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Optimization of integrated resource utilization in railway hubs with mixed high-speed and conventional operations at shared stations 认领 引用
1
作者 Sitong Xiang Feng Lin +2 位作者 Zhigang Le Datong Song Ershuai Nie 《Railway Sciences》 2026年第4期489-504,共16页
Purpose-With the continuous expansion of railway hubs,increasing functional complexity and growing capacity constraints,the coordinated and efficient utilization of transportation resources-such as stations,lines and ... Purpose-With the continuous expansion of railway hubs,increasing functional complexity and growing capacity constraints,the coordinated and efficient utilization of transportation resources-such as stations,lines and maintenance facilities-has become a critical issue for improving hub operational efficiency.This study focuses on the division of functions within railway hubs that incorporate shared stations operating under mixed high-speed and conventional train services.Design/methodology/approach-An optimization model for hub functional allocation is developed to achieve efficient resource utilization in hubs containing mixed-operation stations.A node-arc network representation combined with an improved multi-commodity flow model is employed,taking train dwell and operation time within the hub as the optimization objective.A case study is conducted to derive optimized solutions,followed by both qualitative and quantitative analyses.Findings-The results indicate that optimizing train operation routes and station assignments within the hub can effectively reduce the total occupation time of train flows and significantly improve resource utilization efficiency.Originality/value-The proposed model demonstrates both scientific rigor and practical effectiveness.In realworld operations,it can provide operators with preliminary and proactive functional allocation schemes,help identify key constraints limiting hub capacity utilization and offer decision support for transport plan adjustments or infrastructure and facility upgrades. 展开更多
关键词 Mixed high-speed and conventional operations Railway hub Hub functional allocation Route optimization ILOG CPLEX
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Permeance-harmonic-oriented Design and Optimization of a Field-modulated PM Hub Motor for High Torque Density 认领 引用
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作者 Yuting Zhou Zixuan Xiang +3 位作者 Xiaoyong Zhu Qian Liu Deyang Fan Kunhua Chen 《CES Transactions on Electrical Machines and Systems》 EI CSCD 2026年第2期176-187,共12页
This paper investigates an aggregated design and optimization method for permanent magnet hub(PMH)motors,guided by permeance harmonics,to meet low-speed,high-torque requirements.The key lies in establishing the correl... This paper investigates an aggregated design and optimization method for permanent magnet hub(PMH)motors,guided by permeance harmonics,to meet low-speed,high-torque requirements.The key lies in establishing the correlation between stator and rotor permeance harmonics and torque.Firstly,contribution equations describing the influence of stator and rotor permeance harmonics on torque are derived.It reveals that the contribution degree is affected by harmonic amplitude and phase.Then,the selection criteria for stator and rotor topology are formulated.The amplitude and phase characteristics of the permeance harmonic group are considered in criteria,which aim to achieve the aggregated design from a permeance harmonic perspective.Furthermore,based on the identified aggregated permeance harmonics,the airgap flux density harmonics directly linked to permeance harmonics are determined.Taking these harmonics as the goal,they are involved in the optimization process for high torque density.Sensitivity analysis and response surface analysis are adopted,respectively,to lock the design variables and their parameter ranges.Then,the motor topology with characteristics of high torque density is obtained through multi-objective optimization.Finally,a prototype experiment is conducted on the optimized PMH motor. 展开更多
关键词 Permanent magnet hub(PMH)motor torque density harmonic characteristic
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基于膝骨关节炎多组织、多表型hub基因的转录组学研究进展 认领 引用
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作者 何启旺 王威 +4 位作者 张志文 周天乐 杨皓程 刘曦明 董石磊 《中国中医骨伤科杂志》 2026年第8期103-112,共10页
骨关节炎是最常见的关节退行性疾病,严重影响着患者生存质量和医疗保健成本。系统整合近五年膝骨关节炎的转录组学研究,综合运用批量转录组、单细胞转录组及表观转录组等多组学数据,旨在揭示膝骨关节炎的高度异质性分子机制并筛选hub基... 骨关节炎是最常见的关节退行性疾病,严重影响着患者生存质量和医疗保健成本。系统整合近五年膝骨关节炎的转录组学研究,综合运用批量转录组、单细胞转录组及表观转录组等多组学数据,旨在揭示膝骨关节炎的高度异质性分子机制并筛选hub基因。共鉴定出135个hub基因,并成功将其映射至铁死亡、细胞衰老、代谢紊乱等31种核心病理表型;分析发现铁死亡与细胞衰老是当前研究焦点,且CDKN1A等基因在跨组织研究中被反复验证,凸显了其在病理网络中的核心地位。研究突破了单一组织与表型的传统局限,系统描绘了膝骨关节炎的多维调控图谱,为靶向治疗提供了新视角;未来研究需借助空间转录组等新兴技术构建完整基因信息流调控网络,以推动膝骨关节炎的精准诊疗。 展开更多
关键词 膝骨关节炎 转录组学 hub基因 生物信息学 精准医疗
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Hub genes and diagnostic model associated with mitochondrial function in Alzheimer ' s disease 认领 引用
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作者 Xuchao Zhu Ling Zhang Chuan Qin 《Animal Models and Experimental Medicine》 CAS CSCD 2026年第2期237-248,I0001,共12页
Background:Alzheimer's disease(AD)represents the most prevalent neurodegenerative disorder,with mitochondrial dysfunction being observed in both AD patients and mouse models.Nonetheless,further investigation is re... Background:Alzheimer's disease(AD)represents the most prevalent neurodegenerative disorder,with mitochondrial dysfunction being observed in both AD patients and mouse models.Nonetheless,further investigation is required to elucidate the pathogenic genes associated with AD and to develop early diagnostic methodologies centered on mitochondrial function.Methods:In this study,the dataset GSE132903 was retrieved from the GEO database,encompassing both non-demented(ND)control and AD samples.Through the combination of differential expression gene analysis,weighted gene co-expression network analysis,and intersection with mitochondrial database gene sets,four hub genes associated with AD were identified.These four hub genes were subsequently validated in APP/PS1 and 5xFAD mouse models using molecular biology techniques.Results:The hub genes identified through bioinformatics analysis include SYNJ2BP,VDAC1,NUBPL,and COX19.Within the GSE132903 dataset,the expression levels of SYNJ2BP,NUBPL,and COX19 were significantly elevated in the AD group compared to the non-demented(ND)group,whereas VDAC1 expression was reduced in the AD group relative to the ND group.Furthermore,in the hippocampus of APP/PS1 and 5xFAD mouse models,the expression patterns of SYNJ2BP and NUBPL were consistent with the bioinformatics analysis results.Conclusion:Hub genes identified here through bioinformatics and molecular biology may help early diagnosis of AD patients and may also help build new AD models to explore its pathogenesis. 展开更多
关键词 Alzheimer's disease diagnostic model hub gene mitochondria
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Hypoxia-inducible factor-1α/β-catenin axis:A conserved regulatory hub for enhancing stem cell function in tissue regeneration 认领 引用
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作者 Hui-Fang Wang Peng-Yu Yan +2 位作者 Shoaib Muhammad Yu-Xiang Liu Chun Liu 《World Journal of Stem Cells》 SCIE 2026年第5期1-8,共8页
This article provides an in-depth commentary on the study by Wang et al,which elucidates that the hypoxia-inducible factor-1α(HIF-1α)/β-catenin axis serves as a core hub regulating the function of peripheral blood ... This article provides an in-depth commentary on the study by Wang et al,which elucidates that the hypoxia-inducible factor-1α(HIF-1α)/β-catenin axis serves as a core hub regulating the function of peripheral blood mesenchymal stem cells(PBMSCs)under hypoxic conditions.The research confirms that in a hypoxic environment,HIF-1αacts as an upstream regulator by directly binding to and activating the transcription ofβ-catenin,a relationship that is unidirectional and irreversible.This axis enhances the therapeutic potential of PBMSCs through a dual mechanism:On one hand,it regulates anti-apoptotic proteins while inhibiting pro-apoptotic molecules,significantly improving cell survival and self-renewal capacity;on the other hand,it promotes the secretion of factors such as vascular endothelial growth factor,thereby enhancing angiogenic activity.In a rat myocardial infarction model,PBMSCs overexpressing HIF-1αshowed significantly improved retention in the infarcted area,reduced infarct size,and promoted neovascularization-effects that were abolished upon knockdown ofβ-catenin.This discovery provides a key target for optimizing stem cell therapy for myocardial infarction.By pre-activating this axis in vitro(e.g.,via lentiviral vectors or small-molecule regulators),it is possible to standardize and enhance the survival and reparative capacity of PBMSCs in ischemic tissues,holding important translational medical value. 展开更多
关键词 Hypoxia-inducible factor-1α β-catenin Stem cell Tissue regeneration Conserved regulatory hub
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基于改进核度的城市路网hub节点辨识方法 认领 引用
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作者 孟莉华 王世广 《智能城市》 2026年第5期6-10,共5页
城市道路交通网络中hub节点的有效辨识对应急疏散及协调控制具有重要意义,现有方法难以全面兼顾拓扑结构与交通流特性,参数获取难度较大。文章结合复杂网络理论,定义基于机动车道属性的节点改进度与节点空间核概念,设计综合考虑路网拓... 城市道路交通网络中hub节点的有效辨识对应急疏散及协调控制具有重要意义,现有方法难以全面兼顾拓扑结构与交通流特性,参数获取难度较大。文章结合复杂网络理论,定义基于机动车道属性的节点改进度与节点空间核概念,设计综合考虑路网拓扑结构、空间地理属性及交通流特性的hub节点辨识方法,并选取长春市区域路网进行实例验证。结果表明,该方法与现有方法在hub节点判别上的结论一致,但排序结果更具解释性。交通流仿真结果显示,辨识出的hub节点(交叉口2)故障后,路网行程时间、停车次数、总延误恶化程度较大,加权指标为14.95;若该节点失效,路网平均路径距离增幅最大,规模缩减显著。基于改进核度的辨识方法能够有效地识别城市路网hub节点,为交通网络应急管理、子区划分及协调控制提供参考。 展开更多
关键词 交通工程 城市路网 hub节点 核度 节点重要性
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基于加权基因共表达网络分析识别并鉴定胰腺癌的Hub基因 认领 引用
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作者 彭瑶 张明军 《医学理论与实践》 2026年第1期6-10,共5页
目的:运用加权基因共表达网络分析(WGCNA)结合机器学习算法发掘胰腺癌新的生物标志物。方法:通过对基因表达综合数据库(GEO)中胰腺癌及正常胰腺组织的RNA测序表达数据集进行差异表达基因分析,利用WGCNA识别关键模块和基因,结合Lasso回... 目的:运用加权基因共表达网络分析(WGCNA)结合机器学习算法发掘胰腺癌新的生物标志物。方法:通过对基因表达综合数据库(GEO)中胰腺癌及正常胰腺组织的RNA测序表达数据集进行差异表达基因分析,利用WGCNA识别关键模块和基因,结合Lasso回归分析及生存分析,确定Hub基因并对其诊断效能进行验证。结果:在GSE15471和GSE16515数据集中,鉴定出123个差异表达基因,WGCNA确定了7个共表达模块,其中黄色模块与胰腺癌具有强相关性。在黄色模块中筛选出49个关键基因,并与差异表达基因取交集得到18个交集基因。通过Lasso回归分析和生存分析,最终确定了6个Hub基因(C15orf48、C19orf33、GPRC5A、KRT19、LAMB3和SLC6A14),这些基因在胰腺癌中表达上调,且与患者总生存期相关。ROC曲线分析显示,这6个Hub基因在训练集和验证集中均表现出良好的诊断效能。结论:C15orf48、C19orf33、GPRC5A、KRT19、LAMB3和SLC6A14在胰腺癌的发生发展中可能具有重要生物学意义,为胰腺癌诊断、治疗及预后评估提供生物标志物线索。 展开更多
关键词 胰腺癌 加权基因共表达网络分析 Hub基因 生物标志物
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Research on Current Parking Conditions of Non-motor Vehicles and Optimization Strategies at Pingguoyuan Comprehensive Transportation Hub in Shijingshan District,Beijing City 认领 引用
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作者 LIU Yuxi CHAI Jing 《Journal of Landscape Research》 2026年第3期1-4,共4页
The parking order of non-motor vehicles at a comprehensive transportation hub is a critical factor affecting transfer efficiency and travel experience.In this paper,the parking conditions of nonmotor vehicles at all e... The parking order of non-motor vehicles at a comprehensive transportation hub is a critical factor affecting transfer efficiency and travel experience.In this paper,the parking conditions of nonmotor vehicles at all entrances and exits of Pingguoyuan Comprehensive Transportation Hub were studied through field observation and photographic documentation,and the parking issues and root causes at three typical access points(E,H,and B)were thoroughly discussed.It is found that non-motor vehicle parking at the hub faces three universal constraints,such as unbalanced supply and demand,uneven provision of supporting facilities,and weak parking order management.Each of the three entrances shows distinct challenges.Entrance E suffers from insufficient parking space and inadequate signage;entrance H lacks overhead shelters despite adequate basic supporting facilities;entrance B faces overloaded parking capacity and deficient on-site management.In response to these issues,differentiated improvement schemes were put forward,including expanding parking zones,installing overhead shelters,tapping underutilized space to increase parking capacity,and establishing standardized regular management mechanisms.The research findings can serve as a reference for improving the parking management of non-motor vehicles at Pingguoyuan Hub and other analogous comprehensive transportation hubs. 展开更多
关键词 Parking of non-motor vehicles Pingguoyuan Transportation Hub Parking facilities Optimization strategies
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A Deep-Water Harbor on Track to Become International Hub 认领 引用
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作者 XIA YUANYUAN 《China Today》 2026年第3期37-39,共3页
Over the past months,a southern Chinese harbor serving as a pivotal gateway to regions around the world has come into the spotlight after the launching of special customs operations on Hainan Island.LOCATED on the nor... Over the past months,a southern Chinese harbor serving as a pivotal gateway to regions around the world has come into the spotlight after the launching of special customs operations on Hainan Island.LOCATED on the northwest tip of HainanIsland,the Yangpu Port is a scene ofbustling activity with towering gantrycranes busily loading containers on andoff large cargo vessels.Port orders here have surgedas a result of a slew of special customs policiesthat went into force last December. 展开更多
关键词 towering gantrycranes pivotal gateway launching special customs operations special customs policiesthat southern chinese harbor deep water harbor international hub yangpu port
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Beijing’s Drive to Build a Global Sci-Tech Innovation Hub 认领 引用
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作者 LU JIAJUN 《China Today》 2026年第8期34-37,共4页
AS the global innovation landscape undergoes rapid changes,Beijing is redefining China’s technological frontier with the steadiness and ambition of true innovation.The city’s society-wide R&D investment intensit... AS the global innovation landscape undergoes rapid changes,Beijing is redefining China’s technological frontier with the steadiness and ambition of true innovation.The city’s society-wide R&D investment intensity has remained above six percent for many years.Its investment in basic research has ranked first on the Nature Index Science Cities for nine consecutive years,and nearly 30 percent of China’s national key laboratories are based in Beijing. 展开更多
关键词 basic research key laboratories rapid changes technological frontier R D investment true innovationthe Nature Index global sci tech innovation hub
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交通枢纽与商业地产的协同进化:从“流量入口”到“价值高地”的激活路径探析——海口龙湖光年Urban Hub设计实践 认领 引用
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作者 林浩 《城市建筑》 2026年第8期137-140,共4页
文章以海口龙湖光年TOD项目为实证案例,探讨交通枢纽与商业地产的协同发展路径。项目摒弃“站商分离”的传统开发模式,构建以高铁站为流量入口、以商业综合体为价值载体的Urban Hub系统,借助“泛候车厅”机制实现流量转化与价值提升。... 文章以海口龙湖光年TOD项目为实证案例,探讨交通枢纽与商业地产的协同发展路径。项目摒弃“站商分离”的传统开发模式,构建以高铁站为流量入口、以商业综合体为价值载体的Urban Hub系统,借助“泛候车厅”机制实现流量转化与价值提升。从交通赋能(立体分流体系提升通行效率)、功能复合(三核叠合优化业态密度)、空间融合(消融站城边界营造连续体验)、协同运营(精细化机制保障价值释放)四大维度展开实践。结果表明,该路径可显著提升空间效能,为高密度城市TOD开发提供可复制的“流量—价值”激活范式。 展开更多
关键词 交通枢纽 商业地产 协同进化 流量入口 价值高地 Urban Hub 泛候车厅 激活路径
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An inspiration hub,a window for collaboration!YKK's largest integrated global showroom has opened in Xiamen 认领 引用
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作者 Zhong Mengxia 《China Textile》 2026年第1期14-15,共2页
As the sunlight scattered on the sea of Guanyinshan in Xiamen,a space that bridges creativity and industry opened its door to the world.On December 15th,following a ribbon-cutting and unveiling ceremony,YKK Xiamen Gua... As the sunlight scattered on the sea of Guanyinshan in Xiamen,a space that bridges creativity and industry opened its door to the world.On December 15th,following a ribbon-cutting and unveiling ceremony,YKK Xiamen Guanyinshan Showroom,the brand's second and largest comprehensive showroom,was officially inaugurated.This showroom is more than a product display window,it is an"Inspiration Hub"integrating exhibition,co-creation,and service.Its launch signifies YKK's progression in the Chinese market from“building an efficient product proposal system”to a new stage of“deep collaborative co-creation.” 展开更多
关键词 inspiration hub product display co creation showroom Guanyinshan collaboration service YKK
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Construction of a digital twin platform for large-scale reservoir hubs 认领 引用
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作者 WANG Binbin 《外文科技期刊数据库（文摘版）工程技术》 2026年第8期058-062,共5页
Large scale reservoir hubs are key control projects in the flood control system and water resource allocation pattern of the basin. Their safe operation and scientific scheduling are directly related to the safety of ... Large scale reservoir hubs are key control projects in the flood control system and water resource allocation pattern of the basin. Their safe operation and scientific scheduling are directly related to the safety of millions of people's lives and property downstream, as well as regional economic and social development. The digital twin technology is driving a profound transformation in reservoir management from "experience driven" to "data-driven" and from "passive response" to "active prediction" by constructing a "digital avatar" that maps and interacts with physical reservoirs in real-time. This article systematically analyzes the core value of the construction of a digital twin platform for large-scale reservoir hubs, and summarizes the key technical systems from three aspects: integrated monitoring and perception of "sky ground water engineering", construction of data base and model platform, and development of intelligent business applications. Typical projects such as Datongxia, Miyun Reservoir, and Danjiangkou are used as cases to analyze the practical experience of implementation. On this basis, in response to the current bottlenecks such as insufficient perception coverage, difficulties in data fusion, need for improvement in model accuracy, and inconsistent standards and specifications, promotion strategies have been proposed from four dimensions: consolidating the perception base, tackling data fusion, deepening model research and development, and improving the standard system. The aim is to provide theoretical reference and practical path for the digital twin platform of large-scale reservoir hubs to move from "demonstration exploration" to "large-scale implementation". 展开更多
关键词 large reservoir hub Digital twin Smart water conservancy Four predictions Landing construction
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HUBLOT 迈入全“心”时代 认领 引用
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作者 Ciling 《钟表》 2026年第3期58-59,共2页
如果说“融合的艺术”是宇舶表最广为人知的口号,那么在制表层面,Big Bang系列始终是这一理念最纯粹、也最具冲击力的载体。去年,Big Bang系列迎来了盛大的20周年庆典,今年,品牌以全新Big Bang Reloaded腕表回应未来,承袭Big Bang系列与... 如果说“融合的艺术”是宇舶表最广为人知的口号,那么在制表层面,Big Bang系列始终是这一理念最纯粹、也最具冲击力的载体。去年,Big Bang系列迎来了盛大的20周年庆典,今年,品牌以全新Big Bang Reloaded腕表回应未来,承袭Big Bang系列与Unico机心之精髓,开启全新纪元。Unico,当代计时的启蒙者回顾Unico机心的发展之路,有几个相当重要的时间节点。2010年,宇舶表发布了第一代Unico机心——HUB 1240自动上链飞返计时机心,在当时普遍采用ETA 7750和ETA 2894两款计时机心的大环境下,此举无疑领先于时代,更遑论鲜有品牌首枚自产机心就设定为导柱轮计时、且是飞返计时。 展开更多
关键词 Big Bang系列 Unico机心 HUB 1240
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Mixed parking demand assignment in hub parking lots based on regression modeling 认领 引用 被引量：1
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作者 ZHANG Chu CHEN Kehan +1 位作者 CHEN Jun CHEN Jiayi 《Journal of Southeast University(English Edition)》 EI CAS 2025年第3期270-277,共8页
To adapt to the unique demand-supply features of accessory parking lots at passenger transport hubs,a mixed parking demand assignment method based on regression modeling is proposed.First,an optimal model aiming to mi... To adapt to the unique demand-supply features of accessory parking lots at passenger transport hubs,a mixed parking demand assignment method based on regression modeling is proposed.First,an optimal model aiming to minimize total time expenditure is constructed.It incorporates parking search time,walking time,and departure time,focusing on short-term parking features.Then,the information dimensions that the parking lot can obtain are evaluated,and three assignment strategies based on three types of regression models-linear regression(LR),extreme gradient boosting(XGBoost),and multilayer perceptron(MLP)-are proposed.A parking process simulation model is built using the traffic simulation package SUMO to facilitate data collection,model training,and case studies.Finally,the performance of the three strategies is com-pared,revealing that the XGBoost-based strategy performs the best in case parking lots,which reduces time expendi-ture by 29.3%and 37.2%,respectively,compared with the MLP-based strategy and LR-based strategy.This method offers diverse options for practical parking manage-ment. 展开更多
关键词 parking areas assignment hub parking lot regression-based modeling extreme gradient boosting(XG-Boost)
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Dynamic recrystallization behavior and spinning texture formation mechanism of magnesium alloy wheel hub 认领 引用
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作者 Bing-chun JIANG Hao-wei ZHAI +3 位作者 Qing-hang WANG Meng LI Tong ZHANG Bin JIANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2025年第6期1787-1802,共16页
The dynamic recrystallization(DRX)behavior and texture formation mechanism in an AZ31 magnesium alloy wheel hub during the spinning process were investigated.Analysis using optical microscopy,electron backscatter diff... The dynamic recrystallization(DRX)behavior and texture formation mechanism in an AZ31 magnesium alloy wheel hub during the spinning process were investigated.Analysis using optical microscopy,electron backscatter diffraction,transmission electron microscopy,and finite element simulation revealed that continuous dynamic recrystallization(CDRX)and grain boundary bulging occurred simultaneously throughout the spinning process,leading to an increased proportion of DRXed grain areas.The newly formed DRXed grains largely retained the orientations of their deformed parent grains.The spinning process had two stages:initially,deformation was driven by basalslip as the roller contacted the alloy and descended to its lowest point.In the later stage,pyramidalslips became predominant as additional force was applied along the spinning direction(SD),forming a final texture with the c-axis tilting±15°towards the SD.This texture development led to discernible anisotropy in tensile properties along the SD and the tangential direction(TD). 展开更多
关键词 magnesium alloy wheel hub dynamic recrystallization spinning texture dislocation slip mechanical anisotropy
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Immune Dysregulation and Hub Gene Identification in Non-Pulmonary Sepsis-Induced Acute Lung Injury:Insights from Transcriptomic and Experimental Analyses 认领 引用
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作者 Chen Yan Wen Li +6 位作者 Yang-ming Cai Wei-yi Cai Nian-dan Hu Yang-yi-yan Song Wen-qiang Li Zhou Sun Qing Geng 《Current Medical Science》 SCIE CAS CSCD 2025年第4期877-888,共12页
Objective Sepsis-induced acute lung injury(ALI)poses a critical challenge in critical care,yet its immunoregulatory mechanisms remain poorly defined.This study aimed to delineate immune dysregulation networks and iden... Objective Sepsis-induced acute lung injury(ALI)poses a critical challenge in critical care,yet its immunoregulatory mechanisms remain poorly defined.This study aimed to delineate immune dysregulation networks and identify therapeutic targets through multiomics data integration.Methods Transcriptomic datasets(GSE40180 and GSE165226)were analyzed through a multiphase bioinformatics workflow,including gene set enrichment analysis(GSEA),immune cell deconvolution(CIBERSORT),differential gene expression profiling(|log2FC|>1.5,P.adj0.85,P<0.001).Conclusion Innate adaptive immune crosstalk,particularly dysregulated immune cell infiltration,drives sepsis-induced ALI pathogenesis.The 7 hub genes mechanistically connect immune dyshomeostasis to tissue injury,suggesting novel targets for precision immunomodulation and biomarker development in critical care. 展开更多
关键词 Acute lung injury Non-pulmonary sepsis Immune dysregulation Immune cell infiltration Hub gene
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Security distance analysis of active distribution network considering energy hub demand response 认领 引用
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作者 Rui Ma Qi Zhou +2 位作者 Shengyang Liu Qin Yan Mo Shi 《Global Energy Interconnection》 EI CSCD 2025年第1期160-173,共14页
This study proposes a method for analyzing the security distance of an Active Distribution Network(ADN)by incorporating the demand response of an Energy Hub(EH).Taking into account the impact of stochastic wind-solar ... This study proposes a method for analyzing the security distance of an Active Distribution Network(ADN)by incorporating the demand response of an Energy Hub(EH).Taking into account the impact of stochastic wind-solar power and flexible loads on the EH,an interactive power model was developed to represent the EH’s operation under these influences.Additionally,an ADN security distance model,integrating an EH with flexible loads,was constructed to evaluate the effect of flexible load variations on the ADN’s security distance.By considering scenarios such as air conditioning(AC)load reduction and base station(BS)load transfer,the security distances of phases A,B,and C increased by 17.1%,17.2%,and 17.7%,respectively.Furthermore,a multi-objective optimal power flow model was formulated and solved using the Forward-Backward Power Flow Algorithm,the NSGA-II multi-objective optimization algo-rithm,and the maximum satisfaction method.The simulation results of the IEEE33 node system example demonstrate that after opti-mization,the total energy cost for one day is reduced by 0.026%,and the total security distance limit of the ADN’s three phases is improved by 0.1 MVA.This method effectively enhances the security distance,facilitates BS load transfer and AC load reduction,and contributes to the energy-saving,economical,and safe operation of the power system. 展开更多
关键词 Active distribution network Energy hub Security distance Base station load Air-conditioning load
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Research on vibration response and vibration attenuation model of comprehensive transportation hub under multiple-source excitations 认领 引用
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作者 Wu Qiaoyun Zhang Qingdong +2 位作者 Sun Jubo Chen Xuyong Xie Weiping 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2025年第2期527-545,共19页
To investigate the vibration response of the comprehensive transportation hub structure under multiple-source excitations,an on-site vibration measurement was carried out at Wuhan Railway Station in China.The characte... To investigate the vibration response of the comprehensive transportation hub structure under multiple-source excitations,an on-site vibration measurement was carried out at Wuhan Railway Station in China.The characteristics of each floor vibration were obtained through the time domain and frequency domain analyses.Based on the vibration characteristic under multiple-source excitations,the proposed attenuation model was derived.In addition,a vibration comfort evaluation on the Wuhan Railway Station was conducted.The results show that the effect of the number of vibration sources on horizontal acceleration is more significant than that regarding vertical acceleration.When the structure is under the effects two vibration sources with different frequencies,a high-frequency vibration can amplify a low-frequency vibration.The derived attenuation model can precisely predict the vibration attenuation and reduce the subsequent vibration test workload.Based on the annoyance rate model result,the annoyance rate of Wuhan Railway Station is high,which is harmful to the staff of the station. 展开更多
关键词 comprehensive transportation hub multiple-source excitations Wuhan Railway Station vibration measurement vibration attenuation model comfort evaluation
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Comprehensive Index Evaluation of the Cooling System with the Level Loop Thermosyphon System in Different Computing Hub Nodes in China 认领 引用
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作者 Li Ling Danhao Song +2 位作者 Qianlong Hu Zihao Xiang Zeyu Zhang 《Energy Engineering》 EI 2025年第8期3309-3328,共20页
Rack-level loop thermosyphons have been widely adopted as a solution to data centers’growing energy demands.While numerous studies have highlighted the heat transfer performance and energy-saving benefits of this sys... Rack-level loop thermosyphons have been widely adopted as a solution to data centers’growing energy demands.While numerous studies have highlighted the heat transfer performance and energy-saving benefits of this system,its economic feasibility,water usage effectiveness(WUE),and carbon usage effectiveness(CUE)remain underexplored.This study introduces a comprehensive evaluation index designed to assess the applicability of the rack-level loop thermosyphon system across various computing hub nodes.The air wet bulb temperature Ta,w was identified as the most significant factor influencing the variability in the combination of PUE,CUE,and WUE values.The results indicate that the rack-level loop thermosyphon system achieves the highest score in Lanzhou(94.485)and the lowest in Beijing(89.261)based on the comprehensive evaluation index.The overall ranking of cities according to the comprehensive evaluation score is as follows:Gansu hub(Lanzhou)>Inner Mongolia hub(Hohhot)>Ningxia hub(Yinchuan)>Yangtze River Delta hub(Shanghai)>Chengdu Chongqing hub(Chongqing)>Guangdong-Hong Kong-Macao Greater Bay Area hub(Guangzhou)>Guizhou hub(Guiyang)>Beijing-Tianjin-Hebei hub(Beijing).Furthermore,Hohhot,Lanzhou,and Yinchuan consistently rank among the top three cities for comprehensive scores across all load rates,while Guiyang(at a 25%load rate),Guangzhou(at a 50%load rate),and Beijing(at 75%and 100%load rates)exhibited the lowest comprehensive scores. 展开更多
关键词 Data center rack level loop thermosyphon different Computing hub node different load rates comprehensive indicator analysis
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