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International Journal of Agricultural and Biological Engineering 2020年第3期13卷 206-212页

作者： ahmed Atia Diaeldin Abdelkarim mahmoud Younis Abdullah Alhamdan Chair of Dates Industry&Technology College of Food&Agricultural SciencesKing Saud UniversityRiyadh 11451Saudi Arabia Department of Agricultural Engineering College of Food&Agricultural SciencesKing Saud UniversityRiyadh 11451Saudi Arabia

Barhi is a high-quality date cultivar,typically harvested and consumed fresh at the Khalal maturity stage when the fruits are crispy and sweet with bright yellow *** shelf-life of the Khalal stage(2-3 weeks)is very short for effective *** study aimed at investigating the role of calcium chloride(CaCl2)and salicylic acid(SA)as pre-storage treatments in preserving the color and texture of the fruit during both cold and controlled atmosphere(CA)storage ***-harvested Barhi fruits at the Khalal stage were treated with CaCl2(2%)or SA(2.0 mM),and then stored in cold and CA *** weight loss and decay percentages in the treated samples decreased,whereas the total soluble solids of the treated samples increased compared with those of the untreated *** best treatment in limiting changes in the color and texture of the fruits was CaCl2 treatment during CA storage.

关键词： Barhi dates calcium chloride salicylic acid color texture controlled atmosphere storage

A Novel Binary Emperor Penguin Optimizer for Feature Selection Tasks

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Computers, Materials & Continua 2022年第3期70卷 6239-6255页

作者： Minakshi Kalra Vijay Kumar Manjit Kaur Sahar ahmed idris Saban Oturk Hammam Alshazly Computer Science Department Government College BahadurgarhBahadurgarh124507India CSE Department National Institute of Technology Hamirpur177005India School of Engineering and Applied Sciences Bennett UniversityGreater Noida201310India College of Industrial Engineering King Khalid UniversityAbhaSaudi Arabia Department of Electrical and Electronics Engineering Amasya UniversityAmasyaTurkey Faculty of Computers and Information South Valley UniversityQena83523Egypt

Nowadays,due to the increase in information resources,the number of parameters and complexity of feature vectors *** offermore practical solutions instead of exact solutions for the solution of this *** Emperor PenguinOptimizer(EPO)is one of the highest performing meta-heuristic algorithms of recent times that imposed the gathering behavior of emperor *** shows the superiority of its performance over a wide range of optimization problems thanks to its equal chance to each penguin and its fast convergence *** traditional EPO overcomes the optimization problems in continuous search space,many problems today shift to the binary search ***,in this study,using the power of traditional EPO,binary EPO(BEPO)is presented for the effective solution of binary-nature *** algorithm uses binary search space instead of searching solutions like conventional EPO algorithm in continuous search *** this purpose,the sigmoidal functions are preferred in determining the emperor *** addition,the boundaries of the search space remain constant by choosing binary ***’s performance is evaluated over twenty-nine benchmarking *** evaluations are made to reveal the superiority of the BEPO *** addition,the performance of the BEPO algorithm was evaluated for the binary feature selection *** experimental results reveal that the BEPO algorithm outperforms the existing binary meta-heuristic algorithms in both tasks.

关键词： Metaheuristics optimization algorithms emperor penguin optimizer intensification diversification feature selection

BERT-CNN: A Deep Learning Model for Detecting Emotions from Text

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Computers, Materials & Continua 2022年第5期71卷 2943-2961页

作者： ahmed R.Abas Ibrahim Elhenawy Mahinda Zidan mahmoud Othman Department of Computer Science Faculty of Computer and InformaticsZagazig UniversityZagazig44519Egypt Department of Computer Science Faculty of Computers and Information TechnologyFuture University in Egypt11835Egypt

Due to the widespread usage of social media in our recent daily lifestyles,sentiment analysis becomes an important field in pattern recognition and Natural Language Processing(NLP).In this field,users’feedback data on a specific issue are evaluated and *** emotions within the text is therefore considered one of the important challenges of the current NLP *** have been widely studied in psychology and behavioral science as they are an integral part of the human *** describe a state of mind of distinct behaviors,feelings,thoughts and *** main objective of this paper is to propose a new model named BERT-CNN to detect emotions from *** model is formed by a combination of the Bidirectional Encoder Representations from Transformer(BERT)and the Convolutional Neural networks(CNN)for textual *** model embraces the BERT to train the word semantic representation language *** to the word context,the semantic vector is dynamically generated and then placed into the CNN to predict the *** of a comparative study proved that the BERT-CNN model overcomes the state-of-art baseline performance produced by different models in the literature using the semeval 2019 task3 dataset and ISEAR *** BERTCNN model achieves an accuracy of 94.7%and an F1-score of 94%for semeval2019 task3 dataset and an accuracy of 75.8%and an F1-score of 76%for ISEAR dataset.

关键词： BERT-CNN deep learning emotion detection semeval2019 text classification

Axonal degeneration of the ulnar nerve secondary to carpal tunnel syndrome: fact or fiction?

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Neural Regeneration Research 2013年第15期8卷 1418-1422页

作者： Radwa mahmoud Azmy Amira ahmed Labib Saly Hassan Elkholy Department of Special Medicine Faculty of Medicine Cairo University

The distribution of sensory symptoms in carpal tunnel syndrome is strongly dependent on the degree of electrophysiological dysfunction of the median nerve. The association between carpal tunnel syndrome and ulnar nerve entrapment is still unclear. In this study, we measured ulnar nerve function in 82 patients with carpal tunnel syndrome. The patients were divided into group I with minimal carpal tunnel syndrome （n = 35） and group II with mild to moderate carpal tunnel syndrome （n = 47） according to electrophysiological data. Sixty-one age- and sex-matched subjects without carpal tunnel syndrome were used as a control group. There were no significant differences in ulnar sensory nerve peak latencies or conduction velocities from the 4th and 5th fingers between patients with carpal tunnel syndrome and the control group. The ulnar sensory nerve action potential amplitudes from the 4th and 5th fingers were lower in patients with carpal tunnel syndrome than in the control group. The ratios of the ulnar sensory nerve action potential amplitudes from the 4th and 5th fingers were almost the same in patients with carpal tunnel syndrome as in the control group. These findings indicate that in patients with minimal to moderate carpal tunnel syndrome, there is some electrophysiological evidence of traction on the adjacent ulnar nerve fibers. The findings do not indicate axonal degeneration of the ulnar nerve.

关键词： neural regeneration peripheral nerve injury carpal tunnel syndrome median nerve extra-mediansymptoms motor conduction sensory conduction ulnar nerve ulnar amplitude ratio neuroregeneration

Effects of Gibberellic Acid (GA_(3)) and Salicylic Acid (SA) postharvest treatments on the quality of fresh Barhi dates at different ripening levels in the Khalal maturity stage during controlled atmosphere storage

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International Journal of Agricultural and Biological Engineering 2018年第3期11卷 211-219页

Barhi dates at Khalal maturity stage are well-known with their pleasant taste,crispy texture,and bright yellow *** is necessary to extend the duration of Barhi Khalal stage which is too short for effective *** study aimed to inspect the effects of Gibberellic Acid(GA_(3))and Salicylic Acid(SA)postharvest treatments on retaining the high quality of Khalal Barhi fruits during controlled atmosphere *** samples of Barhi fruits at Khalal stage harvested at three different ripening levels were dipped after harvesting in GA3(150 ppm)or SA(2.0 mmol/L)and subsequently stored in controlled atmosphere(0°С,5%O_(2),5%CO_(2),80%±5%RH).The results revealed that the GA_(3) and SA treatments reduced the percentage of weight loss and decay in the fruits,while the total soluble solids ***,GA_(3) and SA treatments were significantly efficient in limiting the changes in fruit color and texture of Barhi dates compared to the *** results support the experimental data and disclosed that the GA_(3)(150 ppm)treatment in the controlled atmosphere(CA)storage was better in conserving the quality of Barhi at the Khalal maturity stage and delaying ripening process.

关键词： Barhi dates Khalal maturity stage Gibberellic Acid(GA_(3)) Salicylic Acid(SA) postharvest treatments controlled atmosphere(CA)storage

Tungsten ion source under double-pulse laser ablation system

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Chinese Physics B 2017年第9期26卷 285-296页

作者： ahmed Asaad I Khalil Ashraf I Hafez mahmoud E Elgohary Mohamed A Morsy Department of Laser Sciences and Interactions National Institute of Laser Enhanced SciencesCairo UniversityGiza 12613Egypt Central Laboratory of Ministry of Electricity CairoEgypt Atomic Research Center Atomic Energy AuthorityCairo 13759Egypt Department of Nuclear Engineering Jordan University of Science and Technology IrbidJordan Department of Chemistry King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

New tungsten ion source is produced by using single and double-pulse laser ablation system. Combined collinear Nd：YAG laser beams（266＋1064 nm） are optimized to focus on the sample in air. Optimization of the experimental parameters is achieved to enhance the signal-to-noise ratio of the emission spectra. The velocity distribution of the emitted plasma cloud is carefully measured. The influences of the potential difference between the bias electrodes, laser wavelength and intensity on the current signal are also studied. The results show that the increase in the tungsten ion velocity under the double-pulse lasers causes the output current signal to increase by about three folds. The electron density and temperature are calculated by using the Stark-broadened line profile of tungsten line and Boltzmann plot method of the upper energy levels, respectively. The signal intensity dependence of the tungsten ion angular distribution is also analyzed. The results indicate that the double-pulse laser ablation configuration is more potent technique for producing more metal ion source deposition, thin film formation, and activated plasma-facing component material.

关键词： tungsten ion beam double-pulse lasers ablation system laser ablation system optical Instrumentation

A Novel Technique for Early Detection of COVID-19

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Computers, Materials & Continua 2021年第8期68卷 2283-2298页

作者： Mohammad Yamin Adnan ahmed Abi Sen Zenah mahmoud AlKubaisy Rahaf Almarzouki Department of Management Information Systems Faculty of Economics and AdministrationKing Abdulaziz UniversityJeddah21589Saudi Arabia Faculty of Computer and Information Systems Islamic University of MadinahAl MedinaSaudi Arabia

COVID-19 is a global pandemic disease,which results from a dangerous coronavirus attack,and spreads aggressively through close contacts with infected people and *** far,there is not any prescribed line of treatment for COVID-19 *** to control the disease are very limited,partly due to the lack of knowledge about technologies which could be effectively used for early detection and control the *** detection of positive cases is critical in preventing further spread,achieving the herd immunity,and saving ***,so far we do not have effective toolkits to diagnose very early detection of the *** research findings have suggested that radiology images,such as X-rays,contain significant information to detect the presence of COVID-19 virus in early ***,to detect the presence of the disease in in very early stages from the X-ray images by the naked eye is not *** Intelligence(AI)techniques,machine learning in particular,are known to be very helpful in accurately diagnosing many diseases from radiology *** paper proposes an automatic technique to classify COVID-19 patients from their computerized tomography(CT)scan *** technique is known as Advanced Inception based Recurrent Residual Convolution Neural Network(AIRRCNN),which uses machine learning techniques for classifying *** focus on the Advanced Inception based Recurrent Residual Convolution Neural Network,because we do not find it being used in the ***,we conduct principal component analysis,which is used for dimensional *** results of our method have demonstrated an accuracy of about 99%,which is regarded to be very efficient.

关键词： COVID-19 classification feature selection dimensionality reduction chest CT deep learning deep convolutional neural network AIRRCNN

Effect of Pd or Ir on the catalytic performance of Mo/H-ZSM-5 during the non-oxidative conversion of natural gas to petrochemicals

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Journal of Natural Gas Chemistry 2008年第4期17卷 337-343页

作者： ahmed K.Aboul-Gheit ahmed E.Awadallah Salah M.El-Kossy Abdel-Lateef H.mahmoud Process Development Division Egyptian Petroleum Research Institute Faculty of Science Department of ChemistryMNF University Ageeba Petroleum Co.

Natural gas conversion to petrochemicals, principally, benzene, naphthalene, toluene, as well as ethylene under non-oxidative conditions was examined in a fixed bed flow reactor at 700 ℃ and gaseous hourly space velocity （GHSV） of 1500 ml·g ^-1·h^-1 at time-on-stream ranging from 5 rain to 4 h using catalysts containing 6.0%Mo/H-ZSM-5 promoted with Pd or Ir metal. The catalysts were characterized by XRD, TPD, and TGA. The addition of Pd or Ir to 6%Mo/H-ZSM-5 catalyst promoted ethylene production but inhibited the cyclization reaction to aromatics owing to the strong interaction between these noble metals and the framework Al species, which were attached to the acid sites during the impregnation process. Coke deposition on the catalysts was found to decrease upon addition of 0.5wt% of Pd or Ir to 6%Mo/H-ZSM-5 catalyst owing to the hydrogenating activity of these metals.

关键词： natural gas methane benzene ethylene molybdenum Pd Ir H-ZSM-5

Surgical outcomes of complicated cataract with pediatric trematode granulomatous uveitis

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International Journal of Ophthalmology(English edition) 2023年第3期16卷 354-360页

作者： mahmoud M.Farouk Amr Mounir Mortada ahmed Abozaid Engy Mohamed Mostafa Marwa mahmoud Abdellah Department of Ophthalmology Sohag Faculty of MedicineSohag UniversitySohag 82524Egypt

AIM:To describe the clinical characteristics and surgical outcomes of complicated cataract with pediatric trematodal granulomatous uveitis(TGU).METHODS:Patients of cataract with TGU in the membranous(inactive) stage underwent cataract surgery with intraocular lens(IOL) *** history and ophthalmic examination were conducted for all cases,whereas Schimphlug imaging and corneal topography were done for some *** follow up was done on the 1st,2nd,and 5th postoperative days after ***,it was done at least at one,three,and six months *** and postoperative complications and the methods of their management were ***:Twelve eyes of 12 male children were included in this study ranging from 8 to *** mean best corrected Snellen visual acuity(BCVA) was significantly improved from 0.09±0.06 preoperatively to 0.37±0.11 at the final visit 6mo postoperatively(P<0.001).Schimphlug imaging and corneal topography showed flattening of the anterior surface of the inferior *** difficulties and complications included the poor dilatability of the drown down pupil,strong posterior synechia between the anterior lens capsule and the iris at the site of the inferior retrocorneal vascularized membrane and *** cases underwent primary hydrophobic IOL ***:Surgery for this type of cataract is relatively safe and *** is associated with some specific difficulties and complications that should be considered during surgery and follow up.

关键词： complicated cataract trematode granulomatous uveitis surgical outcomes

Efficacy of octreotide in the prevention of complications after pancreaticoduodenectomy in patients with soft pancreas and non-dilated pancreatic duct: A prospective randomized trial

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Hepatobiliary & Pancreatic Diseases International 2018年第1期17卷 59-63页

作者： Ayman El Nakeeb ahmed El Gawalby mahmoud A.Ali ahmed Shehta Hosam Hamed Mohamed El Refea ahmed Moneer ahmed Abd El Rafee Gastroenterology Surgical Center Mansoura University

Background: The efficacy of octreotide to prevent postoperative pancreatic fistula(POPF) of pancreaticoduodenectomy(PD) is still controversial. This study aimed to evaluate the effect of postoperative use of octreotide on the outcomes after ***: This is a prospective randomized controlled trial for postoperative use of octreotide in patients undergoing PD. Patients with soft pancreas and pancreatic duct < 3 mm were randomized to 2 *** I did not receive postoperative octreotide. Group II received postoperative octreotide. The primary end of the study is to compare the rate of ***: A total of 104 patients were included in the study and were divided into two randomized *** were no significant difference in overall complications and its severity. POPF occurred in 11 patients(21.2%) in group I and 10(19.2%) in group II, without statistical significance(P = 0.807). Also, there was no significant differences between both groups regarding the incidence of biliary leakage(P = 0.083), delayed gastric emptying(P = 0.472), and early postoperative mortality(P = 0.727).Conclusions: Octreotide did not reduce postoperative morbidities, reoperation and mortality rate. Also, it did not affect the incidence of POPF and its clinically relevant variants.

关键词： Pancreaticoduodenectomy Postoperative pancreatic fistula Octreotide Periampullary tumor