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Emulsion confined block copolymer self-assembly:Recent progress and prospect

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Nano Research 2023年第1期16卷 564-582页

作者： Yilin liu Fangfang Ke yuanchao li Yi Shi Zhen Zhang Yongming Chen School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510006China

In the past few decades,significant progress in block copolymer self-assembly has been achieved in many fields,and with the development of nanoscience and nanotechnology,more and more complex situations need block copolymer self-assembly based nanoplatforms having more complex structures for specific multimodal or multiplexed *** the combination of emulsification and self-assembly of the block copolymer,different materials with exotic architectures and functions could be combined within an entity,such as controlled vesicles,Janus particles,and composite particles which are more like ideal *** designs can show their different desired properties depending upon the application situation,including molecular delivery,surfactants,and multicolor *** review will provide a complete summary of the optimization and the synthesis method for the recently designed emulsion confined block copolymer assemblies,and also the challenges and limitations this method faces,and the potential solutions in this field.

关键词： emulsion block copolymer confined volume self-assembly exotic architectures

Performance of ecological restoration in an impaired coral reef in the Wuzhizhou Island, Sanya, China

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Journal of Oceanology and limnology 2021年第1期39卷 135-147页

作者： Xinqing ZHENG yuanchao li Jilin liANG Rongcheng liN Daoru WANG Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China Hainan Academy of Ocean and Fisheries Science Haikou 570125China Fujian Provincial Station for Field Observation and Research of Island and Costal Zone in Zhangzhou Xiamen 361005China Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration Xiamen 361005China

Coral restoration is becoming popular to help restoring degraded coral ***,few studies have tried to monitor the long-term recovery of coral reefs,which makes it diffi cult to assess the performance of the *** monitored the growth of three transplanted Acropora corals and naturally-attached Pocillopora damicornis on artifi cial reefs(ARs)from October 2014 to September 2018 during which there were several attacks of *** show that two staghorn Acropora species had the highest growth rates(11.0–12.1 cm/a),followed by table coral ***(5.6 cm/a)and ***(4.8 cm/a).A linear growth pattern was found for the three Acropora species;the pattern gradually slowed in *** was a strong interspecifi c competition for space among the corals on ARs,and it led to the sharply declined occurrence of slow-growing *** colonies in *** recovery was successful at the Wuzhizhou Island and quickly increased AR ***,the ARs made of metal frames fail to resist the direct attack from a catastrophic ***,concrete and environmentalfriendly materials should be used in future *** study is the fi rst report on long-term monitoring and assessment of coral reef restoration in *** results off er future guide of reef restoration for impaired coral reefs in regions easily aff ected by typhoons.

关键词： coral restoration artifi cial reefs coral transplantation Acropora Pocillopora damicornis

Studies on the Chemical Constituents and Bioactivities of Tripterygium Wilfordii

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Chemical Research in Chinese Universities 2001年第Z1期17卷 228-229页

作者： li yuanchao Shanghai Institute of Materia Medica Chinese Academy of Sciences

Tripterygium wilfordii Hook (TW) is a medicinal plant distributed widely in southern china. This plant was recently found to possess anti-inflammatory, antitumor and immunosuppressive activities. Some preparation of the plant root has been used for the treatment of rheumatoid arthritis, systemic acne rosacea, nephritis and some skin diseases. Chemical studies on this plant and its preparation have shown they contain a large number of sesquiterpenoid, diterpenoids, triterpenoids and alkaloids in which some diterpene triepoxy lactones such as triptolide and triptonide etc are considered as mainly active compounds.

关键词： Tripterygium Wilfordii rheumatoid arthritis southern china skin diseases

Stereospecific Synthesis of Drospirenone

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Chinese Journal of Chemistry 2013年第1期31卷 15-17页

作者： Gang Deng Zuogang Huang Xiaolong Zhao Zheng li yuanchao li Biao Jiang Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201210 China Department of Medicinal Chemistry Shanghai Institute ofMateria Medica Chinese Academy of Sciences Shang- hai 201203 China

A procedure for the stereospecific synthesis of drospirenone has been developed. The key steps included the stereospecific reduction of the C7-tertiary alcohol with ZnI2/Et3SiH, a novel mild and stereospecific tertiar... 详细信息

关键词： drospirenone stereospecific synthesis ionic hydrogenation Oppenauer oxidation cyclopropanation

Polyp-Canal Reconstruction Reveals Evolution Toward Complexity in Corals

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Research 2024年第1期2023卷 417-428页

作者： Yixin li Xin liao Xin Wang yuanchao li Hongwei Zhao Yunpeng Zhao Junyuan Chen Chunpeng He Zuhong Lu State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China Guangxi Key Lab of Mangrove Conservation and Utilization Guangxi Mangrove Research CenterGuangxi Academy of SciencesBeihai 536000China Hainan Academy of Ocean and Fishery Sciences Haikou 571126China State Key Laboratory of Marine Resources Utilization in South China Sea Hainan UniversityHaikou 570228China Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences39 East Beijing RoadNanjing 210008China

Modern scleractinian corals are classified into robust,complex,and basal clades through comparative molecular ***,only few morphological or biological criteria can systematically determine the evolutionary trajectories of these major scleractinian coral ***,we obtained the structural information of 21 scleractinian coral species representing robust and complex clades:High-resolution micro-computed tomography was used to reconstruct the polyp-canal systems in their colonies and to visualize the dynamic polyp growth *** found that the emergence of mesh-like canals may distinguish representatives of complex and robust *** differences in polyp-canal connections suggest distinct evolutionary trajectories among coral species:The formation of the canal network promoted the development of more complex coral structures,and coral polyps within this network formed calices of very similar volume,following precise axial growth *** influence of individual polyps on the coral colony becomes less significant as coral structures become more complex,and coral species with more complicated polyp-canal systems occupied niches more *** work supplements current evolutionary studies on reef-building corals,providing insight for further studies on coral growth patterns.

关键词： Coral representing directions

Coral Ba/Ca and Mn/Ca Ratios as Proxies of Precipitation and Terrestrial Input at the Eastern Offshore Area of Hainan Island

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Journal of Ocean University of China 2017年第6期16卷 1072-1080页

作者： JIANG Qiaowen CAO Zhimin WANG Daoru li yuanchao WU Zhongjie NI Jianyu School of Marine Geosciences Ocean University of China Qingdao 266100 P. R. China Second Institute of Oceanography State Ocean Administration Hangzhou 310012 P. R. China Hainan Academy of Ocean and Fisheries Sciences Haikou 570125 P. R. China

Geochemical ratios in coral reef skeletons could be used as proxies to reconstruct past climatological and environmental records in data-poor regions. Using a 103-year data set(1902 to 2005), the annual variations in Ba/Ca and Mn/Ca ratios of Porites lutea skeletons at an eastern offshore area of Hainan Island(19?12'28.4''N, 110?37'38.8''E) were analyzed using inductively coupled plasma-optic emission spectrometry(ICP-OES). The analysis results showed that Ba/Ca ratios varied from a minimum of 3.120 μmol mol^(-1) in 1903 to a maximum of 10.064 μmol mol^(-1) in 1944, with an average of 5.256 μmol mol^(-1). Mn/Ca ratios varied from 0.206 to 5.708 μmol mol^(-1) with an annual average of 1.234 μmol mol^(-1), with peak values in 2001, 1964 and 1932, that correlated with strong rainfall events caused by typhoons. Variation in Ba/Ca and Mn/Ca ratios were compared with available river discharge and precipitation records, providing insight into past climatological events. Human activities and their indirect effects could impact the strength of the relationship between Ba/Ca and Mn/Ca ratios and observed precipitation and terrestrial input in the future.

关键词： Porites lutea eastern offshore area of Hainan Island Ba/Ca and Mn/Ca ratios terrigenous input precipitation climate proxy records

Peaceful Development and Mutually Beneficial Cooperation： Working Together for a Beautiful Asia

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Qiu Shi 2013年第4期5卷 38-44页

作者： li yuanchao Chinese Vice-President li yuanchao at a special session of the International Conference of Asian Political Parties (ICAPP)

Promoting a Scientific Outlook on Talent

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Qiu Shi 2012年第2期4卷 46-52页

作者： li yuanchao

Cooperative Development To Build South Asia Lasting Peace

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Peace 2013年第4期 5-7页

作者： li yuanchao CCCPC Political Bureau

Honorable Speaker Shirin Sharmin Chaudhury,Honorable Speaker Abdul Rouf Ibrahimi,Distinguished Guests,Ladies and Gentlemen,Today,the Commemoration of the International Day of Peace 2013 and China-South Asia Peace and Development Forum is held in the beautiful province of *** behalf of the Chinese government,I wish to extend warmest welcome to all our guests.

关键词： SAARC Asia Cooperative Development To Build South Asia Lasting Peace