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Topologically conjugate classifications of the translation actions on low-dimensional compact connected lie groups

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Science China Mathematics 2021年第5期64卷 963-1010页

作者： Xiaotian pan Bingzhe Hou School of Mathematics Jilin UniversityChangchun 130012China

In this article, we focus on the left translation actions on noncommutative compact connected lie groups with topological dimension 3 or 4, consisting of SU(2), U(2), SO(3), SO(3)×S^(1) and Spin ^(C)(3). We define the rotation vectors(numbers) of the left actions induced by the elements in the maximal tori of these groups, and utilize rotation vectors(numbers) to give the topologically conjugate classification of the left actions. Algebraic conjugacy and smooth conjugacy are also considered. As a by-product, we show that for any homeomorphism f : l(p,-1) × S^(1)→ l(p,-1) × S^(1), the induced isomorphism(π■f■i)_(*) maps each element in the fundamental group of l(p,-1) to itself or its inverse, where i : l(p,-1) → l(p,-1) × S^(1) is the natural inclusion and π : l(p,-1) × S^(1)→ l(p,-1) is the projection.

关键词： topological conjugacy rotation vectors translation actions C~*-dynamical system classification

Preparation Process and Properties of Porous Ecological Concrete

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武汉理工大学学报 2010年第17期32卷 256-260页

作者： lIANG l M YU H F pan Z F Department of Civil Engineering Nanjing University of Aeronautics &AstronauticsNanjing 210016China

By using waste bricks as aggregate,a kind of porous ecological concrete was prepared and the mixing technique and its properties were studied. Effects of the cement paste fluidity on workability of the porous ecological concrete were investigated,and influences of the water-cement ratio,the aggregate-cement ratio and the aggregate size on compressive strength and porosity of the porous ecological concrete were also discussed. Results show that for preparation of the porous ecological concrete,the aggregates should be enveloped with neat cement paste,and recommended fluidity of the cement paste is 200～235 mm. With the increasing of the aggregate-cement ratio,porosity of the porous ecological concrete increases while the 28 d compressive strength decreases. With increasing of the water-cement ratio,porosity of the porous ecological concrete decreases. And relationship between compressive strength and water-cement ratio of the porous ecological concrete does not follow Bolomey's formula. As a result of this study the porous ecological concrete is prepared,its porosity is 38.93%,the water absorption is 11.39% and the compressive strength is 1.14 MPa.

关键词： aggregate-cement ratio water-cement ratio aggregate size on fluidity of cement paste porous ecological concrete process of paste encapsulated stone porosity compressive strength

Magneto-Impedance Effect of Composite Wires Prepared by Chemical Plating under DC Current

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Nano-Micro letters 2014年第3期6卷 227-232页

作者： D.l.Chen X.li H.l.pan H.Y.luan Z.J.Zhao Department of Physics Engineering Research Center for Nanophotonics & Advanced Instrument Ministry of Education East China Normal University

CuBe composite wires of 100 μm in diameter coated with a layer of NiCoP were prepared by a chemical plating method under DC current(CPUDC). The influences of DC current on coating morphology,deposition rate, composition, giant magneto-impedance(GMI) effect and magnetic properties were *** was shown that the circumferential domain structure of coating layer was induced by the DC current going through the wires. A maximum GMI ratio of 870% was obtained in the composite wire prepared under 150 m A and tested at 180 k Hz. It is 30 times higher than that of the composite wire plated in the same condition by conventional chemical plating method, indicating that CPUDC is an easy and effective approach to obtain composite wires and its applications will be further extended on magnetic sensors.

关键词： GMI Chemical plating Magnetic properties

激光结合螺旋藻增强FeSO_(4)诱导鼠伤寒沙门氏菌和单核细胞增生李斯特菌铁死亡的发生机制

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食品科学 2025年第2期46卷 8-19页

作者：孙晋跃潘佳能陈奕颖刘人诚周文文浙江大学生物系统工程与食品科学学院浙江杭州310058

为探究激光(laser,l)结合螺旋藻(Spirulina platensis,SP)增强FeSO_(4)(Fe)诱导鼠伤寒沙门氏菌(Salmonella enterica serovar Typhimurium,ST)和单核细胞增生李斯特氏菌(listeria monocytogenes,lM)铁死亡发生的机制,研究不同处理后菌体细胞脂质过氧化、活性氧、谷胱甘肽变化,形态特征、细胞膜损伤和关键基因的表达等。结果表明,经l结合SP处理后FeSO4的杀菌效果显著增强,且4 mmol/l Fe+SP+l处理后ST和lM的菌数均降低至lg(CFU/ml))。此外,Fe+SP+l处理使得微生物细胞的脂质过氧化水平和活性氧升高,谷胱甘肽的比例降低,菌体细胞膜完整性受到破坏,细胞膜的通透性增加,膜电位降低,进而导致菌体的核酸和蛋白泄漏增加,最终导致菌体死亡。此外,抑制生物被膜实验和生物被膜杀菌实验表明4 mmol/l Fe+SP+l处理对2种菌生物被膜的形成具有很好的控制作用。最后,4 mmol/l Fe+SP+l处理可使得生菜上ST和lM的数量分别显著降低至4.63(lg(CFU/g))和4.60(lg(CFU/g))。综上,Fe+SP+l处理可以显著降低游离状态和生物膜状态下ST和lM的数量,具有较好的控制生菜等食品表面食源性致病菌的潜力。

关键词：激光螺旋藻铁死亡脂质过氧化生物被膜

Convergence Analysis of Splitting-Up Algorithm of the Zakai’s Equation with Correlated Noises

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Journal of Systems Science & Complexity 2023年第3期36卷 922-946页

作者： lUO Xue pan Ting DONG Wenhui School of Mathematical Sciences Beihang University(Shahe Campus)Beijing 102206China Key laboratory of Mathematics Informatics and Behavioral Semantics(LMIB)Beihang UniversityBeijing 100191China School of Mathematics and Statistics Shaanxi Normal UniversityXi’an 710119China

In the field of nonlinear filtering(NlF),it is well-known that the unnormalized conditional density of the states satisfies the Zakai’s *** splitting-up algorithm has been first studied in the independent noises case by Bensoussan,et al.(1990).In this paper,the authors extend this convergence analysis of the splitting-up algorithm to the correlated noises’*** a time discretization,one splits the solution of the Zakai’s equation into two interlacing processes(with possibly computational advantage).These two processes correspond respectively to the prediction and *** certain conditions,the authors show that both processes tend to the solution of the Zakai’s equation,as the time step goes to *** authors specify the conditions imposed on the way of splitting-up to guarantee the *** major technical difficulty in the correlated noises’case,compared with the independent case,is to control the gradient of the second process in some *** illustrate the potentially computational advantage of the schemes based on the splitting-up ways,the authors experiment on a toy NlF model using the feedback particle filter(FPF)developed based on the splitting-up method and the sampling importance and resampling(SIR)as *** FPF outperforms in both accuracy and efficiency.

关键词： Convergence analysis correlated noises nonlinear filtering splitting-up algorithm

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高中历史教学中融入国家安全教育的路径探索

黑龙江教师发展学院学报 2025年第1期44卷 113-116页

作者：叶宇潘德昌渤海大学历史文化学院辽宁锦州121013

在高中历史教学中融入国家安全教育不仅是维护新时代国家安全的现实需求,而且也是进一步落实历史学科育人价值的重要举措。在明确高中历史教学中融入国家安全教育的学科优势的基础上,阐述融入国家安全教育时应遵循的基本原则,进而探讨... 详细信息

在高中历史教学中融入国家安全教育不仅是维护新时代国家安全的现实需求,而且也是进一步落实历史学科育人价值的重要举措。在明确高中历史教学中融入国家安全教育的学科优势的基础上,阐述融入国家安全教育时应遵循的基本原则,进而探讨提升教师的融入意识,拓展历史教学中国家安全教育的素材资源,丰富历史教学中国家安全教育的教学方法,推行国家安全教育评价理念和方式一体化等实施路径,以期筑牢学生国家利益至上的观念,实现培养具有国家安全素养的时代新人的育人目标。

关键词：国家安全教育高中历史路径

A Comprehensive Pipeline for Complex Text-to-Image Synthesis

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Journal of Computer Science & Technology 2020年第3期35卷 522-537页

作者： Fei Fang Fei luo Hong-pan Zhang Hua-Jian Zhou Alix l.H.Chow Chun-Xia Xiao School of Computer Science Wuhan UniversityWuhan 430072China Xiaomi Technology Co.lTD Beijing 100085China

Synthesizing a complex scene image with multiple objects and background according to text description is a challenging *** needs to solve several difficult tasks across the fields of natural language processing and computer *** model it as a combination of semantic entity recognition,object retrieval and recombination,and objects’status *** reach a satisfactory result,we propose a comprehensive pipeline to convert the input text to its visual *** pipeline includes text processing,foreground objects and background scene retrieval,image synthesis using constrained MCMC,and ***,we roughly divide the objects parsed from the input text into foreground objects and background ***,we retrieve the required foreground objects from the foreground object dataset segmented from Microsoft COCO dataset,and retrieve an appropriate background scene image from the background image dataset extracted from the ***,in order to ensure the rationality of foreground objects’positions and sizes in the image synthesis step,we design a cost function and use the Markov Chain Monte Carlo(MCMC)method as the optimizer to solve this constrained layout ***,to make the image look natural and harmonious,we further use Poisson-based and relighting-based methods to blend foreground objects and background scene image in the post-processing *** synthesized results and comparison results based on Microsoft COCO dataset prove that our method outperforms some of the state-of-the-art methods based on generative adversarial networks(GANs)in visual quality of generated scene images.

关键词： image synthesis scene generation text-to-image conversion Markov Chain Monte Carlo(MCMC)

Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode

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Chinese Journal of Chemical Physics 2016年第6期29卷 729-734,I0002页

作者： li-wen Wang Shou-guo Wu Tian-yang Shi Wei Wei pan pan Departmentol:Chemistry UniversityofScienceandTechnologyofChinaHefei230026China

Carboxyl graphene modified CuxO/Cu electrode was fabricated. The bare copper electrode was firstly anodic polarized in 1.0 mol/l NaOH solution in order to get CuxO nanoparticles, then the carboxyl graphene （CG） was electrodeposited on the CuxO/Cu electrode by cyclic potential sweeping. The electrocatalytic oxidation behaviors of calcium folinate （CF） at the graphene modified CuxO/Cu electrode were investigated by cyclic voltammetry. A positive scan polarization reverse catalytic voltammetry was used to obtain the pure catalytic oxidation current. The graphene modified CuxO/Cu electrode was served as the electrochemical sensor of CF, a highly sensitivity of 22.0μA.（μmol/μl）^-1cm^-2 was achieved, and the current response was linear with increasing CF concentration in the range of 2.0×10^-7 mol/l to 2.0×10^-5 mol/l, which crossed three orders of magnitude, and the detection limit was found 7.6×10^-5 mol/l （S/N=3）. In addition, the proposed sensor was successfully applied in determination of CF in drug sample.

关键词： Calcium folinate Carboxyl graphene CuxO/Cu electrode Chemically modi-fied electrode Positive scan polarization reverse catalytic voltammetry

Transcriptome Analysis of Female and Male Henosepilachna vigintioctopunctata(Coleoptera:Coccinellidae)Identifies Sex-related Genes

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Horticultural Plant Journal 2021年第2期7卷 142-148页

作者： Wei Guo Zhuoqi liu Jiaqi Yu Jing lü Xiaoguo Jiao lan Kong Chunxiao Yang Huipeng pan Key laboratory of Bio-Pesticide Innovation and Application of Guangdong Province Engineering Technology Research Center of Agricultural Pest Biocontrol of Guangdong ProvinceSouth China Agricultural UniversityGuangzhou 510642China State Key laboratory of Biocatalysis and Enzyme Engineering Center for Behavioral Ecology&EvolutionSchool of Life SciencesHubei UniversityWuhan 430062China Department of Computer Science Eastern Kentucky UniversityRichmond KY 40475USA State Key laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou 510642China

Henosepilachna vigintioctopunctata is an emerging horticultural pest of Solanaceae plants in ***,we employed transcriptome sequencing of three female and three male *** libraries to identify sex-related *** recorded 281599294 bp of clean reads,and de novo assembly generated 85206 unigenes,with N_(50) of 1311 bp and average length of 763 *** found 5002 genes highly expressed in males and 2179 genes highly expressed in *** profiles of six unigenes specific to females,six unigenes specific to males,and ten unigenes common to both sexes were verified using semi-quantitive RT-PCR;results showed expression levels of these 22 unigenes were relatively consistent with the transcriptome *** all unigenes as references,we identified 6657 putative simple sequence *** transcriptome sequences and gene expression profiles of female and male *** help explore genetic mechanisms of sexual dimorphism.

关键词： Henosepilachna vigintioctopunctata sex RNA-seq transcriptome annotation differential expression