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Colloidal Virus Particles with Hierarchical Nanomorphology and Facile Biosurface Modification

Chinese Journal of Chemistry 2022年第8期40卷 946-952页

作者： Hailan Zhong Hao Wu Shuoran Chen liwei cao Changqing Ye Fan Xia Fengyu Li College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsGuangdong Engineering&Technology Research Centre of Graphene-like Materials and ProductsJinan UniversityGuangzhouGuangdong 510632China Research Center for Green Printing Nanophotonic Materials Jiangsu Key Laboratory for Environmental Functional MaterialsSuzhou University of Science and TechnologySuzhouJiangsu 215009China School of Materials Science and Engineering Zhengzhou UniversityZhengzhouHenan 450001China Zhejiang Institute China University of GeosciencesHangzhouZhejiang 311305China

Aiming to the enormous requirement for the epidemic defense researches,we designed and constructed a spherical colloidal virus particle(CVP)to mimic nature virus in morphology,physical,chemical and biological characteristics,via coating spiky protein on col-loidal nanoparticles(CNPs)core with bulge hierarchical *** novel virus-like surface nanoparticles can easily be *** physical,chemical nature and the formation mechanism of the prepared CVPs were characterized and *** synthesized CVPs are similar in size and envelope thickness to common natural *** was demonstrated that the diameter of CVPs is about 238±12 nm,including an 8 nm thickness protein crown with bulges of 33 nm in average *** CVPs with an isoelectric point of 4.5,meets the native virus property of negative charge under neutral *** protein crown enhances the roughness remarkably from 10 nm(CNPs)to 22 nm(CVPs)determined by atomic force *** to the biomimetic rough morphology,the CVPs show greatly superior cellular uptake performance compared to CNPs,ovalbumin(OVA)and smoothed col-loidal particles(SCPs).The formation mechanism of protein crown with specific thickness can be attributed to the electrostatic in-teraction,protein's flexible structure and specific *** results indicate that the as-prepared artificial virions mimic na-ture viruses in multi-dimension,in terms of size,surface rough morphology,surface negative charge and glycoprotein envelope *** synthetic colloidal virus particles pave a facile way toward engineering virus particles substitute for virus-related diseases prevention,diagnostics and cellular delivery vectors.

关键词： Nanoparticles Protein modifications Biomimetic synthesis Virus particles Cellular delivery

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Direct observation of oxygen vacancy formation and migration over ceria surface by in situ environmental transmission electron microscopy

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Journal of Rare Earths 2024年第4期42卷 676-682页

作者： Dawei Pang Wei Li Ningqiang Zhang Hong He Shengcheng Mao Yanhui Chen liwei cao Chong Li Ang Li Xiaodong Han Beijing Key Laboratory of Solid Microstructure and Properties Department of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory for Green Catalysis and Separation The Faculty of Environment and LifeBeijing University of TechnologyBeijing10124China International Joint Research Laboratory for Quantum Functional Materials of Henan School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450001China

The extremely high structural tolerance of ceria to oxygen vacancies(Ov)has made it a desirable catalytic material for the hydrocarbon oxidation to chemicals and pharmaceuticals and the reduction of gaseous *** is proposed that the formation and diffusion of Ov originate from its outstanding reduction ***,the formation and diffusion process of Ov over the surface of ceria at the atomic level is still ***,the structural and valence evolution of CeO_(2)(111)surfaces in reductive,oxidative and vacuum environments from room temperature up to 700℃was studied with in situ aberration-corrected environmental transmission electron microscopy(ETEM)*** is found to form under a high vacuum at elevated temperatures;however,the surface can recover to the initial state through the adsorption of oxygen atoms in an oxygen-contained ***,in hydrogen environment,the step-CeO_(2)(111)surface is not stable at elevated temperatures;thus,the steps tend to be eliminated with increasing *** with first-principles density function calculations(DFT),it is proposed that O-terminated surfaces would develop in a hypoxic environment due to the dynamic diffusion of Ov from the outer surface to the ***,in a reductive environment,H2 facilitates the formation and diffusion of Ov while Ce-terminated surfaces *** results reveal dynamic atomic-scale interplay between the nanoceria surface and gas,thereby providing fundamental insights into the Ov-dependent reaction of nano-CeO_(2) during catalytic processes.

关键词： Ceria Direct observation In situ ETEM Oxygen vacancy Density function calculations Rareearths

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Underwater Superoleophobic-Oleophilic Chips for Femtomolar Aflatoxins Identification

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Chinese Journal of Chemistry 2022年第12期40卷 1464-1470页

作者： liwei cao Lizhen Wu Cheng Li Yidan Tu Hao Wu Bin Shen Jianxin Meng Xin-Qi Hao Bing Yan Feng-yu Li Fan Xia Yu Huang College of Chemistry and Materials Science Jinan UniversityGuangzhouGuangdong 510632China State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Material Science and ChemistryChina University of GeosciencesWuhanHubei 430074China School of Environmental Studies China University of GeosciencesWuhanHubei 430074China Zhejiang Institute China University of GeosciencesHangzhouZhejiang 311305China School of Materials Science and Engineering Zhengzhou UniversityZhengzhouHenan 450001China

Underwater superoleophobic-oleophilic chips were developed to achieve oil extracting from aqueous solution and oil-droplet con-densing to preset *** double-hierarchical(extracting-condensing)enrichment strategy drastically improves the sensitivi-ty for organic contaminants or components,whose signal amplification approaches 459.7 times that of primary solution and 25.9 times that of single condensing enrichment *** to femtomolar limit of detection(2.6×10^(-15)mol/L)sensitivity and 6 vari-ous aflatoxins or mildewed foods identification demonstrate the significance and promotion for environment monitoring,water pu-rification,and so on.

关键词： Aflatoxins Fluorescence Nanostructures Sensors Underwater superoleophobic-oleophilic

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基于区域城市理论的重庆主城区空间规划策略

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规划师 2010年第11期26卷 24-29页

作者：易峥曹春霞曹力维重庆市规划设计研究院

中国城市化正超越城市范畴向区域扩散。空间规划应着手终结城市蔓延,构建区域城市。重庆主城区正处于集聚向集聚与分散相结合的空间发展的转型阶段,应树立区域观念,发挥空间规划对资源合理配置的作用,从生态空间、城乡空间、城市拓展空... 详细信息

中国城市化正超越城市范畴向区域扩散。空间规划应着手终结城市蔓延,构建区域城市。重庆主城区正处于集聚向集聚与分散相结合的空间发展的转型阶段,应树立区域观念,发挥空间规划对资源合理配置的作用,从生态空间、城乡空间、城市拓展空间及新区空间4个方面提出规划策略,实现可持续的区域城市增长。

关键词：区域城市空间规划策略重庆主城区

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产业转移与重庆市产业发展路径研究

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城市规划 2010年第2期34卷 84-88页

作者：曹力维易峥何波重庆市规划设计研究院重庆市规划设计研究院城乡发展战略研究所

近年来,国际产业开始出现产业链高端向我国延伸的趋势,东部地区在经过十几年的飞速发展以后,人地关系矛盾日益突出,用地十分紧张,部分产业已开始向中西部梯度转移。面对国内外产业转移,重庆作为我国内陆承东启西的枢纽地区,将获得巨大... 详细信息

近年来,国际产业开始出现产业链高端向我国延伸的趋势,东部地区在经过十几年的飞速发展以后,人地关系矛盾日益突出,用地十分紧张,部分产业已开始向中西部梯度转移。面对国内外产业转移,重庆作为我国内陆承东启西的枢纽地区,将获得巨大的发展机遇。本文通过分析产业转移的规律以及动力机制,提出在城乡统筹的大背景下,通过政策引导投资实现资本、技术、劳动力等生产要素的跨地区流动,使得生产要素重新组合形成新的生产能力和产业规模,提升重庆市整体经济竞争力,实现城乡经济社会的统筹、协调发展。

关键词：产业转移产业承接重庆市

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敦煌盆地五墩凹陷周缘侏罗系露头沉积特征及油气勘探意义

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石油地质与工程 2018年第6期32卷 6-11,116页

作者：曹力伟中国石化胜利油田分公司勘探开发研究院山东东营257015

敦煌盆地五墩凹陷周缘下侏罗统露头发育特征对于凹陷物源体系分析及沉积相带划分有重要意义,野外露头实测结果表明,受构造条件、古气候和物源的影响,侏罗系露头为冲积扇、扇三角洲、湖底扇、浅-半深湖相沉积,纵向上沉积物粒度变化较快... 详细信息

敦煌盆地五墩凹陷周缘下侏罗统露头发育特征对于凹陷物源体系分析及沉积相带划分有重要意义,野外露头实测结果表明,受构造条件、古气候和物源的影响,侏罗系露头为冲积扇、扇三角洲、湖底扇、浅-半深湖相沉积,纵向上沉积物粒度变化较快。早侏罗世,大山口组沉积受三危山边界断裂控制,早期为冲积扇-扇三角洲沉积,沉积速率快;中晚期湖平面持续上升,沉积物粒度变细,发育扇三角洲-湖底扇相沉积。三危山在燕山晚期挤压抬升及喜山期走滑挤压,造成大山口组底部冲积扇及扇三角洲平原相地层出露地表。五墩凹陷洼陷带内扇三角洲前缘楔状砂或浊积砂体储层及半深湖相烃源岩垂向叠置,横向相变连接,是潜在的油气富集区,具备较大勘探潜力。

关键词：五墩凹陷侏罗系露头扇三角洲湖底扇沉积特征

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面向实施的重庆市老年人设施规划编制建议

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规划师 2015年第4期31卷 73-77页

作者：曹力维易峥孟庆重庆市规划设计研究院重庆市规划设计研究院总工办重庆市规划设计研究院城乡发展战略研究所

根据第六次全国人口普查数据,重庆市常住人口的老龄化率已居全国首位,其老龄化问题突出,现状老年人设施已难以满足居民的需求,引起了社会的关注和政府的高度重视。研究从重庆市老龄化社会现状入手,分析老年人设施在规划编制及管理建设... 详细信息

根据第六次全国人口普查数据,重庆市常住人口的老龄化率已居全国首位,其老龄化问题突出,现状老年人设施已难以满足居民的需求,引起了社会的关注和政府的高度重视。研究从重庆市老龄化社会现状入手,分析老年人设施在规划编制及管理建设方面存在的不适宜市场需求、实施困难等问题,提出适合重庆特点、便于实施的老年人设施规划编制建议。

关键词：老年人设施面向实施规划标准重庆市

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基于江苏海域定点观测资料的双峰谱谱型研究

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海洋学报 2024年第2期46卷 107-116页

作者：杨伊妮陶爱峰曹力玮范骏王岗河海大学海岸灾害及防护教育部重点试验室江苏南京210024 河海大学港口海岸与近海工程学院江苏南京210024 中国电建集团西北勘测设计研究院有限公司陕西西安710065

江苏海域作为全国海上风电重点建设海域,走向远海是未来发展的主趋势,外海开敞海域涌浪成分较多,海浪谱往往以双峰谱的形式出现,因此双峰谱海浪的谱型特征需要进一步深入研究,为海上施工提供参考依据。基于浮标测站2018年全年观测数据,... 详细信息

江苏海域作为全国海上风电重点建设海域,走向远海是未来发展的主趋势,外海开敞海域涌浪成分较多,海浪谱往往以双峰谱的形式出现,因此双峰谱海浪的谱型特征需要进一步深入研究,为海上施工提供参考依据。基于浮标测站2018年全年观测数据,经过异常值检验、双峰谱识别后得到1 223笔双峰谱数据,进而研究江苏海域波浪双峰谱谱型特征,对比不同典型双峰谱谱型并展开实测双峰谱的拟合,提出了修正谱宽参量,探究了修正系数、峰升高因子、谱宽参量间的依赖关系,得到了双峰谱拟合谱型表达式。结果表明:基于北大西洋海域提出Ochi-Hubble谱系及基于挪威海域提出的Torsethaugen谱并不适用于江苏海域双峰谱谱型,本文提出的双峰JONSWAP拟合谱具有自适应性,可以科学合理地描述江苏海域双峰谱谱型,并推广应用于不同风场、地形条件的海域中。

关键词：江苏海域双峰谱 Ochi-Hubble六参数谱 Torsethaugen双峰谱双峰JONSWAP拟合谱

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