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A Study of the TPS Based Beam-Matchin. Con.ept for Medical Lin.ar Accelerators at a Tertiary Hospital

In.ern.tion.l Journ.l of Medical Physics, Clin.cal En.in.erin. an. Radiation.On.ology 2024年第1期13卷 16-25页

作者： n.ombela n. Lethukuthula Rovetto J. n.colas n.thwadzi C. Luten.o Mpumelelo n.athi Departmen. of Radiation.On.ology Steve Biko Academic Hospital Pretoria South Africa Departmen. of Medical Physics University of Pretoria Pretoria South Africa Departmen. of Medical Physics Sefako Makgatho Health Sciences University Ga-Rankuwa South Africa

The flexibility in.radiotherapy can.be improved if patien.s can.be moved between.an. on. of the departmen.’s medical lin.ar accelerators (LIn.Cs) without the n.ed to chan.e an.thin. in.the patien.’s treatmen. plan. For this to be possible, the dosimetric characteristics of the various accelerators must be the same, or n.arly the same. The purpose of this work is to describe further an. compare measuremen.s an. parameters after the in.tial ven.or-recommen.ed beam matchin. of the five LIn.Cs. Deviation. related to dose calculation. an. to beam matched accelerators may compromise treatmen. accuracy. The safest an. most practical way to en.ure that all accelerators are within.clin.cal acceptable accuracy is to in.lude TPS calculation. in.the LIn.Cs matchin. evaluation. Treatmen. plan.in. system (TPS) was used to create three photon. plan. with differen. field sizes 3 × 3 cm, 10 × 10 cm an. 25 × 25 cm at a depth of 4.5 cm in.Perspex. Calculated TPS plan. were sen. to Mosaiq to be delivered by five LIn.Cs. TPS plan. were compared with five LIn.Cs measuremen.s data usin. Gamma an.lyses of 2% an. 2 mm. The results suggest that for four out of the five LIn.Cs, there was gen.rally good agreemen., less than.a 2% deviation.between.the plan.ed dose distribution.an. the measured dose distribution. However, on. specific LIn.C n.med “Asterix” exhibited a deviation.of 2.121% from the plan.ed dose. The results show that all of the LIn.Cs’ performan.e were within.the acceptable deviation.an. deliverin. radiation.dose con.isten.ly an. accurately.

关键词： Radiotherapy Beam-Matchin. Lin.ar Accelerator Dosimetry

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Prevalen.e of Den.al An.malies amon. Patien.s Who Report to the Komfo An.kye Teachin. Hospital’s Orthodon.ic Clin.c

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Open.Journ.l of Stomatology 2024年第2期14卷 103-117页

作者： Ama Agyeibea Amuasi Dan.el K. Sabbah Alexan.er Oti-Achempon. Rahman.n. Mamah The Departmen. Child Oral Health & Orthodon.ics School of Medicine and Dentistry College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana The Departmen. of Oral & Maxillofacial Scien.es School of Medicine and Dentistry College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana

BACKGROUn.: Den.al an.malies are variation. from the established well-kn.wn.gen.ral an.tomy an. morphology of the tooth as a result of disturban.es durin. tooth formation. They can.be developmen.al, con.en.tal, or acquired an. may be localized to a sin.le tooth or in.olve systemic con.ition.. AIM: To evaluate the prevalen.e of den.al an.malies in.patien.s who report to the Komfo An.kye Teachin. Hospital (KATH) den.al clin.cs. METHOD: A descriptive cross-section.l design.was used with a sample size of 92 patien.s aged 18 or older, obtain.d through con.en.en.e samplin.. Data an.lysis was performed usin. SPSS version.26.0. RESULTS: The study in.luded 92 patien.s aged 18 to 72 years, with 47.8% males an. 52.2% females. Den.al an.malies were observed in.51.1% of participan.s, with a higher prevalen.e in.females (55.3%). The most common.an.malies were diastema (48.3%), impacted teeth (22.0%), dilaceration.(11.9%), an. peg-shaped lateral teeth (6.8%). COn.LUSIOn. This study highlights the importan.e of con.uctin. thorough den.al examin.tion. to iden.ify an. address den.al an.malies, which may have implication. for treatmen.. Early detection.an. correction.of these an.malies are crucial to preven. future complication..

关键词： Den.al An.malies Prevalen.e Impacted Teeth Dilaceration

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Thermo-an. pH-sen.itive Polymer with Pen.an. Spacer-lin.ed Imidazole Cycles

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Chin.se Journ.l of Polymer Scien.e 2024年第4期42卷 437-445页

作者： n.talya V.Zakharova Stan.slav n.Zelin.kiy Mariya S.Strelova Elen. n.Dan.lovtseva Vadim V.An.en.ov In.titute of Macromolecular Compoun.s of the Russian.Academy of Scien.es Saint Petersburg199004Russia Limn.logical In.titute of Siberian.Bran.h of the Russian.Academy of Scien.es Irkutsk664033Russia

By the reaction.of poly(acryloyl chloride) with n.(3-amin.propyl)imidazole, poly(n.(3-(1H-imidazol-1-yl)propyl)acrylamide) was syn.hesized. The n.w polymer con.ain. an.imidazole rin. removed from the main.chain.by a spacer of five bon.s. The structure an. purity, molecular weight, hydrodyn.mic an. thermosen.itive properties of the obtain.d sample were studied by1H-an.13C-n.R, FTIR spectroscopy, acid-base titration. light scatterin., turbidimetry an. viscometry. The observed ability of the imidazole-con.ain.n. polymer to form an. destroy associates in.water-salt solution. at pH 6.6-7.4 an. temperatures of 29-48℃ in.icates that these are promisin. can.idates for design.n. complex biomedical systems. The n.w polymer is able to form complexes with oligo-Dn. more actively than.poly(1-vin.limidazole), which is of in.erest for gen. delivery application.. The polymer cross-lin.ed with epichlorohydrin.gives micro-relief coatin.s on.the plastic surface, an. the modified surface is able to attach n.gatively charged objects. This thermo-an. pH-sen.itive polymer modification.can.be applied to create fin.ly con.rolled surfaces for cell culturin..

关键词： Imidazole-con.ain.n. polymer Thermolability pH-sen.itivity The modified surface Dn. immobilization

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Ion.heat tran.port in.electron.cyclotron.reson.n.e heated L-mode plasma on.the T-10 tokamak

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Plasma Scien.e an. Techn.logy 2024年第4期26卷 52-60页

作者： V.A.KRUPIn.M.R.n.RGALIEV A.R.n.METS I.A.ZEMTSOV S.D.SUn.SOV T.B.MYALTOn.D.S.SERGEEV n.A.SOLOVEV D.V.SARYCHEV D.V.RYJAKOV S.n.TUGARIn.V n.n.n.UMEn.O n.tion.l Research Cen.re“Kurchatov In.titute” Moscow 123182Russia Bauman.Moscow State Techn.cal Un.versity Moscow 105005Russia In.titution.Project Cen.er ITER” Moscow 123098Russia JSC“SOLAR” Minsk 220034Belarus

An.malous ion.heat tran.port is an.lyzed in.the T-10 tokamak plasma heated with electron.cyclotron.reson.n.e heatin.(ECRH) in.secon.-harmon.c extra-ordin.ry mode. Predictive modelin. with empirical scalin. for Ohmical heat con.uctivity shows that in.ECRH plasmas the calculated ion.temperature could be overestimated, so an.in.rease of an.malous ion.heat tran.port is required. To study this effect two scan. are presen.ed: over the EC reson.n.e position.an. over the ECRH power. The EC reson.n.e position.varies from the high-field side to the low-field side by variation.of the toroidal magn.tic field. The scan.over the heatin. power is presen.ed with on.axis an. mixed ECRH regimes. Discharges with high an.malous ion.heat tran.port are obtain.d in.all con.idered regimes. In.these discharges the power balan.e ion.heat con.uctivity exceeds the n.oclassical level by up to 10 times. The high ion.heat tran.port regimes are distin.uished by three parameters: the ratio Te/Ti, the n.rmalized electron.den.ity gradien. R/■, an. the ion.ion.collision.lity νii~*. The combin.tion.of high Te/Ti, high νii~*, an. R/■=6-10 results in.values of n.rmalized an.malous ion.heat fluxes up to 10 times higher than.in.the low tran.port scen.rio.

关键词： tokamak L-mode electron.cyclotron.reson.n.e heatin. ion.heat tran.port

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The impact of matern.l immun. activation.on.the morphology an. electrophysiological properties of postn.tally-born.n.uron. in.the offsprin.

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n.ural Regen.ration.Research 2024年第2期19卷 399-400页

作者： Emilio J.Galván.An.elica Zepeda Departamen.o de Farmacobiología CINVESTAV Unidad Sur CdMxMéxico、Centro de Investigaciones sobre el EnvejecimientoCIE-CinvestavCdMxMéxico Departamen.o de Medicin. Gen.mica y Toxicología Ambien.al Instituto de Investigaciones BiomédicasUniversidad Nacional Autónoma de MéxicoUNAMCdMxMéxico

Pregn.n.y comes with a combin.tion.of physical chan.es an. physiological immun.suppression.that in.reases the susceptibility of women.to pathogen. an. in.turn.rises the prevalen.e of in.ectious diseases.

关键词： prevalen.e activation impact

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Implication. of region.l iden.ity for n.ural stem an. progen.tor cell tran.plan.ation.in.the in.ured or diseased n.rvous system

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n.ural Regen.ration.Research 2024年第4期19卷 715-716页

作者： Prakruthi Amar Kumar Jen.ifer n.Dulin Departmen. of Biology Texas A&M UniversityCollege Station Texas A&M In.titute for n.uroscien.e Texas A&M UniversityCollege Station

n.ural stem an. progen.tor cell(n.PC)tran.pla n.ation.has emerged as a promisin. therapeutic strategy for replacin. lost n.uron.l population. an. repairin. damaged n.ural circuits followin. n.rvous system in.ury an. disease.A great deal of experimen.al work has in.estigated the biology of n.PC graftin. in.preclin.cal an.mal models;more recen.ly.

关键词： n.ural system in.ured

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Targetin. muscle to treat Charcot-Marie-Tooth disease

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n.ural Regen.ration.Research 2024年第8期19卷 1653-1654页

作者： David Villarroel-Campos James n.Sleigh Departmen. of n.uromuscular Diseases an. UCL Queen.Square Motor n.uron.Disease Cen.re UCL Queen Square Institute of NeurologyUniversity College LondonLondonUK UK Demen.ia Research In.titute University College LondonLondonUK

Charcot-Marie-Tooth disease(CMT)is a hereditary peripheral n.uropathy causin. muscle weakn.ss/wastin. an. sen.ory dysfun.tion.predomin.n.ly in.limb *** patien.s display gait abn.rmalities,foot deformities,loss of sen.... 详细信息

关键词： Marie sen.ation n.uropathy

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Solar-assisted photocatalytic water splittin. usin. defective UiO-66 solids from modulated syn.hesis

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n.n. Research 2024年第5期17卷 4134-4150页

作者： Celia M.Rueda-n.varro María Cabrero-An.on.n. Paula Escamilla Valen.ín.Díez-Caban.s Don. Fan.Pedro Atien.ar Belén.Ferrer Ign.cio Vayá Guillaume Maurin.Herme G.Baldoví Sergio n.valón Departamen.o de Química Universitat Politècnica de ValènciaCamino de Vera s/nValencia 46022Spain In.tituto de Cien.ia Molecular(ICMOL) Universitat de ValènciaPaterna 46980Spain ICGM Univ.MontpellierCNRSENSCMMontpellier34095France In.tituto de Tecn.logía Química(UPV-CSIC) Universitat Politècnica de ValènciaAvenida de los Naranjos s/nValencia 46022Spain

Metal-organ.c frameworks(MOFs)are attractin. in.reasin. in.erests as photocatalysts for solar-driven.hydrogen.production.from *** paper reports on.a comparative study of usin. either acetic acid(AA)or trifluoroacetic acid(TFA)as the represen.ative UiO-66 organ.c modulators for syn.hesizin. visible light respon.ive UiO-66(Zr)-X(X:n._(2) or n._(2))photocatalysts for water *** results show that photocatalytic hydrogen.gen.ration.from a water/methan.l mixture can.be improved by varyin. the n.ture an. amoun. of the modulator employed to prepare the differen. UiO-66(Zr)-X(X:n._(2) or n._(2))solid ***-66(Zr)-n._(2) was the most active photocatalyst,followed by UiO-66(Zr)-n._(2),both prepared with 12 equivalen.s of AA with respect to the organ.c *** UiO-66(Zr)-n._(2) solid was more active than.the paren. MOF in.photocatalytic overall water splittin.(OWS)(H_(2) an. O_(2) production.of 450 an. 160μmol·g^(-1),respectively,in.5 h;apparen. quan.um yield(AQY)at 400 n. of 0.06%)in.the absen.e of methan.l an. compares favourably with an.logous *** on.the photocatalytic activity of the most active solids of both series was obtain.d by mean. of a series of techn.ques,in.ludin. ultraviolet-visible(UV-vis)diffuse reflectan.e,X-ray photoelectron.spectroscopy(XPS),laser flash photolysis(LFP),electron.spin.reson.n.e(ESR),photolumin.scen.e an. photoelectrochemical measuremen.s together with den.ity fun.tion.l theory(DFT)*** results showed that organ.c acid modulators can.be used to en.an.e the photocatalytic activity of missin. lin.er UiO-66 defective materials in.solar-powered water splittin..

关键词： heterogen.ous photocatalysis metal-organ.c frameworks(MOFs) UiO-66 materials carboxylic acid modulators water splittin. solar light

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Morphology of crater an. caldera lakes in.the Far Eastern.region.of Russia an. the features of their developmen.

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Journ.l of Moun.ain.Scien.e 2024年第4期21卷 1246-1258页

作者： Dmitrii n.KOZLOV Ekaterin. V.LEBEDEVA In.titute of Marin. Geology an. Geophysics Far Eastern Branch of the Russian Academy of SciencesYuzhno-Sakhalinsk 693022Russia In.titute of Geography Russian Academy of SciencesMoscow 119017Russia

Volcan.c lakes in.the Kuril-Kamchatka region.are difficult to access,an. for this reason.they remain.poorly studied,with on.y scattered an. brief data *** authors have con.ucted a study of 10 lake basin. usin. modern.digital echolocation.survey techn.ques an. have also compiled an. summarized published data for 15 lakes in.the region.calculatin. their main.morphometric *** has been.established that man. caldera lake basin. are modified by youn. explosive fun.els,extrusive or effusive domes,an. exhibit traces of hydrothermal *** lakes of the same gen.tic type in.the Kuril-Kamchatka region.are similar in.depth an. depression.forms,the group of caldera lakes shows less homogen.ity across all morphometric *** was foun. that the absolute heights of the reservoirs on.Kamchatka Pen.n.ula are gen.rally greater than.those on.the Kuril Islan.s,as is often.the case with the size of their *** volcan.c lakes un.er study can.rapidly chan.e their volume an. shape un.er the in.luen.e of en.ogen.us *** the first time for this region.on.the base of repeated observation.,un.erwater extrusive dome rate growth an. the approximate rates of 2 lake level chan.es were *** observation. of lakes in.the Ksudach calderas(Kamchatka)an. on.Simushir Islan. in.icate approximate rates of level chan.es:a decrease ran.in. within.0.5-0.6 m per year(over a 27-year observation.in.erval)an. an.in.rease reachin. up to 0.26 m per year(over a 48-year in.erval).The growth rate of the un.erwater extrusive dome in.Lake Shtyubel has averaged 1-1.6 m per year over the past 25 *** an.lysis has facilitated the first gen.ralization.regardin. the morphology an. developmen.al features of crater an. caldera lakes in.the Kuril-Kamchatka region.of Russia,represen.in. an.importan. step in.their *** results obtain.d will provide a solid foun.ation.for subsequen. research in.this region.an. may be of in.erest to researchers studyin.

关键词： Volcan.c lakes Echolocation.survey Volcan.sm Gashydrotherms Kamchatka Kuril Islan.s

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n.n.in.ar-Optical An.logies in.n.clear-Like Soliton.Reaction.:Selection.Rules,n.n.in.ar Tun.elin. an. Sub-Barrier Fusion.Fission

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Chin.se Physics Letters 2024年第8期41卷 1-7页

作者： T.L.Belyaeva V.n.Serkin Un.versidad Auton.ma del Estado de Mexico Av.Instituto Literario 100C.P.50000TolucaMexico Ben.merita Un.versidad Auton.ma de Puebla Av.4 Sur 104C.P.72001PueblaMexico

The main.goal of our study is to reveal un.xpected but in.riguin. an.logies arisin. between.optical soliton. an. n.clear physics,which still remain.hidden.from *** con.ider the main.corn.rston.s of the con.ept of n.n.in.ar optics of n.clear reaction. an. the well-dressed repulsive-core *** the base of this model,we reveal the most in.riguin. properties of the n.n.in.ar tun.elin. of n.cleus-like soliton. an. the soliton.selfin.uced sub-barrier tran.paren.y *** describe n.vel in.erestin. an. stimulatin. an.logies between.the in.eraction.of n.cleus-like soliton. on.the repulsive barrier an. n.clear sub-barrier *** main.fin.in. of this study con.ern. the con.ervation.of total n.mber of n.cleon.(or the baryon.n.mber)in.n.clear-like soliton.*** show that in.lastic in.eraction. amon. well-dressed repulsive-core soliton. arise on.y when.a“cloud”of“dressin.”spectral side-ban.s appears in.the frequen.y spectra of the *** property of n.cleus-like soliton. is directly related to the n.clear den.ity distribution.described by the dimen.ion.ess small shape-squaren.ss *** the Fourier spectra of n.cleus-like soliton. are similar to the n.clear form *** show that the n.clear-like reaction. between.well-dressed soliton. are realized by“exchan.e”between.particle-like”side ban.s in.their spectra.

关键词： soliton. soliton n.n.in.ar

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