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A Riemann-Hilbert Approach to the Chen-Lee-Liu Equation on the Half Line

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Acta Mathematicae Applicatae Sinica 2018年第3期34卷 493-515页

作者： Ning ZHANG Tie-cheng XIA En-gui FAN Department of Basical Courses Shandong University of Science and Technology Taian 271019 China Department of Mathematics Shanghai University Shanghai 200444 China School of Mathematical Sciences Fudan University Shanghai 200433 China

In this paper, the Fokas unified method is used to analyze the initial-boundary value for the ChenLee-Liu equation i？tu ＋？xxu-i｜u2｜？xu = 0 on the half line（-∞, 0] with decaying initial value. Assuming that the solution u（x, t） exists, we show that it can be represented in terms of the solution of a matrix Riemann-Hilbert problem formulated in the plane of the complex spectral parameter λ. The jump matrix has explicit（x, t） dependence and is given in terms of the spectral functions{a（λ）, b（λ）}and{A（λ）, B（λ）}, which are obtained from the initial data u0（x） = u（x, 0） and the boundary data g0（t） = u（0, t）, g1（t） = ux（0, t）, respectively. The spectral functions are not independent,but satisfy a so-called global relation.

关键词： Chen-Lee-Liu equation initial-value problem RiemannIHilbert problem Fokas unified method jump matrix

Application of Near-Infrared Reflectance Spectroscopy to the Evaluation of D-chiro-Inositol,Vitexin,and Isovitexin Contents in Mung Bean

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Agricultural Sciences in China 2011年第12期10卷 1986-1991页

作者： YAO Yang cheng Xu-zhen REN gui-xing Institute of Crop Science Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

Mung bean （Vigna radiata L.） is rich in D-chiro-inositol （DCI）, vitexin, and isovitexin, which has beneficial effects on antidiabetic and inhibits the formation of advanced glycation end-products. In this study, near-infrared reflectance spectroscopy （NIRS） was used to predict the contents of DCI, vitexin, and isovitexin in mung bean. The spectra data were linearized with those determined by high-performance liquid chromatography （HPLC）. The models for predicting the DCI, vitexin, and isovitexin contents in mung bean were developed using partial least-squares （PLS） algorithm. Cross-validation procedures indicated good correlations between HPLC data and NIRS predictions （R2=0.90 for DCI, R2=0.81 for vitexin, and R2=0.90 for isovitexin）. The predictive contents of DCI, vitexin, and isovitexin ranged from 2.082 to 3.084%, 1.277 to 1.307%, and 0.5998 to 0.6286%, respectively. The results showed that NIRS, a well-established and widely applied technique, could be applied to rapid detection of DCI, vitexin, and isovitexin contents in mung bean.

关键词： D-chiro-inositol, vitexin, isovitexin, NIRS, mung beanMun bean is an imoortant natural so

Determination of alkali-labile phosphoprotein phosphorus from fish plasma using the Tb^(3+)-tiron complex as a fluorescence probe

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Journal of Environmental Sciences 2007年第5期19卷 616-621页

作者： LV Xue-fei ZHAO Yi-bing ZHOU qun-fang JIANG gui-bin SONG Mao-yong State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beifing 100085 China Department of Chemistry the Key Laboratory of Analytical Sciences of Ministry of Education Xiamen University Xiamen 361005 China

A sensitive method based on the fluorescence quenching effect of the Tb^3＋-Tiron complex is proposed for the determination of alkali-labile phosphoprotein phosphorus （ALP） released from fish plasma. The detection limit was 5.4 ng/ml （S/N=2）, and the relative standard deviation of the quenching effect （6 replicates） was 4.6%. The results obtained by the proposed method were in good agreement with those obtained by the colorimetric assay. The advantages of the present method are its relatively simple detection procedure, the lack of toxic organic solvents, and high sensitivity.

关键词： alkali-labile phosphoprotein phosphorus (ALP) Chinese loach fluorescence quenching Tb^3+-Tiron complex vitellogenin

Fragmentation Effects on Diversity of Wasp Community and Its Impact on Fig／Fig Wasp Interaction in Ficus racemosa L.

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Journal of Integrative Plant Biology 2005年第1期47卷 20-26页

作者： Rui-WuWANG cheng-YunYANG gui-FangZHAO Jun-XingYANG KunmingInstituteofZoology theChineseAcademyofSciencesKunming650223China／／GraduateSchooloftheChineseAcademyofSciencesBeijing100039China KunmingInstituteofZoology theChineseAcademyofSciencesKunming650223China／／CollegeofLifeSciencesNorthwestUniversityXi＇an710069China CollegeofLifeSciences NorthwestUniversityXi＇an710069China KunmingInstituteofZoology theChineseAcademyofSciencesKunming650223China

Abstract: Habitat fragmentation usually results in alteration of species composition or biological communities. However, little is known about the effect of habitat fragmentation on the fig/fig wasp system. In this study, we compared the structure of a fig wasp community and the interaction between figs and fig wasps of Ficus racemosa L. in a primary forest, a locally fragmented forest and a highly fragmented forest. Our results show that, in the highly fragmented forest, the proportion of pollinator wasps is lower and the proportion of non-pollinator wasps is higher compared with the primary forest and locally fragmented forest. The proportion of fruits without pollinator wasps in mature fruits is also greatly increased in the highly fragmented forest. The proportion of galls in all female flowers increases in the highly fragmented forest, whereas the proportion of viable seeds does not change considerably. The disruption of groups of fig trees results in a decrease in pollinator wasps and even might result in the extinction of pollinator wasps in some extreme cases, which may transform the reciprocal interaction between figs and fig wasps into a parasite/host system. Such an effect may lead to the local extinction of this keystone plant resource of rain forests in the process of evolution, and thereby, may change the structure and function of the tropical rain forest.

关键词： Ficus racemosa L. fig fig wasp fragmentation tropical rain forest

Contents of D-chiro-Inositol,Vitexin,and Isovitexin in Various Varieties of Mung Bean and Its Products

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Agricultural Sciences in China 2011年第11期10卷 1710-1715页

作者： YAO Yang cheng Xu-zhen REN gui-xing Institute of Crop Science Chinese Academy of Agricultural Sciences Beijing 100081 P.R. China

Mung bean （Vigna radiata L.） is rich in bioactive compounds including D-chiro-inositol （DCI）, vitexin, and isovitexin, which have beneficial effects on patients with diabetes. To find a better source for these valuable chemicals, we have collected 110 varieties of mung bean seed samples and 8 mung bean products to determine the levels of these bioactive compounds. We also measured the DCI content in mung bean sprouts at different germination stages. Content of DCI, vitexin, and isovitexin in all mung bean varieties ranged from 0.43 to 5.79, 0.12 to 3.00, and 0.03 to 1.16 mg g-~, respectively. The varieties of C0001321, C0003522, and C0004485 have the highest DCI, vitexin, and isovitexin contents, respectively. The mung bean products in the market contained relatively lower level of these bioactive components. Contents of DCI, vitexin, and isovitexin in all mung bean products ranged from 0.119 to 0.717, 0 to 0.547, and 0 to 0.923 mg g-~, respectively. During the 112 h of germination test, DCI level steadily increased at first stage and reached the highest level at 80 h of germination （4.79 mg g-~）. These results provide useful information for the selection of suitable varieties and proper germination stages to obtain functional ingredients from mung beans.

关键词： D-chiro-inositol vitexin isovitexin mung bean

Fault-Tolerant Hamiltonicity and Hamiltonian Connectivity of BCube with Various Faulty Elements

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Journal of Computer Science & Technology 2020年第5期35卷 1064-1083页

作者： gui-Juan Wang cheng-Kuan Lin Jian-Xi Fan Jing-Ya Zhou Bao-Lei cheng School of Computer Science and Technology Soochow UniversitySuzhou 215006China School of Computer Science and Technology Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China College of Mathematics and Computer Science Fuzhou UniversityFuzhou 350108China

BCube is one kind of important data center *** and Hamiltonian connectivity have significant applications in communication *** far,there have been many results concerning fault-tolerant Hamiltonicity and fault-tolerant Hamiltonian connectivity in some data center ***,these results only consider faulty edges and faulty *** this paper,we study the fault-tolerant Hamiltonicity and the fault-tolerant Hamiltonian connectivity of BCube(n,k)under considering faulty servers,faulty links/edges,and faulty *** any integers n≥2 and k≥0,let BCn,k be the logic structure of BCube(n,k)and F be the union of faulty elements of BCn,k,Let fv/fe,and fs be the number of faulty servers,faulty edges,and faulty switches of BCiLbe(n,k),*** show that BCnik-F is fault-tolerant Hamiltonian if fv+fe+(n-1)/s≤(n-1)(k+1)-2 and BCn,k-F is fault-tolerant Hamiltonian-connected ifv,+fe+(n-1)fs≤(n-1)(k+1)-*** the best of our knowledge,this paper is the first work which takes faulty switches into account to study the fault-tolerant Hamiltonicity and the fault-tolerant Hamiltonian connectivity in data center networks.

关键词： data center network BCube fault-tolerance Hamiltonicity Hamiltonian connectivity

Plants of Leptostrobus Heer （Czekanowskiales） from the Early Cretaceous and Late Triassic of China, with Discussion of the Genus

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Journal of Integrative Plant Biology 2006年第2期48卷 137-147页

作者： Xiu-qun Liu cheng-Sen Li Yu-Fei Wang Laboratory of Systematic and Evolutionary Botany Institute of Botany the Chinese Academy of Sciences Beijing 100093 China

Investigation of the Mesozoic seed plant Leptostrobus Heer from the Yangcaogou Formation of the Late Triassic and the Yixian Formation of the Early Cretaceous, Liaoning Province, China, provides new Insight Into Its general morphology and geographical distribution. The materials of L. cancer from the Yixian Formation described herein are later than all the past findings of this species and add to the record of L. cancer during the Early Cretaceous. Based on well-preserved specimens, the specific diagnosis Is slightly emended and the reconstructlon of L. cancer Is perfected. The materials from the Yangcaogou Formation of the Late Triassic are placed in L. spheericus, in addition, we review the history of investigation of the genus Leptostrobus since its establishment in 1876 and discuss the main characteristics of each species.

关键词： Early Cretaceous Late Triassic Leptostrobus Yangcaogou Formation Yixian Formation.

Sun-Earth connection event of super geomagnetic storm on 2001 March 31:the importance of solar wind density

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Research in Astronomy and Astrophysics 2020年第3期20卷 122-128页

作者： Li-Bin cheng gui-Ming Le Ming-Xian Zhao School of Physics and Electronic Information Shangrao Normal UniversityShangrao 334001China National Center for Space Weather China Meteorological AdministrationBeijing 100081China

An X1.7 flare at 10:15 UT and a halo CME with a projected speed of 942 km s-1 erupted from NOAA solar active region 9393 located at N20 W19,which were observed on 2001 March *** the CME reached the Earth,it triggered a super geomagnetic storm(hereafter super storm).We find that the CME always moved towards the Earth according to the intensity-time profiles of protons with different *** solar wind parameters responsible for the main phase of the super storm occurred on 2001 March 31 are analyzed while taking into account the delayed geomagnetic effect of solar wind at the L1 point and using the SYM-H *** to the variation properties of SYM-H index during the main phase of the super storm,the main phase of the super storm is divided into two parts.A comparative study of solar wind parameters responsible for two parts shows the evidence that the solar wind density plays a significant role in transferring solar wind energy into the magnetosphere,besides the southward magnetic field and solar wind speed.

关键词： Sun coronal mass ejections(CMEs)-Sun solar-terrestrial relations--Sun solar wind

Dual impact of superior SEI and separator wettability to inhibit lithium dendrite growth

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Rare Metals 2022年第2期41卷 353-355页

作者： Wei-Wei Han Ryanda Enggar Anugrah Ardhi gui-cheng Liu Department of Physics Dongguk UniversitySeoul 04620Republic of Korea Center for Energy Storage Research Clean Energy InstituteKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Lithium metal battery(LMB)is regarded as the most potential energy storage ***,unfortunately,its large-scale commercial development is hindered due to the uncontrollable dendrite growth problem on its Li-metal *** utilization of electrolyte additives is one of the promising strategies to solve the problem mentioned *** electrolyte additive based on heptafluorobutyric anhydride(HFA)is used to solve the dendrite problem by forming robust inorganic-rich solid electrolyte interphase(SEI)and enhancing the separator wettability.

关键词： electrolyte lithium impact