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Deformation resistance prediction of tandem cold rolling based on grey wolf optimization and support vector regression

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Journal of Iron and Steel Research International 2023年第9期30卷 1803-1820页

作者： Ze-dong Wu Xiao-chen Wang Quan Yang dong Xu Jian-wei Zhao jing-dong li Shu-zong Yan National Engineering Technology Research Center of Flat Rolling Equipment University of Science and Technology BeijingBeijing 100083China

In the traditional rolling force model of tandem cold rolling mills,the calculation of the deformation resistance of the strip head does not consider the actual size and mechanical properties of the incoming material,which results in a mismatch between the deformation resistance setting and the actual state of the incoming material and thus affects the accuracy of the rolling force during the low-speed rolling process of the strip *** inverse calculation of deformation resistance was derived to obtain the actual deformation resistance of the strip head in the tandem cold rolling process,and the actual process parameters of the strip in the hot and cold rolling processes were integrated to create the cross-process dataset as the basis to establish the support vector regression(SVR)*** grey wolf optimization(GWO)algorithm was used to optimize the hyperparameters in the SVR model,and a deformation resistance prediction model based on GWO–SVR was *** with the traditional model,the GWO–SVR model shows different degrees of improvement in each stand,with significant improvement in stands S3–*** prediction results of the GWO–SVR model were applied to calculate the head rolling setting of a 1420 mm tandem rolling *** head rolling force had a similar degree of improvement in accuracy to the deformation resistance,and the phenomenon of low head rolling force setting from stands S3 to S5 was obviously ***,the thickness quality and shape quality of the strip head were improved accordingly,and the application results were consistent with expectations.

关键词： Tandem cold rolling Cross-process data application Deformation resistance prediction Support vector regression Grey wolf optimization Rolling force accuracy

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Effect of Annealing Temperature on Low-temperature Toughness of β-Nucleated Polypropylene Random Copolymer/Ethylene-Propylene-Diene Terpolymer Blends

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Chinese Journal of Polymer Science 2015年第2期33卷 256-264页

作者：丁会利 li-yuan Guo dong-jing li De Zheng Jun Chen Yu-ying Qian Institute of Polymer Science and Engineering Hebei University of Technology Guangdong Winner Functional Materials Co. Ltd.

In this study, the effect of annealing temperature on the impact toughness of β-nucleated polypropylene random copolymer（PPR） and ethylene-propylene-diene terpolymer（EPDM） blends was investigated by differential scanning calorimetry（DSC）, wide-angle X-ray diffraction（WAXD）, dynamic mechanical analysis（DMA） and scanning electron microscopy（SEM）. Interestingly, the impact strength of β-PPR/20 EPDM blend annealed at 120 ℃ is 1.8 times as high as that of unannealed samples. In addition, the crystalline structure, the relaxation of chain segments and fracture morphology of β-PPR/EPDM blends were also investigated to explore the toughening mechanism related to annealing. The results show that annealing at moderate temperatures results in the improvement of integrity of the crystal structure and the relative content of β-phase. The work provides a possible method to toughen the semicrystalline polymer at low temperatures by annealing.

关键词： Polypropylene EPDM β-Nucleating agent Annealing Toughening

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Whole process prediction model of silicon steel strip on transverse thickness difference based on Takagi-Sugeno fuzzy network

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Journal of Iron and Steel Research International 2023年第12期30卷 2448-2458页

作者： Hai-nan He Zhuo-hao Dai Xiao-chen Wang Quan Yang Jian Shao jing-dong li Zhi-hong Zhang liang Zhang National Engineering Technology Research Center of Flat Rolling Equipment University of Science and Technology BeijingBeijing100083China Handan Iron and Steel Company of Hebei Iron and Steel Group Co. Ltd.Handan056015HebeiChina

The hot rolling and cold rolling control models of silicon steel strip were *** control of silicon steel strip of hot rolling was a theoretical analysis model,and the shape control of cold rolling was a data-based prediction *** mathematical model of the hot-rolled silicon steel section,including the crown genetic model,inter-stand crown recovery model,and hot-rolled strip section prediction model,is used to control the shape of hot-rolled *** cold rolling shape control is mainly based on Takagi-Sugeno fuzzy network,which is used to simulate and predict the transverse thickness difference of cold-rolled silicon steel ***,a predictive model for the transverse thickness difference of silicon steel strips is developed to provide a new quality control method of transverse thickness of combined hot and cold rolling to improve the strip profile quality and increase economic *** qualified rate of the non-oriented silicon steel strip is finally obtained by applying this model,and it has been steadily upgraded to meet the needs of product quality and flexible production.

关键词： Hot rolling-Strip profile Transverse thickness difference Silicon steel.Takagi-Sugeno fuzzy network

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Prediction and interpretation of photocatalytic NO removal on g-C_(3)N_(4)-based catalysts using machine learning

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Chinese Chemical Letters 2024年第2期35卷 477-483页

作者： jing li Xinyan liu Hong Wang Yanjuan Sun Fan dong School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu 611731China Research Center for Carbon-Neutral Environmental & Energy Technology Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 611731China

Predictive modeling of photocatalytic NO removal is highly desirable for efficient air pollution ***,great challenges remain in precisely predicting photocatalytic performance and understanding interactions of diverse features in the catalytic ***,a dataset of g-C_(3) N_(4)-based catalysts with 255 data points was collected from peer-reviewed publications and machine learning(ML)model was proposed to predict the NO removal *** result shows that the Gradient Boosting Decision Tree(GBDT)demonstrated the greatest prediction accuracy with R 2 of 0.999 and 0.907 on the training and test data,*** SHAP value and feature importance analysis revealed that the empirical categories for NO removal rate,in the order of importance,were catalyst characteristics>reaction process>preparation ***,the partial dependence plots broke the ML black box to further quantify the marginal contributions of the input features(e.g.,doping ratio,flow rate,and pore volume)to the model output *** ML approach presents a pure data-driven,interpretable framework,which provides new insights into the influence of catalyst characteristics,reaction process,and preparation conditions on NO removal.

关键词： Machine learning g-C_(3)N_(4)-based catalysts NO removal Interpretability Catalytic informatics

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A novel mechanism fusion data control method for slab camber in hot rolling

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Journal of Iron and Steel Research International 2023年第5期30卷 960-970页

作者： Le-bao Song dong Xu Peng-fei liu Jin-hang Zhou Hui-qing Yan jing-dong li Hai-nan He Hai-jun Yu Xiao-chen Wang Quan Yang National Engineering Technology Research Center of Flat Rolling Equipment University of Science and Technology BeijingBeijing 100083China Xinjiang Joinworld Co. Ltd.Urumqi 830000XinjiangChina 2250 Hot Strip Mill Hunan Lianyuan Iron and Steel Co.Ltd.Loudi 417000HunanChina

For asymmetric plate shape,control over the hot rolling process mainly depends on the subjective judgement and personal experience of the operator as there are great deviations and much instability in hot ***,the intrinsic mechanisms and sensitivity affecting characteristic parameters and variables in the asymmetric rolling process remain ***,a novel mechanism fusion data control method for slab camber in hot rolling using dimensional analysis and data-driven technique was *** approach of dimensional analysis was used to establish a mathematical model and analyse the main parameters affecting the slab camber of the rough ***,the established mathematical model combined with the data-driven techniques was employed to accurately predict the slab bending ***,the superiority and effectiveness of the proposed model were demonstrated by a comparison with three regression ***,the proposed control strategy was successfully applied in a 1580 mm hot rolling industrial *** automatic control results show that the hit rate of slab cambers in different sizes from 10 to 30 mm is improved,and the quality stability of intermediate slab is significantly improved.

关键词： Mechanism model Dimensional analysis Data-driven technique Camber control Hot rolling

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The role of lipid metabolism in osteoporosis:Clinical implication and cellular mechanism

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Genes & Diseases 2024年第4期11卷 220-233页

作者： jing Zhang Wenhui Hu Zhi Zou Yuheng li Fei Kang Jianmei li Shiwu dong College of Bioengineering Chongqing UniversityChongqing 400044China Department of Biomedical Materials Science College of Biomedical EngineeringArmy Medical University(Third Military Medical University)Chongqing 400038China State Key Laboratory of Trauma and Chemical Poisoning Army Medical University(Third Military Medical University)Chongqing 400038China

In recent years,researchers have become focused on the relationship between lipids and bone metabolism ***,many diseases related to lipid metabolism dis-orders,such as nonalcoholic fatty liver disease,atherosclerosis,obesity,and menopause,are associated with osteoporotic *** has been clinically observed in humans that these lipid metabolism disorders promote changes in osteoporosis-related indicators bone mineral density and bone ***,similar osteoporotic phenotype changes were observed in high-fat and high-cholesterol-induced animal *** lipid metabolism(such as increased oxidized lipids and elevated plasma cholesterol)affects bone microenvironment ho-meostasis via cross-organ communication,promoting differentiation of mesenchymal stem cells to adipocytes,and inhibiting commitment towards ***,disturbances in lipid metabolism affect the bone metabolism balance by promoting the secretion of cyto-kines such as receptor activator of nuclear factor-kappa B ligand by osteoblasts and stimulating the differentiation of ***,this review addresses the possible link be-tween lipid metabolism disorders and osteoporosis and elucidates the potential modulatory mechanisms and signaling pathways by which lipid metabolism affects bone metabolism *** also summarize the possible approaches and prospects of intervening lipid meta-bolismforosteoporosistreatment.

关键词： Bone homeostasis Cross-organ communication lipid metabolism Osteoclast Osteoporosis

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Sensitivity impacts owing to the variations in the type of zero-range pairing forces on the fission properties using the density functional theory

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Nuclear Science and Techniques 2024年第3期35卷 198-207页

作者： Yang Su Ze-Yu li li-Le liu Guo-Xiang dong Xiao-Bao Wang Yong-jing Chen China Nuclear Data Center China Institute of Atomic EnergyBeijing 102413China School of Science Huzhou UniversityHuzhou 313000China

Using the Skyrme density functional theory,potential energy surfaces of^(240)Pu with constraints on the axial quadrupole and octupole deformations(q_(20)and q_(30))were *** volume-like and surface-like pairing forces,as well as a combination of these two forces,were used for the Hartree–Fock–Bogoliubov *** in the least-energy fission path,fission barrier,pairing energy,total kinetic energy,scission line,and mass distribution of the fission fragments based on the different forms of the pairing forces were analyzed and *** fission dynamics were studied based on the timedependent generator coordinate method plus the Gaussian overlap *** results demonstrated a sensitivity of the mass and charge distributions of the fission fragments on the form of the pairing *** on the investigation of the neutron-induced fission of^(239)Pu,among the volume,mixed,and surface pairing forces,the mixed pairing force presented a good reproduction of the experimental data.

关键词： Nuclear fission Density functional theory Pairing force Potential energy surfaces Fission fragment distribution

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Animal models of eosinophilic esophagitis,review and perspectives

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Animal Models and Experimental Medicine 2024年第2期7卷 127-135页

作者： dong li Yujia Wei jing Wang Bo Wang Department of Dermatology Huazhong University of Science and Technology Tongji Medical College Tongji HospitalWuhanChina Health Management Center Huazhong University of Science and Technology Tongji Medical College Tongji HospitalWuhanChina Department of Gastroenterology Huazhong University of Science and Technology Tongji Medical College Tongji HospitalWuhanChina

Eosinophilic oesophagitis(EoE)is an allergen/immune-mediated chronic esophageal disease characterized by esophageal mucosal eosinophilic infiltration and esophageal *** the disease was originally attributed to a delayed allergic reaction to allergens and a Th2-type immune response,the exact pathogenesis is complex,and the efficacy of existing treatments is ***,the study of the pathophysiological process of EOE has received increasing *** models have been used extensively to study the molecular mechanism of EOE pathogenesis and also provide a preclinical platform for human clinical intervention studies of novel therapeutic *** maximize the use of existing animal models of EOE,it is important to understand the advantages or limitations of each modeling *** paper systematically describes the selection of experimental animals,types of allergens,and methods of sensitization and excitation during the preparation of animal models of *** also discusses the utility and shortcomings of each model with the aim of providing the latest perspectives on EoE models and leading to better choices of animal models.

关键词： anaphylaxis disease models animal eosinophilic esophagitis methods

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Epidermal visualized health monitoring system based on stretchable and washable TPU hybrid conductive microtextiles

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Rare Metals 2024年第7期43卷 3185-3193页

作者： jing-Bo Yuan Zhi-Hong Feng dong-Chan li Yang Luo Yun-Lei Zhou School of Chemical Engineering Hebei University of Technology Engineering Research Center of Chemical Technology for Efficient Utilization of Seawater ResourcesMinistry of EducationTianjin 300401China National Key Laboratory of Application Specific Integrated Circuit Shijiazhuang050000China Department of Materials ETH Zürich8093 ZurichSwitzerland Hangzhou Institute of Technology Xidian UniversityHangzhou 311231China

Electronic textiles,an emerging class of electronic technology,offer exciting opportunities for seamless integration with the human *** applications have been developed based on electronic ***,researches on integrating multiple electronic textilebased devices are still *** this study,we present a system integrated with an electrocardiogram monitoring sensor and an electroluminescence device based on stretchable and washable conductive micro *** signal is acquired by an electrocardiograph amplifier and displayed by a dual-color electroluminescence device based on the processed *** integrated electronic device has excellent moisture permeability and comfort for long-term *** system reported in this study opens a new avenue for the application of electronic textiles in health monitoring,robotic prosthetics,and competitive sports.

关键词： Conductive microtextile Textile composite Electronic textile Electroluminescent displays

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The clinical antiprotozoal drug nitazoxanide and its metabolite tizoxanide extend Caenorhabditis elegans lifespan and healthspan

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Acta Pharmaceutica Sinica B 2024年第7期14卷 3266-3280页

作者： Wenfeng li Shuming Chen jing Lang jing Luo Jiahui Chen liping Zhang Zhijie Sun Deli dong Department of Pharmacology China Pharmaceutical UniversityNanjing 210009China

The drugs extending healthspan in clinic have always been *** is an FDA-approved clinical antiprotozoal *** is rapidly metabolized to tizoxanide after absorption in *** previous studies find that nitazoxanide and its metabolite tizoxanide induce mild mitochondrial uncoupling and activate cellular AMPK,oral nitazoxanide protects against experimental hyperlipidemia,hepatic steatosis,and ***,we demonstrate that both nitazoxanide and tizoxanide extend the lifespan and healthspan of Caenorhabditis elegans through Akt/AMPK/sir 2.1/daf16 ***,both nitazoxanide and tizoxanide improve high glucose-induced shortening of *** *** has been a clinical drug with a good safety profile,we suggest that it is a novel anti-aging drug.

关键词： Nitazoxanide Tizoxanide C.elegans Healthspan lifespan AMPK Akt Mitochondrial uncoupling

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