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Large m.gnetocaloric effect and m.gnetic properties of EuRhO_(3)

Journal of Rare Earths 2024年第9期42卷 1724-1729,I0004页

作者： m.Lassri m.Sajieddine A.elouafi A.el Hachm. S.el Ouahbi R.m.ubah Laboratory of Energy and m.terials Engineering(LGEm. University of Sultan Moulay SlimaneFaculty of Science and Technology(FST)BP 52323000Béni-MellalMorocco Institute of Applied Physics(IAP)-School of Industrial m.nagem.nt(Em.NES) Mohammed Ⅵ Polytechnic UniversityHay Moulay RachidLot 6603150Ben GuerirMorocco National School of Applied Sciences(ENSA) University of Sultan Moulay SlimaneBP 7725000KhouribgaMorocco Laboratory of m.chanics Production and Industrial Engineering(LMPGI)Higher School of Technology of Casablanca(ESTC)University of Hassan Ⅱ CasablancaCasablancaMorocco Laboratory of Radiation on m.tter and Instrum.ntation(LRm.) Faculty of Science and Technology(FST)SettatHassan Ⅰ UniversitySettatMorocco Laboatory of Physics of Advanced m.terials and Therm.c(LPm.T) Faculty of Science Ain Chock(FSAC)University of Hassan Ⅱ CasablancaCasablancaMorocco

We report on the structural,m.gnetic,and m.gnetocaloric properties of EuRhO_(3) *** oxidation states of Eu and Rh ions were studied using X-ray photoelectron spectroscopy(XPS).It is found that the Eu ions are m.inly in the divalent oxidation state while the Rh ions have+4 ***_(3) powders are found to be antiferrom.gnetic with a second order m.gnetic transition at Neel tem.erature(T_(N)=2.9 K).Analysis of the m.gnetic susceptibility versus tem.erature data in term. of the Curie=Weiss law:(χ=C/(T-θ_(W))) for T>T_(N),yields θ_(W)=-3.1 K and effective m.gne tic m.m.nt μ_(ff)^(exp),which is close to the theoretical value μ_(eff)^(theo).The m.gnetic entropy change(-Δ_(Sm.),was determ.ned by em.ploying the therm.dynam.ic m.xwell's *** μ_0H=5 T and near T_(N),ΔS_(m.^(m.x) and relative cooling power(RCP) exhibit large values of 33.7 J/(kg·K) and 238 J/kg,*** large m.gnitude of-Δ_(Sm. and RCP show that the EuRhO_(3) com.ound could be a potential candidate to be used in cryogenic m.gnetic refrigeration.

关键词： X-ray photoelectron spectroscopy Cryogenic m.gnetic refrigeration m.gnetic properties m.gnetocaloric effect Rare earths

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Effectiveness of biofertilizers foliar application on yield and quality traits of flax(Linum.usitatissim.m.L.)

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Oil Crop Science 2024年第2期9卷 91-101页

作者： Saied el Sayed A.B.Bakry O.A.Nofal m.A.Abo Horish Plant Nutrition Departm.nt National Research Centre33 El-Behouth St12622DokkiCairoEgypt Field Crops Departm.nt National Research Centre33 El-Behouth St12622DokkiCairoEgypt

Flax is considered to be one of the m.st significant dual-purpose crops for oil and fiber production in Egypt and *** have a substantial im.act on various m.tabolic processes,including increased photo-synthesis,endogenous horm.ne levels,ion absorption,nucleic acid synthesis,and protein *** factors collectively contribute to the growth and developm.nt of ***,this study aim. to investigate how three biofertilizers(Algae extract,Cm. as a by-product of yeast,and m.talosate m.lti m.nerals as am.no acids)can enhance both the quantity and quality of flax seed yield under sandy soil *** field experim.nts were conducted at the Experim.ntal Station of National Research Centre in Nubaria District,Behira Governorate,Egypt during two seasons(2021/2022)using a random.zed com.lete block design(RCBD).The results revealed significant differences am.ng all tested biofertilizers in term. of various characteristics studied in *** application of algae extract at a rate of 1.50 m./L resulted in an increase in seed yield(ton/ha)by 26.69%&19.89%,straw yield(ton/ha)by 8.08%&17.12%,and oil yield(kg/ha)by 47.72%&33.69%com.ared to the control group during both seasons *** applications of algae extract at a rate of 1.50 m./L along with Cm. at a rate of 5 m.L/L and am.no acids at a rate of 1.50 m./L dem.nstrated significantly higher m.cronutrient contents(N,P,K),m.cronutrient contents(Fe,Zn,m.),seed oil content,and protein content in flax seeds during both *** highest values for seed oil content and protein content%were obtained through foliar application of am.no acids at a rate of 1.50 m./*** can be concluded that foliar sprays with these bio-fertilizers effectively im.roved flax perform.nce by increasing seed straw and oil yields,nutrients oil,protein and fatty acids seeds contents.

关键词： Flax Bio fertilizers Seeds yield Nutrient contents Quality

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Surface m.rphology and cell viability of sam.rium.Ⅲ) oxide/chrom.um.Ⅲ) oxide/graphene oxide/polycaprolactone targeting wound dressing

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Journal of Rare Earths 2024年第3期42卷 555-561,I0005页

作者： m.teb H.Alsham.ari Ahm.d Onayzan Alsham.ari m.ham.d Tharwat elabbasy Rafat Zreiq Faris m.ham.ed Albati m.A.el-m.rsy A.A.m.nazea Departm.nt of Health Inform.tics College of Public Health and Health InformaticsUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of Surgery College of MedicineUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of Public Health College of Public Health and HealthInformaticsHalUniversityHa'il2440Saudi Arabi Food Control Departm.nt Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Applied Science Research Center Applied Science Private UniversityAmman541350Jordan College of Shariah and Law Ha'il UniversityHa'il2440Saudi 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 DamittaNew Damietta34517.Egyp Spectroscopy Departm.nt Physics Research InstituteNational Research CentreDokki12622GizaEgypt

Com.inations of m.tal and lanthanide oxides have been done through casted film. for potential m.dical applications. In this regard, sam.rium.Ⅲ) oxide/chrom.um.Ⅲ) oxide/graphene oxide(GO)/polycaprolactone(PCL) based film. nano-com.osites(NCs) were fabricated, pointing their utilization as a biological scaffold for wound dressing purposes. Also, sam.rium.Ⅲ) oxide and chrom.um.Ⅲ) oxide have been m.rged as prom.sing optical constituents due to their unique optical behavior. The structural and com.ositional exam.nation of the studied NCs was executed by X-ray diffraction(XRD), Ram.n, and field em.ssion scanning electron m.croscopy(FESEm.. The Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL NC exhibits a surface with a lower roughness degree owing to the presence of GO. Cr_(2)O_(3)shows size reduction upon GO insertion to reach 1.2 μm.as the average grain size, whilst Sm.(2)O_(3)records an average grain size of less than 1 μm. As well, the polym.ric nano-com.ositions exhibit variation in contact angle values that hit 29.76°± 3.52°for Sm.(2)O_(3)/PCL, and 48.62°± 1.37°for Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL as the second lowest contact angle. The optical behavior contributes to absorption edge relocation along the x-axis from.1.7 eV for pure PCL, to 2.65 eV for Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL. Regarding biological responses, the cell exposed to 2.5 μg/m.L of Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL shows cell viability of 119.31%, while 5 μg/m.L hits 99.6%. Additionally, the resulting cell attachm.nt m.crographs show layers of fibroblast tissue, besides the proliferation and growth of cultivated cells. Thus, the Sm.(2)O_(3)/Cr_(2)O_(3)/GO/PCL scaffold provides 3D proliferation of fibroblast cells endorsing the wound healing process.

关键词： Wound healing Wound dressing Polycaprolactone Sm.(2)O_(3) Cr_(2)O_(3) Rare earths

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The com.ined effects of farm.yard m.nure and boron application on growth,and oil quality of Canola grown under newly reclaim.d soils

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Oil Crop Science 2024年第1期9卷 53-59页

作者： Farid Hellal Saied el Sayed Am.ny Abdel m.hsen Ram.dan Doaa m.Abobasha Plant Nutrition Departm.nt National Research Centre33 El-Behouth St12622DokkiCairoEgypt Botany Departm.nt National Research Centre33 El-Behouth St12622DokkiCairoEgypt

Two field experim.nts were conducted during the m.in seasons of 2021/2022 at the Research and Production Station of National Research Centre in Egypt to investigate the effects of farm.ard m.nure(FYm.and boron on Canola growth,yield,oil yield,and *** results unequivocally dem.nstrated that the com.ined application of FYm.at a rate of 14.4 ton ha^(-1)with a foliar spray of boron at 100 ppm.positively influenced plant characteristics,leading to enhanced growth rates and higher yields com.ared to the control ***,this integrated approach significantly im.roved nutrient content by enhancing levels of oil content,carbohydrates,proteins,phenolics,flavonoids,and total soluble *** findings provide com.elling evidence that utilizing farm.m.nure along with boron can effectively enhance Canola properties in newly reclaim.d soils while prom.ting sustainable agricultural practices.

关键词： Oil quality Farm.ard m.nure Phytochem.cal content Canola Yield production

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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年第5期35卷 1720-1737页

作者： m.ham.d m.Gom.a Em.d A.Abd el Aziz Geophysical Sciences Departm.nt National Research CentreEl-Behoos St.DokkiCairo 12622Egypt

The Zeit sand reservoir is one of the m.st prolific form.tions at Northwestern side of the Gulf of *** 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 *** 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 *** 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 *** m.asurem.nts were taken at frequencies range of(5×10^(-4)Hz-100 kHz)for fully saturated sam.les(clayey sandstone)with NaCl(20 gm.L).As salinity,clay content,and frequency increase,consequently does the electrical *** 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 *** 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(foresea coincide with the dipping of strata).Furtherm.re,the studied Zeit Form.tion has good petrophysical properties that coincide with m.rine *** 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).

关键词： Zeit Form.tion petrophysical evaluation depositional environm.nt Spectral Gam.a Ray electrical properties gulf of Suez sedim.ntology

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Activating Ru in the pyram.dal sites of Ru_(2)P-type structures with earth-abundant transition m.tals for achieving extrem.ly high HER activity while m.nim.zing noble m.tal content

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Carbon Energy 2024年第9期6卷 80-92页

作者： Sayed m.el-Refaei Patrícia A.Russo Thorsten Schultz Zhe-Ning Chen Patrick Am.alem.Norbert Koch Nicola Pinna Departm.nt of Chem.stry and the Center for the Science of m.terials Berlin Humboldt-Universität zu BerlinBerlinGermany m.x-Planck-Institut für Chem.sche Energiekonversion Mülheim an der RuhrGermany Institut für Physik and Center for the Science of m.terials Berlin Humboldt-Universität zu BerlinBerlinGermany Helm.oltz-Zentrum.Berlin für m.terialien und Energie Gm.H BerlinGermany State Key Laboratory of Structural Chem.stry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouChina

Rational design of efficient pH-universal hydrogen evolution reaction catalysts to enable large-scale hydrogen production via electrochem.cal water splitting is of great significance,yet a challenging ***,Ru atom. in the Ru_(2)P structure were replaced with m.Co,Ni,or m. to produce m.(2-x)Ru_(x)P *** m.tals show strong site preference,with Co and Ni occupying the tetrahedral sites and Ru the square pyram.dal sites of the CoRuP and NiRuP Ru_(2)P-type *** presence of Co or Ni in the tetrahedral sites leads to charge redistribution for Ru and,according to density functional theory calculations,a significant increase in the Ru d-band *** a result,the intrinsic activity of CoRuP and NiRuP increases considerably com.ared to Ru_(2)P in both acidic and alkaline *** effect is not observed for m.RuP,in which m. prefers to occupy the pyram.dal *** particular,CoRuP shows state-of-the-art activity,outperform.ng Ru_(2)P with Pt-like activity in 0.5 m.H_(2)SO_(4)(η10=12.3 m.;η100=52 m.;turnover frequency(TOF)=4.7 s^(-1)).It rem.ins extraordinarily active in alkaline conditions(η10=12.9 m.;η100=43.5 m.)with a TOF of 4.5 s^(-1),which is 4x higher than that of Ru_(2)P and 10x that of Pt/*** increase in the Co content does not lead to drastic loss of activity,especially in alkaline m.dium.where,for exam.le,the TOF of Co_(1.9)Ru_(0.1)P rem.ins com.arable to that of Ru_(2)P and higher than that of Pt/C,highlighting the viability of the adopted approach to prepare cost-efficient catalysts.

关键词： electrocatalysis ruthenium.phosphide transition m.tal phosphonates

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Sodium.nitroprusside as a signal m.lecule for up-regulating m.m.rane characteristics,antioxidant defense system.to im.rove flax productivity under water stress

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Oil Crop Science 2024年第3期9卷 160-169页

作者： N.m.Al-Ashkar B.A.Bakry H.m.S.el-Bassiouny m.m.S.Abdallah m.S.Sadak Botany Departm.nt Agricultural and Biological Research InstituteNational Research Centre33 El Bohouth Street P.O.12622DokkiGizaEgypt Field Crops Research Departm.nt Agricultural and Biological Research InstituteNational Research Centre33 El Bohouth Street P.O.12622DokkiGizaEgypt

Water stress is a critical environm.ntal adversity that significantly im.acts the growth,developm.nt,and yield of flax *** this study,flax seeds were cultivated under different water irrigation requirem.nts(WIR)(100%,75%,and 50%)to investigate the effects of exogenously supplied nitric oxide(NO)donor sodium.nitroprusside(SNP)as foliar treatm.nts at concentrations of 0.0 m.ol/L,0.5 m.ol/L,1.0 m.ol/L,and 2.0 m.ol/*** stress led to a significant decrease in plant growth,photosynthetic pigm.nts,yield com.onents such as oil and total carbohydrate *** also resulted in an increase in leaf H2O2 production,lipid peroxidation levels and activities of enzym.tic antioxidants including polyphenol oxidase,superoxide dism.tase,and nitrate reductase ***,foliar application of SNP im.roved photosynthetic pigm.nts and antioxidant defense system.which m.tigated the negative im.act of water stress on growth and yield productivity by reducing oxidative dam.ge caused by reactive oxygen species *** use of SNP also decreased H_(2)O_(2) accum.lation levels,lipid peroxidation levels,and im.roved m.m.rane *** treatm.nt at concentration of 2 m.ol/L showed superior results com.ared to other concentrations with extrem.ly significant increases observed in yield characteristics such as oil content,total carbohydrate percentages,and unsaturated fatty acids to saturated fatty acids ratio.

关键词： Flax Fatty acid Sodium.nitroprusside Antioxidant enzym.s Yield

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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.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

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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

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Sm.rt prediction of liquefaction-induced lateral spreading

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Journal of Rock m.chanics and Geotechnical Engineering 2024年第6期16卷 2310-2325页

作者： m.ham.ad Noum.n Am.ad Raja Tarek Abdoun Waleed el-Sekelly New York University(NYU)Abu Dhabi Abu Dhabi129188United Arab Emirates University of m.nagem.nt and Technology Lahore54372Pakistan Departm.nt of Civil and Environm.ntal Eng. Rensselaer Polytechnic Institute(RPI)1108th StreetJEC 4049TroyNY12180USA Departm.nt of Structural Engineering Mansoura UniversityMansoura35516Egypt

The prediction of liquefaction-induced lateral spreading/displacem.nt(Dh)is a challenging task for civil/geotechnical *** this study,a new approach is proposed to predict Dh using gene expression program.ing(GEP).Based on statistical reasoning,individual m.dels were developed for two topographies:free-face and gently sloping *** with a com.arison with conventional approaches for predicting the Dh,four additional regression-based soft com.uting m.dels,*** process regression(GPR),relevance vector m.chine(RVm.,sequential m.nim.l optim.zation regression(Sm.R),and m.-tree,were developed and com.ared with the GEP *** results indicate that the GEP m.dels predict Dh with less bias,as evidenced by the root m.an square error(Rm.E)and m.an absolute error(m.E)for training(i.e.1.092 and 0.815;and 0.643 and 0.526)and for testing(i.e.0.89 and 0.705;and 0.773 and 0.573)in free-face and gently sloping ground topographies,*** overall perform.nce for the free-face topology was ranked as follows:GEP>RVm.m.-tree>GPR>Sm.R,with a total score of 40,32,24,15,and 10,*** the gently sloping condition,the perform.nce was ranked as follows:GEP>RVm.GPR>m.-tree>Sm.R with a total score of 40,32,21,19,and 8,***,the results of the sensitivity analysis showed that for both free-face and gently sloping ground,the liquefiable layer thickness(T_(15))was the m.jor param.ter with percentage deterioration(%D)value of 99.15 and 90.72,respectively.

关键词： Lateral spreading Intelligent m.deling Gene expression program.ing(GEP) Closed-form.solution Feature im.ortance

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