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Their cation binding behavior to alkali and heavy metal ions was evaluated by solvent extraction of aqueous metal picrates.

进而采用溶剂萃取的方法研究了它们与一价金属阳离子的键合行为。

Extraction technology of manganese and zinc from obsolescent alkaline cell and carbon-zinc battery was studied.

研究了废碳锌电池和碱性电池中金属锌和金属锰的回收。

The technology for extraction of alkaloid from lotus leaf was studied.

研究了荷叶中主要生理活性物质生物碱的提取优化工艺。

Objective To study the effects of different solvents extraction to the alkaloid content of Radix Tinosporae.

目的 研究不同提取方法对金果榄提取物中盐酸药根碱与盐酸巴马汀含量的影响。

ObjectiveTo study the effect of cellulose enzyme on extraction of alkaloid from Catharanthus roseus.

目的研究纤维素酶在提取长春花生物碱中的应用。

In order to provide a basis for the research and development of gromwell,the studies on domestic extraction of alkannin was reviewed in briefly.

对国内有关紫草色素提取的概况进行了综述，为研究和开发紫草提供依据。

Crude extracts were extracted from Sophra japonica L. with 75% alcohol. Rutin was obtained from the crude extracts by alkine extraction and acid precipitation.

用75%乙醇提取了槐花米中具有抗氧化活性的粗提物，然后通过碱提酸沉法从该粗提物中提取了芦丁，并制备了芦丁的水解产物槲皮素。

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。

The extraction of flavonoids from Allium cepa with ultrasonic wave was studied.

以洋葱皮为原料，利用超声波强化提取黄酮类化合物。

The characteristics of surface movement caused by wide strip extraction under the condition of thick alluvium are discussed as well in the paper.

宽条带小变形与大采高中小采出率。5。探讨了厚冲积层条件下宽条带开采的地表移动特点。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。