In this paper, the medium correction factor for lung, muscle, blood and bone was calculated using analytical method and MCNP simulation for different beam qualities. To validate the calculation method, the medium correction factor of the PTW-30013 ionization chamber for air was specified by measuring the air kerma and the absorbed dose to water calibration coefficients in the standard radiation field

The macroscopic behavior of networks, when facing random removal of nodes or edges, can be described as an inverse percolation process in a random graph. To determine whether a network remains operational when its elements (nodes or edges) fail at random, a “network robustness” criterion is used as a probabilistic measure. In this paper, we used percolation theory to assess this criterion for a network

Homocysteine (Hcys) is a risk factor involved in the development of cardiovascular diseases. Hcys-induced oxidative stress has been proposed as a major mechanism contributing to the cardiotoxicity. Curcumin (CUR), a powerful antioxidant, exhibits cardioprotective activity against cardiotoxicity. The present study aimed to study the ameliorative action of CUR against cardiotoxicity induced by l-Methionine

Nitazoxanide is one broad-spectrum antiparasitic drug, and its potential uses in clinic have attracted much attention in the past decades. The interaction of nitazoxanide with bovine serum albumin (BSA) was investigated systematically by fluorescence spectroscopy, UV–Vis absorption spectroscopy, CD spectroscopy and molecular docking study. The results indicated that the fluorescence quenching of BSA

In this paper we obtain \(\lambda ^{(n)}(F(m, k))\) where \(2\le n \le 6\), \(m > 6\) and \(k\ge 0\). Also we calculate \(\lambda ^{(n)}(F(m, k))\) for \(3\le m \le 6\), \(n\ge 2\) and \(k\ge 0\).

Let G be a graph such that the color of its vertices is white or black. A dynamic vertex coloring for G is defined as follows. One starts with a certain set of black vertices. Then, at each time step, a black vertex with exactly one white neighbor forces its white neighbor to become black. The initial set of black vertices is called a zero forcing set if by iterating this process, all of the vertices

Recently, the great interests in application of natural product have led to focus on the potential impact on bio macromolecules. Propolis is one of the natural products with various biological activities such as anti-diabetic effect. Under hyperglycemia, hemoglobin (Hb) frequently undergoes non-enzymatic glycation which affect its structure and function. In this study, the binding interaction between

Alfalfa (Medicago sativa), known as green gold, is one of the best-known forage plants in the world. Alfalfa is an autotetraploid allogamous plant with a large genetic diversity among its cultivars. This diversity is due to self-incompatibility, a high rate of allogamy, and open pollination. This study aimed to investigate the biodiversity of grain storage proteins of M. sativa using gel electrophoresis

In this paper, the fractional pantograph equations in quantum calculus are studied. We propose a q-fractional variant of the nonlinear pantograph equation with a given initial condition and a nonlinear neutral q-fractional pantograph equation. Based on the fixed-point theory, the main theorems provide some new results regarding the existence and uniqueness of solutions for q-fractional pantograph equations

Two dihydropyrimidinone derivatives (DHPM) were synthesized via the multi-component reaction, the yield of the synthesis reached 90%, and their structures were proved by IR, 1H and 13C NMR spectroscopy. The identified molecules were used for studying the corrosion inhibition of XC48 carbon steel in 0.5 mol L−1 H2SO4 solution. The inhibitory potentials of these compounds were determined by electrochemical

In this paper, some characterizations for the boundedness, compactness and essential norm of a class of product-type operators on the Zygmund space are given.

The ecological theory of species interactions rests largely on the competition, interference, and predator–prey models. In this paper, we propose and investigate a three-species predator–prey model to inspect the mutual interference between predators. We analyze boundedness and Kolmogorov conditions for the non-spatial model. The dynamical behavior of the system is analyzed by stability and Hopf bifurcation

In this paper, we first provide a better estimate of the second inequality in Hermite–Hadamard inequality. Next, we study the reverse of the celebrated Davis–Choi–Jensen’s inequality. Our results are employed to establish a new bound for the operator Kantorovich inequality.

The main aim of this note is to unify some concepts and technics in various generalizations of maximal function theory. We consider two abstract versions of the Vitali covering lemma and introduce and study an abstract Hardy–Littlewood maximal inequality that generalizes the weak type (1, 1) maximal function inequality. Our abstract inequality can be stated for any outer measure on an arbitrary set

Numerous protein sequences simultaneously exist at multiple subcellular localizations and exhibit multiple functions. Multi-function characterization of the Unknown Protein Sequences (UPS) is useful for analyzing multi-symptom diseases and multi-target drugs. In this work, a multisite subcellular localization model is proposed for the multi-function characterization of UPS using augmented features

Unsteady heat transfer and entropy generation study on viscoelastic fluid coupled with the induced magnetic field over a stretching sheet using a numerical approach is presented in the current work. The induced magnetic field considered here is presumed to be formed with the movement of an electrically conducting fluid in the considered system. Viscoelastic fluid considered here is incompressible in

In this paper, we give a new lower bound for the eigenvalues of the Dirac operator defined on the Spin Riemannian hypersurface manifold endowed with 2-tensor, in terms of the Energy-Momentum tensor, scalar curvature and extrinsic curvature. Then this estimate is improved in two different ways by considering the conformal invariance of the Dirac operator. The first is given in term of the first eigenvalue

Phenolic compounds found in the human diet reveal a broad spectrum of biological activities. The present work describes the quantitative analysis of phenolic compounds in Coriandrum sativum vulgare (Csv) and Coriandrum sativum microcarpum (Csm) by HPLC–DAD analyses. The methanolic extracts of both varieties were analyzed by reverse phase HPLC. The method was validated in terms of linearity, precision

This paper considers the estimation of parameters for the inverse Gaussian regression model in the presence of multicollinearity. To mitigate this issue, we propose the inverse Gaussian James–Stein estimator (IGJSE) and compare its performance with other estimation methods i.e. maximum likelihood estimator (MLE), ridge and Liu estimators. Theoretical comparisons between the usual MLE, ridge, Liu and

We evaluated the leaf blade anatomical characteristics of thirty-three populations representing of 21 Nepeta L. taxa belonging to five sections from Iran to determine their taxonomic value in taxa delimitation and infrageneric classification in sections. Leaf samples of six individuals were examined per each population. The samples were fixed in F.A.A solution. The hand transverse sections were studied

In this research article, we construct a new sequence of Baskakov–Stancu–Durrmeyer operators including the shape parameter \(\alpha\) and study the uniform convergence of these operators by means of modulus of continuity to the continuous functions h(u) on \(u\in [0,1]\). We investigate the pointwise and weighted approximation in terms of Ditzian–Totik uniform with the aid of first and second order

This report was aimed to study the validity of vitamins A and E on the spermatogenesis disorders caused by titanium dioxide nanoparticles (TiO2 NPs). Thirty-six male Wistar rats were randomly divided into six groups. Two groups as controls received bi-distilled water and olive oil for three weeks, respectively. The third group treated with 300 mg/kg TiO2 NPs for two weeks. The other groups received

Biosorption is an efficient and environmental-friendly technology for the decontamination of dyes from industrial wastewater. These properties bio absorbent usage instead of commercial chemicals supports not only the “economic” dimension, but also “environment” and “social” dimensions of sustainability. As a novel bioadsorbent, methylene blue-resistant fungal strain Ulocladium consortiale was isolated

In this paper, we obtain the mixture representations for the extropy of a mixed used system and the extropy of the inactivity time of a system. These representations demonstrate the extropy of conditional mixed systems as a mixture of a conditional coefficients vector, left (or right) truncated beta distribution, and the baseline distribution of the system components. Based on these representations

Myocardial infarction (MI) is a serious threat to human health that creates millions of death annually. In this study, we went on to examine molecular mechanism of lavender oil that which by give rises to cardioprotection against MI. An MI model was established in male Wistar rats by ligation of the left anterior descending coronary artery (LAD) and lavender oil at 100 mg/kg concentration 1 h after

Edges of potential field sources often denote geologic features and are therefore a problem of fundamental importance in geological interpretation. There are many different methods for locating the source edges, most of which are based on the derivatives of the potential field data. In general, these methods can be divided into two main groups, namely amplitude-based methods and phase-based methods

This paper introduces the blossomed and grafted blossomed trees (BT and GBT, respectively) which are two new types of rooted trees. The trees consist of a finite number of solid and hollow vertices that represent buds and blossoms, respectively. Then the relation between them and derivative operators in a differential equation is analyzed. These concepts not only demonstrate how natural phenomena can

In this paper, we obtain an analytical solution for a system of multi-term linear fractional differential equations by using the analytic expression of inverse of multi-term fractional integral operator with matrix coefficients. The system of multi-term linear fractional differential equations is an efficient tool for solving the multi-term fractional partial differential equations. Firstly, several

This paper shall be concerned with the notion of von-Neumann regular acts. First, the notions of semiretraction homomorphisms and fully semiretractable (FSR) S-acts are introduced and some properties of them are investigated. Finally, using semiretraction notion, we investigate locally projective and von-Neumann regular S-acts.

Field studies and grain size analyses of the River Ero sediments illustrate the transportation, depositional processes, and depositional environment. The river channel sediments are sandy (devoid of fines), while the riverbank deposits are sandstones (thickly–thinly laminated) and mudrocks. Graphic litho-logs of the exposed riverbanks display sequences of sedimentary rocks deposited in two rhythmic

The aim of this paper is to present a reproducing kernel method for solving system of integro-differential equations with nonlocal boundary conditions. The solution obtained by using the present method takes the form of a convergent series with easily computable components. The analysis of convergence shows that the approximate solution and its derivatives converge to the exact solution and its derivatives

Wild pansy (Viola tricolor L.) is of the Violaceae plant family. Some of the medicinal properties of this plant are related to the ability to produce and biosynthesized a group of flavonoids. Silver nanoparticles are one of the most important and attractive nanomaterials among several metal nanoparticles.In the present study, plant-mediated nanosilver was produced from aqueous extract of Pansy flower

The manuscript deals with the study of the FLRW universe together with domain walls and quark matter in f(R, T) gravity where R is the Ricci scalar and T is the trace of the energy momentum tensor. We choose \(f(R,T)=R+\alpha R^2+\lambda T\). Exact solutions are obtained under the assumptions: (1) a constant and variable deceleration parameter of the form \(q=m-1\) and \(q=-\frac{\alpha _3}{t^2}+\beta

Increasing concerns about the emergence of antibiotic-resistant bacteria have drawn much attention for research efforts to introduce new types of antibacterial compounds among scientists. In the present report, 24 bacterial strains isolated from the coastal areas of the Persian Gulf in Iran were investigated in order to assess their potentials to produce antibacterial metabolites. Among these, the

In this paper, two subclasses of close-to-star functions and two subclasses of close-to-convex functions are studied. By using the coefficient estimates of the known Carathéodory function classes, the upper bounds of the Zalcman functional \({J}_{3,4}\), Hankel determinant \({{H}_{2}}(3)\) and Toeplitz determinant of given function classes are estimated. Some sharp results are obtained.

In this study, a new finding concerning the abnormality observed among species of Hottentotta zagrosensis collected from Khuzestan province of Iran is reported. This anomaly, present on the aculeus of the scorpion only, is herein described and illustrated. This is the first paper that attempts to report the anomalies in H. zagrosensis, and the causes of such anomalies in scorpions are unknown. Pictures

Salt stress is considered as the most critical environmental factor which negatively affects the germination, growth and establishment of trees and shrubs. Marine algae extract represents an important option of biostimulants which can improve the crop tolerance to abiotic stresses, such as salinity. In the present study, we investigated the potential of seaweed and microalga extracts as biostimulants

This paper deals with a class of nonlinear Mathieu fractional differential equations. The reported results discuss the existence, uniqueness and stability for the solution of proposed equation. We prove the main results by the aid of fixed point theorems and Ulam’s approach. The paper is appended with two applications that describe the force of periodic pendulum and the motion of a particle in the

Nanoparticles are being used in many areas in biotechnology. Silver nanoparticles are the most frequently used ones among the others, because of their eco-friendly natures. Biosynthetic silver nanoparticles have some beneficial effects on plant tissue cultures. However, their effects have rarely been investigated. In this study, biosynthetic nanoparticles were used at 0, 1, 2 and 4 mg/L concentration

This paper aims to study a (\(3+1\))-dimensional novel KP-like equation, which arises in the analysis of versions of resonant phenomena. The classical symmetry approach will be employed to search for exact solutions. Thereafter, we will search for the admitted conserved vectors of the mentioned novel KP-like equation. Although Kuo and Ma (Wave Random Complex, https://doi.org/10.1080/17455030.2020.1792580

Agbabu community in Ondo State Southwestern, Nigeria, is characterized by the high volume of bitumen deposit. The level of radon concentrations in soil gas and groundwater was assessed using RAD 7. Soil gas radon concentration ranged from 0.2 ± 0.1 kBqm−3 to 92.7 ± 2.4 kBqm−3 with an average of 20.6 ± 0.8 kBqm−3. The radon concentration in shallow wells water samples ranged from 9.8 ± 3.6 Bql−1 to

Adulteration has been one of the most significant global concerns in the field of infant formula quality control. Proteins and long-chain polyunsaturated fatty acid (LCPUFA) are the most important nutrients in the premature infant formula powder (PIFP), so that insufficient amounts of them may restrict proper growth and development. Rice flour (RF) and soybean powder (SP) are two inexpensive and harmful

In our previous works, we presented a theoretical approach to describe the behavior of a single-mode step-index optical fiber or polymer optical fiber such as poly (methyl methacrylate) or PMMA fiber coated by moisture-sensitive polymers (MSPs) and moisture-insensitive polymers periodically. The periodic structure is surrounded by a high young's modulus material such as stainless steel mesh. Absorption

The main aim of this paper is to use two-dimensional Bernoulli wavelet for obtaining the numerical solution of a nonlinear two-dimensional fractional partial Volterra integral equation. To do this, first, we construct the operational matrix of fractional integration as well as derivative of two-dimensional Bernoulli wavelet. Then, by applying the operational matrices and collocation method, we reduce

Climate change has been recognized as one of the biggest threats to biodiversity conservation. Therefore, predicting and quantifying the impacts of climate change on biodiversity can be useful for its conservation and management. In this regard, we forecasted climate-change effects on one of the common fish species in catches in south-western Iran, i.e. Garra rufa by using species distribution modelling

Fast neutron (flow) response measurement with silicon carbide (SiC) is investigated in a typical fusion–fission hybrid reactor, using the most current Monte Carlo transport code (MCNPX2.7.0). Silicon carbide is used as the clad of the fissile fuel assemblies. The elastic scattering of 28Si(n,p)28A1, 28Si(n,α)25Mg, 12C(n,α)9Be, 12C(n,n′)3α, 28Si(n, n′)28Si, and 12C(n,n′)12C was calculated, and the results

Generalized Sylvester quaternion matrix equation with some constrictions is explored in this paper. A novel expression of the general solution of the constraint system is given with some necessary and sufficient conditions. Its Cramer’s rule is derived within the framework of the theory of row-column quaternion determinants. An example is given to justify obtained theoretical results.

Let \({\mathcal {A}}\) and \({\mathcal {U}}\) be Banach algebras such that \({\mathcal {U}}\) is a Banach \({\mathcal {A}}\)-bimodule with compatible algebra multiplication, module actions and norm. By defining an appropriate action, we turn \(\ell ^1\)-direct product \({\mathcal {A}}\times {\mathcal {U}}\) into a Banach algebra such that \({\mathcal {A}}\) is a closed subalgebra and \({\mathcal {U}}\)

Elicitors, such as salicylic acid (SA), stand as the effective agents that are applied to plant cell suspension cultures for the fabrication of biomaterials. At this project, we have studied the elicitor effects on the increase in phenols, PAL activities, POX, and CAT enzymes that exist in the cell culture of Salvia leriifolia. Upon the addition of SA to the cell culture, an increase has been detected

This study highlights, for the first time, the effect of Algerian nettle (Urtica dioïca L.) water extract against some phytopathogens bacteria. Results showed that water extract exhibited high level of total phenol content (261.7 ± 5.1 mg g−1 GAE) and a remarkable antioxidant activity (IC50 = 20.0 ± 0.6 µg mL−1) comparable to Trolox as reference (IC50 = 16.5 ± 0.5 µg mL−1). Moreover, results showed

The existence of primodial radionuclides in the earth’s crust causes all soils to contain some amount of radioactivity. To increase the crop production, fertilizers are extensively used, which causes further increase in the radioactivity. In order to assess the increase in radioactivity level due to fertilizer, twenty eight (28) soil samples of virgin and fertilized soils from three tehsile of district

Nowadays, the use of medicinal herbs is very popular and many people use them to treat their diseases, so it is important to know the concentration of trace elements in these herbs. In this study, the concentration of 10 elements was measured by the method of instrumental neutron activation analysis (INAA) in two types of medicinal plants as Stachys lavandulifolia and Hymenocrater. Samples were taken

In this paper, a new decoding algorithm, called modified reduced lookup table decoding (MRLTD) algorithm, is proposed for decoding [47, 24, 11] quadratic residue (QR) code which needs lower memory requirement compared with the algorithm based on the full lookup table and the cyclic weight decoding algorithm (CWDA). Although the memory requirements (space complexity) of the proposed algorithm are the

Date palm (Phoenix dactylifera L.) is a member of the genus Phoenix in Arecaceae family. It is the cultivated species in this genus with great economical and social importance in our country. We used three chloroplast regions of rbcL, matK, and trnH‐psbA with the following aims: 1. To illustrate the cultivars phylogeny, 2. to identify nucleotide variations and identify the molecular events leading

To explore the impact of salicylic acid (SA) (0, 0.01, and 0.05 mM) and iron nanoparticles (INs) (0, 0.08, and 0.8 ppm) and their interaction on morpho-physiological response of strawberry to salinity stress (0, 50, and 100 mM NaCl), a three-way factorial experiment with three replications was conducted under in vitro condition. Based on the results, salinity not only decreased total dry weight (TWD)

An in situ facile growth procedure was developed in this paper, for the first time for preparing a hierarchical three-dimensional composite containing graphene layers with layered double hydroxide (LDH) nanosheet groups. The production procedure includes covering TiOOH colloids over the graphene surfaces and the following in situ evolution of layered NiTi-LDH nanosheet groups on the graphene sheets

In this paper, Spectral Galerkin Method is applied for Cauchy problem of Helmholtz and Laplace equations in the regular domains. It is well known that these problems have severely ill-posed solutions. Accordingly, regularization methods are required to overcome the ill-posedness issue. In this paper, we utilize the regularization method based upon mapped methods. These methods include Tikhonov and

The fractional nonlinear coupled viscous Burgers and Korteweg-de Vries (KdV) evolutionary equations model various interesting phenomena in engineering and applied sciences. Therefore, their accurate numerical modeling and solution behavior are very important. In this article, radial basis functions (RBFs) approach is proposed and analyzed for the numerical solutions of time-fractional coupled Burgers’

We investigated genome size and stomatal characteristics of guard cells of several Iranian accessions belonging to three Lepidium species. Average 2C DNA of L. sativum and L. latifolium accessions was estimated at 1.23 and 2.07 pg, respectively, and all accessions were diploid. 2C value of L. draba accessions was in the range of 1.11–2.29 pg. Results of cluster analysis on the basis of nuclear 2C DNA