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Electron-deficient ZnO induced by heterointerface engineering as the dominant active component to boost CO_(2)-to-formate conversion

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Carbon Energy 2024年第5期6卷 127-136页

作者： Qing Qin zijian Li Yingzheng Zhang Haeseong Jang Li Zhai Liqiang Hou Xiaoqian Wei Zhe Wang Min Gyu Kim Shangguo Liu Xien Liu College of Chemical Engineering Qingdao University of Science and TechnologyQingdaoChina Department of Chemistry City University of Hong KongHong Kong SARChina Department of Advanced Materials Engineering Chung-Ang UniversityAnseong-siGyeonggi-doRepublic of Korea Beamline Research Division Pohang Accelerator Laboratory(PAL)PohangRepublic of Korea

Electrocatalytic CO_(2)-to-formate conversion is considered an economically viable *** general,Zn-based nanomaterials are well-known to be highly efficient electrocatalysts for the conversion of CO_(2) to CO,but seldom do they exhibit excellent selectivity toward *** this article,we demonstrate that a heterointerface catalyst ZnO/ZnSnO3 with nanosheet morphology shows enhanced selectivity with a maximum Faradaic efficiency(FE)of 86%at−0.9 V versus reversible hydrogen electrode and larger current density for the conversion of CO_(2) to formate than pristine ZnO and *** particular,the FEs of the C1 products(CO+HCOO−)exceed 98%over the potential *** experimental measurements combined with theoretical calculations revealed that the ZnO in ZnO/ZnSnO3 heterojunction delivers the valence electron depletion and accordingly optimizes Zn d-band center,which results in moderate Zn-O hybridization of HCOO*and weakened Zn-C hybridization of competing COOH*,thus greatly boosting the HCOOH *** study highlights the importance of charge redistribution in catalysts on the selectivity of electrochemical CO_(2) reduction.

关键词： charge redistribution CO_(2)reduction reaction electrocatalyst heterointerfaces selectivity

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CT在泌尿系结石诊疗中的应用进展

中华腔镜泌尿外科杂志（电子版） 2023年第3期17卷 299-302页

作者：周子健吴忠复旦大学附属华山医院泌尿外科上海200040 复旦大学上海医学院泌尿系结石诊疗研究中心 200032

泌尿系结石在世界范围内的发病率为1%~20%,在我国的发病率为5%~8%[1]。从整体上看,我国农村地区发病率比城镇地区高,南方地区高于北方地区,其差异可能与种族、气候、饮食习惯及经济发展程度有关[2]。泌尿系结石也是引起尿路感染和腰痛... 详细信息

泌尿系结石在世界范围内的发病率为1%~20%,在我国的发病率为5%~8%[1]。从整体上看,我国农村地区发病率比城镇地区高,南方地区高于北方地区,其差异可能与种族、气候、饮食习惯及经济发展程度有关[2]。泌尿系结石也是引起尿路感染和腰痛的主要原因,不及时解除梗阻还可能导致肾功能不可逆性损伤[3]。CT是目前泌尿系结石诊疗中最常见、最重要的影像学检查[4]。相比于超声、泌尿系平片(kidney ureter bladder,KUB)或静脉肾盂造影(intravenous pyelogram,IVP),CT分辨率高,并且可以从不同平面和角度直观地反映结石的位置、形态和大小[5]。由于CT在泌尿系结石检查中的高灵敏性和高特异性,CT已经被认为是结石患者初始诊断和后期随访的金标准[6]。近年来,CT还被广泛应用于辅助泌尿系结石的微创治疗[7]。目前泌尿外科已经进入了微创治疗时代,泌尿系结石的微创治疗取得了巨大的进展,主要包括体外冲击波碎石术(extracorporeal shock wave lithotripsy,ESWL)、经皮肾镜碎石取石术(percutaneous nephrolithotomy,PCNL)、输尿管镜碎石取石术(ureteroscopy,URS)及输尿管软镜碎石取石术(flexible ureteroscopy,FURS)等[8]。CT技术的快速发展为泌尿系结石的诊疗过程带来了巨大变革,本文就此进行综述。

关键词：非增强,低剂量,超低剂量,双能,CT 结石 CT尿路造影 CT值三维重建结石成分分析结石清除率疗效预测

Delay-optimal multi-satellite collaborative computation offloading supported by OISL in LEO satellite network

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Journal of Systems Engineering and Electronics 2024年第4期35卷 805-814页

作者： ZHANG Tingting GUO zijian LI Bin FENG Yuan FU Qi HU Mingyu QU Yunbo School of Integrated Circuits and Electronics Beijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy Beijing Institute of TechnologyJiaxing 314000China School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China China Research and Development Academy of Machinery Equipment Beijing 100089China

By deploying the ubiquitous and reliable coverage of low Earth orbit(LEO)satellite networks using optical inter satel-lite link(OISL),computation offloading services can be provided for any users without proximal servers,while the resource limita-tion of both computation and storage on satellites is the impor-tant factor affecting the maximum task completion *** this paper,we study a delay-optimal multi-satellite collaborative computation offloading scheme that allows satellites to actively migrate tasks among themselves by employing the high-speed OISLs,such that tasks with long queuing delay will be served as quickly as possible by utilizing idle computation resources in the *** satisfy the delay requirement of delay-sensi-tive task,we first propose a deadline-aware task scheduling scheme in which a priority model is constructed to sort the order of tasks being served based on its deadline,and then a delay-optimal collaborative offloading scheme is derived such that the tasks which cannot be completed locally can be migrated to other idle *** results demonstrate the effective-ness of our multi-satellite collaborative computation offloading strategy in reducing task complement time and improving resource utilization of the LEO satellite network.

关键词： low Earth orbit(LEO)satellite network computation offloading task migration resource allocation

Cath-KP,a novel peptide derived from frog skin,prevents oxidative stress damage in a Parkinson’s disease model

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Zoological Research 2024年第1期45卷 108-124页

作者： Huanpeng Lu Jinwei Chai zijian Xu Jiena Wu Songzhe He Hang Liao Peng Huang Xiaowen Huang Xi Chen Haishan Jiang Shaogang Qu Xueqing Xu Department of Neurology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical SciencesSouthern Medical UniversityGuangzhouGuangdong 510515China Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence GuangzhouGuangdong 510515China Key Laboratory of Mental Health of the Ministry of Education Southern Medical UniversityGuangzhouGuangdong 510515China Department of Dermatology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China Department of Neurology Ganzhou Hospital-Nanfang HospitalSouthern Medical UniversityGanzhouJiangxi 341001China

Parkinson’s disease(PD)is a neurodegenerative condition that results in dyskinesia,with oxidative stress playing a pivotal role in its *** peptides may thus present therapeutic potential for *** this study,a novel cathelicidin peptide(Cath-KP;GCSGRFCNLF NNRRPGRLTLIHRPGGDKRTSTGLIYV)was identified from the skin of the Asiatic painted frog(Kaloula pulchra).Structural analysis using circular dichroism and homology modeling revealed a uniqueαββconformation for *** vitro experiments,including free radical scavenging and ferric-reducing antioxidant analyses,confirmed its antioxidant *** the 1-methyl-4-phenylpyridinium ion(MPP^(+))-induced dopamine cell line and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)-induced PD mice,Cath-KP was found to penetrate cells and reach deep brain tissues,resulting in improved MPP^(+)-induced cell viability and reduced oxidative stress-induced damage by promoting antioxidant enzyme expression and alleviating mitochondrial and intracellular reactive oxygen species accumulation through Sirtuin-1(Sirt1)/Nuclear factor erythroid 2-related factor 2(Nrf2)pathway *** focal adhesion kinase(FAK)and p38 were also identified as regulatory *** the MPTP-induced PD mice,Cath-KP administration increased the number of tyrosine hydroxylase(TH)-positive neurons,restored TH content,and ameliorated *** the best of our knowledge,this study is the first to report on a cathelicidin peptide demonstrating potent antioxidant and neuroprotective properties in a PD model by targeting oxidative *** findings expand the known functions of cathelicidins,and hold promise for the development of therapeutic agents for PD.

关键词： Cath-KP Peptide Parkinson’s disease Oxidative stress Neuroprotection

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输尿管软镜技术的发展现状和未来

临床泌尿外科杂志 2023年第7期38卷 553-556,561页

作者：周子健吴忠复旦大学附属华山医院泌尿外科、复旦大学上海医学院泌尿系结石诊疗研究中心上海200040

输尿管软镜技术目前主要用于治疗尿石症,自问世至今不断更新发展,特别是近10年有了划时代的发展,如机器人辅助输尿管软镜技术、输尿管软镜联合负压吸引技术及人工智能输尿管软镜技术等,这些进步使输尿管软镜手术的适应证不断扩大。本文... 详细信息

输尿管软镜技术目前主要用于治疗尿石症,自问世至今不断更新发展,特别是近10年有了划时代的发展,如机器人辅助输尿管软镜技术、输尿管软镜联合负压吸引技术及人工智能输尿管软镜技术等,这些进步使输尿管软镜手术的适应证不断扩大。本文就输尿管软镜技术的发展与未来进行综述。

关键词：输尿管软镜尿石症技术进展

The COVID-19 Vaccines Evaluation Program:Implementation,Management,and Experiences,2021-2023

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China CDC weekly 2024年第26期6卷 642-648页

作者： Tingting Yan Hui Zheng Mingshuang Li Chao Ma Xuanyi Wang Xiaoqi Wang Zhenjun Li Yuansheng Chen Wenshang Hu Lance Rodewald Zhijie An Zundong Yin zijian Feng National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases(NITFID).National Immunization Program Chinese Center for Disease Control and PreventionBeijingChina Institutes of Biomedical Sciences Fudan UniversityShanghaiChina Office of International Cooperation Chinese Center for Disease Control and PreventionBeijingChina Office of Science and Technology Chinese Center for Disease Control and PreventionBeijingChina Office of Finance Chinese Center for Disease Control and PreventionBeijingChina Chinese Preventive Medicine Association BeijingChina

In 2021,China’s domestically produced coronavirus disease 2019(COVID-19)vaccines received approval from regulatory bodies and were administered *** to a low number of infections within China during that period,it became imperative to evaluate the vaccines’real-world effectiveness through international *** facilitate this,China CDC launched the COVID-19 Vaccines Evaluation Program(COVEP).This program formed research collaboration agreements with health institutes across five World Health Organization regions,addressing key questions about vaccine performance through ten cooperative *** findings from COVEP projects reinforced confidence,both domestically and globally,in the effectiveness of the vaccines produced in ***,the outcomes observed internationally were frequently mirrored by later studies conducted within *** thus pioneered a novel approach for fostering cross-national research collaborations,addressing significant public health issues and exemplifying a framework for international *** approach is in line with the strategic objectives and other development efforts of China CDC’s national disease control and prevention initiatives.

关键词： approval COV prevention

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农业保险是否促进了中国农业绿色发展?

华中农业大学学报（社会科学版） 2024年第1期 49-61页

作者：周月书尹梓鉴南京农业大学金融学院/金善宝农业现代化发展研究院江苏南京210095

农业保险是中国农业绿色发展的助推器。基于2005-2020年中国省级面板数据,以农业绿色全要素生产率作为绿色发展水平的度量,运用超效率SBM模型结合Malmquist-Luenberger生产率指数测算中国农业绿色全要素生产率,通过双向固定效应模型分... 详细信息

农业保险是中国农业绿色发展的助推器。基于2005-2020年中国省级面板数据,以农业绿色全要素生产率作为绿色发展水平的度量,运用超效率SBM模型结合Malmquist-Luenberger生产率指数测算中国农业绿色全要素生产率,通过双向固定效应模型分析农业保险对农业绿色全要素生产率的影响。研究表明:农业保险可以显著促进农业绿色全要素生产率增长,农业保险保费收入每增加1%,农业绿色全要素生产率将会增加0.024%,农业保险能够促进中国农业绿色发展;机制分析发现,优化要素配置是农业保险提升农业绿色全要素生产率的有效机制,但农业保险对推动中国农业绿色生产前沿面的扩张作用不显著;异质性分析发现,在农业信贷薄弱地区、西部地区、非粮食主产区以及土地流转率低的地区,农业保险对农业绿色全要素生产率的促进作用更强,农业保险具有绿色普惠效应;同时农业保险能够促进免耕、精播少播以及秸秆还田等绿色农业技术的应用。基于此,从完善农业保险保费补贴制度、提高农业保险保障水平、推出绿色险种等方面提出政策建议。

关键词：农业保险绿色发展农业绿色全要素生产率要素配置绿色农业技术

2013至2022年国家自然科学基金核医学与分子影像领域研究项目资助情况分析

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中华核医学与分子影像杂志 2023年第9期43卷 554-558页

作者：张茗昱郭伟圣周子健曹河圻国家自然科学基金委员会医学科学部北京100085 首都医科大学附属北京友谊医院核医学科北京100050 广州医科大学生物医学工程学院广州511430 厦门大学分子影像暨转化医学研究中心厦门361102

目的分析2013至2022年国家自然科学基金委员会(NSFC)在核医学与分子影像领域各类项目申请与资助情况,探讨该领域基础研究及临床转化面临的挑战。方法回顾性收集2013至2022年NSFC医学科学部五处申请与资助的核医学与分子影像领域(二级代... 详细信息

目的分析2013至2022年国家自然科学基金委员会(NSFC)在核医学与分子影像领域各类项目申请与资助情况,探讨该领域基础研究及临床转化面临的挑战。方法回顾性收集2013至2022年NSFC医学科学部五处申请与资助的核医学与分子影像领域(二级代码H2704、H2706)各类项目数据资料,分析该领域各类项目申请数量、资助数量、资助方向、资助强度、依托单位分布情况及研究热点等。结果2013至2022年,NSFC共接收核医学与分子影像领域各类项目申请5397项,总资助数量899项,申请与资助数量呈稳步增长趋势。整体资助强度从2013年的4893.50万元增长至2022年的5949.54万元,增幅21.58%。在所有依托单位中,上海交通大学在申请数量(440项)和资助数量(82项)上位居首位,厦门大学在整体资助率上位居首位(25.42%,30/118),北京大学的总资助金额最高(4189.71万元)。研究热点聚焦于肿瘤靶向分子探针的构建和肿瘤内部分子成分的精准显像等。结论近10年NSFC在核医学与分子影像领域的资助项目数及总经费稳步增长,资助项目种类多样、学科交叉广泛,推动了我国核医学与分子影像学科的创新发展。

关键词：研究资助(主题) 核医学分子显像国家自然科学基金

Evidence for distortion-induced local electric polarization in α-RuCl3

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Science China(Physics,Mechanics & Astronomy) 2024年第9期Mechanics & Astronomy) .卷 169-177页

作者： Xinrun Mi De Hou Xiao Wang Sabreen Hammouda Caixing Liu zijian Xiong Han Li Yan Liu Guiwen Wang Aifeng Wang Yisheng Chai Yang Qi Wei Li Xiaoyuan zhou Yixi Su D.I.Khomskii Mingquan He Zhigao Sheng Young Sun College of Physics Center of Quantum Materials and DevicesChongqing University Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryHefei Institutes of Physical ScienceAnhuiChinese Academy of Sciences University of Science and Technology of China Jülich Centre for Neutron Scienceat Heinz Maier-Leibnitz Zentrum(JCNS-MLZ) Forschungszentrum Jülich GmbH School of Physics Beihang University Analytical and Testing Center Chongqing University State Key Laboratory of Surface Physics Department of PhysicsFudan University CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences Ⅱ.Physikalisches Institut Universit?t zu K?ln

The spin-orbit assisted Mott insulator α-RuCl3is a prime candidate for material realization of the Kitaev quantum spin *** little attention has been paid to charge degrees of freedom, charge effects, such as electric polarization, may arise in this system. Here, we report distortion-induced local electric polarization in α-RuCl3as evidenced by single-crystal X-ray diffraction,second harmonic generation（SHG） and dielectric measurements. The SHG signal appears at room temperature and develops substantially in the Kitaev paramagnetic state when short-range spin correlations come into play. Despite sizable pyroelectric currents in the Kitaev paramagnetic state, the absence of hysteresis in the polarization-electric field（P-E） points to the shortrange nature of electric polarization. This localized electric polarization is likely the result of distortion-induced charge dimerization, achieved through virtual hopping-induced charge redistribution. In addition, the electric polarization is boosted by short-range spin correlations via spin-phonon coupling in the Kitaev paramagnetic state. Our results emphasize the importance of charge degrees of freedom in α-RuCl3, which establish a novel platform to investigate charge effects in Kitaev materials.

关键词： Mott insulator Kitaev quantum spin liquid electric polarization