这使福岛达到了在25年前这个月发生的切尔诺贝利核灾难的高度(尽管福岛泄露的放射性物质只是切尔诺贝利泄露的十分之一,而且没有人死于泄露的放射性物质)。
That places it on a par with the Chernobyl disaster 25 years ago this month (though the radiation released at Fukushima is only a tenth of Chernobyl's, and nobody has died from it yet).
然而,干细胞里四分之一的甲基胞核嘧啶却没有鸟嘌呤随后。
A quarter of the methylated cytosines in stem cells, however, were not followed by guanines.
那其中确实含有一部分酸乳酪粉,但主要成分确是糖和棕榈核油,而且脂肪也以饱和脂肪为主。
It has yogurt powder but it is mostly made up of sugar and palm-kernel oil-and all the fat is mostly saturated.
正当世界的其他人等待着看日本人是否能避免核灾难时,一小部分专家正将他们的生命置于危险之下以阻止灾难。
As the rest of the world waits to see if Japan can avert a nuclear catastrophe, a small band of experts is putting their lives at risk to prevent the disaster.
这些“费米大天区望远镜(LAT)”所侦测到的高能伽马射线的波长仅相当于原子核大小的千分之一。
These high-energy gamma rays, detected by Fermi’s Large Area Telescope (LAT), have wavelengths one-thousandth the size of an atomic nucleus.
结合物的细胞核基因是人类的,但是一小部分其它基因(位于细胞核外的称为线粒体的组织里面)来自兔子的遗传。
The nuclear genes of the result would be human, but a handful of other genes, which inhabit structures outside the nucleus, called mitochondria, would be inherited from the rabbit.
而实际上,伊朗伊朗只是暂停了核项目里最不重要的一部分,也就是武器化。
In fact, Iran halted only the least important component of its nuclear program, namely weaponization.
周一科学家们宣布,在夸克胶子等离子体中,以百分之99.995光速粉碎金原子核,夸克就会短暂丧失分清左右的能力。
Scientists announced Monday that in a quark-gluon plasma, achieved by smashing gold nuclei together at 99.995 percent of light speed, quarks briefly lost their ability to tell right from left.
三月份日本的大地震、海啸及核灾难抑制了全球市场,也可能将美国的经济增长刮去了十分之几个百分点。
The catastrophic earthquake, tsunami and nuclear disaster in Japan depressed global markets in March, and may have shaved a few tenths of a percentage point off America's growth.
然而到了早上11点30分,奇怪的是核物质浓度大幅下降到了6毫希每小时,工作人员各自回到了岗位上。
By 11.30am however the level dropped dramatically, and mysteriously, to about 6msv per hour and the workers were back to the job.
粒细胞的核是分叶的,依据染色特征分为中性粒细胞,嗜酸性粒细胞,嗜碱性粒细胞。
Granulocytes have a segmented nucleus and are classified according to their staining characteristics as neutrophils, eosinophils, or basophils.
“对海产品的仔细检测是十分重要的”,她在一份邮件中指出,“因为很多放射性核在环境中富集。”
"It is extremely important that seafood be carefully monitored," she said in an E-mail. "This is because many of the radionuclides are concentrated in the environment," she added.
“对海产品的仔细检测是十分重要的”,她在一份邮件中指出,“因为很多放射性核在环境中富集。”
“It is extremely important that seafood be carefully monitored,” she said in an e-mail. “This is because many of the radionuclides are concentrated in the environment,” she added.
星期一,一列装载着核弹级铀材料的专列到达了一处俄罗斯的安全设施。这些核材料来自波兰的一个研究用的反应堆,运送它们,是为了确保世界各地的危险的放射性物质安全的努力的一部分。
A shipment of bomb-grade uranium arrived at a secure facility in Russia on Monday, sent from a research reactor in Poland as part of a race to secure dangerous radioactive material around the world.
扣带皮层部位是大脑皮层的一部分(也在【两个】大脑半球),它对杏仁核进行调节。
The pACC is part of the cerebral cortex (again, found in both hemispheres) that regulates the amygdalas.
但是,在今天的日本看来,其中所释放出来的反核信息是最为不和谐的一幕,该国将近三分之一的电力是由核能来贡献的。
Yet it is the film's anti-nuclear message that seems most discordant in present-day Japan, where nearly a third of the nation's electricity is generated by nuclear power.
34分钟后,用了70万年时间,电子能附在原子核上形成了原子。
34 minutes later, it took 700 thousand years forming atoms by adhering electrons onto nucleons.
更新:美国东部时间下午4:29分:反核专家凯文·坎普(KevinKamp)通过福布斯和公共精度学院解释了发生在福岛的噩梦经过。
Update: 4:29 PM ET: Anti-nuclear expert Kevin Kamp explains the nightmare scenario in Fukushma, via Forbes and the Institute for Public accuracy.
在希腊地层(Hellenistic layer)之下的建筑中,加芬克尔找到了四个橄榄核,经碳-14分析确定其年代为公元前1000年左右。
Beneath that Hellenistic layer he found buildings scattered with four olive pits, which carbon-14 analysis dated to around 1000 B.C..
导弹射程达700公里,重12吨,由印度自主开发,是旨在威慑核邻国巴基斯坦与中国的武器装备的一部分。
The 12-tonne missile, which was indigenously developed, is part of an Arsenal intended as a deterrent towards Pakistan and China, its nuclear-armed neighbours.
强核力的一部分也由中子提供,在大多数原子核内,中子比质子数量多,并且不带电荷。
Some of this force is also supplied by neutrons, which outnumber protons in most nuclei and have no electric charge.
萨波尔斯基认为,杏仁核是大脑的一部分,负责决定我们是否要生气或焦虑,而前额叶皮质则是负责让你停下来去思考,然后找出解决办法。
The amygdala, Sapolsky explains, is the part of the brain that decides if we should get angry or anxious, and the prefrontal cortex is the part that makes you stop, think and find solutions.
一年后,他们成功地让两个元素的原子核聚变,创造出了他们的首个113号元素原子核,但过了不到千分之一秒,它就衰变了。
A year later, they successfully fused two atomic nuclei from these elements, creating their first nucleus of element 113, but it decayed in less than a thousandth of a second.
我们将详细的讨论核心课程中十分重要的特质,其引导出再生核希尔伯特空间理论(RKHS)中一个非常关键的概念。
We discuss at length the properties of a very important class of kernels which lead to the key notion of Reproducing kernel Hilbert Space (RKHS).
这些“费米大天区望远镜(LAT)”所侦测到的高能伽马射线的波长仅相当于原子核大小的千分之一。
These high-energy gamma rays, detected by Fermi's Large Area Telescope (LAT), have wavelengths one-thousandth the size of an atomic nucleus.
作为伊朗签署限制该国核活动协议的一部分,西方国家已经放松了对该国限制,因此伊朗日益强大。
Iran is growing stronger because Western nations have eased restrictions as part of an agreement Iran signed to limit its nuclear activities.
左侧可见一正常的、成熟的淋巴细胞,右侧是与其比较的分叶核嗜中性粒细胞。
A normal mature lymphocyte is seen on the left compared to a segmented PMN on the right.
左侧可见一正常的、成熟的淋巴细胞,右侧是与其比较的分叶核嗜中性粒细胞。
A normal mature lymphocyte is seen on the left compared to a segmented PMN on the right.
应用推荐