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Anomalous Dispersion Behavior of Staggered Arranged Metal Nanowire Arrays

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Chinese Physics Letters 2014年第3期31卷 140-143页

作者： chen jun-xue SHANG Li-Ping School of Science Southwest University of Science and Technology Mianyang 621010 School of Information Engineering Southwest University of Science and Technology Mianyang 621010

The dispersion relations of staggered arranged metal nanowire arrays are numerically investigated. It is demonstrated that the structure can support the propagation of plasmon modes with zero and negative group velocities derived directly from the dispersion curves, apart from normal plasmon modes with positive group velocities. Furthermore, the effects of the structural parameters on the dispersion behaviors of plasmon modes are also examined.

关键词： Nanowires

Numerical simulation of PAHs sorption/desorption on soil with the influence of Tween80

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Journal of Environmental Sciences 2006年第4期18卷 716-720页

作者： chen Jing WANG xue-jun HUjun-dong XU Fu-liu TAO Shu College of Environmental Science MOE Laboratory of Earth Surface Process Peking University Beijing 100871 China

In this paper, the influences of inionic surfactant Tween80 on polycyclic aromatic hydrocarbons （PAHs） sorption/desorption on artificially contaminated soil were studied, and γ model was applied to simulate the influences. Results showed that, with the use of Tween 80, the sorption behaviors of PAHs on soil altered significantly. Adsorbed Tween 80 increased the sorption amount of PAHs while the dissolved Tween80 increased the apparent solubility of PAHs. These two processes exert influences on the sorption coefficient of PAHs in soil-water system, which can be depicted by apparent sorption coefficient. The partition coefficients （the soil/water partition coefficient of PAHs and surfactants obtained fxom sorption experiments） and statistical parameters used in the amended γ model were obtained in independent experiments. With these parameters, the γ model could provide a satisfactory independent prediction of PAHs release from soil to aqueous phase at two surfactant concentrations.

关键词： Tween80 PAHs soil sorption/desorption γ model

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

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Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu chen xue-jun Li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

Synthesis and Self-assembling of Coumarin-based Low-molecular Weight Organogelators

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Chemical Research in Chinese Universities 2009年第2期25卷 178-182页

作者： chen Guo-jun xue Peng-chong LU Ran SONG Dong-po BAO Chun-yan XU Ting-hua ZHAO Ying-ying College of Chemistry Jilin University Changchun 130012 P. R. China

Four coumarin derivatives（4a-4d） with different alkoxy chains were synthesized. It was found that compound 4d showed a better gelation ability than the other compounds, for example, it could self-assemble into organogels in various organic fluids via ultrasound treatment or heating-cooling process, whereas compound 4c could only gel in a few mixed solvents and compounds 4a, 4b could not form organogel. The results from fluorescent and FT-IR spectra indicate that π-π interaction had an effect on the formation of the organogels of compound 4d besides H-bonding and van der Waals interaction, which were the driving forces for the self-assembling of compound 4c in gel state. The gel of compound 4d in toluene could emit strong fluorescence under UV irradiation and the [2＋2] cyclo-addition was suggested by ^1H NMR and fluorescence spectroscopy. This light-sensitive organogel might find application in optical materials.

关键词： Coumarin Organogelator Self-assembling [2+2] Cyclo-addition

Satellite Structure for Valence Shell of Methane by Electron Momentum Spectroscopy

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Chinese Physics Letters 1997年第11期14卷 827-829页

作者： FAN Xiao-wei ZHANG Qing-xiang ZHOU Shao-jie DENG Jing-kang ZHENG Yen-you chen xue-jun Laboratory of Electron Momentum Spectroscopy Department of Modern Applied PhysicsTsinghua UniversityBeijing 100084 Department of Chemistry University of British ColumbiaCanada

The first extensive electron momentum spectroscopy study of the satellite structure in the inner valence region of methane at 1200eV is *** experimental momentum profiles belonging to the(2a_(1))^(-1) satellite state ... 详细信息

关键词： calculation. momentum Electron

Valence Orbitals of Ethane by Electron Momentum Spectroscopy

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Chinese Physics Letters 1998年第5期15卷 341-342页

作者： PANG Wen-ning GAO Nai-fei ZHANG Wen-xin SHANG Ren-cheng DENG Jing-kang chen xue-jun Laboratory of Electron Momentum Spectroscopy Department of PhysicsTsinghua UniversityBeijing 100084

The valence electron binding energy spectra and orbital electron momentum distributions of ethane(C2H6)have been measured by high resolution(ΔE=0.9eV,Δp=0.1 a.u.)symmetric non-coplanar electron momentum spectroscopy,at an impact energy of 1200eV+binding *** high energy resolution is adequate for us to be observe clearly the separated valence orbitals of C_(2)H_(6).

关键词： energy. momentum valence

Experimental study on steam-water two-phase flow frictional pressure drops in helical coils

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Nuclear Science and Techniques 1997年第3期8卷 149-153页

作者： Bi Qin cheng, chen Ting Kuan, Tian Yong Sheng, chen xue jun (National Laboratory of Multiphase Flow, Xi’an Jiaotong University, Xi’an710049)

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关键词：汽-水二相流部分压强螺形线圈中水滴

Model test of geotextiles in controlling the collapse of karst roadbed

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Yantu Lixue/Rock and Soil Mechanics 2020年 41卷 143-153页

作者： Wu, Di Wu, Jian-Jian Xu, Chao chen, xue-jun Huang, Xiang School of Architecture and Transportation Engineering Guilin University of Electronic Technology Guilin 541004 China Department of Geotechnical Engineering Tongji University Shanghai 200092 China College of Civil Engineering & Architecture Guilin University of Technology Guilin 541004 China

The use of geotextiles in the treatment of roadbed caused by karst collapse has obvious advantages over traditional treatment methods. The effects of L/B (i.e., the ratio of anchorage length of geotextile to the width of active foundation in the collapse zone) on soil pressure, vertical displacement and fabric tension are studied by model test in laboratory, and it is compared with that of the non-reinforced condition. The results show that the earth pressure under the geotextile reinforced cushion in the subsidence area decreases rapidly after collapse occurs when the geotextile is used, and the soil pressure is zero due to the separation of geotextile from the bottom soil. The earth pressure at this point also decreases rapidly after collapse occurs in the case of no reinforcement, but it eventually tends to stable. When the anchoring length L = 2.0B, 1.0B, the geotextile has the similar ability in controlling the vertical displacement of the filling. It is obviously better than that of L = 0.5B and L = 0.25B. The geotextile tensile force in the stable zone decreases rapidly away from the collapsed zone. The tensile force is close to zero at the location with the distance of 1.0B away from the subsidence zone. The results show that the suitable length of geotextile is effective in treating the collapse of karst roadbed and backfilling process. © 2020, Science Press. All right reserved.

关键词： Geotextiles

Valence Shell Ionization Spectra of Propane by (e, 2e) Spectroscopy

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Chinese Physics Letters 1998年第9期15卷 648-650页

作者： PANG Wen-ning ZHANG Wen-xin GAO Nai-fei SHANG Ren-cheng DENG Jing-kang chen xue-jun Department of Physics Tsinghua UniversityBeijing 100084

The measurements of the valence shell ionisation energy spectra(6-32eV)for propane(C_(3)H_(8))by high resolution(ΔE=0.9eV andΔp=0.1 a.u.)(e,2e)spectrometer at impact energy of 1200eV plus binding energy and symmetric noncoplanar kinematics are *** spectrum is consistent with a single particle picture of ionization from each of the seven outer-valence orbitals and the three inner-valence *** ionization energies are in agreement with published photoelectron spectroscopy data.

关键词： valence ionization outer