基于YT0-101总线的PC与单片机通信系统的研究

在对YT0—101通信接口电路及其通信协议研究的基础上，探讨了PC机与8051单片机之间进行etech—bus串口通信软件和硬件设计的原理及方法，给出了单片机与YTO—101总线的部分接口程序。     

终身寿险纯保费的精算方法

以终身寿险为例,运用概率论和数理统计方法对几种不同情况下趸交、年交和月交纯保费的精算方法进行详细剖析,并给出相应的计算公式。     

矿山排水泵站微机通信测控系统

针对目前平庄矿务局元宝山露 天矿的实际情况,利用ＭＣＳ－９６系列单片机成了矿山排水泵站微机通信测控系统。该系统由调度端和终端站组成,调度端与终端站之间的信息伟递采用无线通讯方式。且具有多机通信功能,故系统具有高可靠性和高性能价格比。     

Studies of a key protein in the mechanism of the excitation-contraction coupling process of frog skeletal muscle,using phenylglyoxal

The excitation-contraction (E-C) coupling process in single twitch fibres from frog toe muscle was inhibited selectively by phenylglyoxal (PGO), a specific guanidyl modifying reagent. A new protein (31.5 kDa), which has PGO-binding ability and seems to play a key role in the E-C coupling process, was solubilized from transverse tubule membrane-junctional sarcoplasmic reticulum complexes (TTM-JSR) of frog skeletal muscles, using¹⁴C-PGO. The monoclonal antibody against this protein applied extracellularly inhibited the E-C coupling process of the single fibres. This protein appears to constitute the very first step of input for E-C coupling. It is considered to behave as an indispensable part of an electrometer to measure membrane potentials. Therefore, the name electrometrin is suggested for the new protein.     

基于面向对象技术的继承机制剖析

OO技术用类来描述具有相同特征的一组对象，以继承作为共享机制，支持单一继承和多重继承．在面向对象的程序设计中，多继承使用频繁，但容易出现二性义问题．继承机制提供了规范化的结构体系和具有自然意义的重用方法，实现了代码和对象域的共享，从而使应用程序更容易维护、更新和升级．     

基于单片机的图像传输自动跟踪系统

应用89C51单片机设计了一种简单实用的控制电路，可以自动或手动控制定向通信天线进行360度旋转，跟踪发射机，实现高质量图像和语音信号传输．对其硬件电路组成和软件设计等方面也作了介绍．     

单片机89C52在多功能电度表中的应用研究

讨了一种以89C52单片机为核心构成的多功能电度表，它可以同时具有电能表、自动补偿、分时段测电能等多种功能，并以先进的LCD显示屏显示当前的功率因数、总电能值、所消耗的峰、谷、平电能值。     

一种还原糖自动检测系统

根据生化反应的基本原理,利用MCS-51单片机开发设计了一种还原糖自动检测系统.介绍了该系统的硬件和软件设计模式,其特点是结构简单、操作方便,是还原糖检测的一种新方法.     

Real time observation of the photocleavage of single DNA molecules

A method for real time observation of photo-cleavage of stratched λDNA at single molecular level by a fluorescent microscope coupled with CCD is developed.DNA molecules stained with YOYO-1 are stretched by the mo-lecular combing technique and fixed on a modified slide.Then the Process of Photocleavage and relaxation of DNA under radiation of blue light is observed.We speculate that the conformation change of stretched DNA and the effect of water are likely to facilitate the effect of YOYO photocleav-age DNA molecules.The photocleavage effect of YOYO for stretched DNA may be useful to study DNA elasticity,cancer research as well as the interaction between DNA and dyes.     

Abnormal piezoresponse behavior of Pb（Mg1／3Nb2／3）O3-30% PbTiO3 single crystal studied by high vacuum scanning force microscopy

The piezoresponse behavior dependence of the Pb(Mg1/3Nb2/3)O3-30%PbTi03 single crystal on the vacuum degree has been investigated by scanning force microscopy in the piezoresponse mode under high vacuum. Unusual piezoresponse behavior related to the screening charges compensation mechanism is observed on the (111) crystal face. The significant piezoresponse degradation behavior with low piezoresponse signal under high vacuum is attributed to the instability of the polarization state due to the insufficient compensation of the intrinsic screening charges for the polarization charges in PMN-30%PT single crystal. In contrast, the remarkable domain contrast of the sample at ambient pressure is owing to the dominant surface screening charges deriving from surface adsorption, which plays an important role in determining the stability of the domain behavior and in achieving the optimal properties.