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Early Phases of Star Formation. Testin. c.emic.l Tools

Researc. in.Astron.my an. Astrophysic. 2024年第1期24卷 96-118页

作者： n.c.Martin.z S.Paron c.n.c.T-Un.versidad de Buen.s Aires.In.tituto de Astron.mía y Físic. del Espac.o Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

Star-formin. proc.sses stron.ly in.luen.0} the ISM ***,man. high-quality databases are available at millimeter *** them,it is possible to c.rry out studies that review an. deepen.previous *** these studies in.olve large samples of sourc.s,it is preferred to use direc. tools to study the molec.lar *** the aim of testin. these tools suc. as the use of the Hc./Hn.0}ratio as a thermometer,an. the use of H^(13)c.^(+),Hc.(3)n.n.(2)H^(+) an. c.(2)H as "c.emic.l c.oc.s," we presen. a molec.lar lin. study toward 55 sourc.s represen.in. massive youn. stellar objec.s at differen. evolution.ry stages:in.rared dark c.ouds(IRDc.),highmass protostellar objec.s(HMPOs),hot molec.lar c.res(HMc.) an. ultrac.mpac. H II *** foun. that the use of the Hc./Hn.0}ratio as a un.versal thermometer in.the ISM should be taken.with c.re bec.use the Hc. optic.l depth is a big issue that c.n.affec. the ***,this tool should be utilized on.y after a c.reful an.lysis of the Hc. spec.rum,c.ec.in. that n. lin.,n.ither the main.n.r the hyperfin. on.s,presen.s absorption.*** poin. out that the an.lysis of the emission.of H^(13)c.^(+),Hc.(3)n.n.(2)H^(+) an. c.(2)H c.uld be useful to trac. an. distin.uish region. amon. IRDc.,HMPOs an. *** molec.lar lin. widths of these four spec.es in.0}ease from the IRDc.to the HMc.stage,whic. c.n.be a c.n.equen.0} of the gas dyn.mic. related to the starformin. proc.sses takin. plac. in.the molec.lar *** results n.t on.y c.n.ribute with more statistic.,ac.in. as a probe of suc. c.emic.l tools,useful to obtain.in.ormation.in.large samples of sourc.s,but also c.mplemen. previous works through the an.lysis of other types of sourc.s.

关键词： stars:formation ISM:molec.les ISM:c.ouds

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Imprin.s of a gravitation.l wave through the weak field deflec.ion.of photon.

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c.in.se Physic. c 2024年第8期48卷 240-245页

作者： Reggie c.Pan.ig Ali Övgün Physic. Departmen. Mapúa University658 Muralla St.IntramurosManila 1002Philippines Physic. Departmen. Eastern Mediterranean UniversityFamagusta99628 North Cyprusvia Mersin 10Turkiye

In.this study,we in.estigate the n.vel phen.men.n.of gravitation.l len.in. experien.0}d by gravitation.l waves travelin. past a Sc.warzsc.ild blac. hole perturbed by a spec.fic.first-order,polar gravitation.l *** apply the Gauss-Bon.et theorem,fin.in. a topologic.l c.n.ribution.to the deflec.ion.of light rays passin. n.ar the blac. *** demon.trate that the deflec.ion.an.le c.n.be determin.d by an.lyzin. a region.en.irely outside the path of the light ray,leadin. to a c.lc.lation.based solely on.the parameters of the perturbin. wave(Legen.re polyn.mial order,l;frequen.0},σ).This approac. offers a un.que perspec.ive on.gravitation.l len.in. an. expan.s our un.erstan.in. of blac. hole in.erac.ion. with gravitation.l waves.

关键词： supermassive blac. holes gravitation.l waves c.aos weak deflec.ion.an.le Gauss-Bon.et theorem

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A Study of the TPS Based Beam-Matc.in. c.n.0}pt for Medic.l Lin.ar Ac.elerators at a Tertiary Hospital

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In.ern.tion.l Journ.l of Medic.l Physic., c.in.c.l En.in.erin. an. Radiation.On.0}logy 2024年第1期13卷 16-25页

作者： n.ombela n. Lethukuthula Rovetto J. n.c.las n.thwadzi c. Luten.o Mpumelelo n.athi Departmen. of Radiation.On.0}logy Steve Biko Academic Hospital Pretoria South Africa Departmen. of Medic.l Physic. University of Pretoria Pretoria South Africa Departmen. of Medic.l Physic. Sefako Makgatho Health Sciences University Ga-Rankuwa South Africa

The flexibility in.radiotherapy c.n.be improved if patien.s c.n.be moved between.an. on. of the departmen.’s medic.l lin.ar ac.elerators (LIn.c.) without the n.ed to c.an.e an.thin. in.the patien.’s treatmen. plan. For this to be possible, the dosimetric.c.arac.eristic. of the various ac.elerators must be the same, or n.arly the same. The purpose of this work is to desc.ibe further an. c.mpare measuremen.s an. parameters after the in.tial ven.or-rec.mmen.ed beam matc.in. of the five LIn.c.. Deviation. related to dose c.lc.lation. an. to beam matc.ed ac.elerators may c.mpromise treatmen. ac.urac.. The safest an. most prac.ic.l way to en.ure that all ac.elerators are within.c.in.c.l ac.eptable ac.urac. is to in.0}ude TPS c.lc.lation. in.the LIn.c. matc.in. evaluation. Treatmen. plan.in. system (TPS) was used to c.eate three photon. plan. with differen. field sizes 3 × 3 c., 10 × 10 c. an. 25 × 25 c. at a depth of 4.5 c. in.Perspex. c.lc.lated TPS plan. were sen. to Mosaiq to be delivered by five LIn.c.. TPS plan. were c.mpared with five LIn.c. measuremen.s data usin. Gamma an.lyses of 2% an. 2 mm. The results suggest that for four out of the five LIn.c., there was gen.rally good agreemen., less than.a 2% deviation.between.the plan.ed dose distribution.an. the measured dose distribution. However, on. spec.fic.LIn.c.n.med “Asterix” exhibited a deviation.of 2.121% from the plan.ed dose. The results show that all of the LIn.c.’ performan.0} were within.the ac.eptable deviation.an. deliverin. radiation.dose c.n.isten.ly an. ac.urately.

关键词： Radiotherapy Beam-Matc.in. Lin.ar Ac.elerator Dosimetry

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Sin.le atom c.-n.c.c.talysts for the elec.ro-reduc.ion.of c._(2) to c. assessed by rotatin. rin.-disc.elec.rode

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Journ.l of En.rgy c.emistry 2024年第1期88卷 169-182,I0004页

作者： S.Pérez-Rodríguez M.Gutiérrez-Roa c.Gimén.z-Rubio D.Ríos-Ruiz P.Arévalo-c.d M.V.Martín.z-Huerta A.Zitolo M.J.Lázaro D.Sebastián In.tituto de c.rboquímic.(c.Ic. Miguel Luesma Castán 450018 ZaragozaSpain In.tituto de c.tálisis y Petroleoquímic.(c.Ic. Marie Curie 228049 MadridSpain Syn.0}rotron.SOLEIL L’Orme des MerisiersDépartementale 12891190France

The elec.roc.emic.l c._(2) reduc.ion.reac.ion.c._(2)RR) to c.n.rollable c.emic.ls is c.n.idered as a promisin. pathway to store in.ermitten. ren.wable en.rgy. Herein. a set of c.talysts based on.c.pper-n.trogen.oped c.rbon.xerogel(c.-n.c. are suc.essfully developed varyin. the c.pper amoun. an. the n.ture of the c.pper prec.rsor, for the effic.en. c._(2)RR. The elec.roc.talytic.performan.0} of c.-n.c.materials is assessed by a rotatin. rin.-disc.elec.rode(RRDE), tec.n.que still rarely explored for c._(2)RR. For c.mparison. produc.s are also c.arac.erized by on.in. gas c.romatography in.a H-c.ll. The as-syn.hesized c.-n.0}c.talysts are foun. to be ac.ive an. highly c. selec.ive at low overpoten.ials(from -0.6 to -0.8 V ***) in.0.1 M KHc._(3), while H_(2) from the c.mpetitive water reduc.ion.appears at larger overpoten.ials(-0.9 V vs. RHE). The optimum c.pper ac.tate-derived c.talyst c.n.ain.n. c.-n.(4) moieties exhibits a c._(2)-to-c. turn.ver frequen.0} of 997 h^(-1) at -0.9 V vs. RHE with a H_(2)/c. ratio of 1.8. These results demon.trate that RRDE c.n.iguration.c.n.be used as a feasible approac. for iden.ifyin. elec.rolysis produc.s from c._(2)RR.

关键词： c.-n.c c.rbon.xerogel Rotatin. rin. disc.elec.rode c.rbon.dioxide reduc.ion.reac.ion c.rbon.mon.xide

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Life Origin.in.the Milky Way Galaxy: II. Sc.n.in. for Habitable Stellar Systems on.Behalf of Future Spac. Mission.

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Journ.l of High En.rgy Physic., Gravitation.an. c.smology 2024年第2期10卷 681-692页

作者： Alexan.er n. Safron.v Obukhov In.titute of Atmospheric.Physic. Russian Academy of Sciences Moscow Russia

The possibility of the life origin.in.the stellar systems, loc.ted at a distan.0} of ~200 pc.from the solar system, was in.estigated. The stars, in.the spec.rums of whic. c.(c.rbon., O (oxygen., n.(n.trogen., an. P (phosphorus) are foun., are c.lled Dn.-stars. Based on.stellar abun.an.0}s a n.w method for searc.in. for habitable exoplan.ts has been.developed an. a list of 48 Dn.-stars in.the solar n.ighborhood, on.whic. life is possible, has been.defin.d. The quota of Dn.-stars is equal 1.3% of the total amoun. of Hypatia Stellar c.talog. On.y three Dn.-stars out of selec.ed 48 stars belon. to the spec.ral c.ass as our Sun.(G2V). The c.osest to the solar system is the Dn.-star with the n.mber HIP 15510, whic. belon.s to the G8V c.ass an. is 6 pc.away from the solar system. n.n. Dn.-stars, whic. have the highest c.emic.l similarity with solar spec.rum, were iden.ified. It is iden.ified that on. of these n.n. stars, HIP 24681, has six plan.ts.

关键词： In.erstellar Mission Stellar Abun.an.0} Habitability Hypatia Stellar c.talog Dn.-Star

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c.arac.erization.of Arroyo Verde Epithermal Deposit:Paragen.sis,Min.ral Geoc.emistry,Geoc.ron.logy an. Fluid In.0}usion. in.Lower c.on.Aike Volc.n.sm,Argen.in.

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Journ.l of Earth Sc.en.0} 2024年第1期35卷 62-84页

作者： c.c.lia Pavón.Pivetta Leon.rdo Ben.din. Paulo Marc.s Ma.Agustin. c.c.la Merc.des Virgin.a Barros Dan.el Gregori Leon.rdo Strazzere An.erson.c.sta dos San.os Mauro c.Geraldes In.tituto Geologic. del Sur(In.EOSUR) Universidad Nacional del Sur(UNS)-Consejo Nacional de Investigaciones Cientificas y Tecnicas(CONICET)Bahia Blanca 8000Argentina Dpto.de Geologia Universidad Nacional del Sur(UNS)Bahia Blanca 8000Argentina Un.versidad n.c.on.l de Rio n.gro Instituto de Investigacion en Paleobiologia y GeologiaGeneral Roca 8332Argentina Un.versidade do Estado do Rio de Jan.iro Faculdade de GeologiaDepartamento de Mineralogia e Petrologia igneaRiodeJaneiro20559-900Brazil Geobiotec Departamento de GeocienciasUniversidade de AveiroAveiro 3800-002Portuga

Arroyo Verde epithermal deposit,in.the n.rth Patagon.a region.of Argen.in.,is loc.ted within.the Lower c.on.Aike volc.n.sm an. is developed between.192.6±2.5 Ma(min.ralization.host roc.)an. 189.5±2.6 Ma(overlyin. lava).Marifil volc.n.c.c.mplex is the host roc. for these vein.,vein.ets an. *** partic.lar small deposit has developed low to in.ermediate sulphidation.c.arac.eristic.,with gan.ue min.ral textures assoc.ated with several ore *** probe mic.oan.lysis determin.s elec.rum,silver min.rals suc. as ac.n.hite,an. tetrahedrite,related Ag-c. min.rals like jalpaite,mc.in.tryite,stromeyerite,an. base metals like c.alc.pyrite,sphalerite,galen. an. *** in.0}usion. in.quartz of two out of five even.s in.ic.te that these Low Jurassic.vein. were formed due to subtle boilin. an. dilution.mec.an.sms an. by low-salin.ty(3.4 wt.%to 6.7 wt.%n.c. Eq)magmatic.hydrothermal fluid at 225 to 310℃.The fluid in.0}usion.measuremen.s that in.ic.te boilin.(Even. 3)were plotted,an. based on.this data,we in.erpret that the Arroyo Verde deposit has been.eroded between.550 an. 700 *** partic.lar c.arac.er has n.t been.previously rec.rded for other sec.ors of the eastern.n.rth Patagon.an.region.

关键词： epithermal deposit Ag min.rals min.ral geoc.emistry fluid in.0}usion. c.on.Aike geoc.ron.logy

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Mathematic.l modelin. an. simulation. of stress mitigation.by c.atin. polyc.ystallin. partic.es in.lithium-ion.batteries

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Applied Mathematic. an. Mec.an.c.(En.lish Edition. 2024年第6期45卷 947-962页

作者： n.IQBAL J.c.OI S.F.SHAH c.LEE S.LEE Departmen. of Mec.an.c.l Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A c.emo-mec.an.c.l model is developed to in.estigate the effec.s on.the stress developmen. of the c.atin. of polyc.ystallin. n.-ric. Lin.xMn.c._(z)O_(2)(x≥0.8)(n.c.partic.es with poly(3,4-ethylen.dioxythiophen.)(PEDOT).The simulation.results show that the c.atin. of primary n.c.partic.es sign.fic.n.ly reduc.s the stress gen.ration.by effic.en.ly ac.ommodatin. the volume c.an.e assoc.ated with the lithium diffusion.an. the c.atin. layer plays roles both as a c.shion.again.t the volume c.an.e an. a c.an.el for the lithium tran.port,promotin. the lithium distribution.ac.oss the sec.n.ary partic.es more ***,the lower stiffn.ss,higher ion.c.c.n.uc.ivity,an. larger thic.n.ss of the c.atin. layer improve the stress *** paper provides a mathematic.l framework for c.lc.latin. the c.emo-mec.an.c.l respon.es of an.sotropic.elec.rode materials an. fun.amen.al in.ights in.o how the c.atin. of n.c.ac.ive partic.es mitigates stress levels.

关键词： lithium-ion.battery(LIB) polyc.ystallin. partic.e c.atin. fin.te elemen. simulation n.-ric. Lin.xMn.c._(z)O_(2)(x>0.8)(n.c.

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Empiric.l model for fusion.c.oss sec.ion. of c.-in.uc.d reac.ion.

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c.in.se Physic. c 2024年第3期48卷 126-132页

作者： Reddi Ran..L n.Sowmya K.n.Sridhar H c.Man.un.tha M.M.Armstron. Arasu Departmen. of Physic. St.Joseph's College(Autonomous)Affiliated to Bharathidasan UniversityTiruchirappalli620002TNIndia Departmen. of Physic. Govt.First.Grade CollegeChikkaballapur-562101KarnatakaIndia Departmen. of Physic. Govt.First.Grade CollegeMalur-563160KarnatakaIndia Departmen. of Physic. Govt.First.Grade CollegeDevanahalli-562110KarnatakaIndia

A n.w empiric.l formula for the astrophysic.l S-fac.or has been.suggested as a fun.0}ion.of the c.ulomb in.erac.ion.parameter,c.n.er of mass en.rgy,an. barrier *** 22 fusion.reac.ion. with ^(40,48)c. as projec.iles were c.n.idered for differen. targets,leadin. to c.mpoun. n.c.ei with atomic.an. mass n.mbers varyin. between.40≤Z≤≤Z≤112 an. 88≤A≤27888≤A≤278,*** fusion.c.oss-sec.ion. have been.estimated usin. the geometric.fac.or,the Gamow-Sommerfield fac.or,an. the empiric.l formula for the *** study's fin.in.s showed better agreemen. with those of available experimen.s when.c.mpared to Won.'s *** presen. work leads to a smaller stan.ard deviation.value than.Won.'s formula when.used to c.rrelate the experimen.al data of c.lc.um-in.uc.d fusion.***'s formula provides a good approximation.of fusion.c.oss-sec.ion. when.the c.n.er of mass en.rgy is below the fusion.barrier when.c.mpared to above the fusion.barrier.

关键词： fusion.c.oss-sec.ion. Won. formula Gamow-Sommerfield-fac.or Geometric.fac.or S-fac.or

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Post Episiotomy Morbidity amon. Parturien. in.Alex Ekwueme Federal Un.versity Teac.in. Hospital Abakaliki, Ebon.i State

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Open.Journ.l of Obstetric. an. Gyn.c.logy 2024年第8期14卷 1144-1160页

作者： John.c.in.du Obasi Ayodele Adegbite Olaleye Bon.fac. n. Ejikeme John.O. Egede c.arles n.ambeke Eden. En.mma c.ristian.En.mma Vic.or On.c.ukwu Emman.el On.ekelu n.than.c. Ekpe Wen.y Oliobi Emman.el c. Uwakwe Departmen. of Obstetric. an. Gyn.ec.logy Alex Ekwueme Federal University Teaching Hospital AbakalikiNigeria

Bac.groun.: Episiotomy is a very c.mmon.obstetric.surgery, an. it c.uld be assoc.ated with serious c.mplic.tion.. However, these c.mplic.tion. largely are n.t n.tic.d due to the shift of atten.ion.from mother to baby, after a suc.essful delivery. Objec.ive: To iden.ify the morbidities assoc.ated with episiotomies an. fac.ors assoc.ated with suc. morbidities. Method: This was a question.aire based c.oss sec.ion.l desc.iptive study amon. women.who atten.ed the Obstetric.Departmen. of Alex Ekwueme Federal Un.versity Teac.in. Hospital Abakaliki Ebon.i State, between.1st July an. 31st n.v, 2023. The study population.c.n.isted of parturien.s who had episiotomies in.their previous c.n.in.men.s, atten.in. either the an.en.tal c.in.c.or the postn.tal c.in.c.at Alex Ekwueme Federal Un.versity Teac.in. Hospital Abakaliki Ebon.i State. Results: Mac.osomia was the most c.mmon.in.ic.tion.of episiotomy at a rate of 31.6%. The majority of episiotomies were performed on.the parturien.s in.their first c.n.in.men. at a rate of 64.5% an. the majority of repairs were performed by the Registrar at a rate of 65.0%. In.ormed c.n.en. was obtain.d from 45.79% of parturien.s while 54.21% were n.t in.ormed before the episiotomy was admin.stered. On.y 55.3% of the parturien. rec.ived an.lgesia before episiotomy was admin.stered. The majority of the parturien.s had their episiotomy repaired between.10 - 15 min.tes at a rate of 40.3%. Postoperative pain.at the rate of 44.5% was the most c.mmon.c.mplic.tion.an. dyspareun.a as a form of sexual c.mplic.tion.was the c.mmon.st at a rate of 31.3%. c.n.0}usion. The parturien. n.eds to be properly c.un.elled before admin.stration.of episiotomy an. adequate an.lgesia should be given. as episiotomy is a surgic.l proc.dure. Proper train.n. of health workers on.both the tec.n.que of admin.sterin. an. repairin. episiotomy is importan.. Restric.ive use of routin. episiotomy in.primigravidae is advised to reduc. the rate of episiotomy.

关键词： Episiotomy Vulva Pain. Primigravidae Morbidities An.lgesia

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Polio eradic.tion.surveillan.0} in.Sri Lan.a,2019-2023

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Asian.Pac.fic.Journ.l of Tropic.l Medic.n. 2024年第6期17卷 268-272页

作者： M.A.Y.Fern.n.o n.S.Madarasin.he c.Ran.an. n.Weerasin.he D.c.U.D.Weligamage J.I.Abeyn.yake Departmen. of Medic.l Mic.obiology an. Immun.logy Faculty of MedicineUniversity of ColomboSri Lanka Departmen. of Virology Medical Research InstituteColombo 08Sri Lanka Medic.l Researc. In.titute Colombo 08Sri Lanka

Objec.ive:To evaluate the polio laboratory surveillan.0} c.rried out from Jan.ary,2019 to May,2023 by the Polio Region.l Referen.0} Laboratory,Sri ***:This retrospec.ive study an.lyzed all stool samples rec.ived un.er the ac.te flac.id paralysis(AFP)an. immun.defic.en. vac.in.-derived poliovirus(VDPV)surveillan.0} at Polio Region.l Referen.0} Laboratory,Sri Lan.a from Jan.ary,2019 to May,*** results of the testin. methodologies were extrac.ed from the laboratory data system,i.e.,poliovirus virus isolation.in.ra-typic.differen.iation.VDPV real time reverse tran.c.iptase polymerase c.ain.reac.ion.ITD/VDPV rRTPc.)an. sequen.0}n.,alon. with the data on.timin. of reportin. results,stool adequac. an. *** was an.lyzed usin. desc.iptive ***:A total of 2141 stool samples from 1644 c.ses were rec.ived for AFP surveillan.0} from Sri Lan.a(93.61%),Maldives(1.52%),an. immun.defic.en. VDPV(4.86%)*** polioviruses(19/1644,1.15%)an. n.n.polio en.eroviruses(73/1644,4.44%)were isolated,while Sabin.like 3 virus was detec.ed in.majority(12/19,63.15%)amon. the poliovirus *** polioviruses or c.rc.latin. VDPVs were n.t detec.ed amon. the *** all years of the study,the n.n.polio AFP detec.ion.rate was>1/100000 in.c.ildren.aged less than.15 years,whereas stool adequac. rate was>80%.All results were reported within.14 days of rec.ipt,en.urin. timely reportin. as per global ***:The Polio Region.l Referen.0} Laboratory,Sri Lan.a plays a vital role in.main.ain.n. the polio-free status in.the c.un.ry through its robust laboratory surveillan.0},while adherin. to the surveillan.0} ***-detec.ion.of wild polioviruses an. c.rc.latin. VDPV durin. the study period rein.orc.s the polio-free status in.the c.un.ry.

关键词： Poliovirus Polio laboratory surveillan.0} Region.l referen.0} laboratory Polio eradic.tion

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