20 research outputs found

    Microwave radiation-assisted synthesis of Pt-CNTs

    Get PDF
    Carbon nanotube-supported platinum nanoparticles (Pt-CNTs) were synthesized using glycol as a reducer and H2PtCl6 as an oxidant under microwave radiation. The CNTs was first hydroxylated in refluxing concentrated HNO3. Transmission electron microscopy was used to investigate the influence of the hydroxylation time on the amount of supported platinum on the carbon nanotubes and the effect of the amount of platinum on the morphology of Pt-CNTs. Selected area electron diffraction, X-ray diffraction, and UV-visible spectroscopy were employed to characterize the structure of the Pt-CNTs and the results showed that Pt was of polycrystal nanoparticles. Cyclic voltarnmetric study indicated that the CNTs surface was covered by a compact layer of Pt when the loadings of platinum to CNTs was as high as 0.1875 mmol . g(-1). The result, on one hand, showed that cyclic voltammetry could be used to study the surface structure and properties of CNTs supported platinum nanoparticles, and on the other hand, indicated that it was possible to obtain novel electrode materials with good catalytic activity and stability by optimizing the synthesizing method for CNTs supported platinum nanoparticles

    基于深度学习的行人跟踪研究

    No full text
    在计算机视觉的领域中,深度学习的技术应用得越来越广泛,基于深度学习行人跟踪在计算机视觉领域中具有重要的研究价值。近年来,大量的研究在基于孪生神经网络在目标跟踪领域的研究成为重点。1相关介绍在科研领域中,计算机视觉是其研究的重点领域,随着科学的进步,计算机视觉追踪被应用非常广泛,如企业、军事和自动驾驶等对目标的准确追踪有越来越高的要求。近几年,目标跟踪算法是根据相关的滤波框架进行应用,</p

    基于Python的协议栈软件内部数据查询方法

    No full text
    分布式数通设备已广泛应用于各运营商的组网环境之中,目前在设备搭载的协议栈软件运行过程中,其承载的某一条业务链路出现故障时,无法快速有效且在不影响其他业务的情况下定位问题原因。文章针对这一现状进行了分析及研究,提出了快速查询数通设备协议栈软件内部模块数据的方法,基于Linux系统设计开发,同时兼容Windows系统,实现过程涉及C语言及Python脚本编写。该方法可直接使用命令在屏幕上输出所查数据结构中的所有数据,规避了传统查询协议栈软件内部数据使用断点或单步调试方式引起的协议断临、业务中断等问题,该方法的工作效率、工作精度和工作质量均较高,非常适于推广应用

    一种汽油脱硫吸附剂及制备和应用

    No full text
    本发明涉及一种汽油脱硫吸附剂及制备和应用;将锌盐、VIII族非贵金属盐、其它盐类和沉淀剂在含有质子的极性溶剂中混合,在温度为室温至150℃下进行沉淀反应,得到储硫剂;将含有VIB和/或VIII族过渡金属的可溶性盐,浸渍到含有γ-Al2O3的分子筛载体上,得到辛烷值恢复剂;按质量百分比,分子筛为5-50%;氧化锌为5-80%;VIB和/或VIII族非贵金属为1-30%;其它黏合剂为5-50%;这两部分可以通过混捏、浸渍、沉积沉淀、共沉淀方法组合在一起使用,也可以分开使用;该吸附剂可以吸附汽油中的几乎所有含硫化物,得到超低硫甚至无硫汽油,而辛烷值保持不变或略有增加。待填
    corecore