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Journal of Integrative Agriculture 2012年第4期11卷 600-610页

作者： SHEN yi-ping zou Li-fang LI Yu-rong zou Hua-song LIU Xi-ling CHEN Gong-you School of Agriculture and Biology Shanghai Jiao Tong University/Key Laboratory of Urban （South） Ministry of Agriculture Shanghai 200240 P.R. China Department of Plant Protection Nanjing Agricultural University/Key Laboratory of Integrated Management of Crop Diseases and Pests Ministry of Education Nanjing 210095 P.R. China

Xanthomonas oryzae ***（Xoc） causes a destructive bacterial leaf streak disease in *** of the gene products annotated as hypothetical proteins in the genome of Xoc may contribute to its virulence in rice.A mutant,Mxoc1679,screened from our previous Tn5-tagged mutant library for Xoc strain RS105,showed reduced virulence in *** this mutant,a gene named as Xoryp_08180 was disrupted by Tn5 ***_08180 encodes a 1 306-aa hypothetical protein which is highly conserved in Xanthomonas ***-polar mutation of Xoryp_08180 in RS105 strain led to a significant reduction in bacterial virulence and growth in rice,a delayed hypersensitive response（HR） in non-host tobacco,and a decrease in extracellular protease *** deficiencies above were restored to wild-type level in the complementary strain by expressing Xoryp_08180 in *** addition,the expression of Xoryp_08180 was repressed in hrpG and hrpX mutants in planta but not in a nutrient-rich *** results suggested that Xoryp_08180 is a virulence factor required for extracellular protease production,HR induction and full virulence of Xoc.

关键词： Xanthomonas oryzae pv.oryzicola Xoryp_08180 hypothetical protein virulence hypersensitive response extracellular protease

Synthesis, Structure and Geometrical Calculation of a Novel Co-crystal of {[4-Bromo-2-(benzimidazol-2-yl)phenolato][2-(1-butylbenzimidazol-2-yl)phenolato]zinc(Ⅱ)] and Bis[μ-2-(1-butylbenzimidazol-2-yl)phenolato]-1κN^3:2κO;1κO:2κN^3-bis{[2-(1-butylbe

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Chinese Journal of Structural Chemistry 2007年第2期26卷 143-148页

作者： TONG yi-ping Department of Chemistry Hanshan Normal University Chaozhou 521041 China

The title compound has been synthesized and characterized crystallographicaUy. It is a co-crystal consisting of two different neutral zinc（H） complexes with Hbpbm （Hbpbm = 4- bromo-2-（benzimidazol-2-yl）phenol） and Hnpbm （Hnpbm = 2-（1-butylbenzimidazol-2-yl）phenol）. One is a monomeric mixed-ligand complex of [Zn（bpbm）（npbm）] 1 and the other a dimer of [Zn2（npbm）4] 2 with their ratio of 2：1. Thus the overall formula for the title compound is 21.2. Adjacent 1 and 2 are connected to each other by intermolecular hydrogen bonding interactions in the lattice. The crystal data： monoclinic, space group P21/c, a = 15.0141（12）, b = 20.9941（17）, c = 18.4686（15） A, β = 97.445（2）°, V = 5772.4（8） A^3, Mr= 2429.68, Z = 2, Dc = 1.398 g/cm^3,μ = 1.579 -1 mm , F（000） = 2504, R = 0.0637 and wR = 0.1771 for 6464 observed reflections （I 〉 2σ（I））. The geometrical structure for 1 has also been theoretically optimized and compared with the experimental one.

关键词： zinc complex co-crystal structure 4-bromo-2-(1-butylbenzimidazol-2-yl)phenol 2-(1-butylbenzimidazol-2-yl)phenol

Design of highly efficient elliptic curve crypto-processor with two multiplications over GF(2^(163))

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The Journal of China Universities of Posts and Telecommunications 2009年第2期16卷 72-79页

作者： DAN Yong-ping zou Xue-cheng LIU Zheng-lin HAN Yu yi Li-hua The Department of Eleetric Engineering Zhongyuan University of Technology Zhengzhou 450007 China Department of Electronic Science and Technology Huazhong University of Science and Technology Wuhan 430007 China

In this article, a parallel hardware processor is presented to compute elliptic curve scalar multiplication in polynomial basis representation. The processor is applicable to the operations of scalar multiplication by using a modular arithmetic logic unit （MALU）. The MALU consists of two multiplications, one addition, and one squaring. The two multiplications and the addition or squaring can be computed in parallel. The whole computations of scalar multiplication over GF（2^163） can be performed in 3 064 cycles. The simulation results based on Xilinx Virtex2 XC2V6000 FPGAs show that the proposed design can compute random GF（2^163） elliptic curve scalar multiplication operations in 31.17 μs, and the resource occupies 3 994 registers and 15 527 LUTs, which indicates that the crypto-processor is suitable for high-performance application.

关键词： elliptic curve cryptography scalar multiplication finite field parallel design high performance

A New Algorithm for Total Variation Based Image Denoising

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Acta Mathematicae Applicatae Sinica 2012年第4期28卷 721-730页

作者： yi-ping XU School of Science Southwest University of Science and Technology

We propose a new algorithm for the total variation based on image denoising problem. The split Bregman method is used to convert an unconstrained minimization denoising problem to a linear system in the outer iteration. An algebraic multi-grid method is applied to solve the linear system in the inner iteration. Furthermore, Krylov subspace acceleration is adopted to improve convergence in the outer iteration. Numerical experiments demonstrate that this algorithm is efficient even for images with large signal-to-noise ratio.

关键词： image denoising total variation split Bregman method algebraic multi-grid method,Krylov subspace acceleration

Finite-Time Synchronization of Complex Networks With Intermittent Couplings and Neutral-Type Delays

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IEEE/CAA Journal of Automatica Sinica 2023年第10期10卷 2026-2028页

作者： Engang Tian yi zou Hongtian Chen School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China

Dear Editor, This letter focuses on the finite-time synchronization(FTS) of neutral-type complex networks with intermittent couplings. Different from most of the existing references concerning neutral-type systems,a delay-independent dynamical event-triggering controller is considered, operating the same way as the intermittent coupling and excluding the Zeno behavior naturally.

关键词： neutral letter concerning

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Biotransfer of heavy metals along a soil-plant-insect-chicken food chain:Field study

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Journal of Environmental Sciences 2009年第6期21卷 849-853页

作者： ZHUANG ping zou Huiling SHU Wensheng School of Life Sciences and State Key Laboratory of Biocontrol Sun Yat-sen University Guangzhou 510275 Chin Institute of Ecology South China Botanic Garden Chinese Academy of Sciences Guangzhou 510560 China

The accumulation and transfer of Pb,Zn,Cu,and Cd along a soil-plant-insect-chicken food chain at contaminated sites were *** study site nearing the Pb/Zn mine had been contaminated by heavy metals *** and Pb concentrations steadily declined with increasing trophic level（p 〈 0.01）,but concentrations of Zn and Cu slightly increased from plant to insect larva（p 〉 0.05）.The concentrations of heavy metals were the highest in chicken muscle,with lower values in liver and *** bioaccumulation of Pb was observed in chicken *** eliminations of Pb,Zn,Cu,and Cd via insect and chicken feces avoid metal bioaccumulation in insect and chicken *** results suggest that the accumulation of heavy metals in specific animal organ of tissues could not be neglected,although transfer of metals to chicken from plant and insect was limited.

关键词： heavy metal food chain insect chicken field study

A novel low-voltage high precision current reference based on subthreshold MOSFETs

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第1期8卷 50-55页

作者： YU Guo-yi zou Xue-eheng Department of Electronic Science ＆ Technology Huazhong University of Science and Technology Wuhan 430074 China

A novel topology low-voltage high precision current reference based on subthreshold Metal-Oxide-Semiconductor Field Effect Transistors （MOSFETs） is presented. The circuit achieves a temperature-independent reference current by a proper combination current of two first-order temperature-compensation current references, which exploit the temperature characteristics of integrated poly2 resistors and the 1- V transconductance characteristics of MOSFET operating in the subthreshold region. The circuit, designed with the 1 st silicon 0.35 μm standard CMOS logic process technology, exhibits a stable current of about 2.25 μA with much low temperature coefficient of 3 × 10^-4μA/℃ in the temperature range of-40-150 ℃ at 1 V supply voltage, and also achieves a better power supply rejection ratio （PSRR） over a broad frequency. The PSRR is about -78 dB at DC and remains -42 dB at the frequency higher than 10 MHz. The maximal process error is about 6,7% based on the Monte Carlo simulation. So it has good process compatibility.

关键词： Current reference Curvature-compensation Low voltage Subthreshold CMOS integrated circuit

Characterization of Quantitative Trait Loci for Grain Minerals in Hexaploid Wheat (Triticum aestivum L.)

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Journal of Integrative Agriculture 2013年第9期12卷 1512-1521页

作者： SHI Rong-li TONG yi-ping JING Rui-lian ZHANG Fu-suo zou Chun-qin Center for Resources Environment and Food Security/Department of Plant NutritionChina Agricultural University State Key Laboratory of Plant Cell and Chromosome Engineering Ministry of Science and Technology/Institute of Genetics and Developmental BiologyChinese Academy of Sciences Institute of Crop Science Chinese Academy of Agricultural Sciences

Wheat is an important source of essential minerals for human body. Breeding wheat with high grain mineral concentration thus benefits human health. The objective of present study was to identify quantitative trait loci （QTLs） controlling grain mineral concentration and to evaluate the relation between nitrogen （N） and other essential minerals in winter wheat. Wheat grains were harvested from field experiment which conducted in China and analyzed for this purpose. Forty-three QTLs controlling grain mineral concentration and nitrogen-related traits were detected by using a double haploid （DH） population derived from winter wheat varieties Hanxuan 10 and Lumai 14. Chromosomes 4D and 5A might be very important in controlling mineral status in wheat grains. Significant positive correlations were found between grain nitrogen concentration （GNC） and nutrients Fe, Mn, Cu, Mg concentrations （FeGC, MnGC, CuGC, MgGC）. Flag leafN concentration at anthesis （FLNC） significantly and positively correlated with GNC, FeGC, MnGC, and CuGC. The study extended our knowledge on minerals in wheat grains and suggested which interactions between minerals should be considered in future breeding program.

关键词： grain minerals nitrogen QTLs winter wheat

Effect of Electronic Correlations on Magnetotransport through a Parallel Double Quantum Dot

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Chinese Physics Letters 2012年第3期29卷 197-200页

作者： FANG Dong-Kai WU Shao-Quan zou Cheng-yi ZHAO Guo-ping College of Physics and Electronic Engineering Sichuan Normal UniversityChengdu 610068

We theoretically investigate the effect of electronic correlations(including spin and Coulomb correlations)on magnetotransport through a parallel double quantum dot coupled to ferromagnetic *** the framework of the generalized master equation,we analyze the current,differential conductance and tunnel magnetoresistance versus bias for different electron *** results reveal that spin correlations can induce a giant tunnel magnetoresistance,while Coulomb correlations can lead to the occurrence of negative tunnel magetoresistance and negative differential conductance,and the relevant underlying physics of this problem is discussed.

关键词： magnetoresistance conductance ferromagnetic

A Combination Model for Image Denoising

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Acta Mathematicae Applicatae Sinica 2016年第3期32卷 781-792页

作者： yi-ping XU School of Science Southwest University of Science and Technology

In this paper, we propose an efficient combination model of the second-order ROF model and a simple fourth-order partial differential equation （PDE） for image denoising. The split Bregman method is used to convert the nonlinear combination model into a linear system in the outer iteration, and an algebraic multigrid method is applied to solve the linear system in the inner iteration. Furthermore, Krylov subspace acceleration is adopted to improve convergence in the outer iteration. At the same time, we prove that the model is strictly convex and exists a unique global minimizer. We have also conducted a variety of numerical experiments to analyze the parameter selection criteria and discuss the performance of ~he fourth-order PDE in the combination model. The results show that our model can reduce blocky effects and our algorithm is efficient and robust to solve the proposed model.

关键词： image denoising partial differential equations split Bregman method algebraic multi-grid method Krylov subspace acceleration