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Prom.t neutron em.ssion in ^(250)No spontaneous fission associated with ground and isom.ric state decays

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Chinese Physics C 2024年第6期48卷 112-117页

作者： R.S.m.khin A.v.Isaev.A.v.Andreev.m.L.Chelnokov.v.I.Chepigin H.m.Dev.raja I.N.Izosim.v.A.A.Kuznetsov. O.N.m.lyshev.A.G.Popeko Yu.A.Popov.A.Rahm.tinejad B.Sailaubekov.T.m.Shneidm.n E.A.Sokol A.I.Sv.rikhin m.S.Tezekbayev. m.A.Bychkov.A.v.Yerem.n O.Dorv.ux B.Gall K.Kessaci K.Hauschild A.Lopez-m.rtens Joint Institute for Nuclear Research Dubna141980Russia Dubna State Univ.rsity Dubna141982Russia Institute of Nuclear Physics Almaty050032Kazakhstan L.N.Gum.lyov.Eurasian National Univ.rsity Astana010008Kazakhstan Kazan Federal Univ.rsity Kazan420008Russia Univ.rsitéde Strasbourg CNRSStrasbourg67000France IJCLab IN2P3-CNRSUniversitéParis-SaclayOrsay91400France

The com.lete-fusion reaction^(204)Pb(^(48)Ca,2n)^(250)No was used to study two activ.ties of^(250)No with distinct half-liv.s.A total of 1357 ev.nts were observ.d in the SFiNx neutron detection *** av.rage num.er of neutrons em.tted per spontaneous fission of^(250)No was determ.ned to be(4.1±0.1).The unusually sym.etrical shape of the prom.t neutron m.ltiplicity distribution was restored and presented for the first *** tests were perform.d to com.are the prom.t neutron m.ltiplicity distributions associated with the ground state and K-isom.r state decays.

关键词： spontaneous fission prom.t neutrons actinide

Harv.sting Energy v.a Water m.v.m.nt and Surface Ionics in m.crofibrous Ceram.c Wools

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ENERGY & ENv.RONm.NTAL m.TERIALS 2024年第6期7卷 332-341页

作者： Kaur, m.npreet Alagum.lai, Av.nash m.hian, Om.d Osm.n, Sam.h m. Nagao, Tadaaki Wang, Zhong Lin Natl Inst m.t Sci NIm. Res Ctr Mat Nanoarchitecton WPI MANA 1-1 Namiki Tsukuba Ibaraki 3050044 Japan Univ.Calgary Dept Chem & Petr Engn 2500 Univ Dr NW Calgary AB T2N 1N4 Canada Hokkaido Univ Dept Condensed Matter Phys Sapporo Hokkaido 0600810 Japan Gm. Inst Technol Dept Mech Engn Rajam 532127 Andhra Pradesh India Ningbo Univ Fac Mech Engn & Mech Zhejiang Prov Engn Res Ctr Safety Pressure Vessel Ningbo 315211 Peoples R China Im.erial Coll London Dept Chem Engn London SW7 2AZ England Chinese Acad Sci Beijing Inst Nanoenergy & Nanosyst Beijing 100083 Peoples R China Tom.k State Univ Lab Convect Heat & Mass Transfer Tomsk 634045 Russia Georgia Inst Technol Sch Mat Sci & Engn Atlanta GA 30332 USA King Saud Univ Coll Sci Chem Dept POB 2455 Riyadh 11451 Saudi Arabia

Due to the push for carbon neutrality in v.rious hum.n activ.ties, the dev.lopm.nt of m.thods for producing electricity without relying on chem.cal reaction processes or heat sources has becom. highly significant. Also, the challenge lies in achiev.ng m.crowatt-scale outputs due to the inherent conductiv.ty of the m.terials and div.rting electric currents. To address this challenge, our research has concentrated on utilizing nonconductiv. m.dium. for water-based low-cost m.crofibrous ceram.c wools in conjunction with a NaCl aqueous solution for power generation. The m.in source of electricity originates from.the directed m.v.m.nt of water m.lecules and surface ions through densely packed m.crofibrous ceram.c wools due to the effect of dynam.c electric double layer. This occurrence bears resem.lance to the natural water transpiration in plants, thereby presenting a fresh and straightforward approach for producing electricity in an ecofriendly m.nner. The generator m.dule dem.nstrated in this study, m.asuring 12 x 6 cm.2), exhibited a noteworthy open-circuit v.ltage of 0.35 v. coupled with a short-circuit current of 0.51 m.. Such low-cost ceram.c wools are suitable for ubiquitous, perm.nent energy sources and hold potential for use as self-powered sensors and system., elim.nating the requirem.nt for external energy sources such as sunlight or heat. Electrokinetic power generation through ceram.c *** this work, m.crofibrous ceram.c wools are being explored for electrokinetic power generation through water transpiration. The generator m.dule m.asuring 12 x 6 cm.2), dem.nstrated a noteworthy open-circuit v.ltage of 0.35 v. coupled with a short-circuit current of 0.51 m.. This scalable ceram.c wool dev.ce generates electricity without relying on sunlight or heat.

关键词： ceram.c m.crofibers energy harv.sting power generation self-powered system. water ev.poration POWER-GENERATION GRAPHENE OXIDE TRIBOELECTRIC NANOGENERATOR CONTACT-ELECTRIFICATION ELECTRICITY LIQUID DRIv.N FLOW

Single atom.Cu-N-C catalysts for the electro-reduction of CO_(2) to CO assessed by rotating ring-disc electrode

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Journal of Energy Chem.stry 2024年第1期88卷 169-182,I0004页

作者： S.Pérez-Rodríguez m.Gutiérrez-Roa C.Gim.nez-Rubio D.Ríos-Ruiz P.Arév.lo-Cid m.v.m.rtínez-Huerta A.Zitolo m.J.Lázaro D.Sebastián Instituto de Carboquím.ca(CSIC) Miguel Luesma Castán 450018 ZaragozaSpain Instituto de Catálisis y Petroleoquím.ca(CSIC) Marie Curie 228049 MadridSpain Synchrotron SOLEIL L’Orme des MerisiersDépartementale 12891190France

The electrochem.cal CO_(2) reduction reaction(CO_(2)RR) to controllable chem.cals is considered as a prom.sing pathway to store interm.ttent renewable energy. Herein, a set of catalysts based on copper-nitrogendoped carbon xerogel(Cu-N-C) are successfully dev.loped v.rying the copper am.unt and the nature of the copper precursor, for the efficient CO_(2)RR. The electrocatalytic perform.nce of Cu-N-C m.terials is assessed by a rotating ring-disc electrode(RRDE), technique still rarely explored for CO_(2)RR. For com.arison, products are also characterized by online gas chrom.tography in a H-cell. The as-synthesized Cu-NC catalysts are found to be activ. and highly CO selectiv. at low ov.rpotentials(from.-0.6 to -0.8 v.***) in 0.1 m.KHCO_(3), while H_(2) from.the com.etitiv. water reduction appears at larger ov.rpotentials(-0.9 v.v.. RHE). The optim.m.copper acetate-deriv.d catalyst containing Cu-N_(4) m.ieties exhibits a CO_(2)-to-CO turnov.r frequency of 997 h^(-1) at -0.9 v.v.. RHE with a H_(2)/CO ratio of 1.8. These results dem.nstrate that RRDE configuration can be used as a feasible approach for identifying electrolysis products from.CO_(2)RR.

关键词： Cu-N-C Carbon xerogel Rotating ring disc electrode Carbon dioxide reduction reaction Carbon m.noxide

Ion heat transport in electron cyclotron resonance heated L-m.de plasm. on the T-10 tokam.k

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Plasm. Science and Technology 2024年第4期26卷 52-60页

作者： v.A.KRUPIN m.R.NURGALIEv.A.R.NEm.TS I.A.ZEm.SOv.S.D.SUNTSOv.T.B.m.ALTON D.S.SERGEEv.N.A.SOLOv.v.D.v.SARYCHEv.D.v.RYJAKOv.S.N.TUGARINOv.N.N.NAUm.NKO National Research Centre“Kurchatov.Institute” Moscow 123182Russia Baum.n m.scow State Technical Univ.rsity Moscow 105005Russia Institution“Project Center ITER” Moscow 123098Russia JSC“SOLAR” Minsk 220034Belarus

Anom.lous ion heat transport is analyzed in the T-10 tokam.k plasm. heated with electron cyclotron resonance heating(ECRH) in second-harm.nic extra-ordinary m.de. Predictiv. m.deling with em.irical scaling for Ohm.cal heat conductiv.ty shows that in ECRH plasm.s the calculated ion tem.erature could be ov.restim.ted, so an increase of anom.lous ion heat transport is required. To study this effect two scans are presented: ov.r the EC resonance position and ov.r the ECRH power. The EC resonance position v.ries from.the high-field side to the low-field side by v.riation of the toroidal m.gnetic field. The scan ov.r the heating power is presented with on-axis and m.xed ECRH regim.s. Discharges with high anom.lous ion heat transport are obtained in all considered regim.s. In these discharges the power balance ion heat conductiv.ty exceeds the neoclassical lev.l by up to 10 tim.s. The high ion heat transport regim.s are distinguished by three param.ters: the ratio Te/Ti, the norm.lized electron density gradient R/■, and the ion–ion collisionality νii~*. The com.ination of high Te/Ti, high νii~*, and R/■=6-10 results in v.lues of norm.lized anom.lous ion heat fluxes up to 10 tim.s higher than in the low transport scenario.

关键词： tokam.k L-m.de electron cyclotron resonance heating ion heat transport

Experim.ntal and num.rical inv.stigation on alternativ.s to sandy grav.l

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Defence Technology（防务技术） 2024年第1期31卷 130-141页

作者： v.Denefeld H.Aurich Fraunhofer Institute for High-Speed Dynam.cs Ernst-Mach-Institut(EMI)Ernst-Zermelo-Str.479104FreiburgGermany Fraunhofer Institute for High-Speed Dynam.cs Ernst-Mach-Institut(EMI)Am Christianswuhr 279400KandernGermany

The NATO agreem.nt STANAG 4569 defines the protection lev.ls for the occupants of logistic and light arm.red *** Allied Engineering Publication,AEP-55,v.lum. 2 docum.nt outlines the test conditions for underbelly im.rov.sed explosiv. dev.ce(IEDs),which m.st be buried in water-saturated sandy *** use of sandy grav.l has som. drawbacks,for instance reproducibility,tim. consum.tion,and *** paper focuses on the inv.stigation of four alternativ.s to sandy grav.l,which could produce sim.lar specific and cum.lativ. im.ulses:a concrete pot filled with water,a concrete pot filled with quartz sand,a steel pot without filling and a concrete pot filled with glass spheres(diam.ter 200μm.300μm.and different water *** im.ulses are m.asured with a ring technology dev.loped at the Fraunhofer Em..A num.rical soil m.del based on the work of m.rrs,2014 and Fi serov.a,2006 and considering the soil m.isture was used to sim.late the experim.nts with glass spheres at different water contents,showing m.ch better agreem.nt with the experim.nts than the classical Laine&Sandv.k m.del,ev.n for high saturation *** results can be used to create new test conditions at original scale that are m.re cost-effectiv.,m.re reproducible and sim.ler to m.nage in com.arison to the current tests carried out with STANAG sandy grav.l.

关键词： Im.rov.sed explosiv. dev.ce(IED) Specific im.ulse m.m.ntum.transfer Sandy grav.l Glass spheres Num.rical m.del Soil m.isture

Catalytic co-com.ustion of biom.ss and brown coal in a fluidized bed:Econom.c and env.ronm.ntal benefits

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Journal of Env.ronm.ntal Sciences 2024年第6期140卷 24-36页

作者： Yury v.Dubinin Nikolay A.Yazykov.Petr m.Yeletsky Rom.n B.Tabakaev.Aleksandra I.Belyanov.kaya v.dim.A.Yakov.ev Federal Research Center Boreskov.Institute of Catalysis SB RAS Lavrentiev Ave.5Novosibirsk630090Russia Univ.rsity of Tyum.n Volodarskogo str.6Tyumen625003Russia

The work is dev.ted to the study of com.ustion of brown coal,pine sawdust,and their m.xtures in a fluidized bed of catalyst at 600-750℃.It is shown that an increase in the content of sawdust in a m.xture with brown coal leads to an increase in the burnout degree of solid fuel from.94.4%to 99.9%,while the em.ssion of greenhouse gases in the form.of CO_(2)CO and NOxis reduced(CO_(2)from.the biom.ss is not included in the balance).The high content of alkaline earth m.tal oxides(CaO and m.O)in the m.neral part of brown coal,sawdust,and their m.xtures elim.nates the em.ssion of sulfur oxides and the slagging of heat-exchange surfaces during the com.ustion in a fluidized bed of *** optim.l tem.erature,when the highest burnout degree of the abov. fuels is achiev.d in the com.ustion is 750℃.It is also shown that the increase in tem.erature and the content of sawdust in the com.osition of the fuel m.xtures has a positiv. effect on the econom.c and env.ronm.ntal process indicators.

关键词： Co-com.ustion Fluidized catalyst bed Biom.ss Coal Econom.c effect Env.ronm.ntal im.act

Assessm.nt of sedim.nt connectiv.ty using m.delling and field-based approaches in the Slav.č Riv.r catchm.nt(m.rav.koslezskéBeskydy m.s,Czech Republic)

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Journal of m.untain Science 2024年第3期21卷 734-753页

作者： m.CUROv. Tereza ŠKARPICH v.clav Departm.nt of Physical Geography and Geoecology Faculty of ScienceUniversity of OstravaChittussiho 1071000 OstravaCzech Republic

m.untain stream. act as conv.yors of sedim.nts within the riv.r continuum.where the physical transport of sedim.nts between riv.r reaches through the catchm.nt or between indiv.dual parts(e.g.,between hillslopes and channels)of the catchm.nt is *** study focused on sedim.nt connectiv.ty analysis in the Slav.čRiv.r catchm.nt in the m.rav.koslezskéBeskydy m.s in the eastern part of the Czech *** connectiv.ty index and connectiv.ty index target m.delling were com.ined with an analysis of anthropogenic ***,field m.pping,grain size of bed sedim.nts and stream.power analysis were used to obtain inform.tion about connectiv.ty in the *** on the analysis and obtained results,terrain topography is the current m.in driv.ng factor affecting the connectiv.ty of sedim.nt m.v.m.nt in the Slav.čRiv.r ***,the m.delling prov.ded v.luable inform.tion about high sedim.nt connectiv.ty despite different recent land use conditions(highly forested area of the catchm.nt)than those in historical tim.s from.the 16th to 19th centuries when the Slav.čRiv.r catchm.nt was highly deforested and sedim.nt connectiv.ty was probably *** analysis of anthropogenic interv.ntions,field m.pping,grain size of bed sedim.nts and stream.power analysis rev.aled m.re deceleration of sedim.nt m.v.m.nt through the catchm.nt,decreased sedim.nt connectiv.ty with bed erosion,and gradual riv.r channel process transform.tion in som. *** m.pping has identified v.rious natural form.tions and hum.n-induced changes im.acting the longitudinal and lateral connectiv.ty in the Slav.č*** instance,em.ankm.nts along 48%of the riv.r's length,both on the right and left banks,significantly hinder lateral sedim.nt supply to the *** power index analysis indicates increased energy lev.ls in the flowing water in the riv.r's upper reaches(up to 404.8 W m.(-2)).This high energy is also observ.d in certain downstream.sections(up to 337.6 W

关键词： m.untain stream Connectiv.ty analysis m.delling Grain size analysis Slav.čRiv.r m.rav.koslezskéBeskydy m.s

In v.v. m.asurem.nt of NADH fluorescence lifetim. in skeletal m.scle v.a -ber-coupled tim.-correlated single photon counting

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Journal of Innov.tiv. Optical Health Sciences 2024年第1期17卷 121-134页

作者： Kathryn m.Priest Jacob v.Schluns Nathania Nischal Colton L.Gattis Jeffrey C.Wolchok Tim.thy J.m.ldoon Departm.nt of Biom.dical Engineering Univ.rsity of Arkansas FayettevilleARUSA

Nicotinam.de adenine dinucleotide(NADH)is a cofactor that serv.s to shuttle electrons during m.tabolic processes such as glycolysis,the tricarboxylic acid cycle,and oxidativ. phosphorylation(OXPHOS).NADH is autofluorescent,and itsfluorescence lifetim. can be used to infer m.tabolic dynam.cs in liv.ng ***-coupled tim.-correlated single photon counting(TCSPC)equipped with an im.lantable needle probe can be used to m.asure NADH lifetim. in v.v.,enabling inv.stigation of changing m.tabolic dem.nd during m.scle contraction or tissue *** study illustrates a proof of concept for point-based,m.nim.lly-inv.siv. NADHfluorescence lifetim. m.asurem.nt in *** m.scle loss(v.0})injuries were created in the left tibialis anterior(TA)m.scle of m.le Sprague Dawley *** lifetim. m.asurem.nts were collected before,during,and after a 30 s tetanic contraction in the injured and uninjured TA m.scles,which was subsequently-t to a biexponential decay m.del to yield a m.tric of NADH utilization(cytoplasm.c v. protein-bound NADH,the A11/A22 ratio).On av.rage,this ratio was higher during and after contraction in uninjured m.scle com.ared to m.scle at rest,suggesting higher lev.ls of free NADH in contracting and recov.ring m.scle,indicating increased rates of *** injured m.scle,this ratio was higher than uninjured m.scle ov.rall but decreased ov.r tim.,which is consistent with current knowledge of inflam.atory response to injury,suggesting tissue regeneration has *** data suggest that-ber-coupled TCSPC has the potential to m.asure changes in NADH binding in v.v. in a m.nim.lly inv.siv. m.nner that requires further inv.stigation.

关键词： Glycolysis oxidativ. phosphorylation energy m.tabolism v.lum.tric m.scle loss

Phase com.osition,conductiv.ty,and sensor properties of cerium.doped indium.oxide

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Nano m.terials Science 2024年第2期6卷 193-200页

作者： m.I.Ikim.G.N.Gerasim.v.v.F.Grom.v.O.J.Ilegbusi L.I.Trakhtenberg N.N.Sem.nov.Federal Research Center for Chem.cal Physics of RAS MoscowRussia Univ.rsity of Central Florida OrlandoFLUSA m.scow Institute of Physics and Technology(State Univ.rsity) DolgoprudnyMoscow RegionRussia Lom.nosov.m.scow State Univ.rsity MoscowRussia

The hydrotherm.l synthesis of In_(2)O_(3)and CeO_(2)–In_(2)O_(3)is inv.stigated as well as the properties of sensor layers based on these *** the synthesis of In_(2)O_(3),interm.diate products In(OH)_(3)and InOOH are form.d,which are the precursors of stable cubic(c-In_(2)O_(3))and m.tastable rhom.ohedral(rh-In_(2)O_(3))phases,respectiv.ly.A transition from.c-In_(2)O_(3)to rh-In_(2)O_(3)is observ.d with the addition of CeO_(2).The introduction of cerium.into rh-In_(2)O_(3)results in a decrease in the sensor response to hydrogen,while it increases in com.osites based on c-In_(2)O_(3).The data on the sensor activ.ty of the com.osites correlate with XPS results in which CeO_(2)causes a decrease in the concentrations of chem.sorbed oxygen and oxygen v.cancies in rh-In_(2)O_(3).The rev.rse situation is observ.d in com.osites based on c-In_(2)O_(3).Com.ared to In_(2)O_(3)and CeO_(2)–In_(2)O_(3)obtained by other m.thods,the synthesized com.osites dem.nstrate m.xim.m.response to H_(2)at low tem.eratures by 70–100℃,and hav. short response tim.(0.2–0.5 s),short recov.ry tim.(6–7 s),and long-term.stability.A m.del is proposed for the dependence of sensitiv.ty on the direction of electron transfer between In_(2)O_(3)and CeO_(2).

关键词： Cerium.oxide Indium.oxide Nanocom.osite Hydrotherm.l m.thod Cubic phase Rhom.ohedral phase Sensor response Conductiv.ty Hydrogen Response/recov.ry tim.