硝化的

The yield and regioselectivity were investigated at various ratios of nitrate to salicylate with copper nitrate comparing with nitrous acid.

对比研究了在不同硝酸根和水杨酸甲酯配比条件下用硝酸铜和硝酸作硝化试剂时的硝化收率和区域选择性。

NH3-N is convered in to nitrogen under the condition of anoxic, which is termed as nitrification.

生物脱氮是指利用微生物将含氮化合物中的氮转化为氮气，它分为硝化和反硝化两个过程。

The para-selectivities of mononitration in aromatic compounds such as ethylbenzene, bromobenzene and iodobenzene increased by 18%, 15% and 16% respectively.

反应具有强对位选择硝化能力，乙苯、溴苯和碘苯的对位硝化比例分别提高18%、15%和16%。

The process of preparing NCAGE included the following steps: alkalization of the treated cellulose; etherification of the alkali cellulose; nitration of the water-soluble cellulose ether; and azidation of nitrocellulose glycidol ether.

利用高压蒸汽闪爆处理后的Novel纤维素为原料，经过碱化、醚化、硝化和叠氮化反应，得到了一种新型高能粘合剂——硝化纤维素叠氮甘油醚，并采用元素分析、DSC、FIT红外光谱和X-射线等对其含氮量、结构和性能进行了分析表征。

Because lengthen the 2nd anoxic - good oxygen paragraph mud age comes 15 ～ 20h, be helpful for nitrify / the growth that turns over nitrify bacterium, rose to take off nitrogen to handle the effect thereby.

由于延长第二缺氧-好氧段污泥龄至15～20h，有利于硝化/反硝化菌的生长，从而提高了脱氮处理效果。

Then made them into immobilized cells respectively using polyvinyl alcohol and sodium alginate as carrier.The experiments werecarried out for the selection of nitrosification and denitrification conditions.

然后用聚乙烯醇和海藻酸钠作为载体将它们分别制成固定化细胞，单独作硝化和反硝化试验的条件选择。

Nitrosobacteria was selectively cultivated on the biofilm and short-cut nitrification was achieved in 4 weeks by controlling the following conditions as HRT=1 d, DO=0.5—1.0 mg·L-1, pH of about 7.5, T =30℃ and no sludge recycle.

结果表明，在控制HRT=1 d、温度30℃、DO=0.5～1.0 mg·L-1、pH=7.5左右、无污泥回流等条件下，经过4周的运行，成功地选择培养出亚硝化型生物膜，实现了短程硝化。

The concentrations of NH+4-N,pH and NO-3-N first increased,but later they decreased smoothly. During the biodegradation process, AM was first hydrolyzed,then nitrified and denitrified,and the final products were oxidized into N2,CO2 and H2O.

不同时间段体系内NH+4-N、pH和NO-3-N都随着降解时间的增加逐步上升，但是达到一定时间后会下降，表明AM在降解过程中先水解，然后发生硝化反应，进而发生反硝化反应，最终AM降解成N2、CO2和H2O。

In some more complex cases, secondary amines can be nitrated directly with nitrating mixtures.

在某些复杂的情况下，仲胺能用混合硝化剂直接硝化。

The performance of air-lift internal-loop nitrifying reactor were tested and the granulation of nitrifying activated sludge was discovered.

首次在硝化反应器中发现了硝化污泥的颗粒化现象。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。