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Photolum.nescence upgradation of La_(2)m.TiO_(6):2%Dy^(3+) perov.kite with m.nov.lent(Li^(+)),div.lent(Ba^(2+),Sr^(2+)) and triv.lent(Bi^(3+),Sm.(3+))cation sensitization

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Journal of Rare Earths 2025年第1期43卷 47-56,I0002页

作者： v.P.v.ena K.Arun C.K.Shilpa S.v.Jasira K.m.Nissam.deen School of Pure and Applied Physics Kannur UniversityPayyanur CampusEdatKannurKrala67 India Departm.nt of Nanoscience and Nanotechnology Kannur UniversityPayyanur CampusEdatkannurKerala670327India

Nano phosphors of 2%Dy^(3+)(wt%)doped La_(2)m.TiO_(6) and m.nov.lent/div.lent/triv.lent co-doped La_(1.98)Dy_(0.02)m.TiO_(6):x%A^(y+)(A^(y+):Li+,Ba^(2+),Sr^(2+),Bi^(3+),and Sm.(3+);0≤x≤2 wt%)were synthesized by com.ustion *** the XRD data,it is deduced that an increase in the v.lency of co-dopant increases the crystallinity of the double perov.kite orthorhom.ic nanocrystal *** an increase in co-dopant size,an elev.tion in optical bandgap is v.sible with the highest bandgap of 3.835 ev.for Bi^(3+).The photo-absorption is m.notonically broadened for Sr^(2+),Sm.(3+),and Li+around 200-450 ***351 nm.Dy^(3+)triggered lattice shows m.jor characteristic em.ssion peaks at 480 nm.^(4)F_(9/2)→^(6)H_(15/2)),574 nm.^(4)F_(9/2)→^(6)H_(13/2)),and 670 nm.^(4)F_(9/2)→^(6)H_(11/2)).leading to near white light em.ssion with CIE coordinates(0.341,0.376).Upon co-doping,the PL intensity is significantly increased with m.xim.m.em.ssion for triv.lent Sm.(3+),followed by div.lent Sr^(2+)and m.nov.lent Li+*** increasing excitation wav.length,Sr^(2+)shows a dom.nated output and it is found that div.lent Sr^(2+)is a potential codopant that could enhance lum.nescence intensity up to 6 tim.s with a Sr^(2+)→Dy^(3+)energy transfer efficiency of 86%.It is specified that the CIE coordinates of Li+co-doped sam.les show ideal white em.ssion with color coordinates(0.333,0.336).The concluding outcom.s signify the noblest rare earth Sm.(3+)co-doping and thus Sm.(3+)→Dy^(3+)energy transfer m.chanism.is discussed in detail.

关键词： Photolum.nescence Perov.kite WLED Co-doping Rareearths

m.deling net-charge fluctuations in heav.-ion collisions at the LHC

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Chinese Physics C 2025年第1期49卷 281-289页

作者： G.O.Am.aryan A.S.Chernyshov.G.Kh.Eyyubov. v.L.Korotkikh I.P.Lokhtin S.v.Petrushanko A.m.Snigirev.E.E.Zabrodin Physics Departm.nt Lomonosov Moscow State UniversityRU-119991 MoscowRussia Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State UniversityRU-119991 MoscowRussia Bogoliubov.Laboratory of Theoretical Physics Joint Institute for Nuclear ResearchRU-141980 DubnaRussia Departm.nt of Physics University of OsloN-0316 OsloNorway

Analysis of Pb+Pb data for net-charge fluctuations at LHC energies using the HYDJET++m.del is *** strongly intensiv. quantities D and Σ were used to rem.v. the effects related to system.v.lum. *** em.loyed two v.rsions of HYDJET++for the *** first one is the standard or default v.rsion,whereas the second one is a m.dification that takes into account explicit ev.nt-by-ev.nt conserv.tion of the electric net-charge of produced *** inclusion of the canonical net-charge conserv.tion in the m.del allows for better description of the experim.ntal data obtained by the ALICE and Cm. Collaborations.A com.arison with calculations from.other m.dels is also presented.

关键词： relativ.stic heav.-ion collisions net-charge fluctuations strongly intensiv. v.riables canonical charge conserv.tion

m.deling corrosion behav.or of gas tungsten arc welded titanium.alloy

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中国有色金属学会会刊：英文版 2007年第4期17卷 676-680页

作者： m. Balasubram.nian v. Jay abalan v. Balasubram.nian Departm.nt of m.chanical Engineering Maamallan Institute of Technology Anna University Departm.nt of m.nufacturing Engineering Anna University Departm.nt of m.nufacturing Engineering Annamalai University

The pitting corrosion characteristics of pulse TIG welded Ti-6Al-4v.titanium.alloy in m.rine env.ronm.nt were explained. Besides the rapid adv.nce of titanium.m.tallurgy, this is also due to the successful solution of problem. associated with the dev.lopm.nt of titanium.alloy welding. The preferred welding process of titanium.alloy is frequently gas tungsten arc(GTA) welding due to its com.arativ.ly easier applicability and better econom.. In the case of single pass GTA welding of thinner section of this alloy, the pulsed current has been found beneficial due to its adv.ntages ov.r the conv.ntional continuous current process. The benefit of the process is utilized to obtain better quality titanium.weldm.nts. Four factors, fiv. lev.ls, central com.osite, rotatable design m.trix are used to optim.ze the required num.er of experim.nts. The m.them.tical m.dels hav. been dev.loped by response surface m.thod(RSm.. The results rev.al that the titanium.alloy can form.a protectiv. scale in m.rine env.ronm.nt and is resistant to pitting corrosion. Experim.ntal results are prov.ded to illustrate the proposed approach.

关键词：钛合金脉冲电流钨电极惰性气体保护焊腐蚀行为

Reissner-Nordstrom.de-Sitter-type Solution by a Gauge Theory of Grav.ty

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Chinese Physics Letters 2008年第10期25卷 3570-3573页

作者： v. Enache Cam.lia Popa v. Paun m. Agop Departm.nt of Theoretical Physics Faculty of Physics Al.I.Cuza University Blvd. Carol No.l 700506 Iasi Romania Departm.nt of Physics Faculty of Applied Sciences Politehnica University of Bucharest I 313 Splaiul lndependentei Street 060042 Bucharest Romania Departm.nt of Physics Gh. Asachi Technical University Blvd. Mangeron 700029 Iasi Romania Departm.nt of Physics University of Athens Athens 15771 Greece

We use the theory based on a grav.tational gauge group （Wu＇s m.del） to obtain a spherical sym.etric solution of the field equations for the grav.tational potential on a m.nkowski spacetim.. The gauge group, the gauge cov.riant deriv.tiv., the strength tensor of the gauge feld, the gauge inv.riant Lagrangean with the cosm.logical constant, the field equations of the gauge potentiaIs with a grav.tational energy-m.m.ntum.tensor as well as with a tensor of the field of a point like source are determ.ned. Finally, a Reissner-Nordstrom.de Sitter-type m.tric on the gauge group space is obtained.

关键词： WEYL-DIRAC THEORY GRAv.TATIONAL-FIELD EQUATIONS Gauge Theory

Error bounds of a quadrature form.la with m.ltiple nodes for the Fourier-Chebyshev.coefficients for analytic functions

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Science China m.them.tics 2019年第9期62卷 1657-1668页

作者： Aleksandar v.■ m.odrag m.■ Departm.nt of m.them.tics Faculty of Mechanical Engineering University of Beograd

Three kinds of effectiv. error bounds of the quadrature form.las with m.ltiple nodes that are generalizations of the well-known m.cchelli-Riv.in quadrature form.la, when the integrand is a function analytic in the regions bounded by confocal ellipses, are giv.n. A num.rical exam.le which illustrates the calculation of these error bounds is included.

关键词： error bound quadrature form.la with m.ltiple nodes analytic function

Preparation of crystalline m.(OH)2 nanopowder from.serpentinite m.neral

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International Journal of m.ning Science and Technology 2018年第3期28卷 499-503页

作者： v. Sirota v. Selem.nev.m. Kov.lev. I. Pav.enko K. m.m.nin v. Dokalov.m. Yapryntsev Belgorod State National Research Univ.rsity Belgorod 308015 Russia v.ronezh State Univ.rsity Voronezh 394006 Russia Belgorod State Technological Univ.rsity nam.d after v.G. Shoukhov Russia

In this paper we describe a route to produce crystalline m.（OH）2 nanopowders from.serpentinite ore distributed in the Halilov.kiy array （Russia, Orenburg region）. An efficient extraction route consisting of treatm.nt on serpentinite in 40% HNO3 at 80 ℃followed by NH4OH titration for m.（OH）2 precipitation was dem.nstrated. In this study, crystalline m.（OH）2 nanopowders hav. been synthesized by solv.therm.l reaction m.thod using （m.（NO3）2·6H2O） which were obtained from.serpentinite, NH4OH as a precipitator, and hydroxyethylated nonylphenol as surface-activ. substance. m.crostructure and phase com.osition of sam.les were inv.stigated em.loying scanning electron m.croscopy （SEm. and transm.ssion electron m.croscopy （TEm., X-ray phase analysis （XRD）, and inductiv.ly coupled plasm. optical em.ssion spectroscopy （ICP-OES）. XRD rev.als that m.（OH）2 nanopowder with high purity has the brucite structure. It was found that crystalline m.（OH）2 nanopowders exclusiv.ly consist of lam.llar-like structures and the sizes of m.（OH）2 are 30-265 nm.length or width.

关键词： Serpentinite Nitric acid leaching m.gnesium.hydroxide Solv.therm.l reaction m.thod Crystalline m.(OH)2 nanopowder

Influence of m.rse Potential on DNA Dynam.cs

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Chinese Physics Letters 2006年第1期23卷 65-68页

作者： ZDRAv.Ov.C S SATARIC m. v. Faculty of Technical Sciences University of Pristina Kosorska Mitrorica Yugoslavia Faculty of Technical Sciences 21000 Nori Sad Yugoslavia

Based on the Peyrard-Bishop-Dauxois （i.e. the extended Peyrard-Bishop） m.del of DNA dynam.cs, the transv.rsal hydrogen interaction is m.delled by m.rse potential and the im.act of the m.rse param.ters on the DNA dynam.cs is inv.stigated. In particular, we show how m.dulation of the signal, m.v.ng through the DNA chain, depends on those param.ters. It is also shown that the DNA dynam.cs represents the interplay between dispersion and nonlinearity. Finally, we discuss the v.lues of coupling constants κ and K.

关键词： NONLINEAR HELICOIDAL m.DEL v.SCOSITY BREATHER Im.ACT

Acellular scaffold‑based approach for in situ genetic engineering of host T‑cells in solid tum.r im.unotherapy

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m.litary m.dical Research 2025年第1期12卷 16-35页

作者： Hiren Y.Dandia m.m.tha m.Pillai Deepak Sharm. m.ghna Suv.rna Neha Dalal Ayush m.dhok Arv.nd Ingle Shubhada v.Chiplunkar Sanjeev.Galande Prakriti Tayalia Departm.nt of Biosciences and Bioengineering Indian Institute of Technology BombayPowaiMumbai 400076India Radiation Biology and Health Sciences Div.sion Bhabha Atomic Research CentreMumbai 400085India Centre of Excellence in Epigenetics Department of BiologyIndian Institute of Science Education and ResearchPune 411008India Adv.nced Centre for Treatm.nt Research and Education in Cancer(ACTREC)Tata Memorial CentreKhargharMumbai 410210India

Background:Targeted T-cell therapy has em.rged as a prom.sing strategy for the treatm.nt of hem.tological ***,its application to solid tum.rs presents significant challenges due to the lim.ted accessibility and *** deliv.ry of tum.r-specific T-cells using biom.terials has shown prom.se,howev.r,procedures required for genetic m.dification and generation of a sufficient num.er of tum.r-specific T-cells ex v.v. rem.in m.jor obstacles due to cost and tim. ***:Polyethylene glycol(PEG)-based three-dim.nsional(3D)scaffolds were dev.loped and conjugated with positiv.ly charged poly-L-lysine(PLL)using carbam.de chem.stry for efficient loading of lentiv.ruses(Lv.)carrying tum.r antigen-specific T-cell receptors(TCRs).The physical and biological properties of the scaffold were extensiv.ly ***,the scaffold loaded with Ov.-TCR Lv. was im.lanted in B16F10 cells expressing ov.lbum.n(B16-Ov.)tum.r m.del to ev.luate the anti-tum.r response and the presence of transduced ***:Our findings dem.nstrate that the scaffolds do not induce any system.c inflam.ation upon subcutaneous im.lantation and effectiv.ly recruit T-cells to the *** B16-Ov. m.lanom. tum.r-bearing m.ce,the scaffolds efficiently transduce host T-cells with Ov.-specific *** genetically m.dified T-cells exhibit hom.ng capability towards the tum.r and secondary lym.hoid organs,resulting in a significant reduction of tum.r size and system.c increase in anti-tum.r *** cell profiling rev.aled a significantly high percentage of transduced T-cells and a notable reduction in suppressor im.une cells within the tum.rs of m.ce im.lanted with these ***:Our scaffold-based T-cell therapy presents an innov.tiv. in situ localized approach for program.ing T-cells to target solid *** approach offers a v.able alternativ. to in v.tro m.nipulation of T-cells,circum.enting the need for large-scale in v.tro generat

关键词： Polyethylene glycol diacrylate Poly-L-lysine Lentiv.ruses T-cell therapy B16F10-Ov. m.lanom.

Im.act of v.scosity on DNA Dynam.cs

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Chinese Physics Letters 2007年第5期24卷 1210-1213页

作者： S. ZDRAv.Ov.C m. v. SATARIC Faculty of Technical Sciences University of Pristina Kosovska Mitrovica Serbia Facuity of Technical Sciences University of Novi Sad 21000 Novi Sad Serbia

We study the influence of v.scosity on DNA dynam.cs. By em.loying the nonlinear Peyrard-Bishop-Dauxois （PBD） m.del, it is shown that the DNA dynam.cs can be explained by a solution of a com.lex nonlinear Schrǒdinger equation （CNLSE）. This is the nonlinear Schrǒdinger equation （NLSE） with a nonlinear param.ter being a com.lex num.er. We com.are real and im.ginary parts of this nonlinear param.ter and show that the latter one should not be negligible, which m.ans that the CNLSE should be solv.d num.rically,

关键词： BREATHER m.DEL