With the application of new techniques, materials and technologies in West East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding u...With the application of new techniques, materials and technologies in West East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding up the development and improvement of the strength as a whole in aspects of smelting industry, pipe fabrication, pipeline construction and equipment manufacture,making China’s pipeline industry catch up with the trend of development of the world advanced level.展开更多
In today's world of sports competition is actually the competition of science and technology, and advanced materials are one of the important conditions for improving the level of sports science and technology. Using...In today's world of sports competition is actually the competition of science and technology, and advanced materials are one of the important conditions for improving the level of sports science and technology. Using the method of literature and logic method, analyzes the application of material technology in competitive sports in the. The results show that: the improvement of sports performance has a strong dependence on the new material; application of new materials in competitive sports, raise the level of competitive sports, promote the development of sports. It will further promote the sports equipment, venues and other scientific.展开更多
农药残留事关环境污染、食品安全等系列问题,而样品处理是整个分析检测过程中关键的一环,建立可靠安全的农药检测前处理技术则具有深远意义。QuEChERS(quick,easy,cheap,effective,rugged and safe)作为一种农药残留分析过程前处理方法...农药残留事关环境污染、食品安全等系列问题,而样品处理是整个分析检测过程中关键的一环,建立可靠安全的农药检测前处理技术则具有深远意义。QuEChERS(quick,easy,cheap,effective,rugged and safe)作为一种农药残留分析过程前处理方法,基于其快速、简单、廉价及高效的特点广泛应用于测试分析领域。本文基于6种常见的农药残留前处理技术对比分析的基础上,选取QuEChERS作为讨论对象,分析研究QuEChERS方法中涉及的提取剂、分析保护剂、净化剂等材料的选用及配比优化对提高前处理效能的影响,并综述以QuEChERS方法为手段联用不同色谱、质谱分析技术在农药残留检验方面的应用情况;针对QuEChERS技术在实际应用过程中所面临的困扰,进一步探讨新型净化材料在改进QuEChERS方法方面的开发前景,以期为拓展该前处理技术提供进一步的技术参考。展开更多
文摘With the application of new techniques, materials and technologies in West East Gas Transportation Pipeline (WEGTP) project, the design concept of domestic pipeline industrial construction has been updated, speeding up the development and improvement of the strength as a whole in aspects of smelting industry, pipe fabrication, pipeline construction and equipment manufacture,making China’s pipeline industry catch up with the trend of development of the world advanced level.
文摘In today's world of sports competition is actually the competition of science and technology, and advanced materials are one of the important conditions for improving the level of sports science and technology. Using the method of literature and logic method, analyzes the application of material technology in competitive sports in the. The results show that: the improvement of sports performance has a strong dependence on the new material; application of new materials in competitive sports, raise the level of competitive sports, promote the development of sports. It will further promote the sports equipment, venues and other scientific.
文摘农药残留事关环境污染、食品安全等系列问题,而样品处理是整个分析检测过程中关键的一环,建立可靠安全的农药检测前处理技术则具有深远意义。QuEChERS(quick,easy,cheap,effective,rugged and safe)作为一种农药残留分析过程前处理方法,基于其快速、简单、廉价及高效的特点广泛应用于测试分析领域。本文基于6种常见的农药残留前处理技术对比分析的基础上,选取QuEChERS作为讨论对象,分析研究QuEChERS方法中涉及的提取剂、分析保护剂、净化剂等材料的选用及配比优化对提高前处理效能的影响,并综述以QuEChERS方法为手段联用不同色谱、质谱分析技术在农药残留检验方面的应用情况;针对QuEChERS技术在实际应用过程中所面临的困扰,进一步探讨新型净化材料在改进QuEChERS方法方面的开发前景,以期为拓展该前处理技术提供进一步的技术参考。