Entrainment of liquid films by vertically moving thin rods

1975 ◽  
Vol 28 (3) ◽  
pp. 461 ◽  
Author(s):  
SK Nicol ◽  
GR Wilson
Keyword(s):  
Film Thickness ◽  
Short Review ◽  
Liquid Films ◽  
Model Systems ◽  
Glycerol Solution ◽  
Film Drainage ◽  
Air Interface ◽  
Surface Active Agents ◽  
Surface Active ◽  
Effect Of Surface

When a thin rod is withdrawn vertically from a liquid bath a film of that liquid adheres to the rod. A short review of the theories describing this process is given. The application of these theories to three model systems using glycerol solution, kerosene and an oil as the coating liquids is discussed. The effect of surface active agents on the equilibrium film thickness is explained in terms of additional forces at the liquid-air interface impeding film drainage.

Effect of surface active agents on the production of biopesticides using wastewater sludge as a raw material

2001 ◽  
Vol 44 (10) ◽  
pp. 253-259 ◽  
Author(s):  
A.S. Vidyarthi ◽  
R.D. Tyagi ◽  
J.R. Valéro
Keyword(s):  
Bacillus Thuringiensis ◽  
Shake Flask ◽  
Spruce Budworm ◽  
Tween 80 ◽  
Wastewater Sludge ◽  
Raw Material ◽  
Viable Cells ◽  
Surface Active Agents ◽  
Surface Active ◽  
Effect Of Surface

Effect of surface active agents on the production of Bacillus thuringiensis based biopesticides using secondary wastewater sludge as a raw material was studied. The experiments were conducted in a shake flask and nine different commercial surface active agents were used at a concentration of 0.2% (v/v). The sludge samples after addition of surface active agents were sterilised at 121°C for 30 min. The progress of biopesticide production was monitored by measuring viable cells and viable spores counts. The entomotoxicity was determined through bioassay against 3rd instar larvae of spruce budworm. ATPLUS 522, Tween 80 and Tween 85 increased the entomotoxicity potential in comparison to the control. The highest increase of 24% in entomotoxicity was observed when sludge was fortified with Tween 80.

scholarly journals Effect of Surface Active Agents on Chick Growth

1952 ◽  
Vol 31 (4) ◽  
pp. 746-747 ◽  
Author(s):  
H.M. Scott ◽  
B.C. Johnson ◽  
E.A. Goffi
Keyword(s):  
Chick Growth ◽  
Surface Active Agents ◽  
Surface Active ◽  
Effect Of Surface
Sign in / Sign up

Export Citation Format

Share Document