二酸的

Furthermore, the important fragment which is composed of pentenyl cinnamic acid and D-Tyrosine, and the ester which is composed of L-N-methylated phenyl amino acid and diketopiprazine was synthesized with considerable yield The conjugation of the new DOPA analogue into the peptide in the total synthesis of Pepticinnamin E was investigatited

另外，本文作者还进一步合成了高收率的戊烯基肉桂酸衍生物与D-酪氨酸的缩合片段及L-N-甲基苯丙氨酸与哌嗪二酮的酯两个重要的结构组成部分；对新多巴衍生物片段嵌入肽链中的工作亦进行了有益的尝试。

The reactions of ethylenedinitrourea with ethylenediamine or with polyether were studied.

根据乙撑二硝基脲降解生成乙撑二异氰酸酯中间体的性质，研究了它与乙二胺的反应，并进行了硝化反应研究。

In this paper, we mainly studied the design of a new oscillating system and...

其中L为5，7，7，12，14，14—六甲基—1，4，8，11，—四氮环杂十四—4，11—二烯，并将此化学振荡应用于酪氨酸、色氨酸、半胱氨酸的测定，结果令人满意。

CoA by strengthening TCA pathway, and the methylmalonyl??CoA is formed from succinyl??CoA by isomerization. Finally, methylmalonyl??CoA can be used as the precursor for the biosynthesis of erythromycin.

餐？戊二酸，再生成琥珀酰CoA，琥珀酰CoA在甲基丙二酰CoA异构酶的作用下生成甲基丙二酰CoA作为红霉素合成的前体。

Corn starch was treated by cross - linking using mixed acid of adipic acid and acetate .

采用已二酸和醋酸酯的混合酸交联处理玉米淀粉，然后对交联淀粉水浴加热至80℃制备非晶颗粒态淀粉。

The effects of DCPD and adipic acid content on product properties are investigated and the properties of DCPD-type-UPR and 191# UPR are cont rasted.

考察了双环戊二烯、己二酸加入量对双环戊二烯型不饱和聚酯树脂性能的影响，并与通用191#树脂的性能进行了比较。

Topical tretinoin,hydroquinone,Azelaic Acid,and kojic acid and various types of epidermal peels have been employed with variable degrees of success.

外用维甲酸、氢醌、壬二酸，曲酸和化学剥脱术已经获得了一定程度的成功。

It is to be understood that when in this Specification we speak of a dialkyl carbonate and similarly of a dialkyl phenylmalnate, that term does not imply that the two alkyl groups are necessarily the same.

有一点要理解：在说明中我们提到二烷基碳酸酯，相似的我们还提到了二烷基苯基丙二酸酯，这两个术语并不是暗示这两个烷基官能团必须是一样的。

Then the catalysts of high activities were selected to be used in the preparation of mixed dibasic acid dimethyl esters.Mixed dibasic acids are byproducts of hexanedioic acid. In this article DBE were synthesized.

己二酸生产过程中副产大量的混合二元酸，本文选用DBA和甲醇为原料，分别采用磷钨杂多酸、PW_(12)/C和PW_(12)/SiO_2为催化剂，合成了绿色环保高沸DBE。

The free bile acid and dihydroxy bile acid glycine union(exisistence by the of non-ionic form ) also be absorb again through the simple proliferation way.this may occurs in any part of the small intestine and colon.

未结合的胆汁酸和二羟基胆汁酸的甘氨酸结合物，也过简单扩散的方式被重吸收。这种通过小肠膜的非离子化扩散可在小肠的任何部位及结肠发生。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。