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Flexible and Robust Func.ionalized Boron Nitride/Poly(p‑Phenylene Benzobisoxazole)Nanocomposite Paper with High Thermal conduc.ivity and Outstanding Electrical insulation

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Nano-Micro Letters 2024年第2期16卷 423-437页

作者： Lin tang Kunpeng Ruan Xi Liu Yusheng tang Yali Zhang Junwei Gu chongqing Key Laboratory of Green Synthesis and Applications College of ChemistryChongqing Normal UniversityChongqing 401331People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China

With the rapid development of 5G information technology,thermal conduc.ivity/dissipation problems of highly integrated electronic devices and electrical equipment are becoming *** this work,“high-temperature solid-phase&diazonium salt decomposition”method is carried out to prepare benzidine-func.ionalized boron nitride(m-BN).Subsequently,m-BN/poly(pphenylene benzobisoxazole)nanofiber(PNF)nanocomposite paper with nacremimetic layered structures is prepared via sol–gel film transformation *** obtained m-BN/PNF nanocomposite paper with 50 wt%m-BN presents excellent thermal conduc.ivity,incredible electrical insulation,outstanding mechanical properties and thermal stability,due to the construc.ion of extensive hydrogen bonds andπ–πinterac.ions between m-BN and PNF,and stable nacre-mimetic layered ***λ∥andλ_(⊥)are 9.68 and 0.84 W m^(-1)K^(-1),and the volume resistivity and breakdown strength are as high as 2.3×10^(15)Ωcm and 324.2 kV mm^(-1),***,it also presents extremely high tensile strength of 193.6 MPa and thermal decomposition temperature of 640°c,showing a broad application prospect in high-end thermal management fields such as electronic devices and electrical equipment.

关键词： Poly(p-phenylene-2,6-benzobisoxazole)nanofiber Boron nitride Thermal conduc.ivity Electrical insulation

NccMF: Non-collaborative continuousMonitoring Framework for container-Based cloud Runtime Status

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computers, Materials and continua 2024年第1期81卷 1687-1701页

作者： Zheng T. tang W. chen X. Shen c. School of cyber Science and Engineering Sichuan University Chengdu 610065 China intelligent Policing and National Security Risk Management Laboratory Luzhou 646000 China Key Laboratory of Data Protec.ion and intelligent Management (Sichuan University) Ministry of Education Chengdu 610065 China cyber Science Research institute Sichuan University Chengdu 610065 China

The security performance of cloud services is a key factor influencing users' selec.ion of cloud Service Providers (cSPs). continuous monitoring of the security status of cloud services is c.itical. However, existing research lacks a prac.ical framework for such ongoing monitoring. To address this gap, this paper proposes the first Non- collaborative container-Based cloud Service Operation State continuous Monitoring Framework (NccMF), based on relevant standards. NccMF operates without the cSP's collaboration by: 1) establishing a scalable supervisory index system through the identification of security responsibilities for each role, and 2) designing a continuous Metrics Supervision Protocol (cMA) to automate the negotiation of supervisory metrics. The framework also outlines the supervision process for cloud services across different deployment models. Experimental results demonstrate that NccMF effec.ively monitors the operational state of two real-world ioT (internet of Things) cloud services, with an average supervision error of less than 15%. © 2024 The Authors. Published by Tech Science Press.

关键词： container-based cloud continuous monitor non-collaborative runtime status

Supported Recyclable Metal-free Frustrated Lewis Pair catalyst for catalytic Hydrogenation of Substituted Pyridines to Piperidines

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chemical Research in c.inese Universities 2024年第4期40卷 682-689页

作者： MA Shaohua tang Zhiyong cAS Key Laboratory for Nanosystem and Hierarc.ical Fabrication CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190P.R.China University of c.inese Academy of Sciences Beijing100049P.R.China

The construc.ion of heterogeneous frustrated Lewis pairs(FLPs)catalysts is crucial for realizing highly efficient and recyclable pyridines catalytic *** this work,we prepared a recyclable heterogenous FLPs catalyst cMP-BF with conjugated microporous polymer cMP-ethynyl as the support via self-catalyzed 1,1-carboboration reac.ion with commercial Lewis acid B(c_(6)F_(5))_(3).The as-synthesized cMP-BF demonstrates superior heterogenous catalytic hydrogenation performance(conversion>99%),and considerable stability(84%conversion after three cycles)in recyclable hydrogenation of 2,*** work provides insights into the fabrication and catalytic application of recyclable heterogenous FLP catalysts.

关键词： Pyridine hydrogenation Frustrated Lewis pair conjugated microporous polymer

Process metallurgy and data-driven predic.ion and feedback of blast furnace heat indicators

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international Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1228-1240页

作者： Quan Shi Jue tang Mansheng chu School of Metallurgy Northeastern UniversityShenyang 110819China institute for Frontier Technologies of Low-carbon Steelmaking Northeastern UniversityShenyang 110819China Engineering Research center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819China

The predic.ion and control of furnace heat indicators are of great importance for improving the heat levels and conditions of the complex and difficult-to-operate hour-class delay blast furnace(BF)*** this work,a predic.ion and feedback model of furnace heat indicators based on the fusion of data-driven and BF ironmaking processes was *** data on raw and fuel materials,process op-eration,smelting state,and slag and iron discharge during the whole BF process comprised 171 variables with 9223 groups of data and were comprehensively analyzed.A novel method for the delay analysis of furnace heat indicators was *** extracted delay variables were found to play an important role in *** method that combined the genetic algorithm and stac.ing efficiently im-proved performance compared with the traditional mac.ine learning algorithm in improving the hit ratio of the furnace heat predic.ion *** hit ratio for predic.ing the temperature of hot metal in the error range of±10℃ was 92.4%,and that for the chemical heat of hot metal in the error range of±0.1wt%was 93.3%.On the basis of the furnace heat predic.ion model and expert experience,a feedback model of furnace heat operation was established to obtain quantitative operation suggestions for stabilizing BF heat *** sugges-tions were highly accepted by BF ***,the comprehensive and dynamic model proposed in this work was successfully ap-plied in a prac.ical BF *** improved the BF temperature level remarkably,increasing the furnace temperature stability rate from 54.9%to 84.9%.This improvement ac.ieved considerable economic benefits.

关键词： blast furnace furnace heat genetic algorithm stac.ing predic.ion and feedback

Homological Transfer between Additive categories and Higher Differential Additive categories

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Acta Mathematica Sinica,English Series 2024年第5期40卷 1325-1344页

作者： Xi tang Zhao Yong HUANG School of Science Guilin University of Aerospace TechnologyGuilin 541004P.R.China Department of Mathematics Nanjing UniversityNanjing 210093P.R.China

Given an additive category c and an integer n≥*** higher differential additive category consists of objects X in c equipped with an endomorphism ϵ_(X)satisfying ϵ_(X)^(n).Let R be a,finite-dimensional basic algebra over an algebraically closed field and T the augmenting functor from the category of finitely generated left R-modules to that of finitely generated left R/(t^(n))-*** is proved that a finitely generated left R-module M isτ-rigid(respec.ively,(support)τ-tilting,almost completeτ-tilting)if and only if so is T(M)as a left R[t]/(t^(n))-***,R isτm-selfinjec.ive if and only if so is R[t]/(t^(n)).

关键词： Higher differential objects Wakamatsu tilting subcategories G_(ω)-projec.ive modules sup-portτ-tilting modules τ_(m)-selfinjec.ive algebras precluster tilting subcategories

Diet and physical ac.ivity influence the composition of gut microbiota,benefit on Alzheimer's disease

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Food Science and Human Wellness 2024年第2期13卷 541-555页

作者： Jinyue Zhou Min tang Wanyi Li Rui Fang chunlan tang Qinwen Wang 无 School of Public Health Health Science CenterNingbo UniversityNingbo 315211China Department of Neurology Ningbo Rehabilitation HospitalNingbo 3151000China Ningbo institute of Life and Health industry University of Chinese Academy of SciencesNingbo 315100China Key Laboratory of Diagnosis and Treatment of Digestive System Tumors of Zhejiang Province Ningbo 315100China

Alzheimer's disease is a neurodegenerative disease with complex *** microbiota influences the gutbrain axis,which may affect pathways related to the pathogenesis of Alzheimer's ***,diet and physical ac.ivity are likely to affect the pathology of Alzheimer's disease as well as the gut *** demonstrates that it may be possible to prevent or halt the progression of Alzheimer's disease by regulating the gut microbiota using diet and physical ac.ivity ***,the present study reviews the association between these two interventions and gut microbiota in the human *** also summarizes how these two interventions benefit Alzheimer's ***,the primary limitations of these two interventions are discussed and promising strategies are proposed,which may be beneficial to further study and develop the intervening measure for the progression of Alzheimer's disease.

关键词： Alzheimer’s disease Gut microbiota Brain-gut axis Diet Physical ac.ivity

Performance of iron-air battery with iron nanoparticle-encapsulated c-N composite electrode

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Frontiers in Energy 2024年第1期18卷 42-53页

作者： can FANG Xiangmei tang Jiaoyan WANG Qingfeng Yi School of chemistry and chemical Engineering Hunan University of Science and TechnologyXiangtan 411201China Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and conversion Xiangtan 411201China

Highly efficient and stable iron electrodes are of great significant to the development of iron-air battery(iAB).in this paper,iron nanoparticle-encapsulated c–N composite(NanoFe@cN)was synthesized by pyrolysis using polyaniline as the c–N *** performance of the NanoFe@cN in different electrolytes(alkaline,neutral,and quasi-neutral)was investigated via cyc.ic voltammetry(cV).The iAB was assembled with NanoFe@cN as the anode and irO_(2)+Pt/c as the *** effects of different discharging/charging current densities and electrolytes on the battery performance were also *** K_(2)SO_(4)electrolyte can effec.ively suppress the passivation of iron electrode,and the battery showed a good cyc.ing stability during 180 charging/discharging *** to the pure nano-iron(NanoFe)battery,the NanoFe@cN battery has a more stable cyc.ing stability either in KOH or NH_(4)cl+Kcl electrolyte.

关键词： energy storage and conversion metallic composites nanocomposites iron-air battery iron anode

Effect of structural characteristics on the transport characteristics of solid particles in the thermal storage and release system of circulating fluidized bed

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Particuology 2024年第6期89卷 22-31页

作者： Zengc.i Ji Guoliang Song Zihua tang Liwei Sun institute of Engineering Thermophysics Chinese Academy of SciencesBeijing100190China University of c.inese Academy of Sciences Beijing100049China Dalian National Laboratory for clean Energy Dalian116023China

coal-fired power generation stands as the most economically viable modulating power source in present-day *** holds the potential to offer prospec.ive solutions to the challenges posed by the rapid expansion of intermittent,unpredictable,and unstable renewable energy *** particle thermal storage technology emerges as an effec.ive means to enhance the flexibility of coal-fired circulating fluidized bed power *** attain an optimized structure for the solid particle thermal storage and release system in circulating fluidized bed units,experimental research was conducted on a 0.1 MWth circulating fluidized bed test *** study delved into the impact of ash storage bin geometries and the shapes of their feed-discharge valves on the control properties of solid particle *** experimental outcomes reveal that employing inverted m-shaped valve and dual U-shaped valves for feed control,alongside U-shaped valves and N-shaped valves for discharge control,both enable efficient and rapid storage and release of solid particles within the circulating fluidized *** similar air distribution conditions,the inverted m-shaped valve exhibits lower conveying energy consumption than the dual U-shaped valves,while the N-shaped valve excels in control characteristics over the U-shaped ***,the inverted m-shaped valve and the N-shaped valve demonstrate optimal overflow port heights,and the ash storage bin exhibits an optimum height-to-diameter ratio.

关键词： Solid particle Thermal storage System structure Transport regulation

Effect of Air Distribution on the Transport characteristics of Solid Particles in the Thermal Storage and Release System of circulating Fluidized Bed

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Journal of Thermal Science 2024年第4期33卷 1554-1563页

作者： Ji Zengc.i SONG Guoliang tang Zihua SUN Liwei State Key Laboratory of coal conversion Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing100190China University of c.inese Academy of Sciences Beijing100049China Dalian National Laboratory for clean Energy Dalian116023China

Solid particle heat storage technology offers a potential solution to the challenges posed by the significant growth of renewable energy sources,particularly in terms of grid security and ***,it has the capability to optimize the energy utilization efficiency of the power *** order to investigate the transport regulation characteristics of solid particles in the thermal storage and release system of a circulating fluidized bed(cFB),a test rig with a capacity of 0.1 MW(th)was *** rig was utilized to systematically study the transport regulation characteristics of solid particles under the double U-type valve feed structure and U-type valve discharge *** experimental findings indicate that the system's design enables efficient and rapid storage and release of solid particles in the *** air distribution mode,specifically the double U-type valve feed structure and the U-type valve discharge structure,significantly influence the feed and discharge characteristics of the ash storage *** was observed that the impact of loose air on these characteristics is more substantial than that of the return air,irrespec.ive of the feed structure or the return *** adjusting the feed and discharge rate,it is recommended to adopt a scheme that involves coarse adjustment through loose air and fine adjustment through return air.

关键词： solid particle thermal storage air distribution mode transport regulation