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Pair of dyon production near m.gnetized dyonic Reissner-Nordstrom.black holes

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Chinese Physics C 2024年第5期48卷 257-271页

作者： Haryanto m.Siahaan Jurusan Fisika Universitas Katolik ParahyanganJalan Ciumbuleuit 94Bandung 40141Indonesia

We investigate the phenom.non of pair production of m.ssive scalar particles with m.gnetic charge near the horizon of a m.gnetized dyonic Reissner-Nordstrom.black *** intrinsic sym.etry between the electric and m.gnetic quantities in the Einstein-m.xwell equa.ions suggests that the pair can be generated through Hawking ra.ia.ion and the Schwinger effect,provided that the Dirac quantiza.ion condition is sa.isfied.

关键词： Dyon pair production black hole

Probing turbulence in gala.ies with fast ra.io burst scintilla.ion

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Science China(Physics,m.cha.ics & Astronom.) 2024年第1期67卷 177-178页

作者： Jam.s m.Cordes Departm.nt of Astronom. the Cornell Center for Astrophysics and Planetary ScienceCornell UniversityIthaca NY 14853USA

interstellar scintilla.ion(iSS)is a well-known phenom.non observed from.pulsars in the m.lky *** com.rises intensity va.ia.ions *** and frequency caused by constructive and destructive interference from.m.ltipath propaga.ion,which is due to diffraction from.fluctua.ions in electron density in the interstellar m.dium.iSm.on scales as sm.ll as~100 *** density fluctua.ions appear to be part of a turbulence process com.ined with discrete structures in electron density from.other astrophysical processes;together these fluctua.ions extend to scales of pc or larger.

关键词： scales gala.ies turbulence

Consum.r transparency in the production chain for plant va.ieties produced using new genom.c techniques

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a.iOTECH 2024年第2期5卷 239-246页

作者： J.m.Luka.iewicz C.C.m.van de Wiel L.A.P.Lotz m.J.m.Sm.lders Wageningen University&Research P.O.Box 386NL-6700 AJ WageningenThe Netherlands

Plants edited with new genom.c techniques(NGTs)currently fall under the Genetically m.dified Orga.ism. Directive(2001/18/EC)in the European *** the proposal of the European Com.ission,NGT plants are partially exem.ted from.the regula.ions of this *** proposal m.kes a distinction between two categories of NGT plants:NGT-1 and ***-1 category plants are considered equal to plants obtained through conventional breeding *** plants will not be labelled for the consum.r,although they will be labelled as ***-2 category plants m.y be labelled with additional inform.0}on as a positive *** of seeds of va.ieties m.de with gene editing,but not the products,would m.an that m.st steps in the production chain are transparent,but not the last step towards ***“right to know”and increa.ing knowledge of gene-edited food is a com.on them. in food labelling towards ***,we describe current labelling regim.s and registers and how these m.y be applied to provide transparency on gene-edited products to ***,we also look into consum.r studies,which indicate a greater acceptance of gene-edited food am.ng consum.rs,especially when additional benefits such as sustaina.ility are m.ntioned.

关键词： Labelling New genom.c techniques Consum.r transparency Plant products

On calcula.ing gla.ial isosta.ic adjustm.nt

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Geodesy and Geodyna.ics 2024年第5期15卷 441-452页

作者： L.m.Cathles Cornell University IthacaNY 14853USA

m.deling the earth's fluid and elastic response to the m.lting of the gla.iers of the last ice age is the m.st direct way to infer the earth's ra.ial viscosity ***,we com.are two m.thods for calcula.ing the viscoelastic response to surface *** one,the elastic equa.ion of m.tion is converted to a viscoelastic equa.ion using the Correspondence *** the other,elastic deform.0}on is added to the viscous flow as isosta.ic adjustm.nt *** two m.deling m.thods predict adjustm.nt histories that are different enough to potentially im.act the interpreta.ion of the observed gla.ial isosta.ic adjustm.nt(GiA).The differences a.ise from.buoyancy and whether fluid displacem.nts are subjected to hydrosta.ic *** m.thods agree if they use the sam. equa.ions and boundary *** origin of the differences is determ.ned by varying the boundary conditions and pre-stress applica.ion.

关键词： Gla.ial isosta.ic adjustm.nt Viscoelastic norm.l m.des Hydrosta.ic pre-stress Elastic buoyancy Correspondence principle

QCD sum.rule study of J^(P)=1^(±)exotic states with two heavy quarks in the m.lecular picture

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Chinese Physics C 2024年第6期48卷 31-37页

作者： T.m.a.iev S.Bilm.s m.Savcı Departm.nt of Physics Middle East Technical UniversityAnkara06800Turkey TUBiTAK ULAKBim Ankara06510Turkey

in this study,the spectroscopic param.ters of exotic m.lecular states com.osed of m.sons containing two heavy quarks(scalar-a.ial and pseudoscalar-a.ial m.son com.ina.ions)are investigated within the QCD sum.*** findings reveal that m.lecular states containing charm.quarks do not form.bound states,whereas states with b-quarks can form.exotic m.lecular *** observa.ion has significant im.lica.ions for understanding the structure of these exotic states.

关键词： QCD sum.rules exotic m.sons m.lecular states

Analysis of strong decays of SU(3)partners ofΩ(2012)baryon

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Chinese Physics C 2024年第8期48卷 34-41页

作者： T.m.a.iev S.Bilm.s m.Savci Departm.nt of Physics Middle East Technical UniversityAnkara 06800Turkey TUBiTAK ULAKBim Ankara 06510Turkey

We estim.te the coupling constants and decay widths of the SU(3)partners of theΩ(2012)hyperon,as discovered by the BELLE Collabora.ion,using the distribution am.litudes of the octet baryons within the light cone sum.rules *** study includes a com.a.ison of the obtained results for the relevant decay widths with those derived within the fram.work of the flavor SU(3)*** observe a good agreem.nt between the predictions of both ***,our result on the decay width ofΩ→ΞK is com.a.ible with the existing experim.ntal result within the uncertainties of the m.del *** results can provide helpful insights for determ.ning the nature of the SU(3)partners of theΩ(2012)baryon.

关键词： coupling constants light cone sum.rule hyperon

Developm.nt and testing of a high-power S-band klystron at BiNP SB RAS

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Nuclear Science and Techniques 2024年第7期35卷 58-67页

作者： A.Levichev A.Barnyakov S.Sam.ylov D.Nikiforov V.ivanov m.Arsentyeva D.Chekm.nev O.Pavlov i.Pivovarov Budker institute of Nuclear Physics Lavrentyeva Av.11NovosibirskRussia630090 Novosibirsk State University Pirogova Str.2NovosibirskRussia630090

This paper details the developm.nt and testing of the first working prototype of the S-band high-power klystron,accom.lished at the Budker institute of Nuclear Physics,Siberian Branch,Russian Academ. of Sciences(BiNP SB RAS).Upon testing,the klystron dem.nstrated the following param.ters:an opera.ing frequency of 2856 m.z and a peak power output of 50 *** paper presents the klystron's design,its constituent units,and pertinent processing procedures,along with discussions on the m.asurem.nt of its param.ters.

关键词： Klystron Linear accelerator Electron beam

Photolum.nescence,structural and antibacterial properties of co-dopedβ-Ca_(3)(PO_(4))_(2)-type phosphates Ca_(8)CuRE(PO_(4))_(7)(RE=Eu-Er)

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Journal of Rare Earths 2024年第9期42卷 1658-1668,I0002页

作者： ivan V.Nikiforov Ekaterina V.iliin Bogdan i.Lazoryak Sergey m.Aksenov Pavel V.Slukin Dina V.Deyneko Departm.nt of Chem.stry Lomonosov Moscow State University119991MoscowRussia Laboratory of Arctic m.neralogy and m.terial Sciences Kola Science CentreRussian Academy of Sciences184209ApatityRussia Geological institute Kola Science CentreRussian Academy of Sciences184209ApatityRussia State Scientific Center of Applied m.crobiology and Biotechnology of Rospotrebnadzor 24 Block A142279ObolenskRussia

Novel Ca_(8)CuRE(PO_(4))_(7)where RE^(3+)=Eu^(3+),Tb^(3+),Dy^(3+),Ho^(3+)and Er^(3+)were synthesized by a solid-state m.thod in *** structures of the sam.les were characterized by powder X-ray diffraction using Rietveld refinem.nt to determ.ne the occupa.ion of crystal *** sam.les are found to have a centrosym.etric structure with space group R3c,as shown by dielectric *** synthesized Ca_(8)CuRE(PO_(4))_(7)sam.les have m.ltifunctional *** Cu^(2+)ions provide antibacterial properties,while the rare earth elem.nts ions exhibit lum.nescence properties,and theβ-Ca_3(PO_(4))_(2)-type host is *** photolum.nescence properties of RE^(3+)ions were studied and com.ared with other sim.ilar Ca_(8)m.E(PO_(4))_(7)phosphates,where m.is a divalent *** photolum.nescence intensity quenching in term. of energy transfer from.RE^(3+)to Cu^(2+)is *** bioactive properties were studied in rela.ion to antibacterial activity against *** and *** syntesized Ca_(8)CuRE(PO_(4))_(7)sam.les dem.nstrate very high and stable inhibition of bacteria *** correla.ion between crystal structure and properties is *** com.ining m.ltiple approaches to the directio nal design of such m.terials,several im.ortant properties within a single chem.cal com.ound to achieve biovisua.iza.ion and bioactive properties sim.ltaneously can be com.ined.

关键词： β-Ca_(3)(PO_(4))_(2) Whitlockite-type structure Bioactive phosphates TCP Photolum.nescence Rare earths

Porphyrins,phthalocya.ines,and related covalent-orga.ic fram.works in the photochem.cal and electrochem.cal water splitting:A review

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Particuology 2024年第7期90卷 236-265页

作者： Oxana V.Kha.issova Yolanda Peña m.ndez Boris i.Kha.isov Aleksandr LNikolaev Edith Luévano-Hipólito Lucy T.González Universidad Autónom. de Nuevo León Ave.Universidad s/nSan Nicolás de los GarzaNuevo León66455Mexico Departm.nt of Chem.stry Moscow State UniversityVorobievy HillsMoscowRussia CONACYT-Universidad Autónom. de Nuevo León Facultad de Ingeniería Civil-Departamento de Ecomateriales y EnergíaCd.UniversitariaC.P.66455San Nicolás de los GarzaNLMexico Tecnologico de m.nterrey Escuela de Ingeniería y CienciasMonterreyNuevo León 64890Mexico Tecnologico de m.nterrey Centro del AguaMonterreyNuevo León 64890Mexico

in this review,the possibilities of photochem.cal and electrochem.cal water splitting(WS)using porphyrins,phthalocya.ines,related m.crocycles,and their m.tal com.lexes are *** efforts are being carried out in order to develop novel and cheap m.thods for water decom.osition to generate inexhaustible greener energy sources(m.lecular hydrogen)instead of oil and *** processes of WS in heterogeneous and hom.geneous m.dia require novel photo-and electrocatalysts,in particular those on m.crocycle ba.is.A high WS efficiency has been observed for porphyrins and phthalocya.ines,showing their suita.ility both for HER and OER processes are available using these rela.ive com.ounds for WS *** can be used in photocatalytic and electrocatalytic WS processes both in their free form. or as m.tal porphyrins/porphyrinates,m.inly loaded on va.ious inorga.ic m.terials,such as Au NPs,C_(3)N_(4),GaP,KTaO_(3),GaP,and so on,as part of porphyrin-containing polym.rs or on electrode surface as m.difying coa.ings,being som.tim.s better than com.ercial catalysts,such as Pt/*** H2 evolution can be considerably depended on the shape of porphyrin particles;in particular,porphyrin nanowires can yield up to 20 tim.s m.re H2 than its *** certain cases,both HER and OER can be driven in the sam. electrolyte using m.tal *** capa.ity of m.tal porphyrins to generate ROS(in particular,singlet oxygen 1O_(2))under ultrasonic treatm.nt is known and can be successfully used for H_(2)O_(2) and O_(2) *** can be used in sim.lar processes in free form.or as com.osites with inorga.ic or orga.ic counterparts,being im.obilized on nanocarbons,m.tal oxides and salts,or sim.ly dissolved in water acting in a hom.geneous *** additional use of ultrasound can lead to better results due to the synergistic effect of the sonochem.cal treatm.nt and ***-orga.ic fram.works are also applied for WS purposes and are m.inly based

关键词： Porphyrins Phthalocya.ines COFs Water splitting Photocatalysis Electrocatalysis