排序方式: 共有2条查询结果,搜索用时 15 毫秒
1
1.
Talavera-Pech William A. Ávila-Ortega Alejandro Pacheco-Catalán Daniella Quintana-Owen Patricia Barrón-Zambrano Jesus A. 《SILICON》2019,11(3):1547-1555
Silicon - This study was undertaken to evaluate the adsorption of Reactive Black 5 dye (RB5), in aqueous solution, onto MCM-41 mesoporous silica nanoparticles (MSNs) functionalized with... 相似文献
2.
R. Medina-Esquivel Y. Freile-Pelegrin P. Quintana-Owen J. M. Yáñez-Limón J. J. Alvarado-Gil 《International Journal of Thermophysics》2008,29(6):2036-2045
Aqueous solutions of agar show a sol–gel transition temperature in the range from 32°C to 47°C depending on colloid concentration;
however, the width of the transition and the subsequent process occurring after it, are not well understood. In this work
the sol–gel transition of agar is studied by a simple optical method. It consists of the illumination of the sample using
a non-coherent light source and the monitoring of transmitted light using a photodiode. It is shown that during the sol–gel
transition, the transmitted light decays over a broad range of temperature. Simultaneously, it is possible to observe that
fluctuations in the transmitted light decrease along the sol–gel transition, and at a specific temperature, they become very
small. Based on these observations, the sol–gel transition temperature for three different concentrations of agar (0.5, 1.5,
and 2.5% w/v) is determined. These results are compared with the sol–gel transition temperature values provided by the conventional
rheological method. 相似文献
1