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Ion Exchange Membrane“ABC”–A Key Material for Upgrading Process Industries

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Chinese Journal of Chemistry 2021年第4期39卷 825-837页

作者： Yaoming Wang Zhengjin Yang liang wu liang Ge Tongwen Xu CAS Key Laboratory of Soft Matter Chemistry Collaborative Innovation Center of Chemistry for Energy MaterialsSchool of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026 China

Ion exchange membrane plays a crucial role in transforming and upgrading traditional chemical manufacturing procedures and boosting a multitude of new *** to the strict regulations on wastewater discharge and increasing demands of renewable energy,anion exchange membrane(“A”membrane),bipolar membrane(“B”membrane)and cation exchange membrane(“C”membrane)have become a key material for upgrading various process ***,we summarized several novel synthetic routes for“ABC”membranes fabrication from the viewpoints of designing novel membrane synthetic routes,regulating the ionic transport channels,imparting dynamic transfer regions,introducing intrinsic micro-porosity into the membrane and among *** account includes a brief introduction to membrane structure designs and fabrications,emerging and industrial applications,and perspectives on ion exchange membranes.

关键词： Anion exchange membrane Cation exchange membrane Bipolar membrane Water splitting Energy conversion

Acyclic Total Colorings of Planar Graphs without l Cycles

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Acta Mathematica Sinica,English Series 2011年第7期27卷 1315-1322页

作者： Xiang Yong SUN Jian liang wu School of Statistics and Mathematics Shandong Economic University Ji'nan 250014 P. R. China School of Mathematics and Systems Science Shandong University Ji'nan 250100 P. R. China

A proper total coloring of a graph G such that there are at least 4 colors on those vertices and edges incident with a cycle of G, is called acyclic total coloring. The acyclic total chromatic number of G is the least number of colors in an acyclic total coloring of G. In this paper, it is proved that the acyclic total chromatic number of a planar graph G of maximum degree at least k and without 1 cycles is at most △（G）＋ 2 if （k, l） ∈ {（6, 3）, （7, 4）, （6, 5）, （7, 6）}.

关键词： Acyclic total coloring cycle planar graph

A Note on List Edge and List Total Coloring of Planar Graphs without Adjacent Short Cycles

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Acta Mathematica Sinica,English Series 2014年第1期30卷 91-96页

作者： Hui Juan WANG Jian liang wu School of Mathematics Shandong University

LetGbe a planar graph with maximum degreeΔ.In this paper,we prove that if any4-cycle is not adjacent to ani-cycle for anyi∈{3,4}in G,then the list edge chromatic numberχl（G）=Δand the list total chromatic number... 详细信息

关键词： List edge coloring list total coloring planar graph cycle

Tropical cyclones in a warming climate

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Science China Earth Sciences 2020年第3期63卷 456-458页

作者： liang wu Zhiping WEN Ronghui HUANG Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100190China Department ofAtmospheric and Oceanic Sciences/Institute of Atmospheric Sciences Fudan UniversityShanghai 200438China Jiangsu Collaborative Innovation Center for Climate Change Nanjing 210023China

Over the past few decades,extreme tropical cyclone(TC)events have become more *** the 2019 typhoon season in the western North Pacific(WNP),7 super typhoons hit East *** Typhoon Lekima(2019)caused economic loss of at ... 详细信息

关键词： China. typhoon warming

Upper bounds on the capacity for optical intensity channels with AWGN

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Science China(Information Sciences) 2017年第2期60卷 165-176页

作者： Yingying YU Zaichen ZHANG liang wu Jian DANG National Mobile Communications Research Laboratory Southeast University

The channel capacity of the optical wireless communication(OWC) systems is still a problem that has not an optimal and close-form expression, in spite of OWC can be used to achieve high data rates. This paper presents novel upper bounds on the channel capacity of an optical intensity modulated and directed detection(IM/DD) system under peak-power and average-power constraints. The channel is modeled as an additive white Gaussian noise(AWGN) optical channel. The bounds are derived based on sphere-based signal space argument. Simulation results show the proposed bounds are tight at both high and low signal-to-noise ratios(SNRs). Compared to those reported bounds, the derived bounds are better at high SNRs region in particular, and the expressions are simpler and unique for the whole range of average-to-peak-power ratio.

关键词： channel capacity optical communication AWGN sphere-based signal space high signal-to-noise ratios(SNRs)

Agent Based Multiviews Requirements Model

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wuhan University Journal of Natural Sciences 2006年第2期11卷 346-350页

作者： liang Zhengping wu Guoqingt School of Computer Wuhan University Wuhan 430072 Hubei China

Based on the current researches of viewpoints oriented requirements engineering and intelligent agent, we present the concept of viewpoint agent and its abstract model based on a recta-language for muhiviews requirements engineering. It provided a basis for consistency checking and integration of different viewpoint requirements, at the same time, these checking and integration works can automatically realized in virtue of intelligent agent＇ s autonomy, proactivenes.s and social ability. Finally, we introduce the practical application of the model by the case study of data flow diagram.

关键词： viewpoint agent agent viewpoint model

LncRNAs are cool regulators in cold exposure in plants

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Science China(Life Sciences) 2019年第7期62卷 978-981页

作者： Pingchuan Deng liang wu College of Agriculture and Biotechnology Zhejiang University

Transcriptomic studies in last two decades showed that more than 70% eukaryotic genomes are *** transcripts over 200 nucleotides in length without a coding ability,called long non-coding RNAs (lncRNAs),account for the... 详细信息

关键词： Transcriptomic decades RNAs

One-pot scalable in situ growth of highly corrosion-resistant MgAl-LDH/MBT composite coating on magnesium alloy under mild conditions

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Journal of Materials Science & Technology 2021年第33期92卷 225-235页

作者： Ting Hu Yuejun Ouyang Zhi-Hui Xie liang wu Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol(PVA)Fiber Material Huaihua UniversityHuaihua 418000China College of Materials Science and Engineering/National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

Current corrosion-resistant layered double hydroxide(LDH)coating on Mg alloy is usually in situ grown in autoclave by hydrothermal methods under high temperature and high-pressure conditions,which is unfavorable for industrial *** report that an inhibitor(2-mercaptobenzothiazole,MBT)incorporated composite(Mg Al-LDH/MBT)coating can be in situ deposited on bare AZ31 Mg alloy surface with the assistance of a chelating agent(ethylenediaminetetraacetic acid)under a relatively low temperature(95℃)and ambient pressure by a one-pot *** successful formation of LDH/MBT composite coating is confirmed by a series of characterizations,such as X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and energy dispersive spectroscopy(EDS).The corrosion resistance of the composite coating is evaluated by means of hydrogen evolution measurement,electrochemical impedance spectroscopy(EIS),Tafel polarization curves,and neutral salt spray *** tests show that the LDH/MBT composite coating has a very low corrosion current density(1.7310^(-8)A cm^(-2)),an extremely high charge transfer resistance(2.336 M cm^(2)),and does not show any corrosion pits even after 15 d of exposure to a Na Cl solution or 7 d of exposure to salt fog environment,manifesting the good and robust corrosion ***,the deposition and corrosion protection mechanisms of the Mg Al-LDH/MBT composite coating are also discussed and proposed based on the EDS characterization of the coating after long-time exposure.

关键词： Magnesium alloy Coating Corrosion resistance Layered double hydroxide

Wave propagation of a discrete SIR epidemic model with a saturated incidence rate

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International Journal of Biomathematics 2019年第3期12卷 109-126页

作者： Qiu Zhang Shi-liang wu School of Mathematics and Statistics Xidian University Xi7an Shaanxi 710071 P. R. China

This paper is concerned with the traveling wave solutions for a discrete SIR epidemic model with a saturated incidence rate. We show that the existence and non-existence of the traveling wave solutions are determined by the basic reproduction number R0 of the corresponding ordinary differential system and the minimal wave speed c*. More specifically, we first prove the existence of the traveling wave solutions for R0>1 and c>c* via considering a truncated initial value problem and using the Schauder’s fixed point theorem. The existence of the traveling wave solutions with speed c=c? is then proved by using a limiting argument. The main difficulty is to show that the limit of a decreasing sequence of the traveling wave solutions with super-critical speeds is non-trivial. Finally, the non-existence of the traveling wave solutions for R0>1,00 is proved.

关键词： Lattice dynamic system traveling wave solution existence non-existence