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Aureomycin on reduction with zinc-acetic acid gives desdimethylaminoaureomycin under mild conditions and desdimethylaminodesoxyaureomycin under more drastic conditions.

金霉素在冰醋酸与甲醇溶液中,用粉氢解,在温和条件下,产生脱二甲胺金霉素;较剧烈条件下,则生成脱二甲胺脱羟金霉素。

It is reported that SarA regulates the transcriptions of lipA encoding lipase, zinC encoding membrane-associated zinc metalloprotease and atlE encoding autolysin. SarA exhibiting an up-regulation on lipA and zinC, and down-regulation on atlE were demonstrated by reverse-transcription PCR and reporter gene lacZ analysis respectively.

RT-PCR和lacZ报告基因的分析结果显示,在表皮葡萄球菌ATCC35984中,SarA对atlE表达起负调控作用,而对lipA和zinC(膜相关金属蛋白酶基因)的表达则有正调控作用。

The different varieties of cold rolled strips of carbon steel with the thicknuss of 0.2-2.0mm and the width of 300-950mm can be supplied,The product sare mainly used in the fields as ba-rrel making,home applicance,miscellaneous hardware,autotruck,carriage plate for farm vehicle,light steel keel and base materials of galvanized strip.

现可提供厚度0.15-2.0mm 、宽度300-950mm ;材质为 Q195、08AL 、 Q195L 、 SPCC 、 SPCD;硬度 T2-T4的各种有光泽的或无光泽表面的高精度碳素结构钢冷轧带钢。产品主要用于:制桶、制罐、家电、日用五金、载重汽车和农用车车厢板、轻钢龙骨、镀、镀锡、彩涂板基带及深冲用材等。

Some new heat stabilizers were exploited such as rare earth, organic antimony , autunite/zinc compounds, hydrotalcite and so on.

随着环保意识的逐渐加强,传统的PVC热稳定剂如铅盐类稳定剂已受到了一定的限制,相应地开发出了一系列新型的PVC热稳定剂,包括稀土类、有机锑类、钙复合类和水滑石类热稳定剂。

The thesis investigated the effect of reation temperation, pH value, and material ratio on the chelating reation. To determine the L-aspartic acid zinc complex\' chelation ratio by orthogonal experiment, we get the best conditions of reaction. On this basis, the thesis synthesized L-aspartic acid autunite complex and L-aspartic acid coppe complex.

本课题探讨了反应温度、反应溶液的酸度、原料配比n:n三个方面对L-天门冬氨基酸与金属元素反应得影响,并以螯合率为指标,运用L_9(3~4)正交设计实验对影响L-天门冬氨基酸螯合的条件进行了研究,得出最佳的反应条件。

In this experiment, we utilized organic solvent ethanol, acetone sedimentation separation method to separate and purify metal chelates. In the mean time, the chelation ratio of L-aspartic acid/aspartame zinc、autunite、coppe、ferrous complex was determined by EDTA complexometric titration and the products\' structure were analyzed and confirmed by IR spectrometry.

本试验采用有机溶剂乙醇、丙酮沉淀分离法来分离提纯金属螯合物,借助EDTA络合滴定法测定了L-天门冬氨基酸、阿斯巴甜与金属元素钙、铁、铜、的螯合率,利用红外光谱对产品结构进行了分析确认。

The thesis introduced the procedure of synthesizing L-aspartic acid metal complex and aspartame metal complex with the raw material of L-aspartic acid、aspartame and metal elements iron、zinc、autunite、coppe.

本论文主要进行了L-天门冬氨基酸、阿斯巴甜与金属元素铁、、钙、铜的合成研究。

The two interpolation methods were evaluated for the suitability of estimating the spatial distribution of soil Zn by using an auxiliary variable.

并对这两种利用辅助变量的克里格方法在土壤空间分布研究中的适用性进行评价。

The average value of different age stages were collected.

主要观察指标:不同年龄对应的、钙含量比较。

Our leading products include organic pigments like Azoic red, Azoic orange, Azoic yellow and PHTHALOCYAINE series as well as inorganic pigments such as Chrome Yellow, Molybdate Chrome Red etc., which are widely used for inks, plastics, rubbers, paints, textile printing and other industries.

我们的主要产品是有机颜料偶氮红、黄、橙系列和酞青系列以及无机颜料铬黄系列、铬黄系列、钼铬红系列等,产品广泛应用与油墨、塑料、橡胶、油漆、纺织印花、涂料、皮革、文具等工业。

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推荐网络例句

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候,里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色,卵在发育96h后卵基本全部孵化。

There was a conflict between plebs and patricians in ancient Rome in 494BC.

在公元前494年,罗马发生了一次平民反对贵族的斗争。