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New Benthic Fossils from the Late Ediacaran Strata of Southwestern China

Acta Geologica Sinica(English Edition) 2024年第2期98卷 311-323页

作者： LIU Junping LI Ming TANG Feng ZHAO Jiangtai song Sicun ZHOU Ying song xiaohan REN Liudong School of Earth Science and Resources China University of GeosciencesBeijing 10083China Yunnan Institute of Geological Survey Kunming 650216China Chinese Academy of Geological Sciences Beijing 10037China Key Laboratory for Stratigraphy and Paleontology MNRCBeijing 10037China School of Earth Science and Engineering Nanjing UniversityNanjing 210093China Department of Earth Sciences University College LondonLondon WC1E 6BTU.K. CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdaoShandong 266071China Institute of Geology Chinese Academy of Geological SciencesBeijing 10037China

The Jiangchuan Biota from the Jiucheng Member(Mb.)of the Dengying Formation(Fm.),discovered in Jiangchuan,eastern Yunnan,China,is marked by copious macrofossils at the apex of the Ediacaran *** fauna features benthic algae with varied holdfasts and other fossils of indeterminate taxonomic affinity and is compositionally unique compared to the Shibantan and Gaojiashan biotas of the Dengying *** the Miaohe and Wenghui biotas of the Doushantuo Fm.,elsewhere in *** novel benthic saccular macroalgal fossil,named here Houjiashania yuxiensis *** ***.,from the Jiangchuan Biota is based on fossils that are sausage-shaped,elongate,tubular,ranging from 0.3 to 4 cm in length,and up to 0.8 cm in *** terminus is blunt and rounded to an obtuse angle,the other is bent with a spread-out surface resembling a holdfast,suggesting a three-dimensional ***,stipe-shaped outgrowths,likely vestiges of sessile saccular life forms,are prevalent in macroalgal fossils of analogous size and shape,as well as present brown algae Scytosiphonaceae,such as Colpomenia and *** new findings augment the diversity of benthic algae,such as those known from the Early Neoproterozoic Longfengshan Biota in North *** benthic algal macrofossils in the Jiucheng *** to knowledge of Late Ediacaran metaphyte diversification and offer more clues about the evolutionary positioning of primitive *** co-occurrence of numerous planktonic and benthic multicellular algae and planktonic microbes might have facilitated ecologically the more extensive later Cambrian explosion evidenced by the Chengjiang Biota in Yunnan.

关键词： paleophytology benthic saccular algae algal evolution Neoproterozoic Jiucheng Member Jiangchuan Biota Yunnan Province

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基于云的车辆悬架K&C数据存储与计算模型研究

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北京汽车 2024年第2期 11-14页

作者：徐霖黄迪青宋笑寒上海机动车检测认证技术研究中心有限公司上海201805

以整车悬架K&C试验积累数据的结构化解析为基础,建立带权限管控的私有云端数据库,实现授权范围内任意数据快速提取,利用自主开发的Web APP(Web Application,Web应用程序)计算不同车型、试验类型、工况、模式等限制条件下的指标值,实现... 详细信息

以整车悬架K&C试验积累数据的结构化解析为基础,建立带权限管控的私有云端数据库,实现授权范围内任意数据快速提取,利用自主开发的Web APP(Web Application,Web应用程序)计算不同车型、试验类型、工况、模式等限制条件下的指标值,实现跨试验、跨车型全局比较。通过直接对比客观数据指标,可快速准确地得到悬架结构、性能的量化优化目标,有助于快速提升车辆操纵稳定性和平顺性。

关键词：解析模型 K&C试验云

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Asymmetric Synthesis of Chiral a-Substituted Mercaptoglycine Derivatives via α-Sulfenylation of Ni（ll） Complex of Glycine and S-Substituted 4-Methylbenzenesulfonothioate

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Chinese Journal of Chemistry 2017年第9期35卷 1383-1390页

作者： Jia Li xiaohan song Shengbin Zhou Jiang Wang Hong Liu CAS Key Laboratory of Receptor Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai 201203 China University of Chinese Academy of Sciences Beijing 100049 China School of Pharmacy China Pharmaceutical University Nanjing Jiangsu 210009 China

The asymmetric a-sulfenylation of Ni（II） complex of glycine with S-substituted 4-methylbenzenesulfonothioate is reported. Due to the mild and simple reaction conditions, this asymmetric reaction is compatible with v... 详细信息

关键词： α-sulfenylation asymmetric synthesis Ni(II) complex chiral a-substituted mercaptoglycine derivatives

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Low genetic diversity in the endangered marine alga Silvetia siliquosa(Ochrophyta:Fucaceae)and the implication to conservation

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Journal of Oceanology and Limnology 2022年第1期40卷 216-225页

作者： Yanshuo LIANG Jie ZHANG xiaohan song Han-Gil CHOI Xu GAO Delin DUAN Zi-min HU CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy Sciences Beijing 100049China Faculty of Biological Science and Institute for Environmental Science Wonkwang UniversityIksan 54538Korea Ocean School Yantai UniversityYantai 264005China

Although signifi cant research eff orts have been targeted toward conservation and management of endangered terrestrial fl ora and fauna,attempts have been limited to conserve threatened *** siliquosa is an ecologically and commercially vital brown alga that is uniquely distributed in the Yellow-Bohai Sea and along the southwest coast of Korea.A massive decline in its distribution range and biomass from the mid-1990s onward indicates that this species has become *** the present study,we used nuclear internal transcribed spacer and concatenated mitochondrial cytochrome oxidase I subunit+intergenic spacer to estimate the genetic diversity,population connectivity,and degree of genetic diff erentiation of *** in China and *** molecular results exhibited strikingly low levels of haplotype/ribotype and nucleotide diversity in *** populations,with only three mitochondrial haplotypes and nuclear ribotypes detected in 136 and 143 specimens,*** analysis of molecular variance revealed 85%-95%of genetic variance among *** diff erentiation coeffi cient(F_(ST))and gene fl ow(N_(m))suggested that two populations(JIN and GWA)along the southern coast of Korea are highly divergent from the others,with weak genetic *** signifi cant genetic diff erentiation was observed among populations either in China or along the geographically proximate west coast of ***,four independent management units were designated for sustainable management:the LII and RUS populations in China,the YEO and CHA populations along the west coast of Korea,and each of the GWA and JIN populations along the south coast of *** suggest that artifi cial cultivation and transplantation of *** are the eff ective approaches for restoration and conservation.

关键词： biodiversity conservation endangered seaweed genetic diversity habitat loss Silvetia siliquosa

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Effect of cOVID-19 lockdown on the characterization and mixing state of carbonaceous particles in the urban atmosphere of Liaocheng, the North China Plain

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Particuology 2023年第7期78卷 23-34页

作者： Min Chen Jingjing Meng Yuanyuan Li Yachen Wang Tonglin Huang Zheng Li xiaohan song Can Wu Zhanfang Hou School of Geography and the Environment Liaocheng UniversityLiaocheng252000China Key Laboratory of Geographic Information Science of the Ministry of Education School of Geographic SciencesEast China Nomnal University.Shanghai200241China

To investigate the effect of covID-19 control measures on aerosol chemistry,the chemical compositions,mixing states,and formation mechanisms of carbonaceous particles in the urban atmosphere of Liao-cheng in the North China Plain(NCP)were compared before and during the pandemic using a single particle aerosol mass spectrometry(SPAMS).The results showed that the concentrations of five air pollutants including PM2.5,PM1o,SO2,NO2,and cO decreased by 41.2%-71.5%during the pandemic compared to those before the pandemic,whereas O3 increased by 1.3 times during the pandemic because of the depressed titration of O3 and more favorable meteorological *** count and percentage contribution of carbonaceous particles in the total detected particles were lower during the pandemic than those before the *** carbonaceous particles were dominated by elemental and organic carbon(ECOC,35.9%),followed by elemental carbon-aged(EC-aged,19.6%)and organic carbon-fresh(OC-fresh,13.5%)before the pandemic,while EC-aged(25.3%),ECOC(17.9%),and secondary ions-rich(SEC,17.8%)became the predominant species during the *** carbonaceous particle sizes during the pandemic showed a broader distribution than that before the pandemic,due to the condensation and coagulation of carbonaceous particles in the aging *** relative aerosol acidity(Rra)was smaller before the pandemic than that during the pandemic,indicating the more acidic particle aerosol during the pandemic closely related to the secondary species and relative humidity(RH).More than 95.0%and 86.0%of carbonaceous particles in the whole period were internally mixed with nitrate and sulfate,implying that most of the carbonaceous particles were associated with secondary oxidation during their formation *** diurnal variations of oxalate particles and correlation analyses suggested that oxalate particles before the pandemic were derived from aqueous oxidation driven by RH and liquid water content(LwC),wh

关键词： Carbonaceous particles Oxalate particles Mixing state COVID-19 lockdown Single particle aerosol mass spectrometry(SPAMS)

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黍子SRS基因家族的全基因组鉴定与表达分析

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草业科学 2024年第9期41卷 2035-2045页

作者：李佳祯杨梦珂宋晓涵王月王禹茜王世纪张美春邓欣王红艳辽宁大学生命科学院植物表观遗传与进化实验室辽宁沈阳110036

植物特异性SHI-related sequence (SRS)转录因子在调控植物生长发育、激素生物合成和胁迫反应中起着至关重要的作用。本文研究了黍子(Panicum miliaceum) SRS基因家族(PmSRS)，利用生物信息学方法分析了PmSRS的结构和功能，并通过转录... 详细信息

植物特异性SHI-related sequence (SRS)转录因子在调控植物生长发育、激素生物合成和胁迫反应中起着至关重要的作用。本文研究了黍子(Panicum miliaceum) SRS基因家族(PmSRS)，利用生物信息学方法分析了PmSRS的结构和功能，并通过转录组数据分析SRS基因在黍子不同组织和不同成熟阶段的基因表达水平。共鉴定出13个PmSRS，根据系统发育关系分为6个亚家族，且同一亚家族中的PmSRS成员包含相似的基因结构和基序组成。发现在PmSRS基因的启动子区存在39种与植物生长发育、植物激素、胁迫及光响应相关的顺式作用元件。此外，PmSRS5、PmSRS6可能在黍子生长时期发挥主要作用。本研究提供了黍子SRS基因家族的综合信息，有助于研究SRS基因的功能，并为黍子的分子改良提供了理论依据。

关键词：生物信息学分析比较基因组学系统发育分析保守结构域转录组黍子

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Multifunctional catalytic activity of Cu 3 N(001)surface:A first-principles study

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ChemPhysMater 2023年第3期2卷 231-238页

作者： Junru Wang Zhichao Liu Zhenhong Dai xiaohan song Xiaobiao Liu Department of Physics Yantai UniversityYantai 264005China Shandong Institute of Advanced Technology Jinan 250100China School of Science Henan Agricultural UniversityZhengzhou 450002China

Multifunctional catalysts that exhibit high catalytic performance for the hydrogen evolution reaction(HER),oxygen evolution reaction(OER),and oxygen reduction reaction(ORR)in a single material hold great promise for broad-spectrum applications,including overall water splitting,fuel cells,and metal-air *** this first-principles study,Cu_(3) N is computationally demonstrated as a multifunctional electrocatalyst for the HER,OER,and ORR owing to the unique coordination of N and Cu atoms on the(001)***_(3) N exhibits better HER catalytic activity than noble Pt-based ***,its OER and ORR catalytic activity is comparable to that of commercialized unifunctional catalysts,and its 4e-pathway selectivity is high during the *** catalytic performance of the ORR is significantly improved by the introduction of vacancy *** integration of highly efficient HER,OER,and ORR catalytic performance in earth-abundant Cu_(3) N not only opens an avenue for developing cost-efficient omnipotent catalysts but also facilitates advances in clean and renewable energy.

关键词： Multifunctional catalysts Overall water splitting Oxygen reduction Cu_(3)N First principles calculations

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Synergistic trifunctional electrocatalysis of pyridinic nitrogen and single transition-metal atoms anchored on pyrazine-modified graphdiyne

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Science Bulletin 2020年第12期65卷 995-1002,M0003页

作者： Siyun Qi Junru Wang xiaohan song Yingcai Fan Weifeng Li Aijun Du Mingwen Zhao School of Physics&State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyGardens Point CampusQLD 4001 BrisbaneAustralia

Multifunctional catalysts that integrate high efficiency hydrogen evolution reaction(HER), oxygen evolution reaction(OER) and oxygen reduction reaction(ORR) catalytic activity in a single material are attractive for unitized regenerative fuel cells and overall water splitting technologies. As the best-known HER and ORR electrocatalysts, Pt and its alloys have only moderate OER activity. Ruthenium and iridium oxides exhibit the highest OER activities but not as active as Pt for HER and ORR. Here, we proposed a general principle for achieving trifunctional electrocatalysis for three reactions in a single material. Using the newly-synthesized pyrazine-modified graphdiyne(PR-GDY) as an example, we demonstrated that the synergistic effect of the pyridinic nitrogen and anchored transition-metal(TM) single atoms renders highly-efficient HER/OER/ORR trifunctional electrocatalytic activity. For the Ni-doped PR-GDY, the overpotentials for HER, OER and ORR can be respectively as low as -0.05, 0.29 and 0.38 V, which are comparable or even superior to the best-known single-functional and bi-functional precious *** computational results offer not only a promising trifunctional electrocatalyst but also a strategy for the design of multifunctional electrocatalysts.

关键词： Trifunctional electrocatalysts Pyrazine-modified graphdiyne(PR-GDY) Single atoms Density-functional theory

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Highly-efficient overall water splitting in 2D Janus group-Ⅲ chalcogenide multilayers: the roles of intrinsic electric filed and vacancy defects

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Science Bulletin 2020年第1期65卷 27-34,M0003页

作者： Yingcai Fan Xikui Ma Junru Wang xiaohan song Aizhu Wang Hong Liu Mingwen Zhao School of Physics Shandong UniversityJinan 250100China School of Information and Electronic Engineering Shandong Technology and Business UniversityYantai 264005China Institute for Advanced Interdisciplinary Research University of JinanJinan 250022China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China School of Physics and Electrical Engineering Kashgar UniversityKashi 844006China

Two-dimensional(2 D)van der Waals materials have been widely adopted as photocatalysts for water splitting,but the energy conversion efficiency remains *** the basis of first-principles calculations,we demonstrate that the 2 D Janus group-Ⅲchalcogenide multilayers:In Ga XY,M2XY and In GaX2(M=In/Ga;X,Y=S/Se/Te),are promising photocatalysts for highly-efficient overall water *** intrinsic electric field enhances the spatial separations of photogenerated carriers and alters the band alignment,which is more pronounced compared with the Janus *** solar-to-hydrogen(STH)efficiency with the upper limit of 38.5%was predicted in the Janus *** excitingly,the Ga vacancy of In Ga SSe bilayer effectively lowers the overpotentials of hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)to the levels provided solely by the photogenerated *** theoretical results suggest that the 2 D Janus group-III chalcogenide multilayers could be utilized as highly efficient photocatalysts for overall water splitting without the needs of sacrificial reagents.

关键词： Janus group-Ⅲchalcogenides Solar-to-hydrogen efficiency Photocatalytic water splitting Intrinsic electric fields First-principle calculation

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聊城市秋冬季VOCs污染特征及来源解析

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环境科学与技术 2024年第1期47卷 189-200页

作者：黄同林王艳辉王一秋王亚晨马江凯张晓婷宋小涵孟静静侯战方聊城大学地理与环境学院山东聊城252000 聊城市环境信息与监控中心山东聊城252000 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室陕西西安710061

为深入了解聊城市秋冬季挥发性有机物(VOCs)的污染特征、来源及其对臭氧和二次有机气溶胶的生成潜势,作者使用在线监测系统分析了城区115种VOCs的体积分数。利用最大增量反应活性系数法和气溶胶生成系数法,计算了VOCs的臭氧生成潜势(OF... 详细信息

为深入了解聊城市秋冬季挥发性有机物(VOCs)的污染特征、来源及其对臭氧和二次有机气溶胶的生成潜势,作者使用在线监测系统分析了城区115种VOCs的体积分数。利用最大增量反应活性系数法和气溶胶生成系数法,计算了VOCs的臭氧生成潜势(OFPs)和二次有机气溶胶的生成潜势(SOAFPs),并利用特征性比值法和正交矩阵因子模型(PMF)解析了大气VOCs的来源。结果表明:秋、冬季VOCs的化学组成相似,烷烃和OVOCs是体积浓度最高的2种组分。冬季OFPs为140.2×10^(-9),约是秋季(89.0×10^(-9))的1.6倍,OVOCs和C2~C4烯烃对秋、冬季VOCs的OFPs贡献最大(占54.7%~58.6%)。秋季(1.0μg/m^(3))与冬季(1.2μg/m^(3))生成的SOAFPs质量浓度水平相似,间/对-二甲苯、甲苯和邻-二甲苯是秋、冬季SOAFPs贡献最大的3种组分。甲苯/苯比值的分析结果表明,机动车尾气是聊城市大气VOCs的重要来源之一。PMF分析结果显示,秋季VOCs主要来自植物源和二次生成源(27.2%)、机动车尾气排放源(19.5%)、燃料燃烧源(18.5%)、溶剂使用源(17.5%)与工业源(17.3%);而冬季VOCs主要来源于汽油车尾气排放源(24.4%)、有机化工排放源(21.3%)、工业卤代烃源(20.8%)、柴油车尾气排放源(16.9%)与溶剂使用源(16.6%)。以上结果可为聊城市大气VOCs排放管控与空气质量改善提供重要的数据支持。

关键词：挥发性有机物臭氧生成潜势二次有机气溶胶生成潜势来源解析聊城市

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