核黄素

The results indicate that integration of the operon by a single-cross or double-cross event causes an increase of 14%~19% or 40%~44% in riboflavin production, respectively.

结果表明，核黄素操纵子通过单交换重组方式整合在上述位点可使核黄素合成量增加14%~19%，而通过双交换重组方式整合在amyE或thrC位点可使核黄素合成量增加40%~44%。

Riboflavin impurity in synthetic flavin mononucleotide was detected by the proposed method.

最后，将所建立的方法应用于黄素单核苷酸钠合成品中的核黄素杂质的检测，合成品中的核黄素杂质含量约为3%左右，符合产品规格。

Compared with batch mode, intermittent fed-batch mode improved riboflavin production slightly, the constant rate and glucose-limited fed-batch modes can make a significant increase in both dry cell mass and riboflavin production.

同间歇培养相比，分批流加培养能微弱提高重组菌的核黄素产量，而恒速流加和葡萄糖限制流加均能显著提高菌体量和核黄素产量。

Objective To develop the assay methods of riboflavin in riboflavin sodium phosphate.

目的 建立核黄素磷酸钠中核黄素的含量测定方法。

Enhancing the stability of riboflavin operon integrated in the chromosome results in the improvement of riboflavin production.

增强核黄素操纵子在B.subtilis 24R7染色体上的稳定性可以提高核黄素的合成量。

In rural areas, the intakes of riboflavin and calcium were only 59.21% and 51.23% of RNI or AI, separatedly, and the proportion of pregnant women were about 80% whose intakes of riboflavin and calcium were lower, in addition, thiamin, iron and zinc over 50%.

在农村孕妇中，钙和核黄素的平均摄入量仅达RNI或AI的51.23%和59.21%，核黄素和钙摄入不足的比例达到80%左右，农村孕妇摄入不足比例超过50%的营养素还有硫胺素、铁和锌。

The contents of thiamin, riboflavin, nicotinic acid, total protein and xylose and the weight were determined separately for each part as well as for the whole grain.

合并吸收层和胚两部中核黄素的含量，约相等或稍高于糊粉层中核黄素的含量；合并吸收层，胚和糊粉层三者约占总含量50—60％。

As barbituric acid and riboflavin was respectively added into PC/4 coliposomal solution, the absorbivity of barbituric acid at 258 nm, and riboflavin at 222 nm and 264 nm decreased slowly with time. The onset of a hypochromic effect can be ascribed to adeninebarbituric acid or riboflavin interaction.

紫外可见光谱研究表明，底物巴比妥酸在258 nm的吸收峰，核黄素在222 am，264 nm的吸收峰随时间的延长而逐渐降低，这种减色作用归因于脂质体内的巴比妥酸和核黄素在亲脂区分别与双亲化合物上的腺嘌呤形成了氢键。

The paper studied the nutrient effect of Riboflavin on Bonasa bonasia by adding different doses to diets of breeding and young Bonasa bonasias.

试验通过在种鸡和雏鸡日粮中添加不同剂量的核黄素，研究了核黄素对花尾榛鸡的营养作用。

Cages of breeding Bonasa bonasias were randomly distributed to diets containing 6.8mg/kg and 13.6mg/kg of Riboflavin.

将16笼种鸡随机分为2组，每组8笼，Ⅰ组种鸡日粮中添加6.8mg/kg核黄素，Ⅱ组添加13.6mg/kg核黄素。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。