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In this paper, three kinds of hydroxyl component are prepared for two-component waterborne polyurethane paint, that is, acrylic dispersion, acrylic emulsion and silicone-modified acrylic emulsion. The influence of the composites of these dispersion and emulsions on polymerization process, viscosity, particle size and coagulum are investigated, infrared spectroscopy , inductance coupling plasma , transmission electron microscopy and thermogravimetric analysis are used to characterized their structure, composite, morphology and thermal stability, respectively.

本论文制备了三种用于水性双组分聚氨酯涂料的含羟基组分，即丙烯酸分散体、丙烯酸乳液和有机硅改性丙烯酸乳液，研究了这些分散体和乳液在制备过程中聚合物的羟值、酸值、玻璃化温度、乳化剂、反应温度等对聚合转化率、凝聚物含量、聚合物粘度和粒径的影响，用红外光谱、热重分析、透射电镜和感应偶合等离子技术表征了其结构、组成、形态和热稳定性。

The results show nano-scale emulsion, stable polymerization and good performances if the SLS is mixed with OP at mole ratio of 2 to 1; the amount of compound emulsifier is 4% and the solid content of emulsion is 40%.

结果表明，当乳化剂为SLS/OP复合乳化体系、其物质的量的比为2∶1、乳化剂用量为4%、乳液固体含量为40%时，可以得到纳米尺度的苯丙乳液，聚合反应稳定性和乳液性能良好。

DGalp and T, 1, 2-, 1, 3-, 1, 5-, 1, 2, 5-, 1, 3, 5-Araf are linked as arabinogalactan type I , arabinogalactan type Ⅱ, galactan and arabinan at the cite of O4 of Rha in the form of the side chain.

由T-、l，6-、1，3，6-、1，4-、1，4，6-DGalp和T-、1，2-、l，3-、1，5-、1，2，5-、1，3，5-Aaraf聚合成的AGI型阿拉伯半乳聚糖、AGⅡ型阿拉伯半乳聚糖、半乳聚糖以及阿拉伯聚糖，构成了HAM-3-Ⅱb-Ⅱ的侧链部分，通过Rha残基的O4位与主链相连。

The fusant F-K6-lm4208 can't make gelatin liquefy,but can hydrogenize the nitrate,and ferment maltose, xylose, glucose, fructose, cellobiose, lactose, glucopyranoside, sorbose and mannose,but can't ferment rhamnose,aesculin and salicin.

对本实验室保存的反刍兽月形单胞菌K6及分离鉴定的粘膜乳杆菌lm4208进行了菌株生长曲线绘制，确定了粘膜乳杆菌lm4208及反刍兽月形单胞菌K6的对数生长期，粘膜乳杆菌lm4208对数生长期为4~12h，反刍兽月形单胞菌K6对数生长期为8~16h。

Taking all the results mentioned above into consideration it is reasonable to conclude that the β-turn in the second hairpin of chymosin play a crucial role in determining the stability of prochymosin and pseudochymosin.

根据以上一系列结果，有理由认为凝乳酶第二个β-发夹结构的β-转角在决定凝乳酶原和假凝乳酶的稳定性中起至关重要的作用。

Chymosin was expressed in Pichia pastoris successfully, and a strong band at about 37 kD was shown by SDS-PAGE. Activity tests showed that the chymosin activity of the culture supernatant was 12.2 SU/mL.

在甲醇诱导下进行凝乳酶的表达， SDS-PAGE分析证明重组凝乳酶的分子量约为37 kD，培养基上清液中凝乳酶的活性为12.2 SU/mL。

Colostrum Microfiltrate is supported by a number of process patents that cover the production of concentrated colostral wheyfractions using minimal heat. This process uses microfiltration instead of pasteurization, which can destroy beneficial components.

初乳精华Colostrum Microfiltrate 拥有许多专利制程，能以最低温度，有效保护浓缩的初乳，这项制程以专利低温萃取技术取代传统的巴斯德杀菌法，而能有效保护初乳中的有益成分不受破坏。

DC have been studied by using the cytochemical methods. The results showed that the cytoplasm of the haustorial cells, the degenerating sites of integumentary cells and nucellar cells surrounding haustorial cells showed strong PAS staining.

DC的胚乳吸器进行了细胞化学研究，结果显示，胚乳吸器的细胞质、胚乳吸器周围解体的珠心细胞和珠被细胞均呈强PAS正反应。

The stability of isophorone disocyanate and the affecting factors of in-situ miniemulsion polymerization have been studied to carry out the simutaneous or two-step procesure of polyaddition and radical polymerization.

本文主要研究了水敏性单体IPDI的稳定性和原位细乳液聚合规律，探索在细乳液中分步或同步实现缩聚反应与自由基聚合的新方法，提出了水敏性单体的细乳液聚合实施方法。

No difference were found for daily milking yield for among three groups also no difference for milk fat percentage between one fourth wild and domestic yak,but the milk fat percentage of semiwild is lower than that of o...

经q检验，3组的日均挤乳量和1／4野血牦牛与家牦牛的乳脂率均差异不显著（P＞0.05），而1／2野血牦牛因野性较大，难以挤净含脂较高的二奶，以致乳脂率低于其它两组。

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。