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Bi-functional particles for integrated thermo-chemical processes:Catalysis and beyond

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Particuology 2021年第3期19卷 10-32页

作者： Hanke Li Chengxiong Dang Guangxing Yang Yonghai cao Hongjuan Wang Feng Peng Hao Yu State Key Laboratory of Pulp and Paper Engineering School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China

Particulate materials possessing dual functionalities have received tremendous investigations in many fields,owing to their superiority over mono-functional counterparts and their potential for process integration and *** review focuses on bi-functional catalytic particles which also serve as sorbents/adsorbents or heat suppliers in the scheme of various thermo-chemical processes,enabling inherent separation or energy conservation within single-step ***-functional particles applied for integration of reaction and separation including sorption-enhanced hydrogen production and integrated capture and catalytic conversion processes are reviewed in detail,providing insights into material design and key performance *** the other hand,bi-functional particles applied for integration of reaction and non-thermal radiation heating,including electrothermal and photothermal assisted heterogeneously catalyzed reactions,are also reviewed,with emphasis on the material property and energy efficiency *** bi-functional particles show broad adaptability and feasibility in various reactions operated in integrated and intensified schemes,affording huge potentials for further improving productivity and efficiency in thermo-chemical processes.

关键词： Bi-functional particles Thermo-chemical processes Catalysis Separation Energy conservation Process integration and intensification

Rill erosion and controlling factors on highway side-slopes in the permafrost region

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Journal of Mountain Science 2024年第11期21卷 3669-3682页

作者： LI Rui WU Lilei cao Longxi KONG Yaping CHEN Guo WU Ting State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China College of Ecology and Environment Chengdu University of TechnologyChengdu 610059China China Academy of Transportation Sciences Beijing 100029China

Soil erosion on highway side-slope has been recognized as a cause of environmental damage and a potential threat to road embankments in the high-altitude permafrost *** assess the risk to roads and to protect them effectively,it is crucial to clarify the mechanisms governing roadside ***,the cold climate and extremely vulnerable environment under permafrost conditions may result in a unique process of roadside erosion,which differs from the results of current studies conducted at lower *** this study,a field survey was conducted to investigate side-slope rill erosion along the permafrost section of a highway on the Qinghai‒Tibet Plateau of *** in erosion rates have been revealed,and intense erosion risks(with an average erosion rate of 13.05 kg/m^(2)/a)have been identified on the northern side of the Tanggula *** the case of individual rills,the detailed rill morphology data indicate that the rill heads are generally close to the slope top and that erosion predominantly occurs in the upper parts of highway slopes,as they are affected by road surface *** the road segment scale,the Pearson correlation and principal component analysis results revealed that the protective effect of vegetation,which was influenced by precipitation,was greater than the erosive effect of precipitation on roadside erosion.A random forest model was then adopted to quantify the importance of influencing factors,and the slope gradient was identified as the most significant factor,with a value of ***,the integrated slope and slope length index(L0.5S2)proved to be a reliable predictor,and a comprehensive model was built for highway side-slope rill erosion prediction(model efficiency=0.802).These results could be helpful for highway side-slope conservation and ecological risk prediction in alpine permafrost areas.

关键词： Rill erosion Rill morphology Highway side-slope Permafrost region Qinghai‒Tibet Highway

Performance prediction of expressway pavement in high maintenance level areas based on cosine deterioration equation: A case study of Zhejiang Province in China

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Journal of Road Engineering 2022年第3期2卷 267-278页

作者： Liping cao Lingwen Li Chen Yang Bingtao Zhang Zejiao Dong School of Transportation Science and Engineering Harbin Institute of TechnologyHarbin 150090China Highway Administration of Jilin Province Changchun 130021China

Accurate prediction of performance decay law is an important basis for long-term planning of maintenance *** statistical regression prediction model is the most widely employed method to calculate pavement performance due to its advantages such as the small amount of calculation and good accuracy,but the traditional prediction model seems not applicable to the high maintenance level areas with excellent pavement *** this paper,the service life and the cumulative number of the axle load were determined as the independent variables of prediction models of pavement *** pavement condition index(PCI)and rutting depth index(RDI)were selected as maintenance decision control indexes to establish the unified prediction model of PCI and RDI respectively by applying the cosine deterioration *** reveal that the deterioration law of PCI presents an anti-S type or concave type and the deterioration law of RDI shows an obvious concave *** prediction model proposed in this study added the pavement maintenance standard factor d,which brings the model parameterα(reflecting the road life)and the deterioration equations are more applicable than the traditional standard *** is found that the fitting effects of PCI and RDI prediction models with different traffic grades are relatively similar to the actual service state of the pavements.

关键词： High maintenance level area Pavement performance prediction Statistical regression model Cosine deterioration equation

2D-layered Sn/Ge anodes for lithium-ion batteries with high capacity and ultra-fast Li ion diffusivity

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Journal of Energy Chemistry 2020年第8期29卷 160-165,I0006页

作者： Xiyu cao Yanchen Fan Jiale Qu Tianshuai Wang Dominik Legut Qianfan Zhang School of Materials Science and Engineering Beihang UniversityBeijing 100191China IT4Innovations.VSB-Technical University of Ostrava CZ-70800 Ostrava-PorubaCzechia Nanotechnology Centre VSB-Technical University of OstravaCZ-70800 Ostrava-PorubaCzechia

As a new type of green energy, lithium-ion battery(LIB) has been widely used in various electric portable devices because of its high-voltage, large specific capacity, long cycle life and environmental friendliness [1,2]. However, today’s anode materials of commercial LIBs cannot meet the further development requirements of smart devices and electric car due to the limitations of the electrode capacity(e.g. 372 mAh g-1 for graphite).

关键词： 2D-layered material Stanene Germanene Lithium-ion battery Lithium diffusion

Delivery of Micro RNAs by plant virus-based nanoparticles to functionally alter the osteogenic differentiation of human mesenchymal stem cells

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Chinese Chemical Letters 2023年第1期34卷 215-220页

作者： Fei Xue Jeroen J.L.M.Cornelissen Quan Yuan Shuqin cao State Key Laboratory of Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Department of Molecules&Materials MESA+Institute for NanotechnologyUniversity of TwenteEnschede AE 7500the Netherlands

Micro RNA-26a(miR-26a)has been verified to promote osteogenic differentiation of mesenchymal stem cells in recent *** main obstacles to its application in bone regeneration are instability in the physiological environment and low efficiency of cellular membrane *** overcome these problems,we constructed a novel plant virus gene delivery system based on Cowpea chlorotic mottle virus(CCMV).By encapsulating miR-26a with purified capsid protein(CP)dimers derived from CCMV,CPmiR-26a(CP26a)virus-like particles(VLPs)were ***26a retained a structure similar to the native CCMV and protected miR-26a from digestion with its exterior ***,CP26a featured similar cellular uptake efficiency,osteogenesis promotion ability,and better biocompatibility compared with Lipofectamine2000-miR-26a(lipo26a),which indicated a promising prospect for CCMV as a novel gene delivery system.

关键词： VLPs Cowpea chlorotic mottle virus Gene delivery MicroRNAs Osteogenesis

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基于.NET框架的Web电子邮件跟踪技术

微计算机信息 2005年第10X期21卷 53-55页

作者：殷卫红殷脂曹渠江上海电力学院上海理工大学

设计并实现了一种基于Http处理管道模型的电子邮件跟踪方案,通过自定义的HttpModule类能够有效拦截HttpRequest以实现个性化的电子邮件跟踪需求,且有更强的通用性。

关键词：电子邮件跟踪 Http处理管道 HttpModule Http Request

Multi-UAV Network Assisted Intelligent Edge Computing:Challenges and Opportunities

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China Communications 2022年第3期19卷 258-278页

作者： Zhiwei Liu Yang cao Peng Gao Xinhai Hua Dongcheng Zhang Tao Jiang School of Electronic Information and Communications Huazhong University of Science and TechnologyWuhan 430074China China Mobile Group Design Institute Co. Ltd.Xingjiang BranchXingjiang 830011 China Department of Cloud Video Product ZTE CorporationNanjing 210012China China Mobile Group Design Institute Co. Ltd.Beijing 100080China School of Cyber Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Introducing multi-UAV network with flexible deployment into mobile edge computing(MEC)can effectively improve the quality of service of Internet-of-Things services,reduce the coverage cost and resource waste rate of edge nodes,and also bring some *** paper first introduces the current situation and pain points of mobile edge computing,then analyzes the significance and value of using multi-UAV network to assist mobile edge computing,and summarizes its key technologies and typical *** the end,some open research problems and technology prospects of multi-UAV network assisted intelligent edge computing are put forward,which provide new ideas for the future development of this field.

关键词： multi-UAV cooperation mobile edge computing Internet-of-Things UAV assistance

The Rapid Assessment and Early Warning Models for COVID-19

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Virologica Sinica 2020年第3期35卷 272-279页

作者： Zhihua Bai Yue Gong Xiaodong Tian ying cao Wenjun Liu Jing Li CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China National Science Library Chinese Academy of SciencesBeijing 100190China Institute of Microbiology Center for Biosafety MegaScienceChinese Academy of SciencesBeijing 100101China

Human beings have experienced a serious public health event as the new pneumonia(COVID-19), caused by the severe acute respiratory syndrome coronavirus has killed more than 3000 people in China, most of them elderly or people with underlying chronic diseases or immunosuppressed states. Rapid assessment and early warning are essential for outbreak analysis in response to serious public health events. This paper reviews the current model analysis methods and conclusions from both micro and macro perspectives. The establishment of a comprehensive assessment model, and the use of model analysis prediction, is very efficient for the early warning of infectious diseases. This would significantly improve global surveillance capacity, particularly in developing regions, and improve basic training in infectious diseases and molecular epidemiology.

关键词： COVID-19 SARS-CoV-2 Models Rapid assessment Early warning

The Pd-catalyzed synthesis of difluoroethyl and difluorovinyl compounds with a chlorodifluoroethyl iodonium salt(CDFI)

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Chinese Chemical Letters 2022年第3期33卷 1541-1544页

作者： Yaru Niu Chengyao Kimmy cao Chenxin Ge Hongmei Qu Chao Chen Key Laboratory of Systems Bioengineering Ministry of EducationDepartment of Pharmaceutical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education MOE)Department of ChemistryTsinghua UniversityBeijing 100084China State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianjin 300071China

Herein, we report a simple and efficient method for the direct installation of chlorodifluoroethyl group onto aromatic molecules of various aromatic amides with a new 2-chloro,2,2-difluoroethyl(mesityl)iodonium salt(CDFI). Moreover, the chlorodifluoroethyl compounds could be smoothly converted into difluorovinyl compounds in a one-pot or discrete procedure and regarded as a steady source of difluorovinyl compounds with “HCl-mask”.

关键词： Iodonium salts C-H activation Pd-catalyzed Difluoroethylation Difluorovinylation