查询词典 nitrogen

Under normal circumstances, this is not a problem because food proteins contain only the major components of nitrogen and other major components are not nitrogen, the Kjeldahl method is a very accurate determination of protein content .

在通常情况下，这不是个问题，因为食物中的主要成分只有蛋白质含有氮，其他主要成分都不含氮，因此凯氏定氮法是一种很准确的测定蛋白质含量的方法。

The results show that after adding RBW 0.5-2.5% bentonite, the highest removal of COD and Kjeldahl Nitrogen was 32% and 24%; after adding RWB 1~5% lime, the highest removal of COD and Kjeldahl Nitrogen was 34% and 40%.

结果表明按土水比添加0.5%~2.5%的膨润土处理后，废水中的COD和凯氏氮的最高去除率分别为32%和24%；添加1%~5%的生石灰处理后，废水中的COD和凯氏氮的最高去除率分别为34%和40%。

The influence of pretreatment process on the nitrogen content of soybean protein fibre was studied. The nitrogen content of the fibre was determined by Kjeldahl analysis method.

运用凯氏定氮法对大豆蛋白纤维的前处理工艺进行优化研究，根据处理前后含氮量的变化来表征大豆蛋白纤维蛋白质含量的变化情况。

So Kjeldahl method is not actually measured the protein content, but by measuring the content of nitrogen to project protein content, it is clear that if there are other samples contain nitrogen compounds, this approach is not accurate.

所以凯氏定氮法实际上测的不是蛋白质含量，而是通过测氮含量来推算蛋白质含量，显然，如果样品中还有其他化合物含有氮，这个方法就不准确了。

It is concluded that the soil easily mineralizable nitrogen and microbial biomass nitrogen can be taken as the biological ...

在盆栽试验条件下，土壤易矿化有机态氮和种植前土壤微生物态氮能够较好地反映土壤氮素的矿化和供应能力，可以作为土壤氮素的生物有效性指标。

Soil easily mineralizable nitrogen ; microbial biomass nitrogen ; biological available index

易矿化有机态氮；微生物态氮；生物有效性

The results show that the2 0～ 40 cm and40～ 60 cm layers for the red loessial soil and2 0～ 40 cm layer for the red loessial soil had a large amount of easily mineralizable nitrogen besides the0～ 2 0 cm layer, but the easily mineralizable nitrogen was little...

总体上看，红油土中氮素的矿化和硝化作用强于红垆土。铵态氮肥在粘粒含量少、有机质含量高土层中的迅速减少主要归咎于硝化，而在粘粒含量多、有机质含量少的土层，主要取决于矿物固定

When initial NO3--N was leached, the correlation coefficients between soil initial NO3--N and mineral N extracted by CaCl2 before aerobic incubation with raygrass nitrogen uptake were decreased to 0.613 and 0.607, respectively, and both reached 5% significantly level. However, the correlation coefficients between mineralizable N extracted by aerobic incubation, soil initial mineral N and mineralizable N extracted by aerobic incubation, N0 and soil initial mineral N and N0 with raygrass nitrogen uptake were raised obviously, and all reached 5% and 1% significant level.

以不包括土壤起始NO3--N盆栽试验植物吸氮量为参比，通气培养前CaCl2淋洗起始NO3--N和起始矿质氮与五期黑麦草地上部氮素累积量间的相关性尽管有所降低，但相关性仍达5%显著水平，相关系数分别为0.613和0.607；而通气培养30周矿化氮素、土壤起始矿质氮+通气培养30周矿化氮素、N0及N0+起始矿质氮与五期黑麦草地上部吸氮量的相关系数却明显提高，相关系数分别为0.718，0.782，0.688 和0.640，均达5%或1%显著水平。

Photoautotrophic growth and mixotrophic growth in nitrogen-containing mediumwere better than those in nitrogen-free medium,respectively.

鱼腥藻7120在含氮培养基中的光自养生长和混合营养生长优于在无氮培养基中。

Among the open-chain crown ethers and cryptands with a same structure, the compounds disubstituted at the amide nitrogen atoms show the larger extractability for Am and Eu than the monosubstituted ones. The compounds disubstituted at the amide nitrogen atoms by two phenyl groups show the larger extractability for Am and Eu than those by two alkyl groups.

3在结构相同的开链冠醚和开链穴醚中，酰胺氮原子上二取代化合物对Am和Eu的萃取能力大于一取代化合物；酰胺氮原子上两个取代基都是苯基的化合物对Am和Eu的萃取能力大于两个取代基都是烷基的化合物。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。