检索结果-南通市图书馆

Research 2024年第2期2023卷 691-702页

作者： Zhongjie Li chao Yang Qin Zhang geng Chen Jingyuan Xu Yan Peng Hengyu Guo School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444P.R.China Institute of Artificial Intelligence Shanghai UniversityShanghai 200444P.R.China National Engineering Research Center of Turbo-Generator Vibration School of Energy and EnvironmentSoutheast UniversityNanjing 210096P.R.China institute of Microstructure Technology Karlsruhe Institute of TechnologyKarlsruhe 76344Germany Shanghai Artificial Intelligence Laboratory Shanghai 200444P.R.China Department of Applied Physics Chongqing UniversityChongqing 400044P.R.China

The influence of a mechanical structure's volume increment on the volume power density (VPD) of triboelectric nanogenerators (TENGs) is often neglected when considering surface charge density and surface power density. This paper aims to address this gap by introducing a standardized VPD metric for a more comprehensive evaluation of TENG performance. The study specifically focuses on 2 frequency-up mechanisms, namely, the integration of planetary gears (PG-TENG) and the implementation of a double-cantilever structure (DC-TENG), to investigate their impact on VPD. The study reveals that the PG-TENG achieves the highest volume average power density, measuring at 0.92 W/m^(3). This value surpasses the DC-TENG by 1.26 times and the counterpart TENG by a magnitude of 69.9 times. Additionally, the PG-TENG demonstrates superior average power output. These findings introduce a new approach for enhancing TENGs by incorporating frequency-up mechanisms, and highlight the importance of VPD as a key performance metric for evaluating TENGs.

关键词： increment neglected considering

有机肥配施化肥对柔毛淫羊藿产量和品质的影响

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

中国中药杂志 2024年第11期49卷 2871-2881页

作者：赖锟阳肖建才万修福范蕊闫滨滨康传志孙楷吕朝耕柯潇何刚张燕郭兰萍广东药科大学中药学院广东广州510006 中国中医科学院中药资源中心道地药材品质保障与资源持续利用全国重点实验室北京100700 农业农村部中药材生物学与栽培重点实验室北京100700 德兴市中医研究院试验培训基地江西德兴334220 四川康弘中药材种植有限公司四川成都610037

探究不同比例有机肥和化肥配施对柔毛淫羊藿产量和品质的影响,为柔毛淫羊藿的高产优质栽培提供科学的施肥依据。该试验采用田间小区试验,以CK(不施肥)为对照,设置5个不同比例有机肥和化肥配施处理组,OF0(100%化肥)、OF25(25%有机肥配施)... 详细信息

探究不同比例有机肥和化肥配施对柔毛淫羊藿产量和品质的影响,为柔毛淫羊藿的高产优质栽培提供科学的施肥依据。该试验采用田间小区试验,以CK(不施肥)为对照,设置5个不同比例有机肥和化肥配施处理组,OF0(100%化肥)、OF25(25%有机肥配施)、OF50(50%有机肥配施)、OF75(75%有机肥配施)和OF100(100%有机肥),测定不同施肥模式对柔毛淫羊藿农艺性状、产量、有效成分含量、养分积累量及土壤理化的影响,并采用CRITIC权重法对药材产量及品质进行综合评价。结果发现各施肥处理药材产量均较CK显著增加,尽管各有机肥配施化肥处理产量略低于OF0处理,但无显著差异,表明有机肥配施化肥可以保证药材产量。随着有机肥配比的提高,药效成分朝藿定A、朝藿定B和朝藿定C呈先增后降趋势,以OF25处理含量最高,淫羊藿苷则呈不断上升趋势,以OF100处理最佳,但总体来说,总黄酮醇苷ABCI以OF25处理积累最多。CRITIC法结果显示药材情况综合得分前三的施肥处理为OF25、OF50、OF75。有机肥配施化肥有利于提高土壤的持肥能力和供肥能力,土壤指标以OF100处理最优,土壤酶活以OF75处理活性最高,同时有机肥配施化肥有助于植株对养分的吸收积累,以OF25处理促进最明显。综合不同比例有机肥配施化肥对柔毛淫羊藿产量、有效成分含量及养分积累量等指标,建议在柔毛淫羊藿生产中第一年采用25%比例(7 500 kg·hm^(-2))的有机肥和化肥配施,以促进柔毛淫羊藿产业增产提质。

关键词：柔毛淫羊藿有机肥化肥有效成分土壤理化养分吸收 CRITIC权重法

同方期刊数据库

New signature of low mass Z'in J/ψdecays

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第8期48卷 1-5页

作者： chao-Qiang geng Chia-Wei Liu Jiabao Zhang School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China Tsung-Dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute of Theoretical Physics University of Chinese Academy of SciencesBeijing 100190China

We explored a new approach to search for a low-mass Z′particle through J/ψdecays by identifying its existence through parity-violating phenomena in the isospin-violating final states ofΛΣ¯^(0)and the corresponding charge conjugated states ofΛΣ¯^(0).Our investigation centered on a generation-independent and leptophobic Z′with mass below 10 *** the present experimental conditions at Beijing Spectrometer III(BESIII)and the anticipated opportunities at the Super Tau Charm Factory(STCF),we conducted Monte-Carlo simulations to predict possible events at both ***,we foresee a substantial enhancement in the precision of the lower limit estimation ofαNP as well as a reduction in statistical uncertainty with upcoming STCF ***,it is essential to highlight that a null result in the measurement ofαNP would impose stringent constraints,requiring the Z′−q−q couplings to be in the order of 10^(−2).

关键词： Z′ parity violation J/ψ

Sedimentary architecture and distribution of intra-platform shoal in sequence framework of Permian Changxing Formation in central Sichuan Basin,SW China

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

Petroleum Exploration and Development 2023年第2期50卷 388-403页

作者： WANG Dong LIU Hong TANG Song BAI Jinhao ZHOU Gang LI Zhengyong LIANG Feng TAN Xiucheng geng chao YANG Ying State Key Laboratory of Oil and Gas Reservoir Geology and Exploration Southwest Petroleum UniversityChengdu 610500China Sichuan Natural Gas Geology Key Laboratory Southwest Petroleum UniversityChengdu 610500China Southwest Petroleum University Division of Key Laboratory of Carbonate ReservoirsCNPCChengdu 610500China Central Sichuan Oil and Gas District PetroChina Southwest Oilfield CompanySuining 629000 Research Institute of Petroleum Exploration and Development PetroChina Southwest Oilfield CompanyChengdu 610041China Gas Production Administrative Department of Northern Central Sichuan Gas District PetroChina Southwest Oilfield CompanySuining 629000China Southern Sichuan Gas District PetroChina Southwest Oilfield CompanyLuzhou 646000China

Based on the comprehensive analysis of core, thin section, logging and seismic data, this study carried out the identification and comparison of Permian Changxing Formation sequences, clarified the typical sedimentary architectures of intra-platform shoal, investigated the vertical and horizontal development and distribution of intra-platform shoal in each sequence, and thus established the sedimentary evolution model of shoal body. The study results are reflected in four ***, there are two complete third-order sequences(SQ1 and SQ2) in Changxing Formation in central Sichuan Basin. SQ1 is generally thick in the north and thin in the south, and SQ2 shows a thickness differentiation trend of “two thicknesses and three thinnesses”. Second, the Changxing Formation in central Sichuan Basin mainly develops intra-platform shoal, inter-shoal sea and intra-platform depression subfacies. In the vertical direction, the intra-platform shoal mainly presents two typical sedimentary sequences: stable superposed and high-frequency interbedded. Third, the stable superimposed sedimentary sequence is developed in the shoal belt at the edge of intra-platform depression, which is composed of two shoal-forming periods and located in the highstand systems tracts(HSTs) of SQ1 and SQ2. The high-frequency interbedded sedimentary sequence is developed in the southern shoal belt of intra-platform depression, which is composed of four shoal-forming periods and mainly located in the HST of SQ2. Fourth, during the SQ1 deposition, the intra-platform shoal was mainly developed at the edge of the intra-platform depression on the north side of the study area, and the inter-shoal sea subfacies was mainly developed on the south side. During the SQ2 deposition, the intra-platform shoal was widely developed in the area, forming two nearly parallel intra-platform shoal belts. The study results provide direction and ideas for exploration of Changxing Formation intra-platform shoal reservoirs in c

关键词： Sichuan Basin Permian Changxing Formation intra-platform shoal sequence stratigraphic framework typical sedimentary sequence sedimentary evolution model

用于稠油热采井的耐温凝胶堵剂研制与评价——以春光油田为例

在线全文

学校读者我要写书评

暂无评论

石油地质与工程 2024年第1期38卷 113-116页

作者：赵长喜程红晓耿超徐丽娜王晓东赵一潞中国石化河南油田分公司石油工程技术研究院河南南阳473132

针对河南春光油田稠油热采水平井水窜严重的问题,通过耐高温凝胶堵剂配方研究及性能评价,配套双封定位封堵工艺,实现了水平井不同水窜位置的有效封堵。所研制的耐高温凝胶堵剂,具有耐温耐盐性能好和封堵强度高的特点,耐盐1.00×10^(5)mg... 详细信息

针对河南春光油田稠油热采水平井水窜严重的问题,通过耐高温凝胶堵剂配方研究及性能评价,配套双封定位封堵工艺,实现了水平井不同水窜位置的有效封堵。所研制的耐高温凝胶堵剂,具有耐温耐盐性能好和封堵强度高的特点,耐盐1.00×10^(5)mg/L,耐温达到350℃,高温60 h后突破真空度仍保持在0.065 MPa以上,现场实施后有效延缓了稠油水平井水窜速度,改善了稠油热采水平井开发效果。

关键词：稠油热采水平井水窜凝胶堵剂

Facile synthesis of Fe/Ni bimetallic oxide solid-solution nanoparticles with superior electrocatalytic activity for oxygen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Nano Research 2015年第12期8卷 3815-3822页

作者： Lingxiao Wang Jing geng Wenhai Wang chao Yuan Long Kuai Baoyou geng College of Chemistry and Materials Science The Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Laboratoryof Molecular-Based Materials Center for Nano Science and Technology Anhui Normal University No. 1 Beijing East Road Wuhu 241000 China

懒惰的氧进化反应(OER ) 是电气化学的切开水的反应的重要一半反应。非结晶的 Fe/Ni 合成氧化物举办高活动。在这个工作，我们修改了喷雾器帮助水花的途径和获得的非结晶的 Fe-Ni-O x 稳固答案的 nanoparticles (Fe-Ni-O x -NPs) 在... 详细信息

懒惰的氧进化反应(OER ) 是电气化学的切开水的反应的重要一半反应。非结晶的 Fe/Ni 合成氧化物举办高活动。在这个工作，我们修改了喷雾器帮助水花的途径和获得的非结晶的 Fe-Ni-O x 稳固答案的 nanoparticles (Fe-Ni-O x -NPs) 在由作为原料选铁 / 镍为 acetylacetonates 而不是无机的盐的尺寸的约 20 nm。小型的 Fe-Ni-O x -NPs 被扫描电子描绘显微镜学(SEM ) ，传播电子显微镜学(TEM ) ， X 光检查衍射(XRD ) 分析，精力散的 X 光检查光谱学(EDX ) ，和 X 光检查光电子光谱学(XPS ) 。而且，电气化学的 OER 性能的调查建议小型的 Fe-Ni-O x -NPs 比大尺寸的 Fe-Ni-O x -MPs 举办更高的活动。0.315 V 的小过电位被要求获得 50 妈 / 厘米 2, 的工作当前的密度， Tafel 斜坡象 38 mV/dec 一样低。

关键词：双金属氧化物电催化活性固溶体催化合成 X-射线光电子能谱扫描电子显微镜透射电子显微镜镍

A Modeling and Probabilistic Reasoning Method of Dynamic Uncertain Causality Graph for Industrial Fault Diagnosis

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

International Journal of Automation and computing 2014年第3期11卷 288-298页

作者： Chun-Ling Dong Qin Zhang Shi-chao geng Department of Geographical Information System Shandong Normal University School of Computer Science and Engineering Beihang University Institute of Nuclear and New Energy Technology Tsinghua University

Online automatic fault diagnosis in industrial systems is essential for guaranteeing safe, reliable and efficient ***, difficulties associated with computational overload, ubiquitous uncertainties and insufficient fault samples hamper the engineering application of intelligent fault diagnosis technology. Geared towards the settlement of these problems, this paper introduces the method of dynamic uncertain causality graph, which is a new attempt to model complex behaviors of real-world systems under uncertainties. The visual representation to causality pathways and self-relied "chaining" inference mechanisms are analyzed. In particular, some solutions are investigated for the diagnostic reasoning algorithm to aim at reducing its computational complexity and improving the robustness to potential losses and imprecisions in observations. To evaluate the effectiveness and performance of this method, experiments are conducted using both synthetic calculation cases and generator faults of a nuclear power plant. The results manifest the high diagnostic accuracy and efficiency, suggesting its practical significance in large-scale industrial applications.

关键词： Fault diagnosis causality model probabilistic graphical model uncertain knowledge representation weighted logic inference.

近红外光谱技术快速检测清香型白酒大曲指标的研究

在线全文

学校读者我要写书评

暂无评论

酿酒 2024年第3期51卷 74-78页

作者：凌晨耿超马清蓉许迎子李素琴高晓娟彭福东山西杏花村汾酒厂股份有限公司山西汾阳032205

为实现清香型白酒大曲理化指标的快速检测,结合清香型白酒大曲制作工艺和相关大曲检测标准的要求,运用近红外光谱技术,建立了清香型白酒大曲水分、糖化力和液化力的快速检测模型。结果表明:通过筛选不同光谱预处理方法和波数范围,运用... 详细信息

为实现清香型白酒大曲理化指标的快速检测,结合清香型白酒大曲制作工艺和相关大曲检测标准的要求,运用近红外光谱技术,建立了清香型白酒大曲水分、糖化力和液化力的快速检测模型。结果表明:通过筛选不同光谱预处理方法和波数范围,运用偏最小二乘法(PLS)建立模型,使用内部交叉验证得到最优模型,各理化指标模型的相关系数(R2)值大于0.75线性良好,交叉验证均方根(RMSECV)预测误差较小。使用盲样对大曲各指标的模型进行外部验证,水分、糖化力和液化力的相对标准偏差分别为3.61%、5.07%和5.84%,符合生产检测的需求,可运用于清香型白酒大曲的日常检测分析。

关键词：清香型白酒大曲近红外光谱技术水分糖化力液化力模型预测

Simulation of the characteristics of low-energy proton induced single event upset

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2014年第10期57卷 1902-1906页

作者： geng chao XI Kai LIU TianQi LIU Jie Institute of Modern Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

Monte Carlo simulation results are reported on the single event upset(SEU) triggered by the direct ionization effect of low-energy proton. The SEU cross-sections on the 45 nm static random access memory(SRAM) were compared with previous research work, which not only validated the simulation approach used herein, but also exposed the existence of saturated cross-section and the multiple bit upsets(MBUs) when the incident energy was less than 1 MeV. Additionally, it was observed that the saturated cross-section and MBUs are involved with energy loss and critical charge. The amount of deposited charge and the distribution with respect to the critical charge as the supplemental evidence are discussed.

关键词：单粒子翻转低能量质子模拟静态随机存取存储器特性 MBUS 横截面

Development of advanced anion exchange membrane from the view of the performance of water electrolysis cell

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第3期90卷 348-369,I0009页

作者： chao Liu Zhen geng Xukang Wang Wendong Liu Yuwei Wang Qihan Xia Wenbo Li Liming Jin Cunman Zhang Clean Energy Automotive Engineering Center Tongji UniversityShanghai 201804China School of Automotive Studies Tongji UniversityShanghai 201804China

Green hydrogen produced by water electrolysis combined with renewable energy is a promising alternative to fossil fuels due to its high energy density with zero-carbon *** water electrolysis technologies,the anion exchange membrane(AEM) water electrolysis has gained intensive attention and is considered as the next-generation emerging technology due to its potential advantages,such as the use of low-cost non-noble metal catalysts,the relatively mature stack assembly process,***,the AEM water electrolyzer is still in the early development stage of the kW-level stack,which is mainly attributed to severe performance decay caused by the core component,i.e.,***,the review comprehensively presents the recent progress of advanced AEM from the view of the performance of water electrolysis ***,fundamental principles and critical components of AEM water electrolyzers are introduced,and work conditions of AEM water electrolyzers and AEM performance improvement strategies are *** challenges and perspectives are also analyzed.

关键词： Hydrogen Water electrolysis Anion exchange membrane Electrolysis cell