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Topological Charge Conversion with Spiral-Slit Screens

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Chinese Physics Letters 2013年第10期30卷 108-111页

作者： LI Zhen-Hua ZHANG Mei-Na LI Xing liu chun-xiang CHENG Chuan-Fu College of Physics and Electronics Shandong Normal UniversityJinan 250014

We propose a method of converting the topological charge(TC)of an incident vortex light wave with spiral-slit *** phase in the incident vortex beam is redistributed via the optical path adjustment realized by changing the in-plane radial distance of the spiral *** numerically calculate the light field with Fresnel diffraction theory,and find the expected TC conversion on the observation *** calculations also show that screens of pinholes distributed in a spiral curve can be used for the implementation instead of spiral *** method can also be used to distinguish the TCs of the incident vortices by reading the diffracted intensity patterns.

关键词： incident vortex topological

Measurement of Random Surface Parameters by Angle-Resolved In-plane Light Scattering with Constant Perpendicular Wave Vector

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Chinese Physics Letters 2011年第2期28卷 105-108页

作者： LI Hai-Xia liu chun-xiang CHEN Xiao-Yi ZHANG Mei-Na CHENG Chuan-Fu College of Physics and Electronics Shandong Normal UniversityJinan 250014 Department of Information Science and Technology Shandong University of Politics Science and LawJinan 250014

We report the experimental method of angle-resolved in-plane light scattering for random surface parameter *** the measurement of the scattered intensity profile at a certain angle of incidence,the perpendicular component of wave vector remains constant,which is realized by controlling the movement of the detector along a specified circular arc *** use the central S-peak and the half-width of the diffused intensity profiles and their variations to obtain the roughness w,the lateral correlation lengthξand roughness exponent a of the rough surface *** measurement copes strictly with the theoretical analysis,and the inherent problem in previous in-plane light scattering experiment is overcome so that the changes of the perpendicular component of wave vector affect the half width a diffused intensity profile and the measurement accuracy.

关键词： plane roughness overcome

The Multi-Scale and the Multi-Fractality Properties of Speckles on Rough Screen Surfaces

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Chinese Physics Letters 2013年第4期30卷 105-109页

作者： ZHANG Mei-Na LI Zhen-Hua CHEN Xiao-Yi liu chun-xiang TENG Shu-Yun CHENG Chuan-Fu College of Physics and Electronics Shandong Normal UniversityJinan 250014 School of Physics and Technology University of JinanJinan 250022

With a microscopic imaging system composed of microscopic objective,lens and CCD,we observe the complicated structures in the speckle fields on the surface of a rough *** is found that such structures contain ridge stripes,large platform-like grains,and shivy grains,exhibiting multiple scales in size and multiple *** shows these structures are formed by different parts of the rough *** experimental curve of the autocorrelation function of the speckle intensity includes the three parts of the central peak,the transition part and the long tail *** the sum of self-affine fractal models with different scales and fractalities,we propose theoretically a triple-scale autocorrelation function to describe the speckle *** of this autocorrelation function to the experimental curve gives the values of such parameters as average speckle sizes and fractalities in different scales of the speckle structures.

关键词： surface. field. speckle

Effect of Environment and Genetic Recombination on Subspecies and Economic Trait Differentiation in the F_2 and F_3 Generations from indicajaponica Hybridization

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Journal of Integrative Agriculture 2014年第1期13卷 18-30页

作者： WANG He-tong JIN Feng JIANG Yi-jun LIN Qing-shan XU Hai CHENG Ling XIA Ying-jun liu chun-xiang CHEN Wen-fu XU Zheng-jin Rice Research Institute Shenyang Agricultural University Rice Research Institute Guangdong Academy of Agricultural Sciences Agricultural Technology Extension Station Department of Agriculture of Guangdong Province

indica and japonica are the two most important subspecies of Asian cultivated rice. Identifying mechanisms responsible for population differentiation in these subspecies is important for indica-japonica hybridization breeding. In this study, subspecies and economic trait differentiation patterns were analyzed using morphological and molecular （InDel and Intron Length Polymorphism） data in F2 and F3 populations derived from indica-japonica hybridization. Populations were grown in Liaoning and Guangdong provinces, China, with F3 populations generated from F2 populations using bulk harvesting （BM） and single-seed descent methods （SSD）. Segregation distortion was detected in F3-BM populations, but not in F3- SSD or in F2 populations. Superior performance was observed with respect to economic traits in Liaoning compared with that in Guangdong and 1 000-grain weight （KW）, seed setting rate （SSR） and grain yield per plant （GYP） were significantly correlated with indica and japonica subspecies types. Analysis of molecular and morphological data demonstrated that the environment is the main factor giving rise to population differentiation in indica-japonica hybridization. In addition, we also found that KW, SSR and GYP are related to subspecies characteristics and kinship, which is possibly a significant factor resulting in economic trait differentiation and determining environmental adaptability. Our study has provided new insights into the process of population differentiation in these subspecies to inform indica-japonica hybridization breeding.

关键词： indica-japonica hybridization subspecies differentiation environment economic traits recombinant inbred line,rice

Relationship Between Serum DNA Replication, Clinicopathological Characteristics and Prognosis of Hepatitis B Virus-associated Glomerulonephritis with Severe Proteinuria by Lamivudine Plus Adefovir Dipivoxil Combination Therapy

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Biomedical and Environmental Sciences 2015年第3期28卷 206-213页

作者： JIANG Wei liu Tuo DONG Hui XU Yan liu Li Qiu GUAN Guang Ju liu xiang chun Department of Nephrology The Affiliated Hospital of Qingdao University National Institute of Occupational Health and Poison Control Chinese Center for Disease Control and Prevention Department of Nephrology The Second Hospital of Shandong University

Objective To explore the relationship between HBV DNA and the clinical manifestations, pathological types, injury severity, and prognosis with HBV-GN. Methods 102 patients with HBV-GN were divided into 3 groups, according to the serum titer of the HBV DNA. 24-h urine protein excretion, and other parameters were measured. Renal biopsy were performed. The association between HBV DNA and the pathological stage of membranous nephropathy was analyzed in 78 patients with HBV-MN. 24-h urine protein excretion was used for the evaluation of the prognosis, and the relationship between HBV DNA and prognosis were analyzed. Results Several findings were demonstrated with the increase of serum HBV DNA： 24-h urine protein excretion, plasma cholesterol, and triglycerides increased significantly（P〈0.05）, while the plasma level of albumin decreased significantly（P〈0.05）; The changes of serum creatinine, C3 and C4 were found but no statistical significance. Glomerular deposition of HBVAg increased, and the pathological injury was more severe. The clinical remission rate was lower in the high replication group after treatment as compared with the low replication group（P〈0.01）. Conclusion With the increase of serum HBV DNA, the urine protein excretion and the kidney injury were more severe, and the clinical remission rate was decreased.

关键词： Hepatitis B virus Nephritis Pathology Proteinuria Lamivudine Adefovir dipivoxil

ZMT3/NZC“三明治”叠层结构低温共烧研究

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无机材料学报 2008年第6期23卷 1287-1292页

作者：刘向春田长生西安科技大学材料科学与工程系西安710054 西北工业大学材料学院西安710072

采用湿法拉膜成型工艺,以收缩率大的(Zn_(0.7)Mg_(0.3))TiO_3(简称ZMT3)材料作为夹层材料,以收缩率相对小的铁氧体材料(Ni_(0.8)Zn_(0.12)Cu_(0.12))Fe_(1.96)O_4(简称NZC)作为两边收缩控制层,获得"三明治"叠层结构.以独特的零收缩差技... 详细信息

采用湿法拉膜成型工艺,以收缩率大的(Zn_(0.7)Mg_(0.3))TiO_3(简称ZMT3)材料作为夹层材料,以收缩率相对小的铁氧体材料(Ni_(0.8)Zn_(0.12)Cu_(0.12))Fe_(1.96)O_4(简称NZC)作为两边收缩控制层,获得"三明治"叠层结构.以独特的零收缩差技术,制备了界面结合紧密,无翘曲变形、开裂等缺陷,可于900℃烧结的"三明治"结构叠层共烧体,其最佳介电性能为:ε_r=12,tanδ=9.84×10^(-4).这项新技术的提出,为解决异种材料共烧时所经常产生的翘曲、变形等缺陷提供了一种新的解决思路.

关键词：陶瓷叠层共烧翘曲缺陷三明治结构复合材料

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军船入级的意义与展望

中国造船 2007年第4期48卷 112-118页

作者：刘相春哈尔滨工程大学船舶工程学院黑龙江哈尔滨150001

从回顾民船和军船的发展简史开始,介绍民船入级的意义,传统的军船设计内部标准,现今国际社会军船入级的现状;通过分析军船入级的意义,军船入级过程中须要解决的几个关键问题,提出了我国军船入级的展望及建议。

关键词：船舶舰船工程入级设计标准建造

Study on the application of spectral fatigue analysis

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Journal of Marine Science and Application 2006年第2期5卷 42-46页

作者： liu xiang-chun FENG Guo-qing REN Hui-long College of Shipbuilding Engineering Harbin Engineering University Harbin 150001 China

Fatigue failure has long been an important issue for ships and offshore structures. Among the numerous methods for predicting fatigue life, the spectral method is accepted as the most reliable. Although the theory behind spectral analysis is straight-forward, the analysis itself is complicated and time-consuming because it is closely related to critical technical details such as the application of fatigue loading (wave pressures and the inertial forces due to cargoes), the extraction of the stress, and the calculation of stress RAO. Here, four key technical details-loading application, displacement boundary condition, the calculation of stress RAO, and the extraction of the fatigue stress-are discussed thoroughly. For each aspect, a resolution is presented based on the finite element pre-and post-processing software MSC/PATRAN or FE solver MSC/NASTRAN. The resolutions are effective and efficient, which can help engineers perform spectral fatigue analysis accurately and faster.

关键词： spectral fatigue analysis load application BC stress RAO stress extraction

熔盐热法制备ZnWO_4纳米晶及其光催化性能

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人工晶体学报 2018年第10期47卷 2035-2043页

作者：闫文刘向春西安科技大学材料科学与工程学院西安710054

以Na_2WO_4·2H_2O,Zn(NO_3)_2·6H_2O为原料,LiNO_3,NaNO_3为熔盐介质,采用熔盐热法合成了ZnWO_4纳米晶材料,对其相结构和纳米晶生长动力学进行了表征,对比传统水热法,研究了熔盐热剂与水溶剂两种介质类型对纳米晶形貌和光催化活性的... 详细信息

以Na_2WO_4·2H_2O,Zn(NO_3)_2·6H_2O为原料,LiNO_3,NaNO_3为熔盐介质,采用熔盐热法合成了ZnWO_4纳米晶材料,对其相结构和纳米晶生长动力学进行了表征,对比传统水热法,研究了熔盐热剂与水溶剂两种介质类型对纳米晶形貌和光催化活性的影响。结果表明,晶体生长介质对ZnWO_4纳米晶形貌会产生重要影响。采用熔盐热法在反应温度为180℃,保温时间为8 h条件下合成了形貌规则,分布均匀的四方板块层状等轴ZnWO_4纳米粉体,晶粒尺寸在20～40 nm之间;在相同反应条件下,水热合成的纳米晶为棒状结构,其直径约25 nm,长度在100～200nm之间; ZnWO_4纳米晶的晶体完整度和晶体形貌对其光催化活性会产生重要影响,晶体发育完整的ZnWO_4纳米晶具有更高的活性;在晶体发育完整的前提下,粉体的比表面积越大,相应的光催化活性也越高。

关键词： ZnWO4 熔盐热法光催化水热法动力学