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Applied mathematics and mechanics(English Edition) 2008年第10期29卷 1263-1278页

作者： m.K.Ghosh m.kanoria Department of mathematics Serampore CollegeSeramporeHooghly-712201India Department of Applied mathematics University of Calcutta 92 A.P.C.RoadKolkata-700009India

This paper is concerned with the determination of thermoelastic displacement, stress and temperature in a functionally graded spherically isotropic infinite elastic medium having a spherical cavity, in the context of the linear theory of generalized thermoelasticity with two relaxation time parameters （Green and Lindsay theory）. The surface of cavity is stress-free and is subjected to a time-dependent thermal shock. The basic equations have been written in the form of a vector-matrix differential equation in the Laplace transform domain, which is then solved by an eigenvalue approach. Numerical inversion of the transforms is carried out using the Bellman method. Displacement, stress and temperature are computed and presented graphically. It is found that variation in the thermo-physical properties of a material strongly influences the response to loading. A comparative study with a corresponding homogeneous material is also made.

关键词： generalized thermoelasticity functionally graded material (FGm) Green-Lindsay theory vector-matrix differential equation Bellman method

Dynamic response in two-dimensional transversely isotropic thick plate with spatially varying heat sources and body forces

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Applied mathematics and mechanics(English Edition) 2011年第10期32卷 1315-1332页

作者： m.ISLAm S.H.mALLIK m.kanoria Department of mathematics St. Xavier's College (Evening) Kolkata 700016 India Department of mathematics Aliah University Kolkata 700091 India Department of Applied mathematics University of Calcutta Kolkata 700009 India

This paper deals with a two-dimensional （2D） problem for a transverselyisotropic thick plate having heat sources and body forces. The upper surface of the plate is stress free with the prescribed surface temperature, while the lower surface of the plate rests on a rigid foundation and is thermally insulated. The study is carried out in the context of the generalized thermoelasticity proposed by Green and Naghdi. The governing equations for displacement and temperature fields are obtained in the Laplace-Fourier transform domain by applying the Laplace and Fourier transforms. The inversion of the double transform is done numerically. Numerical inversion of the Laplace transform is done based on the Fourier series expansion. Numerical computations are carried out for magnesium （mg）, and the results are presented graphically. The results for an isotropic material （Cu） are obtained numerically and presented graphically to be compared with those of a transversely isotropic material （mg）. The effect of the body forces is also studied.

关键词： generalized thermoelasticity Green-Naghdi model transversely isotropic material spatially varying heat source body force

Effect of anisotropy on thermoelastic contact problem

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Applied mathematics and mechanics(English Edition) 2008年第4期29卷 501-510页

作者： Sakti Pada Barik m.kanoria P.K.Chaudhuri Departmemt of mathematics Gobardanga Hindu CollegeKhantura24-Parganas(N)West BengalIndia Department of Applied mathematics University of Calcutta92A.P.C.RoadKolkata-700009India

This paper is concerned with the stationary plane contact of an insulated rigid punch and a half-space which is elastically anisotropic but thermally conducting. The frictional heat generation inside the contact region due to the sliding of the punch over the half-space surface and the heat radiation outside the contact region are taken into account. With the help of Fourier integral transform, the problem is reduced to a system of two singular integral equations. The equations are solved numerically by using Gauss-Jacobi and trapezoidal-rule quadratures. The effects of anisotropy and thermal effects are shown graphically.

关键词： transversely isotropic medium Fourier transform frictional heating punch heat radiation singular integral equation Fredholm integral equation

三相滞后对有球形空腔无限介质双温广义热弹性的影响

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应用数学和力学 2012年第4期33卷 460-474页

作者： S·班尼克 m·卡诺尼亚海治张禄坤加尔各答大学应用数学系印度加尔各答700009 不详

就各向同性的无限弹性体,具有一个球形空腔时,从双温广义热弹性理论(2TT)角度,研究三相滞后热方程的热弹性相互作用问题.在三相滞后理论中,热传导方程是一个含时间四阶导数的、双曲型的偏微分方程.假设无限介质初始时静止,通过Laplace变... 详细信息

就各向同性的无限弹性体,具有一个球形空腔时,从双温广义热弹性理论(2TT)角度,研究三相滞后热方程的热弹性相互作用问题.在三相滞后理论中,热传导方程是一个含时间四阶导数的、双曲型的偏微分方程.假设无限介质初始时静止,通过Laplace变换,将基本方程用向量矩阵微分方程的形式表示,然后通过状态空间法求解.将得到的通解应用于特殊问题:空腔边界上承受着热荷载(热冲击和坡型加热)和力学荷载.使用Fourier级数展开技术,实现Laplace变换的求逆.计算了铜类材料物理量的数值解.图形显示,两种模型:带能量耗散的双温Green-Naghdi理论(2TGNⅢ)和双温三相滞后模型(2T三相)明显不同.还对双温和坡型参数的影响进行了研究.

关键词：双温广义热弹性 Green-Naghdi模型三相滞后模型球形空腔状态空间法

Effects of three-phase-lag on two-temperature generalized thermoelasticity for infinite medium with spherical cavity

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Applied mathematics and mechanics(English Edition) 2012年第4期33卷 483-498页

作者： S. BANIK m. kanoria Department of Applied mathematics University of Calcutta

The thermoelastic interaction for the three-phase-lag （TPL） heat equation in an isotropic infinite elastic body with a spherical cavity is studied by two-temperature generalized thermoelasticity theory （2TT）. The heat conduction equation in the theory of TPL is a hyperbolic partial differential equation with a fourth-order derivative with respect to time. The medium is assumed to be initially quiescent. By the Laplace trans- formation, the fundamental equations are expressed in the form of a vector-matrix differ- ential equation, which is solved by a state-space approach. The general solution obtained is applied to a specific problem, when the boundary of the cavity is subjected to the ther- mal loading （the thermal shock and the ramp-type heating） and the mechanical loading. The inversion of the Laplace transform is carried out by the Fourier series expansion tech- niques. The numerical values of the physical quantity are computed for the copper like ma- terial. Significant dissimilarities between two models （the two-temperature Green-Naghdi theory with energy dissipation （2TGN-III） and two-temperature TPL model （2T3phase）） are shown graphically. The effects of two-temperature and ramping parameters are also studied.

关键词： two-temperature generalized thermoelasticity Green-Naghdi model three-phase-lag model spherical cavity state-space approach

Displacements and stresses in composite multi-layered media due to varying temperature and concentrated load

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Applied mathematics and mechanics(English Edition) 2007年第6期28卷 811-822页

作者： m.K.Ghosh m. kanoria Department of mathematics Serampore CollegeSeramporeHooghly-712 201India Department of Applied mathematics University of Calcutta92 A. P. C. RoadKolkata-700 009India

This paper deals with the determination of the thermo-elastic displacements and stresses in a multi-layered body set up in different layers of different thickness having different elastic properties due to the application of heat and a concentrated load in the uppermost surface of the medium. Each layer is assumed to be made of homogeneous and isotropic elastic material. The relevant displacement components for each layer are taken to be axisymmetric about a line, which is perpendicular to the plane surfaces of all layers. The stress function for each layer, therefore, satisfies a single equation in absence of any body forces. The equation is then solved by integral transform technique. Analytical expressions for thermo-elastic displacements and stresses in the underlying mass and the corresponding numerical codes are constructed for any number of layers. However, the numerical comparison is made for three and four layers.

关键词： thermal stress layered body concentrated load Bessel function integral transform

Neurogenesis dynamics in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： moawiah m.Naffaa Department of Psychology and Neuroscience Duke UniversityDurhamNCUSA Department of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons migrating to the granule cell layer and glomerular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit remodeling triggered by memory and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. moreover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory information processing. This adaptive process responds to changes in epithelial composition and contributes to the formation of olfactory memories by modulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions remains a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around mitral and tufted cells. This organizational pattern significantly impacts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and memory. Additionally, this organization is further shaped by axon terminals originating from cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these complex and highly interconnected processes have not been comprehensively studied as a whole. Therefore, this manuscript aims to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These mechanisms are thought to support olfactory learning and memory, potentially through increased

关键词： network adaptability neurogenesis neuronal communication olfactory bulb olfactory learning olfactory memory synaptic plasticity

mitochondria–cGAS–STING axis is a potential therapeutic target for senescence-dependent inflammaging-associated neurodegeneration

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Neural Regeneration Research 2025年第3期20卷 805-807页

作者： Josém.Izquierdo Centro de Biología molecular Severo Ochoa(CBm) Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

The word “senescence” comes from the Latin senescens, meaning “to begin to age”, and is characterized by a long-lasting but reversible block in proliferation, resulting from stress-induced cell cycle arrest of pre... 详细信息

关键词： Latin potential lasting

Brain-penetrating neurotrophic factor mimetics: HER-096 as a disease-modifying therapy for Parkinson’s disease

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Neural Regeneration Research 2025年第4期20卷 1094-1095页

作者： Natalia Kulesskaya Kira m.Holmström Henri J.Huttunen Herantis Pharma Plc EspooFinland

Neurotrophic factors as a therapeutic approach in neurodegenerative diseases:A major unmet need in the field of central nervous system diseases is disease-modifying *** for decades there have been various symptomatic treatments available to alleviate the symptoms of the disease,disease-modification,*** that stop,significantly delay,or reverse the progression of the disease,has been turned out to a difficult goal to achieve.

关键词： diseases treatment therapeutic

Search for microglia-specific peptides:advances in the discovery toolbox

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Neural Regeneration Research 2025年第2期20卷 471-472页

作者： Ivan Sarabia Kyle m.Koss Department of Surgery University of ArizonaTucsonAZUSA

Uncontrolled and chronic inflammatory states in the central nervous system(CNS)are the hallmark of neurodegenerative pathology and every injury or stroke-related *** key mediators of these neuroinflammatory states are glial cells known as microglia,the resident immune cell at the core of the inflammatory event,and astroglia,which encapsulate inflammatory insults in proteoglycan-rich scar *** gliotic scar blocks significant portions of healthy axonal networking,preventing *** most neuroinflammation is exclusively based on the responses of said microglia,their phenotypes are suggested to follow those of macrophages;m1 and m2 are opposites of pro-and ***,microglial phenotypes have been identified to be on an inflammatory spectrum encompassing developmental,homeostatic,and reparative behaviors as opposed to their ability to affect devastating cell death cascades and scar tissue formation.

关键词： inflammation pathology death