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Modification of Maxwell model for conductivity prediction of carbon nanotubes-filled polymer composites with tunneling effect

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 25-36页

作者： Jue zhu Longyuan LI Ningtao zhu Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline Key Laboratory of Impact and Safety Engineering (Ningbo University) Ministry of Education School of Engineering Computing and Mathematics University of Plymouth Xi'an Zhanshi Testing & Engineering Co.Ltd.

Carbon nanotubes(CNTs) have garnered great attention in recent years due to their outstanding electrical, thermal, and mechanical properties. The incorporation of small amounts of CNTs in polymers can substantially improve the sensitivity of the polymer's electrical conductivity. This paper presents a modified Maxwell model to evaluate the electrical conductivity of CNTs-filled polymer composites by introducing a transition zone to account for the tunneling effect. In this modified Maxwell model, the CNTs-filled polymer composite is modeled as a three-phase composite, consisting of a matrix(polymer), inclusions(CNTs), and a transition zone(tunneling zone). The effective electrical conductivity(EEC) of the composite is calculated based on the volume fractions and electrical conductivities of the matrix, inclusions, and transition zone. The model's validity is confirmed through the use of available test data, which demonstrates its capability to accurately capture the nonlinear conductivity behavior observed in CNTs-polymer composites. This study offers valuable insights into the design of high-performance conductive polymer nanocomposites, and enhances the understanding of electrical conduction mechanisms in CNT-dispersed polymer composites.

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Impacts of the annual cycle of background SST in the tropical Pacific on the phase and amplitude of ENSO

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 12-17页

作者： Song Jiang Congwen zhu Ning Jiang State Key Laboratory of Severe Weather(LASW) Chinese Academy of Meteorological SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The dominant annual cycle of sea surface temperature(SST)in the tropical Pacific exhibits an antisymmetric mode,which explains 83.4%total variance,and serves as a background of El Niño-Southern Oscillation(ENSO).However,there is no consensus yet on its anomalous impacts on the phase and amplitude of *** on data during 1982-2022,results show that anomalies of the antisymmetric mode can affect the evolution of ENSO on the interannual scale via Bjerknes feedback,in which the positive(negative)phase of the antisymmetric mode can strengthen El Niño(La Niña)in boreal winter via an earlier(delayed)seasonal cycle transition and larger(smaller)annual *** magnitude of the SST anomalies in the equatorial eastern Pacific can reach more than±0.3◦C,regulated by the changes in the antisymmetric mode based on random sensitivity *** reveal the spatial pattern of the annual cycle associated with the seasonal phase-locking of ENSO evolution and provide new insight into the impact of the annual cycle of background SST on ENSO,which possibly carries important implications for forecasting ENSO.

关键词： Annual cycle SST anomaly Antisymmetric mode ENSO

Satellite remote sensing reveals overwhelming recovery of forest from disturbances in Asia

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 46-51页

作者： Yiying zhu Hesong Wang Anzhi Zhang School of Ecology and Nature Conservation Beijing Forestry UniversityBeijingChina Key Laboratory of Regional Climate and Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Forestry and Landscape Architecture Xinjiang Agricultural UniversityUrumqiChina

Forest ecosystems play key roles in mitigating human-induced climate change through enhanced carbon uptake;however,frequently occurring climate extremes and human activities have considerably threatened the stability of *** the same time,detailed accounts of disturbances and forest responses are not yet well quantified in *** study employed the Breaks For Additive Seasonal and Trend method-an abrupt-change detection method-to analyze the Enhanced Vegetation Index time series in East Asia,South Asia,and Southeast *** approach allowed us to detect forest disturbance and quantify the resilience after *** showed that 20%of forests experienced disturbance with an increasing trend from 2000 to 2022,and Southeast Asian countries were more severely affected by ***,95%of forests had robust resilience and could recover from disturbance within a few *** resilience of forests suffering from greater magnitude of disturbance tended to be stronger than forests with lower disturbance *** summary,this study investigated the resilience of forests across the low and middle latitudes of Asia over the past two *** authors found that most forests exhibited good resilience after disturbance and about two-thirds had recovered to a better state in *** findings of this study underscore the complex relationship between disturbance and resilience,contributing to comprehension of forest resilience through satellite remote sensing.

关键词： Forest ecosystem Enhanced vegetation index Breaks for additive seasonal and trend method Disturbance Resilience

无痛病房建立对减轻骨科手外伤患者疼痛的临床应用研究

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中国医学创新 2017年第27期14卷 78-81页

作者：韦贵珠黄娟娟龙艳珍广西河池市人民医院广西河池547000

目的:探讨在骨科建立无痛病房对减轻手外伤患者疼痛的效果。方法:选取2014年1-12月建立无痛病房前手外伤围手术期患者150例为对照组,选取2015年1月-2016年6月建立无痛病房后150例手外伤围手术期患者为观察组,两组入院时均进行首次疼痛评... 详细信息

目的:探讨在骨科建立无痛病房对减轻手外伤患者疼痛的效果。方法:选取2014年1-12月建立无痛病房前手外伤围手术期患者150例为对照组,选取2015年1月-2016年6月建立无痛病房后150例手外伤围手术期患者为观察组,两组入院时均进行首次疼痛评分,观察组在骨科常规治疗的基础上手术,当天及术后3 d通过三阶梯镇痛方案,采取多模式、超前、按时+按需给药以及缓节律呼吸法等无痛治疗管理;对照组按骨科常规治疗护理即在患者疼痛剧烈时按需给药。记录两组在术后3 h^3 d的疼痛评分,发放镇痛效果满意调查表,并对两组断指再植及皮瓣移植成活情况进行分析比较。结果:两组患者入院时疼痛评分比较,差异无统计学意义(P>0.05);观察组实施无痛管理后疼痛评分明显低于对照组(P<0.01),满意度明显高于对照组(P<0.01),断指再植及皮瓣移植存活率均明显优于对照组(P<0.01)。结论:无痛病房的建立可减轻患者疼痛程度,提高手术成功率,增加患者舒适度,提高住院满意度。

关键词：无痛病房手外伤疼痛控制

Rational design of heterogeneous catalysts by breaking and rebuilding scaling relations

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Chinese Journal of Chemical Engineering 2022年第1期35卷 22-28页

作者： wei-Qi Yan Yi-An zhu Xing-gui Zhou wei-Kang Yuan State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China

Various scaling relations have long been established in the field of heterogeneous catalysis,but the resultant volcano curves inherently limit the catalytic performance of catalyst *** the other hand,it is still very challenging to develop universal descriptors that can be used in various types of catalysts and reaction *** these reasons,several strategies have recently been proposed to break and rebuild scaling relations to go beyond the top of *** this review,some previously proposed descriptors have been briefly ***,the strategies for breaking known and establishing new and more generalized scaling relations in complex catalytic systems have been ***,the application of machine-learning techniques in identifying universal descriptors for future computational design and high-throughput screening of heterogeneous catalysts has been discussed.

关键词： Density functional theory(DFT) Heterogeneous catalysis Microkinetic analysis Scaling relations

“Slope-adsorption & plateau-pore filling” mechanism unlocking the potential of hard carbon anodes for “fast-charging & large-sized”batteries

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Science China Materials 2025年第1期 309-311页

作者： Tian Liang Xiaoming zhu Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry & Biology Hubei University of Science and Technology

To date, there has been no report on fast-charging and Ahlevel sodium-ion batteries (SIBs) by utilizing thick hard carbon anodes that demonstrate prolonged cycling life and high areal capacity at high rates. Further, the relationship among the complex structure of hard carbon, storage mechanism, and fastcharging performance in alkali-metal ion batteries has been a subject of ongoing debate [1,2].

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Influence of TiO2 on the melting property and viscosity of Cr-containing high-Ti melting slag

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International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 310-318页

作者： Jing Ma gui-qin Fu wei Li Miao-yong zhu School of Metallurgy Northeastern University

A study on the melting and viscosity properties of the chromium-containing high-titanium melting slag(CaO–SiO2–MgO–Al2O3–TiO2–Cr2O3) with TiO2 contents ranging from 38.63 wt% to 42.63 wt% was conducted. The melting properties were investigated with a meltingpoint apparatus, and viscosity was measured using the rotating cylinder method. The FactSage 7.1 software and X-ray diffraction, in combination with scanning electron microscopy–energy-dispersive spectroscopy(SEM–EDS), were used to characterize the phase equilibrium and microstructure of chromium-containing high-titanium melting slags. The results indicated that an increase in the TiO2 content led to a decrease in the viscosity of the chromium-containing high-titanium melting slag. In addition, the softening temperature, hemispheric temperature, and flowing temperature decreased with increasing TiO2 content. The amount of crystallized anosovite and sphene phases gradually increased with increasing TiO2 content, whereas the amount of perovskite phase decreased. SEM observations revealed that the distribution of the anosovite phase was dominantly influenced by TiO2.

关键词： titanium dioxide Cr-containing high-titanium melting slag melting property viscosity vanadium titanomagnetite

泡沫敷料联合自粘性无菌敷料用于预防小儿皮牵引发生压疮的效果观察

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智慧健康 2019年第20期5卷 177-178,180页

作者：莫昌鸾韦贵珠黄娟娟广西河池市人民医院

目的观察泡沫敷料联合自粘性无菌敷料在预防小儿皮牵引发生压疮的临床效果。方法将100例需要进行皮牵引的患儿按护理模式的不同分为A、B两组,其中A组作为对照组,50例采用传统方法进行皮牵引术的患儿,亦在皮牵引套内使用软毛巾或棉垫,预... 详细信息

目的观察泡沫敷料联合自粘性无菌敷料在预防小儿皮牵引发生压疮的临床效果。方法将100例需要进行皮牵引的患儿按护理模式的不同分为A、B两组,其中A组作为对照组,50例采用传统方法进行皮牵引术的患儿,亦在皮牵引套内使用软毛巾或棉垫,预防足跟及踝部压疮的发生;另50例为B组(实验组),该组患儿则是在A组的前提下使用泡沫敷料联合自粘性无菌敷料粘贴住足跟及踝关节处皮肤进一步预防压疮发生。记录两组患儿发生压疮的情况,评价此次研究效果。结果 B组患儿发生压疮例数低于A组,两组差异有统计学意义(P<0.05);B组患儿家属对护理各方面满意度高于A组(P<0.05)。结论泡沫敷料联合自粘性无菌敷料用于预防小儿皮牵引发生压疮取得良好效果,能减轻患儿疼痛,促进患儿康复,提高患儿家属护理满意度。

关键词：压疮下肢皮牵引术泡沫敷料效果

The emerging role of nitric oxide in the synaptic dysfunction of vascular dementia

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Neural Regeneration Research 2025年第2期20卷 402-415页

作者： Xiaorong Zhang Zhiying Chen Yinyi Xiong Qin Zhou Ling-Qiang zhu Dan Liu Department of Pathology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Jiujiang Clinical Precision Medicine Research Center JiujiangJiangxi ProvinceChina Center for Cognitive Science and Transdisciplinary Studies Jiujiang UniversityJiangxi ProvinceChina Department of Neurology Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Rehabilitation Affiliated Hospital of Jiujiang UniversityJiujiangJiangxi ProvinceChina Department of Pathophysiology School of Basic MedicineTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei ProvinceChina

With an increase in global aging,the number of people affected by cerebrovascular diseases is also increasing,and the incidence of vascular dementia-closely related to cerebrovascular risk-is increasing at an epidemic ***,few therapeutic options exist that can markedly improve the cognitive impairment and prognosis of vascular dementia *** in Alzheimer’s disease and other neurological disorders,synaptic dysfunction is recognized as the main reason for cognitive *** oxide is one of the ubiquitous gaseous cellular messengers involved in multiple physiological and pathological processes of the central nervous ***,nitric oxide has been implicated in regulating synaptic plasticity and plays an important role in the pathogenesis of vascular *** review introduces in detail the emerging role of nitric oxide in physiological and pathological states of vascular dementia and summarizes the diverse effects of nitric oxide on different aspects of synaptic dysfunction,neuroinflammation,oxidative stress,and blood-brain barrier dysfunction that underlie the progress of vascular ***,we propose that targeting the nitric oxide-sGC-cGMP pathway using certain specific approaches may provide a novel therapeutic strategy for vascular dementia.

关键词： endoplasmic reticulum stress endothelial nitric oxide synthase gene therapy nitric oxide NO-sGC-cGMP pathway synaptic dysfunction vascular dementia