Effect of antioxidant contained in poly(ethylene glycol) on cell fusion

The effect of antioxidants contained in poly(ethylene glycol) (PEG) on cell fusion was studied using L929 cells in the monolayer state. Hydroquinone monomethyl ether (HQME), 2-mercaptobenzimidazole (MB), butyl hydroxyanisole (BHA) and 2,6-di-(t-butyl)-4-methylphenol (BHT) were chosen from the antioxidants that have currently been used to protect commercially available PEG from oxidation. Cell culture was conducted in 40% w/w aqueous solution of PEG with a molecular weight of 3000 in the presence of different concentrations of antioxidants. BHA clearly enhanced membrane fusion of L929 cells with increasing concentration in PEG solution, whereas HQME, MB and BHT had no significant effect on cell fusion. The enhancement of cell fusion by BHA might be ascribed to balanced hydrophobicity and high water solubility in comparison with the other three antioxidants.     

A demonstrative study for the wind and solar hybrid power system

In March 1995, a small scale wind and solar hybrid power system was installed at Ashikaga Institute of Technology. Until now, the authors have acquired the data of the output of the hybrid power plant along with wind speed, wind direction, and the solar radiation, in order to demonstrate a complementary relationship between solar energy and wind energy.After nine months operation of the system, the authors confirmed that there exists a complementary relationship between solar energy and wind energy. We also found, however, that the power output by wind does not have much prospect compared to that by solar cell especially in summer season in Ashikaga area.     

光纤式机器人触觉传感器静态特性的实验研究

介绍了一种光纤式机器人触觉传感器，分析了这种传感器的静态特性，并通过理论分析和实验研究提出了一种消除干扰的方法。实验结果证明，传感器的最大绝对误差为０．０５３ｋｇ，相对误差为０．６２％。     

强度型光纤传感器的信号检测系统

本文阐述了一种可提高强度型光纤传感器测量精度的检测系统。该系统利用同一检测电路交替检测信号、参考通道的输出信号，并将信号、参考两通道的检测结果相除，从而消除了因发光二极管光源波动及检测电路系统不稳定所带来的误差。采用同步相关技术抑制了噪声，提高了输出信噪比。实验证明，当时间常数ＲＣ为０．０５Ｓ时，采用该检测系统可获得优于千分之一的零点稳定性和优于２×１０３的输出信噪比。     

火炸药包装用纸桶的研究

简述了我国火炸药包装的现状。介绍了火炸药用纸桶包装的研究情况，其中，较详细叙述了纸桶的力学性能、运输和使用试验结果，分析了纸桶包装火炸药的社会、经济效益。     

光盘用光学头物镜性能的综合评估

论述了采用波象差均方根、点扩展函数、光学传递函数对高次旋转对称非球面光学头物镜性能进行综合评估的方法。作者在正则坐标理论基础〔１〕上编制了光学头物镜性能综合评估软件。给出了评估实例。     

ATM交换机的硬件体系结构探讨

本文首先对ＡＴＭ的背景作了一个简单的介绍，接着阐述了ＡＴＭ和ＡＴＭ交换机的主要原理和技术，然后从硬件系结构的角度具体地分析了一种实验ＡＴＭ交换机是怎样ＡＴＭ技术的详细方法。     

智能温湿度测控仪

本文提出一种利用MCS-51系列单片机实现温湿度自动检测和控制的智能仪表,文中对仪器的工作原理、硬件组成和软件设计作了较为详细的介绍。     

MICROSTRUCTURE AND FATIGUE PROPERTIES OF A WELDED DUPLEX STAINLESS STEEL

Abstract— In response to the increasing structural applications in duplex steels for welded structures, fatigue behaviour of a SAF 2304 grade duplex stainless steel was investigated, considering both the base metal and GTAW welded joints. Fatigue curves and fatigue limits under rotary bending fatigue were obtained. The study focused attention on the microstructural features of fatigue crack propagation of the two series of experiments, thereby permitting an evaluation of the tortuous crack path of welded joints and the mechanisms related to threshold microstructural barriers.     

岩心PI值试验研究及应用

主要论述了在多功能采油化学用剂评价仪上进行的岩心ＰＩ值试验的步骤，现象及结论。重点考察了岩心ＰＩ值与渗透率、流量及注入截面面积的关系；平行管岩心复合ＰＩ值和其中单管岩心ＰＩ值的关系。