含氮的

The join simulation model was tested with the experimented data of winter wheat - summer maize double cropping system in xinji.

氮素的吸收和分配模型考虑了水、氮供应、作物需氮量和各器官含氮量的影响。

Result The results showed that its components were quite complex, and 89 organic compounds were identified. There were 72 kinds of oxygen-containing organic compounds which included esters, phenols, aethers, ketones and alcohols in the depolymerization product, small amounts of alkanes, alkenes, arenes, thiophenol and nitrogen-containing organic compounds were also detected, which showed that characteristics of the product with high oxygen content, low nitrogen and sulphur content.

结果］超临界乙醇解聚产物成分十分复杂，GC/MS分析鉴定出89种有机化合物，其中72种为含氧化合物，主要有酯、酚、醚、酮和醇等，还检测出少量烷烃、烯烃、芳烃、苯硫酚和含氮化合物，反映了解聚产物的高含氧量和低含氮硫量的特性。

The invention discloses a disposing method of ammonia nitrogen waste water in the effluent disposal technological domain, which is characterized by the following: sieving heterotrophic nitrobacteria and aerobic denitrobacteria with stronger environment adaptive ability to nitrate and denitrate simultaneously; constructing mud nitrated and denitrated system to dispose waste water with nitrogen simultaneously to satisfy different DO densities.

为了解决同步硝化反硝化过程中菌种来源不明，调控困难，硝化和反硝化对DO浓度要求不同，在实际工程中难以实现同步硝化反硝化，本发明筛选出对环境有较强适应能力的异养硝化细菌和好氧反硝化细菌，采用异养硝化细菌和好氧反硝化细菌构建同步硝化反硝化污泥体系处理含氮废水，具有投资少，费用低，处理效果好，不仅去除废水中的氨氮，而且对总氮也有较高的去除率。

With the aim of enhancing the nonlinear optical property of poly, poly[(thiophene-2,5-diyl)p-(N,N-dimethylamino) azobenzylidene] is prepared from 4-aldehyde-4'-dimethylamino azobenzene and thiophene through condensation polymerization reaction.

为了提高聚噻吩甲烯的非线性光学性能，通过4-醛基-4'-二甲胺基偶氮苯和噻吩的缩聚反应，合成了聚噻吩对二甲氨基偶氮苯甲烷，再用PTDMAAB与四氯苯醌发生脱氢反应合成了侧链含偶氮的聚噻吩甲烯。

Under normal circumstances, this is not a problem because food proteins contain only the major components of nitrogen and other major components are not nitrogen, the Kjeldahl method is a very accurate determination of protein content .

在通常情况下，这不是个问题，因为食物中的主要成分只有蛋白质含有氮，其他主要成分都不含氮，因此凯氏定氮法是一种很准确的测定蛋白质含量的方法。

The critical nitrogen content in heading period was used to calculate the biggest accumulation quantity of nitrogen. The latent distribution index of leaf and stem, which was the variety heredity parameter, were used to distinguish the difference in nitrogen assignment in different varieties. The dynamic content of the nitrogen accumulation before anthesis could be described with a Richards model. The dynamic content of the nitrogen remobilization in leaf with leaf area index could be described with a power model, and the nitrogen absorption of grain from soil with dry weight could be described with a power model. The dynamic content of nitrogen density in stem and spike with physiological development time could be described with a nonlinear model.

模型利用抽穗期植株临界含氮量来表达氮素最大积累量，引入叶片潜在分配指数和茎鞘潜在分配指数2个品种遗传参数来区别不同品种在器官间的氮素分配差异，采用Richards方程来描述大麦花前氮素积累动态变化；采用指数函数方程来描述叶片氮的转移量随叶面积指数的动态变化以及籽粒从土壤中吸收的氮量随干物重的动态变化；采用非线性函数方程描述茎鞘和穗部的氮浓度随生理发育时间的动态变化。

Removal and recovery of nitrogen and phosphorus from wastewater by struvite crystallization,which has the advantages of high removal rate and rapid reaction rate.

淀法处理含氮磷的废水，具有氮磷去除率高，反应速度快的优点；同时，回收氮磷生成的磷酸铵镁。

As there was no nitrogen in the solution before experiment, the nitrogen in amino acids should have resulted from deposition of 〓 from outside.

由于反应溶液中本不含氮，故氨基酸中的氮应是外来氮离子沉积于溶液中的结果。

But the glass-transition temperature of the polymer decreased to 96℃. When the cuing agent, PN was replaced by diphenyldiaminomethane, the V-0 rating could be achieved with the least content (3.68 wt% P and 0.83 wt% N) and Tg was increased to 139℃. The cyanate ester- containing PN was synthesized by phosphorus-containing PN and cyanogen bromide.

为了减少磷的用量，将PN改成含有氮的硬化剂(Diphenyl diaminomethane， DDM)，利用DDM中的氮和含磷PN的磷产生氮磷共乘阻燃效果，可使磷用量下降至3.68%，氮含量0.83%即可达V-0级，而Tg也上升至139.83℃。

Different fillers for wetlands are chosen by comparison and then matched, the following filler matching is achieved aiming at different influent: for wastewater with low nitrogen concentration and medium or high organic matter concentration, better removal efficiency is attained by combined fillers of coal cinder + pebble stone + gravel; for wastewater with high nitrogen concentration and low organic matter concentration, the optimum combination is fly ash brick crumbs + gravel.

针对不同的进水进行了湿地填料的比选与配伍，获得了适合于不同水质的填料配伍：对于含氮浓度低或中、高有机物浓度的污水，煤渣+砾石+碎石填料组合有较好的去除效果；对于含氮浓度高或有机物浓度低的污水，粉煤灰砖屑+碎石组合有较好的去除效果。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。