分类： 工程与技术科学 >> 生物医学工程学 提交时间： 2020-04-05
摘要： Electrochemical impedance biosensors measure the impedance varies of the solution during the biochemical process, so it can realize label-free biological detection. However, the biological signal to be detected is very weak, thus requiring signal amplification circuit. Printed organic thin film transistor (OTFT) has many advantages such as low cost, flexible bending, biocompatibility, which is suitable for biological detection. This work built up amplification circuit for electrochemical impedance test based on OTFT, different concentrations of phosphate buffer solution (PBS) used as test samples were measured with the above circuit. The results show that OTFT-based circuit has a good implementation of signal amplification, which lay a foundation for the application of printed OTFT in the electrochemical impedance biosensors.
分类： 心理学 >> 应用心理学 提交时间： 2020-04-05
摘要： 探讨父母元情绪理念与青少年问题行为的关系以及青少年自身迷走神经功能对两者关系的影响。采用“心算任务范式”及问卷法，对224名青少年及其父母进行测量与调查。结果发现：(1)母亲情绪教导理念负向预测青少年内外化问题行为，母亲情绪失控理念正向预测青少年内外化问题行为，母亲情绪不干涉理念正向预测青少年外化问题行为；父亲情绪教导理念负向预测青少年内化问题行为，父亲情绪失控理念正向预测青少年外化问题行为。(2)当青少年迷走张力较低时，母亲情绪不干涉理念正向预测青少年外化问题行为；当青少年迷走抑制较低时，母亲情绪失控理念正向预测青少年内化、外化问题行为，父亲情绪失控理念正向预测青少年外化问题行为。综上，父母元情绪理念能够预测青少年问题行为，且父母元情绪理念对青少年问题行为影响存在差异。同时，迷走神经功能对父母元情绪理念与青少年问题行为的关系具有一定调节作用。
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