This study investigates the X-ray properties and evolution of Type II supernovae (SNe II) observed by Swift, examining variations among supernovae and exploring their X-ray characteristics over time. We present the fi...This study investigates the X-ray properties and evolution of Type II supernovae (SNe II) observed by Swift, examining variations among supernovae and exploring their X-ray characteristics over time. We present the first X-ray study of the Type IIp supernova SN 2008ij using data from the Swift X-ray mission. This investigation focuses on its spectral properties, identifying an X-ray flux of 1.20 (+0.11, −0.10) × 10−13 erg/cm2/s and a plasma temperature of 4.76 (+1.22, −0.83) keV. Our study marks an advancement in understanding SN 2008ij, providing crucial results into its X-ray emission characteristics. These results lay the groundwork for future studies of Type IIp supernovae, offering a foundation for exploring their evolutionary and physical processes.展开更多
Nowadays,with the depletion of high-grade scheelite resources,the efficient exploitation of complex,low grade with complicated geological structure scheelite ore have to take into account.This work introduces a feasib...Nowadays,with the depletion of high-grade scheelite resources,the efficient exploitation of complex,low grade with complicated geological structure scheelite ore have to take into account.This work introduces a feasible mineral processing method for the beneficiation of low grade and complex scheelite using the X-ray transmission(XRT) pre-concentration technology and mixed collectors.The results of XRT sorting shown that 94.85% WO_(3) can be recovered with the discarding rate reached40.62%.The closed-circuit flotation of actual ore using mixed collector obtained scheelite concentrate of 61.09% WO_(3) grade with WO_(3) recovery of 89.49%.The combined flowsheet of XRT sorting and mixed collector brought about RMB 4.5 million yuan profit per year for the mine company.展开更多
文摘This study investigates the X-ray properties and evolution of Type II supernovae (SNe II) observed by Swift, examining variations among supernovae and exploring their X-ray characteristics over time. We present the first X-ray study of the Type IIp supernova SN 2008ij using data from the Swift X-ray mission. This investigation focuses on its spectral properties, identifying an X-ray flux of 1.20 (+0.11, −0.10) × 10−13 erg/cm2/s and a plasma temperature of 4.76 (+1.22, −0.83) keV. Our study marks an advancement in understanding SN 2008ij, providing crucial results into its X-ray emission characteristics. These results lay the groundwork for future studies of Type IIp supernovae, offering a foundation for exploring their evolutionary and physical processes.
文摘Nowadays,with the depletion of high-grade scheelite resources,the efficient exploitation of complex,low grade with complicated geological structure scheelite ore have to take into account.This work introduces a feasible mineral processing method for the beneficiation of low grade and complex scheelite using the X-ray transmission(XRT) pre-concentration technology and mixed collectors.The results of XRT sorting shown that 94.85% WO_(3) can be recovered with the discarding rate reached40.62%.The closed-circuit flotation of actual ore using mixed collector obtained scheelite concentrate of 61.09% WO_(3) grade with WO_(3) recovery of 89.49%.The combined flowsheet of XRT sorting and mixed collector brought about RMB 4.5 million yuan profit per year for the mine company.
