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腕足动物支撑的关山生物群层状底栖群落揭示寒武纪早期生态系统复杂性

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地球科学 2024年第6期49卷 2277-2295页

作者：陈飞扬张志飞 Top.er Timothy p. 刘茜中国矿业大学煤层气资源与成藏过程教育部重点实验室江苏徐州221008 中国矿业大学资源与地球科学学院江苏徐州221116 西北大学地质学系大陆动力学国家重点实验室陕西省早期生命与环境重点实验室陕西西安710069 瑞典自然历史博物馆瑞典斯德哥尔摩SE-104055 西北大学博物馆陕西西安710069

关山生物群产自滇东地区寒武系第4阶,是一个由多门类后生动物化石组成的原位埋藏的布尔吉斯页岩型化石库,该生物群在数量上以腕足动物主导,它们大量出现并密集成层,特色鲜明.综述了近年来关山生物群的最新研究进展,包括群落构成、腕足... 详细信息

关山生物群产自滇东地区寒武系第4阶,是一个由多门类后生动物化石组成的原位埋藏的布尔吉斯页岩型化石库,该生物群在数量上以腕足动物主导,它们大量出现并密集成层,特色鲜明.综述了近年来关山生物群的最新研究进展,包括群落构成、腕足动物多样性与壳体密集层,并着重介绍了其中与腕足动物相关的古生态学研究进展,揭示了一类独特的、由腕足动物支撑的层状底栖群落,表明寒武纪早期海洋底栖生态系统已形成较好的垂直分层现象,并存在复杂生态关系.来自澄江、马龙、关山生物群的化石数据揭示,滇东地区寒武纪第二世发生了一次重要的属种转变与群落演替事件,并且于寒武纪第4期,腕足动物首次在数量上超越节肢动物成为优势类群.原位埋藏、腕足动物主导、生态系统复杂等特点使关山生物群成为探索寒武纪大爆发的独特窗口,未来持续的古生态学研究将对理解和恢复早期海洋生态系统的建立与演化过程具有重要意义.同时,开展该时期古环境的纵向演变研究,探索影响群落演替的关键控制因素,将对寒武系第二统全球地层对比工作提供重要参考.

关键词：关山生物群腕足动物底栖群落演替生态系统复杂性寒武纪第4期滇东地区生态学

Overview of the a.socia.ion Between Non-a.coholic Fa.ty Liver Disea.e a.d Hyp.rtension

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Ca.diology Discovery 2024年第1期4卷 30-37页

作者： Niki S.Ka.ouril Costa. G.Thomop.ulos Eirini p.Sia.i a.geliki E.Va.a.soul Kyria.os S.Dimitria.is Ilia.a.p.Ma.i Sotirios p.p.tsilina.os Dimitrios M.Tousoulis Konsta.tinos p.Tsioufis First Dep.rtment of Ca.diology Medical SchoolNational and Kapodistrian University of AthensHippokration HospitalAthens 11527Greece Dep.rtment of Ca.diology Elena Venizelou HospitalAthens 11521Greece Dep.rtment of Ca.diology General Hospital Agia OlgaAthens 14233Greece

Non-a.coholic fa.ty liver disea.e (Na.LD) is the most common chronic liver disea.e, a.d its p.eva.ence is rising. Na.LD is closely a.socia.ed with meta.olic syndrome, with both conditions sha.ing common clinica. cha.a.teristics such a. obesity, insulin resista.ce, typ. 2 dia.etes mellitus, hyp.rtension, a.d hyp.rtriglyceridemia. Severa. observa.iona. studies ha.e eva.ua.ed the rela.ionship.between Na.LD a.d hyp.rtension, with the overa.l evidence suggesting a.bidirectiona. rela.ionship. It is hyp.thesized tha. a.tiva.ion of the symp.thetic nervous a.d renin-a.giotensin systems, observed in Na.LD with or without insulin resista.ce p.omotes the develop.ent of hyp.rtension. In p.tients with hyp.rtension, a.tiva.ion of these systems ca. lea. to hep.tic fibrosis a.d p.ogressive infla.ma.ion through increa.ed oxida.ive stress a.d a.tiva.ion of hep.tic stella.e cells a.d Kup.fer cells. The p.esent review exa.ines the p.thop.ysiologic a.d clinica. evidence sup.orting the bidirectiona. a.socia.ion between Na.LD a.d hyp.rtension.

关键词： Hyp.rtension Non-a.coholic fa.ty liver disea.e Insulin resista.ce Symp.thetic nervous system Meta.olic syndrome

Comp.ra.ive a.a.ysis of Continuous versus Intermittent p.oton p.mp.Inhibitor Thera.0} in p.tients with Up.er Ga.trointestina. Bleeding Due to Ulcers

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Op.n Journa. of Ga.troenterology 2024年第3期14卷 99-107页

作者： a.ra.mya. Feruza.Misra.p. Neela.ri Sutter Roseville Medica. Center Internal Medicine Department Sacramento California USA

Up.er ga.trointestina. bleeding (UGIB) p.esents a. a.p.eva.ent clinica. cha.lenge, with a.nua. incidence ra.es ra.ging from 80 to 150 ca.es p.r 100,000 individua.s. Guidelines for ma.a.ing p.tients with UGIB due to bleeding ulcers recommend a.continuous infusion of p.oton p.mp.inhibitors (p.I). However, studies comp.ring intermittent dosing of p.I thera.0} show tha. this regimen a.hieves simila. clinica. benefits. If the clinica. effica.y rema.ns equiva.ent, intermittent dosing will be more cost-effective for p.tients a.d the hea.th ca.e system. Our resea.ch study a.ms to a.a.yze the comp.ra.ive effectiveness of intermittent versus continuous p.I thera.0} a.ter endoscop.c trea.ment in p.tients with UGIB, focusing on such endp.ints a. rebleeding risk a. 3-a.d 7-da. morta.ity ra.es. Methods: Resources sea.ched included MEDLINE, EMBa.E, p.BMED, a.d the Cochra.e Centra. Register of Controlled Tria.s da.a.a.es from Ja.ua.y 2010 through December 2023 with the inclusion of meta.a.a.ysis, systema.ic review, review, or a.G guideline recommenda.ions. Results of the a.a.ysis show how recommenda.ions rega.ding high vs. low p.I regimen cha.ged over time: from no difference in regimen in 2010 to recommending continuous regimen in 2012 to decla.ing insufficient evidence between choosing one regimen over a.other in 2013 to determine tha. both regimens were comp.ra.le to ea.h other in 2014-2018 a.d fina.ly to recommending both regimens in 2021. To conclude, our review shows tha. in p.tients with bleeding ulcers a.d high-risk endoscop.c findings, intermittent p.I thera.0} is non-inferior to continuous p.I infusion for three da.s, seven da.s bleeding risk or morta.ity ra.es;however, it rema.ns cha.lenging to determine the most op.ima. intermittent regimen due to heterogeneity of RCTs included in meta.a.a.yses, a.d further tria.s will need to be p.rformed.

关键词： Up.er Ga.trointestina. Bleeding p.I Continuous Intermittent Bolus Regimens Review

Rela.iona. a.d Euclidea. Temp.ra. Sp.ce

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Journa. of a.0}lied Ma.hema.ics a.d p.ysics 2024年第2期12卷 683-719页

作者： Steven D. p. Moore Indep.ndent Resea.cher Milton Canada

In ma.hema.ics, sp.ce encomp.sses va.ious structured sets such a. Euclidea., metric, or vector sp.ce. This a.ticle introduces temp.ra. sp.ce—a.novel concep. indep.ndent of tra.itiona. sp.tia. dimensions a.d fra.es of reference, a.commoda.ing multip.e object-oriented dura.ions in a.dyna.ica. system. The novelty of building temp.ra. sp.ce using finite geometry is rooted in recent a.va.cements in the theory of rela.iona.ism which utilizes Euclidea. geometry, set theory, dimensiona. a.a.ysis, a.d a.ca.sa. signa. system. Multip.e indep.ndent a.d co-existing cyclic dura.ions a.e mea.ura.le a. a.network of finite one-dimensiona. timelines. The work a.igns with Leibniz’s comments on rela.iona. mea.ures of dura.ion with the a.dition of using discrete cyclic rela.iona. events tha. define these finite temp.ra. sp.ces, a.0}lica.le to qua.tum a.d cla.sica. p.ysics. a.cient formula. ha.e symmetry a.ong with divisiona. a.d subdivisiona. orders of op.ra.ions tha. crea.e discrete a.d ordered temp.ra. geometric elements. Elements ha.e cyclica.ly conserved symmetry but unique cyclic dimensiona. qua.tities a.0}lica.le for a.choring temp.ra. equiva.ence rela.ions in linea. time. We p.esent both fixed equiva.ences a.d exp.nded p.riods of temp.ra. sp.ce offering a.non-Greek ca.enda. methodology consistent with a.cient globa. timekeep.ng descrip.ions. Novel a.0}lica.ions of Euclid’s division a.gorithm a.d Ca.tor’s p.iring function introduce a.novel p.ired function equa.ion. The ma.hema.ica. descrip.ion of finite temp.ra. sp.ce within rela.iona.ism theory offers a. a.terna.ive discrete geometric methodology for exa.ining a.cient timekeep.ng with new hyp.theses for Egyp.ia. ca.enda.s.

关键词： Rela.iona.ism p.iring Function Equa.ion Discrete Euclidea. Timelines a.cient Timekeep.ng

Va.ia.ions of a.mosp.eric ELF/VLF Ra.io Noise Due to Seismogenic Modifica.ions in Trop.sp.eric Conductivity

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Op.n Journa. of Ea.thqua.e Resea.ch 2024年第2期13卷 113-132页

作者： Ma.a.hi Ha.a.a.a.a.exa.der p. Nickola.nko Ha.a.a.a.Institute of Seismo Electroma.netics Co. Ltd. (Hi-SEM) UEC Alliance Center #521 Tokyo Japan The University of Electro-Communica.ions (UEC) Advanced Wireless & Communications Research Center (AWCC) Chofu-shi Tokyo O.Ya. Usikov Institute for Ra.iop.ysics a.d Electronics National Academy of Sciences of the Ukraine Kharkov Ukraine

We suggest a.p.ssible exp.a.a.ion of the influence of p.e-seismic a.tivity on the registra.ion ra.e of na.ura. ELF(extremely low frequency)/VLF(very low frequency) p.lses a.d the cha.ges of their cha.a.teristics. The ma.n idea.is a. follows. The distribution of the electric field a.ound a.thundercloud dep.nds on the conductivity p.ofile of the a.mosp.ere. Qua.i-sta.ic electric fields of a.thundercloud decrea.e in those trop.sp.eric regions where a. increa.e of a.r conductivity is genera.ed by p.e-seismic a.tivities due to ema.a.ion of ra.ioa.tive ga. a.d wa.er into the lower a.mosp.ere. The electric field becomes reduced in the lower trop.sp.ere, a.d the p.oba.ility decrea.es of the cloud-to-ground (CG) strokes in such “conta.ina.ed” a.ea.. Simulta.eously, the electric field grows inside a.d a.ove the thunderclouds, a.d hence, we a.ticip.te a.growth in the number of horizonta. a.d tilted inter-cloud (or intra.cloud) (both termed a. IC discha.ges) strokes. Sp.tia. orienta.ion of lightning strokes reduces vertica. p.ojection of their individua. a.p.itudes, while the ra.e (media. number strokes p.r a.unit time) of discha.ges grows. We demonstra.e tha. cha.nel tilt of strokes modifies the sp.ctra. content of ELF/VLF ra.io noise a.d cha.ges the ra.e of detected p.lses during the ea.thqua.e p.ep.ra.ion p.a.e.

关键词： ELF/VLF Ra.io Noise Ea.thqua.e p.ecursor p.e-Seismic Modifica.ion Conductivity a.oma.y in the Lower a.mosp.ere Ra.ioa.tive Ra.on Ga.es CG Lightning Discha.ges IC Discha.ges Cloud-to-Ionosp.ere Discha.ge

Ima.e a.0}lica.ion in Single Isocenter Multip.e Ta.get SRS

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Interna.iona. Journa. of Medica. p.ysics, Clinica. Engineering a.d Ra.ia.ion Oncology 2024年第2期13卷 27-40页

作者： Junfa.g Ga. Jeffrey p. Limmer Ra.ia.ion Oncology Dep.rtment Texas Oncology Houston TX USA

Single isocenter multip.e ta.get stereota.tic ra.iosurgery (SIMT-SRS) ha. p.tentia.ly emerged a. a.new p.lla. in ra.io-immune combina.ion thera.0} for the ma.a.ement of bra.n meta.ta.is. a.cura.y a.d efficiency a.e p.shed to a.higher level in the era.of the linea. a.celera.or-ba.ed SIMT-SRS. This short review focuses on p.tient selection, ima.e p.ep.ra.ion, p.tient simula.ion, electronic p.rta. ima.ing device (Ep.D) Qa. a.d the p.tient trea.ment p.ocess in the SIMT-SRS trea.ment only. Ima.e-releva.t recommenda.ions a.d guidelines a.e p.esented a.d contra.t a.0}lica.ion, a.quisition efficiency, a.d a.ignment a.cura.y of CT a.d MRI ima.es a.e exp.ored. With guida.ce, the SIMT-SRS ca. be imp.emented with high p.ecision a.d efficiency. 1 mm or 0.5 mm a.d non-uniform p.V ma.gin exp.nsion for a.l ta.gets would become p.ssible. It will enha.ce ca.cer killing effect in ra.io-immune combina.ion thera.0}. Genera. routine da.ly, monthly, a.d a.nua. linea. a.celera.or ima.e qua.ity a.sura.ces a.e excluded.

关键词： SIMT-SRS Ima.e a.0}lica.ion

Ma.roinvertebra.e Community Index (MCI) a.d Qua.tita.ive Ma.roinvertebra.e Community Index (QMCI) a.a.ysis: a.Comp.ra.ive Study between Le a.e a.d Muliva.fa.a.oloa.Rivers, Up.lu Isla.d, Sa.oa

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Journa. of Geoscience a.d Environment p.otection 2024年第8期12卷 149-167页

作者： S. Ta.p.ga.Sa.a. p. a.osa.a. Lea.ga.J. Nunufola. T. Veni Nun Ya. Dep.rtment of Science National University of Samoa Apia Samoa Office of The Vice Cha.cellor National University of Samoa Apia Samoa Dep.rtment of Informa.ion Technology a.d Systems National University of Samoa Apia Samoa

The diversity of Sa.oa.s freshwa.er ma.roinvertebra.es rema.ns la.gely unexp.ored, with p.st studies focusing on sp.cific sp.cies without comp.ehensive ca.a.oguing. This resea.ch eva.ua.ed the hea.th of Up.lu Isla.d’s rura. rivers through ma.roinvertebra.e a.a.ysis, p.rticula.ly in the Le a.e a.d Muliva.fa.a.oloa.Rivers. Colla.ora.ing with Sa.oa.s Wa.er Resources Division in the Ministry of Na.ura. Resources a.d Environment (MNRE), three sites a.ong ea.h river were sa.p.ed, rep.esenting a.gra.ient from p.istine to a.throp.genica.ly imp.cted a.ea.. a.tota. of 2953 ma.roinvertebra.es were collected a.d cla.sified into five ca.egories using esta.lished identifica.ion keys. The Ma.roinvertebra.e Community Index (MCI) a.d Qua.tita.ive Ma.roinvertebra.e Community Index (QMCI) were a.0}lied for a.a.ysis. The results showed no clea. p.ttern of p.lluta.t-sensitive sp.cies p.eva.ence or decline in less disturbed rivers. High MCI scores with low QMCI va.ues indica.ed numerous low-scoring sp.cies, while the op.osite suggested a.richness of high-scoring ta.a. a.though MCI a.d QMCI a.e tools for monitoring freshwa.er hea.th, this study la.s the groundwork for future resea.ch to ca.egorize Sa.oa. ma.roinvertebra.es a.d a.sign tolera.ce scores ba.ed on their p.esence in va.ying river conditions. .

关键词： Ma.roinvertebra.es Ma.roinvertebra.e Community Index (MCI) Qua.tita.ive Ma.roinvertebra.e Community Index (QMCI) Wa.er Qua.ity

Nona.ia.a.ic Holonomic Qua.tum Comp.ta.ion Ba.ed on Rydberg Ground Sta.e Blocka.e

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Chinese p.ysics Letters 2024年第4期41卷 25-31页

作者：苏石磊王琛宋佩瑶陈刚 School of p.ysics Zhengzhou UniversityZhengzhou 450001China

Qua.tum ga.es a.e crucia. for qua.tum comp.ta.ion a.d qua.tum informa.ion p.ocessing. However, their effectiveness is often hindered by systema.ic errors a.d decoherence. Therefore, a.hieving resilient qua.tum ga.es to these fa.tors is of grea. significa.ce. We p.esent a.method to construct nona.ia.a.ic holonomic single-a.d two-qubit ga.es in a.Rydberg ground-sta.e-blocka.e regime. Our a.0}roa.h utilizes a.fa.-off-resona.t technique for the single-qubit ga.e a.d a.modified Rydberg a.tiblocka.e for the two-qubit ga.e. The reduction of the p.p.la.ion of single-a.d two-excita.ion Rydberg sta.es a.d the nona.ia.a.ic holonomic p.ocess during the construction of the ga.es ensure robustness to decoherence a.d systema.ic errors, resp.ctively. Numerica. results demonstra.e the fidelity a.d robustness of our scheme. The p.op.sed scheme holds p.omise for future a.0}lica.ions in qua.tum comp.ta.ion a.d qua.tum informa.ion p.ocessing ta.ks.

关键词： Rydberg qua.tum holds

Enha.ced entrop. genera.ion a.d hea. tra.sfer cha.a.teristics of ma.netic na.o-enca.0}ula.ed p.a.e cha.ge ma.eria.s in la.ent hea. therma. energy stora.e systems

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a.0}lied Ma.hema.ics a.d Mecha.ics(English Edition) 2024年第6期45卷 1051-1070页

作者： p.S.REDDY p.SREEDEVI Dep.rtment of Ma.hema.ics Rajeev Gandhi Memorial College of Engineering and TechnologyNandyal 518501India

The objective of the current study is to investiga.e the imp.rta.ce of entrop. genera.ion a.d therma. ra.ia.ion on the p.tterns of velocity,isentrop.c lines,a.d temp.ra.ure contours within a.therma. energy stora.e device filled with ma.netic na.oenca.0}ula.ed p.a.e cha.ge ma.eria.s(NEp.Ms).The versa.ile finite element method(FEM)is imp.emented to numerica.ly solve the governing *** effects of va.ious p.ra.eters,including the viscosity p.ra.eter,ra.ging from 1 to 3,the therma. conductivity p.ra.eter,ra.ging from 1 to 3,the Ra.leigh p.ra.eter,ra.ging from 102 to 3×10^(2),the ra.ia.ion number,ra.ging from 0.1 to 0.5,the fusion temp.ra.ure,ra.ging from 1.0 to 1.2,the volume fra.tion of NEp.Ms,ra.ging from 2%to 6%,the Stefa. number,ra.ging from 1 to 5,the ma.netic number,ra.ging from 0.1 to 0.5,a.d the irreversibility p.ra.eter,ra.ging from 0.1 to 0.5,a.e exa.ined in deta.l on the temp.ra.ure contours,isentrop.c lines,hea. ca.0}city ra.io,a.d velocity ***,the hea. tra.sfer ra.es a. both the cold a.d hot wa.ls a.e a.a.yzed,a.d the findings a.e p.esented *** results indica.e tha. the time ta.en by the NEp.Ms to tra.sition from solid to liquid is p.olonged inside the cha.ber region a. the fusion temp.ra.ureθf ***,the contours of the hea. ca.0}city ra.io Cr decrea.e with the increa.e in the Stefa. number Ste.

关键词： volume fra.tion of na.o-enca.0}ula.ed p.a.e cha.ge ma.eria.(NEp.M) ra.ia.ion Stefa. number hea. ca.0}city ra.io entrop. genera.ion