第4期17卷 1387-1394页

作者： yong-qiang Du Jian Zheng Gui-bo Yu Shijiazhuang Campus Army Engineering UniversityShijiazhuang050003China

In order to predict the storage life of a certain type of HTPB(hydroyl-terminated polybutadiene)coating at 25℃ and analyze the influence of pre-strain on the storage life,the accelerated aging tests of HTPB coating at 40℃,50℃,60℃,70℃ with the pre-strain of 0%,3%,6%,9%,respectively were carried *** variation regularity of the change of crosslinking density was analyzed and the aging model of HTPB coating under pre-strained thermally-accelerated aging was *** storage life of HTPB coating at 25℃ was estimated by using the Berthelot equation as the end point of the aging life with a 30% decrease in maximum *** results showed that the change of crosslinking density of HTPB coating increased with the increase of aging temperature and aging time,and decreased with the increase of *** 0% prestrain,the relationship between the change of crosslinking density of HTPB coating and the aging time can be described by the logarithmic model with the confidence probability greater than 99%.The stress relaxation phenomenon existed under 3%,6%and 9%pre-strained *** aging model considering chemical aging and pre-strain was established with the confidence probability greater than 90%.The storage life of HTPB coating was 15.2935 years at 25C under 0% prestrain,which was reduced by 13.9007%,75.6949% and 89.7859% under 3%,6% and 9% pre-strain,*** existence of pre-strain has a serious impact on the storage life of HTPB coating,therefore,the pre-strain should be avoided as much as possible during the actual storage.

关键词： HTPB coating Crosslinking density Aging model Storage life prediction Berthelot

Pressure characteristics of landslide-generated impulse waves

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Journal of Mountain Science 2019年第8期16卷 1774-1787页

作者： TAN Jian-min HUANG bo-lin ZHAO yong-bo Wuhan Center of China Geological Survey WuhanChina433002 Hubei Key laboratory of Disaster Prevention and Mitigation China Three Gorges UniversityYichangChina443000

The destructiveness of impulse waves generated by landslides(IWL) originates from the wave’s movement and load, wherein the impulse wave’s load is the major cause of sub-aerial building damage and casualties. In this study, an experiment involving 16 groups of physical tests for the wave pressure generated by a landslide was designed, consisting of 4 sets of IWL and 4 opposite bank slope angles. A high-frequency strain system was used to measure the total pressure of the impulse wave in a water tank. The tests showed that the dynamic pressure caused by the IWL can be divided into two types: impact pressure generated by the jetflow and the pulsating pressure caused by the wave. Under the same impulse wave conditions, the maximum run-up becomes smaller as the opposite bank’s slope angle increases, and the jetflow maximum impact pressure experienced by the opposite bank increases, while the maximum pulsating pressure caused by the impulse wave is slightly decreased. Different from previous studies, the spatial maximum pressure distributions of the wave generated by landslide were concluded that the position of the maximum pulsating pressure appears adjacent to the still water surface, and the overall spatial distribution pattern of maximum wave pressure is presented as an inclined 'M' ***, this study is the first to quantitatively analyzed that impact pressure has a very short action time, is even 7 times of the pulse pressure value, and there is a simple mathematical linear relationship between the two. Currently, some wave-load formulas for wind waves and tides are not applicable to calculating the loads of IWL. Research on the load of IWL will explain the hazard of impulse wave very clearly, and will greatly contribute to hazard prevention, mitigation and risk assessment work associated with IWL.

关键词： Landslide Impulse wave Wave pressure Impact pressure Pulsating pressure Pressure distribution