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| 1 | Satellite Thermal Infrared Earthquake Precursor to the Wenchuan M_s 8.0 Earthquake in Sichuan,China,and its Analysis on Geo-dynamics显示文摘Based on an interpretation and study of the satellite remote-sensing images of FY-2C thermal infrared 1st wave band(10.3-11.3μm) designed in China,the authors found that there existed obvious and isolated satellite thermal infrared anomalies before the 5.12 Wenchuan M_s 8.0 Earthquake.These anomalies had the following characteristics:(1) The precursor appeared rather early:on March 18, 2008,i.e.,55 days before the earthquake,thermal infrared anomalies began to occur;(2) The anomalies experienced quite many and complex evolutionary stages:the satellite thermal infrared anomalies might be divided into five stages,whose manifestations were somewhat different from each other.The existence of so many anomaly stages was probably observed for the first time in numerous cases of satellite thermal infrared research on earthquakes;(3) Each stage lasted quite a long time,with the longest one spanning 13 days;(4) An evident geothermal anomaly gradient was distributed along the Longmen seismic fracture zone,and such a phenomenon might also be discovered for the first time in satellite thermal infrared earthquake research.This discovery is therefore of great guiding and instructive significance in the study of the earthquake occurrence itself and the trend of the postearthquake phenomena. | WEI Lejun GUO Jianfeng LIU Jianhua LU Zhenquan LI Haibing CAI Hui | 2009 | Acta Geologica Sinica(English Edition)2009，83，4： | 2 |
| 2 | Analysis of nucleosome positioning in promoters of miRNA genes and protein-coding genes显示文摘Nucleosome positioning in promoters is important for gene transcription regulation. In this paper, with a nucleosome prediction model, curvature profile, the characteristics of nucleosome positioning in promoters are analyzed for miRNA genes and protein-coding genes. In the vicinity of transcription start site (TSS), there is a nucleosome-free region (NFR) followed by a positioned nucleosome at ~200 bp downstream of TSS. A similar characteristic is observed in independent intronic promoters and intergenic promoters, namely, both types of promoters have a longer NFR in 0—-400 bp upstream of TSS. Moreover, transcription factor binding sites (TFBSs) locate in the NFR with a high concentration. However, nucleosome pattern in dependent intronic promoters are like that in protein-coding promoters, with two nucleosomes positioned at -200—-400 bp and -400—-600 bp upstream of TSS. The results indicate nucleosome positioning is probably different in independent miRNA promoters and protein-coding promoters; and positioning seems to be an important factor not only in regulation of protein-coding gene, but also in that of miRNA gene. | LIU HongDe ZHANG DeJin XIE JianMing YUAN ZhiDong MA Xin LU ZhiYuan GONG LeJun SUN Xiao | 2010 | Chinese Science Bulletin2010，55，22： | 1 |
| 3 | Effects of Mn O on Crystallization,Melting,and Heat Transfer of Ca O-Al2O3-Based Mold Flux Used for High Al-Trip Steel Casting显示文摘 | Huan Zhao Wanlin Wang Lejun Zhou Boxun Lu Youn-Bae Kang | 2014 | Metallurgical and Materials Transaction B2014，45，4： | 1 |
| 4 | Co- and post-seismic slip analysis of the 2017 M_(W)7.3 Sarpol Zahab earthquake using Sentinel-1 data显示文摘The M_(w)7.3 Sarpol Zahab earthquake that occurred in the Zagros Fold-Thrust Belt(ZFTB) of Iran on November 12,2017 is the largest earthquake instrumentally recorded in the region.This earthquake provides an opportunity to investigate the slip behaviour and frictional properties of the fault,which is significant for assessing future seismic potential.In this study,we use Sentinel-1 images to map the coand post-seismic deformation to invert for the fault slip.The result indicates that most of the coseismic slip is buried in the depth range of 11-17 km,and the maximum slip is about 3.8 m at a depth of 15 km.The coseismic slip induces an increase of Coulomb stress in the unruptured area of the seismogenic fault plane,driving the afterslip.Based on the stress-driven afterslip,we obtain a frictional parameter of(ab)=(0.001-0.002) for the updip afterslip zone and(a-b)=0.0002 for the downdip afterslip zone in the framework of rate-and-state friction.The constitutive parameter(a-b) of the fault is very small,suggesting that the fault segments are close to velocity-neutral and may experience coseismic rupture. | Lejun Lu Yu Zhou | 2022 | Geodesy and Geodynamics2022，13，2： | 1 |
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