检索结果-南通市图书馆

铁道建筑 2006年第4期46卷 90-91页

作者：张心磊沈阳铁路局沈阳西站沈阳110149

随着秦沈客运专线的运营,沈山线从客货混跑,逐步转变为以货为主、兼顾客车进出关的主要通道之一。区段通过能力的增加,车站通过能力的加强,是沈山线电气化改造的关键。

关键词：沈山线电气化改造

High-speed multimode fiber imaging system based on conditional generative adversarial network

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2021年第8期19卷 1-5页

作者： Zhenming Yu Zhenyu Ju xinlei zhang Ziyi Meng Feifei Yin Kun Xu State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China

The multimode fiber(MMF)has great potential to transmit high-resolution images with less invasive methods in endoscopy due to its large number of spatial modes and small core ***,spatial modes crosstalk will inevitably occur in MMFs,which makes the received images become speckles.A conditional generative adversarial network(GAN)composed of a generator and a discriminator was utilized to reconstruct the received *** conduct an MMF imaging experimental system of transmitting over 1 m MMF with a 50μm *** with the conventional method of U-net,this conditional GAN could reconstruct images with fewer training datasets to achieve the same performance and shows higher feature extraction capability.

关键词： fiber optics imaging imaging systems deep learning conditional generative adversarial network

MetaDP: a comprehensive web server for disease prediction of 16S rRNA metagenomic datasets

在线全文

学校读者我要写书评

暂无评论

Biophysics Reports 2016年第Z2期2卷 106-115页

作者： Xilin Xu Aiping Wu xinlei zhang Mingming Su Taijiao Jiang Zhe-Ming Yuan Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests Hunan Agricultural University Center for Systems Medicine Institute of Basic Medical Sciences Chinese Academy of Medical Sciences & Peking Union Medical College Suzhou Institute of Systems Medicine Suzhou Geneworks Technology Company Limited Institute of Basic Medical Sciences Chinese Academy of Medical Sciences & Peking Union Medical College

High-throughput sequencing-based metagenomics has garnered considerable interest in recent *** methods and tools have been developed for the analysis of metagenomic data. However, it is still a daunting task to install a large number of tools and complete a complicated analysis, especially for researchers with minimal bioinformatics backgrounds. To address this problem, we constructed an automated software named Meta DP for 16 S r RNA sequencing data analysis, including data quality control, operational taxonomic unit clustering, diversity analysis, and disease risk prediction ***, a support vector machine-based prediction model for intestinal bowel syndrome(IBS)was built by applying Meta DP to microbial 16 S sequencing data from 108 children. The success of the IBS prediction model suggests that the platform may also be applied to other diseases related to gut microbes, such as obesity, metabolic syndrome, or intestinal cancer, among others(http://***:7001/).

关键词： 16S rRNA Disease prediction Intestinal bowel syndrome Metagenomics

What Makes the Mundane Magical?-Magnetically Fixing Fe3O4/Sb-SnO2 Granules on Ti/IrO2-Ta2O5 for Remarkable Enhanced Electrochemical Oxidation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

What Makes the Mundane Magical?-Magnetically Fixing Fe3O4/Sb...

Effect of preload forces on multidimensional signal dynamic behaviours for battery early safety warning

中国化学会第二十次全国电化学大会

作者： Dan Shao Yuanyuan zhang Wei Lyu xinlei zhang Guoqiang Tan Wei Yan School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science & Technology Department of Environmental Engineering Xi'an Jiaotong University

Electrochemical oxidation（EO） is one of the clean and effective approaches to realize the elimination or conversion of the organic pollutants[1,2]. Because the practicability of EO technology is mainly depended on anode, the anode material with high capacity and stability performance is therefore desirable for the sustainable and highly efficient EO technology.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第5期92卷 484-498页

作者： Kuijie Li Jiahua Li xinlei Gao Yao Lu Depeng Wang Weixin zhang Weixiong Wu Xuebing Han Yuan-cheng Cao Languang Lu Jinyu Wen Shijie Cheng Minggao Ouyang School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Energy and Electricity Research Center Jinan UniversityZhuhai 519070GuangdongChina Department of Mechanical Engineering Imperial College LondonLondon.SW7:2AZ.UK

Providing early safety warning for batteries in real-world applications is *** this study,comprehensive thermal abuse experiments are conducted to clarify the multidimensional signal evolution of battery failure under various preload *** time-sequence relationship among expansion force,voltage,and temperature during thermal abuse under five categorised stages is *** characteristic peaks are identified for the expansion force,which correspond to venting,internal short-circuiting,and thermal *** particular,an abnormal expansion force signal can be detected at temperatures as low as 42.4°C,followed by battery thermal runaway in approximately 6.5 ***,reducing the preload force can improve the effectiveness of the early-warning method via the expansion ***,reducing the preload force from 6000 to 1000 N prolongs the warning time(i.e.,227 to 398 s)before thermal runaway is *** on the results,a notable expansion force early-warning method is proposed that can successfully enable early safety warning approximately 375 s ahead of battery thermal runaway and effectively prevent failure propagation with module *** study provides a practical reference for the development of timely and accurate early-warning strategies as well as guidance for the design of safer battery systems.

关键词： Lithium-ion battery Thermal runaway Preload force Expansionforce Early warning Multidimensional signal

CsPbBr3单晶薄膜制备及其X射线探测性能研究

在线全文

学校读者我要写书评

暂无评论

人工晶体学报 2021年第10期50卷 1900-1906页

作者：张欣雷王涛查钢强西北工业大学辐射探测材料与器件工信部重点实验室西北工业大学深圳研究院

X射线探测在医疗、工业无损检测、国土安全等领域具有重要意义。制备高灵敏度的X射线探测器可以降低X射线剂量,在医疗和安检中至关重要。本文系统研究了采用空间限域法制备的高质量CsPbBr3单晶薄膜,并用该薄膜制备出了性能良好的X射线... 详细信息

X射线探测在医疗、工业无损检测、国土安全等领域具有重要意义。制备高灵敏度的X射线探测器可以降低X射线剂量,在医疗和安检中至关重要。本文系统研究了采用空间限域法制备的高质量CsPbBr3单晶薄膜,并用该薄膜制备出了性能良好的X射线探测器。借助偏光显微镜、扫描电子显微镜及其配备的能谱系统和背散射电子衍射系统对薄膜的形貌、厚度、成分和取向进行了分析。研究发现所制备的单晶薄膜表面平整、光滑,元素分布均匀,晶体取向均一。利用该薄膜制备的探测器具有较高电阻率(约7.23×10~8 W·cm)和极高的灵敏度(约2 610μC·Gy-1·cm-2)。

关键词： CsPbBr3 钙钛矿单晶薄膜 X射线探测高灵敏度空间限域法

极近距离厚煤层房式采空区下综放开采覆岩破断失稳规律研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

采矿与安全工程学报 2020年第6期37卷 1180-1187页

作者：汪北方刘春保梁冰张鑫磊张晶辽宁工程技术大学矿业学院辽宁阜新123000 中国矿业大学煤炭资源与安全开采国家重点实验室江苏徐州221116 煤炭开采水资源保护与利用国家重点实验室北京100011 辽宁工程技术大学力学与工程学院辽宁阜新123000 辽宁工程技术大学土木工程学院辽宁阜新123000 辽宁工程技术大学理学院辽宁阜新123000

论文选取北祖煤矿9205工作面为研究对象,采用相似实验与理论分析相结合的研究方法构建极近距离厚煤层综放工作面开采房式采空区顶板结构模型,揭示极近距离厚煤层综放工作面开采房式采空区顶板破断失稳规律,并给出有效防控措施。研究结... 详细信息

论文选取北祖煤矿9205工作面为研究对象,采用相似实验与理论分析相结合的研究方法构建极近距离厚煤层综放工作面开采房式采空区顶板结构模型,揭示极近距离厚煤层综放工作面开采房式采空区顶板破断失稳规律,并给出有效防控措施。研究结果表明:9205工作面开采房式采空区顶板临时挤压铰接拱形断裂岩块发生逆向回转,工作面侧断裂岩块沿断裂面滑落,滑动摩擦力及覆岩重量快速转移至工作面前方房式采空区煤柱与超前支承压力叠加,煤柱突然破坏诱发顶板沿其边缘大面积切落,矿压显现剧烈。其间,工作面开采房式采空区顶板周期垮落步距较实体煤顶板略小;顶板房式采空区分布越密集,底板卸压状态越明显;顶板房式采空区煤柱群比单一煤柱底板应力集中现象显著。由此,从加强支架初撑力、提高推进速度、控制放顶强度和改变开采高度等方面提出极近距离厚煤层房式采空区下综放工作面开采顶板破断失稳来压防控措施,较好地保障了工作面安全、高效回采,为我国煤炭资源整合矿井类似条件顶板控制提供了宝贵的参考依据。

关键词：极近距离厚煤层综放开采房式采空区顶板断裂岩块强矿压显现

Study on Preparation and Properties of Cu2O/TiO2 Composite Catalysts

在线全文

学校读者我要写书评

暂无评论

Study on Preparation and Properties of Cu2O/TiO2 Composite C...

基于IEEMD与LS-SVM组合的短期风电功率多步预测方法

河南省化学会2016年学术年会

作者： xinlei zhang Juan Zhou Lin Jin Wen Luo Chunyang Li Zhenling Wang Key Laboratory of Rare Earth Functional Materials and Applications Zhoukou Normal University College of Chemistry and Chemical Engineering Zhoukou Normal University

CuO/TiO nano composite materials were prepared by impregnation reduction method. The effects of CuO/TiO nano composite materials prepared with different Cu/Ti molar ratios and concentrations of CuSO were discussed. The samples were characterized by means of X-ray diffraction(XRD), Scanning electron microscopy(SEM), UV-visible diffuse emission spectroscopy(UV-Vis). The photocatalytic activities for degradation of methyl orange under UV-light irradiation were measured. The results showed that nano CuO had regular morphology. With the increasing of TiO content, TiO mainly in the form of small particles were supported on CuO surface. With the molar ratio of Cu/Ti 1:2, 0.25 mol / L CuSO solution, the degradation rate of the CuO/TiO nanocomposites reached 92% within 180 min.

关键词： TiO2/Cu2O Impregnation reduction method Photocatalytic activity

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

电测与仪表 2020年第6期57卷 52-60页

作者：张鑫磊李根国网冀北电力有限公司检修分公司北京102488 国网北京城区供电公司北京100043

针对组合预测方法中经验模态分解(EMD)部分存在处理非线性和非稳态信号的不足,提出了一种改进的集总经验模态分解(IEEMD)与最小二乘支持向量机(LS-SVM)模型相结合的短时风电功率预测方法。该方法首先通过对加噪辅助分解方法噪声准则的研... 详细信息

针对组合预测方法中经验模态分解(EMD)部分存在处理非线性和非稳态信号的不足,提出了一种改进的集总经验模态分解(IEEMD)与最小二乘支持向量机(LS-SVM)模型相结合的短时风电功率预测方法。该方法首先通过对加噪辅助分解方法噪声准则的研究,推导出加噪方式采用正负成对形式可以有效消除分量中的残余噪声,且确定加噪幅值和分解次数采取固定值:0.014 SD和2次。然后将原始数据通过IEEMD方法分解成一系列固有模态函数,运用游程判定法进行筛选重构成高中低频三种频段,并对不同频段的分量建立LS-SVM多步预测模型,最后将预测值自适应叠加作为最终的预测结果。通过仿真实验和实测风电功率实验验证了所提方法在预测精度上具有一定优势,为短时预测方法提供了一种新思路。

关键词：风电功率多步预测 EMD IEEMD LS-SVM

在线全文

学校读者我要写书评

暂无评论

低应力流动砂土与圆桩相互作用机理试验研究

中国矿业大学学报 2020年第3期49卷 499-505页

作者：魏重洁陈育民张鑫磊河海大学岩土力学与堤坝工程教育部重点实验室土木与交通学院江苏南京210098

采用饱和悬浮砂模拟低有效应力状态下的液化土体,开展了圆管、横板和竖板的拖拽试验,研究了低有效应力条件下砂土侧向扩展时圆桩的受力机理.结果表明:桩身作用力由径向阻力及土体对桩身的黏滞剪切力组成,这两种力均随着砂土侧向位移的... 详细信息

采用饱和悬浮砂模拟低有效应力状态下的液化土体,开展了圆管、横板和竖板的拖拽试验,研究了低有效应力条件下砂土侧向扩展时圆桩的受力机理.结果表明:桩身作用力由径向阻力及土体对桩身的黏滞剪切力组成,这两种力均随着砂土侧向位移的增加逐渐增大并最终保持稳定,其中径向阻力受桩-土相对运动速度影响较小,而黏滞剪切力具有明显的率相关性,即随着相对运动速度的增大而线性减小,表明流动砂土具有明显的剪切稀化流体特征.有效应力的大小对桩-土相互作用和砂土表观黏度具有重要影响,随着有效应力的增加,砂土表观黏度逐渐增大,径向阻力与黏滞剪切力也逐渐增加.

关键词：低有效应力模型试验流动速度上覆有效应力表观黏度