Modeling and analysis of an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si7.svg"><mml:mrow><mml:mi>S</mml:mi><mml:msub><mml:mi>I</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:msub><mml:mi>I</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>R</mml:mi></mml:mrow></mml:math> epidemic model with nonlinear incidence and general recovery functions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si8.svg"><mml:msub><mml:mi>I</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math>

A.A Thirthar; Raid Kamil Naji; F Bozkurt; A. Yousef

doi:10.1016/j.chaos.2021.110746

Details

Publication Date

Thu Apr 01 2021

Journal Name

Chaos, Solitons & Fractals

Volume

145

DOI

10.1016/j.chaos.2021.110746

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Modeling and analysis of an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si7.svg"><mml:mrow><mml:mi>S</mml:mi><mml:msub><mml:mi>I</mml:mi><mml:mn>1</mml:mn></mml:msub><mml:msub><mml:mi>I</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mi>R</mml:mi></mml:mrow></mml:math> epidemic model with nonlinear incidence and general recovery functions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si8.svg"><mml:msub><mml:mi>I</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math>

A.A Thirthar

Raid Kamil Naji

F Bozkurt

A. Yousef

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Publication Date

Sun Mar 02 2014

Journal Name

Baghdad Science Journal

An Approximated Solutions for nth Order Linear Delay Integro-Differential Equations of Convolution Type Using B-Spline Functions and Weddle Method

nth Order Linear Delay Integro-Differential Equation of Convolution type

Collocation method

B-spline Functions and Weddle method.

Raghad K.

Isra'a H.

Atheer J.

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The paper is devoted to solve nth order linear delay integro-differential equations of convolution type (DIDE's-CT) using collocation method with the aid of B-spline functions. A new algorithm with the aid of Matlab language is derived to treat numerically three types (retarded, neutral and mixed) of nth order linear DIDE's-CT using B-spline functions and Weddle rule for calculating the required integrals for these equations. Comparison between approximated and exact results has been given in test examples with suitable graphing for every example for solving three types of linear DIDE's-CT of different orders for conciliated the accuracy of the results of the proposed method.

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Publication Date

Tue Feb 04 2014

Journal Name

Al-mustansiriyah

Synthesis, Spectroscopic and Biological Studies of some Metal Complexes with 2, 4-dinitro-2-amino hydrozo benzene.

Shaimaa

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Publication Date

Sun Mar 02 2014

Journal Name

Baghdad Science Journal

Copolymerazaion of N-vinyl-2-pyrrolidon with Acrylic Acid and Methylmethacrylate

n-vinyl-2-pyrrolidon

acrylic acid

methymethacrylate

copolymerization

reactivity ratio.

Rana R.

Mahmoud A.

Redha I.

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Low conversion copolymerization of N-vinyl-2-pyrrolidon M.W = (111.14) VP (monomer-1) has been conducted with acrylic acid AA and methymethacrylate MMA in ethanol at 70ºC , using Benzoyl peroxide BPO as initiator . The copolymer composition has been determined by elemental analysis. The monomer reactivity ratios have been calculated by the Kelen-Tudos and Finman-Ross graphical procedures . The derived reactivity ratios (r1 , r2 ) are : (0.51 , 4.85) for (VP / AA ) systems and (0.34 , 7.58) for (VP , MMA) systems , and found the reactivity ratios of the monomer AA , MMA is mor than the monomer VP in the copolymerization of (VP / AA) and (VP /MMA) systems respectly . The reactivity ratios values were used for microstructures calculation.

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Publication Date

Wed Jan 01 2014

Journal Name

Department Of Bioengineering And Sciences

1 T.R. KAHRAMANMARAŞ SÜTÇÜ İMAM UNIVERSITY GRADUATE SCHOOL OF NATURAL AND APPLIED SCIENCE Cloning and overexpression of Lactobacillus acidophilus bile salt hydrolase A gene (bshA) in Escherichia coli

Probiotic Lactobacillus acidophilus Ar

E. coli MC1022

Bile salt hydrolase

bshA genes.

Atheer

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The bile salt hydrolase gene (bshA), encoding bile salt hydrolase enzyme (EC 3.5.1.24) from probiotic isolate Lactobacillus acidophilus Ar strain which is responsible for assimilation cholesterol were studied in the present work. About 801 bp in length DNA fragment of Lb. acidophilus Ar strain was amplified by PCR techniques. Two restriction sites (PstI/SacI) were added to each end of that fragment for manipulation of DNA during cloning. Amplified fragment inserted into pJET1.2\blunt end vector and pMG36e vector respectively. pJET1.2\blunt end vector is overexpression plasmid for E. coli MC1022, and pMG36e vector is a shuttle vector which is able to replicate in both E. coli and lactic acid bacteria. The resulted constructs were named as pJ

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Publication Date

Fri Jan 01 2021

Journal Name

Aip Conference Proceedings

Plasma levels and diagnostic utility of MMP-2 and TIMP-2 in the diagnosis of Iraqi women with breast tumor: A comparative study with Ca 15-3

Aseel N.

Manwar A.

Jinan A. K.

Basil O.

Mays N.

Kifah H.

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Publication Date

Fri Jan 01 2021

Journal Name

Aip Conference Proceedings

Plasma levels and diagnostic utility of MMP-2 and TIMP-2 in the diagnosis of Iraqi women with breast tumor: A comparative study with Ca 15-3

Manwar

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Publication Date

Tue May 31 2022

Journal Name

Journal Of Positive School Psychology

A GENRE-BASED ANALYSIS OF POLITICAL SPEECHES IN THE UN GENERAL ASSEMBLY

Nawal

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Publication Date

Fri Jul 01 2022

Journal Name

Advanced Powder Technology

Modification of FAU zeolite as an active heterogeneous catalyst for biodiesel production and theoretical considerations for kinetic modeling

Ziad T.

Thaer M.

Talib M.

Ammar S.

Aidan M.

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Publication Date

Sun Jun 01 2025

Journal Name

Journal Of The Iraqi University

History, Identity, and Marginalization: An Analysis of Andrea Levy's (The Long Song)

JAMAICA

CARIBBEAN

IDENTITY

Psychology

SLAVERY

HISTORICAL source material

IMPERIALISM

SOCIAL marginality

LEVY

Andrea

CULTURAL relations

Amani

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Abstract The painful history of slavery has profoundly affected the identities and social interactions of Afro-Caribbean migrants, whose descendants continue to contend with prejudice and socio-economic marginalization. Andrea Levy's semi-autobiographical novel, The Long Song (2010), traces the turbulent history of Jamaica in the nineteenth century through the lens of Miss Kitty, a character based on Levy's great-great-great grandmother, who was born a slave on the plantation Amity in Saint Catherine's parish. The narrative blends the historical with the fictional and depicts various environmental contexts, inscribed meanings, and human exchanges, including the prominence of social situations perceived through race and class tensions ironic

Publication Date

Tue Jun 01 2021

Journal Name

Baghdad Science Journal

Three-Dimensional Nonlinear Integral Operator with the Modelling of Majorant Function

Majorant function

Modified Newton method

Non-linear integral operator.

Hameed Husam

Hayder M

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In this paper, the process for finding an approximate solution of nonlinear three-dimensional (3D) Volterra type integral operator equation (N3D-VIOE) in R³ is introduced. The modelling of the majorant function (MF) with the modified Newton method (MNM) is employed to convert N3D-VIOE to the linear 3D Volterra type integral operator equation (L3D-VIOE). The method of trapezoidal rule (TR) and collocation points are utilized to determine the approximate solution of L3D-VIOE by dealing with the linear form of the algebraic system. The existence of the approximate solution and its uniqueness are proved, and illustrative examples are provided to show the accuracy and efficiency of the model.

Mathematical Subject Classificat

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