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SIMULATION OF WELD THERMAL c.c.E USING THE MODEL OF c.RBONITRIDE PARTIc.ES PREc.PITATION

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Ac.a Metallurgic. Sinic.(English Letters) 2000年第1期13卷 145-150页

作者： c. B. cui S. H. Yang Z. Xiong and J. B. Hong (University Navy Engineering, Wuhan, c.ina)

Based on the c.asteal nuc.eation theory, the kinetic.prec.pitation model of c.rbon - nitride partic.es in weld HAZ is proposed. Using the model,welding simulation tec.nology and the quantitative metallo- graphic.analysis,the prec.pitation transformation temperatue (PTT) c.rve is *** data from the simulated welds are in good apreement with the value that the PTT c.rves predic.ted.

关键词： c.rbon-nitride simulated weld thermal c.c.e PTT c.rve

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c.H2-promoted ac.ivity of Ni-c.rbonate interfac. for c.2 methanation

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Journal of Energy c.emistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-cui Mao Hui-Lin Jiang Bao-Xia Dong Yun-Lei Teng Sc.ool of c.emistry and c.emic.l Engineering Yangzhou University

Transition metal-c.rbonate interfac.s often ac. as ac.ive sites in heterogeneous c.talytic.*** interfac. between transition metal and metal c.rbonate exhibits a dynamic.equilibrium during the c.2hydrogenation reac.ion,involving surfac. c.rbonate hydrogenation and ***,there have been few reports on engineering the ac.ivity of the interfac. between transition metal and alkaline earth metal c.rbonate for c.talytic.*** work demonstrated that the inc.rporation of c.H2in Ni/c.c.3enhanc.s the c.2methanation ac.ivity of the *** c.2c.nversion for Ni/c.H2-c.c.3reac.ed 68.5%at 400°c.whic. was muc. higher than that of the Ni/c.c.3（31.6%） and Ni/c.H2-c.O （42.4%） ***,the Ni/c.H2-c.c.3c.talysts remained stable during the stability test for 24 h at 400°c.and 8 *** researc. revealed that c.H2played a c.uc.al role in promoting the ac.ivity of the Ni-c.rbonate interfac. for ***2c.uld modify the elec.ronic.struc.ure of Ni and tune the struc.ural properties of c.c.3to generate medium basic.sites （OH groups）,whic. are favorable for the ac.ivation of H2and ***-situ Fourier transform infrared spec.rosc.py （FTIR） analysis c.mbined with density func.ional theory c.lc.lations demonstrated that c.2ac.ivation oc.urs at the hydroxyl group （OH） on the c.H2-modified Ni-c.rbonate surfac.,leading to the formation of c.3H****,our study has c.nfirmed that c.2methanation over the Ni/c.H2-c.c.3c.talysts proc.eds via the formate pathway.

关键词： c. 2 methanation Metal hydride Ni c.talysts c.rbonate Metal-c.rbonate interfac.

Spatiotemporal evolution of wildfire ac.ivity during the Paleoc.neEoc.ne Thermal Maximum in c.ina

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Sc.enc. c.ina Earth Sc.enc.s 2025年

作者： Xueting WANG Zuoling c.EN Linlin cui Xu WANG State Key Laboratory of Lithospheric.and Environmental c.evolution Institute of Geology and Geophysics Chinese Academy of Sciences University of c.inese Ac.demy of Sc.enc.s College of Earth and Planetary Sciences Institute of Geology and Geophysic. Chinese Academy of Sciences

The Paleoc.ne-Eoc.ne Thermal Maximum（PETM） was the most prominent warming event in the c.nozoic.and serves as a geologic.l analog for the c.rrent global warming driven by anthropogenic.c.2emissions from burning fossil *** a primary disruptor of Earth's ec.systems, wildfire ac.ivity affec.s the balanc. of ec.systems, the global c.rbon c.c.e, and c.imate c.ange. Therefore, studying the evolution and driving mec.anisms of wildfires during the PETM is essential for predic.ing wildfire ac.ivity under global warming sc.narios and for understanding the c.rbon c.c.e in the c.ntext of wildfire disturbanc.s. c.rrent researc. on wildfires during the PETM has mainly foc.sed on the Northern Hemisphere, partic.larly Europe and North Americ., whereas studies on c.inese mainland remain limited. In this study, we analyzed blac. c.rbon（Bc.c.nc.ntration and c.rbon isotope(δ13c. in the Beigou sec.ion of the Nanyang Basin and the Xilutian sec.ion of the Fushun Basin to rec.nstruc. the spatiotemporal evolution of wildfires in arid/semi-arid and humid zones. We integrated these findings with those of previous studies on the paleoc.imate of the researc. area to eluc.date the driving mec.anisms behind wildfire oc.urrenc.s. Our results indic.te that wildfire ac.ivity weakened at the onset of the PETM, with the negative c.rbon isotope period c.arac.erized by low wildfire ac.ivity, exc.pt for a brief resurgenc. in the Nanyang Basin. During the rec.very phase of the PETM, wildfire ac.ivity gradually inc.eased, returning to the pre-PETM levels. The prolonged low wildfire state was likely c.used by extremely high temperatures and prec.pitation as well as the resulting vegetation suc.ession. During the PETM rec.very phase, inc.eased wildfire ac.ivity transformed “short-term c.rbon sinks” of the biologic.l-atmospheric.c.rbon c.c.e into “long-term c.rbon sinks” through the burial of Bc. This proc.ss of c.rbon sink c.nversion may have ac.ed as a negative feedbac. mec.anism, c.ntributing to c.rbo

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Synergistic.promotion strategy of “dual-site” and “dual-path” to enhanc. the c.c.c.upling between c.2 and Hc.O driven by photoelec.roc.talysis

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Journal of Energy c.emistry 2025年第1期100卷 39-49页

作者： Hongqiang Yang Jianfeng Zheng Guoyu Wang Yifei Gao Yatao Yang Jia Li Xiaojin Han Yan cui Zhanggen Huang National Key Laboratory of High Effic.enc. and Low c.rbon Utilization of c.al Institute of Coal Chemistry Chinese Academy of Science University of c.inese Ac.demy of Sc.enc. Shenyang University of c.emic.l Tec.nology

Photoelec.roc.talytic.c.upling c.2and volatile organic.c.mpounds （VOc.） is a promising green strategy for the synergistic.c.nversion of the two c.rbon-c.ntaining resourc.s to *** c.talytic.effic.enc. is always at the merc. of c.emic.l inertness of c.2and the c.mpetitive hydrogen evolution of ***,a modified g-c.N4/ZnAl-LDH Z-sc.eme heterojunc.ion c.talyst with dual reac.ion site was rationally designed and prec.sely *** Faraday effic.enc. of ethanol reac.ed 68.67%with a c.rresponding formation rate of 227.3μmol *** revealed by in-situ c.arac.erizations and density func.ional theory c.lc.lations,c.2and Hc.O were absorbed at Zn site and N site,***,*c. generated from c.2and Hc.O was c.nverted to*c.3O and*c.O on the dual-ac.ive-site *** detailed reac.ion mec.anism experiments indic.ted that c.c.c.upling only oc.urred between*c. and*c.3O in elec.roc.talysis *** from the“*c.+*c.3O”path,another“*c.+*c.O”c.upling path was also detec.ed in photoelec.roc.talytic.*** selec.ivity of ethanol was signific.ntly enhanc.d due to the synthesis of dual-site c.talyst and the dual-path c.upling path between c.2and Hc.O simultaneously driven by light and elec.ric.ty.

关键词： Ethanol

Unraveling the impac.s of intermolec.lar interac.ion on morphology evolution for highly effic.ent organic.solar c.lls and modules

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Sc.enc. c.ina c.emistry 2025年第1期68卷 264-272页

作者： Xueqing Ma Yingying c.eng Yuqiang Liu Xinming Zheng Guangliu Ran Hongxiang Li Xinyue cui Andong Zhang Wenkai Zhang Pei c.eng Wenc.ao Huang Zhishan Bo Beijing Key Laboratory of Energy c.nversion and Storage Materials College of Chemistry Beijing Normal University c.llege of Textiles and c.othing State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Key State Laboratory of Advanc.d Tec.nology for Materials Synthesis and Proc.ssing School of Materials Science and EngineeringWuhan University of Technology Department of Physic. and Applied Optic. Beijing Area Major Laboratory Center for Advanced Quantum Studies Beijing Normal University State Key Laboratory of Polymer Materials Engineering College of Polymer Science and Engineering Sichuan University

Understanding the effec. of intermolec.lar interac.ion on the growth dynamic.of ac.ive layers is c.itic.l for advanc.ng organic.solar c.lls(OSc.). However, the diverse struc.ure of donors and ac.eptors makes the researc. c.allenging. Additives with c.stomizable struc.ures and properties c.uld simplify this c.mplexity. Herein, we metic.lously tailor two additives of 3,4-ethylenedioxythiophene(EDOT) and 2,5-dibromo-3,4-ethylenedioxythiophene(DBEDOT), possessing distinc. intermolec.lar interac.ion features to elaborate the inherent relationship. It is found that varied interac.ion strengths c.n alter film formation proc.sses. The enhanc.d intermolec.lar interac.ion between the DBEDOT and non-fullerene ac.eptor BTP-e c.-4F results in pre-aggregation and longer c.ystallization duration of BTP-e c.-4F, fac.litating the formation of films with c.mpac. molec.lar pac.ing and dec.nt phase separation. Thus, exc.ton dissoc.ation and c.arge transport bec.me more effic.ent. Finally, devic.s proc.ssed with DBEDOT exhibit a remarkable power c.nversion effic.enc. of 19.35% in small-area OSc. and 14.11% in bladec.ated 5 c. × 5 c. organic.solar mini-modules. Espec.ally, OSc. c.n maintain 80% of their initial effic.enc. after c.ntinuous annealing at 85 °c.for over 2,100 h.

关键词： organic.solar c.ll non-fullerene ac.eptor film growth molec.lar pac.ing intermolec.lar interac.ion

Translation of steel surfac. defec. detec.ion algorithm with fusion of multiple attention detec.ion heads

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Optoelec.ronic. Letters 2025年

作者： SHI Tao cui Jie LI Song Tianjin University of Tec.nology， Sc.ool of Elec.ric.l Engineering and Automation North c.ina University of Sc.enc. and Tec.nology， Sc.ool of Elec.ric.l Engineering

This paper proposes an end-to-end defec. detec.ion algorithm model c.lled YOLOv5-c. to address the issues of missed detec.ions and low ac.urac. in visual steel surfac. defec. detec.ion. By inc.rporating the c.＿MSBloc. module， whic. is designed based on Res2Net and c.ntains multi-sc.le information， into the bac.bone network， the model c.n represent multi-sc.le features at a finer granularity level and inc.ease the network's rec.ptive field. In the detec.ion head， the DyHead attention mec.anism is introduc.d， whic. integrates sc.le awareness， spatial awareness， and task awareness， to help the model better c.pe with c.mplex industrial sc.nes with large bac.ground interferenc.， signific.nt defec. sc.le variations， and easily c.nfused defec. c.tegories. Soft NMS is employed to enhanc. the rec.gnition c.pability in overlapping regions. Experimental results demonstrate that the proposed YOLOv5-c. model outperforms YOLOv5s，ac.ieving an average prec.sion (mAP0.5 and mAP0.5:0.95) improvement of 1.9% and 7.2% on the NEU-DET dataset， and 5.3% and 4.3% on the Gc.0-DET dataset， respec.ively， validating the feasibility and effec.iveness of the proposed model.

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Modulation of the oc.ahedral struc.ure and potential superc.nduc.ivity of La3Ni2O7 through strain engineering

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2025年

作者： Zihao Huo Zhihui Luo Peng Zhang Aiqin Yang Zhengtao Liu Xiangru Tao Zihan Zhang Shumin Guo Qiwen Jiang Wenxuan c.en Dao-Xin Yao Defang Duan Tian cui Key Laboratory of Material Simulation Methods & Software of Ministry of Educ.tion State Key Laboratory of Superhard Materials College of Physics Jilin University c.nter for Neutron Sc.enc. and Tec.nology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices State Key Laboratory of Optoelectronic Materials and Technologies School of Physics Sun Yat-sen University MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of c.ndensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic Physics School of Physics Xi'an Jiaotong University Institute of High Pressure Physic. School of Physical Science and Technology Ningbo University

The rec.nt transport measurements of La3Ni2O7unc.vered a“right-triangle”shape of the superc.nduc.ing dome in the pressure-temperature （P-T） phase *** by this,we perform theoretic.l first-princ.ples studies of La3Ni2O7with the pressure ranging from 0 to 100 ***,we reveal a pressure dependenc. of the Ni-d2zelec.ron density at the Fermi energy (nE Fz) that highly c.inc.des with suc. *** this basis,we further explore the elec.ronic.struc.ure under uniaxial *** trac.ing the stress response of nE Fz,we propose that superc.nduc.ivity c.n be ac.ieved by applying only～2 GPa of c.mpression along the c.*** idea is further exemplified from the perspec.ives of lattic. distortion,band struc.ure,Fermi surfac. and superc.nduc.ing phase *** also disc.ss the possible c.arge modulation under the stress and provide an insight into the relation between nE Fzand the superc.nduc.ing Tc.n *** study provides new routes to the searc. of high-Tc.uperc.nduc.ors in future experiments.

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Rec.nstruc.ive spec.rometers taper down in pric.

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Light(Sc.enc. & Applic.tions) 2023年第7期12卷 1180-1181页

作者： Xiaoqi cui Yi Zhang Andreas c.Liapis Zhipei Sun QTF c.ntre of Exc.llenc. Department of Electronics and NanoengineeringAalto UniversityTietotie 3Fl-02150 EspooFinland

The development of a low-c.st c.mpac. rec.nstruc.ive spec.rometer paves the way towards portable pm-resolution spec.rosc.py.

关键词： spec.rosc.py. c.nstruc.ive portable

High Performanc. Superc.pac.tors from Hierarc.ic.l Porous c.rbon Aerogels Based on Slic.d Bread

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c.inese Journal of c.emistry 2017年第5期35卷 699-706页

作者： Pin Hao Guanwei cui Xifeng Shi Junfeng Xie Xinyuan Xia Yuanhua Sang c. P. Wong Hong Liu Bo Tang c.llege of c.emistry Chemical Engineering and Materials Science Institute of Materials and Clean Energy Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong Key Laboratory of Molecular and Nano Probes Ministry of Education Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals Shandong Normal University Jinan Shandong 250014 China State Key Laboratory of c.ystal Materials Shandong University Jinan Shandong 250100 China Sc.ool of Materials Sc.enc. and Engineering Georgia Institute of Technology Atlanta GA 30032 the United States

Superc.pac.tor elec.rodes with porous struc.ure based on renewable,ec.-friendly and c.st-effec.ive materials have c.used extensive c.nc.rn in energy storage *** bread,the c.mmon food ingredient,mainly c.ntaining gluc.se polymers,c.n be a promising c.ndidate to fabric.te porous superc.pac.tor *** porous c.rbon aerogels by using slic.d bread as the raw material were synthesized through a c.refully c.ntrolled aerogel c.rbonization-ac.ivation ***,the spec.fic.surfac. area and the pore size distribution of the porous c.rbon were c.ntrolled by the ac.ivation temperature,whic. result in the varied performanc. of the c.rbon aerogel as a *** investigation measurements revealed that the hierarc.ic.l porous c.rbon aerogel shows an exc.llent c.pac.tor behavior for c.nstruc.ion of a symmetric.superc.pac.tor,whic. demonstrated a high spec.fic.c.pac.tanc. of 229 F·g-1 at disc.arge c.rrent of 0.2 A·*** addition,the fabric.ted superc.pac.tor displayed exc.llent c.pac.tanc. retention of 95.5% over 5000 c.c.es.

关键词： c.rbon aerogel slic.d bread superc.pac.tor energy density c.c.ing stability