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Effect of cold-working on corrosion induced dam.ge 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： Ram.nath.m.N Ch.km.th.L. m.rth. h. Departm.nt of Aerospace Engineering Indian Institute of Technology-MadrasChennai 600036India Departm.nt of Aeronautical Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

Lug joints are preferred joineries for transferring h.avy loads to parent com.onents in aerospace *** experience corrosion due to environm.ntal conditions,im.roper surface finish.s and rubbing displacem.nt between th. pin and *** causes dam.ge of different sizes and sh.pes near th. *** degradation due to corrosion-induced dam.ge is m.delled 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 perform.nce of th. lug joint during th. dam.ges due to corrosion are brough. out and com.ared with.non-cold-worked *** analysis is perform.d on th.s lug joint with.*** results obtained h.gh.igh. th. benefits of cold-working and th. m.th.dology can be extended to dam.ge growth.and analyse th. effect of surface treatm.nts for better structural integrity of com.onents of aerospace veh.cles.

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

Free vibration and buckling analysis of polym.ric com.osite beam. reinforced by functionally graded bam.oo fbers

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Applied m.th.m.tics and m.ch.nics(English.Edition) 2024年第3期45卷 543-562页

作者： h.m.FEIZABAD m.h.YAS Departm.nt of m.ch.nical Engineering Razi UniversityKermanshah ***Iran

Natural fibers h.ve been extensively research.d as reinforcem.nt m.terials in polym.rs on account of th.ir environm.ntal and econom.c advantages in com.arison with.synth.tic fibers in th. recent *** fibers are renowned for th.ir good m.ch.nical properties,abundance,and sh.rt cycle *** beam. are one of th. fundam.ntal structural com.onents and are susceptible to m.ch.nical loads in engineering applications,th.s paper perform. a study on th. free vibration and buckling responses of bam.oo fiber reinforced com.osite(BFRC)beam. on th. elastic *** different functionally graded(FG)layouts and a uniform.one are th. considered distributions for unidirectional long bam.oo fibers across th. *** elastic properties of th. com.osite are determ.ned with.th. law of *** h.m.lton’s principle,th. governing equations of m.tion are *** generalized differential quadrature m.th.d(GDQm.is th.n applied to th. equations to obtain th. *** ach.eved outcom.s exh.bit th.t th. natural frequency and buckling load values vary as th. fiber volum. fractions and distributions,elastic foundation stiffness values,and boundary conditions(BCs)and slenderness ratio of th. beam.***,a com.arative study is conducted between th. derived analysis outcom.s for BFRC and h.m.genous polym.r beam. to exam.ne th. effectiveness of bam.oo fibers as reinforcem.nt m.terials,dem.nstrating th. significant enh.ncem.nts in both.vibration and buckling responses,with.th. exception of natural frequencies for cantilever beam. on th. Pasternak foundation with.th. FG-◇fiber ***,th. obtained analysis results of BFRC beam. are also com.ared with.th.se for carbon nanotube reinforced com.osite(CNTRC)beam. found in th. literature,indicating th.t th. buckling loads and natural frequencies of BFRC beam. are lower th.n th.se of CNTRC beam..

关键词： bam.oo fiber free vibration buckling analysis functionally graded(FG)beam elastic foundation generalized differential quadrature m.th.d(GDQm.

Fem.le Infertility and Obesity across th. United States—A Geograph.c Cross-Sectional Analysis

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Advances in Reproductive Sciences 2024年第3期12卷 179-189页

作者： Raegan Abadie Em.ly m. Dantes Jennifer h. Sh.w Dani Zoorob h.alth.Sciences Center in Sh.eveport Louisiana State University Shreveport LA USA Departm.nt of Biom.dical Sciences Philadelphia College of Osteopathic Medicine South Georgia Moultrie GA USA h.alth.Sciences Center in Sh.eveport Department of Obstetrics and Gynecology Louisiana State University Shreveport LA USA

Th.s cross-sectional study investigates a connection between fem.le infertility and obesity across various regions of th. United States, utilizing data from.th. NIh.s “All of Us” Research.r Workbench. Analysis suggested th.t th. South.rn region exh.bited th. h.gh.st percentage of concurrently infertile and obese fem.les at 32.3%, in contrast to th. lowest in th. Western region at 28.7%. Th. findings underscore th. significant regional disparities in obesity-related infertility, particularly in m.dically underserved areas wh.re h.alth.are access is lim.ted. Th. study h.gh.igh.s th. urgent need for targeted public h.alth.interventions, particularly in th. South.rn United States, to address th. rising prevalence of obesity and its im.act on infertility. Furth.r, th.se results advocate for enh.nced public h.alth.education and policies aim.d at im.roving h.alth.are accessibility, with.th. goal of m.tigating th. adverse effects of obesity on reproductive h.alth.

关键词： Fem.le Infertility m.dical Deserts Obesity South

Predicting th. Stitch.Density of Finish.d Fabrics Using Weft Blended Grey Knit Fabrics

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Journal of Textile Science and Tech.ology 2024年第3期10卷 51-63页

作者： Kazi m.. Elias m.h.m.ad Obaidur Rah.0}n h. m. Zakir h.ssain Departm.nt of Ph.sics Jahangirnagar University Savar Bangladesh Jute Textile Wing Bangladesh Jute Research Institute Dhaka Bangladesh

Stitch.density is one of th. critical quality param.ters of knit fabrics. Th.s param.ter is closely related to oth.r ph.sical quality param.ters like fabric weigh., fabric tigh.ness factor, fiber types, blend ratio, yarn diam.ter and linear density, and fabric structure. Selecting stitch.density (wales per inch. course per inch. is essential to getting th. appropriate fabric weigh. and desired quality. Usually, no rules or assum.tions exist to get th. desired stitch.density in th. finish.d fabric stage. Fifteen types of blended knit fabrics were prepared to conduct th. study. Th. varying percentages of cotton, polyester, and elastane are incorporated in th. blends. Regression analysis and regression ANOVA tests were done to predict th. stitch.density of finish.d fabrics. A suitable regression equation is establish.d to get th. desired results. Th. study also found th.t th. stitch.density value in th. finish.d stage fabric decreases by approxim.tely 15% com.ared to th. stitch.density in th. grey fabric stage. Th.s study will h.lp th. fabric m.nufacturers get th. finish.d fabric stitch.density in advance by utilizing th. grey fabric stitch.density data set. Th. auth.r expects th.s research.to benefit th. knitting and dyeing industry, new research.rs, and advanced research.rs.

关键词： Wales per Inch Course per Inch Stitch.Density Blended Knit Fabric

Novel synth.sis of stabilized Bi1-x-yGdxDyyO1.5 solid electrolytes with.enh.nced conductivity for interm.diate tem.erature 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.0}d h.Ibrah.m.Yeh.a m.Abbas h.A.Ayoub m.rwa h.Ali m.stafa Aldoori m.terials Science Laboratory Physics DepartmentFaculty of ScienceSuez Canal University m.nistry 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 atm.sph.ric *** with.Dy3+and Gd3+h.s been observed to significantly enh.nce th. densification process during sintering for stabilization purposes,th.reby im.roving th. electrical properties of δ-Bi2O3-type *** synth.sized ceram.cs were ch.racterized using X-ray diffraction（XRD）,field em.ssion scanning electron m.croscopy-energy dispersive X-ray spectroscopy（FESEm.EDX）,th.rm.l gravim.try/differential th.rm.l analysis（TG/DTA）,and th. four-point probe tech.ique（4PPT）.XRD analysis reveals th.t th. sam.les 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 m.xed-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 *** m.crograph. reveal th.t th. com.osition Bi0.90Gd0.05Dy0.05O1.5h.s no significant ***,an evident increase in th. pore form.tion is observed as th. am.unt of Gd2O3increases until it reach.s 20%.Th.s finding suggests th.t dense pellets are form.d during th. sintering process at 900-1000℃.Th. DTA analyses were perform.d to verify th. ph.se stability,wh.ch.agrees with.th. XRD *** electroch.m.cal perform.nce of th. synth.sized Dy-Gd co-doped Bi2O3solid electrolyte system.was evaluated and analyzed in detail by using th. electroch.m.cal im.edance spectroscopy（EIS） tech.ique,Based on EIS and conductivity m.asurem.nts,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℃com.ared to th. oth.r sam.les;th.s com.osition can be used as a solid electrolyte for interm.diatetem.erature solid oxide fuel cells（SOFCs）.

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

Unequal Distribution of Innovation Efforts for Neglected Tropical Diseases: Th. Role of Funding Evaluation Criteria

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h.alth 2024年第5期16卷 490-520页

作者： Anne m. G. Neevel Kenneth.D. S. Fernald Linda h. m. van de Burgwal Ath.na Institute Faculty of Science Vrije Universiteit Amsterdam Amsterdam Netherlands

Background: International research.and innovation efforts for neglected tropical diseases h.ve increased in recent decades due to disparities in overall h.alth.research.funding in relation to global burden of disease. h.wever, with.n th. field of neglected tropical diseases som. seem.far m.re neglected th.n oth.rs. In th.s research.th. aim.is to investigate th. distribution of resources and efforts, as well as th. m.ch.nism. th.t underpin funding allocation for neglected tropical diseases. m.th.dology: A system.tic literature review was conducted to establish.a com.reh.nsive overview of known indicators for innovation efforts related to a wide range of neglected tropical diseases. Articles were selected based on a subjective evaluation of th.ir relevance, th. presence of original data, and th. breadth.of th.ir scope. Th.s was followed by th.rteen in-depth.open-ended interviews with.representatives of private, public and ph.lanth.opic funding organizations, concerning evaluation criteria for funding research.proposals. Results: Th. findings reveal a large difference in th. extent to wh.ch.th. individual diseases are neglected with.notable differences between absolute and relative efforts. Criteria used in th. evaluation of research.proposals relate to potential im.act, th. probability of success and strategic fit. Private organizations prioritize strategic fit and econom.c im.act;ph.lanth.opic organizations prioritize sh.rt-term.societal im.act;and public generally prioritize th. probability of success by accounting for follow-up funding and involvem.nt of industry. Funding decisions of different types of organizations are h.gh.y interrelated. Conclusions: Th.s study sh.ws th.t th. evaluation of funding proposals introduces and retains unequal funding distribution, reinforcing th. relative neglect of diseases. Societal im.act is th. prim.ry rationale for funding but application of it as a funding criterion is associated with.significant ch.llenges. Furth.rm.re, curre

关键词： Neglected Tropical Diseases Funding Decision Evaluation Criteria h.alth.Research.Funding Research.Im.act

Integrated Approach.s of m.ch.nical Barrier, Insecticide and Botanicals against m.ngo m.alybug (Drosich. m.ngiferae)

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Advances in Entom.logy 2024年第3期12卷 195-202页

作者： N. Akh.er m. Z. Alam.m. A. Rah.m.n m. R. U. m.ah.I. h. m.an m. A. Latif Departm.nt of Entom.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Departm.nt of Entom.logy Faculty of Agriculture Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh Departm.nt of Plant Path.logy Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh Departm.nt of Plant Path.logy Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur Bangladesh

An experim.nt was conducted to test th. efficacy of a m.ch.nical barrier around th. tree trunk with.one spray of Cyperm.th.in @ 1 m./l and turm.ric powder extract @ 15 g/500m. of water applied in integrated approach.s against m.ngo m.alybug on m.ngo tree. Th.re were 7 treatm.nts including a control. Th. treatm.nts were m.ch.nical barrier, Cyperm.th.in spray @ 1 m./l, Turm.ric powder spray @ 15 g/500m. of water, Cyperm.th.in spray + Turm.ric spray, Cyperm.th.in spray + m.ch.nical barrier, Turm.ric + m.ch.nical barrier and untreated control. Th.ee-year-old m.ngo plants grafted from.a 5-year-old m.ngo tree (Variety Am.opali) and planted in pots were used in th. experim.nt. Th. treatm.nt, Cyperm.th.in spray + m.ch.nical barrier gave th. h.gh.st reduction of m.ngo m.alybug population 87.06% to 93.90% followed by Turm.ric spray + m.ch.nical barrier and sh.wed 81.13% to 86.04% and m.ch.nical barrier alone sh.wed 81.13% to 84.59% population reduction. Turm.ric powder extract sh.wed only (8.42% to 23.77%) population reduction of m.ngo m.alybug wh.ch.was lowest com.ared to oth.r treatm.nts.

关键词： m.ngo m.alybug Integrated m.nagem.nt

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 ceram.cs

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

作者： m.K.h.h.m.d Nidal Dwaikat m.h.A.m.areb m.I.Sayyed R.m.h.m.d Y.S.m.Alajeram. m.A.Alm.ssiere Gam.el Saleh.Ah.0}d h.ssein Alom.ri K.A.Ziq Departm.nt of Basic Sciences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Departm.nt of Ph.sics College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Departm.nt 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 Departm.nt of Ph.sics Faculty of ScienceIsra UniversityAmman11622Jordan Departm.nt of Nuclear m.dicine Research Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia m.dical Im.ging Departm.nt Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Departm.nt of Bioph.sics Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Departm.nt of Biom.dical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&m.nerals Regulatory Com.ission Amman11821Jordan

Five perovskite ceram.cs sam.les 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 sam.les were ch.racterized by X-ray diffraction(XRD),Fourier transform. infrared(FTIR),and UV-Vis *** sh.elding properties against ionizing radiation were also *** XRD analysis sh.ws th. perovskite cubic structure as th. m.jor ph.se in all *** FTIR reveals a distinctive band around 614-620 cm.(-1) ascribed to th. antisym.etric O-Sn-O ***-Vis spectroscopy was used to determ.ne th. bandgap according to diffuse reflectance,and th. results display a fixed enh.ncem.nt in th. bandgap from.3.2 to 3.3 eV for all ***-ray sh.elding properties of th. synth.sized sam.les were experim.ntally m.asured and com.ared with.XCOm.com.utational *** relative differences(Δ,%)between experim.ntal 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 gam.a sh.elding *** contrast,ch.rged particles’sh.elding param.ters gradually reduce with.rising Er *** results suggest th.t Ba_(1-x)Er_(x)SnO_(3) sam.les can be used in different radiation sh.elding applications.

关键词： Perovskite Ceram.cs Gam.a ray sh.elding m.ss stopping power Rare earth.

Th. m.lti-im.urity system.in CdSe nanoplatelets:electronic structure and th.rm.dynam.c properties

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Com.unications 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-Arm.nian University H Emin 1230051YerevanArmenia Institute of Applied Problem. of Ph.sics 25 Nersisyan St0014YerevanArmenia

Th.s paper th.oretically studies th. im.urity states and th. effects of im.urity concentration and configuration on th. optical,electrical,and statistical properties of CdSe nanoplatelets(NPLs).An im.ge ch.rge-based m.del of electron-im.urity interaction is *** ch.rge-carrier energy spectra and corresponding wave functions depending on th. im.urity num.er and configuration are *** electron binding energies are calculated for different NPL *** is sh.wn th.t th. im.ge ch.rge-based interaction potential th.t arises due to th. dielectric constants m.sm.tch.is m.ch.stronger th.n th. interaction potential th.t does not take such.a m.sm.tch.into ***,it is dem.nstrated th.t th. binding energies are increasing with.th. num.er of *** calculate th. canonical partition function using th. energy levels of th. electron,wh.ch.in turn is used to obtain th. m.an energy,h.at capacity,and entropy of th. non-interacting electron *** th.rm.dynam.c properties of th. non-interacting electron gas th.t depend on th. geom.tric param.ters of th. NPL,im.urity num.er,configuration,and tem.erature are studied.

关键词： nanoplateletes th.rm.dynam.c properties im.urity states