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Triazine-COF@Silicon nanowire mimicking plant leaf to enhance photoelectrocatalytic CO_(2)reduction to C2þchemicals

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Green Energy & Environment 2025年第2期10卷 422-432页

作者： Wenrui Wan Fanhua Meng Si Chen Jianhua Wang chunyan liu Yan Wei Chenpu He Li Fan Qiaolan Zhang Weichun Ye Huanwang Jing State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000GansuChina Key Laboratory of Green Chemical Media and Reactions(Ministry of Education) School of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang453007HenanChina School of Chemical Engineering Lanzhou University of Arts and SciencesLanzhou730010China

Converting CO_(2)and water into valuable chemicals like plant do is considered a promising approach to address both environmental and energy *** inspiration from the structures of natural leaves,we designed and synthesized a novel copper-coordinated covalent triazine framework(CuCTF)supported by silicon nanowire arrays on wafer *** marks the first-ever application of such a hybrid material in the photoelectrocatalytic reduction of CO_(2)under mild *** Si@CuCTF6 heterojunction has exhibited exceptional selectivity of 95.6%towards multicarbon products(C^(2+))and apparent quantum efficiency(AQE)of 0.89%for carbon-based *** active sites of the catalysts are derived from the nitrogen atoms of unique triazine ring structure in the ordered porous framework and the abundant Cu-N coordination sites with bipyridine ***,through DFT calculations and operando FTIR spectra analysis,we proposed a comprehensive mechanism for the photoelectrocatalytic CO_(2)reduction,confirming the existence of key intermediate species such as*CO_(2)-,*=C=O,*CHO and*CO-CHO *** work not only provides a new way to mimic photosynthesis of plant leaves but also gives a new opportunity to enter this research field in the future.

关键词： Silicon Photoelectrocatalysis CO_(2)reduction Covalent triazine framework Sustainable chemistry

ARCHIMEDES'PRINCIPLE OF FLOTATION AND FLOATING BODIES:CONSTRUCTION,EXTENSIONS AND RELATED PROBLEMS

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Acta Mathematica Scientia 2025年第1期45卷 237-256页

作者： chunyan liu Elisabeth M.WERNER Deping YE 张宁 School of Mathematics and Computer Science Wuhan Polytechnic UniversityWuhan430048China Department of Mathematics Case Western Reserve UniversityClevelandOH44106USA Department of Mathematics and Statistics Memorial University of NewfoundlandSt.John’sNewfoundlandCanadaA1C 5S7 Department of Mathematics and Statistics Memorial University of NewfoundlandSt.John’sSchool of Mathematics and StatisticsHuazhong University of Science and Technology1037 Luoyu RoadWuhan430074China

In this article,we explain how the famous Archimedes’principle of flotation can be used to construct various floating *** survey some of the most important results regarding the floating bodies,including their relations with affine surface area and projection body,their extensions in different settings such as space forms and log-concave functions,and mention some associated open problems.

关键词： flfoating body affine surface area log-concave functions

分级燃烧技术在LNG接收站浸没燃烧式气化器中的应用与优化

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石化技术 2025年第1期32卷 48-49,27页

作者：杨潇刘春言北京市燃气集团有限责任公司北京100035

针对液化天然气(LNG)接收站在气化过程中面临的氮氧化物(NO_x)排放问题,深入研究了浸没燃烧式气化器(SCV)采用分级燃烧技术实现低氮排放的可能性与实践效果。通过分析国内外相关研究成果,探讨了分级燃烧技术的基本原理、关键技术要点,... 详细信息

针对液化天然气(LNG)接收站在气化过程中面临的氮氧化物(NO_x)排放问题,深入研究了浸没燃烧式气化器(SCV)采用分级燃烧技术实现低氮排放的可能性与实践效果。通过分析国内外相关研究成果,探讨了分级燃烧技术的基本原理、关键技术要点,以及在北京燃气集团天津南港LNG应急储备项目中的具体应用案例。研究表明,分级燃烧技术能够显著降低NO_x排放,同时保持较高的燃烧效率和运行稳定性,为LNG接收站的环保升级提供了有力的支持。

关键词： LNG接收站浸没燃烧式气化器分级燃烧低氮技术 NO_x排放

Plant transfer RNA-derived fragments:Biogenesis and functions

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Journal of Integrative Plant Biology 2021年第8期63卷 1399-1409页

作者： Xuan Ma chunyan liu Xiaofeng Cao Tianjin Key Laboratory of Animal and Plant Resistance College of Life SciencesTianjin Normal UniversityTianjin300387 China State Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental Biologythe Chinese Academy of SciencesBeijing100101 China CAS Center for Excellence in Molecular Plant Sciences the Chinese Academy of SciencesBeijing100101 China University of Chinese Academy of Sciences Beijing100049 China

Processing of mature transfer RNAs(tRNAs)produces complex populations of tRNA-derived fragments(tRFs).Emerging evidence shows that tRFs have important functions in bacteria,animals,and ***,we review recent advances in understanding plant tRFs,focusing on their biological and cellular functions,such as regulating stress responses,mediating plant-pathogen interactions,and modulating post-transcriptional gene silencing and *** also review sequencing strategies and bioinformatics resources for studying tRFs in ***,we discuss future directions for plant tRF research,which will expand our knowledge of plant non-coding RNAs.

关键词： tRFs tRNA halves RNase T2 stress gene silencing plant

超声波处理结合微孔气调包装对鲜切菠萝蜜冷藏品质的影响

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食品工业科技 2025年第4期46卷 350-357页

作者：樊爱萍邓秋红曾丽萍杨光明李毓冰刘春艳红河学院化学与资源工程学院云南蒙自661199 云南省绿色食品中越双边国际联合实验室云南蒙自661199 红河哈尼族彝族自治州检验检测院云南蒙自661199

为了明确超声波(US)处理结合微孔气调包装(MMAP)对鲜切菠萝蜜微生物总数和冷藏品质的影响,并确定最佳保鲜手段,采用对照(蒸馏水,10 min)、US(300 W,10 min)、MMAP(蒸馏水,10 min,5%O2、6%CO_(2),15个打孔数)以及US+MMAP四种方式处理鲜... 详细信息

为了明确超声波(US)处理结合微孔气调包装(MMAP)对鲜切菠萝蜜微生物总数和冷藏品质的影响,并确定最佳保鲜手段,采用对照(蒸馏水,10 min)、US(300 W,10 min)、MMAP(蒸馏水,10 min,5%O2、6%CO_(2),15个打孔数)以及US+MMAP四种方式处理鲜切菠萝蜜,样品在10±1℃下储存8 d,每2 d一次测定微生物及理化指标。结果表明,与对照相比,三种处理均可显著抑制鲜切菠萝蜜冷藏期间菌落总数、霉菌和酵母菌数生长繁殖(P<0.05),有效地延缓了由微生物引起的腐败变质,维持了鲜切菠萝蜜较高的组织硬度、可溶性固形物、可滴定酸,VC和总酚含量等,同时降低了丙二醛含量、多酚氧化酶和过氧化物酶活性,抑制了果实褐变,且US+MMAP联合处理显著优于单一处理。因此,超声波处理结合微孔膜气调包装(US+MMAP)能有效延长鲜切菠萝蜜的保鲜期。

关键词：鲜切菠萝蜜超声波气调包装贮藏品质

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A new nonfullerene acceptor with an extended π conjugation core enables ternary organic solar cells approaching 19%efficiency

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Nano Research 2024年第5期17卷 4062-4068页

作者： chunyan liu Nailiang Qiu Zhengjin Li Yan Lu School of Materials Science and Engineering Tianjin Key Laboratory for Photoelectric Materials and DevicesKey Laboratory of Display Materials and Photoelectric DevicesMinistry of EducationTianjin University of TechnologyTianjin 300384China School of Chemistry Chemical Engineering and MaterialsJining UniversityQufu 273155China

In organic solar cells(OSCs),it is an effective way to improve the power conversion efficiency(PCE)by adding a guest component with appropriate absorption and energy levels in the host ***,a new nonfullerene acceptor(NFA)named TBF-2Cl was developed by the strategy of expanding theπconjugated core of 2,2’-(((4,4,9,9-tetrahexyl-4,9-dihydro-s-indaceno[1,2-b:5,6-b’]dithiophene-2,7-diyl)bis(methaneylylidene))bis(5,6-dichloro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(IDT-4Cl)with two benzene *** increase of benzene units,TBF-2Cl exhibits higher lowest unoccupied molecular orbital(LUMO)level of-3.75 eV than that of one benzene unit based NFA IDT-4Cl and fluorene core based NFA F-2Cl,which facilitates enhancing the open-circuit voltage(V_(oc))of ternary ***,TBF-2Cl film shows a medium optical bandgap with the absorption range from 500-800 nm,being well complementary with the wide bandgap polymer donor D18 and narrow bandgap NFA ***,a remarkable PCE of 18.92%with a high short-circuit current density(J_(sc))of 27.40 mA·cm^(-2),a fill factor(FF)of 0.749,especially an outstanding V_(oc) of 0.922 V was achieved for the optimal ternary device based on D18:TBF-2Cl:CH-6F,surpassing the binary counterpart(17.08%).The findings provide insight into the development of new guest acceptors for obtaining more efficient OSCs.

关键词： medium optical bandgap high lowest unoccupied molecular orbital(LUMO)level the third component ternary organic solar cell high open-circuit voltage

Biogenesis,action and biological functions of an Arabidopsis 5' t RF,5' ts R-Ala

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Science China(Life Sciences) 2022年第5期65卷 1050-1052页

作者： chunyan liu Bo Cao Xiaofeng Cao State Key Laboratory of Plant Genomics and National Center for Plant Gene Research(Beijing) Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Microbial Metabolism School of Life Sciences&BiotechnologyShanghai Jiao Tong UniversityShanghai 200030China Center for Excellence in Molecular Plant Sciences Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Transfer RNAs(tRNAs) are one class of most conserved and abundant RNA species with 76–90 nucleotides(nt) in *** constitute approximately 4%–15% of total cellular RNAs and are well known for translating the codons on... 详细信息

关键词： action translating Toll

对外直接投资、绿色技术创新与工业绿色转型——来自34个工业行业的证据

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技术经济与管理研究 2025年第2期 77-83页

作者：刘春艳新疆财经大学经济学院新疆乌鲁木齐830012

选取2004—2021年中国34个工业行业的面板数据,实证检验对外直接投资对工业绿色转型的影响特征与作用渠道。研究发现:对外直接投资有效促进了工业绿色转型,但具有行业异质性,仅促进了非技术密集型工业行业绿色转型,异质性的来源可能是... 详细信息

选取2004—2021年中国34个工业行业的面板数据,实证检验对外直接投资对工业绿色转型的影响特征与作用渠道。研究发现:对外直接投资有效促进了工业绿色转型,但具有行业异质性,仅促进了非技术密集型工业行业绿色转型,异质性的来源可能是投资方向而非投资方式。机制分析表明,顺向投资通过促进改进型绿色技术创新赋能工业绿色转型,逆向投资则通过促进发明型与改进型绿色技术创新助推工业绿色转型。进一步讨论发现,对外直接投资对工业绿色转型的促进作用来源于对外直接投资深度的纵深发展,而非简单的拓展投资广度。

关键词：对外直接投资工业行业绿色转型绿色技术创新

A Blockchain and CP-ABE Based Access Control Scheme with Fine-Grained Revocation of Attributes in Cloud Health

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Computers, Materials & Continua 2024年第2期78卷 2787-2811页

作者： Ye Lu Tao Feng chunyan liu Wenbo Zhang School of Computer&Communication Lanzhou University of TechnologyLanzhou730000China School of Economics&Management Lanzhou University of TechnologyLanzhou730000China School of Computer Science Baoji University of Arts and ScienceBaoji721000China

The Access control scheme is an effective method to protect user data *** access control scheme based on blockchain and ciphertext policy attribute encryption(CP–ABE)can solve the problems of single—point of failure and lack of trust in the centralized ***,it also brings new problems to the health information in the cloud storage environment,such as attribute leakage,low consensus efficiency,complex permission updates,and so *** paper proposes an access control scheme with fine-grained attribute revocation,keyword search,and traceability of the attribute private key distribution *** technology tracks the authorization of attribute private *** credit scoring method improves the Raft protocol in consensus ***,the interplanetary file system(IPFS)addresses the capacity deficit of *** the premise of hiding policy,the research proposes a fine-grained access control method based on users,user attributes,and file *** optimizes the data-sharing *** the same time,Proxy Re-Encryption(PRE)technology is used to update the access *** proposed scheme proved to be *** analysis and experimental results show that the proposed scheme has higher efficiency and more *** can meet the needs of medical institutions.

关键词： Blockchain access-control CP-ABE cloud health