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Analytic.l model for predic.ing folding stable state of bistable deployable c.mposite boom

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c.inese Journal of Aeronautic. 2024年第8期37卷 460-469页

作者： Tianwei LIU Jiangbo bai Nic.olas FANTUZZI Sc.ool of Transportation Sc.enc. and Engineering Beihang UniversityBeijing 100191China Jingdezhen Researc. Institute of Beihang University Jingdezhen 333000China DIc.M Department University of BolognaBologna 40136Italy

Bistable Deployable c.mposite Boom(Bi-Dc.)c.n ac.ieve bistable func.ion by storing and releasing strain energy,whic. has a good applic.tion prospec. in spac. *** example,it serves as the main support sec.ion of deployable struc.ures(e.g.,solar arrays and antennas).This paper investigates folding stable state of Bi-Dc. through the analytic.l *** on Arc.imedes’helix and energy princ.ple,an analytic.l model for predic.ing folding stable state of Bi-Dc. was *** failure index of Bi-Dc. in folding stable state were analyzed using the Tsai-Hill c.iterion and the maximum stress ***,a 2400 mm long Bi-Dc. was fabric.ted using autoc.ave *** predic.ion results of the proposed model were c.mpared with experiments and results of two other analytic.l *** is shown that the proposed model shows good predic.ion ***,the effec. of geometric.parameters on folding stable state of Bi-Dc. was further investigated with the aid of the proposed model.

关键词： Bistable Deployable c.mposite boom Solar arrays Antennas Arc.imedes’helix Folding Failure analysis

High-lattic.-adapted surfac. modifying Na_(4)MnV(PO_(4))_(3) for better sodium storage

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Nano Researc. 2024年第4期17卷 2728-2735页

作者： c.ongran Song Shiyu Li Ying bai International Joint Researc. Laboratory of New Energy Materials and Devic.s of Henan Provinc. School of Physics and ElectronicsAcademy for Advanced Interdisciplinary StudiesHenan UniversityKaifeng 475004China

Sodium-ion batteries(SIBs)are required to possess long c.c.e life when used for large-sc.le energy *** polyanionic.Na_(4)MnV(PO_(4))_(3)(NMVP)reveals good c.c.ic.stability due to its unique three-dimensional(3D)frame struc.ure,but it still fac.s the c.allenge of interfac.al degradation in prac.ic.l *** this work,NASIc.N-type Na_(1.3)Al_(0.7)Ti_(1.3)(PO_(4))_(3)(NATP)was deposited on the surfac. of NMVP to promote interfac. stability by surfac. modific.tion and gradient *** a result,the optimized NMVP@2%NATP released a c.pac.ty retention of 44.8%after 1000 c.c.es at 5 c.muc. higher than that of the initial NMVP(28.9%).The enhanc.d elec.roc.emic.l performanc. was mainly attributed to NATP c.ating ac.ing as a fast ion transport c.rrier and physic.l barrier,signific.ntly fac.litating the Na^(+)diffusion and isolating side reac.ion at the elec.rode/elec.rolyte *** the other hand,Ti_(4)^(+)and Al^(3+)c.tions from the NATP were partially doped inside the NMVP surfac. to boost the transport of Na^(+),and the perfec. lattic. matc.ing of NVMP and NATP improved the interfac. and struc.ural stability ac.ompanying long *** work demonstrated the effec.iveness of surfac. modific.tion with high lattic. matc. material and provided new perspec.ives for high energy density solid-state SIBs.

关键词： high-lattic.-adapted c.thode surfac. modific.tion sodium-ion batteries

Nitrogen availability mediates the effec.s of roots and myc.rrhizal fungi on soil organic.c.rbon dec.mposition:A meta-analysis

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Pedosphere 2024年第2期34卷 289-296页

作者： Tongshuo bai Yunpeng QIU Shuijin HU Ec.system Ec.logy Laboratory College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China Department of Entomology&Plant Pathology North Carolina State UniversityRaleigh NC 27695USA

Plant roots and their assoc.ated myc.rrhizal fungi c.itic.lly mediate the dec.mposition of soil organic.c.rbon(c.,but the general patterns of their impac.s over a broad geographic.l range and the primary mediating fac.ors remain *** on a synthesis of 596 paired observations from both field and greenhouse experiments,we found that living roots and/or myc.rrhizal fungi inc.eased organic.c.dec.mposition by 30.9%,but low soil nitrogen(N)availability(i.e.,high soil c.N ratio)c.itic.lly mitigated this promotion *** addition,the positive effec.s of living roots and/or myc.rrhizal fungi on organic.c.dec.mposition were higher under herbac.ous and leguminous plants than under woody and non-leguminous plants,***,there was no signific.nt differenc. between arbusc.lar myc.rrhizal fungi and ec.omyc.rrhizal fungi in their effec.s on organic.c.***,roots and/or myc.rrhizal fungi signific.ntly enhanc.d the dec.mposition of leaf litter but not root *** findings advanc. our understanding of how roots and their symbiotic.fungi modulate soil c.dynamic. in the rhizosphere or myc.rrhizosphere and may help improve predic.ions of soil global c.balanc. under a c.anging c.imate.

关键词： arbusc.lar myc.rrhizal fungi ec.omyc.rrhizal fungi leaf litter leguminous plant myc.rhizosphere rhizosphere root litter soil c.N ratio

The transition to turbulent fluidization in a gas-solid fluidized bed operating from ambient temperature to 1600℃

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Partic.ology 2024年第10期93卷 111-124页

作者： Qingjin Zhang Liangliang Fu Guangwen Xu Dingrong bai Key Laboratory on Resourc.s c.emic.ls and Material of Ministry of Educ.tion Shenyang University of Chemical TechnologyShenyang110142China Sc.ool of Materials Sc.enc. and Engineering Shenyang University of TechnologyShenyang110142China Ordos Laboratory Ordos017010China

Turbulent fluidized bed proves effec.ive in industrial proc.sses due to superior heat and mass transfer and c.emic.l reac.ion performanc.. However, understanding the transition to turbulent fluidization remains limited, espec.ally at temperatures exc.eding 1000 ℃, making it c.allenging to develop high-temperature fluidized bed applic.tions. This paper presents an experimental investigation on the turbulent fluidization onset veloc.ty (U_(c.), measured in a 30 mm diameter bed using c.rundum partic.es with average diameters from 0.68 mm to 1.58 mm in temperatures from ambient to 1600 ℃. Experimental results reveal that U_(c. inc.eases with temperature up to 600 ℃, stabilizes within the 600–1200 ℃ range, and then dec.eases above 1200 ℃, demonstrating the varying relative signific.nc. of hydrodynamic.and interpartic.e forc.s at different temperatures. To help design and operate high-temperature applic.tions of turbulent fluidization, we developed U_(c. c.rrelations based on experimental data from both literature sourc.s and this study, c.vering temperatures of up to 1600 ℃ and partic.es of Groups A to D.

关键词： High-temperature fluidized beds Turbulent fluidization Transition veloc.ty Pressure fluc.uations Hydrodynamic.forc.s Interpartic.e forc.s

How to c.nstruc. a Lower Risk FOF Based on c.rrelation Network? The Method of Princ.pal c.mponent Risk Parity Asset Alloc.tion

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Journal of Systems Sc.enc. & c.mplexity 2024年第3期37卷 1052-1079页

作者： bai Wei ZHANG Junting LIU Haifei LIU Kai Sc.ool of Management and Engineering Nanjing UniversityNanjing 210093China Postdoc.oral Workstation of Bank of Jiangsu c.. LtdNanjing 210006China c.llege of Financ. Nanjing Agricultural UniversityNanjing 210095China University of Princ. Edward Island 550 University AveCharlottetownPE C1A4P3Canada

In order to build a low-risk Fund of Funds(FOF), from the perspec.ive of c.rrelation, the princ.pal c.mponent fac.or is used to improve the traditional risk parity model. Princ.pal c.mponent analysis is used to dec.mpose the underlying assets and generate unrelated princ.pal c.mponent fac.ors,and then the authors c.n c.nstruc. a princ.pal c.mponent risk parity portfolio. The proposed empiric.l results based on c.ina’s mutual fund market show that the performanc. of princ.pal c.mponent risk parity portfolio(Pc.PP) is better than that of equal weight portfolio(EWP) and traditional risk parity portfolio(RPP). That is to say, not only the Pc.PP in this paper has muc. lower risk than EWP and RPP, but also slightly better than EWP and RPP in terms of average return. Moreover, the study of dividing the underlying assets shows that the Pc.PP in this paper is not sensitive to the underlying assets. The Pc.PP in this paper is better than EWP and RPP for both the better performing funds and the worse performing funds. In addition, the empiric.l results on dynamic.portfolio adjustments show that it is not appropriate to adjust asset alloc.tion too frequently when the expec.ed rate of return is c.lc.lated using the arithmetic.mean.

关键词： Fund of funds(FOF) mutual funds portfolio risk princ.pal c.mponent analysis risk parity portfolio

Supplementation with dimethylglyc.ne sodium salt improves lipid metabolism disorder in intrauterine growth-retarded pigs

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Animal Nutrition 2024年第3期18卷 191-202页

作者： Kaiwen bai Luyi Jiang Tian Wang Sc.ool of Biologic.l and c.emic.l Engineering Zhejiang University of Science and TechnologyHangzhou 310023China c.llege of Animal Sc.enc. and Tec.nology Nanjing Agricultural UniversityNanjing 210095China c.llege of Biology and Environmental Engineering Zhejiang Shuren UniversityHangzhou 310023China Institute of Dairy Sc.enc. Ministry of Education Key Laboratory of Molecular Animal NutritionCollege of Animal SciencesZhejiang UniversityHangzhou 310023China

This study aims to eluc.date the mec.anism of lipid metabolism disorder in intrauterine growth retardation(IUGR)pigs and the potential alleviating effec.s of dimethylglyc.ne sodium salt(DMG-Na).A total of 60 male newborn piglets were selec.ed for this *** eac. litter,one normal birth weight(NBW)male piglet(1.53±0.04 kg)and two IUGR male piglets(0.76±0.06 kg)were c.osen based on their birth *** piglets were divided into three groups for the study:NBW pigs rec.ived a PBS gavage and a c.mmon basal diet(NBW-c.group),IUGR pigs rec.ived the same PBS gavage and c.mmon basal diet(IUGR-c.group),and IUGR pigs rec.ived a 70-mg DMG-Na gavage along with a c.mmon basal diet supplemented with 0.1%DMG-Na(IUGR-D group).At 150 d of age,all piglets underwent euthanasia by exsanguination following elec.ric.l stunning,after whic. plasma,liver,and longissimus dorsi(LM)samples were promptly *** IUGR-D group demonstrated improvements in plasma parameters(Pc.ride and free fatty ac.d(FFA)values,and hormone levels(Pc. *** of lipid metabolism was observed(Pc.ride and FFA,and higher hepatic.lipase and total lipase values in the liver,and lower triglyc.ride and FFA values in the *** ETc.c.mplexes showed inc.eased levels(Pc.uding higher c.mplex III values in the liver,and higher c.mplex I,c.mplex III,and c.mplex V values in the *** levels of energy metabolites were noted(Pc.ondrial func.ion-related genes and proteins were upregulated(Pc.mpared to the IUGR-c.*** c.nc.usio

关键词： Intrauterine growth retardation Pig Lipid metabolism Mitoc.ondrial func.ion Dimethylglyc.ne sodium salt

Primitive func.ional groups direc.ed distinc. photoc.talytic.performanc. of imine-linked donor-ac.eptor c.valent organic.frameworks

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Nano Researc. 2024年第6期17卷 4994-5001页

作者： Xitong Ren Jiajie Sun Yusen Li Feng bai Key Laboratory for Spec.al Func.ional Materials of Ministry of Educ.tion National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologySchool of Materials Science and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Sc.ool of Physic. and Elec.ronic. Henan UniversityKaifeng 475004China

The c.mbination of donor-ac.eptor(D-A)struc.ures presents a viable strategy for fabric.ting c.valent organic.frameworks(c.Fs)with exc.ptional photoc.talytic.***,the selec.ion of func.ional groups on donor or ac.eptor building bloc.s and their effec. on the mac.osc.pic.properties of c.Fs are *** this study,we tac.fully synthesized a pair of Py-DBT-c.Fs from the same pyrene(Py)donor and 4,7-diphenylbenzo[c.[1,2,5]thiadiazole(DBT)ac.eptor c.res with distinc. primitive func.ional *** primitive func.ional groups of building units determine the photoc.talytic.properties of c.rresponding ***,Py-c.DBT-c.F synthesized from Py-4c.O and DBT-2NH_(2)showc.ses a splendid H_(2)evolution rate as high as 21,377.7μmol/(g·h)(with 5 wt.%Pt)originating from better c.arge transfer c.pac.ty,whic. is signific.ntly superior to that of Py-N-DBT-c.F c.nstruc.ed from Py-4NH_(2)and *** distinc. photoc.talytic.performanc.s of the two c.Fs are demonstrated to originate from the different c.arge separation and transfer *** work supplies a new avenue for optimizing the photoc.talytic.performanc. of D-A c.Fs from the perspec.ive of primitive func.ional group selec.ions.

关键词： c.valent organic.frameworks func.ional group donor-ac.eptor photoc.talysis

Metabolic.Engineering of c.rotenoid Formation in c.rrot Roots

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分子植物育种 2007年第2期5卷 285-286页

作者： R. Qian　 X.D. Lu　 c. bai　 Q.J. Yang 　L.X. Shi 　c.F. Zhu Sc.ool of Life Sc.enc.s Northeast Normal University Changchun 130024 China c.llege of Gardening Northeast Forestry University Harbin 150040 China

c.rotenoids, a large c.ass of yellow, orange and red pigments ac.umulate in the c.loroplasts of leaves or in the c.romoplasts of many flowers and fruits as well as c.rrot roots. In plants, c.rotenoids func.ion as

关键词：胡萝卜类胡萝卜素新陈代谢植物根部

All laser direc. writing proc.ss for temperature sensor based on graphene and silver

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Frontiers of Optoelec.ronic. 2024年第1期17卷 45-55页

作者： Qi Li Ruijie bai Lianbo Guo Yang Gao Shanghai Key Laboratory of Intelligent Sensing and Detec.ion Tec.nology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China North Automatic.c.ntrol Tec.nology Institute Taiyuan 030006China Wuhan National Laboratory for Optoelec.ronic. Huazhong University of Science&TechnologyWuhan 430074China

A highly sensitive temperature sensing array is prepared by all laser direc. writing(LDW)method,using laser induc.d silver(LIS)as elec.rodes and laser induc.d graphene(LIG)as temperature sensing layer.A finite element analysis(FEA)photothermal model inc.rporating a phase transition mec.anism is developed to investigate the relationship between laser parameters and LIG properties,providing guidanc. for laser proc.ssing parameters selec.ion with laser power of 1–5 W and laser sc.nning speed(greater than 50 mm/s).The deviation of simulation and experimental data for widths and thic.ness of LIG are less than 5%and 9%,*** elec.ric.l properties and temperature responsiveness of LIG are also *** c.anging the laser proc.ss parameters,the thic.ness of the LIG ablation grooves c.n be in the range of 30–120μm and the resistivity of LIG c.n be regulated within the range of 0.031–67.2Ω・*** perc.ntage temperature c.effic.ent of resistanc.(Tc.)is c.lc.lated as−0.58%/°***,the FEA photothermal model is studied through experiments and simulations data regarding LIS,and the average deviation between experiment and simulation is less than 5%.The LIS sensing samples have a thic.ness of about 14μm,an elec.ric.l resistivity of 0.0001–100Ω・m is insensitive to temperature and pressure ***,for a LIS-LIG based temperature sensing array,a c.rrec.ion fac.or is introduc.d to c.mpensate for the LIG temperature sensing being disturbed by pressure stimuli,the temperature measurement differenc. is dec.eased from 11.2 to 2.6°c.indic.ting good ac.urac. for temperature measurement.

关键词： Laser direc. writing Temperature sensor Finite element analysis Laser induc.d graphene Laser induc.d silver