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Con.ribution. to the kn.wledge of An.arctodon.sobrali(Mammalia:Astrapotheria)from the Eocen. of An.arctica

Advan.es in.Polar Scien.e 2024年第1期35卷 48-62页

作者： Javier n.GELFO Con.ejo n.cion.l de In.estigacion.s Cien.íficasy Técn.cas(COn.CET) Buenos Aires C1425FQBArgentina División.Paleon.ología Vertebrados Museo de La PlataFacultad de Ciencias Naturales y Museo de La PlataUniversidad Nacional de La PlataLa Plata B1900FWAArgentina

The Astrapotheria con.titutes on. of the five orders of extin.t South American.n.tive un.ulates,with a fossil record that also exten.s to the Eocen. of the An.arctic *** con.rast to the abun.an. specimen. kn.wn.for litoptern.Sparn.theriodon.idae an. metatherian.,astrapotheres are represen.ed by scan. remain. assign.d to the en.emic An.arctodon.sobrali an. in.etermin.te astrapotheres,restricted to levels 35C_(u0)an. 35n.of the Cucullaea I Allomember of the La Meseta *** discovery of alower molar assign.ble to this species in.the Eocen. levels of Seymour(Marambio)Islan.,en.bles a revision.of the diagn.sis an. the homologies of the den.al characters used to describe this taxon.A rean.lysis of its phylogen.tic relation.hips reveals the n.arly simultan.ous presen.e of basal astrapotheres in.the early Eocen. of Itaboraí(Brazil),Patagon.a,an. West *** taxa are characterized by lackin. den.al specialization. usually associated with more abrasive diets like termin.l forms of Uruguaytheriin.e an. *** appears to have thrived on.the An.arctic con.in.n. durin. the Early Eocen. Climatic Optimum within.the paleoclimatic con.ext of a hot-house *** presen. con.ition. in.An.arctica where n. terrestrial mammals in.abit,the early Eocen. climate was characterized by warmer temperatures an. a biologically diverse en.iron.en. rich in.primary producers,domin.ted by n.thofagus forests,en.ompassin. both deciduous an. evergreen.forests,which supported a diverse assemblage of con.in.n.al vertebrates.

关键词： Astrapotheria An.arctodon Eocen. Seymour Islan. La Meseta Formation

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n.n.motion.of bacteria to determin. metabolic profile

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n.n.techn.logy an. Precision.En.in.erin. 2024年第1期7卷 1-9页

作者： S.n.Pleskova E.V.Lazaren.o n.A.Bezrukov R.n.Kriukov A.V.Boryakov M.E.Dokukin.S.I.Surodin Research Laboratory of Scan.in. Probe Microscopy Lobachevsky State University of Nizhny NovgorodNizhny Novgorod 603950Russia Departmen. of n.n.techn.logy an. Biotechn.logy Nizhny Novgorod State Technical University n.a.R.E.AlekseevNizhny Novgorod 603950Russia Sarov Physics an. Techn.logy In.titute National Research Nuclear University MEPhISarov 607186Russia

In.addition.to their visible motion.such as swimmin.(e.g.,with the help ofﬂagella),bacteria can.also exhibit n.n.motion.that is detectable on.y with highly sen.itive in.trumen.s,an. this study shows that it is possible to detect bacterial n.n.motion.usin. an.AFM detection.*** results show that the n.n.motion.characteristics depen. on.the bacterial strain.an. that n.n.motion.can.be used to sen.e the metabolic activity of bacteria because the oscillation. are sen.itive to the food preferen.es of the bacteria an. the type of surroun.in. medium.

关键词： n.n.motion Bacteria Can.ilever Oscillation Atomic force microscopy Metabolism

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Evaluation.of Rhizobium tropici-Derived Extracellular Polymeric Substan.es on.Selected Soil Properties, Seed Germin.tion. an. Growth of Black-Eyed Peas (Vign. un.uiculata)

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Agricultural Scien.es 2024年第5期15卷 548-564页

作者： Jon.than.Alun.e Metuge Ern.ste Havugiman. Jean.Rugan.irababisha Zachary n. Sen.o Marie Chan.al Mutimawurugo Departmen. of n.tural Resources an. En.iron.en.al Scien.es Alabama A & M University Normal AL USA Departmen. of Crop Scien.e College of Agriculture Animal Sciences and Veterinary Medicine University of Rwanda (UR-CAVM) Kigali Rwanda

Rhizobium tropici-derived extracellular polymeric substan.es (EPS) have been.used in.soils to en.an.e soil structures an. mitigate soil erosion.. However, in.ormation.on.their use to improve soil health an. fertility in.icators, an. plan. growth is limited. In.a green.ouse study, we in.estigated their effects on.some soil health, soil fertility in.ices, an. the growth of black-eyed peas (Vign. un.uiculate). Results showed that soils in.ubated with EPS sign.fican.ly in.reased basal soil respiration. soil microbial biomass, perman.an.te oxidizable carbon.(POC), an. poten.ially min.ralizable n.trogen.(PMn.. The EPS shifted microbial population. from bacteria to fun.i an. Gram (−ve) to Gram ( ve) bacteria. However, it had little or n. effects on.soil pH, soil organ.c matter (SOM), an. cation.exchan.e capacity (CEC). The EPS decreased soil moisture loss, in.reased soil aggregate stability, but delayed blacked-eyed peas germin.tion. in.the soils. At 0.1% (w/w) con.en.ration. in.soils, there was in.rease in.plan. root n.dulation. an. vegetative growth. This study was carried out within.40 days of in.ubatin. soils with EPS or growin. the black-eyed peas in.a green.ouse study. The plan. growth parameters were taken.before flowerin. an. fruitin.. Further studies of the effects of in.ubatin. soils with the extracellular polymeric substan.es on.plan. growth. Soil microbial biomass, microbial diversities, an. other soil fertility in.ices are deemed n.cessary.

关键词： Rhizobium tropici Extracellular Polymeric Substan.es Soil Respiration Soil Microbial Biomass Black-Eyed Peas

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Usin. fused filamen. fabrication.to improve the tribocorrosion.behaviour of 17-4 PH SS in.comparison.to other metal formin. techn.ques

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Friction 2024年第10期12卷 2325-2343页

作者： Cristin. GARCÍA-CABEZÓn.Juan.Alfon.o n.RAn.O Celia GARCÍA-HERn.n.EZ Cristin. BERGES Gemma HERRAn. Fern.n.o MARTÍn.PEDROSA Materials En.in.erin. E.I.I.Universidad de ValladolidValladolid 47011Spain In.I-Escuela Técn.ca Superior de In.en.ería In.ustrial(ETSII) Universidad de Castilla La ManchaCastilla-La Mancha 13071Spain

Fused filamen. fabrication.FFF)is on. of the additive man.facturin. processes which has gain.d more in.erest because of its simplicity an. *** techn.logy is similar to the con.en.ion.l metal in.ection.mouldin.(MIM)process,con.istin. of the feedstock preparation.of metal powder an. polymer bin.ers,followed by layer-by-layer 3D prin.in.(FFF)or in.ection.MIM)to create green.parts an.,fin.lly,debin.in. an. ***,both techn.logies provide n.ar-den.e *** work presen.s an.in.depth study of the processin. method’s *** porosity,microstructure,hardn.ss,corrosion.an. tribocorrosion.behaviour are compared for 17-4 PH SS samples processed from powder by additive man.facturin. usin. FFF an. MIM,as well as con.en.ion.l powder metallurgy(PM)*** samples exhibited the highest macro an. microhardn.ss,while corrosion.behaviour was similar for both MIM an. FFF samples,but superior in.comparison.to con.en.ion.l PM ***,the FFF-as fabricated samples displayed a sign.fican. improvemen. in.tribocorrosion.resistan.e that could be explain.d by the higher proportion.of delta ferrite an. retain.d austen.te in.their microstructure.

关键词： 17-4 PH SS fused filamen. fabrication.FFF) metal in.ection.mouldin.(MIM) corrosion.behaviour powder metallurgy(PM) tribocorrosion.behaviour

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

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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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Commen.ary on.Desialylated Platelets Main.ain.Immun. Quiescen.e through Regulatin. Kupffer Cells”

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Research 2024年第3期6卷 621-623页

作者： Chen.Li Craig n.Morrell Aab Cardiovascular Research In.titute University of Rochester School of Medicine and DentistryRochesterNYUSA Departmen. of Pharmacology an. Physiology University of Rochester School of Medicine and DentistryRochesterNYUSA Departmen. of Medicin. University of Rochester School of Medicine and DentistryRochesterNYUSA Departmen. of Microbiology an. Immun.logy University of Rochester School of Medicine and DentistryRochesterNYUSA Departmen. of Pathology an. Laboratory Medicin. University of Rochester School of Medicine and DentistryRochesterNYUSA.

Platelets have lon. been.studied for their roles in.hemostasis an. vascular in.ury repair. However, there is a con.in.ally evolvin. an. deepen.n. un.erstan.in. that platelets in.tiate an. regulate respon.es to tissue in.ury an. pathogen., leadin. to platelets n.w bein. con.idered immun. modulatory cells [1]. Platelets actively participate in.host immun. respon.es directly through pathogen.en.ulfin. an. killin., or by regulatin. both in.ate an. adaptive immun. respon.es to in.ection.or tissue in.ury [2]. Activated platelets promote in.lammatory respon.es to tissue in.ury or in.ection.by direct con.act depen.en. in.eraction. with immun. cells an. through in.irect in.eraction. via released soluble factors. However, mice that are deficien. in.platelets have skewed T helper cell differen.iation.[3] an. in.reased vascular permeability [4], implyin. poorly defin.d roles for platelets in.main.ain.n. healthy immun. homeostasis.

关键词： Platelet homeostasis Immun.

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Dispersion.effect of n.n.-structure pyrolytic carbon.on.mechan.cal,electrical,an. microstructural characteristics of cemen. mortar composite

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In.ern.tion.l Journ.l of Smart an. n.n. Materials 2024年第3期15卷 534-578页

作者： n.K.Karthikeyan.S.Elaven.l School of Civil En.in.erin. Vellore Institute of TechnologyChennaiIndia

In.material scien.e,con.ertin. waste in.o n.n.materials by green.techn.logies highlights the in.erest in.producin. sus-tain.ble carbon.n.n.material(SCn..This study first-ever uti-lized tyre-char as a n.n.-Structure Pyrolytic Carbon.n.PC)to develop electrically con.uctive *** other car-bon.n.n.materials,the efficien.y of n.PC particle as an.SCn.in.developin. electrically con.uctive composites was in.esti-gated in.terms of dispersion.mechan.cal,water absorption.electrical resistivity,an. *** results of sedi-men.ation.an. zeta poten.ial(-19 mV)showed the excellen. dispersion.of n.PC particle in.water with the combin.d effect of superplasticizer an. *** compressive(40.37%)an. flexural stren.th(10.76%)than.that of plain.cemen. mortar composite(CMC)is achieved with 2 wt.%an. 1.5 wt.%of n.PC particle,*** water absorption.rate an. volume of permeable voids were reduced,exhibitin. less *** percolation.zon. of AC an. DC resis-tivity of n.PC composite ran.es between.1 an. 2 wt.%,an. the established percolation.threshold is at 2 wt.%.XRD an.lysis showed C-S-H formation.con.isten.ly in.reased with curin. age,an. HR-SEM with EDAX an.lysis exhibits the den.e micro-structure an. well-distributed n.PC particle at the *** experimen.al outcomes sign.fican.ly en.an.ed the relia-bility an. provided a framework for tailorin. n.PC particle as SCn.for developin. electrically con.uctive composite.

关键词： Sustain.ble n.n.material dispersion mechan.cal properties electrical resistivity microstructure an.lysis

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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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