Mathematics, Statistics & Physics: المرسلات الحديثة
السجلات المعروضة 281 -- 300 من 783
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Revisited carmichael's reduced totient function
( MDPI AG , 2021 , Article)The modified Totient function of Carmichael ?(.) is revisited, where important properties have been highlighted. Particularly, an iterative scheme is given for calculating the ?(.) function. A comparison between the Euler ... -
Some Majorization Integral Inequalities for Functions Defined on Rectangles Via Strong Convexity
( Ilirias Research Institute , 2019 , Article)In this paper, we have extended some integral majorization types and generalized Favard’s inequalities from functions defined on intervals to functions defined on rectangles via strong convexity and apply the results to ... -
Herd immunity against severe acute respiratory syndrome coronavirus 2 infection in 10 communities, qatar
( Centers for Disease Control and Prevention (CDC) , 2021 , Article)We investigated what proportion of the population acquired severe acute respiratory syndrome coronavirus 2 (SARSCoV- 2) infection and whether the herd immunity threshold has been reached in 10 communities in Qatar. The ... -
Estimates of global SARS-CoV-2 infection exposure, infection morbidity, and infection mortality rates in 2020
( Elsevier , 2021 , Article)We aimed to estimate, albeit crudely and provisionally, national, regional, and global proportions of respective populations that have been infected with SARS-CoV-2 in the first year after the introduction of this virus ... -
Distinct Clinical and Prognostic Features of Myelodysplastic Syndrome in Patients from the Middle East, North Africa, and Beyond: A Systemic Review
( Multidisciplinary Digital Publishing Institute (MDPI) , 2023 , Article)Myelodysplastic syndrome (MDS) describes a group of bone marrow malignancies with variable morphologies and heterogeneous clinical features. The aim of this study was to systematically appraise the published clinical, ... -
Association of single nucleotide polymorphisms with dyslipidemia and risk of metabolic disorders in the State of Qatar
( Wiley-Blackwell , 2023 , Article)Background: Dyslipidemia is recognized as one of the risk factors of cardiovascular diseases (CVDs), type 2 diabetes mellitus (T2DM), and non-alcoholic fatty liver disease (NAFLD). Objective: The study aimed to investigate ... -
Structural influence of chromium substituted magnetite ferrofluids on the optical and antibacterial characteristics
( Elsevier Ltd , 2023 , Article)A series of chromium substituted magnetite (CrxFe1?xFe2O4) ferrofluids with various concentrations ranging from x = 0-0.8 is reported in this work. Simple, cost effective and gentle co-precipitation method is followed for ... -
Correlating the rheological and magneto-optical properties of cobalt substituted magnetite ferrofluids (CoxFe1?xFe2O4) with theoretical studies
( Elsevier B.V. , 2023 , Article)Magnetite ferrofluids are widely reported due to their outstanding physicochemical, magnetic and antibacterial properties. This study focusses on the synthesis of magnetite ferrofluids and the effect of Co2+ substitution ... -
Molybdenum oxide reinforced polyvinyl alcohol composite as high-performance dielectric material for flexible electronics
( Springer , 2023 , Article)Polymer dielectrics are highlighted as capable energy storing materials due to their better dielectric strength and supreme versatility compared to inorganic ceramic dielectrics in sophisticated electronics and pulsed power ... -
On Time-Dependent Rheology of Sutterby Nanofluid Transport across a Rotating Cone with Anisotropic Slip Constraints and Bioconvection
( MDPI , 2022 , Article)The purpose and novelty of our study include the scrutinization of the unsteady flow and heat characteristics of the unsteady Sutterby nano-fluid flow across an elongated cone using slip boundary conditions. The bioconvection ... -
Computational Analysis for Bioconvection of Microorganisms in Prandtl Nanofluid Darcy-Forchheimer Flow across an Inclined Sheet
( MDPI , 2022 , Article)The two-dimensional boundary layer flow of a Prandtl nanofluid was explored in the presence of an aligned magnetic field over an inclined stretching/shrinking sheet in a non-Darcy permeable medium. To transform the PDEs ... -
On Thermal Distribution for Darcy-Forchheimer Flow of Maxwell Sutterby Nanofluids over a Radiated Extending Surface
( MDPI , 2022 , Article)This study addresses thermal transportation associated with dissipated flow of a Maxwell Sutterby nanofluid caused by an elongating surface. The fluid passes across Darcy-Forchheimer sponge medium and it is affected by ... -
Common fixed point theorems for two pairs of self-mappings in partial metric space using C-class functions on (ψ, ϕ)-contractive condition
( International Scientific Research Publications , 2018 , Article)The purpose of this paper is to introduce common fixed point results for two pairs of weakly compatible self-mappings in partial metric space using C-class functions on (ψ, ϕ)-contractive condition. Example and application ... -
Solving a class of integral equations via contractive mapping with rational type
( New York Business Global , 2020 , Article)In this paper, using rational type contractive conditions, the existence and uniqueness of common coupled fixed point theorem in the set up of Gb-metric spaces is studied. The derived result cover and generalize some ... -
A new approach in the context of ordered incomplete partial b-metric spaces
( De Gruyter Open Ltd , 2020 , Article)The main purpose of this paper is to find some fixed point results with a new approach, particularly in those cases where the existing literature remains silent. More precisely, we introduce partial completeness, f-orbitally ... -
Some fixed and periodic point results for generalized contractions on partial ordered metric space with applications in metric space
( Boletim da Sociedade Paranaense de Matematica , 2021 , Article)In this paper, we introduce new type of Θ-contraction in termof a self-mapping on a metric space to obtain common fixed point results. Some examples arealso provided to support the validity of our results and concepts ... -
Extremal number of theta graphs of order 7
( Boletim da Sociedade Paranaense de Matematica , 2021 , Article)For a set of graphsF, letH(n;F) denote the class of non-bipartiteHamiltonian graphs onnvertices that does not contain any graph ofFas a subgraphandh(n;F) = max{E(G) :G∈H(n;F)}whereE(G) is the number of edges inG.In this ... -
On existence and uniqueness of best proximity points for proximal β-quasi contractive mappings on metric spaces
( Forum-Editrice Universitaria Udinese SRL , 2021 , Article)This paper focus on the study of the generalization of the best proximity point theorems for non-self contractions. In fact we propose two new theorems on the existence and the uniqueness of best proximity points for ... -
Some remarks concerning D∗-metric spaces
( International Scientific Research Publications , 2020 , Article)In [S. Sedghi, N. Shobe, H. Y. Zhou, Fixed Point Theory Appl., 2007 (2007), 13 pages], Sedghi et al. introduced the notion of D∗ -metric space and in [S. Sedghi, N. Shobe, A. Aliouche, Mat. Vesnik, 64 (2012), 258–266] the ... -
Existence of a tripled coincidence point in ordered Gb-metric spaces and applications to a system of integral equations
( Springer , 2013 , Article)In this paper, tripled coincidence points of mappings satisfying some nonlinear contractive conditions in the framework of partially ordered G b-metric spaces are obtained. Our results extend the results of Aydi et al. ...
