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Acta Mechanica Sinica 2011年第2期27卷 200-207页

作者： ling li Ming-shun yuan State Key Laboratory of Hydroscience and Engineering Tsinghua University 100084 Beijing China

In this paper the effects of hydrophobic wall on skin-friction drag in the channel flow are investigated through large eddy simulation on the basis of weaklycompressible flow equations with the MacCormack’s scheme on collocated mesh in the FVM framework. The slip length model is adopted to describe the behavior of the slip velocities in the streamwise and spanwise directions at the interface between the hydrophobic wall and turbulent channel flow. Simulation results are presented by analyzing flow behaviors over hydrophobic wall with the Smagorinky subgrid-scale model and a dynamic model on computational meshes of different resolutions. Comparison and analysis are made on the distributions of timeaveraged velocity, velocity fluctuations, Reynolds stress as well as the skin-friction drag. Excellent agreement between the present study and previous results demonstrates the accuracy of the simple classical second-order scheme in representing turbulent vertox near hydrophobic wall. In addition, the relation of drag reduction efficiency versus time-averaged slip velocity is established. It is also foundthat the decrease of velocity gradient in the close wall region is responsible for the drag reduction. Considering its advantages of high calculation precision and efficiency, the present method has good prospect in its application to practical projects.

关键词： Wall turbulences · Large eddy simulation · Drag reduction · Hydrophobic wall · Weakly compressible flow

Effect of H_2O(g)Content in Circulating Flue Gas on Iron Ore Sintering with Flue Gas Recirculation

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Journal of Iron and Steel Research International 2015年第12期22卷 1107-1112页

作者： Xu-ling CHEN Yun-song HUANG Min GAN Xiao-hui FAN Zhi-yuan YU li-shun yuan School of Minerals Processing and Bioengineering Central South University

The influence of H2O （g） content in circulating flue gas on sintering was studied by simulating the flue gas circulating sintering. The results show that the burning speed of solid fuel and the heat transfer rate during sintering process are improved when the H2O （g） content increases from 0 to 6%, which accelerates the sintering speed. However, when the H2O （g） content exceeds 6 %, the over-wet zone in sinter bed is thickened, which deteriorates the permeability of sintering bed. In addition, the magnetite content in sinter increases, while the acicular calcium ferrite content decreases. Accordingly, the sinter yield and tumble index decrease with excessive H2O （g） content. To guarantee the yield and quality of sinter, the favourable H2O （g） content in circulating flue gas should be controlled to be less than 6%.

关键词： flue gas circulating sintering burning speed heat front flame front sinter

Structure Model of Granules for Sintering Mixtures

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Journal of Iron and Steel Research International 2014年第10期21卷 905-909页

作者： li-shun yuan Xiao-hui FAN Min GAN Gui-ming YANG Yi WANG School of Minerals Processing and Bioengineering Central South University

Structure model of granules, boundary value of nucleus and powder, and the relationship between granula- tion efficiency and boundary value were investigated. Granules of sintering mixtures are composed of adhesive powder and nucleus. In the mixtures, particles larger than 1.00 mm act as nucleus and particles smaller than 0.25 mm act as adhesive powder. Particles with size between 0.25--1.00 mm can be adhesive powder as well as nucleus depending on the granulation conditions. When the boundary value is close to 0.25 mm, the granulation efficiency is lower than 50%. When the boundary value is close to 1.00 mm, the granulation efficiency is above 90%. The boundary value is influenced by the iron ore type, granulation moisture, fineness of raw materials and burnt-lime activity. Good adhe- sive capability, suitable moisture content, appropriate particle size distribution and high burnt-lime activity make the boundary value move towards 1.00 mm and improve the granulation efficiency.

关键词： iron ore sintering structure model granulation

Insight Into the Separation-of-Variable Methods for the Closed-Form Solutions of Free Vibration of Rectangular Thin Plates

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 329-355页

作者： Yufeng Xing Ye yuan Gen li Institute of Solid Mechanics Beihang University(BUAA)Beijing100191China

The separation-of-variable(SOV)methods,such as the improved SOV method,the variational SOV method,and the extended SOV method,have been proposed by the present authors and coworkers to obtain the closed-form analytical solutions for free vibration and eigenbuckling of rectangular plates and circular cylindrical *** taking the free vibration of rectangular thin plates as an example,this work presents the theoretical framework of the SOV methods in an instructive way,and the bisection–based solution procedures for a group of nonlinear eigenvalue ***,the explicit equations of nodal lines of the SOV methods are presented,and the relations of nodal line patterns and frequency orders are *** is concluded that the highly accurate SOV methods have the same accuracy for all frequencies,the mode shapes about repeated frequencies can also be precisely captured,and the SOV methods do not have the problem of missing roots as well.

关键词： Separation-of-variable method Rayleigh quotient nodal line eigenvalue equation bisection method

维普期刊数据库评论

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维普期刊数据库

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福建柏无性系种实表型性状变异研究

宁夏农林科技 2015年第2期56卷 21-22页

作者：李渊顺福建省安溪白濑国有林场福建安溪362400

以从福建省、湖南省等地选择收集保存在安溪白濑林场种质库的福建柏为材料,研究福建柏优良无性系球果性状差异及相关性,结果表明：不同无性系个体之间的球果形态存在显著差异,差异最大的是单果重,0.8~6.7 g,平均2.56 g,变异系数达31.59%... 详细信息

以从福建省、湖南省等地选择收集保存在安溪白濑林场种质库的福建柏为材料,研究福建柏优良无性系球果性状差异及相关性,结果表明：不同无性系个体之间的球果形态存在显著差异,差异最大的是单果重,0.8~6.7 g,平均2.56 g,变异系数达31.59%;球果长、球果宽及球果长宽比的变异系数较小,分别为12.73%、11.58%及11.28%;相关分析结果表明,果长与果宽、果长/果宽、果长×果宽、单果重及百粒重均呈极显著相关性,这为开展种实性状的间接选择提供了物质基础及科学依据。

关键词：福建柏无性系种实性状遗传变异

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桉树福建柏混交造林效果分析

福建林业科技 2016年第1期43卷 57-60页

作者：李渊顺福建省安溪白濑国有林场福建安溪362411

为了探索闽南地区桉树人工林混交造林模式,2010年在福建省安溪白赖国有林场开展了桉树福建柏混交(混交比例为2桉∶8福建柏)造林试验,并与桉树纯林、福建柏纯林对比。5 a的试验结果表明:混交林中桉树胸径、树高、材积的生长量都大于桉树... 详细信息

为了探索闽南地区桉树人工林混交造林模式,2010年在福建省安溪白赖国有林场开展了桉树福建柏混交(混交比例为2桉∶8福建柏)造林试验,并与桉树纯林、福建柏纯林对比。5 a的试验结果表明:混交林中桉树胸径、树高、材积的生长量都大于桉树纯林,增益可达39.2%、16.1%、109.5%以上;混交林中福建柏的平均胸径、平均树高、单株材积生长分别比纯林减少了25.9%、10.7%、46.8%,但树高生长也超过速丰林标准的14.7%。说明桉树与福建柏混交存在着生长相互促进作用,是种间关系较为协调并且具有较高生产力的混交模式,可以在生产上推广应用。

关键词：桉树福建柏混交林生长效果

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闽南桉树速丰林的二代更新培育技术

林业勘察设计 2007年第2期27卷 106-108页

作者：李渊顺安溪白濑国有林场福建安溪362400

随着桉树速丰林的迅速发展,如何更新成为桉树栽培的新问题。桉树萌芽林生长迅速,采取萌芽更新方式在生长、投资、收益各方面都具有明显优势,在生产上具有推广应用价值。桉树萌芽林培育过程中要注意施肥、培土等技术措施,同时要注意病虫... 详细信息

随着桉树速丰林的迅速发展,如何更新成为桉树栽培的新问题。桉树萌芽林生长迅速,采取萌芽更新方式在生长、投资、收益各方面都具有明显优势,在生产上具有推广应用价值。桉树萌芽林培育过程中要注意施肥、培土等技术措施,同时要注意病虫害的防治。

关键词：桉树二代更新培育技术

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng li Meifeng Cai Shengjun Miao yuan li Yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

Peripheral mitochondrial DNA as a neuroinflammatory biomarker for major depressive disorder

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Neural Regeneration Research 2025年第6期20卷 1541-1554页

作者： Jinmei Ye Cong Duan Jiaxin Han Jinrong Chen Ning Sun yuan li Tifei yuan Daihui Peng Division of Mood Disorder Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry First Hospital of Shanxi Medical UniversityTaiyuanShanxi ProvinceChina Shanghai Key Laboratory of Psychotic Disorders Brain Health InstituteNational Center for Mental DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina

In the pathogenesis of major depressive disorder, chronic stress-related neuroinflammation hinders favorable prognosis and antidepressant response. Mitochondrial DNA may be an inflammatory trigger, after its release from stress-induced dysfunctional central nervous system mitochondria into peripheral circulation. This evidence supports the potential use of peripheral mitochondrial DNA as a neuroinflammatory biomarker for the diagnosis and treatment of major depressive disorder. Herein, we critically review the neuroinflammation theory in major depressive disorder, providing compelling evidence that mitochondrial DNA release acts as a critical biological substrate, and that it constitutes the neuroinflammatory disease pathway. After its release, mitochondrial DNA can be carried in the exosomes and transported to extracellular spaces in the central nervous system and peripheral circulation. Detectable exosomes render encaged mitochondrial DNA relatively stable. This mitochondrial DNA in peripheral circulation can thus be directly detected in clinical practice. These characteristics illustrate the potential for mitochondrial DNA to serve as an innovative clinical biomarker and molecular treatment target for major depressive disorder. This review also highlights the future potential value of clinical applications combining mitochondrial DNA with a panel of other biomarkers, to improve diagnostic precision in major depressive disorder.

关键词： biomarker cytokine exosomes inflammasome major depressive disorder microglia mitochondrial DNA mitochondrial dysfunction neuroinflammation Toll-like receptor

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芦山地震中宝兴卫生应急救援的实施与探索

中国急救复苏与灾害医学杂志 2013年第7期8卷 593-594页

作者：李铭李顺源黄玲四川省雅安市宝兴县卫生局 625700 雅安职业技术学院药学检验系

2013年4月20日雅安市芦山县发生7．0级强烈地震，宝兴县是极重灾区之一。地震发生当天，宝兴县县级医疗机构（包括宝兴县人民医院和宝兴县中医医院）立即将医务人员分为外科组、内科组和护理组，建立帐篷野战医院，整个救灾期间治疗7404... 详细信息

2013年4月20日雅安市芦山县发生7．0级强烈地震，宝兴县是极重灾区之一。地震发生当天，宝兴县县级医疗机构（包括宝兴县人民医院和宝兴县中医医院）立即将医务人员分为外科组、内科组和护理组，建立帐篷野战医院，整个救灾期间治疗74040例，其中地震伤员5807例，在道路中断时，通过徒步接力转运伤员。无一例伤员因救治不及时而发生死亡或延误病情。及早建立县市省三级转运救治体系，确保了震后72h内全县55个村医疗救援全覆盖。每个行政村均设立了医疗防疫点，开展防疫，应急接种甲肝疫苗、麻腮风等疫苗，开展爱国卫生运动。请专业的消杀公司。笔者认为迫切需要建立和完善院外医疗卫生救援工作模式，心理干预十分重要。

关键词：地震救灾医学救援