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Recent progress and strategies of cathodes toward polysulfides shuttle restriction for lithium-sulfur batteries

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Rare Metals 2024年第9期43卷 4132-4161页

作者： Xing-You Rao Shuang-fei Xiang Jian Zhou Zhen Zhang Xiang-Yu Xu Yuan-Yuan Xu Xin-Chi Zhou Zheng-Dao Pan Su-Chong Tan Shi-Xing Dong Zhou-Lu wang Yu-Tong Wu yun-Lei Zhou Xiang Liu Yi Zhang Shan Jiang School of Energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China School of Materials Science and Engineering and Institute of Smart Fiber Materials Zhejiang Sci-Tech UniversityHangzhou 310018China JiangSu Sailboat Petrochemical Co. LtdLianyungang 222000China Hangzhou Institute of Technology Xidian UniversityHangzhou 311200China

Lithium-sulfur batteries(LSBs)have already developed into one of the most promising new-generation high-energy density electrochemical energy storage systems with outstanding features including high-energy density,low cost,and environmental ***,the development and commercialization path of LSBs still presents significant limitations and challenges,particularly the notorious shuttle effect triggered by soluble longchain lithium polysulfides(LiPSs),which inevitably leads to low utilization of cathode active sulfur and high battery capacity degradation,short cycle life,*** research efforts have been conducted to develop various sulfur host materials capable of effectively restricting the shuttle *** review firstly introduces the fundamental electrochemical aspects of LSBs,followed by a comprehensive analysis of the mechanism underlying the shuttle effect in Li–S batteries and its profound influence on various battery components as well as the overall battery ***,recent advances and strategies are systematically reviewed,including physical confinement,chemisorption,and catalytic conversion of sulfur hosts for restricting LiPSs shuttle *** interplay mechanisms of sulfur hosts and LiPSs are discussed in detail and the structural advantages of different host materials are ***,key insights for the rational design of advanced host materials for LSBs are provided,and the upcoming challenges and the prospects for sulfur host materials in lithium-sulfur batteries are also explored.

关键词： Lithium-sulfur batteries Polysulfides Shuttle effect Host

红枣蜂蜜低醇饮料澄清方法澄清效果的比较研究

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食品科技 2002年第1期27卷 51-52,50页

作者：王玲尚云青王菲叶清湛江海洋大学食品科学与工程系云南中医学院 650200

对三种澄清方法在红枣蜂蜜低醇饮料上的应用进行了比较研究。结果表明:在红枣蜂蜜低醇饮料中添加0.075%的皂土,常温下静置4d后过滤,即可得到透光率为98%以上澄清透明稳定性好的成品,而明胶—单宁法和果胶酶法虽有一定程度的澄清作用,但... 详细信息

对三种澄清方法在红枣蜂蜜低醇饮料上的应用进行了比较研究。结果表明:在红枣蜂蜜低醇饮料中添加0.075%的皂土,常温下静置4d后过滤,即可得到透光率为98%以上澄清透明稳定性好的成品,而明胶—单宁法和果胶酶法虽有一定程度的澄清作用,但成品稳定性较差。

关键词：澄清效果稳定性皂土法红枣蜂蜜低醇饮料澄清方法比较

Rapid identification of full-length genome and tracing variations of monkeypox virus in clinical specimens based on mNGS and amplicon sequencing

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Virologica Sinica 2024年第1期39卷 134-143页

作者： Changcheng Wu Ruhan A Sheng Ye fei Ye Weibang Huo Roujian Lu Yue Tang Jianwei Yang Xuehong Meng yun Tang Shuang Chen Li Zhao Baoying Huang Zhongxian Zhang Yuda Chen Dongfang Li Wenling wang Ke-jia Shan Jian Lu Wenjie Tan NHC Key Laboratory of Biosafety National Institute for Viral Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing100052China Chongqing Municipal Key Laboratory for High Pathogenic Microbes Chongqing Center for Disease Control and PreventionChongqing400042China MGI BGI-ShenzhenShenzhen518083China Thermo Fisher Scientific Beijing100013China School of Public Health Baotou Medical CollegeBaotou014030China BGI PathoGenesis Pharmaceutical Technology Shenzhen518000China State Key Laboratory of Protein and Plant Gene Research Center for BioinformaticsSchool of Life SciencesPeking UniversityBeijing100871China College of Life Sciences University of Chinese Academy of SciencesBeijing100049China

The monkeypox virus(MPXV)has triggered a current outbreak *** sequencing of MPXV and rapid tracing of genetic variants will benefit disease diagnosis and *** is a significant challenge but necessary to optimize the strategy and application of rapid full-length genome identification and to track variations of MPXV in clinical specimens with low viral loads,as it is one of the DNA viruses with the largest genome and the most AT-biased,and has a significant number of tandem *** we evaluated the performance of metagenomic and amplicon sequencing techniques,and three sequencing platforms in MPXV genome sequencing based on multiple clinical specimens of five mpox cases in Chinese *** rapidly identified the full-length genome of MPXV with the assembly of accurate tandem repeats in multiple clinical *** sequencing enables cost-effective and rapid sequencing of clinical specimens to obtain high-quality MPXV ***-generation sequencing facilitates the assembly of the terminal tandem repeat regions in the monkeypox virus genome and corrects a common misassembly in published ***,several intra-host single nucleotide variations were identified in the first imported mpox *** study offers an evaluation of various strategies aimed at identifying the complete genome of MPXV in clinical *** findings of this study will significantly enhance the surveillance of MPXV.

关键词： Monkeypox virus(MPXV) Metagenomic Next generation sequencing Amplicon Third-generation sequencing

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Sr原子里德伯态的|m_l|相关场电离阈

物理学报 1993年第2期42卷 231-236页

作者：郦菁徐云飞王云仙张森浙江大学物理系杭州310027

用偏振激光两步激发,获得不同│m_1│值的里德伯态,在2.4kV/cm以下的电场范围内,测定了Sr原子5snd(n=22-27),│m:│=0,1,2各里德伯态的电离阈值。理论给出了二阶近似下│m_1│有关的电离阈,并与测量结果作了对照。

关键词：锶里德伯态场电离阈碱土金属

凝聚相材料分子解离动力学的飞秒瞬态光栅光谱研究

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物理学报 2017年第3期66卷 50-58页

作者：吴红琳宋云飞王阳于国洋杨延强中国工程物理研究院流体物理研究所冲击波与爆炸物理国防科技重点实验室成都610200 山东省科学院激光研究所青岛先进光子技术研究中心青岛266000

凝聚相条件下,受分子间相互作用的影响,分子的解离机理通常不同于孤立分子.如何在凝聚相材料中有效地监测分子反应的进程和产物是目前急需解决的一个技术难题.本文介绍了飞秒瞬态光栅光谱技术在凝聚相材料解离动力学研究中的应用.作为... 详细信息

凝聚相条件下,受分子间相互作用的影响,分子的解离机理通常不同于孤立分子.如何在凝聚相材料中有效地监测分子反应的进程和产物是目前急需解决的一个技术难题.本文介绍了飞秒瞬态光栅光谱技术在凝聚相材料解离动力学研究中的应用.作为相干光谱技术的一种,瞬态光栅光谱的信号强度高、无背底,因此能够有效地鉴别体系中的微量反应产物.通过对碘甲烷、硝基甲烷等模型体系的研究,验证了瞬态光栅技术不仅能够在时域上给出电子态的弛豫信息,还能够在光谱上同时监测反应物和产物以及分子或基团的振动.凝聚相条件下的解离动力学研究对于了解生化、爆炸等反应的机理有非常重要的意义,因此飞秒瞬态光栅技术在这方面具有广阔的应用空间.此外,作为一种非接触的诊断技术,瞬态光栅很容易和高温、高压等条件结合,因此瞬态光栅技术在研究材料的相变动力学、高压合成等方面也具有潜在的应用价值.

关键词：飞秒瞬态光栅分子反应动力学碘甲烷硝基甲烷

Enhanced degradation of florfenicol by microscale SiC/Fe:Dechlorination via hydrogenolysis

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Chinese Chemical Letters 2024年第7期35卷 218-221页

作者： yun-fei Zhang Chun-Hui Zhang Jian-Hui Xu Lei Li Dan Li Jin-Hong Fan Jiale Gao Xin Quan Qi Wu Yue Zou Yan-Ling Liu Dongguan University of Technology School of Environment and Civil EngineeringDongguan 523830China State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Herein,the degradation of florfenicol(FLO)over zero-valent iron(ZVI)enhanced by SiC was systematically *** was found that 5 g/L of ZVI/SiC(1:3)at pH 3.0 could completely degrade 20 mg/L of FLO within 1 h,with a Kobsvalue of 0.0873 min^(-1),12.5 times greater than that of pure ZVI(0.0069 min^(-1)).Vibrating sample magnetometer(VSM)characterizations revealed that the use of SiC supporter reduces the magnetic intensity of ZVI,which mitigates iron particle agglomeration,increases Brunauer-Emmett-Teller(BET)surface area,and enhances FLO degradation ***,ZVI/SiC exhibits a much lower hydrogen evolution potential(HEP)and significantly higher corrosion currents compared to pure *** was proposed to undergo degradation via reductive dechlorination,involving a hydrogenolysis mechanism that entails the cleavage of theσ*** study provides new insights into the reduction hydrogenation mechanism of ZVI.

关键词： Zero-valent iron Silicon carbide Reductive dechlorination Hydrogenolysis Florfenicol

CentIER:Accurate centromere identification for plant genomes

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Plant Communications 2024年第10期5卷 12-15页

作者： Dong Xu Jinbao Yang Huaming Wen Wenle Feng Xiaohui Zhang Xingqi Hui Junyang Yue yun Xu fei Chen Weihua Pan Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Rubber Research Institute Chinese Academy of Tropical Agricultural ScienceHaikouHainan 571101China School of Computer Science and Technology University of Science and Technology of ChinaHefeiAnhui 230026China College of Informatics Huazhong Agricultural UniversityWuhanHubei 430070China School of Horticulture Anhui Agricultural UniversityHefeiAnhui 230026China Nan Fan College Hainan UniversitySanyaHainan 572000China

Dear Editor,Centromeres,the basis for cell division,offer essential insights into cell dynamics,genome stability,and evolutionary processes(McKinley and Cheeseman,2016).Because of ultra-high complexity,high-quality sequences of centromeric regions have long been difficult to obtain,hindering studies of centromere function,evolution,and variation.

关键词： hinder insight stability

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面向时间序列的微博话题演化模型研究

计算机科学 2017年第8期44卷 270-273,279页

作者：王振飞刘凯莉郑志蕴王飞郑州大学信息工程学院郑州450001

话题演化研究有助于追踪用户的喜好和话题的发展趋势,对于舆情预警具有重要意义。目前,话题演化方法注重运用话题生成模型实现话题演化分析,忽略了话题中时间因素和背景词的存在。以传统话题生成模型LDA为基础,将其扩展为微博话题生成模... 详细信息

话题演化研究有助于追踪用户的喜好和话题的发展趋势,对于舆情预警具有重要意义。目前,话题演化方法注重运用话题生成模型实现话题演化分析,忽略了话题中时间因素和背景词的存在。以传统话题生成模型LDA为基础,将其扩展为微博话题生成模型MTLDA。MTLDA模型增加了对背景词的考虑,提高了话题生成的效率,同时对微博话题集进行时间片划分,利用KL距离计算相邻时间片话题距离,分析话题演化情况。以新浪微博数据为例进行实验,结果表明,MTLDA模型通过时间片划分完成了微博话题的生成,话题演化结果与实际情况吻合。

关键词：微博话题演化社交网络 MTLDA模型 KL距离

Dysbiosis promotes recurrence of adenomatous polyps in the distal colorectum

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3600-3623页

作者： Li-Li Yin Ping-Qian Qi yun-fei Hu Xiao-Jun Fu Rui-Shan He Meng-Meng wang Yan-Juan Deng Su-Yi Xiong Qi-Wen Yu Jin-Ping Hu Lv Zhou Zhi-Bin Zhou Ying Xiong Huan Deng The Affiliated Rehabilitation Hospital Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina The Fourth Affiliated Hospital Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina The Second College of Clinical Medicine Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Tumor Immunology Institute Nanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of General Medicine The Second College of Clinical MedicineJiangxi Medical CollegeNanchang UniversityNanchang 330031Jiangxi ProvinceChina The Ministry of Education Basic Research and Innovation Center for the Targeted Therapeutics of Solid Tumors Jiangxi Medical CollegeNanchang UniversityNanchang 330031Jiangxi ProvinceChina

BACKGROUND Colorectal polyps,which are characterized by a high recurrence rate,represent preneoplastic conditions of the *** to unclear mechanisms of pathogenesis,first-line therapies for non-hereditary recurrent colorectal polyps are limited to endoscopic *** recent studies suggest a mechanistic link between intestinal dysbiosis and polyps,the exact compositions and roles of bacteria in the mucosa around the lesions,rather than feces,remain *** To clarify the composition and diversity of bacteria in the mucosa surrounding or 10 cm distal to recurrent intestinal *** Mucosal samples were collected from four patients consistently with adenomatous polyps(Ade),seven consistently with non-Ade(Pol),ten with current Pol but previous Ade,and six healthy individuals,and bacterial patterns were evaluated by 16S rDNA *** discriminant analysis and Student’s t-tests were used to identify the genus-level bacteria differences between groups with different colorectal polyp ***’s correlation coefficients were used to evaluate the correlation between intestinal bacteria at the genus level and clinical *** The results confirmed a decreased level of probiotics and an enrichment of pathogenic bacteria in patients with all types of polyps compared to healthy *** changes were not restricted to the mucosa within 0.5 cm adjacent to the polyps,but also existed in histologically normal tissue 10 cm distal from the *** differences in bacterial diversity were observed in the mucosa from individuals with normal conditions,Pol,and *** abundance of Gram-negative bacteria,including Klebsiella,Plesiomonas,and Cronobacter,was observed in Pol group and Ade group,suggesting that resistance to antibiotics may be one risk factor for bacterium-related harmful ***,age and gender were linked to bacteria changes,indicating the potential involvement of sex hormone

关键词： Dysbiosis Biopsy Polyp Bacteria Colorectum