检索结果-南通市图书馆

同方期刊数据库

Phase Morphology Evolution in AISI301 Austenite Stainless Steel under Different Cooling Rates

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2015年第2期30卷 392-396页

作者：白亮麻永林 XING Shuqing liu chenxin ZHANG Jieyu Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University Material and Metallurgical School Inner Mongolia University of Science and Technology Jinan Iron and Steel Co. Ltd

Quenching experiments were performed at different cooling rates under non-directional solidification by differential thermal analysis, and the morphologic variation of primary phase, phase transition temperature and hardness change at the same quenching temperature were investigated. The experimental results show that, with the gradual decrease of the cooling rate from 25 K/min, the morphology of ferrite starts to transform experiencing the dendrite, radial pattern, Widmanstatten-like and wire-net. Sample starts to present the Widmanstatten-like microstructure at 10 K/min which does not exist at higher or lower cooling rates, and this microstructure is detrimental to the mechanical property. Except 10 K/min, the hardness decreases with decreasing cooling rate.

关键词： cooling rate non-directional solidification morphology evolution primary phase

Dielectric and thermal properties characterisation and evaluation of novel epoxy materials for high-voltage power module packaging

在线全文

学校读者我要写书评

暂无评论

High Voltage 2024年第5期9卷 1021-1032页

作者： Zhengdong Wang Ganqiu Yang Xiaolong Cao Mengli Li Tong Zhang chenxin liu Yuanhang Zhou Yonghong Cheng School of Mechanical and Electrical Engineering Xi'an University of Architecture and TechnologyXi'anChina State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'anChina

Internal insulation of high-voltage power modules is facing interesting failure risks,including high temperature overheating,breakdown fault,material cracking etc.,so it is imperative to urgently develop new dielectric materials with high thermal conductivity(λ),outstanding electrical insulation,and thermal stability properties.A method to construct controllable liquid crystalline cross-linking networks based on the synthesis of biphenyl epoxy monomer and the change of curing agent structures and curing temperature is *** uniform nematic rod-like liquid crystalline domains were obtained by using 4,4-diaminodiphenylmethane as a curing agent under a pre-curing temperature of 105°*** resulting film(abbreviated as TD-105)exhibitedλup to 0.53 W m^(-1) K^(-1) and a dielectric breakdown strength of 57.69 kV mm^(-1),which showed a simultaneous enhancement of 178%and 16%,respectively,compared to traditional bisphenol A epoxy ***,it also exhibited lower dielectric loss and magnitude of partial discharge while having higher glass-transition temperature(190°C).A novel idea for the development of high-performance epoxy insulating materials for the application of high-voltage and large-power electrical equipment is provided.

关键词： thermal dielectric curing

Heme oxygenase 1-mediated ferroptosis in Kupffer cells initiates liver injury during heat stroke

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2024年第9期14卷 3983-4000页

作者： Ru Li Riqing Wei chenxin liu Keying Zhang Sixiao He Zhifeng liu Junhao Huang Youyong Tang Qiyuan An Ligen Lin Lishe Gan Liying Zhao Xiaoming Zou Fudi Wang Yuan Ping Qiang Ma The Seventh Affiliated Hospital Southern Medical UniversityFoshan 528244China Department of Biopharmaceutics School of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhou 510000China Medical Critical Care Medicine General Hospital of Southern Theatre Command of PLAGuangzhou 510000China Guangdong Branch Center National Clinical Research Center for Geriatric Diseases(Chinese PLA General Hospital)Guangzhou 510000China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoAvenida da UniversidadeTaip1Macao 999078China School of Pharmaceutical Sciences Zhejiang Chinese Medical UniversityHangzhou 311402China Department of General Surgery Nanfang Hospitalthe First School of Clinical MedicineSouthern Medical UniversityGuangzhou 510000China The Fourth Affiliated Hospital the First Affiliated HospitalSchool of Public HealthInstitute of Translational MedicineCancer CenterState Key Laboratory of Experimental HematologyZhejiang University School of MedicineHangzhou 310000China The First Affiliated Hospital the Second Affiliated HospitalBasic Medical SciencesSchool of Public HealthHengyang Medical SchoolUniversity of South ChinaHengyang 421200China College of Pharmaceutical Sciences Zhejiang UniversityHangzhou 310000China Liangzhu Laboratory Zhejiang University Medical CenterHangzhou 310000China Guangdong Provincial Key Laboratory of Immune Regulation and Immunotherapy School of Laboratory Medicine and BiotechnologySouthern Medical UniversityGuangzhou 510000China

With the escalating prevalence of global heat waves,heat stroke has become a prominent health concern,leading to substantial liver *** other forms of liver injury,heat strokeinduced damage is characterized by heat cytotoxicity and heightened inflammation,directly contributing to elevated mortality *** clinical assessments have identified elevated bilirubin levels as indicative of Kupffer cell dysfunction,their specific correlation with heat stroke liver injury remains *** hypothesis proposes the involvement of Kupffer cell ferroptosis during heat stroke,initiating IL-1bmediated *** single-cell RNA sequencing of murine macrophages,a distinct and highly susceptible Kupffer cell subtype,Clec4Ft/CD206t,emerged,with heme oxygenase 1(HMOX-1)playing a pivotal ***,heat-induced HMOX-1,regulated by early growth response factor 1,mediated ferroptosis in Kupffer cells,specifically in the Clec4F t/CD206 t subtype(KC2),activating phosphatidylinositol 4-kinase beta and promoting PI4P *** cascade triggered NLRP3 inflammasome activation and maturation of *** findings underscore the critical role of targeted therapy against HMOX-1 in ferroptosis within Kupffer cells,particularly in Clec4F t/CD206 t *** an approach has the potential to mitigate inflammation and alleviate acute liver injury in the context of heat stroke,offering a promising avenue for future therapeutic interventions.

关键词： Heat stroke Liver injury Kupffer cells Ferroptosis Heme oxygenase 1 Phosphatidylinositol 4-kinase beta NLRP3 Early growth response factor 1

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

智能变电站集中式保护测控装置

电力系统自动化 2013年第12期37卷 100-103页

作者：熊剑刘陈鑫邓烽国电南瑞科技股份有限公司江苏省南京市210003

分析了智能变电站过程层采样值(SV)网络的数据流量,设计了基于SV组网、通用面向对象变电站事件(GOOSE)组网的集中式保护测控装置,详细叙述了集中式保护测控装置的软硬件设计方案。软件设计中除实现了一般保护测控功能外,还实现了快速母... 详细信息

分析了智能变电站过程层采样值(SV)网络的数据流量,设计了基于SV组网、通用面向对象变电站事件(GOOSE)组网的集中式保护测控装置,详细叙述了集中式保护测控装置的软硬件设计方案。软件设计中除实现了一般保护测控功能外,还实现了快速母线保护、备用电源自动投入、小电流接地选线等功能。阐述了在智能变电站中集中式保护测控装置的2种应用场景。实际工程应用表明了所设计方案的可行性。

关键词： IEC 61850 智能变电站集中式保护测控嵌入式平台

Role of the globus pallidus in motor and non-motor symptoms of Parkinson's disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第6期20卷 1628-1643页

作者： Yimiao Jiang Zengxin Qi Huixian Zhu Kangli Shen Ruiqi liu chenxin Fang Weiwei Lou Yifan Jiang Wangrui Yuan Xin Cao Liang Chen Qianxing Zhuang Department of Physiology School of MedicineNantong UniversityNantongJiangsu ProvinceChina Department of Neurosurgery Huashan HospitalShanghai Medical CollegeFudan UniversityShanghaiChina National Center for Neurological Disorders ShanghaiChina Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration ShanghaiChina State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Institute of Brain ScienceFudan UniversityShanghaiChina

The globus pallidus plays a pivotal role in the basal ganglia circuit. Parkinson's disease is characterized by degeneration of dopamine-producing cells in the substantia nigra, which leads to dopamine deficiency in the brain that subsequently manifests as various motor and non-motor symptoms. This review aims to summarize the involvement of the globus pallidus in both motor and non-motor manifestations of Parkinson's disease. The firing activities of parvalbumin neurons in the medial globus pallidus, including both the firing rate and pattern, exhibit strong correlations with the bradykinesia and rigidity associated with Parkinson's disease. Increased beta oscillations, which are highly correlated with bradykinesia and rigidity, are regulated by the lateral globus pallidus. Furthermore,bradykinesia and rigidity are strongly linked to the loss of dopaminergic projections within the cortical-basal ganglia-thalamocortical loop. Resting tremors are attributed to the transmission of pathological signals from the basal ganglia through the motor cortex to the cerebellum-ventral intermediate nucleus circuit. The cortico–striato–pallidal loop is responsible for mediating pallidi-associated sleep disorders. Medication and deep brain stimulation are the primary therapeutic strategies addressing the globus pallidus in Parkinson's disease. Medication is the primary treatment for motor symptoms in the early stages of Parkinson's disease, while deep brain stimulation has been clinically proven to be effective in alleviating symptoms in patients with advanced Parkinson's disease,particularly for the movement disorders caused by levodopa. Deep brain stimulation targeting the globus pallidus internus can improve motor function in patients with tremordominant and non-tremor-dominant Parkinson's disease, while deep brain stimulation targeting the globus pallidus externus can alter the temporal pattern of neural activity throughout the basal ganglia–thalamus network. Therefore, the comp

关键词： anxiety basal ganglia bradykinesia deep brain stimulation depression globus pallidus externus globus pallidus internus lateral globus pallidus medial globus pallidus neural circuit Parkinson's disease

系统科学视角下的城市建模与城市计算研究进展

在线全文

学校读者我要写书评

暂无评论

电子科技大学学报 2022年第5期51卷 786-799页

作者：李睿琪刘晨馨尚璠狄增如北京化工大学信息科学与技术学院北京朝阳区100029 北京师范大学系统科学学院北京海淀区100875 北京师范大学珠海校区复杂系统国际科学中心广东珠海519087

本文综述了近年来融合大数据挖掘技术及系统科学研究方法在城市建模与城市计算方面的研究进展,介绍了城市的复杂系统属性,总结了城市感知、城市复杂系统结构实证研究、演化机制研究方面的重要工作,并进一步揭示城市标度律与空间标度律... 详细信息

本文综述了近年来融合大数据挖掘技术及系统科学研究方法在城市建模与城市计算方面的研究进展,介绍了城市的复杂系统属性,总结了城市感知、城市复杂系统结构实证研究、演化机制研究方面的重要工作,并进一步揭示城市标度律与空间标度律的可能起源,以及能够同时解释不同尺度下的复杂城市现象的统一理论分析框架。

关键词：活跃人口复杂网络城市复杂系统涌现行为交互演化模型空间标度律

在线全文

学校读者我要写书评

暂无评论

中厚板轧制变形数值模拟

宽厚板 2014年第6期20卷 34-39页

作者：刘陈新济南钢铁集团公司

主要利用Gleeble-1500D热模拟机模拟压缩实验和ABAQUS有限元模拟软件建模,对济钢宽厚板厂X70管线钢的轧制变形过程进行热力耦合模拟计算,根据模拟计算结果对典型道次的应力、应变、板型等进行分析,为轧钢生产提供合理的工艺参数,以期延... 详细信息

主要利用Gleeble-1500D热模拟机模拟压缩实验和ABAQUS有限元模拟软件建模,对济钢宽厚板厂X70管线钢的轧制变形过程进行热力耦合模拟计算,根据模拟计算结果对典型道次的应力、应变、板型等进行分析,为轧钢生产提供合理的工艺参数,以期延长轧机寿命、提高产品质量和减少试错过程的消耗。

关键词：中厚板轧制热力耦合数值模拟

在线全文

学校读者我要写书评

暂无评论

宁波某院士中心供配电及智能照明设计

现代建筑电气 2023年第9期14卷 5-12页

作者：刘晨欣同济大学建筑设计研究院(集团)有限公司上海200092

以宁波某院士中心为例,重点介绍了院士中心的供配电设计,其中数据中心设计及智能照明系统设计是项目的主要亮点。该项目为2路10 kV级双重电源供电,设置了1个10 kV高压配电间和2个10 kV变电所。结合使用方实际需求,在东楼设计数据中心,... 详细信息

以宁波某院士中心为例,重点介绍了院士中心的供配电设计,其中数据中心设计及智能照明系统设计是项目的主要亮点。该项目为2路10 kV级双重电源供电,设置了1个10 kV高压配电间和2个10 kV变电所。结合使用方实际需求,在东楼设计数据中心,数据中心等级为B级。该项目根据建筑功能分区及使用效果,设置了结合DMX调光、DALI调光、0~10 V调光及FPC调光的照明控制系统,实现智能照明的落地。同时提供EPC项目的施工配合经验,为后续设计提供参考。

关键词：供配电系统数据中心智能照明 EPC项目

在线全文

学校读者我要写书评

暂无评论

固网交换机退网评判方法及流程

电信快报（网络与通信） 2011年第4期 19-23页

作者：刘陈昕福建省邮电规划设计院有限公司福建省福州市350011

固网交换机作为传统话音业务的关键承载设备,在经历了长期运营后,必然会面临设备老化、新旧更替的问题,但要科学合理的评判这些设备的状态,往往由于涉及的因素较多、影响机制较复杂而难以开展。文章通过对固网交换机退网、补网建设过程... 详细信息

固网交换机作为传统话音业务的关键承载设备,在经历了长期运营后,必然会面临设备老化、新旧更替的问题,但要科学合理的评判这些设备的状态,往往由于涉及的因素较多、影响机制较复杂而难以开展。文章通过对固网交换机退网、补网建设过程中关键问题的剖析,对固网交换机退网评估的关键因素及其作用链进行聚焦,经过归纳提炼,明确了退网分析的关键环节及相应的分析方法,提出实用的固网交换机退网评判流程。

关键词：程控交换机退网评判层次分析法