检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

酚醛纤维在热处理过程中微结构的变化

新型炭材料 2004年第2期19卷 124-128页

作者：刘春玲郭全贵史景利刘朗中国科学院山西煤炭化学研究所炭材料重点实验室山西太原030001

　采用热塑性酚醛树脂经熔融纺丝和酸催化固化获得酚醛纤维。借助比表面积及孔结构测定仪、IR、TG MS和XRD等揭示了酚醛纤维在炭化过程中微结构的发展。研究结果表明:在450℃～900℃的热处理过程中,850℃时BET比表面积达到最大值1040m2... 详细信息

　采用热塑性酚醛树脂经熔融纺丝和酸催化固化获得酚醛纤维。借助比表面积及孔结构测定仪、IR、TG MS和XRD等揭示了酚醛纤维在炭化过程中微结构的发展。研究结果表明:在450℃～900℃的热处理过程中,850℃时BET比表面积达到最大值1040m2/g;同时,伴随大量分解气的逸出,炭基体内部形成孔道。

关键词：酚醛纤维热处理过程微结构结构变化酚醛树脂基炭纤维

Reducing the measurement errors in nonadiabatic holonomic quantum computers

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： guo-Fu Xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors

应激状态下应用缓释维拉帕米及合用西拉普利的有益作用

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

中国新药与临床杂志 2003年第11期22卷 653-658页

作者：陶波范春玲郭冀珍上海第二医科大学瑞金医院上海市高血压研究所上海200025

目的 :探讨应激状态下缓释维拉帕米 (VerSR)及合用西拉普利 (Cil)的有益作用。方法 :5 4例原发性高血压病人 ,随机分为 3组 :VerSR组 19例(VerSR 2 4 0～ 36 0mg ,po ,qd) ,Cil组 14例 (Cil 2 .5～ 5mg ,po ,qd) ,VerSR +Cil组 2 1例 (V... 详细信息

目的 :探讨应激状态下缓释维拉帕米 (VerSR)及合用西拉普利 (Cil)的有益作用。方法 :5 4例原发性高血压病人 ,随机分为 3组 :VerSR组 19例(VerSR 2 4 0～ 36 0mg ,po ,qd) ,Cil组 14例 (Cil 2 .5～ 5mg ,po ,qd) ,VerSR +Cil组 2 1例 (VerSR 12 0～ 2 4 0mg ,po ,qd +Cil 2 .5～ 5mg ,po ,qd)。 (1)随访服药后 1,2和 4wk后坐位血压 (BP)及心率(HR) ;(2 )服药前及服药后 4wk做心算、冷压、握掌试验及运动激发试验 ,观察BP ,HR及血浆去甲肾上腺素 (NE) ,肾上腺素 (E) ,多巴胺 (DA)的变化。结果 :(1)VerSR组总有效率 93% ,Cil组总有效率77% ,VerSR +Cil组总有效率 10 0 % (P >0 .0 5 ) ;(2 )VerSR能明显降低心算试验后的BP(1.7± 0 .9/1.3± 0 .7)kPa(P <0 .0 1)、冷压试验后的BP(2 .5±1.4 /1.2± 0 .9)kPa(P <0 .0 1)及握掌试验后的收缩压 (SBP) (1.6± 1.4 )kPa(P <0 .0 1) ;Cil仅能降低握掌试验后的SBP ,(1.1± 1.4 )kPa(P <0 .0 5 ) ;VerSR +Cil则明显降低心算试验后的BP(3.0± 2 .9/2 .1± 1.1)kPa(P <0 .0 1)和HR(10± 9)次·min- 1(P <0 .0 1)、握掌试验后BP(1.8± 1.6 /1.8± 0 .9)kPa(P <0 .0 1)和HR(6± 7)次·min- 1(P <0 .0 5 )及冷压试验后的SBP(1.9± 1.8)kPa(P <0 .0 1)。Cil对运动激发试?

关键词：高血压应激维拉帕米迟效制剂西拉普利

Anomaly Detection of Controllable Electric Vehicles through Node Equation against Aggregation Attack

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第1期82卷 427-442页

作者： Jing guo Ziying Wang Yajuan guo Haitao Jiang State Grid Jiangsu Electric Power Co. Ltd.Research InstituteState Grid Corporation of ChinaNanjing211100China

The rapid proliferation of electric vehicle(EV)charging infrastructure introduces critical cybersecurity vulnerabilities to power grids *** study presents an innovative anomaly detection framework for EV charging stations,addressing the unique challenges posed by third-party aggregation *** approach integrates node equations-based on the parameter identification with a novel deep learning model,xDeepCIN,to detect abnormal data reporting indicative of aggregation *** employ a graph-theoretic approach to model EV charging networks and utilize Markov Chain Monte Carlo techniques for accurate parameter *** xDeepCIN model,incorporating a Compressed Interaction Network,has the ability to capture complex feature interactions in sparse,high-dimensional charging *** results on both proprietary and public datasets demonstrate significant improvements in anomaly detection performance,with F1-scores increasing by up to 32.3%for specific anomaly types compared to traditional methods,such as wide&deep and DeepFM(Factorization-Machine).Our framework exhibits robust scalability,effectively handling networks ranging from 8 to 85 charging ***,we achieve real-time monitoring capabilities,with parameter identification completing within seconds for networks up to 1000 *** research contributes to enhancing the security and reliability of renewable energy systems against evolving cyber threats,offering a comprehensive solution for safeguarding the rapidly expanding EV charging infrastructure.

关键词： Anomaly detection electric vehicle aggregation attack deep cross-network

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

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Imidazolium-based ionic polymers for fast and efficient anion-exchange driven capture of Cr2O72-

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yishou Wang Xiaonan Yuan Xingxing Gou Xiatian Song Xiaogang Wang ling guo Yanfeng Liu Chengfang Qiao chunsheng Zhou Yingfeng Han Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources Shaanxi Engineering Research Center for Mineral Resources Clean & Efficient Conversion and New Materials College of Chemical Engineering and Modern Materials Shangluo University Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education Xi'an Key Laboratory of Functional Supramolecular Structure and Materials College of Chemistry and Materials Science Northwest University

The pervasive issue of chromium（VI） contamination,particularly in dichromate (Cr2O2-7),resulting from unchecked industrial growth and inadequate waste management,remains a pressing concern that demands immediate and dedicated ***,we present two novel imidazolium-based ionic polymers （ImIPs）.The ImIPs boast a highly cationic structure rich in bromide（Br-） ions and exhibit remarkable porosity,facilitating the easy exchange of these ions for chromate (Cr2O2-7) through anion *** unique combination leads to exceptional performance,including a high adsorption capacity （423 mg/g）,rapid adsorption rate (75 mg g-1min-1),and a broad operational pH range （2–12）.Moreover,our material demonstrates remarkable reusability,maintaining its efficacy even after 10 cycles without significant loss of *** mechanistic studies underscore the role of ion-exchange chemistry in effectively removing dichromate by the presented ImIPs,providing strong evidence for their suitability as a robust solution to address the ongoing challenges in water *** findings represent a crucial step in developing advanced materials for tackling chromium（VI） pollution.

关键词：

Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang guo Di Lan Zirui Jia Zhenguo Gao Xuetao Shi Mukun He Hua guo Guanglei Wu Pengfei Yin College of Science Sichuan Agricultural UniversityYa’an 625014People’s Republic of China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Institute of Materials for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly ***-component interface engineering is considered an effective means to achieve high-efficiency EMW ***,interface modulation engineering has not been fully discussed and has great potential in the field of EMW *** this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal *** utilizing the different properties of different substances,rich heterogeneous interfaces are *** effectively promotes charge transfer and enhances interfacial polarization and conduction *** prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy *** minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 ***,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel ***,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments.

关键词： Electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection

Asking one mechanism in glial cells during neuroinflammation

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第4期20卷 1077-1078页

作者： Xiaoli guo Chikako Harada Takayuki Harada Visual Research Project Tokyo Metropolitan Institute of Medical ScienceTokyoJapan

Multiple sclerosis(MS),which is characterized by inflammatory demyelination in the central nervous system(CNS),is the most common neurological disease in the young adult *** autoimmune encephalomyelitis(EAE),an animal model of MS,is often used in preclinical *** data indicate that in addition to immune cells such as T cells and dendritic cells,CNS resident microglia and astrocytes play important roles in demyelinating neuroinflammation(Healy et al.,2022).In particular,microglia are key immune-competent cells that can respond to environmental *** depletion of transforming growth factor-β-activated kinase 1,a mitogen-associated protein kinase kinase kinase,in microglia is reported to reduce CNS inflammation and diminish axonal and myelin damage *** suggests that elucidating the mechanisms of microglia-specific responses during pathologies may help in the development of treatments that reduce EAE/MS disease severity(Goldmann et al.,2013).

关键词： inflammation clinical

Monogenic gene therapy for glaucoma and optic nerve injury

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 815-816页

作者： Chikako Harada Xiaoli guo Takayuki Harada Visual Research Project Tokyo Metropolitan Institute of Medical ScienceTokyoJapan

The prevalence of glaucoma, the second leading cause of global blindness, is increasing due to aging populations. In glaucoma, degeneration of the optic nerve and retinal ganglion cells(RGCs) causes visual field defec... 详细信息

关键词： visual glaucoma degeneration