The paper deals with generalized Rastall theory of gravity and its cosmological consequences in the background homogeneous isotropic flat FLRW model perfect fluid as matter context. shows a non singular era (emergent scenario) at early phase expansion for particular choice parameter. Also finds to be equivalent particle creation mechanism Einstein framework non-equilibrium thermodynamics. Universal thermodynamics is briefly presented it found that entropy function usual Bekenstein there no...

Abstract The present work deals with Noether symmetry approach in a modified teleparallel gravity for classical quantum cosmological description. In the background of homogeneous and isotropic flat Friedmann–Lema $$\hat{\text{ i }}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mover> <mml:mrow> <mml:mspace/> <mml:mtext>i</mml:mtext> </mml:mrow> <mml:mo>^</mml:mo> </mml:mover> </mml:math> tre–Robertson–Walker (FLRW) model, vector associated conserved charge identifies...

In this paper, we have tried to implement a relatively new exact series method of solution, known as the differential transform method, for solving one widely studied and challenging equations in nonlinear dynamics, Duffing–van der Pol oscillator equation. Chandrasekar et al (2004 J. Phys. A 37 4527) showed that force-free is completely integrable specific parametric choice, they derived general solution choice. The results paper are sufficient agreement with those al.

The paper deals with phantom scalar field cosmology in Einstein gravity. At first using Lie symmetry, the coupling function to kinetic term and potential of equation state parameter matter are determined a simple solution is obtained. Subsequently, Noether symmetry imposed on Lagrangian system. vector obtained takes very general form from which Symmetry can be as particular case. Then we choose point transformation $(a,\phi)\rightarrow(u,v)$ such that one transformed variables (say u) cyclic...

The structure of electrodes in the electrochemical formation cell porous silicon greatly influences planar uniformity layer. In this paper a systematic study large area layer formed by different electrode is reported based on photoluminescence and reflectance scanning surface. A new design developed for achieving satisfactory

Abstract The paper deals with a cosmological model containing two scalar fields which can be considered as an extension of the Brans–Dicke field model. Due to highly coupled non linear equations, Noether symmetry analysis has been imposed and result Lagrangian well equations become much simple in form have classical solutions. relevant parameters are analyzed graphically. Finally, quantum cosmology studied by constructing Wheeler–DeWitt equation solution this second order partial...

This work deals with [Formula: see text] gravity in the background of homogeneous and isotropic flat Friedmann–Lemaître–Robertson–Walker (FLRW) space-time model. The main aim this is to examine whether model supports observational data or not. By using Noether symmetry analysis, not only vector obtained, but also coupling function Lagrangian has been determined. Also, analysis identifies a transformation from such way that one new variables become cyclic along direction as result field...

This work deals with Einstein–æther scalar–tensor gravity in the background of homogeneous and isotropic flat FLRW space–time model. The Noether symmetry vector identifies a transformation augmented space so that field equations become solvable. cosmological solutions are analyzed from observational point view. Finally, for quantum cosmology, Wheeler–DeWitt (WD) equation has been formulated have determined by identifying periodic nature wave function using conserved (Noether) charge.

The present work deals with a quintom model of dark energy in the framework spatially flat isotropic and homogeneous Friedmann–Lemaitre–Robertson–Walker (FLRW) universe. At first, Lie point symmetry is imposed to system unknown coupled potential determined. Then Noether symmetry, which also like Lagrangian, on physical takes general form. It shown that algebra sub-algebra corresponding symmetry. Finally, transformation three-dimensional augmented space performed suitably so one variables...

This work deals with chameleon field cosmology (a scalar nonminimally coupled to cold dark matter) in the background of flat Friedmann-Lemaitre-Robertson-Walker (FLRW) space-time. Both classical and quantum have been investigated using Noether symmetry analysis underlying physical system. The Wheeler-DeWitt (WD) equation has constructed on minisuperspace solutions obtained conserved charge.

Conductivity of Porous Silicon (PS) can be modulated significantly by controlling its formation parameters like anodization current density and HF concentration in the electro-chemical cell doping silicon wafer. It is established that not only porosity but also uniformity PS layer determines conductivity layer. A quantitative relationship between effective presented verified experimentally.

The present work deals with evolution of the fractal model universe in background homogeneous and isotropic FLRW space-time geometry. cosmic substrum is taken as perfect fluid barotropic equation state. A general prescription for deceleration parameter determined it examined whether may have more than one transition during monomial form function a scale factor. Finally, has been by making comparison observed data.

The present work is an attempt for emergent universe scenario with modified Chaplygin gas. chosen as spatially flat FRW space-time gas the only cosmic substratum. It found that possible some specific (unrealistic) choice of parameters in equation state

Non-minimally coupled scalar field cosmology has been studied in this work within the framework of Einstein gravity. In background homogeneous and isotropic Friedmann–Lemaitre–Robertson–Walker (FLRW) spacetime non-minimally having self-interacting potential is taken as source matter content. The constraint imposing Noether symmetry on Lagrangian system not only determines infinitesimal generator (the vector) but also coupling function for field. By choosing appropriately a point...

Sarm1 is an evolutionary conserved innate immune adaptor protein that has emerged as a primary regulator of programmed axonal degeneration over the past decade. In vitro structural insights have revealed although induces energy depletion by breaking down nicotinamide adenine dinucleotide+ (NAD+ ), it also allosterically inhibited NAD+ . However, how levels modulate activation intracellular not been elucidated so far. This study focuses on understanding events leading to in both neuronal and...

The present work deals with a multi-field cosmological model in spatially flat FLRW space-time geometry. usual Brans-Dicke(BD) field and another scalar are minimally coupled to gravity while they interact each other through the Kinetic terms. {The main aim of is examine whether compatible cosmic observations. So solutions obtained using symmetry analysis only.} By imposing Noether Symmetry Lagrangian system potential as well coupling function has been determined. classical determined after...

Objectives: In this work, the photo components were investigated utilising GC-MS analysis and in vitro antioxidant activity, anthelmintic potential of methanolic extract aerial parts Lagenaria siceraria (MEALS).By using soxhlation method.Materials Methods: MEALS made from components, phytochemical was carried out for a qualitative evaluation.The activity measured ABTS technique, current utilised to analyse phytocomponents by study on Pheretima posthuma.The included 59 according study's...

In the background of homogeneous and isotropic flat FLRW spacetime, both classical quantum cosmologies have been studied for teleparallel dark energy (DE) model. Using Noether symmetry analysis, not only vector but also coupling function in Lagrangian potential scalar field determined. Also analysis identifies a cyclic variable along as result simplifies to great extent so that solution is obtained. Subsequently, cosmology Wheeler–DeWitt (WD) equation has constructed version conserved...

The paper deals with static traversable wormhole having shape function a polynomial of the radial coordinate degree 2. Embedding wormholes in space–time is examined both analytically and graphically. Also timelike null geodesics are studied this geometry.