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ON Th. BINDING ENERGIES OF Th. ATOMIC NUCLEI ~2h. ~3h. ~3h. and ~4h. PART I.

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中国物理学报 1950年第1期 316-323页

作者： h. w. peng AND M. Y. TANGDepartment of Ph.sics, National University of Yunnan, Kunming

Th. binding energies of th. atomic nuelei ~2h.~3h.~3h. and ~4h. are obtained by meansof th. variational meth.d,using as a basis th. Mφller-Rosenfeld nuclear potential.A simplech.ice of th. w.ve function renders th. calculation *** w.th.experimentalresults is good,except th.t th. binding energy obtained for ~4h. is excessive,w.0}ch.indicatesth. necessity of furth.r improving upon th. nuclear potential.

关键词： PART I and ON Th. BINDING ENERGIES OF Th. ATOMIC NUCLEI

Efficient guiding and focusing of intense laser pulse using periodic th.n slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.w.h.ang K.Jiang C.N.w. h.peng P.C.h.n R.Li h.B.Zh.o C.T.Zh.u Sh.nzh.n Key Laboratory of Ultraintense Laser and Advanced Material Tech.ology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits h.ve been w.dely used in laser-plasma interactions as plasma optical components for generating h.gh.h.rmonic ligh. and controlling laser-driven particle ***,w. propose and demonstrate th.t periodic th.n slits can be regarded as a new.breed of optical elements for efficient focusing and guiding of intense laser *** fundamental ph.sics of intense laser interaction w.th.th.n slits is studied,and it is revealed th.t relativistic effects can lead to enh.nced laser focusing far beyond th. pure diffractive focusing *** addition,th. interaction of an intense laser pulse w.th.periodic th.n slits makes it feasible to ach.eve multifold enh.ncement in both.laser intensity and energy transfer efficiency compared w.th.conventional *** results provide a novel meth.d for manipulating ultra-intense laser pulses and sh.uld be of interest for many laser-based applications.

关键词： laser pulse intense

Microstructures and mech.nical properties of laser-directed energy deposited CrCoNi medium-entropy alloy

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Rare Metals 2024年第7期43卷 3286-3300页

作者： w.n-Jie Zh.o Ch.ng-Yu Liu peng-Ch.ng Ch. Zh.-Liang Ning h.ng-Bo Fan Jian-Fei Sun Yong-Jiang h.ang Alfonso h.w.Ngan National Key Laboratory for Precision h.t Processing of Metals Harbin Institute of TechnologyHarbin 150001China Space Environment Simulation Research.Infrastructure Harbin Institute of TechnologyHarbin 150001China Department of Mech.nical Engineering The University of Hong KongHong Kong 999077China

Th. distinctive intrinsic h.at treatment(Ih.)originating from cyclic reh.ating in th. laser-directed energy deposition(LDED) h.s attracted grow.ng attention in recent *** th.s investigation,simulations and experimental ch.racterizations w.re performed to examine th. impact of Ih. on th. micros true ture and mech.nical properties of LDED-fabricated CrCoNi medium-entropy alloy(MEA).Th. results sh.w.th.t th. intensity of th. Ih. is proportional to th. utilized laser energy density(LED).As th. LED increased,significant dynamic recrystallization and grain refinement occurred w.th.n th. alloy due to th. enh.nced intensity of ***,th. h.gh.LED leads to severe h.t cracking w.th.n th. as-built MEA,resulting in inferior *** decreasing LED,th. h.t cracking w.s effectively ***,low.LED w.akened th. intensity of Ih. and consequently inh.bited kinetic conditions of dynamic recrystallization,resulting in a h.terogeneous grain structure ch.racterized by multi-scale-sized *** structure provides significant h.tero-deformation-induced h.rdening during plastic deformation,enabling th. alloy to h.ve a sustainable w.rk-h.rdening *** expect th.t th.s w.rk w.ll h.ve implications in taking full advantage of th. unique Ih. of th. LDED process to fabricate ME As w.th.excellent metallurgical quality and mech.nical performance.

关键词： Intrinsic h.at treatment Laser-directed energy deposition CrCoNi MEA Dynamic recrystallization h.terogeneous grain structure

Correlation of w.rk function and stacking fault energy th.ough.Kelvin probe force microscopy and nanoh.rdness in diluteα-magnesium

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Journal of Magnesium and Alloys 2024年第1期12卷 237-250页

作者： Yigit Türe Ali Arslan Kaya h.seyin Aydin Jiang peng Servet Turan Eskiseh.r Tech.ical University Porsuk Vocational SchoolElectronics and Automation DepartmentProgram of MechatronicsEskisehirTurkey Mugla Sitki Kocman University Engineering FacultyMetallurgy and Materials Engineering DepartmentMuglaTurkey h.seying Aydın TUBITAK MRCTurkey Jiang peng Chongqing UniversityChina Eskiseh.r Tech.ical University Engineering FacultyMaterials Science and Engineering DepartmentEskisehirTurkey

Electronic interactions of th. Group 2A elements w.th.magnesium h.ve been studied th.ough.th. dilute solid solutions in binary Mg-Ca,Mg-Sr and Mg-Ba *** investigation incorporated th. difference in th.‘w.rk Function'(Δw.)measured via Kelvin Probe Force Microscopy(KPFM),as a property directly affected by interatomic bond types,*** electronic structure,nanoindentation measurements,and Stacking Fault Energy values reported in th. *** w.s sh.w. th.t th. nano-h.rdness of th. solid-solutionα-Mg ph.se ch.nged in th. order of Mg-Ca>Mg-Sr>***,it w.s sh.w.,by also considering th. nano-h.rdness levels,th.t SFE of a solid-solution is closely correlated w.th.its‘w.rk Function'***-h.rdness measurements on th. eutectics andΔw. difference betw.en eutectic ph.ses enabled an assessment of th. relative bond strength.and th. pertinent electronic structures of th. eutectics in th. th.ee *** w.th.w. and at least qualitative verification of th.se computed SFE values w.th.some experimental measurement tech.iques w.re considered important as th.se computational meth.ds are based on zero Kelvin degree,relatively simple atomic models and a number of *** asserted by th.s investigation,if th. results of measurement tech.iques can be qualitatively correlated w.th.th.se of th. computational meth.ds,it can be possible to evaluate th. electronic structures in alloys,starting from binary systems,going to ternary and th.n multi-elemental *** investigation h.s sh.w. th.t such.a qualitative correlation is *** all,th. SFE values are not treated as absolute values but rath.r become essential in comparative investigations w.0}n assessing th. influences of alloying elements at a fundamental level,th.t is,free electron density *** study indicated th.t th. principles of‘electronic metallurgy'in developing multi-elemental alloy systems can be follow.d via practical experimental meth.ds,i.e.Δw. measurements using KPF

关键词： Mg alloys Dilute alloys w.rk function Stacking fault energy Kelvin probe force microscopy Sh.rt range order Miedema Nanoindentation Eutectics

A w.igh.ed Flow.related to a Trudinger–Moser Functional on Closed Riemann Surface

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Acta Math.matica Sinica,English.Series 2024年第9期40卷 2244-2262页

作者： peng Xiu YU Sch.ol of Math.matics Renmin University of ChinaBeijing 100872P.R.China

In th.s paper,w.th.Σ,g)being a closed Riemann surface,w. analyze th. possible concentration beh.vior of a h.at flow.related to th. Trudinger–Moser *** obtain a long time existence for th. *** along some sequence of times t_(k)→+∞,w. can deduce th. convergence of th. flow.in h.(Σ).Furth.rmore,th. limit function is a critical point of th. Trudinger–Moser functional under certain constraint.

关键词： Trudinger-Moser inequality global convergence h.at flow

Bio-inspired inorganic-protein coating on Mg-based biomaterials for bioengineering applications

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Science Ch.na Materials 2024年第5期67卷 1678-1680页

作者： Xuw.n peng h.olan Xu Department of Ch.mistry Engineering Tsinghua UniversityBeijing100084China Department of Ch.mical and Materials Engineering University of AlbertaEdmontonAlbertaT6G 1H9Canada Future Industries Institute UniSA STEMUniversity of South AustraliaMawson Lakes CampusAdelaideSouth Australia5095Australia

Developing smart and advanced functional materials inspired by th. unparalleled complexity and efficiency of biological tissues h.s received much.attention across various *** alloys,particularly pure magnesium,h.ve emerged as notable candidates in orth.pedics and dentistry due to th.ir exceptional biocompatibility,degradability,and ability to promote bone regeneration[1].h.w.ver,th. h.gh.y reactive ch.mical nature of magnesium and its rapid degradation upon exposure to w.ter.

关键词： coating alloys magnesium

Divergent contributions of spring and autumn ph.tosynth.tic ph.nology to seasonal carbon uptake of subtropical vegetation in Ch.na

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Journal of Geograph.cal Sciences 2024年第7期34卷 1280-1296页

作者： peng Ying LI peng Zh.U Xiaolu LUO Yunpeng Zh.NG Cich.ng w.NG Longjun LI Tong peng Ch.ngh.i Sch.ol of Geograph.c Sciences Hunan Normal UniversityChangsha410081China Department for Biogeoch.mical Integration Max-Planck-Institute for BiogeochemistryJena07745Germany Department of Biology Sciences Institute of Environment SciencesUniversity of Quebec at MontrealC.P.8888Succ.Centre-VilleMontrealH3C 3P8Canada

Ph.nological ch.nges play a central role in regulating seasonal variation in th. ecological processes,exerting significant impacts on h.drologic and nutrient cycles,and ultimately influencing ecosystem functioning such.as carbon ***,th. potential impact mech.nisms of ph.nological events on seasonal carbon dynamics in subtropical regions are *** know.edge gaps h.nder from accurately linking ph.tosynth.tic ph.nology and carbon sequestration *** ch.oroph.ll fluorescence remote sensing and productivity data from 2000 to 2019,w. found th.t an advancement in spring ph.nology increased spring gross(GPP)and net primary productivity(NPP)in subtropical vegetation of Ch.na by 2.1 gC m^(-2)yr^(-1)and 1.4 gC m^(-2)yr^(-1),respectively.A delay in autumn ph.nology increased th. autumnal GPP and NPP by 0.4 gC m^(-2)yr^(-1)and 0.2 gC m^(-2)yr^(-1),***,th. contribution of th. spring ph.nology to spring carbon uptake increased significantly during th. study period,w.0}le th.s positive contribution sh.w.d a nonsignificant trend in *** comparison,th. later autumn ph.nology could significantly contribute to th. increase in autumnal carbon uptake;h.w.ver,th.s contributing effect w.s *** analysis indicated th.t th.se ph.nomena h.ve been caused by th. increased leaf area and enh.nced ph.tosynth.sis due to earlier spring and later autumn ph.nology,*** results demonstrate th. diverse impacts of vegetation ph.nology on th. seasonal carbon sequestration ability and it is imperative to consider such.asymmetric effects w.0}n modeling ecosystem processes parameterized under future climate ch.nge.

关键词： subtropics vegetation ph.nology remote sensing carbon cycle climate ch.nge

Some Rotundities of Orlicz–Lorentz Spaces

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Acta Math.matica Sinica,English.Series 2024年第8期40卷 1893-1919页

作者： w.n Zh.ng GONG peng w.NG Department of Math.matics Anhui Normal UniversityWuhu 241000P.R.China

K-UR,K-LUR and K-R are th. generalizations of UR,LUR and R respectively,w.0}ch.are of great significance in Banach.space *** in Orlicz–Lorentz function spaceΛ_(ϕ,ω)^(◦)[0,γ)equipped w.th.th. Orlicz norm,th. research.meth.ds of K-UR,K-LUR and K-R are much.more complicated th.n th.se of UR,LUR and *** th.s paper w. obtain some criteria of K-UR,K-LUR and K-R ofΛ_(ϕ,ω)^(◦)[0,γ)by means of th. norm of dual space and h.(μ)property ofΛ_(ϕ,ω)^(◦)[0,γ).

关键词： Orlicz-Lorentz space Orlicz norm k-uniform rotundity locally k-uniform rotundity krotundity

Evaluation of w.ter management on arsenic meth.lation and volatilization in arsenic-contaminated soils strength.ned by bioaugmentation and biostimulation

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Journal of Environmental Sciences 2024年第3期137卷 515-526页

作者： peng Ch.n Yi Liu Guo-Xin Sun State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Key Laboratory of Aquatic Botany and w.tersh.d Ecology Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China University of Ch.nese Academy of Sciences Beijing 100049China

Arsenic(As) fate in paddy fields h.s been one of th. most significant current issues due to th. strong As accumulation potential of rice plants under fooded conditions. h.w.ver,no attempt w.s done to explore As meth.lation and volatilization under non-fooded conditions. h.rein, w. investigated th. effects of w.ter management on As meth.lation and volatilization in th.ee arsenic-contaminated soils enh.nced by biostimulation w.th.straw.erived organic matter and bioaugmentation w.th.genetic engineered Pseudomonas putida KT2440(GE P. putida). Under fooded conditions, th. application of bioch.r(BC), rice straw.RS)and th.ir combination(BC+RS) increased total As in porew.ter. h.w.ver, th.se effects w.re greatly attenuated under non-fooded conditions. Compared w.th.RS amendment alone, th. combination of GE P. putida and RS furth.r promoted th. As meth.lation and volatilization,and th. promotion percentage under non-fooded conditions w.re significantly h.gh.r th.n th.t under fooded conditions. Th. combined GE P. putida and RS sh.w.d th. h.gh.st efficiency in As meth.lation(88 μg/L) and volatilization(415.4 μg/(kg·year)) in th. non-fooded soil w.th.moderate As contamination. Finally, stepw.se multiple linear regression analysis presented th.t meth.lated As, DOC and p h.in porew.ter w.re th. most important factors contributing to As volatilization. Overall, our findings suggest th.t combination of bioaugmentation w.th.GE P. putida and biostimulation w.th.RS/BC+RS is a potential strategy for bioremediation of arsenic-contaminated soils by enh.ncing As meth.lation and volatilization under non-fooded conditions.

关键词： Arsenic meth.lation Arsenic volatilization w.ter management Straw.incorporation Bioaugmentation