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Theoretical Calculations on Rare Earth Elements in Barium Fluoride Crystal

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Chinese Physics Letters 1995年第2期12卷 76-78页

作者： GU Mu chen lingyan DU Jie XIANG Kaihua Department of Physics Tongji UniversityShanghai 200092

In the present work we used Hartree-Fock-Slater local-density discrete variational method to calculate the energy level of some rare earth doped BaF_(2) crystals and proposed that the Eu,Dy and Yb elements will change their valence from+3 to+2 under irradiation and thus change the optical properties of the *** results show that this radiation effect model is in good agreement with experiments.

关键词： Rare Hartree Slater

Design,fabrication and characterization of the X-ray supermirrors

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Science China(Physics,Mechanics & Astronomy) 2005年第5期48卷 559-574页

作者： WANG Zhanshan WANG Fengli ZHANG Zhong chenG Xinbin QIN Shuji chen lingyan Institute of Precision Optical Engineering Department of PhysicsTongji UniversityShanghai 20092China

The design,fabrication and characterization of the X-ray supermirrors are discussed in this *** the local optimization method of simplex algorithm and the global one of simulated annealing algorithm with different initial multilayer structures,we designed the broad angular band supermirrors with different grazing incidence angle intervals at the energy of 8.0 keV(the Kαline of Cu)and the broad energetic band supermirrors with different energy intervals at fixed grazing incidence *** fabricating techniques for depositing non-periodic multilayers are also *** W/C and W/Si supermirrors are deposited on silicon substrates and characterized by a high resolution X-ray D1 diffractometer from Bede Company,*** the interface roughness and the densities of the materials as independent variables,some measured reflectivity curves are fitted using the Debye-Waller factor with interface *** experimental results show that the optical performances of the fabricated supermirrors are in agreement with the designed ones.

关键词： X-ray supermirror magnetron sputter multilayer reflectivity.

Allele-aware chromosome-scale assembly of the allopolyploid genome of hexaploid Ma bamboo(Dendrocalamus latiflorus Munro)

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Journal of Integrative Plant Biology 2022年第3期64卷 649-670页

作者： Yushan Zheng Deming Yang Jundong Rong Liguang chen Qiang Zhu Tianyou He lingyan chen Jing Ye Lili Fan Yubang Gao Hangxiao Zhang Lianfeng Gu College of Forestry Fujian Agriculture and Forestry UniversityFuzhou 350002China College of Landscape Architecture Fujian Agriculture and Forestry UniversityFuzhou 350002China Basic Forestry and Proteomics Research Center College of ForestryFujian Provincial Key Laboratory of Haixia Applied PlantSystems BiologyFujian Agriculture and Forestry UniversityFuzhou 350002China

Dendrocalamus latiflorus Munro is a woody clumping bamboo with rapid shoot *** genetic transformation and clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein 9(Cas9)gene editing techniques are available for ***,enabling reverse genetic ***,*** has the potential to be a model bamboo ***,the genome sequence of *** has remained unreported due to its polyploidy and large genome ***,we sequenced the *** genome and assembled it into three allele-aware subgenomes(AABBCC),representingthe largest genome of a major bamboo *** assembled 70 allelic chromosomes(2,737 Mb)for hexaploid *** using both singlemolecule sequencing from the Pacific Biosciences(Pac Bio)Sequel platform and chromosome conformation capture sequencing(Hi-C).Repetitive sequences comprised 52.65%of the *** *** annotated 135231 protein-coding genes in the genome based on transcriptomes from eight different *** sequencing using RNA-Seq and Pac Bio singlemolecule real-time long-read isoform sequencing revealed highly differential alternative splicing(AS)between non-abortive and abortive shoots,suggesting that AS regulates the abortion rate of bamboo *** high-quality hexaploid genome and comprehensive strand-specific transcriptome datasets for this Poaceae family member will pave the way for bamboo research using *** as a model species.

关键词： alternative splicing bamboo shoots chromosome conformation capture sequencing D.latiflorus genome assembly single-molecular sequencing

How to Choose the Right Strategies： A Treatment according to Individual Orientation of Learning Styles

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Sino-US English Teaching 2005年第4期2卷 68-69,73页

作者： lingyan Zhang Ying chen Harbin Institute of Technology

The learning strategies used by the successful language learners are not always the right ones for all language learners. The individual distinctions of personality, affective domain, cognition and behaviorism all lead to the different personal styles in language learning. Language learners must choose the strategies, which are appropriate for their styles.

关键词： learner strategy learning style individual orientation

Fabrication of the beam splitters for soft X-ray laser application

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Chinese Science Bulletin 2003年第18期48卷 1930-1933页

作者： WANG Zhanshan WU Yonggang TANG Weixing QIN Shuji chen lingyan XU Xiangdong HONG Yilin FU Shaojun ZHU Jie CUI Mingqi Institute of Precision Optical Engineering Department of PhysicsTongji UniversityShanghai 200092China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Institute of High Energy Physics Beijing 100039China

The soft X-ray interferometry is completed by the Mach-Zehnder interferometer using a soft X-ray laser, and it is also an important method to measure the electron densities of a laser-produced plasma near the critical surface. It is apparently demonstrated in this paper that the incident angle of each optical element in the soft X-ray Mach- Zehnder interferometer should be near normal incidence based on the polarized characteristics of the soft X-ray mul-tilayers, and the product of reflectivity and transmission of the beam splitter should be taken as a standard of design according to the structure of the soft X-ray Mach-Zehnder interferometer. The beam splitters used in the soft X-ray interferometry at 13.9 nm are fabricated using the ion beam sputtering. The figure error of the beam splitter has reached the nanometer magnitude, in which the product of reflectiv-ity and transmission of the beam splitter is more than 1.6%.

关键词： soft X-ray beam splitter multilayer interference.

Development of a fluorescent probe hydrolysis-insulated isothermal PCR for rapid and sensitive on-site detection of African swine fever virus

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Virologica Sinica 2022年第3期37卷 462-464页

作者： Tianli Zou Junhua Deng Xiangdong Li Shiyin Zhang lingyan chen Liying Hao Jinshan Zhuang Heng Wang Guihong Zhang Shengxiang Ge Kegong Tian Beijing Wantai Biopharmaceutical Co. LtdBeijing102206China Luoyang Putai Bio-Tech Co.Ltd Luoyang471003China National Research Center for Veterinary Medicine Luoyang471003China School of Public Health Xiamen UniversityXiamen361102China ASFV Regional Reference Laboratory in Guangzhou South China Agricultural UniversityGuangzhou510642China

Dear Editor,African swine fever virus(ASFV),the sole member of the family Asfarviridae,is the causative agent of African swine fever(ASF),a viral disease that leads to high mortality in domestic *** firstly identified in Kenya in the 1920s,ASFV has been prevalent in Africa,Europe,and Russian Federation(Sanchez et al.,2019).Recently,ASFV was introduced to Asian countries including China,Mongolia,Vietnam,Cambodia,Laos and South Korea,which lead to huge economic losses to local pig industries(Li and Tian,2018;Gaudreault and Richt,2019).The first case of ASFV in China was reported in August 2018(Zhou et al.,2018).

关键词： swine hydrolysis African

Retrieving chlorophyll content and equivalent water thickness of Moso bamboo(Phyllostachys pubescens) forests under Pantana phyllostachysae Chao-induced stress from Sentinel-2A/B images in a multiple LUTs-based PROSAIL framework

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Forest Ecosystems 2023年第2期10卷 252-267页

作者： Zhanghua Xu Anqi He Yiwei Zhang Zhenbang Hao Yifan Li Songyang Xiang Bin Li lingyan chen Hui Yu Wanling Shen Xuying Huang Xiaoyu Guo Zenglu Li College of Environment and Safety Engineering Academy of Geography and Ecological EnvironmentFuzhou UniversityFuzhou350108China Fujian Provincial Key Laboratory of Resources and Environment Monitoring&Sustainable Management and Utilization Sanming365004China Key Laboratory of Spatial Data Mining&Information Sharing Ministry of EducationThe Academy of Digital ChinaFuzhou UniversityFuzhou350108China College of Forestry Fujian Agriculture and Forestry UniversityFuzhou350002China International Institute for Earth System Science Nanjing UniversityNanjing210023China

Biochemical components of Moso bamboo(Phyllostachys pubescens)are critical to physiological and ecological processes and play an important role in the material and energy cycles of the *** coupled PROSPECT with SAIL(PROSAIL)radiative transfer model is widely used for vegetation biochemical component content ***,the presence of leaf-eating pests,such as Pantana phyllostachysae Chao(PPC),weakens the performance of the model for estimating biochemical components of Moso bamboo and thus must be ***,this study considered pest-induced stress signals associated with Sentinel-2A/B images and field data and established multiple sets of biochemical canopy reflectance look-up tables(LUTs)based on the PROSAIL framework by setting different parameter ranges according to infestation *** inversions of leaf area index(LAI),leaf chlorophyll content(LCC),and leaf equivalent water thickness(LEWT)were *** scale conversions from LCC to canopy chlorophyll content(CCC)and LEWT to canopy equivalent water thickness(CEWT)were *** results showed that LAI,CCC,and CEWT were inversely related with PPC-induced *** applying multiple LUTs,the p-values were<0.01;the R2 values for LAI,CCC,and CEWT were 0.71,0.68,and 0.65 with root mean square error(RMSE)(normalized RMSE,NRMSE)values of 0.38(0.16),17.56μg cm-2(0.20),and 0.02 cm(0.51),*** to the values obtained for the traditional PROSAIL model,for October,R2 values increased by 0.05 and 0.10 and NRMSE decreased by 0.09 and 0.02 for CCC and CEWT,respectively and RMSE decreased by 0.35μg cm-2 for *** feasibility of the inverse strategy for integrating pest-induced stress factors into the PROSAIL model,while establishing multiple LUTs under different pest-induced damage levels,was successfully demonstrated and can potentially enhance future vegetation parameter inversion and monitoring of bamboo forest health and ecosystems.

关键词： Moso bamboo Chlorophyll content Equivalent water thickness PROSAIL model Multiple LUTs Pantana phyllostachysae Chao Sentinel-2A/B images

Mechanical and Thermal Properties of Muscovite and Density Polyethylene-reinforced and–toughened Polypropylene Composites

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Journal of Wuhan University of Technology(Materials Science) 2009年第4期24卷 581-587页

作者：张凌燕魏婷婷 College of Resource and Environment Engineering Wuhan University of Technology

The mechanical and thermal properties of polypropylene （PP）/muscovite/ low-density polyethylene （LDPE）/ polypropylenegraftmaleic anhydride （PP-g-MAH） ternary composites were investigated. In PP matrix, muscovite, LDPE, and PP-g-MAH were added as strengthening agent, toughening agent, and compatibilizer, respectively. The effects of dosages of the added materials were analyzed. The - experimental results show that the optimum recipe of PP/muscovite/LDPE/PP-g-MAH composites is 100/10/6/20 （mass ratio）. Compared with the pure PP, the mechanical properties of PP/muscovite/LDPE/PP-g-MAH composites, including notched impact strength, Rockwell hardness and flexural strength, are improved. Although tensile strength is slightly decreased, they have better toughness. Filled with muscovite, the heat-resistance and heat-decompostion of the composites are improved.

关键词： PP LDPE muscovite reinforcement and toughening

SiC/Mg multilayer reflective mirror for He-Ⅱ radiation at 30.4 nm and its thermal stability

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Frontiers of Optoelectronics 2008年第Z2期1卷 305-308页

作者： Jingtao ZHU Da XU Shumin ZHANG Wenjuan WU Zhong ZHANG Fengli WANG Bei WANG Cunxia LI Yao XU Zhanshan WANG lingyan chen Hongjun ZHOU Tonglin HUO Institute of Precision Optical Engineering and Technology Physics Department Tongji University National Synchrotron Radiation Laboratory University of Science and Technology of China

In applications of solar physics, extreme ultraviolet imaging of solar corona by selecting the He-Ⅱ（λ = 30.4 nm） emission line requires high reflectivity multilayer mirrors. Some material combinations were studied to design the mirrors working at a wavelength of 30.4 nm, including SiC/Mg, B4C/Mg, C/Mg, C/Al, Mo/Si, B4C/Si, SiC/Si, C/Si, and Sc/Si. Based on optimization of the largest reflectivity and the narrowest width for the multilayer mirror, a SiC/Mg material combination was selected as the mirror and fabricated by a magnetron sputtering system. The layer thicknesses of the SiC/Mg multilayer were measured by an X-ray *** were then measured on beamline U27 at the National Synchrotron Radiation Laboratory（NSRL） in Hefei, China. At a wavelength of 30.4 nm, the measured reflectivity is as high as 38.0%. Furthermore, a series of annealing experiments were performed to investigate the thermal stability of the SiC/Mg multilayer.

关键词： thin film optics solar He-II radiation extreme ultraviolet multilayer reflective mirror magnetron sputtering synchrotron radiation