氨氮

The optimum pH is 8-10 for hypha growth and 7-9 for conidiospore germination; The hypha could not grow on the culture medium which nitrogen source comes from urea and asparagines, but it could grow fast and produce more conidiospore on the culture medium which carbon source comes from maltose, glucose and lactose, and nitro0gen source come from glycine, histidiane and peptone.

该菌在PH 4~12范围内均能生长、产生分生孢子并萌发，菌丝生长的最适pH 8~10。，孢子萌发的最适PH 7~9；该菌不能在以尿素和天门冬酰氨为氮源的培养基上生长，但以麦芽糖、葡萄糖、乳糖、淀粉、甘氨酸、组氨酸和蛋白陈为碳源和氮源时，菌丝生长快、产孢量大；光照处理对该菌菌丝生长、产孢和孢子萌发无显著影响。

The technology of biological nitrogen removal by nitrosification denitrification, which has been developing a few years, is the combination between the oxidation of ammonia and the deoxidation of nitrite.

亚硝酸型硝化反硝化生物脱氮技术是近年来发展起来的新型的生物脱氮技术，其实质是氨的氧化与亚硝氮的还原相偶联。

Ammonifiers in Suzhou Creek can not use inorganic nitrogen and carbamide as nitrogen source; additional carbon source and garbage lixivium have little influence on ammonifiers growth; high content of salt and low temperature restrain ammonifiers growth; alkalescent condition has little influence on ammonifiers, but acidic condition restrain ammonifiers growth; the biomass of ammonifiers are not necessary correlated with the function of ammonifiers, adding glucose with 1g/l content into the water sample obviously promote the growth and function of ammonifiers.

苏州河的氨化菌无法利用无机氮和尿素作为氮源；在营养条件充足时添加额外C源和富含有机物的垃圾浸出液对氨化菌的生长基本无影响；高盐度和低温抑制氨化菌生长；碱性条件对氨化菌的生长影响不大，酸性条件对氨化菌生长具有抑制作用；氨化菌生物量的消长与转氨活性之间不存在必然联系，1g/L的葡萄糖对苏州河水样中氨化菌的数量和转氨功能具有明显的促进作用。

Arginase, which converts arginine to ornithine and urea, is a kind of enzyme in urea cycle. It plays a significant role in N mechabolism.

精氨酸酶是尿素循环中的一种酶，催化精氨酸水解产生鸟氨酸和尿素，在机体氮代谢方面起了重要作用。

The vibration of the nitrogen atom about its equilibrium positions are analyzed in terms of its trajectories solved from the Hamilton equations of motion. The vibration periods are computed by residue theorem and compared with the experimental measurement.

本论文将Rosen-Morse Potential应用至氮原子在氨分子中所受之双最低点位势，由氮原子在复数空间下之运动轨迹，求出其穿隧范围及振动频率，并与实验所得之氨分子振动频率作比较。

Furthermore, the effect of different carbon and nitrogen sources on phosphate solubilization of TK-46 was investigated.

结果］结果表明，碳源对转化子解磷能力影响较小，而氮源的作用较大，其中转化子在解磷过程中最适氮源是氨态氮。

Results show that ammonia volatilization was not detected in all the treatments during the tomato growing season. It was presumed that ammonia partial pressures on the surface soil were lower than the detection limit of the method, as a result of the low ammonical N concentration and low pH in the surface soil.

结果表明，番茄生长期间全部处理均未检测到氨挥发，其原因是土表氨分压低于检测灵敏度，较低的氨分压是由于表层土壤的铵态氮浓度和pH都不高所致。

Bifluoro nitrobenzene was the raw material of synthesis of asymmetry chromotropic acid bisazo fluoroarsen reagent, By way of ammonia substitution, arsonation, reduction and coupled reactions, bisazo fluoroarsen was synthesized.

以2，4—二氟硝基苯为起始原料，经过氨取代、胂酸化、还原、偶联反应合成了偶氮氟胂Ⅰ，然后分别选择不同的取代苯胺与偶氮氟胂Ⅰ偶联，合成了一系列的不对称变色酸偶氮氟胂。

In order to obtain versatile ulitity of host molecules, three new chiral calix [4] crown ethers containing aza, thio atoms bearing two chiral sites provided by -cysteine ester were synthesized by the condensation of calix [4] arene diacid dichloride with oligoethylene glycol bridged bis-amino acid methyl ester. All new compounds were characterized by NMR, MS and elemental analysis.

以-半胱氨酸为手性源，利用多甘醇二氯醚在碱性条件下对半胱氨酸巯基进行烷基化反应，成功地合成了多甘醇醚链桥联的半胱氨酸衍生物，醚化反应后，在高度稀释条件下与对叔丁基杯[4]芳烃二乙酰氯进行双功能基缩合反应成功地合成了新型的手性杯[4]含氮、硫杂冠醚，并利用〓H NMR、MS等谱图手段对其结构进行了表征。

The total amount of N loss through ammonia volatilization was N 0.37~3.04kg hm^(-2), accounting for1.31%~3.69% of the total N applied to Winter Radish The total N loss through ammonia volatilization enhanced with the increase in N application rate (p.05) and ex-pressed as y=0.1576e(superscript 0.0146x) and y=0.1826e(superscript 0.0112x) respectively.

不同施氮处理，春季累计氨挥发量为N0.67~5.16kg hm^(-2)，占施入肥料N的0.74%~2.24%；秋季累计氨挥发量为N0.37kg~3.04kg hm^(-2)，占施入肥料N的1.31%~3.69%。红壤旱地春秋二季氨挥发量均随施N量的提高而指数递增，其关系式分别为：y=0.1576e(上标 0.0146x)和y=0.1826e(上标 0.0112x)。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。