铁路行业知识产权保护与管理分析研究

国外铁路在知识产权管理方面积累了一定的经验,我国铁路知识产权保护工作起步较晚,还存在一些问题,应加快知识产权人才队伍建设、加快预警机制和应急机制建设,大力培育和开发CRH品牌,提升铁路形象,通过技术创新,构建具有自主知识产权且核心竞争力强的保护体系,提高我国铁路国际竞争力。

铁路科技统计指标体系研究

分析铁路科技统计现状及特点,研究建立由4个一级指标、8个二级指标及16个三级指标组成的铁路科技统计指标体系,并对指标的作用及涵义进行分析说明,提出加强数据指标的前瞻性研究、强化统计分析功能、保证指标体系的相对稳定性和铁路科技统计工作责任落实的建议。

Preliminary study of an open-air water-contacting discharge for direct nitrogen fixation

Efficient nitrogen fixation through a reactive plasma process attracts intense interest due to the environmental issues induced by the conventional Haber–Bosch method. In this work, we present a direct and simple fixation routine without any catalysts for nitrogen in open air using an atmospheric-pressure pin-to-solution plasma electrolytic system. Nitrate, nitrite, and ammonia as the nitrogen-derived chemicals in solution were analyzed as indicators under various discharge conditions to estimate the energy efficiency of this process. The results show that the nitrogen fixation process was much more efficient by the pin-positive discharge compared to the negative one. N chemicals preferred to be formed when the solution was of negative polarity. It was also found that, with the help of solution circulation, the energy efficiency was enhanced compared to that of static liquid. However, an inverse trend was observed with the increase of the discharge current. Further study by optical emission spectroscopy indicates the important roles of active N2* and water vapour and their derived species near the plasma–water interface in the fixation process.

工程项目EPC总承包模式下建筑经济的管理与发展路径

随着我国经济的不断发展,在建筑行业中,EPC总承包模式也得到了广泛应用。EPC总承包模式是当前工程项目中普遍使用的一种设计采购施工管理模式,这种模式的应用在很大程度上提高了工程项目建设的质量与效率,为EPC总承包模式在工程项目中的应用提供坚实的保障。本文对EPC总承包模式进行了深入的分析,并提出了工程项目EPC总承包模式下建筑经济的管理与发展路径,以供参考。