The percentages of three mian active components of pulmonary surfactant were markedly higher during early ARDS. Phosphatidylcholine,phosphatidylglycerol and diphosphatidylglycerol reached to 56 0%±2 8%,9 2%±1 5% and 2 9%±0 7% respectively.
In the water sample to be determined, cations can be complexly masked with EDTA, anions such as S~(-2), I~-, S_2O_3~(2-), and some organic reducers and surfactant can all be removed with KMnO_4 by oxidation.
Results The contents of pulmonary surfactant decreased with the development of ARDS. They were 67 6±7 2,44 0±7 3 and 31 3±6 5μg/ml lung lavage in control group,early group and late group respectively.
To investigate the effect of pulmonary surfactant(PS) on the expression rates of Th1, Th2, Tc1, Tc2 subsets of patients during an acute asthmatic attack.
The optimal constituents of microemulsion were found from pseudoternary phase diagrams: the mass ratio of Span80 to PS was 4:1 and complex surfactant to cosurfactant was 1:1.
Synthesis and surface-active property of bis-quaternary ammonium-sodium sulfate Gemini surfactant
N,N-dimethyldodecylamine, hydrochloride and epichlorohydrin (molar ration is 2:1:1) were used to synthesize bis-quaternary ammonium Gemini surfactant with a hydroxyl in its spacer group by the one-pot method.
This hydroxyl was sulfonated by chlorosulfonic acid and then neutralized to bis-quaternary ammonium-sodium sulfate zwitterionic Gemini surfactant.
The critical micelle concentration (cmc) and surface tension of the novel zwitterionic Gemini surfactant in aqueous solution at 15°C are 7.2×10-5 mol/L and 34.5 mN/m, respectively.
Although the surface adsorption of ionic surfactants had been widely studied, the investigations were almost limited to solutions containing only a single surfactant. In the present investigation surface tension of the mixed solutions containing a cationic and an anionic surfactant namely, dodecylpyridinium bromide and sodium dodecylsulfate, has been measured by the drop-volume method, and the individual adsorption of each surface-active ion calculated by the following equations:
This paper deals with a new method of preparing rosin chloride directly with chlorine, which is different from the traditional method as shown in relevant materials. The chlorinated rosin soap lye thus made can be used as surfactant and lubricant in place of chlorinated paraffinum, as it is characterized by its properties of better condensation and antifrication.
A simple photo-galvano-voltaic cell has been constructed by using a Nesa glass coated with SnO2 on both sides as transparent electrodes, one of which is further coated with a photosensitizing dyestuff, meso-tetraphenylporphrin (TPP), forming the photo-cathode, and using an aqueous solution of thionine and Fe+++/Fe++redox couple as the electrolytic solution. By adding a surfactant, Na Lauryl sulfate, into the solution the. surface resistance of the TPP film is greatly lowered, so that the photocurrent of...
A simple photo-galvano-voltaic cell has been constructed by using a Nesa glass coated with SnO2 on both sides as transparent electrodes, one of which is further coated with a photosensitizing dyestuff, meso-tetraphenylporphrin (TPP), forming the photo-cathode, and using an aqueous solution of thionine and Fe+++/Fe++redox couple as the electrolytic solution. By adding a surfactant, Na Lauryl sulfate, into the solution the. surface resistance of the TPP film is greatly lowered, so that the photocurrent of the cell, is markedly enhanced, and the light conversion efficiency is increased more than twofold. It has been demonstrated that a multilayer liquid film photo-galvano-voltaic cell with film thickness less than 100μ cangreatly increase the light conversion efficiency, and the open-circuit voltage of more than two volts can be easily achieved. Several properties especially the semiconducting characters of the TPP coating material have been shown by analyzing the action spectrum, the Ⅰ-Ⅴ characteristic curve, and the photores-ponse light intensity dependency of this photo-galvano-voltaic cell.
surfactant
表面活性剂
查询“surfactant”译词为其他词的双语例句
查询“surfactant”译词为用户自定义的双语例句
相关查询
2008 CNKI－中国知网