一种单片机控制的指令转换器的设计

采用89C51单片机，串口扩展芯片8251、中断扩展芯片8259等器件设计了一种指令格式转换器。     

用6805实现宽范围高精度频率测量

采用ＭＣ６８０５系列单片机并充分利用其定时器，选择测频法或测周法，可以实现定范围、高精度频率测量。此种方法只占用１个内部定时器，节省了硬件开销。     

氦氖激光对人胚腱细胞生长分泌的影响

目的 阐明氦氖激光促进人胚腱细胞增殖及分泌胶原的机制。方法 将传代培养的人胚腱细胞分为对照组、照射1日组、照射3日组及照射5日组。在氦氖激光照射的不同时相点，分别测定细胞DNA含量，cAMP水平及胶原分泌量。结果 在氦氖激光作用早期（1－3日），细胞cAMP水平与DNA合成均呈明显升高（P＜0.05)，细胞内信使物质合成及细胞增殖加快，但胶原分泌无变化，而在氦氖激光作用晚期（3－5日），当cAMP水平及DNA合成都不再改变时，腱细胞分泌胶原量显著增加（P＜0.01)。结论 氦氖激光可能通过作用于cAMP蛋白激酶A信号转导系统，从而调控人胚腱细胞增殖及胶原分泌。提示临床应用氛氖激光促进肌腱愈合宜从早期开始，并且需要照射足够长的时间。     

编码解码芯片HD3-6408-9及其应用

编码解码芯片HD3 64 0 8 9是一种高性能的CMOS器件。这种大规模芯片主要由编码器和解码器两部分组成。在数据传输应用中 ,采用两个独立的单片机系统 ,利用编码解码芯片 (HD3 64 0 8 9)组成数字信号的接收、发送及显示部分来完成数据传输功能     

Multi-functional biochip for medical diagnostics and pathogen detection

We describe a multi-functional biochip (MFB), which uses two different types of bioreceptors, including nucleic acid and antibody probes, on a single platform. The multi-functional capability of the MFB device for biomedical diagnostics is illustrated by measurements of DNA probes specific to gene fragments of Bacillus anthracis and antibody probes targeted to Escherichia coli. Calibration curves for monitoring pathogenic species using antibody probes against E. coli and DNA probes for B. anthracis illustrate the capability of the device for medical diagnostics and for quantitative detection of pathogenic agents.     

基于Lab VIEW的小型汽油机磁电机点火提前角的测量

本文介绍了磁电机点火系统的点火提前角测量原理。对点火系统的点火信号和触发信号进行采集、调理，再用单片机进行处理，最后用LabVIEW进行点火提前角数据存储和显示。     

台达现场总线产品在中央空调系统的应用

本文通过案例详尽论述台达DeviceNet现场总线产品在中央空调系统的工程设计技术，展示出台达DeviceNet现场总线产品的系统集成优势。     

Interfacial hybridization kinetics of oligonucleotides immobilized onto fused silica surfaces

Fused silica optical fibers have been used in an intrinsic mode optical configuration as biosensors for fluorescence based detection of hybridization of nucleic acids. In this work, the kinetics of hybridization of single-stranded oligonucleotides that were covalently immobilized were studied. The probe DNA was dT₂₀, and the target was Fluorescein-labeled non-complementary (dT₂₀) or complementary (dA₂₀) oligonucleotide. Chronofluorimetric monitoring of the adsorption and hybridization processes was used to investigate oligonucleotide films of different density, in different salt concentrations, at temperatures of 25 and 40 °C, with the concentration of the target DNA being 0.005–0.1 μM. Mathematical models based on first- and second-order Langmuir adsorption have been examined to describe both the adsorption and the hybridization processes. Experimental data were processed using the models, and the hybridization kinetics were calculated. Hybridization kinetics on these optical fiber DNA sensors was found to be up to three orders faster than results presented for a number of other experiments using different immobilization chemistries.