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| 1 | Analysis of magnetotail flux rope events by ARTEMIS observations显示文摘Three earthward flowing magnetic flux ropes observed in the duskside plasma sheet at geocentric solar magnetospheric coordinate X~–55 Re by P1 and P2 of acceleration,reconnection,turbulence and electrodynamics of moon’s interaction with the sun mission during 13:00–15:00 UT on July 3,2012,were studied.The morphologies of the flux ropes were studied in detail based on Grad-Shfranov reconstruction method and electronic pitch angle distribution data.It is found that(1)the flux rope cross-sectional dimensions are 1.0 Re×0.78 Re,1.3 Re×0.78 Re,and 2.5 Re×1.25 Re,respectively.The magnetic field lines were asymmetric about the center with field line compression on both sides of the current sheet at the leading region;(2)the electron energy flux data presented asymmetry with larger electron flux and lower temperature in the precursor region.The flux ropes were blocked by the resistance of compressed particle density in the front central plasma sheet and the enhanced magnetic field on its sides;and(3)it is found that the flux rope has a layered structure.From inside out,event 1 can be divided into three regions,namely electronic depletion core region,closed field line region,and the caudal area possible with fields connected with the ionosphere.It suggests that the flux ropes cannot merge with the tail magnetic field lines near the lunar orbit.Especially,the flux rope asymmetrical shape reflects the different reconnection processes that caused it on both sides of the magnetic structure.The events shown in this paper support the multiple X-line magnetic reconnection model for flux ropes with in situ observations. | TIAN AnMin SHI QuanQi ZONG QiuGang DU Jian FU SuiYan DAI YaNan | 2014 | Science China(Technological Sciences)2014，57，5： | 5 |
| 2 | Genetic breeding and seedling raising experiments with Porphyra protoplasts显示文摘 | DAI Jixun ZHANG Quanqi BAO Zhenmin | 1993 | Aquaculture1993，111，： | 1 |
| 3 | Cytochalasin B induced triploidy in Penaeus chinensis显示文摘CytochalasinBinducedtriploidyinPenaeuschinensis￥BaoZhenmin,ZhangQuanqi,WangHaiandDaiJixun(ReceivedApril5,1993;acceptedAugust1... | Bao Zhenmin,Zhang Quanqi, Wang Haiand Dai Jixun | 1994 | Acta Oceanologica Sinica1994，13，2： | 0 |
| 4 | Influence of Natural Fractures on Tight Oil Migration and Production: A Case Study of Permian Lucaogou Formation in Jimsar Sag, Junggar Basin, NW China显示文摘Natural fractures,as the main flow channels and important storage spaces,have significant effects on the migration,distribution,and accumulation of tight oil.According to outcrop,core,formation micro image(FMI),cast-thin-section,and scanning electron microscopy data from the tight reservoir within the Permian Lucaogou Formation of the Junggar Basin,tectonic fractures are prevalent in this formation mainly on micro to large scale.There are two types of fractures worth noticing:diagenetic fractures and overpressure-related fractures,primarily at micro to medium scale.The diagenetic fractures consist of bedding fractures,stylolites,intragranular fractures,grain-boundary fractures,and diagenetic shrinkage fractures.Through FMI interpretation and Monte Carlo method evaluation,the macro-fractures could be considered as migration channels,and the micro-fractures as larger pore throats that function as storage spaces.The bedding fractures formed earlier than all tectonic fractures,while the overpressure-related fractures formed in the Middle and Late Jurassic.The bedding fractures and stylolites function as the primary channels for horizontal migration of tight oil.The tectonic fractures can provide vertical migration channels and reservoir spaces for tight oil,and readjust the tight oil distribution.The overpressure-related fractures are fully filled with calcite,and hence,have little effect on hydrocarbon migration and storage capacity.The data on tight oil production shows that the density and aperture of fractures jointly determine the productivity of a tight reservoir. | Yunzhao Zhang Lianbo Zeng Qun Luo Rukai Zhu Wenya Lyu Dongdong Liu Quanqi Dai Shouxu Pan | 2021 | Journal of Earth Science2021，32，4： | 0 |
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