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Chinese Journal of Traumatology 2019年第5期22卷 304-307页

作者： Nikolay m.Kliushin Paul Stepanenko waleed A.mekki Bone Infection Clinic Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics6M.Ulianovast.Kurgan 640014Russian Federation

Treatment of infected forearm nonunion and defects represents a difficult task for the operating *** methods like composite and vascularized fibular grafts and the induced membranes filled with cancellous autografts or the masquelet technique have been reported to be useful and suc-cessful,but sometimes it is difficult to predict the outcome and cannot address simultaneous deformities or the need to apply gradual distraction for reduction of a chronically dislocated radial *** technique has an answer for such *** report a 43 years old man with infected ulnar defect and dislocated radial head as a result of infected monteggia fracture:the patient was successfully treated by Ilizarov bone transport after failed attempts by bone spacer and fibular graft.

关键词： monteggia's fracture Forearm defects Ilizarov technique Distraction histogenesis Bone transport

Blood compatible heteratom-doped carbon dots for bio-imaging of human umbilical vein endothelial cells

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Chinese Chemical Letters 2020年第3期31卷 769-773页

作者： Jian Zhong Xinmian Chen miaoran Zhang Chaoxin Xiao Lulu Cai waleed Ali Khan Kaixuan Yu Jiayi Cui Lin He Personalized Drug Therapy Key Laboratory of Sichuan Province Department of PharmacySichuan Provincial People's HospitalSchool of MedicineUniversity of Electronic Science and Technology of ChinaChengdu 610072China State Key Laboratory of Heavy Oil Processing Beijing Key Laboratory of Biogas Upgrading UtilizationCollege of New Energy and MaterialsChina University of Petroleum(Beijing)Beijing 102249China State Key Laboratory of Biotherapy and Cancer West China HospitalSichuan University and Collaborative Innovation CenterChengdu 610041China

Carbon dots have unique advantages in biological applications owing to their excellent optical prope ***,the biosafety evaluation of carbon dots has limitations owing to cytotoxicity in vitro,and the re is little pre-safety evaluation before in vivo and clinical *** the carbon dots are or not suitable for applications in vivo,evaluation analysis can be made based on hemolysis and changes in erythrocyte *** this work,a green fluorescent N,S-doped carbon dots(N,S-CDs)were obtained by hydrothermal method,tobias acid,and m-phenylenediamine as precursors.N,S-CDs not only possessed excellent dispersibility,uniform particle size,high quantum yield(37.2%)and stable photoluminescence property but also retain their photostability and stro ng fluorescence intensity in the acid/alkaline solutions,different ionic strengths(NaCl)and under 365 nm UV *** r,the N,S-CDs displayed low cytotoxicity and high cellular uptake efficiency in human umbilical vein endothelial cells(HUVEC)and excellent blood compatibility to the *** is foreseeable that N,S-CDs could be further studied as a promising biological imaging agent in vivo.

关键词： Carbon dots Fluorescent Cell imaging Erythrocyte Blood compatibility

Enhanced Fingerprinting Based Indoor Positioning Using machine Learning

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Computers, materials & Continua 2021年第11期69卷 1631-1652页

作者： muhammad waleed Pasha mir Yasir Umair Alina mirza Faizan Rao Abdul Wakeel Safia Akram Fazli Subhan Wazir Zada Khan Department of Electrical Engineering National University of Sciences and TechnologyIslamabad44000Pakistan Department of Computer Engineering National University of Modern Languages(NUML)Islamabad44000Pakistan Faculty of Computing Capital University of Science and TechnologyIslamabad44000Pakistan

Due to the inability of the Global Positioning System(GPS)signals to penetrate through surfaces like roofs,walls,and other objects in indoor environments,numerous alternative methods for user positioning have been *** those,the Wi-Fi fingerprinting method has gained considerable interest in Indoor Positioning Systems(IPS)as the need for lineof-sight measurements is minimal,and it achieves better efficiency in even complex indoor *** and online are the two phases of the fingerprinting *** researchers have highlighted the problems in the offline phase as it deals with huge datasets and validation of Fingerprints without pre-processing of data becomes a *** learning is used for the model training in the offline phase while the locations are estimated in the online *** researchers have considered the concerns in the offline phase as it deals with huge datasets and validation of Fingerprints becomes an *** learning algorithms are a natural solution for winnowing through large datasets and determining the significant fragments of information for localization,creating precise models to predict an indoor *** training sets are a key for obtaining better results in machine learning ***,an existing WLAN fingerprinting-based multistory building location database has been used with 21049 samples including 19938 training and 1111 testing *** proposed model consists of mean and median filtering as pre-processing techniques applied to the database for enhancing the accuracy by mitigating the impact of environmental dispersion and investigated machine learning algorithms(kNN,WkNN,FSkNN,and SVm)for estimating the *** proposed SVm with median filtering algorithm gives a reduced mean positioning error of 0.7959 m and an improved efficiency of 92.84%as compared to all variants of the proposed method for 108703 m^(2) area.

关键词： Indoor positioning system fingerprinting received signal strength indicator mean position error support vector machine

赛德西港用于船舶减排的陆上可再生能源供电评估

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哈尔滨工程大学学报（英文版） 2024年第2期23卷 506-524页

作者： merna makram Ameen m.Bassam Adel A.Tawfik waleed Yehia Naval Architecture and marine Eng.Dept. Faculty of EngineeringPort Said UniversityPort Fuad 42526Egypt

Air pollution from shipping is becoming a critical issue,particularly in dense hub port *** proposed solution to minimize ship-based emissions at ports is the implementation of an Onshore Power Supply(OPS)*** allows ships to shut off their auxiliary engines and instead connect to the port *** there have been numerous studies conducted on ports in Europe and the United States,little research has been done on Egyptian ***,this paper aims to investigate the feasibility of implementing OPS at Port Said West Port in Egypt,aligning with Egypt Vision 2030’s goals for addressing climate *** research primarily focuses on analyzing data collected from calling ships to generate socio-economic and cost-effectiveness analyses of *** further enhance the environmental benefits of OPS,the paper proposes the use of solar energy as the OPS electricity *** findings of the study revealed that by relying on the national grid,emissions can be reduced by 28%.moreover,it is predicted that this reduction could reach 100%if electricity generation is solely based on solar ***,the economic analysis demonstrates promising profitability,with a payback period of approximately two years.

关键词： Onshore power supply Port sustainability Shipping emissions inventory Solar energy Photovoltaic systems

Subrectal and Subcutaneous Wound Infiltration with Bupivacaine versus Pethidine for Post Cesarean Section Pain Relief: Randomized Controlled Trial

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Open Journal of Obstetrics and Gynecology 2018年第11期8卷 1071-1083页

作者： waleed m. Khalaf mohamed Elmandouh mohamed Ibrahim Sarah Safwat Department of Obstetrics and Gynecology Faculty of Medicine Ain Shams University Cairo Egypt

Background: Cesarean section (CS), one of the most common major operative procedures, performed all over the world. Incisional infiltration with local anesthetics is a simple, cheap and effective mean of providing good analgesia for surgical operations without any major side effects & allowing early patients’ mobilization & postoperative recovery, so the purpose of study is to compare between the effect of wound infiltration with bupivacaine versus pethidine for post cesarean section pain relief. Patients and methods: A randomized controlled trial (RCT) was conducted in Ain Shams University maternity hospital in the period from August 2016 and January 2017. 100 full term pregnant females randomized into two groups: Group A (50 patients) Bupivacaine group: Subcutaneous and subrectal infiltration with 10 ml 0.25% Bupivacaine (2.5 mg/ml) diluted in 10 ml normal saline before closure of the wound was done;Group B (50 patients) Pethidine group: Subcutaneous and subrectal infiltration with 1 ml pethidine (50 mg/ml) diluted in 19 ml normal saline before closure of the wound was done. All patients had cesarean section under spinal anesthesia. Study outcome measures post-operative pain scores using visual analogue scale, post-operative analgesia requirement time to first rescue analgesia, onset of mobilization, side effect of local anesthetic, wound infection (after one week). It was registered on clinical *** with ID: NCT03652116. Results: Visual analogue scale values differ significantly between pethidine group and that of bupivacaine at rest and on coughing at 4, 8, 12, 24 hours & analgesic consumption (P value st time request analgesia per minute comparing group A to group B (P value 0.001). There is no significant difference between bupivacaine and pethidine regarding time of ambulation, side effects or complications. Conclusion: Infiltration of the wound of cesarean section with pethidine gives effective analgesia for several hours as compared to Bupivacaine.

关键词： Analgesia Ambulation Wound Infiltration Pethidine Bupivacaine

Effects of moringa oleifera aqueous extract on the growth performance,blood characteristics,and histological features of gills and livers in Nile tilapia

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Aquaculture and Fisheries 2024年第1期9卷 85-92页

作者： mahamoud A.Emam Ramy m.Shourbela waleed N.El-Hawarry Seham Y.Abo-Kora Fatma Abdel-monem Gad Ashraf m.Abd El-latif mahmoud A.O.Dawood Histology Department Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Department of Animal Husbandry and Animal Wealth Development Faculty of Veterinary MedicineAlexandria UniversityAlexandria22758Egypt Pharmacology Department Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Clinical Pathology Department Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Department of Aquatic Animal Diseases and management Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Animal Production Department Faculty of AgricultureKafrelsheikh UniversityKafr El-Sheikh33511Egypt The Center for Applied Research on the Environment and Sustainability The American University in CairoCairo11835Egypt

moringa oleifera is well known as a highly nutritious plant and a water purifier in fish *** fish has many impressive qualities making them very suitable for ***,this study aimed to evaluate the effect of supplementation of moringa oleifera aqueous extract(mOAE)at varying concentrations(0,100,200,and 400 mg/kg diet for 90 days)on growth performance,hematological,and some biochemical parameters of Nile ***,histological changes and immunohistochemical expression of caspase 3 in gills and livers were *** enhancements(Pmoglobin,packed cell volume,white blood cells,and total serum protein were observed in fish fed 200 mg mOAE/kg diet compared with other ***,a significant reduction(Pmg mOAE/kg diet revealed disturbance in the corresponding *** histological degenerative changes were detected in the gills and liver of fish fed 400 mg mOAE/kg *** comparison,fish fed 200 mg mOAE/kg diet showed the best histo-architectures of these organs compared with other *** immune expressions of caspase 3 were determined where gills and liver of fish fed 400 mg mOAE/kg diet revealed extensive number of positive caspase 3 cells indicating severe apoptotic ***,a dietary mOAE at 200 mg/kg diet is recommended to improve the growth performance,hematological parameters,liver and kidney functions in Nile ***,caution must be considered when using mOAE at a concentration over 200 mg/kg diet.

关键词： Growth performance Liver Gills moringa oleifera Nile tilapia

Severity Based Light-Weight Encryption model for Secure medical Information System

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Computers, materials & Continua 2023年第3期74卷 5691-5704页

作者： Firas Abedi Subhi R.m.Zeebaree Zainab Salih Ageed Hayder m.A.Ghanimi Ahmed Alkhayyat mohammed A.m.Sadeeq Sarmad Nozad mahmood Ali S.Abosinnee Zahraa H.Kareem Ali Hashim Abbas waleed Khaild Al-Azzawi mustafa musa Jaber mohammed Dauwed Department of mathematics College of EducationAl-Zahraa University for WomenKarbalaIraq Energy Eng.Department Technical College of EngineeringDuhok Polytechnic UniversityDuhokIraq Computer Science Department College of ScienceNawroz UniversityDuhokIraq Biomedical Engineering Department College of EngineeringUniversity of Warith Al-AnbiyaaKarbalaIraq College of Technical Engineering The Islamic UniversityNajafIraq ITm Department Technical College of AdministrationDuhok Polytechnic UniversityDuhokIraq Computer Technology Engineering College of Engineering TechnologyAl-Kitab UniversityIraq Altoosi University College NajafIraq Department of medical Instrumentation Techniques Engineering Al-Mustaqbal University CollegeHillah51001Iraq College of Information Technology Imam Ja’afar Al-Sadiq UniversityAl-Muthanna66002Iraq Department of medical Instruments Engineering Techniques Al-Farahidi UniversityBagdadIraq Department of medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq Department of medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq Department of medical Instrumentations Techniques Engineering Dijlah University CollegeBaghdadIraq

As the amount of medical images transmitted over networks and kept on online servers continues to rise,the need to protect those images digitally is becoming increasingly ***,due to the massive amounts of multimedia and medical pictures being exchanged,low computational complexity techniques have been *** commonly used algorithms offer very little security and require a great deal of communication,all of which add to the high processing costs associated with using ***,a deep learning classifier is used to classify records according to the degree of concealment they *** images that aren’t needed can be saved by using this method,which cuts down on security *** is one of the most effective methods for protecting medical images after this *** and dispersion are two fundamental encryption processes.A new encryption algorithm for very sensitive data is developed in this *** splitting with image blocks is nowdeveloped by using Zigzag patterns,rotation of the image blocks,and random permutation for scrambling the *** that,this research suggests a Region of Interest(ROI)technique based on selective picture *** the first step,we use an active contour picture segmentation to separate the ROI from the Region of Background(ROB).Permutation and diffusion are then carried out using a Hilbert curve and a Skew Tent *** all of the blocks have been encrypted,they are combined to create encrypted *** investigational analysis is carried out to test the competence of the projected ideal with existing techniques.

关键词： Deep learning encryption medical images scrambling security skew tent map rotation zigzag pattern

Two Very Accurate and Efficient methods for Solving Time-Dependent Problems

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Applied mathematics 2018年第11期9卷 1270-1280页

作者： mohamed El-Gamel waleed Adel m. S. El-Azab Department of mathematical Sciences Faculty of Engineering Mansoura University Mansoura Egypt

In this paper, collocation method based on Bernoulli and Galerkin method based on wavelet are proposed for solving nonhomogeneous heat and wave equations. The two methods have the linear systems solved by suitable sol... 详细信息

关键词： Wavelet Galerkin Daubechies Bernoulli Collocation

Effect of metformin on Endometrial Thickness and Subendometrial Flow Patterns in Anovulatory Patients with Polycystic Ovarian Syndrome

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Open Journal of Obstetrics and Gynecology 2018年第14期8卷 1465-1475页

作者： waleed m. Khalaf Sherif A. Akl Rania R. Ramadan Obstetrics and Gynecology Department Faculty of Medicine Ain Shams University Cairo Egypt misr University for Sciences and Technology Giza Egypt

Background: Polycystic ovarian syndrome (PCOS) is considered the commonest endocrinological disorder affecting reproductive aged women. PCOS compromises fertility through various pathways. These pathways include hyperandrogenism, insulin resistance and impedance of the uterine and endometrial blood flow. metformin improves the blood flow to the endometrium. It acts by reducing androgen level and correction of insulin resistance. Endometrial vascular indices were evaluated in this study to evaluate endometrial receptivity in anovulatory patients with PCOS. Aim of the Work: To evaluate the outcome of metformin administration in anovulatory patients with PCOS and its effect on the endometrium. This included its role in ovulation and improvement of pregnancy rates. Patients and methods: This study included 85 patients from Ain Shams University outpatient infertility clinics from 1st of January, 2018 till 30th of June, 2018. We investigated these patients before treatment with ultrasound on day 14, 21. We evaluated endometrial thickness, uterine artery flow pattern, endometrial and subendometrial flow patterns. The patients received metformin 500 mg three times per day for three months. After this duration, we reevaluated them by ultrasound at days 14, 21. Results: metformin therapy resulted in a significant increase of endometrial thickness and had a significant decrease on uterine, endometrial and subendometrial resistance index (R.I) and pulsatility index (P.I) at day 14, 21 compared to pre-treatment values indicating better blood flow. Conclusion: metformin therapy resulted in improvement of endometrial flow patterns. Also, it resulted in increase in endometrial thickness and improvement of uterine artery flow.

关键词： Endometrial Thickness Subendometrial Flow Patterns Anovulatory PCOS metformin

Particle-mediated Histotripsy for the Targeted Treatment of Intraluminal Biofilms in Catheter-Based medical Devices

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Biomedical Engineering Frontiers 2022年第1期3卷 367-380页

作者： Christopher Childers Connor Edsall Isabelle mehochko waleed mustafa Yasemin Yuksel Durmaz Alexander L.Klibanov Jayasimha Rao Eli Vlaisavljevich Virginia Tech Carilion School of medicine USA Department of Biomedical Engineering and mechanics Virginia TechUSA Department of Biomedical Engineering Istanbul Medipol UniversityTurkey Division of Cardiovascular medicine(Department of medicine)and Robert m.Berne Cardiovascular Research Center at University of Virginia School of medicine University of VirginiaUSA Department of medicine Division of Infectious DiseasesVirginia Tech Carilion School of MedicineUSA ICTAS Center for Engineered Health Virginia Polytechnic Institute and State UniversityUSA

*** paper is an initial work towards developing particle-mediated histotripsy(PmH)as a novel method of treating catheter-based medical device(CBmD)intraluminal *** *** commonly become infected with bacterial biofilms leading to medical device failure,infection,and adverse patient *** is a noninvasive focused ultrasound ablation method that was recently proposed as a novel method to remove intraluminal ***,we explore the potential of combining histotripsy with acoustically active particles to develop a PmH approach that can noninvasively remove biofilms without the need for high acoustic pressures or real-time image guidance for *** cavitation thresholds in catheters containing either gas-filled microbubbles(mBs)or fluid-filled nanocones(NCs)were *** ability of these particles to sustain cavitation over multiple ultrasound pulses was tested after a series of histotripsy ***,the ability of PmH to generate selective intraluminal cavitation without generating extraluminal cavitation was ***,the biofilm ablation and bactericidal capabilities of PmH were tested using both mBs and *** significantly reduced the histotripsy cavitation threshold,allowing for selective luminal cavitation for both mBs and *** further showed PmH successfully removed intraluminal biofilms in Tygon ***,results from bactericidal experiments showed minimal reduction in bacteria *** results of this study demonstrate the potential for PmH to provide a new modality for removing bacterial biofilms from CBmDs and suggest that additional work is warranted to develop histotripsy and PmH for treatment of CBmD intraluminal biofilms.

关键词： cavitation remove filled