氮

The relationship of the crystallographic structure and the intrinsic magnetic properties to the nitrogen content is investigated.

对氮含量与晶体结构和内禀磁性的关系研究表明：氮含量对制备高性能的氮化物磁粉是至关重要的。

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。

Both hexanitrohexaazatricyclododecanedione and hexanitrohexaazatricyclotetradecanedifuroxan are the typical representatives of fused ring-nitroamine. 4, l0-Dinitro-2, 6, 8, 12-tetraoxadiazatetrocyclo [5.5.0.0^(5.9). 0^(3.11)] dodecane is the typical representative of cage nitroamine.

六硝基六氮杂三环十二烷二酮和六硝基六氮杂三环十四烷并双氧化呋咱是稠环硝胺化合物中的典型代表；4， 10-二硝基－2， 6， 8， 12-四氧杂－4， 10-二氮杂异伍兹烷是笼形硝胺化合物中的典型代表。

With the soil planted the konjac as the investigation and study object and planted corn as CK, the soil organic carbon, soil active organic matter, soil entire nitrogen, edaphon quantity and edaphon community structure was determined. The change of soil carbon nitrogen, edaphon carbon nitrogen and edaphon bacterium and fungus was analyzed.

方法］以种植魔芋地的土壤作为调查研究对象，用种植玉米的土壤作为对照，测定土壤有机碳、土壤活性有机质、土壤全氮、土壤微生物量和土壤微生物群落结构，分析土壤碳氮、土壤微生物碳氮和土壤微生物细菌和真菌的变化。

By the B3LYP calculation of DFT, the difference in changes of energy and charge of ion probe C〓 and C〓 interacting with hBN and graphite respectively and the difference in frontier orbital energy level reveal difference in electroaffinity of hBN and graphite. It could be indicated that hBN only shows weak electropositivity, and will not be able to accept electrons from metal.

根据密度泛函B3LYP方法的计算结果，从六方氮化硼与石墨的前线轨道能级和两者对离子探针的作用能及C〓和C〓的电荷变化不同所表现出的在电亲和性上的差异，揭示了金属难以插入六方氮化硼层间的原因是六方氮化硼仅显弱的电正性，不能接受金属转移来的电子。

Using pentaerythritol as initiator, boron trifluoride diethyl etherate as catalyst.dichloroethane as dispersion agent, the chloride polyether polyol is synthesized based on the mechanism of cationic ring-opening polymerization of epiclilnrohyclrin.The azide polyether polyol is synthesized, in DMF through A and sodium azide, and the non-reported azide energetic curing agent is synthesized through the adduction of B and IIDI.

以季戊四醇为起始剂，三氟化硼乙醚为催化剂，1，2—二氯乙烷为分散剂，环氧氯丙烷经阳离子开环聚合反应制成氯化聚醚多元醇，A在N，N—二甲基甲酰胺中与叠氮化钠反应制得叠氮聚醚多元醇，B与六亚甲基二异氰酸酯加成反应制得未见文献报道的叠氮固化剂。

The precipitation only has faintish negative correlations with N concentrations （p〉 0.05）, but the NH^＋ 4-N has significant positive correlations with NO^- 3-N and TON （p〈 0.05）, and they might have homologue.

结果表明，各形态氮月均浓度之间差别较大，具有明显的季节性，原因主要与人类活动、降水强度及频次、风向、地理位置以及氮氧化物自然排放有关；湿沉降的TN组成以TIN为主（51.38％-98.96％），TIN又以NH^＋ 4-N和NO^- 3-N特别是NH^＋ 4-N为主，降水天气系统的路径在很大程度上影响着降水中各形态氮的组成；降水量与各形态氮浓度均呈较弱的负相关（P〉0.05），而NH^＋ 4-N与NO^- 3-N、TON均呈显著正相关（P〈0.05），它们可能具有同源性。

The characteristics of non-azide compositions including high nitrogen compounds such as tetrazoles,guanidine,improved thermites,oxidants,binders and process assistants are discussed.Because of their advantages such as adjustable burning rate,nontoxicity and high gas yield,non-azide gas generant to replace azide gas generant will put into use widely.

对出现的四唑类、胍类、铝热剂类等非叠氮配方的高氮化合物燃料、氧化剂、黏合剂、工艺助剂等特点和发展做了总结和讨论，指出非叠氮高氮化合物有无毒、燃速范围宽、产气量大、燃温低等优点，正在取代叠氮配方燃气发生剂，得到广泛应用。

These sug- gested that this model has an excellent reproducibility and representativeness and is an ideal model for study of gunshot wound at maxillofacial region; Intensification of early management after damage of tissue can help achieve good curative effect.

对一氧化氮特殊生成途径—L-精氨酸/一氧化氮途径改变引起的NO生成量的变化与机体内多种生理和病理过程的关系的研究，使人们对这些过程的发生、发展的机制有了更加深入的认识；许多细胞因子也是通过对L-精氨酸/一氧化氮途径的影响而发挥调节作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。