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Estimates of commutators for multilinear operators on Herz-type spaces

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Applied Mathematics(A Journal of Chinese Universities) 2010年第2期25卷 177-184页

作者： zhou jiang CAO Yong-hui LI Liang College of Mathematics and Econometrics Hunan University Changsha 410082 China College of Mathematics and System Sciences Xinjiang University Urumqi 830046 China Dept of Math Institute of Applied Math Yili Normal University Yining 835000 China

In this paper, the boundedness of mulitilinear commutator [-b,T] on Herz-type space is considered, where T is a standard Calderon-Zygmund singular operator and -b ∈ （BMO（Rn））m.

关键词： Multilinear Calderdn-Zygmund singular integral commutator Herz-type space central atom.

非平衡等离子体流场相干反斯托克斯拉曼散射光谱计算及振转温度测量

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物理学报 2024年第15期73卷 80-89页

作者：杨文斌张华磊齐新华车庆丰周江宁白冰陈爽母金河中国空气动力研究与发展中心设备设计与测试技术研究所绵阳621000 空军航空大学长春130012 哈尔滨工程大学物理与光电学院哈尔滨150001

高温非平衡问题是高超声速流动中最基本的科学问题之一,而热力学非平衡特性的准确表征是理解高温非平衡问题和高超声速空气动力学的基础,如何准确可靠地表征流场的热力学非平衡特性是解决高超声速飞行器在稀薄流域高温非平衡问题的关键... 详细信息

高温非平衡问题是高超声速流动中最基本的科学问题之一,而热力学非平衡特性的准确表征是理解高温非平衡问题和高超声速空气动力学的基础,如何准确可靠地表征流场的热力学非平衡特性是解决高超声速飞行器在稀薄流域高温非平衡问题的关键.本文基于相干反斯托克斯拉曼散射基本原理,开发了面向非平衡流场的振转温度反演算法,并在宽温度范围静态环境开展验证.搭建了非平衡等离子体流场相干反斯托克斯拉曼散射测温实验平台并开展实验验证,结果表明微波等离子体处于热力学非平衡状态,并且振动温度和转动温度与微波功率成正比,而热力学非平衡度与微波功率成反比,当微波功率从80W增加至180 W时,等离子体电子数密度增加,中性粒子通过与电子碰撞获得能量使振动温度从(2201±43)K增加至(2452±56)K、转动温度从(382±20)K增加至(535±49)K;而处于振动激发态的分子通过振动-平动弛豫过程(对于N2分子弛豫速率与温度成正比)将部分振动能转化为平动能,导致振动温度与转动温度的差异降低,等离子体热力学非平衡度从0.83降低至0.78.

关键词：热力学非平衡振动温度转动温度相干反斯托克斯拉曼散射

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中华鲟IFNe2的抗病毒天然免疫作用

水产学报 2024年第5期48卷 46-55页

作者：李由申丁广义张书环郭慧芝周江罗凯许巧情长江大学中华鲟病害研究所贵州中医药大学鲟鱼健康养殖与药用价值研究中心

为探究中华鲟干扰素e2 (AsIFNe2)的免疫调控作用，本实验通过原核表达获得了重组中华鲟干扰素e2蛋白(rAsIFNe2)，并分析其对抗病毒相关基因的影响及其抗病毒活性。实时荧光定量PCR (RT-qPCR)结果显示，rAsIFNe2能显著激活中华鲟鳍细胞... 详细信息

为探究中华鲟干扰素e2 (AsIFNe2)的免疫调控作用，本实验通过原核表达获得了重组中华鲟干扰素e2蛋白(rAsIFNe2)，并分析其对抗病毒相关基因的影响及其抗病毒活性。实时荧光定量PCR (RT-qPCR)结果显示，rAsIFNe2能显著激活中华鲟鳍细胞中干扰素刺激基因(IFN-stimulated genes, ISGs)的表达，如Mx、 PKR、 Viperin和ADAR4。此外，rAsIFNe2还能通过激活IRFs和IFNes基因的表达，从而帮助宿主细胞迅速建立抗病毒状态。在鲤春病毒血症病毒(SVCV)感染鲤上皮细胞(EPC)模型中，rAsIFNe2能够诱导EPC细胞中Mx、PKR和Viperin的表达，并降低EPC细胞中SVCV病毒G、N和P基因的表达，减少病变效应的产生。研究表明，AsIFNe2在宿主抗病毒天然免疫反应中发挥作用。本研究为深入了解中华鲟的干扰素免疫系统以及治疗病毒性疾病提供理论依据。

关键词：中华鲟干扰素抗病毒鲤春病毒血症病毒免疫调控

Issues and Future Perspective on Zinc Metal Anode for Rechargeable Aqueous Zinc-ion Batteries

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Energy & Environmental Materials 2020年第2期3卷 146-159页

作者： Canpeng Li Xuesong Xie Shuquan Liang jiang zhou School of Materials Science and Engineering Central South UniversityChangsha Hunan 410083China Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Changsha Hunan 410083China

Rechargeable aqueous zinc-ion batteries(ZIBs) featuring the merits of low cost,eco-friendliness,and enhanced safety have attracted extensive interests and considered as the most promising energy storage ***,much efforts are devoted to the exploration of cathode materials and their storage mechanisms in this system,and inadequate attentions are received in regard to anode side especially in neutral or mild acidic ***,in this review,the fundamental understanding of existing issues including dendrite formation,corrosion,and hydrogen evolution are mainly revealed,as well as their interaction in neutral or mild acidic *** addition,the currently existing solution strategies on the anode are summarized and the mechanisms that contained are simultaneously ***,perspectives on future anode modification and innovation direction are provided for the further development and research of Zn-based ZIBs.

关键词： dendrite formation hydrogen evolution zinc corrosion zinc metal anode zinc-ion batteries

Characterizations of Weighted BMO Space and Its Application

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Acta Mathematica Sinica,English Series 2021年第8期37卷 1278-1292页

作者： Ding Huai WANG jiang zhou Zhi Dong TENG School of Mathematics and Statistics Anhui Normal UniversityWuhu 241002P.R.China College of Mathematics and System Sciences Xinjiang UniversityUrumqi 830046P.R.China

In this paper,we prove that the weighted BMO space BMO^(p)(ω)={f∈L^(1)_(loc):sup||χQ||^(-1)Lp(ω)||(F-Fq)ω^(-1)χQ||LP(ω)<∞Q}is independent of the scale p∈(0,∞)in sense of norm whenω∈A_(1).Moreover,we can replace L^(p)(ω)by L^(p,∞)(ω).As an application,we characterize this space by the boundedness of the bilinear commutators[b,T]_(j)(j=1,2),generated by the bilinear convolution type Calderdn-Zygmund operators and the symbol b,from L^(p1)(ω)×L^(p2)(ω)to L^(p)(ω^(1-p))with 1

关键词： Boundedness Calderon-Zygmund operators characterization commutators weighted BMO space

Lipschitz estimates for commutator of fractional integral operators on non-homogeneous metric measure spaces

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Applied Mathematics(A Journal of Chinese Universities) 2020年第3期35卷 253-264页

作者： WANG Ding-huai zhou jiang MA Bo-lin School of Mathematics and Statistics Anhui Normal UniversityWuhu 241000China College of Mathematics and System Sciences Xinjiang UniversityUrumqi 830046China College of Science and Information Engineering Jiaxing UniversityJiaxing 314001China

In this paper, the authors establish the(L^p(μ), L^q(μ))-type estimate for fractional commutator generated by fractional integral operators Tα with Lipschitz functions(b ∈ Lipβ(μ)),where 1 < p < 1/(α + β) and 1/q = 1/p-(α + β), and obtain their weak(L^1(μ), L^(1/(1-α-β))(μ))-type. Moreover, the authors also consider the boundedness in the case that 1/(α+β) < p < 1/α,1/α≤ p ≤∞ and the endpoint cases, namely, p = 1/(α + β).

关键词： Non-homogeneous space Fractional integral Lipschitz function Commutator Endpoint estimate

Effect of Modification Treatment on Inclusions in 430 Stainless Steel by Mg-Al Alloys

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Journal of Iron and Steel Research International 2013年第5期20卷 6-10页

作者： jiang zhou-hua ZHUANG Ying LI Yang LI Shuang-jiang School of Materials and Metallurgy Northeastern University

Refining process of 430 stainless steel in AOD （argon oxygen decarburization） was simulated under the experimental condition. Al was chosen as deoxidizer, Mg-Al alloy was added in process of refining, and slag used in oxidation period of AOD was chosen in the experiments. The variation of total oxygen content, the size, morphology and composition of inclusions in refining process and the mechanical properties, pitting corrosion resistance of final samples were studied. The results show that no obvious differences in total oxygen content were observed among all the experiments. Neither chain nor cluster Al_2O_3 inclusions were found in refining process of experiments treated by Mg-Al alloys, the average size of inclusions in the steel treated by Mg-Al alloys was less than that of inclusions in steel not treated by Mg-Al alloy. 430 stainless steel treated by Mg-Al alloy shows better tensile strength, yield strength, and pitting resistance than that in the contrast experiment.

关键词： 430 stainless steel Al_2O_3 inclusion MgO·Al_2O_3 spinel inclusion Mg-Al alloy modification treatment

Cross-Linked Hollow Graphitic Carbon as Low-Cost and High-Performance Anode for Potassium Ion Batteries

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Energy & Environmental Materials 2021年第3期4卷 451-457页

作者： Yanhong Feng Suhua Chen Dongyang Shen jiang zhou Bingan Lu School of Physics and Electronics Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and DevicesState Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China School of Materials Science and Engineering Central South UniversityChangsha 410083China

Large-scale and low-cost preparation of carbon-based potassium anode with long life and high capacity is one of the footstones for the development of potassium ion batteries(PIBs).Herein,a low-cost carbon-based material,cross-linked hollow graphitic carbon(HGC),is large scale synthesized to apply for PIBs *** hollow structure can afford sufficient space to overcome the damage caused by the volume expansion of graphitic carbon(GC).While the cross-linked structure forms a compact interconnection network that allows electrons to rapid transfer between different GC *** measurements demonstrated that the HGC anode exhibited low charge/discharge plateau(about 0.25 V and 0.1 V)and excellent specific capacity as high as 298 m A h g^(-1)at the current density of 50 m A g^(-1).And more important,after 200 cycles the capacity of HGC anode still shows 269 m A h g^(-1)(the decay rate of per cycle is only 0.048%).Meanwhile,the use of commercial traditional electrolyte(KPF_(6))and cheap raw materials that provide new hope for trying and realizing the large-scale production of PIBs based on carbon anode materials.

关键词： cross-linked hollow structure graphitic material high reversibility potassium ion battery

Cell-like-carbon-micro-spheres for robust potassium anode

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National Science Review 2021年第9期8卷 68-76页

作者： Hongbo Ding jiang zhou Apparao M.Rao Bingan Lu School of Physics and Electronics State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University School of Materials Science and Engineering and Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of Education Central South University Department of Physics and Astronomy Clemson Nanomaterials Institute Clemson University Fujian Strait Research Institute of Industrial Graphene Technologies

Large-scale low-cost synthesis methods for potassium ion battery(PIB) anodes with long cycle life and high capacity have remained challenging. Here, inspired by the structure of a biological cell, biomimetic carbon cells(BCCs) were synthesized and used as PIB anodes. The protruding carbon nanotubes across the BCC wall mimicked the ion-transporting channels present in the cell membrane, and enhanced the rate performance of PIBs. In addition, the robust carbon shell of the BCC could protect its overall structure, and the open space inside the BCC could accommodate the volume changes caused by K+insertion, which greatly improved the stability of PIBs. For the first time, a stable solid electrolyte interphase layer is formed on the surface of amorphous carbon. Collectively, the unique structural characteristics of the BCCs resulted in PIBs that showed a high reversible capacity(302 m Ah g-1at 100 m A g-1and 248 mAh g-1at500 m A g-1), excellent cycle stability(reversible capacity of 226 m Ah g-1after 2100 cycles and a continuous running time of more than 15 months at a current density of 100 m A g-1), and an excellent rate performance(160 mAh g-1at 1 A g-1). This study represents a new strategy for boosting battery performance, and could pave the way for the next generation of battery-powered applications.

关键词： bionic structures potassium ion battery reversible capacity term stability rate performance