疏

The effect of hydrophobic additive on the seed precipitation from sodium aluminate solution was studied by adding fatty acid and heneicosane at different proportions. The results show that when the mass fraction of fatty acid is in the range of 32%-49% and the additive concentration in sodium aluminate solution is 150×10-6 g/L, the rate of precipitation increases, but the particle size of Al3 and Al2O3 reduces.

摘 要：研究了疏水性添加剂脂肪酸类阴离子表面活性剂与21-碳烷不同配比对铝酸钠溶液分解产生氢氧化铝和氧化铝的粒度、强度及分解率的影响，考察了产物Al3和Al2O3的强度和粒度之间的关系，探讨了添加剂影响铝酸钠溶液晶种分解的相关机理。

Main stem undeveloped, short, with basal, rosulate leaves; fertile stems 2--4, arising from base of main stems, usually erect, sometimes ascending, to 50 cm. Basal leaves with sheath sparsely hirsutulous throughout, sometimes proximal ones hirsute only along mouth slit; blade linear, 15--35 × 0.6--1.5 cm, glabrous.

根状茎无。不发达的主茎，短，基部的具，莲座丛叶；能育茎2-4，生于主茎基部，通常直立，有时上升，在厘米基生叶具鞘疏生全部，叶片线形， 15-35 * 0.6-1.5 厘米，无毛。

Stems densely rigidly hairy in lower part; leaflets abaxially densely pubescent or tomentose-pubescent between veins, sparsely glandular punctate, adaxially hirsute or hirtellous on veins.

浓密刚硬的茎有毛的在下部；在脉之间的背面的小叶密被短柔毛或被绒毛短柔毛，具点的疏生腺体，正面具粗毛或在脉上。 1b var。 nepalensis 黄龙尾

Herbs ca. 1 cm tall, sparsely short hispid or subglabrous.

草本约1厘米高，疏生或近无毛。

Stems frequently several from base, 16-20 cm tall, densely nearly spreading hispid and sparsely bristly, or glabrous on lower parts.

茎经常数个自基部，16-20厘米高，开展的糙伏毛和疏生具刚毛，或无毛在下半部分上的浓密近。

Pedicel less than 0.8 mm, elongated to 5 mm, pendulous in fruit, stout, sparsely short hispid. Calyx ca.

花萼约1.5毫米，在果期对3毫米；在外面的裂片狭三角形，疏生短柔毛，具缘毛的沿边缘。

Stems sparsely hispidulous; perianth red above; leaves without peppery taste.

茎疏生短硬毛；在上面的花被红；没有胡椒味的口味的叶。

Six experimental stages were designed in our procedure, those are:(1) metabolite recovery and tested sample preparation: the metabolites were recovered by Amberlite XAD-2 absorption, followed by MeOH elution and solvent concentration;(2) antioxidant detection and strain selection: samples were quantitatively analyzed by the inhibition effects on formation of lipid peroxides and TBARS to screen the strains able to produce antioxidants. According to the established screening methods, we chose out a strain of actinomycetes, designed as AMBL-029C;(3) antioxidant purification: the fermentation broth was recovered by a series of separation techniques including centrifugation, Amberlite XAD-2 absorption, followed by MeOH elution and a successive TLC purification. The resulting primary purified compound [temperately designed as AMBL-029C-TS] was further analyzed by HPLC to monitor its purity;(4) physical-chemical characteristics: judging from the acid-base fractionation experiments, and the pH and temperature stability tests, the compound was deduced to be a acidic compound with the properties of low polarity and highly pH and temperature stable;(5) mechanism of the antioxidant: in comparison with some other known antioxidants, TS was subjected to investigate its antioxidant mechanism, together with BHT,-tocopherol, as well as two streptomyces metabolites, homogentisic acid and -phenylpyruvic acid, which were previously isolated as the natural antioxidants in our laboratory.

针对本实验目的，我们设计了以下的实验步骤﹔（1）二次代谢物回收及检测样本处理：我们将发酵所得的培养上清液，利用疏水吸附性树酯Amberlite XAD-2吸附回收，并以甲醇溶离及真空减压浓缩脱水等方式处理，以取得提供抗氧化活性筛选之检测样本；（2）抗氧化活性检测及菌种筛选：以「过氧化脂质」和「硫丙二醯尿」的生成量进行定性定量分析以作为抗氧化物质生产菌筛选之用；经此筛选程序，我们选获了具有抗氧化物质高生产力的菌株，命名为AMBL-029C；（3）抗氧化物质的分离纯化：针对生产菌株的发酵回收处理液，以矽胶薄层色层分离法经物质层析纯化后，并以高效能液相层析法(High performance liquid chromatography；HPLC)分析物质可得一初级纯化物质，命名为AMBL-029C-TS；（4）抗氧化物质的物理化学性质分析：由酸碱转溶（acid-base fractionation）实验得知，此抗氧化物质属於中低极性的强酸性物质，对温度（37℃-100℃）及酸碱度（pH3.0-13.0）均表现出高稳定性；（5）在抗氧化机制探讨方面，我们针对数种不同的抗氧化机制进行探讨，即： 1。

Some factors, like expression stage in adenovirus and expression level in influenza, is also prominent in some viruses. In HPV and HIV, the hydropathy of the protein also plays its role, although not the main factor.

某些选择因素如腺病毒中基因的表达时相、流感病毒中基因的表达水平是比较明显地影响病毒密码子选择的因素，而在HPV和HIV基因所编码的蛋白的疏水性尽管对于病毒的密码子使用有影响，但不是最主要的因素。

Sequences from 19 randomly selected phage clones indicated that the distribution of nucleotides and amino acids paralleled the expected frequency. The combined index of hydropathy and isoelectric point of these 19 peptides were randomly distributed over wide ranges.

随机挑取了19个克隆，序列分析表明，核苷酸和氨基酸的分布与预期的基本一致。19个多肽的疏水性和等电点的综合指标分布广泛。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。