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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3期17卷 19-36页

作者： Xufeng Li Chunyan Chen Zhenyang Li Peng Yi Haihan Zou Gao Deng ming Fang Junzhe He Xin Sun Ronghai Yu Jianglan Shui Caofeng Pan Xiaofang liu School of Materials Science and Engineering Beihang UniversityBeijing 100191People’s Republic of China Institute of Atomic Manufacturing Beihang UniversityBeijing 100191People’s Republic of China Tianmushan Laboratory Xixi Octagon CityYuhang DistrictHangzhou 310023People’s Republic of China Science and Technology On Electromagnetic Scattering Laboratory Beijing Institute of Environmental FeaturesBeijing 100854People’s Republic of China

Conductive polymer foam(CPF)with excellent compressibility and variable resistance has promising applications in electromagnetic interference(EMI)shielding and other integrated functions for wearable ***,its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during ***,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 *** 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 ***,the resistance change of AMLM-PM reaches four orders of magnitude under ***,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 ***-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effectiveness,solving the problem of traditional CPFs upon *** 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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Isolation and single-molecule magnetism of neutral rare-earth(III) sandwich complexes supported by compact aromatic rings

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Science China Chemistry 2025年

作者： ming liu Yan-Cong Chen Jieyu Zheng Xiao-Han Peng ming-Liang Tong Akseli Mansikkam?ki Fu-Sheng Guo Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of Chemistry Institute of Green Chemistry and Molecular Engineering (IGCME) Guangdong Basic Research Center of Excellence (GBRCE) for Functional Molecular EngineeringSun Yat-sen University NMR Research Unit University of Oulu

Over the past few decades,various types of metal-sandwich structures have been synthesized and reported,which significantly advanced organometallic chemistry and contributed to numerous ***,charge-neutral rare-earth（III） sandwich structures based on compact aromatic ligands still remained unexplored due to the challenges in their ***,the immense potential of this type of structure in building high-performance single-molecule magnets （SMMs） has compelled us to overcome these synthetic ***,we aimed to isolate such complexes in a general formula of[（Ring1）REIII（Ring2）].[（CE4B）t4Me2NREIII(Cpi Pr5)](3-RE,RE=Y,Dy;（C4B）Et4Me2N=1-（N,N-dimethylamino）-2,3,4,5-tetraethylborolyl;Cpi Pr5=pentaisopropylcyclopentadienyl) were successfully obtained via the salt-metathesis reaction of the precursor[REIII(CpiPr5)（BH4）2-（THF）]（,RE=Y,Dy;THF=tetrahydrofuran） and the new aminoborolide ligand[Na2（C4B）Et4Me2N1-RE（THF）2]2（2）,which represent the first neutral rare-earth（III）-sandwich complexes ligated by compact aromatic *** complexes 3-RE were characterized by single-crystal X-ray diffraction,elemental analysis,UV-Vis-NIR and *** 3-Y was studied by NMR *** and dynamic magnetic properties of 3-Dy were investigated by SQUID magnetometry,showing a high anisotropy barrier of 785（12） cm-1and open hysteresis loops up to 12 *** bonding of nitrogen to dysprosium（III） near the equatorial plane lowers the anisotropy,and a bulkier ligand in the future should be able to avoid *** work not only demonstrates that such type of neutral rare-earth（III）-sandwich complexes is totally synthetically feasible,but also paves the way for the development of high-performance SMMs.

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Data-driven Analysis on the Spatio-temporal Characteristics and Influencing Factors of Carbon Emissions in Guangdong Province

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Huanjing Kexue/Environmental Science 2025年第3期46卷 1482-1491页

作者： Ke, Yi-ming Gao, Yuan Yuan, ming liu, Wei liu, Fang-Tong International Energy College Jinan University Zhuhai519070 China Energy and Electricity Research Center Jinan University Zhuhai519070 China School of Intelligent Systems Science and Engineering Jinan University Zhuhai519070 China

Scientific analysis of carbon emission characteristics is a key link for precise policy implementation and orderly achievement of Carbon Peak and Carbon Neutrality. Taking 21 prefecture level cities in Guangdong Province as research objects，data including their economic activity，energy consumption，and population distribution from 2013 to 2022 was collected. First，the carbon emission accounting method was used to analyze the time changes and spatial distribution characteristics of carbon emissions in the past decade. Second，the principal component analysis and K-means method was used to reduce the dimensionality and cluster division for Guangdong urban characteristics. Third，the Generalized Schur Decomposition model was applied to analyze the influencing factors. Furthermore，carbon reduction strategies for four typical cities in Guangdong Province were proposed. The results showed that：① From 2013 to 2022，the total carbon emissions in Guangdong Province continued to increase and showed a significant regional imbalance in its spatial distribution. The carbon emissions contribution in the Pearl River Delta region was as high as 42.50%，whereas that in northern Guangdong was the lowest. ② Each city in Guangdong Province performed differently in green development，economic development，and industrial development. All 21 cities could be broadly divided into four categories，namely，Demonstration City，Resource-dependent City，Traditional Industrial City，and Emission-reducing City，accounting for approximately 14.29%，28.57%，19.05%，and 38.09%，respectively. ③ Economic activities were the common driving factors for carbon emissions in all cities，whereas energy consumption and lifestyle were the core driving factors for carbon emissions in resource-dependent cities and traditional industrial cities. After the proposal of Carbon Peak and Carbon Neutrality，energy composition became a key driving force for demonstration cities and emission-reducing cities. © 2025 Science Press. All right

关键词： Low emission

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TB-Graph: Enhancing Encrypted Malicious Traffic Classification through Relational Graph Attention Networks

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Computers, Materials & Continua 2025年第2期82卷 2985-3004页

作者： ming liu Qichao Yang Wenqing Wang Shengli liu School of Cyber Science and Technology Information Engineering UniversityZhengzhou450001China

The proliferation of internet traffic encryption has become a double-edged sword. While it significantly enhances user privacy, it also inadvertently shields cyber-attacks from detection, presenting a formidable challenge to cybersecurity. Traditional machine learning and deep learning techniques often fall short in identifying encrypted malicious traffic due to their inability to fully extract and utilize the implicit relational and positional information embedded within data packets. This limitation has led to an unresolved challenge in the cybersecurity community: how to effectively extract valuable insights from the complex patterns of traffic packet transmission. Consequently, this paper introduces the TB-Graph model, an encrypted malicious traffic classification model based on a relational graph attention network. The model is a heterogeneous traffic burst graph that embeds side-channel features, which are unaffected by encryption, into the graph nodes and connects them with three different types of burst edges. Subsequently, we design a relational positional coding that prevents the loss of temporal relationships between the original traffic flows during graph transformation. Ultimately, TB-Graph leverages the powerful graph representation learning capabilities of Relational Graph Attention Network (RGAT) to extract latent behavioral features from the burst graph nodes and edge relationships. Experimental results show that TB-Graph outperforms various state-of-the-art methods in fine-grained encrypted malicious traffic classification tasks on two public datasets, indicating its enhanced capability for identifying encrypted malicious traffic.

关键词： Encrypted malicious traffic classification traffic burst graph graph representation learning deep learning

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Correlations of the expression of Cx43,SCF^(FBXW7),p-cyclin E1(Ser73),p-cyclin E1(Thr77)and p-cyclin E1(Thr395)in colon cancer tissues

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 207-213页

作者： Rong-Gang Luan ming-Da liu Zi-Feng Deng Cong-Lan Lu Mei-Ling Yu ming-Yu Zhang Rong liu Ran An You-Liang Yao Dong-Bei Guo Yong-Xing Zhang Lei Zhao Department of Gastrointestinal Surgery Air Force Hospital of Eastern TheaterAnhui Medical UniversityNanjing 230032Jiangsu ProvinceChina State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamen 361102Fujian ProvinceChina Trauma Surgery Air Force Hospital of Eastern TheaterAnhui Medical UniversityNanjing 230032Jiangsu ProvinceChina Department of Orthopaedics Air Force Hospital of Eastern TheaterAnhui Medical UniversityNanjing 230032Jiangsu ProvinceChina

BACKGROUND Previous cellular studies have demonstrated that elevated expression of Cx43 promotes the degradation of cyclin E1 and inhibits cell proliferation through ***,reduced expression results in a loss of this capacity to facilitate cyclin E *** ubiquitination and degradation of cyclin E1 may be associated with phosphorylation at specific sites on the protein,with Cx43 potentially enhancing this process by facilitating the phosphorylation of these critical *** To investigate the correlation between expression of Cx43,SKP1/Cullin1/F-box(SCF)FBXW7,p-cyclin E1(ser73,thr77,thr395)and clinicopathological indexes in colon *** Expression levels of Cx43,SCF^(FBXW7),p-cyclin E1(ser73,thr77,thr395)in 38 clinical colon cancer samples were detected by immunohistochemistry and were analyzed by statistical methods to discuss their *** Positive rate of Cx43,SCF^(FBXW7),p-cyclin E1(Ser73),p-cyclin E1(Thr77)and p-cyclin E1(Thr395)in detected samples were 76.32%,76.32%,65.79%,5.26%and 55.26%*** expressions of these proteins were not related to the tissue type,degree of tissue differentiation or lymph node ***43 and SCF^(FBXW7)(r=0.749),p-cyclin E1(Ser73)(r=0.667)and p-cyclin E1(Thr395)(r=0.457),SCF^(FBXW7) and p-cyclin E1(Ser73)(r=0.703)and p-cyclin E1(Thr395)(0.415)were correlated in colon cancer(P<0.05),and expressions of the above proteins were positively correlated in colon *** Cx43 may facilitate the phosphorylation of cyclin E1 at the Ser73 and Thr195 sites through its interaction with SCF^(FBXW7),thereby influencing the ubiquitination and degradation of cyclin E1.

关键词： Colon cancer Cx43 SCF^(FBXW7) Phosphorylation of cyclin E1 Sites of cyclin E1 Correlation analysis

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Characterization of elastic modulus and hardness of brittle solids by instrumented indentation

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Acta Mechanica Sinica 2025年第1期41卷 141-162页

作者： Zhitong Xu ming liu Jianghong Gong Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou 350108China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

The reduced elastic modulus Er and indentation hardness HIT of various brittle solids including ceramics,semiconductors,glasses,single crystals,and laser material were evaluated using *** analysis procedures were compared such as Oliver&Pharr and nominal hardness-based methods,which require area function of the indenter,and other methods based on energy,displacement,contact depth,and contact stiffness,which do not require calibration of the *** recovery of the imprint by the Knoop indenter was also utilized to evaluate elastic moduli of brittle *** relating HIT/Er and dimensionless nanoindentation variables(e.g.,the ratio of elastic work over total work and the ratio of permanent displacement over maximum displacement)are found to be nonlinear rather than linear for brittle *** plastic hardness Hp of brittle solids(except traditional glasses)extracted based on Er is found to be proportional to E_(r)√H_(IT).

关键词： Brittle solids Nanoindentation Elastic modulus Hardness Elastic recovery of Knoop imprint

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Correlation between psychological,family social support,and home nursing quality for an implanted venous access port

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World Journal of Psychiatry 2025年第2期15卷 130-139页

作者： Heng-Ya Jia Li-qun Yan Xiao-Bei liu Jie Cao Department of Emergency The First Affiliated Hospital of Naval Medical UniversityShanghai 200433China Department of Neuropsychology The First Affiliated Hospital of Naval Medical UniversityShanghai 200433China Department of Urology The First Affiliated Hospital of Naval Medical UniversityShanghai 200433China

BACKGROUND Cancer patients with an implanted venous access port(IVAP)often manage their care at home during chemotherapy intervals,including maintaining the device,monitoring complications,and following medication *** care ensures continued support after ***,due to factors such as age,gender,culture,psychological status,and family support,the quality of home care varies *** these factors can help provide targeted guidance to improve the care of cancer *** To explore IVAP chemotherapy on home care quality and its association with mental health and family support for cancer *** This investigative study was based on a medical records *** investigated the relationship between psychological status,family support,and home care quality in 180 patients with cancer undergoing IVAP *** status was assessed using the State Anxiety Inventory(S-AI);family support was assessed using the Perceived Social Support Scale(PSSS),and home care quality was evaluated using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire(EORTC QLQ-C30).Pearson’s correlation and Structural Equation Modeling were used to analyze the interplay between these *** The average S-AI score was 47.52±14.47,PSSS was 52.48±12.64,and EORTC QLQ-C30 was 70.09±17.32.A substantial inverse relationship was observed between the EORTC QLQ-C30 and S-AI scores(r=-0.712).A significant positive correlation was found between the EORTC QLQ-C30 and the PSSS,with a correlation coefficient of(r=0.744).The multiple linear regression analysis indicated that family social support,psychological status,and average monthly family income were the main factors influencing the variation in the quality of home care,explaining 71.9%of the *** Structural Equation Modeling results indicated that psychological status acted as a partial mediator in the association between family soci

关键词： Implanted venous access port Cancer patient Home nursing life quality Family social support Psychological status

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The circadian clock affects starvation resistance through the pentose phosphate pathway in silkworm,Bombyx mori

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Insect Science 2025年第1期32卷 55-68页

作者： Tai-ming Dai Jian-Feng Qiu Cheng Luo Wen-Zhao Cui Kai liu Jiang-Lan Li Ruji Peng Yang-Hu Sima Shi-Qing Xu School of Life Sciences Suzhou Medical College of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Agricultural Biotechnology&Ecology(IABE) Soochow UniversitySuzhouJiangsu ProvinceChina

Disruption of the circadian clock can affect starvation resistance,but the molecular mechanism is still ***,we found that starvation resistance was significantly reduced in the core gene BmPer deficient mutant silkworms(Per−/−),but the mutant's starvation resistance increased with larval *** natural physiological conditions,the weight of mutant 5th instar larvae was significantly increased compared to wild type,and the accumulation ability of triglycerides and glycogen in the fat bodies was ***,under starvation conditions,the weight consumption of mutant larvae was increased and cholesterol utilization was *** analysis showed that beta-oxidation was significantly upregulated under starvation conditions,fatty acid synthesis was inhibited,and the expression levels of genes related to mitochondrial function were significantly *** investigations revealed that the redox balance,which is closely related to mitochondrial metabolism,was altered in the fat bodies,the antioxidant level was increased,and the pentose phosphate pathway,the source of reducing power in cells,was *** findings suggest that one of the reasons for the increased energy burden observed in mutants is the need to maintain a more robust redox balance in metabolic *** necessitates the diversion of more glucose into the pentose phosphate pathway to ensure an adequate supply of reducing power.

关键词： Bombyx mori circadian clock oxidative stress pentose phosphate pathway starvationresistance

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Great influence of demagnetization history on internal interaction and magnetization process of mischmetal-based magnets

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 183-192页

作者： Dan liu Jiefu Xiong Lichen Wang Xinqi Zheng Xin ming Jiaying Jin Jiazheng Hao He Bai Zhenxing Li Tongyun Zhao Fengxia Hu Jirong Sun Jun Shen Baogen Shen Department of Physics Beijing Technology and Business UniversityBeijing 10048China Ningbo Institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 31521China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China Spallation Neutron Source Science Center Dongguan 523803China School of Mechanical Engineering Beijing Institute of Technology Beijing 100081China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 101408China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

The magnetization process and corresponding magnetization curve are usually used to analyze the coercivity mechanism of NdFe-B based sintered ***,different demagnetization histories will seriously influence the magnetization curve,leading to an inaccurate understanding and analysis of magnetization *** this work,we investigated the magnetization behavior of multi-main phase(MMP)magnets with thermal demagnetized and alternating current demagnetized *** curves of initial magnetization process and demagnetization process of thermal demagnetized magnets reflect the movement of domain walls inside the grains and the magnetization interaction between the grains,*** is noted that the former process cannot represent the magnetization reversal of the entire magnet,which is not appropriate to analyze coercivity mechanism *** the recoil curves of both two processes of AC demagnetized magnets can illustrate the magnetization reversal of the entire grains and the interaction between ***-optical Kerr microscope shows that the grains of thermal demagnetized magnets are in multi-domain states,and the grains of AC demagnetized magnets are almost in singledomain *** walls of thermal demagnetized magnets move easily within the grains,which is more conducive to magnetization saturation in industrial *** addition,the minorloops of thermal demagnetized magnets can independently represent the transition of grains from multi-domain to single-domain and the demagnetization of single-domain grains,which is equivalent to characterizing the internal interactions by recoil *** investigation of magnetization characteristics of MMP sintered magnets starting from different demagnetized states is helpful to further understand the internal interaction and magnetic hardening mechanism.

关键词： permanent magnet demagnetization history magnetization reversal misch-metal rare earth

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Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen ming-ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng Yun-Dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines(Chinese Academy of Sciences) Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical OncogenomicsPeking University Shenzhen Graduate SchoolShenzhen 518055China Shenzhen Bay Laboratory Shenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Microbial Metabolism School of Life Sciences&BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical UniversityGuiyang 550014China Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest ChinaKunming Institute of BotanyChinese Academy of SciencesKunming 650201China Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical SciencesBeijing 100730China

In the intricate process of natural product biosynthesis,a metabolon can enhance metabolic flux by associating sequential enzymes.A fungal metabolon,comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G,is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide *** notoamide E as a substance,Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation,followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium ***,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol *** provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

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