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Stability analysis solutions of the nonlinear modified Degasperis-Procesi water wave equation

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Journal of Ocean Engineering and Science 2017年第3期2卷 155-160页

作者： m.A.Helal Aly R.Seadawy m.Zekry mathematics Department Faculty of ScienceCairo UniversityGizaEgypt mathematics Department Faculty of ScienceTaibah UniversityAl-UlaSaudi Arabia mathematics Department Faculty of ScienceBeni-Suef UniversityEgypt

In the present study,the solitary wave solutions of modified Degasperis-Procesi equation are *** the standard Degasperis-Procesi equation,where multi-peakon solutions arise,the modification caused a change in the characteristic of these peakon solutions and changed it to bell-shaped *** using the extended auxiliary equation method,we deduced some new soliton solutions of the fourthorder nonlinear modified Degasperis-Procesi equation with constant *** solutions include symmetrical,non-symmetrical kink solutions,solitary pattern solutions,weiestrass elliptic function solutions and triangular function *** discuss the stability analysis for these solutions.

关键词： modified Degasperis-Procesi water wave equation Extended auxiliary equation method Solitary wave solutions

Solution of a problem of thermal stresses in a non-homogeneous thermoelastic infinite medium of isotropic material by finite difference method

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Journal of Ocean Engineering and Science 2019年第3期4卷 256-262页

作者： A.m.Farhan A.m.Abd-Alla moaiad A.Khder Physics Department Faculty of ScienceJazan UniversitySaudi Arabia Physics Department Faculty of ScienceZagzig UniversityEgypt mathematics Department Faculty of ScienceSohag UniversityEgypt Department of Computer Science Applied Science UniversityBahrain

The present work deals with a new problem of thermoelasticity for an infinitely long and isotropic circular cylinder of temperature dependent physical *** inner and outer curved surfaces of the cylinder are subjected to both the mechanical and thermal boundary conditions.A finite difference model is developed to derive the solution of the problem in which the governing equations are uncoupled linear partial differential *** transient solution at any time can be evaluated directly from the *** order to demonstrate the efficiency of the present model we consider a suitable material and obtain the numerical solution of displacement,temperature,and stresses inside the cylinder for the homogeneous-dependent material properties of the *** results are analyzed with the help of different graphical plots.

关键词： Thermal stress Thermoelasticity Wave propagation Finite difference method non-homogeneous medium

Effects of Supplementing Various Linoleic to α-linolenic Acid Ratios and Vitamin A on Production Performance and Egg Characteristics of Laying Hens during Summer months

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Journal of Zoological Research 2019年第1期1卷 1-9页

作者： S.Ahmad m.Yousaf Z.Kamran m.U.Sohail m.n.Tahir K.C.Koutoulis A.manzoor 无 University College of Veterinary and Animal Sciences The Islamia University of Bahawalpur-63100Pakistan Institute of Animal Sciences University of AgricultureFaisalabad-38040Pakistan Department of Physiology GC UniversityFaisalabad-38000Pakistan Department of Avian medicine School of Health SciencesUniversity of ThessalyKarditsa-43100Greece Department of meat Science and Technology University of Veterinary and Animal SciencesLahore-54000Pakistan Poultry Production Division Al-Watania Poultry Institute of TechnologyAl-Bukayriyah51941Saudi Arabia

In the present feeding trial,responses of laying hens that were kept at high ambient temperature and Fed with various dietary ratios of linoleic acid(LnA)toα-linolenic acid(ALA)and vitamin A levels on production performance and egg quality traits were evaluated.A total of 360 Leghorn laying hens at 40th week of age(average initial body weight;1.79±0.23 kg)were fed with various combinations of canola oil and linseed oil containing diets to achieve LnA to ALA dietary ratios of 20:1,10:1,4:1,2:1,1:1 and 1:2,each supplemented with 3000 or 10000 IU of vitamin A/kg of *** experiment was designed as a 6×2 factorial Completely Randomized Design that continued for 12 *** intake,body weight gain,egg production and egg quality traits were recorded during the *** dietary LnA to ALA ratio or increasing poly unsaturated fatty acids(PUFA)in the diet decreased(Pn and yolk percentage in laying *** intake,hen-day and hen-housed egg production,feed conversion ratio(FCR)per dozen of eggs and shell quality remained unaffected(P>0.05)by dietary *** conversion ratio per kg eggs,egg weight and egg-shell thickness showed a curvilinear(Pnse to decreasing dietary LnA to ALA *** the dietary ratio of LnA to ALA of 4:1 or less could produce eggs by the hens with desirable quantities of n-6 and n-3 PUFA–that are characteristics of functional diets–the performance of laying hens in terms of body weight gain and egg-yolk percentage was slightly ***,a 4:1 or 2:1 LnA to ALA combination can make a borderline between the production traits and the feed economics.

关键词： Egg quality Fatty acids Hot climate Layers performance Vitamin A

Characterization of cytotoxicity of airborne particulates from urban areas of Lahore

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Journal of Environmental Sciences 2012年第11期24卷 2028-2034页

作者： Badar Ghauri m.mansha Christian Khalil Institute of Space Technology Karachi 72500Pakistan School of Risk and Safety Sciences University of New South WalesAustralia

A number of species （organic and inorganic） in airborne particulates cause the toxicity to living being. The potential of in vitro test methods were explored for toxicity assessment of trace toxic elements （inorganic species） present in ambient air on human being （lungs）. A year long sampling of airborne particles （Pm2.5） was carded （April 2008 to march 2009） in Lahore, Pakistan. A total of thirty nine samples were collected on 47 mm Zefiuor Teflon filter membranes and each was analysed to characterize for the elements： Sb, As, Be, Cd, Cr, Co, Pb, mn, Hg using ICP-mS in water extract and total acid digestate. The samples cytotoxicity was also established using lung derived cells and mTS colorimetric assays. This generated dose response curves and IC50 values for the elemental mixtures identified on the Teflon filter membrane. The results indicated that even at low concentrations airborne elemental mixtures displayed an additive toxic effect.

关键词： particulate matter trace elements in vitro toxicity

Effect of size and indium-composition on linear and nonlinear optical absorption of InGan/Gan lens-shaped quantum dot

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Chinese Physics B 2016年第5期25卷 380-387页

作者： Ahmed S Jbara Zulkafli Othaman m A Saeed Center for Sustainable nanomaterials Universiti Teknologi Malaysia Physics Department Science College Al-Muthanna University Department of Physics Faculty of Science Universiti Teknologi Malaysia

Based on the Schr ¨odinger equation for envelope function in the effective mass approximation, linear and nonlinear optical absorption coefficients in a multi-subband lens quantum dot are investigated. The effects of quantum dot size on the interband and intraband transitions energy are also analyzed. The finite element method is used to calculate the eigenvalues and eigenfunctions. Strain and In-mole-fraction effects are also studied, and the results reveal that with the decrease of the In-mole fraction, the amplitudes of linear and nonlinear absorption coefficients increase. The present computed results show that the absorption coefficients of transitions between the first excited states are stronger than those of the ground states. In addition, it has been found that the quantum dot size affects the amplitudes and peak positions of linear and nonlinear absorption coefficients while the incident optical intensity strongly affects the nonlinear absorption coefficients.

关键词： linear and nonlinear optical absorption coefficients lens quantum dot finite element method

Computational study of inverse ferrite spinels

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Chinese Physics B 2019年第5期28卷 305-311页

作者： A EL maazouzi R masrour A Jabar m Hamedoun Laboratory of materials Processes Environment and Quality Cadi Ayyad University National School of Applied Sciences Institute of nanomaterials and nanotechnologies

The magnetic properties of inverse ferrite Fe_(3+) Fe_(3+)Co_(2+) O^(2-)_4, Fe^(3+) Fe^(3+)Cu^(2+) O^2_(-4), Fe^(3+) Fe^(3+)Fe^(2+) O^2_(-4),and Fe^(3+) Fe^(3+)ni^(2+) O^(2-)_4spinels have been studied using monte Carlo simulation. We have also calculated the critical and Curie Weiss temperatures from the thermal magnetizations and inverse of magnetic susceptibilities for each *** hysteresis cycles have been found for the four systems. Finally, we found the critical exponents associated with magnetization, magnetic susceptibility, and external magnetic field. Our results of critical and Curie Weiss temperatures are similar to those obtained by experiment results. The critical exponents are similar to those of known 3 D-Ising model.

关键词： inverse ferrites spinels monte Carlo simulation critical and Curie Weiss temperatures magnetic hysteresis cycles critical exponents

Correlation between microstructure and wear behavior of AZX915 mg-alloy reinforced with 12 wt%TiC particles by stir-casting process

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Journal of magnesium and Alloys 2016年第4期4卷 306-313页

作者： nagaraj m.Chelliah Harpreet Singh m.K.Surappa Department of mechanical Engineering Indian Institute of Technology RoparRupnagar 140001PunjabIndia Department of materials Engineering Indian Institute of ScienceBengaluru 560012KarnatakaIndia

The present work concerns with correlation between microstructure and wear behavior of AZX915 mg-alloy reinforced with 12 wt%of TiC particles by stir-casting *** sliding tests were performed under ambient environment by using a pin-on-disc(En8 steel)configuration with a normal load of 50 n at a constant sliding speed of 2.50 ms^(−1).While as-cast composite experienced delamination wear,heat treated composite suffered from delamination and oxidation wear during dry sliding ***,the heat treated composite exhibited lower friction and higher wear rate as compared to the as-cast *** and wear behavior were correlated with microstructures based on the concept of oxidation tendency and crack nucleation/***,a schematic model has been proposed illustrating wear mechanisms from the point of view of subsurface microstructural evolution of the AZX915-TiCp composite.

关键词： mg-alloys magnesium matrix composites Heat treatment Delamination Tribo-oxidation

Disturbance Evaluation in Power System Based on machine Learning

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Computers, materials & Continua 2022年第4期71卷 231-254页

作者： Emad m.Ahmed mohamed A.Ahmed Ziad m.Ali Imran Khan Department of Electrical Engineering College of EngineeringJouf UniversitySakaka72388Al-JoufSaudi Arabia Department of Electrical Engineering College of EngineeringPrince Sattam bin Abdulaziz UniversityWadi Addawaser11991Saudi Arabia Department of Electrical Engineering Aswan Faculty of EngineeringAswan UniversityAswan81542Egypt Department of Electrical Engineering University of Engineering and Technology PeshawarPakistan

The operation complexity of the distribution system increases as a large number of distributed generators(DG)and electric vehicles were introduced,resulting in higher demands for fast online reactive power *** a power system,the characteristic selection criteria for power quality disturbance classification are not *** classification effect and efficiency needs to be improved,as does the generalization *** order to categorize the quality in the power signal disturbance,this paper proposes a multi-layer severe learning computer auto-encoder to optimize the input weights and extract the characteristics of electric power quality ***,a multi-label classification algorithm based on rating is proposed to understand the relationship between the labels and identify the various power quality *** two algorithms are combined to construct a multi-label classification model based on a multi-level extreme learning machine,and the optimal network structure of the multi-level extreme learning machine as well as the optimal multi-label classification threshold are *** proposed method can be used to classify the single and compound power quality disturbances with improved classification effect,reliability,robustness,and anti-noise performance,according to the experimental *** hamming loss obtained by the proposed algorithm is about 0.17 whereas mL-RBF,SVm and mL-Knn schemes have 0.28,0.23 and 0.22 respectively at a noise intensity of 20 *** average precision obtained by the proposed algorithm 0.85 whereas the mL-RBF,SVm and mL-Knn schemes indicates 0.7,0.77 and 0.78 respectively.

关键词： Optimal power flow optimization algorithm deep learning power systems

Automated Deep Learning Based Cardiovascular Disease Diagnosis Using ECG Signals

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Computer Systems Science & Engineering 2022年第7期42卷 183-199页

作者： S.Karthik m.Santhosh m.S.Kavitha A.Christopher Paul Department of Computer Science&Engineering SNS College of TechnologyCoimbatore641035India Department of Information Technology Karpagam Institute of TechnologyCoimbatore641105India

Automated biomedical signal processing becomes an essential process to determine the indicators of diseased *** the same time,latest develop-ments of artiﬁcial intelligence(AI)techniques have the ability to manage and ana-lyzing massive amounts of biomedical datasets results in clinical decisions and real time *** can be employed for medical imaging;however,the 1D biomedical signal recognition process is still needing to be ***(ECG)is one of the widely used 1-dimensional biomedical sig-nals,which is used to diagnose cardiovascular *** assisted diag-nostic modelsﬁnd it difﬁcult to automatically classify the 1D ECG signals owing to time-varying dynamics and diverse proﬁles of ECG *** resolve these issues,this study designs automated deep learning based 1D biomedical ECG sig-nal recognition for cardiovascular disease diagnosis(DLECG-CVD)*** DLECG-CVD model involves different stages of operations such as pre-proces-sing,feature extraction,hyperparameter tuning,and classiﬁ*** the initial stage,data pre-processing takes place to convert the ECG report to valuable data and transform it into a compatible format for further *** addition,deep belief network(DBn)model is applied to derive a set of feature ***,improved swallow swarm optimization(ISSO)algorithm is used for the hyper-parameter tuning of the DBn ***,extreme gradient boosting(XGBoost)classiﬁer is employed to allocate proper class labels to the test ECG *** order to verify the improved diagnostic performance of the DLECG-CVD model,a set of simulations is carried out on the benchmark PTB-XL dataset.A detailed comparative study highlighted the betterment of the DLECG-CVD model interms of accuracy,sensitivity,speciﬁcity,kappa,mathew correlation coefﬁcient,and Hamming loss.

关键词： Biomedical signals 1-dimensional signal electrocardiogram artiﬁcial intelligence deep learning cardiovascular disease decision making