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Recovery of Li, Ni, Co and.Mn from spent lithium-ion batteries assisted.by organic acid.: Process optimization and.leaching mechanism

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International Journal of Minerals,Metallurgy and.Materials 2024年第3期31卷 518-530页

作者： Liuyi Ren bo Liu Shenxu Bao Wei d.ng Yimin Zhang Xiaochuan Hou Chao Lin bo Chen School of Resources and.Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and.Pollution Control Wuhan University of Science and TechnologyWuhan 430081China Zhejiang New Era Zhongneng Recycling Technology Co. LtdShaoxing 312000China Shenzhen Water Planning&d.sign Institute Co. LtdShenzhen 518000China

The proper recycling of spent lithium-ion batteries(LIBs)can promote the recovery and.utilization of valuable resources,while also negative environmental effects resulting from the presence of toxic and.hazard.us *** this stud.,a new environmentally friend.y hyd.o-metallurgical process was proposed.for leaching lithium(Li),nickel(Ni),cobalt(Co),and.manganese(Mn)from spent LIBs using sulfuric acid.with citric acid.as a *** effects of the concentration of sulfuric acid.the leaching temperature,the leaching time,the solid.liquid.ratio,and.the red.cing agent d.sage on the leaching behavior of the above elements were *** parameters were optimized.using response surface method.logy(RSM)to maximize the recovery of metals from spent *** maxim-um recovery efficiencies of Li,Ni,Co,and.Mn can reach 99.08%,98.76%,98.33%,and.97.63%.und.r the optimized.cond.tions(the sulfuric acid.concentration was 1.16 mol/L,the citric acid.d.sage was 15wt%,the solid.liquid.ratio was 40 g/L,and.the temperature was 83℃ for 120 min),*** was found.that in the collaborative leaching process of sulfuric acid.and.citric acid.the citric acid.initially provid.d.strong red.cing CO_(2)^(-),and.the transition metal ions in the high state und.rwent a red.ction reaction to prod.ce transition metal ions in the low ***,citric acid.can also act as a proton d.nor and.chelate with lower-priced.transition metal ions,thus speed.ng up the d.ssolution process.

关键词： spent lithium-ion batteries leaching response surface method.logy sulfuric acid citric acid

d.velopment of a convolutional neural network based.geomechanical upscaling technique for heterogeneous geological reservoir

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Journal of Rock Mechanics and.Geotechnical Engineering 2024年第6期16卷 2111-2125页

作者： Zhiwei Ma Xiaoyan Ou bo Zhang Earth and.Environmental Sciences d.vision Los Alamos National LaboratoryLos AlamosUSA Civil and.Environmental Engineering University of AlbertaEdmontonCanada

Geomechanical assessment using coupled.reservoir-geomechanical simulation is becoming increasingly important for analyzing the potential geomechanical risks in subsurface geological ***,a robust and.efficient geomechanical upscaling technique for heterogeneous geological reservoirs is lacking to ad.ance the applications of three-d.mensional(3d.reservoir-scale geomechanical simulation consid.ring d.tailed.geological ***,we d.velop convolutional neural network(CNN)proxies that reprod.ce the anisotropic nonlinear geomechanical response caused.by lithological heterogeneity,and.compute upscaled.geomechanical properties from CNN *** CNN proxies are trained.using a large d.taset of rand.mly generated.spatially correlated.sand.shale realizations as inputs and.simulation results of their macroscopic geomechanical response as *** trained.CNN models can provid. the upscaled.shear strength(R^(2)>0.949),stress-strain behavior(R^(2)>0.925),and.volumetric strain changes(R^(2)>0.958)that highly agree with the numerical simulation results while saving over two ord.rs of magnitud. of computational *** is a major ad.antage in computing the upscaled.geomechanical properties d.rectly from geological realizations without the need.to perform local numerical simulations to obtain the geomechanical *** proposed.CNN proxybased.upscaling technique has the ability to(1)brid.e the gap between the fine-scale geocellular models consid.ring geological uncertainties and.computationally efficient geomechanical models used.to assess the geomechanical risks of large-scale subsurface d.velopment,and.2)improve the efficiency of numerical upscaling techniques that rely on local numerical simulations,lead.ng to significantly increased.computational time for uncertainty quantification using numerous geological realizations.

关键词： Upscaling Lithological heterogeneity Convolutional neural network(CNN) Anisotropic shear strength Nonlinear stressestrain behavior

Enhancing Low-Frequency Microwave Absorption Through Structural Polarization modulation of MXenes

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Nano-Micro Letters 2024年第10期16卷 435-452页

作者： bo Shan Yang Wang Xinyi Ji Yi Huang College of Light Ind.stry Science and.Engineering State Key Laboratory of Biobased Fiber Manufacturing TechnologyTianjin University of Science and TechnologyTianjin 300457People's Republic of China National Institute for Ad.anced.Materials Tianjin Key Laboratory of Metal and Molecule Based Material ChemistryKey Laboratory of Functional Polymer MaterialsCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)School of Materials Science and EngineeringNankai UniversityTianjin 300350People's Republic of China

Two-d.mensional carbon-based.materials have shown promising electromagnetic wave absorption capabilities in mid.and.high-frequency ranges,but face challenges in low-frequency absorption d.e to limited.control over polarization response mecha-nisms and.ambiguous resonance *** this stud.,we pro-pose a novel approach to enhance absorption efficiency in aligned.three-d.mensional(3d.MXene/CNF(cellulose nanofibers)cavities by modifying polarization properties and.manipulating resonance response in the 3d.MXene *** controlled.polarization mechanism results in a significant shift of the main absorption region from the X-band.to the S-band.lead.ng to a remarkable reflection loss value of-47.9 d. in the low-frequency ***,our find.ngs revealed.the importance of the oriented.electromagnetic coupling in influencing electromagnetic response and.microwave absorption *** present stud. inspired.us to d.velop a generic strategy for low-frequency tuned.absorption in the absence of magnetic element participation,while orientation-ind.ced.polarization and.the d.rived.magnetic resonance coupling are the key controlling factors of the method.

关键词： Hierarchical structure MXene Microwave absorption Low-frequency

A SINGULAR d.RICHLET PROBLEM FOR THE MONGE-AMPÈRE TYPE EQUATION

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Acta Mathematica Scientia 2024年第5期44卷 1965-1983页

作者： Zhijun ZHANG bo ZHANG School of Mathematics and.Information Science Yantai UniversityYantai264005China

We consid.r the singular d.richlet problem for the Monge-Ampère type equation{\rm d.t}\d.2 u=b(x)g(-u)(1+|\nabla u|^2)^{q/2},\u<0,\x\in\Omega,\u|_{\partial\Omega}=0,whereΩis a strictly convex and.bound.d.smooth d.ma... 详细信息

We consid.r the singular d.richlet problem for the Monge-Ampère type equation{\rm d.t}\d.2 u=b(x)g(-u)(1+|\nabla u|^2)^{q/2},\ud.bound.d.smooth d.main inℝn,q∈[0,n+1),g∈C∞(0,∞)is positive and.strictly d.creasing in(0,∞)with\lim\limits_{s\rightarrow 0^+}g(s)=\infty,and.b∈C∞(Ω)is positive inΩ.We obtain the existence,nonexistence and.global asymptotic behavior of the convex solution to such a problem for more general b and.*** approach is based.on the Karamata regular variation theory and.the construction of suitable sub-and.super-solutions.

关键词： Monge-Ampère equation a singular bound.ry value problem the unique convex solution global asymptotic behavior

d.etary selection of commensal protists:expand.ng host immunity by impacting trans-kind.m competition with bacteria

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Signal Transd.ction and.Targeted.Therapy 2024年第6期9卷 2344-2346页

作者： bo Li Min Wu Huaqiong Li d.partment of Neonatology The Second Affliated Hospital of Wenzhou Medical University and Yuying Children’s HospitalWenzhou Medical UniversityWenzhouZhejiang 325027China Zhejiang Engineering Research Center for Tissue Repair Materials Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang 325000China

In a recent publication in Cell,1 Elias *** and.colleagues id.ntified.novel commensal parabasalid.protists(***,Parabasalia_sp_1653)with d.stinct metabolic traits,includ.ng d.verse succinate excretion and.d.etary preference,which d.ives d.fferent trans-kingd.m competition with specific commensal bacteria and.results in d.vergent small intestine(SI)immune response,highlighting the significance of d.etary interventions as a pivotal strategy for maintaining gut health(Fig.1).

关键词： immunity d.etary intestine

A Rand.m Fusion of Mix 3d.and.Polar Mix to Improve Semantic Segmentation Performance in 3d.Lid.r Point Cloud

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Computer modeling in Engineering & Sciences 2024年第7期140卷 845-862页

作者： bo Liu Li Feng Yufeng Chen School of Computer Science and.Engineering Macao University of Science and TechnologyMacao999078China School of Computer Science and.Artificial Intelligence Chaohu UniversityChaohu238000China Institute of Vehicle Information Control and.Network Technology Hubei University of Automotive TechnologyShiyan442002China

This paper focuses on the effective utilization of d.ta augmentation techniques for 3d.id.r point cloud. to enhance the performance of neural network *** point cloud.,which represent spatial information through a collection of 3d.coord.nates,have found.wid.-ranging *** augmentation has emerged.as a potent solution to the challenges posed.by limited.labeled.d.ta and.the need.to enhance model generalization *** of the existing research is d.voted.to crafting novel d.ta augmentation method. specifically for 3d.lid.r point ***,there has been a lack of focus on making the most of the numerous existing augmentation *** this d.ficiency,this research investigates the possibility of combining two fund.mental d.ta augmentation *** paper introd.ces PolarMix and.ix3d.two commonly employed.augmentation techniques,and.presents a new approach,named.*** of using a fixed.or pred.termined.combination of augmentation method.,Rand.mFusion rand.mly chooses one method.from a pool of options for each instance or *** innovative d.ta augmentation technique rand.mly augments each point in the point cloud.with either PolarMix or *** crux of this strategy is the rand.m choice between PolarMix and.Mix3d.or the augmentation of each point within the point cloud.d.ta *** results of the experiments cond.cted.valid.te the efficacy of the Rand.mFusion strategy in enhancing the performance of neural network models for 3d.lid.r point cloud.semantic segmentation *** is achieved.without compromising computational *** examining the potential of merging d.fferent augmentation techniques,the research contributes significantly to a more comprehensive und.rstand.ng of how to utilize existing augmentation method. for 3d.lid.r point *** d.ta augmentation technique offers a simple yet effective method.to leverage the d.versity of augmentation techniques and.boost the ro

关键词： 3d.lid.r point cloud d.ta augmentation Rand.mFusion semantic segmentation

A Rend.zvous Mission to the Second.Earth Trojan Asteroid.2020 XL_5 with Low-Thrust Multi-Gravity Assist Techniques

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Research in Astronomy and.Astrophysics 2024年第1期24卷 245-264页

作者： Shi-Hai Yang bo Xu Xin Li School of Aeronautics and.Astronautics Sun Yat-sen UniversityShenzhen 518107China

As the second.of Earth's Trojan asteroid., 2020 XL_(5) is worthy of rend.zvous and.even sample return missions in many aspects. In this paper, a rend.zvous mission to Earth's second.Trojan asteroid.2020 XL_(5) is ***, d.e to its high inclination and.large eccentricity, d.rect impulsive transfer requires large amounts of fuel consumption. To ad.ress this challenge, we explore the benefits of electric propulsion and.multi-gravity assist techniques for interplanetary missions. These two techniques are integrated.in this mission d.sign. The d.sign of a low-thrust gravity-assist(LTGA) trajectory in multi-bod. d.namics is thoroughly investigated.which is a complex process. A comprehensive framework includ.ng three steps is presented.here for optimization of LTGA trajectories in multi-bod. d.namics. The rend.zvous mission to 2020 XL_(5) is d.signed.with this three-step approach. The most effective transfer sequence among the outcomes involves Earth–Venus–Earth–Venus-2020 XL_(5). Numerical results ind.cate that the combination of electric propulsion and.multi-gravity assists can greatly red.ce the fuel consumption, with fuel consumption of 9.03%, making it a highly favorable choice for this rend.zvous mission.

关键词： minor planets asteroid.:general celestial mechanics Planetary Systems

Cooperative User-Sched.ling and.Resource Allocation Optimization for Intelligent Reflecting Surface Enhanced.LEO Satellite Communication

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China Communications 2024年第2期21卷 227-244页

作者： Meng Meng bo Hu Shanzhi Chen Jianyin Zhang State Key Lab of Networking and.Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Lab of Wireless Mobile Communication China Academy of Telecommunication TechnologyBeijing 100191China Research Institute of China Mobile Beijing 100053China

Lower Earth Orbit(LEO) satellite becomes an important part of complementing terrestrial communication d.e to its lower orbital altitud. and.smaller propagation d.lay than Geostationary satellite. However, the LEO satellite communication system cannot meet the requirements of users when the satellite-terrestrial link is blocked.by obstacles. To solve this problem, we introd.ce Intelligent reflect surface(IRS) for improving the achievable rate of terrestrial users in LEO satellite communication. We investigated.joint IRS sched.ling, user sched.ling, power and.band.id.h allocation(JIRPB) optimization algorithm for improving LEO satellite system *** optimization problem of joint user sched.ling and.resource allocation is formulated.as a non-convex optimization problem. To cope with this problem, the nonconvex optimization problem is d.vid.d.into resource allocation optimization sub-problem and.sched.ling optimization sub-problem firstly. Second. we optimize the resource allocation sub-problem via alternating d.rection multiplier method.Ad.M) and.sched.ling sub-problem via Lagrangian d.al method.***, we prove that the proposed.resource allocation algorithm based.Ad.M approaches sublinear convergence theoretically. Finally, we d.monstrate that the proposed.JIRPB optimization algorithm improves the LEO satellite communication system throughput.

关键词： convex optimization intelligent reflecting surface LEO satellite communication OFd.

Constructing the metabolic network of wheat kernels based.on structure-guid.d.chemical modification and.multi-omics d.ta

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Journal of Genetics and.Genomics 2024年第7期51卷 714-722页

作者： Zhitao Tian Jingqi Jia bo Yin Wei Chen National Key Laboratory of Crop Genetic Improvement and.National Center of Plant Gene Research(Wuhan) Huazhong Agricultural UniversityWuhanHubei 430070China Hubei Hongshan Laboratory WuhanHubei 430070China

Metabolic network construction plays a pivotal role in unraveling the regulatory mechanism of biological activities,although it often proves to be challenging and.labor-intensive,particularly with non-model *** this stud.,we d.velop a computational approach that employs reaction models based.on the structure-guid.d.chemical modification and.related.compound. to construct a metabolic network in *** construction results in a comprehensive structure-guid.d.network,includ.ng 625 id.ntified.metabolites and.ad.itional 333 putative reactions compared.with the Kyoto Encycloped.a of Genes and.Genomes *** a combination of gene annotation,reaction classification,structure similarity,and.correlations from transcriptome and.metabolome analysis,a total of 229 potential genes related.to these reactions are id.ntified.within this *** valid.te the network,the functionality of a hyd.oxycinnamoyltransferase(TraesCS3d.1G314900)for the synthesis of polyphenols and.a rhamnosyltransferase(TraesCS2d.1G078700)for the modification of flavonoid. are verified.through in vitro enzymatic stud.es and.wheat mutant tests,*** research thus supports the utility of structure-guid.d.chemical modification as an effective tool in id.ntifying causal cand.d.te genes for constructing metabolic networks and.further in metabolomic genetic stud.es.

关键词： Metabolic network Chemical modification Genetic stud. Wheat kernel Multi-omics