化学钟(英语:Chemical clock,又称为化学振荡)是指远离平衡态的化学反应体系,在开放条件下并不趋向稳定,而是围绕稳态以时间为横坐标,中间物浓度出现有节律的极大值或极小值,而且时间有序。
一秒钟内,一个细胞要执行约一千万次耗能化学反应,而统共仅需要约1皮瓦(百万百万分之一瓦)能量。
In one second, a cell performs about 10 million energy-consuming chemical reactions, which altogether require about one picowatt (one millionth millionth of a watt) of power.
有人在美国化学学会大会(American Chemical Society conference)上说,5分钟的超声波(一项与孕期胎儿检查有关的常用技术)作用,也有类似的效果。
Five minutes of ultrasound - a technique normally associated with scanning babies in the womb - had a similar effect, an American Chemical Society conference heard.
加州大学欧文分校的研究人员找出了调节我们内部的生物钟遗传机制化学触发开关。
University of California, Irvine researchers have identified the chemical switch that triggers the genetic mechanism regulating our internal body clock.
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