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Comparison of rhizosphere and endophytic microbial communities of Chinese leek through high-throughput 16S rRNA gene Illumina sequencing

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Journal of Integrative Agriculture 2018年第2期17卷 359-367页

作者： HUANG yong-hong College of Horticulture Qingdao Agricultural University

Chinese leek（Allium tuberosum Rottler ex Sprengel） is a common vegetable in China. In our previous study, Chinese leek in rotation was found to have significant antifungal and nematicidal activity. This study＇s aim was to investigate the potential antifungal and nematicidal activity associated with rhizosphere or endophytic microbes of Chinese leek. Thus, a total of 79 261 high-quality sequences were obtained from Chinese leek rhizosphere soil, leaf and root samples. In the rhizosphere soil, the bacterial community comprised five dominant phyla： Proteobacteria（37.85%）, Acidobacteria（10.99%）, Bacteroidetes（8.24%）, Cyanobacteria（7.79%） and Planctomycetes（7.1%）. The leaf and root bacterial communities comprised two dominant phyla： Cyanobacteria（83.42% in leaf and 75.44% in root） and Proteobacteria（14.75% in leaf and 21.04% in root）. Microbial diversity, richness and evenness in the rhizosphere soil bacterial community were higher than that in the endophytic bacterial communities. The rhizosphere bacterial community was significantly different from the endophytic bacterial communities. The endophytic bacterial communities from the leaf and the root were slightly, but not significantly different from each other. This study＇s findings would contribute to the isolation and identification of nematicidal and antifungal bacterial communities in Chinese leek.

关键词： Allium tuberosum Rottler ex Sprengel rhizosphere soil endophyte bacterial community Illumina sequencing

Action Recognition and Detection Based on Deep Learning: A Comprehensive Summary

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Computers, Materials & Continua 2023年第10期77卷 1-23页

作者： yong Li Qiming Liang Bo gan Xiaolong Cui College of Information Engineering Engineering University of PAPXi’an710086China PAP of Heilongjiang Province Heihe DetachmentHeihe164300China National Key Laboratory of Science and Technology on Electromagnetic Energy Naval University of EngineeringWuhan430033China Joint Laboratory of Counter Terrorism Command and Information Engineering Engineering University of PAPXi’an710086China

Action recognition and detection is an important research topic in computer vision,which can be divided into action recognition and action *** present,the distinction between action recognition and action detection is not clear,and the relevant reviews are not ***,this paper summarized the action recognition and detection methods and datasets based on deep learning to accurately present the research status in this ***,according to the way that temporal and spatial features are extracted from the model,the commonly used models of action recognition are divided into the two stream models,the temporal models,the spatiotemporal models and the transformer models according to the *** this paper briefly analyzes the characteristics of the four models and introduces the accuracy of various algorithms in common data ***,from the perspective of tasks to be completed,action detection is further divided into temporal action detection and spatiotemporal action detection,and commonly used datasets are *** the perspectives of the twostage method and one-stage method,various algorithms of temporal action detection are reviewed,and the various algorithms of spatiotemporal action detection are summarized in ***,the relationship between different parts of action recognition and detection is discussed,the difficulties faced by the current research are summarized in detail,and future development was prospected。

关键词： Action recognition action detection deep learning convolutional neural networks dataset

A Symmetric Key Exchange Protocol Bsaed on Virtual S-Box

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China Communications 2014年第A2期11卷 46-52页

作者： YIN Yifeng gan yong WEN Heyu LI Tianbao School of Computer and Communication Engineering Zhengzhou University of Light Industry Zhengzhou 450002 China

Based on the theory of polymorphic virtual S-box, the paper presents a symmetric key exchange protocol to solve the problem of session keys delete shared in the computational complexity temporary trading scenario. Both parties jointly construct a highly nonlinear SPN core algorithm. The paper the connotation of polymorphic cipher theory, making use of the method of self-compiler based expansion factor to collect random parameter sets held by each of the parties containing its own information 5-tuple private keys array Kpa[5] and Kpb[5].The more efficient polymorphism virtual S-box is constructed. The method of secret split for the public key cryptography features can be implemented by symmetry cipher system. The research results will provide a theoretical basis to solve the key exchange problems for short- term communications partner based on symmetric cryptography.

关键词： virtual S-box the virtual iterativefunction (VIF) secrecy sub-systems

基于第一性原理和热力学计算的TiAl-Nb金属间化合物稳定性和相关系研究

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原子与分子物理学报 2025年第5期42卷 151-162页

作者：汪文洋徐勇田彬甘信柱王志刚梁永锋林均品山东建筑大学材料科学与工程学院济南250101 北京科技大学新金属材料国家重点实验室北京100083

采用基于广义梯度近似密度泛函理论的第一性原理计算和相图计算方法,研究了TiAl-Nb合金中γ、α_(2)、O_(2)和ωo相的热力学和力学性质以及相转变关系.研究表明,第一性原理计算得到的化合物相的参数是准确的,且分析结果与相图计算结果... 详细信息

采用基于广义梯度近似密度泛函理论的第一性原理计算和相图计算方法,研究了TiAl-Nb合金中γ、α_(2)、O_(2)和ωo相的热力学和力学性质以及相转变关系.研究表明,第一性原理计算得到的化合物相的参数是准确的,且分析结果与相图计算结果相一致.四个化合物相都是能够稳定存在的相.通过热力学和力学性质的分析,发现α_(2)相更容易转变为O_(2)相,并且在一定条件下可以通过相变反应生成ωo相.而γ相更容易转变为ωo相,但无法生成O_(2)相.

关键词： TiAl合金第一性原理相图声子谱及态密度热力学性质

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Synergistic Effect of Multi-Arm Architecture and Molecular Weight on Crystallization and Degradation Behavior of Star-Shaped Poly(Lactic Acid)

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Chinese Journal of Polymer Science 2024年第12期42卷 1948-1956,I0009页

作者： Nan Tian Yi-Qing Li hong-Yi gan Zhen-Bo Ning Ni Jiang Zhi-Hua gan State Key Laboratory of Organic-inorganic Composites Beijing Laboratory of BiomaterialsCollege of Life Science and TechnologyBeijing University of Chemical TechnologyBeijing100029China Institute of Material Sinopec Beijing Research Institute of Chemical IndustryBeijing100013China

Star-shaped poly(lactic acid)s(PLAs)with two to five arms were synthesized by ring opening polymerization using tin(II)2-ethylhexanoate as catalyst and polyols as *** effects of molecular weight together with multi-arm architecture on crystallization behavior,spherulite morphology and alkaline degradation behavior of star-shaped PLAs have been *** results indicate that the multi-arm architecture interfered with spherulite growth,but promoted nucleation and alkaline degradation of star-shaped ***,with the increase of molecular weight(M_(n)),the crystallization rate first increased and then decreased,while the alkaline degradation rate was the *** characteristic crystallization and alkaline degradation behavior of star-shaped PLAs were discussed based on the competition between segmental mobility and central core confinement.

关键词： Star-shaped poly(lactic acid) Crystallization Spherulite morphology Alkaline degradation

The “Inverse Hall-Petch” effect on the impact response of single crystal copper

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Acta Mechanica Sinica 2012年第4期28卷 1042-1048页

作者： Zhen Chen Shan Jiang. yong gan State Key Laboratory of Structural Analysis for IndustrialEquipment Department of Engineering MechanicsDalian University of Technology 116024 Dalian China Department of Civil and Environmental Engineering University of Missouri Columbia MO 65211 USA Department of Engineering Mechanics Zhejiang University 310027 Zhejiang China

Based on the available experimental and compu- tational capabilities, a phenomenological approach has been proposed to formulate a hypersurface in both spatial and temporal domains to predict combined specimen size and load- ing rate effects on the material properties [ 1-2]. A systematic investigation is being performed to understand the combined size, rate and thermal effects on the properties and deformation patterns of representative materials with different nanos- tructures and under various types of loading conditions [3- 16]. The recent study on the single crystal copper response to impact loading has revealed the size-dependence of the Hugoniot curve. In this paper, the ＂inverse Hall-Petch＂ behavior as observed in the impact response of single crystal copper, which has not been reported in the open literature, is investigated by performing molecular dynamics simulations of the response of copper nanobeam targets subjected to impacts by copper nanobeam flyers with different impact velocities. It appears from the preliminary results that the ＂inverse Hall-Petch＂ behavior in single crystal copper is mainly due to the formation and evolution of disordered atoms and the interaction between ordered and disordered atoms, as compared with the physics behind the ＂inverse Hall-Petch＂behavior as observed in nanocrystalline materials

关键词： Combined size and rate effects Inverse Hall- Petch effect ~ Single crystals

Every Sub-Riemannian Manifold Is the Gromov–Hausdorff Limit of a Sequence Riemannian Manifolds

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Acta Mathematica Sinica,English Series 2017年第11期33卷 1565-1568页

作者： yong hong HUANG School of Mathematical Science Capital Normal UniversityBeijing 100048P.R.China Qiannan Preschool Education College for Nationalities Guiding County of Guizhou Province558000P.R.China

In this paper, we will show that every sub-Riemannian manifold is the Gromov-Hausdorff limit of a sequence of Riemannian manifolds.

关键词： Riemannian manifold Sub-Riemannian manifold Gromov-Hausdorff convergence

Mineral transition and formation mechanism of calcium aluminate compounds in CaO-Al2O3-Na2O system during high-temperature sintering

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International Journal of Minerals,Metallurgy and Materials 2020年第7期27卷 924-932页

作者： Hai-yan Yu Xiao-lin Pan yong-pan Tian gan-feng Tu School of Metallurgy Northeastern UniversityShenyang 110819China

The mineral transition and formation mechanism of calcium aluminate compounds in CaO-Al2O3-Na2O system during the hightemperature sintering process were systematically investigated using DSC-TG,XRD,SEM-EDS,FTIR,and Raman spectra,and the crystal structure of Na4Ca3(AlO2)10 was also simulated by Material Studio *** results indicated that the minerals formed during the sintering process included Na4Ca3(AlO2)10,CaO·Al2O3,and 12 CaO·7 Al2O3,and the content of Na4Ca3(AlO2)10 could reach 92 wt%when sintered at 1200°C for 30 *** main formation stage of Na4Ca3(AlO2)10 occurred at temperatures from 970 to 1100°C,and the content could reach82 wt%when the reaction temperature increased to 1100°*** crystal system of Na4Ca3(AlO2)10 was tetragonal,and the cells preferred to grow along crystal planes(110)and(210).The formation of Na4Ca3(AlO2)10 was an exothermic reaction that followed a secondary reaction model,and its activation energy was 223.97 kJ/mol.

关键词： calcium aluminate sodium oxide crystal structure formation kinetics sintering

Numerical Solutions of a Class of Nonlinear Evolution Equations with Nonlinear Term of Any Order

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Communications in Theoretical Physics 2008年第3期49卷 579-584页

作者： AN hong-Li CHEN yong Nonlinear Science Center and Department of Mathematics Ningbo University Ningbo 315211 China Institute of Theoretical Computing East China Normal University Shanghai 200062 China Key Laboratory of Mathematics Mechanization the Chinese Academy of Sciences Beijing 100080 China

In this paper, the Adomian decomposition method is developed for the numerical solutions of a class of nonlinear evolution equations with nonlinear term of any order, utt＋auxx ＋ bu ＋ cu^p＋ du^2p-1=0, which contains some important famous equations. When setting the initial conditions in different forms, some new generalized numerical solutions： numerical hyperbolic solutions, numerical doubly periodic solutions are obtained. The numerical solutions are compared with exact solutions. The scheme is tested by choosing different values of p, positive and negative, integer and fraction, to illustrate the efficiency of the ADM method and the generalization of the solutions.

关键词： Adomian decomposition method nonlinear evolution equations Jacobi elliptic function numerical solution