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Improving th. Transmission Security of Vein Images Using a Bezier Curve and Long Sh.rt-Term Memory

Computers, Materials & Continua 2024年第6期79卷 4825-4844页

作者： ahmed h.Alh.deth. Ik.am Smaoui ahmed Fak.1}ak.1}Saad M.Darwish Computer Science and Sch.ol of Electronics and Telecommunications University of SfaxSfax3029Tunisia LETI Laboratory University of SfaxSfax3029Tunisia Digital Research.Center of Sfax Technopark of SfaxSfax3029Tunisia Department of Information Tech.ology Institute of Graduate Studies and ResearchAlexandria UniversityAlexandriaEgypt

Th. act of transmitting ph.tos via th. Internet h.s become a routine and significant *** th. security measures to safeguard th.se images from counterfeiting and modifications is a critical domain th.t can still be furth.r *** study presents a system th.t employs a range of approach.s and algorith.s to ensure th. security of transmitted venous *** main goal of th.s work.is to create a very effective system for compressing individual biometrics in order to improve th. overall accuracy and security of digital ph.tograph. by means of image *** paper introduces a content-based image auth.ntication mech.nism th.t is suitable for usage across an untrusted network.and resistant to data loss during *** employing scale attributes and a k.y-dependent parametric Long Sh.rt-Term Memory(LSTM),it is feasible to improve th. resilience of digital signatures against image deterioration and strength.n th.ir security against malicious ***,th. successful implementation of transmitting biometric data in a compressed format over a wireless network.h.s been *** applications involving th. transmission and sh.ring of images across a *** suggested tech.ique utilizes th. scalability of a structural digital signature to attain a satisfactory equilibrium between security and picture *** effective adaptive compression strategy was created to length.n th. overall lifetime of th. network.by sh.ring th. processing of *** sch.me ensures a large reduction in computational and energy requirements wh.le minimizing image quality *** approach.employs multi-scale ch.racteristics to improve th. resistance of signatures against image *** proposed system attained a Gaussian noise value of 98%and a rotation accuracy surpassing 99%.

关键词： Image transmission image compression text h.ding Bezier curve h.stogram of Oriented Gradients(h.G) LSTM image enh.ncement Gaussian noise rotation

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Evaluating mech.nism of banana pseudo-stem retting using seawater:A cost-effective surface pre-treatment approach

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Journal of Bioresources and Bioproducts 2024年第3期9卷 322-335页

作者： Prince h.tor ahmed h.h.ssanin Osbert Ak.twijuk. Moh.med A.h.Gepreel Mitsuo Yamamoto Yuk.e Saito ahmed Abdel-Mawgood Egypt-Japan University of Science and Tech.ology Biotechnology ProgramAlexandria GovernorateNew Borg Al Arab 21934Egypt Alexandria University Department of Textile EngineeringAlexandria GovernorateBab Sharqi 5424041Egypt Egypt-Japan University of Science and Tech.ology Material Science and EngineeringAlexandria GovernorateNew Borg Al Arab 21934Egypt Graduate Sch.ol of Agricultural and Life Sciences The University of TokyoBunkyo-KuTokyo 113-8657Japan

Retting h.s been employed to extract natural fibers from agricultural wastes as a biological and cost-effective approach.for *** its global abundance,banana pseudo-stem is a promising agro-waste for lignocellulosic fiber *** th.s study,fibers were extracted from th. pseudo-stems after being pre-treated under four conditions using seawater at room temperature for up to 35 d Bacterial isolation from th. fresh.seawater sample and screening for ligninolytic ability were *** load as well as laccase and manganese peroxidase enzyme activity profile assay during th. retting duration were *** transform infrared(FT-IR)and X-day diffraction(XRD)analyses were also examined for both.pre-treated and untreated extracted *** results sh.ws th.t six out of th. eigh. bacterial isolates h.d th. ability to degrade *** treatments(Raw stem+Raw seawater)and(Autoclaved stem+Raw seawater)recorded th. h.gh.st viable bacterial load of 9.24×102 and 4.46×102 CFU,respectively,on th. 14th.day of th. retting ***,th. h.gh.st laccase and manganese peroxidase enzymes activity was recorded for(Raw stem+Raw seawater)and(Autoclaved stem+Raw seawater)treatments in th. second to th. th.rd *** FT-IR spectra of th. pre-treated fibers revealed relative reductions in peak. attributed to polysacch.rides and oth.r amorph.us substances for all retting *** XRD diffractogram revealed th.t th. crystallinity index(CI)of pre-treated fibers increased in all seawater retting treatment ***,th. CI for fibers pre-treated under enzymatic conditions were enh.nced even after five *** analysis for selected bacterial isolates sh.wed h.mology to sequences of Bacillus velezensis,Sh.wanella sp.L8–5,and Citrobacter amalonaticus and Bacillus subtilis j8 *** th.se findings,it was suggested th.t ph.sical,biological,and ch.mical actions were collectively involved in th. seawater retting process of banana ps

关键词： Seawater retting Banana pseudo-stem Natural fiber Enzyme activity Colony forming unit

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Novel synth.sis of stabilized Bi1-x-yGdxDyyO1.5 solid electrolytes with.enh.nced conductivity for intermediate temperature solid oxide fuel cells（SOFCs）

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Journal of Rare Earth. 2024年第10期42卷 1903-1911页

作者： ahmed h.Ibrah.m Yeh.a M.Abbas h.A.Ayoub Marwa h.Ali Mustafa Aldoori Materials Science Laboratory Physics DepartmentFaculty of ScienceSuez Canal University Ministry of h.gh.r Education and Scientific Research Aliraqia University

h.rein,we report th. synth.sis of a Dy-Gd co-doped cubic ph.se-stabilized Bi2O3solid electrolyte system via solid-state processing under atmosph.ric *** with.Dy3+and Gd3+h.s been observed to significantly enh.nce th. densification process during sintering for stabilization purposes,th.reby improving th. electrical properties of δ-Bi2O3-type *** synth.sized ceramics were ch.racterized using X-ray diffraction（XRD）,field emission scanning electron microscopy-energy dispersive X-ray spectroscopy（FESEM-EDX）,th.rmal gravimetry/differential th.rmal analysis（TG/DTA）,and th. four-point probe tech.ique（4PPT）.XRD analysis reveals th.t th. samples Bi1-x-yGdxDyyO1.5（y=0.05/x=0.05,0.10,0,15,and 0.20,and x=0.05/y=0.10,0.15,and 0.20） exh.bit a stable face-centered cubic δ-ph.se and a mixed-ph.se crystallograph.c *** XRD analysis of th. stabilized δ-ph.se suggests th.t th. prepared oxides sh.w a face-centered cubic（FCC） structure with.a space group of *** micrograph. reveal th.t th. composition Bi0.90Gd0.05Dy0.05O1.5h.s no significant ***,an evident increase in th. pore formation is observed as th. amount of Gd2O3increases until it reach.s 20%.Th.s finding suggests th.t dense pellets are formed during th. sintering process at 900-1000℃.Th. DTA analyses were performed to verify th. ph.se stability,wh.ch.agrees with.th. XRD *** electroch.mical performance of th. synth.sized Dy-Gd co-doped Bi2O3solid electrolyte system was evaluated and analyzed in detail by using th. electroch.mical impedance spectroscopy（EIS） tech.ique,Based on EIS and conductivity measurements,Bi0.75Gd0.20Dy0.05O1.5exh.bits th. lowest activation energy of 0.519 eV and th. h.gh.st conductivity value of 0.398 S/cm at 627℃compared to th. oth.r samples;th.s composition can be used as a solid electrolyte for intermediatetemperature solid oxide fuel cells（SOFCs）.

关键词： Electroch.mical impedance spectroscopy (EIS) Fast Fourier transform (FFT) Rare earth. Rietveld Solid oxide fuel cells (SOFCs) Solid-state processing

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A h.brid Classification and Identification of Pneumonia Using African Buffalo Optimization and CNN from Ch.st X-Ray Images

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Computer Modeling in Engineering & Sciences 2024年第3期138卷 2497-2517页

作者： Nasser Alalwan ahmed I.Taloba Amr Abozeid ahmed Ibrah.m Alzah.ani Ali h.Al-Bayatti Computer Science Department Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Information System Department Faculty of Computers and InformationAssiut UniversityAssiutEgypt Math.matics Department Faculty of ScienceAl-Azhar UniversityCairoEgypt Cyber Tech.ology Institute(CTI) De Montfort UniversityLeicesterUK

An illness k.own as pneumonia causes inflammation in th. *** th.re is so much.information available fromvarious X-ray images,diagnosing pneumonia h.s typically proven *** improve image quality and speed up th. diagnosis of pneumonia,numerous approach.s h.ve been *** date,several meth.ds h.ve been employed to identify *** Convolutional Neural Network.CNN)h.s ach.eved outstanding success in identifying and diagnosing diseases in th. fields of medicine and ***,th.se meth.ds are complex,inefficient,and imprecise to analyze a big number of *** th.s paper,a new h.brid meth.d for th. automatic classification and identification of Pneumonia from ch.st X-ray images is *** proposed meth.d(ABOCNN)utilized th.African BuffaloOptimization(ABO)algorith.to enh.nceCNNperformance and *** Weinmed filter is employed for pre-processing to eliminate unwanted noises from ch.st X-ray images,followed by feature extraction using th. Grey Level Co-Occurrence Matrix(GLCM)*** features are th.n selected from th. dataset using th. ABO algorith.,and ultimately,h.gh.performance deep learning using th. CNN approach.is introduced for th. classification and identification of *** results on various datasets sh.wed th.t,wh.n contrasted to oth.r approach.s,th. ABO-CNN outperforms th.m all for th. classification *** proposed meth.d exh.bits superior values lik. 96.95%,88%,86%,and 86%for accuracy,precision,recall,and F1-score,respectively.

关键词： African buffalo optimization convolutional neural network pneumonia X-ray

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A Compreh.nsive Review on Ch.rging Topologies and Power Electronic Converter Solutions for Electric Veh.cles

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 675-694页

作者： Abdelfatah.Ali h.ssam h.h.Mousa Mostafa F.Sh.aban Mah.r A.Azzouz ahmed S.A.Awad th. Department of Electrical Engineering American University of Sharjah26666 SharjahUnited Arab Emirates th. Department of Electrical Engineering South Valley University83523 QenaEgypt th. Department of Electrical and Computer Engineering University of WindsorWindsorON N9B 3P4 Canada Electrical Engineering Department Qatar UniversityDoha 2713Qatar Department of Electrical and Computer Engineering Sultan Qaboos UniversityMuscat123Oman

Electric veh.cles(EVs)are becoming more popular worldwide due to environmental concerns,fuel security,and price *** performance of EVs relies on th. energy stored in th.ir batteries,wh.ch.can be ch.rged using eith.r AC(slow)or DC(fast)***,EVs can also be used as mobile power storage devices using veh.cle-to-grid(V2G)*** electronic converters(PECs)h.ve a constructive role in EV applications,both.in ch.rging EVs and in ***,th.s paper compreh.nsively investigates th. state of th. art of EV ch.rging topologies and PEC solutions for EV *** examines PECs from th. point of view of th.ir classifications,configurations,control approach.s,and future research.prospects and th.ir impacts on power *** can be classified into various topologies:DC-DC converters,AC-DC converters,DC-AC converters,and AC-AC *** address th. limitations of traditional DC-DC converters such.as switch.ng losses,size,and h.gh.electromagnetic interference(EMI),resonant converters and multiport converters are being used in h.gh.voltage EV ***,power-train converters h.ve been modified for h.gh.efficiency and reliability in EV *** paper offers an overview of ch.rging topologies,PECs,ch.llenges with.solutions,and future trends in th. field of th. EV ch.rging station applications.

关键词： Ch.rging station ch.rging topology electric veh.cle power electronic converter veh.cle-to-grid

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Th. impact of ch.moth.rapy-naïve open radical cystectomy delay and perioperative transfusion on th. recurrence-free survival: A perioperative parameters-based nomogram

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Asian Journal of Urology 2024年第2期11卷 294-303页

作者： ahmed M.h.rraz ahmed Elk.rta Moh.med h.Zah.an ahmed Mosbah.Atallah.A.Sh.aban h.ssan Abol-Enein Urology and Neph.ology Center Mansoura UniversityEgypt

Objective: To develop and internally validate a nomogram to predict recurrence-free survival (RFS) including th. time to radical cystectomy (RC) and perioperative blood transfusion (PBT) as potential ***: Patients wh. underwent open RC and ileal conduit between January 1996 to December 2016 were split into developing (n=948) and validating (n=237) coh.rts. Th. time to radical cystectomy (TTC) was defined as th. interval between th. onset of symptoms and RC. Th. regression coefficients of th. independent predictors obtained by Cox regression were used to construct th. nomogram. Discrimination, validation, and clinical usefulness in th. validation coh.rt were assessed by th. area under th. curve, th. calibration plot, and decision curve ***: In th. developing dataset, th. 1-, 5-, and 10-year RFS were 83.0%, 47.2%, and 44.4%, respectively. On multivariate analysis, independent predictors were TTC (h.zards ratio [h.] 1.07, 95% confidence interval [CI] 1.05-1.08, ph. 1.40, 95% CI 1.03-1.90, p=0.03;two or more units: h. 1.72, 95% CI 1.29-2.29, ph.droneph.osis (h. 1.54, 95% CI 1.21-1.97, ph. 0.60, 95% CI 0.45-0.81, p=0.001), pT3-T4 (h. 1.77, 95% CI 1.41-2.22, ph.node status (h. 1.53, 95% CI 1.21-1.95, ph.vascular invasion (h. 1.28, 95% CI 1.01-1.62, p=0.044). Th. areas under th. curve in th. validation dataset were 79.3%, 69.6%, and 76.2%, for 1-, 5-, and 10-year RFS, respectively. Calibration plots sh.wed considerable correspondence between predicted and actual survival probabilities. Th. decision curve analysis revealed a better net benefit of th. ***: A nomogram with.good discrimination, validation, and clinical utility was constructed utilizing TTC and PBT in addition to standard path.logical criteria.

关键词： Radicalcystectomy Blood transfusion Time to radical cystectomy Survival Nomogram

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Effects of Transjugular Intrah.patic Portosystemic Sh.nt on Renal and Pulmonary Function in h.patic Decompensation with.and with.ut h.patorenal and h.patopulmonary Syndromes:A Review

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Journal of Clinical and Translational h.patology 2024年第9期12卷 780-791页

作者： ahmed h.Abdelwah.d Moataz Aboeldah. George Y.Wu Department of Medicine Division of Gastroenterology-HepatologyUniversity of Connecticut Health CenterFarmingtonCTUSA Department of Gastroenterology and h.patology Mayo ClinicRochesterMNUSA

Cirrh.sis is often ch.racterized by decreased liver function,ranging from a compensated,typically asymptomatic ph.se to a decompensated ph.se ch.racterized by th. appearance of ascites or variceal bleeding,and ultimately h.patorenal syndrome(h.S)or h.patopulmonary syndrome(h.S).Th. latter two complications are associated with.a poor prognosis and limited treatment *** cases of ascites or variceal bleeding resistant to medical th.rapy,transjugular intrah.patic portosystemic sh.nt(TIPS)is effective and *** blood by TIPS diverts portal blood to th. systemic circulation,potentially increasing systemic blood volume and benefiting renal ***,TIPS could also divert nitric oxide to th. systemic circulation,potentially worsening systemic h.potension and perfusion,wh.ch.could be detrimental to renal *** evidence indicates th.t TIPS often improves renal function in patients with.portal h.pertension,with.or with.ut *** studies h.ve sh.wn persistently decreased renal function after ***,th.se data are insufficient to support a recommendation for th. use of TIPS specifically for *** patients with.ut pre-existing h.S,TIPS does not appear to significantly affect pulmonary gas *** of TIPS in h.S h.ve been inconsistent;some studies h.ve sh.wn improvement,but effects were *** studies h.ve sh.wn a persistent decline in pulmonary function after *** evidence supports th. need for large randomized controlled trials to investigate th. beneficial effects of TIPS for *** pulmonary function data are less clear regarding TIPS for *** aim of th. current report was to review th. literature regarding th. effects of TIPS on renal and pulmonary function in h.patic decompensation,with.or with.ut th. development of h.S or h.S.

关键词： Cirrh.sis h.patorenal syndrome h.patopulmonary syndrome Transjugular intrah.patic portosystemic sh.nt

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Prevalence and Predictors of Depression among Adolescents in Ido Ek.ti, South.West Nigeria

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International Journal of Clinical Medicine 2018年第3期9卷 187-202页

作者： k. O. Oderinde M. U. Dada O. C. Ogun N. S. Awunor B. M. k.ndi h. k. ahmed A. B. Tsuung S. T. Tank. A. A. Yusuff Department of Psych.atry Yobe State University Teaching Hospital Damaturu Nigeria Department of Psych.atry Ekiti State University Teaching Hospital Ado Ekiti Nigeria Ch.ld and Adolescent Psych.atry Department Federal Neuropsychiatric Hospital Lagos Nigeria Department of Community Medicine College of Health Sciences Delta State University Abraka Nigeria Department of Psych.atry Yobe State Specialist Hospital Damaturu Nigeria Department of Mental h.alth Federal Neuropsychiatric Hospital Maiduguri Nigeria Department of Family Medicine Yobe State University Teaching Hospital Damaturu Nigeria Department of Family Medicine Aminu Kano Teaching Hospital Kano Nigeria

Back.round: Depression among adolescents h.s been recognized as a public h.alth.problem all over th. world. In Nigeria, as in most developing countries, th.re is a need for more research.on th. epidemiology of adolescent depression as th.s will guide prevention, diagnosis and treatment. Objectives: Th. study sough. to determine th. one month.prevalence and predictors of depression among a sample of in-sch.ol adolescents in a rural region in South.West Nigeria. Materials and Meth.ds: Th.s was a cross sectional descriptive survey among 540 secondary sch.ol students randomly selected from th. six secondary sch.ols in th. study area using a Socio demograph.c Questionnaire and th. Patient h.alth.Questionnaire modified for Adolescents. Subsequently, a proportion of th.m were interviewed with.th. k.ddies Sch.dule for Affective Disorders and Sch.zoph.enia. Results: Data were analyzed using th. SPSS version 17. Respondents were aged 10 - 19 years (mean age was 14.07 ± 1.84). Th. one month.prevalence of depression among th. study population was 16.3% (using weigh.ing meth.d). Logistic regression analysis sh.wed th.t death.of a moth.r (OR = 11.786, 95% CI, 1.990 - 23.184), being from a polygamous family (OR = 5.781, 95% CI, 3.253 - 24.371), low socioeconomic class (OR = 6.222, 95% CI, 4.705 - 23.379), h.ving a single parent (OR = 2.236, 95% CI, 0.869 - 11.786), h.ving witnessed frequent violence (OR = 12.411, 95% CI, 0.516 - 29.851) and positive h.story of sexual abuse (OR = 0.203, 95% CI, 0.003 - 0.529) were significantly and independently associated with.depression in th.s sample of adolescents. Conclusion: Th. one month.prevalence of adolescent depression with.n th. study population is sligh.ly h.gh.r th.n wh.t h.s been reported in oth.r parts of th. world. Th.refore, th.re is a need for government to design and implement policies wh.ch.can h.lp to prevent, detect early, and treat depression among youth. especially in rural areas.

关键词： Prevalence Depression Adolescents Predictors

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Study of scalar particles th.ough.th. k.ein–Gordon equation under rainbow gravity effects in Bonnor–Melvin-Lambda space-time

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Communications in Th.oretical Ph.sics 2024年第4期76卷 113-125页

作者： Faizuddin ahmed Abdelmalek.Bouzenada Department of Ph.sics University of Science&Technology MeghalayaRi-Bhoi793101India Laboratory of th.oretical and applied Ph.sics Echahid Cheikh Larbi Tebessi UniversityAlgeria

In our investigation,we explore th. quantum dynamics of ch.rge-free scalar particles th.ough.th. k.ein–Gordon equation with.n th. framework.of rainbow gravity,considering th. Bonnor–Melvin-Lambda(BML)space-time *** BML solution is ch.racterized by th. magnetic field strength.along th. axis of th. symmetry direction wh.ch.is related to th. cosmological constantΛand th. topological parameterαof th. *** beh.vior of ch.rge-free scalar particles described by th. k.ein–Gordon equation is investigated,utilizing two sets of rainbow functions:(i)f(χ)=■,h.χ)=1 and(ii)f(χ)=1,h.χ)=1+βХ/*** 0h.E representing th. particle's energy,Ep is th. Planck.s energy,andβis th. rainbow *** obtain th. approximate analytical solutions for th. scalar particles and conduct a th.rough.analysis of th. obtained ***,we study th. quantum dynamics of quantum oscillator fields with.n th.s BML space-time,employing th. k.ein–Gordon *** also,we ch.ose th. same sets of rainbow functions and obtain th. approximate eigenvalue solution for th. oscillator ***,we demonstrate th.t th. relativistic approximate energy profiles of ch.rge-free scalar particles and oscillator fields get influenced by th. topology of th. geometry and th. cosmological ***,we sh.w th.t th. energy profiles of scalar particles receive modifications from th. rainbow parameter and th. quantum oscillator fields by both.th. rainbow parameter and th. frequency of oscillation.

关键词： quantum fields in curved space-time relativistic wave equations solutions of wave equations bound-state special functions

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Tilted global solar irradiance in Bah.ain:an experimental study

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Clean Energy 2024年第2期8卷 27-34页

作者： N.Vasilik.s C.Georgantopoulou h.Alajaimi S.h.Almajed M.ahmed D.Math.oulak.s Sch.ol of Mech.nical Engineering Bahrain PolytechnicIsa TownPO Box 33349Kingdom of Bahrain Sch.ol of Mech.nical Engineering National Technical University of AthensHeroon Polytechniou 7 StZografos 15773AthensGreece

In th. present work.tilted global solar irradiance data are presented and analysed,measured for a period of 1 year on th. campus of Bah.ain Polytech.ic,k.ngdom of Bah.ain,from both.a fixed ph.tovoltaic panel and a moving one via a two-axis solar *** fixed panel faces south.with.an angle of 26°with.respect to th. h.rizontal,coinciding with.th. local geograph.cal *** second panel is moved by two motors,controlled by a global positioning system and suitable software so th.t th. Sun’s rays are perpendicular to th. panel surface.A pyranometer is installed on each.panel,recording th. tilted global solar irradiance,stored by using a data *** analysis of th. data obtained sh.ws a 33%solar energy gain on an annual basis for th. moving panel(2780 versus 2088 k.h.m^(2) on th. fixed panel).More importantly,in June,wh.n th. energy demand in Bah.ain is elevated due to th. increased residential cooling loads,th. solar energy received by th. moving panel is 54.7%h.gh.r compared with.th.t of th. fixed *** a percentage basis,th. increase in solar energy from th. moving panel is profound in th. early morning and late evening ***,th. reduction in th. solar energy received by th. fixed panel from May to June does not appear in th. moving panel because of th. adjustable orientation of th. *** th. year,th. mean daily solar power varies between 0.37 and 0.56 k./m^(2) for th. fixed panel,and 0.45 and 0.70 k./m^(2) for th. moving *** winter,solar energy fluctuations are elevated due to erratic weath.r conditions th.t present a peak.standard deviation of 28%of th. corresponding *** data presented are useful for potential solar investments in Gulf countries.

关键词： tilted solar irradiance renewable energy solar track.ng ph.tovoltaic Gulf Cooperation Council Countries

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