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A hybrid WUDT-NAFnet for simultaneous source data deblending

Petroleum Science 2024年第3期21卷 1649-1659页

作者： Chao-Fan Ke Shao-Huan zu Jun-Xing Cao Xu-Dong Jiang Chao Li Xing-Ye liu Key Laboratory of Earth Exploration and Information Technology of Ministry of Education Chengdu University of Technology State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology College of Geophysics Chengdu University of Technology

Simultaneous source technology,which reduces seismic survey time and improves the quality of seismic data by firing more than one source with a narrow time interval,is compromised by the massive blended ***,deblending algorithms have been developed to separate this ***,deep learning(DL)has been proved its great potential in suppressing the *** most popular DL method employs neural network as a filter to attenuate the blended noise in an iterative estimation and subtraction framework(IESF).However,there are still amplitude distortion and blended noise residual problems,especially when dealing with weak signal submerged in strong *** address these problems,we propose a hybrid WUDT-NAFnet,which contains two *** first network is a wavelet based U-shape deblending transformer network(WUDTnet),incorporated into IESF as a robust regularization term to iteratively separate the blended *** second network is a nonlinear activate free network(NAFnet)designed to recover the event amplitude and further suppress the weak noise residual in *** the hybrid network,the blended noise can be separated purposefully and *** using synthetic and field seismic data demonstrate that the WUDTNAFnet outperforms traditional curvelet transform(CT)based method and the deblending transformer(DT)model in terms of ***,for field applications,the data augmentation method of bicubic interpolation is applied to mitigate the feature difference between synthetic and field ***,the trained network exhibits strong signal preservation ability in numerical field example without requiring additional training.

关键词： Simultaneous-source Deblending Deep learning Transformer

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Interface interaction between SiO_(2) and magnetite under high temperature:particle migration and inhibition mechanism

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Journal of Iron and Steel Research International 2024年第3期31卷 561-572页

作者： Yao-zu Wang Jian-liang Zhang Qiang Cheng Hui-qing Jiang Zheng-jian liu Yu-bo Tan School of Intelligent Science and Technology University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Advanced Engineering University of Science and Technology BeijingBeijing 100083China

Silicon is one of the main gangue components in iron ore,usually in the form of quartz and *** studies have shown that SiO_(2) has a two-sided effect on the consolidation of pellets during high-temperature oxidation roasting of ***,it is very difficult to capture the structural evolution and migration mechanisms during high-tem-perature roasting process by existing experimental ***,the influence of SiO_(2) on the consolidation behavior of magnetite was studied through a series of roasting experiments and molecular dynamic *** results show that the consolidation index and particle growth index decrease with the increase in SiO_(2) content in the *** 1573 K,the liquid phase promotes the recrystallization growth of hematite at high *** dynamic study shows that it is difficult for quartz SiO_(2) to form sintering neck with Fe_(2)O_(3).When the calcination temperature is higher than 1400 K,the Fe_(2)O_(3)-Fe_(2)SiO_(4) system produces a considerable sintering neck structure after *** atomic migration ability of Fe_(2)SiO_(4) is much higher than that of Fe_(2)O_(3).The higher atomic migration ability of Fe_(2)SiO_(4) is the main reason for the formation of the sintering neck.

关键词： Sintering neck Crystal growth Consolidation Molecular dynamics SiO_(2)

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Sparse convolutional model with semantic expression for waste electrical appliances recognition

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Science China(Technological Sciences) 2024年第9期67卷 2881-2893页

作者： han HongGui liu YiMing LI FangYu DU YongPing Faculty of Information Technology Beijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Computational Intelligence and Intelligent System Beijing 100124China Engineering Research Center of Digital Community Ministry of EducationBeijing 100124China Beijing Artificial Intelligence Institute and Beijing Laboratory for Intelligent Environmental Protection Beijing 100124China

Deep neural networks play an important role in the recognition of waste electrical appliances. However, deep neural network components still lack reliability in decision-making features. To address this problem, a sparse convolutional model with semantic expression(SCMSE) is proposed. First, a low-rank sparse semantic expression component, combining the benefits of residual networks and sparse representation, is adapted to enhance sparse feature extraction and semantic expression. Second, a reliable network architecture is obtained by iterating the optimal sparse solution, enhancing semantic expression. Finally, the results of visualization experiments on the waste electrical appliances dataset demonstrate that the proposed SCMSE can obtain excellent semantic performance.

关键词： sparse convolutional model deep neural network semantic expression visualization computer vision

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General-purpose DNA computation

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Science China Chemistry 2024年第7期67卷 2134-2135页

作者： Junlan liu Da han Institute of Molecular Medicine and Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine Renji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127China Zhejiang Cancer Hospital Hangzhou Institute of Medicine(HIM)Chinese Academy of SciencesHangzhou 310022China

Despite the tremendous advancement in the robustness and functionality of DNA-based computing systems throughout the past decade[1-4],reconfiguration of typical DNA computing circuits for diverse tasks is still hindered by the requirement of a priori knowledge about underlying circuit *** addition,the type of algorithms that can be implemented by a DNA integrated circuit(DIC)was limited to a small number,therefore limiting the computing power of DIC[1-4].

关键词： computing knowledge limiting

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Targeting Nrf2 signaling in dry eye

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International Journal of Ophthalmology(English edition) 2024年第10期17卷 1911-1920页

作者： Yu-Nuo Zhang Wei-Jie Ouyang Jiao-Yue Hu zu-Guo liu Xiamen University Affiliated Xiamen Eye Center Fujian Provincial Key Laboratory of Ophthalmology and Visual ScienceFujian Engineering and Research Center of Eye Regenerative MedicineEye Institute of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen 361005Fujian ProvinceChina Department of Ophthalmology the First Affiliated Hospital of University of South ChinaHengyang 421001Hunan ProvinceChina Department of Ophthalmology Xiang’an Hospital of Xiamen UniversityXiamen 361005Fujian ProvinceChina

Dry eye,the most common ocular surface disease,can cause ocular surface tissue damage and discomfort symptoms and seriously affect people’s quality of *** etiology of dry eye is diverse,and its pathogenesis is *** oxidative stress reaction is considered to be among the important factors in the pathogenesis of dry ***,activating the antioxidant system has a potential therapeutic effect on dry *** factor erythroid 2-related factor 2(Nrf2)signaling pathway is considered the most important antioxidant pathway in the *** activation of the Nrf2 signaling pathway and its interaction with other pathways are important mechanisms to prevent the occurrence and development of dry *** review describes the structure and function of Nrf2,summarizes the changes in the oxidative stress response in dry eye,focuses on the potential mechanism of the Nrf2 signaling pathway in the treatment of dry eye,and,finally,summarizes the drugs that activate the Nrf2 signaling pathway in the treatment of dry eye.

关键词： nuclear factor erythroid 2-related factor 2 Keap1 dry eye oxidative stress

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Modeling Method of C/C-ZrC Composites and Prediction of Equivalent Thermal Conductivity Tensor Based on Asymptotic Homogenization

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工程与科学中的计算机建模(英文) 2024年第1期138卷 391-410页

作者： Junpeng Lyu Hai Mei Liping zu Lisheng liu Liangliang Chu Department of Mechanics and Engineering Structure Wuhan University of TechnologyWuhan430070China Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics Wuhan University of TechnologyWuhan430070China

This article proposes a modeling method for C/C-ZrC composite *** to the superposition of Gaussian random field,the original gray model is obtained,and the threshold segmentation method is used to generate the C-ZrC inclusion ***,the fiber structure is added to construct the microstructure of the three-phase plain weave *** reconstructed inclusions can meet the randomness of the shape and have a uniform *** an algorithm based on asymptotic homogenization and finite element method,the equivalent thermal conductivity prediction of the microstructure finite element model was carried out,and the influence of component volume fraction on material thermal properties was *** sensitivity of model parameters was studied,including the size,mesh sensitivity,Gaussian complexity,and correlation length of the RVE model,and the optimal calculation model was *** results indicate that the volume fraction of the inclusion phase has a significant impact on the equivalent thermal conductivity of the *** the volume fraction of carbon fiber and ZrC increases,the equivalent thermal conductivity tensor gradually *** model can be used to explore the impact of materialmicrostructure on the results,and numerical simulations have studied the relationship between structure and performance,providing the possibility of designing microstructure based on performance.

关键词： 3D reconstruction randomheterogeneous media microstructure asymptotic homogenization effective properties

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COVID-19 vaccines and beyond

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Cellular & Molecular Immunology 2024年第3期21卷 207-209页

作者： Yiyuan liu Danying Li Jiahuai han State Key Laboratory of Cellular Stress Biology Innovation Center for Cell BiologySchool of Life SciencesXiamen UniversityXiamenFujianChina Laboratory Animal Center Xiamen UniversityXiamenFujianChina Research Unit of Cellular Stress of CAMS Cancer Research Center of Xiamen UniversityXiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamenFujianChina

Hundreds of vaccines have been developed worldwide for Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the cause of Coronavirus disease 2019(COVID-19),since the beginning of the *** vaccines have saved innumerable lives and contributed to partial control of the COVID-19 *** of the vaccines approved for clinical use exhibit satisfactory initial protection rates against corresponding ***,vaccine protection declines over time,with almost all vaccines falling below 50%protection after 6 months[1].In the case of natural infections,protection lasts longer,but the incidence of reinfection is also quite high.

关键词： vaccines acute beyond

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Innovations in metallurgical and materials processes:advancing liquid theory and honoring ***-jie Guo's contributions to physical chemistry in metallurgy

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Journal of Iron and Steel Research International 2024年第1期31卷 1-2页

作者： Shuai liu Jing Guo han-jie Guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China

Spanning three decades,***-jie Guo's research group has dedicated itself to exploring the fundamental theories and practical applications of physical chemistry within the realm of *** under the assumption that molecul... 详细信息

关键词： chemistry liquid complexes

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Optical coherence tomography angiography metrics in different stages of diabetic macular edema

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Eye and Vision 2024年第3期10卷 13-20页

作者： Ruyi han Ruowen Gong Wei liu Gezhi Xu Eye Institute and Department of Ophthalmology Eye and ENT Hospital of Fudan University83 Fenyang RoadShanghai200031People’s Republic of China Key Laboratory of Visual Impairment and Restoration Fudan UniversityShanghaiPeople’s Republic of China Key Laboratory of Myopia(Fudan University) Chinese Academy of Medical SciencesNational Health CommissionShanghaiPeople’s Republic of China

Background To investigate the optical coherence tomography angiography(OCTA)characteristics of diabetic macular edema(DME)at different *** This study was a cross-sectional *** diagnosed with DME were *** was classified into early,advanced,and severe *** vessel density(VD)in the superficial vascular plexus(SVP),deep vascular plexus(DVP)and foveal avascular zone(FAZ)parameters,including FAZ area,FAZ perimeter,acircularity index and foveal VD in a 300-μm-wide region around the FAZ(FD-300),were calculated by the AngioVue software.A multivariate generalized estimating equation was used to evaluate the associations between visual acuity and OCTA *** Ninety-two eyes from 74 patients with DME were included in this *** to early(P=0.006)and advanced DME(P=0.003),the acircularity index was higher in severe *** whole and parafoveal VD in the DVP decreased in eyes with severe DME compared to early DME(P=0.018,P=0.005,respectively)and advanced DME(P=0.035,P=0.012,respectively).In the multivariate generalized estimating equation,DME severity,FAZ area and foveal thickness were positively associated with worse visual acuity(P=0.001,P=0.007 and P=0.001,respectively).Conclusion Compared to early and advanced DME,severe DME showed increased irregularity in the FAZ and more extensive vessel damage in the *** severity level of DME,larger FAZ area,and increased foveal thickness could be risk factors for poor visual *** registration The protocol was published in the Chinese Clinical Trial Registry(ChiCTR2000033082).

关键词： Optical coherence tomography angiography Diabetic macular edema Vessel density Acircularity index

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Evaluation and Projection of Population Exposure to Temperature Extremes over the Beijing−Tianjin−Hebei Region Using a High-Resolution Regional Climate Model RegCM4 Ensemble

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Advances in Atmospheric Sciences 2024年第6期41卷 1132-1146页

作者： Peihua QIN Zhenghui XIE Rui han Buchun liu State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences(CAAS)Beijing 100081China

Temperature extremes over rapidly urbanizing regions with high population densities have been scrutinized due to their severe impacts on human safety and *** of all,the performance of the regional climate model RegCM4 with a hydrostatic or non-hydrostatic dynamic core in simulating seasonal temperature and temperature extremes was evaluated over the historical period of 1991–99 at a 12-km spatial resolution over China and a 3-km resolution over the Beijing−Tianjin−Hebei(JJJ)region,a typical urban agglomeration of *** of spatial distributions of temperature extremes over the JJJ region using RegCM4 with hydrostatic and non-hydrostatic cores showed high spatial correlations of more than 0.8 with the *** a warming climate,temperature extremes of annual maximum daily temperature(TXx)and summer days(SU)in China and the JJJ region showed obvious increases by the end of the 21st century while there was a general reduction in frost days(FD).The ensemble of RegCM4 with different land surface components was used to examine population exposure to temperature extremes over the JJJ *** exposure to temperature extremes was found to decrease in 2091−99 relative to 1991−99 over the majority of the JJJ region due to the joint impacts of increases in temperature extremes over the JJJ and population decreases over the JJJ region,except for downtown ***,changes in population exposure to temperature extremes were mainly dominated by future population ***,we quantified changes in exposure to temperature extremes with temperature increase over the JJJ *** study helps to provide relevant policies to respond future climate risks over the JJJ region.

关键词： CMIP6 convection-permitting population exposure RegCM4 temperature extremes

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