氮的

As a cationic exchanging membrane in electrodialysis , the membrane was used to treat inorganic wastewater with high concentration of inorganic ammonia and azote.

将此膜应用于电渗析去除高浓度氨氮废水的处理研究中，结果表明，该膜对氨氮的选择透过性较好，能有效地透过废水中氨氮，氨氮透过率可达80%。

The results showed that: the influence of the aquaculture process on aquaculture water determined by type of aquaculture; the influence of aquaculture process on the water temperature, salinity and pH value were not wide.the descent of pH value was related to feed coefficients ; the dissolve oxygen of water in outfall was lower than the water in infall,but the concentration still maintained at the saturation level, is mainly affected by density of aquaculture ,rate of feed and artificial measures of increasing oxygen ;the major form of inorganic nitrogen was nitrate-N;the concentration of inorganic nitrogen and the organic matter tended to increase ,but the ammonium to decline ,this was relation with density of aquaculture ,rate of feed and variation of the different inorganic nitrogen form ; concentration of phosphate-P was low in outfall of pond , related with phosphate-P precipitating, as flowing water speed slowly in outfall;This phenomenon that the total number of bacteria and coli form group of water in outfall was lower than the water in infall , this caused by measures of sterilization and disinfection .

结果表明：养殖过程对水体影响与养殖类型有关。养殖过程对水体的水温、盐度和pH影响不大； pH下降与饲料系数高有关；溶解氧含量排水口比进水口低，但仍维持在饱和状态，与养殖密度、投饵率和人工增氧有关。硝酸氮是无机氮的主要存在形式，无机氮和有机物含量有升高趋势，氨氮有下降的趋势，与养殖密度，投饵率和各种无机氮之间的相互转换有关。活性磷酸盐含量在排水口含量下降，与排水口流水速度慢，磷酸盐沉淀有关。生物指标细菌总数和大肠杆菌总数在排水口比进水口低现象普遍存在，这与养殖场杀菌消毒等措施有关。

Nitrite oxidoreductase was responsible for the nitrification of nitrite-oxidizing bacteria, which was coded by norB gene and others.

硝化菌主要由两大生理群组成：氧化氨氮为亚硝酸盐氮的是亚硝酸菌；氧化亚硝酸盐氮为硝酸盐氮的是硝酸菌，硝酸菌中负责硝化作用的酶是亚硝酸氧化还原酶，这个酶由norB等基因编码，因而对这个酶和基因的研究将有助于氮污染的控制和防治。

In addition, NOS activity decreased with the time prolonged in vitro, when oxyhemoglobin, a scavenger of NO, was applied, the NOS activity kept stable. This result above demonstrated that NO can inhibit NOS activity, and it was the inhibition of NOS activity by NO that may be an important protective mechanism to resist the neurotoxicity by Py.

另外，本实验还发现，在体外实验时，一氧化氮合酶活性可随时间的延长而逐渐下降，当向反应体系中加入氧合血红蛋白去除一氧化氮的作用后，则一氧化氮的抑制作用消失，酶活性保持稳定；以上结果表明一氧化氮对于一氧化氮合酶活性具有抑制作用，而且这种抑制作用，可能是机体对抗拟除虫菊酯毒性作用的一种重要保护机制。

When applied -N amount was more than 300Kg/hm2, the contents of some cations, which effect on key enzymes of nitrogen assimilation, was declined significantly, thus, total-N decreased in leaves of swamp cabbage.

华南热带农业大学硕士学位论文 6、施氮量超过300 Kg月加2后，蔬菜叶片中影响氮同化关键酶活性的阳离子含量显著下降，影响了蔬菜对氮的同化，叶片中全氮含量下降。

At the middle nitrogen level of 90kg/hm~2. All are the highest including seed yield, tillers, fertilie tiler, spkilets/fertilie tiler , florets/spkilet , seeds/spkilet.

在彭水施低氮(纯N60kg/hm~2)比施高氮的种子产量高，在石柱和武隆施高氮比施低氮的种子产量高。

The source and distribution of nitrogen trichloride in chlor-alkali production of Haohua Southwest Chemical Industry Co.

分析了昊华西南化工有限责任公司氯碱生产中三氯化氮的来源和分布，提出预防三氯化氮积聚的方法：加强三氯化氮过程监控和强化预防三氯化氮思想意识。

Nitrogen forms in compound fertilizer affected biomass accumulation of maize too,and the highest dry weight of shoot and root was found in the plants supplied with compound fertilizer containing 100% urea nitrogen in Udic Isohumisols,and mixed nitrate and ammonium in Udic Cambosols.

生长45 d玉米苗的地上和地下部的生物量，在黑土上均以全酰胺态氮的配方最高，地上部干重较其他配方增加10%左右；而在潮土上则以铵态氮与硝态氮配方的效果最好，铵态氮和酰胺态氮混合的配方在2种土壤上均较差。

Compared with that in the control, the proportion of acidolysable organic nitrogen to total nitrogen decreased mainly due to decreasing proportion of amino acid nitrogen and ammonium nitrogen to total nitrogen.

施肥处理的酸解有机氮占全氮的比例减小，主要是由氨基酸态氮、酸解铵态氮占全氮的比例减小所致。

The results showed that (1) compared with conventional N treatment, the N loss of economic N treatment reduced while NUE and N residue in soil improved under water-saving condition;(2) Use efficiency of fertilizer applied as basal fertilizer was higher than that as top-dressing fertilizer under water-saving condition;(3) The fertilizer N residue rate was from 29% to 41%, and 60% of N residue, which distributed in 1m depth soil concentrated in 0～20cm surface layer;(4) In whole growing stage of wheat, fertilizer N hadn't leach to 130cm depth;(5) NUE of economic N treatment under conventional irrigation decreased by 16.6% compared with the same N treatment under water-saving condition.

结果表明，与常规施氮量处理相比，节水灌溉条件下节肥施氮量处理的氮肥损失率降低，氮肥当季利用率和土壤残留率提高；基施氮肥的利用率高于追施氮肥；土壤肥料氮的残留率在 2 9%～ 41 %之间，分布于 1m土层中，其中60 %以上集中在 0～ 2 0cm土层；在整个小麦生长季内，肥料氮并没有淋洗到 1 30m以下。节肥施氮量在常规灌溉下的当季利用率比在节水灌溉下降低 1 6 6%。

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。