查询词典 Zn

The interaction of Zn~(2+) with Uracil results in the shift of the appropriate hydrogen atoms.

计算结果表明，脲嘧啶模型与锌离子的双齿耦合模式比单齿耦合模式稳定。

The most basic center in the Uracil remains the same regardless of whether introducing the water molecules to Zn~(2+) or not.

在中性的脲嘧啶中，一位置的氨基基团比三位置的氨基基团的酸性强。

The muffle kiln was also used in the experiment of calcining of MSWI fly ash. This study investigated the migration characteristics of 4 heavy metals in the process of calcining and established vaporescence kinetics models of heavy metals.

其次，采用高温箱式电炉对垃圾焚烧飞灰进行煅烧实验，对高温煅烧过程中4种重金属(Cd、Cu、Cr和Zn)挥发动力学展开研究，建立煅烧过程每种重金属挥发反应动力学模型。

The study aimed to analyze the chemical composition and contents of Fe, Zn, Cu, Pb, Cr in Cyclina sinensis and Venerupis variegate.

［目的］分析青蛤和杂色蛤的化学组成和铁、锌、铜、铅、铬的含量。

With C. sinensis and V. variegate sold on the market of Lianyangang as the tested material, the general chemical composition and contents of Fe, Zn, Cu, Pb, Cr in their soft tissues were analyzed.

方法］以连云港市售的青蛤和杂色蛤为试材，对其软体部分的一般化学组成及铁、铜、锌、铅、格含量进行分析。

Result In the soft tissues C. sinensis and V. variegate the protein content reached 44.05% and 57.09% resp., the fat content were 11.31% and 13.52%, and their heavy metals were 200.63 and 120.74 mg/kg for Fe resp., 15.27 and 5.13 mg/kg for Zn resp., 2.14 and 1.93 mg/kg for Cu resp., 0.17 and 0.23 mg/kg for Ph resp., and were undetected for Cr resp. C. sinensis and V.

结果］青蛤和杂色蛤软体组织中蛋白质含量分别为44.06%和57.09%，脂肪含量分别为11.31%和13.52%，是高蛋白、低脂肪的水产品；重金属含量，铁分别为200.63和120.74mg/kg，锌分别为15.27和5.13mg/kg，铜分别为2.14和1.93mg/kg，铅分别为0.17和0.23mg/kg，铬均未检出。

objective: to achieve the soluble expression of mn-sod gene in e.coli and assay the enzyme activity of the expressed product. methods: the coding region of superoxide dismutase was amplified using pcr method from the e.coli genome. the pcr product was cloned into puc19-t vector and sequenced.in addition,the cloned coding region of mn-sod was inserted into the expression vector pet-28a to form the recombinant plasmid pet-28a-mn-sod and was then transformed into e.coli bl21 for expression.

超氧化物歧化酶(superoxide dismutase，sod)是细胞体内歧化超氧阴离子自由基(o-2)的一个抗氧化酶，按其结合的金属性离子根据其中金属辅基的不同可分为4类：cu/zn-sod、mn-sod、fe-sod和ni-sod，它们通过催化超氧阴离子自由基0-2发生歧化反应，达到清除o-2的效果，具有防御氧毒性、增强机体抗辐射损伤能力、防衰老以及治疗某些肿瘤、炎症、自身免疫疾病等功效，广受国内外科研工作者的关注和重视[1]。

Vetiver grass can grow well in the same concentrations of heavy metals-contaminated soil, and the growth was not affected by the toxicity of heavy metals. The concentrations of Cd and Zn in the shoots of vetiver grass were 40.7±8.28 and 1,399±132 mg/kg, respectively, and no Pb was detected.

培地茅则可以在相同重金属污染土壤中生长良好，并没有受到重金属的影响而产生毒害症状，植物体地上部中镉及锌浓度分别约为40.7±8.28及1，399±132 mg/kg，而铅浓度则未能检出。

RT The effects of various additives alone or multiply on cathodal linear polarization and cyclic voltammogram were investigated by using methods of scanning potentiostate and cyclic voltammeter.

在以上理论研究的基础上，开发了zn-NH3~N玩Cl一HZO体系制取高纯锌的新工艺，该工艺用于处理锌焙砂和现有酸法工艺难以处理的炼铅炉渣烟化炉氧化锌烟灰非常成功。

The Zn(superscript 2+)of the coating material showed a powerful washability in alkaline synthetic perspiration, which proved that the prepared coating material was stable in alkaline synthetic perspiration.

纳米功能织物在碱性人工汗液中Zn2+的溶出性较小，证明制备的纳米氧化锌整理剂对碱性人工汗液稳定性较好。

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。