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Multi-layer-structured bioactive glass nanopowder for multistage-stimulated hemostasis and wound repair

Bioactive Materials 2023年第7期25卷 319-332页

作者： Yidan Wang meng luo Ting Li Chenxi Xie Sihua Li bo Lei Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an710054China Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research College of StomatologyXi’an Jiaotong UniversityXi’an710054China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710054China Instrument Analysis Center Xi’an Jiaotong UniversityXi’an710054China

Current treatments for full-thickness skin injuries are still unsatisfactory due to the lack of hierarchically stimulated dressings that can integrate the rapid hemostasis,inflammation regulation,and skin tissue remodeling into the one system instead of single-stage *** this work,a multilayer-structured bioactive glass nanopowder(BGN@PTE)is developed by coating the poly-tannic acid andε-polylysine onto the BGN via facile layer-by-layer assembly as an integrative and multilevel dressing for the sequential management of *** comparison to BGN and poly-tannic acid coated BGN,BGN@PTE exhibited the better hemostatic performance because of its multiple dependent approaches to induce the platelet adhesion/activation,red blood cells(RBCs)aggregation and fibrin network ***,the bioactive ions from BGN facilitate the regulation of the inflammatory response while the poly-tannic acid and antibacterialε-polylysine prevent the wound infection,promoting the wound healing during the inflammatory *** addition,BGN@PTE can serve as a reactive oxygen species scavenger,alleviate the oxidation stress in wound injury,induce the cell migration and angiogenesis,and promote the proliferation stage of wound ***,BGN@PTE demonstrated the significantly higher wound repair capacity than the commercial bioglass dressing Dermlin™.This multifunctional BGN@PTE is a potentially valuable dressing for full-thickness wound management and may be expected to extend to the other wounds therapy.

关键词： Bioactive materials Bioceramics Bioactive glass nanoparticles Wound repair

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Injectable self-healing ceria-based nanocomposite hydrogel with ROS-scavenging activity for skin wound repair

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Regenerative Biomaterials 2022年第1期9卷 13-21页

作者： Xueyun Gong meng luo Min Wang Wen Niu Yidan Wang bo Lei School of Medicine Henan Polytechnic UniversityJiaozuo 454000China Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an 710054China

Excessive reactive oxygen species(ROS)in the injured skin may impede the wound repair and skin ***,we develop an injectable self-healing ceria-based nanocomposite hydrogel with ROS-scavenging activity to accelerate wound *** nanocomposite hydrogels were successfully prepared by coating cerium oxide nanorods with polyethylenimine and crosslinked with benzaldehyde-terminated F127(F127-CHO)through the dynamic Schiff-base reaction(FVEC hydrogel).The results showed that the FVEC hydrogel possessed the good thermosensitivity,injectability,self-healing ability and ROS scavenging *** subcutaneous implantation experiments in mice confirmed that FVEC hydrogels are biocompatible and biodegradable in *** fullthickness skin wound studies showed that FVEC hydrogel could significantly enhance the wound healing and epithelium regeneration with the formation of hair follicle and adipocyte *** work provides a new strategy for the development of multifunctional Cebased nanocomposite hydrogel for full-thickness skin wound healing and regeneration.

关键词： bioactive materials multifunctional scaffolds rare earth dressing wound healing

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Three-dimensional numerical study of supercritical pressure effect on heat transfer of cryogenic methane

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航空动力学报 2011年第7期26卷 1480-1487页

作者： RUAN bo meng Hua School of Aeronautics and Astronautics Zhejiang University Hangzhou 310027 China)

A three-dimensional numerical study of the turbulent convective heat transfer of the cryogenic methane flowing inside a square engine cooling channel under supercritical pressures was systematically *** results indicate that increasing the fluid pressure results in enhanced heat transfer of the cryogenic methane under supercritical *** the pseudo-critical temperature under a corresponding supercritical pressure,drastic property variations cause heat transfer deterioration and sharp wall temperature increase at a high wall heat flux of 7MW/m2.A modified Jackson and Hall heat transfer equation,which can be used for supercritical heat transfer calculations of the cryogenic methane,has been successfully established in this paper.

关键词： supercritical heat transfer supercritical pressure regenerative cooling cryogenic methane numerical study

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Surface modifications of layered LiNi_(x)Mn_(y)Co_(z)O_(2)cathodes via atomic and molecular layer deposition

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Rare Metals 2023年第7期42卷 2121-2156页

作者： Xin Wang Xiang-bo meng Department of Mechanical Engineering University of ArkansasFayettevilleAR72701USA

Currently,there has an ever-growing interest in layered LiNi_(x)Mn_(y)Co_(z)O_(2)(NMCs,x+y+z=1)cathode materials for lithium-ion batteries(LIBs)and lithium metal batteries(LMBs),due to their low cost and high ***,they still suffer from a series of issues,such as Li/Ni cation mixing,irreversible phase transition,and transition metal *** issues result in severe capacity degradation and limited cyclability of ***,atomic and molecular layer deposition(ALD and MLD)have emerged as a novel tool to tackle these issues,featuring their unique capabilities to fine-tailor NMCs'surfaces for stable interfaces and improved electrochemical performance in LIBs and *** this review,we specially summarize the recent advances of different ALD and MLD coatings on NMCs and discuss their working *** expect that this review will stimulate more efforts to further develop better NMCs using novel ALD/MLD coatings.

关键词： Lithium-ion batteries(LIBs) Lithium metal batteries(LMBs) NMC cathodes Atomic layer deposition(ALD) Molecular layer deposition(MLD) Surface coating

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The Theory of Finite Models without Equal Sign

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Acta Mathematica Sinica,English Series 2006年第3期22卷 865-872页

作者： Li bo luo Department of Mathematics Science Guizhou College for Minorities Department of Mathematics Beijing Normal University

In this paper, it is the first time ever to suggest that we study the model theory of all finite structures and to put the equal sign in the same situtation as the other relations. Using formulas of infinite lengths we obtain new theorems for the preservation of model extensions, submodels, model homomorphisms and inverse homomorphisms. These kinds of theorems were discussed in Chang and Keisler＇s Model Theory, systematically for general models, but Gurevich obtained some different theorems in this direction for finite models. In our paper the old theorems manage to survive in the finite model theory. There are some differences between into homomorphisms and onto homomorphisms in preservation theorems too. We also study reduced models and minimum models. The characterization sentence of a model is given, which derives a general result for any theory T to be equivalent to a set of existential-universal sentences. Some results about completeness and model completeness are also given.

关键词： Finite models Equal sign Preservation theorems

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Moments of inertia of triaxial nuclei in covariant density functional theory

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Nuclear Science and Techniques 2024年第10期35卷 197-207页

作者： Yu-meng Wang Qi-bo Chen Department of Physics East China Normal UniversityShanghai 200241China

The covariant density functional theory(CDFT)and five-dimensional collective Hamiltonian(5DCH)are used to analyze the experimental deformation parameters and moments of inertia(MoIs)of 12 triaxial nuclei as extracted by Allmond and Wood[*** and ***,***.B 767,226(2017)].We find that the CDFT MoIs are generally smaller than the experimental values but exhibit qualitative consistency with the irrotational flow and experimental data for the relative MoIs,indicating that the intermediate axis exhibites the largest ***,it is found that the pairing interaction collapse could result in nuclei behaving as a rigid-body flow,as exhibited in the^(186-192)Os ***,by incorporating enhanced CDFT MoIs(factor of f≈1.55)into the 5DCH,the experimental low-lying energy spectra and deformation parameters are reproduced *** with both CDFT and the triaxial rotor model,the 5DCH demonstrates superior agreement with the experimental deformation parameters and low-lying energy spectra,respectively,emphasizing the importance of considering shape fluctuations.

关键词： Moment of inertia Trixial nucleus Covariant density functional theory Five-dimensional collective Hamiltonian Low-lying energy spectrum

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Interpretable machine learning analysis and automated modeling to simulate fluid-particle flows

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Particuology 2023年第9期80卷 42-52页

作者： bo Ouyang Litao Zhu Zhenghong luo Department of Chemical Engineering School of Chemistry and Chemical EngineeringState Key Laboratory of Metal Matrix CompositesShanghai Jiao TongUniversityShanghai200240China

The present study extracts human-understandable insights from machine learning(ML)-based mesoscale closure in fluid-particle flows via several novel data-driven analysis approaches,i.e.,maximal information coefficient(MIC),interpretable ML,and automated *** is previously shown that the solidvolume fraction has the greatest effect on the drag *** present study aims to quantitativelyinvestigate the influence of flow properties on mesoscale drag correction(H_(d)).The MIC results showstrong correlations between the features(i.e.,slip velocity(u^(*)_(sy))and particle volume fraction(εs))and thelabel H_(d).The interpretable ML analysis confirms this conclusion,and quantifies the contribution of u^(*)_(sy),εs and gas pressure gradient to the model as 71.9%,27.2%and 0.9%,*** ML without theneed to select the model structure and hyperparameters is used for modeling,improving the predictionaccuracy over our previous model(Zhu et al.,2020;Ouyang,Zhu,Su,&luo,2021).

关键词： Filtered two-fluid model Fluid-particle flow Mesoscale closure Interpretable machine learning Automated machine learning Maximal information coefficient

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Mean-Square Output Consensus of Heterogeneous Multi-Agent Systems with Multiplicative Noises in Dynamics and Measurements

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Journal of Systems Science & Complexity 2023年第6期36卷 2364-2381页

作者： LIN bo luo Shixian JIANG Yan Guangxi Key Laboratory of Disaster Prevention and Engineering Safety Guangxi UniversityNanning530004China School of Electrical Engineering Guangxi UniversityNanning530004China

This paper studies the output consensus problem of heterogeneous linear stochastic multiagent systems with multiplicative noises in system parameters and measurements,where the system noise in each agent is allowed to be *** employing stochastic output regulation theory and the stochastic Lyapunov function approach,a composite controller embedded with stochastic output regulator equations(SOREs)and a stochastic dynamic compensator is designed to achieve the meansquare output consensus of the multi-agent *** implement the consensus algorithm,a sufficient condition for feasible solutions of the SOREs is first established in terms of Lyapunov and Selvester *** the time-varying SOREs are approximated by the Euler-Maruyama method combined with an a-posteriori partial estimation of the increments of the Brownian motion.A numerical example illustrates the theoretical results.

关键词： Heterogeneous multi-agent systems multiplicative noise output consensus stochastic output regulation

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Reactive transport modeling constraints on the complex genesis of a lacustrine dolomite reservoir:A case from the Eocene Qaidam Basin,China

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Petroleum Science 2024年第4期21卷 2240-2256页

作者： Ying Xiong bo Liu Xiu-Cheng Tan Zheng-meng Hou Jia-Shun luo Ya-Chen Xie Kai-bo Shi Kun-Yu Wu School of Earth and Space Sciences Peking UniversityBeijing100871China Institute of Oil and Gas Peking UniversityBeijing100871China China National Petroleum Corporation Key Laboratory of Carbonate Reservoirs Southwest Petroleum UniversityChengdu610500SichuanChina Institute of Subsurface Energy Systems Clausthal University of TechnologyClausthal-ZellerfeldNiedersachsen38678Germany Research Institute of Exploration and Development PetroChina Qinghai Oil Field CompanyDunhuang736202GansuChina

Reactive transport modeling(RTM)is an emerging method used to address geological issues in diagenesis ***,the extrapolation of RTM results to practical reservoir prediction is not sufficiently *** paper presents a case study of the Eocene Qaidam Basin that combines RTM results with petrological and mineralogical *** results show that the Eocene Xiaganchaigou Formation is characterized by mixed siliciclastic-carbonate-evaporite sedimentation in a semiclosed saline lacustrine *** evaporation and salinization processes during the syngeneticpenecontemporaneous stage gave rise to the replacive genesis of dolomites and the cyclic enrichment of dolomite in the middle-upper parts of the meter-scale depositional *** successive change in mineral paragenesis from terrigenous clastics to carbonates to evaporites was reconstructed using RTM *** uncertainty analyses further suggest that the evaporation intensity(brine salinity)and particle size of sediments(reactive surface area)were important rate-determining factors in the dolomitization,as shown by the relatively higher reaction rates under conditions of higher brine salinity and fine-grained *** the simulation results with measured mineralogical and reservoir physical property data indicates that the preservation of original intergranular pores and the generation of porosity via replacive dolomitization were the major formation mechanisms of the distinctive lacustrine dolomite reservoirs(widespread submicron intercrystalline micropores)in the Eocene Qaidam *** results confirm that RTM can be effectively used in geological studies,can provide a better general understanding of the dolomitizing fluid-rock interactions,and can shed light on the spatiotemporal evolution of mineralogy and porosity during dolomitization and the formation of lacustrine dolomite reservoirs.

关键词： Reactive transport modeling Lacustrine dolomite Mineralogy and porosity evolution Reservoir genesis

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Second-Order Phase Transition in the Two-Dimensional Classical Lattice Coulomb Gas of Half-Integer Charges

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Chinese Physics Letters 2001年第7期18卷 947-949页

作者： luo meng-bo CHEN Qing-Hu XU Zhu-An JIAO Zheng-Kuan Department of Physics Zhejiang UniversityHangzhou 310027

The second-order phase transition in the two-dimensional(2D)classical Coulomb gas of half-integer charges on a square lattice is investigated by using Monte Carlo *** on the finite-size scaling analysis,we estimate the second-order phase transition temperature Tc and the static critical exponentsβand v with a new numerical analysis *** precise critical temperature Tc=0.1311(2)and critical exponentsβ/v=0.1152(12)and v=0.857(15)are *** estimated value of v indicates that the charge lattice melting transition is different from the pure 2D Ising transition.

关键词： transition. method. critical

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