A fabric cationic softener was synthesised utilizing stearic acid(STA) and triethanolamine(TEA) as uncooked supplies.The effect of the amount of catalyst,reaction mole ratio,response temperature and time on the esterification was explored.The quaternarization response was also optimized utilizing dimethyl sulfate as quaternarization agent.The construction and properties of ester amine and last product have been characterized by Fourier transform infrared spectrometer(FTIR) and 1H nuclear magnetic rsonance spectroscopy(1H-NMR).The applying performances of the synthesized softener were additionally examined.Ultimately,the optimized conditions of ester amine were determined that the reaction temperature was 180 ℃,the mole ratio of STA and TEA was 1.8∶1,the catalyst p-toluenesulphonic acid content material was 0.15%,and the reaction time was 5 h.The most effective quaternarization response situations have been determined that the mole ratio of ester amine and dimethyl sulfate was 1∶0.9,drop time of dimethyl sulfate was 25 min,reaction temperature was eighty two ℃,and the response time was 5 h. Objective:To review the skeletal effects of orchidectomized(ORX) rats at ninety days after operation and particularly the modifications of concellous bone and cortical bone.Methods:Twenty four-month-outdated Sprague Dawley male rats had been randomly divided into two groups:sham surgery group(group A) and ORX group (group B).Ninety days after initiation of the experiment,all the rats had been killed and their lumbar vertebra and center tibial metaphysis have been processed to undecalcified sections for bone histomorphometry and measured by computerized picture analysis system.Results:Compared with sham group,ORX group had much less bone mass of lumbar vertebra with a better bone resorption and decrease bone formation charge(P0.05).The dynamic parameters of cortical bone resembling periosteal bone formation decreased(P0.05) whereas the endosteal bone turnover inclined to extend.Conclusion:Orchidectomy after 90 days may end in osteoporosis in male rats and the trabecular bone lack of lumbar vertebra is more obvious and delicate than cortical bone.
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