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Effect of reperfusion strategy on QT dispersion in patients with acute myocardial infarction:Impact on in-hospital arrhythmia

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World Journal of Cardiology 2023年第3期15卷 106-115页

作者： Mohamed Aboel-Kassem F abdelmegid Mohamed M Bakr hamdy Shams-Eddin Amr A Youssef Ahmed abdel-Galeel Department of Cardiovascular Medicine Assiut University Heart HospitalAssiut UniversityAssiut 71526Egypt Department of Cardiology Sohag Heart and GIT CenterSohag 85264Egypt Department of Cardiology Assiut Police HospitalAssiut 71526Egypt Department of Cardiology Qena General HospitalQena 92354Egypt

BACKGROUND Myocardial ischemia and ST-elevation myocardial infarction(STEMI)increase QT dispersion(QTD)and corrected QT dispersion(QTcD),and are also associated with ventricular *** To evaluate the effects of reperfusion strategy[primary percutaneous coronary intervention(PPCI)or fibrinolytic therapy]on QTD and QTcD in STEMI patients and assess the impact of the chosen strategy on the occurrence of in-hospital *** This prospective,observational,multicenter study included 240 patients admitted with STEMI who were treated with either PPCI(group I)or fibrinolytic therapy(group II).QTD and QTcD were measured on admission and 24 hr after reperfusion,and patients were observed to detect in-hospital *** There were significant reductions in QTD and QTcD from admission to 24 hr in both group I and group II *** and QTcD were found to be shorter in group I patients at 24 hr than those in group II(53±19 msec vs 60±18 msec,P=0.005 and 60±21 msec vs 69+22 msec,P=0.003,respectively).The occurrence of in-hospital arrhythmia was significantly more frequent in group II than in group I(25 patients,20.8%vs 8 patients,6.7%,P=0.001).Furthermore,QTD and QTcD were higher in patients with in-hospital arrhythmia than those without(P=0.001 and P=0.02,respectively).CONCLUSION In STEMI patients,PPCI and fibrinolytic therapy effectively reduced QTD and QTcD,with a higher observed reduction using *** was associated with a lower incidence of in-hospital arrhythmia than fibrinolytic *** addition,QTD and QTcD were shorter in patients not experiencing in-hospital arrhythmia than those with arrhythmia.

关键词： Arrhythmia QT dispersion ST-segment elevation myocardial infarction Reperfusion Primary percutaneous coronary intervention Fibrinolytic therapy

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Optimization of Deep Learning Model for Plant Disease Detection Using Particle Swarm Optimizer

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Computers, Materials & Continua 2022年第5期71卷 4019-4031页

作者： Ahmed Elaraby Walid hamdy Madallah Alruwaili Department of Computer Science Faculty of Computers and InformationSouth Valley UniversityQenaEgypt Department of Math. &Computer Science Faculty of SciencePort Said UniversityEgypt College of Computer and Information Sciences Jouf UniversitySakakaAljoufKingdom of Saudi Arabia

Plant diseases are a major impendence to food security,and due to a lack of key infrastructure in many regions of the world,quick identification is still *** losses owing to illnesses are a severe problem for both large farming structures and rural communities,motivating our *** of the large range of diseases,identifying and classifying diseases with human eyes is not only time-consuming and labor intensive,but also prone to being mistaken with a high error *** learning-enabled breakthroughs in computer vision have cleared the road for smartphone-assisted plant disease and *** proposed work describes a deep learning approach for detection plant ***,we proposed a deep learning model strategy for detecting plant disease and classification of plant leaf *** our research,we focused on detecting plant diseases in five crops divided into 25 different types of classes(wheat,cotton,grape,corn,and cucumbers).In this task,we used a public image database of healthy and diseased plant leaves acquired under realistic *** our work,a deep convolutional neural model AlexNet and Particle Swarm optimization was trained for this task we found that the metrics(accuracy,specificity,Sensitivity,precision,and Fscore)of the tested deep learning networks achieves an accuracy of 98.83%,specificity of 98.56%,Sensitivity of 98.78%,precision of 98.67%,and F-score of 98.47%,demonstrating the feasibility of this approach.

关键词： Deep neural networks plant diseases detection classification AlexNet PSO

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On null Controllability of fractional stochastic differential system with fractional Brownian motion

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Journal of Control and Decision 2021年第1期8卷 50-63页

作者： hamdy M.Ahmed Higher Institute of Engineering El-Shorouk AcademyEl-Shorouk CityCairoEgypt

In this paper,we are dealing with the null controllability of fractional stochastic differential system with fractional Brownian *** null controllability for Sobolev-type Hilfer fractional stochastic differential system with fractional Brownian motion of Clarke’s subdifferential type is *** sufficient conditions for null controllability of fractional stochastic differential system with fractional Brownian motion and control on the boundary are ***,an example is given to illustrate the obtained results.

关键词： Fractional Brownian motion Clarke subdifferential fractional stochastic differential system null controllability

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Hilfer fractional neutral stochastic partial differential equations with delay driven by Rosenblatt process

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Journal of Control and Decision 2022年第2期9卷 226-243页

作者： hamdy M.Ahmed Higher Institute of Engineering El-Shorouk AcademyEI-Shorouk CityCairoEgypt

This manuscript is mainly focusing on the approximate controllability and the null controllability for fractional neutral stochastic partial differential equations with delay driven by Rosenblatt *** discuss the sufficient conditions for approximate controllability and null controllability for Hilfer fractional neutral stochastic partial differential equations driven by Rosenblatt ***,we provide two examples to verify the obtained results.

关键词： Hilfer fractional neutral stochastic integro-differential systems approximate controllability null controllability Rosenblatt process

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Design of adaptive intuitionistic fuzzy controller for synchronisation of uncertain chaotic systems

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CAAI Transactions on Intelligence Technology 2020年第4期5卷 237-246页

作者： Mohamed hamdy Salah Helmy Mohamed Magdy Department of Industrial Electronics and Control Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf-32952Egypt Department of Mechatronics Engineering Higher Institute of Engineering and TechnologyEl-Mahalla El-Kobra-31951Egypt

This study presents the synchronisation between two non-linear Lorenz chaotic systems using an adaptive intuitionistic fuzzy controller(AIFC).This problem is solved in the presence of external disturbances and *** classes of Lorenz systems have been formulated one as the master and the other as the *** master and slave systems have different initial *** different initial conditions,both systems *** is called the butterfly effect that rules the behaviour of chaotic *** is chosen as a different method that has not been used before to synchronise the chaotic *** scaling factors of the inputs and the output of the intuitionistic fuzzy controller(IFC)are tuned using the artificial bee colony(ABC)algorithm depending on a specified objective *** IFC stability is studied when it is applied to synchronise the Lorenz *** simulation results achieved to assess the adequacy of the proposed control and to exhibit its dependability to synchronise the Lorenz system.

关键词： function. chaotic specified

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State-space approach to vibration of gold nano-beam induced by ramp type heating

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Nano-Micro Letters 2010年第3期2卷 139-147页

作者： hamdy M.Youssef Khaled A.Elsibai Mathematical Department-Faculty of Education-Alexandria University-Egypt Mathematics Department Faculty of ScienceMansoura University

In the nanoscale beam,two effects become *** is the non-Fourier effect in heat conduction and the other is the coupling effect between temperature and strain *** the present study,a generalized solution for the generalized thermoelastic vibration of gold nano-beam resonator induced by ramp type heating is *** solution takes into account the above two ***-space and Laplace transform methods are used to determine the lateral vibration,the temperature,the displacement,the stress and the strain energy of the *** effects of the relaxation time and the ramping time parameters have been studied.

关键词： Thermoelasticity Euler-Bernoulli equation Gold nano-beam Ramp type heating

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Kinetic Modelling of the Influence of H<sub>2</sub>S on Dibenzothiophene Hydrodesulfurization in a Batch System over Nano-MoS<sub>2</sub>

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Advances in Chemical Engineering and Science 2020年第3期10卷 135-148页

作者： hamdy Farag abdel-Nasser A. El-Hendawy Masahiro Kishida Department of Material Process Engineering Graduate School of Engineering Kyushu University Fukuoka Japan Chemistry Department Faculty of Science Mansoura University Mansoura Egypt Physical Chemistry Department National Research Center Cairo Egypt

In this work, the possibility of enhanced activity during the hydrodesulfurization of dibenzothiophene over certain nano-MoS2 catalyst due to the presence of H2S was examined by focusing on the reaction kinetics. With H2S generated in situ, the overall reaction followed the autocatalytic rate law;while in the absence of H2S the kinetics indicated a pseudo-first-order reaction. H2S appears to modify the relative contributions of parallel hydrogenation and desulfurization reactions by drastically increasing the hydrogenation rate. Kinetic models were developed that describe the hydrodesulfurization reaction at various H2S concentrations, and the kinetic parameters and adsorption equilibrium constants associated with this process were estimated by fitting the experimental data. The results suggest that the promotion and/or inhibition of hydrodesulfurization by H2S likely result from the same overall reaction mechanism.

关键词： Hydrodesulfurization MoS2 Kinetics Model Autocatalysis Dibenzothiophene

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On the Application of the Adomian’s Decomposition Method to a Generalized Thermoelastic Infinite Medium with a Spherical Cavity in the Framework Three Different Models

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Fluid Dynamics & Materials Processing 2019年第5期15卷 597-611页

作者： Najat A.Alghamdi hamdy M.Youssef Mathematics Department Faculty of ScienceUmm Al-Qura UniversityMakkahSaudi Arabia Mathematics Department Faculty of EducationAlexandria UniversityAlexandriaEgypt Mathematics Department Faculty of EngineeringUmm Al-Qura UniversityMakkahSaudi Arabia

A mathematical model is elaborated for a thermoelastic infinite body with a spherical cavity.A generalized set of governing equations is formulated in the context of three different models of thermoelasticity:the Biot model,also known as“coupled thermoelasticity”model;the Lord-Shulman model,also referred to as“generalized thermoelasticity with one-relaxation time”approach;and the Green-Lindsay model,also called“generalized thermoelasticity with two-relaxation times”*** Adomian’s decomposition method is used to solve the related mathematical *** bounding plane of the cavity is subjected to harmonic thermal loading with zero heat flux and *** results for the temperature,radial stress,strain,and displacement are represented *** is shown that the angular thermal load and the relaxation times have significant effects on all the studied fields.

关键词： Adomian’s decomposition method generalized thermoelasticity relaxation time iteration method

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Interstitial cells of Cajal, the Maestro in health and disease

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World Journal of Gastroenterology 2010年第26期16卷 3239-3248页

作者： Randa M Mostafa Yasser M Moustafa Hosam hamdy Department of Basic Medical Sciences College of Medicine Sharjah University Sharjah 27272 United Arab Emirates Department of Pharmacology and Toxicology College of Pharmacy Suez Canal University Ismaelia 24421 Egypt Department of Surgery Vice Chancellor of Medical and Health sciences Colleges Sharjah University Sharjah 27272 United Arab Emirates

Interstitial cells of Cajal (ICC) are important players in the symphony of gut motility. They have a very signif icant physiological role orchestrating the normal peristaltic activity of the digestive system. They are the pacemaker cells in gastrointestinal (GI) muscles. Absence, reduction in number or altered integrity of the ICC network may have a dramatic effect on GI system motility. More understanding of ICC physiology will foster advances in physiology of gut motility which will help in a future breakthrough in the pharmacological interventions to restore normal motor function of GI tract. This mini review describes what is known about the physiologic function and role of ICCs in GI system motility and in a variety of GI system motility disorders.

关键词： Interstitial cells of Cajal Gastrointestinal motility Peristalsis

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Searching for the Random Walking microorganism cells

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International Journal of Biomathematics 2019年第6期12卷 43-54页

作者： Mohamed Abd Allah El-Hadidy hamdy MAbou-Gabalt Mathematics Statistics DepartmentCollege of ScienceTaibah UniversityYanbuKingdom of Saudi Arabia Mathematics Department Faculty of ScienceTanta UniversityTaniaEgypt

In this paper,we present a complex cooperative search technique for finding the Random Walking microorganism cells on one of n-intersect real lines at the *** have 2n unit speed searchers starting together from the ***,proving the existence of a finite search plan,we are discussing the existence of optimality for this search plan which minimizes the expected value of the first meeting time between one of the searchers and the microorganism cells.

关键词： Cooperative search technique one-dimensional Random Walking microor ganism cells optimal search plan.

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