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Equilateral pentagon polarization maintaining photonic crystal fibre with low nonlinearity

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Chinese Physics B 2012年第2期21卷 357-361页

作者： Yang Han-Rui li xu-you Hong Wei Hao Jin-Hui Automation College Harbin Engineering UniversityHarbin 150001China

A new pentagon polarization maintaining photonic crystal fibre with low nonlinearity is introduced. The full vector finite element method was used to investigate the distribution and the effective area of modal field, the nonlinear properties, the effective indices of two orthogonal polarization modes and the birefringence of the new PM-PCF effectively. It is found that the birefringence of the new polarization maintaining photonic crystal fibre can easily achieve the order of 10-4, and it can obtain higher birefringence, larger effectively mode-field area and lower nonlinearity than traditional hexagonal polarization maintaining photonic crystal fibre with the same hole pitch, same hole diameter, and same ring number. It is important for sensing and communication applications, especially has potential application for fibre optical gyroscope.

关键词： photonic crystal fibres fibre optical gyroscope birefringence nonlinearity

Metachronous contralateral testicular and bilateral adrenal metastasis of chromophobe renal cell carcinoma:a case report and review of the literature

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第5期11卷 386-389页

作者： Hai-yang WU li-wei xu you-yun ZHANG Yan-lan YU Xin-de li Gong-hui li Department of Urology Sir Run Run Shaw Hospital School of Medicine Zhejiang University Hangzhou 310016 China

Chromophobe renal cell carcinoma(ChRCC) metastatic to the testis has not,to the best of our knowledge,been reported in the *** have there been reports of delayed bilateral adrenal metastasis of *** we report a case of metachronous contralateral testicular and bilateral adrenal metastasis of ChRCC in a 70-year-old man who underwent right radical nephrectomy for RCC six years *** was admitted to the hospital because of left intrascrotal enlargement of two-month *** revealed a mass in the upper pole of the left *** tomography(CT) showed irregular masses in the bilateral adrenal *** radical orchiectomy and laparoscopic bilateral adrenalectomy were *** pathologic examination showed metastatic ChRCC in the left testis and bilateral adrenal *** follow-up showed that the patient had survived for at least 56 months without *** case highlights the unique behavior of RCC with an unusual site of metastasis and favorable survival after multiple metastasectomy.

关键词： Renal cell carcinoma(RCC) Testicular metastasis Adrenal metastasis Metastasectomy

Reverse electric field Monte Carlo simulation for vector radiative transfer in the atmosphere

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Chinese Physics B 2014年第6期23卷 315-321页

作者：李绪友孙波于莹莹 College of Automation Harbin Engineering University

In this paper, a reverse electric field Monte Carlo （REMC） method is proposed to study the vector radiation transfer in the atmosphere. The REMC is based on tracing the multiply scattered electric field to simulate the vector transmitted radiance. The reflected intensities with different total optical depth values are obtained, which accord well with the results in the previous research. Stokes vector and the degree of polarization are numerically investigated. The simulation result shows that when the solar zenith angle is determined, the zenith angle of detector has two points, of which the degree of polarization does not change with the ground albedo and the optical depth. The two points change regularly with the solar zenith angle. Moreover, our REMC method can be applied to the vector radiative transfer in the atmosphere-ocean system.

关键词： radiative transfer Monte Carlo atmosphere scattering polarization

Tagging Salt Tolerant Gene Using PCR Markers in Soybean

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Agricultural Sciences in China 2001年第1期 30-34页

作者： GUO Bei QIU li-juan SHAO Gui-hua CHANG Ru-zhen liU li-hong xu Zhan-you li Xiang-hua SUN Jian-ying Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081 Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081 Institute of Crop Breeding and Cultivation Chinese Academy of Agricultural Science Beijing 100081 Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081 Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081 Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081 Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081 Institute of Crop Germplasm Resources of Chinese Academy of Agricultural Science Key Laboratory of Crop Germplasm & Biotechnology Ministry of Agriculture Beijing 100081

The purpose of this study was to screen and identify PCR markers associated with salt tolerant gene in soybean( Glycine soja L. ) so that salt tolerance can be identified efficiently and accurately. Between these tolerant and sensitivity to salt and three crosses were tested in this experiment. By BSA method, two codominant PCR markers were identified through the salt tolerant (sensitive) cuitivars bulks and the salt tolerant (sensitive) individual bulks of a F2 population. There was a 600bp band in the sensitive individuals and a 700bp band or two 700bp/600bp bands in the tolerant individuals. The markers were closely linked with salt tolerant/sensitive alleles. Moreover the markers were tested in the other two F2 populations from "salt tolerant cultivar × sensitive cuitivar" and confirmed by 12 salt tolerance cultivars and 13 salt sensitive cultivars with different genetic background. It indicated that the markers (700bp and 600bp) could be applied in salt tolerant identification of the soybean germplasm resources, and markers-assisted selection in salt tolerant breeding of soybean. The markers, its obtained method and application were patented for invention in 1998.

关键词： Salt tolerant gene Molecular marker Patent Soybean

Aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： li xu Huiming xu Changyong Tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromyelitis optica spectrum disorders are neuroinflammatory demyelinating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromyelitis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromyelitis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly expressed on the membrane of astrocyte endfeet,most current experimental models are based on aquaporin-4-IgG that initially targets *** experimental models have successfully simulated many pathological features of neuromyelitis optica spectrum disorders,such as aquaporin-4 loss,astrocytopathy,granulocyte and macrophage infiltration,complement activation,demyelination,and neuronal loss;however,they do not fully capture the pathological process of human neuromyelitis optica spectrum *** this review,we summarize the currently known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromyelitis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromyelitis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromyelitis optica spectrum disorder pathogenesis

VORTEX SHEDDING FREQUENCY DETERMINED BY SURFACE PRESSURE FLUCTUATIONS OF THREE EQUISPACED CYliNDERS

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Journal of Hydrodynamics 1999年第4期11卷 76-85页

作者： Dong li yun, xu you heng, Huang Dong qun Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, P.R.China

In his paper, the frequency of vortex shedding from three cylinders of the same diameter in equilateral triangular arrangement is determined experimentally by the spectrum analysis of surface pressure fluctuations at a Reynolds number of 3.0×10 4. For α=0°, there exists ‘bistable’ flow at the spacing 2.0. For α=30°, the vortex shedding of the front cylinder is found at small spacing less than 2.0. It is quite different from the case of two cylinders in tandem arrangement only. The side cylinder has great effects on the flow between the other two cylinders in close arrangement. For α=60°, there exists a critical spacing of about 2.5 that the frequency of each cylinders is nearly half of f s below this spacing and equal to f s above it respectively. The interference among three cylinders was negligible in the spacing range above 3.0 at α=0 and 60 deg., and each cylinder behaves as a single cylinder with the same vortex shedding frequency f s. In these small spacing (spacinglinders.

关键词： interference among three cylinders pressure fluctuation vortex shedding frequency. wind tunnel testing

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi Jia Jinhua Zhang Kailu Guo Lanyue Zhang Gening Du Hao you Junfeng Huang Mudong Tu Hua li Yong Peng Wei Dou Cailing xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： X ray photoelectron spectroscopy

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用于高精度光纤陀螺的光纤放大器光源

红外与激光工程 2008年第4期37卷 732-734页

作者：王瑞李绪友张勇哈尔滨工程大学自动化学院

介绍了应用于光纤陀螺的掺铒光纤超荧光光源的研究现状,比较分析了掺铒光纤光源5种主要结构的优缺点,在此基础上得出了光纤放大器结构的光源既可以有效提高光纤陀螺的检测精度和稳定性,又可以降低成本。针对光纤放大器光源,分别分析了... 详细信息

介绍了应用于光纤陀螺的掺铒光纤超荧光光源的研究现状,比较分析了掺铒光纤光源5种主要结构的优缺点,在此基础上得出了光纤放大器结构的光源既可以有效提高光纤陀螺的检测精度和稳定性,又可以降低成本。针对光纤放大器光源,分别分析了泵浦功率、泵浦波长、反馈以及铒纤温度对其平均波长稳定性的影响。为了消除反馈对光纤放大器光源平均波长稳定性的影响,根据超荧光光源的偏振态效应,在光源中加入了偏振器来控制反馈的偏振态,从而降低了反馈对光源平均波长稳定性的影响,并采用长周期光纤光栅作为滤波器,有效地提高了光纤放大器光源的波长稳定性。

关键词：掺铒光纤超荧光放大器光源光纤陀螺

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布里渊光纤陀螺光纤环形腔研究

光电工程 2008年第11期35卷 111-116页

作者：李绪友张勇王瑞何周哈尔滨工程大学自动化学院哈尔滨150001

提出了一种用于布里渊光纤陀螺的光纤环形腔设计方法。在分析了布里渊光纤陀螺原理的基础上,利用琼斯矩阵光学的理论以及光纤中的受激布里渊散射理论,详细研究了布里渊光纤环形腔的特性。通过对腔内外光强的细致分析,得出布里渊光纤陀... 详细信息

提出了一种用于布里渊光纤陀螺的光纤环形腔设计方法。在分析了布里渊光纤陀螺原理的基础上,利用琼斯矩阵光学的理论以及光纤中的受激布里渊散射理论,详细研究了布里渊光纤环形腔的特性。通过对腔内外光强的细致分析,得出布里渊光纤陀螺环形腔对于腔的耦合系数及输入光强的要求。实验结果表明,该方法用于设置布里渊光纤陀螺工作点,能够保证斯托克斯光的最大传输效率,并有效抑制光路中的散粒噪声。

关键词：受激布里渊散射斯托克斯光光纤环形腔光纤陀螺