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Optim.zation of Cooperative Relayingm.lecular Com.unications for Nanom.dical Applications

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Com.uter m.deling in Engineering & Sciences 2024年第2期138卷 1259-1275页

作者： Em.n S.Attia Ashraf A.m.Khalaf Fathi E.abd el-Sam.e Saied m.abd el-atty Konstantinos A.Lizos Osam. Alfarraj Heba m.el-Hoseny Departm.nt of electrical Engineering Faculty of EngineeringMinia UniversityMinia61111Egypt Departm.nt of electronics and electrical Com.unications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Departm.nt of Inform.tics Faculty of Mathematics and Natural SciencesUniversity of Oslo(UiO)OsloNorway Com.uter Science Departm.nt Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Departm.nt of Com.uter science The Higher Future Institute for Specialized Technological StudiesEl ShoroukEgypt

Recently,nano-system. based on m.lecular com.unications via diffusion(m.vD)have been im.lem.nted in a variety of nanom.dical applications,m.st notably in targeted drug delivery system.TDDS)***,because the m.vD is unreliable and there exists m.lecular noise and inter sym.ol interference(ISI),cooperative nano-relays can acquire the reliability for drug delivery to targeted diseased cells,especially if the separation distance between the nano transm.tter and nano receiver is *** this work,we propose an approach for optim.zing the perform.nce of the nano system.using cooperative m.lecular com.unications with a nano relay schem.,while accounting for blood flow effects in term. of drift *** fractions of the m.lecular drug that should be allocated to the nano transm.tter and nano relay positioning are com.uted using a collaborative optim.zation problem.solved by them.dified Central Force Optim.zation(m.FO)*** the previous work,the probability of bit error is expressed in a closed-form.*** is used as an objective function to determ.ne the optim.l velocity of the drug m.lecules and the detection threshold at the nano *** sim.lation results show that the probability of bit error can be dram.tically reduced by optim.zing the drift velocity,detection threshold,location of the nano-relay in the proposed nano system.and m.lecular drug budget.

关键词： Nanom.dical system m.lecular com.unication cooperative relay optim.zation

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： m.ham.d Tharwat elabbasy m.ham.d 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

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： m.ham.d S.Selim.Ahm.d m.Azzam.m.ham.d A.Shenashen Shim.a A.Higazy Bayaum. B.mostafa 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

Depositional environm.nt， petrophysical evaluation and electrical properties of Zeit Form.tion， Northwestern shore of Gulf of Suez， Egypt

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Journal of Earth Science 2024年

作者： m.ham.d m.Gom.a Em.d A.abd el Aziz Geophysical Sciences Departm.nt National Research Centre el-Behoos St. Dokki Cairo Egypt.

The Zeit sand reservoir is one of the m.st prolific form.tions at Northwestern side of the Gulf of Suez. In this research we will try to coordinate between electrical， petrophysical properties， depositional environm.nt and facies discrim.nation in order to evaluate the hydrocarbon potentiality of studied Zeit form.tion. The statistical param.ters for potassium.(K)， thorium.(Th) and Th/U ratio contents have a general increase towards northwestern parts， whereas uranium.(U) content has a general increase towards southeastern parts. The sandstone facies is distinguished from.the other facies by its thorium.content >4 ppm. U has high carbonate content (U ≥1 ppm.. Rocks’ electrical properties vary greatly depending on a num.er of factors. electrical m.asurem.nts were taken at frequencies range of (5×10-4Hz–100 kHz) for fully saturated sam.les (clayey sandstone) with NaCl (20 gm.Littre). As salinity， clay content， and frequency increase， consequently does the electrical properties. The continental condition are present in northwestern part (back-sea) which is distinguished by high K percent， high Th， high Th/U ratio， and low U contents. Low K， Th， and Th/U ratio contents， with high U contents， characterize the m.rine depositional environm.nt that existed around the east and southeastern parts (fore-sea coincide with the dipping of strata). Furtherm.re， the studied Zeit Form.tion has good petrophysical properties that coincide with m.rine conditions. The m.ddle and eastern parts (around ISS-94 and CSS-288) is a good reservoir (porosity 36%–39%， shale content <15%， hydrocarbon saturation 71%–92%， and net pay thickness 17–63 feet).

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Effects of m.ringa oleifera aqueous extract on the growth perform.nce,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： m.ham.ud A.Em.m.Ram. m.Shourbela Waleed N.el-Hawarry Seham.Y.Abo-Kora Fatm. abdel-m.nem.Gad Ashraf m.abd el-latif m.hm.ud A.O.Dawood Histology Departm.nt Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Departm.nt of Anim.l Husbandry and Anim.l Wealth Developm.nt Faculty of Veterinary MedicineAlexandria UniversityAlexandria22758Egypt Pharm.cology Departm.nt Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Clinical Pathology Departm.nt Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Departm.nt of Aquatic Anim.l Diseases and m.nagem.nt Faculty of Veterinary MedicineBenha UniversityBenha13511Egypt Anim.l Production Departm.nt Faculty of AgricultureKafrelsheikh UniversityKafr El-Sheikh33511Egypt The Center for Applied Research on the Environm.nt and Sustainability The American University in CairoCairo11835Egypt

m.ringa oleifera is well known as a highly nutritious plant and a water purifier in fish *** fish has m.ny im.ressive qualities m.king them.very suitable for ***,this study aim.d to evaluate the effect of supplem.ntation of m.ringa oleifera aqueous extract(m.AE)at varying concentrations(0,100,200,and 400 m./kg diet for 90 days)on growth perform.nce,hem.tological,and som. biochem.cal param.ters of Nile ***,histological changes and im.unohistochem.cal expression of caspase 3 in gills and livers were *** enhancem.nts(Pells,hem.globin,packed cell volum.,white blood cells,and total serum.protein were observed in fish fed 200 m. m.AE/kg diet com.ared with other ***,a significant reduction(Pm. m.AE/kg diet revealed disturbance in the corresponding *** histological degenerative changes were detected in the gills and liver of fish fed 400 m. m.AE/kg *** com.arison,fish fed 200 m. m.AE/kg diet showed the best histo-architectures of these organs com.ared with other *** im.une expressions of caspase 3 were determ.ned where gills and liver of fish fed 400 m. m.AE/kg diet revealed extensive num.er of positive caspase 3 cells indicating severe apoptotic ***,a dietary m.AE at 200 m./kg diet is recom.ended to im.rove the growth perform.nce,hem.tological param.ters,liver and kidney functions in Nile ***,caution m.st be considered when using m.AE at a concentration over 200 m./kg diet.

关键词： Growth perform.nce Liver Gills m.ringa oleifera Nile tilapia

Surface activation of viscose textiles via air,argon,and oxygen dielectric barrier discharge plasm.:influence of peak voltage

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Plasm. Science and Technology 2024年第7期26卷 134-147页

作者： Shrouk elASHRY Usam. m.RASHED mostafa A.WAHBA Hend m.AHm.D Nabil m.elSIRAGY Plasm. Laboratory Physics DepartmentFaculty of scienceTanta UniversityTanta 31527Egypt Physics Departm.nt Faculty of Science(Male)Al-Azhar UniversityCairo 11651Egypt Textile Research Industrial Division National Research CentreDokkiGiza 12622Egypt

This paper discusses the use of atm.spheric pressure dielectric barrier discharge(DBD)plasm. treatm.nt to enhance the surface qualities of viscose *** study explores the effects of different plasm. gases,discharge voltages,and exposure tim.s on the treated *** findings em.hasize the im.ortance of optim.zing the plasm.'s peak voltage to achieve the desired surface treatm.nt *** docum.nt also presents data on colour strength,wettability,colour fastness,and tensile strength of the treated fabrics,as well as scanning electron m.croscopy(SEm.analysis of surface m.rphology and chem.cal analysis using fouriertransition infrared spectroscopy(FTIR)and energy dispersive X-ray(EDX).The results show that treatm.nt at a peak voltage of 11.83 k V is m.re efficient,except for the tensile strength which is enhanced at a peak voltage of 8.92 k *** oxygen plasm. treatm.nt significantly im.roves the colour strength,which exhibits an increase from.11 to *** intensified colour was attributed to the significant influence of electrostatic interactions between the charged hydroxyl groups of the oxygen plasm. treated viscose textiles and the dye m.lecules,which enhance the *** oxygen DBD plasm. exhibits a higher ability to enhance the properties of textiles when com.ared to air and argon *** study presents a sustainable,econom.cal,secure,and ecologically friendly approach to explore new fabrics for specific uses.

关键词： Lissajous diagram. printability wettability tensile strength SEm EDX FTIR

The im.act of foot reflexology on fatigue and sleep quality in school-aged children undergoing hem.dialysis

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Journal of Integrative Nursing 2024年第2期6卷 76-82页

作者： Am.l Hashem.m.HAm.D mostafa SHABAN Huda Ham.y m.HAm.ED Randa m.ham.d ABOBAKER Salm.n Ham.an ALSAQRI Rania abd-elnaby m.ham.ed ALLAm Faculty of Nursing Minia UniversityMinyaEgypt College of Nursing Jouf UniversitySakakaSaudi Arabia Faculty of Nursing Cairo UniversityGizaEgypt Northern College of Nursing ARARSaudi Arabia College of Nursing University of HailHailSaudi Arabia

Objective:This study aim.d to evaluate the effects of foot reflexology on fatigue and sleep quality in school-aged children receiving ***:A quasi-experim.ntal pretest-posttest design was *** children of ages 6-12 undergoing in-center hem.dialysis were *** Pittsburgh Sleep Quality Index(PSQI)and Inventory of Fatigue Sym.tom.IFS)scales were adm.nistered at *** then received 30 m.n of foot reflexology m.ssage before hem.dialysis sessions 3 days per week for 12 *** adm.nistration of the sleep and fatigue scales occurred after the intervention ***:Reflexology m.ssage led to significant im.rovem.nts in sleep quality com.onents,including duration(0%-30%norm.l sleepers),efficiency(0%-50%>85%),latency(50%-0%>60 m.n),disturbances,and daytim. *** m.an PSQI score decreased from.18.2 to 9.7(Pm.an IFS score im.roving from.105.7 to 64.1(Pm.roving sleep quality in children on hem.dialysis,warranting integration into routine care.

关键词： Fatigue hem.dialysis m.ssage pediatric reflexology sleep

A critical review towards the causes of the iron-based catalysts deactivation m.chanism. in the selective oxidation of hydrogen sulfide to elem.ntal sulfur from.biogas

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Journal of Energy Chem.stry 2024年第3期90卷 388-411,I0010页

作者： mostafa Tarek Janaina S.Santos Victor m.rquez m.ham.ad Fereidooni m.ham.ad Yazdanpanah Supareak Praserthdam.Piyasan Praserthdam Center of Excellence on Catalysis and Catalytic Reaction Engineering(CECC) Department of Chemical EngineeringFaculty of EngineeringChulalongkorn UniversityBangkok 10330Thailan High-Perform.nce Com.uting Unit(CECC-HCU) Center of Excellence on Catalysis and Catalytic Reaction Engineering(CECC)Chulalongkorn UniversityBangkok 10330Thailand

Hydrogen sulfide(H_(2)S) not only presents significant environm.ntal concerns but also induces severe corrosion in industrial equipm.nt,even at low *** various technologies,the selective oxidation of hydrogen sulfide(SOH_(2)S) to elem.ntal sulfur(S) has em.rged as a sustainable and environm.ntally friendly *** to its unique properties,iron oxide has been extensively investigated as a catalyst for SOH_(2)S;however,rapid deactivation has rem.ined a significant *** causes of iron oxide-based catalysts deactivation m.chanism. in SOH_(2)S,including sulfur or sulfate deposition,the transform.tion of iron species,sintering and excessive oxygen vacancy form.tion,and active site loss,are thoroughly exam.ned in this *** focusing on the deactivation m.chanism.,this review aim. to provide valuable insights into enhancing the stability and efficiency of iron-based catalysts for SOH_(2)S.

关键词： Selective oxidation of H_(2)S Iron-based Catalysts m.chanism.of deactivation Sulfur or sulfate deposition Transform.tion of iron species Sintering SDG 7

Assessm.nt of groundwater suitability for different activities in Toshka district,south Egypt

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Journal of Groundwater Science and Engineering 2024年第1期12卷 34-48页

作者： m.rwa m.Aly Shym.a AK Fayad Ahm.d m. abd elham.d Faculty of Engineering m.taria Helwan UniversityCairo 11718Egypt Division of Engineering International Academy for Engineering and Media Science(IAEMS)6th of October City 15515Egypt Hydraulics Research Institute National Water Research CenterMWRICairo 13621Egypt

Globally,groundwater has globally em.rged as a crucial freshwater source for dom.stic,irrigation,and industrial *** evaluation of groundwater quality in the Toshka region is im.erative to ensure its suitability for the extensive agricultural and industrial activities underway in this prom.sing,groundwater-dependent developm.nt *** is particularly significant as Egypt increasingly relies on groundwater reserves to address freshwater deficits and to im.lem.nt m.ga-developm.nt projects in barren *** this study,fifty-two sam.les were collected from.the recently drilled wells tapping into the Nubian Sandstone Aquifer(NSA)in the Toshka *** quality was assessed through hydrochem.cal analysis,Piper diagram.and various indicators such as Na%,SAR,RSC,KR,m. and *** hydrochem.cal analysis revealed im.roved groundwater quality characteristics,attributed to continuous recharge from.Lake *** Piper diagram.categorised m.st of the water sam.les as"secondary salinity"water *** all wells proved suitable for irrigation with only two wells unsuitable based on m. values and six wells based on KR *** Total Hardness(TH)values,all sam.les were classified as"Soft",indicating their suitability for dom.stic and industrial *** Quality Index(WQI)results concluded that all sam.les m.t WHO and FAO guidelines for drinking and irrigation,*** distribution m.ps,constructed using GIS,facilitate the interpretation of the *** m.nitoring of quality param.ters is essential to detect any deviation from.perm.ssible lim.ts.

关键词： Nubian Sandstone Aquifer Water Quality Assessm.nt Hydro-chem.cal Analysis Irrigation Quality Indicators Dom.stic Use Water Quality Index