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Enhancing Renewable Energy Integration:A Gaussian-Bare-Bones Levy Cheetah Optimization Approach to Optimal Power Flow in Electrical Networks

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Computer Modeling in Engineering & Sciences 2024年第8期140卷 1339-1370页

作者： ali S.Alghamdi mohamed A.Zohdy Saad Aldoihi Department of Electrical Engineering College of EngineeringMajmaah UniversityAl-Majmaah11952Saudi Arabia Electrical and Computer Engineering Department Oakland UniversityRochesterMI48309USA Institute of Earth and Space Science King Abdulaziz City for Science and Technology(KACST)Riyadh11442Saudi Arabia Computer Science and Systems Engineering Institute Polytechnique de ParisPalaiseau CedexFrance

In the contemporary era,the global expansion of electrical grids is propelled by various renewable energy sources(RESs).Efficient integration of stochastic RESs and optimal power flow(OPF)management are critical for network *** study introduces an innovative solution,the Gaussian Bare-Bones Levy Cheetah Optimizer(GBBLCO),addressing OPF challenges in power generation systems with stochastic *** primary objective is to minimize the total operating costs of RESs,considering four functions:overall operating costs,voltage deviation management,emissions reduction,voltage stability index(VSI)and power loss ***,a carbon tax is included in the objective function to reduce carbon *** scrutiny,using modified IEEE 30-bus and IEEE 118-bus systems,validates GBBLCO’s superior performance in achieving optimal *** results demonstrate GBBLCO’s efficacy in six optimization scenarios:total cost with valve point effects,total cost with emission and carbon tax,total cost with prohibited operating zones,active power loss optimization,voltage deviation optimization and enhancing voltage stability index(VSI).GBBLCO outperforms conventional techniques in each scenario,showcasing rapid convergence and superior solution ***,GBBLCO navigates complexities introduced by valve point effects,adapts to environmental constraints,optimizes costs while considering prohibited operating zones,minimizes active power losses,and optimizes voltage deviation by enhancing the voltage stability index(VSI)*** research significantly contributes to advancing OPF,emphasizing GBBLCO’s improved global search capabilities and ability to address challenges related to local *** emerges as a versatile and robust optimization tool for diverse challenges in power systems,offering a promising solution for the evolving needs of renewable energy-integrated power grids.

关键词： Renewable energy integration optimal power flow stochastic renewable energy sources gaussian-bare-bones levy cheetah optimizer electrical network optimization carbon tax optimization

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Ecological and biochemical analyses of the brown alga Turbinaria ornata(Turner)*** from Red Sea coast,Egypt

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Journal of Coastal Life Medicine 2016年第3期4卷 187-192页

作者： mohamed ali deyab Fatma mohamed Elnabawy Ward Department of Botany Faculty of ScienceDamietta UniversityDamiettaEgypt

Objective:To study ecological parameters and biochemical composition of brown seaweed,Turbinaria ornata(***)collected from Hurghada shores,Red Sea coast of Egypt during September,October and November,***:*** and its associated seaweeds were collected,identified and their abundances were *** of collection site was analyzed physicochemically as well as qualitative and quantitative analyses of *** was analyzed for protein,total carbohydrate,lipids,alginic acid,agar,pigments,minerals and heavy ***:The results showed that macroalgal species recorded along Hurghada shores belong to Phaeophyta,Rhodophyta and *** collection site,the moderate temperature,slight alkaline pH,low turbidity,high dissolved oxygen and valuable nutrient content of saline water exerted the massive growth of *** with maximum abundance(24%)during *** phytoplankton community was quite diverse with a maximum numbers of taxa(104.2×10^(8) cell/L)recorded during *** of *** alga powder showed that high soluble carbohydrate(2.80±0.10 mg/g dry/weight)and chlorophyll c(0.0017±0.0001 mg/g fresh weight)contents were recorded during September;while high contents of protein(37.70±0.60 mg/g dry weight),lipids(3.10±0.06 mg/g dry weight),polysaccharides(agar and alginates),carotenoids(0.0160±0.0004 mg/g fresh weight),minerals and heavy metals were recorded during ***:The study revealed that physicochemical analyses of water were varied slightly during the three months and suitable for the growth of *** contains high amount of most biochemical constituents during October.

关键词： Turbinaria ornata Heavy metals Macroalgae Phaeophyta Phytochemical composition Red Sea

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Algal massive growth in relation to water quality and salinity at Damietta,north of Egypt

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Journal of Coastal Life Medicine 2015年第2期 113-121页

作者： mohamed ali Ibraheem deyab Taha mohamed El-Katony Botany Department Faculty of ScienceDamietta UniversityNew Damietta CityEgypt

Objective:To relate the proliferation and dominance of certain algal species at the Damietta and its relation to water ***:Water and algal biomass were bimonthly sampled from five selected sites at Damietta Province,Egypt during *** were identified and ***,algae and sediment were ***:The physicochemical properties of water showed limited seasonal but substantial local *** high levels of nitrogen and phosphorus and turbidity of water pointed to marked eutrophication,which could enhance massive algal *** temporal fluctuation in temperature,exposure to industrial and domestic sewage and salinity results in succession between blooming algal *** platensis and Chlorella vulgaris alternated in a moderately saline water and Oscillatoria agardhii and Mougeotia scalaris in a fresh water body during summer and winter ***,Microcystis aureginosa and Ulva lactuca alternated in a moderately saline site during autumn and summer *** albida dominated a fish pond of brackish water and Dunaliella salina dominated the most saline water over the whole period of ***:Growth of the predominant algal species is correlated to water *** species are of considerable nutritive value,with moderate contents of protein,carbohydrate,macronutrients and micronutrients,which evaluates them for usage as food(green and macroalgae),fodder or bio-fertilizer(cyanophytes).

关键词： Algal growth Water quality Sediment North Damietta Egypt Waste water treatment Algal succession

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Evaluation of antibacterial activity of the brown Seaweed Turbinaria ornata(Turner)*** from Egypt

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Journal of Coastal Life Medicine 2016年第8期4卷 603-607页

作者： Fatma mohamed Elnabawy Ward mohamed ali deyab Botany and Microbiology Department Faculty of ScienceDamietta UniversityDamiettaEgypt

Objective:To investigate the potential antibacterial activities of ethanol extracts of Turbinaria ornata(***),Oleic acid(OA)and palmitic acid(PA)extracted from *** as well as mixtures of OA and PA(1:1)against some bacterial ***:Brown seaweed *** was collected from Hurghada shores,Red Sea coast of *** and PA were extracted from *** extracts of ***,OA,PA and mixtures of these two fatty acids(1:1)were tested for their antibacterial activities against Escherichia coli,Bacillus cereus,Bacillus subtilis,Klebsiella pneumonia and Staphylococcus aureus by the disc diffusion ***:Ethanol extracts of ***,OA,PA and mixtures of OA and PA(1:1)showed antibacterial activities that increased significantly(least significant difference at 0.05 level)with increasing concentrations against all tested *** concentrations of ethanol extracts of *** and extracted OA showed its highest activity against Bacillus subtilis,while PA and mixtures of PA and OA(1:1)showed its highest activity against Bacillus *** maximum inhibition activities were shown for mixtures of OA and PA(1:1).Scanning electron microscope showed that mixtures of OA and PA(1:1)caused plasmolysis and reduction in cell size of Escherichia ***:Different concentrations of *** and its fatty acids showed activities against all tested ***,it is a potential source of natural antimicrobial compounds.

关键词： Turbinaria ornata Bacteria Seaweeds Disc diffusion method Fatty acids Phaeophyta

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Model Predictive Current Control for Low-Cost Shunt Active Power Filter

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1589-1598页

作者： ali A.Abdel-Aziz mohamed A.Elgenedy Barry W.Williams the Electronic and Electrical Engineering Department Strathclyde UniversityGlasgowG11XQUK School of Computing Engineering and the Built Environment(SCEBE)Glasgow Caledonian UniversityGlasgowG40BAUK

Performance of a three-phase shunt active power filter(SAPF)relies on the capability of the controller to track the reference ***,designing an accurate current controller is crucial to guarantee satisfactory SAPF *** paper presents a model predictive current controller(MPCC)for a low-cost,four-switch,shunt active power filter for power quality improvement.A four-switch,B4,converter topology is adopted as an SAPF,hence offering a simple,robust,and low-cost *** addition,to further reduce overall cost,only two interfacing filter inductors,instead of three,are used to eliminate switching current *** proposed SAPF model MPCC is detailed for implementation,where simulation and experimental results validate effectiveness of the proposed control algorithm showing a 20%improvement in total harmonic distortion compared with a conventional hysteresis band current controller.

关键词： Four-switch converter harmonic distortion model predictive current control power quality shunt active power filter

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Primary gastroduodenal tuberculosis presenting as gastric outlet obstruction:A case report and review of literature

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World Journal of Clinical Cases 2024年第8期12卷 1536-1543页

作者： Abdihamid mohamed ali Yahye Garad mohamed Abdirahman Ahmed Mohamud Abdulkadir Nor mohamed mohamed Rage Ahmed Ismail Mohamud Abdullahi Tuba Saydam Department of General Surgery Mogadishu Somali Turkey Recep Tayyip Erdogan Training and Research HospitalMogadishu 2526Somalia Department of Radiology Mogadishu Somali TurkeyTraining and Research HospitalMogadishu 2526Somalia Department of Pathology Mogadishu Somali Turkey Recep Tayyip Erdogan Training and Research HospitalMogadishu 2526Somalia

BACKGROUND Mycobacterium tuberculosis(TB)is the causative agent of TB,a chronic granulo-matous *** disease is prevalent in low-income countries,posing a significant global health *** TB is one of the three *** disease can mimic other intra-abdominal conditions,leading to delayed diagnosis owing to the absence of specific *** gastric outlet obs-truction(GOO)remains a frequent complication,its incidence has declined with the advent of proton pump inhibitors and Helicobacter pylori eradication *** TB can cause upper gastrointestinal hemorrhage,obstruction,and malignancy-like *** SUMMARY A 23-year-old male presented with recurrent epigastric pain,distension,nausea,vomiting,and weight loss,prompting a referral to a gastroenterologist *** examination revealed distorted gastric mucosa and signs of chronic ***,treatment was interrupted,possibly owing to vomiting or comorbidities such as human immunodeficiency virus infection or *** surgical intervention revealed a dilated stomach and diffuse thickening of the duodenal *** revealed gastric wall effacement with *** Primary gastric TB is rare,frequently leading to *** its rarity,suspicions should be promptly raised when encountering relevant symptoms,often requiring surgical intervention for diagnosis and treatment.

关键词： Tuberculosis Gastrointestinal tuberculosis Gastric outlet obstruction Gastroduodenal tuberculosis Case report

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Designing single atom catalysts for exceptional electrochemical CO_(2) reduction

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Chinese Journal of Structural Chemistry 2024年第1期43卷 3-5页

作者： Muhammad Humayun mohamed Bououdina Abbas Khan Sajjad ali Chundong Wang Energy Water and Environment LabCollege of Humanities and SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia School of Integrated Circuits Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan430074PR China Department of Chemistry Abdul Wali Khan University MardanMardan23200Pakistan

The release of anthropogenic CO_(2)emissions into the atmosphere has significantly accelerated global warming within the past few *** to the latest data,it is predicted that the concentration of CO_(2)will rise to 800 ppm over this century,and could reach 2000 ppm by *** high level of CO_(2)is expected to result in significant increase in global temperature as well as ocean acidification[1].

关键词： exceptional global release

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Numerical Analysis of Bacterial Meningitis Stochastic Delayed Epidemic Model through Computational Methods

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 311-329页

作者： Umar Shafique mohamed Mahyoub Al-Shamiri ali Raza Emad Fadhal Muhammad Rafiq Nauman Ahmed Department of Mathematics National College of Business Administration and EconomicsLahore54660Pakistan Department of Mathematics Applied CollegeMahayl AssirKing Khalid UniversityAbha62529Saudi Arabia Department of Physical Sciences The University of ChenabGujrat50700Pakistan Department of Mathematics&Statistics College of ScienceKing Faisal UniversityP.O.Box 400Al-Ahsa31982Saudi Arabia Department of Computer Science and Mathematics Lebanese American UniversityBeirut1102-2801Lebanon Department of Mathematics Faculty of Science and TechnologyUniversity of Central PunjabLahore54000Pakistan Department of Mathematics and Statistics University of LahoreLahore54000Pakistan

Based on theWorld Health Organization(WHO),Meningitis is a severe infection of the meninges,the membranes covering the brain and spinal *** is a devastating disease and remains a significant public health *** study investigates a bacterial meningitis model through deterministic and stochastic ***-compartment population dynamics explain the concept,particularly the susceptible population,carrier,infected,and *** model predicts the nonnegative equilibrium points and reproduction number,i.e.,the Meningitis-Free Equilibrium(MFE),and Meningitis-Existing Equilibrium(MEE).For the stochastic version of the existing deterministicmodel,the twomethodologies studied are transition probabilities and non-parametric ***,positivity,boundedness,extinction,and disease persistence are studiedrigorouslywiththe helpofwell-known *** and nonstandard techniques such as EulerMaruyama,stochastic Euler,stochastic Runge Kutta,and stochastic nonstandard finite difference in the sense of delay have been presented for computational analysis of the stochastic ***,standard methods fail to restore the biological properties of the model,so the stochastic nonstandard finite difference approximation is offered as an efficient,low-cost,and independent of time step *** addition,the convergence,local,and global stability around the equilibria of the nonstandard computational method is studied by assuming the perturbation effect is *** simulations and comparison of the methods are presented to support the theoretical results and for the best visualization of results.

关键词： BacterialMeningitis disease stochastic delayed model stability analysis extinction and persistence computational methods

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Temporal variation in chemical composition of Dictyota dichotoma (Hudson) J.V. Lamouroux (Dictyotales,Phaeophyceae) from Red Sea Coast, Egypt

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Journal of Coastal Life Medicine 2017年第4期5卷 149-155页

作者： mohamed ali deyab Taha mohamed El-Katony Magda Faiz El-Adl Fatma mohamed Ward Department of Botany and Microbiology Faculty of ScienceDamietta UniversityNew DamiettaEgypt

Objective: To relate the chemical composition of Dictyota dichotoma (Hudson) *** (D. dichotoma) to variation of water characteristics at Hurghada, ***: Sea water and D. dichotoma fronds were collected from Hurghada shores, during autumn of 2014. Water samples were analyzed and fronds of D. dichotoma were biochemically ***: Sea water was characterized with high levels of salinity, P and heavy metals but with low content of nitrogen. The confined nature and the high evaporation of the Red sea contribute to the high salinity while the mining and transportation of phosphatic ore in the nearby region contribute to the high load of P and heavy metals. With the progress of season from September to November, water temperature was markedly reduced whereas pH and ionic content of water was reduced to a lesser extent, with marked alteration in ionic composition. With the progress of season towards winter, there was marked reduction in mineral composition of the fronds, shift in frond composition in favor of carbohydrates at the expense of proteins, lipids and alginates;and shift in the pigment composition in favor of chlorophylls at the expense of carotenoids and ***: These facts point to active growth and photosynthetic activity during the cold period;that is, D. dichotoma is a cold water alga. D. dichotoma had moderate nutritive value, with moderate contents of carbohydrates, proteins, lipids and minerals. The mineral accumulation capacity of the fronds was more evident for N, P and K than for Ca, Mg and heavy metals.

关键词： Alginates Minerals Pigments Red sea

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Investigating and predicting the role of photovoltaic, wind, and hydrogen energies in sustainable global energy evolution

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Global Energy Interconnection 2024年第4期7卷 429-445页

作者： Mahmood Swadi Dheyaa Jasim Kadhim mohamed Salem Firas Mohammed Tuaimah Ammar SabriMajeed ali Jawad Alrubaie Department of Electrical Engineering College of EngineeringUniversity of BaghdadBaghdad 10001Iraq Libyan Authority for Scientific Research Tripoli 80045Libya School of Electrical and Electronic Engineering Universiti Sains Malaysia(USM)Nibong Tebal 14300PenangMalaysia Continuing Education Center University of BaghdadBaghdad 10001Iraq Al-Furat Al-Awsat Technical University AL-Mussaib Technical CollegeBabylonIraq

The global shift toward next-generation energy systems is propelled by the urgent need to combat climate change and the dwindling supply of fossil *** review explores the intricate challenges and opportunities for transitioning to sustainable renewable energy sources such as solar,wind,and *** transition economically challenges traditional energy sectors while fostering new industries,promoting job growth,and sustainable economic *** transition to renewable energy demands social equity,ensuring universal access to affordable energy,and considering community *** environmental benefits include a significant reduction in greenhouse gas emissions and a lesser ecological *** study highlights the rapid growth of the global wind power market,which is projected to increase from$112.23 billion in 2022 to$278.43 billion by 2030,with a compound annual growth rate of 13.67%.In addition,the demand for hydrogen is expected to increase,significantly impacting the market with potential cost reductions and making it a critical renewable energy source owing to its affordability and zero *** 2028,renewables are predicted to account for 42%of global electricity generation,with significant contributions from wind and solar photovoltaic(PV)technology,particularly in China,the European Union,the United States,and *** developments signify a global commitment to diversifying energy sources,reducing emissions,and moving toward cleaner and more sustainable energy *** review offers stakeholders the insights required to smoothly transition to sustainable energy,setting the stage for a resilient future.

关键词： Next energy Renewable energy Sustainability Environmental benefits Economic opportunities

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