检索结果-南通市图书馆

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

湘中下石炭统测水组煤层气储层特性研究

中国煤炭地质 2010年第11期22卷 22-25页

作者：易海霞湖南省煤田地质局第二勘探队湖南株洲412003

从煤岩煤质、含气性、吸附特征、裂隙发育及渗透性等方面对湘中下石炭统测水组煤层气储层(煤储层)特性进行论述。研究表明煤储层为明显的富镜质组煤,随温度、压力的增加吸附量增大。区内煤层最大含气量为41.91m3/t,以新化芦毛江至金竹... 详细信息

从煤岩煤质、含气性、吸附特征、裂隙发育及渗透性等方面对湘中下石炭统测水组煤层气储层(煤储层)特性进行论述。研究表明煤储层为明显的富镜质组煤,随温度、压力的增加吸附量增大。区内煤层最大含气量为41.91m3/t,以新化芦毛江至金竹山一带为中心,包括芦毛江、冷水江、渣渡、金竹山等矿区,高富集区基本呈东西向展布。但受煤阶的影响,煤层内生裂隙发育程度明显低于龙潭组煤层,同时由于煤层煤体结构连通性差以及多起构造运动形成细小的煤粉常充填于构造裂隙中,降低了煤层的渗透性。针对上述煤储层特点,指出加强对具有上封下开裂隙系统以及原生结构煤和碎裂煤整层发育地区的煤层气勘探尤为重要。

关键词：煤层气煤储层测水组湘中

在线全文

学校读者我要写书评

暂无评论

教育——地位再生产的机器

中国电力教育 2009年第21期 14-16页

作者：衣海霞华东师范大学高等教育研究所

本文分析了社会分层的两种理论模式,指出功能论强调的教育的社会地位生产机制是一种理想模式;冲突论强调的教育的社会地位再生产机制则是一种现实模式,在当代社会越来越深入人心。

关键词：教育功能论冲突论

电动四驱混合动力汽车工作模式分析及关键参数设计

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

汽车技术 2015年第3期 56-62页

作者：王俊华伊海霞魏丹夏珩广汽集团汽车工程研究院

对所研发的电动四驱混合动力汽车的几种工作模式进行了分析,该车工作模式包括自动起停、制动能量回收、纯电驱动、2WD驱动和4WD驱动以及换挡辅助等。在此基础上,基于系统效率最优原则,介绍了混合动力系统关键控制参数的设计,并通过实车... 详细信息

对所研发的电动四驱混合动力汽车的几种工作模式进行了分析,该车工作模式包括自动起停、制动能量回收、纯电驱动、2WD驱动和4WD驱动以及换挡辅助等。在此基础上,基于系统效率最优原则,介绍了混合动力系统关键控制参数的设计,并通过实车转鼓试验对工作模式和设计参数进行了验证。

关键词：电动四驱混合动力汽车工作模式参数设计

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun yi Yao Liu yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Oxygen evolution reaction

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

再生聚乙烯制备3PE防腐聚乙烯专用料

现代塑料加工应用 2014年第4期26卷 22-24页

作者：仪海霞李春松张跃华常燕中国兵器工业集团第五三研究所山东济南250033

以再生聚乙烯为主要原材料制备了管道防腐聚乙烯。通过优化基体树脂及其配比,添加少量乙烯-辛烯共聚物后,制备出力学性能合乎要求的管道防腐聚乙烯专用料。通过力学性能测试,发现聚乙烯及聚乙烯专用料的拉伸断裂均发生在应力应变上升阶段。

关键词：再生聚乙烯乙烯-辛烯共聚物力学性能管道防腐聚乙烯专用料

Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 401-416页

作者： Chen Li Leilei Liang Baoshan Zhang yi Yang Guangbin Ji School of Electronic Science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration ***,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption *** top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass ***,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric *** theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ***,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of ***,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关键词： Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction

Malicious Document Detection Based on GGE Visualization

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 1233-1254页

作者： Youhe Wang yi Sun Yujie Li Chuanqi Zhou Henan Province Key Laboratory of Information Security Information Engineering UniversityZhengzhou450000China

With the development of anti-virus technology,malicious documents have gradually become the main pathway of Advanced Persistent Threat(APT)attacks,therefore,the development of effective malicious document classifiers has become particularly ***,detection methods based on document structure and behavioral features encounter challenges in feature engineering,these methods not only have limited accuracy,but also consume large resources,and usually can only detect documents in specific formats,which lacks versatility and *** address such problems,this paper proposes a novel malicious document detection method-visualizing documents as GGE images(Grayscale,Grayscale matrix,Entropy).The GGE method visualizes the original byte sequence of the malicious document as a grayscale image,the information entropy sequence of the document as an entropy image,and at the same time,the grayscale level co-occurrence matrix and the texture and spatial information stored in it are converted into grayscale matrix image,and fuses the three types of images to get the GGE color *** Convolutional Block Attention Module-EfficientNet-B0(CBAM-EfficientNet-B0)model is then used for classification,combining transfer learning and applying the pre-trained model on the ImageNet dataset to the feature extraction process of GGE *** shown in the experimental results,the GGE method has superior performance compared with other methods,which is suitable for detecting malicious documents in different formats,and achieves an accuracy of 99.44%and 97.39%on Portable Document Format(PDF)and office datasets,respectively,and consumes less time during the detection process,which can be effectively applied to the task of detecting malicious documents in real-time.

关键词： Malicious document visualization EfficientNet-B0 convolutional block attention module GGE image

Coordinated Control Strategy of New Energy Power Generation System with Hybrid Energy Storage Unit

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

Energy Engineering 2025年第1期122卷 167-184页

作者： Yun Zhang ZifenHan Biao Tian Ning Chen yi Fan School of Mechano-Electronic Engineering Xidian UniversityXi’an710071China Electric Power Control Center State Grid Gansu Electric Power CompanyLanzhou730030China Electric Power Control Center State Grid Gansu Electric Power Company Zhangye Power Supply BranchZhangye734000China

The new energy power generation is becoming increasingly important in the power *** as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,photovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting the stability of the power *** solve this problem,this paper proposes a coordinated control strategy for a newenergy power generation system with a hybrid energy storage unit based on the lithium iron phosphate-supercapacitor hybrid energy storage ***,the variational mode decomposition algorithm is used to separate the high and low frequencies of the power signal,which is conducive to the rapid and accurate suppression of the power fluctuation of the energy storage ***,the fuzzy control algorithm is introduced to balance the power between energy *** this paper,the actual data is used for simulation,and the simulation results show that the strategy realizes the effective suppression of the bus voltage fluctuation and the accurate control of the internal state of the energy storage unit,effectively avoiding problems such as overshoot and over-discharge,and can significantly improve the stability of the photovoltaic power generation systemand the stability of the Direct Current *** is of great significance to promote the development of collaborative control technology for photovoltaic hybrid energy storage units.

关键词： Photovoltaic power suppression hybrid energy storage unit variationalmodal decomposition fuzzy control power distribution control

湖南渣渡矿区南段至毛易矿区外围找煤前景分析

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

中国煤炭地质 2010年第7期22卷 12-15页

作者：易海霞隆威陈健明中南大学地学院教育部有色成矿预测重点试验室湖南长沙410000 湖南省煤田地质局第二勘探队湖南涟源417100

渣渡矿区南段—毛易矿区外围位于晏家铺含煤向斜至毛易含煤向斜之间,根据以往地质勘查资料分析,本区尚存在一些构造解释问题。结合生产矿井揭露煤层情况以及最新地质勘查资料,对该区段构造进行了重新厘定,认为金盘仑断层(F1)为本区主要... 详细信息

渣渡矿区南段—毛易矿区外围位于晏家铺含煤向斜至毛易含煤向斜之间,根据以往地质勘查资料分析,本区尚存在一些构造解释问题。结合生产矿井揭露煤层情况以及最新地质勘查资料,对该区段构造进行了重新厘定,认为金盘仑断层(F1)为本区主要控煤构造,是一条规模较大的由南东向北西的逆冲推覆构造,其下盘测水组(C1c)在区内呈现一向斜构造,为一隐伏含煤区,通过估算获得预测资源量(334)3 075万t。研究认为本区具有较好的找煤前景,其分析方法对进一步寻找煤炭资源勘查靶区具有实际意义。

关键词：金盘仑断层推覆构造测水组隐伏含煤区