In noise intensities between-∞ dB to 20 dB. Results When the amplitude of pure tone was well above or well below measured hearing threshold, the additive noise did not affect its de tectability; 其中4名接受了噪声范围在-∞~20dB的测试。结果当纯音强度远高于或低于被试者的听阈时,增加噪声并不能改善被试者的感知能力;
An esterified epoxide lubricating oil additive, "DE film forming agent" was synthesized using oleic acid and epoxy resin in this pa-per. 用油酸和环氧树脂合成了一种能够形成摩擦聚合膜的酯化型环氧化合物润滑油添加剂&DE成膜剂。
De velopment and Application of Additive DE for Zinc Plating in Acidic Bath 酸性镀锌添加剂的研制
Objective: To investigate whether the mitochondrial ATP-sensitive potassium channel ( mitoK_ ( ATP)) opener diazoxide as an additive to cardioplegia solution could enhance myocardial protection during hypothermic preservation of the rat heart. 目的:探讨线粒体ATP敏感性钾通道开放剂二氮嗪(DE)对离体大鼠心脏冷保存效果的影响及作用机制。