查询词典 nitrogen

This paper summarized literature about the structure, adsorption dynamics and thermodynamics, modification of zeolite and its application in wastewater treatment. Based on them, the conditions of zeolite modifying by AlCl_3 was explored, the adsorption properties natural zeolite to ammonia nitrogen and adsorption effects of aluminum modified zeolite to phosphor in solution was researched, the existing form of ammonia nitrogen was investigated by cyclic voltammeter.

本文在对沸石的结构、沸石吸附动力学、热力学、沸石改性及其在废水处理中的应用等相关文献综述的基础上，探索了用AlCl_3溶液改性天然沸石的条件，考察了天然沸石和铝改性沸石对溶液中氨氮的吸附性能以及对溶液中总磷的吸附效果，以及用循环伏安法探讨了水体中氨氮的存在形式。

Results indicated that both the amount of bacteria, epiphyte and actionmyces sharply and the amounts of acarina, collembolan and nematode were increased by application of organic fertilizer and the combined application of inorganic fertilizer with organic fertilizer for a longtime. Soil animal collembolan and nematode were significantly related to soil organic material and available phosphorous and available nitrogen. Acarina was significantly related to soil organic phosphorous, available potassium and available nitrogen.

结果表明：长期单施有机肥及其配施无机化肥，能显著增加土壤细菌、真菌和放线菌的数量，明显提高土壤动物蜱螨类、弹尾类、线虫类的数量，土壤动物弹尾类、线虫类与土壤有机质、有效磷、碱解氮呈极显著正相关；蜱螨类与土壤有机磷、速效钾呈极显著正相关；与土壤碱解氮呈显著正相关。

48 rice genotypes were used for researching nitrogen absorption and utilization efficiency, and the relationship between nitrogen utilization efficiency and main agronomical characteristics.

以48份不同水稻基因型为供试材料，研究了它们的氮素吸收和利用率，及其与主要农艺性状之间的关系。

The invention concerns a process for preparing heterocyclic carbenes of general formula in which R1, R2, R3 and R4 are identical or different and mean saturated or unsaturated, straight-chain, branched or cyclic, unsubstituted or substituted C1-C10 alkyl, C2-C5 alkylidene, C2-C5 alkylidine, C7-C19 aralkyl or C6-C14 alkyl groups, R3 and R4 can also stand for hydrogen or form jointly anellated, substituted or unsubstituted groups with between 3 and 7 carbon atoms and X stands for carbon or nitrogen, R3 being dropped if X is nitrogen.

本发明涉及一种制备通式Ⅰ的杂环碳烯的方法，其中在通式Ⅰ中，R1、R2、R3和R4是相同的或不同的，并且是饱和的或不饱和的，直链、支链或环状的，未取代或取代的C1－C10－烷基、C2－C5－亚烷基、C2－C5－次烷基、C7－C19－芳烷基或C6－C14－芳基基团，R3和R4可以是氢或它们一起形成具有3－7个碳原子的稠合的、取代或未取代的基团，X是碳或氮，并且当X是氮时，不存在R3。

Removal of high concentration of ammoniacal nitrogen discharged in rare earth production process by VMD is basically studied in this paper, and VMD can achieve the purpose of ammoniacal nitrogen removal and reuse of recovered ammonia at the same time.

进行了减压膜蒸馏法处理含高浓度氨氮的稀土冶金所排废水的基础研究，该法可达到脱除废水中高浓度氨氮及回收氨回用于生产过程的目的。

The combined application of strains ZW38 and ZL5 could effectively degrade the ammoniacal nitrogen in marineculture wastewater into the gaseous nitrogen with the poisonless and harmless in the environment.

结论］将ZW38和ZL5联合应用可以有效地将海水养殖废水中的氨态氮降解成为对环境无毒无害的气态氮。

Blowing can take off the ammonic nitrogen efficiently, the rate of removing the ammonic nitrogen reaches 90%....

实验结果表明，采用吹脱法能有效去除氨氮，控制PH在7.5左右，氨氮去除率可达90％以上。

The influence of organic loading, hydraulic loading, the ratio of gas and water and the height of filling to removal efficiency of COD, ammonic nitrogen and total nitrogen has been studied in BAF by using the self-confected wastewater.

中文摘要：本文以自配生活污水为实验用水，研究了有机负荷、水力负荷、气水比以及填料高度对BAF去除COD、氨氮、总氮的影响，并在沸石吸附饱和后对其进行生物再生。

3 Effects of zinc levels on endogenous hormone and nitrogen metabolism in leaves of balsam pear The results showed that zinc application could increase IAA, GA〓, protein, nuclear contents and NRase activity, but decrease tryptophane, nitric nitrogen , free ammonic acids contents and RNase activity in leaves of plants.

1.3 锌对苦瓜叶片内源激素与氮代谢的影响结果表明：施锌可提高叶片吲哚乙酸、赤霉素、蛋白质、核酸含量以及硝酸还原酶活性；降低色氨酸、游离氨基酸和NO〓含量以及RNase活性。

After 26 d composting,ammonical nitrogen and total nitrogen were improved obviously,which were 10.7 g·kg-1 and 36.9 g·kg-1 respectively in amended treatment,while they were 7.7 g·kg-1 and 26.8 g·kg-1 in un-amended trial.

结果发现，添加固定剂的堆肥处理B中铵态氮含量显著提高，堆肥结束时，NH+4-N含量为10.7 g·kg-1，是未添加固定剂的处理A的3倍，全氮含量为36.9 g·kg-1，比处理A提高10 g·kg-1。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷