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Applied Mathematics and Mechanics(English Edition) 2020年第2期41卷 193-206页

作者： X.WANG W.T.ANG h.fan School of Mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

The current work models a weak(soft) interface between two elastic materials as containing a periodic array of micro-crazes. The boundary conditions on the interfacial micro-crazes are formulated in terms of a system of hypersingular integro-differential equations with unknown functions given by the displacement jumps across opposite faces of the micro-crazes. Once the displacement jumps are obtained by approximately solving the integro-differential equations, the effective stiffness of the micro-crazed interface can be readily computed. The effective stiffness is an important quantity needed for expressing the interfacial conditions in the spring-like macro-model of soft interfaces. Specific case studies are conducted to gain physical insights into how the effective stiffness of the interface may be influenced by the details of the interfacial micro-crazes.

关键词： micromechanical modeling micro-crazed interface effective stiffness coefficient hypersingular integro-differential equation

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The Rising Burden of hepatocellular Carcinoma: Is the Gender Gap Narrowing?

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Journal of Clinical and Translational hepatology 2024年第9期12卷 763-764页

作者： James K.h.ho Prem h.Thurairajah Daniel Q.huang Kristie h.fan Division of Gastroenterology and hepatology National University HospitalNational University Health SystemSingaporeSingapore

Dear Editors,The landscape of hepatocellular carcinoma(hCC)is continuously *** global trends indicate a significant shift in the epidemiology of hCC from viral-related to non-viral-related ***-associated fatty liver disease has emerged as the fastest-growing contributor to hCC in recent years,due to the increased prevalence of obesity and metabolic risk factors.

关键词： Carcinoma epidemiology obesity

The distribution of two-dimensional eccentricity of Sunyaev-Zeldovich Effect and X-ray surface brightness profiles

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The distribution of two-dimensional eccentricity of Sunyaev-...

蒸汽吞吐过程中储层矿物对稠油组分变化的影响

中国天文学会星系分会2004年学术年会

作者： Y.-G.Wang and Z.-h.fan Department of Astronomy,Peking U

来源： cnki会议评论

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特种油气藏 2004年第3期11卷 100-101页

作者： h.fan 刘文华不详东北财经大学国际商务外语学院，辽宁大连166023

热采是世界上开采稠油最有效的提高采收率技术。蒸汽能降低稠油的粘度，稠油和蒸汽之间也存在化学反应。该化学反应能导致蒸汽注入过程中二氧化碳、硫化氢和氢气等气相组分的形成。hyne等人用“水热解”一词形容高温、高压水同稠油和焦... 详细信息

热采是世界上开采稠油最有效的提高采收率技术。蒸汽能降低稠油的粘度，稠油和蒸汽之间也存在化学反应。该化学反应能导致蒸汽注入过程中二氧化碳、硫化氢和氢气等气相组分的形成。hyne等人用“水热解”一词形容高温、高压水同稠油和焦油砂沥青之间的化学作用，并将该过程同在高温、高压下与氢发生反应的“水热”(hydrothermolysis)过程加以区别，从典型化合物中获得的结果显示，一些矿物组分——尤其是微量金属，例如钒和镍，能够加速存在于稠油中的有机硫组分的分解，产生一氧化碳和前面曾提到的其它气体。稠油的“水热”作用能够导致饱和成分和芳香成分的增加，以及胶质和沥青质的减少，降低平均分子量和粘度，从而提高油品质量。

关键词：蒸汽吞吐热采工艺储层矿物稠油采收率

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大气微粒二次有机碳形成特性研究

过程工程学报 2004年第z1期4卷 823-826页

作者：樊国恕李秋明林锐敏高雄第一科技大学环境与安全卫生工程系高雄811

悬浮微粒为空气污染主要项目之一,且PM1(气动直径小于1 μm之微粒)为引起呼吸道各种病变的最主要污染,因此了解大气环境悬浮微粒之来源与特性,是保护人民健康及空气品质的首要工作.本研究分别于高雄市小港(都会区)与台东县太麻里(郊区)... 详细信息

悬浮微粒为空气污染主要项目之一,且PM1(气动直径小于1 μm之微粒)为引起呼吸道各种病变的最主要污染,因此了解大气环境悬浮微粒之来源与特性,是保护人民健康及空气品质的首要工作.本研究分别于高雄市小港(都会区)与台东县太麻里(郊区)进行大气悬浮微粒测定,量测大气悬浮微粒中PM1及PM10之质量浓度与分布,并利用元素分析仪分析微粒中之有机碳(organic carbon,OC)与元素碳(elemental carbon,EC)含量.分析研究期间所得样本结果显示,都会区PM1及PM10有机碳(OC)及元素碳(EC)之浓度均较郊区高,且OC浓度又比EC高;而郊区PM1及PM10之OC及EC之含量较都会区之含量高.若以最小比值估计法OCsec=OCtotal-(OC/EC)minxEC,可估算都会区大气微粒PM1及PM10有机碳成分中约有30.4%及33.0%,郊区之PM1及PM10有机碳成分中则约有40.1%及17.6%,为挥发性有机物气固相传输所形成之二次有机碳组成,结果显示较细微粒(PM1)二次有机碳之含量较高,且郊区大气中亦有相当比例之二次有机碳组成.

关键词：悬浮微粒(PM1/PM10) 总碳(TC) 元素碳(EC) 有机碳(OC) 二次有机碳(OCsec)

Tackling the microlensing wave effects of strong lensing gravitational waves with TAAh

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Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 253-254页

作者： Zuhui fan South-Western Institute for Astronomy Research Yunnan UniversityKunming 650500China

The rapid development of gravitational wave(GW) observations since their first detection in 2015 [1] has opened a completely new window for exploring the Universe. Consequently, astronomical research has entered the multimessenger era, allowing us to use different tracers to view the cosmos from various perspectives. Among others, the appealing application of gravitational wave events from compact binary mergers is that they can act as standard sirens to determine absolute cosmic distances entirely independent of standard candles. This approach is one of the most promising means to solve the current h0tension problem.

关键词： problem. app wave

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Long-time asymptotic behavior for the nonlocal nonlinear Schrödinger equation in the solitonic region

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Science China Mathematics 2025年第2期68卷 379-398页

作者： Gaozhan Li Yiling Yang Engui fan School of Mathematical Sciences and Key Laboratory of Mathematics for Nonlinear Sciences Fudan UniversityShanghai 200433China

In this paper,we extend theδ^(-)-steepest descent method to study the Cauchy problem for the nonlocal nonlinear Schrödinger(NNLS)equation with weighted Sobolev initial data iqt+qxx+2σq^(2)(x,t)q(−x,t)=0,q(x,0)=q0(x),where q0∈h^(1,1)(R).Based on the spectral analysis of the Lax pair,the solution of the Cauchy problem is expressed in terms of the solution of a Riemann-hilbert problem,which is transformed into a solvable model after a series of *** further obtain the asymptotic expansion of the solution to the Cauchy problem for the NNLS equation in the solitonic *** leading term is soliton solutions,the second term is the interaction between solitons and dispersion,and the error term comes from a correspondingδ^(-)-*** with the asymptotic results on the classical NLS equation,the major difference is the second and third terms of the asymptotic expansion for the NNLS equation,which were affected by a function depending on the scattering data and the stationary phase point.

关键词： nonlocal nonlinear Schrödinger equation Riemann-hilbert problem δ^(-)-steepest descent method soliton resolution

Enhancing the photocatalytic efficiency by the molecular modification effect derived from pollutant adsorption on highly crystalline BiOBr

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Journal of Environmental Sciences 2025年第2期148卷 263-273页

作者： Yang Jin Tongyin Liu Yanpeng Mao fan Li Chun hu National Engineering Laboratory for Reducing Emissions from Coal Combustion Engineering Research Center of Environmental Thermal Technology of Ministry of EducationShandong Key Laboratory of Energy Carbon Reduction and Resource UtilizationSchool of Energy and Power EngineeringShandong UniversityJinan 250061China Beijing Enterprises Water Grouphina>Investment Limited Beijing 100102China Institute of Environmental Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

The adsorption of pollutants can not only promote the direct surface reaction,but also modify the catalyst itself to improve its photoelectric characteristics,which is rarely studied for water treatment with inorganic photocatalyst.A highly crystalline BiOBr(c-BiOBr)was synthesized by a two-step preparation *** to the calcination,the highly crystalline enhanced the interface interaction between pollutant and *** complex of organic pollutant and[Bi_(2)O_(2)]^(2+)could promote the active electron transfer from the adsorbed pollutant to c-BiOBr for the direct pollutant degradation by holes(h^(+)).Moreover,the pollutant adsorption actually modified c-BiOBr and promoted more unpaired electrons,which would coupling with the photoexcitation to promote generate more O_(2)^(•-).The molecular modification effect derived from pollutant adsorption significantly improved the removal of *** work strongly deepens the understanding of the molecularmodification effect from the pollutant adsorption and develops a novel and efficient approach for water treatment.

关键词： highly crystalline BiOBr Pollutant adsorption Molecular modification Photocatalysis Water treatment

Selenate-based heterojunction with cobalt-nickel paired site for electrocatalytic oxidation of 5-hydroxymethylfurfural coupling water splitting to produce hydrogen

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Journal of Energy Chemistry 2025年第2期101卷 156-162页

作者： Zhengru Yang Jia hui Wangxi fan Pengcheng Liu Chunyong Zhang Shuang Dong Zhou Yang Department of Chemistry and Chemical Engineering & Jiangsu Key Laboratory of Clean Energy Storage and Conversion Jiangsu University of Technology Engineering Technology and Materials Research Center China Academy of Transportation Sciences School of Chemical Engineering and Materials Changzhou Institute of Technology

It is very appealing that 5-hydroxymethylfurfural（hMF） is electrocatalytical oxidized as 2,5-furandicarboxylic acid（FDCA） linking to non-classical cathodic hydrogen（h2） ***,the electrocatalysts for electrocatalytic hMF oxidative reaction（e-hMFOR） have been facing low Faradaic efficiency（FE） and high water splitting ***,we propose a strategy of the NiSeO3@（CoSeO3）4heterojunction by constructing a Co-Ni paired site,where the Co site is in charge of adsorbing for hMF while the electrons are transferred to the Ni site,thus giving the NiSeO3@（CoSeO3）4heterojunction superior electrocata lytic performances for e-hMFOR and water *** optimizing conditions,the NiSeO3@（CoSeO3）4heterojunction has high conversion of 99.7%,high selectivity of 99.9%,and high FE of 98.4% at 1.3 V,as well as low cell voltage of 1.31 V at 10 mA cm-2in 1 M KOh+0.1 M *** study offers a potential insight for e-hMFOR to high value-added FDCA coupling water splitting to produce h2in an economical manner.

关键词： Co-Ni paired site e-hMFOR FDCA heterojunction hydrogen evolution

Charge polarity inversion and zincophilicity improvement for chitosan separator towards durable aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 110-119页

作者： Jiaqi Yu Bo Liu hong Ma Zehua fan Xiang han Qinghua Tian Jizhang Chen Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and Engineering Nanjing Forestry University College of Mathematics and Physics Jinggangshan University Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province School of Chemistry and Chemical Engineering Zhejiang Sci-Tech University

Aqueous zinc-ion batteries encounter enormous challenges such as Zn dendrites and parasitic *** modification is a highly effective strategy to address these *** the advantages of low cost,nontoxicity,biodegradability,good film-forming ability,superior hydro phi licity,and rich functional groups,chitosan is an ideal matrix for constructing ***,the presence of positive charges within chitosan in weakly acidic electrolytes is unfavorable for dendrite ***,Schiff base reaction is introduced to modify chitosan matrix,transforming its charge polarity from positive to ***,NbN with excellent zincophilicity is coated onto chitosan matrix,forming a Janus separator with low thickness of 19 μm and considerably improved mechanical *** resultant separator can promote the transport of Zn2+ions while triggering a repulsive shielding effect against anions,therefore dramatically enhancing Zn2+ion transfer number from 0.28 to *** separator can also facilitate desolvation process,improve exchange current density,restrict two-dimensional Zn2+ion diffusion,and enhance electrochemical kinetics,contributing to significantly inhibited dendrite growth,by-product formation,and hydrogen ***,stable and reversible Zn stripping/plating process is enabled for over 2500 h at 2 mA cm-2and 2 mAh *** great rate capability and excellent cyclability can be achieved for full batteries even under harsh *** work provides new insights into separator design for Zn-based batteries.

关键词： Aqueous zinc-ion batteries Charge polarity regulation Chitosan utilization Dendrite inhibition Separator modification