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Niloufar Norouzi,Majid Montazer,Ali Akbar Gharehaghaji 한국섬유공학회 2022 Fibers and polymers Vol.23 No.12
A combination of two significant requirements of low surface energy and roughness should be utilized to obtainthe lotus effect on polyester fabric. In this research, ZnO nano-particles were first in-situ synthesized on the polyester fabricusing zinc nitrate and NaOH to create nano-roughness as one requirement for producing a superhydrophobic surface. TheZnO pre-treated fabrics were then irradiated under sunlight for seven consecutive days to enhance the hydrophilicity. Theywere then treated with a fluorocarbon-based water repellent through the pad-dry-cure method to generate the surface with lowenergy. The produced fabric considered as a substrate manipulated the lotus topography. The superhydrophobic properties oftreated fabrics were investigated through contact and sliding angles, spray, and water drop tests. The surface morphology wasobserved under SEM, and the presence and distribution of Zn and F elements were proved by EDX and mapping pictures. The self-cleaning behaviors were examined by discoloration of Methylene Blue as a stain under daylight irradiation. Theinfluence of nano ZnO pre-treatment and then daylight irradiation was positively indicated on the fluoropolymer posttreatmentthat was provided a superhydrophobic fabric with sliding and contact angles of 8 and 157.3 °, respectively.
Inhibition of Human Hemoglobin Autoxidaiton by Sodium n-Dodecyl Sulphate
Reza, Dayer Mohammad,Ali Akbar, Moosavi-Movahedi,Parviz, Norouzi,Ghourchian, Ghourchian,Hedayat-Olah, Hedayat-Olah,Shahrokh, Safarian 생화학분자생물학회 2002 Journal of biochemistry and molecular biology Vol.35 No.4
The effect of sodium n-dodecyl sulphate (SDS) on hemoglobin autoxidation was studied in the presence of a 100mM phosphate buffer (pH 7.0) by different methods. These included spectorphotometry, fluorescence technique, cyclic voltametry, differential scanning calorimetry, and densitometry. Spectroscopic studies showed that SDS concentrations up to 1 mM increased deoxy-, decreases oxy-, and had no significant effect on the met- conformation of hemoglobin. Therefore, a SDS concentration up to 1 mM increased the deoxy form of hemoglobin as the folded, compact state and decreases the oxy conformation. The turbidity measurements and differential scanning calorimetry techniques indicated a more stable conformation for hemoglobin in the presence of SDS up to 1mM. Electrochemical studies also confirmed a more difficult oxidation under these conditions. The induction of the deoxy form in the presence of SDS was confirmed by densitometry techniques. The compact structure of deoxyhemoglobin blocks the formation of met-conformation in low SDS concentrations.
Inhibition of Human Hemoglobin Autoxidation by Sodium n - Dodecyl Sulphate
(Dayer Mohammad Reza),(Moosavi Movahedi Ali Akbar),(Norouzi Parviz),(Ghourchian),(Hedayat Olah),(Safarian Shahrokh) 생화학분자생물학회 2002 BMB Reports Vol.35 No.4
The effect of sodium n-dodecyl sulphate (SDS) on hemoglobin autoxidation was studied in the presence of a 100 mM phosphate buffer (pH 7.0) by different methods. These included spectrophotometry, fluorescence technique, cyclic voltametry, differential scanning calorimetry, and densitometry. Spectroscopic studies showed that SDS concentrations up to 1 mM increased deoxy-, decreases oxy-, and had no significant effect on the met- conformation of hemoglobin. Therefore, a SDS concentration up to 1 mM increased the deoxy form of hemoglobin as the folded, compact state and decreases the oxy conformation. The turbidity measurements and differential scanning calorimetry techniques indicated a more stable conformation for hemoglobin in the presence of SDS up to 1 mM. Electrochemical studies also confirmed a more difficult oxidation under these conditions. The induction of the deoxy form in the presence of SDS was confirmed by densitometry techniques. The compact structure of deoxyhemoglobin blocks the formation of met-conformation in low SDS concentrations.