THE CHANGES OF PERIPHERAL BLOOD T LYMPHOCYTE SUBSETS IN PATIENTS WITH PRIMARY HEPATIC CARCINOMA BOTH PRE-TACE AND POST-TACE

Ｔｈｅｂｏｄｙ’ｓａｎｔｉ ｔｕｍｏｒｉｍｍｕｎｏｒｅａｃｔｉｏｎｉｓｍａ ｉｎｌｙｔｈｅｃｅｌｌｕｌａｒｉｍｍｕｎｉｔｙ .Ｔｌｙｍｐｈｏｃｙｔｅｓｕｂｓｅｔｉｓｔｉｇｈｔｌｙｒｅｌａｔｅｄｔｏｉｔ .Ｒｅｃｅｎｔｓｔｕｄｉｅｓｈａｖｅｄｅｍｏｎｓｔｒａｔ ｅｄｔｈａｔｍａｎｙｋｉｎｄｓｏｆｍａｌｉｇｎａｎｔｔｕｍｏｒｐａｔｉｅｎｔｓｈａｖｅｔｈｅａｂｎｏｒｍａｌｃｏｎｄｉｔｉｏｎｏｆＴｌｙｍｐｈｏｃｙｔｅｓｕｂｓｅｔａｎｄｌｏｐｓｉｄｅｄｄｅｖｅｌｏｐｍｅｎｔ.Ｗｅｈａｖｅｏｂｓｅｒｖｅｄ 4 5 ｐａ …     

系杆拱桥吊杆评价方法应用研究

吊杆是系杆拱桥的重要组成部分和传力构件, 一旦发生病害将严重影响桥梁结构的安全和使用寿命。在系杆拱桥吊杆评估过程中,如何采取有效的方法对损坏的系杆拱桥进行分析和评价,是关系到工程质量和结构安全的至关重要的环节。而作为系杆拱桥吊杆更换的一个重要组成部分,正确地测试吊杆索力是吊杆顺利更换的保证。鉴于此,结合工程实例,介绍了基于频率法的拱桥吊杆索力测试方法,并对索力分布进行分析,判断其均匀程度及各根吊杆的承载力是否满足要求。     

Computational method for prestress developing of tensile cable-net structures

The prestress developing of tensile cable-net structures is a state transforming process from the initial unstressed state to the final prestressed state, and it is rather complicated because the elastic deformation is normally coupled with the kinematic mechanism movement. Firstly, the basic equations of prestress developing by moving boundary joint are derived from the total potential energy equation. Secondly, the presumed initial tension is proposed to impose into the elements and avoid the singularity of global stiffness matrix. And the self-stress mode which is calculated from the equilibrium matrix with singular value decomposition is employed as basically presumed initial tension. By applying boundary movement increment, an iterative computation is developed to calculate the updating geometric configuration and tension evolution. Finally, the MATLAB program is coded from the presented method, and numerical examples indicate that this computational method is effective and has theoretical significance and valuable guide to design and construction of tensile cable-net structure.     

乳化沥青稀浆封层材料的试验研究

详细的介绍了采用阳离子乳化沥青配制稀浆封层材料的标准 ,并对应进行的一系列常规试验、测试容许数据等进行了说明     

机械式恒张力架线研究

提出一种完全机械式的恒张力架线施工方法,可以作为进口恒张力架线车的补充方案,应用在某些对建设施工成本很敏感且对张力精度要求不是很高的场合。     

近海平台T型管状接头极限分析与实验研究

本文采用薄壳极限分析的一般变分原理,推导了在支管轴向受拉与受压下T 型管接头的极限载荷上限值表达式,利用非线性规划求出了最优极限载荷上限值。在理论分析的同时,还进行了钢质模型的实验研究,为理论分析的假设提供了基础。实测数据表明,计算值与试验值相当符合。     

中承式拱桥吊索损伤对吊索系静张力的影响

基于中承式拱桥的有限元建模,考虑到吊索损伤对吊索拉伸刚度的影响,运用一阶矩阵摄动理论,采用刚性拱模型,研究了中承式拱桥吊索损伤对吊索系静张力的影响,导出了吊索系张力矢量因损伤变化的表达式,并用工程实例进行计算机仿真研究。研究结果表明:吊索的损伤会引起吊索系静张力的重新分布,即引起损伤吊索自身静张力的减小及邻近吊索静张力增大,随着损伤的增大,这种变化也逐渐增大;损伤大小与吊索静张力的变化呈近似的线性关系。这一结果对中承式拱桥吊索损伤的检测有实际参考价值。     

西部省区公路网规划的主要问题及对策

结合东部公路网规划经验，分析讨论西部区域网规划的主要问题，提出西部区域网规划的参考方法。     

Outsourced probe data effectiveness on signalized arterials*

ABSTRACT

This paper presents results of an I-95 Corridor Coalition sponsored project to assess the ability of outsourced vehicle probe data to provide accurate travel time on signalized roadways for the purposes of real-time operations as well as performance measures. The quality of outsourced probe data on freeways has led many departments of transportation to consider such data for arterial performance monitoring. From April 2013 through June of 2014, the University of Maryland Center for Advanced Transportation Technology gathered travel times from several arterial corridors within the mid-Atlantic region using Bluetooth traffic monitoring (BTM) equipment, and compared these travel times with the data reported to the I95 Vehicle Probe Project (VPP) from an outsourced probe data vendor. The analysis consisted of several methodologies: (1) a traditional analysis that used precision and bias speed metrics; (2) a slowdown analysis that quantified the percentage of significant traffic disruptions accurately captured in the VPP data; (3) a sampled distribution method that uses overlay methods to enhance and analyze recurring congestion patterns. (4) Last, the BTM and VPP data from each 24-hour period of data collection were reviewed by the research team to assess the extent to which VPP captured the nature of the traffic flow. Based on the analysis, probe data is recommended only on arterial roadways with signal densities (measured in signals per mile) up to one, and it should be tested and used with caution for signal densities between one and two, and is not recommended when signal density exceeds two.     

作业型载人潜水器通信中继浮标收放绞车的设计研究

介绍了一种适用于作业型载人潜水器收放通信中继浮标的绞车的装置组成、工作原理、驱动参数计算及其液压控制系统。该收放绞车实现了自动排缆,主动放缆,张力保护,被动放缆,承重头锁紧及应急切割功能,确保了在释放回收通信中继浮标过程中载人潜水器的姿态及安全,从而保证载人潜水器在水下的作业安全性和可靠性。