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Inter-Skeleton Conductive Routes Tuning Multifunctional Conductive Foam for Electromagnetic Interference Shielding, Sensing and Thermal Management

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NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： Li, Xufeng Chen, Chunyan Li, Zhenyang Yi, Peng Zou, Haihan Deng, Gao Fang, Ming He, Junzhe Sun, Xin yu, Ronghai Shui, Jianglan Pan, Caofeng Liu, Xiaofang Beihang Univ Sch Mat Sci & Engn Beijing 100191 Peoples R China Beihang Univ Inst Atom Mfg Beijing 100191 Peoples R China Tianmushan Lab Xixi Octagon City Hangzhou 310023 Peoples R China Beijing Inst Environm Features Sci & Technol Electromagnet Scattering Lab Beijing 100854 Peoples R China

Unique inter-skeleton conductive films are constructed in polymer *** resistance change of the foam can reach four orders of magnitude under *** foam exhibits strain-adaptive electromagnetic interference shielding performance, anti-interference pressure sensor with high sensitivity over a wide pressure range and compression-regulated Joule heating function. Conductive polymer foam (CPF) with excellent compressibility and variable resistance has promising applications in electromagnetic interference (EMI) shielding and other integrated functions for wearable electronics. However, its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during deformation. Here, an innovative loading strategy of conductive materials on polymer foam is proposed to significantly increase the contact probability and contact area of conductive components under compression. Unique inter-skeleton conductive films are constructed by loading alginate-decorated magnetic liquid metal on the polymethacrylate films hanged between the foam skeleton (denoted as AMLM-PM foam). Traditional point contact between conductive skeletons under compression is upgraded to planar contact between conductive films. Therefore, the resistance change of AMLM-PM reaches four orders of magnitude under compression. Moreover, the inter-skeleton conductive films can improve the mechanical strength of foam, prevent the leakage of liquid metal and increase the scattering area of EM wave. AMLM-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effectiveness, solving the problem of traditional CPFs upon compression. The upgrade of resistance response also enables foam to achieve sensitive pressure sensing over a wide pressure range and compression-regulated Joule heating function.

关键词： Inter-skeleton conductive films Conductive polymer foam Liquid metal Electromagnetic interference shielding

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思想政治教育数字化的价值意蕴及实践进路

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新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 128-136页

作者：于祥成刘成合肥工业大学安徽合肥230009 武汉大学马克思主义学院湖北武汉430064

随着数字技术的广泛应用和教育数字化转型发展,数字化变革成为思想政治教育创新发展的必然选择。面对新的时代境遇,要全面把握思想政治教育数字化的内涵和特征,深刻认识思想政治教育数字化在推动思想政治教育认知重建、资源重组、话语... 详细信息

随着数字技术的广泛应用和教育数字化转型发展,数字化变革成为思想政治教育创新发展的必然选择。面对新的时代境遇,要全面把握思想政治教育数字化的内涵和特征,深刻认识思想政治教育数字化在推动思想政治教育认知重建、资源重组、话语重构、形态重塑等方面的重要价值。同时,要秉承数字理念,构建思想政治教育数字范式;搭建数字平台,优化思想政治教育数字服务;培育数字素养,提升思想政治教育数字技能;厚植“数字土壤”,形塑思想政治教育数字生态,积极探索思想政治教育数字化实践创新路径。

关键词：思想政治教育数字化数字技术实践进路

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基于Faster R-CNN和Mask R-CNN的滑坡自动识别研究

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大地测量与地球动力学 2025年第1期45卷 1-4,12页

作者：于宪煜杨森湖北工业大学土木建筑与环境学院武汉市430068

基于高分一号影像,以三峡库区库首段为例,通过目视解译出160个滑坡样本,按照9∶1比例分为训练样本和验证样本,分别利用Faster R-CNN和Mask R-CNN算法构建滑坡自动识别模型。为进一步对比分析不同样本比例下两种模型的性能,分别采用8∶2... 详细信息

基于高分一号影像,以三峡库区库首段为例,通过目视解译出160个滑坡样本,按照9∶1比例分为训练样本和验证样本,分别利用Faster R-CNN和Mask R-CNN算法构建滑坡自动识别模型。为进一步对比分析不同样本比例下两种模型的性能,分别采用8∶2、7∶3、6∶4的样本比例进行计算。研究结果表明,Mask R-CNN模型识别结果准确率、召回率和F 1分数等3项指标均优于Faster R-CNN;且经过交叉验证,证明Mask R-CNN模型的性能更为稳定。

关键词：深度学习滑坡识别 Mask R-CNN Faster R-CNN 交叉验证

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基于图论分析对轻度创伤性颅脑损伤后睡眠障碍患者的脑结构网络改变的研究

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临床放射学杂志 2025年第1期44卷 47-52页

作者：俞越杨禹李洋蔡玉姣王扬李月峰苏辉江苏大学医学院镇江212013 江苏大学附属人民医院镇江212001 扬州大学第三临床医学院 225600

目的探究轻度创伤性颅脑损伤患者脑结构网络的改变与未来睡眠障碍的关联。方法前瞻性搜集轻度创伤性颅脑损伤患者198例(mTBI组)及与之匹配的健康对照者60名(HC组)。以出院3个月后的匹兹堡睡眠质量指数量表(PSQI)为评估手段,将轻度创伤... 详细信息

目的探究轻度创伤性颅脑损伤患者脑结构网络的改变与未来睡眠障碍的关联。方法前瞻性搜集轻度创伤性颅脑损伤患者198例(mTBI组)及与之匹配的健康对照者60名(HC组)。以出院3个月后的匹兹堡睡眠质量指数量表(PSQI)为评估手段,将轻度创伤性颅脑损伤患者分为睡眠障碍组(mTBI-SD组)和无睡眠障碍组(mTBI-ND组)。利用方差分析比较3组受试者脑结构网络属性。构建Logistic回归模型探究脑结构网络属性与未来睡眠障碍发病风险的关联。采用Pearson相关分析探究脑结构网络属性与PSQI评分的相关性。结果3组受试者脑结构网络属性存在显著的组间差异。与mTBI-ND组相比,mTBI-SD组表现出较高的特征路径长度,较低的左前扣带回和旁扣带回节点效率。Logistic回归模型显示特征路径长度(OR特征路径长度=0.74,95%CI:0.63~0.94,P<0.001)、左前扣带和旁扣带回的节点效率(OR ACG.L=0.70,95%CI:0.65~0.80,P<0.001)可以显著预测mTBI-SD的发生,受试者工作特征曲线下面积分别为0.75、0.74。相关分析结果显示mTBI-SD组的特征路径长度(r=-0.41,P<0.01)、左前扣带和旁扣带回的节点效率(r=-0.50,P<0.01)与发病后3个月的PSQI评分相关。结论mTBI显著改变患者的脑结构网络连接属性,存在特征路径长度、左前扣带回和旁扣带回的节点效率改变的患者更容易在未来发生睡眠障碍。

关键词：轻度创伤性颅脑损伤睡眠障碍结构网络图论分析

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单层Cs_(2)PbI_(2)Cl_(2)中点缺陷的形成与稳定性

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原子与分子物理学报 2025年第5期42卷 130-136页

作者：何诗颖赵宇清邹代峰许英廖雨洁禹卓良湖南科技大学物理与电子科学学院湘潭411201 智能传感器与新型传感器材料湖南省重点实验室湘潭411201 湖南理工学院物理与电子科学学院岳阳414006

Cs_(2)PbI_(2)Cl_(2)是卤化铅钙钛矿材料的新成员,由于其高的光吸收系数和长的载流子迁移距离等优异的光电物理性能,在太阳能电池、光电探测器、场效应晶体管以及发光二极管等领域受到广泛的关注.其中光电材料及器件的优良特性由电子结... 详细信息

Cs_(2)PbI_(2)Cl_(2)是卤化铅钙钛矿材料的新成员,由于其高的光吸收系数和长的载流子迁移距离等优异的光电物理性能,在太阳能电池、光电探测器、场效应晶体管以及发光二极管等领域受到广泛的关注.其中光电材料及器件的优良特性由电子结构决定,而钙钛矿的点缺陷对电子结构具有重要的调控,且单层Cs_(2)PbI_(2)Cl_(2)中点缺陷的研究尚且缺乏.本文基于密度泛函理论的第一性原理计算,对单层Cs_(2)PbI_(2)Cl_(2)的铯空位、碘空位、氯空位、铯替代铅、碘替代铯、碘替代铅、碘替代氯、氯替代铯、氯替代铅和氯替代碘的缺陷形成能和稳定性进行了研究.结果表明:在富铅和缺铅条件下,碘替代氯和氯替代碘的缺陷形成能偏低,且氯替代碘能有效降低体系总能,提高体系稳定性.在缺铅条件下铯空位缺陷形成能低于富铅条件,在缺铅条件下更易形成铯空位;富铅和缺铅条件下对碘替代氯和氯替代碘的缺陷形成能基本无影响.上述研究结果有助于理解点缺陷对钙钛矿材料稳定性的影响,同时也为未来实验上设计基于Cs_(2)PbI_(2)Cl_(2)的高效的光电子器件提供理论依据.

关键词：单层Cs_(2)PbI_(2)Cl_(2) 形成能点缺陷稳定性

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体相二硫化铼中点缺陷的形成与稳定性

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原子与分子物理学报 2025年第5期42卷 143-150页

二硫化铼是过渡金属二硫族化合物的成员,由于层间的范德华作用、合适的带隙、高的光吸收系数和长的载流子迁移距离在光电子研究领域引起广泛的关注.其中光电材料及器件的优良特性由电子结构决定,而半导体的缺陷能级对电子结构具有重要... 详细信息

二硫化铼是过渡金属二硫族化合物的成员,由于层间的范德华作用、合适的带隙、高的光吸收系数和长的载流子迁移距离在光电子研究领域引起广泛的关注.其中光电材料及器件的优良特性由电子结构决定,而半导体的缺陷能级对电子结构具有重要的调控,且体相二硫化铼的缺陷研究尚且缺乏.本文基于密度泛函理论的第一性原理计算,对体相二硫化铼的铼空位、硫空位、钨掺杂(或替代)铼、钨掺杂硫、锝掺杂铼和锝掺杂硫的缺陷形成能和稳定性进行了研究.结果表明:钨掺杂硫和锝掺杂硫形成深施主能级缺陷,铼空位形成浅施主能级缺陷.在富铼和富硫条件下,钨掺杂铼的缺陷形成能低且能有效降低体系总能,提高体系稳定性.钨掺杂硫的缺陷虽然能降低体系的总能提高二硫化铼的稳定性,但较大的缺陷形成能表明钨掺杂硫缺陷难以形成.上述研究结果有助于理解缺陷能级对半导体深浅能级和稳定性的影响,同时也为未来实验上设计基于二硫化铼的高效的光电子器件提供理论依据.

关键词：体相二硫化铼形成能缺陷能级稳定性

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Evaluation of All-Sky Assimilation of FY-3C/MWHS-2 on Mei-yu Precipitation Forecasts over the Yangtze-Huaihe River Basin

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Advances in Atmospheric Sciences 2021年第8期38卷 1397-1414页

作者： yu LI Keyi CHEN Zhipeng XIAN School of Atmospheric Sciences Chengdu University of Information TechnologyChengdu 610025China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100049China

All-sky (i.e., clear, cloudy, and precipitating conditions) assimilation of microwave observations shows potentially positive impacts on the improvement of the forecasts of cloud-associated weather processes. In this study, a typical mei-yu heavy precipitation event that occurred in 2017 was investigated, and the Weather Research and Forecasting data assimilation (WRFDA) as well as its 3D-Var assimilation scheme (excluding cloud and precipitation control variables) were applied to assimilate the Fengyun-3C (FY-3C) Microwave Humidity Sounder-2 (MWHS-2) observations under clear- sky (excluding the observations that are strongly affected by ice clouds and precipitation) and all-sky conditions. Three experiments including a control experiment without assimilating any observations, clear-sky, and all-sky experiments with only FY-3C/MWHS-2 observations assimilated were carried out. The results show that the all-sky assimilation approach that provides more cloud and precipitation information and increased more than 10% of the satellite data usage than the clear-sky experiment. Meanwhile, as compared with the control experiment, the all-sky assimilation reduced nearly 0.5% of the root mean square errors in the humidity fields, leading to more accurate forecast performances regarding the distribution and intensity of heavy rainfall;but it exhibited a neutral to negative impacts on the wind and temperature. Although the system used to conduct all-sky assimilation is only able to adjust control variables for moisture-, wind-, and temperature- related variables in the presence of cloud and does not benefit directly from cloud or precipitation information, the positive effects on heavy rainfall forecasts achieved in this study indicate a potential future benefit regarding disaster prevention and mitigation.

关键词： all-sky assimilation FY-3C MWHS-2 mei-yu rainfall

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Role of nutrition in diabetes mellitus and infections

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World Journal of Clinical Cases 2025年第3期13卷 1-8页

作者： Xue-Lu yu Li-yun Zhou Xiao Huang Xin-yue Li Ming-Ke Wang Ji-Shun Yang Naval Medical Center of PLA Naval Medical UniversityShanghai 200052China

In this editorial,we have commented on the article that has been published in the recent issue of World Journal of Clinical *** authors have described a case of unilateral thyroid cyst and have opined that the acute onset of infection may be linked to diabetes mellitus(DM).We have focused on the role of nutrition in the association between DM and *** with DM are at a high risk of infection,which could also be attributed to nutrition-related *** interventions for patients with diabetes are mainly based on a low-calorie diet,which can be achieved by adhering to a low-carbohydrate ***,dietary fiber supplementation is recommended to maintain the diversity of the gut ***,high-quality protein can prevent the increased risk of infection due to *** of vitamins C,vitamins A,vitamins D,and folic acid improves blood sugar control and facilitates immune *** deficiencies augment the risk of infection,but the relationship with diabetes is mostly U-shaped and a good intake should be maintained.

关键词： Diabetes mellitus Infection Macronutrients Vitamins Minerals

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Metabolic reprogramming: a new option for the treatment of spinal cord injury

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Neural Regeneration Research 2025年第4期20卷 1042-1057页

作者： Jiangjie Chen Jinyang Chen Chao yu Kaishun Xia Biao Yang Ronghao Wang Yi Li Kesi Shi yuang Zhang Haibin Xu Xuesong Zhang Jingkai Wang Qixin Chen Chengzhen Liang Department of Orthopedics The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang ProvinceChina Orthopedics Research Institute of Zhejiang University Zhejiang UniversityHangzhouZhejiang ProvinceChina Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province HangzhouZhejiang ProvinceChina Clinical Research Center of Motor System Disease of Zhejiang Province HangzhouZhejiang ProvinceChina Qiandongnan Prefecture People’s Hospital KailiGuizhou ProvinceChina Department of Orthopedics Fourth Medical CenterChinese PLA General HospitalBeijingChina

Spinal cord injuries impose a notably economic burden on society,mainly because of the severe after-effects they *** the ongoing development of various therapies for spinal cord injuries,their effectiveness remains ***,a deeper understanding of metabolism has opened up a new therapeutic opportunity in the form of metabolic *** this review,we explore the metabolic changes that occur during spinal cord injuries,their consequences,and the therapeutic tools available for metabolic *** spinal cord metabolism is characterized by independent cellular metabolism and intercellular metabolic ***,spinal cord injury results in metabolic disorders that include disturbances in glucose metabolism,lipid metabolism,and mitochondrial *** metabolic disturbances lead to corresponding pathological changes,including the failure of axonal regeneration,the accumulation of scarring,and the activation of *** rescue spinal cord injury at the metabolic level,potential metabolic reprogramming approaches have emerged,including replenishing metabolic substrates,reconstituting metabolic couplings,and targeting mitochondrial therapies to alter cell *** available evidence suggests that metabolic reprogramming holds great promise as a next-generation approach for the treatment of spinal cord *** further advance the metabolic treatment of the spinal cord injury,future efforts should focus on a deeper understanding of neurometabolism,the development of more advanced metabolomics technologies,and the design of highly effective metabolic interventions.

关键词： axons glycolysis metabolic reprogramming metabolism mitochondria neural regeneration neuroprotection oxidative phosphorylation spinal cord injury therapy

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A novel flexible nerve guidance conduit promotes nerve regeneration while providing excellent mechanical properties

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Neural Regeneration Research 2025年第7期20卷 2084-2094页

作者： Tong Li Quhan Cheng Jingai Zhang Boxin Liu yu Shi Haoxue Wang Lijie Huang Su Zhang Ruixin Zhang Song Wang Guangxu Lu Peifu Tang Zhongyang Liu Kai Wang Department of Orthopedics the Fourth Medical Center of Chinese PLA General HospitalBeijingChina Department of Training and Sports Medicine Characteristic Medical Center of Chinese People’s Armed Police ForceTianjinChina Medical School of Chinese PLA BeijingChina Key Laboratory of Bioactive Materials for the Ministry of Education College of Life SciencesNankai UniversityTianjinChina Department of Orthopedics Tianjin HospitalTianjinChina Department of Rehabilitation Medicine Er Quan Hospital of PAPWuxiJiangsu ProvinceChina

Autografting is the gold standard for surgical repair of nerve defects>5 mm in length;however,autografting is associated with potential complications at the nerve donor *** an alternative,nerve guidance conduits may be *** ideal conduit should be flexible,resistant to kinks and lumen collapse,and provide physical cues to guide nerve *** designed a novel flexible conduit using electrospinning technology to create fibers on the innermost surface of the nerve guidance conduit and employed melt spinning to align ***,we prepared disordered electrospun fibers outside the aligned fibers and helical melt-spun fibers on the outer wall of the electrospun fiber *** presence of aligned fibers on the inner surface can promote the extension of nerve cells along the *** helical melt-spun fibers on the outer surface can enhance resistance to kinking and compression and provide *** novel conduit promoted nerve regeneration and functional recovery in a rat sciatic nerve defect model,suggesting that it has potential for clinical use in human nerve injuries.

关键词： aligned fibers anti-kinking helical fibers nerve guidance conduit nerve regeneration peripheral nerve injury topological guidance

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