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守正创新勇担时代使命——中山大学学报自然科学版创刊70周年(1955—2024)

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中山大学学报（自然科学版）（中英文） 2025年第1期64卷 28-39页

作者：詹拔群张冰中山大学期刊管理中心广东广州510275 中山大学学报编辑部广东广州510275

本文介绍《中山大学学报(自然科学版中英文)》的创刊与源流,分为创刊初期(1955—1966)、首批复刊(1973—1978)、改革开放后(1979—2012)和迈进新时代(2013—2023)四个时间段回顾该刊70年的办刊历程,着重介绍了在各个时期为该刊的发展壮... 详细信息

本文介绍《中山大学学报(自然科学版中英文)》的创刊与源流,分为创刊初期(1955—1966)、首批复刊(1973—1978)、改革开放后(1979—2012)和迈进新时代(2013—2023)四个时间段回顾该刊70年的办刊历程,着重介绍了在各个时期为该刊的发展壮大作出了重要贡献的中山大学学者及其发表的成果,展现中山大学与该刊在推动国家科学技术发展进步方面所作出的贡献。新时代以来,自然科学版致力于内涵式高质量发展取得了成效。该刊以建设世界一流科技期刊为目标,采取了策划组织大型专题专辑、变更期刊文种为中英文、实施稿件质量提升计划、不断完善数字化出版等重要办刊举措,大力推进国际化高水平科技期刊建设。

关键词：科技期刊中山大学学报自然科学版重要作者数字化出版

Comparisons of.j.ULE 1 rocket thermospheric wind observations in high latitudes with GITM simulations

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science China(Technological sciences) 2017年第3期60卷 412-418页

作者： dEnG Yue LARsEn Miguel f RIdLEY Aaron j zhan.TianYu department of Physics University of Texas at Arlington department of Physics Clemson University Center for space Environment Modeling The University of Michigan

4 summary and conclusion The jOULE sounding rocket 1 experiment was carried out at Poker flat Research Range in Alaska around 1200 UT on March 27th,2003 with two instrumented rockets and one chemical tracer *** the released TMA trails,neutral wind measurements from approximately 85 to 160 km altitude showed a vertically propagating wave and a jet structure around 120 km *** shears appeared at the bottom side of the jet with Richardson numbers close to or smaller than the critical value of 0.25,which implies the possible existence of Kelvin-Helmholtz instabilities caused by the vertical shear in the fast flows.

关键词： target tracking parallel vision processor MRId skipping searching image processing

surface plasma treatment effects on the molecular structure at polyimide/air and buried polyimide/epoxy interfaces

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Chinese Chemical Letters 2015年第4期26卷 449-454页

作者： john n.Myers zhan.Chen department of Chemistry University of Michigan

Polyimides are widely used as chip passivation layers and organic substrates in microelectronic packaging. Plasma treatment has been used to enhance the interfacial properties of polyimides, but its molecular mechanism is not clear. In this research, the effects of polyimide surface plasma treatment on the molecular structures at corresponding polyimide/air and buried polyimidejepoxy interfaces were investigated in situ using sum frequency generation （sfG） vibrational spectroscopy. sfG results show that the polyimide backbone molecular structure was different at polyimide/air and polyimidejepoxy interfaces before and after plasma treatment. The different molecular structures at each interface indicate that structural reordering of the polyimide backbone occurred as a result of plasma treatment and contact with the epoxy adhesive. furthermore, quantitative orientation analysis indicated that plasma treatment of polyimide surfaces altered the twist angle of the polyimide backbone at corresponding buried polyimide/epoxy interfaces. These sfG results indicate that plasma treatment of polymer surfaces can alter the molecular structure at corresponding polymer/air and buried polymer interfaces.

关键词： Molecular structureVibrational spectroscopysum frequency generation spectroscopy

XPs InVEsTIGATIOn Of nITROGEn IOns IMPLAnTEd InTO ALUMInUM ALLOY BY PLAsMA BAsEd IOn IMPLAnTATIOn

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Acta Metallurgica sinica(English Letters) 1999年第5期12卷 771-776页

作者： zhan. Z.j. Ma, X.X. Xia, L.f. sun, Y. Harbin Inst of Technology Harbin China

Aluminum alloy 2024 has been implanted with nitrogen ions at various doses by plasma based ion implantation. The introduction of energetic ions causes structural change within the near surface region of the solid. The samples have been characterized by X-ray Photoelectron spectroscopy at various depths. The chemical states of Al and n were identified by deconvolution of the recorded XPs spectra. After plasma based ion implanted nitrogen into aluminum, not only the Aln precipitates but also super saturated solution of nitrogen forms. The presence of aluminum in different chemical states is corresponding to Al, Aln and Al2O3. The majority of nitrogen is in the form of the supersaturated solution. With the increase of nitrogen dose, the amount of Aln precipitates increases.

关键词： Aluminum compounds Ion implantation nitrides nitrogen Plasma devices Wear of materials

Effect of void nucleation on microstructure and stress state in aluminum alloy tailor-welded blank

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Progress in natural science:Materials International 2021年第1期31卷 77-85页

作者： L.Xing M.zhan.P.f.Gao M.Li Y.d.dong T.Y.Wang state Key Laboratory of solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University shaanxi Key Laboratory of High-Performance Precision forming Technology and Equipment Key Laboratory of High Performance Manufacturing for Aero Engine (northwestern Polytechnical University) Ministry of Industry and Information Technology

The microscopic damage initiation characteristic in welded joint greatly determines the subsequent damage evolution and fracture behavior of aluminum alloy tailor-welded blank(TWB) during plastic forming. In this study, the interactive dependence of void nucleation on microstructure and stress state in the welded joint of a2219 aluminum alloy TWB was quantitatively explored by in-situ sEM testing. Moreover, a micromechanical model based on actual microstructure was adopted to reveal the underlying mechanisms from the perspective of microscopic heterogeneous deformation. The results showed that three void nucleation mechanisms, including particle-cracking, interface-debonding and matrix-cracking, coexisted in the deformation at different microstructure regions and stress states. The nucleation strain of each mechanism mainly depended on the particle volume fraction, grain size and stress triaxiality. Besides, the proportions of particle-cracking and interfacedebonding greatly varied with the grain size and particle volume fraction, and the variation law changed with the stress state. The proportion of matrix-cracking had a weak dependence on the microstructure, while increased with the stress triaxiality decreasing. It made the damage initiation in aluminum alloy welded joint transit from particle-cracking dominance to matrix-cracking dominance with the stress triaxiality *** micromechanical modeling results suggested that the changes of evolutions and distributions of Mises stress in particle, hydrostatic stress at interface and plastic strain in matrix with microstructure and stress state were responsible for the above effects.

关键词： Aluminum alloy Welded joint Void nucleation Microstructure stress state Micromechanical model

Harnack Estimates for Weak solutions to a singular Parabolic Equation

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Chinese Annals of Mathematics,series B 2011年第3期32卷 397-416页

作者： Huashui zhan school of sciences Jimei University Xiamen 361021 Fujian China

By an interpolation method,an intrinsic Harnack estimate and some supestimates are established for nonnegative solutions to a general singular parabolic equation.

关键词： Harnack estimate Interpolation method nonnegative solution singular parabolic equation

solution to nonlinear Parabolic Equations Related to P-Laplacian

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Chinese Annals of Mathematics,series B 2012年第5期33卷 767-782页

作者： Huashui zhan school of sciences Jimei University Xiamen 361021 Fujian China. E-mail: hszhan@***

Consider the following Cauchy problem：where 1 〈 p 〈 2, 1 〈 m 〈 p_~11, and # is a a-finite measure in n. By the Moser＇s iteration method, the existence of the weak solution is obtained, provided that （M＋1）n 〈 P. In mn＋l contrast, if 〉 p, there is no solution to the Cauchy problem with an initial value δ（X）, where 5（x） is the classical dirac function.

关键词： nonlinear parabolic equation Cauchy problem Existence a-finite measure

Evolutionary p(x)-Laplacian Equation with a Convection Term

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Acta Mathematicae Applicatae sinica 2019年第3期35卷 655-670页

作者： Hua-shui zhan school of Applied Mathematics Xiamen University of Technology

The paper studies an evolutionary p(x)-Laplacian equation with a convection term ut=div(ρα|■u|p(x)-2■u)+∑n i=1■bi(u)/■xi,whereρ(x)=dist(x,■Ω),ess inf p(x)=p^->*** assure the well-posedness of the solutions,the paper shows only a part of the boundary,Σp■■Ω,on which we can impose the boundary value.Σp is determined by the convection term,in particular,when 1ni(x)so,there is an essential difference between the equation and the usual evolutionary p-Laplacian *** last,the existence and the stability of weak solutions are proved under the additional conditionsαndΣp=■Ω.

关键词： Evolutionary p(x)-Laplacian equation week solution fichera-Oleinik theory boundary degeneracy

Application of a simplified AdM1 for full-scale anaerobic co-digestion of cattle slurry and grass silage:assessment of input variability

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frontiers of Environmental science & Engineering 2024年第4期18卷 125-139页

作者： sofia Tisocco sören Weinrich Gary Lyons Michael Wills Xinmin zhan.Paul Crosson Civil Engineering College of Science and EngineeringUniversity of GalwayGalwayH91 TK33Ireland Teagasc Animal and Bioscience Research department Animal and Grassland Research and Innovation CentreDunsanyC15 PW93Ireland Biochemical Conversion department Deutsches Biomasseforschungszentrum gemeinnützige GmbHLeipzig 04347Germany faculty of Energy·Building services·Environmental Engineering Münster University of Applied SciencesSteinfurt 48565Germany Agri-food and Biosciences Institute HillsboroughBT266DRUK Ryan Institute University of GalwayGalwayH91 TK33Ireland MaREI Research Centre for Energy Climate and MarineRyan InstituteUniversity of GalwayGalwayH91 TK33Ireland

Mathematical modeling of anaerobic digestion is a powerful tool to predict gas yields and optimize the *** Anaerobic digestion Model no.1(AdM1)is a widely implemented model for this ***,modeling full-scale biogas plants is challenging due to the extensive substrate and parameter characterization *** study describes the modification of the AdM1 through a simplification of individual process phases,characteristic components and required ***,the ability of the simplified model to simulate the co-digestion of grass silage and cattle slurry was evaluated using data from a full-scale biogas *** impacts of substrate composition(crude carbohydrate,protein and lipid concentration)and variability of carbohydrate degradability on simulation results were assessed to identify the most influential *** indicated that the simplified version was able to depict biogas and biomethane production with average model efficiencies,according to the nash-sutcliffe efficiency(nsE)coefficient,of 0.70 and 0.67,respectively,and was comparable to the original AdM1(average model efficiencies of 0.71 and 0.63,respectively).The variability of crude carbohydrate,protein and lipid concentration did not significantly impact biogas and biomethane output for the data sets *** contrast,carbohydrate degradability seemed to explain much more of the variability in the biogas and methane ***,the application of simplified models provides a reliable basis for the process simulation and optimization of full-scale agricultural biogas plants.

关键词： AdM1 Agricultural feedstocks Biogas technology Input variability Parameter estimation