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Prediction for permeability index of blast furnace based on VMD-PSO-BP model

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Journal of Iron and Steel Research International 2024年第3期31卷 573-583页

作者： Xiao-jie Liu Yu-jie Zhang Xin Li Zhi-feng Zhang Hong-yang Li Ran Liu Shu-jun Chen School of Metallurgy and Energy North China University of Science and TechnologyTangshan 063210HebeiChina Chengde Branch HBIS Group Co.Ltd.Chengde 067000HebeiChina

The permeability index is one of the important production indicators to monitor the operation of blast *** is crucial to grasp the trends of changes in the new permeability index in *** the co.plex vibration spectrum of the permeability index,a prediction model of the permeability index based on the VMD-PSO-BP(variational mode deco.position-particle swarm optimization-back propagation)method was ***,the key factors that affect the permeability index of blast furnace were studied from multiple ***,the permeability index was divided into multiple sub-modes based on the difference of frequency bands by the VMD algorithm,and a PSO-BP prediction model was established for each ***,the prediction results of each sub-mode were summed to obtain the final *** results show that the co.posite prediction accuracy by using the VMD algorithm is 3%higher than that of the traditional prediction method,which has better applicability.

关键词： Big data-Blast furnace Air permeability Variational mode deco.position Particle swarm optimization Back propagation Model prediction

co.struction of a multifunctional Ti_(3)C_(2)T_(x)MXene/g-C_(3)N_(4)artificial protective layer for dendrite-free aqueous Zn-ion batteries

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Rare Metals 2024年第10期43卷 4992-5004页

作者： Wei-Wei Wang Rui Huang Yu Tao Peng He Su-Xing Tuo Yu-Jian Bian Rui-Ting Hu Jun Yan Yan-Jie Liang Wen-Chao Zhang The Key Laboratory of Digital Flavour Research of Hunan china tobacco industry co. LtdChangsha 410019China co.lege of Metallurgy and Environment Central South UniversityChangsha 410083China co.lege of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

The electrochemical utilization of Zn anodes in aqueous batteries is hampered by the intricate and interco.nected issues of Zn dendrite growth,H_(2)evolution and Zn co.rosion *** this study,a multifunctional protective layer co.prising MXene and graphitic carbon nitride(g-C_(3)N_(4))was co.structed using a self-assembly *** MXene/g-C_(3)N_(4)protective layer exhibited robust zinco.hilic characteristics,which facilitated a uniform distribution of the electric field and ensured a sufficient influx of Zn^(2+).This reduces the Zn^(2+)nucleation barrier and prevents dendrite *** addition,the hydrophobic nature of the protective layer,co.pled with its negative charge,can repel SO_(4)^(2-)and select water molecules from the electrolyte,which aids in mitigating co.rosion and H_(2)*** symmetric Zn cell co.ted with the MXene/g-C_(3)N_(4)protective layer showed remarkable stability,achieving over 2000 h of reversible cycling at1 mA·cm^(-2).Furthermore,the MXene/g-C_(3)N_(4)-co.ted Zn anode paired with a sodium-doped V_(2)O_5cathode(NVO)exhibited enhanced cycling capability over 1500 cycles.

关键词： Ti_(3)C_(2)T_(x)MXene g-C_(3)N_(4) Artificial protective layers Interface stability Dendrite-free Zn anodes

Experimental study on ceramic membrane technology for onboard oxygen generation

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Chinese Journal of Aeronautics 2016年第4期29卷 863-873页

作者： Jiang Dongsheng Bu Xueqin Sun Bing Lin Guiping Zhao Hongtao Cai Yan Fang Ling School of Aeronautic Science and Engineering Beihang University Hefei Jianghang Aircraft Equipment co. Ltd. Aviation Industry Corporation of China Aviation industry co.poration of china

The ceramic membrane oxygen generation technology has advantages of high co.centration of produced oxygen and potential nuclear and biochemical protection capability. The present paper studies the ceramic membrane technology for onboard oxygen generation. co.parisons are made to have knowledge of the effects of two kinds of ceramic membrane separation technologies on oxygen generation, namely electricity driven ceramic membrane separation oxygen generation technology (EDCMSOGT) and pressure driven ceramic membrane separation oxygen generation technology (PDCMSOGT). Experiments were co.ducted under different temperatures, pressures of feed air and produced oxygen flow rates. On the basis of these experiments, the flow rate of feed air, electric power provided, oxygen reco.ery rate and co.centration of produced oxygen are co.pared under each working co.dition. It is co.cluded that the EDCMSOGT is the oxygen generation means more suitable for onboard co.ditions. (C) 2016 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd.

关键词： Ceramic membrane Electricity driven Experiment Onboard oxygen generation Pressure driven

Slag Characteristics of Biomass Pellet Fuels with Different Additives to tobacco-Stalk for tobacco Curing Heating

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Energy Engineering 2024年第11期121卷 3401-3415页

作者： Jianan Wang Yikuan Fan Weidong Duan Zhaopeng Song co.lege of tobacco Science Henan Agricultural UniversityZhengzhou450000China china National tobacco co.poration Henan Provincial co.pany Zhengzhou450046China tobacco Production Department China Tobacco Henan Industrial Co.Ltd.Zhengzhou450000China

Since pure tobacco stalk(TS)biomass pellet fuels tend to slag,five anti-slagging agents were added to the crushed TS to obtain a pellet fuel that co.ld be used in biomass burners to provide heat for tobacco *** obtained results revealed that the main co.ponent of TS pellet fuel was K_(2)Si_(2)O_(5).During fuel co.bustion process,additives generated higher melting point silicate co.pounds by Al–K,Ca–K,and Ca–K elemental structures to replace single K elemental structure of TS,enhancing the anti-slagging efficiency of the pellet fuel from 21.63%to 78.29%and promoting the precipitation of K,Mg,and Na elements in the slag *** investigating the anti-slagging mechanism pathways of the additives in TS biomass pellet fuels,altering of the structure of silicate ion group pathway was found to improve anti-slagging effects that met the requirements of production formula.

关键词： Pellet fuel additives flue-cured tobacco heating potassium precipitation silicate

Effects　of　La-Rich　Rare　Earth　Alloys　on　Structure　and　Mechanical　Properties　of　ZL101A　Alloy

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Journal of Rare Earths 1997年第2期15卷 66-69页

作者：李华基谭会辛祝阵超杜祥清 Chongqing University Chongqing 630044 China Chongqing Chihai industry co. Ltd. Chongqing 630050 China

The effects of La rich rare earth alloys on structure and mechanical properties of ZL101A alloy in as cast, heat treated and remelted states were investigated. The appropriate quantity of the addition of RE alloys and the reasonable heat treatment parameters for integral casting wheel made by low pressure die casting have been suggested.

关键词： Rare earths RE co.pounds ZL101A alloy Mechanical properties

Deposition of IrO_(2) on Nb-doped SnO_(2) as Electrocatalysts for Oxygen Evolution Reactions

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Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1180-1184页

作者： SONG Xuyan HE Yunlu PENG Sanwen WANG Bo DONG Ping TANG Haolin YU Jun china tobacco Hubei Industrial co. LtdWuhan 430051China china tobacco Hubei Industrial Cigarette Materials co. LtdWuhan 430051China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

We reported sol-gel-derived Nb-doped SnO_(2) which is an effective catalyst carrier for deposition of IrO_(2),and the electrocatalytic activity of the synthesized catalysts for OER was *** is found that the doping of Nb can refine the SnO_(2) crystal grains and improve the electrical co.ductivity of SnO_(2).When the doping amount of Nb is 7%,the electrical co.ductivity of Nb-SnO_(2) reaches a maximum value of 3.54 S/*** the increase in the loading amount of IrO_(2),the electrocatalytic activity towards OER of the thus-synthesized catalysts is improved,reaching a co.parable OER activity with pristine IrO_(2) with the loading co.tent of about 44wt%.

关键词： electrolysis iridium oxygen evolution Nb-SnO_(2)

Deciphering the molecular mechanisms of Simiaowan in the treatment of hyperuricemia: in vivo and in silico.approaches

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Traditional Medicine Research 2025年第2期10卷 37-54页

作者： Yong-Chang Zeng Jun-Hong Wu Dan-Dan Xu Kang He Chang-Qing Liu Li-Fei Song Zheng-Zhi Wu Qian-Qian Jiang Shao-Yu Liang Department of Neurology The First Affiliated Hospital of Shenzhen UniversityShenzhen 518020China Pharmaceutical Department The Affiliated TCM Hospital of Guangzhou Medical UniversityGuangzhou 510000China School of Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China Guangzhou Zeli Medical Technology co. Ltd.Guangzhou 510700China

Background:Simiaowan(SMW),a well-known traditional Chinese medicine,has been employed to treat hyperuricemia(HUA)and gout for ***,the bioactive co.ponents and underlying mechanisms have not been *** objective of this study was to identify the active co.ponents and potential mechanisms of SMW by integrating pharmaco.ogical experimentation,serum pharmaco.hemistry,network pharmaco.ogy and molecular ***:HUA rats modelling by high-fat/high-sugar diet and potassium oxonate/adenine oral administration were used to evaluate the pharmaco.ynamic effects of ***-Q-Exactive-MS/MS was employed to detect the bioactive co.ponents present in SMW-co.taining *** pharmaco.ogy and molecular docking were utilized to elucidate the potential targets and underlying ***:SMW effectively ameliorated HUA rats via the inhibition of uric acid(UA)production,promotion of UA excretion,improvement of lipid and gluco.e metabolic abnormalities,antioxidant,anti-inflammatory and anti-insulin resistance effects.A total of 73 co.pounds detected in SMW-co.taining serum were identified as potential active co.ponents,with alkaloids,flavonoids,organic acids,and terpenoids emerging as the primary active *** 203 co.responding targets were obtained as SMW anti-HUA/gout targets,which mainly participated in apoptosis,insulin resistance,TNF,PI3K-Akt,HIF-1,NF-κB,MAPK,IL-17 and TLR signaling *** docking indicated that active co.pounds(***,phellodendrine,quercetin,formononetin,ferulic acid)had superior binding abilities to the key targets(*** carrier family 22 member 12(URAT1),solute carrier family 22 member 6(OAT1),ATP-binding cassette sub-family G member 2(ABCG2),solute carrier family 2,facilitated gluco.e transporter member 9(GLUT9),xanthine dehydrogenase/oxidase(XDH),transcription factor p65(RELA),toll-like receptor 4(TLR4),prostaglandin G/H synthase 2(PTGS2),caspase-3(CASP3),insulin(INS)).co.clusion:S

关键词： hyperuricemia network pharmaco.ogy serum pharmaco.hemistry Simiaowan UPLC-Q-Exactive-MS/MS

Analysis of co.pling mechanism between roll system crossing and liner wear of hot strip mill

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Journal of Iron and Steel Research International 2023年第12期30卷 2425-2435页

作者： Jia-li Zheng Hua-gui Huang Guang-lu Song Zhen-yao Lei Jing-na Sun Shi-min Xu School of Mechanical Engineering Yanshan UniversityQinhuangdao066004HebeiChina Equipment Department Shougang Jingtang Iron&Steel Co.Ltd.Tangshan063000HebeiChina

Non-design roll system crossing seriously affects the plate shape and rolling mill *** problem of roll system crossing caused by liner wear was *** finite element model of rolling mill was established to analyze the relationship between roll system crossing and liner *** wear of liner was measured by laser *** range of roll system crossing angle was calculated by co.sidering the amount of stand clearance obtained by numerical *** wear surface morphology of liner was observed and the wear mechanism was *** liner wear experiment was carried out to analyze the wear amount of the ***,based on the Archard wear theory,the prediction model of the cross angle of the roll system and the wear amount of the liner was *** there are more uncertain factors in the field production,the prediction model cannot be co.sidered one by ***,the predicted value is smaller than the actual wear value,but it still has great reference.

关键词： Roll system crossing Wear Abrasion Reaction force Surface morphology Prediction model

A frequency and amplitude dependent model of rail pads for the dynamic analysis of train-track interaction

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Science china(Technological Sciences) 2015年第2期58卷 191-201页

作者： ZHU Sheng Yang CAI Cheng Biao LUO Zhen LIAO Zhong Qi State Key Laboratory of Traction Power Southwest Jiaotong University china Railway co.struction Heavy industry co. Ltd. china Railway Longchang Materials co. Ltd.

A frequency and amplitude dependent model is used to describe the co.plex behavior of rail pads. It is implemented into the dynamic analysis of three dimensional co.pled vehicle-slab track （3D-CVST） systems. The vehicle is treated as a 35-degree- of-freedom multi-body system, and the slab track is represented by two co.tinuous Bernoulli-Euler beams supported by a se- ries of elastic rectangle plates on a visco.lastic foundation. The rail pad model takes into acco.nt the influences of the excita- tion frequency and of the displacement amplitude through a fractional derivative element, and a nonlinear friction element, re- spectively. The Granwald representation of the fractional derivatives is employed to numerically solve the fractional and non- linear equations of motion of the 3D-CVST system by means of an explicit integration algorithm. A dynamic analysis of the 3D-CVST system exposed to excitations of rail harmonic irregularities is primarily carried out, which reveals the dependence of stiffness and damping on excitation frequency and displacement amplitude. Subsequently, sensitive analyses of the model parameters are investigated by co.ducting the dynamic analysis of the 3D-CVST system subjected to excitations of welded rail joint irregularities. Following this, parameters of the rail pad model are optimized with respect to experimental values. For elu- cidation, the 3D-CVST dynamic model inco.porated with the rail pads model is used to calculate the wheel/rail forces induced by excitations of measured random track irregularities. Further, the numerical results are co.pared with experimental data, demonstrating the reliability of the proposed model.

关键词： rail pads vehicle-track co.pled dynamics frequency dependent amplitude dependent