他们用布鲁尔氏酵母的物质，测试了这种化学提取物。
They tested the chemical extracts of the plants on a substance called Brewer's yeast.
使用逐级化学提取方法对岩石中氟元素的化学活动性进行了研究。
Sequential extraction experiments were used to study the chemical mobility of fluorine in rocks.
科学家说，在接触到这种化学提取物之后，这种酵母的健康大有改善。
Scientists say the health of the yeast improved greatly after exposure to the chemical extracts.
本文综述了从植物中提取果胶的各种方法，包括化学提取法和生物提取法。
In this paper, the methods of pectin extraction and purification from plant tissues, including chemical and biological methods, are introduced.
本发明公开了一种制备烟用香料的挥发油提取装置，属于化学提取设备技术领域。
The invention discloses a volatile oil extractor for preparing a cigarette flavor, which belongs to the technical field of chemical extracting equipment.
目前，评价土壤中金属植物有效性的方法主要有：化学提取法、植物吸收试验、微生物和酶活性试验及同位素法。
The main methods now to evaluate Pb availability in soil are chemical extraction, plant adsorption, microbial and enzyme activation and isotopes tests.
植物提取物是以植物为原料，经过一系列物理、化学提取过程，得到的由一种或多种天然活性成分构成的植物产品。
Plant extracts (PE) are phytogenic products consisting of one or more types of natural active ingredients, which come from physical or chemical extraction of natural plants.
通过化学方法从灰烬中提取镍，他们每英亩土地生产了100磅镍，每磅的总成本略高于目前的采矿成本。
By chemically extracting nickel form the ash, they produced 100 pounds of nickel per acre of land at a total cost per pound slightly above that of current mining.
研究人员从小麦中提取的一种化学物质可以抵制菟丝子，所以有可能找到新办法来抗击这种杂草。
The researchers isolated a chemical in wheat that repels dodder. This could lead to new ways of fighting the weed.
从一些植物中(包括苹果皮)能提取出一系列化学物质，在用于对抗阿尔兹·海默症方面很有前景。
A group of chemicals made by some plants, including in apple skins, have promising characteristics in fighting Alzheimer's.
相对于单独使用，研究人员利用这些从植物中提取的天然复合物的结构特性，开发了一种新的化学物质，即2 - ACP。
Instead, the researchers used the structure of these natural plant compounds to develop a new chemical, called 2-acp.
首先提取数百条DNA，然后用化学方法改变其形状，让它们在不同的点粘结起来。
First take a few hundred strands of DNA, then chemically alter them so they will bond at various points.
而骨骼提取物也符合四环素等化学特征——这一证据表明这种抗生素是在儿童成长过程中沉积于骨骼里的。
And this bone extract also matched the chemical signature of tetracycline — evidence that the antibiotic was built into the kid's bones as he grew.
尽管各地区提取元素方法不同，但是都需要一些剧毒化学物质。
Although the extraction process in each location differs, they share a need for highly toxic chemicals.
也因为它的稀有，值得人们从一块块的岩石中挖出来，然后用有毒的化学制剂将其提取出来。
And because it is so scarce, it is worth digging out a lot of rock to get at it, and using poisonous chemicals to extract it from that rock.
此前，罗格斯大学的研究人员在第233届美国化学学会的国际会议上告诉与会者，蓝莓提取物可以降低患大肠癌的风险。
Previously, researchers from Rutgers University told attendees at the 233rd national meeting of the American Chemical Society that extracts may reduce the risk of colorectal cancer.
骨头中四环素的提取过程，也显出其化学特征——所有的证据都是建立在所提取的幼儿木乃伊的骨头的基础上。
And this bone extract also matched the chemical signature of tetracycline-evidence that the antibiotic was built into the kid's bones as he grew.
他们确定了从线粒体基因组提取的一个368碱基对片段的化学结构序列，并且把它与古代犬以及现代犬、狼和郊狼的序列进行了比较。
They sequenced a 368 base pair fragment from the mitochrondrial genome and then compared it to sequences from ancient dogs, as well as to sequences from modern dogs, wolves, and coyotes.
它们最初的提取物曾获2008年诺贝尔化学奖。
Their original extraction was rewarded with the Nobel prize for chemistry in 2008.
然后他们从细菌中提取出dna，利用高解析二次离子质谱技术分析了其中的化学组成，发现DNA中也含有砷。
They also separated out the DNA from the bacteria and analyzed its composition using a technique called high-resolution secondary ion mass spectrometry; the isolated DNA contained arsenic.
新的加工过程所带来的进步不仅仅是从植物来提取燃料到提取化学制品。
The new process goes beyond making fuel from plants to make industrial chemicals from plants.
在这里，机器自动取出唾液样本，进行化学处理提取捐献者的DNA。
Here, the robots draw out a sample of spit, and chemically process it to extract the donor's DNA.
在服用保健品前，消费者应查看其成份，并检查草本植物提取物、维他命或矿物质之间是否可能产生化学反应。
Before they take a supplement, consumers should also check for potential interactions between any herb, vitamin or mineral and their prescriptions.
错误。没有区别，不管是在实验室制造的还是从动植物身上提取出来的维生素，其性质和具体的化学结构都一样。
False. There is no difference. A vitamin has the same properties and specific chemical structure whether made in a laboratory or taken from plant or animal parts.
方法：采用物理及化学方法提取有效成分并用薄层色谱法进行鉴别。
Methods: The effective constituents was extracted by physical and chemical ways and identified by TLC.
目的鉴别不同工艺提取的龙血竭中化学成分的差异。
Object To identify the differences of chemical constituents of Dragon's Blood obtained by different extract processing.
这些化学物质或提取物似乎可以用危害较轻的沉积物，来替换这些有害的粘性斑块。
Scientists say the chemicals — or, extracts — appear to replace the harmful, sticky plaque with deposits that are less harmful.
这些化学物质或提取物似乎可以用危害较轻的沉积物，来替换这些有害的粘性斑块。
Scientists say the chemicals — or, extracts — appear to replace the harmful, sticky plaque with deposits that are less harmful.
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