1) ultraviolet absorption spectrum
紫外吸收光谱
1.
On the basis of a general review on the testing indexes stipulated in local and enterprises'standards, it is suggested that the ultraviolet absorption spectrum of silk peptide be used as anexperimental item to identify the product; and the characteristics of silk peptide amino acidcomposition used as a testing item in order to differentiate the peptide from other proteinhydrolysates.
建议丝素肽的紫外吸收光谱应作为确证产品的试验项目。
2.
Based on the mechanism that bromo benzene(BB) can be absorbed by ultraviolet absorption, the refractive index distribution of the PMMABB gradedindex polymer preform is tested by ultraviolet absorption spectrum technique in the laboratory, and the method is introduced in detail.
利用紫外光对溴苯 (BB)的吸收作用 ,采用紫外吸收光谱法对PMMA BB梯度型聚合物光纤预制棒的折射率分布进行了间接测试 。
3.
The interaction of morin,kaempferol,quercetin hydrate and myricetin with herring sperm DNA were studied in this paper by ultraviolet absorption spectrum,melting curve,and bingding constant,respectively.
紫外吸收光谱表明:这四种黄酮化合物与DNA作用后,均导致DNA的最大吸收峰发生增色效应,桑色素和山萘酚使最大吸收峰红移,而槲皮素或杨梅素则使最大吸收峰发生蓝移。
2) UV absorption spectrum
紫外吸收光谱
1.
Effects of different extration conditions on UV absorption spectrum of cassia seed extract;
不同浸出条件对决明子紫外吸收光谱的影响
2.
The calculations showed that the UV absorption spectrum of the compounds calculated by TD-DFT method agrees well with the experimental data.
运用密度泛函DFT B3LYP／6-31G(d)方法对线型(a)和星型(b)平面噻吩类低聚物衍生物分别进行了几何构型优化,并采用含时密度泛函TD-DFT B3LYP／6-31G(d)方法计算了其紫外吸收光谱。
3.
The UV absorption spectrums of the two doses of each medicinal herb sample dried by different method are studied and compared.
选取药用部分不同的中草药２５种，分别用传统干燥方法和温室型太阳能远红外综合干燥装置干燥同种样品，研究样品的紫外吸收光谱。
3) UV
紫外吸收光谱
1.
N,N'-bis-(1-phenyl-3-methyl-4-α-furanmethenylpyrazoline-5)-enedienimine was synthesized,and its spectra of H NMR and UV was studied.
2 en),对其分子结构和核磁共振氢谱、紫外吸收光谱等进行了研究,并借助CSChemoffice的MM2方法对PMFP。
2.
Methods Powder slide paraffin sectionslide,UV,TLC were used.
方法粉末制片法、石蜡切片法、紫外吸收光谱法、薄层色谱法。
3.
Methods: Powder, fluorescene analysis, paraffin section, UV, TLC were used.
方法 :粉末制片法、石蜡切片法、荧光法、紫外吸收光谱法、薄层色谱法。
4) ultraviolet absorption spectra
紫外吸收光谱
1.
The polymeric species were analyzed by Ferron-complexation timed spectrophotometric method and ultraviolet absorption spectra of ferrum.
基于生物催化氧化技术进行了生物聚合铁(BPFS)的制备研究,应用Ferron逐时络合比色法和铁的紫外吸收光谱对其形态进行分析,考察其形态分布与絮凝性能之间的关系,发现盐基度在1。
5) UV spectrum
紫外吸收光谱
1.
This paper has studied the UV spectrum of taxol and fluorescence spectrum of BSA taxol conjugate.
2 实验方法 紫杉醇的紫外吸收光谱 :精确称取紫杉醇 9。
2.
Methods: The stability of forsythiaside was studied by using UV spectrum obsiving the changes of spectrums in different conditions.
方法 :从酸强度、碱强度和温度三个方面 ,利用紫外吸收光谱仪考察了连翘酯苷的稳定性。
6) absorption spectrum
紫外吸收光谱
1.
Those results were further analyzed and indicated there was obvious difference in the absorption spectrum of culture medium When HeLa cells were treated by TSA with different doses at the same time.
本研究采集了不同剂量曲古菌素A(TSA)分别处理24h和48h下的人宫颈癌细胞株(HeLa cell)的培养基RPMI1640的紫外吸收光谱。
补充资料：X射线吸收光谱
X射线吸收光谱
X--ray absorPtion sPeetrum
X射线吸收光谱x--ray absorption Speetrumx射线透过物质时，基于吸收效应所产生的强度随波长变化的图谱。 x射线的吸收特征X射线束透过物质后，其减弱服从指数衰减定律。吸收系数包括光电吸收和散射吸收两部分，一般是前者远大于后者。物质的质量吸收系数是入射X射线波长及其所含元素的原子序数的函数。当吸收物质一定时，吸收系数先是近似随波长的三次方而增加，但到某一波长时，则发生陡然下降;随后又会出现类似的增长和下降规律。这些吸收跃变所对应的波长称为吸收限。吸收限是吸收元素的特征量，标志入射X射线的光子能量恰好能够逐出该原子中的K、L、M……层上电子的能量。利用吸收限的测量值，可以作出原子能级图，也是选择滤波片材料的依据。进一步的分析表明，吸收曲线在吸收限短波侧附近的变化并不是单调平滑的，而是表现出不同程度的振荡现象，称为X射线吸收限的精细结构(X射线吸收近限谱和扩展X射线吸收谱)。它是由吸收原子之周邻原子对出射光电子的背散射引起的，是该原子配位环境的一种反映。 X射线吸收谱分析法测量透过样品的X射线强度随波长的变化，根据所揭示的吸收限的波长，即可鉴定样品中所存在的元素。再通过测定各吸收限上所出现的吸收强度的变化，还可进行定量分析。在定量分析中，尚有利用单色或连续X射线的直接吸收分析法。X射线吸收分析法的分辨率和灵敏度都较荧光分析法为低，且应用有其局限性。目前几乎完全限于分析轻元素基体中所含的某些重元素，如汽油中所含铅的测定。 (张晋远)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条