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Water-soluble cadmium telluride(CdTe) nanocrystals were synthesized in aqueous solution with thioglycolic acid(TGA) molecules as a stabilizer.A series of TGA-stabilized CdTe nanocrystals were prepared using sodium tellurite as a tellurium source,which avoids the cumbersome processes associated with H_2Te or NaHTe sources.The synthesized TGA-stabilized CdTe were characterized with X-ray diffraction,TEM and fluorescence spectrophotometer.The particles crystallized predominantly in cubic phase with narrow p... 相似文献
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针对公园绿地绿色空间评价采用二维指标的不足,该文以三维指标绿容积率(GPR)为切入点,以武汉市主城区公园绿地为对象,在遥感和地理信息系统的支持下,建立绿容积率和归一化植被指数(NDVI)的回归模型,反演得到武汉市主城区公园绿地绿容积率分布图。通过分析不同类型公园绿容积率分布特征和分级规律,定量反映公园功能和内部群落结构的差异,使绿容积率能成为今后公园绿地规划和建设的重要指标。 相似文献
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