方法：采用放射免疫分析法和硝酸还原酶法测定20例HIE新生儿和20例正常新生儿血浆et与血清NO水平。
Methods: Plasma et levels were determined by using a radioimmunoassay kit, serum no levels were determined by using a nitrate reductase method in 20 newborn with HIE and 20 normal newborn.
超氧化物歧化酶（SOD）、过氧化物酶（POD）和硝酸还原酶（NR）活性也随氯化胆碱浓度的增大而明显提高。
The activities of superoxide dismutase (SOD), peroxidase (POD) and nitratase (NR) in leaves increased with increasing of concentrations of CC.
冻融交替作用明显地增强土壤中磷酸酶、硝酸还原酶和亚硝酸还原酶的活性。
The effect of alternative freezing and thawing can enhances the activities of some soil enzymes greatly, such as phosphatase, nitrate reductase and nitrite reductase.
结果表明，二氢茉莉酸丙酯提高了根系活力和叶片硝酸还原酶活性（NRA） ，增加叶绿素含量和可溶性蛋白含量，从而为高产奠定了良好的生理基础。
The results indicated PDJ could improve the vigor of root system and NRA of leaves, increase chlorophyll and soluble protein content, thus laying a better physiological foundation for high yield.
用硝酸还原酶法检测血浆和脑组织中NO含量。
间作系统中小麦根系活力和绿肥硝酸还原酶分别较单作增加了57.95%和87.56%，差异达显著水平。
Wheat root activity and nitrate reductase of green manure in intercropping increased 57.95% and 87.56% than that in single cropping, resp., with the differences at significant level.
芹菜叶绿素、硝酸还原酶活性和硝酸盐含量与氮肥施用量呈极显著的线性正相关。
Chlorophyll, NRA and nitrate content was positively related to the application quantity of nitrogen.
硝酸还原酶活性和根瘤固氮活性之间没有直接关系。
The NRA was not directly correlated with nitrogenase activity.
本论文对该菌株进行紫外诱变，筛选高产菌株，并研究其产亚硝酸盐还原酶的条件，所产亚硝酸盐还原酶的酶学性质和稳定性。
Effects of florfenicol on the activities of nitrate reductase, nitrite reductase and alkaline phosphatase in marine sediment were studied in laboratory by simulation experiment.
本论文对该菌株进行紫外诱变，筛选高产菌株，并研究其产亚硝酸盐还原酶的条件，所产亚硝酸盐还原酶的酶学性质和稳定性。
Effects of florfenicol on the activities of nitrate reductase, nitrite reductase and alkaline phosphatase in marine sediment were studied in laboratory by simulation experiment.
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