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Temperate Stutzerimonas Phage Encoding Toxin-Antitoxin System Genes Represents a Novel Genus

Journal of Ocean University of China 2024年第4期23卷 1087-1101页

作者： ZHANG Hong GUO Ruizhe GAO Chen ZHENG Kaiyang XIONG Yao DONG Yue liu yundan WANG Ziyue CHEN Ying WANG Hongmin SHAO Hongbing SUNG Yeong Yik MOK Wen Jye WONG Li Lian MCMINN Andrew WANG Min LIANG Yantao College of Marine Life Sciences Institute of Evolution and Marine BiodiversityMOE Laboratory of Evolution and Marine BiodiversityFrontiers Science Center for Deep Ocean Multispheres and Earth SystemCenter for Ocean Carbon NeutralityOcean University of ChinaQingdao 266003China UMT-OUC Joint Center for Marine Studies Qingdao 266003China Institute of Marine Biotechnology Universiti Malaysia Terengganu21030 Kuala TerengganuMalaysia Institute for Marine and Antarctic Studies University of TasmaniaHobartTAS 7001Australia Haide College Ocean University of ChinaQingdao 266100China The Affiliated Hospital of Qingdao University Qingdao 266001China

Stutzerimonas have been extensively studied due to their remarkable metabolic and physiological ***,research on its phages is currently *** this study,we isolated a novel double-stranded DNA(dsDNA)phage,vB_SstM-PG1,from the marine environment that infects Stutzerimonas stutzeri *** dsDNA genome is 37204 bp long with a G/C content of 64.14%and encodes 54 open reading *** phage possesses a tail packaging structure that is different from known Stutzerimonas stutzeri phages and exhibits structural protein characteristics similar to those of temperate *** addition,two genes of toxin-antitoxin system,including YdaS_antitoxin and HEPN_SAV_6107,were found in the vB_SstM-PG1 genome and play important roles in regulating host growth and *** phylogenetic tree and comparative genomic analysis,it has been determined that vB_SstM-PG1 is not closely related to any phages previously identified in the GenBank ***,it has a connection with enigmatic,uncultured ***,the vB_SstM-PG1 virus exhibits an average nucleotide identity of over 70%with six uncultivated viruses identified in the IMG/VR v4 *** significant finding has resulted in the identification of a novel viral genus known as Metabovirus.

关键词： Stutzerimonas vB_SstM-PG1 Metabovirus temperate phage genomic and phylogenetic analysis

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自支撑NiSe/CoCr-LDH双功能电催化剂的制备及其裂解海水性能研究

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湘潭大学学报（自然科学版） 2024年第3期46卷 35-44页

作者：何作明蒲睿熙贺文刘韵丹湘潭大学物理与光电工程学院湖南湘潭411105

硒化镍(NiSe)得益于其优异的电催化性能,如:高导电性、丰富的晶相及电子结构、合成方式多样便捷等,成为大多数电催化水分解研究者的首选材料.在探究电催化活性的过程中,NiSe不可避免地存在活性低、稳定性差等问题.这意味着:一方面,需要... 详细信息

硒化镍(NiSe)得益于其优异的电催化性能,如:高导电性、丰富的晶相及电子结构、合成方式多样便捷等,成为大多数电催化水分解研究者的首选材料.在探究电催化活性的过程中,NiSe不可避免地存在活性低、稳定性差等问题.这意味着:一方面,需要额外提供更高的能量才可以实现水的分解,大大降低了电催化水分解的效率;另一方面,较差的稳定性难以应用于电催化电解海水,无法解决未来实现能量转换的关键问题.为了提高NiSe的稳定性及电催化活性以实现高效长期电解海水,该文将钴铬层状双金属氢氧化物(CoCr-LDH)通过电沉积的方式覆盖在NiSe表面,对NiSe进行保护的同时,与其构成异质结构,显著降低了电催化析氢析氧所需的能量,所制备的生长在泡沫镍上的NiSe和CoCr-LDH异质结构(NiSe/CoCr-LDH/NF)应用于模拟碱性海水环境下的全解水系统,仅需要提供1.59 V电压,电流密度即可达到40 mA·cm^(-2),稳定工作16 h且无氯气产生,实现绿色高效的电解海水.该文为制备高效稳定电催化剂提供了新思路.

关键词：过渡金属硫族化合物层状双金属氢氧化物双功能电催化水分解碱性模拟海水

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Hydrothermal exfoliated molybdenum disulfide nanosheets as anode material for lithium ion batteries

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Journal of Energy Chemistry 2014年第2期23卷 207-212页

作者： yundan liu Long Ren Xiang Qi Liwen Yang Jun Li Yao Wang Jianxin Zhong Hunan Provincial Key Laboratory for Micro Nano Energy Materials and Devices Xiangtan University Laboratory for Quantum Engineering and Micro Nano Energy Technology and Faculty of Materials and Optoelectronic Physics Xiangtan University

Ultrathin MoS2 nanosheets were prepared in high yield using a facile and effective hydrothermal intercalation and exfoliation route. The products were characterized in detail using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The results show that the high yield of MoS2 nanosheets with good quality was successfully achieved and the dimensions of the immense nanosheets reached 1 μm-2/zm. As anode material for Li-ion batteries, the as-prepared MoS2 nanosheets electrodes exhibited a good initial capacity of 1190 mAh.g-l and excellent cyclic stability at constant current density of 50 mA.g-1. After 50 cycles, it still delivered reversibly sustained high capacities of 750 mAh.g-1.

关键词： MoS2 nanosheets exfoliation lithium ion batteries

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Carbon matrix/SiNWs heterogeneous block as improved reversible anodes material for lithium ion batteries

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Journal of Energy Chemistry 2014年第1期23卷 105-110页

作者： Yao Wang Long Ren yundan liu Xuejun liu Kai Huang Xiaolin Wei Jun Li Xiang Qi Jianxin Zhong Hunan Key Laboratory for Micro-Nano Energy Materials and Devices Xiangtan University Laboratory for Quantum Engineering and Micro-Nano Energy Technology and Faculty of Materials and Optoelectronic Physics Xiangtan University

A novel carbon matrix/silicon nanowires(SiNWs) heterogeneous block was successfully produced by dispersing SiNWs into templated carbon matrix via a modified evaporation induced self-assembly method. The heterogeneous block was determined by X-ray diffraction, Raman spectra and scanning electron microscopy. As an anode material for lithium batteries, the block was investigated by cyclic voltammograms(CV), charge/discharge tests, galvanostatic cycling performance and A. C. impedance spectroscopy. We show that the SiNWs disperse into the framework, and are nicely wrapped by the carbon matrix. The heterogeneous block exhibits superior electrochemical reversibility with a high specific capacity of 529.3 mAh/g in comparison with bare SiNWs anode with merely about 52.6 mAh/g capacity retention. The block presents excellent cycle stability and capacity retention which can be attributed to the improvement of conductivity by the existence of carbon matrix and the enhancement of ability to relieve the large volume expansion of SiNWs during the lithium insertion/extraction cycle. The results indicate that the as-prepared carbon matrix/SiNWs heterogeneous block can be an attractive and potential anode material for lithium-ion battery applications.

关键词： SiNWs carbon matrix heterogeneous block lithium-ion battery

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Shock Raman spectra and structural transformation of powdered TKX-50 by the plate impact experiments combined with real-time Raman detection

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Defence Technology（防务技术） 2024年第1期31卷 158-162页

作者： Xue Yang Qijun liu yundan Gan Lei Yang Zhengtang liu Fusheng liu Bond and Band Engineering Group School of Physical Science and TechnologySouthwest Jiaotong UniversityChengdu 610031People's Republic of China Xi'an Modern Chemistry Research Institute Xi'an 710065People's Republic of China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi'an 710072People's Republic of China

As an energetic material of great interest,the work capacity of dihydroxylammonium 5,5’-bistetrazole-1,1’-diolate(TKX-50)has been questioned *** some research groups have explored the reasons for the low working ability of TKX-50,the plane impact experiment on powdered TKX-50 is obviously closer to the practical application,and the conclusions based on this are more ***,we performed shock Hugoniot measurements of powdered TKX-50 between 5.65 and 16.29 *** plane impact experiments of powdered TKX-50 were carried out and the shocked Raman spectra were *** Raman spectroscopy analysis,a new peak of powdered TKX-50 was found between19.47 GPa and 24.96 GPa,which may be caused by decomposition/phase transition and was related with the low work capacity.

关键词： Powdered TKX-50 Hugoniot Raman Decomposition Phase transition

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Localization method of subsynchronous oscillation source based on high-resolution time-frequency distribution image and CNN

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Global Energy Interconnection 2024年第1期7卷 1-13页

作者： Hui liu yundan Cheng Yanhui Xu Guanqun Sun Rusi Chen Xiaodong Yu Institute of Electric Power Systems School of Electrical and Electronic EngineeringNorth China Electric Power UniversityBeijing 102206P.R.China Electric Power Research Institute of State Grid Hubei Electric Power Co. Ltd.Wuhan 430077P.R.China Central China Branch of State Grid Corporation of China Wuhan 430077P.R.China

The penetration of new energy sources such as wind power is increasing,which consequently increases the occurrence rate of subsynchronous oscillation ***,existing subsynchronous oscillation source-identification methods primarily analyze fixed-mode oscillations and rarely consider time-varying features,such as frequency drift,caused by the random volatility of wind farms when oscillations *** paper proposes a subsynchronous oscillation sourcelocalization method that involves an enhanced short-time Fourier transform and a convolutional neural network(CNN).First,an enhanced STFT is performed to secure high-resolution time-frequency distribution(TFD)images from the measured data of the generation unit ***,these TFD images are amalgamated to form a subsynchronous oscillation feature map that serves as input to the CNN to train the localization ***,the trained CNN model realizes the online localization of subsynchronous oscillation *** effectiveness and accuracy of the proposed method are validated via multimachine system models simulating forced and natural oscillation events using the Power Systems Computer Aided Design *** results show that the proposed method can localize subsynchronous oscillation sources online while considering unpredictable fluctuations in wind farms,thus providing a foundation for oscillation suppression in practical engineering scenarios.

关键词： Subsynchronous oscillation source localization Synchronous squeezing transform Enhanced short-time Fourier transform Convolutional neural networks

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Correction: Genomic diversity and ecological distribution of marine Pseudoalteromonas phages

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Marine Life Science & Technology 2023年第2期5卷 286-288页

作者： Kaiyang Zheng Yue Dong Yantao Liang yundan liu Xinran Zhang Wenjing Zhang Ziyue Wang Hongbing Shao Yeong Yik Sung Wen Jye Mok Li Lian Wong Andrew McMinn Min Wang College of Marine Life Sciences Institute of Evolution and Marine Biodiversityand Frontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266100China UMT-OUC Joint Center for Marine Studies Qingdao 266003China Institute of Marine Biotechnology Universiti Malaysia Terengganu(UMT)21030 Kuala NerusMalaysia Institute for Marine and Antarctic Studies University of TasmaniaHobartAustralia Haide College Ocean University of ChinaQingdao 266100China The Afliated Hospital of Qingdao University Qingdao 266000China

In this article the graphics relating to Figs.2 and 3 captions had been interchanged;the fgure(s)should have appeared as shown *** original article has been *** Access This article is licensed under a Creative Commons... 详细信息

关键词： Open Creative Access License

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他汀类降血脂药物作用分子机制及临床应用进展

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首都食品与医药 2022年第21期29卷 18-21页

作者：刘蕴丹天津市武清区人民医院天津301700

高血脂是多种心脑血管疾病的危险因素,血脂长期处于高水平,可导致患者血管内膜损伤、发生脂质斑块进而发生动脉粥样硬化引发缺血性心脑血管疾病.因此,控制人群血脂水平,是预防和降低心脑血管疾病发生风险的重要举措.他汀类是目前临床上... 详细信息

高血脂是多种心脑血管疾病的危险因素,血脂长期处于高水平,可导致患者血管内膜损伤、发生脂质斑块进而发生动脉粥样硬化引发缺血性心脑血管疾病.因此,控制人群血脂水平,是预防和降低心脑血管疾病发生风险的重要举措.他汀类是目前临床上应用最为广泛的一类降血脂药物,其通过选择性的竞争性抑制HMG-CoA还原酶,同时可以增加肝脏表面的低密度脂蛋白受体的数量,从而辅助降低胆固醇等血脂水平.此文对近年来他汀类降血脂药物作用分子机制及临床应用文献进行了复习,并总结报道如下.

关键词：他汀类药物血脂炎性反应

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次同步振荡在交直流电网中传播的关键影响因素

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现代电力 2024年第2期41卷 219-229页

作者：徐衍会刘慧成蕴丹华北电力大学电气与电子工程学院北京市昌平区102206

随着“双高”电力系统的发展,次同步振荡问题日益凸出,亟需研究交直流线路次同步振荡传播的关键影响因素。从系统响应量测时序数据着手,提出了一种次同步振荡传播关键影响因素定量分析方法。首先,基于自适应噪声完全集合经验模态分解(co... 详细信息

随着“双高”电力系统的发展,次同步振荡问题日益凸出,亟需研究交直流线路次同步振荡传播的关键影响因素。从系统响应量测时序数据着手,提出了一种次同步振荡传播关键影响因素定量分析方法。首先,基于自适应噪声完全集合经验模态分解(complete ensemble empirical mode decomposition, CEEMDAN)的改进小波阈值去噪方法对量测数据进行降噪处理,减少噪声对Prony分析的影响;其次,基于次同步振荡传播各影响因素的相关系数和互信息量建立相关性评价组合模型;最后,计算交直流不同参数在综合模型中的评价指标,得出次同步振荡在交直流线路中传播的关键影响因素。通过在PSCAD搭建2区域4机系统进行分析,结果表明:影响交流线路次同步振荡传播的极强相关参数为交流线路潮流,影响直流线路次同步振荡传播的极强相关参数为次同步振荡频率下交流线路阻抗特性。

关键词：次同步振荡 Prony算法 CEEMDAN分解小波阈值去噪相关性分析

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文化自信语境下中华优秀传统文化“双创”探究

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艺术科技 2022年第20期35卷 81-83页

作者：刘云丹王文算贵州大学马克思主义学院贵州贵阳550025

文化是促进一个民族生存发展的纽带,是滋养一个民族文明进步的精神根基。推动中华优秀传统文化“双创”有助于坚定文化自信,实现文化复兴,为实现中华民族伟大复兴贡献力量。文化自信凝聚着一个民族的志气、骨气和底气。在文化自信语境下... 详细信息

文化是促进一个民族生存发展的纽带,是滋养一个民族文明进步的精神根基。推动中华优秀传统文化“双创”有助于坚定文化自信,实现文化复兴,为实现中华民族伟大复兴贡献力量。文化自信凝聚着一个民族的志气、骨气和底气。在文化自信语境下,文章主要分析“双创”与文化自信的内在关联,探索中华优秀传统文化“双创”的逻辑动因,并结合时代和实践的要求,提出中华优秀传统文化“双创”的方法路径。

关键词：文化自信中华优秀传统文化 “双创”

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