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The Phoebe genome sheds light on the evolution of magnoliids

Horticulture Research 2020年第1期7卷 876-888页

作者： Shi-Pin Chen Wei-Hong sun Yuan-Fang Xiong Yu-Ting Jiang Xue-Die Liu Xing-Yu Liao Di-Yang Zhang Shu-Zhen Jiang Yu Li Bin Liu liang Ma Xia Yu Li He Bao Liu Jin-Lin Feng Li-Zhen Feng Zhi-Wen Wang Shuang-Quan Zou Si-Ren Lan zhong-Jian Liu College of Forestry Fujian Agriculture and Forestry University350002 FuzhouChina Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at the College of Landscape Architecture Fujian Agriculture and Forestry University350002 FuzhouChina PubBio-Tech 430070 WuhanChina Zhejiang Institute of Subtropical Crops Zhejiang Academy of Agricultural Sciences325005 WenzhouChina Institute of Vegetable and Flowers Shandong Academy of Agricultural Sciences250100 JinanChina

Lauraceae includes the genus Phoebe,and the family is linked to the evolution of *** sequenced the genome of Phoebe bournei *** assembled genome size was 989.19 Mb,with a contig N50 value of 2.05 Mb.A total of 28,198 protein-coding genes were annotated in ***-genome duplication(WGD)analysis showed that Lauraceae has experienced two WGD events;the older WGD event occurred just before the divergence of Lauraceae and Magnoliales,and the more recent WGD was shared by all lineages of *** phylogenetic tree showed that magnoliids form a sister clade to monocots and *** also identified 63 MADS-box genes,including AGL12-like genes that may be related to the regulation of *** roots and FIN219-like genes encoding GH3 proteins,which are involved in ***50-like genes involved in light signal-mediated pedicel or stem development were also *** ATMYB46-and three PtrEPSP-homologous genes related to lignin biosynthesis were *** genes may be associated with the formation of straight trunks in ***,the *** reference genome provides insight into the origin,evolution,and diversification of Phoebe and other magnoliids.

关键词： Whole evolution light

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超支化分子自组装形成纳米纤维的计算机模拟研究

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高分子学报 2017年第2期27卷 351-358页

作者：朱有亮李占伟孙昭艳吕中元中国科学院长春应用化学研究所高分子物理与化学国家重点实验室长春130022 吉林大学理论化学研究所超分子结构与材料国家重点实验室长春130023

利用分子动力学模拟方法,针对实验上的超支化分子建立其粗粒化模型,模拟研究了该超支化分子在水和空气的界面上形成Langmuir单分子层的过程,并分析了通过自组装形成的纤维的微观结构.该纤维是由单排超支化分子线性排列形成,超支化分子... 详细信息

利用分子动力学模拟方法,针对实验上的超支化分子建立其粗粒化模型,模拟研究了该超支化分子在水和空气的界面上形成Langmuir单分子层的过程,并分析了通过自组装形成的纤维的微观结构.该纤维是由单排超支化分子线性排列形成,超支化分子的末端碳链裸露在空气中,且处于伸展的竖起状态.调节末端支链的亲疏水性能够影响形成的自组装结构,末端支链越亲水,超支化分子越不容易形成一维纳米纤维结构.

关键词：超支化分子纳米纤维计算机模拟

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Ore Genesis for Stratiform Ore Bodies of the Dongfengnanshan Copper Polymetallic Deposit in the Yanbian Area, NE China:Constraints from LA-ICP-MS in situ Trace Elements and Sulfide S–Pb Isotopes

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1591-1606页

作者： LU Siyu REN Yunsheng YANG Qun sun Zhenming HAO Yujie sun Xinhao College of Earth Sciences Jilin UniversityChangchun 130061China Institute of Disaster Prevention Beijing 101601China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural Resources of ChinaChangchun 130061China

The Dongfengnanshan Cu polymetallic deposit is one representative deposit of the Tianbaoshan ore district in the Yanbian area, northeast(NE) China. There occur two types of ore bodies in this deposit, the stratiform ore bodies and veintype ones, controlled by the Early Permian strata and the Late Hercynian diorite intrusion, respectively. Due to the ambiguous genetic type of the stratiform ore bodies, there has been controversy on the relationship between them and veintype ore bodies. To determine the genetic type of stratiform ore bodies, laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS) in situ trace elements and S–Pb isotope analysis have been carried on the sulfides in the stratiform ore bodies. Compared with that in skarn, Mississippi Valley-type(MVT), and epithermal deposits, sphalerite samples in the stratiform ore bodies of the Dongfengnanshan deposit are significantly enriched in Fe, Mn, and In, while depleted in Ga, Ge, and Cd, which is similar to the sphalerite in volcanic-associated massive sulfide(VMS) deposits. Co/Ni ratio of pyrrhotites in the stratiform ore bodies is similar to that in VMS-type deposits. The concentrations of Zn and Cd of chalcopyrites are similar to those of recrystallized VMS-type deposits. These characteristics also reflect the intermediate ore-forming temperature of the stratiform ore bodies in this deposit. Sulfur isotope compositions of sulfides are similar to those of VMS-type deposits, reflecting that sulfur originated from the Permian Miaoling Formation. Lead isotope compositions indicate mixed-source for lead. Moreover, the comparison of the Dongfengnanshan stratiform ore bodies with some VMStype deposits in China and abroad, on the trace elements and S–Pb isotope characteristics of the sulfides reveals that the stratiform ore bodies of the Dongfengnanshan deposit belong to the VMS-type, and have closely genetic relationship with the early Permian marine volcanic sedimentary rocks.

关键词： LA-ICP-MS in situ trace element S-Pb isotope VMS-type stratiform orebodies Dongfengnanshan copper polymetallic deposit Tianbaoshan ore district

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Long-lifespan aqueous alkaline and acidic batteries enabled by redox conjugated covalent organic polymer anodes

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Chinese Journal of Structural Chemistry 2024年第3期43卷 19-24页

作者： Yuanzhe Lu Yuanqin Zhu Linfeng zhong Dingshan Yu School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Electrochemical Energy MaterialsGuangxi UniversityNanning530004China Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High-performance Polymer-based Composites of Guangdong ProvinceSchool of ChemistrySun Yat-Sen UniversityGuangzhou510006China

Herein,we introduce a redox conjugated covalent organic polymer(p-HATN,HATN=hexaazatrinaphthylene)anode bearing HATN species for long-lifespan aqueous alkaline and acidic *** p-HATN features intriguing superhydrophilicity and unique wide pH adaptability,while the conjugated network and amorphous cross-linked structure further endow p-HATN with improved electron transport,facile ion diffusion and superior acid-alkali *** a result,p-HATN exhibits fast surface-controlled redox activity and superior stability for K^(+)and H^(+)ions storage with remarkable capacity retentions in three-electrode cells(88%capacity retention in 13 M KOH over 30000 cycles;nearly 100%capacity retention in 0.5 M H_(2)SO_(4)over 54000 cycles).Moreover,the assembled p-HATN//Ni(OH)_(2)cell with 13 M KOH and p-HATN//PbO_(2)cell with 0.5 M H_(2)SO_(4)also achieve ca-pacity retentions of 83%retention over 55000 cycles and 92%over 15000 cycles,respectively,outperforming most similar *** work sheds light on the rational design of advanced polymer anodes for long-lifespan alkaline and acidic batteries.

关键词： Covalent organic polymer Polymer electrodes Organic electrodes Aqueous batteries Alkaline and acidic batteries

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黑莓营养成分及功能研究进展

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江苏调味副食品 2023年第1期 12-16,44页

作者：孙洋钟良江苏莓小仙健康科技有限公司江苏南京211100

黑莓是一种营养丰富的小浆果,风靡欧美。由于种植历史较短,我国黑莓产业发展还处于初级阶段。从黑莓的营养成分、抗氧化性能和功效等方面对黑莓进行了总结,为我国黑莓产业的健康发展提供参考。

关键词：黑莓营养成分抗氧化功能

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A Possible 250s X-Ray Quasi-periodicity in the Fast Blue Optical Transient AT2018cow

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Research in Astronomy and Astrophysics 2022年第12期22卷 299-310页

作者： Wenjie Zhang Xinwen Shu Jin-Hong Chen Luming sun Rong-Feng Shen Lian Tao Chun Chen Ning Jiang Liming Dou Ying Qin Xue-Guang Zhang liang Zhang Jinlu Qu Tinggui Wang Department of Physics Anhui Normal UniversityWuhu 241002China School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of ScienceBeijing 100049China CAS Key Laboratory for Researches in Galaxies and Cosmology Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China Department of Astronomy Guangzhou UniversityGuangzhou 510006China School of Physics and Technology Nanjing Normal UniversityNanjing 210023China

The fast blue optical transients(FBOTs)are a new population of extragalactic transients of unclear physical origin.A variety of mechanisms has been proposed including failed supernova explosion,shock interaction with a dense medium,young magnetar,accretion onto a compact object and stellar tidal disruption event,but none is *** we report the discovery of a possible X-ray quasi-periodicity signal with a period of~250 s(at a significance level of 99.76%)in the brightest FBOT AT2018cow through the analysis of XMM-Newton/PN *** signal is independently detected at the same frequency in the average power density spectrum from data taken from the Swift telescope,with observations covering from 6 to 37 days after the optical discovery,though the significance level is lower(94.26%).This suggests that the quasi-periodic oscillation(QPO)frequency may be stable over at least 1.1×10^(4)*** the~250 s QPO to be a scaled-down analog of that typically seen in stellar mass black holes,a black hole mass of~103–10^(5)solar masses could be *** overall X-ray luminosity evolution could be modeled with a stellar tidal disruption by a black hole of~10^(4)solar masses,providing a viable mechanism to produce *** findings suggest that other bright FBOTs may also harbor intermediate-mass black holes.

关键词： black hole physics X-rays:individual(AT2018cow) X-rays:bursts

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Enhanced photocatalytic N2 fixation by promoting N2 adsorption with a co-catalyst

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Science Bulletin 2019年第13期64卷 918-925页

作者： Xiang Gao Li An Dan Qu Wenshuai Jiang Yanxiao Chai Shaorui sun Xingyuan Liu Zaicheng sun State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China University of Chinese Academy of Sciences Beijing 100190China Center of Excellence for Environmental Safety and Biological Effects Beijing Key Laboratory of Green Catalysis and Separation Department of Chemistry and Chemical EngineeringSchool of Environmental and EnergyBeijing University of TechnologyBeijing 100124China

Photocatalytic N2 fixation involves a nitrogen reduction reaction on the surface of the photocatalyst to convert N2 into ***,the adsorption of N2 is the limiting step for the N2 reduction reaction on the surface of the *** on the concept of photocatalytic water splitting,the photocatalytic efficiency can be greatly enhanced by introducing a *** this report,we proposed a new strategy,namely,the loading of a NiS co-catalyst on CdS nanorods for photocatalytic N2 *** calculation results indicated that N2 was effectively adsorbed onto the NiS/CdS *** programmed desorption studies confirmed that the N2 molecules preferred to adsorb onto the NiS/CdS *** sweep voltammetry results revealed that the overpotential of the N2 reduction reaction was reduced by loading ***,transient photocurrent and electrochemical impedance spectroscopy indicated that the charge separation was enhanced by introducing *** N2 fixation was carried out in the presence of the catalyst dispersed in water without any sacrificial *** a result,1.0 wt% NiS/CdS achieved an ammonia production rate of 2.8 and 1.7 mg L-1 for the first hour under full spectrum and visible light(λ>420 nm),*** catalyst demonstrated apparent quantum efficiencies of 0.76%,0.39% and 0.09% at 420,475 and 520 nm,res *** study provides a new method to promote the photocatalytic efficiency of N2 fixation.

关键词： N2 fixation Photocatalyst Co-catalyst N2 adsorption NiS

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Monitoring Maize Lodging Grades via Unmanned Aerial Vehicle Multispectral Image

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Plant Phenomics 2019年第1期1卷 90-105页

作者： Qian sun Lin sun Meiyan Shu Xiaohe Gu Guijun Yang Longfei Zhou National Engineering Research Center for Information Technology in Agriculture BeijingChina College of Geomatics Shandong University of Science and TechnologyQingdaoChina College of Resources and Environmental Sciences China Agricultural UniversityBeijingChina

Lodging is one of the main factors affecting the quality and yield of *** and accurate determination of crop lodging grade is of great significance for the quantitative and objective evaluation of yield *** purpose of this study was to analyze the monitoring ability of a multispectral image obtained by an unmanned aerial vehicle(UAV)for determination of the maize lodging grade.A multispectral Parrot Sequoia camera is specially designed for agricultural applications and provides new information that is useful in agricultural ***,a near-infrared image which cannot be seen with the naked eye can be used to make a highly precise diagnosis of the vegetation *** images obtained constitute a highly effective tool for analyzing plant *** samples with different lodging grades were obtained by visual interpretation,and the spectral reflectance,texture feature parameters,and vegetation indices of the training samples were *** feature transformations were performed,texture features and vegetation indices were combined,and various feature images were classified by maximum likelihood classification(MLC)to extract four lodging *** accuracy was evaluated using a confusion matrix based on the verification samples,and the features suitable for monitoring the maize lodging grade were *** results showed that compared with a multispectral image,the principal components,texture features,and combination of texture features and vegetation indices were improved by varying *** overall accuracy of the combination of texture features and vegetation indices is 86.61%,and the Kappa coefficient is 0.8327,which is higher than that of other ***,the classification result based on the feature combinations of the UAV multispectral image is useful for monitoring of maize lodging grades.

关键词： image indices diagnosis

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Accumulation and Fractionation of Rare Earth Elements in a Soil-Wheat System

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Pedosphere 2006年第1期16卷 82-90页

作者： DING Shi-Ming liang Tao ZHANG Chao-Sheng WANG Li-Jun sun Qin Nanjing Institute of Geography ＆ Limnology Chinese Academy of Sciences Nanjing 210008 （China） Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 （ China） Department of Geography and Environmental Change Institute National University of Ireland Galway （Ireland） State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210093 （China）

Time series bioaccumulation of rare earth elements （REEs） in field-grown wheat with and without a dressing of extraneous REE fertilizer at different growth stages and fractionation of REEs during their transport in a soil-wheat system were determined. Time-dependent accumulation of extraneous REEs was found in different parts of wheat. An upward transport of extraneous REEs from roots to shoots under a soil dressing and a downward transport from leaves to roots with a foliar dressing were also observed. Moreover, fractionation of REEs occurred in the soil-wheat system. Compared to the host soil a positive Eu anomaly in the stems and grains as well as heavy REE enrichment in the grains were found. The ability of the different wheat organs to fractionate Eu from the REE series was ranked in the order of sterns 〉 grains 〉 leaves 〉 roots.

关键词： accumulation fractionation rare earth elements wheat

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Non-Markovian discrete qubit dynamics

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Science Bulletin 2016年第13期61卷 1031-1036页

作者： Jun sun Yong-Nan sun Chuan-Feng Li Guang-Can Guo Kimmo Luoma Jyrki Piilo Key Laboratory of Quantum Information University of Scienceand Technology of China Chinese Academy of SciencesHefei 230026 China Synergetic Innovation Center of Quantum Information andQuantum Physics University of Science and Technology of China Hefei 230026 China Institut fur Theoretische Physik Technische Universitat Dresden 01062 Dresden Germany Department of Physics and Astronomy Turku Centre for Quantum Physics University of Turku20014 Turun Yliopisto Finland

The study of open quantum systems is important for fundamental issues of quantum physics as well as for technological applications such as quantum information processing. The interaction of a quantum system with its environment is usually detrimental for the quantum properties of the system and leads to decoherence. However,sometimes a quantum control can lead to a coherent partial exchange of information between the system and the dynamics of the open system might become non-Markovian. In this article, we study experimentally discrete nonMarkovian open quantum system dynamics. We implement a local control protocol using linear optics for controlling the information flow between the open system and the environment. We show how the transition from Markovian to non-Markovian dynamics can be controlled using only local operations for the open system.

关键词： Non-Markovian dynamics Openquantum system Quantum optics Coherent opticaleffects

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