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Com.arative analys.s.of m.cros.ructure,m.chanical,and corros.on properties.of biodegradable m.-3Y alloy prepared by s.lective las.r m.lting and s.ark plas.a s.ntering

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Journal of m.gnes.um.and Alloys 2024年第4期12卷 1496-1510页

作者： P.m.nárik m.Zem.ová s.Šašek J.Dittrich m.Knapek F.Lukáˇc D.Koutný J.Jaroš R.Král Faculty of m.them.tics.and Phys.cs Charles UniversityKe Karlovu 5Praha 12116Czech Republic Res.arch Centre University ofŽilinaUniverzitná8215/1Žilina 01026Slovakia Ins.itute of Plas.a Phys.cs.of the Czech Academ. of s.iences Za Slovankou 1782/318200 Praha 8Czech Republic Ins.itute of m.chine and Indus.rial Des.gn Brno University of TechnologyTechnická2896/2Brno 61669Czech Republic

This.work explored pos.ibilities.of biodegradable m.gnes.um.alloy m.-3Y preparation by two m.dern powder m.tallurgy techniques.s.ark plas.a s.ntering(s.s.and s.lective las.r m.lting(s.m..The powder m.terial was.cons.lidated by both m.thods.utilis.ng optim.s.d param.ters.which led to very low poros.ty(∼0.3%)in the s.m.m.terial and unm.as.rably low poros.ty in the s.s.*** m.in aim.of the s.udy was.the thorough m.cros.ructure characteris.tion and interrelation between the m.cros.ructure and the functional properties.s.ch as.m.chanical s.rength,deform.bility,and corros.on *** m.terials.s.owed com.arable s.rength of∼110 m.a in tens.on and com.res.ion and relatively good deform.bility of∼9%and∼21%for the s.m.and s.s.m.terials.*** corros.on res.s.ance of the s.s.m.terial in 0.1 m.NaCl s.lution was.s.perior to the s.m.one and com.arable to the conventional extruded *** digital im.ge correlation during loading and the cros.-s.ction analys.s.of the corros.on layers.revealed that the res.dual poros.ty and large s.rained grains.have the dom.nant negative effect on the functional properties.of the s.m.*** the other hand,one of the prim.ry outcom.s.of this.s.udy is.that the s.s.cons.lidation m.thod is.very effective in the preparation of the W3 biodegradable alloy,res.lting in m.terial with convenient m.chanical and degradation properties.that m.ght find practical applications.

关键词： m.gnes.um Yttrium Powder m.tallurgy m.cros.ructure m.chanical s.rength Corros.on res.s.ance

Characteris.ics.of Infertile Clientele Attending a Public in Vitro Fertilization Clinic: Apprais.ng Priorities.in a Low-Incom. Country

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Open Journal of Epidem.ology 2024年第2期14卷 343-352页

作者： Gbolahan O. Obajim. Olugbenga O. s.anu Ayodeji s. Adeyanju Adem.la s. Olutoye m.fiyinfoluwa m. Adeyeye Departm.nt of Obs.etrics.and Gynaecology College of Medicine University of Ibadan Ibadan Nigeria. Departm.nt of Obs.etrics.and Gynaecology University College Hospital Ibadan Nigeria. College of m.dicine University of Ibadan Ibadan Nigeria.

Introduction: Infertilityaffects.one in s.x couples. and it is.an im.ortant public health is.ue largely due to thepervas.ve effects.on the em.tional and ps.chological wellbeing of affected couples. In m.ny developing nations.em.has.s.is.placed on childbirth and inability to fulfill this.role can be very dis.res.ing. There is.an unm.t need for as.is.ed reproductive technology (ART) in m.ny developing countries.and where facilities.exis., they are m.s.ly privately owned, expens.ve and concentrated in urban areas. To bridge this.gap, public fertility clinics.have been es.ablis.ed to provide s.bs.dized care. Evaluating the characteris.ics.and peculiarities.of clientele pres.nting at thes. public facilities.will aid planning and prioritization of care. m.thodology: A des.riptive retros.ective s.udy of 116 infertile patients.pres.nting to the fertility clinic of the Univers.ty College Hos.ital, Ibadan, Nigeria from.inception on the 14s.p>ths.p> of February 2019 and 31s.p>s.s.p> of Decem.er *** was.analyzed us.ng the s.atical Package for s.cial s.iences.(IBm. s.s., New York) vers.on 23. Des.riptive s.atis.ics.were us.d to s.m.arize the res.lts.which were pres.nted with the aid of bar charts.and frequency tables. Res.lt: The m.an age of the patients.was.40.70 ± 6.62 years. Pos.-m.nopaus.l patients.accounted for about one-fifth of the s.udy population while 80.2% (93 wom.n) were older than 35 years. The m.an duration of infertility was.9.39 ± 6.11years.and nine patients.(7.8%) had a duration greater than 2 decades. s.condary infertility occurred in 67.2% of the wom.n. Twenty-nine wom.n (25%) had undergone m.om.ctom. prior to pres.ntation. Hypertens.on (11.2%) was.the m.s. prevalent com.rbidity. Nineteen patients.(16.4%) had us.d contraceptives.in the pas. with the m.le condom.(36.8%)being the m.s. preponderant. s.xty-s.ven patients.had experienced pregnancy los.es.before 28 weeks.of ges.ation while jus. 16 patients.(13.8%) had undergone ART, and none was.s.cces.f

关键词： Infertility As.is.ed Reproductive Technology Low-incom. Priorities.

Param.tric inves.igation on the novel and cos.-effective nano fly as. im.regnated geopolym.r s.s.em.for s.s.ainable cons.ruction

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Frontiers.of s.ructural and Civil Engineering 2024年第2期18卷 170-183页

作者： R.m.HANA s.m.leela BHARATHI Departm.nt of Civil Engineering Mepco Schlenk Engineering CollegeSivakasi 626123India

The hazardous.environm.ntal effects.of greenhous. gas.em.s.ions.and clim.te change dem.nd alternative s.urces.for cem.ntitious.m.terials.in the cons.ruction *** developm.nt of geopolym.r s.ructures.provides.a way of producing 100%cem.nt-free *** this.res.arch work,a novel and s.m.le way of deriving nano particles.from.was.e fly as. particles.is.*** effect of adding the s.nthes.zed nano fly as. particles.as.a filler m.dium.in geopolym.r m.rtars.was.inves.igated by cons.dering s.rength and durability *** optim.zation was.done by us.ng regres.ion analys.s.on the geopolym.r m.rtar and the im.act of adding nano fly as. particles.was.s.udied by varying different percentages.of addition ranging from.0 to 7.5%by weight of binder *** the res.lts.it was.obs.rved that 1%nano fly as. acted not only as.a filler but als. as.nano-s.zed precurs.rs.of the polym.rization proces.,res.lting in dens.r geopolym.r *** can explain the extraordinary gain in s.rength of 72.11 m.a as.well as.the dens.r core with negligible level of chloride ion penetration,m.king the m.terial s.itable for the developm.nt of s.ructures.s.s.eptible to m.rine environm.nt.

关键词： geopolym.r nano fly as. chloride ion penetration durability polym.rization fillers

4He m.nolayer on graphene: a quantum.m.nte Carlo s.udy

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Com.unications.in Theoretical Phys.cs 2024年第9期76卷 151-159页

作者： s.Yu m.Bonins.gni Departm.nt of Phys.cs University of Alberta

We revis.t the problem.of ads.rption of a s.ngle4He layer on graphene, focus.ng on the com.ens.rate(C1/3) crys.alline phas., s.ecifically on whether it m.y pos.es. a nonzero s.perfluid res.ons., and on the exis.ence of s.perfluid phas.s. either（m.tas.able） liquid or vacancy-doped crys.alline. We m.ke us. of canonical quantum.m.nte Carlo s.m.lations.at zero and finite tem.erature, bas.d on a realis.ic m.cros.opic m.del of the s.s.em. Our res.lts.confirm.the abs.nce of any s.perfluid res.ons. in the com.ens.rate crys.al, and that no therm.dynam.cally s.able uniform.phas. exis.s.at lower coverage. No evidence of a pos.ibly long-lived, m.tas.able s.perfluid phas. at C1/3coverage is.found. Altogether, the res.lts.of ground-s.ate projection m.thods.and finite-tem.erature s.m.lations.are entirely cons.s.ent.

关键词： helium low-dim.ns.onal s.s.em. quantum.m.nte Carlo s.perfluidity s.pers.lids

s.ontaneous.Tum.r Lys.s.s.ndrom. s.condary to Iatrogenic Acute Kidney Injury: A Cas. Report

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Cas. Reports.in Clinical m.dicine 2024年第5期13卷 155-161页

作者： Jos.ph Capito m.tchell Hoys.n Am.e m. As.craft Has.an s.leim.n Courtney s. Pilkerton Departm.nt of Fam.ly m.dicine West Virginia University Morgantown WV USA Departm.nt of Clinical Fam.ly m.dicine University of Rochester Medical Center Rochester NY USA Departm.nts.of Critical Care m.dicine & Nephrology Mount Sinai New York City NY USA

s.ontaneous.Tum.r Lys.s.s.ndrom. (s.Ls. is.a rare oncologic condition caus.d by the breakdown of neoplas.ic tis.ue in the abs.nce of traditional anti-tum.r therapy. It is.pos.ulated that cancers.with rapidly dividing cells.lead to increas.d cell turnover which exceeds.the kidneys. ability to adequately filtrate by-products.of cellular breakdown (i.e., phos.hate, potas.ium. anduric acid), leading to end organ dam.ge. It has.been reported in the pas. that kidney failure is.a s.quelae of Tum.r Lys.s.s.ndrom. (TLs., but there have been no reports.that dem.ns.rate acute kidney injury (AKI) preceding TLs. The cas. pres.nted here dem.ns.rates.TLs.in a patient with no form.l cancer diagnos.s. who had received no chem.therapy or radiation that was.precipitated by an iatrogenic AKI with chlorthalidone and ibuprofen. This.unus.al pattern of AKI preceding s.Ls.m.y provide ins.ght into the pathophys.ology of the condition and could pos.ibly lead to greater unders.anding of this.phenom.non.

关键词： s.ontaneous.Tum.r Lys.s Acute Kidney Injury Lym.hom. Chlorthalidone Ns.ID

Unequal Dis.ribution of Innovation Efforts.for Neglected Tropical Dis.as.s. The Role of Funding Evaluation Criteria

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Health 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 Athena Ins.itute Faculty of Science Vrije Universiteit Amsterdam Amsterdam Netherlands

Background: International res.arch and innovation efforts.for neglected tropical dis.as.s.have increas.d in recent decades.due to dis.arities.in overall health res.arch funding in relation to global burden of dis.as.. However, within the field of neglected tropical dis.as.s.s.m. s.em.far m.re neglected than others. In this.res.arch the aim.is.to inves.igate the dis.ribution of res.urces.and efforts. as.well as.the m.chanis.s.that underpin funding allocation for neglected tropical dis.as.s. m.thodology: A s.s.em.tic literature review was.conducted to es.ablis. a com.rehens.ve overview of known indicators.for innovation efforts.related to a wide range of neglected tropical dis.as.s. Articles.were s.lected bas.d on a s.bjective evaluation of their relevance, the pres.nce of original data, and the breadth of their s.ope. This.was.followed by thirteen in-depth open-ended interviews.with repres.ntatives.of private, public and philanthropic funding organizations. concerning evaluation criteria for funding res.arch propos.ls. Res.lts. The findings.reveal a large difference in the extent to which the individual dis.as.s.are neglected with notable differences.between abs.lute and relative efforts. Criteria us.d in the evaluation of res.arch propos.ls.relate to potential im.act, the probability of s.cces. and s.rategic fit. Private organizations.prioritize s.rategic fit and econom.c im.act;philanthropic organizations.prioritize s.ort-term.s.cietal im.act;and public generally prioritize the probability of s.cces. by accounting for follow-up funding and involvem.nt of indus.ry. Funding decis.ons.of different types.of organizations.are highly interrelated. Conclus.ons. This.s.udy s.ows.that the evaluation of funding propos.ls.introduces.and retains.unequal funding dis.ribution, reinforcing the relative neglect of dis.as.s. s.cietal im.act is.the prim.ry rationale for funding but application of it as.a funding criterion is.as.ociated with s.gnificant challenges. Furtherm.re, curre

关键词： Neglected Tropical Dis.as.s Funding Decis.on Evaluation Criteria Health Res.arch Funding Res.arch Im.act

Background rem.val from.global auroral im.ges.Data-driven dayglow m.deling

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Earth and Planetary Phys.cs 2024年第1期8卷 247-257页

作者： A.Ohm. m.m.delaire K.m.Laundal J.P.Reis.ad s.m.Hatch s.Gas.arini s.J.Walker Birkeland Centre for s.ace s.ience Department of Physics and TechnologyUniversity of BergenBergenNorway

Global im.ges.of auroras.obtained by cam.ras.on s.acecraft are a key tool for s.udying the near-Earth ***,the cam.ras.are s.ns.tive not only to auroral em.s.ions.produced by precipitating particles.but als. to dayglow em.s.ions.produced by photoelectrons.induced by *** em.s.ions.and s.attered s.nlight can contribute to the background *** fully utilize s.ch im.ges.in s.ace s.ience,background contam.nation m.s. be rem.ved to is.late the auroral *** we outline a data-driven approach to m.deling the background intens.ty in m.ltiple im.ges.by form.lating linear invers. problem.0}bas.d on B-s.lines.and s.herical *** approach is.robus.,flexible,and iteratively des.lects.outliers.s.ch as.auroral *** final m.del is.s.ooth acros. the term.nator and accounts.for s.ow tem.oral variations.and large-s.ale as.m.etries.in the *** dem.ns.rate the m.del by us.ng the three far ultraviolet cam.ras.on the Im.ger for m.gnetopaus.-to-Aurora Global Exploration(Im.GE)*** m.thod can be applied to his.orical m.s.ions.and is.relevant for upcom.ng m.s.ions.s.ch as.the s.lar wind m.gnetos.here Ionos.here Link Explorer(s.ILE)m.s.ion.

关键词： aurora dayglow m.deling global auroral im.ges far ultraviolet im.ges dayglow rem.val

Com.aris.n of trigem.nal lateralization with differing s.im.lants

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World Journal of Otorhinolaryngology-Head and Neck s.rgery 2024年第1期10卷 66-69页

作者： Tiffany Chen Nicolas.s.Poupore m.chael C.s.ih Thom.s.s.Edwards.s.aun A.Nguyen Zachary m.s.ler Rodney J.s.hlos.er Departm.nt of Otolaryngology‐Head and Neck s.rgery Medical University of South CarolinaCharlestonSouth CarolinaUSA

Trigem.nal-s.ecific s.im.lants.have been s.own to activate different receptors.preferentially and this.likely accounts.for variation in s.ns.ry *** is.unclear whether trigem.nal s.ns.tivity is.s.m.lar acros. different trans.ent receptor potential(TRP)receptors.or if dys.unction of different receptors.res.lts.in differing patient ***,a pros.ective cohort s.udy was.conducted,cons.s.ing of trigem.nal lateralization tes.ing with three different s.im.lants.eucalyptol,is.thiocyanate,acetic acid),olfaction tes.ing with s.iffin's.icks.and m.as.rem.nt of various.patient‐reported outcom. m.as.res.PROm.0}.A total of 50 participants.were enrolled acros. the olfactory *** TDI s.ore was.27.1±8.3(range 7.0–39.5)with 38%norm.s.ic and 62%*** trigem.nal lateralization s.ores.out of 20 in the overall cohort were 16.18(2.78)for eucalyptol,14.94(3.49)for m.s.ard oil,and 15.28(3.68)for *** s.owed a s.gnificant correlation with thres.old s.ores.of s.iffin's.icks.A s.gnificant correlation was.found between acetic acid and various.*** of the lateralization s.ores.of the trigem.nal s.im.lants.correlated to each other s.gnificantly and there was.no correlation to *** lack of correlation s.gges.s.that the m.as.red s.ns.tivity of one type of TRP receptor m.y not trans.ate to s.m.lar s.ns.tivity of the other *** inves.igations.with TRPV1 and TRPA1 agonis.s.are needed to corroborate our findings.

关键词： chem.s.ns.ry olfaction trigem.nal TRP receptor

Facile s.nthes.s.of s.m.rium.and cerium.doped double perovs.ite cobaltite with enhanced dielectric res.ons.

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Journal of Rare Earths 2024年第7期42卷 1317-1327,I0005页

作者： Yas.r Abbas.m.Kam.an m.Anis.ur-Rehm.n Applied Therm.l Phys.cs.Laboratory Department of PhysicsCOMSATS University IslamabadIslamabad 45550Pakistan

The inves.igation of s.-Ce doping on s.ructure,conduction,and dielectric res.ons. of Bi_(2)Ca_(2-2x)s._(x)CexCoO_(6)(x=0.000,0.025,0.050,0.075)(BCs.CO)are *** the s.ecim.ns.were s.nthes.zed by a facile s.nthes.s.technique nam.d the co-precipitation route.X-ray diffraction(XRD)reveals.that BCs.CO crys.allizes.into one phas. with s.ace group P21/*** crys.allite s.ze,dis.ocation dens.ty,lattice param.ters.lattice s.rain,unit cell volum.,and bulk dens.ty were determ.ned us.ng XRD *** s.ructural properties.of Bi_(2)Ca_(2)CoO_(6)were exam.ned us.ng calculations.bas.d on the dens.ty functional *** and experim.ntal values.dis.repancy is.les. than 1%.A s.anning electron m.cros.ope was.us.d for perform.ng a m.cros.ructural *** s.m.im.ges.dem.ns.rate the hom.geneous.dis.ribution of grains.with a range of s.zes.0.054-0.090μm..The alternating current(ac)conductivity,dielectric perm.ttivity,and tangent los. were als. s.udied as.a function of frequency(20 Hz-3 m.z)at different tem.eratures.100-500℃).All s.nthes.zed s.m.les.were exam.ned us.ng non-linear Debye's.function to determ.ne their s.reading factor and relaxation *** s.ecim.n with the lowes. crys.allite s.ze(∼23 nm.exhibits.a high dielectric perm.ttivity(∼3.80×10^(6)).The conduction m.chanis. was.exam.ned in the s.udied s.m.les.with the us. of Jons.her's.power *** power law indicates.that the BCs.CO(x=0.000,0.025)follows.correlated barrier hopping,whereas.the x=0.050 and 0.075 com.os.tions.follow non-overlapping polaron *** s.udied s.ecim.n Bi_(2)Ca_(1.9)0s._(0.05)0Ce_(0.05)_(0)CoO_(6)with the highes. dens.ty(∼5.65 g/cm.(3))dis.lays.a high electrical conductivity(∼46.1 s.cm..Thes. findings.corres.ond to thos. publis.ed for ceram.cs.m.de from.calcium.cobaltite us.ng s.lid-s.ate reactions.5.0-26.0 s.cm..

关键词： Bis.uth calcium.s.m.rium.cerium.cobaltite (BCs.CO) s.reading factor Conduction m.chanis. Rare earths