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饥饿驱动扩散对Holling-Ⅱ型捕食模型共存的影响

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吉林大学学报（理学版） 2023年第4期61卷 753-760页

作者：雷梅娟张丽娜西北师范大学数学与统计学院兰州730070

考虑齐次Neumann边界条件下,饥饿驱动扩散对Holling-Ⅱ型捕食模型共存的影响.利用特征值理论分析一致扩散和饥饿驱动扩散情形下半平凡解的稳定性,并通过对比两种扩散下半平凡解稳定性的变化,发现饥饿驱动扩散有利于物种共存.

关键词：捕食模型 Holling-Ⅱ型功能反应函数饥饿驱动扩散共存域

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正丁醇/柴油PAHs简化机理的构建与仿真

江苏大学学报（自然科学版） 2017年第5期38卷 503-508,528页

作者：王忠王鹏张美娟瞿磊江苏大学汽车与交通工程学院江苏镇江212013 无锡职业技术学院江苏无锡214121

为了探讨正丁醇/柴油碳烟的生成途径,分析了正丁醇氧化历程和PAHs(苯、萘、菲、芘)生成路径,保留了与正丁醇/柴油混合燃料PAHs生成密切相关的基元反应,对正丁醇的氧化机理和PAHs的生成机理进行了简化,并加入正庚烷简化机理,构建了由73... 详细信息

为了探讨正丁醇/柴油碳烟的生成途径,分析了正丁醇氧化历程和PAHs(苯、萘、菲、芘)生成路径,保留了与正丁醇/柴油混合燃料PAHs生成密切相关的基元反应,对正丁醇的氧化机理和PAHs的生成机理进行了简化,并加入正庚烷简化机理,构建了由73种组分和89个基元反应的正丁醇/柴油PAHs简化机理.采用简化机理对正丁醇/柴油混合燃料的反应温度等参数进行模拟,结果与反射激波管试验结果一致,验证了简化机理的可行性.在此基础上通过模拟计算,分析了正丁醇/柴油不同掺混比、当量比的PAHs生成量和生成速率随时间变化的规律.结果表明:随着正丁醇掺混比的增加,PAHs生成量和生成速率逐渐减小,峰值出现时刻推迟,总生成量的降幅依次增大;随着当量比的增大,PAHs物质的量峰值增大,峰值出现的时刻推迟.

关键词：柴油正丁醇多环芳香烃机理简化模拟

Attention Eraser and Quantitative Measures for Automated Bone Age Assessment

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Computers, Materials & Continua 2025年第1期82卷 627-644页

作者： Liuqiang Shu lei Yu College of Computer and Information Science Chongqing Normal UniversityChongqing401331China

Bone age assessment(BAA)aims to determine whether a child’s growth and development are normal concerning their chronological *** predict bone age more accurately based on radiographs,and for the left-hand X-ray images of different races model can have better adaptability,we propose a neural network in parallel with the quantitative features from the left-hand bone measurements for *** this study,a lightweight feature extractor(LFE)is designed to obtain the featuremaps fromradiographs,and amodule called attention erasermodule(AEM)is proposed to capture the fine-grained ***,the dimensional information of the metacarpal parts in the radiographs is measured to enhance the model’s generalization capability across images fromdifferent *** is trained and validated on the RSNA,RHPE,and digital hand atlas datasets,which include images from various racial *** model achieves a mean absolute error(MAE)of 4.42 months on the RSNA dataset and 15.98 months on the RHPE *** to ResNet50,InceptionV3,and several state-of-the-art methods,our proposed method shows statistically significant improvements(p<0.05),with a reduction in MAE by 0.2±0.02 years across different racial ***,t-tests on the features also confirm the statistical significance of our approach(p<0.05).

关键词： Bone age assessment attention eraser quantitative feature metacarpal bones

STIL enhances the development of lung adenocarcinoma by regulating the glycolysis pathway

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Oncology Research 2025年第1期33卷 123-132页

作者： lei WANG XIANJIN XIE Department of Respiratory Medicine Jen Ching Memorial HospitalSuzhou215300China Department of Respiratory Medicine Shandong Provincial Third HospitalJinan250010China

Background:To investigate SCL/TAL 1 interrupting locus(STIL)’s role and prognostic significance in lung adenocarcinoma(LUAD)progression,we examined STIL and E2 promoter binding factor 1(E2F1)expression and their impacts on LUAD prognosis using Gene Expression Profiling Interactive Analysis(GEPIA).Methods:Functional assays including CCK-8,wound-healing,5-ethynyl-2-deoxyuridine(EdU),Transwell assays,and flow cytometry,elucidated STIL and E2F1’s effects on cell viability,proliferation,apoptosis,and *** set enrichment analysis(GSEA)identified potential pathways,while metabolic assays assessed glucose ***:Our findings reveal that STIL and E2F1 are overexpressed in LUAD,correlating with adverse *** enhances cell proliferation,migration,and invasion,and suppresses apoptosis,activating downstream of *** E2F1 reversed the promotion effect of the STIL overexpression on cell viability and ***,STIL modulates glycolysis,influencing glucose consumption,lactate production,and energy balance in LUAD ***:Our model,incorporating STIL,age,and disease stage,robustly predicts patient prognosis,underscored STIL’s pivotal role in LUAD pathogenesis through metabolic *** comprehensive approach not only confirms STIL’s prognostic value but also highlights its potential as a therapeutic target in LUAD.

关键词： SCL/TAL1 interrupting locus(STIL) Lung adenocarcinoma E2 promoter binding factor 1 Glycolysis

Dative B–N bonds weaven toward two-dimensional purely organic materials for single crystals

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Science China Chemistry 2025年第1期68卷 12-14页

作者： Wei-lei Zhou Siwei Wang Yong Chen College of Chemistry and Materials Science Inner Mongolia Key Laboratory of Chemistry for Nature Products and Synthesis for Functional Molecules Innovation Team of Optical Functional Molecular Devices Inner Mongolia Minzu University College of Chemistry Nankai University

Molecular topology is one of the important topics to study and understand the relationship between molecular structure and properties [1]. Particularly, two-dimensional (2D) materials with extremely high surface area and ultra-thin morphology have attracted considerable attention due to their unexpected properties in materials and chemistry [2,3].

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Automatic and Rapid Throughflow-Based Optimal Design Method for Multi-Stage Axial-Flow Compressors

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Journal of Thermal Science 2025年第1期34卷 77-91页

作者： lei Fan ZHANG Xiawen JU Yaping ZHANG Chuhua Department of Fluid Machinery and Engineering School of Energy and Power EngineeringXi'an Jiaotong University Production and Environmental Department China Huaneng Group.Co.Ltd. State Key Laboratory for Strength and Vibration of Mechanical Structures Xi'an Jiaotong University

Throughflow design has the advantages of less time consumption and large optimization space,and thus is the corner stone of advanced design system of multi-stage axial-flow *** majority of relevant studies were limited to the throughflow inverse designs,and quite few works have been till now devoted to the throughflow optimal *** this work,an automatic and rapid throughflow-based optimal design method is proposed for axial-flow compressors in which a throughflow inverse design solver is embedded in optimal genetic algorithm to improve the design efficiency of axial-flow *** types of design parameters in the throughflow inverse design of axial-flow compressors,i.e.,swirl and shroud curve,are simultaneously used to optimize both the blade shape and flow *** proposed method is validated by the redesign optimization of the benchmark axial-flow compressor NASA Stage 35,and the CFD predictions show that the throughflow-based optimization leads to 1.18% efficiency benefit at design *** proposed method is then utilized to the two-dimensional throughflow optimal design of a large-scale 6.5-stage axial-flow industrial *** optimal design results are confirmed by CFD predictions,indicating that the proposed method can effectively improve the design adiabatic efficiency of the compressors by 1.09% within a few minutes on desk-top *** throughflow design implications are also obtained for advanced axial-flow industrial *** work could enhance the capability of throughflow design method and has engineering application value to explore the throughflow optimization space of multi-stage axial-flow compressors.

关键词： NASA

Boosting Photocatalytic Performance of Cu-Mn Co-doped CeO_(2) Nanoparticles for Tetracycline Degradation

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 42-48页

作者： XU Rongqi MI Jianxin WANG Shulin XU Man ZHU Li BAI lei TANG Dandan lei Yu Engineering Research Center of Environmental Materials and Membrane Technology of Hubei Province School of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Shaanxi Coal Chemical Industry Technology Research Institute Co. Ltd.Xi’an 710100China

Cu-Mn co-doped CeO_(2) photocatalyst was successfully synthesized by the sol-gel method to assess its capability in degrading *** and TEM results showed that Cu and Mn were successfully co-doped into CeO_(2) without forming heterostructure,XPS and photoelectrochemical results revealed that Mn ions doping amplified the generation of photo-induced charge carriers,while Cu ions doping significantly facilitated the interfacial charge transfer ***,the optimized Cu3Mn2CeO_(2) nanoparticles exhibited the highest TC removal efficiency,achieved a rate of 78.18%and maintained a stable cycling performance.

关键词： photocatalyst co-doped charge separation water treatment

深度学习重建算法对肺静脉CT图像质量的改善价值

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影像技术 2024年第5期36卷 45-50页

作者：陈涵潇田祥洁雷美娟中山大学附属第三医院放射科广东510000 南方医科大学口腔医院(口腔医学院) 广东510200

目的:通过对比常规自适应迭代重建算法(ASiR-V),研究基于深度学习的图像重建算法(DLIR)对左心房及肺静脉CT图像质量和诊断信心的提高。方法:回顾性纳入31例行左心房及肺静脉CT成像的患者,对其原始数据使用滤波反投影(FBP)、30%ASiR-V、7... 详细信息

目的:通过对比常规自适应迭代重建算法(ASiR-V),研究基于深度学习的图像重建算法(DLIR)对左心房及肺静脉CT图像质量和诊断信心的提高。方法:回顾性纳入31例行左心房及肺静脉CT成像的患者,对其原始数据使用滤波反投影(FBP)、30%ASiR-V、70%ASiR-V、DLIR-M(中)和DLIR-H(高)5种重建算法分别进行重建,测量左心房的CT值,计算相应背景噪声(SD)值、信噪比(SNR)值和对比噪声比(CNR)值。由2名工作多年放射科医师分别评价5组重建图像的图像质量。结果:客观评价:5组重建图像在左心房的SD值、CNR值和SNR值的差异均有统计学意义(P<0.001)。其中DLIR-H最好,FBP和30%ASiR-V、DLIR-M与70%ASiR-V无显著性差异。随DLIR重建等级增加,SD值降低,SNR值和CNR值升高。主观评价:2位放射科医师对图像质量的主观评价一致性良好(kappa值为0.814),DLIR-H表现出最佳主观图像质量分数。结论:DLIR与FBP、ASiR-V算法相比,降噪效果更明显,图像质量更好。

关键词：深度学习迭代重建滤波反投影图像质量

Adaptive-basis decomposition-based low-rank network for efficient non-uniform motion deblurring

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Optoelectronics Letters 2025年第1期21卷 43-50页

作者： CHEN lei XIONG Qingbo ZHANG Wei LI Runde School of Software Henan University School of Applied Technology China University of Labor Relations

In this study, we present a unified sparsity-driven framework that significantly enhances motion deblurring performance by integrating two key components: a custom-designed dataset and a low-rank module(LRM). This framework leverages the inherent sparsity of per-pixel blur kernels to bolster both deblurring accuracy and model interpretability. Firstly, we propose an adaptive-basis decomposition-based deblurring(ADD) approach, which constructs a tailored training dataset to enhance the generalization capacity of the deblurring network. The ADD framework adaptively decomposes motion blur into sparse basis elements, effectively addressing the intricacies associated with non-uniform blurs. Secondly, an LRM is proposed to improve the interpretability of deblurring models as a plug-and-play module, primarily designed to identify and harness the intrinsic sparse features in sharp images. A series of ablation studies have been conducted to substantiate the synergistic advantages of combining the proposed ADD with the LRM for overall improvement in deblurring efficacy. Subsequently, we empirically demonstrate through rigorous experimentation that incorporating the LRM into an existing Uformer network leads to substantial enhancement in reconstruction performance. This integration yields a sparsity-guided low-rank network(SGLRN). Operating under the overarching principle of sparsity, SGLRN consistently outperforms state-of-the-art methods across multiple standard deblurring benchmarks. Comprehensive experimental results, assessed through quantitative metrics and qualitative visual evaluations, provide compelling evidence of its effectiveness. The overall deblurring results are available at Google Drive.

关键词： Image enhancement