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In situ meso-tetra(4-carboxyphenyl)porphyrin ligand substitution in Hf-MOF for enhanced catalytic activity and stability in photoredox reactions

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Rare Metals 2024年第6期43卷 2682-2694页

作者： Jie Hu Hong-Xin lao Xiu-Wu Xu Wei-Kang Wang Le-Le Wang Qin-Qin Liu School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China College of Chemistry and Materials Engineering Research Center of Carbon NeutralityAnhui Normal UniversityWuhu 241002China Fujian Provincial Key Laboratory of Ecology-Toxicological Effects and Control for Emerging Contaminants Putian UniversityPutian 351100China

Though there are numerous intrinsic merits of metal-organic frameworks(MOFs),low charge separation efficiency has imposed heavy restrictions on their photocatalytic ***,in situ porphyrin ligand substitution,as a strategy for improving the charge separation efficiency and increasing the amounts of active sites,has been designed and realized in a Hf-biphenyl dicarboxylic acid(BPDC)***,a size and geometry matched meso-tetra(4-carboxyphenyl)porphyrin(TCPP)ligand was selected and doped into Hf-BPDC MOF by forming coordinating bonds with Hf centers,forming dualligand Hf-BPDC-TCPP *** resultant Hf-BPDC-TCPP MOF showed significantly improved activity and chemical stability in the photocatalytic H_(2)generation(261μmol·g^(-1)·h^(-1))and tetracycline(TC)degradation reactions(95.8%),which was 48 and 1.47 folds higher than that of the Hf-BPDC *** and electrochemical studies revealed that the introduction of porphyrin ligand could generate a stronger internal electric field for boosting the charge separation and transfer,increase the specific surface area for providing more active sites,and narrow the band gap to enhance the visible light *** in situ ligand substitution method provides a promising approach to build a tunable platform for constructing high-performance MOF photocatalysts.

关键词： Ligand substitution Metal organic frameworks Meso-tetra(4-carboxyphenyl)porphyrin Hydrogen evolution reaction Tetracycline degradation

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Advances in Deep-Learning-based Precipitation Nowcasting Techniques

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Journal of Tropical Meteorology 2024年第3期30卷 337-350页

作者： ZHENG Qun LIU Qi lao Ping LU Zhen-ci School of Earth and Space Sciences/CMA-USTC Laboratory of Fengyun Remote Sensing University of Science and Technology of ChinaHefei 230026 China

Precipitation nowcasting,as a crucial component of weather forecasting,focuses on predicting very short-range precipitation,typically within six *** approach relies heavily on real-time observations rather than numerical weather *** core concept involves the spatio-temporal extrapolation of current precipitation fields derived from ground radar echoes and/or satellite images,which was generally actualized by employing computer image or vision ***,with stirring breakthroughs in artificial intelligence(AI)techniques,deep learning(DL)methods have been used as the basis for developing novel approaches to precipitation *** progress has been obtained in recent years,manifesting the strong potential of DL-based nowcasting models for their advantages in both prediction accuracy and computational *** paper provides an overview of these precipitation nowcasting approaches,from which two stages along the advancing in this field *** models that were established on an elementary neural network dominated in the first stage,while large meteorological models that were based on complex network architectures prevailed in the *** particular,the nowcasting accuracy of such data-driven models has been greatly increased by imposing suitable physical *** integration of AI models and physical models seems to be a promising way to improve precipitation nowcasting techniques further.

关键词： precipitation nowcasting deep learning neural network classic model large model

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Photocatalytic Site-Selective Cascade Radical Addition of Biaryl Ynones for the Construction of Spiro-and Fused Carbon Rings

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Chinese Journal of Chemistry 2024年第14期42卷 1599-1605页

作者： Kairui Liu Chunhang Zhao Liji Gu Xiang Li Jiali Yan Siqi lao Weiwei Huan Yan Zhang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials and Drug Discovery&Innovation CenterCollege of Chemistry and Materials ScienceZhejiang Normal UniversityJinhuaZhejiang321004 China Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass College of Chemistry and Materials EngineeringZhejiang A&F UniversityHangzhouZhejiang311300 China

Functionalized free radical addition/cyclization reactions represent an efficient way for introducing new functionality or coupling fragments to *** are good regional selectivity radical acceptors in organic synthesis,and many of bio-relevant cyclic compounds could be easily obtained by direct radical cyclization ***,we report a photocatalytic cascade radical addition of biaryl ynones,for the divergent synthesis of privileged carbon ***,further transformation of the multi-functional group product into a variety of other derivatives demonstrates the synthetic value of this developed method.

关键词： Ynones Photocatalysis Cascade cyclization Alkoxycarbonyl radical Dearomatization Biaryls Regioselectivity Radical reactions

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Correction to“Research progress of ferroptosis regulating lipid peroxidation and metabolism in occurrence of primary liver cancer”

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World Journal of Gastrointestinal Oncology 2024年第10期16卷 4298-4299页

作者： Yu-Jie Shu Bo lao Ying-Yang Qiu Department of Gastroenterology Yinzhou District Second HospitalNingbo 315199Zhejiang ProvinceChina Yong Loo Lin School of Medicine National University of SingaporeSingapore 119077Singapore

Correction to“Research progress of ferroptosis regulating lipid peroxidation and metabolism in occurrence and development of primary liver cancer”in World J Gastrointest Oncol 2024;16:2335-2349,published by Shu YJ,L... 详细信息

关键词： Correction Ferroptosis Lipid peroxidation Primary liver cancer Lipid metabolism

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Coupling ideality of standing-wave supermode microresonators

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Photonics Research 2024年第8期12卷 1610-1618页

作者： MIN WANG YUECHEN LEI ZHI-GANG HU CHENGHAO lao YUANLEI WANG XIN ZHOU JINCHENG LI QI-FAN YANG BEI-BEI LI Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China School of Physics Beihang UniversityBeijing 100191China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Songshan Lake Materials Laboratory Dongguan 523808China

Standing-wave supermode microresonators that are created through the strong coupling between counter-propagating modes have emerged as versatile platforms for sensing and nonlinear *** example,these microresonators have shown potential in nanoparticle sizing and counting,as well as enhancing the single-photon optomechanical coupling rate of stimulated Brillouin ***,it has been observed that the relation between the mode linewidth and on-resonance transmission of the split supermodes differs obviously from that of the non-split *** behavior is typically quantified by the coupling ideality(I),which remains inadequately explored for the standing-wave *** this study,we theoretically and experimentally investigate the coupling ideality of standing-wave supermodes in a commonly employed configuration involving a Si O2microresonator side-coupled to a tapered *** findings demonstrate that,even with a single-mode tapered fiber,the coupling ideality of the standing-wave supermodes is limited to 0.5,due to the strong backscattering-induced energy loss into the counter-propagating direction,resulting in an additional equivalent parasitic *** achieving a coupling ideality of 0.5 presents challenges for reaching over-coupled regimes,it offers a convenient approach for adjusting the total linewidth of the modes while maintaining critically-coupled conditions.

关键词： ideality mode wave

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多年生黑麦草对甲鱼养殖废水净化功能的工程应用研究

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上海交通大学学报（农业科学版） 2005年第1期23卷 41-45页

作者：劳善根丁伟林崔绍荣谢可军浙江大学环境工程系杭州310029 浙江大学农业生物环境工程研究所杭州310029

采用基质盘培方式,于人工建造处理槽中,种植多年生黑麦草来处理养鳖废水,探讨黑麦草循环水基质培系统对养鳖废水的净化效果和工程设计水力学参数。结果表明,黑麦草循环水基质培系统对高浓度NH4+-N的养鳖废水的CODCr、TN、NH4+-N、SS的... 详细信息

采用基质盘培方式,于人工建造处理槽中,种植多年生黑麦草来处理养鳖废水,探讨黑麦草循环水基质培系统对养鳖废水的净化效果和工程设计水力学参数。结果表明,黑麦草循环水基质培系统对高浓度NH4+-N的养鳖废水的CODCr、TN、NH4+-N、SS的去除率分别在87%、49%、90%、90%以上,去除CODCr、TN、NH4+-N、SS的工程设计参数分别为0.66、0.23、0.29、0.69mg·L-1·m-2·d-1,为工程的实际应用提供了参考。

关键词：多年生黑麦草基质养鳖鱼养殖甲鱼 NH4^+-N 种植废水净化 CODC TN

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Saturation Estimation with Complex Electrical Conductivity for Hydrate-Bearing Clayey Sediments:An Experimental Study

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Journal of Ocean University of China 2024年第1期23卷 173-189页

作者： XING Lanchang ZHANG Shuli ZHANG Huanhuan WU Chenyutong WANG Bin lao Liyun WEI Wei HAN Weifeng WEI Zhoutuo GE Xinmin DENG Shaogui College of Control Science and Engineering China University of Petroleum(East China)Qingdao 266580China School of Water Energy and EnvironmentCranfield UniversityCranfield MK430ALUnited Kingdom Department of Alternative Energy PetroChina Research Institute of Petroleum Exploration&DevelopmentLangfang 065007China School of Geosciences China University of Petroleum(East China)Qingdao 266580China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China

Clays have considerable influence on the electrical properties of hydrate-bearing *** is desirable to understand the electrical properties of hydrate-bearing clayey sediments and to build hydrate saturation(S_(h))models for reservoir evaluation and *** electrical properties of tetrahydrofuran-hydrate-bearing sediments with montmorillonite are characterized by complex conductivity at frequencies from 0.01 Hz to 1 *** effects of clay and Sh on the complex conductivity were analyzed.A decrease and increase in electrical conductance result from the clay-swelling-induced blockage and ion migration in the electrical double layer(EDL),*** quadrature conductivity increases with the clay content up to 10%because of the increased surface site density of counterions in *** the in-phase conductivity and quadrature conductivity decrease consistently with increasing Sh from 0.50 to *** sets of models for Sh evaluation were *** model based on the Simandoux equation outperforms Archie’s formula,with a root-mean-square error(E_(RMS))of 1.8%and 3.9%,respectively,highlighting the clay effects on the in-phase *** fre-quency effect correlations based on in-phase and quadrature conductivities exhibit inferior performance(E_(RMS)=11.6%and 13.2%,re-spectively)due to the challenge of choosing an appropriate pair of frequencies and intrinsic uncertainties from two *** second-order Cole-Cole formula can be used to fit the complex-conductivity *** pair of inverted Cole-Cole parameters,i.e.,characteristic time and chargeability,is employed to predict S_(h) with an E_(RMS) of 5.05%and 9.05%,respectively.

关键词： gas hydrate complex electrical conductivity hydrate-bearing clayey sediment hydrate saturation Simandoux equation frequency dispersion Cole-Cole formula

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非法经营罪中支付结算业务的界定

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法学 2024年第9期 76-92页

作者：劳东燕清华大学法学院

司法实务中对支付结算型非法经营罪存在泛化适用的倾向,根本原因是由于对“非法从事资金结算业务”做宽泛解读所致。只有作为提供支付结算服务的中介机构,其从事的业务才可能成立非法经营罪中的支付结算业务,这符合支付结算业务作为特... 详细信息

司法实务中对支付结算型非法经营罪存在泛化适用的倾向,根本原因是由于对“非法从事资金结算业务”做宽泛解读所致。只有作为提供支付结算服务的中介机构,其从事的业务才可能成立非法经营罪中的支付结算业务,这符合支付结算业务作为特许业务的要求,并有《商业银行法》等前置性规定作为规范依据。据此,现行司法解释中有关支付结算型非法经营罪的规定存在正当性方面的疑问,以是否借助虚假交易等形式套现来理解支付结算型的非法经营罪,是对该罪构成要件与不法本质的曲解。无论是通过信用卡套现与“养卡”的行为,还是为票据套现提供中介服务的行为,抑或利用单位账户套现或转入私人账户的行为,都难以构成支付结算型非法经营罪;但相关行为可能成立骗取贷款罪或洗钱罪等罪名,在无法成立其他犯罪的情况下,对相应行为应做无罪处理。

关键词：非法经营罪支付结算业务信用卡套现票据套现单位账户套现

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非法经营罪中的经营行为研究

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现代法学 2024年第5期46卷 49-68页

作者：劳东燕清华大学法学院北京100084

针对非法经营罪的泛化适用,有必要严格界定其构成要件,并注重出罪机制的构建。经营行为系非法经营罪实行行为的组成部分,如何对其进行合理界定,是关于该罪法教义学建构必须关注的问题。非法经营罪中经营行为有这些共性特点:涉及经济领... 详细信息

针对非法经营罪的泛化适用,有必要严格界定其构成要件,并注重出罪机制的构建。经营行为系非法经营罪实行行为的组成部分,如何对其进行合理界定,是关于该罪法教义学建构必须关注的问题。非法经营罪中经营行为有这些共性特点:涉及经济领域内的业务活动,指向的是业务内容而非业务方式;有直接或间接相对应的合法业务;行为蕴含的类型性风险具有“扰乱市场秩序”的性质;经营行为本身构成“违反国家规定”。非法经营罪中的经营行为应当体现经营性的面向。所谓的经营性,意指行为蕴含经济性利益,以出售商品或服务的环节为核心内涵,出于营利目的,并具有反复进行的意思。在非法经营罪有无未遂形态的问题上,司法实务界坚持的是否定论立场。否定论的立场缺乏合理性,是对经营行为过于宽泛的解读,是将该罪当作行为犯的结果。经营行为以销售环节为核心的特性,决定了非法经营罪存在未遂形态。

关键词：非法经营罪经营行为出罪机制犯罪未遂扰乱市场秩序

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民办学校公共服务职能论析

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教育研究 2024年第2期45卷 134-146页

作者：劳凯声首都师范大学教育学院北京100048

公共服务是社会治理的重要模式,也是解决社会民生问题的实际行动。民办学校的分类管理改革推动了不同类型民办学校法律身份和主体资格向精细化的方向发展,导致其所供给的教育服务出现分化。由于不同民办学校均须遵循公益性的要求,因此,... 详细信息

公共服务是社会治理的重要模式,也是解决社会民生问题的实际行动。民办学校的分类管理改革推动了不同类型民办学校法律身份和主体资格向精细化的方向发展,导致其所供给的教育服务出现分化。由于不同民办学校均须遵循公益性的要求,因此,营利性民办学校供给的私人服务在一定条件下可以表现为具有公共服务性质的市场化公益行为。公益性对不同民办学校的公共服务供给有不同的要求,对非营利性民办学校而言,应禁止学校内部的利益分配;而对营利性民办学校而言,在允许分配利润的同时,应遏制过度逐利行为。“社会企业”反映了营利部门和非营利部门跨界的时代潮流,对理解民办学校公共服务具有重要的现实意义。民办学校应根据自身情况参与公共服务供给,满足社会一般需要的同时,满足特殊需要群体对教育的自主选择要求。

关键词：公共服务民办学校分类管理市场化公益行为

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