氯化镓与α－干扰素对MGc80－3人胃癌细胞的协同抑制作用

以人胃癌细胞株为实验对象，采用ＭＴＴ显色法在体外观察了金属类抗癌药物氯化镓与人α－干扰素的协同抑制作用。结果显示：单独加入α－干扰素无明显抑制作用，而与氯化镓同时加入则有明显的抑制作用，尤其是当先用α－干扰素或氯化镓孵育７２ｈ后，再交换加药其协同抑制作用更大。提示：在应用氯化镓治疗胃癌病人时可同时合用干扰素治疗，或先用α－干扰素一段时间再用氯化镓治疗其疗效可能更好。     

Seabed scene simulation and its realization in extending Vega

Realistic simulation of underwater scene is always difficult because of the special and complex vision effects in underwater space. Seabed is an important part of underwater environment. This paper describes the methods for seabed scene simulation based on OpenGL. It includes construction of fluetuant terrain based on the random sinusoidal algorithm, simulation of seabed flicker effect by means of circular texture mapping and generation of turbidity effect by using fog techniques. For the application based on the leading high level 3D development environment-Vega, underwater scene simulation is still a difficulty since there is no module for it. Based on the analysis of Vega software and the research on seabed scene simulation methods, a Vega extending module named “Underwater Space” was created through developing module class and extending lynx interface. The module class was designed through developing DLL written in C . The Lynx was extended through developing keyword configure file, GUI configure file and lynx plug-in DLL. The problem that Vega can‘t simulate underwater space, is elementarily resolved. The results show that this module is efficient, easy using, and the seabed scene images am vivid.     

基于STEP应用协议—船舶管系（AP217）实施方法的研究

本文介绍了ＳＴＥＰ标准应用协议船舶管系（ＡＰ１２７）的基本框架及基于ＡＰ２１７的ＳＴＥＰ 文件前后处理器的设计原理,通过ＳＴＥＰ文件实现了三维管系图在 ＡｕｔｏＣＡＤ １２．０和 Ｐｒｏ／ ＥＮＧＩＮＥＥＲ两个不同ＣＡＤ系统之间的产品数据交换。     

LTE制式车载电台物理层与高层FAPI的研究

基于Femto Forum e Node B侧物理层与高层FAPI设计了终端侧(即车载电台)的物理层与高层FAPI,从而解耦物理层与高层,实现灵活性和通用性。     

基于Matlab的客车内摆门运动特性分析

建立客车内摆门的机构运动模型并推导出运动公式,运用Matlab软件得出内摆门滑槽滚轮中心的运动特性曲线,分析门滑槽及门内置铰链在不同位置对滚轮运动情况的影响。     

An exploratory investigation of the impact of ramp metering on driver acceleration behavior

Ramp metering has been proven as an effective freeway management strategy; however, the impact of ramp metering on drivers' acceleration behavior has not been fully investigated. A better understanding of acceleration behavior changes with ramp metering is critical to the adequate design of ramp metering facilities. In this study, drivers' speed and acceleration data were collected at two representative metered ramps in Los Angeles, California. The speed and acceleration profiles under meter-on and meter-off scenarios were compared. Statistical results demonstrated that ramp metering affects drivers' acceleration behavior at ramp acceleration lane. It was found that at the metered ramp with short existing acceleration length, the average acceleration rate from ramp meter stop bar to 500 ft downstream under meter-on scenario (4.72 ft./s²) is approximately 40% higher than when meter-off (3.18 ft./s²). The design of acceleration lane length for metered on-ramps should therefore take into account the potential impacts of ramp metering on driver acceleration behavior.     

变频调速技术在催化裂化装置机泵中的应用

简要介绍了变频调速技术,重点分析了与阀门调节相比,变频调速器的节能效果,比较了变频调速器应用前后机泵的运行周期和采用阀门调节与变频调速调节两种方式的节能效益,同时分析了控制方案的不同对节能效果的影响.     

换热站节能改造技术研究

对传统换热站的工作结构进行了简单分析,提出其存在的问题。针对这些问题进行节能技术改造,主要采用了两种技术措施:热用户侧供水温度气候补偿的优化调节,实现按需供热;依据室内采暖系统最佳循环流量确定最佳控制压差值,循环水泵进行变频调节,实现热用户侧的变流量运行。     

某高速公路隧道水害原因分析及治理

公路隧道运营过程中极易发生水害,针对宝牛高速公路某隧道的水害现象进行实地勘察和取样分析,综合提出了简单易行的解决方案,并取得了良好的治理效果。     

管状带式输送机在码头工程中的应用

介绍华能南通电厂直接输煤码头装卸工艺和输送系统的设计，分析管状带式输送机在长距离输送工程中的应用。