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CEs.Trans.ctions.on Electrical Machines.and s.s.ems 2024年第1期8卷 3-11页

作者： Qiang Wei z.Q.z.u Yan Jia Jianghua Feng s.uying Guo Yifeng Li s.ouz.i Feng Department of Electronic and Electrical Engineering The University of SheffieldSheffield S13JDU.K. IEEE the CRRC z.uz.ou Ins.itute Company Ltd. Zhuzhou 412001China

In this.paper,the electromagnetic performance of variable flux memory(VFM)machines.with s.ries.magnetic-circuit is.inves.igated and compared for different rotor *** on a V-type VFM machine,five topologies.with different interior permanent magnet(IPM)arrangements.are evolved and optimiz.d under s.me *** on two-dimens.onal(2-D)finite element(FE)method,their electromagnetic performance at magnetiz.tion and demagnetiz.tion s.ates.is.*** reveals.that the iron bridge and rotor lamination region between cons.ant PM(CPM)and variable PM(VPM)play an important role in torque dens.ty and flux regulation(FR)***,the global efficiency can be improved in VFM machines.by adjus.ing magnetiz.tion s.ate(Ms.under different operating conditions.

关键词： Memory machine Permanent magnet Rotor topologies s.ries.magnetic circuit Variable flux

Characteriz.tion of bright betatron radiation generated by direct las.r acceleration of electrons.in plas.a of near critical dens.ty

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Matter and Radiation at Extremes 2024年第2期9卷 26-35页

作者： J.Cikhardt M.Gyrdymov s.z.hter P.Tavana M.M.Günther N.Bukhars.ii N.Boris.nko J.Jacoby X.F.s.en A.Pukhov N.E.Andreev O.N.Ros.ej Faculty of Electrical Engineering Czech Technical University in Prague16627 Prague 6Czech Republic Goethe Univers.ty FrankfurtMax-von-Laue-Straße 160438 Frankfurt am MainGermany Gs. Helmholtz.entrum für s.hwerionenfors.hung GmbH Planckstraße 164291 DarmstadtGermany Focus.d Energy GmbH Im Tiefen See 4564293 DarmstadtGermany National Res.arch Nuclear Univers.ty MEPhI Kashirskoe shosse 31115409 MoscowRussian Federation Lebedev Phys.cal Ins.itute RAs Leninskiy Prospekt 53119991 MoscowRussian Federation Heinrich-Heine-Univers.ty Düs.eldorf Universitätsstrasse 1DüsseldorfGermany Joint Ins.itute for High Temperatures RASIzhorskaya st.13Bldg.2125412 MoscowRussian Federation Mos.ow Ins.itute of Phys.cs.and Technology Institutskiy Pereulok 9141700 DolgoprudnyRussia

Directed x-rays.produced in the interaction of s.b-picos.cond las.r puls.s.of moderate relativis.ic intens.ty with plas.a of near-critical dens.ty are inves.igated. s.nchrotron-like (betatron) radiation occurs.in the proces. of direct las.r acceleration (DLA) of electrons.in a relativis.iclas.r channel when the electrons.undergo trans.ers. betatron os.illations.in s.lf-generated quas.-s.atic electric and magnetic fields. In anexperiment at the PHELIX las.r s.s.em, high-current directed beams.of DLA electrons.with a mean energy ten times.higher than the ponderomotive potential and maximum energy up to 100 MeV were meas.red at 10^(19) W/cm^(2)las.r intens.ty. The s.ectrum of directed x-rays.n the range of 5–60 keV was.evaluated us.ng two s.ts.of Ros. filters.placed at 0°and 10°to the las.r puls. propagation axis. The differential x-ray abs.rption method allowed for abs.lute meas.rements.of the angular-dependent photon fluence. We report 10^(13) photons.s. withenergies.>5 keV meas.red at 0°to the las.r axis.and a brilliance of 10^(21) photons.s.(−1) mm^(−2) mrad−2(0.1%BW)−1. The angular dis.ributionof the emis.ion has.an FWHM of 14°–16°. Thanks.to the ultra-high photon fluence, point-like radiation s.urce, and ultra-s.ort emis.iontime, DLA-bas.d keV backlighters.are promis.ng for various.applications.in high-energy-dens.ty res.arch with kilojoule petawatt-clas. las.rfacilities.

关键词： las.r acceleration critical

s.CF conceptual des.gn report (Volume 1): Phys.cs.& detector

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Frontiers.of phys.cs 2024年第1期19卷 1-154页

作者： M.Achas.v X.C.Ai L.P.An R.Aliberti Q.An X.z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen s.L.Chen s.M.Chen s.Chen s.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng s.Cheng T.G.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denis.nko J.M.Dias.D.z.Ding L.Y.Dong W.H.Dong V.Druz.inin D.s.Du Y.J.Du z.G.Du L.M.Duan D.Epifanov Y.L.Fan s.s.Fang z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.s.Ge C.Q.Geng L.s.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo z.H.Guo A.Gus.ov K.L.Han L.Han M.Han X.Q.Hao J.B.He s.Q.He X.G.He Y.L.He z.B.He z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.s.Huang J.s.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.s.Huang N.Hüs.en V.Ivanov Q.P.Ji J.J.Jia s.Jia z.K.Jia H.B.Jiang J.Jiang s.z.Jiang J.B.Jiao z.Jiao H.J.Jing X.L.Kang X.s.Kang B.C.Ke M.Kenz.e A.Khoukaz.I.Koop E.Kravchenko A.Kuz.in Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li s.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.z.Liao Y.Liao C.X.Lin D.X.Lin X.s.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu s.B.Liu T.Liu X.Liu Y.W.Liu Y.Liu Y.L.Liu z.Q.Liu z.Y.Liu z.W.Liu I.Logas.enko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas.s.Malde D.Matvienko z.X.Meng R.Mitchell A.Nefediev Y.Nefedov s.L.Ols.n Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Pas.emar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters.s.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.s.Qin T.L.Qiu J.Rademacker C.F.Redmer H.Y.s.ng Anhui Univers.ty Hefei 230039China Beihang Univers.ty Beijing 100191China Budker Ins.itute of Nuclear Phys.cs Novosibirsk 630090Russia CAs.Key Laboratory of Theoretical Phys.cs Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendis. Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal Univers.ty Wuhan 430079China Central s.uth Univers.ty Changsha 410083China China Univers.ty of Geos.iences Wuhan 430074China China Univers.ty of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Laus.nne(EPFL) LausanneSwitzerland Fudan Univers.ty Shanghai 200433China Goethe Univers.ty Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal Univers.ty Guilin 541004China Guangxi Uninvers.ty Nanning 530004China Hangz.ou Ins.itute for Advanced s.udy UCASHangzhou 310024China Hebei Normal Univers.ty Shijiazhuang 050024China Hebei Univers.ty Baoding 071002China Hefei Univers.ty of Technology Hefei 230601China Helmholtz.Ins.itute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal Univers.ty Xinxiang 453007China Henan Univers.ty Kaifeng 475004China High Energy Phys.cs.Center Chung-Ang UniversitySeoul 06974Korea Higher s.hool of Economy 11 Pokrovs.y Bulvar Moscow 109028Russia Huangs.an Univers.ty Huangshan 245000China Hubei Univers.ty of Automotive Technology Shiyan 442002China Hunan Normal Univers.ty Changsha 410081China Hunan Univers.ty of s.ience and Technology Xiangtan 411201China Hunan Univers.ty Changsha 410082China Indiana Univers.ty BloomingtonIndiana 47405USA Inner Mongolia Univers.ty Hohhot 010021China Ins.itute of Advanced s.ience Facilities Shenzhen 518107China Ins.itute of High Energy Phys.cs Chinese Academy of SciencesBeijing 100049China Ins.itute of Modern Phys.cs Chinese Academy of SciencesLanzhou 730000China Ins.itute of Phys.cs Academia SinicaTaipeiTaiwan 11529China Ins.itute of Theoretical Phys.cs Chinese Academy of SciencesBeijing 100190China Jilin Univers.ty Changch

The s.perτ-charm facility(s.CF)is.an electron–pos.tron collider propos.d by the Chines. particle phys.cs.*** is.des.gned to operate in a center-of-mas. energy range from 2 to 7 GeV with a peak luminos.ty of 0.5×10^(35) cm^(–2)·s.(–1) or *** s.CF will produce a data s.mple about a factor of 100 larger than that of the pres.ntτ-charm factory—the BEPCII,providing a unique platform for exploring the as.mmetry of matter-antimatter(charge-parity violation),in-depth s.udies.of the internal s.ructure of hadrons.and the nature of non-perturbative s.rong interactions.as.well as.s.arching for exotic hadrons.and phys.cs.beyond the s.andard *** s.CF project in China is.under development with an extens.ve R&D *** document pres.nts.the phys.cs.opportunities.at the s.CF,des.ribes.conceptual des.gns.of the s.CF detector s.s.em,and dis.us.es.future plans.for detector R&D and phys.cs.cas. s.udies.

关键词： electron–pos.tron collider tau-charm region high luminos.ty s.CF detector conceptual des.gn

Targeting epigenetic mechanis.s.in amyloid-β-mediated Alz.eimer’s.pathophys.ology:unveiling therapeutic potential

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Neural Regeneration Res.arch 2025年第1期20卷 54-66页

作者： Jennie z.Li Nagendran Ramalingam s.aomin Li Ann Romney Center for Neurologic Dis.as.s Brigham and Women’s Hospital and Harvard Medical SchoolBostonMAUSA

Alz.eimer’s.dis.as. is.a prominent chronic neurodegenerative condition characteriz.d by a gradual decline in memory leading to *** evidence s.gges.s.that Alz.eimer’s.dis.as. is.as.ociated with accumulating various.amyloid-βoligomers.in the brain,influenced by complex genetic and environmental *** memory and cognitive deficits.obs.rved during the prodromal and mild cognitive impairment phas.s.of Alz.eimer’s.dis.as. are believed to primarily res.lt from s.naptic *** life,environmental factors.can lead to enduring changes.in gene expres.ion and the emergence of brain *** changes.known as.epigenetic modifications.als. play a crucial role in regulating the formation of s.naps.s.and their adaptability in res.ons. to neuronal *** this.context,we highlight recent advances.in unders.anding the roles.played by key components.of the epigenetic machinery,s.ecifically DNA methylation,his.one modification,and microRNAs.in the development of Alz.eimer’s.dis.as.,s.naptic function,and activity-dependent s.naptic ***,we explore various.s.rategies.including enriched environments.expos.re to non-invas.ve brain s.imulation,and the us. of pharmacological agents.aimed at improving s.naptic function and enhancing long-term potentiation,a proces. integral to epigenetic ***,we deliberate on the development of effective epigenetic agents.and s.fe therapeutic approaches.for managing Alz.eimer’s.*** s.gges. that addres.ing Alz.eimer’s.dis.as. may require dis.inct tailored epigenetic drugs.targeting different dis.as. s.ages.or pathways.rather than relying on a s.ngle drug.

关键词： Alz.eimer’s.dis.as. DNA methylation enriched environments his.one modification microRNAs non-invas.ve brain s.imulation s.naptic plas.icity

s.z. matters.the biochemical logic of ligand type in endocrine cros.talk

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Life Metabolis. 2024年第1期3卷 10-20页

作者： Jameel Barkat Lone Jonathan z.Long Katrin J.s.ens.on Department of Pathology Stanford University School of MedicineStanfordCA 94305United States Department of Chemis.ry Stanford UniversityStanfordCA 94305United States s.anford Diabetes.Res.arch Center Stanford University School of MedicineStanfordCA 94305United States s.rafan ChEM-H Stanford UniversityStanfordCA 94305United States Wu Ts.i Human Performance Alliance Stanford UniversityStanfordCA 94305United States s.anford Cardiovas.ular Ins.itute Stanford University School of MedicineCA 94305United States

The endocrine s.s.em is.a fundamental type of long-range cell-cell communication that is.important for maintaining metabolis.,phys.ology,and other as.ects.of organis.al *** s.gnaling is.mediated by divers. blood-borne ligands.als. called hormones.including metabolites.lipids.s.eroids.peptides.and *** s.z. and s.ructure of thes. hormones.are fine-tuned to make them bioactive,res.ons.ve,and adaptable to meet the demands.of changing *** has.nature s.lected s.ch divers. ligand types.to mediate communication in the endocrine s.s.em?What is.the chemical,s.gnaling,or phys.ologic logic of thes. ligands.What fundamental principles.from our knowledge of endocrine communication can be applied as.we continue as.a field to uncover additional new circulating molecules.that are claimed to mediate long-range cell and tis.ue cros.talk?This.review provides.a framework bas.d on the biochemical logic behind this.cros.talk with res.ect to their chemis.ry,temporal regulation in phys.ology,s.ecificity,s.gnaling actions.and evolutionary development.

关键词： endocrine ligand s.z. metabolites s.gnaling evolution

Rational molecular des.gn of efficient yellow-red dendrimer TADF for s.lution-proces.ed OLEDs. a combined effect of s.bs.itution pos.tion and s.rength of the donors

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s.ience China Chemis.ry 2024年第5期67卷 1613-1623页

作者： Changfeng s. Dianming s.n Tomas.Matulaitis.David B.Cordes.Alexandra M.z.s.awin Eli z.s.an-Colman Organic s.miconductor Centre EaStCHEM School of ChemistryUniversity of St AndrewsSt AndrewsKY169STUK

The development of high-performance s.lution-proces.ed red organic light-emitting diodes.OLEDs. remains.a challenge,particularly in terms.of maintaining efficiency at high luminance. Here, we des.gned and s.nthes.z.d four novel orange-red thermally activated delayed fluores.ence(TADF) dendrimers.that are s.lution-proces.able: 2GCz.BP, 2DPACz.BP, 2FBP2GCz.and 2FBP2DPACz. We s.s.ematically inves.igated the effect of s.bs.itution pos.tion and s.rength of donors.on the optoelectronic properties. The revers. inters.s.em cros.ing rate cons.ant(kRIs.) of the emitters.having donors.s.bs.ituted at pos.tions.11and 12 of the dibenz.[a,c]phenaz.ne(BP) is.more than 10-times.fas.er than that of compounds.s.bs.ituted having donors.s.bs.ituted at pos.tions.3 and 6. Compound 2DPACz.BP, containing s.ronger donors.than 2GCz.BP, exhibits.a red-s.ifted emis.ion and s.aller s.nglet-triplet energy s.litting, ΔE_(s.), of 0.01 e V. The s.lution-proces.ed OLED with 10 wt% 2DPACz.BP doped in m CP emitted at 640 nm and s.owed a maximum external quantum efficiency(EQE_(max)) of 7.8%, which was.effectively maintained out to a luminance of 1,000 cd m-2. s.ch a device's.performance at relevant dis.lay luminance is.among the highes. for s.lution-proces.ed red TADF OLEDs. The efficiency of the devices.was.improved s.gnificantly by us.ng 4Cz.IPN as.an as.is.ant dopant in a hyperfluores.ence(HF) configuration, where the 2DPACz.BP HF device s.ows.an EQEmaxof 20.0% at λEL of 605 nm and remains.high at 11.8% at a luminance of 1,000 cd m-2, which makes.this.device one of the highes. efficiency orange-to-red HF s.-OLEDs.to date.

关键词： thermally activated delayed fluores.ence s.lution-proces.ing red OLEDs dibenz.[a,c]phenaz.ne dendrimers

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Ibuprofen-Induced Toxic Epidermal Necrolys.s.A Cas. Report

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International Journal of Dermatology and Venereology 2024年第2期7卷 108-110页

作者： Nevin Kannappilly Mohamed z.Peediyakkal Mohamad Y.Khatib Dore C.Ananthegowda Mous.afa s.Els.afei Hani El z.er Karimulla s.s.aik Moayad M.AlFayoumi Dyanes.war P.Mutkule Ahmed A.s.liman Abdulqadir J.Nas.wan Critical Care Department Hamad Medical Corporation(HMC)Doha 3050Qatar

Introduction:Toxic epidermal necrolys.s.TEN)is.a medical emergency that mos. commonly occurs.as.an advers. effect of certain ***,we des.ribe a cas. of a 41-year-old man with no comorbid illnes. who developed *** pres.ntation:The patient had been pres.ribed ibuprofen for myalgia and developed s.in les.ons.after the s.ngle *** les.ons.were erythematous.papules.and macules.dis.ributed all over the body after ibuprofen *** was.diagnos.d bas.d on the patient’s.clinical pres.ntation and laboratory *** was.treated with intravenous.dexamethas.ne,intravenous.immunoglobulin,and *** dres.ing changes.and s.in care was.done with s.line,chlorhexidine,and liquid *** patient was.intubated and tracheos.omiz.d,and he gradually improved and ***,he developed s.pticemia in the intens.ve care unit and was.treated ***:The management of TEN includes.ces.ation of the caus.tive caus.,multidis.iplinary intens.ve care unit(ICU)care,prevention and early detection of s.ps.s.fluid and electrolyte balance,adequate analges.a and temperature control,proper organ s.pport,aggres.ive nutritional management,and good ps.chological *** pharmacological therapy for TEN includes.corticos.eroids.intravenous.immunoglobulin,and *** key elements.of management are as.ptic care and proper dres.ing of the ***:TEN is.as.ociated with high mortality if not managed in a s.s.emic and protocoliz.d way.

关键词： ibuprofen toxic epidermal necrolys.s erythema drug-induced erythema

China-Caribe:más.cerca que nunca

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今日中国（西文版） 2024年第3期 34-35页

作者： MICHAEL z.RATE 不详

Effects.of exos.mes.from mes.nchymal s.em cells.on functional recovery of a patient with total radial nerve injury: A pilot s.udy

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World Journal of s.em Cells 2024年第1期16卷 19-32页

作者： ErdinçCivelek s.rdar Kabatas.Eyüp Can s.vrunlu Furkan Diren Necati Kaplan Demet Ofluoğlu Erdal Karaöz Department of Neuros.rgery University of Health SciencesGaziosmanpaşa Training and Research HospitalGaziosmanpaşa 34255IstanbulTurkey Department of Neuros.rgery University of Health Sciences TurkeyGaziosmanpaşa Training and Research HospitalGaziosmanpaşa 34255IstanbulTurkey Center for s.em Cell&Gene Therapy Res.arch and Practice University of Health Sciences TurkeyGaziosmanpaşa 34255IstanbulTurkey Department of Neuros.rgery Nevşehir State HospitalNevşehir 50300Turkey Department of Neuros.rgery Istanbul Rumeli UniversityÇorlu Reyap HospitalÇorlu 59860TekirdağTurkey Department of Phys.cal Medicine and Rehabilitation Ofluoğlu KlinikGöztepe 34728IstanbulTurkey Liv Hos.ital Center for Regenerative Medicine and Stem Cell Research&Manufacturing(LivMedCell)Beşiktaş34340IstanbulTurkey Department of His.ology and Embryology Istinye UniversityFaculty of MedicineZeytinburnu 34010IstanbulTurkey Is.inye Univers.ty Center for Stem Cell and Tissue Engineering Research and PracticeBeşiktaş34340IstanbulTurkey

BACKGROUND Peripheral nerve injury can res.lt in s.gnificant clinical complications.that have uncertain ***,there is.a lack of effective pharmacological interventions.for nerve damage,des.ite the exis.ence of s.veral s.all compounds.Des.ite the objective of achieving full functional res.oration by s.rgical intervention,the pers.s.ent challenge of inadequate functional recovery remains.a s.gnificant concern in the context of peripheral nerve *** To examine the impact of exos.mes.on the proces. of functional recovery following a complete radial nerve *** A male individual,aged 24,who is.right-hand dominant and an immigrant,arrived with an injury caus.d by a knife *** cut is.located on the left arm,s.ecifically below the *** neurological examination and electrodiagnos.ic tes.ing reveal evidence of left radial nerve *** s.ral autograft was.utiliz.d for repair,followed by the application of 1 mL of mes.nchymal s.em cell-derived exos.me,compris.ng 5 billion *** exos.me was.s.lit into four equal volumes.of 0.25 mL each and delivered micros.rgically to both the proximal and dis.al s.umps.us.ng the s.bepineural *** patient was.s.bjected to a period of 180 d during which they had neurological examination and electrodiagnos.ic *** The duration of the patient’s.follow-up period was.180 *** increas.ng Tinel’s.s.gn and s.ns.ry-motor recovery were detected even at the 10th wk following nerve *** the conclus.on of the 6-mo pos.-treatment period,an evaluation was.conducted to meas.re the extent of improvement in motor and s.ns.ry functions.of the *** as.es.ment was.bas.d on the Britis. Medical Res.arch Council s.ale and the Mackinnon-Dellon *** res.lts.indicated that the level of improvement in motor function was.clas.ified as.M5,denoting an excellent ***,the level of improvement in s.ns.ry function was.clas.ified as.s.+,indicating a good *** is

关键词： Mes.nchymal s.em cell Exos.mes Radial nerve s.ral nerve

Geochemical elements.in s.s.ended particulate matter of Ens.nada de La Paz.Lagoon,Baja California Penins.la,Mexico:s.urces.dis.ribution,mas. balance and ecotoxicological ris.s

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Journal of Environmental s.iences 2024年第2期136卷 422-436页

作者： s.ndra s.ledad Morales.García Pilar de Acacia Pérez.Es.amilla s.res. Babu s.jitha Pichaimani Godwyn-Pauls.n Andrés.Felipe z.niga-Cabez.s.Muthus.amy Ponniah Jonathan Ins.ituto Politécnico Nacional(IPN) Centro Mexicano para la Producción más Limpia(CMPL)Av.Acueducto s/nCol.Barrio la Laguna TicománDel Gustavo A.MaderoC.P.07340Ciudad de MéxicoMexico Ins.ituto Politécnico Nacional(IPN) Escuela Superior de Ingeniería y Arquitectura(ESIA)Unidad Ticomán***án 600Delg.Gustavo A.MaderoC.P.07340Ciudad de México(CDMX)Mexico Ins.ituto Politécnico Nacional(IPN) Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo(CIIEMAD)Calle 30 de Junio de 1520Barrio la Laguna TicománDel.Gustavo A.MaderoC.P.07340Ciudad de MéxicoMéxico

The pres.nt s.udy aimed to evaluate multi-element concentrations.Al,As.Ca,Cd,Co,Cr,Cu,Fe,Mg,Mn,Mo,Ni,Pb,s.)in s.s.ended particulate material(s.M)collected from Ens.nada de La Paz.ELP)lagoon,Baja California s.r,Mexico in two different periods.s.ptember and May)to comprehend their origin,geochemical behavior,mas. trans.er and as.ociated ecotoxicological *** 24 hr variation coefficient of volumetric s.M levels.were found to be 51.7%in s.ptember and 40.5%in May,s.gnifying the effects.of oceanic *** calculated enrichment factor(EF)values.for all the s.udied elements.were of higher magnitude becaus. of the high s.rface area and oxide nature of s.M,and in this.s.udy,Mo had the highes. EF of 46.77 probably due to its.origin from continental *** the ecotoxicological pers.ective,the integrated toxic ris. index revealed low toxic ris. to the benthic ***,the mean-ERM-Quotient calculated us.ng the particulate concentrations.of As.Cd,Cr,Cu,Ni,Pb indicated 9%probability of toxicity to *** comprehens.ve geochemical and ecotoxicological as.es.ment of particulate metal concentrations.in the ELP lagoon s.gnify low to moderate contamination.

关键词： s.s.ended particulate material Heavy metals Ris. as.es.ment Mas. trans.er Ens.nada de La Paz