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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Structural fragments, quantum chemical indices, and hydrophobicity (octanol-water partition coefficient) were used as descriptors (properties of the molecules introduced in the model).
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The pH dependence of the distribution coefficients of these derivatives in the octanol-water system was found.
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A simple structure-property correlation equation was suggested for estimating the distribution factors of compounds in the octanol-water system.
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A simple structure-property correlation equation was suggested for estimating the distribution factors of molecules in the octanol-water system.
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The set of molecular and topological parameters includes electrotopological state of the carboxy and methyl groups, molar refractivity, refractive index, n-octanol-water partition coefficient logKo/w, surface tension, and polarizability.
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| | Investigations have been conducted on the hardening mechanism of starch and synthetic fatty acid residual composite binder by usiang DSC,SEM and dinfrared spectrum.The binder is mainly composed of α starch,dextrin,synthetic fatty acid residual and water in the ratio 2 0∶0 5∶1 5∶(2 5~4 0).The results have shown that a special nucleus/shell structure was formed during heating the binder and the transitional phase in the structure,which transmits pressure and disperses stress as a carrier,played a role i... | | 用差热分析、红外光谱、扫描电镜等测试手段,研究了淀粉合脂复合粘结剂的固化机理。该粘结剂主要由α淀粉、焙烧淀粉、合脂、水按比例2.00.51.5(2.5~4.0)组成。研究结果表明,该粘结剂在加热固化过程中,形成了一种特殊的核/壳结构,而该结构中的过渡相作为应力传送和分散的载体,起强化和耐湿作用 | | 文摘来源 | | Leprosy bacilli taken from two newly detected patients with lepromatous leprosy have been inoculated into the rear foot pads of BALB/C pure bred mice. The contents of inoculat- ed bacilli were 5×10~3 per foot pad. The mice of experimental groups have been given foods containing 0. 0001%,0. 001%,or 0.01% DDS ,or 0.05% B663 ,or agar-water containing 20 mg RMP per m1 ,respectively. The latter was given a week. Six months after the inoculation,the number of the bacilli in a foot pad of control mice reached 2. 5... | | 用取自两例新发现的 L 型病人的麻风菌,接种于 BALB/C 纯系小鼠的后足垫。接种菌量为5×10~3/足垫。实验组小鼠分别喂含有0.0001%、0.001%或0.01%的 DDS,或0.05%的 B663的食物,或者含有 RFP 20g/L 的琼脂水。后者每周喂1次。接种后6个月,对照组小鼠足垫中的菌量达到2.5×10~5,而实验组除用 RFP 的5只鼠中的1只外,全部足垫中都无麻风菌可见。作者认为此小鼠价廉、易饲养、繁殖快,可供研究麻风使用。 | | 文摘来源 | | Reversed micelle method was used to prepare titania ultrafiltration membranes. Firstly, three reversed micelle of different sizes of titania particles were prepared by using tetrabutyl titanate, water and cyclohexane, and Span-80 as a surfactant, iso-pentanol as an accessory surfactant. TEM photographs show that the size of titania reversed micelle increases with the increasing of [H2O]/[Span-80] from 13.9 to 55.5 and decreases with [H2O]/[Span-80] from 55.5 to 110.9. Pore size distributions of unsupported ... | | 采用新型的反胶团法制备了氧化钛超滤膜。实验以钛酸丁脂、水、环己烷、异戊醇及表面活性剂Span-80等为原料,通过控制水量制得三种粒径分布的氧化钛反胶团微乳液。TEM照片表明,TiO2反胶团粒子随着[H2O]/[Span-80]由13.9增加到55.5而增大,但当[H2O]/[Span-80]增加到110.9时TiO2反胶团粒子反而减小。BET法结果与TEM照片一致,而且表明[H2O]/[Span-80]为110.9的TiO2反胶团微乳液所制得的无支撑膜孔径分布最窄、最可几孔径约为4.5nm。采用该种微乳液所制得的氧化钛支撑膜的最可几孔径约为16nm, 纯水渗透率为1.57×10-4m3(m2sMPa)-1;常温下N2、H2渗透率分别为4.3mol (m2sMPa)-1和14.1mol(m2sMPa)-1,表明所得TiO2分离层较完整。 | | 文摘来源 | |   | | << 更多相关文摘 |
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