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Two Parameters Analytical Solution for the Stellar Density in Globular Clusters

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A Series Solution Approach to the Circular Restricted Gravitational Three-Body Dynamical Problem

International Journal of Astronomy and Astrophysics（天文学与天体物理学国际期刊） 2012年第1期

作者： Mohamed A. Sharaf Amr A. Sharaf aisha abdu hussien alshaery

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Journal of Applied Mathematics and Physics 2020年第12期8卷 2703-2712页

作者： Maha Hamed Alghamdi aisha abdu alshaery Department of Mathematics Faculty of Science University of Jeddah Jeddah KSA

The present manuscript examines the circular restricted gravitational three-body problem (CRGTBP) by the introduction of a new approach through the power series method. In addition, certain computational algorithms with the aid of Mathematica software are specifically designed for the problem. The algorithms or rather mathematical modules are established to determine the velocity and position of the third body’s motion. In fact, the modules led to accurate results and thus proved the new approach to be efficient.

关键词： n-Body Problems Restricted Gravitational Problems Power Series Method Series Solution Approach

Electron-Positron Pair Production in Electro-Magnetic Field

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Journal of Applied Mathematics and Physics 2022年第2期10卷 237-244页

作者： Sadah A. Alkhateeb aisha abdu alshaery Rawan Ali Aldosary Mathematics Department Faculty of Science University of Jeddah Jeddah Saudi Arabia

At very high energies, pair production formation (γ + N → e+e-) exhibits a variety of intriguing properties. Analytically and quantitatively, the formation of Electron-Positron pairs in the Electro-Magnetic field of light nuclei has been calculated. In Ultra-Relativistic (UR) areas of incident photon energy, applying the resulting formulas to the energy distribution of the (e-, e+) operation. When we compare the results, we can observe that the Magnetic field of the target nucleus is more efficacious than the Electric field of the nucleus in the (e-, e+) operation. Furthermore, we can show that in Pair Production operation, the Differential Cross Section (DCS) owing to the target nucleus’s Electric Quadrupole (EQ) and Magnetic Octupole (MO) are bigger than the Differential Cross Section (DCS) attributable to the target nucleus’s Electric Charge (EC) distribution and Magnetic Dipole (MD).

关键词： Pair Production Positron Differential Cross Section The Bethe-Hitler Equation

Two Unified Algorithms for Fundamental Planetary Ephemeris

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International Journal of Astronomy and Astrophysics 2014年第4期4卷 598-606页

作者： Mohamed Adel Sharaf Abdel-Naby Saad Saad aisha abdu alshaery Department of Astronomy Faculty of Science King Abdulaziz University Jeddah KSA Department of Astronomy National Research Institute of Astronomy and Geophysics Cairo Egypt Department of Mathematics Preparatory Year Qassim University Buraidah KSA Department of Mathematics College of Science for Girls King Abdulaziz University Jeddah KSA

In the present paper, we established two unified algorithms. The first algorithm is for the transformations between J2000.0 Keplerian orbital elements and B1950.0 elements, while the second is for the transformations between the equatorial orbital elements and the ecliptic orbital elements. Mathematica Modules of the algorithms are given together with some numerical applications.

关键词： Spherical Astronomy Precession Ephemeris Orbit Determination

Restricted Three-Body Problem in Cylindrical Coordinates System

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Applied Mathematics 2012年第8期3卷 907-909页

作者： Mohammed Sharaf aisha alshaery Department of Astronomy Faculty of Science King Abdul Aziz University Jeddah Saudi Arabia Department of Mathematics Faculty of Science King Abdul Aziz University Jeddah Saudi Arabia

In this paper, the equations of motion for spatial restricted circular three body problem will be established using the cylindrical coordinates. Initial value procedure that can be used to compute both the cylindrical... 详细信息

关键词： Spatial Restricted Circular Three Body Problem Regularization

Restricted Three-Body Problem in Different Coordinate Systems

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Applied Mathematics 2012年第9期3卷 949-953页

作者： Mohammed A. Sharaf aisha A. alshaery Department of Astronomy Faculty of Science King Abdulaziz University Jeddah KSA Department of Mathematics Faculty of Science King Abdulaziz University Jeddah KSA

In this paper of the series, the equations of motion for the spatial circular restricted three-body problem in sidereal spherical coordinates system were established. Initial value procedure that can be used to compute both the spherical and Cartesian sidereal coordinates and velocities was also developed. The application of the procedure was illustrated by numerical example and graphical representations of the variations of the two sidereal coordinate systems.

关键词： Spatial Restricted Circular Three Body Problem Regularization Coordinate Transformations

Caring psychiatric patients and its impact on nurses’behavior:a cross-sectional quantitative method study in Saudi Arabia

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Nursing Communications 2023年第14期7卷 1-7页

作者： Faten Mohammed Islam Khotany Najla Eid Alharbi Ghadeer Hassan Mahdi Moodhi Neda Basher Alazimi Hajer Marei Mahammed Rabaiy aisha Ayesh Alotaibi Nawar Aqeel Alrashidi Marwah Suliman Aljohani Fatimah Ahmed Alhazemi Ghazaile Jameel Khayat Samirah Ali Kaddaf Laila hussien Hakami Saeed Atiah Almalki abdulaziz Mohammad Islam Khotani Feryal Mohammad Islam Kotany Mofreh Alsahil Alruwaili Makkah Health Cluster Makkah regionAl Hamra street 7853Saudi Arabia Deputy of Nursing supervisor Aljamoum Health SectorMakkahSaudi Arabia Sabya General Hospital South regionJazanSaudi Arabia Community Health Nursing Primary Health CareAlqaseemUnizahSaudi Arabia Department of Nursing Jeddah King Abdullah Medical ComplexWestern regionSaudi Arabia Nursing supervisor of PHCs in Aljamoum Health Sector MakkahSaudi Arabia Department of Nursing Khafji General HospitalEastern regionSaudi Arabia Department of Nursing Forensic MedicineWestern regionMadinahSaudi Arabia South region-Jazan Dental Centre JazanSaudi Arabia King Fahad Hospital MakkahSaudi Arabia Department of Nursing Primary Care Health Center in Al RashidiyaWestern regionMakkahSaudi Arabia OBGYNE and Paediatric supervisor at Jazan General Hospital Jizan citySaudi Arabia Erada and Mental Health Complex TaifMecca regionSaudi Arabia Makkah Health Cluster MHCSaudi Arabia Makkah Health Cluster PHCSaudi Arabia Ministry of Health/Aljouf Health Affairs Sakaka AljoufQara-Alsalam 5108Saudi Arabia.

Objective:The present study aimed to address the care of psychiatric patients and its impact on nurses’behavior in Saudi ***:A cross-sectional quantitative questionnaire-based study was *** study was carried out in various government hospitals across different regions of Saudi ***:A total of 73 nurses participated in the study,with male nurses comprising the majority(61.6%)compared to *** a young nurse or with few years of work experience is linked with more predilection towards preventive behaviour and/or physical activity.A significant mean difference was observed,indicating higher scores for preventive behavior among females(female 14.93±5.82 *** 11.56±5.48,P=0.015).The Bonferroni post hoc multiple comparisons did not reveal any statistical significance for single ***(P=0.618),single ***(P=0.223),and married ***(P=0.020).Conclusion:The study results demonstrated a significant impact of caring for psychiatric patients on nurses’*** is concerning because psychological and mental health strain has been shown to contribute to unhealthy lifestyle habits,such as physical inactivity and sleep deprivation,which,in turn,can contribute to the increasing incidence and prevalence of chronic *** interventions targeting psychiatric and mental health nurses should be designed and examined to emphasize the importance of healthy lifestyle choices and an active lifestyle.

关键词： nurses psychiatric patients behaviour Saudi Arabia