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Dissipative Properties of ω-Order Preserving Partial Contraction Mapping in Semigroup of Linear Operator

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Advances in Pure Mathematics 2019年第6期9卷 544-550页

作者： Akinola Yussuff Akinyele Kamilu Rauf aasa moses adebowale Omosowon Jude Babatunde Department of Mathematics University of Ilorin Ilorin Nigeria

This paper consists of dissipative properties and results of dissipation on infinitesimal generator of a C0-semigroup of ω-order preserving partial contraction mapping (ω-OCPn) in semigroup of linear operator. The purpose of this paper is to establish some dissipative properties on ω-OCPn which have been obtained in the various theorems (research results) and were proved.

关键词： Semigroup Linear Operator Dissipative Operator Contraction Mapping and Resolvent

Exponentially-Fitted 2-Step Simpson’s Method for Oscillatory/Periodic Problems

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Journal of Applied Mathematics and Physics 2016年第2期4卷 368-375页

作者： Ashiribo Senapon Wusu Bosede Alfred Olufemi Akanbi moses adebowale Department of Mathematics Lagos State University Lagos Nigeria

Following a six-step flow chart, exponentially-fitted variant of the 2-step Simpson’s method suitable for solving ordinary differential equations with periodic/oscillatory behaviour is constructed. The qualitative properties of the constructed methods are also investigated. Numerical experiments on standard problems confirming the theoretical expectations regarding the constructed methods compared with other existing standard methods are also presented. Our results unify and improve the existing classical 2-step Simpson’s method.

关键词： Exponentially-Fitted Simpson Method Oscillatory Periodic ODE

An Explicit Single-Step Nonlinear Numerical Method for First Order Initial Value Problems (IVPs)

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Journal of Applied Mathematics and Physics 2020年第9期8卷 1729-1735页

作者： Omolara Fatimah Bakre Ashiribo Senapon Wusu moses adebowale Akanbi Department of Mathematics & Statistics Federal College of Education (Technical) Lagos Nigeria Department of Mathematics Lagos State University Lagos Nigeria

Interest in the construction of efficient methods for solving initial value problems that have some peculiar properties with it or its solution is recently gaining wide popularity. Based on the assumption that the solution is representable by nonlinear trigonometric expressions, this work presents an explicit single-step nonlinear method for solving first order initial value problems whose solution possesses singularity. The stability and convergence properties of the constructed scheme are also presented. Implementation of the new method on some standard test problems compared with those discussed in the literature proved its accuracy and efficiency.

关键词： Ordinary Differential Equations First Order Initial Value Problems Nonlinear Singularities

A Three-Stage Multiderivative Explicit Runge-Kutta Method

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American Journal of Computational Mathematics 2013年第2期3卷 121-126页

作者： Ashiribo Senapon Wusu moses adebowale Akanbi Solomon Adebola Okunuga Department of Mathematics Lagos State University Lagos Nigeria Department of Mathematics University of Lagos Lagos Nigeria

In recent years, the derivation of Runge-Kutta methods with higher derivatives has been on the increase. In this paper, we present a new class of three stage Runge-Kutta method with first and second derivatives. The consistency and stability of the method is analyzed. Numerical examples with excellent results are shown to verify the accuracy of the proposed method compared with some existing methods.

关键词： Multiderivative Autonomous Rung-Kutta Stability Convergence Initial Value Problems

On the Derivation and Implementation of a Four Stage Harmonic Explicit Runge-Kutta Method

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Applied Mathematics 2015年第4期6卷 694-699页

作者： Ashiribo Senapon Wusu moses adebowale Akanbi Bakre Omolara Fatimah Department of Mathematics Lagos State University Lagos Nigeria Department of Mathematics Federal College of Education (Technical) Lagos Nigeria

In recent times, the derivation of Runge-Kutta methods based on averages other than the arithme-tic mean is on the rise. In this paper, the authors propose a new version of explicit Runge-Kutta method, by introducing ... 详细信息

关键词： Explicit Harmonic Runge-Kutta Autonomous

Solving Ordinary Differential Equations with Evolutionary Algorithms

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Open Journal of Optimization 2015年第3期4卷 69-73页

作者： Bakre Omolara Fatimah Wusu Ashiribo Senapon Akanbi moses adebowale Department of Mathematics Federal College of Education (Technical) Lagos Nigeria Department of Mathematics Lagos State University Lagos Nigeria

In this paper, the authors show that the general linear second order ordinary Differential Equation can be formulated as an optimization problem and that evolutionary algorithms for solving optimization problems can also be adapted for solving the formulated problem. The authors propose a polynomial based scheme for achieving the above objectives. The coefficients of the proposed scheme are approximated by an evolutionary algorithm known as Differential Evolution (DE). Numerical examples with good results show the accuracy of the proposed method compared with some existing methods.

关键词： Evolutionary Algorithm Differential Equations Differential Evolution Optimization

Serum Levels of Reproductive Hormones and Their Relationship with Age in Men with Benign Prostatic Hyperplasia in Benin City, Edo State

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Health 2020年第9期12卷 1121-1131页

作者： Babatunde Ishola Gabriel Adejumo Omolei Lilian Williams Efosa Bolaji Odigie Ifeoma Gloria Unachukwu Oladimeji Nasiru Abdulrahman Uchechukwu Dimkpa Simon Uzor Oyarazi Margaret adebowale Ojo moses Oke Department of Medical Laboratory Science University of Benin Benin City Nigeria Department of Medical Laboratory Science College of Health Technology Offa Nigeria Department of Human Physiology Nnamdi Azikwe University Nnewi Campus Nnewi Nigeria Department of Applied Science Faculty of Health and Applied Sciences University of West of England Bristol UK Department of Virology/Immunology Federal School of Medical Laboratory Science Jos Nigeria Department of Medical Laboratory Science College of Health Technology Akure Nigeria

Background: Benign Prostatic Hyperplasia (BPH) is a common condition which occurs as men get older. Aim: We aimed at investigating the reproductive hormone profile of men with BPH and the relationship of these hormones with age. Methods: Twenty-nine men of age > 40 years were screened for prostate symptoms. The prostate examination included digital rectal examination and measurement of serum prostate-specific antigen levels. Demographic and clinical characteristics of subjects were obtained using a structured questionnaire. The serum levels of Testosterone (Te), Luteinizing hormone (LH), Follicle stimulating hormone (FSH) and Prolactin (PRL) were measured using ELISA method. Results: Our study indicated that age and levels of prostate specific antigen (PSA), LH and FSH were significantly (p Conclusion: This study suggests that the rise in serum levels of the hypothalamic-pituitary-testicular axis hormones in BPH patients as demonstrated by the present findings may be age-related since testicular dysfunction in aging men is associated with the decrease in androgen production which may stimulate an increased production of gonadotropins by negative feedback.

关键词： Hormones Age Men Prostate Hyperplasia

Reproductive Hormone Profiles and Their Relationships with Sexual Function in Patients with Prostate Cancer after Rapid Prostatectomy in Benin City

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Advances in Sexual Medicine 2020年第4期10卷 119-130页

作者： Babatunde Ishola Gabriel Adejumo Omolei Lilian Williams Efosa Bolaji Odigie Ifeoma Gloria Unachukwu Oladimeji Nasiru Abdulrahman Uchechukwu Dimkpa Simon Uzor Oyarazi Margaret adebowale Ojo moses Oke Department of Medical Laboratory Science University of Benin Benin Nigeria Department of Medical Laboratory Science College of Health Technology Ilorin Nigeria Department of Human Physiology Nnamdi Azikwe University Nnewi Campus Awka Nigeria Department of Applied Science Faculty of Health and Applied Sciences University of West of England Bristol UK Department of Virology/Immunology Federal School of Medical Laboratory Science Jos Nigeria Department of Medical Laboratory Science College of Health Technology Akure Nigeria

There are limited studies examining the relationship between serum reproductive hormone levels and sexual functions among prostate cancer (PCa) patients after rapid prostatectomy (RP). Aim: The present study aimed at evaluating the correlation between post-operative serum levels of some male reproductive hormones of PCa patients and their sexual functions in the months following RP. A total of 20 male patients with clinically localized PCa who had undergone RP within the last 12 months prior to commencement of the study, were invited to participate. The postoperative serum levels of their luteinizing hormone (LH), follicle stimulating hormone (FSH) and total testosterone (Te) were measured. They also completed a structured health and lifestyle questionnaire to obtain information on their demographic characteristics and detailed medical history. Our data indicated normal mean levels of post-operative Te (4.34 ± 4.38 ng/ml) in the patients following RP, while the mean levels of FSH (39.24 ± 34.12 miu/ml) and LH (21.67 ± 25.73 miu/ml) were on the increase and far above normal ranges for healthy men. Data indicated a significant positive correlation between Te and frequency of sexual intercourse (r = 508;p < 0.05), libido (r = 0.429;p <

关键词： Reproductive Hormone Sexual Function Prostate Cancer Rapid Prostatectomy

The Level of CD4<sup>+</sup>T Cell Count among Reproductive Age Women Coinfected with Human Immune Virus, Hepatitis Surface Antigen and Herpes Simplex Virus in Kogi State, Nigeria

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Health 2018年第10期10卷 1449-1458页

作者： Babatunde Ishola Gabriel Adejumo Francis Enifo Oronsaye Uteno Itanyi Drisu Margaret Oyarazi adebowale Ojo moses Oke Uchechukwu Dimkpa Kingsley Ifeanyichukwu Omosor Oladimeji Nasiru Abdulrahman Esmond Nwanbunneze Ukatu Emmanuel Alaba Michael Medical Laboratory Science Department University of Benin Benin City Nigeria Department of Medical Services Federal Polytechnic Idah Nigeria Medical Laboratory Science Department Federal School of Medical Laboratory Sciences and Health Technology Jos Nigeria Medical Laboratory Science Department School of Health Sciences and Technology Akure Nigeria Physiology Department Nnewi Campus Nnamdi Azikiwe University Awka Nigeria Shalom Diagnostic Medical Laboratory Warri Nigeria Medical Laboratory Science Department College of Health Technology Offa Nigeria Gulin Pharmaceuticals Nigeria Limited Sango Ottaa Nigeria Medical Laboratory Science Department College of Health Sciences and Technology Idah Nigeria

Background: There are pockets of evidence to show the existence of co-infections of viral particles in humans. Aim: The study aimed at evaluating the CD4+ T cell count among women of reproductive age co-infected with human immune virus, hepatitis surface antigen and herpes simplex virusin Kogi state, Nigeria. Methodology: 342 females of reproductive age within the ages of 15 - 49 years participated in this study. They were recruited from various local government areas of three Senatorial districts of Kogi state. Blood samples were collected from participants and analyzed for HSV1/HSV2, HIV, HBsAg and CD4 using different scientific methods and procedures. Results: There was no significant differences in mean CD4+ T cell counts between subjects who tested positive and those who tested negative for only HSV1 (p = 0.61), HSV2 (p = 0.95), HIV (p = 0.48) and co-infection for HSV1, HSV2, HIV (0.68). In contrast, mean CD4+ T cell count was significantly higher in those who tested positive compared with those who tested negative for HBsAg alone (p = 0.03) and those co-infected with HSV1, HSV2, HBsAg (p = 0.01). Analysis of variance (ANOVA) indicated no significant differences in CD4+ T cell counts among the different classes of infections. Conclusion: This study shows no decline in the count of CD4+ T cell on the co-infections of HSV1, HSV2 and HIV, but higher significant difference in those co-infected with HSV1, HSV2 and HBsAg was recorded among the women of child bearing age in Kogi state.

关键词： HSV1/HSV2 CD4 HIV HBsAg Coinfections Women Kogi State Nigeria