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Impacts of Different Dynamic Factors on the Saltwater Intrusion in the Northern Branch of the Yangtze Estuary

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China Ocean Engineering 2019年第6期33卷 673-684页

作者： wang jin-hua ZHANG De-bin ZHANG Wei-sheng ZHANG jin-shan State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research InstituteNanjing 210029China College of Harbor Coastal and Offshore EngineeringHohai UniversityNanjing 210098China

A 3-D baroclinic numerical model is established to study the temporal and spatial distribution of salinity in the Northern Branch(NB) of the Yangtze Estuary(YE) in response to river runoff, wind and currents. The idealized,process-oriented studies show that the lower river runoff in the dry season is the main driving factor for the spilling over from the NB to the Southern Branch(SB). The NB takes longer time to get in dynamic stable state compared with the SB, as the runoff transfers from the wet season to the dry season. The vertical stratification intensity of the NB has obvious periodic phenomena in the dry season, and the stratification strength is enhanced under the action of low runoff and north wind, which further weakens the vertical transport of water. Momentum balance analysis suggested that the landward net flux increases when considering the influence of the moderate north wind, and the landward flux will enhance if considering the boundary current during the spring tide. With the influence of the boundary current, increases the average salinity of the NB, as well as the intrusion degree from the NB to the *** indicates that the nearshore ocean current of the Yellow Sea is an important factor affecting the saltwater intrusion in the NB of the YE.

关键词： Yangtze Estuary saltwater intrusion ocean currents vertical stratification FVCOM

Low-Lying Pentaquark Baryons in Pseudoscalar-Vector SU（3） Skyrme Model

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Communications in Theoretical Physics 2007年第2X期48卷 319-325页

作者： XIA Zheng-Tong wang Shun-jin ZHANG hua Department of Physics Sichuan University Chengdu 610064 China

For the first time the low-lying J = 1/2 pentaquark states are investigated in the pseudoscalar-vector Skyrme model. Once the conventional baryon properties are fit, other states are predicted without any more adjustable parameters. Furthermore, both symmetry-breaking and decay operators are treated in full. In particular, we focus on the calculations of mass and decay width, and compare them with the experimental data available and relevant theoretical results obtained in other pictures. We recognize that the higher-order contributions, such as the 35 and/or 35 representation admixtures, are not negligible. Our analysis provides some valuable clues to the physical mechanisms, and the oncoming experimental search and/or confirmation could provide a sharp test of our proposal

关键词： nonstandard multiquark Skyrmions hadron mass calculations hadronic decays

Fluid Flow Modeling of Arc Plasma and Bath Circulation in DC Electric Arc Furnace

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Journal of Iron and Steel Research International 2006年第5期13卷 7-13页

作者： wang Feng-hua jin Zhi-jian ZHU Zi-shu School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 China

A mathematical model describing the flow field, heat transfer and the electromagnetic phenomenon in a DC electric arc furnace has been developed. First the governing equations in the arc plasma region are solved and the calculated results of heat transfer, current density and shear stresses on the anode surface are used as boundary conditions in a model of molten bath. Then a two-dimensional time-dependent model is used to describe the flow field and electromagnetic phenomenon in the molten bath. Moreover, the effect of bottom electrode diameter on the circulation of molten bath is studied.

关键词： DC electric arc furnace fluid flow heat transfer molten bath

Response of Organic Acids to Zinc Homeostasis in Zinc-Deficient and Zinc-Toxic Apple Rootstock Roots

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Pedosphere 2012年第6期22卷 803-814页

作者： LIU Di LIU Ai-Hong HE Chen wang jin-hua wang Yah-An State Key Laboratory of Crop Biology College of Life ScienceShandong Agricultural UniversityTai'an 271018(China)

To elucidate the mechanisms of tolerance to zinc (Zn) deficiency and Zn toxicity in the root of apple trees, the apple rootstock Malus hupehensis (Pamp.) Rehd seedlings were selected to study the responses of organic acids to Zn homeostasis in roots under low Zn (0 μmol L-1 ), adequate Zn (as control, 4 μmol L-1 ) and toxic Zn (100 μmol L-1 ) treatments. The differences of Zn concentrations and accumulations in the roots were highest, compared with those in the stems and leaves, when apple seedlings were subjected to low and toxic Zn treatments for 1 d. The concentrations and accumulations of oxalic and malic acids in the roots in the low and toxic Zn treatments increased by 20% to 60% compared with those of the control treatment. Significantly negative correlations were found between the total Zn concentrations and the concentrations of oxalic and malic acids in the roots under 1 d of low Zn treatment. However, contrary correlations were found for the toxic Zn treatment. Meanwhile, the maximum influx rates of Zn 2+ under low and toxic Zn treatments increased by 30% and 20%, respectively, compared with the rate of the control treatment. Both Zn deficiency and Zn toxicity increased the concentrations of organic acids in root after short-time Zn treatment, which could resist Zn stress through balanding Zn homeostasis in M. hupehensis Rehd.

关键词： Malus hupehensis (Pamp.) Rehd Zn compartmentation Zn deficiency Zn toxicity Zn uptake

Exponential stability and periodic solution for fuzzy BAM Neural networks with time varying delays

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Applied Mathematics(A Journal of Chinese Universities) 2009年第2期24卷 157-166页

作者： XIANG Hong-jun wang jin-hua Department of Mathematics, Xiangnan University, Chenzhou 423000, China Department of Mathematics Xiangnan University Chenzhou 423000 China

In this paper, a class of fuzzy BAM neural networks with time varying delays is discussed. By using the properties of M-matrix, Linear Matrix Inequality（LMI） approach and general Lyapunov-Krasovskii functional, some new sufficient conditions are derived to ensure the existence of periodic solutions and the global exponential stability of the fuzzy BAM neural networks with time varying delays. These results have important significance in the design of global exponential stable BAM networks with delays. Moreover, an example is given to illustrate that the conditions of the results in the paper are feasible.

关键词： fuzzy BAM neural network periodic solution exponential stability linear matrix inequality(LMI) Lyapunov-Krasovskii functional

Dynamic responses of series parallel-plate mesoscopic capacitors to time-dependent external voltage

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Chinese Physics B 2015年第11期24卷 448-451页

作者：王锦华全军 College of Public Administration Huazhong University of Science and Technology School of Physics Science and Technology Lingnan Normal University

We investigate the dynamic responses of the series parallel-plate mesoscopic capacitors to a time-dependent external voltage. The results indicate that the quantum coherence between two capacitors strongly depends on the frequency of the external voltage and the distance between the two capacitors （c-c distance）. The behaviors of the series capacitance incompletely follow the Kirchhoff＇s laws; only in the low frequency case or the limit of the c-c distance, the capacitance approaches to the classical series capacitance. In addition, the real part of the frequency-dependent capacitance shows a maximum and a minimum, which appear around the peak of the imaginary part. These phenomena may be associated with the plasmon excitation in the mesoscopic capacitors.

关键词： electron transport mesoscopic capacitor capacitance quantum coherence

3D-QSAR Studies of Dimethoxyphenoxyphenoxy pyrimidines and Analogues

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Chinese Journal of Structural Chemistry 2000年第2期19卷 107-111页

作者： LI Ai Xiu wang jin Ling SU hua Qing MIAO Fang Ming (Institute of Chemical Crystallography, Tianjin Normal University, Tianjin, 300074) 天津师范大学天津 3 0 0 0 74

Three dimensional quantitative structure activity relationships (3D QSAR) of a series of dimethoxyphenoxyphenoxypyrimidines and analogues which are known to be photosystem Ⅱ(PSⅡ)inhibitors have been studied using comparative molecular field analysis (CoMFA) method. The results suggest that the steric and electronic properties of substitutes at m position on the end phenyl ring have important influence on the Hill reaction inhibition.

关键词： D QSAR photosystem Ⅱinhibitor CoMFA

Withaferin A arrested glioblastoma cells at G2/M phase and induced apoptosis through intrinsic pathway

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中国药理学与毒理学杂志 2019年第9期33卷 696-697页

作者： TANG Qin REN Li-wen LIU jin-yi LI Wan ZHENG Xiang-jin wang jin-hua DU Guan-hua The State Key Laboratory of Bioactive Substance and Function of Natural Medicines Beijing 100050China Key Laboratory of Drug Target Research and Drug Screen Institute of Materia MedicaChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100050China

OBJECTIVE To explore the efficacy and mechanism of withaferin A(WA)in Glioblastoma multiforme(GBM,WHO gradeⅣastrocytoma).METHODS Cell viability assay and nude mice xenograft model were used to evaluate the efficacy of WA in *** cytometry was performed to detection the effects of WA on apoptosis and cell cycle of *** blotting and siRNA transfection were carried out to check signaling pathway induced by *** WA significantly inhibited the growth of GBM in vivo and in *** treatment triggered the intrinsic apoptosis of GBM cells by upregulating expression of Bim and Bad,and arrested GBM cells at G2/M phase through dephosphorylating Thr161 of CDK1 by activating p53-independent p21 *** addition,p21 knockdown restored progress of cell cycle and cell viability by down-regulating the expression of Bad rather than *** WA arrested GBM cells at G2/M phase and triggered the intrinsic apoptosis through p21-Bad axis.

关键词： glioblastoma apoptosis cell cycle p21 Bad

Inoculation with Phosphate-Solubilizing Fungi Diversifies the Bacterial Community in Rhizospheres of Maize and Soybean

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Pedosphere 2007年第2期17卷 191-199页

作者： wang Guang-hua jin Jian XU Mei-Na PAN Xiang-Wen C. TANG Laboratory of Black Soil Ecology Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Harbin 150081 （China）. Department of Agricultural Sciences La Trobe University Bundoora Vic 3086 （Australia）

Application of phosphate-solubilizing microorganisms (PSMs) has been reported to increase P uptake and plant growth. However, no information is available regarding the ecological consequences of the inoculation with PSMs. The effect of inoculation with phosphate-solubilizing fungal (PSF) isolates Aspergillus niger P39 and Penicillium oxalicum P66 on the bacterial communities in the rhizospheres of maize (Zea mays L. 'Haiyu 6') and soybean (Glycine max Merr. 'Heinong 35') was examined using culture-dependent methods as well as a culture-independent method, polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). Compared with the control, the number of culturable microbes for soybean was significantly greater with P39, whereas for maize, the same was significantly greater with P66. In addition, a greater number of microbes were found in the rhizosphere of maize compared with soybean. The fingerprint of DGGE for 16S rDNA indicated that inoculation with PSF also increased bacterial communities, with the P66 treatment having higher numbers of DGGE bands and a higher Shannon-Weaver diversity index compared with P39; the composition of the microbial community was also more complex with the P66 treatment. Overall, complex interactions between plant species and exotic PSMs affected the structure of the bacterial community in the rhizosphere, but plant species were more important in determining the bacterial community structure than the introduction of exotic microorganisms.

关键词： bacterial community diversity PCR-DGGE phosphate-solubilizing fungus rhizosphere