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一种合成粉色蛋白石的谱学特征及颜色成因探讨
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作者 吴金林 马泓 黎辉煌 《宝石和宝石学杂志(中英文)》 CAS 2023年第2期42-49,共8页
采用超景深显微镜、傅里叶变换红外光谱(FTIR)、激光拉曼光谱(Raman)、紫外-可见吸收光谱(UV-Vis)、激光诱导击穿光谱(LIBS)和X射线荧光光谱(EDXRF)等测试技术,对一种合成粉色蛋白石样品的宝石学特征、谱学特征及颜色成因予以探讨。结... 采用超景深显微镜、傅里叶变换红外光谱(FTIR)、激光拉曼光谱(Raman)、紫外-可见吸收光谱(UV-Vis)、激光诱导击穿光谱(LIBS)和X射线荧光光谱(EDXRF)等测试技术,对一种合成粉色蛋白石样品的宝石学特征、谱学特征及颜色成因予以探讨。结果表明,该类合成蛋白石的外观呈粉色,玻璃光泽,透明,无变彩,折射率1.41~1.42,密度2.16~2.20 g/cm3,放大观察内部可见不同红色调的球状、椭球状的微纳米级固相包裹体。根据红外光谱和拉曼光谱特征,该类合成粉色蛋白石的类型应介于Opal-A型与Opal-CT型之间,且与Opal-A型蛋白石较为接近;红外透射光谱显示7 224、4 523、3 674、2 662、2 266 cm-1附近的一组特征红外吸收谱峰,与俄罗斯人工蛋白石较为吻合。该类样品的SiO2含量达97.581%~98.352%,此外分别含有0.287%~0.497%的Na2O,0.112%~0.326%的MgO,0.895%~1.507%的Al2O3,0.011%~0.026%的K2O,0.003%~0.015%的CaO以及0.079%~0.244%的Cu2O,其颜色是由铜的氧化物(主要为Cu2O)等矿物颗粒细微分散所致,并在可见光范围内产生570 nm附近的特征吸收峰。 展开更多
关键词 合成蛋白石 宝石学特征 谱学特征 颜色成因
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RESPONSES TO ETHYLENE AND PROTEIN SYNTHESIS OF CARNATION FLOWERS 被引量:4
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作者 姜微波 Shimon Mayak Abraham H.Halevy 《Acta Botanica Sinica》 CSCD 1997年第11期991-997,共7页
The symptoms of petal response to ethylene, including petal in-rolling and increase in ion leakage through cell membrane, were completely inhibited by treatment of transcription inhibitor a-amanitin as well as protein... The symptoms of petal response to ethylene, including petal in-rolling and increase in ion leakage through cell membrane, were completely inhibited by treatment of transcription inhibitor a-amanitin as well as protein synthesis inhibitor--cycloheximide. It was observed in Dianthus caryophyllus L. cv. White Sim that protein synthesis in flowers declined and the responsiveness to ethylene increased as the flowers became matured. However, when the flowers were pre-treated with aminooxyacetic acid (AOA), an inhibitor of ethylene synthesis, the observed responsiveness to ethylene in flowers declined with age. These results suggested that responsiveness to ethylene in flowers may be due to a declination in the capacity of protein synthesis in flowers. 展开更多
关键词 CARNATION ETHYLENE Protein synthesis a-amanitin CYCLOHEXIMIDE
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