Microwave‐induced Fast Synthesis and Optical Resolution of 9H‐Carbazole‐2‐carboxylic Acids Enantiomers

Fast synthesis of a series 9H‐carabzole‐2‐carboxylic acids enantiomers 9—13 by N‐alkylation reaction of the carbazole and bromo ester under microwave irradiation is described using DMF as solvent. The HPLC optical resolution of these enantiomers were performed on amylose tris‐(phenylcarbamate)‐coated aminopropylated silica gel (ATPC) column.     

Control of thermoacoustic instability of liquid-spray flame with porous sound absorber

Journal of Mechanical Science and Technology - A kind of porous sound absorber was studied to control the thermoacoustic oscillation of liquid mist flame, which combined natural fibrous materials...     

管式PV/T水冷装置的对流传热性能分析与效能实验

针对PV/T的研究主要以实验方法为主缺乏理论依据的问题,利用管道液体对流传热理论,对PV/T水冷装置的热吸收能力和传热时延进行了初步分析,研究了流速对装置性能的影响。通过设计U型管水冷PV/T进行模型实验,表明了在功能方面,PV/T既可以实现太阳能的热利用,也可以降低组件温度,从而提高光伏发电效率。在性能方面,PV/T的热吸收能力受流速的影响很大,需要平衡热吸收能力与水泵驱动功率之间的矛盾。