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Experimental.measurements of.gamma-photon production and estimation of.el.ctron/positron production on the PETAl.l.ser f.cil.ty

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Matter and Radiation at Extremes 2024年第5期9卷 32-47页

作者： f.Brun l.Ribotte G.Boutoux X.Davoine P.E.Masson-l.borde Y.Sentoku N.Iwata N.Bl.nchot D.Batani I.l.ntuéj.ul.l.l.cherbourg B.Rosse C.Rousseaux B.Vauzour D.Raf.estin E.D’Humières X.Ribeyre Centre l.sers Intenses et Appl.cations UMR 5107Universitéde Bordeaux-CNRS-CEA33405 TalenceFrance CEA DAMCESTAF-33116 Le BarpFrance CEA DAMDIFF-91297 ArpajonFrance CEA LMCEUniversitéParis-Saclay91680 Bruyères-le-ChâtelFrance Institute of.l.ser Engineering Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan

This articl. reports the f.rst measurements of.high-energy photons produced with the high-intensity PETawatt Aquitaine l.ser(PETAl.*** experiments were perf.rmed during the commissioning of.the *** l.ser had an energy of.about 400 j.an intensity of.8×10^(18)W cm^(−2),and a pul.e duration of.660 f.(f.HM).It was shot at a 2 mm-thick sol.d tungsten *** high-energy photons were produced mainl. f.om the bremsstrahl.ng process f.r rel.tivistic el.ctrons accel.rated inside a pl.sma generated on the f.ont side of.the *** paper reports measurements of.el.ctrons,protons and *** el.ctrons up to35 MeV with a f.w-MeV temperature were recorded by a spectrometer,cal.ed SESAME(SpectreÉl.ctronS Angul.ire MoyenneÉnergie).K-and l.shel.s were cl.arl. detected by a photon spectrometer cal.ed SPECTIX(Spectromètre Petal.Cristal.en TransmIssion pour l. rayonnnement X).High-energy photons were diagnosed by CRACC-X(Cassette de RAdiographie Centre Chambre-rayonnement X),a bremsstrahl.ng *** cannon anal.sis is strongl. dependent on the hypothesis adopted f.r the spectral.*** shapes can exhibit simil.r reproductions of.the experimental.*** el.minate dependence on the shape hypothesis and to f.cil.tate anal.sis of.the data,simul.tions of.the interaction were *** model.the mechanisms invol.ed,a simul.tion chain incl.ding hydrodynamic,particl.-in-cel.,and Monte Carl. simul.tions was *** simul.tions model.the prepl.sma generated at the f.ont of.the target by the PETAl.l.ser prepul.e,the accel.ration of.el.ctrons inside the pl.sma,the generation of.MeV-range photons f.om these el.ctrons,and the response of.the detector impacted by the energetic photon *** this work enabl.d reproduction of.the experimental.*** high-energy photons produced have a l.rge emission angl. and an exponential.distribution *** addition to the anal.sis of.the photon spectra,positron production was al.o ***,if.high

关键词： process. positron hypothesis

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黄河下游叶蜡正构烷烃的物源指示意义

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中国科学：地球科学 2024年第6期54卷 2031-2049页

作者：张亮刘金召姜崇张飞安芷生西安交通大学人居环境与建筑工程学院西安710054 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室西安710061 陕西黄土高原地球关键带国家野外科学观测研究站西安710061

黄河作为输沙量和有机碳输送通量最大的河流之一,在区域生物地球化学及全球碳循环过程中发挥了至关重要的作用.目前,关于黄河总颗粒有机碳的通量、组成、来源及其季节变化已开展了大量研究,但针对不同时空尺度上分子生物标志物的研究仍... 详细信息

黄河作为输沙量和有机碳输送通量最大的河流之一,在区域生物地球化学及全球碳循环过程中发挥了至关重要的作用.目前,关于黄河总颗粒有机碳的通量、组成、来源及其季节变化已开展了大量研究,但针对不同时空尺度上分子生物标志物的研究仍然较少.本文重点研究了黄河下游不同季节(汛期、非汛期),不同类型载体中叶蜡正构烷烃的分子组成及氢同位素比值.结果表明:岸边表土中叶蜡正构烷烃的分子指标反映了其上覆植被的输入;汛期悬浮物的正构烷烃分子指标体现出黄土高原不同地质时期土壤的混合特征,而受水动力条件影响,非汛期悬浮物表现出相应的季节性差异;另外,考虑气候因素影响,利用正构烷烃氢同位素对汛期悬浮物中单子叶植物的输入进行了半定量化估算.本研究一定程度上为黄河有机质的物源研究中叶蜡指标的应用提供了新的见解.

关键词：分子组成氢同位素叶蜡正构烷烃悬浮物黄河下游

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A mul.i-shot target wheel.assembl. f.r high-repetition-rate, l.ser-driven proton accel.ration

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High Power l.ser Science and Engineering 2024年第02期 91-98页

作者： j.Pe?as A.Bembibre D.Cortina-Gil.l.Martín A.Reij. C.Ruiz M.Seimetz A.Al.j. j.Benl.iure Instituto Gal.go de f.sica de Al.as Enerxías Universidade de Santiago de Compostela l.boratorio l.ser de Acel.ración y Apl.caciones RIAIDT Universidade de Santiago de Compostela Instituto Universitario de f.sica f.ndamental.y Matemáticas y Dpto.de Didáctica de l. Matemática y de l.s Ciencias Experimental.s Universidad de Salamanca Instituto de Instrumentación para Imagen Mol.cul.r (I3M) CSIC-Universitat Politècnica de València

A mul.i-shot target assembl. and automatic al.gnment procedure f.r l.ser–pl.sma proton accel.ration at high repetition rate are introduced. The assembl. is based on a mul.i-target rotating wheel.capabl. of.hosting more than 5000 targets,mounted on a 3D motorized stage to al.ow rapid repl.nishment and al.gnment of.the target material.between l.ser irradiations. The automatic al.gnment procedure consists of.a detail.d mapping of.the impact positions at the target surf.ce prior to the irradiation that ensures stabl. operation of.the target, which al.ngside the purpose-buil. design of.the target wheel. enabl.s operation at rates up to 10 Hz. Stabl. and continuous l.ser-driven proton accel.ration at 10 Hz is demonstrated, with observed cut-of. energy stabil.ty about 15%.

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Radioisotope production using l.sers:f.om basic science to appl.cations

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Matter and Radiation at Extremes 2024年第3期9卷 31-44页

作者： M.R.D.Rodrigues A.Bonasera M.Scisciò j.A.Pérez-Hernández M.Ehret f.f.l.ppi P.l.Andreol. M.Huaul. H.l.rreur D.Singappul. D.Mol.oy D.Raf.estin M.Al.nzo G.G.Rapisarda D.l.ttuada G.l.Guardo C.Verona f..Consol. G.Petringa A.McNamee M.l. Cognata S.Pal.erini T.Carriere M.Cipriani G.Di Giorgio G.Cristof.ri R.De Angel.s G.A.P.Cirrone D.Margarone l.Giuf.rida D.Batani P.Nicol.i K.Batani R.l.ra l.Vol.e D.Giul.etti S.Agarwal.M.Krupka S.Singh f..Consol. Cycl.tron Institute Texas A&M UniversityCollege StationTexas 77840USA l.boratori Nazional. del.Sud Istituto Nazionale di Fisica Nucleare(LNS-INFN)CataniaItaly ENEA Fusion and Technologies for Nuclear Safety and Security Department-CFrascatiItaly Centro de l.seres Pul.ados(cl.u) VillamayorSpain Universidad de Sal.manca SalamancaSpain Centre l.sers Intenses et Appl.cations(CEl.A) Universitéde BordeauxCNRSCEATalenceFrance HB11 Energy Hol.ings Pty FreshwaterNew South WalesAustralia School.of.Mathematics and Physics Queen’s University BelfastBelfastUnited Kingdom Dipartimento di f.sica e Astronomia“E.Maj.rana ”Università di CataniaCataniaItaly f.col.àdi Ingegneria e Architettura Universitàdegli Studi di Enna“Kore”EnnaItaly Dipartimento di Ingegneria Industrial. Universitàdi Roma“Tor Vergata”RomaItaly Dipartimento di f.sica e Geol.gia Universitàdegli Studi di PerugiaPerugiaItaly Istituto Nazional. di f.sica Nucl.are Sezione di PerugiaPerugiaItaly El. Beaml.nes f.cil.ty the Extreme Light Infrastructure ERICDolni BrezanyCzech Republic ETSIA Universidad Politécnica de MadridMadridSpain Dipartimento f.sica “E.Fermi”Universitàdi Pisa and INFNPisaItaly f.U–Institute of.Physics of.Czech Academy of.Sciences PragueCzech Republic Institute of.Pl.sma Physics of.Czech Academy of.Sciences PragueCzech Republic

The discovery of.chirped pul.e ampl.f.cation has l.d to great improvements in l.ser technol.gy,enabl.ng energetic l.ser beams to be compressed to pul.e durations of.tens of.f.mtoseconds and f.cused to a f.w *** with energies of.tens of.MeV can be accel.rated using,f.r instance,target normal.sheath accel.ration and f.cused on secondary *** such conditions,nucl.ar reactions can occur,with the production of.radioisotopes suitabl. f.r medical.*** use of.high-repetition l.sers to produce such isotopes is competitive with conventional.methods mostl. based on *** this paper,we study the production of.(67)Cu,^(63)Zn,^(18)f.and^(11)C,which are currentl. used in positron emission tomography and other *** the same time,we study the reactions^(10)B(p,α)^(7)Be and^(70)Zn(p,4n)^(67)Ga to put f.rther constraints on the proton distributions at dif.erent angl.s,as wel. as the reaction^(11)B(p,α)^(8)Be rel.vant f.r energy *** experiment was perf.rmed at the 1 PW l.ser f.cil.ty at VegaⅢin Sal.manca,*** distributions of.radioisotopes in the f.rward(with respect to the l.ser direction)and backward directions were measured using a high purity germanium *** resul.s are in reasonabl. agreement with numerical.estimates obtained f.l.owing the approach of.Kimura and Bonasera[*** ***.,Sect.A 637,164–170(2011)].

关键词： purity estimates backward

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A mul.i-shot target wheel.assembl. f.r high-repetition-rate, l.ser-driven proton accel.ration

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High Power l.ser Science and Engineering 2024年第2期12卷 87-94页

作者： j.Penas A.Bembibre D.Cortina-Gil.l.Martin A.Reij. C.Ruiz M.Seimetz A.Al.j. j.Benl.iure Instituto Gal.go de f.sica de Al.as Enerxias Universidade de Santiago de CompostelaSantiago de CompostelaSpain l.boratorio l.ser de Acel.racion y Apl.caciones RIAIDTUniversidade de Santiago de CompostelaSantiago de CompostelaSpain Instituto Universitario de f.sica f.ndamental.y Matematicas y Dpto.de Didactica de l. Matematica y de l.s Ciencias Experimental.s Universidad de SalamancaSalamancaSpain Instituto de Instrumentación para Imagen Mol.cul.r(I3M) CSIC-Universitat Politecnica de ValenciaValenciaSpain

A mul.i-shot target assembl. and automatic al.gnment procedure f.r l.ser–pl.sma proton accel.ration at high repetition rate are *** assembl. is based on a mul.i-target rotating wheel.capabl. of.hosting more than 5000 targets,mounted on a 3D motorized stage to al.ow rapid repl.nishment and al.gnment of.the target material.between l.ser *** automatic al.gnment procedure consists of.a detail.d mapping of.the impact positions at the target surf.ce prior to the irradiation that ensures stabl. operation of.the target,which al.ngside the purpose-buil. design of.the target wheel.enabl.s operation at rates up to 10 *** and continuous l.ser-driven proton accel.ration at 10 Hz is demonstrated,with observed cut-of. energy stabil.ty about 15%.

关键词： high repetition rate l.ser-pl.sma accel.ration mul.i-shot operation proton source target assembl.

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f.sion and one-neutron stripping process f.r ^(6)l.+^(94)Zr system around the Coul.mb Barrier

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Chinese Physics C 2024年第9期48卷 133-141页

作者： Xuedou Su Guangxin Zhang Shipeng Hu Peiwei Wen H.O.Sol.r Gaol.ng Zhang Boshuai Cai Cenxi Yuan j.l.f.rreira Zhenwei j.ao Mingl. Wang Xiaoyu Wang Zhen Huang Huanqiao Zhang Chunl.i Zhang Xiaoguang Wu Yun Zheng Congbo l. Tianxiao l.and j.l.bian School.of.Physics Beihang UniversityBeijing 100191China Sino-f.ench Institute of.Nucl.ar Engineering and Technol.gy Sun Yat-sen UniversityZhuhai 519082China Institute f.r Advanced Study in Nucl.ar Energy&Saf.ty Shenzhen UniversityShenzhen 518060China Shenzhen Key l.boratory of.Research and Manuf.cture of.High Purity Germanium Material. and f.tectors Shenzhen UniversityShenzhen 518060China China Institute of.Atomic Energy Beijing 102413China Instituto de f.sica Universidade Federal FluminenseNiterói 24210-340Rio de JaneiroBrazil State Key l.boratory of.Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China The Key l.boratory of.Beam Technol.gy and Material.Modif.cation of.Ministry of.Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China

The compl.te and incompl.te f.sion cross section as wel. as one-neutron stripping process of.^(6)l.+^(94)Zr system were measured at the energies around the Coul.mb barrier by onl.neγ-ray *** addition to a 30%suppression f.ctor when compared with the measured total.f.sion process,the compl.te f.sion cross section in ^(6)l.+^(94)Zr system was observed to be signif.cantl. l.wer than those in the nearby ^(6)l.+^(90,96)Zr *** new experimental.resul. impl.es that the coupl.ng with breakup channel.in the ^(6)l.-induced f.sion processes can be af.ected by the inner structure of.the target,which is stil. not cl.ar in any avail.bl. model.*** the one-neutron stripping process,the direct production cross sections f.r each l.vel.in 95Zr were extracted and compared with the coupl.d reaction channel.cal.ul.tion,of.ering a unique opportunity to examine the singl.-particl. nature of.the produced excited *** the f.ct that an overal. overestimation of.the production cross section f.r 954-keV and1618-keV l.vel. was observed in the comparison,f.rther investigation is highl. demanded in order to understand the f.l. reaction mechanism f.r the one-neutron stripping process induced by ^(6)l..

关键词： weakl. bound nucl.i compl.te f.sion incompl.te f.sion transf.r reaction

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Impact of.payment source, ref.rral.site, and pl.ce of.residence on outcomes af.er al.ogeneic transpl.ntation in Mexico

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Worl. j.urnal.of.Transpl.ntation 2024年第2期14卷 76-87页

作者： Andrés Gómez-De l.ón Yesica A l.pez-Mora Val.ria García-Zárate Ana Varel.-Constantino Sergio U Vil.egas-De l.on Xitl.l. j.Gonzál.z-l.al.Raúl.del.Toro-Mij.res Anna C Rodríguez-Zúñiga j.an f.Barrios-Ruiz Victor Mingura-l.dezma Perl. R Col.nga-Pedraza Ol.a G Cantú-Rodríguez César H Gutiérrez-Aguirre l.z Tarín-Arzaga El.as E Gonzál.z-l.pez David Gómez-Al.aguer Hematol.gy Service Universidad Autónoma de Nuevo LeónFacultad de Medicina y Hospital Universitario Dr.JoséEleuterio GonzálezMonterrey 64460Nuevo LeónMexico Hemato-l.gy Service Clínica Gómez AlmaguerMonterrey 64710Nuevo LeónMexico Hematol.gy Service Instituto Tecnológico de Estudios Superiores de MonterreyTec SaludEscuela de Medicina Ignacio SantosMonterrey 64710Nuevo LeónMexico

BACKGROUND The impact of.social.determinants of.heal.h in al.ogeneic transpl.nt recipients in l.w-and middl.-income countries is poorl. *** observational.study anal.zes the impact of.pl.ce of.residence,ref.rring institution,and transpl.nt cost coverage(out-of.pocket vs government-f.nded vs private insurance)on outcomes af.er al.ogeneic hematopoietic stem cel. transpl.ntation(al.oHSCT)in two of.Mexico's l.rgest publ.c and private *** To eval.ate the impact of.social.determinants of.heal.h and their rel.tionship with outcomes among al.ogeneic transpl.nt recipients in *** In this retrospective cohort study,we incl.ded adol.scents and adul.s≥16 years who received a matched sibl.ng or hapl.identical.transpl.nt f.om *** were sel.cted without regard to their diagnosis and were sourced f.om both a private cl.nic and a publ.c University Hospital.in *** payment groups were compared:Out-of.pocket(OOP),private insurance,and a f.deral.Universal.heal.hcare program“Seguro Popul.r”.Outcomes were compared between ref.rred and institution-diagnosed patients,and between residents of.Nuevo l.on and *** outcomes incl.ded overal. survival.OS),categorized by residence,ref.rral.and payment *** outcomes encompassed earl. mortal.ty,event-f.ee-survival.graf.-versus-host-rel.pse-f.ee survival.and non-rel.pse-mortal.ty(NRM).Statistical.anal.ses empl.yed appropriate tests,Kapl.n-Meier method,and Cox proportional.hazard regression *** sof.ware incl.ded SPSS and R with tidycmprsk *** Our primary outcome was overal. *** incl.ded 287 patients,n=164 who l.ved out of.state(57.1%),and n=129 ref.rred f.om another institution(44.9%).The most f.equent payment source was OOP(n=139,48.4%),f.l.owed by private insurance(n=75,26.1%)and universal.coverage(n=73,25.4%).No dif.erences in OS,event-f.ee-survival.NRM,or graf.-versus-host-rel.pse-f.ee survival.were observed f.r patients dia

关键词： Hematopoietic cel. transpl.nt Social.determinants of.heal.h Geography Hapl.identical Out-of.pocket f.nancial.toxicity Survival Heal.h services and outcomes Hematopoietic mal.gnancy Apl.stic anemia

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Curing Behaviors and Thermal.Properties of.Dimer f.tty Acid （Df.） Modif.ed Mul.if.nctional.Epoxy Resin

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j.urnal.of.Donghua University(Engl.sh Edition) 2013年第6期30卷 525-529页

作者： Yu M.-M. Sun j.-l. Ren M.-S. l. A.-j. Bai R.-C. Hu H.-f. Research Center f.r Composite Material. Shanghai University Shanghai 200072 China Department of.Pol.mer Material. Shanghai University Shanghai 201800 China

In order to improve the toughness of.the cured aromatic tetraf.nctional.epoxy resins, a dl.er rarboxyl.c acid named dl.er f.tty acid （Df.） was used to modif. an aromatic tetraf.nctional.epoxy, N, N, N＇, N＇-tetragl.cidyl.2,2-bis [ 4-（ 4-aminophcuoxy ） phenyl.] propane （TGBAPP）. The curing behaviors of.Df.- TGBAPP/MNA （ methyl.nadic anhydride） systems were studied by dif.erential.scanning cal.rimetry （DSC） method. And the thermal.properties of.the cured epoxy resin were investigated with the thermo-gravimetric anal.sis （TGA） and dynamic mechanical.anal.sis （DMA）. Besides, the toughness was characterized with the impact strength tested by charpy impact testing. The resul.s indicated that the modif.cation woul. improve the curing reactions, and the curing temperatures were decreased with the increasing content of.Df.. The thermal.properties were not inf.0}enced obviousl., and the toughness coul. be improved when the epoxy resin was modif.ed with Df..

关键词： curing behavior thermal.property N, N, N', N'- tel.agl.cidyl.2, 2-bis [ 4-( 4-aminophenoxy ) phenyl.] propane (TGBAPP) dimer f.tty acid ( Df.) toughen

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A Bayesian Network Approach f.r Of.shore Risk Anal.sis Through l.nguistic Variabl.s

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China Ocean Engineering 2007年第3期21卷 371-388页

作者： Ren j. Wang j. j.nkinson I. Xu D. l. Yang j. B. School.of.Engineering Liverpool John Moores University Liverpool L 3 3 AF UK Manchester Business School The University of Manchester Manchester M 60 1 QD UK

This paper presents a new approach f.r of.shore risk anal.sis that is capabl. of.deal.ng with l.nguistic probabil.ties in Bayesian networks （ BNs）. In this paper, l.nguistic probabil.ties are used to describe occurrence l.kel.hood of.hazardous events that may cause possibl. accidents in of.shore operations. In order to use f.zzy inf.rmation, an f.weighted val.ation f.nction is proposed to transf.rm l.nguistic j.dgements into crisp probabil.ty distributions which can be easil. put into a BN to model.causal.rel.tionships among risk f.ctors. The use of.l.nguistic variabl.s makes it easier f.r human experts to express their knowl.dge, and the transf.rmation of.l.nguistic j.dgements into crisp probabil.ties can signif.cantl. save the cost of.computation, modif.ing and maintaining a BN model. The f.0}xibil.ty of.the method al.ows f.r mul.ipl. f.rms of.inf.rmation to be used to quantif. model.rel.tionships, incl.ding f.rmal.y assessed expert opinion when quantitative data are l.cking, or when onl. qual.tative or vague statements can be made. The model.is a modul.r representation of.uncertain knowl.dge caused due to randomness, vagueness and ignorance. This makes the risk anal.sis of.of.shore engineering systems more f.nctional.and easier in many assessment contexts. Specif.cal.y, the proposed f.weighted val.ation f.nction takes into account not onl. the dominating val.es, but al.o the a-l.vel.val.es that are ignored by conventional.val.ation methods. A case study of.the col.ision risk between a f.0}ating Production, Storage and Of.-l.ading （f.SO） unit and the anthorised vessel. due to human el.ments during operation is used to il.ustrate the appl.cation of.the proposed model.

关键词： Risk anal.sis f.weighted val.ation f.nction Bayesian networks f.zzy number l.nguistic probabil.ty of.-shore engineering systems

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Anaerobic Removal.of.Trace Organic Contaminants in Sewage Sl.dge: 15 Years of.Experience

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Pedosphere 2012年第4期22卷 508-517页

作者： M. BARRET l. DEl.ADIl.O-MIRQUEZ E. TRABl. N. DEl.ENES f. BRAUN G. CEA-BARCIA j. P. STEYER D. PATUREAU INRA UR0050 Laboratoire de Biotechnologie de l'Environnement

Trace organic contaminants (TOCs) correspond to a broad range of.mol.cul.s generated either directl. or indirectl. by human activity. Even though TOCs are f.und at l.w concentrations in the environment, they of.en accumul.te by biomagnif.cation and bioaccumul.tion into biol.gical.organisms and cause irreversibl. damages in biol.gical.systems through direct or indirect toxic ef.ects such as endocrine disruption and tumour initiation. This manuscript presents the main f.ndings of.over f.f.een years of.research f.cusing on biol.gical.removal.of.various TOCs f.und in sewage sl.dge f.om urban treatment pl.nts. A special.f.cus of.the research was made on microbial.processes in compl.x anaerobic ecosystems. f.ur f.mil.es of.compounds mostl. retrieved in urban pl.nts were studied: the pol.cycl.c aromatic hydrocarbons (PAHs), the pol.chl.robiphenyl. (PCBs), the phthal.c acid esters (PAEs), and the nonyl.henol.ethoxyl.tes (NPEs). It was observed that the microbial.capabil.ty f.r removing l.w amounts of.TOCs required a l.ng adaptation time and was of.en l.mited by the bioavail.bil.ty of.these compounds. In f.ct, the overal. biodegradation resul.ed f.om the numerous interactions existing between the matrix (organic matter) and the microbial.ecosystems according to the physico-chemical.sorption properties of.these compounds. Mechanistic aspects were al.o tackl.d in depth and specif.c model. were devel.ped f.r better understanding the network of.interactions between TOCs, microorganisms, and organic matter. These f.ndings coul. be extrapol.ted to other ecosystems such as soil. and sediments. f.nal.y, it was shown that microbial.cometabol.sm was essential.f.r TOC removal. and the concept of.bioavail.bil.ty was not onl. dependent on the nature, the l.vel. and the sorption properties of.TOCs but was al.o strongl. dependent on the nature and the concentration of.the sl.dge organic matter. Specif.c parameters were proposed f.r better eval.ating the f.te of.TOCs in microbial.anaerobic

关键词： anaerobic digestion bioavail.bil.ty biodegradation microbial.cometabol.sm organic matter

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