Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Li, Ying"'
Publikováno v:
E3S Web of Conferences, Vol 257, p 03041 (2021)
This paper analyzes the air quality monitoring data of Qingyang, Tianshui and Pingliang in northwestern China in 2015 by time series analysis. The research results are as follows: (1) the concentrations of PM2.5, PM10 and SO2 in the three cities bega
Publikováno v:
EAS Publications Series. 64:435-436
After a detailed investigation of new observations obtained by small telescopes, we found a group of near and shallow contact binaries with decreasing period including BS Vul, MR Com, EP Cep, ES Cep and V369 Cep. BS Vul and V369 Cep are primary-filli