依据常规生物脱氮原理，脱氮过程包括将氨氮氧化为硝酸盐氮或亚硝酸盐氮的硝化反应和将硝酸盐氮或亚硝酸盐氮还原为氮气的反硝化反应。
Based on traditional biological nitrogen removal theory, nitrogen removal involves nitrification of ammonia to nitrate or nitrite followed by denitrification of nitrate or nitrite to nitrogen gas.
对缺氧环境下硫酸盐还原对反硝化脱氮过程影响进行了试验研究。
It has been conducted an experimental study on the effect of sulfate reduction on denitrification under anoxic condition.
硝酸盐氮的最终还原产物为氨氮。
The final reduction product of nitrate nitrogen is ammonia nitrogen.
如果主要提供还原态氮，则较小的细胞将在种间竞争中占优势。
If it is supplied mainly by reduced nitrogen, the small cells would ultimately in in interspecific competition.
研究结果表明，在燃煤中添加醋酸镁后，醋酸镁对燃料氮的释放过程中起到一定的还原作用，可以减少NO的生成。
The result reveals that the magnesium acetate in coal can make a reducing action during combustion and reduce the quantity of NO on the conversion course of fuel-N.
在温和条件下，利用磷化镓纳米粒子进行了氮的还原反应，即氮氨转化。
Under mild ambient conditions gallium phosphide nanoparticles were employed to carry out the reduction of nitrogen.
通过数理统计系统分析了烟叶中水溶性糖(包括还原糖和总糖)、烟碱、总氮含量与烤烟吃味品质的关系。
Statistical analysis were used to investigate the relationship between content of water soluble sugar, alkaloid, total nitrogen and taste quality of flue cured tobacco.
加入外源硝态氮培养后叶片硝酸还原酶活性的增加程度与叶柄硝态氮含量相一致。
The percentage increase of blade NRA after cultivated by extra-source nitrate was positively related to the petiole nitrate-N concentration.
结果表明，还原脱硫效率高，喷氨脱氮效果好。
Results show that reducing desulfurization has higher efficiency and ammonia injection effect is very perfect.
方法以对硝基苯甲酰氯为起始原料，经缩合、还原、重氮化、偶合、成盐等反应制得巴柳氮二钠。
METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.
不同品种硝酸盐累积的差异取决于还原硝态氮能力的差异。
The variance of nitrate accumulation of different cultivars laid on the variance of the ability in the reduction of nitrate.
提出了磷化钼常压制备工艺，包括溶胶-凝胶法制备负载型磷化钼催化剂前体及在常压下以氢氮混合气为还原剂的催化剂前体还原。
Supported phosphorized molybdenum catalyst precursor was prepared by the sol-gel method, and reduced under atmospheric pressure by hydrogen nitrogen mixture for the first time.
方法：采用细胞生长曲线、形态学及NBT（硝基四氮唑蓝）还原试验判定NB4细胞的生长、分化及功能；
METHODS: Proliferation curve, morphology and NBT test were used to determine the proliferation and differentiation of NB4 cells.
结果表明，在干旱胁迫下烤烟叶片还原糖含量下降，总氮和烟碱含量升高，烟叶中主要香气物质含量减少，品质下降。
The results showed that the reducing sugar content in flue-cured tobacco leaves decreased, but the total nitrogen and nicotine contents increased under drought stress.
结果表明：白灵菇菌丝体和子实体可溶性物质、可溶性蛋白、总糖、还原糖、氨基态氮含量相近；
The results showed that the contents of soluble protein, total sugar, reducing sugar and amino nitrogen are almost the same.
由于对培养基中高水平的还原氮的反应而发生的。
This may occur in response to a high level of reduced nitrogen in the medium.
四唑氮蓝还原试验显示其功能亦渐超成熟。
NBT reduction test showed functional maturity of the differentiated HL-60 cells.
纳米铁还原硝酸盐氮的表观活化能较低，还原反应在常温下即很容易进行；
Due to low ap-parent activation energy for reduction of nitrate nitrogen by NZVI, the reduction reaction can be per-formed at normal temperature.
催化加氢还原硝酸盐生成氮气具有高效、无二次污染等特点，是一种应用前景良好的脱氮技术。
The catalytic hydrogenization process offers a practical approach to remove nitrate from water due to the high efficiency and the benefit free from secondary pollution.
喷施该菌株制剂可以使烟叶可溶性总糖、还原糖含量增加，使蛋白质、总氮、烟碱含量下降。
When the strain preparation is spayed, the soluble total sugar content and the reducing sugar content of tobaccos can be increased, while protein, total nitrogen and nicotine content are reduced.
本文从碳氮双键的还原过程、腙的异构和希夫碱的还原三个方面概述了碳氮双键的极谱研究现状 。
This paper, according to the process of double-bonded carbonic acid reduction, the isomerism of hydrazone & alkali reduction, depicts the current polarogram research of double-bonded carbonic acid.
氮、硼、烟碱含量从上部烟叶到下部烟叶显著地依次降低，而钾、铁、还原糖则从上部烟叶到下部烟叶显著地依次升高；
The N, B and Nicotine content in tobacco leaves drop significantly in the order of top leaves, middle leaves and bottom leaves, while K, Fe and Reducing Sugar increase significantly in the same order;
氮、硼、烟碱含量从上部烟叶到下部烟叶显著地依次降低，而钾、铁、还原糖则从上部烟叶到下部烟叶显著地依次升高；
The N, B and Nicotine content in tobacco leaves drop significantly in the order of top leaves, middle leaves and bottom leaves, while K, Fe and Reducing Sugar increase significantly in the same order;
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