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Differences of Polygonal Faults with Irregularly Polygonal Geometries: A Case Study from the Changchang Sag of Qiongdongnan Basin, Northern South China Sea

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Journal of Ocean University of China 2023年第1期22卷 119-135页

作者： LI Yufeng PU Renhai ZHANG Gongcheng fan xiaowei School of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China Key Laboratory of Marine Mineral Resources Ministry of Natural ResourcesGuangzhou 510075China CNOOC Research Institute Beijing 100028China Research Institute of Yangchang Petroleum(Group)Co. Ltd.Xi’an 710075China

Polygonal faults(PFs)generally have a classic polygonal geometry in map ***,under the influence of tectonic faults,diapirs,channels,and slopes,the classic polygonal geometry of PFs is not preserved,demonstrating differences(different characters)in map-view 3D seismic data covering an area of 334km^(2) of the Changchang(CC)sag,are used to document the mapview and cross-sectional characteristics of *** data also help investigate the irregularly polygonal geometries of PFs due to the presence of influence factors,such as transtensional faults,submarine fans,channels,diapirs/gas chimneys,and the basal slope within the lower-middle Miocene *** show that various irregularly polygonal geometries of PFs can be classified into enechelon and arcuate PFs,channel-segmenting and-bounding PFs,radial PFs,and rectangular PFs in ***-echelon and arcuate PFs are induced by transtensional faults and exhibit a unique‘flower’structure in NE-and SE-trending cross-sections in the NW area of the study *** finding is documented for the first ***-segmenting PFs occur in the(northwest)low-amplitude muddy channel and are inhibited in the(southeast)high-amplitude sandy channel in the SW *** PFs are radially aligned around a gas chimney/diapir containing some high-amplitude anomalies(HAAs)in the middle *** presence of intrusive sandstones with HAAs along the periphery of the diapirs restricts the occurrence of *** high-amplitude submarine fans act as a mechanical barrier to the propagation of ***,the(moderate)slope in the NE area induces rectangular ***,the geneses of the PFs in the current study are comprehensively *** study adds to our understanding of the differences between PFs with irregularly polygonal geometries.

关键词： channel diapir genesis influence factors northern South China Sea polygonal fault slope transtensional faults

Securing Patient-Centric Personal Health Records Sharing System in Cloud Computing

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China Communications 2014年第A01期11卷 121-127页

作者： CHEN Danwei CHEN Linling fan xiaowei HE Liwen PAN Su Hu Ruoxiang NanjingUniversityofPostsandTelecommunications Nanjing210003JiangsuProvinceER.China InformationSecurityCenter BeijingUniversityofPostsandTelecommunicationsBeijing100876China NationalEngineeringLaboratoryforDisasterBackupandRecovery Beijing100876China

Personal health record （PHR） enables patients to manage their own electronic medical records （EMR） in a centralized way, and it is oRen outsourced to be stored in a third-party server. In this paper we propose a novel secure and scalable system for sharing PHRs. We focus on the multiple data owner scenario, and divide the users in the system into multiple security domains that greatly reduce the key management complexity for owners and users. A high degree of patient privacy is guaranteed by exploiting hierarchical and multi- authority attribute-sets based encryption （HM- ASBE）. Our system not only supports compound attributes due to flexible attribute sets combinations, but also achieves fine-grained access control. Our scheme supports efficient on-demand user/attribute revocation and break-glass access under emergency scenarios.

关键词： personal health records attribute- based encryption data privacy fine-grained access control

Deformation mechanism of rock mass and prestressed anchor cable support technology of Haidong soft rock tunnel

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Journal of Mountain Science 2024年第12期21卷 4299-4322页

作者： LEI Xiaotian TAO Zhigang LIU Keyuan YANG Hong CAI Mingjiu fan xiaowei State Key Laboratory for Tunnel Engineering Beijing 100083China School of Mechanics and Civil Engineering China University of Mining&TechnologyBeijing 100083China China Railway 20th Bureau Group Co. Ltd.Xi’an 710016China China Railway 5th Bureau Fifth Company Chenzhou 423000China School of Energy and Environment Zhongyuan University of TechnologyZhengzhou 450007China

The Haidong Tunnel is one of the four soft rock tunnels of the Central Yunnan Water Diversion Project(CYWDP),where large deformation hazards of soft rock occur frequently,which seriously affect construction *** effect of highly prestressed anchor cable support was studied based on the active support test in the No.3 branch tunnel of Haidong ***,the geological conditions and failure causes were analyzed on the basis of the results of geological survey,in-situ test,and rock laboratory ***,the Mohr circle form of the highly prestressed anchor cable active support theory for the support of bedded rock mass was given in combination with the excavation compensation *** is considered that the prestress active compensation value required for the bedded rock mass is larger than that for the homogeneous rock *** deformations of rock mass under both passive and active supports were analyzed by numerical ***,the'pressure bubble'mechanical model for anchor cable support of bedded rock mass in Haidong Tunnel is *** monitoring results show that the highly prestressed anchor cable support can control rock mass deformation well,with a maximum deformation of about 200 *** prestressed anchor cable is effective in the bedded stratum,which makes the stress of rock mass uniform and reduces the risk of failure of steel arches due to local ***,the expansion of plastic zone was efficiently controlled,which is of positive significance for the overall stability of rock mass.

关键词： Central Yunnan Water Diversion Project Large deformation of soft rock Prestressed anchor cable Active support 'Pressure bubble'mechanical model

Global analysis of CCT family knockout mutants identifies four genes involved in regulating heading date in rice

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Journal of Integrative Plant Biology 2021年第5期63卷 913-923页

作者： Jia Zhang xiaowei fan Yong Hu Xiangchun Zhou Qin He Liwen Liang Yongzhong Xing National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070China College of Life Science Jiangxi Normal UniversityNanchang 330022China

Many genes encoding CCT domain-containing proteins regulate flowering time. In rice(Oryza sativa), 41 such genes have been identified, but only a few have been shown to regulate heading date. Here, to test whether and how additional CCT family genes regulate heading date in rice, we classified these genes into five groups based on their diurnal expression patterns. The expression patterns of genes in the same subfamily or in close phylogenetic clades tended to be similar. We generated knockout mutants of the entire gene family via CRISPR/Cas9. The heading dates of knockout mutants of only 4 of 14 genes previously shown to regulate heading date were altered, pointing to functional redundancy of CCT family genes in regulating this trait. Analysis of mutants of four other genes showed that OsCCT22, OsCCT38, and OsCCT41 suppress heading under long-day conditions and promote heading under short-day conditions. OsCCT03 promotes heading under both conditions and upregulates the expression of Hd1 and Ehd1, a phenomenon not previously reported for other such genes. To date, at least 18 CCT domaincontaining genes involved in regulating heading have been identified, providing diverse, flexible gene combinations for generating rice varieties with a given heading date.

关键词： CCT family genes constant promoter of flowering CRISPR/Cas9 expression patterns knockout mutants rice

Differences of polygonal faults related to upper Miocene channels:a case study from the Beijiao sag of Qiongdongnan basin,South China Sea

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Journal of Oceanology and Limnology 2023年第1期41卷 84-99页

作者： Yufeng LI Renhai PU Xueqin ZHAO Gongcheng ZHANG xiaowei fan Jingjing BAO Jiong WANG School of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China Key Laboratory of Marine Mineral Resources Ministry of Natural ResourcesGuangzhou 510075China CNOOC Research Institute Beijing 100028China Research Institute of Yangchang Petroleum(Group)Co.Ltd. Xi’an 710075China Laboratory of Ocean and Coast Geology Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China Central Sichuan Oil-Gas District Petro-China Southwest Oil and Gas Field CompanySuining 629000China

Deep-water coarse-grained channels are embedded within a polygonal fault tier,and the polygonal faults(PFs)present non-polygonal geometries rather than classic polygonal geometry in plan ***,PFs present differences when they encounter deep-water(coarse-grained ***-grained)channels with different lithology,which has not been further studied to ***-dimensional(3D)seismic data and a drilling well from Beijiao sag of Qiongdongnanbasin,South China Sea were utilized to document the plan view and cross-sectional properties of the PFs and their differences and genetic mechanism were *** show that,first,PFs can be divided morphologically into channel-segmenting PFs and channel-bounding PFs in plan *** former virtually cuts or segments the axes of channels in highand low-amplitudes,and the latter nearly parallels the boundaries of the *** are approximately perpendicular to each ***,channel-bounding PFs that related to low-amplitude channels are much longer than those of high-amplitude ones;channel-segmenting PFs related to low-amplitude channels are slightly longer than the counterparts related to high-amplitude ***,the magnitudes(e.g.,heights)of the PFs are proportional to the scales(e.g.,widths and heights)of low-amplitude channels,whereas the magnitudes of the PFs are inversely proportional to the scales of high amplitude ***-grained(high amplitude)channels act as a mechanical barrier to the propagation of PFs,whereas fine-grained(low-amplitude)channels are beneficial to the propagation and nucleation of ***,the genetic mechanism of PFs is discussed and reckoned as combined geneses of gravitational spreading and overpressure *** differences of the PFs can be used to reasonably differentiate coarse-grained channels from fine-grained *** study provides new insights into understanding the different geometries of the PFs related to coarse-grained and fine

关键词： polygonal faults coarse-grained channels fine-grained channels gravitational spreading overpressure hydrofracture

A Novel Method to Enhance the Inversion Speed and Precision of the NMR T_(2) Spectrum by the TSVD Based Linearized Bregman Iteration

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 2451-2463页

作者： Yiguo Chen Congjun Feng Yonghong He Zhijun Chen xiaowei fan Chao Wang Xinmin Ge State Key Laboratory of Continental Dynamics Northwest UniversityXi’an710069China Department of Geology Northwest UniversityXi’an710069China Reseach Institute of Shaanxi Yanchang Petroleum(Group)Co. Ltd.Xi’an710075China School of Geosciences China University of PetroleumQingdao266580China

The low-field nuclear magnetic resonance(NMR)technique has been used to probe the pore size distribution and the fluid composition in geophysical prospecting and related ***,the speed and accuracy of the existing numerical inversion methods are still challenging due to the ill-posed nature of the first kind Fredholm integral equation and the contamination of the *** paper proposes a novel inversion algorithmto accelerate the convergence and enhance the precision using empirical truncated singular value decompositions(TSVD)and the linearized Bregman *** L1 penalty term is applied to construct the objective function,and then the linearized Bregman iteration is utilized to obtain fast *** reduce the complexity of the computation,empirical TSVD is proposed to compress the kernel matrix and determine the appropriate truncated *** novel inversion method is validated using numerical *** results indicate that the proposed novel method is significantly efficient and can achieve quick and effective data solutions with low signal-to-noise ratios.

关键词： Low field nuclear magnetic resonance linearized bregman iteration truncated singular value decomposition numerical simulations

The amino acid residue E96 of Ghd8 is crucial for the formation of the flowering repression complex Ghd7-Ghd8-OsHAP5C in rice

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Journal of Integrative Plant Biology 2023年第4期65卷 1012-1025页

作者： Shuangle Li Yong Hu Chen An Qingli Wen xiaowei fan Zhanyi Zhang Ahmed Sherif Haiyang Liu Yongzhong Xing National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityHongshan LaboratoryWuhan 430070China College of Agriculture Yangtze UniversityJingzhou 434000China Hongshan Laboratory Wuhan 430070China

Ghd7 is an important gene involved in the photoperiod flowering pathway in rice.A Ghd7-involved transcriptional regulatory network has been established,but its translational regulatory pathway is poorly *** mutant suppressor of overexpression of Ghd7(sog7)was identified from EMS-induced mutagenesis on the background of ZH11 overexpressing *** Map analysis revealed that SOG7 is allelic to Ghd8 and delayed flowering under long-day(LD)*** assays showed that Ghd8 interacts with OsHAP5C and Ghd7 both in vivo and in ***,a point mutation E96K in theα2 helix of the Ghd8 histone fold domain(HFD)destroyed its ability to interact with *** prediction of the structure shows that mutated amino acid is located in the interaction region of CCT/NF-YB/YC complexes,which alter the structure ofα4 of *** structural difference prevents the formation of complex NF-YB/*** triple complex of Ghd8-OsHAP5C-Ghd7 directly bound to the promotor of Hd3a and downregulated the expression of Ehd1,Hd3a and RFT1,and finally resulted in a delayed *** findings are helpful in deeply understanding the Ghd7-involved photoperiod flowering pathway and promote the elucidation of rice heading.

关键词： Ghd7‐Ghd8‐OsHAP5C complex heading date point mutation promoter of Hd3a protein structure

Research on multi-time scale doubly-fed wind turbine test system based on FPGA+CPU heterogeneous calculation

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Global Energy Interconnection 2019年第1期2卷 7-18页

作者： Qing Mu Xing Zhang Xiaoxin Zhou xiaowei fan Yingmei Liu Dongbo Pan China Electric Power Research Instituite State Grid Chongqing Electric Power Company Global Energy Interconnection Development and Cooperation Organization

As the proportion of renewable energy increases, the interaction between renewable energy devices and the grid continues to enhance. Therefore, the renewable energy dynamic test in a power system has become more and more important. Traditional dynamic simulation systems and digital-analog hybrid simulation systems are difficult to compromise on the economy, flexibility and accuracy. A multi-time scale test system of doubly fed induction generator based on FPGA+ CPU heterogeneous calculation is proposed in this paper. The proposed test system is based on the ADPSS simulation platform. The power circuit part of the test system is setup up using the EMT(electromagnetic transient simulation) simulation, and the control part uses the actual physical devices. In order to realize the close-loop testing for the physical devices, the power circuit must be simulated in real-time. This paper proposes a multi-time scale simulation algorithm, in which the decoupling component divides the power circuit into a large time scale system and a small time scale system in order to reduce computing effort. This paper also proposes the FPGA+CPU heterogeneous computing architecture for implementing this multitime scale simulation. In FPGA, there is a complete small time-scale EMT engine, which support the flexibly circuit modeling with any topology. Finally, the test system is connected to an DFIG controller based on Labview to verify the feasibility of the test system.

关键词： Renewable energy gen erati on Doubly fed in duction generator ADPSS simulati on system Wind turbine test system Multi-time scale FPGA+CPU

The CCT transcriptional activator Ghd2 constantly delays the heading date by upregulating CO3 in rice

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Journal of Genetics and Genomics 2023年第10期50卷 755-764页

作者： xiaowei fan Pengfei Wang Feixiang Qi Yong Hu Shuangle Li Jia Zhang Liwen Liang Zhanyi Zhang Juhong Liu Lizhong Xiong Yongzhong Xing National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhanHubei 430070China Hubei Hongshan Laboratory WuhanHubei 430070China

CONSTANS,CO-like,and TOC1(CCT)family genes play important roles in regulating heading date,which exerts a large impact on the regional and seasonal adaptation of *** studies have shown that Grain number,plant height,and heading date2(Ghd2)exhibits a negative response to drought stress by directly upregulating Rubisco activase and exerting a negative effect on heading ***,the target gene of Ghd2 regulating heading date is still *** this study,CO3 is identified by analyzing Ghd2 ChIP-seq ***2 activates CO3 expression by binding to the CO3 promoter through its CCT *** experiments show that the motif CCACTA in the CO3 promoter was recognized by Ghd2.A comparison of the heading dates among plants with CO3 knocked out or overexpressed and double-mutants with Ghd2 overexpressed and CO3 knocked out shows that CO3 negatively and constantly regulates flowering by repressing the transcription of Ehd1,Hd3a,and *** addition,the target genes of CO3 are explored via a comprehensive analysis of DAP-seq and RNA-seq *** together,these results suggest that Ghd2 directly binds to the downstream gene CO3,and the Ghd2eCO3 module constantly delays heading date via the Ehd1-mediated pathway.

关键词： Heading date CCT family gene ChIP-seq Constant repressor Rice(Oryza sativa L.)