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| 1 | Rehabilitation Medicine显示文摘 | NAN DENGKUN LIAO HONGSHI | 1993 | Peking:People''s HealthPublishing House1993，，： | 1 |
| 2 | COMPARISONS OF RAY-TRACING AND PARABOLIC EQUATION METHODS FOR THE LARGE-SCALE COMPLEX ELECTROMAGNETIC ENVIRONMENT SIMULATIONS显示文摘It is important for the wireless communication field to conduct research on large-scale complex electromagnetic environment(CEME)simulation.There exist many models for computing CEME simulation,including empirical models,half-empirical or halfdeterministic models and deterministic models.Most of these models cannot obtain satisfactory results due to the limitation of the capacity of computers.The ray tracing(RT)and parabolic equation(PE)methods are very suitable for large-scale CEME simulation.Based on the introduction of RT and PE,qualitative comparisons of the two methods are analyzed in view of algorithm theory,the category of the model,solution to the model and the application field,and then four specific indices are focused on to analyze the computational complexity,accuracy,speed and parallelism in details.The numerical experiments are presented by the three-dimensional(3D)RT method employing the software of Wireless InSite(WI)and a quasi-3DPE method using the sliced method.Although both RT and PE methods can achieve high speedup using coarse-grained parallel computing,the experimental results indicate that the PE method can obtain a higher speed than the RT method,and the two methods can acquire an approximate precision.A hybrid procedure using both RT and PE methods can obtain a better result for solving CEME problems. | YUEWEI SHEN LIN ZHANG DENGKUN LIU YINGNIAN WU LAN MU ALPH CHUNTSINGER | 2012 | International Journal of Modeling, Simulation, and Scientific Computing2012，3，2： | 1 |
| 3 | Comprehensive two-dimensional gas chromatography with flame photometric detection applied to organophosphorus pesticides in food matrices显示文摘 | Xiangping Liu Blagoj Mitrevski Dengkun Li Jiequan Li Philip J. Marriott | 2013 | Microchemical Journal2013，，： | 1 |
| 4 | Preparation and Properties of Electrospun Sheath-core Modified-PMMA Nanofibers with Photoluminescence and Photochromic Functions显示文摘Multi-functional nanofibers are playing an important role in the optical field,and are widely used in fluorescence indication,product anti-counterfeit identification and smart clothing.Nanofibers with photoluminescence and photochromic functions are already attracting more interest from researchers.In this work,based on electrospun technology,the modified-PMMA nanofibers[PMMA=poly(methyl methacrylate)]with photoluminescence and photochromic functions were prepared through the design of the sheath-core structure(SCNFs 1-4).Compared with other samples,SCNF-4 shows outstanding photoluminescence and photochromic functions.SCNF-4 can produce green light and its fluorescence intensity and fluorescence lifetime can reach 7144 a.u.and 1031.32µs,respectively.In photochromic functions,SCNF-4 can show purple in 1 min under the 365 nm ultraviolet light,and the color can be preserved for more than 4 h under the sunlight.When SCNF-4 is irradiated by far infrared light,the color of the samples can fade quickly in 40 s.Under the irradiation of ultraviolet light of different wavelengths,SCNF-4 can display multi-color fluorescence and achieve a reversible transition between white and purple.The design of the sheath-core structure realizes the complementarity of photoluminescence and photochromic functions of the electrospun modified-PMMA nanofibers,which is important to promote the wide application of multi-functional nanofibers in the optical field. | WANG Yan XI Peng SHU Dengkun MENG Shuang LIU Kai WANG Xiaoqing CHENG Bowen | 2021 | Chemical Research in Chinese Universities2021，37，3： | 0 |
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