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NOMA Empowered Energy Efficient Data Collection and Wireless Power Transfer in Space-Air-Ground Integrated Networks

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China Communications 2023年第8期20卷 17-31页

作者： Cong Zhou Shuo Shi chenyu Wu Zhenyu Xu School of Electronic and Information Engineering Harbin Institute of TechnologyHarbin 150001China Peng Cheng Laboratory Shenzhen 518055China Department of Intelligent Engineering Huizhou Engineering Vocational CollegeHuizhou 516023China

As the sixth generation network(6G)emerges,the Internet of remote things(IoRT)has become a critical ***,conventional terrestrial networks cannot meet the delay-sensitive data collection needs of IoRT networks,and the Space-Air-Ground integrated network(SAGIN)holds *** propose a novel setup that integrates non-orthogonal multiple access(NOMA)and wireless power transfer(WPT)to collect latency-sensitive data from IoRT *** extend the lifetime of devices,we aim to minimize the maximum energy consumption among all IoRT *** to the coupling between variables,the resulting problem is *** first decouple the variables and split the original problem into four ***,we propose an iterative algorithm to solve the corresponding subproblems based on successive convex approximation(SCA)techniques and slack ***,simulation results show that the NOMA strategy has a tremendous advantage over the OMA scheme in terms of network lifetime and energy efficiency,providing valuable insights.

关键词： NOMA Space-Air-Ground Integrated Networks data collection wireless power transfer resource allocation trajectory optimization

Synergetic Improvement of Interlaminar Fracture Toughness in Carbon Fiber/Epoxy Composites Interleaved with PES/PEK‑C Hybrid Nanofiber Veils

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Advanced Fiber Materials 2022年第5期4卷 1081-1093页

作者： Jinli Zhou chenyu Zhang Chao Cheng Ming wang Zhihui Yang Yanfei Yang Hongying Yang Muhuo Yu Zhongyuan University of Technology Zhengzhou 450000China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua UniversityShanghai 201620China Shanghai University of Engineering Science Shanghai 201620China Henan University of Engineering Zhengzhou 450000China

In this study,two types of soluble thermoplastic resins were added to epoxy resin at a fixed weight ratio to prepare a three-phase cast *** cast was then manufactured into hybrid nanofiber as interleaves for interlaminar toughening of carbon fiber/epoxy resin(CF/EP)composites using a co-solvent *** results revealed that when the hybrid components reached 15 wt%,Polyethersulfone(PES)and polyaryletherketone cardo(PEK-C)exhibited the best synergistic toughening effect,and the fracture toughness increased by 99.8%and 39.8%,respectively,compared with the reference or the same proportion of the single PES toughened *** used PES/PEK-C hybrid nanofibers with an areal density of 19.2 g per square meter(gsm)as composite toughening *** from the lack of significant influence of PES nanofiber on CF/EP composites,the interlaminar fracture toughness of mode I and mode II layers increased by 88.3%and 46.9%,respectively,compared to the reference *** Electron Microscopy of the fracture surface and cross-section micromorphology of the laminate displayed that the thermoplastic microspheres of different sizes contribute differently to crack resistance:PEK-C consumes more energy due to the debonding and extraction of microspheres and resin,whereas the presence of the PES phase can induce more plastic deformation and crack deflection.

关键词： Carbon fiber/epoxy resin Polyethersulfone Polyaryletherketone cardo Interlaminar fracture toughness Nanofiber

Evolution and spatiotemporal analysis of earthquake public opinion based on social media data

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Earthquake Science 2024年第5期37卷 387-406页

作者： chenyu wang Yanjun Ye Yingqiao Qiu Chen Li Meiqing Du School of Earth Science and Engineering Hebei University of EngineeringHandan 056038China China Coal Geology Group Co.LTD Beijing 100040China Key Laboratory of Agricultural Water Resources Hebei Key Laboratory of Water-Saving AgricultureCenter for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyCASShijiazhuang 050021China University of Chinese Academy of Sciences Beijing 100049China Shandong Zhengyuan Digital City Construction Co. Ltd.Yantai 264670China Yantai Smart City and Internet of Facilities Engineering Research Center Yantai 264670China

As critical conduits for the dissemination of online public opinion,social media platforms offer a timely and effective means for managing emergencies during major disasters,such as *** study focuses on the analysis of online public opinions following the Maduo M7.4 earthquake in Qinghai Province and the Yangbi M6.4 earthquake in Yunnan *** collecting,cleaning,and organizing post-earthquake Sina Weibo(short for Weibo)data,we employed the Latent Dirichlet Allocation(LDA)model to extract information pertinent to public opinion on these *** analysis included a comparison of the nature and temporal evolution of online public opinions related to both *** emotion analysis,utilizing an emotion dictionary,categorized the emotional content of post-earthquake Weibo posts,facilitating a comparative study of the characteristics and temporal trends of online public emotions following the *** findings were visualized using Geographic Information System(GIS)*** analysis revealed certain commonalities in online public opinion following both ***,the peak of online engagement occurred within the first 24 hours post-earthquake,with a rapid decline observed between 24 to 48 hours *** variation in popularity of online public opinion was linked to aftershock *** for population factors,online engagement in areas surrounding the earthquake sites and in Sichuan Province was significantly *** dominated by feelings of“fear”and“surprise”,the public sentiment shifted towards a more positive outlook with the onset of rescue ***,distinctions in the online public response to each earthquake were also *** the Yangbi earthquake,Yunnan Province reported the highest number of Weibo posts nationwide;in contrast,Qinghai Province ranked third post-Maduo earthquake,attributable to its smaller population size and extensive damage to communication ***

关键词： internet public opinion topic clustering emotional analysis psychological crisis intervention

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功率增强型光声光谱气体传感技术的研究进展

中国激光 2018年第9期45卷 100-112页

作者：王强许可姚晨雨王震常军任伟香港中文大学机械与自动化工程学系香港沙田999077 山东大学信息科学与工程学院山东济南250100

光声光谱(PAS)技术是痕量气体传感领域内十分重要的探测技术,科研人员正致力于提升光声光谱气体传感技术的性能,以满足不同的应用需求,其中通过增强激发光功率来提升探测灵敏度是当前行业内的研究热点,并已取得了许多突破性进展。介绍... 详细信息

光声光谱(PAS)技术是痕量气体传感领域内十分重要的探测技术,科研人员正致力于提升光声光谱气体传感技术的性能,以满足不同的应用需求,其中通过增强激发光功率来提升探测灵敏度是当前行业内的研究热点,并已取得了许多突破性进展。介绍了这一重要领域的研究现状,总结了各类技术手段的工作原理、技术特点以及最新研究成果,并对其发展趋势进行了分析。

关键词：光谱学光声光谱功率增强气体传感

A Malvaceae-specific miRNA targeting the newly duplicated GaZIP1L to regulate Zn^(2+)ion transporter capacity in cotton ovules

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Science China(Life Sciences) 2021年第3期64卷 339-351页

作者： Xingpeng Wen Gai Huang chenyu Li Yuxian Zhu Institute for Advanced Studies Wuhan UniversityWuhan 430072China State Key Laboratory of Protein and Plant Gene Research School of Life SciencesPeking UniversityBeijing 100871China

MicroRNAs(miRNAs)play critical roles in regulating gene expression in plants,yet their functions underlying cultivated diploid Gossypium arboreum cotton ovule development are largely ***,we acquired small RNA profiles from *** ovules and fibers collected at different growth stages,and identified 46 novel miRNAs that accounted for 23.7%of all miRNAs in *** reported in the latest plant sRNA *** analysis of 84(including 38 conserved)differentially expressed *** miRNAs,we detected 215 putative protein-coding genes in 26 biological processes as their potential targets.A Malvaceae-specific novel miRNA named gar-miRN44 was found to likely regulate cotton ovule growth by targeting to a newly duplicated Zn^(2+)ion transporter gene *** cotton ovule development,gar-miRN44 transcript level decreased sharply after 10 to 15 days post-anthesis(DPA),while that of the GaZIP1L increased significantly,with a concomitant increase of Zn^(2+)ion concentration in late ovule developmental *** dynamics simulation and ion absorption analysis showed that GaZIP1L has stronger Zn2+ion binding ability than the original GaZIP1,indicating that the newly evolved GaZIP1L may be more suitable for maintaining high Zn2+ion transport capacity that is likely required for cotton ovule growth via enhanced cellulose synthase *** systematic miRNA profiling in *** and characterization of gar-miRN44 not only contribute to the understanding of miRNA function in cotton,but also provide potential targets for plant breeding.

关键词： gar-miRN44 Malvaceae GaZIP1L Zn^(2+)ion transport cotton ovule development

Dynamic rupture of metal sheet subjected to laser irradiation and tangential subsonic airflow

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Theoretical & Applied Mechanics Letters 2018年第4期8卷 272-276,300页

作者： Xiaodong Xing Te Ma Ruixing wang chenyu Cao Hongwei Song Chenguang Huang Harbin Engineering University Harbin 150000China Key Laboratory for Mechanics in Fluid-Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China

To reproduce the premature rupture process of metal sheet subjected to laser irradiation with subsonic airflow,which is an interesting phenomenon observed in the experiments given by Lawrence Livermore National Laboratory,a coupled numerical model considering the interaction and evolution of metal elastoplastic deformation and aerodynamic pressure profile is *** the thermal elastoplastic constitutive relationship and failure criterion,the simulated failure modes and dynamic rupture process are basically consistent with the experimental results,indicating plastic flow and multiple fracturing is the main failure *** with the case of non-airflow,subsonic airflow not only accelerates deformation,but also turns the bugle deformation,plastic strain and rupture mode into asymmetric.

关键词： Thermal-fluid-structure coupling Thermal elastoplastic Aerodynamic pressure Laser damage Dynamic rupture

Small molecules in targeted cancer therapy:advances,challenges,and future perspectives

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Signal Transduction and Targeted Therapy 2021年第6期6卷 1732-1779页

作者： Lei Zhong Yueshan Li Liang Xiong Wenjing wang Ming Wu Ting Yuan Wei Yang chenyu Tian Zhuang Miao Tianqi wang Shengyong Yang State Key Laboratory of Biotherapy and Cancer Center West China HospitalSichuan UniversityChengduSichuanPeople's Republic of China Personalized Drug Therapy Key Laboratory of Sichuan Province Department of PharmacySichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengduSichuanPeople’s Republic of China

Due to the advantages in efficacy and safety compared with traditional chemotherapy drugs,targeted therapeutic drugs have become mainstream cancer *** the first tyrosine kinase inhibitor imatinib was approved to enter the market by the US Food and Drug Administration(FDA)in 2001,an increasing number of small-molecule targeted drugs have been developed for the treatment of *** December 2020,89 small-molecule targeted antitumor drugs have been approved by the US FDA and the National Medical Products Administration(NMPA)of *** great progress,small-molecule targeted anti-cancer drugs still face many challenges,such as a low response rate and drug *** better promote the development of targeted anti-cancer drugs,we conducted a comprehensive review of small-molecule targeted anti-cancer drugs according to the target *** present all the approved drugs as well as important drug candidates in clinical trials for each target,discuss the current challenges,and provide insights and perspectives for the research and development of anti-cancer drugs.

关键词： drugs chemotherapy treatment

Application of Novel Design Bone Grafting for Treatment of Segmental Acetabular Rim Defects During Revision Total Hip Arthroplasty

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Journal of Bionic Engineering 2021年第6期18卷 1369-1377页

作者： Xin Zhao Haowen Xue Yang Sun Aobo Zhang Yang Liu Hao Chen Qian Wan Jiangbo Zhang Jianlin Xiao chenyu wang Qing Han Jincheng wang Orthopaedic Medical Center The 2nd Hospital of Jilin UniversityChangchun130041China Department of Orthopaedics China-Japan Union Hospital of Jilin UniversityChangchun130033China Department of Plastic and Reconstructive Surgery First Bethune Hospital of Jilin UniversityChangchun130021China

The study aimed to develop efficient techniques with different novel graft structures to enhance the treatment of acetabular bone *** inhomogeneous material properties Finite Element Analysis(FEA)model was reconstructed according to computed tomography images based on a healthy patient without any peri-acetabular bony defect according to the American Academy of Orthopedic Surgeons(AAOS).The FEA model of acetabular bone deficiency was performed to simulate and evaluate the mechanical performances of the grafts in different geometric structures,with the use of fixation implants(screws),along with the stress distribution and the relative micromotion of graft *** stress distribution mainly concentrated on the region of contact of the screws and superolateral *** the different structures,the mortise-tenone structure provided better relative micromotion,with suitable biomechanical property even without the use of *** novel grafting structures could provide sufficient biomechanical stability and bone remodeling,and the mortise-tenone structure is the optimal treatment option for acetabulum reconstruction.

关键词： Segmental defects of the acetabular rim Bone grafting Finite element analysis method Structure optimization Revision total hip arthroplasty

RuO_(2)/TiO_(2)/MXene with multi-heterojunctions coating on carbon cloth for high-activity chlorine evolution reaction at large current densities

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Nano Research 2024年第6期17卷 4764-4772页

作者： Yuhao Duan Liuxu Wei chenyu Cai Junbao Mi Fuyuan Cao Jiaze Chen Xiaolong Li Xiujiang Pang Bin Li Lei wang Key Laboratory of Eco-chemical Engineering Ministry of EducationInternational Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China College of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdao 266042China

The chlorine evolution reaction(CER)is a crucial step in the production of chlorine gas and active chlorine by chlor-alkali ***,the endeavor to fabricate electrodes capable of yielding high current density at minimal overpotential remains a central challenge in advancing the realm of chlorine evolution ***,we grow TiO_(2)and RuO_(2)on MXene@carbon cloth(CC)through the favorable affinity and induced deposition effect between the surface functional groups of MXene and the metal.A self-supported electrode(RuTiO_(2)/MXene@CC)with strong binding at the electrocatalyst-support interface and weak adhesion at electrocatalyst-bubble interface is *** RuTiO_(2)/MXene@CC can reduce the electron density of RuO_(2)by regulating the electron redistribution at the heterogeneous interface,thus enhancing the adsorption of Cl−.RuTiO_(2)/MXene@CC could achieve a high current density of 1000 mA·cm^(−2)at a small overpotential of 220 mV,superior to commercial dimensionally stable anodes(DSA).This study provides a new strategy for constructing efficient CER catalysts at high current density.

关键词： chlorine evolution reaction high current density MXene TiO_(2) RuO_(2)