检索结果-南通市图书馆

Self-standing hollow porous Co/a-WO_(x)nanowire with maximum Mott-Schottky effect for boosting alkaline hydrogen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第4期16卷 4603-4611页

作者： jianpo chen Jianping Zheng Weidong He Haikuan Liang Yan Li Hao Cui chengxin Wang School of Materials Science and Engineering The Key Laboratory of Low-Carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yatsen UniversityGuangzhou 510275China

The sufficient utilization of Mott-Schottky effect for boosting alkaline hydrogen evolution reaction(HER)depends upon scale minimizing of interface components and exposure maximizing of Mott-Schottky ***,a self-standing porous tubular Mott-Schottky electrocatalyst is constructed by a self-template etching strategy,where amorphous WO_(x)(a-WO_(x))nano-matrix connects Co *** novel“Janus”electrocatalyst maximizes the Mott-Schottky effect by not only providing a highly exposed micro interface,but also simultaneously accelerating the water dissociation and optimizing the hydrogen desorption *** findings and theoretical calculations reveal that Co/a-WO_(x)Mott-Schottky heterointerface triggers the electron redistribution and a build-in electric field,which can not only optimize the adsorption energy of the reaction intermediates,but also facilitate the charge ***,Co/a-WO_(x)requires an overpotential of only 36.3 mV at 10 mA·cm^(−2)and shows a small Tafel slope of 53.9 mV·dec^(−1)as well as an excellent 200-h long-term *** work provides a novel design strategy for maximizing the Mott-Schottky effect on promoting alkaline HER.

关键词： Mott-Schottky effect electrocatalyst self-template etching hydrogen evolution reaction(HER) electron redistribution

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

“‘民间信仰与中国社会’编纂研讨会”综述

文史哲 2006年第1期 163-167页

作者：陈建坡山东大学历史文化学院山东济南250100

“民间信仰与中国社会研究”是2005年3月正式立项的教育部重大攻关课题之一。这一课题是以山东大学历史文化学院路遥先生为首席专家,由海内外有关专家、学者组成的团队共同进行。同年6月,山东大学主持召开了“‘民间信仰与中国社会’编... 详细信息

“民间信仰与中国社会研究”是2005年3月正式立项的教育部重大攻关课题之一。这一课题是以山东大学历史文化学院路遥先生为首席专家,由海内外有关专家、学者组成的团队共同进行。同年6月,山东大学主持召开了“‘民间信仰与中国社会’编纂研讨会”。出席会议的除山东大学历史文?（共5页)

关键词：中国社会科学院民间信仰山东大学历史文化世界宗教社会研究教育部研究所近代史

在线全文

学校读者我要写书评

暂无评论

建国初期我国多党合作制度存废问题探析

山东青年政治学院学报 2015年第5期31卷 60-64页

作者：陈建坡山东青年政治学院济南250103

中国共产党领导的多党合作和政治协商制度是我国的一项基本政治制度,也是具有中国特色的社会主义政党制度。建国初期,党内外存在着民主党派存废即多党合作制度存废的争论。争论反映了对民主党派和多党合作制度性质和使命、历史和现实的... 详细信息

中国共产党领导的多党合作和政治协商制度是我国的一项基本政治制度,也是具有中国特色的社会主义政党制度。建国初期,党内外存在着民主党派存废即多党合作制度存废的争论。争论反映了对民主党派和多党合作制度性质和使命、历史和现实的不同认识,其结果体现着中共对历史传统的尊重和现实策略的考量。多角度系统分析争论的原因,将有助于加深对多党合作制度合理性、合法性的认识,有助于对其所蕴含的政治原则和政治理念的理解。

关键词：多党合作民主党派存废问题

Profile of Dr. Songlin chen

在线全文

学校读者我要写书评

暂无评论

Science China Life Sciences 2024年第10期67卷 2062-2063页

作者： chen, Songlin Yellow Sea Fisheries Res Inst Qingdao Peoples R China

For decades, Dr. chen has been engaged in fish germplasm preservation, sex control and research focusing on molecular breeding for disease resistance. He discovered the first sex-specific molecular marker of fish(chen et al., 2007),deciphered the first fish genome(Chinese tongue sole) in China, revealed the sex determination mechanism in fish(chen et al., 2014), and created molecular sex control technology. He also discovered the molecular mechanism of metamorphosis in flatfish(Shao et al., 2017) and developed China's first fish disease-resistant breeding gene chip, “YUXIN No.1”.

关键词： TURBOT SCOPHTHALMUS-MAXIMUS GENOMIC SELECTION JAPANESE FLOUNDER SEX-CHROMOSOME CELL-LINE CRYOPRESERVATION EVOLUTION EMBRYOS

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

煤制天然气经济与技术分析

广东化工 2015年第7期42卷 76-77页

作者：陈建坡杜翔中石化洛阳工程有限公司工艺系统部河南洛阳471000

介绍了煤制天然气的技术路线,分析了市场需求、生产成本。煤制天然气与进口SNG、进口增量LNG和进口LPG相比,具有价格优势。按照全生命周期评价方法,分析煤制天然气项目的碳排放和能耗,燃煤发电路线优于常规煤制天然气,应加快研发一步法... 详细信息

介绍了煤制天然气的技术路线,分析了市场需求、生产成本。煤制天然气与进口SNG、进口增量LNG和进口LPG相比,具有价格优势。按照全生命周期评价方法,分析煤制天然气项目的碳排放和能耗,燃煤发电路线优于常规煤制天然气,应加快研发一步法煤制天然气工艺,提高综合能效。

关键词：煤制天然气经济评价全生命周期评价

Effect of Reclamation on the Groundwater-Lake Water Interaction in chen Lake

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2024年第3期35卷 1083-1086页

作者： Kun Lei Teng Ma Liuzhu chen Zhenxing Li Yu chen School of Environmental Studies State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan 430078China

0 INTRODUCTION To relieve the short supply of suitable land for residing,cultivating,and commerce,it is accepted to reclaim land from lakes,river estuaries,and coastal regions in many countries(Mancini et al.,2020).The large-scale reclamation activities have an irreversible effect on the mico-geomorphology and hydrodynamic system of seasonally flooded areas(Zhang et al.,2019;Yu et al.,2018).For example,coastal regions reclaimed extended the groundwater flow paths,as well as created groundwater level rise,resulting in water-logging in the reclaimed area(Hu et al.,2008).Similar changes in groundwater flow systems may alter groundwater-lake water interactions,and it can ultimately affect the water cycle in the lake ***,such detailed studies are presently *** addition,natural exchanges between the lake and groundwater systems can be strongly affected by physical hydrological processes(Javadzadeh et al.,2020),chemical properties(Kamtchueng et al.,2015),and bioto behavior(Hancock et al.,2005).

关键词： groundwater coastal logging

Meridional deflection of global eddy propagation derived from tandem altimetry: Mechanism and implication

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2024年第3期67卷 811-825页

作者： Ge chen Xiaoyan chen Frontiers Science Center for Deep Ocean Multispheres and Earth System School of Marine TechnologyOcean University of ChinaQindao 266100China Laboratory for Regional Oceanography and Numerical Modeling Laoshan LaboratoryQindao 266237China

A common view on meridional deflection of eddy propagation is poleward for cyclones and equatorward for anticyclones. This widely accepted polarity-sensitive pattern has been increasingly undermined given that it is systematically violated on both zonal and regional scales as recently reported. Here, we approach the problem by exploring these violations in terms of eddy effects of spatiotemporal geostrophy, thermal fading, and flow dragging, yielding the following main conclusions.(1) The polarity-dependent deflection discrepancy is a pseudo feature resulting from a biased fit to the normalized eddy tracks which are spatially asymmetric(though azimuthally symmetric) between the two signs;Instead, the primary pattern of eddy deflection appears to be geographically correlated and polarity independent.(2) Geostrophic adjustment plays a critical role in defining the meridional movement of an eddy. Specifically, a consistent poleward(equatorward) trajectory bending of spatially(temporally) ageostrophic eddies is observed irrespective of their polarity.(3) The mechanism of eddy deflection is also determined by its zonal propagation direction. Westward propagating eddies are substantially affected by thermal fading, while opposite ones by flow dragging. A realistic and comprehensive understanding of eddy deflection mechanisms serves as a significant contribution to the prediction of eddy trajectory, and the protection of ocean environment.

关键词： Mesoscale eddies Eddy propagation Eddy meridional deflection Satellite observation Geostrophic adjustment

A refined representation method of the particle size distribution curve based on grading entropy

在线全文

学校读者我要写书评

暂无评论

Particuology 2024年第5期88卷 302-311页

作者： Xing Li Qun chen Zhaozhao Liu cheng Zhou chen Wang chen chen State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China

The particle size distribution(PSD)curve is an important expression of the basic properties of the *** characteristic parameters such as median particle size D_(50),effective particle size D_(10),and some combinations of characteristic parameters can only represent some points of the PSD curve,failing to represent all information of the PSD *** this paper,a fraction characteristic parameter F that could reflect the fraction size variation of the PSD curve was introduced based on grading *** a new presentation method of the A-B-F three parameters was proposed for a refined representation of the PSD *** was found that the newly constructed model not only better represents the differences in the width of PSD curves but also has a higher sensitivity than the A-B two-parameter model proposed by Lő*** PSD curves with similar distributions,the new presentation method has a higher degree of discrimination than that of the D_(50)-C_(u)-C_(c) three-parameter or the four-parameter combination G_(c) proposed by ***,the application of this new method in describing the spatial nonuniformity distribution of depositions and predicting the soil hydraulic conductivity was *** research results can provide a reference for the refined representation of PSD curves.

关键词： Grading entropy Particle size distribution curve Refined representation

Track correlation algorithm based on CNN-LSTM for swarm targets

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

Journal of Systems Engineering and Electronics 2024年第2期35卷 417-429页

作者： chen Jinyang WANG Xuhua chen Xian Research Institute for National Defense Engineering Academy of Military SciencesLuoyang 471023China Information Engineering University Zhengzhou 450001China School of Computer Science and Technology Xidian UniversityXi’an 710071China

The rapid development of unmanned aerial vehicle(UAV) swarm, a new type of aerial threat target, has brought great pressure to the air defense early warning system. At present, most of the track correlation algorithms only use part of the target location, speed, and other information for *** this paper, the artificial neural network method is used to establish the corresponding intelligent track correlation model and method according to the characteristics of swarm ***, a route correlation method based on convolutional neural networks (CNN) and long short-term memory (LSTM)Neural network is designed. In this model, the CNN is used to extract the formation characteristics of UAV swarm and the spatial position characteristics of single UAV track in the formation,while the LSTM is used to extract the time characteristics of UAV swarm. Experimental results show that compared with the traditional algorithms, the algorithm based on CNN-LSTM neural network can make full use of multiple feature information of the target, and has better robustness and accuracy for swarm targets.

关键词： track correlation correlation accuracy rate swarm target convolutional neural network(CNN) long short-term memory(LSTM)neural network