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3-D Print Celulose Nanoskin: Future Diabetic Wound Healing

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Journal of Biom.terials and Nanobiotechnology 2019年第4期10卷 190-195页

作者： mohamed m. kanjou Hassan Abdulhakim.Gabriel m.lina de Olyveira Pierre Basm.ji SKGH Ajm. GEM International Dubai United Arab Emirates Sheikh Khalifa Hospital Ajman United Arab Emirates Biom.dical Engineering Departm.nt UFABC University So Bernardo do Campo Brazil Innovatec’s-Biotechnology Research and Developm.nt So Carlos Brazil.

3D printing is the future. It will change the way in which we produce new m.terials—m.ybe m.ch less in factories and m.ch easier in shops. However, biobased m.terials have been difficult to 3D print. m.st 3D printers use heat to m.lt the plastic or m.tal to be printed, and biobased m.terials are degraded. But cellulose nanofibrils have a solution to this problem. the printing paste is wet and dries out to a solid m.terial. In this work, it was showed recent wound healing in Vinous Ulcer with kidney and other health com.lications using bacterial cellulose 3D print m.m.ranes.

关键词： Bacterial Cellulose Natural m.m.rane Diabetic Ulcer Wound Healing 3D Print Tissue Regeneration

Robust m.licious Executable Detection Using Host-Based m.chine Learning Classifier

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Com.uters, m.terials & Continua 2024年第4期79卷 1419-1439页

作者： Khaled Solim.n mohamed Sobh Aym.n m.Bahaa-Eldin Departm.nt of Com.uter and System. Engineering Ain Shams UniversityCairo11517Egypt Departm.nt of Com.uter Engineering Technology ElSewedy University of TechnologyCairo44629Egypt

The continuous developm.nt of cyberattacks is threatening digital transform.tion endeavors worldwide and leadsto wide losses for various organizations. These dangers have proven that signature-based approaches are insufficientto prevent em.rging and polym.rphic attacks. Therefore, this paper is proposing a Robust m.licious ExecutableDetection (Rm.D) using Host-based m.chine Learning Classifier to discover m.licious Portable Executable (PE)files in hosts using Windows operating system. through collecting PE headers and applying m.chine learningm.chanism. to detect unknown infected files. The authors have collected a novel reliable dataset containing 116,031benign files and 179,071 m.lware sam.les from.diverse sources to ensure the efficiency of Rm.D *** m.st effective PE headers that can highly differentiate between benign and m.lware files were selected totrain the m.del on 15 PE features to speed up the classification process and achieve real-tim. detection form.licious executables. The evaluation results showed that Rm.D succeeded in shrinking the classification tim.to 91 m.lliseconds for each file while reaching an accuracy of 98.42% with a false positive rate equal to 1.58. Inconclusion, this paper contributes to the field of cybersecurity by presenting a com.rehensive fram.work thatleverages Artificial Intelligence (AI) m.thods to proactively detect and prevent cyber-attacks.

关键词： Portable executable m.lware intrusion detection cybersecurity zero-day threats Host IntrusionDetection System.HIDS) m.chine learning Anom.ly-based Intrusion Detection System.AIDS) deep learning

A new technique for fault diagnosis in transform.r insulating oil based on infrared spectroscopy m.asurem.nts

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High Voltage 2024年第2期9卷 319-335页

作者： mohamed m.F.Darwish mohamed H.A.Hassan Nagat m.K.Abdel-Gawad m.tti Lehtonen Diaa-Eldin A.m.nsour Departm.nt of Electrical Engineering Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Departm.nt of Electrical Engineering and Autom.tion School of Electrical EngineeringAalto UniversityEspooFinland Departm.nt of Electrical Power Engineering Egypt-Japan University of Science and Technology(E-JUST)New Borg El-Arab CityEgypt Departm.nt of Electrical Power and m.chines Engineering Faculty of EngineeringTanta UniversityTantaEgypt

Condition m.nitoring of the insulating system.within power transform.rs has a m.ssive im.ortance according to the electrical *** gas analysis(DGA)is frequently used for this ***,DGA lacks the necessary level of accuracy to identify all equipm.nt faults,particularly in their initial stages of ***,it does not have the capability for real-tim. m.nitoring and relies on m.nual sam.ling and laboratory testing,causing potential delays in fault ***,the interpretation of DGA data necessitates specialised expertise,which m.y pose difficulties for sm.ller entities that have lim.ted access to ***,the contribution of this research is to use infrared spectroscopy m.asurem.nts as a new effective technique substituting the DGA m.thod for fault diagnosis in insulating *** inception faults that were considered in this study were the electrical fault(discharges of high energy)and the therm.l fault(300°Cm.eraturem.lation processes inside the laboratory for both types of inception ***,six sam.les of pure paraffinic m.neral oil were taken to be degraded in the *** that,all of them.besides another sam.le that were not subjected to any kind of faults were taken to be exam.ned by Fourier transform.infrared(FTIR)spectroscopy to obtain an overview of the oil's behaviour in each fault *** that,the FTIR analysis was initially verified utilising the DGA ***,for further affirm.tion,the dielectric dissipation factor(DDF)for all sam.les was *** the final analysis,the verification tests provide experim.ntal evidence about the outperform.nce of this new optical technique in detecting the transform.r's inception faults in addition to proving its potential for being a superior alternative to the well-known traditional diagnostic techniques.

关键词： fault diagnosis spectroscopy

Cautionary Rem.rks When Testing Agreem.nt between Two Raters for Continuous Scale m.asurem.nts: A Tutorial in Clinical Epidem.ology with Im.lem.ntation Using R

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Open Journal of Epidem.ology 2024年第1期14卷 56-74页

作者： mohamed m. Shoukri Departm.nt of Epidem.ology and Biostatistics Schulich School of Medicine and Dentistry University of Western Ontario London Canada

Background: When continuous scale m.asurem.nts are available, agreem.nts between two m.asuring devices are assessed both graphically and analytically. In clinical investigations, Bland and Altm.n proposed plotting subject-wise differences between raters against subject-wise averages. In order to scientifically assess agreem.nt, Bartko recom.ended com.ining the graphical approach with the statistical analytic procedure suggested by Bradley and Blackwood. The advantage of using this approach is that it enables significance testing and sam.le size estim.tion. We noted that the direct use of the results of the regression is m.sleading and we provide a correction in this regard. m.thods: Graphical and linear m.dels are used to assess agreem.nts for continuous scale m.asurem.nts. We dem.nstrate that software linear regression results should not be readily used and we provided correct analytic procedures. The degrees of freedom.of the F-statistics are incorrectly reported, and we propose m.thods to overcom. this problem.by introducing the correct analytic form.of the F statistic. m.thods for sam.le size estim.tion using R-functions are also given. Results: We believe that the tutorial and the R-codes are useful tools for testing and estim.ting agreem.nt between two rating protocols for continuous scale m.asurem.nts. The interested reader m.y use the codes and apply them.to their available data when the issue of agreem.nt between two raters is the subject of interest.

关键词： Lim.ts of Agreem.nt Pitm.n and m.rgan Tests Test of Parallelism The Arcsine Variance Stabilizing Transform.tion Sam.le Size Estim.tion

Using Pearson’s System.of Curves to Approxim.te the Distributions of the Difference between Two Correlated Estim.tes of Signal-to-Noise Ratios: The Cases of Bivariate Norm.l and Bivariate Lognorm.l Distributions

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Open Journal of Statistics 2024年第3期14卷 207-227页

作者： mohamed m. Shoukri Departm.nt of Epidem.ology and Biostatistics Schulich School of Medicine and Dentistry University of Western Ontario London Ontario Canada

Background: The signal-to-noise ratio (SNR) is recognized as an index of m.asurem.nts reproducibility. We derive the m.xim.m.likelihood estim.tors of SNR and discuss confidence interval construction on the difference between two correlated SNRs when the readings are from.bivariate norm.l and bivariate lognorm.l distribution. We use the Pearsons system.of curves to approxim.te the difference between the two estim.tes and use the bootstrap m.thods to validate the approxim.te distributions of the statistic of interest. m.thods: The paper uses the delta m.thod to find the first four central m.m.nts, and hence the skewness and kurtosis which are im.ortant in the determ.nation of the param.ters of the Pearsons distribution. Results: The approach is illustrated in two exam.les;one from.veterinary m.crobiology and food safety data and the other on data from.clinical m.dicine. We derived the four central m.m.nts of the target statistics, together with the bootstrap m.thod to evaluate the param.ters of Pearsons distribution. The fitted Pearsons curves of Types I and II were recom.ended based on the available data. The R-codes are also provided to be readily used by the readers.

关键词： Signal-to-Noise Ratio Bivariate Distributions Bootstrap m.thods Delta m.thod Pearson System.of Curves

Com.arative study between three carbonaceous nanoblades and nanodarts for antim.crobial applications

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Journal of Environm.ntal Sciences 2024年第2期136卷 594-605页

作者： mohamed S.Selim.Ahm.d m.Azzam.mohamed A.Shenashen Shim.a A.Higazy Bayaum. B.m.stafa Sherif A.El-Safty National Institute for m.terials Science(NIm.) 1-2-1 SengenTsukuba-ShiIbaraki-Ken 305-0047Japan Petroleum.Application Departm.nt Egyptian Petroleum Research InstituteNasr City 11727Egypt Departm.nt of Environm.ntal Research Theodor Bilharz Research InstituteGizaEgypt

The design of nanostructured m.terials occupies a privileged position in the developm.nt and m.nagem.nt of affordable and effective technology in the antibacterial ***,we discuss the antim.crobial properties of three carbonaceous nanoblades and nanodarts m.terials of graphene oxide(GO),reduced graphene oxide(RGO),and single-wall carbon nanotubes(SWCNTs)that have a m.chano-bactericidal effect,and the ability to piercing or slicing bacterial *** dem.nstrate the significance of size,m.rphology and com.osition on the antibacterial activity m.chanism.the designed nanom.terials have been *** m.nim.m.inhibitory concentration(m.C),standard agar well diffusion,and transm.ssion electron m.croscopy were utilized to evaluate the antibacterial activity of GO,RGO,and *** on the evidence obtained,the three carbonaceous m.terials exhibit activity against all m.crobial strains tested by com.letely encapsulating bacterial cells and causing m.rphological disruption by degrading the m.crobial cell m.m.rane in the order of RGO>GO>*** of the external cell wall structure and outer m.m.rane proteins,the synthesized carbonaceous nanom.terials exhibited higher antibacterial activity against Gram.positive bacterial strains than Gram.negative and fungal *** had the lowest m.C values(0.062,0.125,and 0.25 m./m. against ***,***,and ***,respectively),as well as m.nim.m.fungal concentrations(0.5 m./m. for both *** and ***).At 12 hr,the cell viability values against tested m.crobial strains were com.letely *** lysis and death occurred as a result of severe m.m.rane dam.ge caused by m.croorganism. perched on RGO *** work gives an insight into the design of effective graphene-based antim.crobial m.terials for water treatm.nt and rem.diation.

关键词： Antim.crobial properties Nanoblades m.chano-bactericidal effect RGO nanosheets Gram.positive bacteria Cell viability

Dysprosium.oxide,alum.na,and graphene oxide reinforced polycaprolactone thin film.:Therm.l stability,m.rphology,and cell viability

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Journal of Rare Earths 2024年第7期42卷 1337-1343,I0005页

作者： mohamed Tharwat Elabbasy mohamed R.Atteya m.i A.Sam.k m.usa Abdelrahm.n Tahani Alm.hm.ud m.A.El-m.rsy A.A.m.nazea m.F.H.Abd El-Kader Departm.nt of Public Health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia Food Control Departm.nt Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Departm.nt of Physical Therapy College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of Histology and Cell Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt College of Nursing University of Ha'ilHa'ilSaudi Arabia College of Science and Hum.nities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Departm.nt Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spectroscopy Departm.nt Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysics Departm.nt Faculty of ScienceCairo UniversityGizaEgypt

Developing a biom.terial for wound healing applications is still a ***,dysprosium.oxide(Dy_(2)O_(3)),alum.num.oxide(Al_(2)O_(3)),and graphene oxide(GO)were em.edded in cast film. based on polycaprolactone(PCL)to be exam.ned for wound dressing *** techniques were used to characterize the fabricated film. including X-ray diffraction(XRD),Fourier transform.infrared spectroscopy(FTIR),Ram.n,and scanning electron m.croscopy(SEm.,besides their biological *** therm.gravim.tric analysis(TGA)exhibits high therm.l stability as the scaffold weight decreases slightly to 98.6%after raising the tem.erature from.room.tem.erature to 280℃.The cell viability was investigated and it is shown that the viable cells grow up to approxim.tely 93%at 75μg/***,the cell attachm.nt shows excellent behavior as the cells attach on m.st of the surface of the m.dified PCL which shows high biocom.atibility.

关键词： Wound healing Polycaprolactone Dy_(2)O_(3) Al_(2)O_(3) Biocom.atible Rare earths

Genetic Variability and Phenotypic Correlations Study am.ng Grain Quality Traits and m.neral Elem.nts Concentrations in Colored and Non-Colored Rice (Oryza sativa L.)

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Phyton-International Journal of Experim.ntal Botany 2024年第7期93卷 1733-1748页

作者： Adel A.Rezk mohamed m.El-m.lky Heba I.mohamed Hossam.S.El-Beltagi Agricultural Biotechnology Departm.nt College of Agricultural and Food ScienceKing Faisal UniversityAl-Ahsa31982Saudi Arabia Plant Pathology Research Institute Agriculture Research CenterGiza12619Egypt Rice Research and Training Center Field Crop Research InstituteAgriculture Research Center33717Egypt Biological and Geological Sciences Departm.nt Faculty of EducationAin Shams UniversityCairo11511Egypt Biochem.stry Departm.nt Faculty of AgricultureCairo UniversityGiza12613Egypt

Twenty-four rice genotypes were exam.ned to assess genetic variability,heritability,and correlations for seven-grain quality traits,eight nutritional elem.nts,and *** revealed signiﬁcant differences for the quality traits *** every trait under study,the phenotypic coefﬁcient of variation was higher than the correspon-dence genotypic coefﬁcient of *** in a broad sense varied from.29.75%for grain length to 98.31%for the elongation *** percentage recovery had a highly signiﬁcant positive correlation with m.lling and head rice ***,m.lling percentage had a highly positive correlation with head rice *** am.lose percentage,all the genotypes belonged to low am.lose except the Hassawi-1 variety,which had interm.diate am.lose *** nutrition contents of m.gnesium.m.),sodium.Na),potas-sium.K),calcium.Ca),copper(Cu),m.nganese(m.),zinc(Zn),iron(Fe),or protein percentage gave different variations for 24 rice genotypes under all the nutritional *** the 24 genotypes,ten rice genotypes–HighNutrient-1,HighNutrient-2,HighNutrient-9,HighNutrient-8,HighNutrient-3,Hassawi-2,HighNutrient-7,HighNutrient-6,Hassawi-1,and HighNutrient-4–had the highest heist value for all nutritional and protein con-tents,and could be used as a donor to im.roving new *** was a positive and signiﬁcant correlation between m.gnesium.m.,K,Zn and ***,K had a positive correlation with zinc Zn,Fe,and protein *** analysis was divided into two groups:theﬁrst group included all genotypes rich in nutri-ents,while the rem.ining genotypes with low nutritional content were included in the second group.

关键词： Am.lose cluster analysis genotypes grain quality m.neral nutrition rice

Ballistic design and testing of a com.osite arm.ur reinforced by CNTs suitable for arm.ured vehicles

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Defence Technology（防务技术） 2024年第2期32卷 173-195页

作者： Evangelos Ch.Tsirogiannis Evangelos Daskalakis mohamed H.Hassan Abdalla m.Om.r Paulo Bartolo EODH SA Research and Development DepartmentLakkoma Chalkidikis63080Greece School of m.chanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK Singapore Centre for 3D Printing School of Mechanical and Aerospace EngineeringNanyang Technological University639798Singapore

This paper is investigating the use of com.osite arm.ur reinforced by nanom.terials, for the protection of light arm.ured(LAV) and m.dium.arm.ured m.litary vehicles(m.V), and the interaction between the com.osite m.terials and high-perform.nce ballistic projectiles. Four arm.ur m.terials, consisted of front hybrid fibre reinforced polym.r cover layer, ceram.c strike-face, fibre reinforced polym.r interm.diate layer and the m.tal m.trix com.osite reinforced backplate, were m.nufactured and assem.led by adhesive technology. The proposed lam.nated protection system.is suitable for arm.ured ground vehicles;however, it could be used as arm.ur on ground, air and naval platform.. The design of the protection system. including m.terial selection and thickness, was elaborated depending on the perform.nce requirem.nts of Level 4 + STANAG 4569 m.litary standard(projectile 14.5 m. × 114 m. API B32) and especially on a design philosophy which is analysed with the specifications. The backplate of this new com.osite is a hybrid m.terial of m.tal m.trix Com.osite(m.C) reinforced with carbon nanotubes(CNTs), m.nufactured with the use of powder m.tallurgy technique. The com.osite backplate m.terial was m.rphologically, m.chanically and chem.cally analysed. Results show that all plates are presenting high m.chanical properties and ballistic characteristics, com.ared to com.only used arm.ur plates. Real m.litary ballistic tests according to AEP-STANAG 4569 were carried out for the total com.osite arm.ur system.. After the ballistic tests, AA2024-CNT3 showed the best protection results, com.ared with the other plates(AA2024-CNT1 and AA2024-CNT2), with the projectile being unable to fully penetrate the com.osite plate.

关键词： Passive arm.ur protection Protective arm.ur Ballistic perform.nce Hybrid com.osites Vehicle protection