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A new application field of plasma spraying technique to environmental depollution

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中国有色金属学会会刊：英文版 2004年第z1期14卷 55-61页

作者： YE fu-xing A.Ohmori Joining and Welding Research Institute Osaka University Osaka 567-0047 Japan Joining and Welding Research Institute Osaka University Osaka 567-0047 Japan

To expand the application of plasma spraying technique, TiO2 coatings were prepared using agglomerated anatase TiO2 powder to solve the environmental problems. The composition and photocatalytic activity of plasma sprayed TiO2 coatings were investigated systematically. The content of anatase TiO2 in the sprayed coatings was approximate to 7%- 15%, which was influenced by the melting state of TiO2 powder in plasma spraying process. The surface of sprayed coating was very rough and the arithmetical mean deviation of the surface profiles (Ra) was in the range of 5.7 - 8.8 μm. Under lower arc current, the surface of the coating became rougher. The anatase to rutile phase transformation temperature of agglomerated anatase TiO2 powder was approximate to 1 173 K. The TiO2 coating sprayed under the arc current of 400 A had good photocatalytic activity for the relative high content of anatase phase in it. It is concluded that the application of plasma spraying technique to environmental field has been developed.

关键词： TiO2 photocatalytic activity plasma spraying environment

A practical and effective method for reducing differential reflectance spectroscopy noise

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Nanotechnology and Precision Engineering 2022年第1期5卷 49-53页

作者： Hui Qi xing fu State Key Laboratory of Precision Measurement Technology and Instruments Tianjin UniversityTianjin 300072China Tianjin Research Center of MicroNano Manufacturing Technology Tianjin UniversityTianjin 300072China

Differential reflectance spectroscopy(DRS)is a powerful tool to study processes during thin-film growth,especially that of transition metal dichalcogenides and organic thin *** satisfy the requirements for in situ and real-time monitoring of film growth,including spectral resolution and sensitivity at the level of monolayers and even sub-monolayers,the most challenging technical task in DRS is to reduce noise to an extremely low level so that the best possible signal-to-noise ratio can be *** this paper,we present a simplified and cost-effective DRS apparatus,with which we show that the measurement noise is mainly composed of thermal drift noise and explore the temperature-dependence of the DRS *** on the results obtained,we propose an easily realized and effective scheme aiming to reduce the *** results demonstrate that this scheme is effective in stabilizing reliable signals for a long period of several *** noise reduction is achieved,with the typical average noise of the DRS system being decreased to 0.05%over several *** improved DRS system is applied to study the growth of an organic semiconductor layer for an organic field-effect transistor *** results indicate that the apparatus proposed in this paper has potential applications in fabrication of devices on the nanoscale and even the sub-nanoscale.

关键词： Differential reflectance spectroscopy Thin-film measurement technique In situ spectroscopy High vacuum Noise reduction OFET

光伏阵列对松嫩草地土壤细菌群落组成与多样性的影响

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东北师大学报（自然科学版） 2024年第1期56卷 107-114页

作者：王诗雯王思彤李由邢福东北师范大学植被生态科学教育部重点实验室吉林长春130024 吉林省辽源市农业科学院吉林辽源136200 吉林松嫩草地生态系统国家野外观测研究站吉林长春130024

为阐明光伏电站对松嫩草地土壤细菌组成与多样性的影响,调查并测定了吉林西部一座光伏电站的光伏板行间、光伏板下和光伏阵列周边(对照)的植物群落特征和土壤特征,采用Illumina HiSeq 2500基因测序仪进行了土壤细菌16S rDNA测序.结果表... 详细信息

为阐明光伏电站对松嫩草地土壤细菌组成与多样性的影响,调查并测定了吉林西部一座光伏电站的光伏板行间、光伏板下和光伏阵列周边(对照)的植物群落特征和土壤特征,采用Illumina HiSeq 2500基因测序仪进行了土壤细菌16S rDNA测序.结果表明:光伏阵列呈现提高土壤细菌Ace,Chao1和Simpson多样性指数的趋势,并显著增加拟杆菌纲、梭菌纲、酸杆菌纲、放线菌纲和γ-变形菌纲的相对丰度.影响土壤细菌群落的主要因素是土壤pH和全碳、全氮和总有机碳含量,以及植物群落地上生物量和盖度.光伏阵列对松嫩草地土壤细菌群落组成和优势纲丰度均有一定的影响,并对土壤细菌多样性的恢复发挥了积极作用.

关键词：光伏电站土壤微生物植物群落土壤化学特征草地恢复

functional Envelope of Cantor Spaces

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Acta Mathematica Sinica,English Series 2017年第3期33卷 327-340页

作者： xing fu ZHONG Jie LU School of Mathematics Sun Yat-Sen University Guangzhou 510275 P. R. China School of Mathematics South China Normal University Guangzhou 510630 P. R. China

Given a topological dynamical system （X, T）, where X is a compact metric space and T a continuous selfmap of X. Denote by S（X） the space of all continuous selfmaps of X with the compactopen topology. The functional envelope of （X,T） is the system （S（X）,FT）, where FT is defined by FT（φ） = T o φ for any φ ∈ S（X）. We show that （1） If （∑, T） is respectively weakly mixing, strongly mixing, diagonally transitive, then so is its functional envelope, where ∑ is any closed subset of a Cantor set and T a selfmap of ∑ （2） If （S（∑）,Fσ） is transitive then it is Devaney chaos, where （∑, σ） is a subshift of finite type; （3） If （∑, T） has shadowing property, then （Su （∑）, FT） has shadowing property, where ∑ is any closed subset of a Cantor set and T a selfmap of ∑; （4） If （X,T） is sensitive, where X is an interval or any closed subset of a Cantor set and T： X → X is continuous, then （Su（X）,FT） is sensitive; （5） If ∑, is a closed subset of a Cantor set with infinite points and T ：∑ →∑ is positively expansive then the entropy entv（FT） of the functional envelope of （∑, T） is infinity.

关键词： Mixing topological entropy Cantor spaces functional envelopes

Endpoint Estimates of Generalized Homogeneous Littlewood–Paley g-functions over Non-Homogeneous Metric Measure Spaces

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Acta Mathematica Sinica,English Series 2016年第9期32卷 1035-1074页

作者： xing fu Ji Man ZHAO School of Mathematical Sciences Beijing Normal University Laboratory of Mathematics and Complex Systems Ministry of Education Beijing 100875 P. R. China

Let （x, d,u） be a metric measure the upper doubling conditions. Under the weak space satisfying both the geometrically doubling and reverse doubling condition, the authors prove that the generalized homogeneous Littlewood-Paley g-function gr （r ∈ [2, ∞）） is bounded from Hardy space H1（u） into L1（u）. Moreover, the authors show that, if f ∈ RBMO（u）, then [gr（f）]r is either infinite everywhere or finite almost everywhere, and in the latter case, [gr（f）]r belongs to RBLO（u） with the norm no more than ｜｜f｜｜ RBMO（u） multiplied by a positive constant which is independent of f. As a corollary, the authors obtain the boundedness of gr from RBMO（u） into RBLO（u）. The vector valued Calderon-Zygmund theory over （X, d, u） is also established with details in this paper.

关键词： Non-homogeneous metric measure space generalized homogeneous Littlewood-Paley g-function Hardy space RBMO(u) RBLO(u) vector valued Calderon Zygmund theory

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脓毒症急性肺损伤治疗的研究进展

中华医院感染学杂志 2024年第1期34卷 149-155页

作者：李林邢福席付全有宋勤琴李双汝刘继松蚌埠医学院附属蚌埠市第三人民医院烧伤整形科安徽蚌埠233000 蚌埠医学院研究生院安徽蚌埠233030

脓毒症常继发于创伤、烧伤和感染、休克等情况,如果治疗不及时,将进一步发展为多器官衰竭而死亡。脓毒症可激活肺内大量巨噬细胞,释放大量炎症因子,引起急性肺损伤(ALI),作为脓毒症的严重并发症,急性呼吸窘迫综合征(ARDS)具有较高的发... 详细信息

脓毒症常继发于创伤、烧伤和感染、休克等情况,如果治疗不及时,将进一步发展为多器官衰竭而死亡。脓毒症可激活肺内大量巨噬细胞,释放大量炎症因子,引起急性肺损伤(ALI),作为脓毒症的严重并发症,急性呼吸窘迫综合征(ARDS)具有较高的发病率和病死率。ALI/ARDS患者由于肺泡上皮细胞和肺毛细血管内皮细胞的弥漫性损伤可以导致肺泡毛细血管通透性增加,导致肺水肿,临床表现为难治性低氧血症和致命性呼吸衰竭,目前尚无可靠的方法如生物学标志物等预测其发生、发展,临床以支持治疗为主。本文主要就脓毒症相关的肺损伤发病机制及其治疗的最新进展综述如下。

关键词：脓毒症急性肺损伤急性呼吸窘迫综合征机械通气干细胞外泌体

Variational Principle for Topological Pressure on Subsets of Free Semigroup Actions

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Acta Mathematica Sinica,English Series 2021年第9期37卷 1401-1414页

作者： xing fu ZHONG Zhi Jing CHEN School of Mathematics and Statistics Guangdong University of Foreign StudiesGuangzhou 510006P.R.China School of Mathematics and Systems Science Guangdong Polytechnic Normal UniversityGuangzhou 510665P.R.China

We investigate the relations between Pesin–Pitskel topological pressure on an arbitrary subset and measure-theoretic pressure of Borel probability measures for finitely generated semigroup ***(X,G)be a system,where X is a compact metric space and G is a finite family of continuous maps on *** a continuous function f on X,we define Pesin–Pitskel topological pressure PG(Z,f)for any subset Z■X and measure-theoretical pressure Pμ,G(X,f)for anyμ∈M(X),where M(X)denotes the set of all Borel probability measures on *** any non-empty compact subset Z of X,we show that PG(Z,f)=sup{Pμ,G(X,f):μ∈M(X),μ(Z)=1}.

关键词： Topological pressure measure-theoretic pressure semigroup of continuous maps variational principle

1979-2020年中国油菜全要素生产率的动态演变与收敛性

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中国油料作物学报 2024年第2期46卷 236-244页

作者：刘福星王彩丽唐晶冯中朝华中农业大学经济管理学院湖北武汉430070 湖北农村发展研究中心湖北武汉430070

厘清改革开放以来中国油菜全要素生产率发展状况,是提高油菜综合生产能力的逻辑起点。本文基于1979-2020年间11个油菜主产省份的投入产出相关数据,在使用Global Malmquist指数测算全要素生产率基础上,分别使用Kernel密度估计、δ收敛和... 详细信息

厘清改革开放以来中国油菜全要素生产率发展状况,是提高油菜综合生产能力的逻辑起点。本文基于1979-2020年间11个油菜主产省份的投入产出相关数据,在使用Global Malmquist指数测算全要素生产率基础上,分别使用Kernel密度估计、δ收敛和β收敛,分析其动态演进及收敛性。研究结果表明:从时序特征来看,改革开放以来中国油菜全要素生产率在剧烈波动中实现一定增长,表现为技术诱导型增长模式,而技术效率对其促进作用并不显著;从动态演进来看,油菜全要素生产率增长的地区差异不断缩小。从收敛性来看,油菜全要素生产率的δ值整体呈波动下降态势,自2012年始基本稳定在0.01以下,出现明显收敛趋势,说明存在δ收敛。油菜全要素生产率存在绝对β收敛和条件β收敛,将空间效应引入收敛模型后,其收敛性依旧显著,且存在正向空间溢出效应。为进一步提高油菜全要素生产率,本文提出推进国家油菜产业技术体系建设、实施区域化发展战略和促进区域协调发展的对策建议。

关键词：油菜全要素生产率动态演变 Kernel密度估计 δ收敛 β收敛

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Regularity of population occurrence and migration in the oriental armyworm, Mythimna separata(Walker)

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Journal of Integrative Agriculture 2018年第7期17卷 1482-1484页

作者： JIANG xing-fu State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academyof Agricultural Sciences

The oriental armyworm,Mythimna separata（Walker）（Lepidoptera：Noctuidae）,is a major migrant pest of grain in China and other Asian countries,causing huge crop production and economic losses nationwide *** of the uniquely difficult aspects of managing *** arises from its long-distance migratory *** example,direction and timing of winds from its overwintering regions in the south largely determine where and when large influxes of migrants arrive in the north to oviposit,making prediction of infestations difficult.

关键词： Mythimna separata Regularity of population occurrence and migration in the oriental armyworm Walker