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Min, Li
- The Microenvironment Properties of the Mixed Micelle of SPFO and CTAB
Abstract Views :183 |
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Authors
Yong-Xi Zheng
1,
Li Min
1
Affiliations
1 Department of Chemistry, Tsinghua University, Beijing 100084, CN
1 Department of Chemistry, Tsinghua University, Beijing 100084, CN
Source
Journal of Surface Science and Technology, Vol 7, No 1 (1991), Pagination: 81-91Abstract
The properties of the SPFO-CTAB mixed micelle microenvironment were studied by use of fluorescence probe, ESM and NMR techniques. The DPH(1,6-diphenyl-1, 3.5-hexatriene) fluorescence probe reveals a low dielectric constant in the SPFO-CTAB micellar core, and the degree of its polarization increased in SPFO-CTAB mixed micelle, referring a high microviscosity to the micellar core. Using 5NS (5-DOXYL-stearic acid) labelled technique. ESR spectroscopy also reveals the increase of microviscosity of the mixed micelle. It was shown by 1H NMR and 19F NMR experiments that SPFO and CTAB formed mixed micelles and the fluorocarbon chain of SPFO had a strong interaction on the hydrocarban chain of CTAB, which suggested that a number of SPFO flurocarbon chains might penetrate the interior of CTAB micelle.Keywords
Microenvironment Properties, Mixed Micelle, Sodium Perfluoroctylate, CTAB, Fluorescence Probe, ESR, NMR.
- Parameters Optimization and Simulation of Highway Tunnel Offset-of-vault Lamp Distribution Lighting with LED
Abstract Views :100 |
PDF Views:0
Authors
Affiliations
1 School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, CN
2 School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, IN
1 School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, CN
2 School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang, IN
Source
Indian Journal of Power and River Valley Development, Vol 72, No 9&10 (2022), Pagination: 167-172Abstract
Optimizing lamp installation parameters (LIPs) can save energy of tunnel lighting system, but a few studies are available in this respect. The parameters optimization model (POM) of offset-of-vault lamp distribution (OLD) lighting system for tunnel interior zone was established to acquire the most energy-saving LIPs. Yanlieshan tunnel was taken as an example for the optimization, the optimial LIPs of the OLD lighting system of the tunnel interior zone were obtained by the POM. A comparison between the optimization results and that of Yanlieshan tunnel’s actual lighting system was performed, which showed that the optimized OLD lighting system with LED lamps installed according to the optimized LIPs could save energy remarkably even under full-capacity lighting condition. Illuminance and illuminance uniformity of the tunnel road surface still met lighting demands even the LED lamps’ luminance decreased by 30%. An OLD lighting simulation experiment with the optimized OLD LIPs for Yanlieshan tunnel was accomplished in the software Dialux, the simulation results basically agreed with the optimization calculated results from the POM, which proved the correctness of the OLD POM.Keywords
Tunnel Lighting, Parameters Optimization, Offset-of-vault Lamp Distribution, Energy-savingReferences
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