衍生物

In order to enhance wax on paper fibers of adhesion, the water is often Rosin derivant or carboxylated polymer emulsion, they are both on the paper fibers have very good adhesion, and wax and better compatibility.

为了增强蜡对纸纤维的附着力，在拔水剂中往往有松香衍生物或羧化高分子乳液，它们既对纸纤维有很好的粘附力、与蜡又有较好的相溶性。

This product is made from amylaceum, a derivant of starch and natural aliphatic alcohol. Except for possessing the outstanding features of traditional surface active agent, the product is also characterized of nontoxic , non-irritative to skin and eye, easy to biodegradation and so on. It's a kind of nontoxic and environmental protection living up to the requirements of human safety and environmental protection.

该产品以淀粉衍生物葡萄糖和天然脂肪醇为原料制成，具有传统表面活性剂的优异性能外，还具有无毒、对皮肤眼睛无刺激，易于生物降解等独特的性能，是符合人体安全和环境保护要求的无毒、环保原料。

DFA-PEG polyester and its derivant were novel macromolecule surface activityreagent, its molecule contains special structural hydrophilic and lipophilic group.

DFA-PEG聚酯及其衍生物为新型的高分子表面活性剂，其分子中含有特殊结构的亲水亲油性基团。

Said chemical matter comprises compound containing ammonium and halogen atom absorption, and lower carbon number hydrocarbons containing halogen atom and it's derivant; it can be used separately or together with urea, ammonia gas and natural gas.

这些化学添加物包括含有铵和卤原子的化合物、含有胺及卤原子的化合物以及含有卤原子的低碳烃及其衍生物，可以单独使用或与尿素、氨、天然气等主还原剂混合使用。

The preparation of grafted derivant of tertiary amine: it is prepared by the reacting of above (1) product and (2) product heated in water bath at 40℃ within 10min.

聚环氧氯丙烷乙二醇哌啶接支衍生物的制备：将上面制备的聚环氧氯丙烷乙二醇与0.25mol环氧丙基哌啶叔胺于40℃水浴条件下进行接支反应。

Nitric oxide and NO metabolism derivant 3-NT significantly attenuatesα_1-ARs gene expression in SMCs during inflammatory response, this is one of possible pathophysiological mechanisms of vascular hyporeactivity during endotoxic shock.

结论一氧化氮及NO衍生物3-NT均显著抑制了血管平滑肌细胞细胞α_1-肾上腺素受体mRNA的表达，可能为感染性休克时血管低反应性的病理机制之一。

BACKGROUND: Chitosan and its derivant are environmental-friend natural macromolecular materials, characterizing by great flocculation and adsorption capacities caused by electrophilic group including amino and hydroxyl groups, as well as its long-chain molecular structure. So chitosan is widely used as flocculants in domains of sewage disposal, food refining as well as Chinese medicine purification.

背景：壳聚糖及其衍生物是环境友好的天然高分子材料，其分子中丰富的带电基团如氨基、羟基以及长链分子结构赋予其优良的絮凝吸附能力，被作为絮凝剂广泛用于工业用水、食品精制以及中药液纯化等领域。

Ermcidin is a new antibacterial peptide recently found from human sweat glands, and DCD-1L is a derivant of Dermcidin which has a broad spectrum of activities against Gram negative and positive bacteria.

CD是最近从人汗腺中发现的抗菌肽，DCD-1L是它的衍生物，能够有效地抗革兰氏阴性细菌和革兰氏阳性细菌，具有广谱的抗菌活性。

The tribological properties of the prepared UFD phosphate derivant in the water-base solution were evaluated by using a four-ball friction wear testing machine.

利用四球摩擦磨损试验机研究了化学修饰后纳米金刚石磨粒在水基基础液的摩擦学行为，发现基础液中纳米金刚石磨粒磷酸酯衍生物浓度为0。

Methods: In alkaline condition, reaction between amino acids and phenylisothiocyanate formed a derivant of phenylisothiocyanate-amino acid. For RP-HPLC, the Diamonsil C18 column 250 mm×4.6 mm,5 μm） and binary gradient elution were used. The mobile phase A was 0.1 mol/L sodium acetate solution-acetonitrile (93∶7） and the mobile phase B was acetonitrile-water（80∶20）. The detecting wavelength was 254 nm.

在碱性条件下，氨基酸与异硫氰酸苯酯反应，生成异硫氰酸苯–氨基酸的衍生物，采用 Diamonsil C18色谱柱（250 mm×4.6 mm，5 μm），用二元梯度洗脱方式，流动相A为0.1 mol/L乙酸钠–乙腈（93∶7），流动相B为乙腈–水（80∶20），检测波长254 nm。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。