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| 1 | Numerical simulation of bubble plumes in overlying water of gas hydrate in the cold seepage active region显示文摘To study the seismic responses produced by gas hydrate bubble plumes in the cold seepage active region, we constructed a plume water body model based on random medium theory and acoustic velocity model of bubble medium. The plume water body model was forward simulated by finite difference. Seismic records of single shot show the scattered waves produced by the plume. The scattered wave energy is strong where the plume exists. Where the scattered wave energy is stronger, the minimum of travel time is always above the plume, which has no relationship with the shot's position. Seismic records of shot gathers were processed by prestack time migration. The migration section shows that the scattered waves produced by plumes can be imaged distinctly with higher accuracy. These researches laid a foundation for further study on the seismic responses produced by plumes and provided a new approach for the identification of gas hydrate. | LI CanPing LIU XueWei GOU LiMin WANG XiangChun YIN JunJie XIE ChengLiang | 2013 | Science China Earth Sciences2013，56，4： | 11 |
| 2 | Further studies on the numerical simulation of bubble plumes in the cold seepage active region显示文摘Using the occurrence characteristics of bubble plumes in the South China Sea as a reference, this paper continues to study the seismic responses produced by bubble plumes in the cold seepage active region. To make the plume modelling scheme more reasonable, we modified the original modelling scheme and reconstructed a plume water body model based on the variation of its radius as bubbles rise in seawater. The plume seismic records of shot gathers were obtained by forward simulation. The seismic records of single shot show obvious characteristics of a scattering wave field and the periodic characteristics of the model. Seismic records of shot gathers were processed using prestack depth migration. The boundary of its imaging section has a good convergence effect.The migration sections can be imaged distinctly with higher accuracy. The aforementioned studies once again laid a foundation for the further study of the seismic responses produced by plumes. They also gradually probed a more suitable seismic data processing method for plumes and provided a theoretical guidance for the identification of plumes. | LI Canping GOU Limin YOU Jiachun LIU Xuewei OU Chuling | 2016 | Acta Oceanologica Sinica2016，35，1： | 8 |
| 3 | Numerical Simulation of Bubble Plumes and an Analysis of Their Seismic Attributes显示文摘To study the bubble plume's seismic response characteristics,the model of a plume water body has been built in this article using the bubble-contained medium acoustic velocity model and the stochastic medium theory based on an analysis of both the acoustic characteristics of a bubble-contained water body and the actual features of a plume.The finite difference method is used for forward modelling,and the single-shot seismic record exhibits the characteristics of a scattered wave field generated by a plume.A meaningful conclusion is obtained by extracting seismic attributes from the pre-stack shot gather record of a plume.The values of the amplitude-related seismic attributes increase greatly as the bubble content goes up,and changes in bubble radius will not cause seismic attributes to change,which is primarily observed because the bubble content has a strong impact on the plume's acoustic velocity,while the bubble radius has a weak impact on the acoustic velocity.The above conclusion provides a theoretical reference for identifying hydrate plumes using seismic methods and contributes to further study on hydrate decomposition and migration,as well as on distribution of the methane bubble in seawater. | LI Canping GOU Limin YOU Jiachun | 2017 | Journal of Ocean University of China2017，16，2： | 4 |
| 4 | A direct real-time polymerase chain reaction assay for rapid high-throughput detection of highly pathogenic North American porcine reproductive and respiratory syndrome virus in China without RNA purification显示文摘Background:Porcine reproductive and respiratory syndrome virus(PRRSV),and particularly its highly pathogenic genotype(HP-PRRSV),have caused massive economic losses to the global swine industry.Results:To rapidly identify HP-PRRSV,we developed a direct real-time reverse transcription polymerase chain reaction method(dRT-PCR) that could detect the virus from serum specimen without the need of RNA purification.Our dRT-PCR assay can be completed in 1.5 h from when a sample is received to obtaining a result.Additionally,the sensitivity of dRT-PCR matched that of conventional reverse transcription PCR(cRT-PCR) that used purified RNA.The lowest detection limit of HP-PRRSV was 6.3 TCID_(50) using dRT-PCR.We applied dRT-PCR assay to 144 field samples and the results showed strong consistency with those obtained by cRT-PCR.Moreover,the dRT-PCR method was able to tolerate 5-20%(v/v) serum.Conclusions:Our dRT-PCR assay allows for easier,faster,more cost-effective and higher throughput detection of HP-PRRSV compared with cRT-PCR methods.To the best of our knowledge,this is the first report to describe a real-time RT-PCR assay capable of detecting PRRSV in crude serum samples without the requirement for purifying RNA.We believe our approach has a great potential for application to other RNA viruses. | Kang Kang Keli Yang Jiasheng Zhong Yongxiang Tian Limin Zhang Jianxin Zhai Li Zhang Changxu Song Christine Yuan Gou Jun Luo Deming Gou | 2015 | Journal of Animal Science and Biotechnology2015，6，1： | 2 |
| 5 | Sources,dispersal and preservation of sedimentary organic matter in the Yellow Sea: the importance of depositional hydrodynamic forcing显示文摘 | Hu Limin Shi Xuefa Gou Zhigang | 2013 | Marine Geology2013，335，： | 1 |
| 6 | Suppressing random noise to broaden the useful bandwidth of seismic reflection data显示文摘在许多区域的地震思考数据的 signal-to-noise 比率(SNR ) 是设计从信号外面与不同行动压制噪音的相当差、常规的二维的过滤器趋于产生人工制品。我们扩大了多信道的过滤的一个方法,基于邻近的隧道上的信号是类似的假设,为提高叠的节上的 SNR。用仅仅 SNR 最高的中间范围的频率,事件趋势被作出对有利的裁决重叠节和平均信号向量上的窗口被计算。然后,从完整的带宽节的数据被投射到空间地变化的单位类似向量上,结果为重叠窗户被合并。到包含陡峭地蘸的事件的合成数据并且到为一根海洋的 2D 线的叠的节的方法的申请生产了好结果。我们介绍了的修正在计算时间带小开销,但是他们应该使方法能甚至在包含陡峭的剧降的节上有效地被过去常。 | Liu Xuewei Gou Limin | 2007 | Applied Geophysics2007，4，1： | 1 |
| 7 | The Dof transcription factor COG1 acts as a key regulator of plant biomass by promoting photosynthesis and starch accumulation显示文摘Photosynthetic efficiency is the primary determinant of crop yield,including vegetative biomass and grain yield.Manipulation of key transcription factors known to directly control photosynthetic machinery can be an effective strategy to improve photosynthetic traits.In this study,we identified an Arabidopsis gain-of-function mutant,cogwheel1-3D,that shows a significantly enlarged rosette and increased biomass compared with wild-type plants.Overexpression of COG1,a Dof transcription factor,recapitulated the phenotype of cogwheel1-3D,whereas knocking out COG1 and its six paralogs resulted in a reduced rosette size and decreased biomass.Transcriptomic and quantitative reverse transcription polymerase chain reaction analyses demonstrated that COG1 and its paralogs were required for light-induced expression of genes involved in photosynthesis.Further chromatin immunoprecipitation and electrophoretic mobility shift assays indicated that COG1 can directly bind to the promoter regions of multiple genes encoding light-harvesting antenna proteins.Physiological,biochemical,and microscopy analyses revealed that COG1 enhances photosynthetic capacity and starch accumulation in Arabidopsis rosette leaves.Furthermore,combined results of bioinformatic,genetic,and molecular experiments suggested that the functions of COG1 in increasing biomass are conserved in different plant species.These results collectively demonstrated that COG1 acts as a key regulator of plant biomass by promoting photosynthesis and starch accumulation.Manipulating COG1 to optimize photosynthetic capacity would create new strategies for future crop yield improvement. | Zhuoyun Wei Haoyong Zhang Meng Fang Shuyuan Lin Mingsong Zhu Yuxiu Li Limin Jiang Tianliang Cui Yanwei Cui Hong Kui Liang Peng Xiaoping Gou Jia Li | 2023 | Molecular Plant2023，16，11： | 0 |
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