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Morphological,phylogenetic and metabolite profile of Prorocentrum clipeus,a newly recorded epiphytic dinoflagellate in the northern Yellow Sea

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Acta Oceanologica Sinica 2024年第8期43卷 128-141页

作者： Ruifang Wang Mengmeng Tong Shiwen Zhou junjie Zheng Wenguang zhang Xinfeng Dai Douding Lu Jiarong hu Tianze leng Qinglin Mu Zhongyong Yan Jiangning Zeng Pengbin Wang Ocean College Zhejiang UniversityZhoushan 316021China Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China The State Key Laboratory of Marine Pollution Department of Biomedical SciencesCity University of Hong KongHong Kong SAR 999077China Zhejiang Marine Ecology and Environment Monitoring Center Zhoushan 316000China

More than 30 species of benthic Prorocentrum have been identified,some of which produce okadaic acid(OA)and its derivatives,dinophysistoxins(DTXs),which cause diarrhetic shellfish poisoning(DSP).Increasing numbers of benthic Prorocentrum species have been reported in tropical and subtropical waters of *** contrast,only a few benthic Prorocentrum species have been reported in temperate *** this study,morphological descriptions obtained using light microscopy,scanning electron microscopy and molecular characterization of one Prorocentrum clipeus strain isolated from the Yellow Sea are *** clipeus cells were nearly circular in shape,with a collar,ridge,and one *** periflagellar area was wide U-shaped,with two curved projections on platelet *** periflagellar platelets of different sizes were *** morphology closely fits that of the species isolated from other *** analysis based on the molecular sequences of the small subunit(SSU)rDNA,internal transcribed spacer(ITS),and large subunit(LSU)rDNA was performed.A comprehensive metabolomic analysis incorporating target,suspect and non-target screenings was first applied to investigate the intracellular and extracellular metabolite profiles of the current isolate of *** to the results of the target and suspect screenings,179 metabolites or toxins produced by DSP-related algal species,including OA,dinophysistoxin-1(DTX1),dinophysistoxin-2(DTX2)and pectenotoxin-2(PTX2),were not ***-target screening involving feature-based molecular networking(FBMN)provided a global view of major metabolites produced by the *** DF128 strain and revealed 23 clusters belonging to at least 13 compound classes,with organometallic compounds,lipids and lipid-like molecules,phenylpropanoids and polyketides,and benzenoids as major *** date,this is the first record of the characterization of *** in samples from Chinese *** results suppo

关键词： Prorocentrum taxonomy phylogeny metabolite profiling Yellow Sea

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氟磷酸盐玻璃的应用研究进展

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激光与光电子学进展 2005年第7期42卷 12-16,41页

作者：张军杰何冬兵段忠超张丽艳戴世勋胡丽丽中国科学院上海光学精密机械研究所上海201800

氟磷酸盐玻璃系统由于其特殊的光学性能和优良的机械与热学性能一直是特种光学玻璃材料领域的一个研究热点。总结了氟磷酸盐玻璃的分类及玻璃组分与其结构的关系,综述了氟磷玻璃在光学器件、高能高功率激光玻璃、光纤激光器、光纤放大... 详细信息

氟磷酸盐玻璃系统由于其特殊的光学性能和优良的机械与热学性能一直是特种光学玻璃材料领域的一个研究热点。总结了氟磷酸盐玻璃的分类及玻璃组分与其结构的关系,综述了氟磷玻璃在光学器件、高能高功率激光玻璃、光纤激光器、光纤放大器及上转换发光基质材料等领域上的应用,并对其未来的发展进行了展望。

关键词：氟磷酸盐玻璃应用研究进展光学玻璃材料光纤激光器上转换发光光纤放大器研究热点热学性能光学性能玻璃系统光学器件激光玻璃基质材料磷玻璃高功率

北京市非中心城区土地利用-人口-经济协同预测

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测绘通报 2024年第8期 165-171页

作者：黄语晨胡佳怡冷骏杰刘鑫耀张子玉张春晓中国地质大学(北京)信息工程学院北京100083

非首都功能的疏解政策涉及城市化建设、经济、人口等多个方面,当前的预测研究多针对单一的空间要素进行模拟和预测,而未关注到城市发展中多个空间要素相互交织的影响。本文将北京市非中心城区作为研究区,以多年度土地利用数据、GDP格网... 详细信息

非首都功能的疏解政策涉及城市化建设、经济、人口等多个方面,当前的预测研究多针对单一的空间要素进行模拟和预测,而未关注到城市发展中多个空间要素相互交织的影响。本文将北京市非中心城区作为研究区,以多年度土地利用数据、GDP格网数据和人口格网数据为基础,通过PLUS模型和SCS方法,以多要素协同模拟的方式模拟了规划情景下2030年的土地利用格局,以及2030年GDP-人口公里格网数据,并计算了时空与总量变化特征。结果显示:①在生态优先的政策情景下,北京市非中心城区的林草地及水体将会扩张但整体扩张趋势不明显;②政策指导下,2020—2030年研究区人口与GDP承载了中心区的外溢,经济与人口都实现了高质量发展。本文的研究为城市化建设、人口监控管理和资源优化配置提供了科学参考。

关键词：土地利用经济人口空间分布 PLUS模型 SCS方法情景构建非首都功能北京市