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QCD sum rule study of J^(P)=1^(±)exotic sta.es with two hea.y qua.ks in the molecula. 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.Bilmis m.Sa.cı Depa.tment of Physics Middle East Technical UniversityAnkara06800Turkey tUBIta. ULa.BIm Ankara06510Turkey

In this study,the spectroscopic pa.a.eters of exotic molecula. sta.es composed of mesons conta.ning two hea.y qua.ks(sca.a.-a.ia. a.d pseudosca.a.-a.ia. meson combina.ions)a.e investiga.ed within the QCD sum *** findings revea. tha. molecula. sta.es conta.ning cha.m qua.ks do not form bound sta.es,wherea. sta.es with b-qua.ks ca. form exotic molecula. *** observa.ion ha. significa.t implica.ions for understa.ding the structure of these exotic sta.es.

关键词： QCD sum rules exotic mesons molecula. sta.es

a.a.ysis of strong deca.s of SU(3)pa.tners ofΩ(2012)ba.yon

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Chinese Physics C 2024年第8期48卷 34-41页

作者： t.m.a.iev S.Bilmis m.Sa.ci Depa.tment of Physics Middle East Technical UniversityAnkara 06800Turkey tUBIta. ULa.BIm Ankara 06510Turkey

We estima.e the coupling consta.ts a.d deca. widths of the SU(3)pa.tners of theΩ(2012)hyperon,a. discovered by the BELLE Colla.ora.ion,using the distribution a.plitudes of the octet ba.yons within the light cone sum rules *** study includes a.compa.ison of the obta.ned results for the releva.t deca. widths with those derived within the fra.ework of the fla.or SU(3)*** observe a.good a.reement between the predictions of both ***,our result on the deca. width ofΩ→ΞK is compa.ible with the existing experimenta. result within the uncerta.nties of the model *** results ca. provide helpful insights for determining the na.ure of the SU(3)pa.tners of theΩ(2012)ba.yon.

关键词： coupling consta.ts light cone sum rule hyperon

La.e Ordovicia. ma.s Extinction: Ea.th, fire a.d ice

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Na.iona. Science Review 2024年第1期11卷 51-65页

作者： Da.id a.t.Ha.per Pa.a.oecosystems Group Department of Earth SciencesDurham University

the La.e Ordovicia. ma.s Extinction wa. the ea.liest of the ‘big’ five extinction events a.d the ea.liest to a.fect the tra.ectory of meta.oa. life. two pha.es ha.e been identified nea. the sta.t of the Hirna.tia. period a.d in the middle. It wa. a.ma.sive ta.onomic extinction, a.wea. phylogenetic extinction a.d a.rela.ively benign ecologica. extinction. a.ra.id cooling, triggering a.ma.or ice a.e tha. reduced the tempera.ure of surfa.e wa.ers, prompted a.drop in sea.level of some 100 m a.d introduced toxic bottom wa.ers onto the shelves. these symptoms of more funda.enta. pla.eta.y processes ha.e been a.socia.ed with a.ra.ge of fa.tors with a. underlying driver identified a. volca.icity. Volca.ic eruptions, a.d other products, ma. ha.e extended ba.k in time to a. lea.t the Sa.dbia. a.d ea.ly Ka.ia., suggesting the extinctions were more protra.ted a.d influentia. tha. hitherto documented.

关键词： Ordovicia. LOmE pa.eoecology pa.a.obiogeogra.hy biota.

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美国页岩油气地质特征及勘探开发进展

石油勘探与开发 2024年第4期51卷 807-828页

作者： mCma.ON t P La.SON t E ZHa.G t SHUStER m 美国德克萨斯大学奥斯汀分校杰克逊地质科学学院经济地质局奥斯汀78758-4445德克萨斯州美国

基于美国页岩油气勘探开发历程的回顾,对主要页岩盆地的地质演化、主要页岩层系的油气地质特征及勘探开发进展进行系统梳理和总结。美国重要页岩盆地的富烃页岩主要发育于6个地质时期:中奥陶世、中—晚泥盆世、早石炭世(中—晚密西西比... 详细信息

基于美国页岩油气勘探开发历程的回顾,对主要页岩盆地的地质演化、主要页岩层系的油气地质特征及勘探开发进展进行系统梳理和总结。美国重要页岩盆地的富烃页岩主要发育于6个地质时期:中奥陶世、中—晚泥盆世、早石炭世(中—晚密西西比世)、早二叠世、晚侏罗世和晚白垩世(塞诺曼期—土伦期),构造沉积环境主要包括克拉通内盆地、前陆盆地和被动大陆边缘盆地。古生界富烃页岩主要分布于以下6个盆地:阿巴拉契亚盆地(尤蒂卡页岩和马塞勒斯页岩)、阿纳达科盆地(伍德福德页岩)、威利斯顿盆地(巴肯页岩)、阿卡马盆地(费耶特维尔页岩)、沃思堡盆地(巴内特页岩)和二叠盆地(狼营组和斯帕瑞组/骨泉组页岩)。中生界富烃页岩主要发育在西墨西哥湾盆地(海恩斯维尔组和鹰滩组)和落基山盆地群(以丹佛和粉河盆地的尼尔布拉勒组页岩为主)。通过对各页岩区带的详细分析发现,页岩的岩相和矿物成分存在差异,“页岩储层”并非只是页岩,很多情况下页岩油气还产自粉砂岩和碳酸盐岩等多种岩石类型。美国的页岩油气资源丰富,页岩油地质资源量超过0.246×1012 t,页岩气地质资源量超过290×1012 m3。在开启“页岩革命”的水平井水力压裂技术出现之前,美国经过了长达20年的勘探开发实践和理论技术积累。自2007年至2023年,美国页岩油气产量从约11.2×104t/d油当量增加到超过300.0×104t/d油当量,2017年页岩油气产量超过了常规油气,2023年在油气总产量中的占比增加到60%以上。页岩油气的开发主要得益于钻完井技术的改进,“立体开发”的攻关,以及重复压裂、提高原油采收率和“U”形井等技术的应用。基于美国丰富的页岩资源基础和技术的不断进步,页岩油气的产量将继续为全美的油气生产做出更大贡献。

关键词：美国页岩油页岩气页岩储层非常规储层油气产量资源评价

a.rodyna.ics of a.ta.dem-Bla.ed a.ia. Compressor Rotor under Circumferentia. Distortion a. Different Rota.iona. Speeds

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Journa. of therma. Science 2024年第4期33卷 1340-1356页

作者： a.it KUma. Jerry t.JOHN a.m.PRa.EEP R.a.Da.KERma.S Dra.a. KOZULOVIC Depa.tment of a.rospa.e Engineering Indian Institute of Technology BombayMumbai400076India Depa.tment of a.tomotive a.d a.rona.tica. Engineering Hamburg University of Applied Sciences20099HamburgGermany Institute of Jet Propulsion Bundeswehr University Munich85577NeubibergGermany

For most a.rcra.t engines,inflow distortion is *** distortion is known to degra.e the a.rodyna.ic performa.ce a.d sta.le opera.ing limits of a.*** rotor configura.ion is a. a.ra.gement tha. effectively controls the growth of the bounda.y la.er over the suction surfa.e of the ***,a.higher tota. pressure rise ca. be a.hieved through this unconventiona. design a.proa.h involving the splitting of the bla.e into forwa.d a.d a.t *** is expected tha. the effect of inlet flow distortion would be more severe for a.ta.dem-rotor design due to the grea.er flow turning inherent in such ***,this a.pect needs to be thoroughly *** present study discusses the effect of circumferentia. distortion on the ta.dem-rotor a. different rota.iona. ***-a.nulus Ra.S simula.ions using a.SYS CFX a.e used in the present *** performa.ce of the rotor a. a.pa.ticula. flow coefficient a.d different rota.iona. speeds is *** tota. pressure a.d efficiency a.e observed to drop a. lower ma.s flow ra.es under the influence of circumferentia. *** loss region in ea.h bla.e pa.sa.e is ma.nly a.socia.ed with the bla.e wa.e,tip lea.a.e vortex,seconda.y flow,a.d bounda.y ***,their contribution va.ies from pa.sa.e to pa.sa.e,pa.ticula.ly in the distorted *** the lower spa.,the wa.e width is found to be higher tha. tha. a. a.higher *** to the redistribution of the ma.s flow,the circumferentia. extent reduces a. a.higher *** the undistorted sector,the strength of the tip lea.a.e vortex is significa.tly higher a. the design rota.iona. speed tha. a. lower *** distortion nea. the tip region promotes a. ea.ly vortex brea.down even a. the design opera.ing *** a.versely a.fects the tota. pressure,efficiency,a.d sta.l *** clea. flow conditions,this phenomenon is only observed nea. the sta.l *** the design opera.ing condition,the brea.down of the forwa.d rotor tip l

关键词： ta.dem rotor circumferentia. distortion loss tip lea.a.e vortex vortex brea.down diffusion fa.tor a.rodyna.ics of compressor bla.e

tensile deforma.ion of fine-gra.ned mg a. 4K,78K a.d 298K

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Journa. of ma.nesium a.d a.loys 2024年第6期12卷 2534-2556页

作者： m.Wa.a. a.Kula.P.Noga.t.toka.ski G.Cios m.Niewcza. a.H University of Kra.ow Faculty of Non-Ferrous MetalsKrakowPoland a.H University of Kra.ow Academic Centre for Materials and NanotechnologyKrakowPoland ma.eria.s Science a.d Engineering McMaster UniversityHamiltonCanada

the impa.t of gra.n size, ra.ging from 0.9 μm to 9 μm, on the mecha.ica. properties of commercia.ly pure mg is investiga.ed a. tempera.ures of 4K, 78K, a.d 298K. the mecha.isms governing pla.tic flow a.e influenced by both gra.n size a.d tempera.ure. a. 4K a.d 78K, domina.t deforma.ion modes in mg involve disloca.ion glide a.d extension twinning, rega.dless of gra.n size. the intera.tions between ba.a. a.d non-ba.a. disloca.ions a.d disloca.ions with gra.n bounda.ies promote a. unusua.ly high ra.e of work ha.dening in the pla.tic regime, lea.ing to prema.ure fa.lure. the yield stress follows the Ha.l-Petch rela.ionship σy~ k/√d, with the slope k increa.ing with decrea.ing tempera.ure. a. 298K, in a.dition to disloca.ion glide a.d twinning, gra.n bounda.y sliding(GBS) becomes significa.t in sa.ples with gra.n sizes below 3 μm, considera.ly enha.cing the ma.eria.'s deforma.ility. GBS a.tiva.ion provides a. a.ditiona. recovery mecha.ism for disloca.ions a.cumula.ing a. gra.n bounda.ies, fa.ilita.ing their a.sorption during sliding a.d rota.ion. a.a.ysis of σ Θ rela.ionship suggests tha. the ba.a. slip is the domina.t disloca.ion mode in mg a. 298K. Decrea.ing gra.n size suppresses disloca.ion a.tivity a.d twinning a.d increa.es GBS, resulting in lower Θ a.d σ Θ va.ues. Suppressing conventiona. deforma.ion modes coupled with enha.ced GBS yields stress softening, brea.ing down the Ha.l-Petch rela.ionship in mg below 3 μm gra.n size, lea.ing to a. inverse Ha.l-Petch beha.iour. the work reports new da.a.on the strength, ductility, work ha.dening a.d fra.ture beha.iour, a.d their va.ia.ions with mg gra.n size a.ross different tempera.ure regimes.

关键词： Polycrysta.line mg mecha.ica. properties Deforma.ion mecha.isms Work-ha.dening texture evolution Cryogenic tempera.ures Ha.l-Petch rela.ionship

Supposition of gra.hene sta.ks to estima.e the conta.t resista.ce a.d conductivity of na.ocomposites

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a.plied ma.hema.ics a.d mecha.ics(English Edition) 2024年第4期45卷 663-676页

作者： Y.Za.E m.t.mUNIR G.J.WENG K.Y.RHEE Bioma.eria.s a.d tissue Engineering Resea.ch Group Department of Interdisciplinary TechnologiesBreast Cancer Research CenterMotamed Cancer InstituteTehran ***Iran College of Engineering a.d technology American University of the Middle EastEgaila 54200Kuwait Depa.tment of mecha.ica. a.d a.rospa.e Engineering Rutgers UniversityNew BrunswickNJ 08903U.S.A. Depa.tment of mecha.ica. Engineering(BK21 Four) College of EngineeringKyung Hee UniversityYongin 446701Republic of Korea

In this study,the effects of sta.ked na.osheets a.d the surrounding interpha.e zone on the resista.ce of the conta.t region between na.osheets a.d the tunneling conductivity of sa.ples a.e eva.ua.ed with developed equa.ions superior to those previously *** conta.t resista.ce a.d na.ocomposite conductivity a.e modeled by severa. influencing fa.tors,including sta.k properties,interpha.e depth,tunneling size,a.d conta.t *** developed model's a.cura.y is verified through numerous experimenta. *** further va.ida.e the models a.d esta.lish correla.ions between pa.a.eters,the effects of a.l the va.ia.les on conta.t resista.ce a.d na.ocomposite conductivity a.e ***,the conta.t resista.ce is prima.ily dependent on the polymer tunnel resistivity,conta.t a.ea.a.d tunneling *** dimensions of the gra.hene na.osheets significa.tly influence the conductivity,which ra.ges from 0 S/m to90 S/*** increa.ed number of na.osheets in sta.ks a.d a.la.ger ga. between them enha.ce the na.ocomposite's ***,the thicker interpha.e a.d sma.ler tunneling size ca. lea. to higher sa.ple conductivity due to their optimistic effects on the percola.ion threshold a.d network effica.y.

关键词： gra.hene polymer composite sta.ked na.osheet tunneling conductivity conta.t resista.ce interpha.e

Sea.ch for production of da.k fermion ca.dida.es in a.socia.ion with hea.y neutra. ga.ge boson deca.ing to dimuon in proton-proton collisions a.√s=8 teV using CmS open da.a

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Chinese Physics C 2024年第4期48卷 6-13页

作者： Y.ma.moud H.a.da.la. m.t.Hussein S.Elga.ma. Centre for theoretica. physics The British University in EgyptEgypt Physics Depa.tment Faculty of ScienceCairo UniversityEgypt

In this study,we conducted a.sea.ch for da.k ma.ter using a.pa.t of the da.a.recorded by the CmS experiment during run-I of the LHC in 2012 with a.center of ma.s energy of 8 teV a.d a. integra.ed luminosity of 11.6 fb−*** da.a.were ga.hered from the CmS open *** ma.ter,in the fra.ework of the simplified model(mono-Z′),ca. be produced from proton-proton collisions in a.socia.ion with a.new hypothetica. ga.ge boson,Z′.thus,the sea.ch wa. conducted in the dimuon plus la.ge missing tra.sverse momentum *** benchma.k scena.io of mono-Z′,which is known a. light vector,wa. used for interpreting the CmS open *** evidence of da.k ma.ter wa. observed,a.d exclusion limits were set on the ma.ses of da.k ma.ter a.d Z′a. 95%confidence level.

关键词： da.k ma.ter la.ge ha.ron collider CmS open da.a sea.ch for new physics da.k fermion

Clinica. va.ida.ion of the ea.ly embryo via.ility a.sessment system: a.a.ysis for the bla.tocyst morphology a.d pregna.cy outcomes

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a.ia. pa.ific Journa. of Reproduction 2024年第5期13卷 219-227页

作者： Vu D Hop a. m Cuong Phi t t a.h Nguyen t L Huong Le Hoa.g Nguyen V Ha.h a.sisted Reproductive technology Centre Tam Anh General HospitalHanoiVietnam Institute of Biotechnology Vietnam Academy of Science and TechnologyHanoiVietnam

Objective:to determine the rela.ionship between the ea.ly embryo via.ility a.sessment(EEVa.a.d bla.tocyst morphologica. pa.a.eters a.d pregna.cy ***:this retrospective cohort study wa. conducted on 291 intra.ytopla.mic sperm injection cycles including 2522 embryos with indica.ions of prolonging embryo culture to the bla.tocyst sta.e in the Genea.embryo review incuba.or,a.d 511 single vitrified-wa.med bla.tocyst tra.sfer cycles from Ja.ua.y 2020 to June *** EEVa.system produced a. EEVa.score from E1(best)to E5(worse)for the potentia. of bla.tocyst *** morphology wa. *** a.socia.ion between the EEVa.score a.d ea.h type of bla.tocyst morphology,impla.ta.ion ra.e,clinica. pregna.cy,a.d ongoing pregna.cy were a.sessed using genera.ized estima.ing ***:the inner cell ma.s a.ICm a.,trophectoderm a.tE a.,bla.tocoele expa.sion degree of 3,4,5,6,7 ra.es were higher with lower the EEVa.*** a.justed odd ra.io(a.R)(E5 vs E1)wa. 0.3 for ICm a.0.174 for tE a.a.d 0.210 for BL3,4,5,6,7(a.l Pting a.significa.t a.socia.ion between lower EEVa.scores a.d improved embryo *** impla.ta.ion,clinica. pregna.cy,a.d ongoing pregna.cy ra.e were a.so higher with lower the EEVa.*** a.R of E5 vs E1 wa. 0.245 for impla.ta.ion,0.185 for clinica. pregna.cy a.d 0.200 for ongoing pregna.cy ra.e(Pthere were a.socia.ions between bla.tocyst morphology,pregna.cy outcome a.d EEVa.*** good bla.tocyst morphology a.d pregna.cy outcomes a.e higher with lower the EEVa.score.

关键词： a.toma.ed embryo a.sessment Bla.tocyst Ea.ly embryo via.ility a.sessment Genea.embryo review incuba.or