Light Scattering and Electrical Conductivity Studies of the Aerosol OT Toluene Water−In−Oil Microemulsions

2001 ◽  
Vol 105 (42) ◽  
pp. 10163-10168 ◽  
Author(s):  
M. Mercedes Velázquez ◽  
Margarita Valero ◽  
Francisco Ortega
2021 ◽  
Vol 2119 (1) ◽  
pp. 012117
Author(s):  
V Ya Rudyak ◽  
G R Dashapilov ◽  
A A Shupik

Abstract This article is devoted to the study of the thermophysical properties of nanofluids with single-walled and multi-walled carbon nanotubes (CNT). Their weight concentration varied from 0.05 to 0.2%. Nanofluids, based on ethylene glycol and water, were studied. Dispersants were also used. The diffusion of CNT had been systematically investigated by the method of dynamic light scattering and their effective hydrodynamic dimensions were determined. The rheology and viscosity of all nanofluids were studied. It is shown that nanofluids are either pseu-doplastic or viscoplastic. Their rheology changes with increasing CNT concentration and temperature. However, in all cases, the viscosity of nanofluids with single-walled CNTs is signifi-cantly higher than that of nanofluids with multi-walled CNTs. In the last part, the electrical conductivity of all these nanofluids and the dispersants effect on it are investigated.


1977 ◽  
Vol 59 (2) ◽  
pp. 360-370 ◽  
Author(s):  
Ingemar Lundström ◽  
Krister Fontell

2019 ◽  
Vol 485 (6) ◽  
pp. 760-763 ◽  
Author(s):  
V. S. Sibirtsev ◽  
M. V. Uspenskaya ◽  
A. V. Garabadgiu ◽  
V. I. Shvets

A microbiotesting technique is described, which involves recording changes in pH, redox potential, electrical conductivity, optical density, light scattering and luminescence intensities, as well as other parameters of samples with viable test microorganisms, incubated in a liquid nutrient medium in the presence and in the absence of tested factors. The results of the analysis using this system of pro- and antibiotic activity of various oil products, as well as weak electromagnetic fields of the megahertz range are presented. It is shown that the proposed method, in comparison with standard methods, allows to obtain more detailed and objective information, and also requires less time and labor.


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