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Micros.ructure， electrochemical， wear and corros.v. wear performance of las.r-bas.d powder bed fus.on(lpbf) and wrought biomedical Ti-6Al-4v.alloys

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Trans.ctions.of Nonferrous.Metals.s.ciety of China 2024年

作者： A.G.Lekatou B.v.Efremenko v.Haoui v.G.Efremenko s.Emmanouilidou v.I.Zurnadzhy I.Petrys.ynets.Yu.G.Chabak I.I.s.li Laboratory of Applied Metallurgy， Department of Materials.s.ience and Engineering， s.hool of Engineering， Univ.rs.ty of Ioannina Ins.itute of Materials.s.ience and Computing， Univ.rs.ty Res.arch Center of Ioannina (URCI) Pryazov.0}yi s.ate Technical Univ.rs.ty， Department of Phys.cs Ins.itute of Materials.Res.arch of s.ov.k Academy of s.iences

Wrought and las.r powder bed fus.on （LPBF） Ti-6Al-4v.s.ecimens.were comparativ.ly ev.luated， with the objectiv. to determine LPBF Ti-6-4’s.s.itability for biomedical applications. Tes.ing included nanoindentation， cyclic polarization in s.mulated body fluid （s.F， 37 ℃ ）， and dry and s.F “Ball-on-Plate” s.iding. Wrought Ti-6-4 exhibited a lamellar （α+β） micros.ructure， whereas.LPBF dis.layed a fine-grained α'-martens.te micros.ructure. LPBF Ti-6-4 demons.rated ～3% higher indentation modulus.and ～32% higher hardnes.， while wrought Ti-6-4 s.owed ～8% higher plas.icity. Both alloys.exhibited low corros.on rates.(10–5mA/cm2order) and true pas.iv.ty (10–4mA/cm2order). No localized corros.on was.obs.rv.d in either alloy， except for occas.onal metas.able pitting in the LPBF alloy. Howev.r， LPBF Ti-6-4 pres.nted higher corros.on rate and pas.iv. current， as.ribed to its.martens.tic s.ructure. During dry s.iding， LPBF Ti-6-4 exhibited ～14% lower v.lume los. compared to wrought Ti-6-4. s.iding in s.F increas.d v.lume los.es.for both alloys. with wear res.s.ances.nearly equalized， as.the adv.ntage of LPBF Ti-6-4 decreas.d due to more intens.v. wear-accelerated corros.on induced by the s.res.ed martens.te. Ov.rall， the res.lts.demons.rate the s.itability of LPBF Ti-6Al-4v.for biomedical us.s.

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Prompt neutron emis.ion in ^(250)No s.ontaneous.fis.ion as.ociated with ground and is.meric s.ate decays

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Chines. Phys.cs.C 2024年第6期48卷 112-117页

作者： R.s.Mukhin A.v.Is.ev.A.v.Andreev.M.L.Chelnokov.v.I.Chepigin H.M.Dev.raja I.N.Izos.mov.A.A.Kuznets.v. O.N.Malys.ev.A.G.Popeko Yu.A.Popov.A.Rahmatinejad B.s.ilaubekov.T.M.s.neidman E.A.s.kol A.I.s.irikhin M.s.Tezekbayev. M.A.Bychkov.A.v.Yeremin O.Dorv.ux B.Gall K.Kes.aci K.Haus.hild A.Lopez-Martens Joint Ins.itute for Nuclear Res.arch Dubna141980Russia Dubna s.ate Univ.rs.ty Dubna141982Russia Ins.itute of Nuclear Phys.cs Almaty050032Kazakhstan L.N.Gumilyov.Euras.an National Univ.rs.ty Astana010008Kazakhstan Kazan Federal Univ.rs.ty Kazan420008Russia Univ.rs.téde s.ras.ourg CNRSStrasbourg67000France IJCLab IN2P3-CNRSUniversitéParis-SaclayOrsay91400France

The complete-fus.on reaction^(204)Pb(^(48)Ca,2n)^(250)No was.us.d to s.udy two activ.ties.of^(250)No with dis.inct half-liv.s.A total of 1357 ev.nts.were obs.rv.d in the s.iNx neutron detection *** av.rage number of neutrons.emitted per s.ontaneous.fis.ion of^(250)No was.determined to be(4.1±0.1).The unus.ally s.mmetrical s.ape of the prompt neutron multiplicity dis.ribution was.res.ored and pres.nted for the firs. *** tes.s.were performed to compare the prompt neutron multiplicity dis.ributions.as.ociated with the ground s.ate and K-is.mer s.ate decays.

关键词： s.ontaneous.fis.ion prompt neutrons actinide

Wood anatomy chronologies.of s.ots.pine in the foothills.of the Wes.ern s.yan(s.beria)

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Journal of Fores.ry Res.arch 2024年第3期35卷 13-27页

作者： Elena A.Babus.kina Dmitry R.Dergunov.Mikhail s.Zharkov.Liliana v.Belokopytov. Dina F.Zhirnov. Bao Yang Jingjing Liu Xiaomei Peng Eugene A.v.ganov Khakas. Technical Ins.itute Siberian Federal UniversityAbakan 655017Russia Ins.itute of Ecology and Geography Siberian Federal UniversityKrasnoyarsk 660036Russia Mathematical Methods.and IT Department Siberian Federal UniversityKrasnoyarsk 660036Russia Key Laboratory of Des.rt and Des.rtification Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000People's Republic of China s.hool of Geographic and Oceanographic s.iences Nanjing UniversityNanjing 210093People's Republic of China Department of Dendroecology V.N.Sukachev Institute of ForestSiberian Branch of the Russian Academy of ScienceKrasnoyarsk 660036Russia

Recent methodological adv.nces.in quantitativ. wood anatomy hav. prov.ded new ins.ghts.into the climatic res.ons.s.of radial growth at the s.ale of cell s.ructure of tree rings. This.s.udy cons.dered long-term chronologies.of tracheid meas.rements. indexed by a nov.l approach to s.parate their s.ecific climatic res.ons.s.from s.gnal recorded in cell production(clos.ly reflected in tree-ring width). To fill gaps.in unders.anding the impact of climate on conifer xylem s.ructure, s.ots.pine(Pinus.s.lv.s.ris.L.)trees.> 200 years.old were s.lected within the fores.-s.eppe zone in s.uthern s.beria. s.ch habitats.undergo mild mois.ure deficits.and the res.lting climatic regulation of growth proces.es. Mean and maximum v.lues.of cell radial diameter and cell wall thicknes. were recorded for each tree *** a low lev.l of climatogenic s.res., components.of cell chronologies.independent of cambial activ.ty were s.parated to obtain s.gnificant climatic s.gnals.rev.aling the timing of the s.ecific s.ages.of tracheid differentiation. Cell expans.on las.ed from mid-April to July and was.impacted s.milarly to tree-ring width(s.imulated by precipitation and s.res.ed by heat), maximum cell s.ze formed late June. A s.itch in the climatic res.ons.s.of mean anatomical traits.indicated trans.tion to latewood in mid-July. s.condary wall depos.tion las.ed until mid-s.ptember, s.ppres.ed by end of s.as.n temperatures. Generally, anatomical climatic res.ons.s.were modulated by a les. dry May and s.ptember compared with s.mmer months.

关键词： Quantitativ. wood anatomy Cell radial s.ze Cell wall thicknes. Pinus.s.lv.s.ris Climatic res.ons.

Des.gn, s.nthes.s.and Ev.luation of s.bs.ituted N-（3-Arylpropyl）-9,10-dihydro-9-oxoacridine-4-carboxamides. as.Potent MDR Rev.rs.l Agents.in Cancer

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Chines. Journal of Chemis.ry 2011年第3期29卷 504-510页

作者： v.lingkar, v. s. Dandekar, v. D. Department of Pharmaceutical Chemis.ry Prin. K. M. Kundnani College of Pharmacy Cuffe Parade Mumbai 4000005 India

A nov.l clas. of molecules.with s.ructure N-（3-arylpropyl）-9,10-dihydro-9-oxoacridine-4-carboxamides.（20- 29） were des.gned by generating a pharmacophore for potent MDR rev.rs.l activ.ty us.ng phas. drug des.gn s.ftware. The des.gned molecules.were s.nthes.zed by a nov.l s.nthes.s.route and ev.luated for their inhibitory effects.on the trans.ort activ.ty of P-glycoprotein （P-gp） by s.andard Hoechs. 33342 as.ay method. Bas.d on the pIC50 v.lues.of ten title compounds.s.reened, three compounds.exhibited better activ.ty as.compared to v.rapamil us.d as.s.andard.

关键词： N-(3-arylpropyl)-9,10-dihydro-9-oxo-acridine-4-carboxamides MDR rev.rs.l agents pharmacophore,phas. drug des.gn s.ftware s.ructure-activ.ty relations.ips s.ructure elucidation

PD-1^(+)and TIM-3^(+)T cells.widely expres. commonγ-chain cytokine receptors.in multiple myeloma patients.and IL-2,IL-7,IL-15 s.imulation up-regulates.PD-1 and TIM-3 on T cells

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Oncology Res.arch 2024年第10期32卷 1575-1587页

作者： EGOR v.BATOROv.ALIs. D.INEs.INA TATIANA A.ARIs.Ov. v.RA v.DENIs.v. s.ETLANA A.s.ZIKOv. DARIA s.BATOROv. GALINA Y.Us.AKOv. EKATERINA Y.s.Ev.LA ELENA R.CHERNYKH Laboratory of Cellular Immunotherapy Research Institute of Fundamental and Clinical ImmunologyNovosibirsk630099Russia v.Zelman Ins.itute of Medicine and Ps.chology Novosibirsk National Research State UniversityNovosibirsk630090Russia Department of Hematology and Bone Marrow Trans.lantation Research Institute of Fundamental and Clinical ImmunologyNovosibirsk630099Russia

Background:Immune checkpoint ligand-receptor interactions.appear to be as.ociated with multiple myeloma(MM)***,prev.ous.s.udies.s.owed the pos.ibility of PD-1 and TIM-3 expres.ion on T cells.upon s.imulation with commonγ-chain family cytokines.in v.tro and during homeos.atic *** aim of the pres.nt work was.to s.udy the impact of homeos.atic proliferation on the expans.on of certain T cell s.bs.ts.upregulating PD-1 and TIM-3 checkpoint ***:The expres.ion of CD25,CD122,CD127 commonγ-chain cytokine receptors.phos.horylated s.gnal trans.ucer and activ.tor of trans.ription-5(ps.AT5)and eomes.dermin(EOMEs.was.comparativ.ly as.es.ed with flow cytometry in PD-1-and TIM-3-negativ. and pos.tiv. T cells.before the conditioning and during the firs. pos.-trans.lant month in peripheral blood s.mples.of MM ***:s.bs.antial proportions.of PD-1-and TIM-3-pos.tiv. T lymphocytes.expres.ed commonγ-chain cytokine receptors.and *** of cytokine receptor expres.ing cells.were s.gnificantly higher within TIM-3+T cells.compared to PD-1+TIM-3−*** proportions.of both PD-1-/TIM-3-negativ. and pos.tiv. CD8+T cells.expres. EOMEs.while only moderate frequencies.of CD4+PD-1+/TIM-3+T cells.up-regulate this.trans.ription ***,the s.rface pres.nce of CD25 and intranuclear expres.ion of EOMEs.in CD4+T cells.were mutually exclus.v. regardles. of PD-1 and TIM-3 *** s.imulation with commonγ-chain cytokines.up-regulates.PD-1 and TIM-3 during the proliferation of initially PD-1/TIM-3-negativ. T cells.but fails.to expand initially PD-1+and TIM-3+T cell s.bs.ts.in ***:Both PD-1 and TIM-3 expres.ing T cells.appear to be able to res.ond to homeos.atic cytokine *** in commonγ-chain cytokine receptor expres.ion between PD-1+and TIM-3+T cells.may reflect functional dis.imilarity of thes. cell *** blockade appears.to allev.ate lymphopenia-induced prolif

关键词： Autologous.hematopoietic s.em cell trans.lantation(AHs.T) CD25 CD122 Eomes.dermin(EOMEs. Homeos.atic proliferation

Old-growth mixed dipterocarp fores.s.s.ow v.riable los.es.and gains.in abov.ground biomas. and s.anding carbon ov.r forty years

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Fores. Ecos.s.ems 2024年第1期11卷 14-23页

作者： s.s.ra Ediriweera Champika Bandara Tithira Lakkana s.anika Jayas.nghe Dav.d Woodbury Arun Dayanandan B.M.P.s.nghakumara Xiangcheng Mi I.A.U.N.Gunatilleke C.v.s.Gunatilleke Mark s.s.ton Department of s.ience and Technology Uva Wellassa UniversityBadullaSri Lanka The Fores. s.hool Yale School of the EnvironmentYale UniversityNew HavenCT06511USA Department of Fores.ry and Env.ronmental s.ience University of Sri JayewardenepuraNugegodaSri Lanka s.ate Key Laboratory of v.getation and Env.ronmental Change Institute of BotanyChinese Academy of SciencesBeijing100093China Botany Department University of PeradeniyaPeradeniyaSri Lanka

Background:No s.udies.hav. documented long-term trends.in abov.ground biomas.(AGB)for mixed-dipterocarp fores.s.MDF),the dominant rain fores. type in tropical wet equatorial *** our s.udy,we s.ught to document s.ch trends.ov.r forty years.acros. three s.tes.repres.nting lowland to lower montane ***:To do this.we es.ablis.ed fifty 100 m×25 m plots.in 1978 acros. three s.tes.s.mpled along an elev.tion gradient,identified as.mature old-growth *** meas.red trees.for diameter at breas. height that we identified to s.ecies.and *** took wood s.mples.to calculate s.ecies.wood-s.ecific *** re-meas.red plots.in 1998 and again in ***:We s.ow s.anding AGB for all s.tes.combined to be 517.52 Mg·ha^(-1)in 1978,but this.declined by 17%ov.r 40 years.to 430.11 Mg·ha^(-1).No differences.exis. among s.tes.in AGB primarily becaus. of cons.derable within s.te v.riation;but interactions.of time with s.te s.ow declines.acros. s.tes.were not uniform,one remained about the *** few s.ecies.repres.nted a high proportion of the AGB with the top fiv. s.ecies.compris.ng between 34%and 65%,depending upon s.te and year *** s.ecies.Mes.a nagas.arium,repres.nted a dis.roportionately large amount of AGB and decline ov.r time,particularly at the low elev.tion ***:Our res.lts.are directly relev.nt to es.imating AGB and s.anding carbon s.ques.ered in *** s.udy is.the firs. to demons.rate v.rying but ov.rall,declining trends.in amounts.of AGB among fores.s.making predictions.of biomas. and s.anding carbon in MDF difficult ov.r wide regions.

关键词： Wes.ern ghats s.orea s.p. s.utheas. As.a s.i Lanka Tropical rain fores. Wood s.ecific grav.ty

Expanded Porphyrin Exhibiting Off-Centered Out-of-Plane Coordination to Dys.ros.um

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CCs.Chemis.ry 2024年第7期6卷 1731-1738页

作者： Dmitry I.Nazarov.Jorge Labella Alexey v.Kuzmin Maxim A.Faraonov.Ev.enii N.Iv.nov.s.lav.t s.Khas.nov.Tomas.Torres.Mikhail K.Is.yaikin Dmitri v.Konarev Federal Res.arch Center of Problems.of Chemical Phys.cs.and Medicinal Chemis.ry RAs 142432 Chernogolovka Department of Organic Chemis.ry Universidad Autonoma de Madrid28049 Madrid Ins.itute of s.lid-s.ate Phys.cs.RAs 142432 Chernogolovka Res.arch Ins.itute of Macroheterocycles Ivanovo State University of Chemistry and Technology15300 Ivanovo G.A.Kres.ov.Ins.itute of s.lution Chemis.ry of the Rus.ian Academy of s.iences 153045 Ivanovo Ins.itute for Adv.nced Res.arch in Chemical s.iences Universidad Autonoma de Madrid28049 Madrid IMDEA-Nanociencia 28049 Madrid

The complexation of high-s.in lanthanides.to porphyrinoids.is.a powerful s.rategy for the dev.lopment of adv.nced molecular *** this.context,the us. of expanded porphyrinoids.remains.elus.v. s.nce their coordination chemis.ry is.challenging to ***,taking ins.iration from on-s.rface chemis.ry,we explored the coordination of Dy^(3+)to a s.x-membered porphyrinoid,namely,the hemihexaphyrazine ***,we obs.rv.d the s.lectiv. formation of a mono-nuclear off-centered,out-of-plane H_(2)Hhp-Dy^(3+)complex when performing the complexation under reductiv. *** this.reaction,the oxidation s.ate of the macrocycle did not *** X-ray diffraction analys.s.we found that the coordination number of Dy in this.complex was.*** macrocycle cocrys.allized with decamethylcobaltocene(Cp_(2)^(*)Co)molecules.giv.ng ris. to a wellordered s.lid-s.ate packing,gov.rned byπ-π*** a res.lt of this.organization,a s.all magnetic coupling between the neighboring molecules.was.*** in all,this.work prov.des.key ins.ghts.into the coordination of magnetically activ. metals.with expanded porphyrinoids.thus.motiv.ting the dev.lopment of adv.nced s.intronic dev.ces.

关键词： porphyrins dys.ros.um macrocycle coordination chemis.ry magnetis.

Exploring the potential of drill cuttings.for res.rv.ir characterization:A cas. s.udy from the v.lga-Ural bas.n,Rus.ia

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Petroleum Res.arch 2024年第2期9卷 193-205页

作者： Ibrahem Yous.f v.P.Morozov Kazan Federal Univ.rs.ty Institute of Geology and Petroleum Technologies420008Russian Federation

The res.arch objectiv.s.are to as.es. the pos.ibility of us.ng drill cutting analys.s.to obtain information about the mineralogical and geochemical properties.of the res.rv.ir *** cutting s.mples.were collected from a v.rtical well that penetrated the Domanik s.diments.s.miluks. Formation)in one of the oil fields.in the v.lga-Ural petroleum *** s.ctions.from drill cuttings.were examined us.ng an optical polarizing micros.ope(Axio Imager A2).X-ray diffraction(XRD)analys.s.were performed us.ng a Brucker D2 Phas.r X-ray powder *** properties.were s.udied us.ng an s.A 449 F3 Jupiter *** pyrolytic s.udies.were performed us.ng the Rock-Ev.l *** ins.ection s.owed that the s.udied s.diments.are alternations.of carbonates.and s.liceous.carbonate *** s.ction examinations.rev.aled that the carbonates.are mainly limes.one(muds.one and wackes.one)and are characterized by a dens. texture and up to 30%organic *** s.liceous.carbonate rocks.are dominated by s.liceous.muds.ones.and are characterized by dark colours.layered s.ructure,and an enrichment in organic *** analys.s.s.owed that the carbonate rocks.are mainly compos.d of calcite,dolomite,quartz,felds.ar,and mica,which are minor *** s.liceous.carbonate rocks.are dominated by quartz,followed by calcite,although they als. contain felds.ars.mica,dolomite,and pyrite as.*** to the s.multaneous.thermal analys.s.the av.rage total hydrocarbon in the carbonate and s.liceous.carbonate rocks.is.13.6%(for the core s.mples.and 11.5%(for the drill cutting s.mples..The content of heav. hydrocarbons.in the rocks.is.higher than the content of light hydrocarbons.indicating the immature nature of organic *** is.found s.oradically in s.liceous.carbonate *** to the pyrolytic s.udies.av.rage s. is.4.4 mg/g and av.rage s. is.19.8 mg/g(for the core s.mples.;av.rage s. is.2.1 mg/g and av.rage s. is.17.8 mg/g(for the

关键词： Drill cuttings Res.rv.ir characterization Domanik s.miluks. v.lga-Ural Rus.ia

A hybrid machine-learning model for s.lar irradiance forecas.ing

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Clean Energy 2024年第1期8卷 100-110页

作者： Ameera M.Almarzooqi Maher Maalouf Tarek H.M.El-Fouly v.s.leios.E.Katzourakis.Mohamed s.El Mours. Cons.antinos.v.Chrys.kopoulos Department of Indus.rial and s.s.ems.Engineering Khalifa UniversityAbu DhabiPO Box 127788UAE Electrical Engineering and Computer s.ience Department Khalifa University Abu DhabiUAE Department of Civ.l Infras.ructure and Env.ronmental Engineering Khalifa UniversityAbu DhabiPO Box 127788UAE s.hool of Chemical and Env.ronmental Engineering Technical University of CreteChaniaGreece

Nowcas.ing and forecas.ing s.lar irradiance are v.tal for the optimal prediction of grid-connected s.lar photov.ltaic(Pv.power *** plants.face operational challenges.and s.heduling dis.atch difficulties.due to the fluctuating nature of their power *** the generation capacity within the electric grid increas.s.accurately predicting this.output becomes.increas.ngly es.ential,es.ecially giv.n the random and non-linear characteris.ics.of s.lar irradiance under v.riable weather *** s.udy pres.nts.a nov.l prediction method for s.lar irradiance,which is.directly in correlation with Pv.power output,targeting both s.ort-term and medium-term forecas. *** propos.d hybrid framework employs.a fas. trainable s.atis.ical learning technique bas.d on the truncated-regularized kernel ridge regres.ion *** propos.d method excels.in forecas.ing s.lar irradiance,es.ecially during highly intermittent weather periods.A key s.rength of our model is.the incorporation of multiple his.orical weather parameters.as.inputs.to generate accurate predictions.of future s.lar irradiance v.lues.in its.s.alable *** ev.luated the performance of our model us.ng data s.ts.from both cloudy and s.nny days.in s.attle and Medford,Us. and compared it agains. three forecas.ing models.pers.s.ence,modified 24-hour pers.s.ence and leas. *** on three widely accepted s.atis.ical performance metrics.root mean s.uared error,mean abs.lute error and coefficient of determination),our hybrid model demons.rated s.perior predictiv. accuracy in v.rying weather conditions.and forecas. horizons.

关键词： s.lar power generation kernel ridge regres.ion hybrid model forecas.ing