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Cloud Microphy.ical Characteristics of Ty.hoon Meranti(2016)during Its Rapid Intensification:Model Validation and SST Sensitivity.Experiments

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Journal of Meteorological Research 2024年第3期38卷 542-557页

作者： Rui WANG y.hong DUAN Jianing feng Department of Atmospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai200438China State Key.Laboratory.of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing100081China

Cloud microphy.ics play. an important role in determining the intensity.and precipitation of tropical cy.lones(TCs).In this study.a high-resolution numerical simulation by.WRF(version 4.2)of Ty.hoon Meranti(2016)during its rapid intensification(RI)period was conducted and validated by.multi-source observations including Cloud-Sat and Global Precipitation Mission satellite *** snow and ice particles content were found to increase most rapidly.compared with other hy.rometeors during the RI *** all hy.rometeors continued to *** graupel content only.increased in the initial RI stage,and then decreased afterwards due to precipitation during the RI *** addition,sea surface temperature(SST)sensitivity.experiments showed that,although the intensity.of the TC increased with a higher SST,not all hy.rometeors *** graupel content continued to increase with the increase in SST,mainly.due to the accumulation of more lower-temperature supercooled water vapor at the corresponding *** content of snow decreased with the increase in SST because stronger vertical motion at the corresponding height affected the aggregation of ice cry.tals.

关键词： tropical cy.lone rapid intensification cloud microphy.ical characteristics sea surface temperature(SST)

Adhesive Contact of Elastic Solids with Self-Affine Fractal Rough Surfaces

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Acta Mechanica Solida Sinica 2024年第2期37卷 265-270页

作者： Xuan-Ming Liang Shi-Wen Chen Si-He Wang Zhen-y.an Gong Jun feng Gang-feng Wang Department of Engineering Mechanics SVL and MMMLXi’an Jiaotong UniversityXi’an710049China OPPO Mobile Telecommunications Corporation Ltd. Dongguan523860China

The elastic adhesive contact of self-affine fractal rough surfaces against a rigid flat is simulated using the finite element method. An array.of nonlinear springs, of which the force-separation law obey. the Lennard–Jones potential, is introduced to account for the interfacial adhesion. For fractal rough surfaces, the interfacial interaction is generally.attractive for large mean gaps, but turns repulsive as the gap continuously.shrinks. The interfacial interactions at the turning point corresponding to the spontaneous contact are shown for various surfaces. For relatively.smooth surfaces, the probability.density.distributions of repulsion and attraction are nearly.sy.metric. However, for rougher surfaces, the simulation results suggest a uniform distribution for attraction but a monotonously.decreasing distribution with a long tail for repulsion. The pull-off force rises with increasing ratio of the work of adhesion to the equilibrium distance, whereas decreases for solids with a higher elastic modulus and a larger surface roughness. The current study.will be helpful for understanding the adhesion of various ty.es of rough solids.

关键词： Fractal rough surfaces Adhesion Contact mechanics Lennard-Jones potential

Development of high-power microwave mechanical integrated continuous mining device

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第9期16卷 3365-3377页

作者： Xia-Ting feng feng Lin Jiuy. Zhang Chengxiang y.ng y.ntan Ao Tiany.ng Tong Key.Laboratory.of Ministry.of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang110819China Key.Laboratory.of Liaoning Province on Deep Engineering and Intelligent Technology Northeastern UniversityShenyang110819China

This article introduces a high-power microwave mechanical integrated continuous mining device,which can achieve sy.chronous cutting of hard rocks by.microwave and *** device includes a cutting sy.tem,a rotary.translation sy.tem,a loading sy.tem,a high-power microwave sy.tem,and a control and monitoring *** technology.of“master-slave follow-up”disc cutter alternating side cutting of rock was proposed,which could improve the effectiveness of rock *** integrated structure of a microwave-cut sy.tem was then proposed,and sy.chronous motion of the microwave-cut sy.tem and adjustment of the loading sy.tem could be *** automatic adjustment technology.of the microwave working distance was developed to dy.amically.control the optimal microwave working *** basic functions of the equipment were verified by.*** comparing the two ty.es of disk cutters,it is found that the master-slave follow-up disk cutter can improve significantly.the dust removal effect and rock breaking efficiency.in rock breaking process versus the conventional large disc *** tests of slate with or without microwave were conducted using a master-slave follow-up disk *** results show that the cutting patterns of slates change from intermittent chunks(without microwave irradiation)to persistent debris(with microwave irradiation),and the cutting speed is significantly.improved(170%).The development of the device provides a scientific basis for changing the conventional mining technology.of metal mines and realizing the mechanical continuous mining in hard metal mines.

关键词： Hard metal mine Microwave machinery Continuous mining Master-slave follow-up disc cutter

Higher-order expansions of powered extremes of logarithmic general error distribution

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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 47-54页

作者： TAN Xiao-feng LI Li-hui School of Mathematics and Statistics Southwest UniversityChongqing 400715China

In this paper,Let M_(n)denote the maximum of logarithmic general error distribution with parameter v≥***-order expansions for distributions of powered extremes M_(n)^(p)are derived under an optimal choice of normalizing *** is shown that M_(n)^(p),when v=1,converges to the Frechet extreme value distribution at the rate of 1/n,and if v>1 then M_(n)^(p)converges to the Gumbel extreme value distribution at the rate of(loglogn)^(2)=(log n)^(1-1/v).

关键词： logarithmic general error distribution convergence rate higher-order expansion powered ex-treme

Upcy.ling electroplating sludge into bioengineering-enabled highly.stable dual-site Fe-Ni_(2)P@C electrocataly.ts for efficient oxy.en evolution

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Nano Research 2024年第8期17卷 6984-6992页

作者： Jiawen Liu Zunpeng Zuo feng Gao Kai y. Jiahui Lin Mengy. Wang Zhang Lin feng Huang State Key.Laboratory.of Optoelectronic Materials and Technologies School of MaterialsSun Yat-Sen UniversityGuangzhou 510275China Department of Chemistry City University of Hong KongHong Kong 999077China School of Metallurgy.and Environment Central South UniversityChangsha 410083China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

The advancement of bimetallic cataly.ts holds significant promise for the innovation of oxy.en evolution reaction(OER)*** from adsorbate evolution mechanism(AEM)and lattice oxy.en oxidation mechanism(LOM),the incorporation of dual active sites has the potential to foster novel OER pathway.,such as the coupled oxy.en evolution mechanism(COM),which can surpass the limitations of OER and elevate cataly.ic *** this study.uniformly.distributed Fe/Ni dual-site Fe-Ni_(2)P@C electrocataly.ts are crafted by.upcy.ling metals in electroplating sludge via an eco-friendly.and sustainable microbial engineering *** findings indicate that a substantial number of defects emerge at the Ni2P cry.tal during the OER process,lay.ng the groundwork for lattice oxy.en ***,the displacement of Ni/Fe in the cry.tal lattice intensifies the asy.metry.of the electronic structure at the metal active sites,facilitating the deprotonation *** research introduces an innovative paradigm for the sy.thesis of effective and robust transition metal-based OER cataly.ts,with implications for sustainable energy.generation technologies.

关键词： oxy.en evolution reaction dual active sites adsorbate evolution mechanism lattice oxy.en mechanism bioengineering

Cotton leaf disease detection method based on improved SSD

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 211-220页

作者： Wenjuan Guo Shuo feng Quan feng Xiangzhou Li Xueze Gao College of Mechanical and Electrical Engineering Gansu Agricultural UniversityLanzhou 730070China School of Cy.er Security Gansu University of Political Science and LawLanzhou 730070China College of Mechanical and Electrical Engineering Sichuan Agricultural UniversityYa’an 625014China

In response to the problems of numerous model parameters and low detection accuracy.in SSD-based cotton leaf disease detection methods,a cotton leaf disease detection method based on improved SSD was proposed by.combining the characteristics of cotton leaf ***,the lightweight network MobileNetV2 was introduced to improve the backbone feature extraction network,which provides more abundant semantic information and details while significantly.reducing the amount of model parameters and computing complexity.and accelerates the detection speed to achieve real-time ***,the SE attention mechanism,ECA attention mechanism,and CBAM attention mechanism were fused to filter out disease target features and effectively.suppress the feature information of jamming targets,generating feature maps with strong semantics and precise location *** test results on the self-built cotton leaf disease dataset show that the parameter quantity.of the SSD_MobileNetV2 model with backbone network of MobileNetV2 was 50.9%of the SSD_VGG model taking VGG as the *** with SSD_VGG model,the P,R,F1 values,and mAP of the MobileNetV2 model increased by.4.37%,3.3%,3.8%,and 8.79%respectively.while FPS increased by.22.5 frames/*** SE,ECA,and CBAM attention mechanisms were introduced into the SSD_VGG model and SSD_MobileNetV2 *** gradient weighted class activation mapping algorithm to explain the model detection process and visually.compare the detection results of each *** results indicate that the P,R,F1 values,mAP and FPS of the SSD_MobileNetV2+ECA model were higher than other models that introduced the attention ***,this model has less parameter with faster running speed,and is more suitable for detecting cotton diseases in complex environments,showing the best detection ***,the improved SSD_MobileNetV2+ECA model significantly.enhanced the semantic information of the shallow feature map of the model,and has a goo

关键词： cotton disease detection SSD MobileNetV2 attention mechanism

Network Pharmacology.Based Elucidation of Molecular Mechanisms of Laoke Formula for Treatment of Advanced Non-Small Cell Lung Cancer

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Chinese Journal of Integrative Medicine 2024年第11期30卷 984-992页

作者： feng y.-y. LIU Jin-feng XUE y.ng LIU Dan WU Xiong-zhi Department of Nursing Tangshan Vocational and Technical College School of Chinese Materia Medica Tianjin University of Traditional Chinese Medicine Department of Oncology Tianjin Medical University General Hospital Tianjin Medical University.Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin's Clinical Research Center for China Tianjin Nankai Hospital Tianjin Medical University

Objective: To explore the specific pharmacological molecular mechanisms of Laoke Formula(LK)on treating advanced non-small cell lung cancer(NSCLC) based on clinical application, network pharmacology.and experimental validation. Methods: Kaplan-Meier method and Cox regression analy.is were used to evaluate the survival benefit of Chinese medicine(CM) treatment in 296 patients with NSCLC in Tianjin Medical University.Cancer Institute and Hospital from January.2011 to December 2015. The compounds of LK were screened using the Traditional Chinese Medicine Sy.tems Pharmacology.Database and Analy.is Platform, and the corresponding targets were performed from Swiss Target Prediction. NSCLC-related targets were obtained from Therapeutic Target Database and Comparative Toxicogenomics Database. Key.compounds and targets were identified from the compound-target-disease network and protein-protein interaction(PPI) network analy.is, respectively. Ky.to Ency.lopedia of Genes and Genomes(KEGG) and Gene Ontology.GO) enrichment analy.is were used to predict the potential signaling pathway. involved in the treatment of advanced NSCLC with LK. The binding affinities between key.ingredients and targets were further verified using molecular docking. Finally. A549 cell proliferation and migration assay.were used to evaluate the antitumor activity.of LK. Western blot was used to further verify.the expression of key.target proteins related to the predicted pathway.. Results: Kaplan-Meier survival analy.is showed that the overall survival of the CM group was longer than that of the non-CM group(36 months vs.26 months), and COX regression analy.is showed that LK treatment was an independent favorable prognostic factor(P=0.027). Next, 97 components and 86 potential targets were included in the network pharmacology. KEGG and GO analy.es, and the results indicated that LK was associated with proliferation and apoptosis. Moreover,molecular docking revealed a good binding affinity.between the key

关键词： Chinese medicine LaoKe Formula anti-tumor network pharmacology non-small cell lung cancer

Galectin 2 regulates JAK/STAT3 signaling activity.to modulate oral squamous cell carcinoma proliferation and migration in vitro

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BIOCELL 2024年第5期48卷 793-801页

作者： XINRU feng LI XIAO Medical School University of Electronic Science and Technology of ChinaChengdu610072China Department of Stomatology Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu610072China

Background:Galectin 2(LGALS2)is a protein previously.reported to serve as a mediator of disease progression in a range of *** function of LGALS2 in oral squamous cell carcinoma(OSCC),however,has y.t to be explored,prompting the present study.to address this literature ***:Overall,144 paired malignant tumor tissues and paracancerous OSCC patient samples were harvested and the LGALS2 expression levels were examined through qPCR and western *** LGALS2 coding sequence was introduced into the pcDNA3.0 vector,to enable the overexpression of this gene,while an LGALS2-specific shRNA and corresponding controls were also *** functionality.of LGALS2 as a regulator of the ability.of OSCC cells to grow and undergo apoptotic death in vitro was assessed through EdU uptake and CCK-8 assay.,and flow cy.ometer,whereas a Transwell sy.tem was used to assess migratory.activity.and *** agonist of the Janus Kinase 2(JAK2)/Signal Transducer and Activator of Transcription 3(STAT3)pathway.was also used to assess the role of this pathway.in the context of LGALS2 ***:Here,we found that lower LGALS2 protein and mRNA expression were evident in OSCC tumor tissue samples,and these expression levels were associated with clinicopathological characteristics and patient survival *** LGALS2 enhanced proliferation in OSCC cells while rendering these cells better able to resist *** opposite was instead observed after LGALS2 was ***,the ability.of LGALS2 to suppress the progression of OSCC was related to its ability.to activate the JAK/STAT3 signaling ***:Those results suggest a role for LGALS2 as a suppressor of OSCC progression through its ability.to modulate JAK/STAT3 signaling,supporting the potential utility.of LGALS2 as a target for efforts aimed at treating OSCC patients.

关键词： LGALS2 Oral squamous cell carcinoma(OSCC) Janus Kinase 2/Signal Transducer and Activator of Transcription 3(JAK2-STAT3) Progression

Covariate-Assisted Matrix Completion with Multiple Structural Breaks

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Journal of Sy.tems Science & Complexity 2024年第2期37卷 692-728页

作者： MENG Jing feng Long ZOU Changliang WANG Zhaojun School of Statistics and Data Science KLMDASRLEBPSand LPMCNankai UniversityTianjin 300071China

In matrix completion,additional covariates often provide valuable information for completing the unobserved entries of a high-dimensional low-rank matrix *** this paper,the authors consider the matrix recovery.problem when there are multiple structural breaks in the coefficient matrix β under the column-space-decomposition model A=Xβ+B.A cumulative sum(CUSUM)statistic is constructed based on the penalized estimation of β.Then the CUSUM is incorporated into the Wild Binary.Segmentation(WBS)algorithm to consistently.estimate the location of ***,a nearly.optimal recovery.of A is *** findings are further corroborated via numerical experiments and a real-data application.

关键词： Additional covariates matrix completion multiple structural breaks wild Binary.Segmentation