(OMITTED) It's still low prevalence, but you know we've just put out the synthesis report, which was an epidemiological study of HIV and its evolution in the region, and the report says that probably, at least for the near future, we'll never have an epidemic of HIV in the region.
VOA: standard.2010.07.07
So either a potassium cyanide or sodium cyanide, these are used in synthesis in terms of making carbon-carbon bonds.
因此无论是氰化钾还是氰化钠,都被用来在合成过程中,制造碳碳键。
try and come to some middle ground synthesis based on everyone's ideas.
最后,折衷考虑所有人的观点,形成一个综合的论点。
Other than just in poisons and in organic synthesis shells, you might also find them in some things we're more familiar with, such as almonds.
除了在毒药以及有机合成的容器中,你可能还会在我们更熟悉的,东西中找到它们,比如杏仁。
He invented ammonia synthesis with catalysis by iron.
它发现了铁催化合成氨的催化反应。
That's one of the properties of mitosis, that the DNA gets completely duplicated during the S phase, during DNA synthesis phase.
有丝分裂的一个特征,就是DNA在S期内完全复制,S期就是DNA合成期
The reason this fulfillment is important and can be valued is, - according to Richards, that these needs-- unless they are organized or harmonized so that they work together in what he sometimes calls a "synthesis"-- can actually tear us apart.
这种满足之所以重要而有价值是因为,根据Richards的观点,我们的需求-,如果没有被和谐地组织起来,形成一个综合体-,它们会将我们粉碎。
So, for example, just talking about hydrogen cyanide or the cyanide anion, these are both molecules which are used in organic synthesis, so particularly the cyanide anion and salts of the cyanide anion.
那么,比如,就拿氰化氢,或者氰离子来说,它们都是用于有机合成的分子,特别是氰离子和氰离子的盐。
But in terms of drugs that don't look like maybe this compound was used in the synthesis, many of them might have used thionyl chloride, because it generates such a nice reactive intermediate that you can go on and make a bunch of different compounds from that intermediate.
但是对于药物来说,它们可能跟合成过程中用到的这种化合物并不相像,很多药物的制造过程中都会用到亚硫酰氯,因为它能产生活性如此之高的反应中间体,以至于你可以继续利用反应中间体,来制造一堆不同类型的化合物。
So, for example, Wellbutrin, it is very unlikely that it would have thionyl chloride in order to make it, and if thionyl chloride was used at some point in the synthesis, it was not to put that chlorine atom on, it was to put something else on.
比如,安非他酮,用亚硫酰氯来制造它,是不太可能的,而就算在合成过程中的某一阶段用到了亚硫酰氯,它也不会把氯原子加进去,而是把其它东西加进去。
G2 is a phase that indicates the gap between when DNA synthesis occurs and when the next mitotic event occurs.
2期是在DNA合成期完成后,到分裂期开始前的间期
That's synthesis and that has to happen in order for cells to replicate and cell replication is happening in your body all the time.
这个DNA合成过程是,细胞复制中不可或缺的部分,细胞复制时刻不停的在你身体里进行着
What's shown here is what's called a replication fork in DNA that's undergoing synthesis.
这里展示的是在DNA合成过程中,形成的DNA复制叉
It does that through a process of DNA synthesis.
这个过程是通过DNA合成来完成的
When they separate, the primers that you've added automatically bind through the process of hybridization, and then you turn up the temperature to the optimum for Taq polymerase and DNA synthesis starts.
当双链解旋后,加入的引物就会在杂交的步骤中自动,和解旋后的DNA结合,然后你再将温度升高至,Taq酶的最适温度,DNA就开始合成了
In order to have DNA you have to make DNA and your cells are continually making DNA inside your body, through a process of DNA synthesis and that synthesis is occurring because of the presence of an enzyme, a protein called DNA polymerase.
为了使每个细胞都具有DNA,身体通过一个叫做DNA合成的过程,不停的生产DNA,这个合成过程是在,一种酶的催化下进行的,这种酶叫做DNA聚合酶
Synthesis always occurs in one direction and that makes sense to you now because you know there's a directionality and the chemistry is different going one way than the other and this DNA polymerase only works on the chemistry going in one direction.
NA复制过程是单向的,现在你们该明白原因了,因为DNA单链有方向性,DNA在两个方向上化学性质不同,DNA聚合酶,只在一个方向上起作用
A lot of the examples that we're going to give you in terms of trying out your Lewis structures will be molecule that are used in organic synthesis, or maybe they're molecules that react in interesting ways with biomolecules in your body or proteins in your body.
很多我们将要用来,训练路易斯结构的例子,都是在有机合成中用到的分子,也有可能是那些在你体内的生物分子,或者蛋白质中发生有趣反应的分子。
So, for example, this is the synthesis of novacaine.
比如,这合成的是奴佛卡因。
Let's talk about DNA synthesis for a minute.
下面简要介绍一下DNA的合成
应用推荐