Results 11 to 20 of about 481,754 (255)
Hydroxamic acid surface active agents
p-Hydroxy phenyloctadecanol and p-hydroxy phenyloctadecanoic acid were used as new precursors for the preparation of surface active hydroxamic acid including different moles of propylene oxide.
M. H.M. Ahmed +2 more
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Synthesis of Surface Active Agents. VI.
The surface activity of the α-substituted higher aliphatic acids was studied. These compounds were prepared by reaction of α-bromo-fatty acid with various compounds, such as sodium hydroxide, N-methyltaurine, monoethanolamine, diethanolamine, glycine, n-butylamine, ethylenediamine, potassium cyanide (The obtained α-cyano-fatty acid was hydrolyzed into ...
Mikio KAWATA, Ryohei ODA, Yoshihiko ITO
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Objective: The aim of this in vitro study was to evaluate the effect of addition of various surface-modifying agents to EDTA solution on the bond strength of an epoxy-based sealer to the root canal dentin. Materials and Method: Sixty single-rooted human
Mehmet Burak Güneşer +3 more
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Hemolysis by Nonionic Surface-active Agents
The hemolytic actions of polyoxyethylene glycol monododecyl ethers, C12H25-(C2H4O)nOH, have been studied. The amount required of these agents to produce lysis was found to be linearly related to the red cell concentration within experimental error. This was interpreted as showing the significant role of the adsorption of nonionic agent molecules onto ...
T, Kondo, M, Tomizawa
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The effect of surfactants on electrochemical hydrogen production [PDF]
One of the problems of اydrogen production by the electrochemical method is forming and remaining of hydrogen bubbles on the surface of the electrode, which leads to considerable reduction in efficiency of hydrogen generation. The aim of this study is to
Ali Ghaffarinead +3 more
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Synthesis and surface active properties of cationic surface active agents from crude rice bran oil
Cationic surfactants of 2-hidroxy-3-(2- alkylamidopolyethyl amino) propane-1-triethylammonium hydroxides (ix-xui)a-d were prepared from fatty acids (i)a-d [palmitic, stearic, oleic, linoleic acid] and mixed fatty acids of crude rice bran oil ie [RBO ...
W. I. A. El-Dougdoug
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The study of excipients’ influence on Clopidogrel releasing from the rectal suppositories
Such cardiovascular pathologies as ischemic disease of heart and brain, occlusive diseases of peripheral arteries are the most frequent causes of morbidity, mortality and disability of population in the world.
Ye. А. Redkina +3 more
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Dynamic behavior of molten pool flow field for active laser welded-thick stainless steel plates
By combining numerical simulation and experimental investigation, this paper intensively investigated the influence rules of adding three active agents (SiO _2 , TiO _2 and NaF) on the dynamic behaviors of flow field in the laser welding 304 stainless ...
L-F Mei +5 more
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Intensifying the cement grinding process [PDF]
This article deals with the intensification of the grinding process in ball mills. Attention is drawn to the need to reduce the energy input for grinding.
Mukhamedbaeva Mas’uda +2 more
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PREPARATION OF SOME SURFACE ACTIVE AGENTS AND DETERMINATION OF ITS PHYSICO CHEMICAL PROPERTIES [PDF]
Two type of surface active agents anionic and nonionic were prepared from locally raw materials: Fatty acids (Iauric and palmitic) reacted with poly ethylene glycol (PEG) 400.
A. Khattab +3 more
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