对EBC法、气相色谱法和化学发光法测定啤酒中的双乙酰含量进行了优化和比较。
The measuring methods for diacetyl content in beer including EBC method, GC method and chemical radiation method were optimized and compared.
本文讨论成品啤酒中双乙酰含量回升原因及保证双乙酰含量在啤酒保质期内符合要求的工艺控制措施；
This paper discuss the cause for the increase of diacetyl contents in beer products and the techniques for the control of diacetyl contents in the brewed beer during their quality-guaranteed period.
该研究推测的另一种可能是，低含量的酒精能刺激人体释放乙酰胆碱，这是人脑中一种能促进学习和记忆的化学物质。
Another possibility, the study speculated, is that low levels of alcohol could stimulate the release acetylcholine, a brain chemical believed to facilitate learning and memory.
目的：建立一种快速、准确的HPLC - ELSD法测定复方氨酚烷胺胶囊中盐酸金刚烷胺及对乙酰氨基酚的含量的方法。
Objective: To develop a rapid and accurate method for determining the contents of Amantadine Hydrochloride and Paracetamol in Qingke Capsules by HPLC-ELSD.
方法：以对比实验的方法，得出溶解对乙酰氨基酚最佳混合溶媒，并对其进行含量测定和稳定性的研究。
Methods: Attained optimal mixed solvent of paracetamol through comparison experiment, determined its content and studied its stability.
提出了一种使用乙酰丙酮作显色剂、结合分光光度法检测内墙涂料中甲醛含量的方法。
A method, combined with spectrophotometry, for determining formaldehyde content of interior architectural coatings with acetylacetone as developer was proposed.
将毛皮中的甲醛用人造汗液萃取后，用乙酰丙酮分光光度法检测，可以定量检测分析毛皮中甲醛的含量。
The formaldehyde in fur was extracted by artificial perspiration solution and the formaldehyde content in the extracted liquor was determined by acetylacetone spectrophotometric method.
对学习记忆机制分析结果表明，“小精灵”口服液可显著增加小鼠脑中的神经递质乙酰胆碱含量。
The result of learning and memory mechanism test showed that this liquid obviously increases the level of brain acetylcholine of mice.
实验表明，产物的乙酰基含量受合成温度和反应时间影响，其热致液晶的相转变温度和温域随乙酰基含量变化。
The experimental results indicated that reaction temperature and time were influence on acetyl content of APC products. Liquid crystalline phase transition changed with acetyl content .
对乙酰氧基苯甲酸与含磺酸基PET离聚物通过熔融共缩聚反应，获得一系列不同离子含量的液晶离聚物。
A series of polyester based liquid crystalline ionomers(LCI) with various sulfonate group content were prepared from p acetoxybenzoic acid and sulfonated PET ionomers through melt copolycondensation.
那些喂食苹果汁的小鼠大脑中乙酰胆碱含量增加。
Among those fed the apple juice-supplemented diet, the mice showed an increased production of acetylcholine in their brains.
文中对乙酰丙酮在配制后不同时间的应用作了一系列显色试验，以探讨试剂在不同时间显色结果对甲醛含量测试结果的定量影响。
A series of color test are carried out to determine the influence of developing result at different time after preparing the acetylacetone on formaldehyde content measuring.
通过发酵试验发现这些菌株的代谢产物双乙酰和高级醇的含量，双乙酰的还原速度存在较大的差异。
The fermentation research showed that these strains had different reducing speed of diacetyl and the contents of diacetyl and higher alcohols.
本工作首先对商品壳聚糖进行水份含量，脱乙酰度等性能测定；
This work first carries on the water content, the degree of chitin deacetylation of the merchandise chitosan.
目的探讨大鼠老化过程中骨骼肌乙酰胆碱受体的含量及功能变化。
Objective Changes in the contents and function of nicotine acetylcholine receptors in skeletal muscle of rats during aging.
薄荷醇和薄荷酮含量的测定方法有旋光测定法、折光指数法及乙酰化法。
There are some other ways to analyzed the contents of menthol and menthone, such as polarimetry, refraction index method and acetylation method.
结论该方法简便、准确、灵敏、重现性良好，适用于对乙酰氨基酚缓释片中对乙酰氨基酚的含量测定。
CONCLUSION the method is simplicity, accurate, sensitive, reproducible and is suitable for the content determination of paracetamol in paracetamol controlled-release tablets.
结果表明：酵母细胞的出芽率、生长速度、代谢产物乙醇的产量、付产物双乙酰的含量以及有关酶类的活力均发生了变化。
The results are that germination capacity, growth speed, the yield of metabolic product ethanol, the content of by-product biacetyl and activity of related enzymes for the cells change obviously.
方法：采用永停滴定法，HPLC法分别测定不同批号的感冒清片的对乙酰氨基酚含量。
Methods: the paracetamol contents of the different samples of Ganmaoqing Tablets were determined by the dead stop titration and HPLC, respectively.
目的：采用高效液相色谱法测定复方对乙酰氨基酚分散片的含量。
Objective: a high performance liquid chromatography method was established to determine the content of Compound paracetamol dispersible tablets.
结果行为学检测结果表明，血管性痴呆大鼠有明显的学习、记忆障碍，且该组大鼠海马组织乙酰胆碱含量持续降低。
Results The created rat vascular dementia model showed significant alteration in leaning and memory function, and obvious decreased content of acetylcholine in hippocampal tissues.
目的对小儿氨酚匹林片中阿司匹林、对乙酰氨基酚的含量进行不确定度评价。
OBJECTIVE To evaluate uncertainty in measures of the content of pediatric aspirin and paracetamol tablets.
结果正常组肝组织内乙酰胆碱受体含量明显低于模型组（P<0.01），且和络舒肝组乙酰胆碱受体含量低于模型组（P<0.05）。
Results The level of acetylcholine receptorswas obviously lower in the control group than in the model group(P<0.01), and lower in the HLSG-treated group than in the model group(P<0.05).
方法采用品红亚硫酸法和乙酰丙酮法测定吊白块中甲醛含量，并计算样品中吊白块的含量。
Methods The content of formaldehyde in rongalite was determined by sulfurous acid, magenta and acetylacetone spectrophotometry respectively.
双乙酰是啤酒中重要的风味物质，它的含量是啤酒质量的一个重要指标。
The content of the diacetyl, as an important flavor substance in beer, was an important index to control beer's quality.
目的：从苦地丁中制备紫堇灵和乙酰紫堇灵，并建立同时测定二者含量的反相高效液相色谱法。
Objective: To isolate and purify corynoline and acetylcorynoline from Corydalis bungeana and develop a reversed phase HPLC method of determining the two components in C.
双乙酰是衡量啤酒风味成熟与否的决定性指标，其含量超过其味阈值，会给啤酒带来不愉快的馊饭味，影响啤酒风味。
The content of diacetyl is the decisive index to measure whether the beer flavor got matured. Its content above the taste threshold value in beer would result in unpleasant sour beer taste.
双乙酰，乙偶姻含量有大幅度增加，其含量比对照酒高一倍。
The contents of diacetyl and acetoin in wine increased significantly and the average was twice as much as that in controlled wine.
双乙酰，乙偶姻含量有大幅度增加，其含量比对照酒高一倍。
The contents of diacetyl and acetoin in wine increased significantly and the average was twice as much as that in controlled wine.
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