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Chinese Physics B 2015年第4期24卷 467-474页

作者： A.E.Ershov A.P.Gavrilyuk s.v.karpov P.N.semina L.v.Kirensky Institute of Physics Russian Academy of Sciences Institute of Computational Modeling Russian Academy of Sciences siberian state Aerospace University siberian Federal University

Interactions of pulsed laser radiation with resonance domains of multiparticle colloidal aggregates having an increasingly complex local environment are studied via an optodynamic model. The model is applied to the simplest configurations, such as single particles, dimers, and trimers consisting of mono- and polydisperse Ag nanoparticles. We analyze how the local environment and the associated local feld enhancement by surrounding particles affect the optodynamic processes in domains, including their photomodification and optical properties.

关键词： nanoparticle surface plasmon colloid aggregate optodynarnics

Measurement of J/ψ→η_cγ at KEDR

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Chinese Physics C 2010年第6期34卷 831-835页

作者： v.v.Anashin v.M.Aulchenko E.M.Baldin A.K.Barladyan A.Yu.Barnyakov M.Yu.Barnyakov s.E.Baru I.v.Bedny O.L.Beloborodova A.E.Blinov v.E.Blinov A.v.Bobrov v.s.Bobrovnikov A.v.Bogomyagkov A.E.Bondar A.R.Buzykaev s.I.Eidelman Yu.M.Glukhovchenko v.v.Gulevich D.v.Gusev s.E.Karnaev G.v.karpov s.v.karpov T.A.Kharlamova v.A.Kiselev s.A.Kononov K.Yu.Kotov E.A.Kravchenko v.F.Kulikov G.Ya.Kurkin E.A.Kuper E.B.Levichev D.A.Maksimov v.M.Malyshev A.L.Maslennikov A.s.Medvedko O.I.Meshkov A.I.Milstein s.I.Mishnev I.I.Morozov N.Yu.Muchnoi v.v.Neufeld s.A.Nikitin I.B.Nikolaev I.N.Okunev A.P.Onuchin s.B.Oreshkin I.O.Orlov A.A.Osipov s.v.Peleganchuk s.G.Pivovarov P.A.Piminov v.v.Petrov A.O.Poluektov I.N.Popkov G.E.Pospelov v.G.Prisekin A.A.Ruban v.K.sandyrev G.A.savinov A.G.shamov D.N.shatilov B.A.shwartz E.A.simonov s.v.sinyatkin Yu.I.skovpen A.N.skrinsky v.v.smaluk A.v.sokolov A.M.sukharev E.v.starostina A.A.Talyshev v.A.Tayursky v.I.Telnov Yu.A.Tikhonov K.Yu.Todyshev G.M.Tumaikin Yu.v.Usov A.I.vorobiov A.N.Yushkov v.N.Zhilich v.v.Zhulanov A.N.Zhuravlev Budker Institute of Nuclear Physics Novosibirsk state University Novosibirsk state Technical University

We present a study of the inclusive photon spectra from 5.9 million J/ψ decays collected with the KEDR detector at the vEPP-4M e＋e collider. We measure the branching fraction of radiative decay J/ψ→ηcγ, ηc width and mass. Our preliminary results are： M（ηc） = 2979.4± 1.5 ± 1.9 Mev/c^2, Г（ηc） = 27.8±5.1 ±3.3 Mev, B（Jψ→ηcγ） = （2.34±0.15±0.40）%.

关键词： ηc meson full width mass radiative decay

Recent results from the KEDR detector

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Chinese Physics C 2010年第6期34卷 650-655页

作者： v.v.Anashin v.M.Aulchenko E.M.Baldin A.K.Barladyan A.Yu.Barnyakov M.Yu.Barnyakov s.E.Baru I.v.Bedny O.L.Beloborodova A.E.Blinov v.E.Blinov A.v.Bobrov v.s.Bobrovnikov A.v.Bogomyagkov A.E.Bondar A.R.Buzykaev s.I.Eidelman Yu.M.Glukhovchenko v.v.Gulevich D.v.Gusev s.E.Karnaev s.v.karpov T.A.Kharlamova v.A.Kiselev s.A.Kononov K.Yu.Kotov E.A.Kravchenko v.F.Kulikov G.Ya.Kurkin E.A.Kuper E.B.Levichev D.A.Maksimov v.M.Malyshev A.L.Maslennikov A.s.Medvedko O.I.Meshkov s.I.Mishnev I.I.Morozov N.Yu.Muchnoi v.v.Neufeld s.A.Nikitin I.B.Nikolaev I.N.Okunev A.P.Onuchin s.B.Oreshkin I.O.Orlov A.A.Osipov s.v.Peleganchuk s.G.Pivovarov P.A.Piminov v.v.Petrov A.O.Poluektov I.N.Popkov v.G.Prisekin A.A.Ruban v.K.sandyrev G.A.savinov A.G.shamov D.N.shatilov B.A.shwartz E.A.simonov s.v.sinyatkin Yu.I.skovpen A.N.skrinsky v.v.smaluk A.v.sokolov A.M.sukharev E.v.starostina A.A.Talyshev v.A.Tayursky v.I.Telnov Yu.A.Tikhonov K.Yu.Todyshev G.M.Tumaikin Yu.v.Usov A.I.vorobiov A.N.Yushkov v.N.Zhilich v.v.Zhulanov A.N.Zhuravlev Budker Institute of Nuclear Physics Novosibirsk state University Novosibirsk state Technical University 20Karl Marx prospectNovosibirsk630092Russia

We report results of experiments performed with the KEDR detector at the vEPP-4M e^＋e^- collider. They include precise measurement of the D^0 and D^± meson masses, determination of the ψ（3770） resonance parameter... 详细信息

关键词： D meson ψ(3770) mass narrow resonances

semantic segmentation of Lumbar vertebrae Using Meijering U-Net(MU-Net)on spine Magnetic Resonance Images

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Computer Modeling in Engineering & sciences 2025年第1期142卷 733-757页

作者： Lakshmi s v v shiloah Elizabeth Darmanayagam sunil Retmin Raj Cyril Department of Computer science and Engineering College of Engineering GuindyAnna UniversityChennai600025India Department of Information Technology Madras Institute of TechnologyAnna UniversityChrompetChennai600044India

Lower back pain is one of the most common medical problems in the world and it is experienced by a huge percentage of people *** to its ability to produce a detailed view of the soft tissues,including the spinal cord,nerves,intervertebral discs,and vertebrae,Magnetic Resonance Imaging is thought to be the most effective method for imaging the *** semantic segmentation of vertebrae plays a major role in the diagnostic process of lumbar *** is difficult to semantically partition the vertebrae in Magnetic Resonance Images from the surrounding variety of tissues,including muscles,ligaments,and intervertebral discs.U-Net is a powerful deep-learning architecture to handle the challenges of medical image analysis tasks and achieves high segmentation *** work proposes a modified U-Net architecture namely MU-Net,consisting of the Meijering convolutional layer that incorporates the Meijering filter to perform the semantic segmentation of lumbar vertebrae L1 to L5 and sacral vertebra ***-colour mask images were generated and used as ground truth for training the *** work has been carried out on 1312 images expanded from T1-weighted mid-sagittal MRI images of 515 patients in the Lumbar spine MRI Dataset publicly available from Mendeley *** proposed MU-Net model for the semantic segmentation of the lumbar vertebrae gives better performance with 98.79%of pixel accuracy(PA),98.66%of dice similarity coefficient(DsC),97.36%of Jaccard coefficient,and 92.55%mean Intersection over Union(mean IoU)metrics using the mentioned dataset.

关键词： Computer aided diagnosis(CAD) magnetic resonance imaging(MRI) semantic segmentation lumbar vertebrae deep learning U-Net model

Unlocking hypoglycemia–associated brain microvascular dysfunction:critical insights from proteomic analysis

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Neural Regeneration Research 2025年第6期20卷 1707-1708页

作者： siva s.v.P.sakamuri Anil sakamuri Department of Chemistry Auburn University at MontgomeryMontgomeryALUSA vascular Biology Center and Department of Medicine Medical College of Georgia at Augusta UniversityAugustaGAUSA

Hypoglycemia-a critical complication linked to worsened brain function in diabetic subjects:Hypoglycemia is characterized by a decline in circulatory glucose levels below sta nda rd physiological *** hypoglycemia,classified as level 1 hypoglycemia,is defined by blood glucose levels below 70 mg/dL and can be effectively addressed through carbohydrate *** hypoglycemia,denoted by blood glucose levels less than 54 mg/dL,poses a life-threatening risk if left *** with type 1 and type 2 diabetes undergoing insulin treatment are particularly susceptible to hypoglycemia due to impaired counterregulatory mechanisms.

关键词： impaired intake critical

A comprehensive investigation on nonlinear vibration and bending characteristics of bio-inspired helicoidal laminated composite structures

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 81-100页

作者： s.sAURABH R.KIRAN D.sINGH R.vAIsH v.s.CHAUHAN school of Mechanical and Materials Engineering Indian Institute of Technology Mandi

Bio-inspired helicoidal composite laminates, inspired by the intricate helical structures found in nature, present a promising frontier for enhancing the mechanical properties of structural designs. Hence, this study provides a comprehensive investigation into the nonlinear free vibration and nonlinear bending behavior of bio-inspired composite plates. The inverse hyperbolic shear deformation theory(IHsDT) of plates is employed to characterize the displacement field, with the incorporation of Green-Lagrange nonlinearity. The problem is modeled using the C0finite element method(FEM), and an in-house code is developed in the MATLAB environment to solve it numerically. various helicoidal layup configurations including helicoidal recursive(HR), helicoidal exponential(HE), helicoidal semi-circular(Hs), linear helicoidal(LH), and Fibonacci helicoidal(FH)with different layup sequences and quasi-isotropic configurations are studied. The model is validated, and parametric studies are conducted. These studies investigate the effects of layup configurations, side-to-thickness ratio, modulus ratios, boundary conditions, and loading conditions at different load amplitudes on the nonlinear vibration and nonlinear bending behaviors of bio-inspired composite plates. The results show that the laminate sequence exerts a substantial impact on both nonlinear natural frequencies and nonlinear bending behaviors. Moreover, this influence varies across different side-to-thickness ratios and boundary conditions of the bio-inspired composite plate.

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Processes underlying the laser photochromic effect in colloidal plasmonic nanoparticle aggregates

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Chinese Physics B 2020年第3期29卷 412-419页

作者： A E Ershov v s Gerasimov I L Isaev A P Gavrilyuk s.v.karpov Institute of Computational Modeling sB RAs 660036KrasnoyarskRussia siberian Federal University Krasnoyarsk660041Russia Kirensky Institute of Physics Federal Research Center KSC SB RAS660036KrasnoyarskRussia siberian state University of science and Technology Krasnoyarsk 660014Russia

We have studied the dynamic and static processes occurring in disordered multiparticle colloidal Ag aggregates with natural structure and affecting their plasmonic absorption spectra under pico-and nanosecond pulsed laser radiations, as well as the physical origin responsible for these processes. We have shown that depending on the duration of the laser pulse,the mechanisms of laser modification of such aggregates can be associated both with changes in the resonant properties of the particles due to their heating and melting(picosecond irradiation mode) and with the particle shifts in the resonant domains of the aggregates(nanosecond pulses) which depend on the wavelength, intensity, and polarization of the *** mechanisms result in formation of a narrow dip in the plasmonic absorption spectrum of the aggregates near the laser radiation wavelength and affect the shape and position of the dip. The effect of polydispersity of nanoparticle aggregates on laser photochromic reaction has been studied.

关键词： nanoparticle surface plasmon resonance photochromic process pulsed laser radiation

Restructuring of plasmonic nanoparticle aggregates with arbitrary particle size distribution in pulsed laser fields

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Chinese Physics B 2016年第11期25卷 563-570页

作者： A E Ershov A P Gavrilyuk s.v.karpov s P Polyutov Institute of Computational Modeling Russian Academy of SciencesKrasnoyarsk 660036Russia L.v.Kirensky Institute of Physics of the Russian Academy of sciences Krasnoyarsk 660036Russia siberian Federal University Krasnoyarsk 660028Russia siberian state Aerospace University Krasnoyarsk 660037Russia

We have studied processes of interaction of pulsed laser radiation with resonant groups of plasmonic nanoparticles（resonant domains） in large colloidal nanoparticle aggregates having different interparticle gaps and particle size *** processes are responsible for the origin of nonlinear optical effects and photochromic reactions in multiparticle *** describe photo-induced transformations in resonant domains and alterations in their absorption spectra remaining after the pulse action,we introduce the factor of spectral *** on calculation of changes in thermodynamic,mechanical,and optical characteristics of the domains,the histograms of the spectrum photomodification factor have been obtained for various interparticle gaps,an average particle size,and the degree of *** in spectra have been analyzed depending on the intensity of laser radiation and various combinations of size characteristics of *** obtained results can be used to predict manifestation of photochromic effects in composite materials containing different plasmonic nanoparticle aggregates in pulsed laser fields.

关键词： resonant arbitrary pulsed dipole manifestation alterations extinction remaining aggregate colloidal

An sPH Framework for Earthquake-Induced Liquefaction Hazard Assessment of Geotechnical structures

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Computer Modeling in Engineering & sciences 2025年第1期142卷 251-277页

作者： sourabh Mhaski G.v.Ramana Department of Civil Engineering Indian Institute of Technology DelhiNew Delhi110016India

Earthquake-induced soil liquefaction poses significant risks to the stability of geotechnical structures *** understanding of the liquefaction triggering,and the post-failure large deformation behaviour is essential for designing resilient *** present study develops a smoothed Particle Hydrodynamics(sPH)framework for earthquake-induced liquefaction hazard assessment of geotechnical *** coupled flowdeformation behaviour of soils subjected to cyclic loading is described using the PM4sand model implemented in a three-phase,single-layer sPH framework.A staggered discretisation scheme based on the stress particle sPH approach is adopted to minimise numerical inaccuracies caused by zero-energy modes and tensile ***,non-reflecting boundary conditions for seismic analysis of semi-infinite soil domains using the sPH method are *** numerical framework is employed for the analysis of cyclic direct simple shear test,seismic analysis of a level ground site,and liquefaction-induced failure of the Lower san Fernando *** agreement for liquefaction triggering and post-failure behaviour demonstrates that the sPH framework can be utilised to assess the effect of seismic loading on field-scale geotechnical *** present study also serves as the basis for future advancements of the sPH method for applications related to earthquake geotechnical engineering.

关键词： Earthquake seismic liquefaction stress particle PM4sand smoothed particle hydrodynamics(sPH)

Convergence of COvID-19 and recurrent stroke:In-hospital mortality risks explored

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World Journal of virology 2025年第1期14卷 5-8页

作者： Basavraj s Nagoba shree v Dhotre Ajay M Gavkare sachin s Mumbre Pradnya s Dhotre Department of Microbiology Maharashtra Institute of Medical Sciences and Research(Medical College)Latur 413531India Department of Microbiology Ashwini Rural Medical CollegeSolapur 413001India Department of Community Medicine Ashwini Rural Medical CollegeSolapur 413001India Department of Biochemistry Ashwini Rural Medical CollegeSolapur 413001India

This editorial comments on the article by Desai et al,which investigates the impact of coronavirus disease 2019(COvID-19)on in-hospital mortality among patients with recurrent stroke using data from the 2020 National Inpatient *** findings reveal significantly higher mortality rates in COvID-19-positive patients compared to non-COvID-19 patients,particularly among middle-aged individuals,males,and ethnic *** editorial explores the underlying mechanisms contributing to these outcomes and discusses the clinical implications for targeted management strategies in high-risk *** results emphasize the need for comprehensive approaches to mitigate the heightened risks faced by recurrent stroke patients during the COvID-19 pandemic.

关键词： Recurrent stroke COvID-19 In-hospital mortality Nationwide analysis stroke admissions Infectious diseases Chronic health conditions Hypercoagulability