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Development and application of an intelligent thermal state monitoring system for sintering machine tails based on CNN-LSTM hybrid neural networks

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Journal of Iron and Steel Research International 2025年第1期32卷 52-63页

作者： Da-lin Xiong Xin-yu Zhang Zheng-wei yu Xue-feng Zhang Hong-ming Long Liang-jun chen Anhui Province Key Laboratory of Metallurgical Engineering&Resources Recycling Anhui University of TechnologyMa’anshan243002AnhuiChina School of Metallurgical Engineering Anhui University of TechnologyMa’anshan243032AnhuiChina School of Computer Science Anhui University of TechnologyMa’anshan243032AnhuiChina

Real-time prediction and precise control of sinter quality are pivotal for energy saving,cost reduction,quality improvement and efficiency enhancement in the ironmaking *** advance,the accuracy and comprehensiveness of sinter quality prediction,an intelligent flare monitoring system for sintering machine tails that combines hybrid neural networks integrating convolutional neural network with long short-term memory(CNN-LSTM)networks was *** system utilized a high-temperature thermal imager for image acquisition at the sintering machine tail and employed a zone-triggered method to accurately capture dynamic feature images under challenging conditions of high-temperature,high dust,and *** feature images were then segmented through a triple-iteration multi-thresholding approach based on the maximum between-class variance method to minimize detail loss during the segmentation *** the advantages of CNN and LSTM networks in capturing temporal and spatial information,a comprehensive model for sinter quality prediction was constructed,with inputs including the proportion of combustion layer,porosity rate,temperature distribution,and image features obtained from the convolutional neural network,and outputs comprising quality indicators such as underburning index,uniformity index,and FeO content of the *** accuracy is notably increased,achieving a 95.8%hit rate within an error margin of±*** the system is applied,the average qualified rate of FeO content increases from 87.24%to 89.99%,representing an improvement of 2.75%.The average monthly solid fuel consumption is reduced from 49.75 to 46.44 kg/t,leading to a 6.65%reduction and underscoring significant energy saving and cost reduction effects.

关键词： Sinter quality Convolutional neural network Long short-term memory Image segmentation FeO prediction

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An Angle Trajectory Tracking for a 3-DOF Pneumatic Motion Platform by the NI Compact RIO Embedded System

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Journal of Mechanics Engineering and Automation 2013年第1期3卷 14-21页

作者： yuan-ming cheng yu-Song chen Department of Mechanical and Automation Engineering Kao-Yuan University Kaohsiung 821 Taiwan

An angle trajectory tracking of a 3-DOF （Degree Of Freedom） pneumatic motion platform by the NI Compact RIO control system was investigated. In this study, the positions of moving platform are changed by extension or shortening of the three pneumatic cylinders. The response of pneumatic cylinder is relatively slow for motor actuator and can get a good single-axis trajectory control by traditional P controller, but the trajectory tracking of platform has a delay phenomenon for angle instantly larger change. To improve this situation in this study, Fuzzy system is used in the trajectory pre-compensation. By the angle changes and the angle rates of change in Fuzzy systems, the value of a pre-compensation output and each axis value are calculated using the Jacobian matrix after compensation in each axis. Through experiments, this Fuzzy pre-compensation method is proved to be able to improve the delay situation of angle trajectory tracking.

关键词： Parallel mechanism Fuzzy controller Compact RIO trajectory tracking.

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Activation of peroxymonosulfate by sustainable biomass-based carbon nanotubes for controlling the spread of plant viruses in water environments

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Journal of Environmental Sciences 2025年第3期149卷 99-112页

作者： Jian Tang yujie Wang JunMa yujie chen ming chen College of Resources and Environment Yangtze UniversityWuhan 430100China Key Laboratory of Reservoir Aquatic Environment Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China Chongqing School University of Chinese Academy of SciencesChongqing 400714China School of Geography and Tourism Chongqing Normal UniversityChongqing 400714China

With the increasing demand for water in hydroponic systems and agricultural irrigation,viral diseases have seriously affected the yield and quality of *** removing plant viruses in water environments,virus transmission can be prevented and agricultural production and ecosystems can be *** so far,there have been few reports on the removal of plant viruses in water ***,in this study,easily recyclable biomass-based carbon nanotubes catalysts were synthesized with varying metal activities to activate peroxymonosulfate(PMS).Among them,the magnetic 0.125Fe@NCNTs-1/PMS system showed the best overall removal performance against pepper mild mottle virus,with a 5.9 log_(10)removal within 1 ***,the key reactive species in the 0.125Fe@NCNTs-1/PMS system is^(1)O_(2),which can maintain good removal effect in real water matrices(river water and tap water).Through RNA fragment analyses and label free analysis,it was found that this system could effectively cleave virus particles,destroy viral proteins and expose their *** capsid protein of pepper mild mottle virus was effectively decomposed where serine may be the main attacking sites by^(1)O_(2).Long viral RNA fragments(3349 and 1642 nt)were cut into smaller fragments(∼160 nt)and caused their *** summary,this study contributes to controlling the spread of plant viruses in real water environment,which will potentially help protect agricultural production and food safety,and improve the health and sustainability of ecosystems.

关键词： Pepper mild mottle virus Removal Plant virus spread Biomass-based carbon nanotubes Water environments

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Cytomegalovirus Pneumonia in Patients with Rheumatic Diseases After Immunosuppressive Therapy： A Single Center Study in China

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Chinese Medical Journal 2016年第3期129卷 267-273页

作者： yu Xue Li Jiang Wei-Guo Wan yu-ming chen Jiong Zhang Zhen-Chun Zhang Department of Rheumatology Huashan Hospital Fudan University Shanghai 200040 China Institute of Rheumatology Immunology and Allergy Fudan University Shanghai 200040 China Department of Rheumatology Linyi People's Hospital Linyi Shandong 276000 China Department of Laboratory Medicine Huashan Hospital Fudan University Shanghai 200040 China

Background： Rheumatic diseases involve multiple organs that are affected by immunological *** with corticosteroids and immunosuppressive agents may also increase the frequency of *** （CMV） is a widespread herpes virus and a well-recognized pathogen, which causes an opportunistic and potentially fatal infection in immunocompromised *** retrospective study aimed to investigate the clinical and laboratory characteristics of CMV pneumonia in patients with rheumatic diseases after immunosuppressive therapy in a single center in Shanghai, ***： Eight hundred and thirty-four patients with rheumatic diseases who had undergone CMV-DNA viral load tests were included, and the medical records of 142 patients who were positive for CMV-DNA in plasma samples were *** Prism version 5.013 （San Diego, CA, USA） was used to conduct statistical *** correlation between CMV-DNA viral loads and lymphocyte counts was assessed using the Spearman rank correlation coefficient *** between qualitative data was analyzed using Pearson＆#39;s Chi-squared *** cut-offthresholds for CMV-DNA viral load and lymphocyte count were determined by receiver operating characteristic （ROC） curve ***： One hundred and forty-two patients had positive CMV viral load *** these 142 patients, 73 patients with CMV pneumonia were regarded as symptomatic, and the other 69 were *** symptomatic group received higher doses ofprednisolone （PSL） and more frequently immunosuppressants than the asymptomatic group （P 〈 0.01）.The symptomatic group had lower lymphocyte counts, especially CD4＋ T-cells, than the asymptomatic group （P 〈 0.01）.By ROC curve analysis, when CD4＋ T-cell count was 〈0.39 ＆#215; 109/L, patients with rheumatic diseases were at high risk for symptomatic CMV *** CMV-DNA load was significantly higher in the symptomatic patients than that in asymptomatic patients （P 〈 0.01;t

关键词： Cytomegalovirus Cytomegalovirus Pneumonia Polymerase Chain Reaction Rheumatic Disease Viral Load

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Laparoscopic surgery for early gallbladder carcinoma:A systematic review and meta-analysis

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World Journal of Clinical Cases 2020年第6期8卷 1074-1086页

作者： Xu Feng Jia-Sheng Cao ming-yu chen Bin Zhang Sarun Juengpanich Jia-Hao Hu Win Topatana Shi-Jie Li Ji-Liang Shen Guang-yuan Xiao Xiu-Jun Cai Hong yu Department of General Surgery Sir Run-Run Shaw HospitalZhejiang UniversityHangzhou 310016Zhejiang ProvinceChina Department of General Surgery Jiaxing Hospital of Traditional Chinese MedicineJiaxing 314000Zhejiang ProvinceChina

BACKGROUND There is a controversy as to whether laparoscopic surgery leads to a poor prognosis compared to the open approach for early gallbladder carcinoma (GBC)We hypothesized that the laparoscopic approach is an alternative for early *** To identify and evaluate the safety and feasibility of laparoscopic surgery in the treatment of early *** A comprehensive search of online databases,including MEDLINE (PubMed),Cochrane libraries,and Web of Science,was performed to identify noncomparative studies reporting the outcomes of laparoscopic surgery and comparative studies involving laparoscopic surgery and open surgery in early GBC from January 2009 to October 2019.A fixed-effects meta-analysis was performed for 1-and 5-year overall survival and postoperative complications,while 3-year overall survival,operation time,blood loss,the number of lymph node dissected,and postoperative hospital stay were analyzed by random-effects *** The review identified 7 comparative studies and 8 non-comparative studies.1068 patients (laparoscopic surgery:613;open surgery:455) were included in the meta-analysis of 1-,3-,and 5-year overall survival with no significant differences observed [(HR=0.54;95%CI:0.29-1.00;12=0.0%;P=0.051),(HR=0.75;95%CI:0.34-1.65;I^2=60.7%;P=0.474),(HR=0.71;95%CI:0.47-1.08;I^2=49.6%;P=0.107),respectively].There were no significant differences in operation time[weighted mean difference (WMD)=18.69;95%CI:-19.98-57.36;I^2=81.4%;P=0.343],intraoperative blood loss (WMD=-169.14;95%CI:-377.86-39.57;I2=89.5%;P=0.112),the number of lymph nodes resected (WMD=0.12;95%CI:-2.95-3.18;I^2=73.4%;P=0.940),and the complication rate (OR=0.69;95%CI:0.30-1.58;I2=0.0%;P=0.377) between the two groups,while patients who underwent laparoscopic surgery had a reduced length of hospital stay (WMD=-5.09;95%CI:-8.74--1.45;I2=91.0%;P=0.006).CONCLUSION This systematic review and meta-analysis confirms that laparoscopic surgery is a safe and feasible alternative to open sur

关键词： Laparoscopic surgery Open surgery Early gallbladder carcinoma Survival Meta-analysis

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A case of huge primary liposarcoma in the liver

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World Journal of Gastroenterology 2006年第7期12卷 1157-1159页

作者： Liang-Mou Kuo Hong-Shiue Chou Kun-ming Chan ming-Chin yu Wei-chen Lee Department of General Surgery Chang-Gung Memorial Hospital and Medical School of Chang-Gung University Taoyuan Taiwan China

Primary liver liposarcoma is a rare disease. Because of its rarity, the knowledge of the clinical course, management, and prognosis of primary liver liposarcoma are all limited for clinicians. A 61-year-old female patient who suffered from a huge primary liposarcoma in the central portion of the liver had the clinical presentations of fever, nausea, vomiting, jaundice, and body weight loss. The huge tumor was resected successfully. However, the tumor recurred repeatedly and she had repeated hepatectomies to remove the tumor. The tumor became aggravating after repeated surgeries. Eventually, the patient had cervical spinal metastasis of liposarcoma and she survived for 26 months after liver liposarcoma was diagnosed. Although the tumor may become aggravating after repeated surgeries, repeated hepatectomies are still the best policy to achieve a long-term survival for the patients.

关键词： Liver liposarcoma Hepatectomy

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Prediction of intrusive gas pores caused by resin burning in sand core for iron castings

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China Foundry 2025年第1期22卷 23-32页

作者： Ji-wu Wang Xiao-long Wang yu-cheng Sun yu-hang Huang Xiu-ming chen Xiong-zhi Wu Na Li Jin-wu Kang Tao Jing Tian-you Huang Hai-liang yu School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Weichai Power Co. Ltd.Weifang 261061ShandongChina School of Mechanical Engineering Central South UniversityChangsha 41000China School of Materials Science and Engineering Key Laboratory for Advanced Materials Processing TechnologyTsinghua UniversityBeijing 100084China

In the production of castings,intrusive gas pore represents a kind of common defects which can lead to leakage in high gas-tightness requirement castings,such as cylinder blocks and cylinder heads for *** occurs due to the intrusion of gases generated during the resin burning of the sand core into castings during the casting ***,a gas generation and flow constitution model was established,in which the gas generation rate is a function of temperature and time,and the flow of gas is controlled by the gas release,conservation,and Darcy's *** heat transfer and gas flow during casting process was numerically *** dangerous point of cores is firstly identified by a virtual heat transfer method based on the similarity between heat transfer and gas flow in the sand *** gas pores in castings are predicted by the gas pressure,the viscosity and state of the melt for these dangerous *** distinct sand core structures were designed and used for the production of iron castings,and the simulated gas pore results were validated by the obtained castings.

关键词： gas pore numerical simulation iron casting sand core resin

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Homogeneous catalysis and heterogeneous separation: Ionic liquids as recyclable photocatalysts for hydroacylation of olefins

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Chinese Chemical Letters 2025年第2期36卷 417-421页

作者： Hao-Cong Li ming Zhang Qiyan Lv Kai Sun Xiao-Lan chen Lingbo Qu Bing yu College of Chemistry School of Life Sciences Zhengzhou University

The photoinduced ligand-to-metal charge transfer （LMCT） process has been extensively investigated,however,the recovery of photocatalysts has remained a persistent challenge in the *** light of this issue,a novel approach involving the development of iron-based ionic liquids as photocatalysts has been pursued for the first time,with the goal of simultaneously facilitating the LMCT process and addressing the issue of photocatalyst ***,the iron-based ionic liquid 1–butyl–3-methylimidazolium tetrachloroferrate （C4mim-Fe Cl4） demonstrates exceptional recyclability and stability for the photocatalytic hydroacylation of *** study will pave the way for new approaches to photocatalytic organic synthesis using ionic liquids as recyclable photocatalysts.

关键词： Heterogeneous separation Homogeneous catalysis Ionic liquids LMCT Recyclable photocatalysts

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Understanding and probing progression of localized corrosion on inner walls of steel pipelines:an overview

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Journal of Iron and Steel Research International 2025年第1期32卷 1-18页

作者： ming-yu Wang Hai-yuan Yao Yong-fei Liu Ye-sen Zhu Wan-bin chen yun-ze Xu Yi Huang School of Naval Architecture and Ocean Engineering Dalian University of TechnologyDalian 116024LiaoningChina China National Offshore Oil Corporation Research Institute Co. Ltd.Beijing 100028China State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentDalian University of TechnologyDalian 116024LiaoningChina

Corrosion poses a major threat to the safety of transportation ***,it is crucial to have an in-depth understanding of corrosion mechanisms in pipeline steels for the effective management of pipeline *** research on corrosion mechanisms relies on the use of efficient and reliable corrosion monitoring and analysis *** advancements in corrosion monitoring techniques specifically designed for the localized corrosion monitoring were aimed to be introduced,and a comprehensive overview of recent progress in understanding the localized corrosion mechanisms in pipeline steels was *** on the different corrosive environments encountered,the localized corrosion issues inside pipelines are classified into two categories:localized corrosion primarily influenced by electrochemical processes and localized corrosion controlled by both electrochemical and mechanical ***,a thorough analysis of the synergistic effects between micro-cell and macro-cell currents,as well as the interplay of mechanics and electrochemistry is ***,recommendations for future research on the mechanisms of internal localized corrosion in pipelines are provided.

关键词： Pipeline steel Localized corrosion Corrosion type Corrosion monitoring Corrosion mechanism

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New Taub-NUT black holes with massive spin-2 hair

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 51-58页

作者： yu-Qi chen Hai-Shan Liu Center for Joint Quantum Studies and Department of Physics School of ScienceTianjin UniversityTianjin 300350China

We consider Einstein gravity extended with quadratic curvature invariants,within which the well-known Ricci-flat Taub-NUT black hole remains a *** analysis of the unstable Lichnerowicz modes in the Taub-NUT background enables us to identify the mass and NUT parameters(m,n)where new Taub-NUT black holes can *** then adopt numerical techniques to construct these new Taub-NUT black holes,which bifurcate away from the Ricci-flat *** the Ricci-flat Taub-NUT,there can exist two new black holes for an appropriate given temperature,making it a total of three if we include the Ricci-flat one.

关键词： higher derivative gravity black hole solution Taub-NUT spacetime

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