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Signal Transduction and Targeted Therapy 2024年第1期9卷 51-54页

作者： Leili Jia Haihua luo Lizhong Li Mingyao Wang Jiangfeng Liu Yuan Liang Shan Li Yong Jiang Juntao Yang hongbin Song Institute for Disease Control and Prevention of PLA BeijingChina Guangdong Provincial Key Laboratory of Proteomics State Key Laboratory of Organ Failure ResearchSchool of Basic Medical SciencesSouthern Medical UniversityGuangzhou 510515China State Key Laboratory of Common Mechanism Research for Major Diseases Institute of Basic Medical SciencesChinese Academy of Medical Science and Peking Union Medical College100005 BeijingChina

Dear Editor,Infections by the influenza virus are a significant and widespread global health threat,as these infections have an annual death toll ranging from 290,000 to 650,000.1 A significant proportion of these fatalities are attributed to secondary bacterial pneumonia,a severe complication commonly caused by ubiquitous respiratory pathogens such as Staphylococcus aureus(S.aureus).2 Of particular concern is the increased morbidity and mortality rates in individuals infected simultaneously with influenza virus and methicillin-resistant S.aureus(MRSA).3 The concurrent presence of bacteria and influenza virus usually causes acute respiratory distress syndrome(ARDS),which is associated with acute lung injury(ALI),severe lung tissue edema,and widespread inflammation.Nevertheless,determining the complex mechanisms underlying the synergistic interplay will require further investigation with a suitable coinfection mouse model.In our previous study,we utilized different sequential coinfections at various time points to model influenza A virus and MRSA coinfection.

关键词： influenza pneumonia lung

Age-Constrained Dynamic Content Replacing and Delivering for UAV-Assisted Context Awareness

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China Communications 2022年第7期19卷 277-293页

作者： Liudi Wang Shan Zhang Xishuo Li hongbin luo School of Computer Science and Engineering Beihang UniversityBeijing 100876China

In this work,we employ the cache-enabled UAV to provide context information delivery to end devices that make timely and intelligent decisions.Different from the traditional network traffic,context information varies with time and brings in the ageconstrained requirement.The cached content items should be refreshed timely based on the age status to guarantee the freshness of user-received contents,which however consumes additional transmission resources.The traditional cache methods separate the caching and the transmitting,which are not suitable for the dynamic context information.We jointly design the cache replacing and content delivery based on both the user requests and the content dynamics to maximize the offloaded traffic from the ground network.The problem is formulated based on the Markov Decision Process(MDP).A sufficient condition of cache replacing is found in closed form,whereby a dynamic cache replacing and content delivery scheme is proposed based on the Deep Q-Network(DQN).Extensive simulations have been conducted.Compared with the conventional popularity-based and the modified Least Frequently Used(i.e.,LFU-dynamic)schemes,the UAV can offload around 30%traffic from the ground network by utilizing the proposed scheme in the urban scenario,according to the simulation results.

关键词： UAV offloading context awareness onboard caching cache replacing content freshness

Irrigation and nitrogen fertiliser optimisation in protected vegetable fields of northern China:Achieving environmental and agronomic sustainability

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Journal of Integrative Agriculture 2024年第3期23卷 1022-1033页

作者： Bingqian Fan Yitao Zhang Owen Fenton Karen Daly Jungai Li Hongyuan Wang Limei Zhai Xiaosheng luo Qiuliang Lei Shuxia Wu hongbin Liu State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Nonpoint Source Pollution Control Ministry of Agriculture and Rural Affairs/lnstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Teagasc Environmental Research CentreWexford Y35Ireland Institute of Plant Nutrition Resources and Environmental SciencesHenan Academy of Agricultural SciencesZhengzhou 450002China

Globally,sub-optimal use of nitrogen (N) fertiliser and elevated N irrigation groundwater have led to high leached nitrate (NO_(3)^(–)) losses from protected vegetable field systems.Optimising fertiliser and irrigation management in different soil types is crucial to reduce future N loads from such systems.The present 4-year study examined leached N loads from lysimeter monitoring arrays set up across 18 protected vegetable system sites encompassing the dominant soil types of northern China.The treatments applied at each field site were:1) a high N and high irrigation input treatment (HNHI);2) a low N but high irrigation input treatment (LNHI) and 3) a low N with low irrigation input treatment (LNLI).Results showed that the mean annual leached total nitrogen loads from the HNHI,LNHI and LNLI treatments were 325,294 and 257 kg N ha^(–1) in the fluvo-aquic soil,114,100 and 78 kg N ha^(–1) in the cinnamon soil and 79,68 and 57 kg N ha^(–1) in the black soil,respectively.The N dissolved in irrigation water in the fluvo-aquic soil areas was 8.26-fold higher than in the cinnamon areas.A structural equation model showed that N fertiliser inputs and leaching water amounts explained 14.7 and 81.8%of the variation of leached N loads,respectively.Correspondingly,reducing irrigation water by 21.5%decreased leached N loads by 20.9%,while reducing manure N and chemical N inputs by 22 and 25%decreased leached N loads by only 9.5%. This study highlights that protected vegetable fields dominated by fluvo-aquic soil need management to curtail leached N losses in northern China.

关键词： agriculture water quality nitrate groundwater irrigation management

Degree-Based Probabilistic Caching in Content-Centric Networking

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China Communications 2017年第3期14卷 158-168页

作者： Meng Zhang Jianqiang Tang Ying Rao hongbin luo Hongke Zhang School of Electronics and Information Engineering Beijing Jiaotong University Beijing China

Content-Centric Networking is a novel future network architecture that attracts increasing research interests in recent years. In-network caching has been regarded as a prominent feature of Content-Centric Networking since it is able to reduce the network traffic, alleviate the server bottleneck and decrease the user access latency. However, the CCN default caching scheme results in a high caching redundancy, causing an urgent need for an efficient caching scheme. To address this issue, we propose a novel implicit cooperative caching scheme to efficiently reduce the caching redundancy and improve the cache resources utilization. The simulation results show that our design achieves a higher hit ratio and a shorter cache hit distance in comparison with the other typical caching schemes.

关键词：网络缓存网络架构概率资源利用率网络流量访问延迟缓存机制合作缓存

Effect of nozzle inlet parameters on the dry granulation atomization process of Si_(3)N_(4) ceramic bearing balls

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第6期12卷 182-205页

作者： Dongling Yu Xiaohui Zhang hongbin luo Dahai Liao Nanxing Wu School of Mechanical and Electronic Engineering Jingdezhen Ceramic Institute Jingdezhen 333403 P.R.China

In this paper,the atomization characteristics of Si3N4 ceramic dry granulation affect the performance of Si3N4 ceramic bearing balls.In order to improve the dry granulation characteristics and the comprehensive performance of Si3N4 ceramic bearing balls,the atomization mechanism of the spinning nozzle used for Si3N4 dry granulation was studied in detail.The interaction between air and binder in the pressure-swirl nozzle is analyzed based on VOF method,the modified realizable k−εturbulence model is used to simulate the flow field inside and outside the pressure-swirl nozzle,the effects of nozzle inlet parameters including the number of tangential inlets and the deflection angle of tangential inlets on the binder volume fraction,velocity distribution and pressure distribution are analyzed.The results show that when the number of tangential inlets increases from 1 to 4,the swirl strength of gas–liquid two-phase in the nozzle increases,the mean diameter of air core increases from 1.51 mm to 2.01 mm,and the spray cone angle increases from 18.5◦to 26.4◦.Besides,when the deflection angle of tangential inlet increases from 0◦to 15◦,the swirl strength of gas–liquid two-phase in the nozzle with the deflection angle of tangential inlet of 10◦is the largest,and the mean diameter of air core and spray cone angle is 3.04 mm and 30.7◦,respectively.Based on the atomization experiment platform of the electric control fuel system,the mean diameter of air core and spray cone angle are measured,the micromorphology of Si3N4 particles is observed,which verifies the correctness of numerical simulation.When the Si3N4 particles are prepared by dry granulation,taking the atomization performance of nozzle into consideration,the pressure-swirl nozzle with 4 tangential inlets and 10◦deflection angle should be selected.

关键词： Si_(3)N_(4)ceramic bearing balls pressure-swirl nozzle VOF method inlet parameters air core spray cone angle

金属氯化物固态电解质及其全固态电池研究现状与展望

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储能科学与技术 2024年第1期13卷 193-211页

作者：李枫程晓斌罗锦达姚宏斌中国科学技术大学合肥微尺度物质科学国家研究中心中国科学技术大学化学与材料科学学院安徽合肥230026

基于无机固态电解质体系的全固态电池,具有高能量密度、长循环寿命和高安全性等特点,被认为是下一代电化学储能电池中备受期待的候选体系。实现高性能全固态电池的关键在于设计和制备具有高离子电导率、界面稳定且易形变的固态电解质材... 详细信息

基于无机固态电解质体系的全固态电池,具有高能量密度、长循环寿命和高安全性等特点,被认为是下一代电化学储能电池中备受期待的候选体系。实现高性能全固态电池的关键在于设计和制备具有高离子电导率、界面稳定且易形变的固态电解质材料。金属氯化物型固态电解质作为一种新兴的材料体系,同时具备氧化物固态电解质的抗氧化性以及硫化物固态电解质的高离子传导率和机械延展性,且制备过程简单,无须严苛的环境和极高的烧结温度,可规模化生产潜力大,正逐渐成为实现全固态电池商业化的技术路线竞争者之一。本文通过对近五年来相关电解质材料研究进展的深入分析,对金属氯化物固态电解质体系的研究现状进行了系统评述,涵盖了其合成方法学、晶体结构学、离子传导机制、性能优化策略、电极-电解质界面兼容性以及实用化可行性分析等多个方面。同时,展望了金属氯化物固态电解质未来可能的发展方向,为基于金属氯化物的高性能全固态电池的研究提供了理论和实验参考。

关键词：金属氯化物固态电解质离子传导机制全固态电池

Service Function Chain in Small Satellite-Based Software Defined Satellite Networks

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China Communications 2018年第3期15卷 157-167页

作者： Taixin Li Huachun Zhou hongbin luo Qi Xu Si Hua Bohao Feng Beijing Jiaotong University Beijing 100044 China Beihang University Beijing 100191 China

Software Defined Satellite Networks(SDSN) are proposed to solve the problems in traditional satellite networks, such as time-consuming configuration and inflexible traffic scheduling. The emerging application of small satellite and research of SDSN make it possible for satellite networks to provide flexible network services. Service Function Chain(SFC) can satisfy this need. In this paper, we are motivated to investigate applying SFC in the small satellite-based SDSN for service delivery. We introduce the structure of the multi-layer constellation-based SDSN. Then, we describe two deployment patterns of SFC in SDSN, the Multi-Domain(MD) pattern and the Satellite Formation(SF) pattern. We propose two algorithms, SFP-MD, and SFP-SF, to calculate the Service Function Path(SFP). We implement the algorithms and conduct contrast experiments in our prototype. Finally, we summarize the applicable conditions of two deployment patterns according to the experimental results in terms of hops, delay, and packet loss rate.

关键词：卫星网络网络服务软件定义函数链应用程序服务功能对比实验损失评价

基于机载多基线PolInSAR的森林冠层高度反演

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测绘地理信息 2024年第2期49卷 74-80页

作者：罗洪斌朱泊东岳彩荣王宁西南林业大学林学院云南昆明650224

以美国航空航天局(National Aeronautics and Space Administration,NASA)、欧洲航天局(European Space Agency,ESA)、加蓬航天局合作的AfriSAR项目中的Lopenp和Mondah为实验区,以L波段的多基线全极化无人驾驶飞行器合成孔径雷达(unmanned aerial vehicle synthetic aperture radar,UAVSAR)数据为数据源,分别采用高度偏差(height variance,VAR)方法、偏心率(eccentricity,ECC)方法和平均相干幅度与分离度乘积(product of average coherence magnitude and separation,PROD)方法、原点到拟合直线距离与分离度乘积(product of fitted line distance from origin and coherence separation,LINE)方法进行基线选择,并基于地面随机体散射模型(random volume on ground,RVoG)三阶段方法反演森林高度,以激光雷达获取的相对高度RH100对两个实验区的森林冠层高度反演结果进行验证。结果表明:在植被高度较小时,利用4种基线选择方法反演的森林冠层高度均比较合理,但森林高度较大时,ECC和VAR方法的低估较为严重;在Lopenp实验区中,采用VAR方法选择基线时,总体反演精度最低,R^(2)和均方根误差(root mean square error,RMSE)分别为0.36、26.27 m;采用ECC方法选择基线时,总体反演精度优于VAR方法,R^(2)和RMSE分别为0.50、13.94m;LINE方法的R^(2)和RMSE分别为0.72、8.71 m,PROD方法的R^(2)和RMSE分别为0.72、8.55 m。4种基线选择方法中,PROD和LINE方法的总体反演精度明显优于ECC和VAR方法。Mondah实验区结果的规律与Lopenp实验区的一致,说明利用多基线极化合成孔径雷达干涉测量(polarimetric interferometric synthetic aperture radar,PolInSAR)技术反演森林冠层高度时,基线选择方法对反演结果有重要影响。

关键词：多基线极化合成孔径雷达干涉测量技术基线选择冠层高度

多源量测环境下计及时延融合的配电网区间状态估计

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电力系统自动化 2024年第12期48卷 120-129页

作者：李诗伟骆晨何叶吴红斌丁明华玉婷新能源利用与节能安徽省重点实验室(合肥工业大学) 安徽省合肥市230009 国网安徽省电力有限公司电力科学研究院安徽省合肥市230601 合肥综合性国家科学中心能源研究院(安徽省能源实验室) 安徽省合肥市230031

配电网运行的不确定性和量测误差的未知但有界性使得精准感知系统状态难以实现。为此,文中考虑多源量测环境提出了一种计及时延融合的配电网区间状态估计方法。首先,扩展微型同步相量测量装置的量测范围,增加高精度量测冗余,提出多源量... 详细信息

配电网运行的不确定性和量测误差的未知但有界性使得精准感知系统状态难以实现。为此,文中考虑多源量测环境提出了一种计及时延融合的配电网区间状态估计方法。首先,扩展微型同步相量测量装置的量测范围,增加高精度量测冗余,提出多源量测数据融合策略实现量测数据在采样时刻上的同步。其次,基于区间数建立计及量测不确定性的区间状态估计模型,并线性化区间量测函数以降低模型复杂度。然后,提出结合区间约束传播的改进Krawczyk-Moore(KM)算法求解区间状态估计模型,采用改进的KM算子设定合理的初始解区间,引入区间约束传播缓解KM算法区间过度扩张的问题。基于IEEE 33节点和IEEE 118节点配电系统的仿真结果表明,所提方法在保证区间完备性的同时有效降低了估计区间的保守性。

关键词：配电网多源量测数据融合区间状态估计 Krawczyk-Moore算法

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小儿便秘的分类及病理生理的研究现状

临床医学研究与实践 2024年第9期9卷 191-194页

作者：罗宏斌广东医科大学广东湛江524023

小儿便秘是一种小儿常见的消化道症状,目前对于小儿便秘的分类及病理生理综述暂有所欠缺。本文主要对小儿便秘进行原发性、继发性的分类,同时简述了小儿原发性、继发性便秘的病因及其病理生理机制的相关研究进展,以期为小儿便秘的临床... 详细信息

小儿便秘是一种小儿常见的消化道症状,目前对于小儿便秘的分类及病理生理综述暂有所欠缺。本文主要对小儿便秘进行原发性、继发性的分类,同时简述了小儿原发性、继发性便秘的病因及其病理生理机制的相关研究进展,以期为小儿便秘的临床诊断和治疗提供参考,但某些病因相关研究及其病理生理机制尚有欠缺,有待未来进行进一步的研究和探讨。

关键词：小儿便秘病因病理生理机制疾病分类研究现状