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Journal of Central South University 2024年第6期31卷 1774-1789页

作者： ZHANG Jin-hai NIE Kai-bo ZHANG Jin-hua DENG Kun-kun liu zhi-long College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China State Key Laboratory of High-end Compressor and System Technology Hefei 230031China

In this study,the Mg-3Zn-0.5Zr-χNd(χ=0,0.6)alloys were subjected to final rolling treatment with large deformation of 50%.The impact of annealing temperatures on the microstructure and mechanical properties was *** rolled Mg-3Zn-0.5Zr-0.6Nd alloy exhibited an ultimate tensile strength of 386 MPa,a yield strength of 361 MPa,and an elongation of 7.1%.Annealing at different temperatures resulted in reduced strength and obviously increased elongation for both *** mechanical properties for the Mg-3Zn-0.5Zr-0.6Nd alloy were achieved after annealing at 200℃,with an ultimate tensile strength of 287 MPa,a yield strength of 235 MPa,and an elongation of 26.1%.The numerous deformed microstructures,twins,and precipitated phases in the rolled alloy could impede the deformation at room temperature and increase the work hardening *** annealing,a decrease in the work hardening effect and an increase in the dynamic recovery effect were obtained due to the formation of fine equiaxed grains,and the increased volume fraction of precipitated phases,which significantly improved the elongation of the ***,the addition of Nd element could enhance the annealing recrystallization rate,reduce the Schmid factor difference between basal and prismatic slip systems,facilitate multi-system slip initiation and improve the alloy plasticity.

关键词： Mg-Zn-Zr-Nd alloy large final rolling deformation annealing temperatures microstructures mechanical properties

Mesh-supported V2O5-WO3/TiO2 nanosheet array catalysts for efficient removal of NOx

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Tungsten 2025年第1期7卷 100-111页

作者： zhi-Qi Zhang liu Yang Wen Luo Vladimir An Jing Li Bao-Dan liu School of Materials Science and Engineering Northeastern University Foshan Graduate School of Innovation Northeastern University Kizhner Research Center School of Advanced Manufacturing Technologies Tomsk Polytechnic University

The design and synthesis of vanadium-based denitration catalysts with low-temperature activity pose significant challenges in the field of toxic gas *** this study,we have developed a novel approach to fabricate highly efficient V2O5-WO3/TiO2monolithic mesh catalysts for NOxreduction at low ***,TiO2nanosheets with strong adhesion and large surface area were grown on Ti mesh using plasma electrolytic oxidation technology and hydrothermal ***,super-small traces of WO3and V2O5active nano-species were subsequently deposited on TiO2nanosheets using the deposition-precipitation *** to traditional ceramic-based V2O5-WO3/TiO2catalysts,our V2O5-WO3/TiO2monolithic mesh catalyst exhibits superior mechanical performance,excellent thermal conductivity,lower pressure drop,higher utilization of active components,and stronger synergistic ***,the V2O5-WO3/TiO2monolithic mesh catalysts exhibited excellent low-temperature catalytic activity with 98% of NOxconversion at 220℃,and remarkable long-term SO2tolerance and water resistance in the selective catalytic reduction（SCR） of NOxwith *** SCR reaction of tiny V2O5and WO3active species supported on TiO2nanosheets directly demonstrated to follow the Eley-Rideal mechanism by in situ infrared spectra.

关键词： Low temperature activity Monolithic mesh catalysts NH3-SCR SO2 tolerance V2O5-WO3/TiO2

刘志龙运用枳实导滞丸治疗慢性糜烂性胃炎经验

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河南中医 2022年第10期42卷 1523-1526页

作者：黎崇裕李俊王艺霖刘志龙珠海市中西医结合医院广东珠海519000

刘志龙教授认为,慢性糜烂性胃炎多见湿热阻滞胃肠之证,宜以消积导滞、清利湿热为主,临证常用枳实导滞丸加减治疗。枳实导滞丸由《金匮要略》泻心汤、枳术汤、泽泻汤相合再加茯苓、神曲而成。用泻心汤清热,枳术汤、泽泻汤祛湿,加神曲、... 详细信息

刘志龙教授认为,慢性糜烂性胃炎多见湿热阻滞胃肠之证,宜以消积导滞、清利湿热为主,临证常用枳实导滞丸加减治疗。枳实导滞丸由《金匮要略》泻心汤、枳术汤、泽泻汤相合再加茯苓、神曲而成。用泻心汤清热,枳术汤、泽泻汤祛湿,加神曲、茯苓消积导滞,助肠胃运化。运用枳实导滞丸时,常由丸改汤,称之为枳实导滞汤,此方重在消积下滞,且药量较小,注重因势利导,即后世所谓“轻法频下”,无论是糜烂性胃炎实证、虚证、虚实夹杂证皆可化裁用之。

关键词：慢性糜烂性胃炎枳实导滞丸泻心汤枳术汤泽泻汤刘志龙

Design of Objects Tracking System Based on ARM Embedded Platform

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Computer Aided Drafting,Design and Manufacturing 2014年第3期24卷 65-69页

作者： XU Mei SONG Yong-duan LV Shao-dong liu zhi-long HUANG Cong-ying School of Energy Science and Engineering University of Electronic Science and Technology of China

In recent years, according to the need of intelligent video surveillance system increasing rapidly in metropolitan cities ,a design based on $3C2440 microprocessor and embedded Linux operating system is adopted for real-time video target tracking. However, it is very challenging as embedded systems usually afford limited processing power and limited resources. Therefore, to address this problem, a real-time tracking algorithm using multi-features based on compressive sensing is proposed and implemented The algorithm uses multiple matrix as the projection matrix of the compressive sensing and the compressed date as the multiple features to extract useful information needed by tracking process. Functions and libraries in OpenCV which were developed by Intel Corporation are utilized for building the tracking algorithms. It is tested with variant video sequences and the results show that the algorithm achieves stable tracking for the target moved of the light changed.

关键词： embedded system OpenCV tracking algorithms compressive sensing

Ф4.2m×13.5m水泥磨加辊压机的技术改造

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水泥 2011年第4期 32-33页

作者：刘志龙南方水泥绍兴南方水泥有限公司浙江绍兴312028

我公司2500t/d生产线配套Ф4.2m×13.5m闭路水泥粉磨系统于2003年投产,至2009年水泥磨台时产量达到105t/h（P.O42.5级水泥,以下同）,工序电耗38kWh/t,大大超过了设计能力。目前水泥行业辊压机系统日趋成熟,为节能降耗,公司决定对水泥磨... 详细信息

我公司2500t/d生产线配套Ф4.2m×13.5m闭路水泥粉磨系统于2003年投产,至2009年水泥磨台时产量达到105t/h（P.O42.5级水泥,以下同）,工序电耗38kWh/t,大大超过了设计能力。目前水泥行业辊压机系统日趋成熟,为节能降耗,公司决定对水泥磨系统进行改造，增加HFCG160—140辊压机和HFV4000气流分级机组成闭路挤压联合粉磨系统。改造的目标是将台时产量提升到160t／h，电耗降为32kWh／t。

关键词：水泥磨系统技术改造辊压机 2500t/d生产线挤压联合粉磨系统水泥粉磨系统台时产量气流分级机

The complex effects of miR-146a in the pathogenesis of Alzheimer's disease

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Neural Regeneration Research 2025年第5期20卷 1309-1323页

作者： Yunfan long Jiajia liu Yu Wang Haidong Guo Guohong Cui Department of Neurology Shanghai No.9 People’s HospitalShanghai Jiaotong University School of MedicineShanghaiChina Academy of Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghaiChina School of Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghaiChina Department of Neurology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina

Alzheimer's disease is a neurodegenerative disorder characterized by cognitive dysfunction and behavioral *** plaques formed through the extracellular deposition of amyloid-βproteins,as well as neurofibrillary tangles formed by the intracellular deposition of hyperphosphorylated tau proteins,comprise two typical pathological features of Alzheimer's *** symptomatic treatment,there are no effective therapies for delaying Alzheimer's disease ***(miR)are small,non-coding RNAs that negatively regulate gene expression at the transcriptional and translational levels and play important roles in multiple physiological and pathological ***,miR-146a,a NF-κB-regulated gene,has been extensively implicated in the development of Alzheimer's disease through several *** has demonstrated substantial dysregulation of miR-146a both during the initial phases and throughout the progression of this *** R-146a is believed to reduce amyloid-βdeposition and tau protein hyperphosphorylation through the TLR/IRAK1/TRAF6 pathway;however,there is also evidence supporting that it can promote these processes through many other pathways,thus exacerbating the pathological manifestations of Alzheimer's *** has been widely reported that miR-146a mediates synaptic dysfunction,mitochondrial dysfunction,and neuronal death by targeting m RNAs encoding synapticrelated proteins,mitochondrial-related proteins,and membrane proteins,as well as other *** the impact on glial cells,miR-146a also exhibits differential *** one hand,it causes widespread and sustained inflammation through certain pathways,while on the other hand,it can reverse the polarization of astrocytes and microglia,alleviate neuroinflammation,and promote oligodendrocyte progenitor cell differentiation,thus maintaining the normal function of the myelin sheath and exerting a protective effect on *** this review,we provide a

关键词： Alzheimer's disease amyloid-β glial cells microRNAs miR-146a neuroinflammatory

中性粒细胞/淋巴细胞比值联合C反应蛋白/白蛋白比值对直肠癌术后吻合口瘘的预测价值

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海军军医大学学报 2022年第7期43卷 778-783页

作者：刘智龙杜晓辉中国人民解放军医学院研究生院北京100853 中国人民解放军总医院海南医院普通外科三亚572000 中国人民解放军总医院第一医学中心普通外科北京100853

目的探讨中性粒细胞/淋巴细胞比值(NLR)联合C反应蛋白/白蛋白比值(CAR)对直肠癌术后吻合口瘘的预测价值。方法回顾性分析2016年8月至2020年8月就诊于中国人民解放军总医院第一医学中心普通外科的187例直肠癌患者的临床资料,根据吻合口... 详细信息

目的探讨中性粒细胞/淋巴细胞比值(NLR)联合C反应蛋白/白蛋白比值(CAR)对直肠癌术后吻合口瘘的预测价值。方法回顾性分析2016年8月至2020年8月就诊于中国人民解放军总医院第一医学中心普通外科的187例直肠癌患者的临床资料,根据吻合口瘘发生与否分为吻合口瘘组(27例)和非吻合口瘘组(160例),比较两组在不同时间点的NLR、CAR差异。采用ROC曲线评价NLR、CAR及两者联合对直肠癌患者术后发生吻合口瘘的预测价值。采用多因素logistic回归分析直肠癌患者术后发生吻合口瘘的独立危险因素。结果吻合口瘘组直肠癌患者的NLR在术后第3、5天均高于非吻合口瘘组(P<0.05、P<0.001),CAR在术后第5天高于非吻合口瘘组(P<0.001)。ROC曲线分析显示,术后第5天的NLR联合CAR预测直肠癌患者术后发生吻合口瘘的AUC值为0.814,术后第3、5天NLR和术后第5天CAR单独预测吻合口瘘的AUC值分别为0.652、0.746和0.789,其中术后第5天NLR联合CAR的AUC值与术后第3天NLR的AUC值差异有统计学意义(P=0.03)。多因素logistic回归分析显示,饮酒史、术后第3天NLR≥5.610、术后第5天NLR≥11.259和术后第5天CAR≥2.447是直肠癌患者术后发生吻合口瘘的独立危险因素(P均<0.05)。结论术后第5天NLR联合CAR、术后第3天NLR、术后第5天NLR和术后第5天CAR均对直肠癌术后吻合口瘘有预测价值,其中术后第5天NLR联合CAR预测效果最佳。

关键词：中性粒细胞/淋巴细胞比值 C反应蛋白/白蛋白比值直肠肿瘤直肠切除术吻合口瘘

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地铁车辆设备运用与维护的博弈协作研究

交通运输系统工程与信息 2016年第5期16卷 21-26页

作者：王红刘志龙杜维鑫蒋祖华兰州交通大学机电工程学院兰州730070 上海交通大学机械与动力工程学院上海200240

在地铁车辆的维护决策过程中,公司各部门之间会存在隐形的利益竞争,为探讨这种隐形竞争对车辆设备预防性维护计划的影响.结合地铁车辆设备的动态衰退规律,采用非完美维护策略,建立了设备阶段性衰退的故障率函数模型.基于动态博弈理论,... 详细信息

在地铁车辆的维护决策过程中,公司各部门之间会存在隐形的利益竞争,为探讨这种隐形竞争对车辆设备预防性维护计划的影响.结合地铁车辆设备的动态衰退规律,采用非完美维护策略,建立了设备阶段性衰退的故障率函数模型.基于动态博弈理论,以运营部门与维护部门为博弈参与者,分别建立了运营优先和维护优先的Stackelberg博弈模型,并通过逆向归纳法求得博弈模型的纳什均衡解.结果表明:博弈方法在车辆设备维护决策中是可行且有效的,而且具有优先权的一方在维护决策中更有优势.与传统的优化方法比较,博弈方法的动态性和灵活性强,适应性更好,可为决策管理层提供重要的决策支持.

关键词：城市交通预防性维护博弈理论地铁车辆多阶段

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浮选颗粒与气泡间动态作用过程研究进展

中国有色金属学报 2022年第6期32卷 1796-1809页

作者：李美蒋昊刘志龙王宾滕鑫中南大学资源加工与生物工程学院长沙410083

颗粒与气泡间的相互作用对浮选过程有着至关重要的作用,二者能否发生有效黏附是决定浮选效率高低的关键。高速摄影技术能直接观察气泡−颗粒相互作用微观动态过程,具有可视化、直接化等优点,在颗粒−气泡碰撞、黏附、三相接触线(TPC)形成... 详细信息

颗粒与气泡间的相互作用对浮选过程有着至关重要的作用,二者能否发生有效黏附是决定浮选效率高低的关键。高速摄影技术能直接观察气泡−颗粒相互作用微观动态过程,具有可视化、直接化等优点,在颗粒−气泡碰撞、黏附、三相接触线(TPC)形成、脱附等方面应用广泛。本文总结了基于高速摄影技术探究颗粒−气泡相互作用的研究进展,颗粒与气泡间碰撞黏附过程研究主要采用颗粒沉降法,TPC的形成过程研究主要采用单气泡上升法,颗粒的脱附过程及黏附力的研究则主要采用单气泡驱动法。这些研究结果表明,颗粒的形状和粗糙度、气泡的大小和运动速度、表面活性剂浓度和类型、矿物疏水性等因素均会对颗粒−气泡间的碰撞−黏附−脱附过程产生重要影响。

关键词：碰撞黏附三相接触线矿物颗粒气泡高速摄影技术

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面板堆石坝筑坝材料动力特性试验研究

岩土力学 2009年第4期30卷 909-914页

作者：于玉贞刘治龙孙逊张丙印清华大学水沙科学与水利水电工程国家重点实验室北京100084

某抽水蓄能电站上水库主坝为沥青混凝土面板堆石坝,坝址区地形地质条件复杂且处于强震区,需研究其坝体和坝基料的动力特性。采用清华大学大型高压多功能静动三轴试验机,对坝基和主要坝体材料进行了动弹性模量与阻尼比试验和动残余变形... 详细信息

某抽水蓄能电站上水库主坝为沥青混凝土面板堆石坝,坝址区地形地质条件复杂且处于强震区,需研究其坝体和坝基料的动力特性。采用清华大学大型高压多功能静动三轴试验机,对坝基和主要坝体材料进行了动弹性模量与阻尼比试验和动残余变形试验。试验结果表明,与普通堆石料相比,软岩次堆石料和覆盖层料的动弹性模量较低且变形较大,但其动应力应变关系与动变形特性同样可以分别用修正的黏弹性动本构模型和残余变形经验公式进行描述。此外,根据动力试验结果初步论证了利用软岩和直接在覆盖层上筑坝的可行性。

关键词：面板堆石坝堆石料动力变形非线性黏弹性模型残余变形