Ultrasonic relaxation studies of the exchange process between surface active agent ions, small molecules and mixed micelles

1977 ◽  
Vol 73 (7) ◽  
pp. 1582 ◽  
Author(s):  
Denver Hall ◽  
Paul L. Jobling ◽  
Evan Wyn-Jones ◽  
Jorgen E. Rassing
Keyword(s):  
Small Molecules ◽  
Mixed Micelles ◽  
Surface Active Agent ◽  
Exchange Process ◽  
Active Agent ◽  
Surface Active ◽  
Ultrasonic Relaxation ◽  
Relaxation Studies

Permeability changes in the egg-shell of hookworms during development and eclosion

Parasitology ◽  
1986 ◽  
Vol 93 (3) ◽  
pp. 547-557 ◽  
Author(s):  
B. E. Matthews
Keyword(s):  
Small Molecules ◽  
Marked Decrease ◽  
Surface Active Agent ◽  
Active Agent ◽  
Time Lapse ◽  
Ancylostoma Ceylanicum ◽  
Permeability Changes ◽  
Surface Active ◽  
Egg Shell ◽  
Time Lapse Video

SUMMARYThe development and hatching of Ancylostoma ceylanicum and Ancylostoma tubaeforme eggs in a range of potentially inimical solutions has been examined using time-lapse video micro-recording techniques. In all compounds tested the larvae developed to the active pretzel stage. The inception of activity resulted in an increase in shell permeability to water and small molecules. In anthelmintics of molecular weight (Mr) 400 development continued normally until about the time that control eggs hatched, when there was a marked decrease in larval activity and eclosion did not occur. The addition of a low Mr surface-active agent potentiated the effect of the anthelmintic and caused larval activity to be lost earlier. The calcium inhibitor lanthanum chloride affected larval development rather than eclosion. Large Mr compounds did not affect either development or hatching and the results suggest that the egg-shell may act as a form of sieve, allowing the essential oxygen to reach the developing larva while excluding large potentially dangerous molecules. No appreciable differences were found between the two species of hookworm examined.

Adjunctive Use of a Surface-Active Agent in Extracorporeal Circulation

Circulation ◽  
1966 ◽  
Vol 33 (4s1) ◽  
Author(s):  
YOSHIMASA MIYAUCHI ◽  
TAKAYUKI INOUE ◽  
BRUCE C. PATON
Keyword(s):  
Extracorporeal Circulation ◽  
Surface Active Agent ◽  
Active Agent ◽  
Surface Active

Surface Active Agent Phenomena in Dust Abatement

1952 ◽  
Vol 44 (10) ◽  
pp. 2389-2393 ◽  
Author(s):  
P. L. Walker ◽  
E. E. Petersen ◽  
C. C. Wright
Keyword(s):  
Surface Active Agent ◽  
Active Agent ◽  
Surface Active

scholarly journals Study on Antimicrobial Surface Active Agent. III.

1975 ◽  
Vol 24 (2) ◽  
pp. 116-120
Author(s):  
Tsuyoshi UCHIBORI ◽  
Masatoshi TAKAHASHI ◽  
Ichiro YAMAMOTO ◽  
Shoichiro WATANABE
Keyword(s):  
Surface Active Agent ◽  
Active Agent ◽  
Surface Active
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