fixed nitrogen meaning in Chinese
固定氮
化合氮
Examples
- Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments . the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose , sucrose , malic acid , mannitol ) , propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum , at a ph range of 4 to 8 . 5 , at a saline concentration range of 0 . 01 % to 1 . 5 % ; low nlv " concentration had little effect on its nitrogenase activity . ara could also be detected when it grow in the culture media with 5mmol / l ntv "
W12菌株对环境因子的适应性研究：无氮培养条件下，测定温度、碳源、酸碱度、渗透压对w12生长及固氮能力的影响，结果表明，在15 - 40下均能生长并表达固氮酶活性，其最适生长及固氮的温度为25 - 35 ；能利用葡萄糖、蔗糖、苹果酸、甘露醇等多种碳源生长并固氮，当培养基中同时存在蔗糖和苹果酸时，细菌生长和固氮活性最强；在偏酸和偏碱的条件下( ph4 . 5 - 8 . 5 )均能保持较强的生长势和较高的固氮酶活性，并能通过调节自身代谢平衡并适应环境的酸、碱性变化，使培养液趋于中性：能耐受较高的渗透压，培养液中卜、 5 naci浓度对其生长和固氮酶活性影响不大，当naci浓度升至2时，菌株的生长势及固氮酶活性才有所下降：低浓度的铰对其固氮酶活性影响不大，在0 - Abstract : in ureide - transporting legumes ， ureides ( allantoin and allantoic acid ) are major transportform of biological fixed nitrogen . the distribution ， properties ， structure and regulation of plant allantoinase were reviewed in detail . the advances in the recent studies on allantoate amidohydrolase and ureidoglycolate amidohydrolase were introduced . and the works desired to be done were pointed out
文摘:全面综述植物酰脲降解代谢酶的研究现况，概述植物尿囊素酶的分布、性质、结构，以及调节控制，并简介植物尿囊酸酰胺水解酶和脲基乙醇酸酰胺水解酶的研究近况，同时指出待研究的方向。 - With adsorption and ion exchangeability , it is mainly used as additive in feed , it can absorb ammonia , fix nitrogen , delay the time nutriments stay in alimentary canal , absorb detrimental substance , improve the function of digest , supply many microelements and macroelemnts for livestocks
主要用作饲料的添加剂，具有吸附性和离子交换性，能吸氨固氮延缓营养物质通过消化道的时间吸附肠道有害物质，改善消化机能同时可以供给畜禽多种微量和常量元素，促进增产增重，提高饲料报酬。