采集浙江舟山秀山的滩涂海泥,通过水浸提、过滤、离心沉降处理制备水溶体系,采用BCS-Trolox法测定体系的总抗氧化性能,采用酪氨酸酶法评价体系的美白功效,研究了制备水溶体系时温度、pH、时间和转速对体系的抗氧化性能和美白功效的影响...采集浙江舟山秀山的滩涂海泥,通过水浸提、过滤、离心沉降处理制备水溶体系,采用BCS-Trolox法测定体系的总抗氧化性能,采用酪氨酸酶法评价体系的美白功效,研究了制备水溶体系时温度、pH、时间和转速对体系的抗氧化性能和美白功效的影响。结果表明,温度对海泥水溶体系的抗氧化性能有显著影响,pH和提取时间对抗氧化性能的影响不显著,优化抗氧化性能的水溶体系制备条件为:温度75℃,pH=5,时间10 m in;温度和提取时间对海泥水溶体系的美白功效有显著影响,pH对美白功效的影响不显著,优化美白功效的水溶体系制备条件为:温度35℃,pH=6,时间30 m in。展开更多
The energy-saving management of China's cement industry has gradually improved in recent years; however, cement industry still faces big pressure of facilitating energy conservation and emission reduction. Based o...The energy-saving management of China's cement industry has gradually improved in recent years; however, cement industry still faces big pressure of facilitating energy conservation and emission reduction. Based on the current development of cement industry, the paper summarizes and analyzes the application and promotion of energy management system(EnMS) standardization in cement industry, then gives a brief introduction to the implementation of related standards and at last explores the positive function of energy management system in enhancing enterprises' energy management and improving energy performance.展开更多
The changes of free solution amount, fluidity and the time-depended fluidity loss of cement paste were examined by varying the water-cement ratio and the dosages of superplasticizer. The distribution of solution and f...The changes of free solution amount, fluidity and the time-depended fluidity loss of cement paste were examined by varying the water-cement ratio and the dosages of superplasticizer. The distribution of solution and flocculation microstructure in flesh cement paste was observed with optical microscope. The change of free solution amount and its effect on the fluidity and bleeding of cement paste was studied. The results show that the adsorbed solution amount has a great influence on the com- patibility of cement-superplasticizer system, including the bleeding degree, the fluidity and the time-depended fluidity loss of cement paste. Superplasticizer increases the fluidity of cement paste by destroying the flocculated cement particle structure and increasing the amount of adsorbed solution. Polycarboxylate superplasticizer shows higher ability of adsorption than naphtha- lene superplasticizer. Over dosage of superplasticizer is not the primary cause of bleeding. The principle reason of bleeding is the high water-cement ratio and the insufficient enhancing ability of water adsorption of superplasticizer.展开更多
文摘采集浙江舟山秀山的滩涂海泥,通过水浸提、过滤、离心沉降处理制备水溶体系,采用BCS-Trolox法测定体系的总抗氧化性能,采用酪氨酸酶法评价体系的美白功效,研究了制备水溶体系时温度、pH、时间和转速对体系的抗氧化性能和美白功效的影响。结果表明,温度对海泥水溶体系的抗氧化性能有显著影响,pH和提取时间对抗氧化性能的影响不显著,优化抗氧化性能的水溶体系制备条件为:温度75℃,pH=5,时间10 m in;温度和提取时间对海泥水溶体系的美白功效有显著影响,pH对美白功效的影响不显著,优化美白功效的水溶体系制备条件为:温度35℃,pH=6,时间30 m in。
文摘The energy-saving management of China's cement industry has gradually improved in recent years; however, cement industry still faces big pressure of facilitating energy conservation and emission reduction. Based on the current development of cement industry, the paper summarizes and analyzes the application and promotion of energy management system(EnMS) standardization in cement industry, then gives a brief introduction to the implementation of related standards and at last explores the positive function of energy management system in enhancing enterprises' energy management and improving energy performance.
基金supported by the National Natural Science Foundation of China (Grant No.50772053)
文摘The changes of free solution amount, fluidity and the time-depended fluidity loss of cement paste were examined by varying the water-cement ratio and the dosages of superplasticizer. The distribution of solution and flocculation microstructure in flesh cement paste was observed with optical microscope. The change of free solution amount and its effect on the fluidity and bleeding of cement paste was studied. The results show that the adsorbed solution amount has a great influence on the com- patibility of cement-superplasticizer system, including the bleeding degree, the fluidity and the time-depended fluidity loss of cement paste. Superplasticizer increases the fluidity of cement paste by destroying the flocculated cement particle structure and increasing the amount of adsorbed solution. Polycarboxylate superplasticizer shows higher ability of adsorption than naphtha- lene superplasticizer. Over dosage of superplasticizer is not the primary cause of bleeding. The principle reason of bleeding is the high water-cement ratio and the insufficient enhancing ability of water adsorption of superplasticizer.
