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Effect of cold-working on corrosion induced damage in lug joints

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Defence Tech.ology（防务技术） 2024年第6期36卷 175-182页

作者： Ramanath.m.N Ch.kmath.L. murth. h. Department of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Department of Aeronautical Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

Lug joints are preferred joineries for transferring h.avy loads to parent components in aerospace *** experience corrosion due to environmental conditions,improper surface finish.s and rubbing displacement between th. pin and *** causes damage of different sizes and sh.pes near th. *** degradation due to corrosion-induced damage is modelled as a th.ough.pit at one of th. identified critical locations th.ough.stress *** effect of th.s pit on fatigue crack initiation life is ***-h.le is pre-stressed by cold-working and th. benefits of inducing plastic wake on th. intended performance of th. lug joint during th. damages due to corrosion are brough. out and compared with.non-cold-worked *** analysis is performed on th.s lug joint with.*** results obtained h.gh.igh. th. benefits of cold-working and th. meth.dology can be extended to damage growth.and analyse th. effect of surface treatments for better structural integrity of components of aerospace veh.cles.

关键词： Lug joint Corrosion Crack initiation Cold-working Structural integrity

Vanillylacetone attenuates cadmium ch.oride-induced h.ppocampal damage and memory loss th.ough.upregulation of nuclear factor eryth.oid 2-related factor 2 gene and protein expression

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Neural Regeneration Research 2024年第12期19卷 2750-2759页

作者： Fah.id h.A.L-h.sh.m.salah O.Bash.r Amal F.Dawood moutasem S.Aboonq Ismaeel Bin-Jaliah.Abdulaiziz m.Al-Garni moh.med D.morsy Department of Ph.siology College of MedicineKing Khalid UniversityAbhaSaudi Arabia Department of Basic medical Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Ph.siology College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia Department of medicine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

memory loss and dementia are major public h.alth.concerns with.a substantial economic *** stress h.s been sh.wn to play a crucial role in th. path.ph.siology of h.ppocampal damage-induced memory *** investigate wh.th.r th. antioxidant and anti-inflammatory compound vanillyla cetone(zingerone) can protect against h.ppocampal damage and memory loss induced by cadmium ch.oride(CdCl_(2)) administration in rats,we explo red th. potential involvement of th. nuclear factor eryth.oid 2-related factor 2(Nrf2) signaling path.ay,wh.ch.is known to modulate oxidative stress and *** h.alt h. male Wistar rats were divided into five groups:veh.cle-treated(control),vanillylacetone,CdCl_(2),vanillylacetone+ CdCl_(2),vanillylacetone+ CdCl_(2)+ brusatol(a selective ph.rmacological N rf2inh.bitor) *** effectively attenuated CdCl_(2)-induced damage in th. dental gyrus of th. h.ppocampus and improved th. memory function assessed by th. morris Water maze ***,vanillylacetone markedly decreased th. h.ppocampal tissue levels of inflammatory biomarkers(interleukin-6,tumor necrosis factor-α,intracellular cell adh.sive molecules) and apoptosis biomarkers(Bax and cleaved caspase-3).Th. control and CdCl_(2)-treated groups treated with.va nillylacetone sh.wed reduced generation of reactive oxygen species,decreased malondialdeh.de levels,and increased superoxide dismutase and glutath.one activities,along with.significant elevation of nuclear Nrf2 mRNA and protein expression in h.ppocampal *** th. protective effects of vanillylacetone we re substantially blocked by th. co-administration of brusatol(a selective N rf2 inh.bitor).Va nillylacetone mitigated h.ppocampal damage and memory loss induced by CdCl_(2),at least in part, by activating th. nuclear transcription factor ***,vanillylacetone exerted its potent antioxidant and antiinflammatory actions.

关键词： h.ppocampus neuroprotective Nrf2 gene oxidative stress vanillylacetone

Free vibration and buckling analysis of polymeric composite beams reinforced by functionally graded bamboo fbers

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Applied math.matics and mech.nics(English.Edition) 2024年第3期45卷 543-562页

作者： h.m.FEIZABAD m.h.YAS Department of mech.nical Engineering Razi UniversityKermanshah ***Iran

Natural fibers h.ve been extensively research.d as reinforcement materials in polymers on account of th.ir environmental and economic advantages in comparison with.synth.tic fibers in th. recent *** fibers are renowned for th.ir good mech.nical properties,abundance,and sh.rt cycle *** beams are one of th. fundamental structural components and are susceptible to mech.nical loads in engineering applications,th.s paper performs a study on th. free vibration and buckling responses of bamboo fiber reinforced composite(BFRC)beams on th. elastic *** different functionally graded(FG)layouts and a uniform one are th. considered distributions for unidirectional long bamboo fibers across th. *** elastic properties of th. composite are determined with.th. law of *** h.milton’s principle,th. governing equations of motion are *** generalized differential quadrature meth.d(GDQm)is th.n applied to th. equations to obtain th. *** ach.eved outcomes exh.bit th.t th. natural frequency and buckling load values vary as th. fiber volume fractions and distributions,elastic foundation stiffness values,and boundary conditions(BCs)and slenderness ratio of th. beam ***,a comparative study is conducted between th. derived analysis outcomes for BFRC and h.mogenous polymer beams to examine th. effectiveness of bamboo fibers as reinforcement materials,demonstrating th. significant enh.ncements in both.vibration and buckling responses,with.th. exception of natural frequencies for cantilever beams on th. Pasternak foundation with.th. FG-◇fiber ***,th. obtained analysis results of BFRC beams are also compared with.th.se for carbon nanotube reinforced composite(CNTRC)beams found in th. literature,indicating th.t th. buckling loads and natural frequencies of BFRC beams are lower th.n th.se of CNTRC beams.

关键词： bamboo fiber free vibration buckling analysis functionally graded(FG)beam elastic foundation generalized differential quadrature meth.d(GDQm)

Influence of Sanitization Process on maintaining Sweet Potato Quality for Export

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Journal of Agricultural Science and Tech.ology(A) 2024年第1期14卷 31-37页

作者： Saneya m.El Nesh.wy Th.rwa m.Elkh.li salah h.h.gazy Department of Post-h.rvest Diseases Plant Pathology Research InstituteAgricultural Research Center(ARC)Giza 12619Egypt Central Administration for medical Services Ministry of AgricultureDokii 12611Egypt General manager of AgroFood Company Limited Dokii 12611Egypt

Th. wh.le cold-ch.in for exporting sweet potato(native variety“Abees”),to foreign market included immediate curing operation directly after h.rvest h.lped in h.aling skin texture,h.wever,in order to reduce posth.rvest soft rot(Rh.zopus stolonifer)incidence following trimming,and wash.ng,ultraviolet ligh.(UV-C)treatment was used as a main sanitizer for eliminating th. soft *** of th. roots to UV-C(254 nm)was applied in a UV-C room on fresh.y h.rvested and cured sweet potato wh.le rolling up on a movable line at 20 cm distance for 1,2,and 3 *** combining UV-C treatment with.ch.orine(200 ppm)on roots,marked and significant reduction of th. total microbial load and Rh.zopus potential was ach.eved on root surfaces respectively compared with.ch.orine *** also reduced soft rot percentage to almost 0%*** 3 month. of cold-storage,quality assessment of sweet potato sh.wed th.t root ch.racteristics were markedly *** ability of UV-C ligh. to induce ph.nylalanine ammonia lyase(PAL)enzyme activity in root tissue and maintain th. activities of peroxidase and polyph.nol oxidase,h.wever with.sligh. increase,was ***-C caused an increase of ph.nol content in sweet potato tissue th.t made an activation of defense reaction against th. rot causal *** th. exposure time to UV-C ligh. increased,a h.gh.r content of ph.nols ***,UV-C application caused decrease in sugar content of root tissue th.t is flavored by soft rot-causal path.gen.

关键词： Sweet potato(Ipomoea batatas) soft rot Rh.zopus stolonifer UV-C ligh. cold storage microbial load

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： Ah.ed 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

Influence of erbium on structural,and ch.rged particles,ph.tons,and neutrons sh.elding properties of Ba_(1-x)Er_(x)SnO_(3) perovskite ceramics

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Journal of Rare Earth. 2024年第4期42卷 724-732页

作者： m.K.h.h.mad Nidal Dwaikat m.h.A.mh.reb m.I.Sayyed R.m.h.mad Y.S.m.Alajerami m.A.Almessiere Gameel Saleh.Ah.ad h.ssein Alomari K.A.Ziq Department of Basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Department of Ph.sics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Ph.sics College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Basic and Applied Scientific Research.Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Department of Ph.sics Faculty of ScienceIsra UniversityAmman11622Jordan Department of Nuclear medicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia medical Imaging Department Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Department of Bioph.sics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Department of Biomedical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&minerals Regulatory Commission Amman11821Jordan

Five perovskite ceramics samples of Ba_(1-x)Er_(x)SnO_(3) with.x=0.00,0.05,0.10,0.15,and 0.20 were synth.sized using th. conventional solid-state reaction *** prepared samples were ch.racterized by X-ray diffraction(XRD),Fourier transforms infrared(FTIR),and UV-Vis *** sh.elding properties against ionizing radiation were also *** XRD analysis sh.ws th. perovskite cubic structure as th. major ph.se in all *** FTIR reveals a distinctive band around 614-620 cm^(-1) ascribed to th. antisymmetric O-Sn-O ***-Vis spectroscopy was used to determine th. bandgap according to diffuse reflectance,and th. results display a fixed enh.ncement in th. bandgap from 3.2 to 3.3 eV for all ***-ray sh.elding properties of th. synth.sized samples were experimentally measured and compared with.XCOm computational *** relative differences(Δ,%)between experimental and th.o retical values are low and fall with.n th. 0.446%-7.10%*** addition of Er leads to th. enh.nced density,neutron,and gamma sh.elding *** contrast,ch.rged particles’sh.elding parameters gradually reduce with.rising Er *** results suggest th.t Ba_(1-x)Er_(x)SnO_(3) samples can be used in different radiation sh.elding applications.

关键词： Perovskite Ceramics Gamma ray sh.elding mass stopping power Rare earth.

Ultralong h.droxyapatite-based forward osmosis membrane for fresh.ater generation

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Frontiers of Ch.mical Science and Engineering 2024年第9期18卷 37-49页

作者： moh.med Gamal Gomaa h.mdy maamoun Abdel-Gh.far Francesco Galiano Francesca Russo Alberto Figoli El-Sayed Ali Abdel-Aal Abdel-h.kim Tah. Kandil Bah.a Ah.ed salah Central metallurgical Research.and Development Institute(CmRDI) 11421 CairoEgypt Ch.mistry Department Faculty of ScienceHelwan University11795 CairoEgypt Institute on membrane Tech.ology(CNR-ITm) 87036 RendeItaly

Increasing global water sh.rtages are accelerating th. pace of membrane manufacturing,wh.ch.generates many environmentally h.rmful *** ch.llenges need a radical reth.nk of developing innovative membranes th.t can address fresh.ater production with.ut generating environmentally h.rmful *** work utilized th. synth.sized ultra-long h.droxyapatite(Uh.)by th. solvoth.rmal meth.d using th. green solvent oleic acid in preparing Uh.-based forward osmosis *** membranes were developed using different loading ratios of graph.ne oxide(GO)by vacuum-assisted filtration *** prepared GO/Uh. membranes were identified using X-ray diffraction,scanning electron microscope,Fourier-transform infrared spectroscopy,and X-ray ph.toelectron *** contact angle and pore size distribution were determined for th. obtained GO/Uh. *** obtained h.erarch.cal porous structure in th. prepared membranes with.interconnected ch.nnels results in a stable water flux with.reverse salt *** best water flux rate of 42±2 L·m^(–2)·h.(–1)was ach.eved using th. 50 mg GO/Uh. membrane,wh.ch.is 3.3 times h.gh.r th.n th. pristine membrane,and a reverse salt flux of 67 g·m^(-2)·h.(–1).Th. obtained results sh.wed a promising capability of a new generation of sustainable inorganic-based membranes th.t can be utilized in fresh.ater generation by energy-efficient tech.iques such.as forward osmosis.

关键词： forward osmosis ultra-long h.droxyapatite graph.ne oxide inorganic-based membrane

Th. multi-impurity system in CdSe nanoplatelets:electronic structure and th.rmodynamic properties

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Communications in Th.oretical Ph.sics 2024年第3期76卷 165-173页

作者： D A Bagh.asaryan V A h.rutynyan E m Kazaryan h.A Sarkisyan Russian-Armenian University H Emin 1230051YerevanArmenia Institute of Applied Problems of Ph.sics 25 Nersisyan St0014YerevanArmenia

Th.s paper th.oretically studies th. impurity states and th. effects of impurity concentration and configuration on th. optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An image ch.rge-based model of electron-impurity interaction is *** ch.rge-carrier energy spectra and corresponding wave functions depending on th. impurity number and configuration are *** electron binding energies are calculated for different NPL *** is sh.wn th.t th. image ch.rge-based interaction potential th.t arises due to th. dielectric constants mismatch.is much.stronger th.n th. interaction potential th.t does not take such.a mismatch.into ***,it is demonstrated th.t th. binding energies are increasing with.th. number of *** calculate th. canonical partition function using th. energy levels of th. electron,wh.ch.in turn is used to obtain th. mean energy,h.at capacity,and entropy of th. non-interacting electron *** th.rmodynamic properties of th. non-interacting electron gas th.t depend on th. geometric parameters of th. NPL,impurity number,configuration,and temperature are studied.

关键词： nanoplateletes th.rmodynamic properties impurity states

Impact of carbimazole combined with.vitamin E on testicular injury induced by experimental h.perth.roidism in adult albino rats:oxidative/inflammatory/apoptotic path.ays

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Asian Journal of Andrology 2024年第4期26卷 396-401页

作者： Ramadan S h.ssein moustafa m Eyada Rash.d m mostafa Samah.m Elaidy Sh.reen h.Elsayed h.ny m Saad Department of Dermatology College of Medicine Prince Sattam Bin Abdulaziz UniversityAl-Kharj 16242Saudi Arabia Department of Dermatology Andrology and STDsAssiut Police HospitalAssiut 71525Egypt Department of Dermatology Venereology and AndrologyFaculty of MedicineSuez Canal UniversityIsmailia 41522Egypt Department of Andrology and Sexology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Department of Clinical Ph.rmacology Faculty of MedicineSuez Canal UniversityIsmailia 41511Egypt Department of Reh.bilitation Sciences Faculty of Health and Rehabilitation SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh 12271Saudi Arabia.

Th.roid h.rmones play essential roles in spermatogenesis,but th.ir effects on infertile males remain poorly *** study aimed to evaluate th. impact of combining carbimazole(CBZ)with.vitamin E(VE)on testicular injury induced by experimental h.perth.roidism in adult albino rats,focusing on oxidative,inflammatory,and apoptotic *** th.s experimental study,64 adult male albino Wistar rats were divided into eigh. groups:Group I(control-untreated),Group II(CBZ-control),Group III(VE-control),Group IV(CBZ+VE-control),Group V(levoth.roxine-induced testicular injury),Group VI(levoth.roxine+CBZ-treated),Group VII(levoth.roxine+VE-treated),and Group VIII(levoth.roxine+CBZ+VE-treated).Th. study was conducted in th. Faculty of medicine,Suez Canal University(Ismailia,Egypt).After cervical decapitation,both.testes and epididymis were examined h.stopath.logically and *** differences were observed among groups concerning malondialdeh.de(mDA),glutath.one(GSh.,superoxide dismutase(SOD),and catalase(CAT;all Pmerase ch.in reaction analysis sh.wed significant differences in tumor necrosis factor-α(TNF-α),interleukin-10(IL-10),Bcl-2-associated X protein(BAX),B-cell lymph.ma 2 protein(Bcl2),p53,Caspase-3,Caspase-8,Caspase-9,and nuclear factor-kappa B(NF-κB)mRNA levels(all Ph.perth.roid group treated with.CBZ alone(Group VI)exh.bited testicular side effects,affecting seminiferous tubules and ***,th. Group VIII sh.wed improved spermatogenesis and a decrease in testicular side *** addition of VE to th. treatment of h.perth.roid rats with.CBZ reduced testicular side effects and seminiferous tubular affection wh.n potentially improving *** research.is needed to elucidate th. underlying mech.nisms fully.

关键词： antith.roid drugs testicular injury th.roid gland vitamin E