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Designing Electronic Structures of Multiscale Helical Converters for Tailored Ultrabroad Electromagnetic Absorption

Nano-Micro Letters 2025年第1期17卷 439-455页

作者： Zhaobo Feng Chongbo Liu Xin Li Guangsheng Luo Naixin Zhai Ruizhe Hu Jing Lin Jinbin peng Yuhui peng Renchao Che Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle School of Environmental and Chemical EngineeringNanchang Hangkong UniversityNanchang 330063People’s Republic of China School of Physics and Materials Nanchang UniversityNanchang 330031People’s Republic of China Key Laboratory of Nondestructive Testing Ministry of EducationNanchang Hangkong UniversityNanchang 330063People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People’s Republic of China

Atomic-scale doping strategies and structure design play pivotal roles in tailoring the electronic structure and physicochemical property of electromagnetic wave absorption(EMWA)***,the relationship between configuration and electromagnetic(EM)loss mechanism has remained ***,drawing inspiration from the DNA transcription process,we report the successful synthesis of novel in situ Mn/N co-doped helical carbon nanotubes with ultrabroad EMWA *** calculation and EM simulation confirm that the orbital coupling and spin polarization of the Mn–N4–C configuration,along with cross polarization generated by the helical structure,endow the helical converters with enhanced EM *** a result,HMC-8 demonstrates outstanding EMWA performance,achieving a minimum reflection loss of−63.13 dB at an ultralow thickness of 1.29 *** precise tuning of the graphite domain size,HMC-7 achieves an effective absorption bandwidth(EAB)of 6.08 GHz at 2.02 mm ***,constructing macroscale gradient metamaterials enables an ultrabroadband EAB of 12.16 GHz at a thickness of only 5.00 mm,with the maximum radar cross section reduction value reaching 36.4 dB *** innovative approach not only advances the understanding of metal–nonmetal co-doping but also realizes broadband EMWA,thus contributing to the development of EMWA mechanisms and applications.

关键词： Metal-nonmetal co-doping 3d-2p orbital coupling Spin polarization Helical structure Broadband EM wave absorption

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Low-cost and fluoride-free synthesis of MFI zeolite nanosheets with enhanced stability for benzene alkylation with ethanol

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Journal of Energy Chemistry 2025年第1期100卷 458-468页

作者： peng Zhu Cun Liu Yiren Yu Guoshu Gao Yumeng Zhao Xiongfu Zhang Guodong Liu Guohui Yang State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Zeolite nanosheets with a short b-axis thickness are highly desirable in lots of catalytic reactions due to their reduced diffusion resistance. Nevertheless, conventional synthesis methods usually require expensive structure-directing agents(SDAs), pricey raw materials, and eco-unfriendly fluorine-containing additives. Here, we contributed a cost-effective and fluoride-free synthesis method for synthesizing high-quality MFI zeolite nanosheets through a Silicalite-1(Sil-1) seed suspension and urea cooperative strategy, only with inexpensive colloidal silica as the Si source. Our approach was effective for synthesizing both Sil-1 and aluminum-containing ZSM-5 nanosheets. By optimizing key synthesis parameters,including seed aging time, seed quantity, and urea concentration, we achieved precise control over the crystal face aspect ratio and b-axis thickness. We also revealed a non-classical oriented nanosheet growth mechanism, where Sil-1 seeds induced the formation of quasi-ordered precursor particles, and the(010)crystal planes of these particles facilitated urea adsorption, thereby promoting c-axis-oriented *** obtained ZSM-5 nanosheets exhibited exceptional catalytic performance in the benzene alkylation with ethanol, maintaining stability for over 500 h, which is 5 times longer than traditional ZSM-5 catalysts. Furthermore, large-scale production of ZSM-5 nanosheets was successfully carried out in a 3 L highpressure autoclave, yielding samples consistent with those from laboratory-scale synthesis. This work marks a significant step forward in the sustainable and efficient production of MFI nanosheets using inexpensive and environmentally friendly raw materials, offering the broad applicability in catalysis.

关键词： MFI zeolite ZSM-5 Nanosheets Scale-up synthesis Aromatic alkylation

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Targeting capabilities of engineered extracellular vesicles for the treatment of neurological diseases

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Neural Regeneration Research 2025年第11期20卷 3076-3094页

作者： Xinyu Yang Xiangyu Gao Xiaofan Jiang Kangyi Yue peng Luo Department of Neurosurgery Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina

Recent advances in research on extracellular vesicles have significantly enhanced their potential as therapeutic agents for neurological *** to their therapeutic properties and ability to cross the blood–brain barrier,extracellular vesicles are recognized as promising drug delivery vehicles for various neurological conditions,including ischemic stroke,traumatic brain injury,neurodegenerative diseases,glioma,and ***,the clinical application of natural extracellular vesicles is hindered by their limited targeting ability and short clearance from the *** address these limitations,multiple engineering strategies have been developed to enhance the targeting capabilities of extracellular vesicles,thereby enabling the delivery of therapeutic contents to specific tissues or ***,this review aims to highlight the latest advancements in natural and targeting-engineered extracellular vesicles,exploring their applications in treating traumatic brain injury,ischemic stroke,Parkinson's disease,Alzheimer's disease,amyotrophic lateral sclerosis,glioma,and ***,we summarized recent clinical trials involving extracellular vesicles and discussed the challenges and future prospects of using targeting-engineered extracellular vesicles for drug delivery in treating neurological *** review offers new insights for developing highly targeted therapies in this field.

关键词： Alzheimer's disease amyotrophic lateral sclerosis engineered extracellular vesicles glioma ischemic stroke neurological diseases Parkinson's disease psychosis targeted drug delivery traumatic brain injury

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Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： peng Li Meifeng Cai Shengjun Miao Yuan Li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

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孕前优生信息化服务模式的探索研究

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中国计划生育学杂志 2013年第4期21卷 227-230页

作者：辛晓娜王媛媛马立广张亚彭左旗马旭国家人口计生委科学技术研究所北京100081 北京协和医学院研究生院

目的:探索利用现代化信息技术手段开展孕前保健服务的新模式,提高我国计划生育工作的管理水平和服务水平。方法:将信息技术手段应用在出生缺陷一级预防领域,对传统孕前保健服务模式面临的问题提出解决对策,形成统一规范的信息工作平台,... 详细信息

目的:探索利用现代化信息技术手段开展孕前保健服务的新模式,提高我国计划生育工作的管理水平和服务水平。方法:将信息技术手段应用在出生缺陷一级预防领域,对传统孕前保健服务模式面临的问题提出解决对策,形成统一规范的信息工作平台,采用建立电子生殖健康档案的方法探索符合我国人口现状和特征的信息化服务模式。结果:以信息化手段开展孕前优生服务,规范了海量家庭档案的管理。利用计算机辅助智能分析的方法,有效提升了服务人员的技术水平和工作效率,扩大了服务人群。结论:信息技术的应用,为科学评估育龄夫妇的生殖健康状况和生殖风险提供了可能,促进了出生缺陷的一级预防工作的开展,在信息化建设中应注意处理好几个重要环节,以加快我国人口和计划生育工作的信息化建设的步伐。

关键词：出生缺陷信息化孕前优生服务模式育龄人群

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孕前BMI和孕期增重与孕期血压水平的相关性研究

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中国计划生育学杂志 2018年第10期26卷 941-946页

作者：胥芹杨英蔺莉陈业群王龙彭左旗王兴宇马旭北京协和医学院研究生院 100730 国家卫生计生委科学技术研究所首都医科大学附属北京友谊医院汕头大学医学院附属第一医院北京高血压联盟研究所

目的:探讨孕前BMI和孕早期、孕中期增重对孕期血压影响。方法:采用双向队列研究方法,纳入2014年3月—2015年12月在汕头大学医学院第一附属医院和北京友谊医院产检且无高血压和糖尿病病史的1269例20～49岁汉族孕妇为研究对象,在孕8～12... 详细信息

目的:探讨孕前BMI和孕早期、孕中期增重对孕期血压影响。方法:采用双向队列研究方法,纳入2014年3月—2015年12月在汕头大学医学院第一附属医院和北京友谊医院产检且无高血压和糖尿病病史的1269例20～49岁汉族孕妇为研究对象,在孕8～12周进行体检时回顾性收集孕前相关危险因素信息,分别在孕24,32,36周完成3次随访调查。采用线性混合效应模型评估孕前BMI和孕早、中期增重对孕期血压的影响,采用logistic回归模型评估孕前BMI和孕早、中期增重对妊娠期高血压疾病的影响。结果:经多因素调整,与正常体重组相比,低体重组收缩压(SBP)降低3.93mmHg(1mmHg=0.133kPa)(95%CI 4.71～3.15),超重和肥胖组SBP分别升高3.99(95%CI 2.93～5.05)和7.18mmHg(95%CI 5.50～8.87),趋势性检验P2.0kg组SBP和DBP分别增加1.88(95%CI 1.03～2.72)和0.54mmHg(95%CI-0.12～1.20);与孕中期增重介于IOM推荐范围组相比,增重高于推荐范围上限组SBP和DBP分别增加2.17(95%CI 1.12～3.23)和1.18mmHg(95%CI 0.37～1.99)。结论:孕前BMI水平与孕期SBP和DBP水平均存在线性趋势关系,孕早期和中期增重过量可引起孕期SBP升高,孕前超重和肥胖是妊娠期高血压疾病的危险因素。

关键词：孕前BMI 孕期增重血压妊娠期高血压疾病队列研究

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北京市传统模式下避孕药具发放成本测算研究

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中国计划生育学杂志 2015年第8期23卷 512-515页

作者：王媛媛彭左旗刘克军辛晓娜王梅马旭北京协和医学院研究生院 100730 国家卫生计生委科学技术研究所国家卫生计生委卫生发展研究中心

目的:利用卫生经济学方法,对北京市传统发放模式下药具发放成本及构成进行测算。方法:对北京市药具发放4级机构抽样进行成本核算专题调研,进而推演北京市2010年度药具发放总成本。结果:育龄妇女年人均药具发放成本约为每年16.93元/人,... 详细信息

目的:利用卫生经济学方法,对北京市传统发放模式下药具发放成本及构成进行测算。方法:对北京市药具发放4级机构抽样进行成本核算专题调研,进而推演北京市2010年度药具发放总成本。结果:育龄妇女年人均药具发放成本约为每年16.93元/人,推算药具发放总成本约为10 392万元;其中,药具成本占14.5%,固定成本占15.1%,人力成本占51.6%,日常运营成本占18.8%。结论:传统模式下药具发放成本中人力成本比重较大,亟需进行模式创新激发药具发放工作的内在活力。

关键词：避孕药具成本测算服务模式人力成本

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In situ polymerization of poly(3,4-ethylenedioxythiophene)protective layer towards stable zinc anode

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Nano Research 2025年第1期18卷 382-394页

作者： Debin Luo peng Zhou Xiaowei Lv Panpan Sun Xiaohua Sun Hewei Zhao College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Hubei Three Gorges Laboratory Yichang 443007China School of Chemistry Beihang UniversityBeijing 100191China

Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy ***,the dendrite growth,hydrogen evolution reaction(HER)and corrosion of the zinc anode significantly limit the development of Zn-ion ***,an inexpensive poly(3,4-ethylenedioxythiophene)(PEDOT)protective layer was constructed in situ on the Zn surface using electropolymerization to suppress dendrite growth and side reactions,thereby enhancing the reversibility of *** and theoretical calculations revealed that this hydrophilic protective layer promotes the desolvation process of hydrated Zn^(2+)and facilitates the transport of zinc ions,thus improving the thermodynamic and kinetic properties of Zn^(2+)deposition and inhibiting interfacial side ***,the optimized PEDOT@Zn symmetric battery exhibited a cycling stability exceeding 1250 h at 0.5 mA·cm^(-2)and 0.25 mAh·cm^(-2),with a significantly reduced overpotential(from 91.8 to 35 mV).With the assistance of the PEDOT protective layer,the PEDOT@Zn//Cu battery maintained approximately 99.5%Coulombic efficiency after 450 ***-situ scanning electron microscopy(SEM)and in situ optical microscopy characterizations further confirmed that the PEDOT protective layer can effectively suppress the growth of zinc ***,the Zn-ion capacitors assembled by the PEDOT@Zn and activated carbon also demonstrated outstanding cycling stability.

关键词： zinc-ion devices zinc anode poly(3 4-ethylenedioxythiophene)(PEDOT) dendrite desolvation process

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华北克拉通和巴西圣弗朗西斯科-刚果克拉通新元古代早期岩浆作用(ca.940~890Ma)序列与成因

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岩石学报 2025年第1期41卷 167-182页

作者：苏向东彭澎郑州大学生态与环境学院地热与生态地质研究中心郑州450001 中国科学院地质与地球物理研究所中国-巴西联合地学研究中心北京100029

华北克拉通和巴西圣弗朗西斯科-刚果克拉通新元古代早期的岩墙和岩床及玄武岩(ca.940~890Ma)岩浆活动时间对比和古地磁研究结果表明,上述克拉通在新元古代可能相邻。这些阶段性岩浆作用的演化趋势和源区特征及其所反映的地质过程与构造... 详细信息

华北克拉通和巴西圣弗朗西斯科-刚果克拉通新元古代早期的岩墙和岩床及玄武岩(ca.940~890Ma)岩浆活动时间对比和古地磁研究结果表明,上述克拉通在新元古代可能相邻。这些阶段性岩浆作用的演化趋势和源区特征及其所反映的地质过程与构造背景对进一步开展大陆重建有重要意义。本文系统总结和对比分析了两个克拉通新元古代镁铁质岩石的岩相学、地球化学和同位素年代学数据。研究发现,这些岩石大致可分为两类多期:(1)年龄较老(ca.940~920Ma)且演化的高Ti岩石(MgO2%),负Eu异常明显(Eu/Eu^(*)=0.7~1.0);(2)年龄较年轻(ca.915~890Ma)且较为原始的低Ti岩石(MgO>6.5%,TiO_(2)<2%),具有正Eu异常(Eu/Eu^(*)=1~1.2)或者没有Eu异常(Eu/Eu=1)。早期高Ti岩浆源区类似于EMⅠ型地幔端元(ε_(Nd)(t)=-8~+3),Sr-Nd同位素特征表明其可能是软流圈上涌熔融产生的岩浆与岩石圈地幔相互作用的结果;而晚期低Ti岩石Nd同位素与球粒陨石值类似(ε_(Nd)(t)=-2~+3),可能来源于软流圈地幔。这两类岩石在华北克拉通和巴西圣弗朗西斯科-刚果克拉通几乎同时出现,且可类比。岩浆演化趋势、微量元素和Sr-Nd同位素等特征及单斜辉石-熔体平衡深度计算表明,早期高Ti岩浆产生于大陆岩石圈破裂初期,经历了较高程度的结晶分异作用;而晚期低Ti岩浆的持续作用(~30Myr)可能与岩石圈破裂过程中不断增强的软流圈岩浆活动相关。该裂谷演化进程在Sr同位素特征变化上也有体现,即与早期高Ti岩石相比,晚期低Ti岩石的Sr同位素更为富集但Nd同位素保持不变,表明该类岩石的产生可能在大陆裂谷发育过程中受到海水蚀变的影响。以上证据表明,华北克拉通和巴西圣弗朗西斯科-刚果克拉通在新元古代早期具有可类比的岩石圈应力演化状态,且经历了相似的地幔地球化学动力学过程,支持两个克拉通在该时期相邻。

关键词：华北克拉通圣弗朗西斯科-刚果克拉通新元古代大火成岩省

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Liver as a new target organ in Alzheimer's disease:insight from cholesterol metabolism and its role in amyloid-beta clearance

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Neural Regeneration Research 2025年第3期20卷 695-714页

作者： Beibei Wu Yuqing Liu Hongli Li Lemei Zhu Lingfeng Zeng Zhen Zhang Weijun peng Department of Integrated Traditional Chinese&Western Medicine The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina Academician Workstation Changsha Medical UniversityChangshaHunan ProvinceChina Yangsheng College of Traditional Chinese Medicine Guizhou University of Traditional Chinese MedicineGuiyangGuizhou ProvinceChina Qinhuangdao Shanhaiguan Pharmaceutical Co. LtdQinhuangdaoHebei ProvinceChina National Clinical Research Center for Mental Disorder The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina

Alzheimer's disease,the primary cause of dementia,is characterized by neuropathologies,such as amyloid plaques,synaptic and neuronal degeneration,and neurofibrillary *** amyloid plaques are the primary characteristic of Alzheimer's disease in the central nervous system and peripheral organs,targeting amyloid-beta clearance in the central nervous system has shown limited clinical efficacy in Alzheimer's disease *** abnormalities are commonly observed in patients with Alzheimer's *** liver is the primary peripheral organ involved in amyloid-beta metabolism,playing a crucial role in the pathophysiology of Alzheimer's ***,impaired cholesterol metabolism in the liver may exacerbate the development of Alzheimer's *** this review,we explore the underlying causes of Alzheimer's disease and elucidate the role of the liver in amyloid-beta clearance and cholesterol ***,we propose that restoring normal cholesterol metabolism in the liver could represent a promising therapeutic strategy for addressing Alzheimer's disease.

关键词： ABCA1 Alzheimer's disease amyloid-beta apolipoprotein E cholesterol metabolism liver liver X receptor low-density lipoprotein receptor-related protein 1 peripheral clearance tauroursodeoxycholic acid

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