利用等离子熔覆技术以石墨烯、C粉、Ti粉、Ni60A粉为原料在35CrMnSi钢基材表面原位合成复合涂层,应用SEM,XRD对涂层的微观组织和物相进行分析,并测试了涂层的显微硬度。结果表明:复合涂层与基体界面无气孔、无裂纹,呈冶金结合;复合涂层...利用等离子熔覆技术以石墨烯、C粉、Ti粉、Ni60A粉为原料在35CrMnSi钢基材表面原位合成复合涂层,应用SEM,XRD对涂层的微观组织和物相进行分析,并测试了涂层的显微硬度。结果表明:复合涂层与基体界面无气孔、无裂纹,呈冶金结合;复合涂层组织由TiC,γ-Ni和Cr 23 C 6组成。石墨烯的加入,使复合涂层的组织得到细化,而显微硬度也发生明显变化。3%石墨烯的复合涂层组织最细,接近等轴晶,颗粒密度最大,涂层的显微硬度达到HV 690。石墨烯的加入提高了复合涂层的性能。展开更多
The compost of cattle manure was inoculated with complex microbial agent lower than 5 ℃ to explore the application of beneficial microbial agent and maturation accelerator aiming at accelerating the process of compos...The compost of cattle manure was inoculated with complex microbial agent lower than 5 ℃ to explore the application of beneficial microbial agent and maturation accelerator aiming at accelerating the process of compostimg under the low temperature Results showed that adding the maturation accelerator accelerated the process of composting and increased the nitrogen content of composting products. Inoculating the microogannic maturation agent made the composting temperature rise quickly and the maW.ration become better.展开更多
Microbial inoculation agent has been widely used in waste disposal and waste recycling. In this paper, the principle of fermentation in the composting of agricultural waste and the impact of microbial inoculation agen...Microbial inoculation agent has been widely used in waste disposal and waste recycling. In this paper, the principle of fermentation in the composting of agricultural waste and the impact of microbial inoculation agent on composting were reviewed.The research and the application of microbial inoculation agent were also introduced. Based on the trend of the research, the promising prospect of microbial inoculation agent was discussed.展开更多
Hossein Nassaji&Eva Kartchava(eds.),2017.Corrective Feedback in Second Language Teaching and Learning.New York:Routledge.①引言纠正性反馈(corrective feedback,CF)是指"为提示学习者二语产出中不恰当用法所提供的...Hossein Nassaji&Eva Kartchava(eds.),2017.Corrective Feedback in Second Language Teaching and Learning.New York:Routledge.①引言纠正性反馈(corrective feedback,CF)是指"为提示学习者二语产出中不恰当用法所提供的反馈信息"(Chaudron,1988:150)。作为教师和学生互动的一种重要体现形式,纠正性反馈一直是二语习得领域的研究热点(Sheen&Ellis,2011)。近二十年,纠正性反馈研究取得了丰厚成果,为保持良性发展、持续繁荣的态势,交流和整合反馈研究显得尤为重要;另一方面,反馈研究与教学实践呈现脱节迹象,如何有效利用研究成果改进课堂教学,成为二语研究者和教师面临的重要挑战。展开更多
文摘利用等离子熔覆技术以石墨烯、C粉、Ti粉、Ni60A粉为原料在35CrMnSi钢基材表面原位合成复合涂层,应用SEM,XRD对涂层的微观组织和物相进行分析,并测试了涂层的显微硬度。结果表明:复合涂层与基体界面无气孔、无裂纹,呈冶金结合;复合涂层组织由TiC,γ-Ni和Cr 23 C 6组成。石墨烯的加入,使复合涂层的组织得到细化,而显微硬度也发生明显变化。3%石墨烯的复合涂层组织最细,接近等轴晶,颗粒密度最大,涂层的显微硬度达到HV 690。石墨烯的加入提高了复合涂层的性能。
基金Supported by Post-doctoral Management Office of Heilongjiang Province (LBH-Z06161)Key Lab of Utilization and Protection of BlackSoil (GXS08-1)Special-fund Project of Harbin Scientific Innovation Talented Person Studies (Youth Scientific Innovation Talented Person)(2009RFQXN098)
文摘The compost of cattle manure was inoculated with complex microbial agent lower than 5 ℃ to explore the application of beneficial microbial agent and maturation accelerator aiming at accelerating the process of compostimg under the low temperature Results showed that adding the maturation accelerator accelerated the process of composting and increased the nitrogen content of composting products. Inoculating the microogannic maturation agent made the composting temperature rise quickly and the maW.ration become better.
基金Supported by Post-doctoral Management Office of Heilongjiang Province (LBH-Z06161)Key Lab of Utilization and Protection of Black Soil (GXS08-1)
文摘Microbial inoculation agent has been widely used in waste disposal and waste recycling. In this paper, the principle of fermentation in the composting of agricultural waste and the impact of microbial inoculation agent on composting were reviewed.The research and the application of microbial inoculation agent were also introduced. Based on the trend of the research, the promising prospect of microbial inoculation agent was discussed.
文摘Hossein Nassaji&Eva Kartchava(eds.),2017.Corrective Feedback in Second Language Teaching and Learning.New York:Routledge.①引言纠正性反馈(corrective feedback,CF)是指"为提示学习者二语产出中不恰当用法所提供的反馈信息"(Chaudron,1988:150)。作为教师和学生互动的一种重要体现形式,纠正性反馈一直是二语习得领域的研究热点(Sheen&Ellis,2011)。近二十年,纠正性反馈研究取得了丰厚成果,为保持良性发展、持续繁荣的态势,交流和整合反馈研究显得尤为重要;另一方面,反馈研究与教学实践呈现脱节迹象,如何有效利用研究成果改进课堂教学,成为二语研究者和教师面临的重要挑战。
