一种单频网络控制方法及单频网络控制实体

    公开(公告)号:WO2009056005A1

    公开(公告)日:2009-05-07

    申请号:PCT/CN2008/001720

    申请日:2008-10-10

    Inventor: 李珍玲 沈晓冬

    CPC classification number: H04W24/02 H04B7/022 H04H20/42 H04H20/67 H04W16/04

    Abstract: This invention discloses a control method of a single-frequency network and a control entity of a single-frequency network. The control method of the single-frequency network provided by this invention comprises: obtaining the service request information sent by a user terminal; changing the single-frequency network according to the service request information. The control entity of the single-frequency network provided by this invention comprises: an obtaining unit, used for obtaining the service request information sent by a user terminal; a controlling unit, used for changing the single-frequency network according to the service request information. This invention realizes the dynamic control of a single-frequency network by changing the single-frequency network according to the service request information sent by a user terminal. Consequently, the service provider can dynamically change a single-frequency network according to the requirement of users and implement the optimization configuration of wireless network resources.

    一种以稻壳灰为原料制备纤维增强SiO2气凝胶的方法

    公开(公告)号:WO2013010371A1

    公开(公告)日:2013-01-24

    申请号:PCT/CN2011/084403

    申请日:2011-12-21

    CPC classification number: B09B3/00 C01B33/16

    Abstract: 本发明涉及一种以稻壳灰为原料制备纤维增强SiO 2 气凝胶的方法,其特征在于由以下步骤制得:稻壳灰经无机碱溶液浸取,阳离子交换树脂处理,无机碱中和生成二氧化硅溶胶,待溶胶变得粘稠时与增强纤维复合,静置得到二氧化硅复合凝胶,凝胶经老化、水洗、有机溶剂置换、干燥,制备出纤维增强的SiO 2 气凝胶。获得气凝胶密度为0.1~0.4g/cm 3 ,比表面积可达400~700m2/g,孔体积为1.0~3.0cm 3 /g,平均孔径为5~30nm,抗压强度为0.5~2.5MPa。本发明以价格低廉、来源充足的农业废料稻壳灰代替价格昂贵且有一定毒性的有机硅为原料,以纤维为增强体,制备得到SiO 2 气凝胶,在保持气凝胶优异性能的前提下,既降低了气凝胶的生产成本又提高了气凝胶的力学性能。

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