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Mesospheric tide comparisons at low latitudes observed by two collocated meteor radars

Earth and Planetary Physics 2025年第1期9卷 54-68页

作者： Jian li Wen Yi xiangHui Xue Jie Zeng HaiLun Ye JianYuan Wang JinSong chen Na li TingDi chen Chinese Academy of Sciences(CAS)Key Laboratory of Geospace Environment Department of Geophysics and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology Anhui Mengcheng Geophysics National Observation and Research StationUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China National Key Laboratory of Electromagnetic Environment China Research Institute of Radiowave PropagationQingdao 266107China Yunnan Kunming Electromagnetic Environment National Observation and Research Station Qujing Kunming 655000China

Accurate knowledge of mesospheric winds and waves is essential for studying the dynamics and climate in the mesosphere and lower thermosphere(MLT)*** this study,we conduct a comparative analysis of the mesosphere tidal results obtained from two adjacent meteor radars at low latitudes in Kunming,China,from November 2013 to December *** two radars operate at different frequencies of 37.5 MHz and 53.1 MHz,***,overall good agreement is observed between the two radars in terms of horizontal winds and tide *** results show that the dominant tidal waves of the zonal and meridional winds are diurnal and semidiurnal ***,we conduct an exhaustive statistical analysis to compare the tidal amplitudes and vertical wavelengths recorded by the dual radar systems,which reveals a high degree of alignment in tidal *** investigation includes variances and covariances of tidal amplitudes,which demonstrate remarkable consistency across measurements from both *** finding highlights clear uniformity in the mesospheric tidal patterns observed at low latitudes by the two neighboring meteor *** of the comparative analysis specifically underscore the significant correlation in vertical wavelength measurements,validating the robustness of radar observations for tidal research.

关键词： mesosphere and lower thermosphere region meteor radar mesospheric winds tides

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Fabrication of carbon-supported Al2O3 nanoparticles via spontaneous cross-linking to enhance selective hydrogenation of furfural

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Journal of Energy Chemistry 2025年第1期100卷 612-620页

作者： Weiwei Yu xinbao Zhang Hongyu chen Yanan Wang Shaoguo li Fucun chen Zhenni liu xiujie li xiangxue Zhu State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Selective hydrogenation of furfural to furfuryl alcohol is a great challenge in the hydrogenation field due to thermodynamic preference for hydrogenation of C=C over C=***,a novel Al2O3/C-u hybrid catalyst,composed of N-modified dendritic carbon networks supporting Al2O3nanoparticles,was successfully prepared via carbonizing the freeze-dried gel from spontaneous cross-linking of alginate,Al3+and *** obtained carbon-supported Al2O3hybrid catalyst has a high ratio （31%） of Al species in pentahedral-coordinated *** introduction of urea enhances the surface N content,the ratio of pyrrolic N,and specific surface area of catalyst,leading to improved adsorption capacity of C=O and the accessibility of active *** the furfural hydrogenation reaction with isopropyl alcohol as hydrogen donor,Al2O3/C-u catalyst achieved a 90%conversion of furfural with 98.0% selectivity to furfuryl alcohol,outperforming that of commercial γ-***,Al2O3/C-u demonstrates excellent catalytic stability in the recycling tests attributed to the synergistic effect of abundant weak Lewis acid sites and the anchoring effect of the carbon network on *** work provides an innovative and facile strategy for fabrication of carbon-supported Al2O3hybrid catalysts with rich AlVspecies,serving as a high selective hydrogenation catalyst through MPV reaction route.

关键词： Selective hydrogenation Furfural Furfuryl alcohol Cross-linking MPV route

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当归炮制品9种化学成分的比较研究

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中药新药与临床药理 2017年第1期28卷 88-92页

作者：陶益陈西李伟东蔡宝昌南京中医药大学中药炮制重点实验室江苏南京210023

目的比较当归生品、酒品、炭品及土炒品的质控指标及主要化学成分的差异。方法按照《中国药典》(2015版)标准,测定当归不同炮制品的水分、总灰分、酸不溶性灰分、醇溶性浸出物及阿魏酸含量,考察HPLC方法的线性、精密度、稳定性、重复性... 详细信息

目的比较当归生品、酒品、炭品及土炒品的质控指标及主要化学成分的差异。方法按照《中国药典》(2015版)标准,测定当归不同炮制品的水分、总灰分、酸不溶性灰分、醇溶性浸出物及阿魏酸含量,考察HPLC方法的线性、精密度、稳定性、重复性及加样回收率。同时采用HPLC-Q-TOF/MS法鉴定当归不同炮制品的9种主要化学成分,并用HPLC法比较各当归炮制品中9种主要化学成分相对含量的差异。结果各当归炮制品的水分、总灰分、醇溶性浸出物测定结果均符合《中国药典》(2015版)的要求。生当归和酒当归的阿魏酸含量分别为0.061%和0.050%,符合《中国药典》(2015版)要求。运用高分辨质谱鉴定了9个主要化学成分,分别为邻苯二甲酸、阿魏酸、肉桂酸、洋川芎内酯I、洋川芎内酯A、(E)-藁苯内酯、(Z)-藁苯内酯、新当归内酯、欧当归内酯A。结论当归酒炙后挥发油成分含量降低,可能有助于舒缓子宫的兴奋,使子宫收缩平缓,发挥稳定的活血通经作用;当归土炒后挥发油成分含量降低,土炒缓和油润而不滑肠作用可能与此有关。当归炮制后挥发油成分含量下降,与传统炮制理论吻合。

关键词：当归炮制生当归酒当归当归炭土炒当归高效液相-质谱联用法

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高职学生创新素质结构及其现状分析

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辽宁高职学报 2016年第10期18卷 84-86页

作者：邓晨曦李侠沈阳职业技术学院辽宁沈阳110045

通过问卷调查及因素分析表明,高职学生创新素质由创新意识和创新能力两方面构成。其中创新能力包含实践能力、批判及想象能力、目标规划能力和选择信息能力四个维度。在此基础上,分析探讨了高职学生创新素质水平并为高职院校提出学生创... 详细信息

通过问卷调查及因素分析表明,高职学生创新素质由创新意识和创新能力两方面构成。其中创新能力包含实践能力、批判及想象能力、目标规划能力和选择信息能力四个维度。在此基础上,分析探讨了高职学生创新素质水平并为高职院校提出学生创新素质培养建议。

关键词：创新素质结构现状策略

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微孔板法评价碘伏的消毒效果研究

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中国消毒学杂志 2016年第9期33卷 853-855页

作者：王珂陈茜文张力平首都医科大学基础医学实验教学中心北京100069

目的利用微孔板建立微量试验法检测碘伏的抑菌和杀菌效果。方法用微孔板法鉴定中和剂对碘伏的中和效果;用微孔板悬液定量杀菌试验检测碘伏对金黄色葡萄球菌和大肠埃希菌的杀灭效果;用微量肉汤法检测碘伏对金黄色葡萄球菌和大肠埃希菌的... 详细信息

目的利用微孔板建立微量试验法检测碘伏的抑菌和杀菌效果。方法用微孔板法鉴定中和剂对碘伏的中和效果;用微孔板悬液定量杀菌试验检测碘伏对金黄色葡萄球菌和大肠埃希菌的杀灭效果;用微量肉汤法检测碘伏对金黄色葡萄球菌和大肠埃希菌的最小抑菌浓度,平板划线后计算最小杀菌浓度。结果微孔板悬液定量杀灭实验显示,310~2 500 mg/L的碘伏随作用时间(30 s^5 min)延长,对金黄色葡萄球菌和大肠埃希菌的杀灭作用逐渐增强。碘伏对两种细菌的最小抑菌浓度和最小杀菌浓度均为625 mg/L。结论微孔板法可用于检测碘伏对常见细菌的抑菌和杀菌效果。

关键词：碘伏微孔板法抑菌作用杀菌作用

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层次分析法在物流企业仓库选址中的运用

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上海海运学院学报 2002年第3期23卷 54-57页

作者：陈炜奚立峰上海交通大学管理学院上海200030

物流市场竞争的加剧要求企业经营者不断提高物流服务质量以加强企业竞争力。仓库选址作为物流企业提高物流服务质量的战略决策 ,需要企业决策者综合考虑地理条件、顾客、管理等因素后迅速作出判断。这是一项复杂的任务。层次分析法 (AHP... 详细信息

物流市场竞争的加剧要求企业经营者不断提高物流服务质量以加强企业竞争力。仓库选址作为物流企业提高物流服务质量的战略决策 ,需要企业决策者综合考虑地理条件、顾客、管理等因素后迅速作出判断。这是一项复杂的任务。层次分析法 (AHP)是一种利用专家经验将定性的综合判断转化为具体的定量判定的方法。运用AHP ,可以对物流企业的仓库选点和战略决策提供比建立数学模型更方便可行的分析方法。

关键词：物流企业仓库选址层次分析法权重数据仓库联机事务处理

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新冠肺炎疫情战疫中干部激励与问责的经验与启示——以湖北战“疫”为例

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中国应急管理科学 2021年第7期 97-104页

作者：周莉陈曦李又才中共湖北省委党校

2020年初突发新冠肺炎疫情,湖北处于疫情重灾区。抗击疫情,武汉胜则湖北胜,湖北胜则全国胜。为此党中央和湖北省委相继出台了一系列干部激励与问责政策措施。火线提拔(晋级)、火线入党、表彰、关爱一线干部职工等正向激励和免职、警告... 详细信息

2020年初突发新冠肺炎疫情,湖北处于疫情重灾区。抗击疫情,武汉胜则湖北胜,湖北胜则全国胜。为此党中央和湖北省委相继出台了一系列干部激励与问责政策措施。火线提拔(晋级)、火线入党、表彰、关爱一线干部职工等正向激励和免职、警告、记过等严厉问责,为战胜新冠肺炎疫情提供了坚强组织保障,也为今后防控公共突发事件提供了经验和启示。

关键词：新冠肺炎疫情防控激励问责经验启示湖北

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Utilizing engineered extracellular vesicles as delivery vectors in the management of ischemic stroke:a special outlook on mitochondrial delivery

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Neural Regeneration Research 2025年第8期20卷 2181-2198页

作者： Jiali chen Yiyang li xingping Quan Jinfen chen Yan Han li Yang Manfei Zhou Greta Seng Peng Mok Ruibing Wang Yonghua Zhao Institute of Chinese Medical Sciences State Key Laboratory of Quality Research in Chinese MedicineUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Pharmacy Hunan Provincial People’s Hospitalthe First Affiliated Hospital of Hunan Normal UniversityChangshaHunan ProvinceChina Department of Electrical and Computer Engineering University of MacaoTaipaMacao Special Administrative RegionChina Department of Pharmaceutical Sciences Faculty of Health SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina

Ischemic stroke is a secondary cause of mortality worldwide,imposing considerable medical and economic burdens on *** vesicles,serving as natural nanocarriers for drug delivery,exhibit excellent biocompatibility in vivo and have significant advantages in the management of ischemic ***,the uncertain distribution and rapid clearance of extracellular vesicles impede their delivery *** utilizing membrane decoration or by encapsulating therapeutic cargo within extracellular vesicles,their delivery efficacy may be greatly ***,previous studies have indicated that microvesicles,a subset of large-sized extracellular vesicles,can transport mitochondria to neighboring cells,thereby aiding in the restoration of mitochondrial function post-ischemic *** extracellular vesicles have also demonstrated the capability to transfer mitochondrial components,such as proteins or deoxyribonucleic acid,or their sub-components,for extracellular vesicle-based ischemic stroke *** this review,we undertake a comparative analysis of the isolation techniques employed for extracellular vesicles and present an overview of the current dominant extracellular vesicle modification *** the complex facets of treating ischemic stroke,we also delineate various extracellular vesicle modification approaches which are suited to different facets of the treatment ***,given the burgeoning interest in mitochondrial delivery,we delved into the feasibility and existing research findings on the transportation of mitochondrial fractions or intact mitochondria through small extracellular vesicles and microvesicles to offer a fresh perspective on ischemic stroke therapy.

关键词： delivery engineering extracellular vesicles identification ischemic stroke isolation mitochondria targeting strategy therapeutic effects

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Unraveling post-growth mechanisms of monolayer CsPbBr3 nanocubes:Laser-enhanced transformations and cathodoluminescence-electron microscopy correlations

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Journal of Energy Chemistry 2025年第1期100卷 146-156页

作者： Mingxing li xiaoge Wang xiaofan Cao Zhiqun He Chunjun liang Mingxing chen Jing Ju Fangtian You Key Laboratory of Luminescence and Optical Information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing National Laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University

Lead-halide perovskite nanoparticles（LHP NPs） are highly promising materials for next-generation displays and solid-state lighting due to their exceptional optical properties. However, their inherent instability presents a significant challenge. Recent advances have demonstrated that optoelectronic devices based on monolayer nanoparticle films exhibit both high luminescence efficiency and long-term *** research demonstrates that mobility limitations and anisotropic alignments in CsPbBr3nanocube monolayer films are key to their stabilization, hindering spontaneous growth through face-to-face fusion and resulting in the formation of connecting necks in a diagonal direction. Introducing laser irradiation confirmed this by significantly accelerating nanocubes growth, increasing mobility, and enhancing local structural ordering, leading to larger and more regularly shaped nanosheets. Fourier transform infrared spectroscopy and energy dispersive spectroscopy line-scan analyses indicated that laser irradiation did not disrupt the ligand structure. Transmission electron microscopy and correlative cathodoluminescence electron microscopy revealed the effects of post-growth and heterogeneous structures, including enhanced luminescence and inhomogeneous intensity in the nanosheets. These findings deepen the understanding of the post-growth mechanism of monolayer nanoparticles and the structure-emission correlation and highlight the unique role of laser irradiation in directing the formation of well-defined and regular nanostructures.

关键词： Post-growth mechanism Heterogeneous structure Single-particle spectroscopy Laser irradiation

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High-energy-density lithium manganese iron phosphate for lithium-ion batteries: Progresses, challenges, and prospects

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Journal of Energy Chemistry 2025年第1期100卷 1-17页

作者： Bokun Zhang xiaoyun Wang Shuai Wang Yan li libo chen Handong Jiao Zhijing Yu Jiguo Tu State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Research Institute for Intelligent Wearable Systems The Hong Kong Polytechnic University Institute of Advanced Structure Technology Beijing Institute of Technology

The soaring demand for smart portable electronics and electric vehicles is propelling the advancements in high-energy–density lithium-ion *** manganese iron phosphate (liMnxFe1-xPO4) has garnered significant attention as a promising positive electrode material for lithium-ion batteries due to its advantages of low cost,high safety,long cycle life,high voltage,good high-temperature performance,and high energy *** liMnxFe1-xPO4has made significant breakthroughs in the past few decades,there are still facing great challenges in poor electronic conductivity and li-ion diffusion,manganese dissolution affecting battery cycling performance,as well as low tap *** review systematically summarizes the reaction mechanisms,various synthesis methods,and electrochemical properties of liMnxFe1-xPO4to analyze reaction processes accurately and guide material ***,the main challenges currently faced are concluded,and the corresponding various modification strategies are discussed to enhance the reaction kinetics and electrochemical performance of liMnxFe1-xPO4,including multi-scale particle regulation,heteroatom doping,surface coating,as well as microscopic morphology ***,in view of the current research challenges faced by intrinsic reaction processes,kinetics,and energy storage applications,the promising research directions are *** importantly,it is expected to provide key insights into the development of high-performance and stable liMnxFe1-xPO4materials,to achieve practical energy storage requirements.

关键词： lithium manganese iron phosphate High energy density lithium-ion batteries Reaction mechanism Tap density

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