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- A Study On Improving the Accuracy of Total Nitrogen Level Determined by Ultraviolet Spectrophotometer 提高紫外分光光度法测定水中总氮方法精确度的研究
- Correlation Between Corn Leaf Spectral Reflectance and Leaf Total Nitrogen and Chlorophyll Content Under Different Nitrogen Level 不同氮处理春玉米叶片光谱反射率与叶片全氮和叶绿素含量的相关研究
- Total Nitrogen level 总氮
- Determination of total nitrogen (Kjeldahl). 英文名称: Soils quality.
- The total nitrogen and the chlorophylls a concn.had certain relativity. 总氮和叶绿素浓度有一定的相关性;
- When wastewater is treated by eco-filter,the level of pollutants such as COD,BOD_5,total nitrogen and total phosphorus decreases and the ratios of nitrogen forms are significantly different between the influent and the effluent. 污水经生态滤池(MEEF)处理后;出水中化学耗氧量(COD)、生物需氧量(BOD5)、总氮(TN)和总磷(TP)的质量浓度降低;氮的形态构成与进水有较大差异.
- The total nitrogen of PMC, PMS, PMST and PMMR were 2.30%, 2.28%, 2.50% and 2.67% respectively. But the nitrogen changing level of contract treatment(net Pig Manure) was not significant. 四个处理的全氮含量均在堆肥前8d有一小幅度下降,而后逐渐上升,到堆肥结束时米糠(PMC)、锯末(PMSD)、稻草(PMST)、菌渣(PMMR)处理的全氮含量分别为2.;30%25、2
- The results showed that as nitrogen level increased the amylase activity enhanced, the nitratase activity enhanced. 结果表明,随着氮素水平的提高,淀粉酶活性有升高趋势,烟叶硝酸还原酶活性呈上升趋势。
- The methods for determining total nitrogen and basic nitrides content in diesel oil are described. 摘要介绍了测定柴油中总氮及碱性氮含量的各种方法。
- Applying manure fertilizer or NPM, increasing legume crops in rotation were effective ways to improve nitrogen level in soil. 施用有机肥或氮磷有机肥配施、轮作中增加豆科作物(或牧草)能有效地调节改善土壤氮素状况。
- Maize straw returning to the field can increase the soil total nitrogen and inorganic nitrogen content. 秸秆还田增加了土壤全氮和无机氮含量。
- Total inorganic nitrogen levels also went into significant decline after 2002, particularly in the eastern part of the Harbour. 此外,总无机氮水平在2002年开始也出现显著下降趋势,其中以海港东部水域的变化尤为显著。
- Total Nitrogen in Lubricating Oils by Modified Kjeldahl Method, Method of Test for (05. 用改良的基耶达法测定润滑油中总氮量的试验方法(05。
- Derivate spectra have the trend of shift to long wavelength direction and exist "two peak" phenomena at more significant increase of the nitrogen level. 一阶导数光谱随着施氮水平的增加,具有向长波方向移动的趋势,同时随施氮水平的增加,“双峰”现象则愈显著。
- Topdressing nitrogen treatment had no obvious effect to total nitrogen in soil, but it had a stronger effect to alkalined-nitrogen. 追氮处理对土壤全氮没有明显的影响,但对土壤大麦碱解氮的影响比较大。
- But because the tests detect total nitrogen, from both protein and nonprotein alike, they do not truly measure protein. 但这些测试方法检测的是来自蛋白质和非蛋白质的全部氮含量,而不是真的直接测量蛋白质。
- The total nitrogen content of compound fertilizer have been studied using the Kjeldahl Method. 摘要采用凯氏定氮法,对复合肥料总氮含量进行了测定研究。
- The chroma,the total nitrogen,the total acid,pH,alcoholicity,diacetyl and CO2 of the product beer were close to that of Zhujiang beer. 总氮、色度、pH、总酸、酒精度、双乙酰、CO2与所测的珠江啤酒的指标接近。
- No interphase precipitation was found. A detailed TEM/PEELS analysis of the fine particles showed that they are essentially nitrides (N/Metal?0.63-0.82) containing increasingly less carbon as the nitrogen level increased. 通过TEM/PEELS对细小颗粒的详细分析表明;这些粒子主要是氮化物(N/Metal?0.;63-0
- The experiment indicates that the ammonia nitrogen content in the synthesized CNN is 22.78%,and its total nitrogen content comes to 35.08%. 实验表明;合成的CNN中氨态氮含量22.;78%25;总氮含量35