含氮的

The research results indicated that the best base was KOH, the best acid was H3PO4 and their neutralizing products were the necessary nutrients for foliar fertilizer; 12.4 L of foliar fertilizer were obtained in per kg of shrimp offal, chitin was obtained in 13.8% yield, crude protein was obtained in 23.2% yield using this method; This multifuctional foliar fertilizer was an abundant nutritional multifunctional foliar fertilizer which contained 15 kinds of amino acids, shimp cephalin, astacein and many trace elements. The concentration of calcium was 38.9 mg/L, the concentration of magnesium was 55.4 mg/L, the concentration of potassium was 20.0 g/L, the concentration of nitrogen was 4.5 g/L and the concentration of phosphorus was

研究结果表明：(1)处理虾下脚料的最佳碱是KOH，最佳酸是H3PO4，其中和产物是叶面肥必需的营养素；(2)本工艺不仅每Kg虾下脚料可制备虾叶面肥12.4L，而且可回收13.8％甲壳素和23.2％粗蛋白质；(3)经分析测定虾叶面肥中，含钙(Ca2+)38.9 mg/L，含镁(Mg2+)55.4 mg/L，含钾20.0 g/L，含氮4.5 g/L，含磷 78.9 g/L，还含有15种氨基酸及虾脑磷脂、虾红素及多种微量元素等，是一种营养丰富的多功能叶面肥。

Fertilizer Entec26 contained DMPP (new type of nitrification inhibiter) could also decrease soil nitrate leaching.

证明在高灌水量条件下，尿素+玉米秸杆处理，使土壤矿质氮固定和微生物氮增加，降低了土壤硝态氮的下层累积和向下淋洗；施用含新型硝化抑制剂DMPP的肥料Entec26也能降低土壤硝态氮的向下淋洗。

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。

Based on analysis of degradation and transformation of organic compounds in coke plant wastewater through every stage of the A 1 A 2 O biofilm system,several typical nitrogen heterocyclic compounds (pyridine,indole,quinoline,isoquinoline,2\|methyl quinoline and 8\|hydroxyl quinoline) in coke plant wastewater were selected for the study.

在对焦化废水中有机物在A1 A2 O生物膜系统中降解转化规律进行分析的基础上，选取焦化废水中 6种主要的含氮杂环化合物：吡啶、吲哚、喹啉、异喹啉、2 甲基喹啉、8 羟基喹啉，与苯酚共同配制成溶液，在A1 A2 O生物膜系统中运行，结果表明上述几种含氮杂环有机物在A1 A2 O系统中都可得到较完全的去除。

The chemical analysis of N, P and K in organic fertilizer is presented: sample is decomposed by sulfuric acid-hydrogen peroxide and prepared to be a solution. N can be determined by NC-2 model quick N analysis set, P by chinoline molybdic acid method and K by tetraphenylboron potassium, needless of spectral photometer and flame photometer, the method is available when the content of N, P or K is over 0.1% with desired accuracy and precision.

介绍用化学分析方法测定有机肥料氮、磷、钾的含量，即样品经硫酸-过氧化氢消化后，制备待测溶液，分取待测溶液用NC-2型快速定氮仪测定氮，用磷钼酸喹啉重量法测定磷，用四苯硼酸钾重量法测定钾，不需使用分光光度计和火焰光度计，适宜一般复混肥料厂采用，对含氮、磷、钾分别达0.1％以上的样品均可用本法测定，方法的准确度和精密度能满足生产的要求。

By setting the retting duration of 20 hours, the factors affecting the residual gum percentage of the retted kenaf fibers are studied. The experimental results show clearly that the following factors have the significant influence on the residual gum percentage of the retted kenaf fibers and show the obvious variation tendency. The preferred processing parameters are as follows: pH value 7. 0、bath ratio 1: 50、reuse percentage of retting liquid 50%、air flow volume 2. 5L/min、temperature 40℃、nitric additives (ammonia is better than nitrates) percentage 0.45%.By comparison with anaerobic retting, the retting duration using aerobes is much shorter than that using anaerobes.

确定了以好氧微生物脱胶作为本课题的脱胶路线后，在特定的脱胶时间（20小时）条件下，通过分析不同参数条件下的残胶率，研究了好氧微生物脱胶的各种影响因素对红麻脱胶的影响规律，并优选出最佳脱胶液回用比为50％，最佳pH值为7.0，最佳气流量为2.5L/min，最佳浴比为1：50，最佳水浴温度为40℃，最佳含氮添加剂为铵盐类化合物，最佳含氮添加剂用量为0.45％。

The extent of intracolonial integration in massive hermatypic corals was investigated by carbon and nitrogen stable isotope analysis. The δ13C of coral tissues were higher than zooxanthellae.

本实验由垦丁地区采集团块状石珊瑚；分析珊瑚群体中不同位置的珊瑚组织及共生藻的的稳定性碳、氮同位素组成，以探讨含碳、含氮物质在珊瑚内之传递现象。

The photoinduced cis-trans isomerization reaction occurs after photo-irradiation of this compound, and the rate of conversion depends strongly on the polarity of solvents used.

八 研究了C5位联有含氮茋的三芳基-2-吡唑啉化合物(TPP15)的光物理行为，发现：该化合物在不同极性溶剂中的荧光量子产率值呈倒钟形状，这与在不同极性溶剂中邻近效应的大小以及吡唑啉环和含氮芪基团间的电子转移的难易程度有关。

As the raise of ammonia-N concentration,survival rate and daily growth of unexuviated larvae decreased gradually, while the metamorphosis rate and daily growth of exuviated larvae increased gradually firstly and then decreased.

氨氮是虾蟹类的排泄物，也是虾蟹类残饵、粪便以及其它动植物尸体等含氮有机物分解的终产物，硫化氢则是由于含硫有机物在缺氧条件下，由厌氧细菌分解形成。

Influence of different nitrogen fertilizer application levels and organic fertilizer rate and nitrogen forms and topping stages of sun-cured red tobacco on the main nitrogen compounds and the yield and quality were studied through field experiment in Fenghuang county ,the city of Hunan province.

2004-2005年，在湖南省湘西自治州凤凰县通过大田试验，初步探讨了氮用量、有机无机肥配比、氮素形态配比、打顶时期对晒红烟主要含氮化合物含量及产质效应的影响，研究结果如下： 1、施氮水平对晒红烟烟碱及其它含氮化合物的含量具有明显影响。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。