Søgeresultater - Mohamed Ahmed

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Papillon-Lefevre syndrome (PLS) is an extremely rare autosomal recessive genodermatosis caused by mutations in the cathepsin C (CTSC) gene. It is characterized by palmoplantar keratoderma (PPK), periodontopathy, intracranial calcifications, and recurrent pyogenic infections. We encountered an Emirat...

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Aims: The relationship between mental illness and substance misuse is well established. Early identification through drug testing can inform more holistic management plans. This audit aims to check the compliance of the current practice on acute psychiatric wards with the Trust policy for drug scree...

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The requirements for businesses to have an effective and efficient capital structure have become critical to the health and survival of businesses today. The goal of this research is to investigate the effect of capital structure (CS) on the company’s performance (FP). The quantitative data for the...

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Improving students’ thermal comfort in university courtyards and indoor spaces promotes walkability, enhances livability, and fosters social interaction among students. This study aims to improve students’ outdoor thermal comfort in university courtyards, to reduce heat transfer to classrooms, and t...

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An efficient adaptive modeling criterion for the polymer electrolyte membrane fuel cell (PEMFC) is proposed in this paper, which can facilitate its precise simulation, design, analysis and control. In this work, a number of state-of-the-art algorithms have been adapted to optimize the complex electr...

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This study presents a new dual drug delivery system (DDDS) of poly(lactic acid) (PLA) with different morphologies (spheres and fibers). One approach for delivering Norfloxacin-Tenoxicam (NOR-TENO) drugs based on PLA microspheres was prepared by encapsulating TENO into PLA via emulsion-evaporation me...

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This paper analyzes hybrid renewable energy systems for Siwa Oasis, Egypt, utilizing real data to address challenges in this remote region. Four configurations were compared: the existing diesel-only system and three hybrid alternatives—Case 1 (PV + BESS), Case 2 (PV + T-PHS), and Case 3 (PV + Wind...

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Enhancing environmental quality is regarded as a major concern globally. Fossil fuel energy utilization and economic growth are the main sources of environmental pollution. Hence, a paradigm shift from fossil fuels to cleaner energy is proposed. Hence, the objective of this study is to examine the v...

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This study investigates the friction stir welding (FSW) of polyamide 66 (PA66) sheets using an induction-heated threaded pin tool with a stationary shoulder. A novel approach was implemented by inserting a 3 mm-thick PA66-GF30 (glass fiber-reinforced polyamide) strip within the welding zone to impro...

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A collaborative inter-laboratory study was conducted to characterise the performance of the novel 250 W External Discharge Plasma Thruster (XPT) with a channel-less Hall effect-type thruster designed to address lifetime limitations and lower-power efficiency challenges in conventional Hall effect th...

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Muneera S M Al-Saleem,1 Mohamed S Mohamed Ahmed,2 Sayed M Riyadh,2 Awatif H Alruwaili,3 Magdi E A Zaki,4 Sobhi M Gomha5 1Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia; 2Department of Chemistry, Faculty of Science...

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Introduction Globally, diabetes constitutes a major proportion of non-communicable diseases. Qatar has one of the highest prevalences of diabetes worldwide and a high proportion of people visiting non-communicable disease clinics in primary care settings have diabetes. A significant percentage of pe...

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Modern computer applications have become highly data-intensive, giving rise to an increase in data traffic between the processor and memory units. Computing-in-Memory (CiM) has shown great promise as a solution to this aptly named von Neumann bottleneck problem by enabling computation within the mem...

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<b>Background/Objectives:</b> Tooth discoloration is a common concern associated with the use of intra-canal medicaments, particularly those containing antibiotics. This study aims to evaluate the tooth discoloration potential of an experimental antibiotic paste modified with Nano Chitos...

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Abstract Background Preterm delivery is a leading cause of neonatal mortality and morbidity. History of spontaneous preterm birth is the greatest risk factor for another preterm delivery. So, every effort should be made to prevent the recurrence of preterm delivery in this vulnerable group. This stu...

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The development of functional beverages requires the use of sustainable technologies to increase both nutritional value and consumer appreciation. This study aims to investigate the effects of thermosonication, a sustainable food processing approach, on Uruset apple juice to produce a functional bev...

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Argument mining for spoken Modern Standard Arabic (MSA) remains almost untouched, largely because no sizeable, well-annotated resource exists. We fill that gap with an 80-hour, 110-debate corpus drawn from 29 countries and labelled by experts with a hybrid scheme that blends Aristotle&#x2019;s L...

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