基于深度学习的变电站巡检机器人道路场景识别

为了提升变电站巡检机器人对自身所处环境的理解能力,将深度学习技术应用于变电站巡检机器人对道路场景的识别中,提出了一种全卷积道路场景识别网络(road scene recognition net,RSRNet)。该网络主要由相对浅层的编码网络和镜像结构与跳层融合结构相结合的解码网络组成,通过编码网络提取图像特征后由解码网络识别出图像目标信息。通过实验表明,本文提出的网络在同类型网络中识别精度及效率更高,同时在实际变电站场景中也表现出了优良的场景识别性能。     

聚吡咯掺杂溴酚蓝修饰玻碳电极的制备和电化学性质

将玻碳电极在含吡咯、溴酚蓝(BPB)和KCl的磷酸盐缓冲溶液(PBS)中进行循环电位扫描,可在玻碳电极表面形成掺杂溴酚蓝的聚吡咯薄膜.制备的修饰电极在PBS中进行循环伏安扫描产生一对可逆性很好的氧化还原峰.电极具有良好的稳定性和电化学活性.对烟酰胺腺嘌呤二核苷酸(NADH)的氧化有催化作用.     

High-performing silicon-based germanium Schottky photodetector with ITO transparent electrode

A near-infrared germanium(Ge)Schottky photodetector(PD)with an ultrathin silicon(Si)barrier enhancement layer between the indium-doped tin oxide(ITO)electrode and Ge epilayer on Si or silicon-on-insulator(SOI)is proposed and fabricated.The well-behaved ITO/Si cap/Ge Schottky junctions without intentional doping process for the Ge epilayer are formed on the Si and SOI substrates.The Si-and SOI-based ITO/Si cap/Ge Schottky PDs exhibit low dark current densities of 33 mA/cm2 and 44 mA/cm2,respectively.Benefited from the high transmissivity of ITO electrode and the reflectivity of SOI substrate,an optical responsivity of 0.19 A/W at 1550 nm wavelength is obtained for the SOI-based ITO/Si cap/Ge Schottky PD.These complementary metal–oxide–semiconductor(CMOS)compatible Si(or SOI)-based ITO/Si cap/Ge Schottky PDs are quite useful for detecting near-infrared wavelengths with high efficiency.     

微波消解-火焰原子吸收光谱法测定紫菜中八种微量元素

采用微波消解紫菜样品,用火焰原子吸收光谱法测定了样品中Fe、Mg、Zn、Ca、Pb、Cd、Mn、Cu的含量。结果表明,该法具有良好的准确度和精密度,加标回收率在97.0%~102.2%范围内,相对标准偏差(RSD)≤1.82%,为研究金属元素在紫菜中的含量与食疗保健功效的关系提供了有用的数据。     

火焰原子吸收光谱法测定龙眼肉中微量元素

用微波消解龙眼肉样品,火焰原子吸收光谱法测定样品中钙、镁、铁、铜、锌、锰微量元素的含量,该方法的加标回收率在98.40%-100.59%范围,相对标准偏差(RSD)≤1.68%,测定结果准确.为研究龙眼肉的药理、药效提供了有用的数据.     

Low-temperature plasma enhanced atomic layer deposition of large area HfS_2 nanocrystal thin films

Hafnium disulfide(HfS2) is a promising two-dimensional material for scaling electronic devices due to its higher carrier mobility, in which the combination of two-dimensional materials with traditional semiconductors in the framework of CMOS-compatible technology is necessary. We reported on the deposition of HfS2 nanocrystals by remote plasma enhanced atomic layer deposition at low temperature using Hf(N(CH3)(C2H5))4 and H2S as the reaction precursors. Selflimiting reaction behavior was observed at the deposition temperatures ranging from 150℃ to 350℃, and the film thickness increased linearly with the growth cycles. The uniform HfS2 nanocrystal thin films were obtained with the size of nanocrystal grain up to 27 nm. It was demonstrated that higher deposition temperature could enlarge the grain size and improve the HfS2 crystallinity, while causing crystallization of the mixed HfO2 above 450℃. These results suggested that atomic layer deposition is a low-temperature route to synthesize high quality HfS2 nanocrystals for electronic device or electrochemical applications.     

考虑减振装置弹簧刚度的斜拉索等效索长及索力测量

为了提高对安装减振装置斜拉索索力的测试精度,提出计算等效索长的铰接等代法.基于索力振动频率法所采用的弦振动理论,考虑减振装置弹簧刚度对拉索边界条件的影响,着重研究减振装置弹簧刚度与等效索长的关系,提出考虑弹簧刚度影响的二次等效索长修正公式.结合实测索力及通用有限元软件ANSYS关于振动索力的数值模拟结果,验证了该方法的...     

用强氧化金刚石制备金刚石刀具

本文介绍了采用强氧化处理的金刚石颗粒制备电镀金刚石刀具的方法及其特点。金刚石颗粒是在混合酸中通过强氧化而得到的,经过正交试验获得优化后的强氧化处理温度为120℃,强氧化处理时间为8小时。结果表明,金刚石经强氧化处理,刀具表面镍瘤现象大为改善,镍瘤的减少提高了金刚石刀具的加工效率和加工精度;经强氧化处理的金刚石颗粒表面存在有较大粗糙的凹坑,金刚石颗粒表面的凹坑提高了镀层对金刚石颗粒的把持力,增强了"机械锚链"效应;由其制得的刀具平均寿命比金刚石未经强氧化处理制备的刀具高22.5%。     

探讨微电影创作对独立学院大学生能力的培养

有鉴于当前微电影的特点和良好的发展态势,结合独立学院大学生的个性特点,在分析独立学院大学生创作微电影的可行性的基础上,本文探讨了微电影创作对独立学院大学生能力培养的问题。     

基于“猫眼效应”的目标识别

 阐述了“猫眼效应”的基本原理，并在此基础上对“猫眼效应”进行了实验验证。实验结果表明，光电探测器的确存在“猫眼效应”。利用“猫眼效应”进行远距离的目标探测与识别能够简化系统并有效提高目标探测识别的概率，对今后选取合适的方案进行空间目标捕获、跟踪和瞄准有一定的参考意义。