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Lithium polysulfide solvation and speciation in the aprotic lithium-sulfur batteries

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Particuology 2024年第6期89卷 238-245页

作者： Jinhao Zhang Qingshan Fu Peng Li Ruibo Linghu Xiaozhong Fan Haibin Lin Juncao Bian Songbai Han Gengzhi Sun Long Kong Frontiers Science Center for Flexible Electronics and Xi’an institute of Flexible Electronics Northwestern Polytechnical UniversityXi’an710129China China Automotive Innovation Corporation Nanjing211100China Academy for Advanced Interdisciplinary studies Southern University of Science and TechnologyShenzhen518055China institute of Advanced Materials Nanjing Tech UniversityNanjing211816China

Fingerprinting sulfur speciation in aprotic electrolytes is a key to understand fundamental chemistry and design well-performing lithium–sulfur(Li–S)*** polysulfide(LiPS)dissolution and deposition in ether-based electrolytes during redox reactions have been probed and established by spectroscopy and ***,detailed LiPS structure and solvation properties influenced by conventional and newly developed electrolytes remain elusive,which exert fundamental challenges and practical difficulties in decoupling battery performance from electrolyte *** perspective aims to provide timely information to uncover underlying mechanisms that rein in sulfur speciation by considering the charge density of LiPSs and the coordination strength of solvents/*** discussion starts with unlocking the baseline electrolyte formulation to investigate its role in LiPS formation and *** that,the term coordination strength is used instead of donor number and dielectric constant to describe interactions between solvents and LiPSs and to reveal LiPS structure *** work is expected to encourage the discovery of new electrolyte working mechanisms to develop energy-dense and power-intensive Li–S batteries.

关键词： Sulfur speciation Redox kinetics Coordination strength Solvation chemistry Lithium-sulfur batteries

New Drivers of Development China’s reform and opening up has benefitted Africa in multifarious ways

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ChinAfrica 2024年第8期16卷 34-35页

作者： TANG XIAOYANG WANG HENG WANG JINJIE Department of International Relations Tsinghua University institute of African studies Zhejiang Normal University institute of African studies Peking University

Joaquim Chissano,former President of Mozambique,has said that Africa has gained much from China’s economic development,particularly due to its reform and opening up *** inspires African nations in their quest for national renewal and creates new development prospects through mutually beneficial *** the establishment of the Forum on China-Africa Cooperation in 2000 and the launch of the Belt and Road Initiative in 2013,exchanges between the two sides have *** such as the China-Africa Economic and Trade Expo and the China International Import Expo have further strengthened this momentum.

关键词： intensified Africa gained

Community perspectives on the effectiveness of watershed management institutions in the Himalayas

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Journal of Mountain Science 2024年第4期21卷 1119-1139页

作者： Nisha SILWAL Nabin DHUNGANA Rajan SUBEDI Suraj UPADHAYA Chun-Hung LEE Natural Resources Conservation Nepal(NRCN) ChitwanP.O.Box 44200Nepal Department of Natural Resources and Environmental studies College of Environmental StudiesNational Dong Hwa UniversityHualien 97401Chinese Taipei institute of Forestry Tribhuvan UniversityPokharaP.O.Box 43Nepal School of Agriculture and Natural Resources Kentucky State UniversityFrankfortKY 40601USA Himalayan Conservation and Research institute DolpaP.O.Box 21400Nepal

The sustainability of environmental management initiatives,such as watershed management programs,relies on the presence of effective institutions at the watershed ***,there needs to be more empirical evidence from evaluating the effectiveness of watershed-level ***,this study presents a pioneering effort to evaluate the effectiveness of Nepal’s first watershed conservation committee at the watershed scale,focusing on the case of the Khageri Khola watershed in Central *** study involved conducting a household survey,key informant interviews,focus group discussions,and field observations to collect and analyze the *** analysis,index value calculation,and chi-square statistics were then employed to summarize the results regarding local respondents’perceptions of twelve institutional characteristics,their rationalities,and their association with socio-demographic *** results reveal that the watershed conservation committee was perceived as performing well in managing the ***,good interaction,appropriate scale,technical,environmental,social,organizational,and government rationality were perceived as highly effective,with an average index value of less than *** contrast,clarity of objectives and economic rationality showed moderate effectiveness,with an average index value ranging from 0.36 to ***,the results suggested that adaptiveness,compliance capacity,and financial rationality merit increased attention,intending to improve their ***,the results showed the association of socio-demographics with respondents’perceptions of various indicators of institutional characteristics and their ***,the study provides valuable insights for policymakers,researchers,and development practitioners charged with designing sustainable and effective programs and *** enhance the effectiveness and sustainability of watershed management programs,we recommen

关键词： Watershed Watershed institutions Indicators Institutional characteristics Rationalities Nepal.

Creating a New Discourse

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ChinAfrica 2024年第8期16卷 18-19页

作者： JIANG YAN MA WANG HENG institute of African studies Zhejiang Normal University

Knowledge sharing plays a key role in deepening China-Africa *** growing economic vitality,African nations are placing more emphasis on building their own knowledge *** firmly supports African countries in achieving i... 详细信息

关键词： own deepening independence

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

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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

Advancing the Modernization Drive of the Global South and Working Together to Build a Community with a Shared Future for Mankind

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Contemporary World 2024年第2期 39-43页

作者： Wang Heng institute of African studies at Zhejiang Normal University

The 13th Meeting of the China-Africa Think Tanks Forum took place in Dar es Salaam,Tanzania,on March 8,*** the theme of“China-African Practice:Building a Community with a Shared Future”,the forum delved into the major concerns and strategic cooperation between China and Africa in the new *** aimed to advance the implementation of various initiatives and accomplishments in China-Africa cooperation while also gathering insights for the upcoming session of the Forum on China-Africa Cooperation(FOCAC).

关键词： Together gathering Africa

Stay True to Your Convictions

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走进孔子（中英文） 2024年第3期 116-119页

作者： Yang Chaoming The Advanced institute for Confucian studies at Shandong University

As we embark on the journey of life,many of us may find ourselves perplexed,pondering the meaning of existence and contemplating how to live life to the *** these moments,we can turn to the timeless wisdom encapsulated in the Analects and seek guidance from *** text’s opening proposes the Master’s sagely exhortation—stay true to your convictions throughout your lifelong journey.

关键词： moments True life

A Special Celebration Sharing joy through cultural exchanges far away from home

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ChinAfrica 2024年第5期16卷 56-57页

作者： LIU SHAOJIE institute of African studies Zhejiang Normal University

Thanks to the scholarship granted to me by the China Scholarship Council under the Project on Innovative Talent in African studies,I had the incredible opportunity to spend six months living in Ibadan,Nigeria’s third-largest city,and study at the University of *** by teaching and eager to gain insights into local schools,I applied to be a Chinese teacher at Abiodun Metropolitan Schools.

关键词： spend exchanges granted

SO_(2)-Insertion induced enantioselective oxysulfonylation to access β-chiral sulfones with quaternary carbon stereocenters

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Science China Chemistry 2024年第3期67卷 908-913页

作者： Jun Zhang Xuefeng Wang Peiqi Wang Jiayuan Fang Shaoyu Li Jie Wu School of Pharmaceutical and Chemical Engineering&institute for Advanced studies Taizhou UniversityShanghai 200438China Department of Chemistry Fudan UniversityShanghai 200438China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

β-Chiral sulfones are structural motifs widely found in natural products and bioactive molecules, while also serving as important intermediates for the synthesis of valuable chiral scaffolds. In contrast to the rapid growth of sulfur dioxide insertion chemistry over the last decade, enantioselective catalytic variants for accessing β-chiral sulfones, especially those bearing a quaternary carbon stereocenter, remain rare. Herein, we report an enantioselective copper/bisoxazoline catalyzed oxysulfonylation of alkenes to yield isoxazolinyl-containing β-chiral sulfones bearing quaternary carbon stereocenters with moderate to excellent yields and up to 96:4 er. The advantage and irreplaceability of this sulfur dioxide insertion catalytic system have been demonstrated by achieving transformations clearly unavailable with the previously reported sulfonyl chloride system. Additionally,the recoverability of the new-developed bisoxazoline ligand L9 and its reusability without any erosion of the catalytic activity and enantioselectivity further demonstrate the usefulness of the protocol.

关键词： β-chiral sulfones sulfur dioxide insertion oxysulfonylation copper catalysis enantioselectivity