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Chinese Journal of Mechanical Engineering 2018年第4期31卷 168-181页

作者： rui-Ting tong Geng Liu Shaanxi Engineering Laboratory for Transmissions and Controls Northwestern Polytechnical University

Textured surfaces are widely used in engineering components as they can improve tribological properties of sliding contacts, while the detailed behaviors of nanoscale reciprocating sliding contacts of textured surfaces are still lack of study. By using multiscale method, two dimensional nanoscale reciprocating sliding contacts of textured surfaces are investigated. The influence of indentation depth, texture shape, texture spacing, and tip radius on the average friction forces and the running-in stages is studied. The results show that the lowest indentation depth can make all the four textured surfaces reach steady state. Surfaces with right-angled trapezoid textures on the right side are better for reducing the running-in stage, and surfaces with right-angled trapezoid textures on the left side are better to reduce wear. Compared with other textured surfaces, the total average friction forces can be reduced by 82.94%–91.49% for the case of the contact between the tip with radius R = 60rand the isosceles trapezoid textured surface. Besides,the total average friction forces increase with the tip radii due to that bigger tip will induce higher contact areas. This research proposes a detailed study on nanoscale reciprocating sliding contacts of textured surfaces, to contribute to design textured surfaces, reduce friction and wear.

关键词： Nanoscale Reciprocating sliding contacts Textured surface Structure parameters Indentation depth

A Local Region Molecular Dynamics Simulation Method for Nanoscale Sliding Contacts

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Chinese Journal of Mechanical Engineering 2018年第5期31卷 119-126页

作者： rui-Ting tong Geng Liu Tian-Xiang Liu Shaanxi Engineering Laboratory for Transmissions and Controls Northwestern Polytechnical University Xi’an 710072 China Institute for Mechanics and Fluid Dynamics TU Bergakademie Freiberg Lampadiusstr. 4 09596 Freiberg Germany

Computational e ciency and accuracy always conflict with each other in molecular dynamics(MD) simulations. How to enhance the computational e ciency and keep accuracy at the same time is concerned by each corresponding researcher. However, most of the current studies focus on MD algorithms, and if the scale of MD model could be reduced, the algorithms would be more meaningful. A local region molecular dynamics(LRMD) simulation method which can meet these two factors concurrently in nanoscale sliding contacts is developed in this paper. Full MD simulation is used to simulate indentation process before sliding. A criterion called contribution of displacement is presented, which is used to determine the e ective local region in the MD model after indentation. By using the local region, nanoscale sliding contact between a rigid cylindrical tip and an elastic substrate is investigated. Two two?dimensional MD models are presented, and the friction forces from LRMD simulations agree well with that from full MD simulations, which testifies the e ectiveness of the LRMD simulation method for two?dimensional cases. A three?dimensional MD model for sliding contacts is developed then to show the validity of the LRMD simulation method further. Finally, a discussion is carried out by the principles of tribology. In the discussion, two two?dimensional full MD models are used to simulate the nanoscale sliding contact problems. The results indicate that original smaller model will induce higher equivalent scratching depth, and then results in higher friction forces, which will help to explain the mechanism how the LRMD simulation method works. This method can be used to reduce the scale of MD model in large scale simulations, and it will enhance the computational e ciency without losing accuracy during the simula?tion of nanoscale sliding contacts.

关键词： Local region molecular dynamics simulation Nanoscale Sliding contacts Contribution of displacement

Application of homogenization techniques for inflow transport approximation on light water reactor analysis

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Nuclear Science and Techniques 2022年第1期33卷 67-80页

作者： Xiang Xiao Kan Wang tong-rui Yang Yi-Xue Chen Department of Engineering Physics Tsinghua UniversityBeijing 100084China State Power Investment Corporation Research Institute Co.LtdBeijing 100029China

The transport cross-section based on inflow transport approximation can significantly improve the accuracy of light water reactor(LWR)analysis,especially for the treatment of the anisotropic scattering *** previous inflow transport approximation is based on the moderator cross-section and normalized fission source,which is approximated using transport *** the accuracy of reactivity is increased,the P0 flux moment has a large error in the Monte Carlo *** this study,an improved inflow transport approximation was introduced with homogenization techniques,applying the homogenized cross-section and accurate fission *** numerical results indicated that the improved inflow transport approximation can increase the P0 flux moment accuracy and maintain the reactivity calculation precision with the previous inflow transport approximation in typical LWR *** addition to this investigation,the improved inflow transport approximation is related to the temperature *** improved inflow transport approximation is flexible and accurate in the treatment of the anisotropic scattering effect,which can be directly used in the temperature-dependent nuclear data library.

关键词： Inflow transport approximation Anisotropic scattering effect Homogenization techniques Light water reactor

Optimizing Culture System of Ri T-DNA Transformed Roots for Citrus grandis cv. Changshou Shatian You

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Agricultural Sciences in China 2006年第2期5卷 90-97页

作者： YANG Xiao-hong SUN Zhong-hai tong rui-jian Institute of Citrus Huazhong Agricultural University Wuhan 430007 P.R.China College of Horticulture and Landscape Architecture Southwest University Chongqing 400716 P.R. China

Genetic transformation experiments of the different explants from Citrus grandis cv. Changshou Shatian You infected with Agrobacterium rhizogenes were carried out in darkness or in light. The optimizing culture system of Ri T-DNA transformed roots for C. grandis cv. Changshou Shatian You was constructed as follows： After the ventral wounded striations on the single activation cotyledon were inoculated by A. rhizogenes A4 （logarithmic period）, they were cocultured at （25 ±2）℃ in darkness for 25-30 days; some transformed roots were generated from wounded striations of most cotyledons. The genetically transformed ratio is （83 ± 11）%. Axenic Ri T-DNA transformed roots （hairy roots） were harvested after five subcultures. Explants were activated on MT medium. The MS medium was used for subculture of transformed roots. Mass Ri T-DNA transformed roots in which the hormone was produced independently were harvested from this optimizing culture system. White, fresh Ri T-DNA transformed roots were （1.14 ±0.07） cm long, （0.73 ±0.04） mm wide, and the growth direction of transformed roots was negative geotropism.

关键词： Citrus grandis cv. Changshou Shatian You Agrobacterium rhizogenes Ri T-DNA transformed root optimizingculture system

Fault diagnosis of electric transformers based on infrared image processing and semi-supervised learning

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Global Energy Interconnection 2021年第6期4卷 596-607页

作者： Jian Fang Fan Yang rui tong Qin Yu Xiaofeng Dai Key Laboratory of Middle-low Voltage Electric Equipment Inspection and Testing of China Southern Power Grid Co. LtdGuangzhou 510620P.R.China Guangzhou Power Supply Bureau of Guangdong Power Grid Co. LtdGuangzhou 510620P.R.China

It is crucial to maintain the safe and stable operation of distribution transformers,which constitute a key part of power *** the event of transformer failure,the fault type must be diagnosed in a timely and accurate *** this end,a transformer fault diagnosis method based on infrared image processing and semi-supervised learning is proposed ***,we perform feature extraction on the collected infrared-image data to extract temperature,texture,and shape features as the model reference ***,a generative adversarial network(GAN)is constructed to generate synthetic samples for the minority subset of labelled *** proposed method can learn information from unlabeled sample data,unlike conventional supervised learning ***,a semi-supervised graph model is trained on the entire dataset,i.e.,both labeled and unlabeled ***,we test the proposed model on an actual dataset collected from a Chinese electricity *** experimental results show that the use of feature extraction,sample generation,and semi-supervised learning model can improve the accuracy of transformer fault *** verifies the effectiveness of the proposed method.

关键词： Transformer Fault diagnosis Infrared image Generative adversarial network Semi-supervised learning

Underlying IgM heavy chain amyloidosis in treatment-refractory IgA nephropathy: A case report

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World Journal of Clinical Cases 2019年第19期7卷 3055-3061页

作者： Hai-Ting Wu Yu-Bing Wen Wei Ye Bing-Yan Liu Kai-Ni Shen rui-tong Gao Ming-Xi Li Department of Nephrology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Department of Hematology Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China

BACKGROUND Monoclonal immunoglobulin can cause renal damage,with a wide spectrum of pathological changes and clinical manifestations without hematological evidence of *** disorders can be missed,especially when combined with other kidney *** SUMMARY A 61-year-old woman presented with moderate proteinuria with normal renal *** was diagnosed with IgA nephropathy combined with monoclonal gammopathy of undetermined significance after the first renal *** having received immunosuppressive treatment for 3 years,the patient developed nephrotic *** renal biopsy and laser microdissection/mass spectrometry analysis confirmed heavy chain *** nine cycles of bortezomib,cyclophosphamide and dexamethasone,she achieved very good partial hematological and kidney *** Renal injury should be monitored closely in monoclonal gammopathy patients without obvious hematological malignancy,especially in patients with other preexisting renal diseases.

关键词： Monoclonal gammopathy IgA nephropathy Renal biopsy Laser microdissection/mass spectrometry Case report

Comparsion of the Effects of Succinate and NADH on Postmortem Metmyoglobin Redcutase Activity and Beef Colour Stability

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Journal of Integrative Agriculture 2014年第8期13卷 1817-1826页

作者： GAO Xiao-guang WANG Zhen-yu TANG Meng-tian MA Chang-wei DAI rui-tong College of Food Science and Nutritional Engineering China Agricultural University College of Biological Science and Engineering Hebei University of Science and Technology Institute of Agro-Products Processing Science and Technology Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Products ProcessingMinistry of Agriculture

In two experiments, the effects of succinate and NADH（reduced nicotinamide adenine dinucleotide） on metmyoglobin reductase activity and electron transport chain-linked metmyoglobin reduction were investigated and compared. In experiment 1, metmyoglobin（MetMb）, substrate and inhibitors were incubated with mitochondria. Comparsion of the effects of succinate and NADH on MetMb reduction was investigated. The MetMb percentage in sample treated with 8 mol L-1 succinate decreased by about 69% after 3 h incubation, and the effect was inhibited by the addition of 10 mol L-1 electron transfer chain complex II inhibitor malonic acid; the MetMb percentage in samples treated with 2 mol L-1 NADH decreased by 56% and the effect was inhibited by the addition of 0.02 mol L-1 electron transport chain complex I inhibitor rotenone. These results indicated that electron transport chain played an important role in MetMb reduction. Both complex II and complex I take part in the MetMb reduction in mitochondria through different pathways. NADH-MetMb reduction system was less stable than succinateMetMb system. In experiment 2, the beef longissimus dorsi muscle was blended with different concentrations of succinate or NADH. Enhancing patties with higher concentration of succinate or NADH improved colour stability in vacuum packaged samples（P〈0.05）. These results verified that mitochondria electron transport chain is related to the MetMb reduction in meat system.

关键词： succinate NADH malonic acid rotenone metmyoglobin electron transport chain

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基于综合集成方法论的产业技术路线图研究

科技进步与对策 2012年第1期29卷 69-73页

作者：佟瑞暨南大学管理学院广东广州510632

提出产业技术路线图是一个开放的复杂巨系统,应当用综合集成方法去解释技术路线图绘制过程的共识涌现现象。阐明了产业技术路线图绘制过程就是一个复杂系统建模过程,把产业技术路线图研讨会看成综合集成研讨厅体系,因此应当运用钱学森... 详细信息

提出产业技术路线图是一个开放的复杂巨系统,应当用综合集成方法去解释技术路线图绘制过程的共识涌现现象。阐明了产业技术路线图绘制过程就是一个复杂系统建模过程,把产业技术路线图研讨会看成综合集成研讨厅体系,因此应当运用钱学森提出的处理开放复杂巨系统的方法——从定性到定量的综合集成方法。最后建立了产业技术路线图共识系统涌现模型。

关键词：产业技术路线图综合集成方法论

一种考虑保护重要性差异的最小断点集选取方案

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天津大学学报（自然科学与工程技术版） 2013年第8期46卷 713-718页

作者：张艳霞童锐天津大学智能电网教育部重点实验室天津300072

针对复杂环网整定过程中,处于同一环路中的保护容易出现相互等待、不能继续整定的"死锁"情况,提出了一种基于粒子群算法(PSO)的最小断点集MBPS求取方案.该方案考虑了保护间的重要性差异,研究了一种基于电气介数的保护重要性评估方法;为... 详细信息

针对复杂环网整定过程中,处于同一环路中的保护容易出现相互等待、不能继续整定的"死锁"情况,提出了一种基于粒子群算法(PSO)的最小断点集MBPS求取方案.该方案考虑了保护间的重要性差异,研究了一种基于电气介数的保护重要性评估方法;为了降低MBPS对保护整定的影响,设计了新的目标函数并基于PSO实现,以保证MBPS基数最小而且重要性最低,为求取全局最优或接近最优的MBPS提供了一种新思路.算例仿真结果表明,新方法能有效地克服同基多组MBPS问题.

关键词：最小断点集粒子群算法电气介数保护重要性差异保护重要性评估

Catalytic performance of Fe_3O_4-CoO/Al_2O_3 catalyst in ozonation of 2-(2,4-dichlorophenoxy) propionic acid,nitrobenzene and oxalic acid in water

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Journal of Environmental Sciences 2010年第10期22卷 1623-1628页

作者： Shaoping tong,rui Shi,Hua Zhang,Chunan Ma College of Chemical Engineering and Materials Science,State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,Zhejiang University of Technology,Hangzhou 310032,China College of Chemical Engineering and Materials Science State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Zhejiang University of Technology Hangzhou 310032 China

Fe3O4-CoO/Al2O3 catalyst was prepared by incipient wetness impregnation using Fe（NO3）3.9H2O and Co（NO3）2.6H2O as the precursors, and its catalytic performance was investigated in ozonation of 2-（2,4-dichlorophenoxy）propionic acid （2,4-DP）, nitrobenzene and oxalic acid. The experimental results indicated that Fe3O4-CoO/Al2O3 catalyst enabled an interesting improvement of ozonation efficiency during the degradation of each organic pollutant, and the Fe3O4-CoO/Al2O3 catalytic ozonation system followed a radical-type mechanism. The kinetics of ozonation alone and Fe3O4-CoO/Al2O3 catalytic ozonation of three organic pollutants in aqueous solution were discussed under the mere consideration of direct ozone reaction and OH radical reaction to well investigate its performance. In the catalytic ozonation of 2,4-DP, the apparent reaction rate constants （k） were determined to be 1.456 × 10^-2 min-1 for ozonation alone and 4.740 × 10^-2 min^-1 for O3/Fe3O4-CoO/Al2O3. And O3/Fe3O4-CoO/Al2O3 had a larger Rot （6.614 × 10^-9） calculated by the relative method than O3 did （1.800 x 10-9）, showing O3/Fe3O4-CoO/Al2O3 generated more hydroxyl radical. Similar results were also obtained in the catalytic ozonation of nitrobenzene and oxalic acid. The above results demonstrated that the catalytic performance of Fe3O4-CoO/Al2O3 in ozonation of studied organic substance was universal to a certain degree.

关键词： catalytic ozonation Fe3O4-CoO/Al2O3 2,4-DP nitrobenzene oxalic acid kinetics