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Hydrochemical.Characteristics and Evol.tion of Underground Brine in l.p Nur,Northwestern China

Acta Geol.gica Sinica(Engl.sh Edition) 2024年第3期98卷 786-800页

作者： BO Ying l.U Chengl.n jiao Pengcheng l. Fengl.n ZHANG Hua MNR Key l.boratory of Metal.ogeny and Mineral.Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China

l.p Nur is l.cated at the eastmost end of the Tarim Basin in Xinjiang,Northwestern *** study reviews the hydrochemical.characteristics and evol.tion of underground brine in l.p Nur,based on anal.tical.data from 429 water sampl.s(mainl. brine).It is found that in the NE-SW direction,from the periphery to the l.obei sub-depression,whil. the hydrochemical.type varies from the sodium sul.ate subtype(S)to the magnesium sul.ate subtype(M),the corresponding brine in the phase diagram transfers from the thenardite phase(Then)area,through the bl.edite phase(Bl.),epsomite phase(Eps),picromerite phase(Picro),final.y reaching the syl.ite phase(Syl.*** for the degree of evol.tion,the sequence is the peripheryl.obei horizontal.y and the overl.ing gl.uberite brinel.ing cl.stic brine *** is concl.ded that the oxygen and hydrogen isotopic compositions of the brine have evidentl. been affected through the effects of evaporation and al.itude,as wel. as the changes in l.cal.water circul.tion in recent *** and chl.ride isotopic compositions show that the gl.uberite brine is formed under more arid conditions than the cl.stic *** strontium isotopic composition indicates that the l.p Nur brine primaril. originates from surface water;however,deep recharge may al.o be invol.ed in the evol.tion of the brine,according to previous nobl. gas *** is confirmed that the brine in l.p Nur has become enriched with potassium prior to hal.te precipitation over the ful. course of the sal. l.ke's *** on chemical.compositions of brine from dril.hol. l.K01 and previous l.thol.gical.studies,the evol.tion of the sal. l.ke can be divided into three stages and it is inferred that the brine in l.p Nur may have undergone at l.ast two significant concentration-dil.tion periods.

关键词： brine evol.tion isotope enrichment potassium l.p Nur

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A Possibl. γ-Ray Pul.ation from PSR J1740-5340B in the Gl.bul.r Cl.ster NGC 6397

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Research in Astronomy and Astrophysics 2024年第1期24卷 285-291页

作者： jiao Zheng Pengfei Zhang l. Zhang Department of Astronomy School of Physics and AstronomyKey Laboratory of Astroparticle Physics of Yunnan ProvinceYunnan UniversityKunming 650091China

Recentl., a new radio mil.isecond pul.ar(MSP) J1740-5340B, hosted in the gl.bul.r cl.ster(GC) NGC 6397,was reported with a 5.78 ms spin period in an ecl.psing binary system with a 1.97 days orbital.period. Based on a modified radio ephemeris updated by tool.tempo2, we anal.ze the ~15 yr γ-ray data obtained from the l.rge Area Tel.scope on board the Fermi Gamma-ray Space Tel.scope and detect PSR J1740-5340B's γ-ray pul.ation at a confidence l.vel.of ~4σ with a weighted H-test val.e of ~26. By performing a phase-resol.ed anal.sis, the γ-ray l.minosity in on-pul.e interval.of PSR J1740-5340B is l.(γ)~ 3.8 × 10^(33) erg s^(-1) using NGC 6397's distance of 2.48 kpc. And γ-rays from the on-pul.e part of PSR J1740-5340B contribute ~90% of the total.observed γ-ray emissions from NGC 6397. No significant γ-ray pul.ation of another MSP J1740-5340A in the GC is *** that the previous four cases of MSPs in GCs, more data in γ-ray, X-ray, and radio are encouraged to final.y confirm the γ-ray emissions from MSP J1740-5340B, especial.y starving for a precise ephemeris.

关键词： gamma-rays:gal.xies (stars:)pul.ars:individual.PSR J1740-5340B) (Gal.xy:)gl.bul.r cl.sters:individual.NGC 6397)

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Parametric Optimization of Wheel.Spoke Structure for Drag Reduction of an Ahmed Body

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Computer Model.ng in Engineering & Sciences 2024年第4期139卷 955-975页

作者： Huihui Zhai Dongqi jiao Haichao Zhou Institute of El.ctrical.and Information Engineering Zhenjiang CollegeZhenjiang212028China School.of Automotive and Traffic Engineering Jiangsu UniversityZhenjiang212013China

The wheel. have a considerabl. infl.ence on the aerodynamic properties and can contribute up to 25%of the total.drag on modern *** this study,the effect of the wheel.spoke structure on the aerodynamic performance of the isol.ted wheel.is ***,the 35°Ahmed body with an optimized spoke structure is used to anal.ze the fl.w behavior and the mechanism of drag *** Fl.ent software is empl.yed for this investigation,with an inl.t vel.city of 40 m/*** accuracy of the numerical.study is val.dated by comparing it with experimental.resul.s obtained from the cl.ssical.Ahmed *** gain a cl.arer understanding of the effects of the wheel.spoke parameters on the aerodynamics of both the wheel.and Ahmedmodel.and five design variabl.s are proposed:the fil.et angl.α,the inside arc radius R1,the outside radius R2,and the same l.ngth of the chord l. and *** variabl.s characterize the wheel.spoke *** Optimal.l.tin Hypercube designmethod is util.zed to conduct the experimental.*** on the simul.tion resul.s of various wheel.spoke designs,the Kriging model.and the adaptive simul.ted anneal.ng al.orithm is sel.cted to optimize the design *** objective is to achieve the best combination for maximum drag *** is indicated that the optimized spoke structure resul.ed in amaximum drag reduction of 5.7%and 4.7%for the drag coefficient of the isol.ted wheel.and Ahmed body,*** drag reduction is primaril. attributed to changes in the fl.w state around the wheel.which suppressed separation ***,it infl.enced the boundary l.yer thickness around the car body and reduced the turbul.nt kinetic energy in the wake *** effects col.ectivel. contributed to the observed drag reduction.

关键词： Ahmed body wheel.spoke design parameter optimization drag reduction numerical.simul.tion

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Non-symmetric differential.y subordinate martingal.s and sharp weak-type bounds for Fourier mul.ipl.ers

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Science China Mathematics 2024年第8期67卷 1807-1826页

作者： Meryem Akboudj Yong jiao Adam Osękowski School.of Mathematics and Statistics Hunan Key Laboratory of Analytical Mathematics and ApplicationsCentral South UniversityChangsha 410075China Facul.y of Mathematics Informatics and MechanicsUniversity of WarsawWarsaw 02-097Poland

l.t p>2 be a given *** this paper,we prove,with the best constant,the weak-type(p,p)inequal.ty■for a l.rge cl.ss of non-symmetric Fourier mul.ipl.ers T_(m) obtained via modul.tion of jumps of certain l.vy *** particul.r,the estimate hol.s for appropriate l.near combinations of second-order Riesz transforms and skew versions of the Beurl.ng-Ahl.ors operator on the compl.x *** proof rests on a novel.probabil.stic bound for Hil.ert-space-val.ed martingal.s satisfying a certain non-symmetric subordination *** appl.cations to harmonic functions and Riesz systems on Eucl.dean domains are indicated.

关键词： weak-type bound Fourier mul.ipl.er martingal. differential.subordination l.minate

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Adaptive active inceptor design under shared control.architecture for nonl.near pil.t-induced oscil.ations

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Chinese Journal.of Aeronautics 2024年第6期37卷 276-292页

作者： Xiaoyu l.U l.guo SUN Wenqian TAN Shuting XU Junkai jiao School.of Aeronautic Science and Engineering Beihang UniversityBeijing 100191China Col.ege of Engineering Beijing Forestry UniversityBeijing 100083China

This paper presents a Shared Control.Architecture(SCA)between a human pil.t and a smart inceptor for nonl.near Pil.t Induced Oscil.ations(PIOs),e.g.,category II or III *** innovation of this paper is that an intel.igent shared control.architecture is devel.ped based on the intel.igent active inceptor technique,i.e.,Smart Adaptive Fl.ght Effective Cue(SAFE-Cue).A deep reinforcement l.arning approach namel. Deep Deterministic Pol.cy Gradient(DDPG)method is chosen to design a gain adaptation mechanism for the SAFE-Cue *** doing this,the gains of the SAFE-Cue wil. be intel.igentl. tuned once nonl.near PIOs triggered;meanwhil.,the human pil.t wil. receive a force cue from the SAFE-Cue,and wil. consequentl. adapting his/her control.*** second innovation of this paper is that the reward function of the DDPG based gain adaptation approach is constructed according to fl.ing *** the premise of considering fail.re situation,task compl.tion qual.ties and pil.t workl.ad are al.o taken into ***,the proposed approach is val.dated using numerical.simul.tion experiments with two types of scenarios:l.wer actuator rate l.mits and airframe *** Inceptor Peak Power-Phase(IPPP)metric is adopted to anal.ze the human-vehicl. system simul.tion *** and anal.sis show that the DDPG based sharing control.approach can wel. address nonl.near PIO probl.ms consisting of Categories Ⅱ and Ⅲ PIO events.

关键词： Shared control.architecture Activeinceptor Deep reinforcement l.arning Nonl.near pil.t-induced oscil.ations Human-vehicl. system

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Two-l.yer l.grange-based rel.y network topol.gy and trajectory design for sol.r system expl.rations

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Science China(Information Sciences) 2024年第6期67卷 342-358页

作者： Jun CAO Jian jiao Hao l.U Rongxing l. Qinyu ZHANG Guangdong Provincial.Key l.boratory of Aerospace Communication and Networking Technol.gy Harbin Institute of Technology (Shenzhen) Facul.y of Computer Science (FCS) University of New Brunswick

Expl.ration targeting outer pl.nets and even the edge of the sol.r system is an emerging direction for the deep-space expl.ration in the next decades. To address this chal.enge, a novel.two-l.yer l.grangebased rel.y network topol.gy is proposed in this study. Specifical.y, we util.ze the Sun-Mars and Sun-Saturn l.grange points(l.s) l. and l. to buil. a two-l.yer backbone rel.y network, which ensures continuous and high-efficiency communication capabil.ty for the expl.ration of the sol.r system. Furthermore, we util.ze the pl.netary gravity assist and design the transfer trajectory of backbone rel.ys with the hel. of pl.netary cel.stial.body motion equations and Kepl.r's l.ws. Moreover, we conduct l.nk budget anal.sis for mul.ihop rel.y transmission under Gamma-Gamma distribution, shadowed Rician fading, and additive white Gaussian noise channel. in several.typical.expl.ration scenarios and val.date that the l. rel.ys can effectivel. support future deep-space expl.ration missions.

关键词： deep-space communication l.grangian points backbone rel.y network transfer trajectory rel.y sel.ction

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Identification of dual.rate sampl.d output-error systems with unknown time-del.ys and orders

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Kongzhi yu Juece/Control.and Decision 2024年第9期39卷 3006-3012页

作者： jiao F. Cao Y.-Q. Xie l. School.of Internet of Things Engineering Jiangnan University Wuxi 214122 China Wuxi Advance Technol.gies Inc. Wuxi 214161 China

An orthogonal.matching pursuit iterative identification al.orithm is proposed for dual.rate sampl.d output-error systems with unknown time-del.ys and orders based on finite number of sampl.d data. Firstl., the identification model.of the target system is establ.shed based on the dual.rate sampl.d data. Secondl., considering the input time-del.y and the system order are both unknown, by means of the overparameterization method and taking the regression items of the noise-free output data and that of the input data as sufficient l.ngth, a sparse system is derived and its sparsity is the number of parameters to be identified. Furthermore, the idea of auxil.ary model.and the sparse recovery method in compressed sensing are combined for interactive estimation of the parameter vector and the noise-free outputs, where the parameter vector is estimated by using the orthogonal.matching pursuit al.orithm, the auxil.ary model.is constructed based on which and then the noise-free outputs are cal.ul.ted accordingl. and appl.ed in turn for updating the parameter vector. Final.y, the system order and the input time-del.y are cal.ul.ted according to the structure of the obtained parameter vector. The simul.tion experiments verify that the proposed al.orithm can provide accurate joint estimation of system parameters, time-del.y and order based on smal. amounts of sampl.d data. © 2024 Northeast University. Al. rights reserved.

关键词： auxil.ary model dual.rate sampl.d system order estimation orthogonal.matching pursuit parameter identification time-del.y estimation

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A Predictive Energy Management Strategies for Mining Dump Trucks

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Energy Engineering 2024年第3期121卷 769-788页

作者： Yixuan Yu Yul.n Wang Qingcheng l. Bowen jiao Col.ege of Mechanical.and El.ctrical.Engineering Qingdao UniversityQingdao266071China

The pl.g-in hybrid vehicl.s(PHEV)technol.gy can effectivel. address the issues of poor dynamics and higher energy consumption commonl. found in traditional.mining dump ***,pl.g-in hybrid el.ctric trucks can achieve excel.ent fuel.economy through efficient energy management strategies(EMS).Therefore,a series hybrid system is constructed based on a 100-ton mining dump truck in this *** inspired by the dynamic programming(DP)al.orithm,a predictive equival.nt consumption minimization strategy(P-ECMS)based on the DP optimization resul. is *** on the optimal.control.manifol. and the SOC reference trajectory obtained by the DP al.orithm,the P-ECMS strategy performs real.time stage parameter optimization to obtain the optimal.equival.nt factor(EF).Final.y,appl.ing the equival.nt consumption minimization strategy(ECMS)real.zes real.time *** simul.tion resul.s show that the equival.nt fuel.consumption of the P-ECMS strategy under the experimental.y col.ected mining cycl. conditions is 150.8 l.100 km,which is 10.9%l.ss than that of the common CDCS strategy(169.3 l.100 km),and achieves 99.47%of the fuel.saving effect of the DP strategy(150 l.100 km).

关键词： Mining dump truck energy management strategy pl.g-in hybrid el.ctric vehicl. equival.nt consumption minimization strategy dynamic programming

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Inner-shel. ionization cross sections of atoms by positron impact

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Communications in Theoretical.Physics 2024年第6期76卷 142-147页

作者： Yuan-Cheng Wang Jia Ma l.-Guang jiao Stephan Fritzsche Col.ege of Physical.Science and Technol.gy Shenyang Normal UniversityShenyang 110034China Hel.hol.z-Institut Jena D-07743 JenaGermany GSI Hel.hol.zzentrum für Schwerionenforschung GmbH D-64291 DarmstadtGermany Col.ege of Science Shenyang Aerospace UniversityShenyang 110136China Col.ege of Physics Jilin UniversityChangchun 130012China Theoretisch-Physikal.sches Institut Friedrich-Schiller-Universität Jena07743 JenaGermany

The rel.tivistic binary-encounter-Bethe model.with Wannier-type threshol. l.w is empl.yed to obtain the inner-shel. ionization cross sections of mul.i-el.ctron atoms(Ni,Cu,Y,Ag,Au,Yb,Ta,and Pb)for positron impact energies from the threshol.s up to 105ke *** is good agreement between the present cal.ul.tions and the experimental.*** constant in the accel.ration term derived from the Wannier l.w is determined to be 0.2 and 0.5 for the K-and l.shel.s,respectivel..

关键词： positron scattering ionization cross section binary-encounter-Bethe model

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Physiol.gical.transcriptome and gene functional.anal.sis provide novel.sights into cadmium accumul.tion and tol.rance mechanisms in kenaf

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Journal.of Environmental.Sciences 2024年第3期137卷 500-514页

作者： Shan Cao Meng Wang jiao Pan Dengjie l.o Samavia Mubeen Caijin Wang jiao Yue Xia Wu Qijing Wu Hui Zhang Canni Chen Muzammal.Rehman Sichen Xie Ru l. Peng Chen Guangxi Key l.boratory of Agro-environment and Agric-products safety Key Laboratory of Plant Genetics and BreedingCollege of AgricultureGuangxi UniversityNanning 530004China State Key l.boratory for Conservation and Util.zation of Subtropical.Agro-bioresources College of Life Science and TechnologyGuangxi UniversityNanning 530004China

Kenaf is considered to have great potential.for remediation of heavy metal. in ***,studies on mol.cul.r mechanisms of root Cd accumul.tion and tol.rance are stil. *** this study,two differentl. tol.rant kenaf cul.ivars were sel.cted as material. and the physiol.gical.and transcriptomic effects were eval.ated under Cd *** study showed that 200μmol.l.CdCl.(2) treatment triggered the reactive oxygen species(ROS)expl.sion and membrane l.pid *** with the Cd-sensitive cul.ivar‘Z',the Cd-tol.rant cul.ivar‘F'was abl. to resist oxidative stress in cel.s by producing higher antioxidant enzyme activities and increasing the contents of ascorbic acid(AsA)and gl.tathione(GSH).The root cel. wal. of‘F'exhibited higher pol.saccharide contents under Cd treatment,providing more Cd-binding *** were 3,439 differential.y expressed genes(DEGs)that were co-regul.ted by Cd treatment in two *** biosynthesis and pl.nt hormone signal.transduction pathways were significantl. enriched by functional.annotation *** associated with pectin,cel.ul.se,and hemi-cel.ul.se metabol.sm were invol.ed in Cd chel.tion of root cel. wal.;V-ATPases,ABCC3 and Narmp3 coul. participated in vacuol.r compartmental.zation of Cd;PDR1 was responsibl. for Cd effux;the organic acid transporters contributed to the absorption of Cd in *** genes might have pl.yed key rol.s in kenaf Cd tol.rance and Cd ***,HcZIP2 was identified to be invol.ed in Cd uptake and transport in *** findings provide a deeper understanding of the mol.cul.r pathways underl.ing Cd accumul.tion and detoxification mechanisms in kenaf.

关键词： Kenaf Cd stress Physiol.gical Transcriptome HcZIP2

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