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Melting Evaluation of Phase Change Materials Impregnated into Cascaded Metal Foams with Regionalized Enhancement

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Journal of Thermal Science 2025年第1期34卷 223-241页

作者： WEI Xinyi ZHANG nan ZHANG Zhaoli CAO Xiaoling YUAN Yanping School of Mechanical Engineering Southwest Jiaotong University

Metal foam promotes the heat transfer of phase change materials(PCMs) in the penalty of reducing the energy storage density of the composite *** this work,the effects of constant porosity(0.96,0.94,0.92,or 0.90) and pore density(PPI) of metal foam on heat transfer of composite PCMs are *** rate could be enhanced by employing with low porosity copper ***,aiming to the right bottom phase changing "dead region",a regionalized enhancement strategy of cascaded metal foams is *** dynamic melting performances of all the composite PCMs are comprehensively *** results reveal that the cascaded configuration is beneficial for *** show that the horizontal strategy enhances melting performance:a maximum of 17.98% reduction in total melting time could be reached when the rear part porosity is 90%.The energy storage density rate could be raised by 5.48%.Besides,the vertical strategy performs with a better average temperature uniformity of 0.441 and brings a lower temperature in the heated *** sum up,the regionalized enhancement of copper foam provides better performance in the phase change *** shows significant potential for solar heat storage and thermal protection.

关键词： copper metal foam heat transfer enhancement phase change materials regionalized enhancement

Instability of single-walled carbon nanotubes conveying Jeffrey fluid

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Chinese Physics B 2021年第4期30卷 328-332页

作者： bei-nan Jia Yong-Jun Jian School of Mathematical Science Inner Mongolia UniversityHohhot 010021China

We report instability of the single-walled carbon nanotubes(SWCNT) filled with non-Newtonian Jeffrey *** objective is to get the influences of relaxation time and retardation time of the Jeffrey fluid on the vibration frequency and the decaying rate of the amplitude of carbon *** elastic Euler-Bernoulli beam model is used to describe vibrations and structural instability of the carbon nanotubes.A new vibration equation of an SWCNT conveying Jeffrey fluid is first derived by employing Euler-Bernoulli beam equation and Cauchy momentum equation taking constitutive relation of Jeffrey fluid into *** complex vibrating frequencies of the SWCNT are computed by solving a cubic eigenvalue problem based upon differential quadrature method(DQM).It is interesting to find from computational results that retardation time has significant influences on the vibration frequency and the decaying rate of the ***,the vibration frequency decreases and critical velocity increases with the retardation *** is to say,longer retardation time makes the SWCNT more stable.

关键词： single-walled carbon nanotubes Jeffrey fluid relaxation time retardation time

Cholesterol gallstones:Focusing on the role of interstitial Cajal-like cells

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World Journal of Clinical Cases 2021年第15期9卷 3498-3505页

作者： bei-bei Fu Jian-nan Zhao Shuo-Dong Wu Ying Fan Department of Health Management Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina Department of General Surgery Shengjing Hospital of China Medical UniversityShenyang 110004Liaoning ProvinceChina

with a complex and multifactorial *** gallbladder motility reportedly contributes to CG ***,interstitial Cajal-like cells(ICLCs)are reportedly present in human and guinea pig gallbladder *** potentially contribute to the regulation of gallbladder motility,and aberrant conditions involving the loss of ICLCs and/or a reduction in its pacing potential and reactivity to cholecystokinin may promote CG *** review discusses the association between ICLCs and CG pathogenesis and provides a basis for further studies on the functions of ICLCs and the etiologies of CG.

关键词： Interstitial Cajal-like cells Cholesterol gallstones Gallbladder motility Biliary system disease Gallstones

Normalized Solutions of Nonlinear Choquard Equations with Nonconstant Potential

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应用数学 2025年第1期38卷 14-29页

作者： LI nan XU Liping School of Mathematics and Statistics Henan University of Science and TechnologyLuoyang 471000China

In this paper,we mainly focus on a type of nonlinear Choquard equations with nonconstant *** appropriate hypotheses on potential function and nonlinear terms,we prove that the above Choquard equation with prescribed 2... 详细信息

关键词： Nonlinear Choquard equation Potential function Variational method Normalized solution

A Sensing Layer Network Resource Allocation Model Based on Trusted Groups

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China Communications 2019年第10期16卷 151-173页

作者： bei Gong Xipeng Zhang Shen He nan Tian Yubo Wang Faculty of Information Technology Beijing University of TechnologyBeijing 100124China China Mobile Research Institute Beijing 100055China 91977 PLA(The People’s Liberation Army) beijing 10000 China

There are many heterogeneous sensing nodes in the sensing layer of the Internet of Things, and the amount of data transmission is huge, which puts high requirements on the allocation of network bandwidth. At the same time, untrusted sensing nodes maliciously invade network resources. Therefore, how to confirm whether a sensing node is trusted and reasonably allocate network resources is an urgent problem to be solved. To resolve this issue, this paper proposes a sensing network resource allocation model based on trusted groups. Through the sensing node computing environment and behavior measurement, we can identify and exclude untrusted nodes, so the trusted group can be built. Then the network resources are distributed from a global perspective. Based on the available bandwidth of the link, a network resource fusion model of IPv4 and IPv6 is proposed. On this basis, a global network resource allocation model is further proposed. Afterwards, real-time monitoring of data transmission behavior ensures data security during transmission. Simulation experiments show that this mechanism can effectively optimize the bandwidth allocation in the data transmission process and has little effect on the running efficiency of existing network applications. At the same time, it can effectively guarantee the trust of nodes and achieve trusted data transmission.

关键词： internet of things trust measurement link bandwidth network resource allocation data transmission

The Essential 2-rank for Classical Groups

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Acta Mathematica Sinica,English Series 2024年第9期40卷 2169-2186页

作者： Jian bei AN Yong XU Department of Mathematics University of AucklandAucklandNew Zealand School of Mathematics and Statistics He’nan University of Science and TechnologyLuoyang 471023P.R.China

Let G be a symplectic or orthogonal group defined over a finite field with odd characteristic and let D≤G be a Sylow *** this paper,we classify the essential 2-subgroups and determine the essential 2-rank of the Frobenius category FD(G).Together with the results of An–Dietrich and Cao–An–Zeng,this completes the work of essential subgroups and essential ranks of classical groups.

关键词： Frobenius category conjugation families essential 2-rank symplectic groups orthogonal groups

Separation of the ionospheric and thermospheric contributions in the data from the Triple Ionosophere Photo Meter onboard the Feng-Yun 3E satellite

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Science China Earth Sciences 2025年第1期68卷 172-184页

作者： Fang JIANG Tian MAO Jin-Song WANG Xiu-Qing HU Xiao-Xin ZHANG Liping FU nan JIA Tianfang WANG National Space Science Center Chinese Academy of Sciences beijing Key Laboratory of Space Environment Exploration Key Laboratory of Environmental Space Situation Awareness Technology National Satellite Meteorological Center China Meteorological Administration

The Triple Ionosphere Photo Meter （TRIPM） is a far ultraviolet nadir-view photometer that is onboard the secondgeneration,polar-orbiting Chinese meteorological satellite Feng-Yun 3E （FY-3E）,which was launched on July 5,*** has three channels,and each is used to measure different types of emissions:（1） 135.6 nm airglow produced by the recombination of the O+ions and electrons in the absence of sunlight （nighttime channel）;（2） 135.6 nm airglow from the OI when sunlight is present （daytime/dusk-dawn 135.6 nm channel）;and （3） Airglow in the N2LBH of the TRIPM （daytime/dusk-dawn N2LBH channel）.FY-3E is a satellite operating in the early morning ***,the data are mostly distributed on the dawndusk side or at times when the solar zenith angle is relatively *** this study,combined with simulation calculations,the data are *** further explore the application value of the data products,a model is used to separate the ionospheric radiative recombination contribution from the thermosphere photoelectron impact excitation contribution in the data from the daytime/dusk-dawn 135.6 nm *** approach not only improves the accuracy of O/N2derived from the 135.6 nm channel and N2LBH channel but also provides the ionospheric 135.6 nm radiance at the same time as the *** results show that the 135.6 nm radiance originating from the combination of O+and electrons extracted from the measurement data exhibits similar equatorial anomaly peak structure characteristics and seasonal variations as the corresponding GPS total electron content （TEC） *** the other hand,the separated 135.6 nm radiance generated from the thermosphere photoelectron collision excitation does not contain radiative recombination contributions;thus,the ionosphere influence is greatly avoided when the O/N2is obtained.

关键词： Far ultraviolet 135.6 nm emission intensity Photoelectron impact excitation Radiative recombination excitation

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Microglia lactylation in relation to central nervous system diseases

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Neural Regeneration Research 2025年第1期20卷 29-40页

作者： Hui Yang nan Mo Le Tong Jianhong Dong Ziwei Fan Mengxian Jia Juanqing Yue Ying Wang School of Pharmacy Hangzhou Normal UniversityHangzhouZhejiang ProvinceChina Department of Clinical Laboratory The Fourth Clinical Medical College of Zhejiang University of Traditional Chinese Medicine(Hangzhou First People’s Hospital)HangzhouZhejiang ProvinceChina College of Medical Veterinary and Life SciencesUniversity of GlasgowGlasgowUK Department of Orthopedics(Spine Surgery) the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang ProvinceChina Department of Pathology Affiliated Hangzhou First People’s HospitalWestlake University School of MedicineHangzhouZhejiang ProvinceChina Department of Clinical Research Center Affiliated Hangzhou First People’s HospitalWestlake University School of MedicineHangzhouZhejiang ProvinceChina

The development of neurodegenerative diseases is closely related to the disruption of central nervous system ***,as innate immune cells,play important roles in the maintenance of central nervous system homeostasis,injury response,and neurodegenerative *** has been considered a metabolic waste product,but recent studies are revealing ever more of the physiological functions of *** is an important pathway in lactate function and is involved in glycolysis-related functions,macrophage polarization,neuromodulation,and angiogenesis and has also been implicated in the development of various *** review provides an overview of the lactate metabolic and homeostatic regulatory processes involved in microglia lactylation,histone versus non-histone lactylation,and therapeutic approaches targeting ***,we summarize the current research on microglia lactylation in central nervous system diseases.A deeper understanding of the metabolic regulatory mechanisms of microglia lactylation will provide more options for the treatment of central nervous system diseases.

关键词： brain central nervous system glycolysis immune response inflammation lactate metabolism lactate lactylation microglia neurodegenerative diseases

Hippo/YAP signaling pathway is involved in osteosarcoma chemoresistance

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Chinese Journal of Cancer 2016年第7期35卷 366-373页

作者： Dong-Yu Wang Ya-nan Wu Jun-Qi Huang Wei Wang Meng Xu Jin-Peng Jia Gang Han bei-bei Mao Wen-Zhi Bi Department of Orthopaedics and Rehabilitation PLA General Hospital State Key Laboratory of Brain and Cognitive Sciences Institute of BiophysicsChinese Academy of Sciences

Background:Osteosarcoma is the most common bone malignancy in children and adolescents,and 20%-30%of the patients suffer from poor prognosis because of individual *** Hippo/yes-associated protein(YAP) signaling pathway has been shown to play a role in tumor chemoresistance,but no previous report has focused on its involvement in osteosarcoma *** study aimed to investigate the role of the Hippo/YAP signaling pathway in osteosarcoma chemoresistance and to determine potential treatment ***:Using the Cell Titer-Glo Luminescent cell viability assay and flow cytometry analysis,we determined the proliferation and chemosensitivity of YAP-overexpressing and YAP-knockdown osteosarcoma *** addition,using western blotting and the real-time polymerase chain reaction technique,we investigated the alteration of the Hippo/YAP signaling pathway in osteosarcoma cells treated with chemotherapeutic ***:Mammalian sterile 20-like kinase 1(MST1) degradation was increased,and large tumor suppressor kinase1/2(LAT51/2) total protein levels were decreased by methotrexate and doxorubicin,which increased activation and nuclear translocation of ***,YAP increased the proliferation and chemoresistance of MG63 ***:The Hippo/YAP signaling pathway plays a role in osteosarcoma chemoresistance,and YAP is a potential target for reducing chemoresistance.

关键词：肿瘤耐药信号通路骨肉瘤河马化疗流式细胞仪分析聚合酶链反应技术信号转导通路