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2023 Cross Strait Radio science and Wireless technology Conference, CSRSWTC 2023

作者： Dai, Hongyu Fu, Yuejue Wu, Bian Yang, Sheng Chen, Junfeng Ding, Longqiang Science and Technology on Electromagnetic Compatibility Laboratory China Ship Development and Design Center Wuhan430000 China Xidian University National Laboratory of Antenna and Microwave Technology Xi'an710071 China

ISBN: (纸本)9798350358971

L-band high-power microwave pulse compression device has the function of converting long-time low-power microwave pulses into short-time high-power microwave pulses, which has a broad application prospect in the fields of radar, nuclear fusion heating, directional weapons, and so on. This paper proposes a high-power microwave source system integration scheme based on high-power klystrons and pulse compression, and a high-power pulse compression verification system is designed and built. Compact high-power microwave pulse compression device operating in the L-band has been designed using a spherical energy storage resonant cavity and a dual-mode polarizer. While the field is established in the spherical resonant cavity, part of the energy is radiated through the coupling hole. After the cavity has stored energy, an inverse signal is input, and the radiated power of the cavity is superimposed on the reflected power to achieve power growth. © 2023 IEEE.

关键词： high-power microwave pulse source L-band Microwave pulse compressor

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Loads and Dynamic Response Characteristic on FPSO Under Internal Solitary Waves

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China Ocean Engineering 2024年第5期38卷 785-796页

作者： ZHANG Rui-rui LI Cui PU Chun-rong LIU Qian YOU Yun-xiang School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China China Resources(Nanjing)Municipal Design Co. Ltd.Nanjing 315100China State Key Laboratory of Ocean Engineering Shanghai Jiaotong UniversityShanghai 200240China

According to the established prediction model of internal solitary wave loads on FPSO in the previous work,the lumped mass model and the movement equations of finite displacement in time domain,the dynamic response model of interaction between internal solitary waves and FPSO with mooring lines were *** calculations and analysis,time histories of dynamic loads of FPSO exerted by internal solitary waves,FPSO’s motion and dynamic tension of mooring line were *** effects of the horizontal pretension of mooring line,the amplitude of internal solitary wave and layer fluid depth on dynamic response behavior of FPSO were *** was shown that the internal solitary waves had significant influence on FPSO,such as the large magnitude horizontal drift and a sudden tension *** internal solitary wave of −170 m amplitude in the ocean with upper and lower layer fluid depth ratio being 60:550,the dynamic loads reached 991.132 kN(horizontal force),18067.3 kN(vertical force)and−5042.92 kN·m(pitching moment).Maximum of FPSO’s horizontal drift was 117.56 *** increment of upstream mooring line approached 401.48 kN and that of backflow mooring line was−140 ***,the loads remained nearly constant with different pretension but increased obviously with the changing amplitude and layer fluid depth *** increments of mooring lines also changed little with the pretension but increased rapidly when amplitude and layer fluid depth ratio ***,FPSO’s motion increased quickly with not only the horizontal pretension but also the amplitude of internal solitary wave and layer fluid depth ratio.

关键词： internal solitary wave(ISW) dynamic response FPSO dynamic loads tension increment

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Comprehensive Biomechanical Characterization of the Flexible Cat Spine via Finite Element Analysis,Experimental Observations,and Morphological Insights

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Journal of Bionic Engineering 2024年第6期21卷 2877-2892页

作者： Da Lu Xueqing Wu Yangyang Xu Shijia Zhang Le Zhang Xin Huang Baoqing Pei Beijing Key Laboratory for Design and Evaluation Technology of Advanced Implantable&Interventional Medical Devices Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijing100083China Shenzhen Institute of Beihang University Shenzhen518000China

Felids,during intense activities such as jumping and sprinting,adjust their posture by twisting and stretching their body to disperse limb impact and minimize *** self-stabilization mechanism has garnered significant attention for inspiring biometric robot *** study investigates the flexibility and cushioning characteristics of a cat’s spine,focusing on its biomechanical properties.A high-fidelity 3D model was used to test the range of motion(ROM)under six conditions,simulate dorsiflexion to analyze stress *** torsional and compressive stiffness were tested by using five cat spinal *** flexibility principles of the flexible cat’s spine were explained via morphological *** indicate that the cat spine has the least rotational stiffness in axial rotation,followed by extension and lateral bending,with a compressive stiffness of 53.62±4.68 N/*** during dorsiflexion is evenly distributed across *** vertebrae heights account for 90.34%of total spinal length with a mean height-to-width ratio of ***’spines,with more articulations and elongated vertebrae,allow for significant twisting and bending,aiding in rapid body posture adjustments and impact *** biomechanical traits could inspire the design of robots for confined rescue operations.

关键词： Cat spine Biomechanical characterization Finite element analysis Morphological measurement Flexibility testing

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Branching angles in the modulation of plant architecture:Molecular mechanisms,dynamic regulation,and evolution

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Plant Communications 2025年第4期6卷 68-82页

作者： Chen Yun Wanzhuang Ma Jun Feng Lanxin Li Frontiers Science Center for Molecular Design Breeding(MOE) China Agricultural UniversityBeijingChina Beijing Key Laboratory of Development and Quality Control of Ornamental Crops Department of Ornamental HorticultureCollege of HorticultureChina Agricultural UniversityBeijingChina College of Biological Science and Technology Taiyuan Normal UniversityJinzhongChina

Plants develop branches to expand areas for assimilation and *** angles coordinate with branching types,creating diverse plant shapes that are adapted to various *** types of branching angle—the angle between shoots and the angle in relation to gravity or the gravitropic set-point angle(GSA)along shoots—determine the spacing between shoots and the shape of the aboveground plant ***,it remains unclear how these branching angles are modulated throughout shoot development and how they interact with other factors that contribute to plant *** this review,we systematically focus on the molecular mechanisms that regulate branching angles across various spe-cies,including gravitropism,anti-gravitropic offset,phototropism,and other regulatory factors,which collectively highlight comprehensive mechanisms centered on *** also discuss the dynamics of branching angles during development and their relationships with branching number,stress resistance,and crop ***,we provide an evolutionary perspective on the conserved role of auxin in the regu-lation of branching angles.

关键词： branching angles plant architecture auxin tropisms anti-gravitropic offset evolution

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Bioinspired polysaccharide-based nanocomposite membranes with robust wet mechanical properties for guided bone regeneration

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National science Review 2024年第3期11卷 215-226页

作者： Jian-Hong Xiao Zhen-Bang Zhang JiaHao Li Si-Ming Chen Huai-Ling Gao YinXiu Liao Lu Chen ZiShuo Wang YiFan Lu YuanZhen Hou HengAn Wu DuoHong Zou Shu-Hong Yu Department of Chemistry New Cornerstone Science Laboratory Institute of Biomimetic Materials&Chemistry Anhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&Chemistry Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China Department of Dental Implant Center Stomatologic Hospital and College Key Laboratory of Oral Diseases Research of Anhui Province Anhui Medical University CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern Mechanics CAS Center for Excellence in Complex System Mechanics University of Science and Technology of China Department of Oral Surgery College of Stomatology National Clinical Research Center for Oral DiseasesShanghai Key Laboratory of Stomatology Shanghai Research Institute of Stomatology Shanghai Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Institute of Innovative Materials(I2M) Department of Chemistry Department of Materials Science and Engineering Southern University of Science and Technology

Polysaccharide-based membranes with excellent mechanical properties are highly desired. However, severe mechanical deterioration under wet conditions limits their biomedical applications. Here, inspired by the structural heterogeneity of strong yet hydrated biological materials, we propose a strategy based on heterogeneous crosslink-and-hydration（HCH） of a molecule/nano dual-scale network to fabricate polysaccharide-based nanocomposites with robust wet mechanical properties. The heterogeneity lies in that the crosslink-and-hydration occurs in the molecule-network while the stress-bearing nanofiber-network remains unaffected. As one demonstration, a membrane assembled by bacterial cellulose nanofiber-network and Ca2+-crosslinked and hydrated sodium alginate molecule-network is designed. Studies show that the crosslinked-and-hydrated molecule-network restricts water invasion and boosts stress transfer of the nanofiber-network by serving as interfibrous bridge. Overall, the molecule-network makes the membrane hydrated and flexible; the nanofiber-network as stress-bearing component provides strength and *** HCH dual-scale network featuring a cooperative effect stimulates the design of advanced biomaterials applied under wet conditions such as guided bone regeneration membranes.

关键词： bioinspiration heterogeneous crosslink-and-hydration dual-scale network nanocomposite membrane wet mechanical properties guided bone regeneration

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GIRP: Energy-Efficient QoS-Oriented Microservice Resource Provisioning via Multi-Objective Multi-Task Reinforcement Learning

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IEEE Transactions on Mobile Computing 2025年第07期24卷 5793-5807页

作者： Yuan, Honggang Wang, Ting Fu, Min Shi, Yuanming East China Normal University MoE Engineering Research Center of Software/Hardware Co-design Technology and Application Shanghai Key Laboratory of Trustworthy Computing Shanghai200062 China National University of Singapore Department of Electrical and Computer Engineering 117583 Singapore ShanghaiTech University School of Information Science and Technology Shanghai201210 China

Microservice architecture has revolutionized web service development by facilitating loosely coupled and independently developable components distributed as containers or virtual machines. While existing studies emphasize end-to-end latency, this paper investigates energy-efficient quality-of-service (QoS)-oriented microservice provisioning, focusing on both QoS satisfaction and power consumption (PC) conservation. We propose the Green and Intelligent Resource Provision (GIRP) architecture, integrating a data-driven energy-latency-aware resource allocation and scheduling manager to balance latency and PC. To reconcile the trade-offs involved, a dual-objective optimization problem is formulated to minimize latency and energy use by selecting proper servers, allocating CPU cores, and determining service replicas. To address challenges with discrete variables, dual objectives, and implicit mappings, we leverage a model-free deep deterministic policy gradient-based reinforcement learning algorithm. Specifically, we develop a multi-task agent via the Multi-gate Mixture-of-Experts model to simultaneously make two separate actions regarding CPU core numbers and service replica numbers, followed by a single-task agent to determine service scheduling. Extensive experiments on the DeathStarBenchmark testbed validate GIRP's effectiveness, demonstrating approximately 52% resource savings and a 43% reduction in PC compared to leading methods like Sinan, Firm, and heuristic-based algorithms. These results highlight GIRP's capability to optimize microservice orchestration by balancing end-to-end latency and power efficiency. © 2025 IEEE. All rights reserved.

关键词： Quality of service

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Insights into the interplay between gut microbiota and lipid metabolism in the obesity management of canines and felines

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Journal of Animal science and Biotechnology 2024年第5期15卷 1761-1777页

作者： Kaiqi Li Xiangyu Xiao Yuling Li Sichen Lu Jianghang Zi Xiaoqiang Sun Jia Xu Hao‑Yu Liu Xiaoqiong Li Tongxing Song Demin Cai Laboratory of Animal Physiology and Molecular Nutrition Jiangsu Key Laboratory of Animal Genetic Breeding and Molecular DesignCollege of Animal Science and TechnologyYangzhou UniversityYangzhou 225009China College of Animal Science and Technology Huazhong Agricultural UniversityWuhan 430070China School of Life Science and Engineering Foshan UniversityFoshan 528231China State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro‑Products Institute of Food ScienceZhejiang Academy of Agricultural SciencesHangzhouZhejiang 310021People’s Republic of China College of Agriculture Jinhua PolytechnicJinhua 321017China

Obesity is a prevalent chronic disease that has significant negative impacts on humans and our companion animals,including dogs and *** occurs with multiple comorbidities,such as diabetes,hypertension,heart disease and osteoarthritis in dogs and cats.A direct link between lipid metabolism dysregulation and obesity-associated diseases has been ***,the understanding of such pathophysiology in companion animals is *** review aims to address the role of lipid metabolism in various metabolic disorders associated with obesity,emphasizing the involvement of the gut ***,we also discuss the management of obesity,including approaches like nutritional interventions,thus providing novel insights into obesity prevention and treatment for canines and felines.

关键词： Cat Dog Gut microbiota Lipid metabolism Obesity Management

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Two-dimensional Sb cluster superlattice on Si substrate fabricated by a two-step method

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Chinese Physics B 2022年第8期31卷 160-164页

作者： Runxiao Zhang Zi Liu Xin Hu Kun Xie Xinyue Li Yumin Xia Shengyong Qin CAS Key Laboratory of Strongly Coupled Quantum Matter Physics Department of PhysicsUniversity of Science and Technology of ChinaHefei 230026China International Center for Quantum Design of Functional Materials(ICQD University of Science and Technology of ChinaHefei 230026China

Nanoclusters consisting of a few atoms have attracted a lot of research interests due to their exotic size-dependent properties. Here, well-ordered two-dimensional Sb cluster superlattice was fabricated on Si substrate by a two-step method and characterized by scanning tunneling microscopy. High resolution scanning tunneling microscope measurements revealed the fine structures of the Sb clusters, which consist of several Sb atoms ranging from 2 to 7. Furthermore, the electronic structure of the nanocluster displays the quantized energy-level which is due to the single-electron tunneling effects. We believe that the fabrication of Sb cluster superlattice broadens the species of the cluster superlattice and provides a promising candidate to further explore the novel physical and chemical properties of the semimetal nanocluster.

关键词： microstructure nanoparticles cluster superlattice scanning tunneling microscope

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Recent advances in regulating the local environment of M-N_(4) structure for tailored chemical reactions

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Nano Research 2023年第7期16卷 8596-8613页

作者： Lan Wang Honglei Chen Yi Wang Xiaokang Liu Changli Li Jingfu He Tao Yao School of Materials Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Reactor Operation and Application Research Sub-Institute Nuclear Power Institute of ChinaChengdu 610041China

Single-atom catalysts(SACs)with M-N_(4)structure have drawn significant attention due to the facile preparation,maximum atom efficiency,unique electronic properties,uniform active sites,and excellent *** catalysts integrated the merits of traditional homogeneous and heterogeneous catalysts effectively solve the cost,activity,and reuse *** importantly,the M-N_(4)structure is flexible and other species like atoms,groups,and particles can be added to precisely control the local environment of M-N_(4)to further improve the catalytic *** unprecedented progress has been made,it remains difficulties in the rational design and controllable synthesis of a suitable SAC for a certain *** review introduces the progress of M-N_(4)catalysts and summarizes the strategies to modulate the M-N_(4)structure,including changing the coordination number,tailoring the coordination structure,coordinating with groups,creating dual-atom catalysts(DACs),and coexisting of SAC with DAC and *** emphasis is placed on the preparation,structure characterization,and reaction mechanism of M-N_(4)-derived ***,the current challenges of these catalysts are also discussed to provide guidelines for the future design of efficient catalysts.

关键词： M-N_(4)single-atom catalyst dual single-atom catalyst local environment structure-activity relationship

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Soil microbial necromass carbon in forests:A global synthesis of patterns and controlling factors

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Soil Ecology Letters 2024年第4期6卷 203-215页

作者： Shan Xu Xiaoyu Song Hui Zeng Junjian Wang State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China School of Urban Planning and Design Shenzhen Graduate SchoolPeking UniversityShenzhen 518055China

Boreal and temperate forests had higher MNC and FNC/BNC than other forest *** forests had higher MNC and lower FNC/BNC than other forest *** dependence of MNC on forest type varied among forest *** and soil total N were the important factors on MNC and MNC/***,soil pH,and clay content were identified as direct factors on FNC/*** microbial necromass carbon(MNC)is an important contributor to soil organic carbon(SOC)and plays a vital role in carbon sequestration and climate change ***,it remains unclear whether the content,contribution to SOC(MNC/SOC),and fungal-to-bacterial necromass carbon ratio(FNC/BNC)of MNC vary across forest biomes and *** summarizing data from 1704 points across 93 forest sites,we explored the spatial patterns of MNC,MNC/SOC,and FNC/BNC in the surface layer of 0–20 cm of forest soils,as well as the controlling factors ***,boreal and temperate forests had higher MNC and FNC/BNC values than tropical,subtropical,and Mediterranean forests,whereas both boreal and Mediterranean forests had low MNC/SOC *** forests had higher MNC and lower FNC/BNC than broadleaved and coniferous forests,whereas MNC/SOC was higher in broad-leaved forests than that in coniferous ***,the dependence of MNC on forest type also varies among forest *** analyses identified soil total N as one of the most important factors affecting MNC and MNC/SOC;whereas MAT,soil pH,and clay content were identified as the important factors affecting FNC/*** synthesis is critical for managing soil MNC to mitigate climate change in forests.

关键词： soil microbial necromass carbon MNC/SOC forest biome forest type climate soil properties

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