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2025

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Improving Load Capacity Of Steel Beams With Corrugated Webs Using Stiffening Plates, Aya Fouda, Mohamed Dabaon, Saad Eldeen Mostafa Abdrabou, Mohamed Ghannam Jan 2025

Improving Load Capacity Of Steel Beams With Corrugated Webs Using Stiffening Plates, Aya Fouda, Mohamed Dabaon, Saad Eldeen Mostafa Abdrabou, Mohamed Ghannam

Mansoura Engineering Journal

In the last decades, Steel Beams with Corrugated Webs (SBCWs), especially those with trapezoidal profiles, are extensively employed in structural applications owing to their superior strength-to-weight ratio and improved structural stability under various loading conditions. While the behavior of SBCWs has been widely investigated, comparatively fewer studies have explored approaches aimed at improving their structural performance through strengthening techniques. This study presents numerical investigation into the capacity enhancement of SBCWs through the application of horizontal stiffeners and reinforcing plates. The numerical results were validated against existing experimental and computational data from previous research. The finite element method was employed to …

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Optimum Design Of Three-Phase Wound Rotor Induction Machine Using Giant Trevally Optimizer Technique, D. El-Hassanein, Abd Al Rahman Amin, Eid Gouda, Mohamed F. Kotb Jan 2025

Optimum Design Of Three-Phase Wound Rotor Induction Machine Using Giant Trevally Optimizer Technique, D. El-Hassanein, Abd Al Rahman Amin, Eid Gouda, Mohamed F. Kotb

Mansoura Engineering Journal

Conventional sizing methods for electric machines often result in large dimensions, excessive weight, even when following correct design principles. In this paper promising Giant Trevally Optimizer “GTO” is employed as a swarm intelligence-based optimization algorithm inspired by the social behavior of giant trevally, to design a three-phase wound rotor induction machine “3WRIM”. The optimization process targets four key objectives: maximizing efficiency , and minimizing weight per kilowatt “ ”, temperature rise , and the no-load current to phase current ratio . These objectives are optimized both simultaneously and individually while adhering to a set of practical design constraints. To validate …

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Optimization Of Persulfate Activation System Using Ferrous Sulfate For Toc Removal From Real Domestic Wastewater, Mohamed Fouad, Mohamed Mossad, Mohamed Gar Alalm, Mahmoud Samy Jan 2025

Optimization Of Persulfate Activation System Using Ferrous Sulfate For Toc Removal From Real Domestic Wastewater, Mohamed Fouad, Mohamed Mossad, Mohamed Gar Alalm, Mahmoud Samy

Mansoura Engineering Journal

The reuse of treated wastewater is increasingly recognized as a sustainable solution to address global water shortage. This study investigates the effectiveness of a persulfate-based advanced oxidation process (AOP) using sodium persulfate (Na2S2O8) activated by ferrous sulfate (FeSO4) as a tertiary treatment for secondary effluents. Real municipal wastewater was collected from Agouzain Wastewater Treatment Plant (WWTP) in Kafr El-Sheikh, Egypt. A Box Benkhen design (BBD) was employed to optimize three key variables: FeSO4 dose (0.5–2.0 g/L), Na2S2O8 dose (0.5–2.0 g/L), and pH (3.0–9.0), with total organic carbon (TOC) removal as the main response. Under optimized conditions (0.50 g/L FeSO4, 2.00 …

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The Thermal Behavior Of Building Materials Using Phase Change Materials (Pcms) To Enhance Energy Efficiency, Rowan Mohamed Kamal Mansour Jan 2025

The Thermal Behavior Of Building Materials Using Phase Change Materials (Pcms) To Enhance Energy Efficiency, Rowan Mohamed Kamal Mansour

Mansoura Engineering Journal

Improving global energy efficiency necessitates the development of energy-efficient buildings (EEBs). One emerging method involves integrating phase change materials (PCMs) into building structures. This study evaluates the thermal performance of walls coated with Nano-enhanced PCM powder compared to conventional walls under the climatic conditions of Damietta, Egypt. Experimental and simulation results indicate a reduction in indoor wall temperature from 30.1 °C (without PCM coating) to 28.8 °C (with PCM coating), highlighting the energy-saving potential of PCM-enhanced coatings. The study provides detailed information about material selection, experimental setup, thermal simulations, and results over short-term and long-term periods.

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Fear: A Novel Framework For Representing Digital Forensic Artifacts In Knowledge Graphs, Allan Korol, Leslie F. Sikos Jan 2025

Fear: A Novel Framework For Representing Digital Forensic Artifacts In Knowledge Graphs, Allan Korol, Leslie F. Sikos

Research outputs 2022 to 2026

In digital forensics, knowledge graphs have demonstrated significant potential via software agent automation and knowledge discovery using encoded expert knowledge in, for example, the form of Semantic Web rules. These advancements have been limited in terms of efficiently encoding extracted digital artifacts into graph representation, the associated overhead of implementing frameworks to handle digital forensic evidence, and the lack of sharing of such code that is often a preamble to other research. This paper introduces a digital forensic framework, Forensic Extraction and Representation (FEAR), that enables a simplified process of accessing and encoding extracted digital forensic artifacts in semantic knowledge …

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A Power Dependence Model Of The Impact Of Leader Impostorism On Supervisor Support And Undermining: The Moderating Role Of Power Distance, Xueqi Wen, Zihan Liu, Feng Qiu, Keith Leavitt, Xingyu Wang, Ziyang Tang Jan 2025

A Power Dependence Model Of The Impact Of Leader Impostorism On Supervisor Support And Undermining: The Moderating Role Of Power Distance, Xueqi Wen, Zihan Liu, Feng Qiu, Keith Leavitt, Xingyu Wang, Ziyang Tang

Research Collection Lee Kong Chian School Of Business

Leaders, often perceived as possessing exceptional confidence and competence, are not immune to feelings of self-doubt. Leader impostorism describes the experience that one’s attributes, experiences, skills, and abilities fall short of the standards expected in the leadership role, resulting in a sense of deception in fulfilling leadership responsibilities. While existing research has examined the antecedents and individual outcomes of leader impostorism, its implications for leaders’ treatment of subordinates remain largely unexplored. In this research, we investigate the downstream consequences of leader impostorism on behaviors directed toward subordinates. Integrating research on leader impostorism with power dependence theory, we propose that for …

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Validation Of Salivary Proteomic Biomarkers For Early Detection Of Oral Cancer In The Egyptian Population, Dalia Ghalwash, Ahmed M. Ammar, Ayman El-Gawish Jan 2025

Validation Of Salivary Proteomic Biomarkers For Early Detection Of Oral Cancer In The Egyptian Population, Dalia Ghalwash, Ahmed M. Ammar, Ayman El-Gawish

Dentistry

Purpose: The present study evaluated the sensitivity and specificity of important proteomic salivary biomarkers; IL-6, IL-8, and sCD44 in the early detection of oral cancer, and any poss associations with risk factors of oral cancer in an Egyptian population Methods: The present investigation was conducted on 100 individuals; 25 healthy controls, 25 patients having oral potentially malignant disorders (OPMDs) with dysplasia; 25 patients having OPMDs without dysplasia, and 25 oral cancer patients. Demographic data modified gingival index, oral hygiene level, and salivary levels of the biomarkers were assessed. Results: Salivary levels of IL-6, IL-8, and sCD44 progressively increased with increased …

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