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Boundary Identification for a Blast Furnace

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Chinese Annals of Mathematics,Series B 2007年第5期28卷 571-582页

作者： Yongji TAN rui he School of Mathematical Sciences Fudan University Shanghai 200433 China.

In this paper, the authors discuss an inverse boundary problem for the axisymmetric steady-state heat equation, which arises in monitoring the boundary corrosion for the blast-furnace. Measure temperature at some locations are used to identify the shape of the corrosion boundary. The numerical inversion is complicated and consuming since the wear-line varies during the process and the boundary in the heat problem is not fixed. The authors suggest a method that the unknown boundary can be represented by a given curve plus a small perturbation, then the equation can be solved with fixed boundary, and a lot of computing time will be saved. A method is given to solve the inverse problem by minimizing the sum of the squared residual at the measuring locations, in which the direct problems are solved by axisymmetric fundamental solution method. The numerical results are in good agreement with test model data as well as industrial data, even in severe corrosion case.

关键词： Inverse problem Axi-Symmetric fundamental solution Perturbation method

A rapid calculation method for predicting roll deformation of six-high rolling mill

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Journal of Iron and Steel Research International 2018年第9期25卷 901-909页

作者： Li Xie An-rui he Chao Liu National Engineering Research Center for Advanced Rolling Technology University of Science and Technology BeijingBeijing 100083 China

The method to predict roll deformation precisely and efficiently is vital for the strip shape control of a six-high rolling mill. Traditional calculation methods of roll deformation, such as the finite element method and the influence function method, have been widely used due to their accuracies. However, the required calculation time is too long to be applied to the realtime control. Therefore, a rapid calculation method for predicting roll deformation of a six-high rolling mill was proposed, which employed the finite difference method to calculate the roll deflection and used a polynomial to describe the nonlinear relationship between roll flattening and roll contact pressure. Furthermore, a new correction strategy was proposed in the iteration, where the roll center flattening and the roll flattening deviation were put forward and corrected simultaneously in the iteration process according to the static equilibrium of roll. Finally, by the comparison with traditional methods, the proposed method was proved to be more efficient and it was suitable for the online calculation of the strip shape control.

关键词： Six-high rolling mill Roll deformation Influence function method Rapid calculation method Online model

Raman spectroscopy of diesel and gasoline engine-out soot using different laser power

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Journal of Environmental Sciences 2019年第5期31卷 74-80页

作者： Haiwen Ge Zhipeng Ye rui he Department of Mechanical Engineering Texas Tech University Department of Electrical and Computer Engineering Texas Tech University

We studied engine-out soot samples collected from a heavy-duty direct-injection diesel engine and port-fuel injection gasoline spark-ignition engine. The two types of soot samples were characterized using Raman spectroscopy with different laser powers. A Matlab program using least-square-method with trust-region-reflective algorithm was developed for curve fitting. A DOE(design of experiments) method was used to avoid local convergence. The method was used for two-band fitting and three-band fitting. The fitting results were used to determine the intensity ratio of D(for "Defect" or "Disorder") and G(for"Graphite") Raman bands. It is found that high laser power may cause oxidation of soot sample, which gives higher D/G intensity ratio. Diesel soot has consistently higher amorphous/graphitic carbon ratio, and thus higher oxidation reactivity, compared to gasoline soot, which is reflected by the higher D/G intensity ratio in Raman spectra measured under the same laser power.

关键词： Raman spectroscopy Diesel engine Gasoline engine Soot emission Particulate matter

A bioinspired path planning approach for mobile robots based on improved sparrow search algorithm

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Advances in Manufacturing 2022年第1期10卷 114-130页

作者： Zhen Zhang rui he Kuo Yang School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444People’s Republic of China

In this paper,a bioinspired path planning approach for mobile robots is *** approach is based on the sparrow search algorithm,which is an intelligent optimization algorithm inspired by the group wisdom,foraging,and anti-predation behaviors of *** obtain high-quality paths and fast convergence,an improved sparrow search algorithm is proposed with three new ***,a linear path strategy is proposed,which can transform the polyline in the corner of the path into a smooth line,to enable the robot to reach the goal ***,a new neighborhood search strategy is used to improve the fitness value of the global optimal individual,and a new position update function is used to speed up the ***,a new multi-index comprehensive evaluation method is designed to evaluate these *** results show that the proposed algorithm has a shorter path and faster convergence than other state-ofthe-art studies.

关键词： Path planning Linear path strategy Sparrow search algorithm Multi-index comprehensive evaluation algorithm

Systematic nursing interventions in gastric cancer:A randomized controlled study

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World Journal of Clinical Cases 2022年第6期10卷 1843-1851页

作者： Fang he rui-Xian he Department of Pancreatic and Gastric Surgery National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

BACKGROUND Scientific and effective nursing methods can effectively mitigate negative emotions in *** studies have shown that systematic nursing interventions are beneficial in enhancing the self-efficacy and self-care abilities of patients and improving their physical and mental state,thereby alleviating their fatigue and improving their quality of *** To explore the effects of systematic nursing intervention on cancer-related fatigue,self-efficacy,self-nursing ability,and quality of life in gastric cancer(GC)patients during the perioperative *** In this study,sample size was based on the multivariable *** sample size was 10 times the acceptable variable,with an additional 20% added to account for an expected loss of patients in follow-up for a final sample size of 168 *** nursing measures were used in the control group,while the systematic nursing intervention Adopted Cancer Fatigue Scale(CFS),General Self-Efficacy Scale-Schwarzer(GSES),Self-Care Agency Scale(ESCA),and simple health scale(SF-36)were used in the observation *** questionnaires were administered on admission and *** At admission,there was no statistically significant difference in the scores on each scale between the *** discharge,the CFS and GSES scores in the observation group were 21.56±2.24 and 51.16±11.71,while those in the control group were 29.61±3.48 and 41.58±8.54,respectively,with statistically significant *** ESCA score in the observation and control groups was 112.09±11.72 and 97.87±9.26,***,the scores in all dimensions(self-concept,selfresponsibility,health knowledge level,and self-care skills)in the observation group were higher than those in the control group,with statistically significant *** SF-36 score in the observation and control groups was 75.51±3.63 and 63.24±3.41,respectively,with statistically significant *** scores in all dimensions(mental heal

关键词： Nursing intervention Self-efficacy Self-care ability Cancer-related fatigue Quality of life

The Role of Adipose Tissue-derived Exosomes in Chronic Metabolic Disorders

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Current Medical Science 2024年第3期44卷 463-474页

作者： rui he Yong CheN Division of Endocrinology Department of Internal MedicineTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Laboratory of Endocrinology & Metabolism Key Laboratory of Vascular Aging of the Ministry of EducationTongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Branch of National Clinical Research Center for Metabolic Diseases Wuhan430030China

Excessive fat deposition in obese subjects promotes the occurrence of metabolic diseases,such as type 2 diabetes mellitus(T2DM),cardiovascular diseases,and non-alcoholic fatty liver disease(NAFLD).Adipose tissue is not only the main form of energy storage but also an endocrine organ that not only secretes adipocytokines but also releases many extracellular vesicles(EVs)that play a role in the regulation of whole-body *** are a subtype of EVs,and accumulating evidence indicates that adipose tissue exosomes(AT Exos)mediate crosstalk between adipose tissue and multiple organs by being transferred to targeted cells or tissues through paracrine or endocrine ***,the roles of AT Exos in crosstalk with metabolic organs remain to be fully *** this review,we summarize the latest research progress on the role of AT Exos in the regulation of metabolic ***,we discuss the potential role of AT Exos as biomarkers in metabolic diseases and their clinical application.

关键词： exosome adipose tissue obesity diabetes chronic metabolic disorder miRNA

Speed and Accuracy Tradeoff for LiDAR Data Based Road Boundary Detection

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IEEE/CAA Journal of Automatica Sinica 2021年第6期8卷 1210-1220页

作者： Guojun Wang Jian Wu rui he Bin Tian State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022China State Key Laboratory of Management and Control for Complex Systems Institute of AutomationChinese Academy of SciencesBeijing 100190 the Qingdao Academy of Intelligent Industries ShandongChina

Road boundary detection is essential for autonomous vehicle localization and decision-making,especially under GPS signal loss and lane *** road boundary detection in structural environments,obstacle occlusions and large road curvature are two significant ***,an effective and fast solution for these problems has remained *** solve these problems,a speed and accuracy tradeoff method for LiDAR-based road boundary detection in structured environments is *** proposed method consists of three main stages:1)a multi-feature based method is applied to extract feature points;2)a road-segmentation-line-based method is proposed for classifying left and right feature points;3)an iterative Gaussian Process Regression(GPR)is employed for filtering out false points and extracting boundary *** demonstrate the effectiveness of the proposed method,KITTI datasets is used for comprehensive experiments,and the performance of our approach is tested under different road *** experiments show the roadsegmentation-line-based method can classify left,and right feature points on structured curved roads,and the proposed iterative Gaussian Process Regression can extract road boundary points on varied road shapes and traffic ***,the proposed road boundary detection method can achieve real-time performance with an average of 70.5 ms per frame.

关键词： 3D-LiDAR autonomous vehicle object detection point cloud road boundary

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MXene基水凝胶在创面修复领域的应用

中国组织工程研究 2025年第16期29卷 3486-3493页

作者：何蕊李重一王瑞瑶曾丹范代娣西北大学化工学院陕西省可降解生物医用材料重点实验室陕西省生物材料与发酵工程技术研究中心陕西省西安市710127

背景:MXene基水凝胶是一类纳米复合的多功能性水凝胶材料,在慢性创面(如糖尿病足、压疮、癌症及外伤性溃疡等)修复领域有广阔的应用前景。目的:综述MXene基水凝胶的优势及其在创面修复领域的应用和相关作用机制。方法:检索中国知网、维... 详细信息

背景:MXene基水凝胶是一类纳米复合的多功能性水凝胶材料,在慢性创面(如糖尿病足、压疮、癌症及外伤性溃疡等)修复领域有广阔的应用前景。目的:综述MXene基水凝胶的优势及其在创面修复领域的应用和相关作用机制。方法:检索中国知网、维普、PubMed、Science Direct数据库中收录的文章,文献检索时限为2010年1月至2023年10月,中文检索关键词为“MXene,水凝胶,组织工程应用,创面修复”,英文检索关键词为“MXene,Hydrogel,Wound repair”,最终选取符合标准的70篇文献进行综述。结果与结论:MXene基水凝胶在创面组织工程应用中具有优异的力学、导电和光热性能及生物相容性和抗菌性等生物学功效,可以与其他有机物质和无机物质相结合,在水凝胶中产生更大的治疗作用。含有MXene的水凝胶可以结合创面监测、药物递送和缓释以及光热治疗等方式应用于皮肤创面。尽管MXene基水凝胶复合材料的设计和制备已经取得一些良好进展,但仍处于基础研究阶段,缺乏临床验证其功效性和安全性,具有很大发展潜力和应用空间。

关键词：纳米功能材料 MXene 水凝胶创面修复生物相容性创面监测药物缓释

A THREE-SEGMENT HYDRAULIC MODEL FOR ANNULAR CUTTINGS TRANSPORT WITH FOAM IN HORIZONTAL DRILLING

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Journal of Hydrodynamics 2008年第1期20卷 67-73页

作者： CheNG Rong-chao WANG rui-he College of Petroleum Engineering China University of Petroleum（East China） Dongying 257061 China

Through mechanical analysis, an improved hydraulic model for annular cuttings transport with foam was established for horizontal drilling. Based on the two critical inclination angles, the entire well was divided into three segments. The Bagnold stress, generalized power law rheological model and modified hindered particle settling velocity in foam fluid were adopted in the model to improve the simulation accuracy. The proposed model allows more precise prediction of cuttings transport property in the whole range of well inclination angle. Model performance was examined via case study and experimental data. Simulation results given by the propulsion iteration and trial-and-error method agree well with in-situ horizontal well drilling practice for the case study, and the comparison between the model prediction and Capo’s experimental data shows satisfactory agreement.

关键词： horizontal well foam fluid drilled cuttings hydraulic model well inclination angle