|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Total gaseous mercury in Pearl River Delta region, China during 2008 winter period显示文摘 | Zheng Li Chonghuan Xia Xinming Wang Yunrong Xiang Zhouqing Xie | 2010 | Atmospheric Environment2010，，4： | 1 |
| 2 | Methylmercury and trace elements in the marine fish from coasts of East China显示文摘 | XIA Chonghuan WU Xiaoguo LAM J C W | 2013 | Journal of Environmental Science and Health2013，48，12： | 1 |
| 3 | Polychlorinated biphenyls (PCBs) in marine fishes from China: Levels, distribution and risk assessment显示文摘 | Chonghuan Xia James C.W. Lam Xiaoguo Wu Zhouqing Xie Paul K.S. Lam | 2012 | Chemosphere2012，，8： | 1 |
| 4 | Primordial magnetic fields from gravitationally coupled electrodynamics in nonsingular bounce cosmology显示文摘We in this paper study a class of mechanism of the production of the primordial magnetic field(PMF) in the non-singular bouncing cosmology, through the coupling of the electromagnetic field to gravity. We adopt an electrodynamic model with a coupling coefficient as a function of the scale factor a, i.e., f = 1 +(a/a?)^(-n), with a? and n > 0 being constants. With analytical calculations, we find that this model can yield a blue tilted power spectrum of PMF on large scales from 1 Mpc to the Hubble length if the bounce scenario has experienced a contracting phase with an equation-of-state parameter larger than-1/3. Furthermore, in order to satisfy the constraints of observational data, the present mechanism favors the so-called ekpyrotic-bounce paradigm. The back-reaction of the energy density of PMF at the bouncing point can lead to additional theoretical constraints on the underlying bouncing paradigm. | JieWen Chen ChongHuan Li YuBin Li Mian Zhu | 2018 | Science China(Physics,Mechanics & Astronomy)2018，61，10： | 0 |
| 5 | Atmospheric polychlorinated biphenyls measured during the 2008 Chinese National Arctic Research Expedition显示文摘From July to September 2008, air samples were collected aboard the R/V XUE LONG icebreaker(Snow Dragon) as part of the 2008 Chinese National Arctic Research Expedition program. ∑20PCBs in the atmosphere ranged from 6.20 to 365 pg?m-3 with average concentration 117±107 pg?m-3. Congener profiles in all samples showed a prevalence of tri- and tetrachlorobiphenyls, dominated by PCB-18, PCB-28, PCB-44 and PCB-52. Along the cruise, the highest concentration was observed over the Sea of Japan and the lowest over the high-latitude Arctic Ocean. Air mass backward trajectories indicated that samples with relatively high levels of PCBs might have been influenced by atmospheric transport of these chemicals from primary and/or secondary sources. PCB-18 displayed a significant correlation between vapor pressure and ambient temperature along the cruise, but there was no such correlation between gas-phase concentration and latitude. This suggests that atmospheric PCB-18 was related to volatilization from the earth surface during summer 2008, during which temperatures were relatively high. PCB-52 presented a significant correlation between gas-phase concentration and latitude, but no such correlation was found between vapor pressure and ambient temperature, indicating that atmospheric PCB-52 detected during the cruise might be attributed directly to atmospheric transport from source regions. In the Arctic, levels of PCB-52 in the floating sea ice region were higher than those measured in the open sea area and pack ice region. Intense ice retreat during summer 2008 might have enhanced the volatilization of previously accumulated PCBs from sea ice, especially those with heavier molecular weight and lower vapor pressure such as PCB-52. | WU Xiaoguo James C W Lam XIA Chonghuan KANG Hui XIE Zhouqing Paul K S Lam | 2015 | Advances in Polar Science2015，26，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员