نتایج جستجو برای: سورفکتنات aot
تعداد نتایج: 821 فیلتر نتایج به سال:
The electron transfer process between pentammineaquacobalt (III) and hexacyanoferrate (II), [Co(NH3)5H2O]3+/Fe(CN)6]4− ion pair was investigated in water/dioctyl sodium sulfosuccinate (AOT)/Isooctane reverse micelles. study observed that the rate depends on size of concentrations Fe (II) ions were varied different-sized (Wo) micelles Wo = [H2O]/[AOT] 10 to 30, but concentration Co kept constant...
INTRODUCTION Adenomatoid odontogenic tumor (AOT) is a benign lesion originating from the dental lamina or its remnants. It is a relatively uncommon neoplasm representing about 3% of all odontogenic tumors. The aim of this study was to examine the clinical and radiological characteristics of AOTs in five major tertiary centres in Nigeria. METHODS Archival hospital-based data stores of five ter...
The oxidation of beta-D-glucose by the enzyme glucose oxidase was studied in aqueous medium, in solutions of surfactants AOT (2-ethylhexylsulfosuccinate, sodium salt) TX-100 (polyethylene glycol p-tert octyl phenyl ether) and in w/o microemulsion medium (water/AOT/decane) at different water/AOT mole ratio (omega), pH, temperature and in presence of additives. The time-dependent activities of th...
One of the objectives of the ENVISAT project AO-164 on “Environmental Research in the Eastern Alps” is the development of algorithms for retrieval of water quality parameters of lakes from MERIS data. In order to test and validate atmospheric correction algorithms and to provide basic data for the development of algorithms for retrieval of limnological parameters and aerosol loadings, several f...
The properties of confined water and diffusive proton-transfer kinetics in the nanoscopic water channels of Nafion fuel cell membranes at various hydration levels are compared to water in a series of well-characterized AOT reverse micelles with known water nanopool sizes using the photoacid pyranine as a molecular probe. The side chains of Nafion are terminated by sulfonate groups with sodium c...
The apparent solubilization of water in hydrocarbon solvents by the addition of 0.1% to 2.0% w/w di-(2-ethylhexyl) sodium sulfosuccinate (AOT) has been studied. In n-octane and n-decane, transitions of clear-turbid-clear-turbid were observed with increasing water content, whereas in dodecane, tetradecane, hexadecane, cyclohexane, and toluene only one clear-turbid transition was seen. Separation...
Problem: Surgical departments account for sizable budgets in hospitals. To ensure efficiency, optimal processes need to be maintained. The current practice for posting a surgical case is using surgeon estimated times (SETs), which only includes the reporting points of component 2 (C2) “incision” to “dressing.” Objective: To analyze if there was a significant difference in minutes between actual...
The respiratory mechanics of artificially ventilated chronic obstructive pulmonary disease (COPD) patients were investigated by means of the forced oscillation (FOT) and the end-inspiratory airway occlusion (AOT) techniques. FOT was applied to measure respiratory resistance (Rrs) and reactance (Xrs) from 0.25-16 Hz. Maximum (Rmax) and minimum (Rmin) resistances, static elastance (Est) and time ...
We use monthly data of aerosol optical thickness (AOT) from the Moderate Resolution Imaging Spectroradiometer (MODIS) on board the 7 NASA Terra and Aqua satellites for the ten-year period (2001 -2010) in order to determine seasonal variations of Saharan dust transport over the Mediterranean towards Europe. The maxima of AOT are used to visualize the transport paths. Saharan dust reaches Europe ...
Aqueous and nonaqueous AOT/n-heptane reverse micelles where characterized by UV-Visible and fluorescence spectroscopy of AO. The study shows the presence of the dimer in aqueous reverse micelles which is not present in the nonaqueous systems. It seems that there is a conversion of the dimer to monomer in the aqueous reverse micelles at high AOT concentration. In the nonaqueous systems, there is...
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