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The first extra-large helium-rich gas field identified in a tight sandstone of the Dongsheng Gas Field,Ordos Basin,China

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Science China Earth Sciences 2022年第5期65卷 874-881页

作者： weilong PENG Quanyou LIU Ying ZHANG Huichong JIA Dongya ZHU Qingqiang MENG Xiaoqi WU Shang DENG Yongsheng MA State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing 100083China Petroleum Exploration and Production Research Institute SINOPECBeijing 100083China Exploration and Production Research Institute SINOPEC North China BranchZhengzhou 450006China Ma Yongsheng’s Laboratory Beijing 100083China SINOPEC Company Limited Beijing 100728China

Helium gas is a scarce but important strategic resource,which is usually associated with natural ***,only one extra-large helium-rich gas field has been found in China:the Hetianhe Gas Field in the Tarim *** paper reports a new example,the Dongsheng Gas Field(DGF)in the Ordos *** this study,92 natural gas samples from the DGF were analyzed for helium content and isotope composition using isotope mass *** natural gas samples were found to have an average helium content of 0.133%,with 65(70.7%)of the samples having a helium content of 0.1%or *** on the proven natural gas reserves of the DGF,the proven geological helium reserves were calculated to be 1.96×10^(8)m^(3),suggesting that it represents the first extra-large helium-rich natural gas reservoir to be hosted in tight sandstone in *** ^(3)He/^(4)He ratios of 5 natural gas samples from the DGF are within the range of 3.03×10^(−8)–3.44×10^(−8).Therefore,the helium in the gas field is thought to be of typical crustal origin and to have formed in the granitic basement that is rich in uranium and *** accumulation of helium-rich natural gas was controlled by regional tectonic *** along the fault connecting the reservoir with the basement caused release of the helium gas,which entered the overlying strata along the fault and accumulated with conventional hydrocarbon *** on the structural background and the distribution of helium source rocks in the Ordos Basin,the main helium source rocks with high exploration potential are located in deep strata within the north and middle parts of the basin.

关键词： Helium gas Granitic basement Radiogenesis Dongsheng Gas Field Ordos Basin

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Estimation of lunar titanium content: Based on absorption features of Chang’E-1 interference imaging spectrometer (ⅡM)

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Science China(Physics,Mechanics & Astronomy) 2010年第12期53卷 2136-2144页

作者： LIU FuJiang QIAO Le LIU Zheng YANG Rong SHI JinPing ZHANG Ying WU weilong Faculty of Information Engineering China University of GeosciencesWuhan 430074China

Two linear regression models based on absorption features extracted from CE-1 IIM image data are presented to discuss the relationship between absorption features and titanium content. We computed five absorption parameters (Full Wave at Half Maximum (FWHM), absorption position, absorption area, absorption depth and absorption asymmetry) of the spectra collected at Apollo 17 landing sites to build two regression models, one with FWHM and the other without FWHM due to the low relation coefficient between FWHM and Ti content. Finally Ti content measured from Apollo 17 samples and Apollo 16 samples was used to test the accuracy. The results show that the predicted values of the model with FWHM have many singular values and the result of model without FWHM is more stable. The two models are relatively accurate for high-Ti districts, while seem inexact and disable for low-Ti districts.

关键词： titanium content linear regression absorption features Moon Chang’E-1

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Complementary multicolor electrochromic devices with excellent stability based on porous tin oxide nanosheet scaffold

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Nano Research 2024年第4期17卷 3035-3042页

作者： Chenchen Bian Jinhui Wang Huanhuan Liu Yin Yan Ping Zhang weilong Yang Sensen Jia Xiaodan Guo Guofa Cai Key Laboratory for Special Functional Materials of Ministry of Education National&Local Joint Engineering Research Center for High-Efficiency Display and Lighting TechnologySchool of Materials and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China

Electrochromic devices(ECDs)have been extensively investigated as promising candidates in broad cutting-edge applications,such as smart windows,electronic labels,adaptive camouflage,***,they have suffered from either inadequate color variations or poor cycling stability for a long ***,we developed a general strategy to boost the cyclic stability and enrich the color variations of ECDs by scrupulous design of the composition and nanostructure of electrodes,in which porous tin oxide(SnO_(2))nanosheets serve as the scaffold and typical metal oxides or conducting polymers as the active electrochromic *** electrochromic composite materials,including polyaniline(PANI)@SnO_(2),V2O5@SnO_(2),and WO_(3)@SnO_(2) heterostructured nanoarrays were prepared by the facile wet-chemical *** composite electrodes exhibit remarkable electrochromic performances,e.g.,superior cycling stability(more than 2000 cycles),rich color variations(more than 5 colors for PANI@SnO_(2)),and enlarged optical *** excellent performances account for the heterogenous porous nanoarrays,which not only facilitate the intercalation/extraction of ions but also relieve the stress generated during the electrochemical *** addition,diverse prototypes of complementary multicolor ECD with excellent cycling stability(over thousands of cycles)and rich color variations(8 colors)were realized for the first *** believe that our work put forward a general strategy for developing high-quality multicolor complementary electrochromic devices.

关键词： electrochromism tin oxide metal oxide cycling stability multicolor complementary device

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Permian Tectonic Evolution in the Middle Part of Central Asian Orogenic Belt: Evidence from Newly Identified Volcanic Rocks in the Bilutu Area, Inner Mongolia

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1281-1299页

作者： WANG Shijie LIU Yang DONG Xiaojie XU Zhongyuan WANG Wenlong LI Shichao SHI Qiang CUI weilong College of Earth Science Jilin UniversityChangchun 130061China Tianjin Center of Geological Survey China Geological SurveyTianjin 300170China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China

In this study, zircon U-Pb ages, geochemical and Lu-Hf isotopic data are presented for the newly identified volcanic rocks which were considered as Bainaimiao group in Bainaimiao Arc Belt(BAB), Inner Mongolia, which could provide important constraints on the evolution of the northern part of North China Block(NCB) and BAB. Basalt to basaltic andesite and andesite to dacite were collected from two sections, which showed eruption ages of 278.2±4.1 Ma and 258.3±3.0 Ma respectively. All samples are characterized by high abundances in Al2O3, LREEs, and LILEs, but depleted in HFSEs. Together with high Mg# ratios and low K/tholeiite to calc-alkaline series, these features indicated that basalt to andesite was likely derived from relatively low degree partial melting of the subduction-fluid related mantle in the spinel phase. And dacite was mainly from the partial melting of crust, then affected by mantle. All samples barely went through fractional crystallization process with the slight Eu anomaly. Compared with the contemporary basalt in NCB, rocks in BAB have a complex composition of zircon and a more positive εHf(t) value(-6.6-6.4), indicating that they had different magma sources of rocks. Though with different basements, NCB and BAB have become an integrated whole before 278 Ma. Therefore, it could be concluded that NCB and BAB belonged to the active continental margin and the PAO had not closed yet until late Permian and then it disappeared gradually and the CAOB developed into a condition of syn-post collision.

关键词： Permian volcanic rocks Bilutu Bainaimiao Arc Belt North China Block Central Asian Orogenic Belt

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Detrital Zircon U-Pb Dating of Nanshuangyashan Formation in the Jiamusi Massif, NE China and its Tectonic Implications

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1559-1579页

作者： CUI weilong ZENG Zhen ZHANG Xingzhou LIU Zhenghong WANG Shijie PU Jianbin FU Qiulin GUO Ye State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China College of Earth Sciences Jilin UniversityChangchun 130061China China Aerospace Academy of Architectural Design and Research Co. LtdBeijing 100162China

A suite of the fossil-rich marine-land interbedded strata(Nanshuangyashan Formation) is distributed at the eastern margin of the Jiamusi massif in the eastern Heilongjiang Province, NE China. The authors had recently discovered a suite of arkose beneath the marine-land interbedded strata, which overlays unconformably on the Permain granite in the eastern margin of the Jiamusi massif. The LA-ICP-MS zircon U-Pb dating indicate that all detrital zircons from the analysed four arkose samples show the four population ages of >800 Ma, 538-481 Ma, 269-250 Ma and 223-215 Ma. The former three population ages are widely recorded in the Jiamusi-Khanka massif and the Songnen massif. The later group is the minimal age population in the analyzed samples, limiting the sedimentation time of the arkoses occurred after the Late Triassic. At present, the minimal age population is not recorded in the Jiamusi massif, but the granites with the ages of 228-210 Ma are widely distributed in the Songnen-Zhangguangcai Range massif and the Khanka massif. The predominantly Permian zircons are characterized by oscillatory zoning and euhedral shapes, with variable zircon εHf(t) values(-5.5 to +11.2), indicating that they were derived from mixture sources, possibly mixed with components of the Songnen-Zhangguangcai Range massif and the Jiamusi-Khanka massif. These results, combined with regional analyses, indicate that the closing of Mudanjiang ocean and Panthalassa ocean possibly existed from Early Permian to Late Triassic.

关键词： Jiamusi massif Nanshuangyashan Formation Late Triassic detrital zircon NE China

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LessNet:Lightweight and efficient semantic segmentation for large‐scale point clouds

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IET Cyber-Systems and Robotics 2022年第2期4卷 107-115页

作者： Guoqiang Feng weilong Li Xiaolin Zhao Xuemeng Yang Xin Kong TianXin Huang Jinhao Cui Equipment Management and Unmanned Aerial Vehicle Engineering College Air Force Engineering UniversityXi'anChina Institute of Cyber‐Systems and Control Zhejiang UniversityHangzhouChina

With a wide range of applications in autonomous driving and robotics,semantic seg-mentation for large‐scale outdoor point clouds is a critical and challenging *** to the large number and irregular arrangement of point clouds,it is difficult to balance the efficiency and *** this paper,we propose LessNet,a lightweight and efficient voxel‐based method for LiDAR‐only semantic segmentation,taking advantage of cylin-drical partition and intra‐voxel feature ***,we use a cylindrical partition method to distribute the outdoor point clouds more evenly in *** better encode the voxel features,we adopt an intra‐voxel aggregation method without querying *** voxel features are further input into a lightweight and effective 3D U‐net to aggregate local features and dilate the receptive *** experiments prove the satisfied semantic segmentation performance and the improvement of each component in our proposed *** method is capable of processing more than one million point clouds at a time while retaining low latency and few ***,our method achieves comparable performance with state‐of‐the‐art approaches and out-performs all projection‐based methods on the SemanticKITTI benchmark.

关键词： semantic partition retaining

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Stiffness requirement of flexible skin for variable trailing-edge camber wing

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Science China(Technological Sciences) 2010年第4期53卷 1077-1081页

作者： YIN weilong Center for Composite Materials and Structures and Postdoctoral Station of Mechanics,Harbin Institute of Technology,Harbin 150080,China Center for Composite Materials and Structures and Postdoctoral Station of Mechanics Harbin Institute of Technology Harbin China

The method for analyzing the deformation of flexible skin under the air loads was developed based on the panel method and finite element *** deformation of flexible skin under air pressures and effects of the local deformation on the aerodynamic characteristics were *** results show that the flexible skin on the upper surface of trailing-edge will bubble under the air loads and the bubble has a powerful effect on the aerodynamic pressure near the surface of local *** the stiffness requirements for flexible skin of variable trailing-edge were given by using the Jacobs rule,i.e.,the maximum displacement of skin is not greater than 0.1% of wing *** show that the in-plane stiffness can be reduced by increasing the ratio of bending stiffness to in-plane *** the deformation of flexible skin increases with the in-plane stiffness decreasing,it depends on the bending *** the bending stiffness exceeds critical value,the deformation of flexible skin only depends on the bending stiffness and has nothing to do with the in-plane *** conclusions can be used for the structural design of flexible skin.

关键词： morphing aircraft variable trailing-edge flexible skin deformation stiffness requirement

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Hepatocyte nuclear factor 1A suppresses innate immune response by inducing degradation of TBK1 to inhibit steatohepatitis

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Genes & Diseases 2023年第4期10卷 1596-1612页

作者： Jinyong He Cong Du Xuyun Peng weilong Hong Dongbo Qiu Xiusheng Qiu Xingding Zhang Yunfei Qin Qi Zhang Cell-gene Therapy Translational Medicine Research Center The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510630China Biotherapy Center The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510630China Guangdong Province Key Laboratory of Liver Disease Research The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510630China Molecular Cancer Research Center School of Medicine Sun Yat-sen UniversityShenzhenGuangdong 518107China Department of Emergency The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong 510630China

Non-alcoholic steatohepatitis(NASH),a progressive form of non-alcoholic fatty liver disease(NAFLD),is characterised by chronic liver inflammation,which can further prog-ress into complications such as liver cirrhosis and NASH-associated hepatocellular carcinoma(HCC)and therefore has become a growing health problem *** type I interferon(IFN)signaling pathway plays a pivotal role in chronic inflammation;however,the molecular mechanisms underlying NAFLD/NASH from the perspective of innate immune response has not yet been fully *** this study,we elucidated the mechanisms of how innate im-mune response modulates NAFLD/NASH pathogenesis,and demonstrated that hepatocyte nu-clear factor-1alpha(HNF1A)was suppressed and the typeⅠIFN production pathway was activated in liver tissues of patients with NAFLD/*** experiments suggested that HNF1A negatively regulates the TBK1-IRF3 signaling pathway by promoting autophagic degra-dation of phosphorylated-TBK1,which constrains IFN production,thereby inhibiting the activa-tion of type I IFN ***,HNF1A interacts with the phagophore membrane protein LC3 through its LIR-docking sites,and mutations of LIRs(LIR2,LIR3,LIR4,and LIRs)block the HNF1A-LC3 *** addition,HNF1A was identified not only as a novel autop-hagic cargo receptor but also to specifically induce K33-linked ubiquitin chains on TBK1 at Lys670,thereby resulting in autophagic degradation of ***,our study illustrates the crucial function of the HNF1A-TBK1 signaling axis in NAFLD/NASH pathogenesis via cross-talk between autophagy and innate immunity.

关键词： HNF1A IFN signaling pathway Innate immunity NAFLD TBK1

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Optimization method to obtain appropriate spacing parameters for crop cultivation

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International Journal of Agricultural and Biological Engineering 2020年第1期13卷 146-152页

作者： weilong Ding Chengcheng Fan Lifeng Xu Tao Xie Yang Liu Zangxin Wan Nelson Max College of Computer Science&Technology Zhejiang University of TechnologyHangzhou 310026China Department of Computer Science University of CaliforniaDavisCA 95616USA

Considering the time-consuming and tedious work of the current methods to control plant layout,which is mostly based on expert experience or field trials,we propose an algorithm to optimize and simulate a planting layout based on a virtual plant model and an optimization algorithm.A functional-structural plant model,which combines the structure and physiological function of plants,is used to construct a planting *** planting and row spacing are set as the genetic factors and the chromosomes of the genetic algorithm are encoded with a binary *** photosynthetic yield of the unit planting area is denoted as the fitness *** using this method,the intercropping of maize and soybean plants and the sole cropping of rice plants are *** results show that the proposed method can obtain a high yield planting plan.

关键词： functional-structural plant models genetic algorithm spacing optimization plant spatial distribution

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Research on active defense decision-making method for cloud boundary networks based on reinforcement learning of intelligent agent

High-Confidence Computing

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High-Confidence Computing 2024年第2期4卷 50-61页

作者： Huan Wang Yunlong Tang Yan Wang Ning Wei Junyi Deng Zhiyan Bin weilong Li School of Computer Science and Technology Guangxi University of Science and TechnologyLiuzhou 545000China Liuzhou Key Laboratory of Big Data Intelligent Processing and Security Liuzhou 545000China Guangxi Education System Network Security Monitoring Center Liuzhou 545000China Center of Graphics and Information Guangxi ECO-Engineering Vocational&Technical CollegeLiuzhou 545004China

The cloud boundary network environment is characterized by a passive defense strategy,discrete defense actions,and delayed defense feedback in the face of network attacks,ignoring the influence of the external environment on defense decisions,thus resulting in poor defense ***,this paper proposes a cloud boundary network active defense model and decision method based on the reinforcement learning of intelligent agent,designs the network structure of the intelligent agent attack and defense game,and depicts the attack and defense game process of cloud boundary network;constructs the observation space and action space of reinforcement learning of intelligent agent in the non-complete information environment,and portrays the interaction process between intelligent agent and environment;establishes the reward mechanism based on the attack and defense gain,and encourage intelligent agents to learn more effective defense *** designed active defense decision intelligent agent based on deep reinforcement learning can solve the problems of border dynamics,interaction lag,and control dispersion in the defense decision process of cloud boundary networks,and improve the autonomy and continuity of defense decisions.

关键词： Active defense decision-making Cloud boundary network security Intelligent agent reinforcement learning Offensive and defensive game

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