检索结果-南通市图书馆

Superhydrophilic nickel hydroxide ultrathin nanosheets enable high-performance asymmetric supercapacitors

Rare Metals 2024年第1期43卷 138-147页

作者： Yi-ran Wang Fei Zhang Jian-Min Gu Xiao-Yu zhao ran zhao Xing Wang Tian-Hui Wu Jing Wang Ji-Dong Wang De-Song Wang State Key Laboratory of Metastable Materials Science and Technology(MMST) Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China Department of Food and Pharmaceutical Engineering Suihua UniversitySuihua 152000China School of Chemical Science and Engineering Tongji UniversityShanghai 200092China School of Sciences Hebei University of Science and TechnologyShijiazhuang 050018China

Superhydrophilic surfaces have been applied for supercapacitor;however,during energy storage reaction,how the wettability affects the process of electrochemical reaction specifically is still ***,we demonstrate superhydrophilic surface for promotion of electrochemical reactions by liquid affinity and further explain the mechanism,where the transition of the wettability state caused by the change in surface free energy is the main reason for the obvious increase in specific *** citric acid assistance strategy,an intrinsically hydrophobic Ni(OH)_(2)thick nanosheets(HNHTNs,16 nm)can be transitioned into superhydrophilic Ni(OH)_(2)ultrathin nanosheets(SNHUNs,6.8 nm),where the water contact angle was 0°and the surface free energy increased from 8.6to 65.8 mN·m^(-1),implying *** with HNHTNs,the specific capacitance of SNHUNs is doubled:from 1230 F·g^(-1)(HNHTNs)to 2350 F·g^(-1)(2A·g^(-1))and,even at 20 A·g^(-1),from 833 F·g^(-1)(HNHTNs)to 1670 F·g^(-1).The asymmetric capacitors assembled by SNHUNs and activated carbon show 52.44 Wh·kg^(-1)at 160W·kg^(-1)and excellent stability with~90%retention after5000 cycles(~80%retention after 9500 cycles).The promotion of electrochemical performances is ascribed to the change of surface wettability caused by surface free energy,which greatly increase affinity of electrode to the surrounding liquid environment to reduce the interface resistance and optimize the electron transport path.

关键词： Asymmetric supercapacitor Superhydrophilic interface Transition metal hydroxides Ultrathin nanosheets High specific capacitance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fe3O4@SiO2-Protein A-oHSV/CD63 Ab for Capturing Virus and Exosomes

引用

Journal of Analysis and Testing 2024年第3期8卷 335-350页

作者： Wenqing Zheng Pingyi Zheng ran zhao Xinyu Xu Xiao Zhang Xiaoqian Yuan Ying Xu Zichuan Liu Youxin Li Tianjin Key Laboratory for Modern Drug Delivery and High-Eiffciency Collaborative Innovation Center of Chemical Science and Engineering School of Pharmaceutical Science and Technology Faculty of MedicineTianjin University

Protein A modi?ed magnetic spheres (Fe3O4@SiO2-Protein A) with 22.7 emu/g saturation magnetization were prepared and *** spheres had a diameter of 10 nm and was stable up to 229.2°C,and can bond 19.694 mg/g of Protein *** Fe3O4@SiO2-Protein A was?rstly combined with oHSV-BJ-2-A antibody to capture oHSV from disease venom,and the amount of binding virus was 1.92×107to 3.44×107PFU/***3O4@SiO2-Protein A was modi?ed with CD63 antibody,which was further?xed using dissuccinimide octylate （DSS） as a crosslinking *** prepared Fe3O4@Si O2-Protein A-CD63 Ab was useful in isolating and enriching exosomes from cell *** with commercial kits,Fe3O4@SiO2-Protein A-CD63 Ab demonstrated a better puri?cation e?ect,which was successfully monitored using capillary *** total content of exosomes protein extracted using Fe3O4@SiO2-Protein A-CD63 was 3.4 mg/g,which was obviously higher than that reported in some *** addition,Fe3O4@SiO2-Protein A-CD63 Ab also showed its repeatability through bonding and elution of 5 cycles,which was e?ective in cost *** indicated Fe3O4@SiO2-Protein A-CD63 Ab had the potential for large-scale puri?cation of exosomes in practical applications.

关键词： Antibody Exosome Herpes simplex virus Immunomagnetic spheres

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Wettability-driven synergistic resistance of scale and oil on robust superamphiphobic coating

引用

Chinese Chemical Letters 2024年第7期35卷 433-438页

作者： Yixuan Wang Jiexin Li Zhihao Shang Chengcheng Feng Jianmin Gu Maosheng Ye ran zhao Danna Liu Jingxin Meng Shutao Wang CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences(UCAS) Beijing 100049China State Key Laboratory of Metastable Materials Science and Technology(MMST) Yanshan UniversityQinhuangdao 066004China

Disgusting deposits(e.g.,scale and crude oil)in daily life and industrial production are always serious problems,posing great threats to the safety and economic ***,most of developed coatings can only conquer one part of these deposits such as superhydrophobic coatings possess antiscaling capacity but would adhere crude *** integrate scale resistance with oil repellence,we herein report a robust superamphiphobic(SAB)coating simultaneously reducing pollution of scale and oil for extended period of time(two weeks with over 98%reduction).Compared with single role of superhydrophobic and amphiphilic surfaces,the SAB coating can not only inhibit interfacial nucleation of scale but also reduce the adhesion of formed scale and polluted *** durability of the SAB coating is evaluated via mechanical tests(sandpaper abrasion,tape stripping and sand falling)and chemical corrosion(corrosive liquid immersing),revealed by sustainable high contact angles and low contact angle hysteresis of water and *** universality of this strategy can be further confirmed by adding different particles like kaolin,Al_(2)O_(3),and SiO_(2),resisting multiple types of scale(i.e.,CaSO_(4),BaSO_(4)and MgCO_(3))and oil(i.e.,glycerol,glycol,and mineral oil).Therefore,this study provides an ideal avenue for resisting scale and oil,which may be used for conquering the complexity of application environments(e.g.,oil production and transportation).

关键词： Superamphiphobic Durability Wettability Anti-scaling Oil repellence

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Liquid lens based holographic camera for real 3D scene hologram acquisition using end-to-end physical model-driven network

引用

Light(Science & Applications) 2024年第3期13卷 488-497页

作者： Di Wang zhao-Song Li Yi Zheng You-ran zhao Chao Liu Jin-Bo Xu Yi-Wei Zheng Qian Huang Chen-Liang Chang Da-Wei Zhang Song-Lin Zhuang Qiong-Hua Wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing 100191China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China

With the development of artificial intelligence,neural network provides unique opportunities for holography,such as high fidelity and dynamic *** to obtain real 3D scene and generate high fidelity hologram in real time is an urgent ***,we propose a liquid lens based holographic camera for real 3D scene hologram acquisition using an end-to-end physical model-driven network(EEPMD-Net).As the core component of the liquid camera,the first 10 mm large aperture electrowetting-based liquid lens is proposed by using specially fabricated *** design of the liquid camera ensures that the multi-layers of the real 3D scene can be obtained quickly and with great imaging *** EEPMD-Net takes the information of real 3D scene as the input,and uses two new structures of encoder and decoder networks to realize low-noise phase *** comparing the intensity information between the reconstructed image after depth fusion and the target scene,the composite loss function is constructed for phase optimization,and the high-fidelity training of hologram with true depth of the 3D scene is realized for the first *** holographic camera achieves the high-fidelity and fast generation of the hologram of the real 3D scene,and the reconstructed experiment proves that the holographic image has the advantage of low *** proposed holographic camera is unique and can be used in 3D display,measurement,encryption and other fields.

关键词： calculation solution holographic

来源：

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

First satellite observation of total column water vapor from the Chinese Environmental Trace Gases Monitoring Instrument

引用

Science China Earth Sciences 2024年

作者： ran zhao Chengxin ZHANG Wenjing SU Jin YE Ziwei LI Cheng LIU School of Environmental Science and Optoelectronic Technology University of Science and Technology of China Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Department of Environmental Science and Engineering University of Science and Technology of China Key Laboratory of Environmental Optics and Technology Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes University of Science and Technology of China

Atmospheric water vapor is a critical component of the Earth's water cycle and has significant impacts on weather,climate, and atmospheric chemistry. However, deficiencies remain in the coverage and accuracy of water vapor monitoring. In this study, we first retrieved the total column water vapor（TCWV） in the visible blue spectral band from two Chinese satellite UV-Vis spectrometers, the Environmental Trace Gases Monitoring Instruments（EMIs）, which are onboard the Chinese GaoFen-5（GF-5, since May 2018） and GaoFen-5B（GF-5B, since September 2021） satellites. Nevertheless, limited by factors such as the relatively lower spectral signal-to-noise ratio and weak absorption of water vapor, the accurate retrieval of TCWV from the EMI spectrum is rather challenging. Therefore, we improved the baseline TCWV retrieval based on the differential optical absorption technique, including the re-calibration of the on-orbit spectra, optimization of the spectral fitting, and bias correction in the fitted result. Sensitivity tests show that the mean retrieval TCWV error of the EMI decreased by 1.47 kg m–2compared to that using uncalibrated spectra. The improved spectral fitting significantly reduced the relative uncertainty of the water vapor slant column densities（SCD） by 13.42%, and increased the number of successful fits by 11.64%. The improved EMI TCWV retrieval results from both the GF-5 and GF-5B satellites show a trend consistent with the TROPOspheric Monitoring Instrument（TROPOMI）satellite observations, with a correlation coefficient（R） of 0.98 and a mean bias of 1.04 kg m–2（6.88%）. Ground-based validations showed that the correlation between the EMI TCWV retrievals from the GF-5B satellite（R=0.91） and sun photometer measurements was significantly higher than that from the GF-5 satellite（R=0.87）, which may have been due to the improved performance of the EMI instrument on the GF-5B satellite. Finally, we showed that an intense atmospheric river event could be successfully captu

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Multi-network-region traffic cooperative scheduling in large-scale LEO satellite networks

引用

Journal of Systems Engineering and Electronics 2024年第4期35卷 829-841页

作者： LI Chengxi WANG Fu YAN Wei CUI Yansong FAN Xiaodong ZHU Guangyu XIE Yanxi YANG Lixin ZHOU Luming zhao ran WANG Ning School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China The 6th Research Institute of China Electronics Corporation Beijing 102209China China Satellite Network Share Operation Co. LtdBeijing 100876China Weihai Electronic Information Technology Comprehensive Research Center of the Ministry of Industry and Information Technology Weihai 264200 China

A low-Earth-orbit(LEO)satellite network can provide full-coverage access services worldwide and is an essential candidate for future 6G ***,the large variability of the geographic distribution of the Earth’s population leads to an uneven service volume distribution of access ***,the limitations on the resources of satellites are far from being able to serve the traffic in hotspot *** enhance the forwarding capability of satellite networks,we first assess how hotspot areas under different load cases and spatial scales significantly affect the network throughput of an LEO satellite network ***,we propose a multi-region cooperative traffic scheduling *** algorithm migrates low-grade traffic from hotspot areas to coldspot areas for forwarding,significantly increasing the overall throughput of the satellite network while sacrificing some latency of end-to-end *** algorithm can utilize all the global satellite resources and improve the utilization of network *** model the cooperative multi-region scheduling of large-scale LEO *** on the model,we build a system testbed using OMNET++to compare the proposed method with existing *** simulations show that our proposed method can reduce the packet loss probability by 30%and improve the resource utilization ratio by 3.69%.

关键词： low-Earth-orbit(LEO)satellite network satellite communication load balance multi-region scheduling latency optimization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

楚辞序跋的世俗化倾向

引用

河北学刊 2024年第5期44卷 123-130页

作者：赵然河北大学艺术学院

随着明代商品经济的发展、市民阶层社会地位的提高、思想领域中个体价值的觉醒,文艺呈现出世俗化的倾向,而始终沿着雅正方向发展的楚辞序跋也卷入了世俗化的潮流中。序跋创作的主体走出了雅文化的圈层,官员成为楚辞序跋世俗化的推动者,... 详细信息

随着明代商品经济的发展、市民阶层社会地位的提高、思想领域中个体价值的觉醒,文艺呈现出世俗化的倾向,而始终沿着雅正方向发展的楚辞序跋也卷入了世俗化的潮流中。序跋创作的主体走出了雅文化的圈层,官员成为楚辞序跋世俗化的推动者,商人、刻工也开始创作序跋。屈原形象中蕴含的“忠君爱国”的群体观念逐渐淡化,“忧生愤世”的个体意识得以凸显,序跋作者以失意之真性情重塑屈原,褪去他身上神圣的光环。在“好名”之风的影响下,序跋作者通过书籍出版实现了“立言”的理想,有的作者在序跋中夸大家族和自己的成就,更有甚者将他人成果据为己有。

关键词：楚辞序跋屈原世俗化忠君爱国好名

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neonatal tachypnea caused by diaphragmatic paralysis:A case report

引用

World Journal of Clinical Cases 2024年第22期12卷 5253-5257页

作者： Yan Zeng Pei Luo Di-ran zhao Feng-Yang Wang Bin Song Department of Pediatrics People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina Department of Ultrasound People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina Department of Nephrology People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina

BACKGROUND Diaphragmatic paralysis is typically associated with phrenic nerve *** diaphragmatic paralysis diagnosis is easily missed because its manifestations are variable and usually *** SUMMARY We report a 39-week-old newborn delivered via vaginal forceps who presented with tachypnea but without showing other birth-trauma-related *** infant was initially diagnosed with ***,the newborn still exhibited tachypnea despite effective antibiotic *** radiography revealed right diaphragmatic elevation.M-mode ultrasonography revealed decreased movement of the right *** infant was subsequently diagnosed with diaphragmatic *** 4 weeks,tachypnea *** re-examination using M-mode ultrasonography,the difference in bilateral diaphragmatic muscle movement was smaller than *** Appropriate use of M-mode ultrasound to quantify diaphragmatic excursions could facilitate timely diagnosis and provide objective evaluation.

关键词： Diaphragmatic paralysis M-mode ultrasonography Birth trauma Newborn Case report

来源：

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

高等教育对创新型经济的贡献——基于企业面板数据的实证研究

引用

北京大学教育评论 2024年第1期22卷 18-40,187,188页

作者：杜育红赵冉赵相尧北京师范大学教育学部/首都教育经济研究基地北京100875 伦敦政治经济学院经济系伦敦

在我国经济从追赶型向创新型转变的背景下,办什么样的高等教育,怎么办高等教育,成为建设高等教育强国要回答的首要问题。回答这一问题的关键是对高等教育投资效果的准确评估,特别是要把高等教育对创新型经济的贡献作为资源配置的重要依... 详细信息

在我国经济从追赶型向创新型转变的背景下,办什么样的高等教育,怎么办高等教育,成为建设高等教育强国要回答的首要问题。回答这一问题的关键是对高等教育投资效果的准确评估,特别是要把高等教育对创新型经济的贡献作为资源配置的重要依据。本文基于创新理论,运用企业面板数据,从多角度多层次探讨了高等教育对创新型经济的贡献,研究发现:(1)研究生学历人员对企业自主创新具有更高的影响效应,且这种效应随着时间推移愈加显著,本科和专科学历人员的贡献则逐渐减弱;(2)在创新型企业中,本科和研究生学历人员通过技术创新的中介效应分别为16%和21%,而传统企业并不存在技术创新这一中介路径;(3)驱动技术创新产出的主导力量仍为硕士学历人员,而博士学历人员仅对发明专利类创新作用显著,对于体现技术吸收的实用新型创新产出作用不显著;(4)在技术密集型制造业企业中,研究生学历人员对企业技术创新的影响效应更大,对全行业而言,研究生学历人员对产品和商业模式创新的企业自主创新作用更大。因此,在我国从追赶型经济向创新型经济全面转型之际,进一步扩大研究生规模是创新型经济发展的内在要求;要平衡好技术吸收与技术创新、自主创新与技术创新、传统产业升级和创新型产业发展的关系,进一步加大理工类博士研究生培养支持力度,加强研究生培养中的产教融合;要重视理工科和产品设计、管理类专业研究生的培养,加强对行业特色型高校的资源投入;要重视基础研究,大力加强基础学科拔尖创新人才培养,构建国家创新体系可持续发展的根基。

关键词：高等教育创新型经济教育资源配置

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于改进K均值聚类的光谱重建训练样本选择研究

引用

光谱学与光谱分析 2024年第1期44卷 29-35页

作者：刘振刘莉樊硕赵安然刘思鲁曲阜师范大学传媒学院山东日照276800 曲阜师范大学工学院山东日照276800

光谱反射率重建过程中,训练样本的选择方法及样本容量与重建精度密切相关,寻找一种高效的训练样本选择方法是光谱重建的目标之一。K均值聚类计算复杂度小,计算效率高,但因聚类初始值选择的随机性,以及离群点的影响致使聚类结果不稳定,... 详细信息

光谱反射率重建过程中,训练样本的选择方法及样本容量与重建精度密切相关,寻找一种高效的训练样本选择方法是光谱重建的目标之一。K均值聚类计算复杂度小,计算效率高,但因聚类初始值选择的随机性,以及离群点的影响致使聚类结果不稳定,进而影响光谱重建的精度。基于此,提出了一种改进K均值聚类的训练样本选择方法。首先,将训练样本集的几何中心作为聚类中心的初始值;其次,基于高斯函数构建样本空间分布概率密度函数,并以欧几里德(欧式)距离作为其他聚类中心的度量依据;最后,在训练样本集中,基于簇内平方差度量光谱反射率样本间的相似度,将每个聚类子集中与中心距离最近的样本作为训练样本。为验证该方法的有效性,通过主成分分析法进行光谱重建。实验结果表明,所提的方法相较于传统的方法,光谱重建精度有一定的提高,重建光谱的平均均方根误差小于4%, CIE DE2000色差小于3.756 7。提出的改进的K均值聚类的训练样本选择方法,能够一定程度上提高了光谱重建精度,基本满足复制再现图像的要求。

关键词：光谱重建训练样本聚类算法改进K均值聚类

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：