衍生物

BIO-BEAUTE commits to selecting only 100%pure natural extracts: no silicone, no PEG, no petrochemical derivatives, no genetically modified organisms, no artificial coloring agents, no parabens, no EDTA, no formaldehyde, no products with ethoxyl derivatives, no phenoxyethanol.

BIO-BEAUTE 保证选择100%的纯净天然提取物：无硅胶、无聚乙二醇、无石油化学衍生物、无转基因有机体、无人工着色剂、无苯甲酸酯类、无乙二胺四乙酸、无甲醛、无羟乙基衍生产品，无无苯氧乙醇。

Methods The propylbridged biferrocenyl substituted pyridazinone was synthesized by the reaction of propylbridged biferrocene with ethyl succinyl chloride, and then condensed with hydrazine hydrate.

双二茂铁丙烷先与丁二酸单乙酯酰氯发生酰化反应，生成的1，4酮酸酯再与水合肼缩合得到含有双二茂铁丙烷的哒嗪酮衍生物。

Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5NH2, that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by a hydrocarbon radical.

胺一组被认为是氨之衍生物的含氮有机化合物中一种，如乙胺，c2h5nh2，其中一个或一个以上的氢原子被烃基所取代

The copolymerization compound comprises based on a proportioning ratio by weight: 25-99 percent ethylene aromatic series monomer; 0-30 percent olefinic undersaturation nitrile monomer; 1-50 percent olefinic dibasic acid ramification monomer.

这种共聚组合物按重量百分比包含：25至99％的乙烯基芳香族单体；0至30％的烯属不饱和腈类单体；1至50％的烯属二元酸衍生物单体。

Besides the SWCNTs, Fullerene C_(60) and its derivatives have also aroused exhaustless interests of researchers ever since their discovery, not only because of their fantastic properties, but also because of their promising utility foreground as new material.

除碳纳米管以外，以C_(60)为代表的全碳分子及其衍生物材料，同样由于其奇特的物理化学性质和广泛应用前景而备受研究人员的关注。

Sidney Farber finds that a folic acid derivative inhibits acute leukemia.

1947年Sidney Farber发现一种叶酸衍生物可以抑制急性白血病。

Attempts to shore up the value of a derivative without shoring up the value of the assets from which they ultimately derive their value are likely to be in vain however cleverly we may try to finagle.

无论我们怎样巧妙地瞒山过海，那种只注重衍生物的价值而忽略最终让我们获利的资产的价值的尝试大都是徒劳无益的。

Ribose 5-phosphate and its derivatives are components of important cellular molecules such as RNA, DNA, NAD+, flavine adenine dinucleotide, ATP and coenzyme A.

5-磷酸核糖和它的衍生物是细胞内分子如RNA、DNA、NAD+、黄素腺嘌呤二核苷酸、ATP和辅酶A的主分成分。

Becausethe ginger flavine and its the synonym have many kinds of pharmacologyactiveness, at present, conducted the research take this kind ofcompound as the forerunner which the structure optimized to cause inthe world scope chemist and the medicine scientist's widespreadattention, take the ginger flavine as the raw material, first had thefunction production corresponding sodium salt in the organic solventby NaOH or NaOEt and a-H, then and 卤代烃carried on the substitution reaction, the response condition which theresearch optimized, and grew this derivative monocrystal with thesolution law.

由于姜黄素及其类似物所具有的多种药理活性，目前，以该类化合物为先导进行结构优化的研究引起了世界范围内的化学家和药物学家的广泛关注，以姜黄素为原料，先在有机溶剂中以NaOH或NaOEt与a-H发生作用生成相应钠盐，再和卤代烃进行取代反应，研究优化的反应条件，并用溶液法生长该衍生物单晶体。

This article focuses on introducing the research of chitosan and its derivatives in water supply, industrial wastewater,sewage, sludge, food industry and the medicine production in recent years and looking ahead to the chitosan as a flocculent in future.

本文着重介绍了近年来壳聚糖及其衍生物在给水、工业废水、生活污水、污泥及食品、医药生产中的应用研究，并对壳聚糖作为絮凝剂的研究进行展望。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。