Based on the monitoring data of lightning activity in Huai'an from 2011 to 2014,the temporal and spatial distribution of lightning activity and lightning density were analyzed. The results show that positive and n...Based on the monitoring data of lightning activity in Huai'an from 2011 to 2014,the temporal and spatial distribution of lightning activity and lightning density were analyzed. The results show that positive and negative lightning activity in Huai'an had obvious seasonal variations and diurnal variations during 2011-2014. The month changes of positive and negative lightning activity had a single peak and valley,while the diurnal variations of both positive and negative lightning activity had double peaks and valleys. The high-value areas of ground flash density in Huai'an had obvious randomness. Seen from the spatial distribution of annual average of ground flash density,lightning activity was mainly distributed in Xuyi County,Jinhu County and Huai'an District.展开更多
The surface phenomena of Pb-Sn alloy under the Ar^(+) ion bombardment have been investigated by using a PHI-590 scanning Auger microprobe at room temperature.Theoretical analysis of experimental data showed that ion-b...The surface phenomena of Pb-Sn alloy under the Ar^(+) ion bombardment have been investigated by using a PHI-590 scanning Auger microprobe at room temperature.Theoretical analysis of experimental data showed that ion-bombardment-enhanced diffusion had occurred with a diffusion coefficient up to 10^(-15)cm^(2)/sec.A possible explanation is given.展开更多
文摘Based on the monitoring data of lightning activity in Huai'an from 2011 to 2014,the temporal and spatial distribution of lightning activity and lightning density were analyzed. The results show that positive and negative lightning activity in Huai'an had obvious seasonal variations and diurnal variations during 2011-2014. The month changes of positive and negative lightning activity had a single peak and valley,while the diurnal variations of both positive and negative lightning activity had double peaks and valleys. The high-value areas of ground flash density in Huai'an had obvious randomness. Seen from the spatial distribution of annual average of ground flash density,lightning activity was mainly distributed in Xuyi County,Jinhu County and Huai'an District.
文摘The surface phenomena of Pb-Sn alloy under the Ar^(+) ion bombardment have been investigated by using a PHI-590 scanning Auger microprobe at room temperature.Theoretical analysis of experimental data showed that ion-bombardment-enhanced diffusion had occurred with a diffusion coefficient up to 10^(-15)cm^(2)/sec.A possible explanation is given.
