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A 2.5-dimensional Analytical Model of Cold Leveling for Plates with Transverse Wave Defects

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Journal of Iron and Steel Research International 2015年第8期22卷 664-671页

作者： Wei-hua CHEN Juan LIU zhen-shan CUI Ying-jie WANG Ying-rui WANG National Die & Mold CAD Engineering Research Center Shanghai Jiaotong University Baosteel Co. Ltd.

Waves occurring in cold-rolled plates or sheets can be divided into longitudinal and transverse waves. Classical leveling theories merely solve the problem of longitudinal waves, while no well accepted method can be employed for transverse waves. In order to investigate the essential deformation law of leveling for plates with transverse waves, a 2.5-dimensional （2.5- D） analytical approach was proposed. In this model, the plate was transversely divided into some strips with equal width; the strips are considered to be in the state of plane strain and each group of adjacent strips are assumed to be deformation compatible under stress. After calculation, the bending deformation of each strip and the leveling effect of overall plate were obtained by comprehensNe consideration of various strips along with the width. Bending of roller is a main approach to eliminate the transverse waves, which is widely accepted by the industry, but the essential effect of bending of roller on the deformation of plates and the calculation of bending of roller are unknown. According to the 2.5-D analytical model, it can be found that, for plates, it is neutral plane offsetting and middle plane elongation or contraction under inner stress that can effectively improve plate shape. Taking double side waves as an example, the appropriate values of bending of roller were obtained by the 2.5-D analytical model related to different initial unevenness, which was applicable to the current on-line adjusting of bending of roller in rolling industry.

关键词： plate leveling 2.5-dimensional analytical model transverse wave middle plane deformation

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

Value of optical coherence tomography measurement of macular thickness and optic disc parameters for glaucoma screening in patients with high myopia

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World Journal of Clinical Cases 2023年第14期11卷 3187-3194页

作者： hua Mu rui-Shu Li zhen Yin Zhuo-Lei Feng Department of Ophthalmology The First Affiliated Hospital of Harbin Medical UniversityHarbin 150001Heilongjiang ProvinceChina

BACKGROUND The basic method of glaucoma diagnosis is visual field examination,however,in patients with high myopia,the diagnosis of glaucoma is *** To explore the value of optical coherence tomography(OCT)for measuring optic disc parameters and macular thickness as a screening tool for glaucoma in patients with high *** Visual values(contrast sensitivity,color vision,and best-corrected visual acuity)in three groups,patients with high myopia in Group A,patients with high myopia and glaucoma in Group B,and patients with high myopia suspicious for glaucoma in Group C,were *** disc parameters,retinal nerve fiber layer(RNFL)thickness,and ganglion cell layer(GCC)thickness were measured using OCT technology and used to compare the peri-optic disc vascular density of the patients and generate receiver operator characteristic(ROC)test performance curves of the RNFL and GCC for high myopia and *** Of a total of 98 patients admitted to our hospital from May 2018 to March 2022,totaling 196 eyes in the study,30 patients with 60 eyes were included in Group A,33 patients with 66 eyes were included in Group B,and 35 patients with 70 eyes were included in Group *** were processed for Groups A and B to analyze the efficacy of RNFL and GCC measures in distinguishing high myopia from high myopia with *** area under the ROC curve was greater than 0.7,indicating an acceptable diagnostic *** The value of OCT measurement of RNFL and GCC thickness in diagnosing glaucoma in patients with high myopia and suspected glaucoma is worthy of development for clinical use.

关键词： High myopia suspected glaucoma Optical coherence tomography Retinal nerve fiber layer thickness Ganglion cell layer thickness Diagnostic efficacy

Time-domain training sequences design for MIMO OFDM channel estimation

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第4期9卷 464-469页

作者： zhen LU Jian-hua GE Department of Electronic Engineering Shanghai Jiao Tong Universiry Shanghai 200240 China Department of Communications Engineering Xidian University Xi＇an 710071 China

This paper describes a Least Squares (LS) channel estimation scheme for MIMO OFDM systems based on time-domain training sequence. We first compute the minimum mean square error (MSE) of the LS channel estimation, and then derive the optimal criteria of the training sequence with respect to the minimum MSE. It is shown that optimal time-domain training sequence should satisfy two criteria. First, the autocorrelation of the sequence transmitted from the same antenna is an impulse function in a region longer than the channel maximum delay. Second, the cross-correlation between sequences transmitted from different antennas is zero in this region. Simulation results show that the estimator using optimal time-domain training sequences has better performance than that using optimal frequency training sequence at low signal-to-noise ratio (SNR). To reduce the training overhead, a suboptimal training sequence is also proposed. Comparing with optimal training sequence, it has low computation complexity and high transmission efficiency at the expense of little performance degradation.

关键词： MIMO OFDM Channel estimation Time-domain training sequence

Comparative quantification of human intestinal bacteria based on cPCR and LDR/LCR

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World Journal of Gastroenterology 2012年第3期18卷 268-274页

作者： Zhou-rui Tang Kai Li Yu-Xun Zhou zhen-Xian Xiao Jun-hua Xiao rui huang Guo-Hao Gu College of Chemistry Chemical Engineering and Biotechnology Donghua University Shanghai 201620 China State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shang hai 200237 China Department of Pre-Clinical Medicine School Soochow University Suzhou 215123 Jiangsu Prov ince China

AIM: To establish a multiple detection method based on comparative polymerase chain reaction (cPCR) and ligase detection reaction (LDR)/ligase chain reaction (LCR) to quantify the intestinal bacterial components. METHODS: Comparative quantification of 16S rDNAs from different intestinal bacterial components was used to quantify multiple intestinal bacteria. The 16S rDNAs of different bacteria were amplified simultaneously by cPCR. The LDR/LCR was examined to actualize the genotyping and quantification. Two beneficial (Bifidobacterium , Lactobacillus ) and three conditionally pathogenic bacteria (Enterococcus , Enterobacterium and Eubacterium ) were used in this detection. With cloned standard bacterial 16S rDNAs, standard curves were prepared to validate the quantitative relations between the ratio of original concentrations of two templates and the ratio ofthe fluorescence signals of their final ligation products. The internal controls were added to monitor the whole detection flow. The quantity ratio between two bacteria was tested. RESULTS: cPCR and LDR revealed obvious linear correlations with standard DNAs, but cPCR and LCR did not. In the sample test, the distributions of the quantity ratio between each two bacterial species were obtained. There were significant differences among these distributions in the total samples. But these distributions of quantity ratio of each two bacteria remained stable among groups divided by age or sex. CONCLUSION: The detection method in this study can be used to conduct multiple intestinal bacteria genotyping and quantification, and to monitor the human intestinal health status as well.

关键词： 16s rDNA Comparative quantification Com- parative polymerase chain reaction Intestinal bacteria Ligase chain reaction Ligase detection reaction

Strategies for Activating Blood Circulation-Regulating Gan(Liver)-Tonifying Shen(Kidney) Sequential Therapy of Endometriosis-Associated Infertility

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Chinese Journal of Integrative Medicine 2019年第4期25卷 243-245页

作者： ZHAO rui-hua Department of Gynecology Guang'anmen HospitalChina Academy of Chinese Medical Sciences

Endometriosis(EM) is a major cause of infertility and has a complex pathogenesis,which brings severe challenges in both clinical treatment and scientific *** clinical research focuses on the difficult problem of improving the pregnancy rate of EM *** studies found that Chinese medicine has significant advantages in terms of improving the pregnancy rate of EM patients.

关键词： endometriosis infertility promoting blood circulation-regulating Gan(Liver)-tonifying Shen(Kidney) sequential therapy

High temperature oxidation behavior of Ni-based superalloy GH586 in air

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Rare Metals 2017年第11期36卷 878-885页

作者： Jiang-Dong Cao Jun-Song Zhang Yin-Qun hua zhen Rong rui-Fang Chen Yun-Xia Ye School of Material Science and Engineering Jiangsu UniversityZhenjiang 212013 China Mechanical and Electrical Department Nantong Shipping College Nantong 226010 China School of Mechanical Engineering Jiangsu UniversityZhenj iang 212013 China

In this paper, the isothermal oxidation kinetics and oxidation behavior of GH586 superalloy from 800 to 1000℃ were investigated. The oxide scale morphologies of the surfaces and the cross sections after oxidation were characterized by means of X-ray diffraction （XRD） and scanning electron microscope （SEM） equipped with energy-dispersive spectroscopy （EDS）. The results show that the growth of the oxide scales on the surface of superalloy GH586 obeys a parabolic law with the activa- tion energy of 241.4 ***1-1 from 800 to 1000℃ The dense oxide scale formed at 800℃ is mainly composed of Cr203, NiCr204 and a small amount of TiO2. At 900℃, the oxide scale is divided into two layers： the outer layer with multiple cracks is mainly composed of ＂Cr203 and TiO2, while the inner is a layer of dense Cr203. Under the oxide scale, aluminum-rich oxides along the grain bound- aries are generated by the internal oxidation. At 1000 ℃for 100 h, cracks throughout the whole oxide film accel- erate the oxidation rate of Ni-based superalloy GH586 and large blocks of TiO2 in the oxide scale are generated, resulting in the spallation of oxide scale.

关键词： Ni-based superalloy Internal oxidation Hightemperature oxidation behavior Oxidation kinetics

Adaptive Control for a Class of Nonlinear Time-Delay System Based on the Fully Actuated System Approaches

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Journal of Systems Science & Complexity 2022年第2期35卷 522-534页

作者： NING Pengju hua Changchun MENG rui School of Electrical Engineering Yanshan UniversityQinhuangdao 066004China

This paper focuses on the problem of adaptive control for a class of time-delay ***,the strict feedback nonlinear time-delay system is transformed into a fully actuated system by utilizing the fully actuated system ***,the uncertain time-delay terms of the system are bounded by the product of the absolute value of the system state and the non-linear function with the unknown *** following the high order fully actuated system approaches,a continuous adaptive controller is designed for the *** is proved that the controller can render the system achieve asymptotically ***,two numerical examples are provided to illustrate the effectiveness of the theoretical results.

关键词： Adaptive control fully actuated system approaches nonlinear systems time-delay systems

Exploration of the mechanisms of Ge Gen Decoction against influenza A virus infection

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Chinese Journal of Natural Medicines 2019年第9期17卷 650-662页

作者： GENG Zi-Kai LI Ya-Qun CUI Qing-hua DU rui-Kun TIAN Jing-zhen School of Pharmacy Shandong University of Traditional Chinese MedicineJinan 250355China. Collaborative Innovation Center for Antiviral Traditional Chinese Medicine Jinan 250355China

Ge Gen Decoction(GGD),a Traditional Chinese Medicine prescription,is mainly used to treat infectious respiratory diseases and can relieve the symptoms of influenza A virus(IAV)***,the underlying mechanism of GGD against IAV infection remains *** this study,we found that GGD had moderate anti-IAV activity in *** was more effective when given before the viral infection and targeted the viral attachment and replication stages rather than the internalization sta *** vivo,GGD treatment reduced the virus titers of lung tissue significantly and improved the survival rate,lung index,and pulmonary hist opathological changes in H1N1-infected *** observed the changes in several key immuno-related indexes in GGD administrated H1N1-infected mice with anti-IAV drug oseltamivir phosphate as the *** treatment decreased the expression of TNF-αand improved Th1/Th2 immune balance to reduce the excessive immune response in H1N1-infected ***,the expression of the toll-like receptor 7 signaling pathway in H1N1-infected mice decreased after GGD *** results showed that GGD has anti-IAV activity and can modulate the immune system to relieve lung inflammation.

关键词： Ge Gen Decoction Traditional Chinese Medicine(TCM) H1N1 Antiviral Immune regulation