In this work, the electron paramagnetic resonance (EPR) parameters (g-factors and A-constants) of the tetragonal VO2+ centers in LiHSO4 single crystals are theoretically investigated by the high-order perturbation formulae for these parameters based on two-spin–orbit-parameter model. Since the spin–orbit coupling coefficient of the ligand O2− is close to that of the central ion V4+ for the present

Recently, Lodhi and Mishra (J Comput Appl Math 319:170–187, 2017) presented the standard B-spline method based on quintic B-spline basis functions to solve a type of singularly perturbed boundary value problems (SPBVP). We note that their method provides only fourth-order convergence approximation to the solution of such problem. In this paper, we present a novel optimal B-spline technique, based on

This paper explores several characteristics of the pseudo-gamma (PG) distribution proposed by Mohsin et al. (J Appl Stat Sci 18(2):239–250, 2010) and finds it such a pliable distribution which approaches a variety of well-known distributions. The PG distribution is capable of describing the high probability at tails. An account of reliability features such as survival function, hazard rate function

In this paper, a Liénard-type differential equation with piecewise constant argument of generalized type is proposed. Existence and uniqueness of the solutions are investigated. Uniform asymptotic stability of the trivial solution is examined by the Lyapunov–Krasovskii method. The obtained theoretic results are exemplified and supported by a simulation.

In spite of point load method has been frequently used for assessment of the decay state of stones under weathering agents, its method in estimation of long-term durability of natural rocks remains limited. This study aims to assess the point load method efficiency in evaluation of long-term durability of limestone types due to frost action. For this reason, the frost process up to 100 cycles was applied

This research propounds a fractional-order Legendre functions operational matrix of fractional integration in order to solve the fractional delay differential equations. The fractional derivative is regarded in the Caputo sense. The suggested method is implemented to reduce the problem to the solution of a system of algebraic equations. Using the presented method, some examples are solved and numerical

In this work, pure and Bi-doped (0.01, 0.02 and 0.03) M Cu2Se thin films were deposited on glass substrate by simple chemical bath deposition method. The effect of Bi doping on Cu2Se films was analysed using their structural, morphological, optical and electrical properties recorded by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), diffuse reflectance spectra (DRS) and

The chemical co-precipitation method was used to prepare Ba0.88Sr0.12SO4:Dy1.5mol%,Tb1mol% nanocrystalline powder. Ba0.88Sr0.12SO4:Dy1.5mol%,Tb1mol% pellets were fabricated in order to measure gamma ray irradiation. A main TL glow peak around 207 °C, a small peak at 157 °C and a good linear response for doses in the range of 0.01–5 kGy were observed. The TLE spectra of the pellets were recorded at

Abstract A simple procedure for the synthesis of functionalized magnetic iron oxide supported sulfonic acid (Fe3O4@SiO2–Pr–NH2–SO2CH3) is reported. The product was characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM)

Carbon nanotubes (CNTs) remain one of the most efficient reinforcing material for enhanced mechanical and electrical properties. In this study, the effects of multi-walled CNTs (MWCNTs) fillers on mechanical, structural, and electrical properties of polymethyl methacrylate (PMMA)/MWCNTs composites were studied. The PMMA/MWCNTs composites, containing varying MWCNTs concentration of 0.1, 0.3, and 0.5

In their remarkable paper, Fazli et al. (Int J Comput Math, 2019. https://doi.org/10.1080/00207160.2019.1658870) have recently established existence results for fractional Basset–Boussinesq–Oseen equation in an appropriate partially ordered Banach space. In this paper, we improve this study by proposing different approach that provides existence criterion for the addressed equation. The main assumptions

Let H be a compact subgroup of a locally compact group G. In this paper we define a convolution on M(G/H) , the space of all bounded complex Radon measures on the homogeneous space G/H. Then we prove that the measure space M(G/H) with the newly well-defined convolution is a non-unital Banach algebra that possesses an approximate identity. Finally, it is shown that this Banach algebra is not involutive

Hydrocarbons originated from automobile oils are significant polluting agents of the soil. Lipase-mediated catalytic degradation of hydrocarbons from this used automobile oil is attempted in the present approach. Lipase was produced from peanut oil industry waste biomass using thermophilic alkaline-tolerant Pseudomonas sp. S1 obtained from sediment of Taptapani hot spring, Odisha. The experiments were

The advancement in development of lead-free materials (ceramics, single crystal, thin film) acts as a forerunner to the stepwise progression in tailoring the performance of electronic devices. The perovskite-based lead-free ceramics are gaining lot of research interest due to their utilization in several electronic applications. The lead-free ceramics having chemical formula 0.65Bi(Fe0.98Ga0.02)O3–0

Carla (Momordica charantia L.) is a medicinal plant of the Cucurbitaceae family, which has antibacterial, anticancer, anti-tumor, hypoglycemic, hypertensive, and cholesterol properties. In this study, the effects of zinc oxide nanoparticles (ZnO-NPs) (20, 60, and 100 ppm), jasmonate (100, 250, and 500 μM), and chitosan (10, 50, and 100 μM) were measured on the growth and some physiological and biochemical

Five previously isolated bacterial strains were cultured on xylan agar medium (XAM) to screen their xylanase production potential. Two best strains were obtained on the basis of clear zones on XAM. The strain, Bacillus licheniformis, produced higher xylanase (3.24 U/ml) was selected for further studies based on quantitative xylanase assay. Both cultural and medium parameters were optimized to yield

Sixty-six honey samples collected from various regions in Algeria were explored for their enzymes activities, hydrogen peroxide production, and 5-hydroxymethylfurfural (HMF) content in the aim to enrich national and international database information about the quality of Algerian honeys. Correlations among the studied parameters were also investigated. Regarding the botanical origins of the selected

Mathematical modeling of electrochemical dynamics and related patterning processes was developed primarily for variants of the activator-inhibitor mechanism and focused more on electro-catalysis than electrodeposition. In addition, these phenomena are expressed mathematically generally by the reaction–diffusion model, instead artificially, it is the evaluation of reactive species as state concentrations

Pulses are excellent source of protein, fiber and other key nutrients. Fermented pulse-based products are routinely used in many parts of India. In this study, an attempt has been made to isolate potent probiotic lactic acid bacteria from traditionally fermented Vigna radiata (mung beans) and Cajanus cajan (pigeon pea). Fermented seed samples of both the pulses were used for the isolation of lactic

The present study was aimed to extract tannins from methanolic extracts of Salix alba and determination of their antimicrobial potential. Antibacterial activity of tannins extracted from S. alba leaves and stem bark methanolic extracts was determined by using agar well diffusion assay against seven Gram-positive and Gram-negative bacterial strains including Streptococcus pyogenes, Staphylococcus aureus

Carnitine palmitoyltransferase 1A (CPT1A) is a potential therapeutic target for several cancers. The inhibition of CPT1A has anticancer effects. Teglicar is a new reversible CPT1A inhibitor. The aim of this research was to expound the effect of teglicar in cervical cancer cells. Cell proliferation was conducted using the CCK8 assay. The apoptotic rate was examined by Annexin V-APC/PI staining and flow

The effects of optical polarons on qubit coherence times in a RbCl quantum dot (QD) under a pseudoharmonic potential (PHP) are theoretically investigated using Fermi’s Golden Rule and Pekar type variational method (PTVM). From this, coherence time variations are analytically driven as a function of the chemical potential (CP) of two-dimensional electron gas (2DEG), polaron radius and PHP zero point

The effects of internal electric field on the spectral characteristics of InxGa1−xN/GaN superluminescent light-emitting diodes are studied theoretically. The Schrödinger and Poisson equations and the rate and optical propagating equations are solved in the presence of the internal electric field. By increasing the indium mole fraction in the quantum well, the internal electric field increases linearly

In this paper, we calculate the characters of two classes of P-polynomial table algebras. To this end, we apply some linear algebra methods and tridiagonal matrices to obtain the characters of these table algebras.

Guide to the Expression of Uncertainty in Measurement (GUM) based on Law of Propagation of Uncertainty is widely used in estimation of uncertainty associated with measurements. However, Joint Committee for Guides in Metrology (JCGM) (JCGM 101:2008, 2008) suggests the use of Monte Carlo method (MCM) which is based on propagation of distributions as an alternate tool for evaluation of uncertainty of

We investigate the central nucleus–nucleus collisions at 4.2 A GeV/c exploiting the simulated results, obtained from ultra-relativistic quantum molecular dynamic model code1.3. The method used for quantitative analysis is free of the undesired background contributions and needs no prior information. The procured results reveal that the nearest neighbor momentum spacing correlation among the secondary

Spinel-type oxide MgMnO3 and perovskite-type oxide SrMnO3 have been synthesized by two-step procedures comprising the hydrothermal and solid-state methods. The as-prepared catalysts were characterized by X-ray powder diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis and the morphologies of the synthesized materials were figured out by field emission scanning electron

Rutherfordium is the synthetic and unstable element. It undergoes different radioactive decays such as alpha decay, beta decay, proton decay and spontaneous fission. In the present work, we have studied the competition between different decay modes such as alpha decay, beta decay, cluster decay, proton decay and spontaneous fission of Rutherfordium. By studying the competition between different decay

Novel isocoumarin-derived copolymer systems of 2-(isocoumarin-3-yl)-2-oxoethyl methacrylate (ICEMA) with methyl methacrylate (MMA) were prepared by free radical polymerization. The ICEMA monomer ratios at the copolymer compositions were found to be 25%, 48% and 64% ICEMA by integration method in 1H-NMR technique. Thermal decomposition studies of copolymer systems were performed by thermogravimetric

Abstract This study aims to enhance the photocatalytic properties and stability of polyaniline (PANI) by preparing polyaniline–metal oxide composites. Polyaniline and polyaniline–metal oxide composites were synthesized via chemical polymerization method and characterized by using scanning electron microscopy, X-ray diffraction (XRD), energy-dispersive X-ray analysis, and Fourier transform infrared

Approximation theory has a significant place in the studies in mathematics, and the researches on it are increasing with each passing day. Accordingly, a number of studies have been presented about Bernstein approximation which is one of the most known linear positive operators. In this study, a new modification of Bernstein operators which fix constant and preserve Korovkin’s other test functions

Drought stress is a major concern for current agriculture as it limits plant growth and yield. An experiment was conducted with a drought susceptible rice (Oryza sativa L. cv. BRRI dhan29) to explore the potential functions and possible mechanisms of exogenous glutathione (GSH)-induced drought stress tolerance. Fifteen-day-old seedlings, GSH-pretreated or non-pretreated (0.2 mM GSH for 72 h), were

Many conventional experimental analyses have helped us to understand most of the properties of plasma wave interactions and its behavior; nonlinear dynamics has helped us to enhance our analysis. In this paper we have tried to analyze a plasma jerk system for an ion cyclotron plasma oscillation in a magnetic field by including a higher-order source term caused by large-amplitude fluctuations. The multistability

In this research, the cotton fabric was modified with bismuth oxide nanoparticles (Bi2O3 NPs) by a simple method. Bismuth oxide nanoparticles were synthesized by chemical reduction of bismuth salt using nitric acid as reducing agent. In situ method was used for synthesis and deposition of bismuth oxide nanoparticles on cotton fabrics. The samples were characterized by X-ray diffraction for evaluation

In this work, we present a Durrmeyer-type operator having the basis functions in summation and integration due to Aral (Math Commun 24:119–131, 2019) and Pǎltǎnea (Carpath J Math 24(3):378–385, 2008) that preserve the constant functions. We compute the rate of convergence of these operators in a weighted space and also computed a quantitative Voronovskaja-type asymptotic formula as well as a Grüss-Voronovskaya-type

Experimental data from JINR and UrQMD (latest code 3.3p2) model simulations have been used to estimate temperature and other properties of positive pions in collisions of protons with carbon nuclei at incident momentum of 4.2 GeV/c. Transverse mass and transverse momentum spectra have been used to get temperature of said particles, with the help of some fitting equations. These equations are referred

This work analytically solved the radial Schrödinger equation with an exponential, generalised, anharmonic Cornell potential using the series expansion method. It also obtained the bound state energy spectra. Through suitable adjustments to the potential parameters, the well-known potential models, such as the pseudoharmonic and Kratzer potentials, were deduced. With the potential parameters also adjusted

Centralized data development analysis has attracted more attention on the resource allocation by several studies. However, the underlying concepts and practical treatments are not systematically exposures and explanation till now. For filling with this gap, this study aims to elaborate more on how the centralized data envelopment analysis works from a different perspective. Therefore, we proposed a

Removal of Eriochrome Black T (EBT) dye by using cheap and abundant Al2O3 nanoparticles surface was investigated in this work. Weight of Al2O3 nanoparticles, pH and temperature influence on EBT dye removal was optimized by central composite design coupled with response surface methodology. The obtained removal percentage was in a good agreement with the predicted removal percentage. The minimizing

Poly(acryloyl chloride) (PAC) was first reacted with oxidized MWCNT to form oxidized MWCNT-g-PAC. Then, aminated MNP were bonded to the oxidized MWCNT-g-PAC to form oxidized MWCNT-g-PAC-g-aminated MNP. The chemical characterization for primary and the product materials was performed using FT-IR spectroscopy. SEM images and SEM–EDX were used for the surface morphology and elemental characterization

The genus Teucrium L. is a well-known medicinal plant belonging to Lamiaceae family and Ajugoideae subfamily. The present study aims to evaluate the taxonomic status of the Teucrium species using both morphological and flavonoid characteristics and to determine the flavonoid classes. A total of 64 accessions belonged to eight species, and five subspecies were collected from different Zagros regions

Let G be a locally compact group (not necessarily abelian) and B be a homogeneous Banach space on G which is in a good situation with respect to a homogeneous function algebra \((A,\Vert .\Vert _{A})\) on G. Feichtinger showed that there exists a minimal Banach space \(B_{\rm{min}}\) in the family of all homogeneous Banach spaces C on G containing all elements of B with compact support. In this paper

Thermal and morphological analysis of shape memory alloys is one of the important branches of research to obtain new characteristics. In this study, low amounts of tantalum were added into CuAlNi alloy. The alloy was produced with the induction melting method. The phase transformation of the alloys was characterized by DSC and electrical resistivity for an equal range of temperatures. The alloys showed

The third-party misuse and manipulation of digital images are a threat to the security and privacy of human subjects. In this paper, we report a system which effectively compresses and encrypts images to achieve secure transmission of image data with minimal bandwidth. The proposed system utilizes autoencoder for compression and chaotic logistic map for encryption. Autoencoder is an unsupervised deep

Among the lofty mountains of Karakoram ranges in Northern Pakistan, lies the Hunza Valley, home of a community of disease and cancer free people said to survive longer with life expectancy of around 100 years, whereas the average life expectancy in Pakistan is 67 years. Indoor radon measurements were carried out in the five villages of Hunza-Valley. The average Radon concentration levels were found

In this study, the gamma radiation attenuation was experimentally investigated for soil samples with different texture collected from Bursa Province, Turkey. Firstly, physical and chemical properties (e.g., density, particle size distribution, lime content, organic matter and chemical composition) of these soils were determined by several methods. The transmission measurements of soils performed by

The present work deals with studying magneto-viscous fluid flow around a weakly permeable cylinder bounded by a cylindrical container under the effect of an applied magnetic field. Based on Happel and Kuwabara cell model technique, an analytical solution of the problem is evaluated. Considered flow is separated into the outer viscous fluid region and inner permeable region governed by modified Stoke’s

The symbiotic fungi improve the growth parameters of plants under environmental stresses. To investigate the effect of endophytic fungi under water stress, we investigated the symbiosis of two new isolated endophytic fungi Curvularia spicifera and Gibberella thapsina from Chenopodiaceae species (Kochia stellaris and Chenopodium album) versus mycorrhizal (Funneliformis mosseae) and Serendipita indica

In this paper, it is considered to find a way for defining non-commutative spaces by ordinary commutative ones and vice versa. A novel parameter which has not been considered so far is represented. This parameter describes equivalent spaces. Also, we searched concepts of these new parameters with one problem. Non-commutativity in total space is important here because it could explain more concepts

Let \(\Delta \) be the unit disk on the complex plane \(\mathbb{C}\) and \(\mathcal{A}\) be the class of normalized analytic functions in \(\Delta \). We denote by \(\mathcal{S}_{\alpha }(\beta )\) the class of \(\alpha \)-spirallike functions f of order \(\beta \) as follows $$\begin{aligned} \mathcal{S}_{\alpha }(\beta ):=\left\{ f\in \mathcal{A}: \mathrm{Re}\left\{ e^{i\alpha }\frac{zf'(z)}{f(z)}\right\}

The spin effect of bound magnetopolaron in an asymmetry quantum well is studied by Pekar variational method. The expression of the ground state energy of bound magnetopolaron is obtained through theoretical derivation. The relationship between the ground state energy of the polaron and the wave vector, the well width, the magnetic field cyclotron resonance frequency, and the Coulomb bound potential

A novel method was utilized for the synthesis of Tin (IV) oxide nanoparticles using the leaf extract of Carica papaya, Murraya Koenigii, Moringa Oleifera, and Acalypha Indica. The leaf extract acts as an excellent stabilizing, reducing and capping agent for nanoparticles. From XRD analysis, we found that the average crystallite size of SnO2 nanoparticles was equal to 5 nm (SnO2–CP), 19 nm (SnO2–MK)

Groundwater has emerged to be a formidable poverty reduction tool in many developing countries because it can be distributed to poor communities far more cheaply, quickly and easily. This study investigated the applicability of seasonal actual evapotranspiration (\({\mathrm{ET}}_{\mathrm{a}}\)) in modeling trends in water table depth level and vegetation cover using in the Zayanderud basin, Iran. To

A study was performed to determine how bioinformatics algorithms could be employed to classify and estimate 50 potato commercial and wild populations using microsatellite (SSR) markers. In this study, 40 SSR primers were used for estimating the genetic structure of all 50 potato populations. The data were generated in two different experiments including 32 wild and 18 commercial accessions. The results

In this paper, the life distribution behavior of a generalization of the mixed \(\delta\)-shock models in the multi-state systems is studied. In this model, the k out of interarrival times between two successive shocks with a magnitude less than \(\delta\) have a disaster result on the system which causes a complete failure. In addition to this event, another factor called the magnitude of shock causes

In this paper, we obtain some Hermite–Hadamard type inequalities for h-convex functions. Also, some applications to special means of real numbers are given. The results presented here provide extensions of those given in earlier works.

This article addresses the problem of developing new expressions for the Drazin inverse of complex block matrix \(M=\left( \begin{array}{cc} A &{} B \\ C &{} D \\ \end{array} \right) \in {\mathbb {C}}^{n\times n}\) (where A and D are square matrices but not necessarily of the same size) in terms of the Drazin inverse of matrix A and of its generalized Schur complement \(S=D-CA^DB\) which is not necessarily

Recently Karzel and Taherian introduced the concept of a group with collinearity \((G, \kappa )\) and showed that for \(\alpha \in G \) the maps $$\begin{aligned} {{\tilde{\alpha }}}{:} \ G \rightarrow G ;~ \xi \mapsto \alpha \cdot \xi ^{-1} \cdot \alpha \end{aligned}$$ of the corresponding reflection structure \((G , {\widetilde{G}} )\), where \( {\tilde{G}} := \{{{\tilde{\gamma }}} \ | \ \gamma \in

Sonodynamic therapy was appeared as a minimally invasive treatment that is based on the use of low-intensity ultrasound waves with a chemical agent that can be activated by ultrasound (US). The aim of this study was to evaluate the effect of hematoporphyrin (HP) and hematoporphyrin-encapsulated mesoporous silica nanoparticle (HP-MSN) with sonodynamic therapy in an animal model of breast adenocarcinoma

Swirling flows are frequently detected in nature such as combustion chambers, meteorological systems, turbomachines and their associated ducting, and cyclone separators. Due to the ability of rate type fluid to show time retardation and relaxation in their flow phenomenon. The current research is focused on the Jeffrey liquid flowing normally to a spiraling disk with constant rotation and radial stretching