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DIGNN-A:Real-Time Network Intrusion Detection with Integrated Neural Networks Based on Dynamic Graph

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Computers, Materials & Continua 2025年第1期82卷 817-842页

作者： Jizhao liu Minghao Guo College of Computer Zhongyuan University of TechnologyZhengzhou450007China

The increasing popularity of the Internet and the widespread use of information technology have led to a rise in the number and sophistication of network attacks and security *** detection systems are crucial to network security,playing a pivotal role in safeguarding networks from potential ***,in the context of an evolving landscape of sophisticated and elusive attacks,existing intrusion detection methodologies often overlook critical aspects such as changes in network topology over time and interactions between *** address these issues,this paper proposes a real-time network intrusion detection method based on graph neural *** proposedmethod leverages the advantages of graph neural networks and employs a straightforward graph construction method to represent network traffic as dynamic graph-structured ***,a graph convolution operation with a multi-head attention mechanism is utilized to enhance the model’s ability to capture the intricate relationships within the graph structure ***,it uses an integrated graph neural network to address dynamic graphs’structural and topological changes at different time points and the challenges of edge embedding in intrusion detection *** edge classification problem is effectively transformed into node classification by employing a line graph data representation,which facilitates fine-grained intrusion detection tasks on dynamic graph node feature *** efficacy of the proposed method is evaluated using two commonly used intrusion detection datasets,UNSW-NB15 and NF-ToN-IoT-v2,and results are compared with previous studies in this *** experimental results demonstrate that our proposed method achieves 99.3%and 99.96%accuracy on the two datasets,respectively,and outperforms the benchmark model in several evaluation metrics.

关键词： Intrusion detection graph neural networks attention mechanisms line graphs dynamic graph neural networks

Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi Yu Faith Teo En Ning Chang liu Yu-Chi liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong Loo Lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina

Research progress of catalysts for direct coal liquefaction

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Journal of Energy Chemistry 2025年第1期100卷 481-497页

作者： Wei Song Penggao liu Xinyue Chen Ting Wang Chunrong He Rui Hao Kaiyu liu State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University College of Chemistry and Chemical Engineering Henan Polytechnic University Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical Engineering Central South University

Coal direct liquefaction technology is a crucial contemporary coal chemical technology for efficient and clean use of coal resources. The development of direct coal liquefaction technology and the promotion of alternative energy sources are important measures to guarantee energy security and economic security. However, several challenges need to be addressed, including low conversion rate, inadequate oil yield, significant coking, demanding reaction conditions, and high energy consumption. Extensive research has been conducted on these issues, but further exploration is required in certain aspects such as pyrolysis of macromolecules during the liquefaction process, hydrogen activation, catalysts' performance and stability, solvent hydrogenation, as well as interactions between free radicals to understand their mechanisms better. This paper presents a comprehensive analysis of the design strategy for efficient catalysts in coal liquefaction, encompassing the mechanism of coal liquefaction, catalyst construction,and enhancement of catalytic conversion efficiency. It serves as a comprehensive guide for further research endeavors. Firstly, it systematically summarizes the conversion mechanism of direct coal liquefaction, provides detailed descriptions of various catalyst design strategies, and especially outlines the catalytic mechanism. Furthermore, it addresses the challenges and prospects associated with constructing efficient catalysts for direct coal liquefaction based on an understanding of their action mechanisms.

关键词： Direct coal liquefaction Catalysts Mechanism of action Solvent hydrogenation

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鄂西及湘西武陵山区金腰属植物新记录

生物资源 2018年第2期40卷 159-163页

作者：兰德庆覃瑞夏婧李刚刘虹中南民族大学武陵山区特色资源植物种质保护与利用湖北重点实验室

报道了鄂西湘西武陵山区区域内虎耳草科金腰属植物新记录种7种,其中湖北省新记录种有3种,分别为：天胡荽金腰（Chrysosplenium hydrocotylifolium *** Vaniot.）、陕甘金腰（Chrysosplenium qinlingense Jien ex ***）、毛金腰（Chrysos... 详细信息

报道了鄂西湘西武陵山区区域内虎耳草科金腰属植物新记录种7种,其中湖北省新记录种有3种,分别为：天胡荽金腰（Chrysosplenium hydrocotylifolium *** Vaniot.）、陕甘金腰（Chrysosplenium qinlingense Jien ex ***）、毛金腰（Chrysosplenium pilosum Maxim.）;湖南省新记录种4种,分别为：微子金腰（Chrysosplenium microspermum Franch）、中华金腰（Chrysosplenium sinicum Maxim）、山溪金腰（Chrysosplenium nepalense ***.）和绵毛金腰（Chrysosplenium lanuginosum *** Thoms.）。上述金腰属植物均提供了经纬度、海拔及植物照片,引证标本存放于中南民族大学植物标本馆（HSN）。

关键词：金腰属武陵山区新记录

Miyaoka-type inequalities for terminal threefolds with nef anti-canonical divisors

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Science China Mathematics 2025年第1期68卷 1-18页

作者： Masataka Iwai Chen Jiang Haidong liu Department of Mathematics Graduate School of ScienceOsaka University Shanghai Center for Mathematical Sciences & School of Mathematical Sciences Fudan University Department of mathematics Sun Yat-sen University

In this paper,we study Miyaoka-type inequalities on Chern classes of terminal projective 3-folds with nef anti-canonical *** X be a terminal projective 3-fold such that-KXis *** show that if c1（X） · c2（X）≠0,then c1（X） · c2（X） ≥ 1/252;if further X is not rationally connected,then c1（X） · c2（X） ≥ 4/5 and this inequality is *** order to prove this,we give a partial classification of such varieties along with many *** also study the nonvanishing of c1（X）dim X-2· c2（X） for terminal weak Fano varieties and prove a Miyaoka-Kawamata-type inequality.

关键词： terminal threefolds Miyaoka-type inequality boundedness

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梗阻性黄疸对大鼠肾脏AQP-3表达的影响

世界华人消化杂志 2008年第1期16卷 10-14页

作者：张德巍李云飞王勇王晟孟相真刘金钢中国医科大学附属第四医院普通外科辽宁省沈阳市110032 中国医科大学附属盛京医院肝胆外科辽宁省沈阳市110005

目的:本实验通过建立梗阻性黄疸大鼠实验模型.检测不同时间段梗阻性黄疸大鼠及对照组大鼠肾脏中AQP-3的表达.方法:成年♂Wistar大鼠40只,随机分为A、B、C、D四组(n=10),A组为梗阻性黄疸7 d实验组、B组为A组对照组、C组为梗阻性黄疸14 d... 详细信息

目的:本实验通过建立梗阻性黄疸大鼠实验模型.检测不同时间段梗阻性黄疸大鼠及对照组大鼠肾脏中AQP-3的表达.方法:成年♂Wistar大鼠40只,随机分为A、B、C、D四组(n=10),A组为梗阻性黄疸7 d实验组、B组为A组对照组、C组为梗阻性黄疸14 d组、D组为C组对照组.黄疸建立后7 d及14 d分别剖杀A、B、C和D组实验动物,Western blotting检测各组大鼠肾脏AQP-3的表达.结果:各组大鼠血清肌酐检测结果无差异;C、D组间血尿素氮检测有显著性差异(9.23±0.70 vs 8.22±0.43,P<0.05),而其余各组间无差异:AOP-3表达在A与C组(t=7.629,P= 0.000),C与D组(t=-13.159,P=0.000),A与B组间(t=-2.310,P=0.033)有显著性差异.结论:梗阻性黄疸14 d内血清肌酐可无明显变化;梗阻性黄疸14 d时可出现尿素氮的轻度增高;梗阻性黄疸时AQP-3表达减少,并随着梗阻时间的延长,AQP-3有逐渐降低的趋势.

关键词：梗阻性黄疽急性肾功能衰竭水通道蛋白-3

Study on deformation mechanism of Ti-2Al-2.5Zr alloy tube in the flattening test

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Journal of Materials Science & Technology 2021年第31期90卷 108-120页

作者： Shengkun Wang gang jin Yuntao Wu Xiao liu gang Chen School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China Nuclear and Radiation Safety Center MEE54#Beijing 100082China School of Chemical Engineering Sichuan UniversitySichuan 610065China Nuclear Power Institute of China ChengduSichuan 610015China

The flattening test,using one pair paralleled plates to flatten tube structure radially,is generally employed to examine the ductility of tube used in once through steam generator(OTSG).This study focuses on the stress condition and deformation mechanism analysis on the concentrated stress regions of Ti-2 Al-2.5 Zr alloy tube during the flattening ***,the finite element analysis was performed using the commercial software ABAQUS to determine the stress ***,the Electron BackScattered Diffraction(EBSD)was implemented to observe the microstructure evolution of Ti-2 Al-2.5 Zr ***,Schmid law was employed to analyze the activated deformation mechanism under condition of the complex *** was found that the condition of the complex stress in stress concentration regions,including tension and compression regions,can be simplified into two directional stresses *** grains whose c-axis is nearly towards TD and ND,the strain is mainly accommodated by prismatic slip,whereas in grains whose c-axis deviates about 45°from ND to TD mainly by basal ***{10-12}extensive twin and corresponding parent grain orientation mainly relied on the stress ***,the intergranular twin pairs connected at common grain boundaries(GBs)with high strain compatibility were found at low angle GBs,which were activated under a combination of macro stress and strain compatibility effect.

关键词： Ti-2Al-2.5Zr alloy tube Flattening test EBSD Stress condition Deformation mechanism Schmid factor Twin pairs Strain compatibility effect

多单元双嘧达莫胃漂浮缓释制剂的制备及其处方优化

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沈阳药科大学学报 2011年第2期28卷 105-111页

作者：惠颖朱津津杨星钢刘丹丹聂淑芳潘卫三沈阳药科大学药学院辽宁沈阳110016

目的制备多单元胃漂浮制剂双嘧达莫胃漂浮缓释微丸,并考察其体外漂浮和释放性质。方法采用挤出滚圆法制备轻质含药丸芯,底喷流化床包衣技术将乙基纤维素(EC)喷于含药丸芯表面形成缓释膜材,控制微丸的漂浮性和药物的释放特性;采用正交试... 详细信息

目的制备多单元胃漂浮制剂双嘧达莫胃漂浮缓释微丸,并考察其体外漂浮和释放性质。方法采用挤出滚圆法制备轻质含药丸芯,底喷流化床包衣技术将乙基纤维素(EC)喷于含药丸芯表面形成缓释膜材,控制微丸的漂浮性和药物的释放特性;采用正交试验设计对包衣微丸的处方进行优化和筛选,并对最佳处方进行验证试验及释放模型拟合。结果包衣液中致孔剂含量质量分数为20%、增塑剂含量质量分数为5%、包衣质量分数增加为4%时,所得微丸的体外漂浮性和缓释释放度均达到了要求。12 h微丸的漂浮率大于90%,8 h累计释放量达到85%以上,包衣微丸的释药符合一级释药模型。结论自制产品质量稳定,工艺简单可靠,所得的胃漂浮缓释微丸达到了缓释与漂浮的双重要求。

关键词：双嘧达莫胃漂浮缓释微丸挤出滚圆法流化包衣法体外漂浮性体外释放度

Multiphysics simulation and optimization of the in-situ beneficiation process of ilmenite minerals from lunar regolith

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Science China Earth Sciences 2025年第1期68卷 195-207页

作者： Peng ZHANG Xin liu Guanghui liu Wei DAI Hanzhe YANG Haibo ZHENG Zhi WANG Ran NIU Yifan BAI Yang ZHANG Chengbao liu Ge YANG Junwei YANG Guang ZHANG Technology and Engineering Center for Space Utilization Chinese Academy of Sciences Beijing Hegong Simulation Co. Ltd

The exploration and utilization of lunar resources have become the major objectives of future lunar exploration missions. The classified collection and processing of lunar minerals is the basic prerequisite for the in-situ exploration and utilization of lunar resources. In this study, we propose a scheme for in-situ separation of magnetic minerals from lunar soils using the dry magnetic separation method. The scheme can realize the purpose of separating magnetic minerals from lunar regolith by altering the motion trajectory of lunar regolith particles with different magnetic properties. Detailed modeling of the dry magnetic separation device is conducted, and the three-dimensional distribution of magnetic parameters is calculated and analyzed. Based on the characterization and analysis of the Chang E-5's samples, the morphologies and physical parameters of lunar regolith particles are modeled and simulated. A discrete element simulation of the motion process of lunar regolith particles under multi-physical field conditions is performed, and the influences of key parameters on the beneficiation performance of lunar magnetic minerals are investigated. Our results indicate that optimal separation and beneficiation of lunar regolith particles can be achieved under specific conditions of magnetic field strength and drum speed. Additionally, we analyze the effects of lunar weak gravity conditions and the charged nature of lunar particles on the beneficiation process, showing that these factors can obviously enhance the beneficiation process of lunar ilmenites. This study demonstrates the feasibility of using the dry magnetic separation method for the beneficiation of magnetic minerals from lunar regolith, providing a theoretical basis for the scientific tasks of collecting, processing, and utilizing lunar mineral resources.

关键词： Lunar regolith In-situ resource utilization Magnetic separation Classified sampling