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    • 68. 发明授权
    • Method to decrease aldehyde content in polyolefin products
    • 降低聚烯烃产品中醛含量的方法
    • US06632874B2
    • 2003-10-14
    • US09846648
    • 2001-05-01
    • Mark RuleYu ShiLinda Hsiaohua LiuJohn V. Standish
    • Mark RuleYu ShiLinda Hsiaohua LiuJohn V. Standish
    • B29D2200
    • C08F6/006C08K5/00C08L23/06C08L23/10Y10T428/1352C08L23/02
    • Methods are provided for decreasing aldehyde content in polyolefin materials comprising combining with the polyolefin material an organic additive compound which reacts with aldehydes to form water and a resulting organic compound. The organic additive compound comprises at least two hydrogen-substituted heteroatoms bonded to carbons of the organic additive compound such that the organic additive compound is reactive with aldehydes present in the polyolefin to form water and the resulting organic compound, which comprises an unbridged five- or six-member ring including the at least two heteroatoms. The resulting organic compound advantageously neither imparts an off-taste to food and beverage products in contact with the polyolefin nor discolors the polyolefin. Preferred polyolefins include polypropylene and polyethylene.
    • 提供了用于降低聚烯烃材料中醛含量的方法,包括与聚烯烃材料结合的有机添加剂化合物与醛反应形成水和所得的有机化合物。 有机添加剂化合物包含至少两个与有机添加剂化合物的碳结合的氢取代的杂原子,使得有机添加剂化合物与存在于聚烯烃中的醛反应形成水,所得的有机化合物包含未桥连的五元或 六元环,包括至少两个杂原子。 所得到的有机化合物有利地既不会对与聚烯烃接触的食品和饮料产品产生异味,也不会使聚烯烃变色。 优选的聚烯烃包括聚丙烯和聚乙烯
    • 69. 发明授权
    • Method and system for initiating idle handoff in a wireless communications system
    • 用于在无线通信系统中发起空闲切换的方法和系统
    • US06320855B1
    • 2001-11-20
    • US09392868
    • 1999-09-09
    • Yu Shi
    • Yu Shi
    • H04Q700
    • H04W60/04H04W36/08H04W36/30H04W48/08H04W48/16H04W76/28
    • A system and method for deciding whether to initiate an idle handoff in a wireless communications system is disclosed. A mobile station having an integrated chip and software instructions executed by that chip obtain samples at first and second times of the pilot signals radiated by first and second base stations. A determination is then made whether to initiate an idle handoff based upon a comparison of the total strengths of the second time samples and a position-weighting term with a design constant. The position-weighting term accounts for the change in position of the mobile station relative to the first and second base stations in between the first and second sample times. The position-weighting term may itself be weighted to account for the strength of the earliest arriving multipath component of the first and second pilots relative to the total strength of the first and second pilots.
    • 公开了一种用于决定是否发起无线通信系统中的空闲切换的系统和方法。 具有由该芯片执行的集成芯片和软件指令的移动站在由第一和第二基站辐射的导频信号的第一和第二时间获得样本。 然后,基于第二时间样本的总强度与设计常数的位置加权项的比较来确定是否发起空闲越区切换。 位置加权项考虑了在第一和第二采样时间之间移动台相对于第一和第二基站的位置变化。 位置加权项本身可以被加权以考虑第一和第二导频的最早到达多径分量相对于第一和第二导频的总强度的强度。