This paper reports accurate use of silanized support based substrate for surface-enhanced Raman spectroscopy（SERS） determination of illegal additives chrysoidin and malachite green. Detection of these illegal additi...This paper reports accurate use of silanized support based substrate for surface-enhanced Raman spectroscopy（SERS） determination of illegal additives chrysoidin and malachite green. Detection of these illegal additives is very meaningful and the developed method meets this objective in a simple, rapid and cost effective way. Detection limits for chrysoidin and malachite green in aqueous solutions reached0.001 mg/L and 0.0001 mg/L respectively. Linear relationship between the Raman intensities and chrysoidin concentrations in range of 0.001-0.05 mg/L was found with regression coefficient（R） of 0.994.To investigate the practical application performance of the method, the substrate was applied to detect chrysoidin in Sprite at 0.01 mg/L and malachite green in fish pond water at 0.0001 mg/L. The SERS method could be an alternative approach for monitoring illegal additives and toxic harmful substances.展开更多
From the perspective of social semiotics,gender terms are important signs for meaning making in society,in that they not only reflect social norms regarding different genders,but also play an important role in the for...From the perspective of social semiotics,gender terms are important signs for meaning making in society,in that they not only reflect social norms regarding different genders,but also play an important role in the formation of a range of other equally important semiotic notions.This article studies the gender ideology as reflected in the definitions of a number of headwords in the 7th edition of Contemporary Chinese Dictionary(CCD7).The analyses reveal that CCD7’s definitions serve to construct gender and marriage norms in accordance with the prevalent gender ideology of the society.Based on a binary view of gender,CCD7 constructs a normal-abnormal continuum,which defines heterosexual relationships and heterosexual marriages as the social norms.This study regards the act of defining as a social semiotic process under the influence of the prevailing ideology,and reaffirms the status of gender terms as a significant shaping force in social semiotics.展开更多
基金supported by Science and Technology Commission of Shanghai Municipality (No.17142202600)
文摘This paper reports accurate use of silanized support based substrate for surface-enhanced Raman spectroscopy（SERS） determination of illegal additives chrysoidin and malachite green. Detection of these illegal additives is very meaningful and the developed method meets this objective in a simple, rapid and cost effective way. Detection limits for chrysoidin and malachite green in aqueous solutions reached0.001 mg/L and 0.0001 mg/L respectively. Linear relationship between the Raman intensities and chrysoidin concentrations in range of 0.001-0.05 mg/L was found with regression coefficient（R） of 0.994.To investigate the practical application performance of the method, the substrate was applied to detect chrysoidin in Sprite at 0.01 mg/L and malachite green in fish pond water at 0.0001 mg/L. The SERS method could be an alternative approach for monitoring illegal additives and toxic harmful substances.
文摘From the perspective of social semiotics,gender terms are important signs for meaning making in society,in that they not only reflect social norms regarding different genders,but also play an important role in the formation of a range of other equally important semiotic notions.This article studies the gender ideology as reflected in the definitions of a number of headwords in the 7th edition of Contemporary Chinese Dictionary(CCD7).The analyses reveal that CCD7’s definitions serve to construct gender and marriage norms in accordance with the prevalent gender ideology of the society.Based on a binary view of gender,CCD7 constructs a normal-abnormal continuum,which defines heterosexual relationships and heterosexual marriages as the social norms.This study regards the act of defining as a social semiotic process under the influence of the prevailing ideology,and reaffirms the status of gender terms as a significant shaping force in social semiotics.
