2000 years ago, Silk Road was considered the concernful channel of trade promotion that connects China and the world, stretching thousands of miles running through the desert. At that time, groups of Chinese traders c...2000 years ago, Silk Road was considered the concernful channel of trade promotion that connects China and the world, stretching thousands of miles running through the desert. At that time, groups of Chinese traders crossed this road with the help of camels at the risk oflosing their own life in the desert; venturing their trade in westerncountries. Nowadays, sands have covered this road and soundfrom camel bells has died out for a long time, but the pioneeringspirit of Chinese trade forerunners has been passed to us despitethe lapse of time. As a trade platform of China’s textile and apparelenterprises, the Sub-Council of Textile Industry, China Council forthe Promotion of International Trade (CCPIT TEX) was consideredas an intangible Silk Road that provides trade opportunitiesthrough organizing expo. and exhibitions.展开更多
A laboratory system was designed to generate bitumen fumes and expose tested samplers in a homogenised chamber. The system was also designed to condense the fumes in the form of oil that could be used as a standard fo...A laboratory system was designed to generate bitumen fumes and expose tested samplers in a homogenised chamber. The system was also designed to condense the fumes in the form of oil that could be used as a standard for further analytical method development. The laboratory system was evaluated in terms of stability, repeatability, aging, and ranges, focusing on the quality and quantity of the fumes and their physical characteristics. The fumes generated with the laboratory system were also compared to fumes emitted at workplaces to evaluate their similarity. The results demonstrated that laboratory fume generation was stable and repeatable. Humidity ranged from 20% to 80% RH and the total fume concentration ranged from 0.01 to 9.36 mg.m<sup>-3</sup>, covering the conditions encountered for road paving worksites. The fumes generated in the laboratory were found to be similar to those of workplaces, with slight differences in light compounds equivalent to C12 and below n-alkanes. Thus, the system designed in this study is considered capable of generating bitumen fumes used to develop sampling and analysis methods.展开更多
文摘2000 years ago, Silk Road was considered the concernful channel of trade promotion that connects China and the world, stretching thousands of miles running through the desert. At that time, groups of Chinese traders crossed this road with the help of camels at the risk oflosing their own life in the desert; venturing their trade in westerncountries. Nowadays, sands have covered this road and soundfrom camel bells has died out for a long time, but the pioneeringspirit of Chinese trade forerunners has been passed to us despitethe lapse of time. As a trade platform of China’s textile and apparelenterprises, the Sub-Council of Textile Industry, China Council forthe Promotion of International Trade (CCPIT TEX) was consideredas an intangible Silk Road that provides trade opportunitiesthrough organizing expo. and exhibitions.
文摘A laboratory system was designed to generate bitumen fumes and expose tested samplers in a homogenised chamber. The system was also designed to condense the fumes in the form of oil that could be used as a standard for further analytical method development. The laboratory system was evaluated in terms of stability, repeatability, aging, and ranges, focusing on the quality and quantity of the fumes and their physical characteristics. The fumes generated with the laboratory system were also compared to fumes emitted at workplaces to evaluate their similarity. The results demonstrated that laboratory fume generation was stable and repeatable. Humidity ranged from 20% to 80% RH and the total fume concentration ranged from 0.01 to 9.36 mg.m<sup>-3</sup>, covering the conditions encountered for road paving worksites. The fumes generated in the laboratory were found to be similar to those of workplaces, with slight differences in light compounds equivalent to C12 and below n-alkanes. Thus, the system designed in this study is considered capable of generating bitumen fumes used to develop sampling and analysis methods.
