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公开(公告)号：US4652694A
公开(公告)日：1987-03-24
申请号：US814844
申请日：1985-12-30
IPC分类号： H02G13/00
摘要： The invention relates to a corona discharge lightning rod comprising a tip which is isolated from the ground and having a base which is connected via discharge means to the ground, said lightning rod being suitable for ionizing the ambient atmosphere at the end of its tip. An electric circuit is provided for periodically reducing the potential of the tip to a value which is too low to maintain corona discharge, thereby producing periodic and intermittent corona discharge pulses. Preferably, the tip is electrically connected to a potential generator such that the potential (V.sub.0) applied to the tip is a variable potential in the form of recurrent wave trains, and such that the peak value of the first half cycle of the train having a polarity opposite to the polarity of the ambient atmosphere is greater than the threshold at which the corona effect takes place. This need only occur in the presence of the natural amplification (V.sub.1) as produced by the ambient electric field which exists during a thunderstorm.
摘要翻译： 本发明涉及一种电晕放电避雷针，其包括与地面隔离的尖端，并具有通过放电装置连接到地面的基座，所述避雷针适于在其尖端的端部离子化环境大气。 提供了一种电路，用于周期性地将尖端的电位降低到太低以致不能保持电晕放电的值，从而产生周期性和间歇性的电晕放电脉冲。 优选地，尖端电连接到电位发生器，使得施加到尖端的电位（V0）是复现波列形式的可变电位，并且使得列车的前半周期的峰值具有 与环境大气的极性相反的极性大于发生电晕效应的阈值。 这仅需要在雷暴期间由环境电场产生的自然放大（V1）的存在下进行。
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2.发明授权Process for the depolymerization of starch by irraciation and products so obtained 失效通过灌溉和如此获得的产品解淀粉的方法
公开(公告)号：US4115146A
公开(公告)日：1978-09-19
申请号：US736208
申请日：1976-10-27
CPC分类号： C08B30/18
摘要： Process for depolymerizing starch by irradiation in which granular starch, whose water content is at the most about 23%, is subjected, in the presence of an acid which is neutralized at the end of the treatment, to a dose of radiation which is a function of the nature and of the quantity of the acid used.
摘要翻译： 通过辐射解聚淀粉的方法，其中水含量最多为约23％的颗粒淀粉在处理结束时被中和的酸的存在下进行到作为功能的辐射剂量 的性质和使用的酸的量。
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