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On the Mixed Propagator Approach to ρ-ω Mixing

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Communications in Theoretical Physics 2002年第8期38卷 195-199页

作者： YAN Mu-Lin jiANG ji-Hao wang xiao-Jun CCAST World Laboratory P.O. Box 8730 Beijing 100080 China Center for Fundamental Physics University of Science and Technology of China Hefei 230026 China CCAST World Laboratory P.O. Box 8730 Beijing 100080 China Center for Fundamental Physics University of Science and Technology of China Hefei 230026 China Instite of Theoretical Physics Academia Sinica Beijing 100080 China

The mixed propagator (MP) approach to ρ-ω mixing is discussed. It is found that under the pole-approximation assumption the results of MP approach is not compatible both with the effective Lagrangian theory andwith the experiment measurement criterion. To overcome these inconsistent, we propose a new MP approach in whichthe physical states of ρ and ω are determined by the requirement of experimental measurement to meson resonance. Interms of this new MP approach, the EM pion form factor Fπ and form factors of ρo →π0γ and of ω→πo γ are *** results of Fπ are in good agreement with data. The form factor of ρo →π0γ exhibits a hidden charge-asymmetryenhancement effect which agrees with the prediction of the effective Lagrangian theory.

关键词： isospin breaking, VMD, ρ-ω mixing, decay of vector mesons

Microstructure and mechanical properties of twin-wire arc sprayed Ni-Al composite coatings on 6061-T6 aluminum alloy sheet

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International Journal of Minerals,Metallurgy and Materials 2014年第5期21卷 469-478页

作者： ji-xiao wang jing-shun Liu Lun-yong Zhang jian-fei Sun Zhi-ping wang School of Materials Science and Engineering Harbin Institute of Technology Harbin Welding Institute China Academy of Machinery Science & Technology School of Materials Science and Engineering Inner Mongolia University of Technology National Laboratory of Solid State Microstructures & Department of Materials Science and Engineering Nanjing University College of science Civil Aviation University of China

We have systematically studied the microstructure and mechanical properties of Ni-5wt%Al and Ni-20wt%Al composite coat- ings fabricated on 6061-T6 aluminum alloy sheet by twin-wire arc spraying under different experimental conditions. The abrasive wear be- havior and interface diffusion behavior of the composite coatings were evaluated by dry/wet rubber wheel abrasive wear tests and heat treat- ment, respectively. Experimental results indicate that the composite coatings exhibit features of adhesive wear. Besides, the Vickers micro- hardness of NiA1 and Ni3AI intermetallic compounds is relatively larger than that of the substrate, which is beneficial for enhancing the wear resistance. With the increase of annealing temperature and time, the interface diffusion area between the Ni-Al coating and the substrate gradually expands with the formation of NiAl3 and Ni2Al3 phases, and is controlled by diffusion of aluminum atoms. The grain growth ex- ponent n of diffusion kinetics of the Ni-Al coating, calculated via a high-temperature diffusion model at 400, 480, and 550℃, is between 0.28 and 0.38. This satisfies the cubic law, which is consistent with the general theoretical relationship of high-temperature diffusion.

关键词： composite coatings intermetallics spraying aluminum alloys mechanical properties diffusion

Microstructure of Ni–Al powder and Ni–Al composite coatings prepared by twin-wire arc spraying

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International Journal of Minerals,Metallurgy and Materials 2016年第7期23卷 810-818页

作者： ji-xiao wang Gui-xian wang jing-shun Liu Lun-yong Zhang Wei wang Ze Li Qi-xiang wang jian-fei Sun Harbin Welding Institute China Academy of Machinery Science & Technology School of Materials Science and Engineering Harbin Institute of Technology Shanxi Pingyang Industry Machinery Co. Ltd. School of Materials Science and Engineering Inner Mongolia University of Technology Max Plank Center of Complex Phase Materials Pohang University of Science and Technology

Ni–Al powder and Ni–Al composite coatings were fabricated by twin-wire arc spraying（TWAS）. The microstructures of Ni-5wt%Al powder and Ni-20wt%Al powder were characterized by scanning electronic microscopy（SEM） and energy dispersive spectroscopy（EDS）. The results showed that the obtained particle size ranged from 5 to 50 μm. The morphology of the Ni–Al powder showed that molten particles were composed of Ni solid solution, NiAl, Ni_3Al, Al_2O_3, and NiO. The Ni–Al phase and a small amount of Al_2O_3 particles changed the composition of the coating. The microstructures of the twin-wire-arc-sprayed Ni–Al composite coatings were characterized by SEM, EDS, X-ray diffraction（XRD）, and transmission electron microscopy（TEM）. The results showed that the main phase of the Ni-5wt%Al coating consisted of Ni solid solution and Ni Al in addition to a small amount of Al_2O_3. The main phase of the Ni-20wt%Al coating mainly consisted of Ni solid solution, Ni Al, and Ni_3Al in addition to a small amount of Al and Al_2O_3, and Ni Al and Ni_3Al intermetallic compounds effectively further improved the final wear property of the coatings. TEM analysis indicated that fine spherical NiAl_3 precipitates and a Ni–Al–O amorphous phase formed in the matrix of the Ni solid solution in the original state.

关键词： spraying powder composite coatings aluminum alloys intermetallics microstructure

Rabi Oscillations in Two-Component Bose-Einstein Condensates with a Coupling Drive

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Communications in Theoretical Physics 2002年第5期38卷 547-552页

作者： LI Wei-Dong FAN Wen-Bing ZHOU xiao-ji wang Yi-Qiu LIANG jiu-Qing Department of Physics and Institute of Theoretical Physics Shanxi University Taiyuan 030006 China State Key Lab of Magnetism Institute of Physics the Chinese Academy of Sciences Beijing 100080 China Key Laboratory for Quantum Information and Measurements Ministry of Education of China State Key Lab of Magnetism Institute of Physics the Chinese Academy of Sciences Beijing 100080 China Key Laboratory for Quantum Information and Measurements Ministry of Education of China Department of Electronics Peking University Beijing 100871 China Key Laboratory for Quantum Information and Measurements Ministry of Education of China Department of Electronics Peking University Beijing 100871 China Department of Physics and Institute of Theoretical Physics Shanxi University Taiyuan 030006 China

The Rabi oscillations in two-component Bose-Einstein condensates with a coupling drive are studiedby means of a pair of bosonic operators. The coupling drive and initial phase difference will affect the amplitudeand the period of the Rabi oscillations. The Rabi oscillations will vanish in the evolution of the condensate densityfor some special initial phase differences (ψ = 0 or π). Our theory provides not only an analytical framework forquantitative predictions for two-component condensates, but also gives an intuitive understanding of some mysteriousfeatures observed in experiments and numerical. simulations.

关键词： Bose-Einstein condensates, R.abi oscillations

Reproducibility of RTVue retinal nerve fiber layer thickness and optic nerve head measurements in normal and glaucoma eyes

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Chinese Medical Journal 2010年第14期123卷 1898-1903页

作者： LI ji-peng wang xiao-zhen Fu jing LI Shu-ning wang Ning-li Tongren Eye Center Beijing Tongren Hospital Capital Medical University Ophthalmology and Visual Science Key Laboratory China Beijing 100730 China

Background RTVue spectral-domain optical coherence tomography （OCT） is a new, ultra high-speed and high-resolution instrument, potentially to measure the presence of glaucoma or its progression accurately. The objective of this study was to evaluate its reproducibility of retinal nerve fiber layer （RNFL） thickness and optic nerve head （ONH） measurements in normal and glaucoma eyes. Methods This study was an observational clinical study. One eye was selected randomly from each of 89 normal individuals and 63 glaucoma patients in a range of severity. RNFL thickness and ONH were measured 3 times on the same day to determine intrasession variability. The same instrument was used by the same operator for all scans. Intrasession within-subject standard deviation （Sw）, precision （1.96xSw）, coefficient of variation （CVw, 100xSw/overall mean）, and intraclass coefficient （ICC） were calculated to evaluate reproducibility. Results RTVue OCT demonstrated double hump patterns in the RNFL profiles. High reproducibility was observed in all ONH parameters. For normal eyes, the value of ICC ranged between 0.98 and 1.00. For eyes with different extent of glaucoma, it ranged between 0.94 and 1.00. High reproducibility was also observed in RNFL thickness measurements. The values of ICC for averaged RNFL thickness ranged between 0,95 and 1.00 in all cases. For regional parameters, it ranged from 0,94 to 0.98 for normal eyes, 0.94 to 1.00 for mild glaucoma eyes, 0.87 to 1.00 for moderate glaucoma eyes, and 0.77 to 0.97 for severe glaucoma eyes. The nasal regions of severe glaucoma appeared to be most variable, as nasal lower region and inferior nasal region had the ICC values of 0.77 and 0.87. Conclusion Reproducibility of RTVue RNFL and ONH measurements was excellent in normal and glaucoma groups.

关键词： diagnostic techniques ophthalmological, instrumentation optical coherence tomography standards reproducibility

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu xiao Wei xiao Di Hu Guoxiong wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

Mechanism of Zixinyin oral liquid in the treatment of insomnia based on network pharmacology and molecular docking

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Drug Combination Therapy 2022年第2期4卷 17-24页

作者： Shuang-Lin Qin Xin Chen Si-Wen Hui Meng-Wei Xu Rui Peng xiao-ji wang Qing Min School of Pharmacy Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei ProvinceXianning Medical CollegeHubei University of Science and TechnologyXianning 437100China School of Pharmacy Jiangxi Science&Technology Normal UniversityNanchang 330013China Engineering Research Center of Health Food Design&Nutrition Regulation School of Chemical Engineering and Energy TechnologyDongguan University of TechnologyDongguan 523808China

Objective:To explore the molecular mechanism of Zixinyin oral liquid(ZOL)in the treatment of ***:The compounds and action targets of four herbal medicines in ZOL were collected via Traditional Chinese Medicine Systems Pharmacology Database and Analysis *** corresponding to the targets were queried from the UniProt *** database was searched to screen the related targets of insomnia.A Gene Ontologyfunction enrichment analysis and a Kyoto Encyclopedia of Genes and Genomespathway enrichment analysis were performed by Database for Annotation,Visualization and Integrated *** software was used for molecular docking to verify the results of network ***:A total of 47 effective compounds and 187 potential targets of ZOL were screened out from the four drugs.A total of 2592 disease targets were screened out from the genecards database,and there were 1576 genes whose relevance score≥0.5.46 genes were obtained by taking the intersection of 187 potential targets of ZOL and 1,576 targets of insomnia.A total of 3,405 entries were obtained from Gene Ontologyfunctional enrichment(P<0.05).A total of 195 signaling pathways were obtained through a Kyoto Encyclopedia of Genes and Genomespathway analysis(P<0.05).Tumor necrosis factor,interleukin 17and hypoxia inducible factor-1signaling pathways were closely related to *** results of molecular docking show that all the core compounds of ZOL had a certain degree of affinity with gamma-aminobutyric acid receptor subunit alpha-1(GABRA1)and tumor necrosis factor-α(TNF-α).Paeoniflorgenone shows the highest affinity with GABRA1,and beta-sitosterol shows the highest affinity withTNF-α.ZOLmay have a therapeutic effect on insomnia through its action on targets such as GABRA1 and TNF-α,meanwhile regulating many signaling pathways.

关键词： Zixinyin oral liquid insomnia network pharmacology molecular docking GABRA1 TNF-α

Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 377-384页

作者： Yawei xiao Qianqian Gu Haoyu Li Mengyao Li Yude wang National Center for International Research on Photoelectric and Energy Materials School of Materials and Energy Yunnan University Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources School of Chemistry and Chemical Engineering Hainan University College of Chemical Engineering Fuzhou University Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies Yunnan University

Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety,but their practical application is limited by slow ion *** address this,a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+diffusion *** employing electrodeposition to coat MoS2on the surface of BaV6O16·3H2O nanowires,the directional built-in electric field generated at the heterointerface acts as a cation accelerator,continuously accelerating Zn2+diffusion into the active *** optimized Zn2+diffusion coefficient in CC@BaV-6O16·3H2O@MoS2(7.5×10～8cm2s-1) surpasses that of most reported V-based ***,MoS2serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2full batteries to over 10000 *** work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.

关键词： Internal electric field Cationic accelerator Ion diffusion kinetics Cathode modification strategy Aqueous zinc ion battery

Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

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Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu wang xiao Ding Huang Yunyi Yiyu Liu jia Li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel