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similarity index
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  相似指数
    The guantitative determination method of similarity and the concept of similarity index among mutiple food production lines were discussed. The calculating method of optimization for food production line and an application example are provided.
    讨论了混合型食品生产线之间的相似度的量化测度——相似指数的概念,给出了食品生产线的优化计算方法和一个应用实例。
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    The calibration curve was linear over a range from 0.25μg/ml_ to 50.0μg/mL with a coefficient of 0.9999. Qualitative analysis was performed with retention time and DAD spectrum similarity index value. Adding 250μg auramine O standard in 5.0g sample, the recoveries were 95.0%(n=6) and relative standard deviation was 1.5%(n=6).
    方法线性范围为0.25-50μg/mL(r=0.9999),在5.0g 样品中加入250μg标准物质的回收率及相对标准偏差(RSD)分别为95.0%(n=6)和1.5%(n=6)。
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    Qualitative analysis was performed with retention time and DAD spectrum similarity index value. The calibration curve was linear over a range from 0.1μg/ml to 50.0 μg/ml with a coefficient of 0.99986.The lowest detected limit was 0.01mg/kg after concentrated.
    方法线性范围为0.1 ̄50μg/ml(r=0.99986),经浓缩后样品最低检测限可达0.01mg/kg。
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  similarity index
32.3), and within-group similarity index APS (0.607 vs.
      
32.3), and within-group similarity index APS (0.607 vs.
      
guentherpetersi lizards were characterized by monophyletic DNA fingerprint profiles for the loci detected by the (GACA)4, (GGCA)4, and (CAC)5 probes, in terms of intrapopulation similarity index constituting S = 0.96.
      
In the framework of this algorithm, X-ray powder diffraction patterns are compared using a new similarity index.
      
Unlike the indices traditionally employed in X-ray powder diffraction analysis, the new similarity index can be applied even in the case of overlapping peaks and large differences in unit cell parameters.
      
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The similarity indices of each pair of amino acids are deduced from the mutation frequencies of amino acids which are taken from the molecular evolution data.The influences of amino acid mutation on the secodary structures of proteins are also discussed.

本文由分子进化数据从氨基酸的突变频率求出每一对氨基酸的相似指标,并讨论氨基酸突变对蛋白质二级结构的影响.

The guantitative determination method of similarity and the concept of similarity index among mutiple food production lines were discussed. The calculating method of optimization for food production line and an application example are provided.

讨论了混合型食品生产线之间的相似度的量化测度——相似指数的概念,给出了食品生产线的优化计算方法和一个应用实例。

A method for determines of β-phenylethanol in Chinese rice wine by high performance liquid chromatography-diode array detector(DAD)was studied. In this method, a Lichrospher DR○ 100 ODS-C 18 column was used with 0.02mol/L potassium phosphate monobasic buffer (pH4.5) and methanol (55∶45, V/V) as mobile phase. The flow rate was 1.0*#mL/min. A diode array detector was used and the detection wavelength was 210*#nm. The calibration curve was linear over a range from 5.0*#μg/mL to 40.0*#μg/mL with a correlation...

A method for determines of β-phenylethanol in Chinese rice wine by high performance liquid chromatography-diode array detector(DAD)was studied. In this method, a Lichrospher DR○ 100 ODS-C 18 column was used with 0.02mol/L potassium phosphate monobasic buffer (pH4.5) and methanol (55∶45, V/V) as mobile phase. The flow rate was 1.0*#mL/min. A diode array detector was used and the detection wavelength was 210*#nm. The calibration curve was linear over a range from 5.0*#μg/mL to 40.0*#μg/mL with a correlation coefficient of 0.9999. Qualitative analysis was performed with retention time and DAD spectrum similarity index value. The detection limit was 0.2*#μg/mL, the relative standard deviation was 0.74%(n=7), and the recoveries were 99.1%±0.63%(n=5). The determination results show no significant difference between this method and gas chromatography(P<0.05).

研究了以液相色谱 二极管阵列检测法分离测定黄酒中 β 苯乙醇的方法。采用Lichro spherR○1 0 0ODS C18柱 ,以 0 0 2mol/LKH2 PO4 溶液 (pH4 5 ) 甲醇 (体积比为 5 5∶45 )作流动相 ,流速 1 0mL/min ,用二极管阵列检测器于 2 1 0nm下进行检测 ,并以保留时间和光谱图相似性系数进行定性。方法线性范围为 5 0~ 40 0 μg/mL(r =0 9999) ,检测限 0 2 μg/mL ,相对标准偏差为 0 74% (n =7) ,回收率为 99 1 % ± 0 63 % (n =5 )。测定结果与气相色谱法 (GC法 )无显著性差异 (P <0 0 5 )。

 
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