含淀粉聚乙烯膜的时控光降解研究

使用复合光降解剂，得到了可光降解的生物降解膜。对膜的光降解进行了考察，并对影响光降解的因素进行了讨论，结果表明，我们所制得的膜是一种较好的时控光降解膜。     

Pure perceptual-based sequence learning.

Learning a sequence of target locations when the sequence is uncorrelated with a sequence of responses and target location is not the response dimension (pure perceptual-based sequence learning) was examined. Using probabilistic sequences of target locations, the author shows that such learning can be implicit, is unaffected by distance between target locations, and is mostly limited to first-order transition probabilities. Moreover, the mechanism underlying learning affords processing of information at anticipated target locations and appears to be attention based. Implications for hypotheses of implicit sequence learning are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

On using peak amplitude and rise time for AE source characterization

Acoustic Emission (AE) signals, which are electrical version of acoustic emissions, are usually analysed using a set of signal parameters. The major objective of signal analysis is to study the characteristics of the sources of emissions. Peak amplitude(P _a ) and rise time(R _t ) are two such parameters used for source characterization. In this paper, we theoretically investigate the efficiency ofP _a andR _t to classify and characterize AE sources by modelling the input stress pulse and transducer. Analytical expressions obtained forP _a andR _t clearly indicate their use and efficiency for source characterization. It is believed that these results may be of use to investigators in areas like control systems and signal processing also     

某实时控制系统在QNX上的具体实现

简述了QNX实时操作系统的特点，详细介绍了一实时控制系统在QNX4．25上的具体实现。     

单光子时间分辨在线谱仪系统中的接口电路

本文介绍单光子时间分辨在线谱仪系统中的多道分析器与IBM PC/XT微型计算机接口的工作原理及控制程序。     

Lyapunov‐stable discrete‐time model reference adaptive control

Discrete‐time model reference adaptive control (MRAC) is considered with both least squares and projection algorithm parameter identification. For both cases complete Lyapunov proofs are given for stability and convergence. The results extend the approach of Johansson (Int. J. Control 1989; 50 (3):859–869) to include Lyapunov stability for MRAC when the normalized projection algorithm is used for parameter identification. Copyright © 2005 John Wiley & Sons, Ltd.     

电转化法转化钝顶螺旋藻转化条件的研究

确定了电转化法转化钝项螺旋藻S6-4的转化条件。无论受体是藻丝还是单细胞／藻丝段，钝项螺旋藻S6-4在对数生长期内，半致死电场强度无显著差别。实验表明以对数中期的螺旋藻用于转化为宜。当脉冲时间是5．0ms时，藻丝受体和单细胞／藻丝段受体的半致死电场强度分别是3．75—5．0kV／cm和3．1—4．4kV／cm，而电击缓冲液分别是1．0mmol／L HEPES(pH7．5)缓冲液和含有0．5mol／L蔗糖的1．0mmol／L HEP—ES(pH7．5)缓冲液。本文的研究结果为螺旋藻转化及外源基因表达提供了实验基础。     

紧凑型FLC光纤PDL模块

描述了紧凑型FLC（铁电液晶）光纤PDL（光子延迟线）模块的结构和运转特性；分析了插入损失；提出多信道运转时依赖于波长的设计方案。     

液位定量式灌装机的灌装精度概率模型与可靠度计算模型

描述了控制液位定量式灌装机的灌装时间与灌装精度的关系，推导出实际灌装时间的理论计算公式。针对实际存在的各种随机变量对灌装时间的影响，建立了灌装时间的概率模型，提出基于灌装时间随机误差的灌状精度以及灌装精度可靠度概念，并相应建立出灌装精度概率模型与灌装精度可靠度计算模型。