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Water Science and Engineering 2023年第3期16卷 226-233页

作者： Yi-ming Hu zhong-min Liang Yi-xin huang Jun Wang Bin-quan Li College of Hydrology and Water Resources Hohai UniversityNanjing 210098China

Estimating the design flood under nonstationary conditions is challenging. In this study, a sample reconstruction approach was developed to transform a nonstationary series into a stationary one in a future time window (FTW). In this approach, the first-order moment (EFTW) of an extreme flood series in the FTW was used, and two possible methods of estimating EFTW values in terms of point values and confidence intervals were developed. Three schemes were proposed to analyze the uncertainty of design flood estimation in terms of sample representativeness, uncertainty from EFTW estimation, and both factors, respectively. To investigate the performance of the sample reconstruction approach, synthesis experiments were designed based on the annual peak series of the Little Sugar Creek in the United States. The results showed that the sample reconstruction approach performed well when the high-order moment of the series did not change significantly in the specified FTW. Otherwise, its performance deteriorated. In addition, the uncertainty of design flood estimation caused by sample representativeness was greater than that caused by EFTW estimation.

关键词： Hydrological frequency analysis Nonstationarity Series reconstruction Uncertainty assessment Changing environment

The maxima and sums of multivariate non-stationary Gaussian sequences

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Applied Mathematics(A Journal of Chinese Universities) 2015年第2期30卷 197-209页

作者： TAN zhong-quan YANG Yang College of Mathematics Physics and Information Engineering Jiaxing University School of Mathematics and Statistics Nanjing Audit University

Let {Xkl,…, Xkp, k≥ 1} be a p-dimensional standard （zero-means, unit-variances）non-stationary Gaussian vector sequence. In this work, the joint limit distribution of the maximaof {Xkl,…, Xkp, k 〉 1}, the incompl... 详细信息

关键词： Maxima, sum, multivariate Gaussian sequence non-stationary, strongly dependent

Extraordinary simultaneous enhancement of the coercivity and remanence of dual alloy HRE-free Nd-Fe-B sintered magnets by post-sinter annealing

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Journal of Materials Science & Technology 2022年第11期106卷 236-242页

作者： Qingfang huang Qingzheng Jiang Jifan Hu Sajjad Ur Rehman Gang Fu Qichen quan Jixiang huang Deqin Xu Dakun Chen Zhenchen zhong Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices&College of Rare Earths Jiangxi University of Science and TechnologyGanzhou 341000China Fujian Key Laboratory for Rare Earth Functional Materials Longyan 366300China School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China

Post-sinter annealing process plays an important role in the microstructures and magnetic properties of the Nd-Fe-B sintered *** this paper,systematically investigated are the magnetic properties and microstructures of the as-sintered and post-sinter annealed Nd-Fe-B magnets with Pr-Fe-Ga boundary *** choice consecutive annealing methods are adopted at high and low temperatures,namely the 1 st annealing at 880℃ for 2 h and then the 2^(nd) annealing at 440℃ for 3 *** is exceptional to find out that both the remanence and coercivity are improved after 2^(nd) annealing process for this type of *** coercivity is hugely increased from 10.09 kOe for the as-sintered sample to 17.19 kOe for the 2^(nd) annealed magnet,with a significant increment of 70.37%in *** extraordinary magnetic properties of B_(r)=14.44 kGs,H_(cj)=17.19 kOe and(BH)_(max)=51.08 MGOe are obtained for the designated Nd-Fe-B sintered magnets without heavy rare earth(HRE)elements manufactured by dual alloy *** Curie temperature is monotonically decreased from 634 K to 602 K while the c-axis alignment degree is optimized after *** observation and analysis indicate that the elemental distribution patterns are altered after the 2^(nd) *** diffusion of the aggregate(Pr,Nd,Cu,Ga)-rich phase from triple junctions into the grain boundary regions is ascribed to the formation of thin and continuous grain boundary layer,which is critical to improve the microstructures and magnetic properties.

关键词： Nd-Fe-B sintered magnets HRE-free Dual alloy method Post-sinter annealing Magnetic properties

The asymptotic relation between the first crossing point and the last exit time of Gaussian order statistics sequences

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Applied Mathematics(A Journal of Chinese Universities) 2023年第4期38卷 545-561页

作者： NING Zi-jun TAN zhong-quan College of Data Science Jiaxing UniversityJiaxing 314001China

In this paper,we study the asymptotic relation between the first crossing point and the last exit time for Gaussian order statistics which are generated by stationary weakly and strongly dependent Gaussian *** is shown that the first crossing point and the last exit time are asymptotically independent and dependent for weakly and strongly dependent cases,*** asymptotic relations between the first crossing point and the last exit time for stationary weakly and strongly dependent Gaussian sequences are also obtained.

关键词： rst crossing point last exit time stationary Gaussian sequences Gaussian order statistic se-quences

Performance of a bi-layer solar steam generation system working at a high-temperature of top surface

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Frontiers in Energy 2023年第1期17卷 141-148页

作者： Jinxin zhong Congliang huang School of Electrical and Power Engineering China University of Mining and TechnologyXuzhou 221116China Center for Phononics and Thermal Energy Science China-EU Joint Laboratory for NanophononicsSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China Department of Mechanical Engineering University of ColoradoBoulderCO 80309-0427USA

Many efforts have been focused on enhancing the vapor generation in bi-layer solar steam generation systems for obtaining as much pure water as ***,the methods to enhance the vapor temperature is seldom studied although the high-temperature vapor has a wide use in medical sterilization and electricity *** this work,to probe the high-temperature vapor system,an improved macroscopic heat and mass transfer model was ***,using the finite element method to solve the model,the influences of some main factors on the evaporation efficiency and vapor temperature were discussed,including effects of the vapor transport conditions and the heat dissipation *** results show that the high-temperature vapor could not be obtained by enhancing the heat-insulating property of the bi-layer systems but by applying the optimal porosity and proper *** paper is expected to provide some information for designing a bi-layered system to produce high-temperature vapor.

关键词： solar steam generation solar energy numerical method porous material

Cavitation-induced damage model of soft materials in exposure to high-intensity focused ultrasound

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Acta Mechanica Sinica 2020年第5期36卷 1058-1064,I0002页

作者： Qinyi huang Zheng zhong School of Aerospace Engineering and Applied Mechanics Tongji UniversityShanghai 200092China School of Science Harbin Institute of TechnologyShenzhen 518055China

High-intensity focused ultrasound can drive cavitation bubbles that damage soft materials.A cavitation-induced damage model is developed to study the mechanical damage of soft materials by high-intensity focused *** on the thermodynamics framework with the acoustic radiation stress theory and the nonlinear elasticity theory,an internal variable which reflects the mechanical damage caused by cavitation bubbles is incorporated into the Helmholtz free *** evolution of material damages for tissue-mimicking gel is established,which is related to the cavitation process and the mechanical dissipation from a macroscopic *** theoretical model is then applied to analyze the material damaged area observed in the experiment and the theoretical prediction is found in agreement with the existing experimental results,which shows that the damage induced by cavitation bubbles develops rapidly,then slow down and finally reaches a plateau.

关键词： Acoustomechanics Thermodynamics Cavitation damage Energy dissipation Tissue-mimicking gel

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针刺防治顺铂化疗所致呕吐的临床观察

上海针灸杂志 2003年第4期22卷 8-9页

作者：阙铁生吕军影黄耀全钟进才广西医科大学第一附属医院南宁530021

目的　观察针刺对用恩丹西酮治疗无效的顺铂化疗致呕吐的临床疗效。方法　选择用含顺铂的联合化疗方案化疗并经恩丹西酮止吐无效的恶性肿瘤病人。治疗组 3 1例 ,于第 2周期化疗时 ,行针刺止吐。取足三里、内关、中脘及“止吐穴”,观察... 详细信息

目的　观察针刺对用恩丹西酮治疗无效的顺铂化疗致呕吐的临床疗效。方法　选择用含顺铂的联合化疗方案化疗并经恩丹西酮止吐无效的恶性肿瘤病人。治疗组 3 1例 ,于第 2周期化疗时 ,行针刺止吐。取足三里、内关、中脘及“止吐穴”,观察疗效、呕吐积分并与对照组 (胃复安 +地塞米松 ) 12例进行比较。结果　治疗组仍有 45 .16%的有效率 ,高于对照组 ,而且 ,呕吐积分明显减少。结论　针刺能减轻经恩丹西酮治疗无效的化疗病人的呕吐反应 ,提高化疗期间的生活质量。

关键词：恶性肿瘤化学疗法顺铂呕吐针刺疗法临床疗效

Some limit results on supremum of Shepp statistics for fractional Brownian motion

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Applied Mathematics(A Journal of Chinese Universities) 2016年第3期31卷 269-282页

作者： TAN zhong-quan CHEN Yang School of Mathematical Sciences Zhejiang University College of Mathematics Physics and Information Engineering Jiaxing University School of Mathematics and Physics Suzhou University of Science and Technology

Define the incremental fractional Brownian field ZH（τ, s） = BH（s＋τ） -BH（s）,where BH（s） is a standard fractional Brownian motion with Hurst parameter H ∈ （0, 1）. Inthis paper, we first derive an exact asymptotic of distribution of the maximum MH（Tu） =supτ∈[0,1],s∈[0,xτu] ZH（τ, s）, which holds uniformly for x ∈ [A, B] with A, B two positive con-stants. We apply the findings to analyse the tail asymptotic and limit theorem of MH （τ） witha random index τ. In the end, we also prove an almost sure limit theorem for the maximum M1/2（τ） with non-random index T.

关键词： Extremes Shepp statistics fractional Brownian motion exact asymptotic almost sure limit theorem

Polymeric complex micelle loaded with axially substituted silicon(Ⅳ) phthalocyanine

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Chinese Chemical Letters 2009年第5期20卷 627-630页

作者： Bao quan huang College of Chemistry & Material Science Fujian Normal University Fuzhou 350007 China

A novel axially substituted silicon（IV） phthalocyanine, namely di-pyridyloxy axially substituted silicon（IV） phthalocyanine 2 was synthesized and characterized by UV/vis, IR, elemental analysis, MS as well as IH NMR spectroscopy. Hydrophobic 2 was encapsulated by amphiphilic triblock copolymer poly[N^e-（benzyloxycarbonyl-lysine]-poly（ethylene glycol）-poly [N^e-（benzyl oxycarbonyl）（PLL（Z）-b-PEG-b-PLL（Z）） to form hydrophobic 2-loaded polymeric complex micelle （PIC）（2-loaded P/C）. Atom force microscopy （AFM） image showed that 2-loaded PIC formed a spherical nanocarrier with approximately 35-50 nm in diameter. The fluorescence intensity and lifetime of 2-loaded PIC was significantly enhanced bv the incorporation 2 into PIC nanocarrier.

关键词： Axially substituted phthalocyanine Polymeric complex micelle Amphiphilic triblock copolymer

REVIEW OF SOME RESEARCHES ON NANO-AND SUBMICRON BROWNIAN PARTICLE-LADEN TURBULENT FLOW

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Journal of Hydrodynamics 2012年第6期24卷 801-808页

作者： LIN Jian-zhong huang Li-zhong China Jiliang University Department of Mechanics Zhejiang University

The study of nano- and submicron Brownian particle-laden turbulent flow has wide industrial applicability and hence has received much attention. The purpose of the present paper is to provide and review some researches in this field. The topics are related to the universality, particularity, complexity and importance of nano- and submicron Brownian particle-laden turbulent flow, the models of particle general dynamical equation, the collision behavior of particles. Finally, several open research issues are identified.

关键词： particle-laden flow nano-particle submicron particle Brownian turbulence