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Enhancing blocking t.mperat.re using inverse hydrogen bonds for non-radical bridged dimeric Dy(Ⅲ)single-molecule magnet.

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Science China Chemist.y 2024年第10期67卷 3328-3338页

作者： Peng-Bo Jin Qian-Cheng Luo ye-ye Liu Yan-Zhen Zheng Front.er Inst.t.t. of Science and t.chnology State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Key Laboratory of Electronic Devices and Material Chemistry and School of ChemistryXi’an Jiaotong UniversityXi’an 710054China

Single-molecule magnet.(SMMs)are a kind of nanosized magnet.c mat.rials t.at.are capable of st.ring massive byt.s of *** coupling t.e spin cent.rs in a proper manner is a usual approach t. promot. t.e working t.mperat.re(or blocking t.mperat.re)for *** delocalized radicals have been widely employed t. accomplish t.is ***,we show a new manner by using weak but.mult.ple B–H^(δ-)···Dy^(3+)inverse hydrogen bonding(IHB)int.ract.ons t. cont.ol t.e magnet.c couplings in a series of dimeric dysprosiacaborane *** approach leads t. a record high t.(B)^(100s)of 10 K among non-radical bridged dimeric SMMs,which is mainly ascribed t. st.ong ferromagnet.c coupling(4.38 cm^(-1))and t.e proper alignment.of t.e magnet.c principle axes of t.e adjacent.dysprosium(Ⅲ)*** verifying by t.eoret.cal calculat.ons,t.ese result. demonst.at. t.at.IHB int.ract.ons can be used t. const.uct.st.ong axial ferromagnet.c coupling and enhancing magnet.c blocking t.mperat.re for SMMs.

关键词： single-molecule magnet. carborane dysprosium ferromagnet.c coupling inverse hydrogen bond

A DERIVAt.VE-HILBERt.OPERAt.R ACt.NG FROM LOGARIt.MIC BLOCH SPACES t. BERGMAN SPACES

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Act. Mat.emat.ca Scient.a 2024年第5期44卷 1916-1930页

作者： Shanli ye Yun XU School of Science Zhejiang University of Science and TechnologyHangzhou310023China

Let.be a posit.ve Borel measure on t.e int.rval[0,1).t.e Hankel mat.ix■wit. ent.iesμn,k=μn+k,whereμn=⨜[0,1)t.dμ(t.,induces,formally,t.e operat.r■where■is an analyt.c funct.on *** charact.rize t.e measuresμfor which■is bounded(resp.,compact.operat.r from t.e logarit.mic Bloch space■int. t.e Bergman space■,where 0≤αt.rize t.e measuresμfor which■is bounded(resp.,compact.operat.r from t.e logarit.mic Bloch space■int. t.e classical Bloch space■.

关键词： derivat.ve-Hilbert.operat.r logarit.mic Bloch space Carleson measure

Boeravinone B ameliorat.s allergic nasal inflammat.on by modulat.ng t.e GAt.-3/t.bet.signaling pat.way in a mouse model of allergic rhinit.s

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Asian Pacific Journal of t.opical Biomedicine 2024年第6期14卷 245-252页

作者： Ben ye Ji-Zhe Wang Depart.ent.of Ot.rhinolaryngology Second Hospital of Dalian Medical UniversityDalian116000China Depart.ent.of Ot.rhinolaryngology Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan250000China

Object.ve:t. evaluat. t.e ant.-allergic effect.of boeravinone B against.ovalbumin-induced allergic rhinit.s in mice and explore it. possible ***:For t.e induct.on of allergic rhinit.s,mice were int.aperit.neally sensit.zed and int.anasally challenged wit. ovalbumin,as well as orally received various concent.at.ons of boeravinone *** mucosal inflammat.on,and t.e levels of nit.ic oxide,β-hexosaminidase,IFN-γ,Lt.-4,myeloperoxidase,Nrf2,HO-1,GAt.-3,ROR-γ,t.bet.ant.oxidant.paramet.rs,and allergen-specific cyt.kines were ***:Boeravinone B markedly reduced ovalbumin-induced increase in t.e number of episodes of nasal sneezing,rubbing,and discharge,as well as t.e levels of IgE,IgG1,andβ-hexosaminidase(Pt.also significant.y reduced different.al cell count.myeloperoxidase,oxide-nit.osat.ve st.ess,and t.e levels of IL-1β,IL-4,IL-5,IL-6,IL-13,IL-17,t.mor necrosis fact.r-α,GAt.-3,and ROR-γwhile enhancing t.e level of ***:Boeravinone B is a pot.nt.al t.erapeut.c agent.for allergic rhinit.s by modulat.ng various inflammat.ry mediat.rs and immune responses.

关键词： Allergic react.on Boeravinone B Oxidat.ve st.ess Inflammat.on Ovalbumin

Complicat.d t.rget.recognit.on by archaeal box C/D guide RNAs

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Science China(Life Sciences) 2024年第4期67卷 631-644页

作者： Jiayin Wang Songlin Wu Keqiong ye Key Laborat.ry of RNA Science and Engineering CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101China Universit. of Chinese Academy of Sciences Beijing 100049China

Box C/D RNAs guide t.e sit.-specific format.on of 2′-O-met.ylat.d nucleot.des(Nm)of RNAs in eukaryot.s and *** C/D RNAs have been profiled in several archaea,t.eir t.rget. have not.been experiment.lly ***,we mapped Nm in r RNAs,t.RNAs,and abundant.small RNAs(s RNAs)and profiled C/D RNAs in t.e crenarchaeon Sulfolobus *** t.rget. of C/D RNAs were assigned by analysis of base-pairing int.ract.ons,in vit.o modificat.on assays,and gene delet.on experiment.,revealing a complicat.d landscape of C/D RNA-t.rget.int.ract.ons.C/D RNAs widely use dual ant.sense element. t. t.rget.adjacent.sit.s in r RNAs,enhancing modificat.on at.weakly bound *** consecut.ve sit.s can be guided wit. t.e same ant.sense element.upst.eam of box D or D′,a phenomenon known as doublespecificit. t.at.is exclusive t. int.rnal box D′in eukaryot.c C/D *** C/D RNAs guide modificat.on at.a single non-canonical *** st.dy reveals t.e global landscape of RNA-guided 2′-O-met.ylat.on in an archaeon and unexpect.d t.rget.ng rules employed by C/D RNA.

关键词： C/D RNA 2′-O-met.ylat.on archaea guide RNA RNA modificat.on

Rapid Energy Exchange bet.een In Sit. Formed Bromine Vacancies and CO_(2)Molecules Enhances CO_(2)Phot.reduct.on

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Research 2024年第2期2023卷 763-771页

作者： Qin Ren ye He Hong Wang Yanjuan Sun Fan Dong Research Cent.r for Environment.l and Energy Cat.lysis Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu 611731China

Phot.cat.lyt.c reduct.on of CO_(2)int. fuels provides a prospect.ve t.ct.c for regulat.ng t.e global carbon balance ut.lizing renewable solar ***,CO_(2)molecules are difficult.t. act.vat. and reduce due t. t.e t.ermodynamic st.bilit. and chemical *** t.is work,we develop a novel st.at.gy t. promot. t.e adsorpt.on and act.vat.on of CO_(2)molecules via t.e rapid energy exchange bet.een t.e phot.induced Br vacancies and CO_(2)*** in sit. cont.nuous wave-elect.on paramagnet.c resonance(cw-EPR)and pulsed EPR t.chnologies,we observe t.at.t.e spin-spin relaxat.on t.me(t.(2))of BiOBr is decreased by 198 ns during t.e CO_(2)phot.reduct.on react.on,which is furt.er confirmed by t.e broadened EPR *** result.reveals t.at.t.ere is an energy exchange int.ract.on bet.een in sit. formed Br vacancies and CO_(2)molecules,which promot.s t.e format.on of high-energy CO_(2)molecules t. facilit.t. t.e subsequent.reduct.on *** addit.on,t.eoret.cal calculat.ons indicat. t.at.t.e bended CO_(2)adsorpt.on configurat.on on t.e surface of BiOBr wit. Br vacancies caused t.e decrease of t.e lowest.unoccupied molecular orbit.l of t.e CO_(2)molecule,which makes it.easier for CO_(2)molecules t. acquire elect.ons and get.*** sit. diffuse reflect.nce infrared Fourier t.ansform spect.oscopy furt.er shows t.at.t.e act.vat.d CO_(2)molecules are favorably convert.d t. key int.rmediat.s of COOH*,result.ng in a CO generat.on rat. of 9.1μmol g^(-1)h^(-1)and a select.vit. of 100%.t.is st.dy elucidat.s t.e underlying mechanism of CO_(2)act.vat.on at.act.ve sit.s and deepens t.e underst.nding of CO_(2)phot.reduct.on react.on.

关键词： react.on. adsorpt.on act.vat.on

On opt.mal cont.ol at.t.e onset.of a new viral out.reak

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Infect.ous Disease Modelling 2024年第4期9卷 995-1006页

作者： Alexandra Smirnova Xiaojing ye Depart.ent.of Mat.emat.cs&St.t.st.cs Georgia State UniversityAtlantaUSA

We propose a versat.le model wit. a flexible choice of cont.ol for an early-pandemic out.reak prevent.on when vaccine/drug is not.yet.*** t.at.st.ge,cont.ol is oft.n limit.d t. non-medical int.rvent.ons like social dist.ncing and ot.er behavioral *** t.e SIR opt.mal cont.ol problem,we show t.at.t.e running cost.of cont.ol sat.sfying mild,pract.cally just.fied condit.ons generat.s an opt.mal st.at.gy,u(t.,t.[0,t.,t.at.is sust.inable up unt.l some moment.τ∈[0,t..However,for any t.[τ,t.,t.e funct.on u(t.will decline as t.approaches t.which may cause t.e number of newly infect.d people t. ***,t.e window from 0 t. τ is t.e t.me for public healt. officials t. prepare alt.rnat.ve mit.gat.on measures,such as vaccines,t.st.ng,ant.viral medicat.ons,and *** addit.on t. t.eoret.cal st.dy,we develop a fast.and st.ble comput.t.onal met.od for solving t.e proposed opt.mal cont.ol *** efficiency of t.e new met.od is illust.at.d wit. numerical examples of opt.mal cont.ol t.aject.ries for various cost.funct.ons and *** result. provide a comprehensive demonst.at.on of t.e effect. of cont.ol on t.e epidemic spread and mit.gat.on expenses,which can serve as invaluable references for public healt. officials.

关键词： Epidemiology Compart.ent.l model t.ansmission dynamic Opt.mal cont.ol

Recent.progress in t.e development.of dielect.ic elast.mer mat.rials and t.eir mult.layer act.at.rs

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Journal of Zhejiang Universit.-Science A(Applied Physics & Engineering) 2024年第3期25卷 183-205页

作者： Shengchao JIANG Junbo PENG Lvt.ng WANG Hanzhi Ma.ye SHI ZJU-UIUC Inst.t.t. Zhejiang UniversityJiaxing 314400China College of Mechanical Engineering Zhejiang UniversityHangzhou 310058China Depart.ent.of Polymer Science and Engineering Zhejiang UniversityHangzhou 310058China

Dielect.ic elast.mers(DEs)have emerged as one of t.e most.promising art.ficial muscle t.chnologies,due t. t.eir except.onal propert.es such as large act.at.on st.ain,fast.response,high energy densit.,and flexible processibilit. for various *** t.e past.t.o decades,researchers have been working on developing DE mat.rials wit. improved propert.es and exploring innovat.ve applicat.ons of dielect.ic elast.mer act.at.rs(DEAs).t.is review art.cle focuses on t.o main t.pics:recent.mat.rial innovat.on of DEs and development.of mult.layer st.cking processes for DEAs,which are import.nt.t. promot.ng commercializat.on of *** begins by explaining t.e working principle of a ***,recent.y developed st.at.gies for preparing new DE mat.rials are int.oduced,including reducing mechanical st.ffness,increasing dielect.ic permit.ivit.,suppressing viscoelast.cit. loss,and mit.gat.ng elect.omechanical inst.bilit. wit.out.*** t.e next.sect.on,different.mult.layer st.cking met.ods for fabricat.ng mult.layer DEAs are discussed,including convent.onal dry st.cking,wet.st.cking,a novel dry st.cking met.od,and micro-fabricat.on-enabled st.cking *** review provides a comprehensive and up-t.-dat. overview of recent.development. in high-performance DE mat.rials and mult.layer st.cking *** highlight. t.e progress made in t.e field and also discusses pot.nt.al fut.re direct.ons for furt.er advancement..

关键词： Dielect.ic elast.mer act.at.r(DEA) Dielect.ic elast.mer(DE) Mat.rial svnt.esis Mult.laver st.cking met.od

St.ong Ant.ferromagnet.c Exchange-Coupling Observed in Hydride-Bridged Dimeric Dysprosium(Ⅲ)Single-Molecule Magnet

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Chinese Journal of Chemist.y 2024年第4期42卷 391-396页

作者： Qian-Cheng Luo Ke-Xin Yu Peng-Bo Jin ye-ye Liu Yuan-Qi Zhai Yan-Zhen Zheng Front.er Inst.t.t. of Science and t.chnology State Key Laboratory of Electrical Insulation and Power EquipmentXi'an Key Laboratory of Electronic Devices and Materials ChemistrySchool of Chemistry and School of PhysicsXi'an Jiaotong University99 Yanxiang RoadXi'anShaanxi710054 China

One dihydride-bridged dimeric Dy(Ⅲ)guanidinat. complex,formulat.d as[{(Me_(3)Si)_(2)NC(NiPr)_(2)}_(2)Dy(μ-H)]_(2)(1Dy),was successfully isolat.d and t.e int.oduct.on of hydride bridges significant.y reduces t.e int.amolecular Dy(Ⅲ)…Dy(Ⅲ)dist.nce t. only 3.688(1)Å.t. invest.gat. t.e effect.of such a short.Dy(Ⅲ)…Dy(Ⅲ)dist.nce on magnet.sm,we also prepared it. dibromide-bridged analogue[{(Me_(3)Si)_(2)NC(NiPr)_(2)}_(2)Dy(μ-Br)]_(2)(2Dy),which has a much longer Dy(Ⅲ)…Dy(Ⅲ)dist.nce of 4.605(4)Å.Surprisingly,2Dy demonst.at.s much larger effect.ve energy barrier for magnet.zat.on reversal(U_(eff))and higher blocking t.mperat.re(t.(B)).t.e worse performance of 1Dy is at.ribut.d t. t.e concert.d effect.of st.ong ant.ferromagnet.c int.ract.ons bet.een Dy(Ⅲ)ions(J_(t.t.l)=–2.683 cm^(–1))and t.e unparallel arrangement.of magnet.c principle axes of t.e Dy(Ⅲ)ions for 1Dy.

关键词： Single-molecule magnet. Lant.anides Guanidinat. ligand Hydride bridge Magnet.c propert.es Ab init.o calculat.ons

MCDM t.chnique using single-valued neut.osophic t.igonomet.ic weight.d aggregat.on operat.rs

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Journal of Management.Analyt.cs 2024年第1期11卷 45-61页

作者： Jun ye Shigui Du Rui Yong School of Civil and Environment.l Engineering Ningbo UniversityNingboPeople’s Republic of China

Mot.vat.d based on t.e t.igonomet.ic t.norm and t.conorm,t.e aims of t.is art.cle are t. present.t.e t.igonomet.ic t.norm and t.conorm operat.onal laws of SvNNs and t.en t. propose t.e SvNN t.igonomet.ic weight.d average and geomet.ic aggregat.on operat.rs for t.e modelling of a mult.ple crit.ria decision making(MCDM)t.chnique in an inconsist.nt.and indet.rminat. *** realize t.e aims,t.is paper first.proposes t.e t.igonomet.ic t.norm and t.conorm operat.onal laws of SvNNs,which cont.in t.e hybrid operat.ons of t.e t.ngent.and arct.ngent.funct.ons and t.e cot.ngent.and inverse cot.ngent.funct.ons,and present. t.e SvNN t.igonomet.ic weight.d average and geomet.ic operat.rs and t.eir ***,an MCDM t.chnique is proposed in view of t.e present.d t.o aggregat.on operat.rs in t.e circumst.nce of *** t.e end,an act.al case of t.e choice issue of slope t.eat.ent.schemes is provided t. indicat. t.e pract.cabilit. and effect.vit. of t.e proposed MCDM t.chnique.

关键词： Single-valued neut.osophic number t.igonomet.ic t.norm and t.conorm t.igonomet.ic weight.d aggregat.on operat.r decision making