方便并且非放射性测定损伤细胞释放的乳酸脱氢酶活性。
Convenient assay measures activity of lactate dehydrogenase (LDH) released from damaged cells.
培养结束，测量神经突起长度、密度后，取出标本作同位素放射性测定。
After the culture end and the measurement of the length and density of neural axons, the samples were taken out for isotopic radioactive measurement.
事实证明，放射性碳年代测定法适用于许多史前艺术品。
It turns out that radiocarbon dating works for a lot of prehistoric art.
放射性碳年代测定法显示，亚马逊黑土中被烧焦的木头通常有1000多年的历史。
Radiocarbon dating shows that the charred wood in Terra Preta soils is typically more than 1,000 years old.
这些矿物可以用放射性衰变技术测定年代，因为它们所含的放射性微量元素非常少。
These minerals can be dated by radioactive decay techniques because of the very small quantities of radioactive trace elements they, in turn, contain.
汤姆，你在考古学课上有没有讨论过放射性碳年代测定法？
Tom, in your archaeology class, did you talk about radiocarbon dating?
从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。
Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.
放射性碳年代测定法涉及到了化学分析，与文物中残留的有机物成分所释放的放射性碳的含量测定有关。
Radiocarbon dating had to do with chemical analysis, something to do with measuring the amount of radiocarbon that's left in organic stuff.
总共有485块锆石内部带有包体，其中有十几块包体中含有放射性微量元素，研究者可以根据它们来测定包体的年代。
A total of 485 zircons held inclusions, and about a dozen or so of these contained radioactive trace elements that allowed the researchers to determine their ages.
但是，相对于仅使用一个方法测试放射性衰变，研究人员测定时使用了三种元素，铅，钐，钕。
But rather than test the radioactive decay using just one method, the researchers used three, involving the elements lead, samarium and neodymium.
西姆斯使用放射性计时器测定并比较氡的两种同位素，以此来解密火山的活跃程度。
Sims USES radioactive clocks to decipher volcanic processes, measuring and comparing two isotopes of radon.
研究者通过对包裹化石的沉积层进行放射性元素年代测定，推断出中华龙鸟生活在1.25亿年前。
It lived around 125 million years ago, based on the dating of radioactive elements in the sediments that encased the fossil.
它使用于放射性碳年代测定法。
“很多针对这一时期的放射性碳年代测定的精确范围都存在争议，”阿米哈伊·玛扎尔说着便有些厌倦的轻笑起来。
"Many of the radiocarbon dates for this period cover exactly the range that's under debate," Amihai Mazar says, chuckling wearily.
放射性碳测定年代的专家们还发现了在考古现场工作的各种优点。
Radiocarbon dating experts have also found advantages from working onsite with archaeologists.
采用放射性碳技术来测定一处考古遗址的年代，得到的并不是一个准确日期，而是一个时间跨度范围通常为200年或更久远的数值。
Radiocarbon dating provides a range, often spanning 200 years or more, rather than an exact date for a site.
如今，利用放射性碳素测定年代法，科学家已确定这一用乳齿象牙雕刻而成的长矛尖端的精确年代。
Scientists have now accurately carbon-dated the sharp tip that itself carved from mastodon bone.
放射性碳年代测定法显示，那块布料产于1260年与1390年之间。
Radiocarbon dating in 1988 showed the cloth was made between 1260 and 1390.
研究人员称，根据放射性碳年代测定法的测定结果，德国南部多瑙河流域附近的一处考古遗址中出土的这尊雕像距今至少有三万五千年。
Radiocarbon dating indicates the figure excavated from an archaeological dig in southern Germany, near the Danube valley, was at least 35,000 years old, the researchers said.
不同的实验室正在对这些猛犸象骨骼进行放射性碳测定，以更加精确地得知这些化石的年龄。
Various labs are doing radiocarbon-dating of the bones to more precisely date them.
研究人员称，根据放射性碳年代测定法的测定结果，德国南部多瑙河流域附近的一处考古遗址中出土的这尊雕像距今至少有三万五千年。
Radiocarbon dating indicates the figure excavated from an archaeological dig in southern Germany, near the Danube valley, was at least 35, 000 years old, the researchers said.
如果这个见证的声称是真实的话，那么裹尸布的放射性碳年代测定将会相互一致(见下)。
If the claims of this testimony are correct, it would be consistent with the radiocarbon dating of the shroud (see below).
一种碳的天然放射性同位素，原子量为4，半衰期为5，780年，用于测定古代生物标本，地质标本或考古遗迹的标本的年代。
A naturally radioactive carbon isotope with atomic mass 4 and half-life 5,780 years, used in determining the age of ancient organic, geologic, or archaeological specimens.
介绍了一种测定滑石粉中放射性核素铀钍的简便、快速且灵敏的方法。
A simple, quick, and sensitive method to determine the radioactive nuclides of uranium and thorium in talc is described.
对放射性强度跨越1000倍动态范围(10个半衰期)的跟踪测量中影响相对峰计数率精确测定的因素进行了讨论。
Factors influencing precise measurement of relative peak counting rates are discussed in time-series measurements over a dynamic range of 1000-fold radioactive intensities (10 half-lives).
方法：通过降低标记抗原的比放射性，提高抗血清的浓度，改进曲线拟合方式等方法，扩大测定范围。
Methods the measurable range was broadened through: Lowering of the specific radioactivity of the labelled antigen, increasing the concentration of the anti-serum and improve the curve fitting method.
首次将呼吸计和放射性示踪技术相结合，同时测定同一翡翠贻贝个体在不同条件下的耗氧率和溶解态重金属吸收率。
For the first time we coupled respirometric and radiotracer techniques to simultaneously measure the rates of oxygen and metal uptake in the green mussel under different environmental conditions.
通常科学家将这种方法用在动物身上，通过使它们的细胞具有放射性故可以测定细胞周期，只是将这种方法用在人身上不人道。
Scientists use this method with animals; by making their cells radioactive they can then measure the rate of cell turnover, only it is unethical to do this in humans.
用放射性受体结合实验进行受体活性的测定和结合区域的分析。
The binding ability and binding domain of receptor to ligands were determined by radioactive ligand and receptor binding experiments.
目的应用螺旋ct肺密度测定软件，根据肺密度变化，找出与放射性肺损伤之间的相关因素，探讨其应用价值。
Objective To evaluate lung density variation in radioactive lung injury by lung density detecting software of helical ct.
应用推荐