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review of Artificial Neural Networks for Wind Turbine Fatigue Prediction

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structural Durability & Health Monitoring 2024年第6期18卷 707-737页

作者： Husam Alshannaq aly Mousaad aly Windstorm Impact Science and Engineering(WISE)Research LabLouisiana State UniversityBaton RougeLA 70803USA

Wind turbines have emerged as a prominent renewable energy source *** monitoring and detection methods are crucial to enhance their operational effectiveness,particularly in identifying fatigue-related *** review focuses on leveraging artificial neural networks(ANNs)for wind turbine monitoring and fatigue detection,aiming to provide a valuable reference for researchers in this domain and related *** various ANN techniques,including General regression Neural Network(GrNN),support Vector Machine(sVM),Cuckoo search Neural Network(CsNN),Backpropagation Neural Network(BPNN),Particle swarm Optimization Artificial Neural Network(PsO-ANN),Convolutional Neural Network(CNN),and nonlinear autoregressive networks with exogenous inputs(NArX),we investigate the impact of average wind speed on stress transfer function and fatigue damage in wind turbine *** findings indicate significant precision levels exhibited by GrNN and sVM,making them suitable for practical *** demonstrates superiority over BPNN and PsO-ANN in predicting blade fatigue life,showcasing enhanced accuracy,computational speed,precision,and convergence rate towards the global ***,CNN and NArX models display exceptional accuracy in classification *** results underscore the potential of ANNs in addressing challenges in wind turbine monitoring and fatigue ***,it’s important to acknowledge limitations such as data availability and model *** research should explore integrating real-time data and advanced optimization techniques to improve prediction accuracy and applicability in real-world *** summary,this review contributes to advancing the understanding of ANNs’efficacy in wind turbine monitoring and fatigue detection,offering insights and methodologies that can inform future research and practical applications in renewable energy systems.

关键词： Wind turbine fatigue prediction artificial neural network

Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet

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Chinese Physics B 2024年第2期33卷 108-114页

作者： U.s.Mahabaleshwar G.P.Vanitha L.M.Pérez Emad H.aly I.Pop Department of studies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in H_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resultant nonlinear system of partial differential equations is converted into a system of ordinary differential equations using the suitable similarity *** transformed differential equations are solved *** of the magnetic parameter,solid volume fraction and stretching/shrinking parameter on momentum and temperature distribution have been analyzed and interpreted *** skin friction and Nusselt number were also *** addition,existence of dual solution was deduced for the shrinking sheet and unique solution for the stretching ***,Al_(2)O_(3)/H_(2)O nanofluid flow has better thermal conductivity on comparing with Cu/H_(2)O ***,it was found that the first solutions of the stream are stable and physically realizable,whereas those of the second ones are unstable.

关键词： magnetohydrodynamic nanofluid stretching/shrinking sheet axisymmetric flow analytical solution suction/injection

Assessment of groundwater suitability for different activities in Toshka district,south Egypt

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Journal of Groundwater science and Engineering 2024年第1期12卷 34-48页

作者： Marwa M aly shymaa AK Fayad Ahmed MI Abd Elhamid Faculty of Engineering Mataria Helwan UniversityCairo 11718Egypt Division of Engineering International Academy for Engineering and Media Science(IAEMS)6th of October City 15515Egypt Hydraulics research Institute National Water Research CenterMWRICairo 13621Egypt

Globally,groundwater has globally emerged as a crucial freshwater source for domestic,irrigation,and industrial *** evaluation of groundwater quality in the Toshka region is imperative to ensure its suitability for the extensive agricultural and industrial activities underway in this promising,groundwater-dependent development *** is particularly significant as Egypt increasingly relies on groundwater reserves to address freshwater deficits and to implement mega-development projects in barren *** this study,fifty-two samples were collected from the recently drilled wells tapping into the Nubian sandstone Aquifer(NsA)in the Toshka *** quality was assessed through hydrochemical analysis,Piper diagram,and various indicators such as Na%,sAr,rsC,Kr,MH and *** hydrochemical analysis revealed improved groundwater quality characteristics,attributed to continuous recharge from Lake *** Piper diagram categorised most of the water samples as"secondary salinity"water *** all wells proved suitable for irrigation with only two wells unsuitable based on MH values and six wells based on Kr *** Total Hardness(TH)values,all samples were classified as"soft",indicating their suitability for domestic and industrial *** Quality Index(WQI)results concluded that all samples met WHO and FAO guidelines for drinking and irrigation,*** distribution maps,constructed using GIs,facilitate the interpretation of the *** monitoring of quality parameters is essential to detect any deviation from permissible limits.

关键词： Nubian sandstone Aquifer Water Quality Assessment Hydro-chemical Analysis Irrigation Quality Indicators Domestic Use Water Quality Index

Cost burden following esophagectomy:A single centre observational study

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World Journal of Gastrointestinal surgery 2024年第7期16卷 2255-2269页

作者： Vered Buchholz Dong Kyu Lee David s Liu Ahmad aly stephen A Barnett riley Hazard Peter Le Benjamin Kioussis Vijayaragavan Muralidharan Laurence Weinberg Department of surgery Austin HealthMelbourne 3084VictoriaAustralia Department of Anesthesiology and Pain Medicine Dongguk University Ilsan HospitalSeoul 14566GoyangSouth Korea Department of surgery Austin HealthThe University of MelbourneMelbourne 3084VictoriaAustralia Department of Anesthesia Austin HealthMelbourne 3084VictoriaAustralia Department of Anesthesia Austin HospitalHeidelberg 3084VictoriaAustralia Department of Critical Care The University of MelbourneMelbourne 3084VictoriaAustralia

BACKGrOUND Cost analyses of patients undergoing esophagectomy is valuable for identifying modifiable expenditure drivers to target and curtail costs while improving the quality of *** aimed to define the cost-complication relationship after esophagectomy and delineate the incremental contributions to *** To assess the relationship between the hospital costs and potential cost drivers post esophagectomy and investigate the relationship between the cost-driving variables(predicting variables)and hospital costs(dependent variable).METHODs In this retrospective single center study,the severity of complications was graded using the Clavien-Dindo(CD)classification *** esophagectomy complications were categorized and defined according to consensus *** costing data included the in-hospital costs of the index admission and any unplanned admission within 30 postoperative *** used correlation analysis to assess the relationship between key clinical variables and hospital costs(in United states dollars)to identify cost drivers.A mediation model was used to investigate the relationship between these variables and hospital *** A total of 110 patients underwent primary esophageal *** median admission cost was $47822.7(interquartile range:35670.2-68214.0).The total effects on costs were $13593.9(95%CI:10187.1-17000.8,Pr each increase in CD severity grade,$4781(95%CI:3772.7-5789.3,Pr each increase in the number of complications,and $42552.2(95%CI:8309-76795.4,P=0.015)if a key esophagectomy complication *** esophagectomy complications drove the costs directly by $11415.7(95%CI:992.5-21838.9,P=0.032).CONCLUsION The severity and number of complications,and the development of key esophagectomy complications significantly contributed to total hospital *** institutional initiatives and strategies are needed to enhance patient outcomes and minimize costs.

关键词： Anesthesia Esophagectomy Complications Cancer surgery

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Winning Hearts

ChinAfrica 2024年第3期16卷 44-45页

作者： aly DIOUF

sinohydro and senegal join forces to provide drinking water in ***,a subsidiary of PowerChina,is currently engaged in efforts to substantially enhance the potable water supply in Dakar,senegal.A diligent group of Chinese and senegalese workers is engaged in roundthe-clock efforts along the Avenue du Front de Terre prolongée,which marks the starting point of the route des Pères Maristes,with the objective of improving the distribution network for potable water in the Dakar *** a population density of 7,277 inhabitants per square km and an estimated 1.18 million inhabitants in 2023,there is an evident and increasing need for potable *** need is further compounded by significant water loss caused by the advanced age of the pipelines,with some pipes dating back to the colonial era.

关键词： Avenue starting network

Does local vaginal estrogen after tension-free transobturator vaginal tape reduce overactive bladder symptoms in postmenopausal women? A prospective randomized, controlled study

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Asian Journal of Urology 2024年第1期11卷 86-92页

作者： samer Mahmoud Morsy Dalia Farouk sara Hassan Ahmed Yehia Abdelaziz Hussein aly Hussein Urology Department Kasr Al Ainy HospitalCairo UniversityCairoEgypt Obstetrics and Gynecology Department Kasr Al Ainy HospitalCairo UniversityCairoEgypt

Objective:We aimed to evaluate the efficacy of topical estrogen after transvaginal tension-free vaginal tape-obturator(TVT-O)in the treatment of de novo overactive bladder symptoms that appear after ***:This is a prospective randomized controlled study performed in the Urology and Gynecology Departments,Kasr Al Ainy Hospital,Cairo University,Cairo,*** hundred and ten postmenopausal females presenting during the period between January 2017 and November 2020 with stress urinary incontinence were included in the *** were divided into two groups,105 patients in Group A(treatment group)and 105 patients in Group B(control group).Patients in Group A underwent transvaginal TVT-O followed by local vaginal estrogen treatment for 6 months,while patients in Group B underwent transvaginal TVT-O *** study included any postmenopausal female with urodynamic stress urinary *** patients had to fulfill a 3-day bladder diary,overactive bladder symptoms score,urine analysis,urodynamic study,and post-voiding residual urine measurement by abdominal ultrasound preoperatively and at 3-month and 6-month ***:At 6-month follow-up,daytime frequency was reduced to 8%in Group A(increased to 21%in Group B)with a statistically significant difference between both groups(p=0.009).At 6-month follow-up,nocturia was 8%in Group A(11%in Group B)with no statistically significant difference between both groups(p=0.469).There was a statistically significant difference between both groups as regards to urinary urgency at 6-month follow-up(p=0.024).There was a statistically significant difference in postoperative wound healing events as regards to cure,hyperemia,gapping,and wound infection 1 week after intervention between both groups(p=0.008).No local or systemic side-effects were reported from local estrogen ***:Local vaginal estrogen treatment given to postmenopausal patients after midurethral sling procedures can reduce the symptoms o

关键词： stressurinary incontinence Estrogen Midurethral sling Overactive bladder symptom

Eau les coeurs sinohydro et le senegal unissent leurs forces pour l'eau potable a Dakar

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中国与非洲（法文版） 2024年第3期16卷 44-45页

作者： aly DIOUF 不详

Au sénegal,sinohydro,une filiale de APowerChina,se consacre a I'amelioration significative de I'approvisionnement en eau potable de *** I'avenue du Front de Terre prolongée,a I'origine de la route des Peres Maristes,uneéquipe devouée d'ouvriers sénegalais et chinois s'affaire jour et nuit pour optimiser le reseau de distribution d'eau potable dans le departement de Dakar.

关键词： pour des forces

Why do thoracic epidurals fail?A literature review on thoracic epidural failure and catheter confirmation

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World Journal of Critical Care Medicine 2024年第3期13卷 11-16页

作者： Kamal Kumar Fuhazia Horner Mohamed aly Gopakumar s Nair Cheng Lin Department of Anesthesia and Perioperative Medicine Schulich School of MedicineWestern UniversityLondon N6A 5W9ONCanada Department of London Health sciences Victoria HospitalLondon N6A 5W9ONCanada schulich school of Medicine and Dentistry Western UniversityLondon N6A5W9ONCanada

Thoracic epidural anesthesia(TEA)has been the gold standard of perioperative analgesia in various abdominal and thoracic ***,misplaced or displaced catheters,along with other factors such as technical challenges,equipment failure,and anatomic variation,lead to a high incidence of unsatisfactory *** article aims to assess the different sources of TEA failure and strategies to validate the location of thoracic epidural catheters.A literature search of PubMed,Medline,science Direct,and Google scholar was *** search results were limited to randomized controlled *** suggests techniques such as electrophysiological stimulation,epidural waveform monitoring,and x-ray epidurography for identifying thoracic epidural placement,but there is no one particular superior confirmation method;clinicians are advised to select techniques that are practical and suitable for their patients and practice environment to maximize success.

关键词： Thoracic epidural Failure rate Placement Electrophysiological stimulation Epidural waveform monitoring X-ray epidurography

Corridors écologiques

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中国与非洲（法文版） 2024年第6期16卷 24-26页

作者： GE LIJUN aly DIOUF 不详

Fary Dieng a nourri une passion pour la conduite depuis son ***,cette《femme d'action》a obtenu son permis il y a quelques anné***ès intéressée par le développement des transports en commun,elle suivait atten tiv... 详细信息

关键词： son des pour