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能量转换原理研究(续)

阴山学刊（自然科学版） 2018年第3期32卷 160-162页

作者：杨泽民杨文婷俞杨阿拉善职业技术学院内蒙古阿拉善750300 包头师范学院内蒙古包头014030 上海交通大学上海200240

本文继续利用人自身活动劳动做功过程中的能量释放传递产生力做功转换获得能量的事实.证明引力场、热力场、电场、磁场能量转换原理.

关键词：机械能量转换原理引力场热力场电场磁场能量转换原理

集束化护理应用于有创-无创序贯机械通气治疗慢性阻塞性肺疾病急性加重期疗效评价

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转化医学电子杂志 2016年第12期3卷 71-72页

作者：周月饶雨婷韩漾江苏省无锡市惠山区人民医院内科江苏无锡214000

目的:探究针对序贯机械通气慢性阻塞性患者给予集束化护理的临床疗效.方法:选取2013-10/2016-05江苏省无锡市惠山区人民医院收治并进行序贯机械通气的慢性阻塞性肺疾病患者100例作为研究对象,随机分为试验组(n=50)和对照组(n=50).对照... 详细信息

目的:探究针对序贯机械通气慢性阻塞性患者给予集束化护理的临床疗效.方法:选取2013-10/2016-05江苏省无锡市惠山区人民医院收治并进行序贯机械通气的慢性阻塞性肺疾病患者100例作为研究对象,随机分为试验组(n=50)和对照组(n=50).对照组患者给予常规的临床护理手段,试验组患者给予集束化护理进行干预.比较两组的临床疗效.结果:试验组患者护理后出现插管脱落、局灶炎症、肺部感染等不良状况的发生率均低于对照组,差异有统计学意义(P<0.05);护理后,试验组患者在心理状况、生活质量、疾病恢复等方面的评分均优于对照组,差异有统计学意义(P<0.05).结论:针对慢性阻塞性肺疾病急性加重期患者,在序贯机械通气期间给予集束化护理可有效降低患者的不良状况发生率,改善患者的生存质量.

关键词：集束化护理慢性阻塞性肺疾病序贯机械通气临床疗效

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声自导鱼雷末端制导过程的混沌现象研究

系统仿真学报 2004年第1期16卷 140-141,145页

作者：笪良龙卢晓亭李玉阳韩梅海军潜艇学院青岛266071

根据声自导鱼雷末端制导的非线性过程,建立了声自导鱼雷末端制导的相空间方程和Lyapunov特征指数,其研究结果表明声自导鱼雷末端制导过程存在典型的混沌现象,混沌特征主要与参数P和参数K有关;相关结论对声自导鱼雷的作战使用有着极其重... 详细信息

根据声自导鱼雷末端制导的非线性过程,建立了声自导鱼雷末端制导的相空间方程和Lyapunov特征指数,其研究结果表明声自导鱼雷末端制导过程存在典型的混沌现象,混沌特征主要与参数P和参数K有关;相关结论对声自导鱼雷的作战使用有着极其重要作用,同时将对声自导鱼雷的设计也有一定的指导意义。

关键词：混沌 Lyapunov指数自导鱼雷末端制导

Simulation procedure of unconfined seepage with an inner seepage face in a heterogeneous field

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Science China(Physics,Mechanics & Astronomy) 2013年第6期56卷 1139-1147页

作者： WU MengXi yang LianZhi yu ting Institute of Mechanics Chinese Academy of Sciences Hydrochina Chengdu Engineering Corporation

An inner seepage face phenomenon is given and a numerical simulation procedure has been *** may appear at the interface of two materials when an unconfined seepage flows from a porous media to a coarser porous media with a higher *** and divergent problems may arise both in a saturated-only and in a variably saturated analysis while an inner seepage face is not simulated with a special *** position of the seepage face is determined during the nonlinear iteration process and the flux of the inner seepage face nodes is transferred to the downstream side *** and efficiency of the procedure are illustrated by the simulation of two dimensional steady state seepage examples of heterogeneous zoned dams which is usually used to validate *** analysis of a three-dimensional earth core rockfill dam is also presented *** procedure can also be applied to general transient seepage problems.

关键词： unconfined seepage inner seepage face finite element method free surface

Case studies of EUV cyclones and their associated magnetic fields

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Research in Astronomy and Astrophysics 2015年第9期15卷 1525-1536页

作者： Xin-ting yu Jun Zhang ting Li Shu-Hong yang Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences School of Earth and Space Science University of Science and Technology of China

EUV cyclones are rotating structures in the solar corona, and they are usually rooted in the underlying rotating network magnetic fields in the photosphere. However, their connection with the surrounding magnetic fields remains unknown. Here we report an observational study of four typical cyclones which are rooted in different kinds of magnetic fields. We use Solar Dynamics Observatory^Atmospheric Imaging Assembly data to investigate the rotation of EUV features in cyclones and Helioseismic and Magnetic Imager data to study the associated magnetic fields. The results show that, （1） an EUV cyclone rooted in a sunspot rotates with the photo- spheric magnetic field; （2） two EUV cyclones in two faculae of an active region are connected to the same sunspot of the active region but rotate oppositely; （3） an EUV cyclone is rooted in a coronal hole with weak open magnetic fields; （4） a pair of con- jugated cyclones is rooted in magnetic fields that have opposite polarity with opposite directions of rotation. The differences in the spatial extent of a cyclone, characteristics of its rotation and underlying fields indicate that cyclones are ubiquitous over the solar atmosphere and that the magnetic structures relevant to the cyclones are more complicated than expected.

关键词： Sun: activity -- Sun: corona -- Sun: magnetic fields -- Sun: photosphere

Exploiting Internal Parallelism of SSD for Hash Join

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Chinese Journal of Electronics 2019年第5期28卷 889-898页

作者： yang Lianghuai ZHANG ting FAN yulei GONG Weihua yu Jian School of Computer Science and Technology Zhejiang University of Technology School of Computing and Mathematical Sciences Auckland University of Technology

By regarding a Solid-state drive(SSD) as a black box and observing its external behavior instead of peeping into its internal details, we investigate how the factors of I/O granularity and I/O queue depth influence the throughput of an SSD through a series of experiments and relate to the internal parallelism of an SSD, and then propose the concept of Combination equivalence class(CEC) as the set of combination pairs of these two factors.A novel buffer allocation scheme for hash join over SSDs is invented by taking both factors into account. Extensive experiments demonstrate the effectiveness of our scheme.

关键词： Hash join Internal parallelism I/O granularity Queue depth Solid state drive

Bipartite consensus of higher-order multi-agent systems based on event-triggered control and signed network

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Journal of Control and Decision 2021年第2期8卷 233-242页

作者： Mei yu Wenyu He ting yang School of Control and Computer Engineering North China Electric Power UniversityBeijing102206People’s Republic of China

Consensus of higher-order multi-agent systems based on event-triggered control and signed network is studied in this paper,where signed multi-agent systems control protocol takes hostile relations into account between different ***-triggered protocol for the second-order signed multi-agent systems is *** results are obtained for high-order signed multiagent *** addition,for the two control strategies proposed in this paper,it is proved that Zeno behaviours do not ***,simulation examples are presented to verify the correctness of the results.

关键词： Multi-agent systems signed network higher-order event-triggered

SiC nanowire-based SU-8 with enhanced mechanical properties for MEMS structural layer design

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Nanotechnology and Precision Engineering 2019年第4期2卷 169-176页

作者： yu yang Liyan Lai Guifu Ding ting Chen National Key Laboratory of Science and Technology on Micro/Nano Fabrication Shanghai Jiao Tong University

In addition to being used for pattern transfer,the negative photoresist SU-8 iswidely used as a structural material in microelectromechanical systems(MEMS).Due to its good photopatternability,SU-8 has lower manufacturing costs than many other materials,but its mechanical properties are relatively weak to some extent,which limits its *** mechanical properties of epoxy-like SU-8 can be enhanced by addingmicro-or nano-fillers such as carbon nanotube,clay,and SiC nanowire,which have superior elastic *** this study,SiC nanowires were used to improve the mechanical properties of SU-8 while the SU-8 retains its *** SiC nanowires were uniformly dispersed in SU-8 by stirring and ***-8 materials with different SiC nanowire contents were fabricated into dog bone samples by *** elastic modulus,storage modulus,and damping factor of the samples were measured by the Dynamic mechanical analysis(DMA)*** experiment result shows that the rigidity and toughness increased,and the damping *** 2 wt%SiC nanowires-reinforced SU-8 had a 73.88%increase in elastic modulus and a 103.4%increase in elongation at ***,a spring component made by SiC-doped SU-8 could withstand greater *** SiC nanowires-reinforced SU-8 has the potential tomeet higher requirements in the design andmanufacture of MEMS and greatly reduce the manufacturing costs of MEMS devices.

关键词： SU-8 SiC nanowires Elastic modulus Dynamic mechanical analysis(DMA)

DNA methylation and demethylation link the properties of mesenchymal stem cells: Regeneration and immunomodulation

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World Journal of Stem Cells 2020年第5期12卷 351-358页

作者： Tian-Yi Xin ting-ting yu Rui-Li yang Department of Orthodontics Peking University School and Hospital of StomatologyNational Engineering Laboratory for Digital and Material Technology of StomatologyBeijing Key Laboratory of Digital StomatologyBeijing 100081China

Mesenchymal stem cells(MSCs)are a heterogeneous population that can be isolated from various tissues,including bone marrow,adipose tissue,umbilical cord blood,and craniofacial *** have attracted increasingly more attention over the years due to their regenerative capacity and function in *** foundation of tissue regeneration is the potential of cells to differentiate into multiple cell lineages and give rise to multiple tissue *** addition,the immunoregulatory function of MSCs has provided insights into therapeutic treatments for immune-mediated *** methylation and demethylation are important epigenetic mechanisms that have been shown to modulate embryonic stem cell maintenance,proliferation,differentiation and apoptosis by activating or suppressing a number of *** most studies,DNA hypermethylation is associated with gene suppression,while hypomethylation or demethylation is associated with gene *** dynamic balance of DNA methylation and demethylation is required for normal mammalian development and inhibits the onset of abnormal ***,the exact role of DNA methylation and demethylation in MSC-based tissue regeneration and immunomodulation requires further *** this review,we discuss how DNA methylation and demethylation function in multi-lineage cell differentiation and immunomodulation of MSCs based on previously published ***,we discuss the implications of the role of DNA methylation and demethylation in MSCs for the treatment of metabolic or immune-related diseases.

关键词： Mesenchymal stem cells DNA methylation and demethylation Multi-lineage differentiation Regeneration Immunomodulation Immune disease