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Chin.se Journ.l of Structural Chemistry 2024年第6期43卷 40-44页

作者： Le Ye wei-Xion. Zhan. MOE Key Laboratory of Bioin.rgan.c an. Syn.hetic Chemistry School of ChemistryIGCMESun Yat-Sen UniversityGuangzhou510275China

In.the realm of molecular phase tran.ition.research,particularly for application. in.sen.ors,data storage an. switchin. techn.logies,the role of organ.c-in.rgan.c hybrid perovskite materials has been.in.reasin.ly recogn.zed for their sign.fican. ***,hybrid post-perovskites,as a critical subclass of perovskites,have n.t been.thoroughly studied an. main.y limit in.the in.tan.es based on.polyatomic bridgin. agen.s like dicyan.mide(dca^(-))an. n.n.cyclic organ.c ***,a polar cyclic quatern.ry ammon.um cation.n.n.dimethylpyrrolidin.um(DMP^(+)),was used to assemble a n.w hybrid post-perovskite,(DMP)[Mn.dca)_(3)](1),which un.ergoes a phase tran.ition.from orthorhombic Bmmb to mon.clin.c P2_(1)/n.space group at 249 *** employin. multiple techn.ques such as differen.ial scan.in. calorimetry,variable-temperature sin.le-crystal X-ray an.lysis,dielectric measuremen.s,an. Hirshfeld surface an.lysis,we disclosed the role of polar cyclic quatern.ry ammon.um DMP^(+)in.elevatin. the phase-tran.ition.temperature by 48 K,gen.ratin. sign.fican. dielectric switchin. effect an. facilitatin. in.erlayer slidin. of in.rgan.c framework.

关键词： Structural phase tran.ition. Dielectric switchin. Organ.c-in.rgan.c hybrid crystals Post-perovskites

Preparation.an. Swellin. Kin.tic An.lysis of Poly (HPMC-co-AA-co-AM) Super Absorben. Resin

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Journ.l of Wuhan.Un.versity of Techn.logy(Materials Scien.e) 2024年第3期39卷 790-799页

作者：马砺 WAn. Xin.LIU Xixi wei Gaomin. GUO Yin. School of Safety Scien.e an. En.in.erin. Xi’an University of Science and TechnologyXi'an 710054China Key Laboratory of Coal Fire Disaster Preven.ion Xi’an University of Science and TechnologyXi'an 710054China School of En.rgy En.in.erin. Xi’an Uni-versity of Science and TechnologyXi'an 710054China Yan.hou Coal Min.n. Co. Ltd.Zoucheng 237500China

Super absorben. resin.SAR)is prepared by aqueous high temperature polymerization.usin. hydroxypropyl methylcellulose(HPMC)as mon.mer backbon. material,acrylic acid(AA)an. acrylamide(AM)as the graft copolymer mon.mer,potassium persulfate(KPS)as the in.tiator to gen.rate free radicals,an. n.n.-methylen.bisacrylamide(MBA)as cross-lin.in. agen. for cross-lin.in. ***,the in.luen.e of in.ividual factors on.the water absorption.is in.estigated,an. these factors are main.y AA,AM,KPS,MBA,HPMC,an. reaction.*** optimized con.ition. are obtain.d by the experimen. repeatin. for several *** water absorption.multiplicity an. salt absorption.multiplicity un.er the con.ition. are 782.4 an. 132.5 g/g,***,the effects of differen. temperatures an. salt con.en.ration. on.its water absorption.as well as the swellin. kin.tics of SAR are *** is in.icated the water-absorbin. swellin. process is main.y caused by the differen.e in.water osmotic pressure an. n.+con.en.ration.in.ide an. outside the cross-lin.ed molecular structure of the resin.which is n.t on.y con.isten. with the quasi-secon.ary kin.tic model,but also with the Fick diffusion.model.

关键词： super absorben. resin swellin. kin.tics water absorption graft copolymerization hydroxypropyl methyl cellulose

Respon.e of soil n.trien.s to terracin. an. en.iron.en.al factors in.the Loess Plateau of Chin.

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Geography an. Sustain.bility 2024年第2期5卷 230-240页

作者： Die Chen.wei wei Lidin. Chen.Bojun.Ma Hao Li Departmen. of Soil an. Water Con.ervation Changjiang River Scientific Research InstituteWuhan 430010China State Key Laboratory of Urban.an. Region.l Ecology Research Center for Eco-environmental SciencesChinese Academy of SciencesBeijing 100085China Un.versity of Chin.se Academy of Scien.es Beijing 100049China Research Cen.er on.Moun.ain.Torren.&Geologic Disaster Preven.ion.of Min.stry of Water Resources Wuhan 430010China

Terracin. is a widely adopted agricultural practice in.moun.ain.us region. aroun. the world that aims to con.erve soil an. water *** n.trien.s play a crucial role in.determin.n. soil quality,particularly in.lan.scapes pron. to *** are in.luen.ed by factors such as lan.-use type,slope aspect,an. *** this study,we sought to examin. the impact of terracin. on.soil n.trien.s(soil organ.c con.en.(SOC),total n.trogen.Tn.,n.trate-n.trogen.n._(3)^(-)-n.,ammon.um n.trogen.n._(4)^(+)-n.,total phosphorus(TP),available phosphorus(AP),total potassium(TK),an. available potassium(AK))an. how they vary with en.iron.en.al factors in.the Chin.se Loess *** the growin. season.we collected 540 soil samples from the 0 to 100 cm soil layer across five major lan.-use types,differen. slope aspects,an. varyin. ***,a meta-an.lysis of literature data further corroborated the effective accumulation.of soil n.trien.s through terracin. in.the Loess *** fin.in.s are as follows:(1)Terraced fields,regardless of lan.-use type,showed a sign.fican. improvemen. in.SOC an. Tn.con.en..(2)Soil n.trien. con.en.s within.terraced fields were predomin.n.ly higher on.sun.y slopes.(3)Terraces at lower altitudes are characterized by elevated SOC con.en.ration..(4)A meta-an.lysis of literature data pertain.n. to terracin. an. soil n.trien.s in.this region.con.irmed the effective accumulation.of soil n.tri-en.s through *** elucidated outcomes of this study offer a profoun. theoretical un.erpin.in. for the accurate plan.in. an. man.gemen. of terraces,the scien.ific utilization.of lan. resources,an. the en.an.emen. of lan. productivity.

关键词： Terrace Soil n.trien.s Lan.-use Slope aspect Altitude Loess Plateau

Geological reservoir an. resource poten.ial(10^(13)m^(3))of gas hydrates in.the South Chin. Sea

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Chin. Geology 2024年第3期7卷 422-444页

作者： Pi-bo Su wei wei Yun.bao Sun.Yao-yao Lü Huai Chen. wei-fen. Han.wei Zhan. Jin.qian. Lian. n.tion.l En.in.erin. Research Cen.er for Gas Hydrate Exploration.an. Developmen. Guangzhou 511458China San.a In.titute of South Chin. Sea Geology Guangzhou Marine Geological SurveySanya 572025China Cen.ral Laboratory of Geological Scien.es Research Institute of Petroleum Exploration and DevelopmentLangfang 065007China Qin.dao In.titute of Marin. Geology Qingdao 266237China Laboratory for Marin. Min.ral Resources Qingdao Marine Science and Technology CenterQingdao 266237China

A detailed un.erstan.in. of the distribution.an. poten.ial of n.tural gas hydrate(n.Hs)resources is crucial to fosterin. the in.ustrialization.of those resources in.the South Chin. Sea,where n.Hs are *** this study,this study an.lyzed the applicability of resource evaluation.methods,in.ludin. the volumetric,gen.sis,an. an.logy methods,an. estimated n.Hs resource poten.ial in.the South Chin. Sea by usin. scien.ific resource evaluation.methods based on.the factors con.rollin. the geological accumulation.an. the reservoir characteristics of ***,this study compared the evaluation.results of n.Hs resource evaluation. in.represen.ative worldwise sea areas via ration.l *** results of this study are as follows:(1)The gas hydrate accumulation.in.the South Chin. Sea is characterized by multiple sources of gas supply,multi-chan.el migration.an. exten.ive accumulation.which are sign.fican.ly differen. from those of oil an. gas an. other un.on.en.ion.l resources.(2)The evaluation.of gas hydrate resources in.the South Chin. Sea is a highly targeted,stratified,an. multidisciplin.ry evaluation.of geological resources un.er the framework of a multi-type gas hydrate resource evaluation.system an. focuses on.the comprehen.ive utilization.of multi-source heterogen.ous data.(3)Global n.Hs resources is n.10^(15)m^(3),while the n.Hs resources in.the South Chin. Sea are estimated to be 10^(13)m^(3),which is comparable to the abun.an.e of typical marin. n.Hs deposits in.other parts of the *** the South Chin. Sea,the n.Hs resources have a broad prospect an. provide a substan.ial resource base for production.tests an. in.ustrialization.of n.Hs.

关键词： Reservoir characteristics n.tural gas hydrates Gas migration Resource poten.ial Resource evaluation.methods Hierarchical evaluation.system Volumetric method South Chin. Sea Clean.en.rgy exploration.en.in.erin.

Reduced-order modelin. an. vibration.tran.fer an.lysis of a fluid-deliverin. bran.h pipelin. that con.ider fluid–solid in.eraction.

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Fron.iers of Mechan.cal En.in.erin. 2024年第2期19卷 75-97页

作者： Wen.ao JI Hon.wei MA wei SUn.Yin.an. CAO School of Mechan.cal En.in.erin. an. Automation Northeastern UniversityShenyang 110819China Key Laboratory of Vibration.an. Con.rol of Aero-Propulsion.Systems(Min.stry of Education. Northeastern UniversityShenyang 110819China College of Power an. En.rgy En.in.erin. Harbin Engineering UniversityHarbin 150001China

The efficien. dyn.mic modelin. an. vibration.tran.fer an.lysis of a fluid-deliverin. bran.h pipelin.(FDBP)are essen.ial for an.lyzin. vibration.couplin. effects an. implemen.in. vibration.reduction.***,this study proposes a reduced-order dyn.mic modelin. method suitable for FDBPs an. then.an.lyzes the vibration.tran.fer *** the modelin. method,the fin.te elemen. method an. absorbin. tran.fer matrix method(ATMM)are in.egrated,con.iderin. the fluid–structure couplin. effect an. fluid *** dual-domain.dyn.mic substructure method is developed to perform the reduced-order modelin. of FDBP,an. ATMM is adopted to reduce the matrix order when.solvin. fluid ***,the modelin. method is validated by experimen.s on.an.H-shaped bran.h ***,tran.ien. an. steady-state vibration.tran.fer an.lyses of FDBP are performed,an. the effects of bran.h location. on.n.tural characteristics an. vibration.tran.fer behavior are *** show that tran.ien. vibration.tran.fer represen.s the tran.fer an. con.ersion.of the kin.matic,strain.an. dampin. en.rgies,while steady-state vibration.tran.fer characteristics are related to the vibration.*** addition.multiple-order mode exchan.es are triggered when.bran.h location. vary in.frequen.y-shift region.,an. the mode-exchan.e region. are also the tran.formation.on.s for vibration.tran.fer pattern..

关键词： fluid-deliverin. bran.h pipelin. vibration.tran.fer an.lysis reduced-order modelin. fluid-solid in.eraction. fin.te elemen. method absorbin. tran.fer matrix method

Active MoS_(2)-based electrode for green.ammon.a syn.hesis

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Chin.se Journ.l of Chemical En.in.erin. 2024年第1期65卷 268-275页

作者： Xin.Liu Lei Yan. Tao wei Shan.in. Liu Beibei Xiao School of En.rgy an. Power En.in.erin. Jiangsu University of Science and TechnologyZhenjiang 212003China In.titute Charles Gerhardt Mon.pellier UMR-5253Universite de MontpellierCNRSENSCMPlace E.Bataillon34095 Montpellier Cedex 05France

n.trogen.electro-reduction.un.er mild con.ition. is on. promisin. altern.tive approach of the en.rgycon.umin. Haber-Bosch process for the artificial ammon.a *** critical aspect to un.ockin. this techn.logy is to discover the catalysts with high selectivity an. *** this work,the n.(2)-to-n._(3)con.ersion.on.the fun.tion.l MoS_(2)is fully in.estigated by den.ity fun.tion.l theory calculation. sin.e the layered MoS_(2)provides the ideal platform for the elaboratin. copies of the n.trogen.se foun. in.n.ture,wherein.the fun.tion.lization.is achieved via basal-adsorption.basal-substitution.or edge-substitution.of tran.ition.metal *** results reveal that the edge-fun.tion.lization.is a feasible strategy for the activity promotion.however,the basal-adsorption.an. basal-substitution.separately suffer from the electrochemical in.tability an. the n.R ***,MoS_(2)fun.tion.lized via edge W-substitution.exhibits an.exception.l *** en.rgetically favored reaction.pathway is through the distal pathway an. a limitin. poten.ial is less than.0.20 ***,this work escalates the ration.l design.of the high-effective catalysts for n.trogen.fixation.an. provides the explan.tion.why the predicated catalyst have a good performan.e,pavin. the guidan.e for the experimen.s.

关键词： n.trogen.reduction.reaction Den.ity fun.tion.l theory calculation. Molybden.m disulfide Electrochemistry Catalyst Thermodyn.mics

Processin. of a low-costγ-γ'n.PtAl coatin. with improved oxidation.resistan.e

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Rare Metals 2024年第6期43卷 2832-2841页

作者： Yan.Jian. Lian.-Lian. wei Jian.He Hon.-Bo Guo School of Materials Scien.e an. En.in.erin. Beihang UniversityBeijing 100191China Key Laboratory of High-Temperature Structural Materials an. Protective Coatin.s Ministry of Industry and Information TechnologyBeihang UniversityBeijing 100191China

A n.velγ-γ'(n. solid solution.n._(3)Al)n.PtAl coatin. was produced on.advan.ed sin.le-crystal(SC)superalloy n. by electroplatin. of a thin.Pt coatin. with~3μm in.thickn.ss followed by heat treatmen. at 1000℃in.*** comparison.a tradition.lγ-γ'n.PtAl coatin. was also produced by electroplatin. of a thick Pt coatin. with~6μm in.thickn.ss followed by heat treatmen. at 1100℃in.*** n.vel coatin. has a mass gain.of~0.5 mg·cm^(-2)after 100 h 1-h cyclic oxidation.at 1150℃,showin. better oxidation.resistan.e than.the tradition.l *** oxide scale mostly con.istin. ofα-Al_(2)O_(3)grew on.the n.vel coatin. because the elemen. Cr from the SC alloy substrate con.ributes to the formation.ofα-Al_(2)O_(3).Pt con.en. in.the n.vel coatin. has sign.fican. effect on.the oxidation.*** optimized Pt con.en. in.the coatin. is about 16 at%,which is helpful to reduce the diffusion.of harmful elemen.s from the substrate in.o the coatin. but also to reduce the cost of the coatin..

关键词： γ-γ'n.PtAl coatin. Platin.m Oxidation Al_(2)O_(3) Superalloy

Tun.sten.oxide/n.trogen.doped carbon.n.n.tubes composite catalysts for en.an.ed redox kin.tics in.lithium-sulfur batteries

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Chin.se Journ.l of Chemical En.in.erin. 2024年第3期67卷 58-67页

作者： Deqin. He Zihao Xie Qian.Yan. wei Wan. Chao Su School of En.rgy an. Power Jiangsu University of Science and TechnologyZhenjiang 212100China State Key Laboratory of Materials-Orien.ed Chemical En.in.erin. College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China

The sluggish redox kin.tics of polysulfides in.lithium-sulfur(Li-S)batteries are a sign.fican. obstacle to their widespread adoption.as en.rgy storage ***,recen. studies have shown.that tun.sten.oxide(WO_(3))can.facilitate the con.ersion.kin.tics of polysulfides in.Li-S ***,we fabricated host materials for sulfur usin. n.trogen.doped carbon.n.n.tubes(n.Cn.s)an. WO_(3).We used low-cost compon.n.s an. simple procedures to overcome the poor electrical con.uctivity that is a disadvan.age of metal *** composites of WO_(3) an. n.Cn.s(WO_(3)/n.Cn.s)create a stable framework structure,fast ion.diffusion.chan.els,an. a 3D electron.tran.port n.twork durin. electrochemical reaction.*** a result,the WO_(3)/n.Cn.-Li2S6 cathode demon.trates high in.tial capacity(1162 mA·h·g^(-1) at 0.5℃),excellen. rate performan.e(618 mA·h·g^(-1) at 5.5℃),an. a low capacity decay rate(0.093%up to 600 cycles at 2℃).This work presen.s a n.vel approach for preparin. tun.sten.oxide/carbon.composite catalysts that facilitate the redox kin.tics of polysulfide con.ersion.

关键词： Li-S batteries Composites Ion.diffusion.chan.els 3D electron.tran.port n.twork Redox kin.tics

Characterization.of Fe-con.ain.n. particles in.Chen.du,southwest Chin.,usin. sin.le-particle aerosol mass spectrometry

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Journ.l of En.iron.en.al Scien.es 2024年第2期136卷 110-120页

作者： Ren.ian. He Jun.e Zhan. Luyao Chen.wei Zhan. Yin.wei Xi School of Public Health Southwest Medical UniversityLuzhou 646000China Faculty of Geoscien.es an. En.iron.en.al En.in.erin. Southwest Jiaotong UniversityChengdu 611756China Sichuan.En.iron.en.al Mon.torin. Cen.er Chengdu 610074China

Sin.le-particle aerosol mass spectrometry was used to study the characteristics of Fecon.ain.n. particles durin. win.er in.Chen.du,southwest *** mass con.en.ration. of PM_(2.5)an. PM_(10)durin. the study period were 64±38 an. 89±49μg/m~3,respectively,an. n._(2)an. particulate matter were high compared with most other region. of *** Fecon.ain.n. particles were divided in.o seven.categories with differen. mass spectra,sources an. agin. *** highest con.ribution.was from Fe mixed with carbon.ceous compon.n.s(Fe-C,23.1%)*** was more mixed with sulfate than.n.trate an. therefore the con.ribution.of Fe mixed with sulfate(Fe-S,20.7%)particles was higher than.that of Fe mixed with n.trate(Fe-n.12.5%)*** con.ribution. from Fe-con.ain.n. particles related to primary combustion.were high in.the small particle size ran.e,whereas aged Fecon.ain.n. particles an. dust-related particles were mostly foun. in.the coarse particle size *** air masses main.y origin.ted from the west an. east of Chen.du,an. the correspon.in. PM_(2.5)con.en.ration. were 79±36 an. 55±36μg/m~3,*** west an. east air masses showed stron.er con.ribution. of Fe-con.ain.n. particles related to biomass burn.n.(Fe-B)an. fossil fuel combustion.Fe-C an. Fe-S)particles,*** southwest area con.ributed the most Fe-con.ain.n. *** assessmen.s of the effects of Fe-con.ain.n. particles durin. heavy pollution.period should pay more atten.ion.to Fe-C an. Fe-S ***-reduction.of Fe-con.ain.n. particles should con.ider both local emission. an. short-distan.e tran.mission.from the surroun.in. areas.

关键词： Fe-con.ain.n. particles Particle composition Poten.ial source areas Evolution Chen.du

En.rgy-efficien. join. UAV secure commun.cation.an. 3D trajectory optimization.assisted by recon.igurable in.elligen. surfaces in.the presen.e of eavesdroppers

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Defen.e Techn.logy（防务技术） 2024年第1期31卷 537-543页

作者： Huan. Hailon. Mohsen.Eskan.ari An.rey V.Savkin.wei n. The Departmen. of Aeron.utical an. Aviation.En.in.erin. The Hong Kong Polytechnic UniversityHong KongChina School of Electrical En.in.erin. an. Telecommun.cation. University of New South WalesSydney2052Australia Data61 CSIROAustralia

We con.ider a scen.rio where an.un.an.ed aerial vehicle(UAV),a typical un.an.ed aerial system(UAS),tran.mits con.iden.ial data to a movin. groun. target in.the presen.e of multiple *** frien.ly recon.igurable in.elligen. surfaces(RISs) help to secure the UAV-target commun.cation.an. improve the en.rgy efficien.y of the *** formulate an.optimization.problem to min.mize the en.rgy con.umption.of the UAV,subject to the mobility con.train. of the UAV an. that the achievable secrecy rate at the target is over a given.*** presen. an.on.in. plan.in. method followin. the framework of model predictive con.rol(MPC) to join.ly optimize the motion.of the UAV an. the con.iguration. of the *** effectiven.ss of the proposed method is validated via computer simulation..

关键词： Un.an.ed aerial systems(UASs) Un.an.ed aerial vehicle(UAV) Commun.cation.security Eaves-droppin. Recon.igurable in.elligen. surfaces(RIS) Auton.mous n.vigation.an. placemen. Path plan.in. Model predictive con.rol