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The invention relates to a method for the extraction of keratin from dead animal skins, characterised in the treatment of dead animal skins with a substance of general formula, or at least one corresponding alkali metal, earth alkali metal, ammonium, or phosphonium salt, the variables having the following definitions: R, R = together or independently, H, C6-C14 aryl, C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, R, R = together or independently, H, C6-C14 aryl, C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, whereby at least one of R or R is not H, or R and R are not H and two vicinal groups of R to R together may be C3-C10 alkylene, R = H, C1-C12 alkyl, H-C=O or C1-C4-Alkyl-C=O, X, X, X and X = OH, SH or NHR, whereby where Rto R contains at least one sulphur atom, at least one of X to X = SH and where R to R contains no sulphur atom, at least two of X to X= SH.

本发明涉及一种从死亡动物原皮中除去角质的方法,其特征在于用通式I的物质或至少一种对应的碱金属盐、碱土金属盐、铵盐或∴盐处理死亡动物原皮,式I中各变量定义如下:R 1 和R 4 相同或不同且选自氢、C 6 -C 14 芳基和C 1 -C 12 烷基,其未被取代或被一个或多个SH或OH基团取代;R 2 和R 3 相同或不同且选自氢、C 6 -C 14 芳基和C 1 -C 12 烷基,其未被取代或被一个或多个SH或OH基团取代,其中至少一个基团R 2 或R 3 不为氢,或R 1 和R 4 不为氢,且两个相邻基团R 1 -R 4 可以一起为C 3 -C 10 亚烷基;R 5 选自氢、C 1 -C 12 烷基、H-C=O或C 1 -C 4 烷基-C=O;X 1 、X 2 、X 3 和X 4 选自OH、SH和NHR 5 ,其中若R 1 -R 4 含有至少一个硫原子,则至少一个基团X 1 -X 4 为SH,以及若R 1 -R 4 不含硫原子,则至少两个基团X 1 -X 4 为SH。

A fleshy, usually brightly colored cover of a seed,arising from the hilum or funiculus.

种皮一种肉质的,通常色彩光亮的种子皮,由种脐或胚珠柄发育而来

A fleshy, usually brightly colored cover of a s d, arising from the hilum or funiculus.

种皮一种肉质的,通常色彩光亮的种子皮,由种脐或胚珠柄发育而来

Under light microscope, on H-E stain section, four types cells can be distinguish: cells with weak basophilic fibrillar elements; cells with acidophilic granular substance; cells with strong basophilic fibrillar elements and ciliated cells. In the basal lamina region under gland epithelium, there are a few connective tissue; Surface view of the hypobranchial gland could be see by scanning electron microscope, there are cilia and different kinds of secretions distributed. Ultrastructure of the hypobranchial gland could be understand by transmission electron microscope, supporting cells, sensory cells and seven types gland cell were observed to form the glandular epithelium; cells with much rough endoplasmic reticulum,smooth muscle fiber and nerve endings were found beneath glandular epithelium, among basal lamina region.

光镜下H-E染色切片中腺上皮区仅可以区分出四种类型的细胞:弱嗜碱性纤维样细胞、强嗜碱性纤维样细胞、嗜酸性颗粒分泌细胞和纤毛细胞等;腺上皮下的基底膜区有少量结缔组织存在;扫描电镜下可以观察到鳃下腺表面的纤毛及腺细胞的分泌物等情况;透射电镜下观察到腺上皮中有支持细胞、感觉细胞和7种类型的腺细胞;近基底膜区观察到富含粗面内质网的细胞;基底膜间为薄层疏松结缔组织,内含肌细胞及神经末梢等结构。

The effects of menthol on enhanced percutaneous penetration of 16 drugs were described.

综述了薄荷醇对16种药物的促透皮吸收作用,供薄荷醇在几种透皮制剂中的合理应用作参考。

Evapotranspiration value and transpiration indexes of the three types of soil microbiotic crust under different water content(including Bryum argenteum crust,Didymodon nigrescens crust and algal crust) were measured.

通过对3种土壤生物结皮在对照和3个不同水分条件下进行蒸散量以及蒸腾指标的观测,结果表明:①3种土壤生物结皮蒸散量日变化过程呈现单峰型,各个处理间峰值出现时间和蒸散量变化幅度差异较大;真藓对照组峰值为0.473 g/10 cm2,出现时间为11:00时。

The results showed that: with the regression analysis of Betula platyphylla, Pinus koraiensis, Abies nephrolepis, Picea koyamai var koraiensis, and Betula costata, there was a significant negative correlation between neighborhood interference index and the growth (0.40~0.89) and the correlation extent depended on the neighborhood influence zone and slope. The neighborhood influence zone corresponding to maximal regression coefficient R~2 was the neighborhood influence radius. Based on the linear subsection regression between neighborhood interference index and influence zone of five species, the neighborhood interference index increased with the increasing zone and there was a previous increasing trend in a certain scope, while the increasing trend slackened beyond the zone. The neighborhood influence zone corresponding to transition point was the neighborhood influence radius. The neighborhood interference index positively correlated with the neighborhood influence zone and the range of R~2 was 0.40-0.64. With the analysis of tree cores of Juglans mandshurica, Fraxinus mandshurica at middle and lower slope in a plot which was fostered in 1995, the distance which the growth release farthest neighborhood and object stub was judged, thus the neighborhood interference radius was inferred. According to the studies, we found that the neighborhood interference radius was different among different trees, even if the neighborhood interference radius of the identical tree species also had the difference at different slopes.

结果表明:通过对白桦、红松、冷杉、红皮云杉和枫桦树种进行邻体干扰指数与生长量回归分析发现,邻体干扰指数与生长量呈显著负相关(0.40~0.89),相关程度因邻体影响范围和坡位而异,R~2达到最大值所对应的影响范围即为邻体影响半径;通过对白桦、红松、冷杉、红皮云杉和枫桦树种进行邻体干扰指数与影响范围的线性分段拟合,邻体干扰指数随影响范围的增加而增加,其在一定的范围内上升较快,而超出该范围后上升的幅度变慢,变化的转折点所对应的影n向范围可以判定为邻体影响半径,线性回归显著(0.40~0.64);通过对1995a抚育的胡桃楸、水曲柳样树进行研究,分析邻体树种的中坡位和下坡位的生长锥芯,判断产生生长释放的最远邻木与基株树桩所对应的距离,推断邻体影响半径;根据研究发现,邻体影响半径因树种不同有一定的差异,即使同一树种的邻体影响半径在不同坡位也有一定的差异。

The compounds were identified by physical and spectroscopic techniques.Result:Six compounds were isolated and identified as 4,4′-biisofraxidin(1),esculetin(2),fraxetin(3),scoparone(4),isofraxidin(5),scopoletin(6),respectively.Conclusion:Compound 1 is a novel natural product.

结果:首次从草珊瑚干燥全草中分离得到6种具有抗菌活性的香豆精类化学成分,分别为4,4′-双异嗪皮啶(4,4′-biisofraxidin,1),秦皮乙素(esculetin,2),秦皮素(fraxetin,3),滨蒿内酯(scoparone,4),异嗪皮啶(isofraxidin,5),东莨菪内酯(scopoletin,6)。

Results The expression of p16 was significantly higher in CIN than in normal cervixes(P.01),It was significanthly hi...

结果p16蛋白在CIN中的表达高于正常宫颈上皮(P.01),在宫颈癌中的表达也高于正常宫颈上皮(P.01),且高于CIN中的表达(P.05);bcl-2蛋白在CIN中的表达高于正常宫颈上皮(P.01),在宫颈癌中的表达也高于正常宫颈上皮(P.01),但与CIN中表达无差异。p16和bcl-2两种蛋白在CIN和宫颈癌中的表达无明显差异。

The main differences are: first, Kohlberg lays emphasis on describing the characteristic of moralthinking development in different stages, rather than on the process of thinking formation. Piaget studies ,emphatically the process of thinking formation, secondarily the desciption of the processs characteristic; Secondly, on the factors of influencing moral development, Kohlberg put high stress on the social-congnition factor, nevertheless Piaget neglecs it. Thirdly, Piaget focusses purely on theory study, but Kohlberg on theory study and using the study in education as well.

二者的差异性主要体现在:第一,科尔伯格研究的重点放在对道德思维发展的不同发展阶段的特征的描述上,而非思维形成过程本身,皮亚杰研究重点在于思维形成过程本身,对过程的特征的描述在其理论中只占第二位;第二,关于影响道德发展的社会认知因素,科尔伯格给予了高度重视,皮亚杰却忽视了,这损害了皮氏学说的科学性与完整性;第三,皮亚杰的研究是一种纯理论研究,而科尔伯格不仅重视理论探求,更强调应用研究。

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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。