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Spin-glass behavior in t.e compet.ng CoCrGaO_(4)cubic spinel syst.m

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Nano Research 2025年第1期18卷 501-507页

作者： Jiyu Hu Jiangli ni Zhenfa Zi Chaocheng Liu School of Physics and Mat.rials Engineering Hefei Normal UniversityHefei 230009China Nat.onal Synchrot.on Radiat.on Laborat.ry University of Science and Technology of ChinaHefei 230026China

Spin glasses(SGs),generally defined as disordered syst.ms wit. randomized compet.ng int.ract.ons,are widely invest.gat.d complex *** t.e ground st.t.s of spin glasses is crucial for underst.nding t.e nat.re of disordered magnet. and many ot.er physical manifest.t.ons,while also helping t. solve some hard combinat.rial opt.mizat.on problems across mult.ple ***,t.e int.insic cause of SG has always been elusive,especially in spinel oxide ***,we report.t.e SG behavior observed in t.e cubic spinel oxides CoCrGaO_(4),and provide a comprehensive underst.nding of it. int.insic *** result. indicat. a frust.at.d st.t. under mult.-magnet.c compet.t.on,and t.e feat.res of SG are confirmed by suscept.bilit. *** fit.ing paramet.rs ofτ0,t.,and zv of isot.ermal remanent.magnet.zat.on furt.er reveal t.e relaxat.on behavior and st.ong spin ***,t.e varying exchange coupling under different.t.mperat.res and magnet.c fields is unveiled,which should be responsible for t.e disordered *** st.dies unravel t.e underlying mechanism responsible for doping-induced magnet.c frust.at.on and int.oduce CoCrGaO_(4)as a pot.nt.al plat.orm for invest.gat.ng spin glass behavior,t.ereby advancing fundament.l research on frust.at.d magnet.sm wit.in t.e spinel syst.m.

关键词： spin glass(SG) magnet.c frust.at.on magnet.c compet.t.on spinel ferrit.s

[Det.rminat.on of eight.pht.alat. met.bolit.s in urine of pregnant.women and evaluat.on of neonat.l birt. out.omes based on solid-phase ext.act.on-high performance liquid chromat.graphy-t.ndem mass spect.omet.y]

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Se pu = Chinese journal of chromat.graphy 2025年第1期43卷 60-67页

作者： Zi-Hao Wang Meng-Fei Xu Bei-ni Li Ping Wu Wei Wu Hubei Universit. of Chinese Medicine Wuhan 430065 China.

Pht.alat.s (PAEs) are endocrine-disrupt.ng chemicals t.at.are widely present.in everyday life and ent.r t.e human body t.rough various pat.ways. t.e release of PAEs int. t.e environment.t.rough pat.ways t.at.include leaching, evaporat.on, abrasion, and t.e use of personal care product. exposes humans t. PAEs via ingest.on, inhalat.on, and dermal absorpt.on. Pregnant.women, as a part.cularly vulnerable populat.on, risk adverse newborn growt. and development.when exposed t. PAEs. While t.e concent.at.ons of PAEs in urine reflect.recent.exposure levels in humans, urinary levels of pht.alat. met.bolit.s (mPAEs) are commonly used as biomarkers of int.rnal exposure owing t. t.e relat.vely short.biological half-lives of PAEs (t.is st.dy, we developed a solid-phase ext.act.on-high performance liquid chromat.graphy-t.ndem mass spect.omet.y (SPE-HPLC-MS/MS) met.od for simult.neously det.ct.ng eight.mPAEs in t.e urine of pregnant.women. Urine samples were enzymat.cally hydrolyzed wit. -glucosidase and t.en purified using t.e Bond Elut.Plexa SPE column, wit. subsequent.elut.on, concent.at.on, and redissolved performed prior t. HPLC-MS/MS. Separat.on was achieved using an Agilent.Eclipse Plus C18 column (100 mm×3 mm, 3.5 μm), wit. gradient.elut.on performed using 0.1% acet.c acid aqueous solut.on and 0.1% acet.c acid acet.nit.ile as mobile phases. Mult.ple react.on monit.ring (MRM) mode was used for det.ct.on, wit. quant.ficat.on performed using t.e int.rnal-st.ndard met.od. Good linearit.es were obt.ined in t.e range of 0.1-200 ng/mL for t.e eight.mPAEs, wit. limit. of det.ct.on (LODs) and quant.ficat.on (LOQs) of 0.015-0.048 and 0.050-0.160 ng/mL, respect.vely. t.e eight.mPAEs exhibit.d recoveries of 80.2%-99.7% at.t.ree spiked levels (1, 10, and 50 ng/mL). t.is met.od was subsequent.y used t. analyze t.e eight.mPAEs levels in urine samples of 497 pregnant.women from t.e Ezhou Mat.rnit. and Child Healt. Care Hospit.l. t.e part.cipant. exhibit.d widespread exposure t

关键词： birt. out.omes high performance liquid chromat.graphy-t.ndem mass spect.omet.y (HPLC-MS/MS) pht.alat. met.bolit.s (mPAEs) urine samples of pregnant.women

Rapid eart.quake focal mechanism inversion using high-rat. GPS velomet.rs in sparse net.ork

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Science China Eart. Sciences 2015年第11期58卷 1970-1981,1页

作者： GUO AiZhi ni SiDao CHEN WeiWen Jeffrey t.FREYMUELLER SHEN ZhiChao St.t. Key Laborat.ry of Geodesy and Eart.'s Dynamics Institute of Geodesy and Geophysics Chinese Academy of Sciences School of Eart. and Space Sciences University of Science and Technology of China Geophysical Inst.t.t. University of Alaska Fairbanks

In t.is st.dy, we demonst.at. an approach for invert.ng eart.quake source paramet.rs based on high-rat. global posit.oning syst.m （GPS） velocit. seismograms. t.e velocit. records obt.ined from single-st.t.on GPS velocit. solut.ons wit. broadcast.ephemeris are used direct.y for eart.quake source paramet.r inversion using t.e Cut.and Past. met.od, wit.out.requiring conversion of t.e velocit. records int. displacement.records. t.king t.e E1 Mayor-Cucapah eart.quake as an example, GPS velocit. records from 10 st.t.ons wit. reasonable azimut.al coverage provide eart.quake source paramet.rs very close t. t.ose from t.e Global cent.oid moment.t.nsor （Global CMt. solut.on. In sparse net.ork t.st., robust.source paramet.rs wit. accept.ble bias can be achieved wit. as few as t.ree st.t.ons. When t.e number of st.t.ons is reduced t. t.o, t.e bias in rake angle becomes appreciable, but.t.e magnit.de and st.ike est.mat.ons are st.ll robust. t.e result. of t.is st.dy demonst.at. t.at.rapid and reliable est.mat.on of eart.quake source paramet.rs can be obt.ined from GPS velocit. dat.. t.ese paramet.rs could be used for early eart.quake warning and shake map const.uct.on, because such GPS velocit. records can be obt.ined in real t.me.

关键词： high-rat. GPS velomet.r GPS velocit. det.rminat.on CAP met.od eart.quake source paramet.rs sparse net.ork

A Charact.rizat.on of t.(2g+1,2) among Alt.rnat.ng Knot.

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Act. Mat.emat.ca Sinica,English Series 2021年第12期37卷 1841-1846页

作者： Yi ni Depart.ent.of Mat.emat.cs CaltechMC 253-371200 E California BlvdPasadenaCA 91125USA

Let.K be a genus g alt.rnat.ng knot.wit. Alexander polynomial Δ_(K)(t.=Σ_(i=-g)^(g)a_(i)t.(i).We show t.at.if |a_(g)|=|a_(g-1)|,t.en K is t.e t.rus knot.t.(2g+1,±2).t.is is a special case of t.e Fox t.apezoidal ***... 详细信息

关键词： Alt.rnat.ng knot. Alexander polynomial st.ongly quasiposit.ve fibered knot.

Oil charging hist.ry and pat.ways of t.e Ordovician carbonat. reservoir in t.e t.oput.i region,t.rim Basin,NW China

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Pet.oleum Science 2017年第4期14卷 662-675页

作者： Rong-Hui Fang Mei-Jun Li Hai-t.o Lü t.-G.Wang Yuan Yuan Yong-Li Liu Zhi-Yong ni St.t. Key Laborat.ry of Pet.oleum Resources and Prospect.ng College of GeosciencesChina University of PetroleumBeijing 102249China Explorat.on and Development.Research Inst.t.t. Northwest Oilfield Branch CorporationSINOPECUrumqi 830011XinjiangChina Research Inst.t.t. of Shaanxi Yanchang Pet.oleum(Group)Co.Lt. Xi'an 710075ShaanxiChina

Geochemical analysis of 64 oils sampled from an Ordovician carbonat. reservoir in t.e t.oput.i region was undert.ken t. st.dy t.e composit.on of molecular markers. All t.e oils have similar geochemical charact.rist.cs and belong t. a single oil family. t.ey are presumed t. derive from t.e same source kit.hen and have similar oil charging hist.ry. A hist.gram of homogenizat.on t.mperat.res(t.) of aqueous inclusions in reservoir rocks shows a bimodal dist.ibut.on pat.ern, indicat.ng t.at.t.e Ordovician reservoir has been charged t.ice. Coupling t.e measured t.(°C) wit. t.e burial and geot.ermal hist.ries reconst.uct.d using 1D basin modeling, we relat. t.e homogenizat.on t.mperat.re t. t.e relevant.geological ages: i.e.,425–412 and 9–4 Ma, corresponding t. t.e Middle t. Lat. Silurian and t.e Miocene t. Pliocene, respect.vely. t.e oil filling orient.t.on and pat.ways are t.aced using molecular indicat.rs relat.d t. alkyldibenzot.iophenes and benzo[b]napht.ot.iophenes. t.e oil charging orient.t.on is from sout. t. nort. generally. It.can be predict.d t.at.t.e Ordovician reservoirs were sourced from a kit.hen locat.d t. t.e sout. of t.e t.oput.i region, most.probably bet.een t.e Awat. and Manjiaer Depressions. t.aps locat.d in t.e sout.ern side of t.e t.oput.i region, along t.e oil charging pat.ways, should t.erefore be preferred oil explorat.on t.rget..

关键词： Oil populat.on Oil charging event. Fluid inclusion 1D numerical modeling Oil filling pat.way

Experiment.l isot.ermal sect.on phase diagram of Ho-Fe-In at.773 K and magnet.c propert.es of Ho_(12)Fe_(2.08)In_(2.92) alloy

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Rare Met.ls 2021年第4期40卷 987-994页

作者： Xiang Chen Chao ni t.e College of Physics and Elect.onic Informat.on Engineering Neijiang Normal UniversityNeijiang 641002China t.e Ames Laborat.ry U.S.Department of EnergyIowa State UniversityAmesIA 50011-3020USA

t.e isot.ermal sect.on of t.e Ho-Fe-In syst.m at.773 K has been const.uct.d by X-ray powder *** known st.uct.re t.rnary compound Er_(12)Fe_(2) In_(3)-t.pe Ho_(12)Fe_(2) In_(3) has been *** t.e same t.me,solid solut.ons are not.det.ct.d in Ho-Fe-In syst.m at.773 *** magnet.c t.ansit.on and magnet.caloric effect.of Ho_(12)Fe_(2.08)In_(2.92) alloy wit. Er_(12)Fe_(2) In_(3)-t.pe st.uct.re were invest.gat.d by magnet.c suscept.bilit. and isot.ermal magnet.zat.on *** normal ant.ferromagnet.c-paramagnet.c t.ansit.on and anot.er abnormal one are discovered at.18 and 76 K in ground st.t.,*** t. a first.order field-induced met.magnet.c t.ansit.on(ant.ferromagnet.c-ferromagnet.c) at.below t.e Neel t.mperat.re of 18 K),t.e negat.ve ent.opy changes are observed at.corresponding *** is only a second-order ferromagnet.c-paramagnet.c t.ansit.on near Curie t.mperat.re(t.),t.e maximum ent.opy change(Δ_(Smax)) values are-6.14 J·kg^(-1)·K^(-1) at.3 K and 7.88 J·kg^(-1)·K^(-1) at.28 K in a field range of 0-7 *** reversible relat.ve cooling power corresponding t. negat.ve ent.opy change can reach about.600 J·kg^(-1) in an wide operat.ng t.mperat.re region Δ_(t.ycl)=74 K from 16 t.90 K,which suggest. t.at.Ho_(12)Fe_(2.08)In_(2.92) could be a pot.nt.al mat.rial for magnet.c refrigerat.on in t.e corresponding t.mperat.re range.

关键词： Re_(3(x+y))(t.)_(x)X_(y)phase Met.magnet.c t.ansit.on Magnet.t.ermal propert.es Ho-Fe-In alloy

Dehydrat.on at.subduct.on zones and t.e geochemist.y of slab fluids

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Science China Eart. Sciences 2020年第12期63卷 1925-1937页

作者： Wancai Li Huaiwei ni CAS Key Laborat.ry of Crust.Mant.e Mat.rials and Environment. School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei230026China CAS Cent.r for Excellence in Comparat.ve Planet.logy Hefei230026China

Subduct.ng oceanic slabs undergo met.morphic dehydrat.on wit. t.e increase of t.mperat.re and pressure during *** is an essent.al st.p for element.recycling,and slab fluids are crit.cal agent. for mediat.ng slab-mant.e *** is mainly cont.olled by t.e t.ermal st.uct.re of subduct.on zones and t.e st.bilit. of hydrous *** fore-arc dept.s,slab dehydrat.on produces aqueous fluid wit. dissolved salt. such as *** subduct.on proceeds deeper,t.e cont.nt.of silicat. component. *** sub-arc and post.arc dept.s,a hydrous silicat. melt.is likely t. form,or a supercrit.cal fluid could arise from complet. miscibilit. bet.een silicat.s and H_(2)*** part.t.oning of element. bet.een slab fluid and t.e residual solid rock is cont.olled by t.e t.pe of fluid,and generally it.is t.e supercrit.cal fluid t.at.is t.e most.capable of mobilizing t.ace element.,being an effect.ve carrier even for high field st.engt. *** t.e chemist.y of slab fluids relies on sophist.cat.d int.grat.on of experiment.,t.eoret.cal comput.t.on and invest.gat.on of nat.ral rock *** cont.ibut.on focuses on t.e cont.nt.and speciat.on of key volat.les,including carbon,nit.ogen and sulfur,in slab fluids as well as import.nt.fluid propert.es such as oxygen fugacit. and *** propert.es of slab fluids show complicat.d variat.on under t.e cont.ol of mineral assemblages and t.P *** fluids at.great.dept.s of subduct.ons have been inferred t. be modest.y alkaline and not.necessarily very oxidizing as oft.n *** progress in t.e research of slab dehydrat.on and t.e chemist.y and propert.es of slab fluids demands urgent.y t.e development.of innovat.ve experiment.l and comput.t.onal t.chnology including in sit. analyt.cal met.ods at.high t.P.

关键词： Subduct.on zone Dehydrat.on Slab fluids Volat.les Oxygen fugacit. Acidit.

Ult.aviolet.humic-like component.cont.ibut.s t. riverine dissolved organic mat.er biodegradat.on

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Journal of Environment.l Sciences 2023年第2期124卷 165-175页

作者： Maofei ni Siyue Li College of Eco-Environment.l Engineering Guizhou Minzu UniversityGuiyang 550025China Research Cent.r for Environment.l Ecology and Engineering School of Environmental Ecology and Biological EngineeringWuhan Institute of TechnologyWuhan 430205China t.e karst.environment.l geological hazard prevent.on laborat.ry of Guizhou Minzu Universit. Guiyang 550025China Key Laborat.ry of Reservoir Aquat.c Environment Research Center for EcohydrologyChongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China

Biological degradat.on of dissolved organic mat.er(DOM)regulat.s it. st.uct.re and fat. in river *** views suggest.d t.at.labile component. were dominant.y consumed by microbial *** we provide new observat.ons t.at.a part.of recalcit.ant.compounds largely cont.ibut. t. riverine DOM *** excit.t.onemission mat.ix fluorescent.spect.oscopy combined wit. peak picking and parallel fact.r analysis are used t. explore component.variabilit. during DOM ***-like and t.ypt.phan-like DOM are t.e primary component. of riverine DOM,wit. proport.on cont.ibut.ons of 39%–82% and 16%–61% for % of t.e maximumfluorescence int.nsit.,*** 56 days of aerobic incubat.on in t.e dark,large amount. of t.rosine-like DOM generat.on are *** t.mperat.re enhances t.e decomposit.on of ult.aviolet.humiclike subst.nce and furt.er st.mulat.s labile DOM bio-mineralizat.on int. carbon ***,averaged proport.ons of amino acid composit.ons(peak B and t.markedly increase(pt.e humic-like composit.ons(peak A,M and C)decrease aft.r DOM incubat.on,suggest.ng incomplet. degradat.on of refract.ry DOM from high-molecular t. low-molecular weight.*** findings support.t.e new not.on of t.e cont.nuous DOM biodegradat.on in a mode as“st.ps by st.ps”,cont.ibut.ng t. a new underst.nding of carbon cycling for t.e UN Sust.inable Development.Goal.

关键词： Dissolved organic mat.er(DOM) Sequent.al biodegradat.on Recalcit.ant.compounds Component.and fat. Fluorescence analysis

Bioinformat.cs Analysis on lncRNA and mRNA Expression Profiles for Novel Biological Feat.res of Valvular Heart.Disease wit. At.ial Fibrillat.on

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Journal of Elect.onic Science and t.chnology 2021年第1期19卷 53-69页

作者： Wei Zeng ni-ni Rao Ke Liu t.e School of Life Science and t.chnology University of Electronic Science and Technology of ChinaChengdu 610054 t.e Guangdong Inst.t.t. of Elect.onic Informat.on Engineering University of Electronic Science and Technology of ChinaDongguan 523107 t.e Depart.ent.of Sichuan Academy of Medical Science Sichuan Provincial People’s HospitalChengdu 610072

t.e biological feat.res of t.e valvular heart.disease wit. at.ial fibrillat.on(AF-VHD)remain unknown when involving long non-coding RNAs(lncRNAs).t.is st.dy performed syst.m analysis on lncRNA and messenger RNA(mRNA)expression profiles const.uct.d by using bioinformat.cs met.ods and t.ols for biological feat.res of *** change and t.t.st.were used t. ident.fy different.ally expressed(DE)lncRNAs and *** enrichment.analysis of DE mRNAs was *** subgroups formed by lncRNAs and nearby mRNAs were screened,and a t.anscript.onal regulat.on net.ork among lncRNAs,mRNAs,and t.anscript.on fact.rs(t.s)was *** int.ract.ons bet.een mRNAs relat.d t. lncRNAs and drugs were *** 620 AF-VHDrelat.d DE lncRNAs and 452 DE mRNAs were *** 3 lncRNA subgroups were *** 665 regulat.ons mediat.d by lncRNAs and t.s were *** 9 mRNAs relat.d t. lncRNAs had 1 or more pot.nt.al drug int.ract.ons,t.t.ling 37 *** t.ese,9 drugs t.rget.ng 3 genes are already known t. be able t. cont.ol or t.igger at.ial fibrillat.on(AF)or ot.er cardiac *** found biological feat.res of AF-VHD provide foundat.ons for furt.er biological experiment. t. bet.er underst.nd t.e roles of lncRNAs in development.from t.e valvular heart.disease(VHD)t. AF-VHD.

关键词： Expression profiles long non-coding RNA(lncRNA) messenger RNA(mRNA) valvular heart.disease(VHD) valvular heart.disease wit. at.ial fibrillat.on(AF-VHD).