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Flexible,breathable,and reinforced ultra-thin Cu/PLLA porous-fibrous membranes for thermal management and electromagnetic interference shielding

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Journal of Materials Science & Technology 2023年第30期161卷 150-160页

作者： Jinlin Chang Chen Meng Bowen Shi Wenyuan Wei Renzhi Li Jinmin Meng Haobin Wen Xiangyu Wang Jun Song zhirun hu Zekun Liu Jiashen Li Department of Materials The University of ManchesterManchester M139PLUK School of Mechanical Aerospace and Civil EngineeringThe University of ManchesterManchester M139PLUK Department of Chemistry The University of ManchesterManchester M139PLUK Materdicine Lab School of Life SciencesShanghai UniversityShanghai 200444China Department of Electrical and Electronic Engineering The University of ManchesterManchester M139PLUK Botnar Research Center University of OxfordOld RoadHeadingtonOxford OX37LDUK

Electromagnetic interference shielding and thermal management by wearable devices show great po-tential in emerging digital *** metal films implementing the functions must sacri-fice either flexibility or permeability,which is far from optimal in practical *** this work,an ultra-thin(15μm),flexible,and porous Cu/PLLA fibrous membrane is developed by depositing cop-per particles on the polymer *** novel acetone&heat treatment procedure,the mem-brane is considerably stronger while maintaining the porous fibre *** fantastic breathabil-ity and super high electrical conductivity(9471.8130 S/cm)enable the composites to have fast electri-cal heating characteristics and excellent thermal conductivity for effective thermal ***-while,the porous polymer substrate structure greatly enhances the diffusion of conductive substances and increases the electromagnetic interference shielding effectiveness of the membranes(7797.98 dB cm^(2)/g at the H band and 8072.73 dB cm^(2)/g at the Ku band respectively).The composites present high flexibility,breathability,and strength with the functions of thermal management and electromag-netic shielding,showing great potential for future portable electronic devices and wearable integrated garments.

关键词： Electromagnetic interference shielding effectiveness Thermal management Thin films Metal-matrix composites

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A direct laser-synthesized magnetic metamaterial for low-frequency wideband passive microwave absorption

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International Journal of Extreme Manufacturing 2023年第3期5卷 667-680页

作者： Yihe huang Yize Li Kewen Pan Yixian Fang Kai Chio Chan Xiaoyu Xiao Chao Wei Kostya S Novoselov John Gallop Ling Hao Zhu Liu zhirun hu Lin Li Laser Processing Research Centre Department of MechanicalAerospace and Civil EngineeringThe University of ManchesterOxford RoadM139PLManchesterUnited Kingdom Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201People’s Republic of China Department of Electrical and Electronics Engineering The University of ManchesterOxford RoadM139PL ManchesterUnited Kingdom National Physical Laboratory United Kingdom National Graphene Institute The University of ManchesterOxford RoadM139PL ManchesterUnited Kingdom Department of Materials The University of ManchesterOxford RoadM139PLManchesterUnited Kingdom Department of Physics and Astronomy The University of ManchesterOxfordRoadM139PL ManchesterUnited Kingdom Institute for Functional Intelligent Materials National University of Singapore117544 SingaporeSingapore Chongqing 2D Materials Institute Liangjiang NewAreaChongqing 400714People’s Republic of China

Microwave absorption in radar stealth technology is faced with challenges in terms of its effectiveness in low-frequency ***,we report a new laser-based method for producing an ultrawideband metamaterial-based microwave absorber with a highly uniform sheet resistance and negative magnetic permeability at resonant frequencies,which results in a wide bandwidth in the L-to *** of the electrical sheet resistance uniformity has been achieved with less than 5%deviation at 400Ωsq^(-1)and 6%deviation at 120Ωsq^(-1),resulting in a microwave absorption coefficient between 97.2%and 97.7%within a1.56–18.3 GHz bandwidth for incident angles of 0°–40°,and there is no need for providing energy or an electrical power source during the *** N-and S-doped turbostratic graphene 2D patterns with embedded magnetic nanoparticles were produced simultaneously on a polyethylene terephthalate substrate via laser direct *** proposed low-frequency,wideband,wide-incident-angle,and high-electromagnetic-absorption microwave absorber can potentially be used in aviation,electromagnetic interference(EMI)suppression,and 5G applications.

关键词： laser direct writing degrees of crystallization Fe_(3)O_(4)nanoparticles wide bandwidth low frequency

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老年性肺炎90例诊治分析

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中国社区医师 2017年第27期33卷 67-67,69页

作者：胡志润云南省文山市人民医院 663009

目的:探讨老年性肺炎的诊断和治疗。方法:收治老年性肺炎患者90例,回顾性分析其临床资料。结果:治愈67例(74.4%),好转23例(26.6%),无效0;住院7~28 d,平均17 d。结论:老年性肺炎临床表现不典型,早诊断、早治疗是提高治愈率、好转率的关键。

关键词：老年性肺炎诊断治疗

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盐酸溴己新葡萄糖注射液治疗老年慢性支气管炎发作期疗效观察

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中国社区医师 2016年第24期32卷 42-42,44页

作者：胡志润云南省文山市人民医院老年病科二病区 663009

目的:观察盐酸溴己新葡萄糖注射液治疗老年慢性支气管炎发作期疗效。方法:收治老年慢性支气管炎发作期患者96例,随机分成两组,每组48例。对照组给予常规综合治疗,治疗组在对照组基础上给予盐酸溴己新葡萄糖注射液治疗,比较两组临床疗效... 详细信息

目的:观察盐酸溴己新葡萄糖注射液治疗老年慢性支气管炎发作期疗效。方法:收治老年慢性支气管炎发作期患者96例,随机分成两组,每组48例。对照组给予常规综合治疗,治疗组在对照组基础上给予盐酸溴己新葡萄糖注射液治疗,比较两组临床疗效。结果:治疗组总有效率93.7%,对照组总有效率70.83%。治疗组总有效率明显高于对照组,差异具有统计学意义(P<0.05)。结论:盐酸溴己新葡萄糖注射液治疗老年慢性支气管炎发作期临床疗效显著。

关键词：老年慢性支气管炎发作期盐酸溴己新葡萄糖注射液临床疗效

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胸腔细管引流术治疗胸腔积液观察

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中国社区医师 2015年第9期31卷 70-70,72页

作者：胡志润云南省文山市人民医院老年病科二病区 663099

目的:探讨胸腔细管引流术治疗胸腔积液的效果。方法:收治胸腔积液患者,采用胸腔细管引流术治疗,观察治疗效果。结果:胸腔细管引流术的损伤小,患者易耐受,并发症少。结论:胸腔细管引流术治疗胸腔积液的效果显著。

关键词：胸腔细管引流术胸腔积液探讨

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基于CycleGAN的水下图像增强算法

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现代电子技术 2023年第23期46卷 79-84页

作者：胡志润李然大连海洋大学信息工程学院辽宁大连116023

针对水下图像亮度低、颜色失真以及纹理模糊等问题,提出多尺度循环对抗(MCA)损失函数并用于CycleGAN中,构建了MCA-CycleGAN算法。该网络的生成器是基于U-Net并加入了多尺度卷积和空洞残差卷积,能有效增强水下图像的亮度、颜色以及纹理... 详细信息

针对水下图像亮度低、颜色失真以及纹理模糊等问题,提出多尺度循环对抗(MCA)损失函数并用于CycleGAN中,构建了MCA-CycleGAN算法。该网络的生成器是基于U-Net并加入了多尺度卷积和空洞残差卷积,能有效增强水下图像的亮度、颜色以及纹理细节信息;亮度均衡方面采用了全卷积模块,使图像亮度分布均匀进而获得较好的主观视觉。判别器模块采用双重判别器,较好地提取图像的细节信息进而促进整个网络模型生成更高质量的图像。实验证明,该网络模型与其他模型相比,在PSNR、UIQM和UCIQE客观指标上分别提升了4.602、0.131 1和0.032 7,且生成的增强图像更清晰、更自然、更符合人类的主观视觉。

关键词：水下图像增强 MCA-CycleGAN U-Net 全卷积模块双重判别器图像纹理

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锌铁离子浓度对赤铁矿法除铁的影响

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有色金属工程 2017年第6期7卷 54-57页

作者：胡智润罗佳邓志敢魏昶朱北平牛辉昆明理工大学冶金与能源工程学院昆明650093 云锡文山锌铟冶炼有限公司云南马关663701

针对赤铁矿沉铁技术,以纯硫酸亚铁和硫酸锌溶液为研究对象,研究了锌铁离子浓度对赤铁矿法除铁过程中沉铁效果的影响和赤铁矿渣硫铁含量的影响。结果表明,增加亚铁离子浓度,渣中硫的百分含量会升高,铁会减少;在相同亚铁离子浓度条件下,... 详细信息

针对赤铁矿沉铁技术,以纯硫酸亚铁和硫酸锌溶液为研究对象,研究了锌铁离子浓度对赤铁矿法除铁过程中沉铁效果的影响和赤铁矿渣硫铁含量的影响。结果表明,增加亚铁离子浓度,渣中硫的百分含量会升高,铁会减少;在相同亚铁离子浓度条件下,增加锌离子浓度,沉铁效果会变差,渣中硫百分含量会降低,铁会升高。

关键词：湿法炼锌赤铁矿铁离子浓度锌离子浓度除铁

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Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance Li–CO_(2)Batteries in a Wide‑Temperature Range

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Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong hu Wenyi Lian Kang hu Qiuju Li Xueliang Cui Tengyu Yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range Li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and Li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range Li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： Li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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A Novel Model for Describing Rail Weld Irregularities and Predicting Wheel-Rail Forces Using a Machine Learning Approach

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 555-577页

作者： Linlin Sun Zihui Wang Shukun Cui Ziquan Yan Weiping hu Qingchun Meng State Key Laboratory of High-Speed Railway Track System China Academy of Railway Sciences Corporation LimitedBeijing100081China Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing100081China School of Aeronautic Science and Engineering Beihang UniversityBeijing100191China

Rail weld irregularities are one of the primary excitation sources for vehicle-track interaction dynamics in modern high-speed *** can cause significant wheel-rail dynamic interactions,leading to wheel-rail noise,component damage,and *** researchers have employed the vehicle-track interaction dynamic model to study the dynamic interactions between wheel and rail induced by rail weld geometry ***,the cosine wave model used to simulate rail weld irregularities mainly focuses on the maximum value and neglects the geometric *** this study,novel theoretical models were developed for three categories of rail weld irregularities,based on measurements of the high-speed railway from Beijing to *** vertical dynamic forces in the time and frequency domains were compared under different running *** forces generated by the rail weld irregularities that were measured and modeled,respectively,were compared to validate the accuracy of the proposed ***,based on the numerical study,the impact force due to rail weld irrregularity is modeled using an Artificial Neural Network(ANN),and the optimum combination of parameters for this model is *** results showed that the proposed model provided a more accurate wheel/rail dynamic evaluation caused by rail weld irregularities than that established in the *** ANN model used in this paper can effectively predict the impact force due to rail weld irrregularity while reducing the computation time.

关键词： Rail weld irregularity high-speed railway vehicle-track coupled dynamics wheel/rail dynamic vertical force artificial neural networks

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