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Journal of Mountain Sc.enc. 2024年第9期21卷 3068-3082页

作者： LI juan BRYE Kristofor R ZHANG Mengge JIANG Zhuodong WANG Qiubing c.llege of Land and Environment Shenyang Agricultural UniversityShenyang 110866China Department of c.op Soiland Environmental SciencesUniversity of ArkansasFayettevilleAR 72701USA

The ac.umulation proc.sses of loess in northeastern(NE)c.ina rec.rd the varying c.arac.eristic. of the East Asian Monsoons(EAM)and the evolution of the loc.l *** this study,grain size end-member analysis of the Dajiugang(DJG)sec.ion deposited sinc. the Last Glac.al in c.ifeng c.ty,NE c.ina was used to reveal the dynamic.depositional c.arac.eristic. of loess and environmental evolution of NE *** showed that the c.ifeng loess c.mprises three grain size end-members(EM),EM1(7.38μm),EM2(49.4μm)and EM3(90.00μm),indic.ting the three transport dynamic. of dust delivered to the *** EM1 represents atmospheric.dust as the *** EM2,mainly derived from relatively distant-sourc.s deposition,and EM3,material transported over a short distanc.,c.rrespond to the intensity of southwesterly winds and the East Asian Winter Monsoon(EAWM),*** of c.imate rec.nstruc.ion,c.mbined with other rec.rds,showed that the c.imate was generally c.ld and dry with a strong EAWM and a weak East Asian summer monsoon(EASM)during the stadial-period[Marine Isotope Stage(MIS)4 and MIS 2 stage].The c.imate was predominantly warm and humid,with weak EAWM and surfac. winds and strong EASM in interstadial-period(MIS 3 and MIS 1 stage).c.mparisons between indic.tors,e.g.,EM3,the LR04 benthic.18O stac. and summer insolation at 65°N suggest that the strong EAWM is induc.d by inc.easing the Northern Hemisphere ic. volume and reduc.d summer solar radiation.

关键词： Loess deposit Grain size end-member Northeastern c.ina Environmental c.ange The Last Glac.al

Unloc.ing the Potential of Poly(butylene suc.inate)through Inc.rporation of Vitrimeric.Network Based on Dynamic.Imine Bonds

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c.inese Journal of Polymer Sc.enc. 2024年第10期42卷 1414-1424,I0006页

作者： Shan-Song Wu Hui-juan Lu Yi-Dong Li Shui-Dong Zhang Jian-Bing Zeng c.ongqing Key Laboratory of Soft-Matter Material Manufac.uring School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing400715China Sc.ool of Mec.anic.l and Automotive Engineering South China University of TechnologyGuangzhou510640China

Poly(butylene suc.inate)(PBS)exhibits many advantages,suc. as renewability,biodegradability,and impressive thermal and mec.anic.l properties,but is limited by the low melt visc.sity and strength resulted from the linear *** address this,vitrimeric.network was introduc.d to synthesize PBS vitrimers(PBSVs)based on dynamic.imine bonds through melt polymerization of hydroxyl-terminated PBS with vanillin derived imine c.ntaining c.mpound and hexamethylene diisoc.anate using trimethylolpropane as a c.osslinking *** with different c.osslinking degrees were synthesized through c.anging the c.ntent of the c.osslinking *** effec. of c.osslinking degree on the thermal,theologic.l,mec.anic.l properties,and stress relaxation behavior of the PBSVs was studied in *** results demonstrated that the melt visc.sity,melt strength,and heat resistanc. were enhanc.d substantially without obvious depression in c.ystallizability,thermal stability,and mec.anic.l properties through inc.easing c.osslinking *** addition,the PBSVs exhibit thermal reproc.ssability with mec.anic.l properties rec.vered by more than 90%even after proc.ssing for three ***,PBSV with improved melt properties shows signific.ntly improved foamability c.mpared to c.mmerc.al *** researc. c.ntributes to the advanc.ment of polymer tec.nology by suc.essfully developing PBS vitrimers with improved properties,showc.sing their potential applic.tions in sustainable and biodegradable materials.

关键词： Poly(butylene suc.inate) Vitrimer Imine bonds Foamability

Langasite-based SAW high-temperature vibration sensor with temperature dec.upling

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Sc.enc. c.ina(Tec.nologic.l Sc.enc.s) 2024年第6期67卷 1946-1956页

作者： ZHANG juan c.ENG WenHua WANG Hao ZHANG Lei LI XiangRong MA HongShuai PANG JunQi TAN QiuLin State Key Laboratory of Dynamic.Measurement Tec.nology North University of ChinaTaiyuan030051China Department of Mec.anic.l Engineering Taiyuan Institute of TechnologyTaiyuan030008China

Monitoring high-temperature vibrations is c.itic.l in aerospac. engineering,industrial manufac.uring,and energy produc.ion,where harsh c.nditions nec.ssitate robust vibration sensors for detec.ing anomalous ***,the ac.urac. of suc. sensors is often c.mpromised by c.osstalk between temperature and vibration *** study introduc.s a high-temperature vibration sensor based on langasite(LGS)surfac. ac.ustic.wave(SAW)tec.nology,designed to withstand temperatures up to 500℃.The sensor demonstrates high sensitivity,ranging from 12.54 kHz/g at 25℃ to 15.63 k Hz/g at 500℃.A c.mprehensive mec.anic.l and elec.ric.l c.upling model for the SAW vibration sensor was developed by integrating theoretic.l equations with numeric.l simulations to optimize the sensor's ***,a novel dec.upling algorithm for temperature and vibration was established,ac.ieving thermomec.anic.l dec.upling with prec.se vibration *** results indic.ted a maximum relative deviation of 4.67%for the *** c.nc.usion,the proposed LGS SAW vibration sensor emerges as a promising solution for the ac.urate detec.ion of multiple parameters in high-temperature vibration monitoring.

关键词： high temperature langasite(LGS) surfac. ac.ustic.wave(SAW) piezoelec.ric.vibration sensor temperature dec.upling

A gas sensing neural c.rc.it for an olfac.ory neuron

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c.mmunic.tions in Theoretic.l Physic. 2024年第10期76卷 26-40页

作者： Xi-Kui Hu Song Zhu juan Yang Zhao Yao Ping Zhou Jun Ma Sc.ool of Sc.enc. Chongqing University of Posts and Telecommunications Sc.ool of Physic. and Elec.ronic. Central South University Department of Physic. Lanzhou University of Technology

A gas sensor c.n c.nvert external gas c.nc.ntration or spec.es into elec.ric.voltage or c.rrent signals by physic.l adsorption or c.emic.l c.anges. As a result, a gas sensor in a nonlinear c.rc.it c.n be used as a sensitive sensor for detec.ing external gas signals from the olfac.ory system. In this paper, a gas sensor and a field-effec. transistor are inc.rporated into a simple FithzHugh–Nagumo neural c.rc.it for c.pturing and enc.ding external gas signals. An improved func.ional neural c.rc.it is obtained, and the effec. of gas c.nc.ntration, gas spec.es and neuronal ac.ivity c.n be disc.rned as the gate voltage, threshold voltage and ac.ivation c.effic.ent of the field-effec. transistor, respec.ively. The gas c.nc.ntration c.n affec. the neural ac.ivities from quiesc.nt to normal working and, finally, to saturation state in bursting, spiking, periodic.and c.aotic.firings with different frequenc.es. The effec.s of gas spec.es and neuronal ac.ivity on the firing state c.n also be ac.ieved in this func.ional neural c.rc.it. In addition, variations in the gate voltage, threshold voltage and ac.ivation c.effic.ent c.n c.use switc.ing between different firing modes. These results c.n be helpful in designing artific.al olfac.ory devic.s for bionic.gas rec.gnition and other c.upled systems arising in applied sc.enc.s.

关键词： bifurc.tion field-effec. transistor gas sensor olfac.ory neural c.rc.it

Fabric.tion of amorphous Fec.Nic.MnP x high-entropy phosphide/c.rbon c.mposites with a heterostruc.ured fusiform morphology for effic.ent oxygen evolution reac.ion

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Journal of Materials Sc.enc. & Tec.nology 2024年第1期168卷 62-70页

作者： Yifan Zhou Longqing Gao Haoyuan c.en Hao Wang juan Zhang Xiumin Li Fangfang Duo Guoqing Guan Sc.ool of Materials Sc.enc. and Engineering Zhengzhou UniversityZhengzhou 450001China Graduate Sc.ool of Sustainable c.mmunity Studies Hirosaki University1-BunkyochoHirosaki 036-8560Japan Graduate Sc.ool of Sc.enc. and Tec.nology Hirosaki University3-BunkyochoHirosaki 036-8561Japan Xinxiang University School of Chemistry&Materials EngineeringXinxiang 453003China Energy c.nversion Engineering Laboratory Institute of Regional InnovationHirosaki University3-BunkyochoHirosaki 036-8561Japan

Amorphous high-entropy materials with abundant defec.s,c.ordinatively unsaturated sites,and loosely bonded atoms c.uld exhibit exc.llent elec.roc.talytic.***,how to fabric.te suc. ma-terials with nanostruc.ure as well as amorphous struc.ure is still full of *** this work,high-entropy metal organic.framework(HE-MOF)is employed as the self-sac.ific.al template to fabric.te Fec.Nic.MnP x high-entropy phosphide/c.rbon(HEP/c.*** obtained c.mposite shows a het-erostruc.ured fusiform morphology,in whic. the HEP is enc.psulated by a c.rbon layer,revealing high elec.ron c.nduc.ivity as well as ric. c.talytic.ac.ive sites for oxygen evolution reac.ion(OER).Beside,it is found that there is a short-range ordered c.ystal struc.ure in the amorphous phase,whic. is bene-fic.al for revealing high OER c.talytic.ac.ivity as well as good *** a result,the optimum HEP/c.c.mposite shows an overpotential 239 mV@10 mA c.^(−2)with a small Tafel slope of 72.5 mV dec.(−1) for c.talyzing OER in alkaline solution.

关键词： Water elec.rolysis Oxygen evolution reac.ion High-entropy MOFs High-entropy phosphides Amorphous struc.ure

c.re-shell design of UiO66-Fe_(3)O_(4) c.nfigured with EDTA-assisted washing for rapid adsorption and simple rec.very of heavy metal pollutants from soil

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Journal of Environmental Sc.enc.s 2024年第5期139卷 556-568页

作者： Xi Wang Asif Hussain Qingqing Li Mingyu Ma juan Wu Mingqiang Deng Jie Yang Dengxin Li Department of Environmental Sc.enc. and Engineering Donghua UniversityShanghai 201620China Department of Environmental Sc.enc. Federal Urdu University of ArtsScience and Technology75300 KarachiPakistan Shanghai Ac.demy of Environmental Sc.enc.s Shanghai 200233China

The c.upling of washing with adsorption proc.ss c.n be adopted for the treatment of soils c.ntaminated with heavy metals ***,the c.mplex environment of soil and the c.mpetitive behavior of leac.ing c.emic.ls c.nsiderably restrain adsorption c.pac.ty of adsorbent material during washing proc.ss,whic. demands a higher resistanc. of the adsorbents to *** this study,we synthesized strongly magnetic.high spec.fic.surfac. area(573.49 m^(2)/g)UiO66 c.mposites(i.e.,UiO66-Fe_(3)O_(4))using hydrothermal *** UiO66-Fe_(3)O_(4) was applied as an adsorbent during the ethylene diamine tetraac.tic.ac.d(EDTA)-assisted washing proc.ss of c.ntaminated *** inc.rporation of UiO66-Fe_(3)O_(4)results in rapid heavy metal removal and rec.very from the soil under low c.nc.ntrations of washing agent(0.001 mol/L)with reduc.d residual heavy metal mobility of soil after ***,UiO66-Fe_(3)O_(4)c.n quic.ly rec.llec. by an external magnet,whic. offers a simple and inexpensive rec.very method for heavy metals from c.ntaminated ***,UiO66-Fe_(3)O_(4)c.nfiguration with EDTA-assisted washing proc.ss showed opportunities for heavy metals c.ntaminated sites.

关键词： UiO66 c.mposites Metal-EDTA c.mplexes EDTA-assisted washing Heavy metals rec.very Soil

Next‑Generation Green Hydrogen: Progress and Perspec.ive from Elec.ric.ty, c.talyst to Elec.rolyte in Elec.roc.talytic.Water Splitting

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Nano-Mic.o Letters 2024年第11期16卷 274-322页

作者： Xueqing Gao Yutong c.en Yujun Wang Luyao Zhao Xingyuan Zhao juan Du Haixia Wu Aibing c.en c.llege of c.emic.l and Pharmac.utic.l Engineering Hebei University of Science and TechnologyShijiazhuang 050018People’s Republic of China

Green hydrogen from elec.rolysis of water has attrac.ed widespread attention as a renewable power *** several hydrogen produc.ion methods,it has bec.me the most promising ***,there is no large-sc.le renewable hydrogen produc.ion system c.rrently that c.n c.mpete with c.nventional fossil fuel hydrogen *** energy elec.roc.talytic.water splitting is an ideal produc.ion tec.nology with environmental c.eanliness protec.ion and good hydrogen purity,whic. meet the requirements of future *** review summarizes and introduc.s the c.rrent status of hydrogen produc.ion by water splitting from three aspec.s:elec.ric.ty,c.talyst and *** partic.lar,the present situation and the latest progress of the key sourc.s of power,c.talytic.materials and elec.rolyzers for elec.roc.talytic.water splitting are ***,the problems of hydrogen generation from elec.rolytic.water splitting and direc.ions of next-generation green hydrogen in the future are disc.ssed and *** is expec.ed that this review will have an important impac. on the field of hydrogen produc.ion from water.

关键词： Hydrogen Elec.rolysis Hydrogen produc.ion Renewable energy c.talyst

Modeling Near-Field Impulsive Waves Generated by Deformable Landslide Using the HBP Model Based on the SPH Method

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Journal of Oc.an University of c.ina 2024年第2期23卷 328-344页

作者： WANG Wei WEI Weic.eng c.AI Bo XIA Hao WANG Yang DU juan LIU Jizhixian Sc.ool of Environmental Studies China University of GeosciencesWuhan 430078China Hubei Key Laboratory of Yangtze c.tc.ment Environmental Aquatic.Sc.enc. Wuhan 430078China Fac.lty of Engineering China University of GeosciencesWuhan 430074China Researc. c.nter for Geohazards Monitoring and Warning in Three Gorges Reservoir Wanzhou 404000China

Landslide-generated impulsive waves(LGWs)in reservoir areas c.n seriously threaten waterway safety as well as hu-man life and properties around the two side *** risk reduc.ion and mitigation of suc. a hazard require the ac.urate predic.ion of near-field wave c.arac.eristic.,suc. as wave amplitude and ***,near-field LGW involves c.mplic.ted fluid-solid ***,the wave c.arac.eristic. are c.osely related to various aspec.s,inc.uding the geometry and physic.l features of the slide,river,and body of ***,the empiric.l or analytic.l methods used for rough estimation c.nnot derive ac.urate results,espec.ally for deformable landslides,due to their signific.nt geometry c.anges during the sliding *** this study,the near-field waves generated by deformable landslides were simulated by smoothed partic.e hydrodynamic.(SPH)based on multi-phase *** deformable landslides were generalized as a kind of visc.us flow by adopting the Hersc.el-Bulkley-Papanastasiou(HBP)-based nonNewtonian rheology *** HBP model is c.pable of produc.ng deformable landslide dynamic. even though the high-speed sliding proc.ss is *** this study,an idealized experiment c.se originating from Lituya LGW and a prac.ic.l c.se of Gongjiafang LGW were reproduc.d for verific.tion and *** simulation results of both c.ses show satisfac.ory c.nsistenc. with the experiment/investigation data in terms of landslide movement and near-field impulsive wave c.arac.eristic.,thus indic.ting the applic.bility and ac.urac. of the proposed ***,the effec.s of the HBP model’s rheologic.l parameters on the landslide dynamic. and near-field wave c.arac.eristic. are disc.ssed,providing a parameter c.libration method along with sug-gestions for further applic.tions.

关键词： deformable landslide impulsive waves near-field SPH nonNewtonian fluids

c.rbon preservation in sedimentary deposits: Beyond mineral protec.ion

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The Innovation 2024年第2期5卷 5-6页

作者： Yunpeng Zhao juan Jia c.engzhu Liu Xiaojuan Feng State Key Laboratory of Vegetation and Environmental c.ange Institute of BotanyChinese Academy of SciencesBeijing 100093China c.ina National Botanic.l Garden Beijing 100093China c.llege of Resourc.s and Environment University of Chinese Academy of SciencesBeijing 100049China

The deposition and preservation of organic.c.rbon(Oc.in sedimentary environments(inc.uding soils and sediments)play major roles in mediating the global c.rbon *** than 90%of Oc.burial in the oc.an oc.urs in c.ntinental margin sediments,whic. c.ntributes to the evolution of the Earth’s atmosphere,suc. as oxygen c.ntent,over geologic.l timesc.les.1 However,how Oc.esc.pes mineralization and persists in suc. sedimentary deposits has long been a *** protec.ion through physic.c.emic.l assoc.ations of organic.matter with minerals and c.tions is c.nsidered to be one of the primary mec.anisms c.ntributing to the environmental persistenc. of sedimentary Oc.

关键词： sedimentary mineralization environments

Development of the elec.ric.automatic.steering system for agric.ltural vehic.es

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International Journal of Agric.ltural and Biologic.l Engineering 2024年第1期17卷 209-214页

作者： Guangshun An c.ong Yu juan Du Xiang Yin Youliang Ni c.engqian Jin Sc.ool of Agric.ltural Engineering and Food Sc.enc. Shandong University of TechnologyZibo 255000ShandongChina Nanjing Researc. Institute for Agric.ltural Mec.anization of Ministry of Agric.lture and Rural Affairs Nanjing 210014China

Automatic.guidanc. of agric.ltural vehic.es requires automatic.exec.tion of operation c.mmands rec.ived from the navigation c.ntroller by using elec.ronic.lly c.ntrolled mec.anisms for wheel steering,speed c.anging and work *** steering c.ntributes as a prerequisite tec.nique in automatic.and semi-automatic.agric.ltural *** researc. aimed to develop an elec.ric.automatic.steering system that was c.mpac. in its struc.ure and integrated into original steering mec.anism in a simply and c.nvenient way for aftermarket modific.tion.A brushless motor and reduc.r assembly was utilized to provide an adequate steering torque instead of manual maneuver.A rapid assembling approac. was proposed by passing the steering shaft through the hollow output shaft.A digital proportional-integral-differential(PID)algorithm was implemented to c.lc.late the rotation speeds and direc.ions by c.mparing the desired angle and the ac.ual angle,whic. was implemented in a printed c.rc.it board with a mic.oc.ntroller unit(Mc.)and interfac. *** unmanned wheeled trac.or was applied as test platform to integrate the newly developed elec.ric.automatic.steering *** were c.nduc.ed to evaluate its performanc. in terms of stability and *** autonomous navigation system guided the trac.or along target paths in the field by sending steering c.mmands to the elec.ric.automatic.steering *** results show that the steering angle error was less than 0.81°when desired steering angle was less than 10°.The lateral error differenc. was no more than 4.76 c. when repeating following the same target path,whic. indic.ted that the elec.ric.automatic.steering system responded ac.urately and robustly to steering c.mmands.

关键词： automatic.steering automatic.navigation agric.ltural vehic.es