| 1. | Comparison of element characteristic peak counts for porcelain pieces with different shape before and after correction were made 给出了对不同形状瓷片中元素特徵峰计数校正前后的比较。 |
| 2. | Four common peaks can be found in the electropherograms of cassia seeds of six species , the characteristic peaks can also be observed 确定4个峰为六种决明属植物种子的共有峰,并得到各自的特征峰。 |
| 3. | The results showed that when hogwash oil into edible oil upwards of 10 % , the characteristic peak of cholesterol could be observed obviously 利用极性毛细管色谱柱可将油脂中的胆固醇和植物甾醇很好地分离,从而可鉴别油样中是否混有地沟油。 |
| 4. | Finally there were 7 common characteristic peaks , overlap ratio of the characteristic peaks were more than 70 % , and the range of relative peak aera was less than 10 % 冬虫夏草cs - js菌系共有特征峰7个,特征峰的重叠率大于70 ,特征峰的相对峰面积范围小于10 。 |
| 5. | The results showed that the infrared spectrum characteristic peaks were different to some extent ; therefore , the technique can identify the chloride butyl rubber bottle closure and brominized butyl rubber bottle closures without destroying samples rapidly and accurately 结果表明:两者的红外光谱特征峰存在一定程度的差异,根据这种差异可以快速准确的对氯化丁基橡胶和溴化丁基橡胶瓶塞进行鉴别,同时该技术具有无损分析的特点。 |
| 6. | In this review , the research of the structures on the domestic silkworm ( bombyx mori ) , the wild silkworms ( mainly tussah ) as well as the spiders ' silk proteins with the infrared and raman spectroscopy are discussed , and the characteristic peaks of silk proteins related to the various conformations are summarized 本文综述了红外光谱和拉曼光谱在家蚕、野蚕(主要是柞蚕)和蜘蛛丝蛋白研究方面的应用,并对表征丝蛋白各种构象的红外和拉曼特征峰进行了较为全面的归纳总结。 |
| 7. | The fluorescence spectrum ( fls ) of lra excited at 280nm and 295nm showed a maximum peak at 338nm . the characteristic peak of tyr did not exist , and it showed that the fluorescence energy of tyr was transformed to trp and strength the fluorescence of trp . when lra was excited at 295nm , the fls showed a maximum peak at 338nm , the max of fluorescence emission spectrum blue - shifted more than 10nm compared with the max of free tyr ( 348nm ) Lra的荧光光谱研究表明在激发光波长为280nm时,其最大荧光发射峰在338nm处,荧光光谱未见有酪氨酸( tyr )残基的发射峰,表明tyr残基的荧光基本上通过能量转移到trp上,使荧光强度增强,在激发光谱为295nm时,其最大荧光发射峰338nm ,比游离trp的最大荧光发射峰( 348lun )蓝移了近10nln ,说明trp周围的极性较弱,处于疏水的微环境。 |
| 8. | Peg and superfluous aa reaction by complete concatenation method , the esterify production " esterify water " and acid number were mensurated , it shows that the esterify reaction would be processed under 100 esterify temperature and with amine accelerantthe tide of esterify reaction was substantiated by ir . in the ir spectrum , the characteristic peak of hydroxy of peg and carboxyl of aa were weakened . and the ester link of peg was reinforce . the " esterify water " was increased gradually and the acid number of esterify production was debased gradually along with the extent of esterify time and the augmentation of molecular weight of peg 通过聚乙二醇与过量的丙烯酸采用全连续法进行反应,测定酯化产物“酯化水”和酸值等宏观手段反映出在胺类促进剂、 100的酯化温度等条件下的酯化进程,而利用红外光谱( ir )分析所反映的聚乙二醇的羟基和丙烯酸的羧基特征峰减弱,而pea的酯基特征峰加强等特征进一步证实了宏观手段所表现出来的酯化趋势:随着酯化时间的延长和聚乙二醇分子量的增大,产生的“酯化水”逐渐增加,酯化产物的酸值逐渐降低;从酯化时间看,当反应时间达到300min时,酯化物的酸值达到最小,而从ir分析来看,酯化物pea4的羟基峰在300min时减弱到最小, pea23在120min时羟基峰的表现出酯化基本完全。 |