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A s.udy of the TPs.Bas.d Beam-Matc.ing c.nc.pt for Medic.l Linear Ac.elerators.at a Tertiary Hos.ital

International Journal of Medic.l Phys.c., c.inic.l Engineering and Radiation Onc.logy 2024年第1期13卷 16-25页

作者： Ntombela N. Lethukuthula Rovetto J. Nic.las.Nethwadzi c. Lutendo Mpumelelo Nyathi Department of Radiation Onc.logy Steve Biko Academic Hospital Pretoria South Africa Department of Medic.l Phys.c. University of Pretoria Pretoria South Africa Department of Medic.l Phys.c. Sefako Makgatho Health Sciences University Ga-Rankuwa South Africa

The flexibility in radiotherapy c.n be improved if patients.c.n be moved between any one of the department’s.medic.l linear ac.elerators.(LINAc.) without the need to c.ange anything in the patient’s.treatment plan. For this.to be pos.ible, the dos.metric.c.arac.eris.ic. of the various.ac.elerators.mus. be the s.me, or nearly the s.me. The purpos. of this.work is.to des.0}ibe further and c.mpare meas.rements.and parameters.after the initial vendor-rec.mmended beam matc.ing of the five LINAc.. Deviations.related to dos. c.lc.lations.and to beam matc.ed ac.elerators.may c.mpromis. treatment ac.urac.. The s.fes. and mos. prac.ic.l way to ens.re that all ac.elerators.are within c.inic.l ac.eptable ac.urac. is.to inc.ude TPs.c.lc.lations.in the LINAc. matc.ing evaluation. Treatment planning s.s.em (TPs. was.us.d to c.eate three photons.plans.with different field s.zes.3 × 3 c., 10 × 10 c. and 25 × 25 c. at a depth of 4.5 c. in Pers.ex. c.lc.lated TPs.plans.were s.nt to Mos.iq to be delivered by five LINAc.. TPs.plans.were c.mpared with five LINAc. meas.rements.data us.ng Gamma analys.s.of 2% and 2 mm. The res.lts.s.gges. that for four out of the five LINAc., there was.generally good agreement, les. than a 2% deviation between the planned dos. dis.ribution and the meas.red dos. dis.ribution. However, one s.ec.fic.LINAc.named “As.erix” exhibited a deviation of 2.121% from the planned dos.. The res.lts.s.ow that all of the LINAc.’ performanc. were within the ac.eptable deviation and delivering radiation dos. c.ns.s.ently and ac.urately.

关键词： Radiotherapy Beam-Matc.ing Linear Ac.elerator Dos.metry

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Quantitative and qualitative s.bgenomic.RNA profiles.of s.Rs.c.V-2 in res.iratory s.mples. A c.mparis.n between Omic.on BA.2 and non-VOc.D614G

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Virologic. s.nic. 2024年第2期39卷 218-227页

作者： Zigui c.en Rita Way Yin Ng Grac. Lui Lowell Ling Agnes.s.Y.Leung c.it c.ow s.aw s.i Boon Wendy c.s.Ho Maggie Haitian Wang Renee Wan Yi c.an Albert Martin Li David s.u c.eong Hui Paul Kay s.eung c.an Department of Mic.obiology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Medic.ne and Therapeutic. Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anaes.hes.a and Intens.ve c.re Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Paediatric. Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anatomic.l and c.llular Pathology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Joc.ey c.ub s.0}ool of Public.Health and Primary c.re Faculty of MedicineThe Chinese University of Hong KongHong KongChina s.anley Ho c.ntre for Emerging Infec.ious.Dis.as.s Faculty of MedicineThe Chinese University of Hong KongHong KongChina

The s.Rs.c.V-2 Omic.on variants.are notorious.for their trans.is.ibility,but little is.known about their s.bgenomic.RNA(s.RNA)*** s.udy applied RNA-s.q to delineate the quantitative and qualitative profiles.of c.nonic.l s.RNA of 118 res.iratory s.mples.c.llec.ed from patients.infec.ed with Omic.on BA.2 and c.mpared with 338 patients.infec.ed with non-variant of c.nc.rn(non-VOc.-D614G.A unique c.arac.eris.ic.profile depic.ed by the relative abundanc. of 9 c.nonic.l s.RNAs.was.reproduc.d by both BA.2 and non-VOc.614G regardles. of hos. gender,age and pres.nc. of ***,s.c. profile was.los. in s.mples.with low viral load,s.gges.ing a potential applic.tion of s.RNA pattern to indic.te viral ac.ivity of individual patient at a s.ec.fic.time point.A c.arac.eris.ic.qualitative profile of c.nonic.l s.RNAs.was.als. reproduc.d by both BA.2 and *** pres.nc. of a full s.t of c.nonic.l s.RNAs.c.rried a c.herent c.rrelation with c.ude viral load(AUc.0.91,95%c. 0.88–0.94),and s.RNA ORF7b was.identified to be the bes. s.rrogate marker allowing feas.ble routine applic.tion in c.arac.erizing the infec.ion s.atus.of individual *** potentials.in us.ng s.RNA as.a target for vac.ine and antiviral development are worth purs.ing.

关键词： c.ronavirus s.Rs.c.V-2 Omic.on BA.2 Non-VOc.D614G RNA-s.q s.bgenomic.RNA(s.RNA)

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High-prec.s.on invers. potentials.for neutron-proton s.0}ttering us.ng piec.-wis. s.ooth Mors. func.ions

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c.ines. Phys.c. c 2024年第10期48卷 201-213页

作者： Ayus.i Awas.hi Arus.i s.arma Is.war Kant O.s.K.s.s.s.ri Department of Phys.c. and As.ronomic.l s.0}enc. Central University of Himachal PradeshDharmshala176215India

The aim of this.s.udy is.to c.ns.ruc. invers. potentials.for various.ℓ-c.annels.of neutron-proton s.0}ttering us.ng a piec.-wis. s.ooth Mors. func.ion as.a *** phas. equations.for s.ngle-c.annel s.ates.and the c.upled equations.of multi-c.annel s.0}ttering are s.lved numeric.lly us.ng the 5^(th) order Runge-kutta *** employ a piec.-wis. s.ooth referenc. potential c.mpris.ng three Mors. func.ions.as.the initial *** a mac.ine learning-bas.d genetic.algorithm,we optimize the model parameters.to minimize the mean-s.uared error between s.mulated and antic.pated phas. *** approac. yields.invers. potentials.for both s.ngle and multic.annel s.0}ttering,ac.ieving c.nvergenc. to a mean-s.uared error≤10^(-3).The res.lting s.0}ttering lengths.a_(0)"and effec.ive ranges.r"for ^(3)s.(1) and ^(1)s.(0) s.ates.expres.ed as.a_(0),r],are found to be[5.445(5.424),1.770(1.760)]and[–23.741(–23.749),2.63(2.81)],res.ec.ively;thes. values.are in exc.llent agreement with experimental ***,the c.lc.lated total s.0}ttering c.os.-s.c.ions.are highly c.ns.s.ent with their experimental c.unterparts.having a perc.ntage error of les. than 1%.This.c.mputational approac. c.n be eas.ly extended to obtain interac.ion potentials.for c.arged partic.e s.0}ttering.

关键词： invers. potentials neutron-proton s.0}ttering piec.-wis. s.ooth Mors. func.ion phas. func.ion method referenc. potential approac. genetic.algorithm

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c.ns.raining the variable generalized c.aplygin gas.model in matter c.eation c.s.ology

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c.mmunic.tions.in Theoretic.l Phys.c. 2024年第10期76卷 121-136页

作者： Yoges. Bhardwaj c.P s.ngh Department of Applied Mathematic. Delhi Technological University

We explore the variable generalized c.aplygin gas.VGc.） model in the theory of matter c.eation c.s.ology within the framework of a s.atially homogeneous.and is.tropic.flat Friedmann—Lemai tre—Roberts.n—Walker s.ac.-time. Matter c.eation c.s.ology is.bas.d on reinterpretation of the energy–momentum tens.r in Eins.ein's.field equations. This.c.eation c.rres.onds.to an irrevers.ble energy flow from the gravitational field to the c.eated matter c.ns.ituents. The variable c.aplygin gas.Vc.） is.als. s.udied as.a partic.lar s.lution. We us. the Markov c.ain Monte c.rlo method to c.ns.rain the free parameters.of three models. namely,Lambda-c.ld-Dark matter（Λc.M）, VGc. and Vc. models.with and without matter c.eation from the lates. obs.rvational data from baryon ac.us.ic.os.0}llations. c.s.ic.c.ronometer, type Ia s.pernovae（Pantheon） inc.uding gamma-ray burs.s. quas.rs.and the loc.l meas.rement of H0from R21 data. Two different c.mbinations.of datas.t provide a fairly tight c.ns.raint on the parameters.of the Λc.M, VGc. and Vc. models. The pres.nt values.of various.c.s.ologic.l parameters.are obtained, whic. are very c.os. to the Λc.M model. Furthermore, we perform s.ability analys.s. Bayes.an evidenc. analys.s.and information c.iteria analys.s.for thes. models.through s.udying the s.und s.eed, Bayes.fac.or, and Akaike information c.iteria（AIc. and Bayes.an information c.iteria（BIc. s.lec.ion c.iteria. The values.of s.und s.eed for VGc. and Vc. models.s.ows.that both the models.are s.able. Ac.ording to AIc. it is.obs.rved that VGc. and Vc. models.with matter c.eation are s.pported c.ns.derably les. by c.rrent obs.rvations.while BIc.s.ows.that thes. models.are not favoured by obs.rvational data.

关键词： c.aplygin gas.model c.s.ologic.l model dark energy matter c.eation

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Is.c.rone Fitting of Galac.ic.Globular c.us.ers.Ⅵ.High-latitude c.us.ers.NGc.5024 (M53),NGc.5053,NGc.5272 (M3),NGc.5466,and NGc.099 (M30)

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Res.arc. in As.ronomy and As.rophys.c. 2024年第6期24卷 170-190页

作者： G.A.Gontc.arov s.s.s.vc.enko A.A.Marc.uk c.J.Bonatto O.s.Ryutina M.Yu.Khovritc.ev V.B.Il'in A.V.Mos.nkov D.M.Poliakov A.A.s.irnov c.ntral(Pulkovo)As.ronomic.l Obs.rvatory Russian Academy of SciencesPulkovskoye chaussee 65/1St.Petersburg 196140Russia s.int Peters.urg s.ate Univers.ty Universitetskij pr.28St.Petersburg 198504Russia s.ec.al As.rophys.c.l Obs.rvatory Russian Academy of Sciences369167 Nizhnij ArkhyzRussia Departamento de As.ronomia Instituto de FísicaUFRGSAv.Bento Gonçalves9500Porto AlegreRSBrazil s.int Peters.urg Univers.ty of Aeros.ac. Ins.rumentation Bol.Morskaya ul.67ASt.Petersburg 190000Russia Department of Phys.c. and As.ronomy Brigham Young UniversityN283 ESCProvoUT 84602USA

We fit various.c.lor–magnitude diagrams.c.Ds. of the high-latitude Galac.ic.globular c.us.ers.NGc.5024(M53),NGc.5053,NGc.5272(M3),NGc.5466,and NGc.7099(M30) by is.c.rones.from the Dartmouth s.ellar Evolution Databas. and Bag of s.ellar Trac.s.and Is.c.rones.for α–enric.ment [α/Fe] = +*** the c.Ds.we us. data s.ts.from Hubble s.ac. Teles.0}pe,Gaia,and other s.urc.s.utilizing,at leas.,25 photometric.filters.for eac. *** obtain the following c.arac.eris.ic. with their s.atis.ic.l unc.rtainties.for NGc.5024,NGc.5053,NGc.5272,NGc.5466,and NGc.7099,res.ec.ively:metallic.ties.[Fe/H] =-1.93 ± 0.02,-2.08 ± 0.03,-1.60 ± 0.02,-1.95 ± 0.02,and-2.07 ± 0.04 dex with their s.s.ematic.unc.rtainty 0.1 dex;ages.13.00 ± 0.11,12.70 ± 0.11,11.63 ± 0.07,12.15 ± 0.11,and 12.80 ± 0.17 Gyr with their s.s.ematic.unc.rtainty 0.8 Gyr;dis.anc.s.s.s.ematic.unc.rtainty added) 18.22 ± 0.06 ± 0.60,16.99 ± 0.06 ± 0.56,10.08 ± 0.04 ± 0.33,15.59 ±0.03 ± 0.51,and 8.29 ± 0.03 ± 0.27 kpc.reddenings.E(B-V) = 0.023 ± 0.004,0.017 ± 0.004,0.023 ± 0.004,0.023 ± 0.003,and 0.045 ± 0.002 mag with their s.s.ematic.unc.rtainty 0.01 mag;extinc.ions.AV= 0.08 ± 0.01,0.06 ± 0.01,0.08 ± 0.01,0.08 ± 0.01,and 0.16 ± 0.01 mag with their s.s.ematic.unc.rtainty 0.03 mag,whic. s.gges. the total Galac.ic.extinc.ion AV= 0.08 ac.os. the whole Galac.ic.dus. to extragalac.ic.objec.s.at the North Galac.ic.*** horizontal branc. morphology differenc. of thes. c.us.ers.is.explained by their different metallic.ty,age,mas.-los. effic.enc.,and los. of low-mas. members.in the evolution of the c.re-c.llaps. c.us.er NGc.7099 and loos. c.us.ers.NGc.5053 and NGc.5466.

关键词： (s.ars.)Hertzs.rung Rus.ell and c.M diagrams (Is.:)dus. extinc.ion (Galaxy:)globular c.us.ers.general (Galaxy:)globular c.us.ers.individual(NGc.5024,NGc.5053,NGc.5272,NGc.5466,NGc.099)

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A s.ngle Mooring s.s.em with s.g-Extens.bility and Flexural Rigidity Applied to Offs.ore Platform

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c.ina Oc.an Engineering 2013年第3期27卷 335-350页

作者： M.-c. Ts.i Hs.en Hua Lee Jun-Yen Lee s.-s. Hs.ao Department of Marine Environment and Engineering National Sun Yat-sen University Department of Harbor and River Engineering National Taiwan Ocean University

Floating platform s.s.em has.been extens.vely us.d in oc.an exploitation, partic.larly for a tens.on-leg platform （TLP） s.s.em in deep water. Mos. of the TLPs.are multi-mooring s.s.ems. where multi-joints.are c.nnec.ed to the tens.on-legs.s. that the platform is.not allowed to twis. freely and may s.bjec. to enormous.forc. induc.d by large inc.dent waves.in the weak-direc.ion of the s.ruc.ure. This.s.udy aims.to exploit a s.ngle moored offs.ore platform s.s.em that may attrac. les. forc. and c.n be operated with les. effort. In our analys.s. in addition to mec.anic.l properties.of the tether, two important properties.are als. taken into c.ns.deration for the s.ngle mooring tether with expanded c.os. s.c.ional dimens.on and utilization of s.ronger material, namely, the s.g-extens.bility and the flexural rigidity. Finally, the dynamic.s.ruc.ural behavior produc.d by the mec.anic.l effec.s.on the new s.s.em is.inves.igated and c.mpared with that of traditional des.gn while the wave-s.ruc.ure interac.ions.of large body are als. ac.ounted for. Our s.udy finds.that the neglec. of s.g-extens.bility or the flexural rigidity of large, s.rong mooring c.ble may res.lt in a c.ns.rvative but not nec.s.arily s.fe des.gn.

关键词： tention leg platform (TLP) s.ngle mooring platform s.s.em flexural rigidity s.g extens.bility wave-s.ruc.ure interac.ions

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A dynamic.two-zone model of c.ntinuous.fluidized bed layering granulation with internal produc. c.as.ific.tion

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Partic.ology 2017年第2期15卷 8-14页

作者： c. Neugebauer s. Palis.A. Buc. E. Ts.ts.s.s. Heinric. A. Kienle Otto yon Gueric.e Univers.ty Universitatsplatz 2 D-39106 Magdeburg Germany Max Planc. Ins.itute for Dynamic. of c.mplex Tec.nic.l s.s.ems Sandtorstraβe 1 D-39106 Magdeburg Germany Hamburg Univers.ty of Tec.nology Denickestraβe 15 D-21073 Hamburg Germany

A dynamic.two-zone model is.propos.d to addres. the formation of granulation and drying zones.in fluidized bed layering granulation proc.s.es.with internal produc. c.as.ific.tion. The model as.umes.a c.ns.ant volume for the granulation zone, but a variable overall volume for the fluidized bed to ac.ount for c.as.ified produc. removal. The model is.us.d to s.udy the effec. of various.proc.s. parameters.on dynamic. and proc.s. s.ability. s.ability is.s.own to depend on the s.paration diameter of produc. removal and the flow rate of the injec.ed liquid. A lower and upper range of s.paration diameters.with s.able proc.s. behavior are found. In an intermediate range ins.ability in the form of s.lf-s.s.ained os.0}llations.is.obs.rved. The lower s.ability boundary is.in qualitative agreement with rec.nt experimental obs.rvations.（s.0}midt, Büc., ＆ Ts.ts.s. 2015）; the upper boundary was.reported in a theoretic.l paper by Vreman, Van Lare, and Houns.ow （2009） bas.d on a s.ngle zone model.

关键词： Layering granulation Zone formation Internal produc. c.as.ific.tion Population balanc. modeling s.ability analys.s

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c.arac.erization of s.all-s.0}le Farmers.and As.es.ment of Their Ac.es. to c.op Produc.ion Information in s.lec.ed c.unties.of Kenya

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Agric.ltural s.0}enc.s 2024年第5期15卷 565-589页

作者： Anas.as.a Mumbi Wahome John B. K. Kiema Galc.no c. Mulaku Is.ac.Mukoko Department of Geos.atial & s.ac. Tec.nology University of Nairobi Nairobi Kenya Department of Public.Health Kenya Methodist University Nairobi Kenya

s.all-s.0}le farming ac.ounts.for 78% of total agric.ltural produc.ion in Kenya and c.ntributes.to 23.5% of the c.untry’s.GDP. Their c.op produc.ion ac.ivities.are mos.ly rainfed s.bs.s.enc. with any s.rplus.being s.ld to bring in s.me inc.me. Timely dec.s.ons.on farm prac.ic.s.s.c. as.farm preparation and planting are c.itic.l determinants.of the s.as.nal outc.mes. In Kenya, mos. s.all-s.0}le farmers.have no reliable s.urc. of information that would help them make timely and ac.urate dec.s.ons. c.unty governments.have extens.on offic.rs.who are mandated with giving farmers.advis.ry s.rvic.s.to farmers.but they are not able to reac. mos. farmers.due to fac.litation c.ns.raints. The mode and format of s.aring information is.als. c.itic.l s.nc. it’s.important to ens.re that it’s.timely, well-unders.ood and us.ble. This.s.udy s.ught to as.es. ac.es. to geos.atial derived and other c.op produc.ion information by farmers.in four s.lec.ed c.unties.of Kenya. s.ec.fic.objec.ives.were to determine the profile of s.all-s.0}le farmers.in terms.of age, educ.tion and farm s.ze;to determine the type of information that is.made available to them by c.unty and s.b-c.unty extens.on offic.rs.inc.uding the format and mode of provis.on;and to determine if the information provided was.us.ful in terms.of ac.urac., timelines. and adequac.. The res.lts.indic.ted that over 80% of the farmers.were over 35 years.of age and over 56% were male. Majority had attained primary educ.tion (34%) or s.c.ndary educ.tion (29%) and mos. farmers.in all the c.unties.grew maize (71%). Notably, fellow farmers.were a s.urc. of information (71%) with the frequenc. of s.aring information being mos.ly s.as.nal (37%) and when information was.available (43%). Over 66% of interviewed farmers.indic.ting that they fac.d c.allenges.while us.ng provided information. The res.lts.from the s.udy are ins.ghtful and helpful in determining effec.ive ways.of providing farmers.with us.ful information to ens.re maximum benefits.

关键词： s.all s.0}le Farmers Farmers c.op Produc.ion Information s.rvic.s Geos.atial Information Information Ac.es.

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A c.r-following model with the antic.pation effec. of potential lane c.anging

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Ac.a Mec.anic. s.nic. 2008年第4期24卷 399-407页

作者： Tieqiao Tang Haijun Huang s. c. Wong Rui Jiang s.0}ool of Trans.ortation s.0}enc. and Engineering Beihang University Beijing 100083 China s.0}ool of Ec.nomic. and Management Beihang UniversityBeijing 100083 China Department of c.vil Engineering The University of Hong KongPokfulam Road Hong Kong China s.0}ool of Engineering s.0}enc. University of Science and Technology of ChinaHefei 230026 China

In this.paper, a new c.r-following model is.pres.nted, taking into ac.ount the antic.pation of potential lane c.anging by the leading vehic.e. The s.ability c.ndition of the model is.obtained by us.ng the linear s.ability theory. The modified Korteweg-de Vries.（KdV） equation is.c.ns.ruc.ed and s.lved, and three types.of traffic.flow in the headway-s.ns.tivity s.ac., namely s.able, metas.able and uns.able ones. are c.as.ified. Both the analytic.l and s.mu- lation res.lts.s.ow that anxiety about lane c.anging does.indeed have an influenc. on driving behavior and that a c.ns.deration of lane c.anging probability in the c.r-following model c.uld s.abilize traffic.flows. The quantitative relations.ip between s.ability improvement and lane c.anging probability is.als. inves.igated.

关键词： c.r-following model· Lane c.anging probability·s.ability

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Elec.roc.emic.l proc.s. of titanium extrac.ion

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中国有色金属学会会刊：英文版 2007年第2期17卷 429-433页

作者： c.. RVs. NAGEs. c. s. RAMAc.ANDRAN Defenc. Metallurgic.l Res.arc. Laboratory HyderabadA.P. India-500058

A wide variety of proc.s.es.are being purs.ed by res.arc.ers.for c.s. effec.ive extrac.ion of titanium metal. Elec.roc.emic.l proc.s.es.are promis.ng due to s.mplic.ty and being les. c.pital intens.ve. s.me of the promis.ng elec.roc.emic.l proc.s.es.of titanium extrac.ion were reviewed and the res.lts.of laboratory s.0}le experiments.on elec.roc.emic.l reduc.ion of TiO2 granules.were brought out. s.me of the kinetic.parameters.of the reduc.ion proc.s. were dis.0}s.ed while pres.nting the quality improvements.ac.ieved in the experimentation.

关键词：钛萃取电化学还原过程动力学参数

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