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This experiment with dilute alkali swelling on collagen extraction and separation, then purified by gel from collagen, and then glutaraldehyde, carbodiimide, has three types of di-isocyanate cross-linking agent on the plastic recombinant protein molecules cross-linked, the final test of infrared spectroscopy analysis of the results of their cross-linking to determine the extent of the effectiveness of cross-linking cross-linking agent to have an initial understanding.

本实验用稀碱溶胀法对胶原蛋白进行提取与分离,接下来用凝胶层析纯化所得胶原蛋白,然后用戊二醛、碳化二亚胺、己二异氰酸酯三种交联剂对胶原蛋白分子进行重组交联,最后通过对红外光谱测试结果的分析,对其交联程度进行判断,对交联剂的交联功效有一个初步的了解。,谢谢。

The results show that the decay of retinol and retinyl acetate are much faster in anionic micelles than that in cationic micelles and neutral micelles(TX-100), which indicate that the decay is carried out by the protonation of retinol or retinyl acetate first, then one molecular water or acetic acid is lost to produce the carbonium ion, which release the proton followed to generate the anhydroretinol.

数据显示,维生素A及其乙酸酯在阴离子胶束溶液SDS中的衰变速度要远大于在阳离子胶束溶液CTAB和中性胶束溶液TX-100中的衰变速度。

The castor oil based polyurethane potting materials were synthesized from castor oil,4,4 diphenylmethane diisocyanate,trimethylolpropane and 1,2 propanediol.

以蓖麻油,4,4' -二苯基甲烷二异氰酸酯、三羟甲基丙烷与 1,2 -丙二醇为原料合成了蓖麻油基聚氨酯灌封胶,研究了灌封胶的固化流变行为和凝胶化时间。

The results showed that MGM had good spherical shape and narrow size distribution,and the particles with diameters ranging from 0.13 mm to 0.28 mm were about 91 wt%.The surface hydrophilicity of Fe3O4 microcrystal was improved by formamide dispersing treatment.The gel particles made by the copolymerization of glycidyl methacrylate and N,N′-methylene bisacrylamide could encapsule Fe3O4 microcrystal to produce colloid cores,and uniform and stable MGM microspheres were formed by the conglomeration of the colloid cores.

结果表明,合成的MGM呈球形,且粒度分布较窄,粒径为0.13~0.28 mm的粒子占91%;甲酰胺分散Fe3O4,微晶表面的亲水性进一步增强,单体甲基丙烯酸缩水甘油酯和 N,N′亚甲基双丙烯酰胺交联共聚生成的胶粒能够包埋Fe3O4微晶形成胶核,胶核聚集形成均匀、稳定的MGM微球。

DSC analysis found that the behavior of PSPI-TM film containing TiO〓of 12% was greatly different from that of the corresponding ester-typePSPI film. An intense exothermal change was found on the DSC curve. TGAanalysis indicated that the curve for weight loss of the PSPI-TM film wouldnot reach a platform until 400℃.

DSC热分析表明含TM基于转化后PI的重量折算为12 %(w/w的Ti〓的PSPI光刻胶膜的热转变行为不同于相应的酯型PSPI光刻胶膜,在300℃附近有一个很强的放热过程;TGA分析表明这种含TM的光刻胶膜直到400℃以上才达到&失重平台&。

The impact of temperature,pH and ionic strength on the volume phase transition of the hydrogels is studied.The result shows that the volume phase transition temperature of ionizable and thermosenstive copolymer hydrogels depend upon the hydrophilic/hydrophobic character of the comonomers...

结果表明,疏水基末端端基的疏水程度决定凝胶体积相变的速率,随着疏水性单体甲基丙烯酸酯烷基链的增长,凝胶的疏水性增强,凝胶的相转变pH向低pH处迁移;温度高于LCST时,分子间的氢键作用减弱,疏水基团间的相互作用加强,凝胶发生体积相变。

In addition, the nozzle structure is complex and there are some parts of the factory of the nozzle is sealed with adhesive, glue is organic, most of the glue is impatient keto esters and organic solvents, alcohols, of course, including the nozzles on the sealant.

另外,喷头的结构很复杂,出厂的喷头有一些部位是用胶粘剂密封的,胶是有机物,大部分的胶是不耐酮酯醇类有机溶剂的,当然也包括喷头上的密封胶。

The SiO2 gel was prepared through hydrolysis and condensation polymerization of tetraethyl orthosilicate and H2O. The gel and LaNi4.25Al0.75 powders were mixed completely and heated at 500 ℃ for 2 h to obtain samples.

摘 要:以正硅酸乙酯为原料,采用溶胶凝胶法制备多孔SiO2凝胶,将LaNi4.25Al0.75合金粉与凝胶混合在500℃进行真空烧结。

The results show sheafing strength of wood glued-product produced by adhesive prepared with the optimal formulation of six starch-based API wood adhesive can completely meet requirement of JIS K6806 and each property indices of adhesive satisfy demand for the practical process technology.

其次,以复合变性玉米淀粉、乙二酸、聚乙烯醇、P-MDI为影响因素,按照日本JIS K6806标准中关于水性高分子-异氰酸酯木材胶粘剂胶接木材时的不同耐水性要求,通过正交试验,分别优化出Ⅰ型、Ⅱ型中Ⅰ、Ⅱ类的常态胶接、热水浸渍、反复煮沸胶接强度的六种淀粉基API的配方,并在对实验结果进行了验证性试验的基础上,进行了工业化生产试验。

When the compounding ratio of aliphatic resin, aromatic resin, unsaturated hydroxy acid ester, and metallic soap blends was 3:3:1:3, the homogenizing-dispersing agent THD was produced.

结果表明,当脂肪烃树脂、芳香烃树脂、不饱和醇酸酯及皂类混合物之间配比为3:3:1:3时制得的均匀分散剂THD可以改善胶料混合的均匀性,提高炭黑的分散效果,并且节约混炼能耗,增加了胶料的耐老化性能,对硫化胶的力学性能影响不大。

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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。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。