生物钟

A gene circuit of negative feedback comprises 3 main genes: CCA1, LHY, and TOC1. The "external coincidence" model has been proposed for photoperi- odic regulation of flowering time.

拟南芥生物钟由CCA1、LHY和TOC13个主要基因构成了一个稳定的负反馈环，来调节昼夜节律中各个基因如APRR/TOC15重奏的作用，从而调控昼夜节律的相位。

Melatonin is a hormone produced by pineal gland. As a synchronizer of endocrine system bioclock in vertebrate, melatonin possesses many physiological activities,e.g. regulating the biologic rhythm according to photoperiod, by its receptors widely distributed in pituitary gland, hypothalamus, optomeninx, kidneys, skin and its appendages, etc.

褪黑素主要是由松果体合成的一种激素，作为脊椎动物内分泌系统生物钟的同步器，其受体广泛分布于垂体、下丘脑、视网膜、肾脏和皮肤及其附属器，有着多种生理活性，按光周期信号调节生物体昼夜节律和季节节律。

In Arabidopsis, cryptochromes are nuclear proteins that mediate light control of hypocotyl elongation, leaf expansion, photoperiodic flowering, and the circadian clock.

在拟南芥中隐色素是核蛋白，通过蓝光调节控制下胚轴的伸长，子叶的延展，光周期诱导开花以及生物钟。

A single sex. When a whiptail's biological clock goes off, she just lays some eggs.

当鞭尾蜥蜴的生物钟消失时，它就产下一些卵。

I think the right attitude is to go with the tide of the times and live as a master of our time without submitting to a kind of 21st century enslavement.

我们要在这个二十四小时的因特网时间 16 表内，学会按照自己的生物钟来安排自己的生活，而不要去追赶那永不落的网络太阳。

Remember, manipulating light and temperature manipulates your body's clock and gives it a clear mandate to sleep.

记住，通过调节亮度和温度来调节你的生物钟，给它一个明确的睡觉指令。

It's not as strong as a sleeping pill, but it directly affects your body's internal clock and nudges it toward sleep.

它的药效不像安眠药那么强，但可以直接作用于你的生物钟，把它调到睡眠档。

Going to bed in the wee hours and snoozing until noon only disrupts the brain's clock further.

凌晨上床睡觉，一直睡到第二天中午，只会进一步破坏大脑的生物钟。

And activating it at the same time every morning synchronizes your body's biological clock.

每天早晨在同一时刻激活大脑就校对了人的生物钟。

And activating it at the same time every morning synchronizes your bodys biological clock.

每天早晨在同一时刻激活大脑就校对了人的生物钟。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。