الإصدار السابع عشر

الإصدار السابع عشر من المجلة العلمية لنشر البحوث 

تم نشر الإصدار السابع عشر من المجلة العمية لنشر البحوث  في: 1-6-2023م. يحتوي الإصدار على بعض الأبحاث في مختلف التخصصات، كما أن الإصدار قد تناول العديد من المشاكل البحثية المهمه التي تشكل أهمية وفائدة كبيرة للمجتمع العلمي والمعرفي. جميع الأبحاث متاحة للتحميل والتعقيب والاستشهاد المرجعي لكافة الباحثين والأكاديميين.

الأبحاث والأوراق العلمية:

مقومات الإبداع الإداري لدى القيادات الأكاديمية

الاسم: فاطمه علي محسن واصلي
الايميل:Yagot1223@gmail.com

الملخص 

يهدف البحث إلى التعرف على مقومات الإبداع الإداري لدى القيادات الأكاديمية، ولتحقيق أهداف البحث تم استخدام المنهج الوصفي، وذلك من خلال إعداد استبانة وتوزيعها على عينة البحث وهم القيادات الأكاديمية بالجامعات بالمملكة العربية السعودية، وأظهرت نتائج الدراسة ما يلي: 1- وجود علاقة ذات دلالة إحصائية بين مقومات الإبداع الإداري والقيادات الأكاديمية عند مستوى دلالة (0.05)، مما يشير إلى أهمية مقومات الإبداع الإداري في رفع الكفاءة لدى القيادات الأكاديمية بالجامعات.  2- وجود دلالة إحصائية بين المتغيرات الديموغرافية (الجنس – المسمى الوظيفي – سنوات الخبرة) ومقومات الإبداع الإداري عند مستوى دلالة (0.05).

الكلمات المفتاحية: معوقات الإبداع الإداري – القيادات الأكاديمية

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Distribution of Blood Groups ABO and Rh Among Covid-19 Patients in Saudi

Name: MOHAMMED SAEED ALGHAMD

Name: Rashid saeed Alghamdi

Name:Ahmad Khalaf Saeed Alzhrani

Name: Bayan Mohammed Khider

Abstract

This research was conducted to better understand the ABO blood typing system. To better manage and treat diseases, researchers in Saudi Arabia performed case-control studies to examine the correlation between different blood groups and COVID-19.This research For a total of 10,000 patients, we looked into how ABO and Rh blood groups correlated with COVID-19 vulnerability. Participants were collected over the course of two years from all COVID-19 Examination Centers and Hospitals in the Saudi Arabian Province. Patients who met the inclusion and exclusion criteria were enrolled between January 2, 2020 and January 4, 2022. This study looked at numerous potential risk factors for dying from a COVID-19 infection in the Western Province of Saudi Arabia during the early phases of the pandemic. Those in our sample who reported experiencing COVID-19-related symptoms—including high body temperature, coughing, pneumonia, and respiratory distress syndrome—had a much increased risk of dying. The majority of people complained about these signs. The presence of preexisting renal or cardiovascular disease also worsened the prognosis of a COVID-19 infection and was associated with a greater mortality rate. These results highlight the need for early diagnosis and supportive treatment for patients with COVID-19 infection. Our study population had much higher frequencies of O+, A+, and B+ than the general population, however there was no correlation between the distribution of blood groups and an increased risk of death from COVID-19. Despite the fact that certain blood groups were much more common, this was the case. Thus, larger-scale studies are needed to examine the correlations between blood types and the severity of COVID-19 infection.

Keywords : Distribution of Blood Groups, Blood Groups ABO and Rh, Covid-19 Patients in Saudi.

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Name : Samia E. Attia Negm

Department of Physics , Faculty of Science , Al-Azhar Univ . , Nasr City 11884, Cairo , Egypt , Girls Branch b

Department of General Science – Physics Division, Ibn Sina National College for Medical Studies, P.O. Box No. 31906, Jeddah, 21418, Saudi Arabia

 

“The Influence of Cu on the Thermal and Mechanical Properties and Microstructure of lead-free Sn–5Sb solder Alloy”

 : Abstract

Here, we looked at how a lead-free Sn-Sb5 solder alloy’s mechanical and thermal properties changed when Cu was added . Samples were subjected to differential thermal analysis (DTA) to determine their specific heat. The contact angle on different smooth-surfaced substrates (glass, pure Al, pure Cu, and CuZn30 alloy) was used to test the wettability of the molten alloys that were created. At 550K, with colophonic acid as the flux, the contact angles were photographed. The effective activation energy of Sn-Sb and Sn-Sb-Cu solder alloys was determined by conducting microhardness tests as a function of temperature. Using a constant temperature of 480 K and a pre-threshold temperature (Tm/2) for annealing, the isothermal creep curves of the alloy samples were obtained . Cold working and creep testing affect the structural changes and characteristics of Sn-Sb and Sn-Sb-Cu alloys. The effects of these treatments on the microstructure of the as-cast alloys are detailed in this study


. Keywords : Annealing temperature, Lead-Free Solder Alloy, Creep, Micro-Hardness Wetting

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