In this work, we discuss the existence of weak solutions for the following class of nonlinear elliptic problem −∆w−λg(y)w + h(w) = f(y) in V \V0 w =0 onV0, (1) where V is the Sierpi´nski gasket in RN−1(N ≥ 2), V0 denotes its boundary (consisting of its N corners), ∆ is the Laplacian operator on V , λ ∈ R and f, g : V →R, h: R → R are the functions satisfying the following assumptions: (H1) f ∈ L2(Ω),g ∈ L∞(Ω), (H2) h : R → R be a Lipschitz continuous function with Lipschitz constant D and h(0...

In this work, a rectangular microstrip antenna is investigated on a conical surface for ISM band applications. 3D EM simulator HFSS is used to optimize the antenna. The fundamental TM_01 mode of the conical rectangular microstrip antenna is excited using a coaxial probe feeding mechanism. It is found that the antenna shows broadside radiation with a high isolation between co- and crosspolarization. The antenna shows a 5.4dB gain in the broadside direction.

This study evaluates the environmental sustainability of bioplastics using a cradle to grave Life Cycle Assessment (LCA). Environmental impacts related to greenhouse gas emissions, energy and water use, land use, and end of life management were analyzed. Results show that bioplastic sustainability strongly depends on feedstock selection, production processes, and waste treatment pathways, emphasizing the need for integrated supply chain and end of life strategies within a circular economy.

Luminous blue variables (LBVs) also known as S Doradus variables are evolved massive stars close to the Eddington limit, with a distinct spectroscopic and photometric variability having unsteady mass-loss rates. These stars show a considerable change in their surface temperature from quiescent to outbursts phase. The cause of irregular variability and unsteady mass-loss rate is not properly understood. Here we present the preliminary results of linear stability analysis in six LBVs (GR 290, H...

Massive stars play a crucial role in the chemical enrichment of galaxies. These stars exhibit several phenomena including variability of different time scales and extreme mass-loss. Variability of evolved massive stars such as Wolf-Rayet have posed several challenges in our understanding on the origin of variability. Here we present the outcomes of the linear stability analysis in three Wolf-Rayet stars. Linear stability analyses show that the models of these stars have radial modes of the or...

Introduction: Paper microfluidic devices despite proven to be effective, encounter challenges when complex biofluids such as blood, mucus or cerebrospinal fluid are used as samples1. These fluids exhibit high flow resistance due to their non-Newtonian nature, arising from cellular & biomolecular components. As a result, complex fluids show slow wetting uneven spreading and unintended separation effects2. This study examines different design parameters to manipulate fluid flow more effectively...

Objective: Develop a drying based application platform to predict the initial characteristics of Coccinia grandis, which vary with geographic location, climate, harvesting method, harvesting time, and biological variability. Methodology: A computational fluid dynamic (CFD) model was developed based on different partial differential equations that consider heat, mass, and momentum transfer and validated against an experimental drying process (hot air oven at 60°C and an air velocity of 1 m/s)....

Objectives: This study developed a chitosan-based antifungal coating enriched with ursolic acid (UA) extracted from basil and rosemary to extend papaya shelf life. It focused on UA extraction, purification, antifungal evaluation, and effectiveness in preserving papaya quality during storage. Methodology: UA was purified using column chromatography, confirmed through TLC and FTIR, and quantified by the vanillin-sulfuric acid colorimetric method. Its antifungal activity was tested against Candi...

In the study of supersymmetry, we encounter the systems whose dynamics are represented using both commuting and anticommuting variables. Thus, the state-space of those dynamical systems becomes a supermanifold. Though the dynamical systems emerging from natural phenomena are nonlinear in nature, linear control systems play a vital role in studying the systems locally. Therefore, we study the linear control system on Lie supergroups along with its controllability criterion. Moreover, we prove ...

Lead-free ferroelectric ceramic oxides; KxNa1-xNbO3 (x = 0.45, 0.50 and 0.55) have been prepared using solid-state reaction technique by varying K/Na ratio. Their crystal structures have been investigated using XRD and Raman spectroscopic techniques at room temperature (RT). Rietveld refinement analysis on XRD data suggest the monoclinic crystal structure having Pm space group for K0.45Na0.55NbO3 and orthorhombic crystal structure with Amm2 space group for both K0.5Na0.5NbO3 and K0.55Na0.45Nb...

Objective: This study aims to evaluate the synergistic effects of three prominent non-thermal techniques; Ultrasound (US), Ultraviolet (UV) and Ozone (O3) on milk quality. The objective is to determine whether this hurdle-based approach can enhance the functional, structural, and nutritional properties of milk, without compromising the nutritional integrity, thereby offering a clean-label alternative to the conventional thermal techniques. Methodology: Raw milk was subjected to combined US-UV...

Lead-free Ba₁₋ₓSrₓTiO₃ (BST) ceramics with x = 0.25, 0.30, and 0.35 were synthesized via solid-state reaction for energy storage applications. X-ray diffraction confirmed the formation of a tetragonal phase. Among the compositions, 35BST exhibited superior dielectric and energy storage performance near room temperature, delivering a recoverable energy density of 0.75 J/cm³ and efficiency of ~ 72.2 % at 115 kV/cm. Enhanced Sr content was found to improve breakdown strength and polarization, ma...

The synthesis, structural characteristics, and functional properties of calcium-modified barium titanate (Ba1-xCaxTiO3) ceramics of composition x = 0.10 and 0.20 are studied. Two synthesis methods, high-energy ball milling (HEBM) and hand grinding (HG), are adopted to compare their impact on the material's ferroelectric, dielectric, and structural properties. XRD analysis confirmed the tetragonal perovskite structure for both ceramics. Density measurements revealed that HEBM samples have high...

The composite 0.9Bi2Fe4O9/0.1Ni2Fe4O9 was synthesized via the sol–gel auto-combustion method, and its structural, magnetic, and dielectric properties were systematically investigated in the present work. Rietveld refinement of room-temperature (RT) X-ray diffraction (XRD) patterns confirmed the coexistence of dual-phase formation. The microstructural analysis indicated non-uniform grain dispersion, with the average grain size estimated to be around ~ 0.5μm. The RT M–H curve of the composite e...

This study investigated the magnetic, dielectric and magnetodielectric (MD) properties of a 0.9KBFO-0.1NFO composite synthesized using the sol-gel method. The dielectric constant and storage properties were characterized across a broad temperature range of 30 to 580 °C, revealing a maximum dielectric constant of 15.13×103. Temperature- and field-dependent magnetic measurements were conducted to ascertain the magnetic properties, confirming the presence of finite magnetic parameters. The magne...

In coastal regions, due to the over-extraction of groundwater, the regions are facing the issue of seawater intrusion, which causes depletion of fresh water and degradation of groundwater quality. Therefore, the availability of water for drinking and irrigation is reduced. In the present study, the Analytical Hierarchical Process (AHP) and Machine Learning technique are used to identify the potential zones for groundwater which will be useful for the development of effective strategies for ef...

Protein-protein association is affected by non-specific interactions with heterogeneous cellular environment. Quantifying the effect of such environment is still a formidable task. Experimental and simulation studies usually probe the effect of homogeneous crowder environment on protein-protein association which provide inadequate insight into the actual effect in vivo. In this study, we employ a coarse-grained approach1 to model the GB1 (side-by-side) dimerization in attractive lysozyme crow...

Protein-protein association, like dimerization, is essential for various biological functions. Here we explore dimerization of the GB1 protein, a well-known model system, through multiple short simulations and Markov State Model (MSM). To this end, Parallel Tempering Metadynamics (PTMetaD-WTE1) simulations were performed along two collective variables, the center of geometry distance (dcog) and inter-chain co-ordination number (ninter) to quickly explore the free energy landscape (FES). Next,...

Objective: Whey protein and maltodextrin conjugated foam-mat dried honey powder: Functional, physicochemical, structural, rheological, and thermal characterization. Methodology: Foam mat dried honey powder was obtained by the foam mat drying technique in which whey protein isolate and maltodextrin were used as foaming agent and foam stabilizer, respectively. The obtained honey powder was characterized in terms of physical, chemical, functional, phytochemical, rheological and structural proper...