Multi-Stream Communication
    34.
    发明申请
    Multi-Stream Communication 有权
    多流通信

    公开(公告)号:US20130051300A1

    公开(公告)日:2013-02-28

    申请号:US13222680

    申请日:2011-08-31

    IPC分类号: H04W4/06

    摘要: A method for reducing bandwidth used in multiple transmissions on a cellular network includes mapping at least one request of at least one end-device to a unicast channel between server and an intermediary in the network, creating a correlated multicast communication channel between the intermediary and the at least one end-device, and transferring data from the unicast channel to a multicast channel at the intermediary.

    摘要翻译: 一种用于减少在蜂窝网络上的多个传输中使用的带宽的方法包括将至少一个终端设备的至少一个请求映射到网络中的服务器和中间设备之间的单播信道,从而在中间设备和 至少一个终端设备,并且将数据从单播信道传送到中间设备的多播信道。

    Core-shell synthesis of carbon-supported alloy nanoparticle catalysts
    39.
    发明授权
    Core-shell synthesis of carbon-supported alloy nanoparticle catalysts 有权
    碳载合金纳米颗粒催化剂的核壳合成

    公开(公告)号:US07053021B1

    公开(公告)日:2006-05-30

    申请号:US10830986

    申请日:2004-04-22

    CPC分类号: B22F1/0018 B22F9/24 B82Y30/00

    摘要: There is provided a method of preparing carbon supported, ternary alloy composition core-shell PtVFe nanoparticles for use as fuel cell electrocatalysts. These catalysts have been found particularly useful for oxygen reduction reactions. The alloy nanoparticles can be assembled on carbon supports which then may undergo subsequent activation and/or calcination treatments. The method, combined with new synthetic feed and processing conditions, provides core-shell PtVFe alloy nanoparticles of 1–3 nm size. The catalyst-produced high monodispersity, controlled composition are highly dispersed, and have a uniform distribution. Finally, the correlation of the preparation and treatment parameters to the ORR catalytic activities of the prepared nanoparticles is described. The catalysts exhibit ORR in the range of 2 to 4 times more than a standard Pt/carbon catalyst.

    摘要翻译: 提供了一种制备碳负载的三元合金组成的核 - 壳PtVFe纳米粒子作为燃料电池电催化剂的方法。 已经发现这些催化剂对氧还原反应特别有用。 合金纳米颗粒可以组装在碳载体上,然后可以进行随后的活化和/或煅烧处理。 该方法结合新的合成进料和加工条件,提供1-3nm大小的核 - 壳PtVFe合金纳米粒子。 催化剂生产的高分散度,受控组成高度分散,分布均匀。 最后,描述了制备和处理参数与制备的纳米颗粒的ORR催化活性的相关性。 催化剂表现出比标准Pt /碳催化剂高2至4倍的ORR。