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Experimental Study of Overtopping on Sea Dikes and Coastal Flooding Under the Coupled Processes of Tides and Waves

China Ocean Engineering 2022年第3期36卷 413-426页

作者： LI Yan-ting ZENG Cheng-jie zhao yi-han HU Po SUN Tian-ting HOU yi-jun MO Dong-xue WANG Deng-ting School of Civil Engineering Tianjin UniversityTianjin 300350China State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research InstituteNanjing 210029China Water Resources Department of Jiangsu Province Nanjing 210029China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

Storm surges are cataclysmic natural disasters that occur along the coasts and are usually accompanied by large waves.The effects of coupled storm surges and waves can pose a significant threat to coastal security.Previous labo-ratory studies on the effects of storm surges and waves on coastal structures have typically utilized steady water levels and constant wave elements.An indoor simulation of the coupled processes of tides and waves is developed by adding a tide generation system to an existing laboratory wave basin to model continuous dynamic tide levels so that tide generation and wave-making occur synchronously in the pool.Specific experimental methods are given,which are applied to further study waves overtopping on artificial sea dikes and coastal flooding evolution under the coupled actions of tides and waves.The results of the overtopping discharge obtained by the test with a dynamic water level are compared with those obtained from steady water level tests and the existing empirical formula.In addition,the impacts of ecological coastal shelterbelts and structures on coastal flood processes and distributions are also investi-gated.The proposed simulation methods provide a new approach for studying the effects of storm surges and waves on coastal areas.The study also aims to provide a reference for coastal protective engineering.

关键词： storm surge water level variation wave overtopping coastal flooding experimental technique

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Lingbao Huxin Pill Alleviates Apoptosis and Inflammation at Infarct Border Zone through SIRT1-Mediated FOXO1 and NF-κB Pathways in Rat Model of Acute Myocardial Infarction

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Chinese Journal of Integrative Medicine 2022年第4期28卷 330-338页

作者： TAN Yu BIE Yu-long CHEN Li zhao yi-han SONG Lei MIAO Li-na YU Yan-qiao CHAI Hua MA Xiao-juan SHI Da-zhuo National Clinical Research Center for Chinese Medicine Cardiology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing100091China Peking University Traditional Chinese Medicine Clinical Medical School(Xiyuan Hospital) Beijing100191China Department of Graduate School Beijing University of Chinese MedicineBeijing100029China

Objective To investigate whether Lingbao Huxin Pill(LBHX)protects against acute myocardial infarction(AMI)at the infarct border zone(IBZ)of myocardial tissue by regulating apoptosis and inflammation through the sirtuin 1(SIRT1)-mediated forkhead box protein O1(FOXO1)and nuclear factor-κB(NF-κB)signaling pathways.Methods Six-week-old Wistar rats with normal diet were randomized into the sham,the model,Betaloc(0.9 mg/kg daily),LBHX-L(0.45 mg/kg daily),LBHX-M(0.9 mg/kg daily),LBHX-H(1.8 mg/kg daily),and LBHX+EX527(0.9 mg/kg daily)groups according to the method of random number table,13 in each group.In this study,left anterior descending coronary artery(LADCA)ligation was performed to induce an AMI model in rats.The myocardial infarction area was examined using a 2,3,5-triphenyltetrazolium chloride solution staining assay.A TdT-mediated dUTP nick-end labeling(TUNEL)assay was conducted to assess cardiomyocyte apoptosis in the IBZ.The histopathology of myocardial tissue at the IBZ was assessed with Heidenhain,Masson and hematoxylineosin(HE)staining assays.The expression levels of tumor necrosis factorα(TNF-α),interleukin(IL)-6,IL-1β,and intercellular adhesion molecule-1 were measured using enzyme-linked immunosorbent assays(ELISAs).The mRNA expressions of SIRT1 and FOXO1 were detected by real-time qPCR(RT-qPCR).The protein expressions of SIRT1,FOXO1,SOD2,BAX and NF-κB p65 were detected by Western blot analysis.Results The ligation of the LADCA successfully induced an AMI model.The LBHX pretreatment reduced the infarct size in the AMI rats(P<0.01).The TUNEL assay revealed that LBHX inhibited cardiomyocyte apoptosis at the IBZ.Further,the histological examination showed that the LBHX pretreatment decreased the ischemic area of myocardial tissue(P<0.05),myocardial interstitial collagen deposition(P<0.05)and inflammation at the IBZ.The ELISA results indicated that LBHX decreased the serum levels of inflammatory cytokines in the AMI rats(P<0.05 or P<0.01).Furthermore,Western blot analysis revealed that the LBHX pretreatmen

关键词： Lingbao Huxin Pill Chinese medicine infarct border zone acute myocardial infarction SIRT1

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定向重组展平竹集成材生产工艺

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林业机械与木工设备 2024年第4期52卷 4-7页

作者：赵诣涵吴新武陈亮李延军南京林业大学江苏省林业资源高效加工利用协同创新中心江苏南京210037 广西融水晨阳木业有限公司广西融水545300 浙江农林大学竹子研究院浙江杭州311300

以竹展平板为基本单元制造定向重组竹集成材的工艺方法。将竹展平板涂布间苯二酚树脂胶黏剂,涂胶量为200-300 g/m 2,按照竹青面对竹青面、竹黄面对竹黄面的方式进行组坯,热压加工制成展平竹层积材,再采用指接的方式进行接长,获得性能优... 详细信息

以竹展平板为基本单元制造定向重组竹集成材的工艺方法。将竹展平板涂布间苯二酚树脂胶黏剂,涂胶量为200-300 g/m 2,按照竹青面对竹青面、竹黄面对竹黄面的方式进行组坯,热压加工制成展平竹层积材,再采用指接的方式进行接长,获得性能优异的定向重组展平竹集成材,产品的尺寸规格一般为长1000-3500 mm,宽50-300 mm,厚60-150 mm。指接时相邻层板的指接接口需错开组坯,在常温下冷压4-5 h,冷压压力为1.0-1.5 MPa,后固化养生。

关键词：竹展平板指接材定向重组展平竹集成材生产工艺

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Well-dispersed Sb particles embedded on N-doped carbon nanofibers toward high-performance Li-ion battery

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Rare Metals 2024年第7期43卷 2994-3006页

作者： ying Li yi-han zhao Lu-Lu zhao Peng-Fei Wang ying Xie Ting-Feng yi School of Materials Science and Engineering Northeastern University Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at Qinhuangdao Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang University

The alloy-type material Sb is widely used in the anode materials of lithium-ion batteries（LIBs） due to its high theoretical specific capacity.However,its serious volume expansion problem during alloying/dealloying of Li+limits its practical application.In this work,C-Sb composite was constructed as anode material of LIBs by electrospinning route for the first time,Sb was introduced into the polyacrylonitrile-based hard carbon and coal tar pitch-based soft carbon composite amorphous carbon fiber with a diameter of 300-600 nm,which realized high cycling stability.The C-Sb-2（the mass ratio of polyacrylonitrile to Sb source is 1:2） electrode displayed charge capacities of 1098.5,930.3,841.7,753.5,643.9 and 545.8 mAh·g-1at 0.1,0.2,0.3,0.5,1 and 2 A·g-1,respectively.And when the current density returned to 0.1 A·g-1,the charge capacity was 939.3 mAh·g-1,revealing good stability and reversibility.The introduction of Sb into the amorphous carbon improved its conductivity and addressed the volume expansion issue of high specific capacity Sb during charge/discharge.Ex-situ XRD analysis confirmed the high reversibility of the C-Sb-2 during charging and discharging.Density functional theory（DFT） calculations revealed the gradual enhancement of the interface interaction between SbxLiyand amorphous carbon（AMC） with increasing lithium content,contributing to the anchoring of alloy nanoparticles on the AMC surface and buffering the volume change of the alloy.Moreover,the gradual lithiation of Sb facilitated the electron transfer from SbxLiyto AMC.These findings hold promise for designing lithium storage materials with exceptional performance,highlighting the potential of C-Sb composites as anode materials for efficient next-generation lithium storage.

关键词： Li-ion battery Metallic Sb Carbon Electrospinning Cycling stability

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Carbon efficiency modeling and optimization of solar-powered cellular networks

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Science China(Information Sciences) 2024年第5期67卷 228-243页

作者： Yuxi zhao Xiaohu GE Wen YAN Tao han yi ZHONG School of Electronic Information and Communications Huazhong University of Science and Technology Huawei Technology Co. Ltd.

As wireless communication traffic experiences rapid growth, the carbon emissions caused by the communication industry are also on the rise. To achieve “carbon neutrality”, researchers are considering the use of renewable energy sources to power cellular networks, thereby reducing carbon emissions. However, a challenge arises when using renewable energy, specifically owing to the unpredictable nature of both the energy consumption of the cellular network and the power generation from renewable sources. This inconsistency results in low renewable energy utilization and reduced carbon efficiency. Herein, we construct a carbon efficiency model of solar-powered cellular networks using practical data from solar radiation. We propose a mechanism that alternately optimizes the performance of the renewable energy network and the cellular network. This approach is based on convex optimization theory and the Dinkelback algorithm, and it leads to the design of a carbon efficiency optimization algorithm. This algorithm aims to improve the carbon efficiency of cellular networks and reduce their carbon emissions. Simulation results demonstrate that our optimization scheme yields a maximum improvement of 2.56 × 108bps/g in the carbon efficiency of the cellular network as compared to conventional power allocation schemes such as the traditional water filling method and heuristic energy sharing and charge/discharge algorithms.

关键词： cellular networks renewable energy carbon efficiency convex optimization theory dinkelbach

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From Liquid to Solid‑State Lithium Metal Batteries:Fundamental Issues and Recent Developments

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Nano-Micro Letters 2024年第2期16卷 68-125页

作者： zhao Zhang Wei‑Qiang han School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027People’s Republic of China

The widespread adoption of lithium-ion batteries has been driven by the proliferation of portable electronic devices and electric vehicles,which have increasingly stringent energy density requirements.Lithium metal batteries(LMBs),with their ultralow reduction potential and high theoretical capacity,are widely regarded as the most promising technical pathway for achieving high energy density batteries.In this review,we provide a comprehensive overview of fundamental issues related to high reactivity and migrated interfaces in LMBs.Furthermore,we propose improved strategies involving interface engineering,3D current collector design,electrolyte optimization,separator modification,application of alloyed anodes,and external field regulation to address these challenges.The utilization of solid-state electrolytes can significantly enhance the safety of LMBs and represents the only viable approach for advancing them.This review also encompasses the variation in fundamental issues and design strategies for the transition from liquid to solid electrolytes.Particularly noteworthy is that the introduction of SSEs will exacerbate differences in electrochemical and mechanical properties at the interface,leading to increased interface inhomogeneity—a critical factor contributing to failure in all-solidstate lithium metal batteries.Based on recent research works,this perspective highlights the current status of research on developing high-performance LMBs.

关键词： Lithium metal batteries All-solid-state lithium metal battery Li dendrite Solid electrolyte Interface

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基于LabVIEW的迈克耳孙干涉仪虚拟仿真平台

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大学物理 2024年第6期43卷 19-24页

作者：郑文礼崔继朝陈硕杨雨润赵仪涵王文录河北民族师范学院物理与电子工程学院河北承德067000 河北工业大学理学院天津300401 河北师范大学物理学院河北石家庄050024

本文基于LabVIEW软件开发了一个迈克耳孙干涉实验的虚拟仿真平台,可以对真实的迈克耳孙干涉实验进行模拟仿真,并允许用户进行参数调整以实时可视化仿真结果.同时,为验证虚拟仿真实验平台的准确性,分别在真实的迈克耳孙干涉仪和虚拟仿真... 详细信息

本文基于LabVIEW软件开发了一个迈克耳孙干涉实验的虚拟仿真平台,可以对真实的迈克耳孙干涉实验进行模拟仿真,并允许用户进行参数调整以实时可视化仿真结果.同时,为验证虚拟仿真实验平台的准确性,分别在真实的迈克耳孙干涉仪和虚拟仿真平台上完成测量光波波长实验,对二者实验结果进行对比分析.此外,还可采用该平台模拟探究光波波长、光波强度、空气薄膜厚度等因素与干涉条纹分布和光强分布的关系.在迈克耳孙干涉实验教学中,可以直接用该平台进行教学演示,并展示出不同条件下条纹分布的情况和光强分布的特点.该平台实现了实验与理论相结合,帮助学生学习基本光学仪器的使用方法,掌握光学实验操作规程,进而达到了提升教学效果的目标.

关键词： LabVIEW 迈克耳孙干涉实验虚拟仿真

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Latest insights into the global epidemiological features,screening,early diagnosis and prognosis prediction of esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2024年第20期30卷 2638-2656页

作者： yi-Xin zhao He-Ping zhao Meng-Yao zhao Yan Yu Xi Qi Ji-han Wang Jing Lv Department of Clinical Laboratory Honghui HospitalXi’an Jiaotong UniversityXi’an 710054Shaanxi ProvinceChina Institute of Medical Research Northwestern Polytechnical UniversityXi’an 710072Shaanxi ProvinceChina

As a highly invasive carcinoma,esophageal cancer(EC)was the eighth most prevalent malignancy and the sixth leading cause of cancer-related death worldwide in 2020.Esophageal squamous cell carcinoma(ESCC)is the major histological subtype of EC,and its incidence and mortality rates are decreasing globally.Due to the lack of specific early symptoms,ESCC patients are usually diagnosed with advanced-stage disease with a poor prognosis,and the incidence and mortality rates are still high in many countries,especially in China.Therefore,enormous challenges still exist in the management of ESCC,and novel strategies are urgently needed to further decrease the incidence and mortality rates of ESCC.Although the key molecular mechanisms underlying ESCC pathogenesis have not been fully elucidated,certain promising biomarkers are being investigated to facilitate clinical decision-making.With the advent and advancement of highthroughput technologies,such as genomics,proteomics and metabolomics,valuable biomarkers with high sensitivity,specificity and stability could be identified for ESCC.Herein,we aimed to determine the epidemiological features of ESCC in different regions of the world,especially in China,and focused on novel molecular biomarkers associated with ESCC screening,early diagnosis and prognosis prediction.

关键词： Esophageal squamous cell carcinoma Epidemiology Diagnosis Genomics Proteomics Metabolomics

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Research progress on metal-organic framework compounds(MOFs)in electrocatalysis

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Journal of Environmental Sciences 2024年第7期141卷 261-276页

作者： Yutong Guo Shunzheng zhao Xiaolong Tang Honghong yi Department of Environmental Science and Engineering School of Energy and Environmental EngineeringUniversity of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing 100083China

Metal-organic frameworks(MOFs)have favorable characteristics such as large specific surface area,high porosity,structural diversity,and pore surface modification,giving them great potential for development and attractive prospects in the research area of modern materials electrocatalysis.However,unsatisfactory catalytic activity and poor electronic conductivity are the main challenges facing MOFs.This review focuses on MOF-based materials used in electrocatalysis,based on the types of catalytic reactions that have used MOF-based materials in recent years along with their applications,and also looks at some new electrocatalytic materials and their future development prospects.

关键词： Metal-organic frame compounds Electrocatalysis Oxidation-reduction Nitrogen fixation to synthesize ammonia Carbon dioxide reduction

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Random Raman Fiber Laser as a Liquid Refractive Index Sensor

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Photonic Sensors 2024年第1期14卷 13-22页

作者： Bing han Yuxi MA han WU Yong zhao College of Information Science and Engineering Northeastern UniversityShenyang 110819China Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology Qinhuangdao 066004China College of Electronics and Information Engineering Sichuan UniversityChengdu 610064China

In this paper,a new concept of forward-pumped random Raman fiber laser(RRFL)-based liquid refractive index sensing is proposed for the first time.For liquid refractive index sensing,the flat fiber end immersed in the liquid can act as the point reflector for generating random fiber lasing and also as the sensing head.Due to the high sensitivity of the output power of the RRFL to the reflectivity provided by the point reflector in the ultralow reflectivity regime,the proposed RRFL is capable of achieving liquid refractive index sensing by measuring the random lasing output power.We theoretically investigate the effects of the operating pump power and fiber length on the refractive index sensitivity for the proposed RRFL.As a proof-of-concept demonstration,we experimentally realize high-sensitivity half-open short-cavity RRFL-based liquid refractive index sensing with the maximum sensitivity and the sensing resolution of-39.88W/RIU and 2.5075×10^(-5) RIU,respectively.We also experimentally verify that the refractive index sensitivity can be enhanced with the shorter fiber length of the RRFL.This work extends the application of the random fiber laser as a new platform for highly-sensitive refractive index sensing in chemical,biomedical,and environmental monitoring applications,etc.

关键词： Fiber optic sensors refractive index measurements fiber lasers Rayleigh scattering stimulated Raman scattering

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