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N指标d维广义α-stable过程的逗留时

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武汉大学学报（理学版） 2002年第3期48卷 274-280页

作者：郑水草胡迪鹤武汉大学数学与统计学院湖北武汉430072 集美大学基础教学部福建厦门361021

研究了一类新过程——广义α-stable过程,它包含了N指标d维α-stable过程和N指标d维广义布朗单.导出了一些与该过程的逗留时有关的小概率事件的界.这些界有助于确定该过程的样本轨道的确切的Hausdorff测度函数.

关键词： N指标 d维广义α-stable过程逗留时稳定过程广义布朗单

Mathematical Model of the Identical Slope Surface

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wuhan {1. Journal of Natural Sciences 2002年第1期7卷 54-58页

作者： hu Jian-guo 1, Chen yue-ping 2 1. school of Urban Studies,wuhan university,wuhan 430072, hubei, china 2.College of Politics and Administration,wuhan university, wuhan 430072,hubei, china school of Urban Stu{1.es Wuhan University Wuhan Hubei China College of Politics and Administration Wuhan University Wuhan Hubei China

The formation of the identical slope surface and the method of construction are discussed. On the basement of building the parameter equation of variable-radius circle family envelope, the frequently used parameter equation of the identical slope surface of the top of taper moving along column helix, horizental arc and line is built. The equation can be used to construct the identical slope surface’s contours, gradient lines and three dimensional figures correctly.

关键词： Key words identical slope surface family of circles mathematical model envelope elevation projection contours

The construction of Markov processes in random environments and the equivalence theorems

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Science china {1. 2004年第4期47卷 481-496页

作者： hu {1.heschool of mathematics and statistics, wuhan university, wuhan 430072, china school of {1. and statistics Wuhan University Wuhan China

In sec.1. we introduce several basic concepts such as random transition function, p-m process and Markov process in random environment and give some examples to construct a random transition function from a non-homogeneous density function. In sec.2, we construct the Markov process in random enviromment and skew product Markov process by p - m process and investigate the properties of Markov process in random environment and the original process and environment process and skew product process. In sec. 3, we give several equivalence theorems on Markov process in random environment.

关键词： radom transition function, p -m process, Markov process in random environment, skew product Markov process, density function.

Recent advances and challenges of nitrogen/nitrate electro catalytic reduction to ammonia synthesis

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Frontiers in Energy 2024年第2期18卷 128-140页

作者： Junwen cao Yikun {1. Yun zheng Wenqiang ZHANG Bo YU Institute of Nuclear and New Energy Technology(INET) Collaborative Innovation Center of Advanced Nuclear Energy TechnologyTsinghua UniversityBeijing 100084China Department of Chemical Engineering University of WaterlooWaterlooOntario N2L 3G1Canada Institute of New Energy Materials and Engineering School of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The Haber-Bosch process is the most widely used synthetic ammonia technology at *** its invention,it has provided an important guarantee for global food ***,the traditional Haber-Bosch ammonia synthesis process consumes a lot of energy and causes serious environmental *** the serious pressure of energy and environment,a green,clean,and sustainable ammonia synthesis route is urgently *** synthesis of ammonia is a green and mild new method for preparing ammonia,which can directly convert nitrogen or nitrate into ammonia using electricity driven by solar,wind,or water energy,without greenhouse gas and toxic gas ***,the basic mechanism of the nitrogen reduction reaction(NRR)to ammonia and nitrate reduction reaction(NO_(3)^(-))to ammonia were *** representative approaches and major technologies,such as lithium mediated electrolysis and solid oxide electrolysis cell(SOEC)electrolysis for NRR,high activity catalyst and advanced electrochemical device fabrication for(NO_(3)^(-))RR and electrochemical ammonia synthesis were *** on the above discussion and analysis,the main challenges and development directions for electrochemical ammonia synthesis were further proposed.

关键词： electrochemical ammonia synthesis nitrogen nitrate nitrogen reduction reaction(NRR)to ammonia nitrate reduction reaction(NO_(3)^(-))RR

Phase Engineering of MXene Derivatives Via Molecular Design for High-Rate Sodium-Ion Batteries

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Energy & Environmental Materials 2024年第5期7卷 126-134页

作者： hui Zhang Xingwu Zhai Xin {1. Zhihao Liu Xinfeng Tang Zhihong hu Hang Wang Zhandong Wang Yang Xu Wei he Wei zheng Min Zhou zheng Ming Sun hefei National Laboratory for Physical Sciences at the Microscale School of Chemistry and Materials Science University of Science and Technology of China school of Materials Science and Engineering Southeast University National Synchrotron Radiation Laboratory University of Science and Technology of China Department of Chemistry University College London school of C{1.mistry and C{1.mical Engineering Southeast University

Since 201., research into MXene derivatives has seen a dramatic rise; further progress requires a rational design for specific functionality. herein, through a molecular design by selecting suitable functional groups ... 详细信息

Since 2019, research into MXene derivatives has seen a dramatic rise; further progress requires a rational design for specific functionality. herein, through a molecular design by selecting suitable functional groups in the MXene coating, we have implemented the dual N doping of the derivatives,nitrogen-doped TiO2@nitrogen-doped carbon nanosheets （N-TiO2@NC）, to strike a balance between the active anatase TiO2at low temperatures, and carbon activation at high temperatures. The NH3reduction environment generated at 400℃as evidenced by the in situ pyrolysis SVUV-PIMS process is crucial for concurrent phase engineering. With both electrical conductivity and surface Na+availability, the N-TiO2@NC achieves higher interface capacitive-like sodium storage with long-term stability. More than100 mAh g-1is achieved at 2 A g-1after 5000 cycles. The proposed design may be extended to other MXenes and solidify the growing family of MXene derivatives for energy storage.

关键词： high-rate sodium-ion batteries molecular design MXene derivative phase engineering

Durinskia baltica(dinophyceae),a newly recorded species and genus from{1., and its systematics

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Journal of Systematics and Evolution 2011年第5期49卷 476-485页

作者： 1.2~Qi ZHANG 1.Guo-Xiang LIU 1.zheng-Yu {1. 1.State Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,wuhan 430072,china) 2(Graduate university,Chinese Academy of Sciences,Beijing 1.0049,china) (State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China) (Graduate university Chinese Academy of Sciences Beijing 100049 China)

A freshwater dinoflagellate was identified as Durinskia baltica(Levander) Carty & Cox by morphological characteristics,with t{1. plate formula:Po,x,4,2a,6,5c,4s,5,*** was a newly recorded dinoflagellate genus for china with two anterior intercalary plates and six characteristic precingular *** sequences of t{1. small and large subunit ribosomal DNA and internal transcribed spacer sequences for t{1. dinoflagellate cells were obtained from field *** phylogenetic results indicated Durinskia species could cluster into a monophyletic group,which were distinct from Peridinium *** to morphological and molecular evidence,it was agreed that t{1. genus Durinskia was separated from t{1. genus Peridinium,which could be a polyphyletic *** addition,*** was an infrequent diatom-harboring dinoflagellate which was known to possess an endosymbiotic diatom or diatom-like *** phylogenetic analyses indicated that *** had a close affinity with Peridiniopsis penardii and ***,common freshwater bloom-forming species in china.

关键词： china Durinskia Durinskia baltica new record phylogeny.

Research on Alkaline Filler Flame-Retarded Asphalt Pavement

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Journal of wuhan university of Technology(Materials Science) 2006年第3期21卷 146-148页

作者：胡曙光 school of Materials Science and Engineering Wuhan University of Technology Wuhan 430070China

Used as flame returdant of tunnel asphalt pavement, organic bromides produce a large amount of poisons and smoke in construction and flame retardation stage. The alkaline filler was found to replace mineral filler, and the flame- retarded asphalt mixtures were produced. Experimental results show that these asphalt mixtures are smoke restrained ; the performances and construction technology of asphalt pavement are not influenced; also the alkaline filler is of low-price. So this kind of flame-retarded asphalt mixtures is suitable for tunnel patement.

关键词： alkaline filler flame-retarded asphalt mixture limited oxygen index tunnel

Enhancer of Shoot Regeneration 2(ESR2)regulates pollen maturation and vitality in watermelon(Citrullus lanatus)

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Journal of Integrative Agriculture 2024年第10期23卷 3506-3521页

作者： hu Wang Lihong {1. Yalu Guo zheng Li huanhuan Niu College of Horticulture Henan Agricultural UniversityZhengzhou 450002China State Key Laboratory of Crop Stress Biology in Arid Areas College of HorticultureNorthwest A&F UniversityYangling 712100China

Watermelon(Citrullus lanatus)holds global significance as a fruit with high economic and nutritional *** the regulatory network of watermelon male reproductive development is crucial for developing male sterile materials and facilitating *** its importance,there is a lack of research on the regulation mechanism of male reproductive development in *** this study,we identified that ClESR2,a VIIIb subclass member in the APETALA2/Ethylene Responsive Factor(AP2/ERF)superfamily,was a key factor in pollen *** insitu hybridization confirmed significantClESR2 expression in the tapetum and pollen during the later stage of anther *** pollens of transgenic plants showed major defects in morphology and vitality at the late development *** RNA-seq and protein interaction assay confirmed that ClESR2 regulates pollen morphology and fertility by interacting with key genes involved in pollen development at both transcriptional and protein *** suggest that Enhancer of Shoot Regeneration 2(ESR2)plays an important role in pollen maturation and *** study helps understand the male reproductive development of watermelon,providing a theoretical foundation for developing male sterile materials.

关键词： ESR2 watermelon overexpression pollen maturation pollen vitality

Strong invariance principle for a counterbalanced random walk

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Applied mathematics(A Journal of Chinese Universities) 2024年第2期39卷 370-380页

作者： TAN hui-qun hu Zhi-shui DONG Liang International Institute of Finance School of ManagementUniversity of Science and Technology of ChinaHefei 230026China Center for Basic Teaching and Experiment Nanjing University of Science and TechnologyJiangyin 214443China

We study a counterbalanced random walkS_(n)=X_(1.+…+X_(n),which is a discrete time non-Markovian process andX_(n) are given recursively as *** n≥2,X_(n) is a new independent sample from some fixed law̸=0 with a fixed probability p,andX_(n)=−X_(v(n))with probability 1.p,w{1.re v(n)is a uniform random variable on{1.…;n−1..We apply martingale method to obtain a strong invariance principle forS_(n).

关键词： random walk martingale invariance principle