氮循环

The experiment results showed that the relative growth rates, feed modulus, protein reservation rate, contents of magnesium and small peptides in plasma on grass carps in 0.5% enzymatic casein group were significantly higher than those in 0.5% casein group and 0.5% acidify hydrolyzed casein group p

草鱼饵料中添加一定比例的小肽可提高饲料表观消化率和蛋白消化率，增加血液循环中生物活性肽的含量，减少肝、胰脏和肠系膜脂肪储积，提高机体对饵料中氨基酸的利用率，从而增加体内氮沉积，提高生长速度。

Analysis of ratio of hydrogen to nitrogen in synthetic cyclic gas by approximate calculation was introduced and compared with gas chromatography.

介绍采用近似计算方法来计算合成塔循环气氢氮比的分析方法，并将其分析结果与气相色谱仪分析方法相比较，表明该分析方法是可行的。

There is an oxygen-nitrogen-inert GAS atmosphere of suitable pressure and a moderate weather cycle.

这里有压力适当的氧、氮、惰性气体混合大气层和温和的气候循环。

The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements.

近20年由於「气相同位素比值质谱仪」的改良和氢、氧、碳、氮和硫等稳定同位素的广泛研究，稳定同位素的研究技术已实质增加我们对於这些元素在自然生態系中生地化循环的瞭解。

It will provide scientific basis for applying fertilizer rationly during biogeochemistry cycles of C, N and global climatic change.

为农田生态系统碳、氮的生物地球化学循环及全球变化下农业生产中肥料的合理施用提供科学依据。

Methods: Parallel-plate-flow-chamber was used to assay the influence of shear stress on endothelial cells morphology and cytoskeleton and apoptosis and NO secretion. endothelial cells morphology was observed under microscopy, cytoskeleton was showed by Coomassie brilliant blue staining, fluorescence stain, and transmission electron microscopy, apoptosis was detected by FCM, NO of circulating culture medium was assayed by NO kit.

细胞形态显微镜下直接观察；细胞骨架通过考马斯亮蓝染色、荧光标记和透射电镜进行观察；细胞凋亡通过流式细胞仪检测进行分析，一氧化氮通过流动循环培养基的收集后应用检测试剂盒进行检测分析。

Decomposition of ammonia by ozonation in the presence of bromide was beneficial for cold water fish recirculating culture system.

臭氧催化氧化降解氨氮是一种有效的水处理方式，对于冷水性鱼类工厂化养殖的循环水体处理具有重要的实用价值。

Nutrient cycle of rubber tea chicken eco agricultural model—a typical tro pical agro forestry system in Wenchang municipality of Hainan Province was studied with quantitative experiment and qualitative analysis compared with rubber and rubber tea systems.

结果表明，胶—茶—鸡农林复合系统的氮、磷输入、输出量最大，系统外物质投入率比另两系统明显减少，系统内养分循环量增加，因此，该系统具有较合理的物质循环结构。

Considering many biophysics processes such as the atmosphere,hydrology,plant leaf N content et al.a multiple layer,two-leaf canopy model for predicting of mass transportation and energy exchange between plant canopies and the atmosphere has developed after dividing the canopy height into three layers,and the sunlit and shaded leaf area index was computed respectively at different layers through introducing a foliage clumping index,it is important to distinguish the spatial light distribution and so leaf photsynthesis.

多层—双叶模型对冠层上方碳通量的模拟：综合考虑农田水、热因子及叶片氮含量的非线性垂直分布对碳、水循环的影响，将农田按植株高度分为上、中、下三层，并通过叶片集聚指数计算阴、阳叶面积以区分叶片的空间分布受光状态，建立了均匀农田与大气间物质输送和能量交换的多层—双叶模型，对农田冠层上方基于光合—呼吸的碳循环过程进行了模拟应用研究。

The Integrated oxidation ditch with vertical circle is characterized by the unique vertical circle mode of mixed liquid.

立体循环一体化氧化沟采用立体循环方式，自然形成好氧区和缺氧区，脱氮效果显著。

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。