硝化

Seaweed extract-EClean was applied to treatment for eutrophication water. Quantative detection of nitrogen cycle bacteria showed that seaweed extract could improve the growth of ammonifying bacteria, nitrosobacteria and nitrobacteria in the treated water. There was also an increasing trend in the number of denitrifying bacteria in aerated treatment water, which showed that the seaweed extract could accelerate nitrogen cycle and the release of nitrogen from water.

利用国外引进的海藻提取物EClean制剂对富营养化水体进行处理试验，经过定量测定处理和对照水体中氮循环细菌数量的变化，得出EClean制剂能够促进水体的氨化细菌、亚硝化细菌、硝化细菌的生长，并维持了曝气条件下一定数量的反硝化细菌，通过此处理使得在同一反应器中、同一条件下完成硝化作用和反硝化作用成为可能，加速了水体的氮素循环，使水体总氮下降明显。

The experimental result of anaerobic ammoniation shows, the most appropriate hydraulic retention time is between six and eight hours, the longer the HRT , the higher the rate of NH3-N net increase.

现场调查分析表明，屠宰废水是一类富含有机氮的有机废水，其NH_3-N浓度在整个生物处理工艺过程中存在一定变化规律，特别在厌氧之后，NH3-N浓度将大幅增加(净增加70%—150%)，显然多数以进口NH_3-N指标进行硝化及反硝化的设计是错误的，且是导致NH_3-N难以达标的一个重要原因。

The results of culture experiment show that the volume of the gas produced by ammonification in the vagetated water is about 2 times as much as that in the unvegetated open water.

各种水生高等植物群落内氮循环细菌分布及微环境的差异，促进了有机氮的分解、铵态氮的硝化和挥发、硝酸盐氮的反硝化作用。

Terrestrial microorganisms play a vital role in soil nitrogen cycling. They participate in important ecological processes such as nitrogen fixation, ammonification, nitrification and denitrification.

土壤微生物在土壤氮循环中发挥着不可替代的作用，参与了包括固氮作用、氨化作用、硝化作用和反硝化作用等重要生态过程。

In this paper, the effects of enrofloxacin residues on soil ecological processes (soil respiration, soil cellulosic decomposition, soil ammonification , and soil nitrification) were studied.

1μg/ g土对土壤氨化作用有刺激作用，而较高浓度恩诺沙星残留(1μg/ g土，10μg/ g土)则会对其起抑制作用，药物作用活性期为 9d；不同浓度恩诺沙星对土壤硝化作用影响极其显著，当恩诺沙星浓度达到 1μg/ ml时，在 3～ 9d内，对土壤硝化作用有一定抑制作用。

The activated sludge in nitrous nitrifying process and autotrophic denitrifying process are fully studied, and the characteristics of these processes in stable and acclimation stage have been drawed.

对亚硝化工艺和自养反亚硝化工艺的污泥相变化进行了仔细研究，得出各工艺稳定运行及污泥适应等阶段的特征污泥相。

65 The methyl group on the benzene ring greatly facilitates the nitration of toluene.

苯环上的甲基使甲苯非常易于硝化苯环上的甲基使甲苯非常易于硝化。

Furthermore, the relative energies and other properties of these substances have been studied with the bond angle ranging from 90° to 180° at fixed bond length at the same level. From the results obtained, the occurrence possibili...

进而研究了当键角在90°-180°之间变化时，这些相关物质能量的变化规律，由此探讨了不同硝化机理发生的可能性，为以后进一步研究不同结构与活性的芳香化合物的硝化反应机理提供依据。

The cellulose nitrate containing secondary amine group was prepared by one-pot method in two steps: etherification and amination.

以硝化纤维素为原料，经一锅法醚化和胺化 2步反应合成了仲胺型硝化纤维素。

Because the traditional resolver cellulose nitrate lustre-coating agent it does not bear the aging, the resistance to cold to be bad, shortcomings and so on hygienic performance difference receive the impact, but emulsion cellulose nitrate lustre-coating agent, although the comparison environmental protection and the hygienic performance are high, but because became the membrane glossiness to be bad and the emulsion long-term laying aside does not stabilize has limited its application.

传统的溶剂型硝化纤维光亮剂因其不耐老化、耐寒性差、卫生性能差等缺点而收到冲击，而乳液型硝化纤维光亮剂虽然比较环保且卫生性能较高，但因成膜光泽性较差和乳液长期放置不稳定而限制了其应用。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。