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The effects of the application of biodegradable and nondegradable chelate on the uptake of Cu, Zn, Pb and Cd by Sudan grass, corn Zea mays L.

用土培试验的方法，研究了螯合剂EDDS和EDTA对苏丹草、玉米、大豆、茼蒿、青菜吸收土壤重金属的影响。

It was found that heme-iron of myoglobin directly interacted with additional Cu, Zn and Co, these metal ions could drag iron ion out from heme prosthetic group of myoglobin, and subsequently myoglobin became myoglobin derivatives lacking iron ion.

结果发现，金属离子M与肌红蛋白活性中心的Fe发生了直接相互作用，外加金属离子将铁离子从肌红蛋白中&拖拽&出来，形成部分空位肌红蛋白衍生物。

After rescreened,a strain F00 (named temporarily F00, the same to the following),with highest flocculating activity was picked up.Using optimized and orthogonal tests, the optimum culture conditions are: Sugar as source of carbon, Cargamide as source of nitrogen,added P, Mg, K, Zn, Mn mineral elements, initial pH value 6.5, inoculation 4-5 x 104spores/ ml, temperature 30癈 and aerations 80 rpm.

通过用它作接种量、培养基优化及最佳发酵条件正交试验，确定F_(00)产生絮凝剂最佳条件：发酵培养基以蔗糖作碳源，尿素作氮源，辅加磷、镁、钾、锌、锰等矿质元素，初始pH值6.5，接种量为每毫升发酵液起始含4～5×10~4个孢子，发酵温度30℃，摇床转速80rpm。

On the other hand, Sn dendrites were formed at the interface of piled Zn powders/solution, forming a bridge thereat like agraffes.

指出为了获得成分均匀、结构致密的机械镀锌层，应当强化先导金属Sn的第一种沉积方式，抑制第二种沉积方式。

We have reported results of the spatially indirect photoluminescence spectra measurements performed on undoped ZnSe/BeTe type-ΙΙ quantum wells with special interface structures at low temperature (5—10 K).

报道了具有特殊界面结构（界面包含三个Zn—Te化学键）的非掺杂ZnSe/BeTe II 型量子阱在低温（5—10 K）条件下的空间间接光致发光光谱的实验结果。

Whatever the Zn/H_2O_2 ratio is, there is only chestnut bur-like structure appeared after thermal oxidation at 850℃for 8h. DSC-TG results showed that while the content of the ZnO film shell on the zinc nanoparticle surface is about 50.4%, the melting and oxidation processes happened almost at the same time during the thermal oxidation process and the bushiest ZnO nanoneedles can be formed.

DSC-TG分析结果表明，纳米锌粉表面保护膜质量占到颗粒质量的50.4%时，热处理阶段氧化过程和熔化过程几乎同时发生，生长的ZnO针状产物最为茂密；对于微米锌粉，H_2O_2预氧化处理对其热行为及其最后形貌生长都影响不大，热氧化阶段是其控制阶段。

Treatment of the diacetoxy-calix [4] arene with a series of ditosylates in dry MeCN in the presence of NaOH resulted in formation of electron-rich calix [4] areneocrowns, which reacted with 4, 4'-bipyrindinium and p-bis -benzene at room temperature in dry MeCN to afford self-assembling [2] catenanes by π-π stacking interaction.

以杯[4]芳烃为原料，通过三氟乙酸铊将其氧化成醌，醌类化合物在Zn粉、冰醋酸、少量盐酸和过量的乙酸酐中反应得到双乙酰化产物，利用氢氧化钠使其水解，然后再与各种对甲苯磺酸二酯进行环化反应，得到一系列具有富电子空腔的杯[4]芳烃并冠醚。

The grain-size distribution shows that sand-dust fall-outs in Harbin are the coarsest ones reported ever since in China.

岩石中Sn，W，F，As，Sb，Pb，Zn，Cu，U等有高的综合异常和重砂有锡石，黑钨矿，锑矿物，辰砂及铅，锌，铜矿物异常。

This paper compared the Covalency - Effect and the Nephelauxetic - Effect, applied these two methods in the absorption spectra of DMS Zn1- xMnxTe, and found that both methods can gain fine results. But the results by applying the Nephelauxetic - Effect modifying factor to modify the radial wave functions are much closer to the experimental values.

该文对共价效应和电子云延伸效应在处理稀磁半导体的吸收光谱方面的应用做了详细的比较，并分别应用到了稀磁半导体Zn-xMnxTe上，虽然两种处理方法都能够得出比较好的结果，但用电子云延伸效应修正因子修正波函数得出的结果与实验更为接近。

It was proved that the sensitivity of analytes could be significantly enhanced by adding small amounts of oxalic acid medium with adjusted nebulizer flow-rate gas, especially for the dements with ionization potential between 9 and 11 eV.

结果表明，随着雾化气流速的调节，低浓度乙二酸介质对所分析元素具有增敏效应，尤其是对电离电位在9～11eV的Be、Zn、Se、As、Sb、Hg等高电离电位元素。

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。